-------------------------------------------------------------------------------- I1 cache: 65536 B, 64 B, 4-way associative D1 cache: 32768 B, 64 B, 8-way associative LL cache: 67108864 B, 64 B, 64-way associative Command: /usr/home/liquid/.rustup/toolchains/w-profiling/bin/rustc --crate-name unicode_segmentation --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 -C metadata=b29c1abbd74b0d60 -C extra-filename=-b29c1abbd74b0d60 --out-dir /usr/home/liquid/tmp/.tmpTxnYOE/target/debug/deps -L dependency=/usr/home/liquid/tmp/.tmpTxnYOE/target/debug/deps -Adeprecated -Aunknown-lints -Zincremental-verify-ich Data file: results/cgout-w-profiling-unicode-segmentation-1.8.0-Check-Full Events recorded: Ir Events shown: Ir Event sort order: Ir Thresholds: 0.1 Include dirs: User annotated: Auto-annotation: on -------------------------------------------------------------------------------- Ir -------------------------------------------------------------------------------- 1,719,320,409 (100.0%) PROGRAM TOTALS -------------------------------------------------------------------------------- Ir file:function -------------------------------------------------------------------------------- 48,647,342 ( 2.83%) ./malloc/malloc.c:_int_free 47,955,875 ( 2.79%) ./malloc/malloc.c:_int_malloc 33,324,569 ( 1.94%) ./string/../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:__memcpy_avx_unaligned_erms 30,689,918 ( 1.79%) ./malloc/malloc.c:malloc 14,313,181 ( 0.83%) ./malloc/malloc.c:free 10,384,234 ( 0.60%) ./malloc/malloc.c:malloc_consolidate 10,305,124 ( 0.60%) ./elf/dl-lookup.c:_dl_lookup_symbol_x 8,040,162 ( 0.47%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/mod.rs:>>::from_key_hashed_nocheck:: 7,538,020 ( 0.44%) 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/usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/mod.rs:>>::get:: 4,852,498 ( 0.28%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_span/src/caching_source_map_view.rs:::span_data_to_lines_and_cols 4,835,679 ( 0.28%) ./elf/dl-lookup.c:do_lookup_x 4,580,527 ( 0.27%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/layout.rs:<&rustc_middle::ty::TyS as rustc_target::abi::TyAbiInterface<_>>::ty_and_layout_field::field_ty_or_layout::> 4,523,593 ( 0.26%) ./malloc/malloc.c:realloc 4,359,528 ( 0.25%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_data_structures/src/sip128.rs:::short_write_process_buffer:: 4,217,507 ( 0.25%) /usr/home/liquid/rust/worktree-benchmarking/library/std/src/sys/unix/alloc.rs:__rdl_alloc 4,141,271 ( 0.24%) ./elf/../sysdeps/x86_64/dl-machine.h:_dl_relocate_object 4,048,992 ( 0.24%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/hir/map/mod.rs:::attrs 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/usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_ast_pretty/src/pp/ring.rs:>::pop_first 3,064,688 ( 0.18%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/map.rs:>, (), core::hash::BuildHasherDefault>>::from_hash::>>::{closure#0}> 3,054,897 ( 0.18%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/layout.rs:<&rustc_middle::ty::TyS as rustc_target::abi::TyAbiInterface>>::ty_and_layout_field 3,053,635 ( 0.18%) ./malloc/malloc.c:_int_realloc 3,033,204 ( 0.18%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_parse/src/parser/mod.rs:::next 3,029,378 ( 0.18%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/freshen.rs:::fold_ty 3,029,044 ( 0.18%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_parse/src/parser/mod.rs:::bump 3,001,300 ( 0.17%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/context.rs:::maybe_lint_level_root_bounded 2,968,161 ( 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/usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/mir/interpret/allocation.rs:::find_bit -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/type_variable.rs -------------------------------------------------------------------------------- Ir -- line 44 ---------------------------------------- . /// Convert from a specific kind of undo to the more general UndoLog . impl<'tcx> From for UndoLog<'tcx> { . fn from(l: Instantiate) -> Self { . UndoLog::Values(sv::UndoLog::Other(l)) . } . } . . impl<'tcx> Rollback> for TypeVariableStorage<'tcx> { 98,610 ( 0.01%) fn reverse(&mut self, undo: UndoLog<'tcx>) { 414,482 ( 0.02%) match undo { 78,568 ( 0.00%) UndoLog::EqRelation(undo) => self.eq_relations.reverse(undo), 40,340 ( 0.00%) UndoLog::SubRelation(undo) => self.sub_relations.reverse(undo), 78,312 ( 0.00%) UndoLog::Values(undo) => self.values.reverse(undo), . } 197,220 ( 0.01%) } . } . . pub struct TypeVariableStorage<'tcx> { . values: sv::SnapshotVecStorage, . . /// Two variables are unified in `eq_relations` when we have a . /// constraint `?X == ?Y`. This table also stores, for each key, . /// the known value. -- line 66 ---------------------------------------- -- line 136 ---------------------------------------- . DynReturnFn, . LatticeVariable, . } . . pub(crate) struct TypeVariableData { . origin: TypeVariableOrigin, . } . 284,928 ( 0.02%) #[derive(Copy, Clone, Debug)] . pub enum TypeVariableValue<'tcx> { . Known { value: Ty<'tcx> }, . Unknown { universe: ty::UniverseIndex }, . } . . impl<'tcx> TypeVariableValue<'tcx> { . /// If this value is known, returns the type it is known to be. . /// Otherwise, `None`. . pub fn known(&self) -> Option> { 141,002 ( 0.01%) match *self { . TypeVariableValue::Unknown { .. } => None, . TypeVariableValue::Known { value } => Some(value), . } . } . . pub fn is_unknown(&self) -> bool { . match *self { . TypeVariableValue::Unknown { .. } => true, -- line 162 ---------------------------------------- -- line 166 ---------------------------------------- . } . . pub(crate) struct Instantiate; . . pub(crate) struct Delegate; . . impl<'tcx> TypeVariableStorage<'tcx> { . pub fn new() -> TypeVariableStorage<'tcx> { 10,827 ( 0.00%) TypeVariableStorage { . values: sv::SnapshotVecStorage::new(), . eq_relations: ut::UnificationTableStorage::new(), . sub_relations: ut::UnificationTableStorage::new(), . } . } . . #[inline] . pub(crate) fn with_log<'a>( -- line 182 ---------------------------------------- -- line 188 ---------------------------------------- . } . . impl<'tcx> TypeVariableTable<'_, 'tcx> { . /// Returns the origin that was given when `vid` was created. . /// . /// Note that this function does not return care whether . /// `vid` has been unified with something else or not. . pub fn var_origin(&self, vid: ty::TyVid) -> &TypeVariableOrigin { 202 ( 0.00%) &self.storage.values.get(vid.as_usize()).origin . } . . /// Records that `a == b`, depending on `dir`. . /// . /// Precondition: neither `a` nor `b` are known. . pub fn equate(&mut self, a: ty::TyVid, b: ty::TyVid) { . debug_assert!(self.probe(a).is_unknown()); . debug_assert!(self.probe(b).is_unknown()); 1,827 ( 0.00%) self.eq_relations().union(a, b); 1,566 ( 0.00%) self.sub_relations().union(a, b); . } . . /// Records that `a <: b`, depending on `dir`. . /// . /// Precondition: neither `a` nor `b` are known. . pub fn sub(&mut self, a: ty::TyVid, b: ty::TyVid) { . debug_assert!(self.probe(a).is_unknown()); . debug_assert!(self.probe(b).is_unknown()); 381 ( 0.00%) self.sub_relations().union(a, b); . } . . /// Instantiates `vid` with the type `ty`. . /// . /// Precondition: `vid` must not have been previously instantiated. 108,835 ( 0.01%) pub fn instantiate(&mut self, vid: ty::TyVid, ty: Ty<'tcx>) { . let vid = self.root_var(vid); . debug_assert!(self.probe(vid).is_unknown()); . debug_assert!( . self.eq_relations().probe_value(vid).is_unknown(), . "instantiating type variable `{:?}` twice: new-value = {:?}, old-value={:?}", . vid, . ty, . self.eq_relations().probe_value(vid) . ); 152,369 ( 0.01%) self.eq_relations().union_value(vid, TypeVariableValue::Known { value: ty }); . . // Hack: we only need this so that `types_escaping_snapshot` . // can see what has been unified; see the Delegate impl for . // more details. . self.undo_log.push(Instantiate); 108,835 ( 0.01%) } . . /// Creates a new type variable. . /// . /// - `diverging`: indicates if this is a "diverging" type . /// variable, e.g., one created as the type of a `return` . /// expression. The code in this module doesn't care if a . /// variable is diverging, but the main Rust type-checker will . /// sometimes "unify" such variables with the `!` or `()` types. . /// - `origin`: indicates *why* the type variable was created. . /// The code in this module doesn't care, but it can be useful . /// for improving error messages. 136,836 ( 0.01%) pub fn new_var( . &mut self, . universe: ty::UniverseIndex, . origin: TypeVariableOrigin, . ) -> ty::TyVid { 205,254 ( 0.01%) let eq_key = self.eq_relations().new_key(TypeVariableValue::Unknown { universe }); . 114,030 ( 0.01%) let sub_key = self.sub_relations().new_key(()); 22,806 ( 0.00%) assert_eq!(eq_key.vid, sub_key); . 205,254 ( 0.01%) let index = self.values().push(TypeVariableData { origin }); 91,224 ( 0.01%) assert_eq!(eq_key.vid.as_u32(), index as u32); . . debug!("new_var(index={:?}, universe={:?}, origin={:?}", eq_key.vid, universe, origin,); . . eq_key.vid 159,642 ( 0.01%) } . . /// Returns the number of type variables created thus far. . pub fn num_vars(&self) -> usize { 444 ( 0.00%) self.storage.values.len() . } . . /// Returns the "root" variable of `vid` in the `eq_relations` . /// equivalence table. All type variables that have been equated . /// will yield the same root variable (per the union-find . /// algorithm), so `root_var(a) == root_var(b)` implies that `a == . /// b` (transitively). . pub fn root_var(&mut self, vid: ty::TyVid) -> ty::TyVid { 70,665 ( 0.00%) self.eq_relations().find(vid).vid . } . . /// Returns the "root" variable of `vid` in the `sub_relations` . /// equivalence table. All type variables that have been are . /// related via equality or subtyping will yield the same root . /// variable (per the union-find algorithm), so `sub_root_var(a) . /// == sub_root_var(b)` implies that: . /// . /// exists X. (a <: X || X <: a) && (b <: X || X <: b) 46 ( 0.00%) pub fn sub_root_var(&mut self, vid: ty::TyVid) -> ty::TyVid { 65,715 ( 0.00%) self.sub_relations().find(vid) 92 ( 0.00%) } . . /// Returns `true` if `a` and `b` have same "sub-root" (i.e., exists some . /// type X such that `forall i in {a, b}. (i <: X || X <: i)`. . pub fn sub_unified(&mut self, a: ty::TyVid, b: ty::TyVid) -> bool { . self.sub_root_var(a) == self.sub_root_var(b) . } . . /// Retrieves the type to which `vid` has been instantiated, if . /// any. 601,105 ( 0.03%) pub fn probe(&mut self, vid: ty::TyVid) -> TypeVariableValue<'tcx> { . self.inlined_probe(vid) 601,105 ( 0.03%) } . . /// An always-inlined variant of `probe`, for very hot call sites. . #[inline(always)] . pub fn inlined_probe(&mut self, vid: ty::TyVid) -> TypeVariableValue<'tcx> { 265,488 ( 0.02%) self.eq_relations().inlined_probe_value(vid) . } . . /// If `t` is a type-inference variable, and it has been . /// instantiated, then return the with which it was . /// instantiated. Otherwise, returns `t`. . pub fn replace_if_possible(&mut self, t: Ty<'tcx>) -> Ty<'tcx> { 156,564 ( 0.01%) match *t.kind() { 157,252 ( 0.01%) ty::Infer(ty::TyVar(v)) => match self.probe(v) { . TypeVariableValue::Unknown { .. } => t, . TypeVariableValue::Known { value } => value, . }, . _ => t, . } . } . . #[inline] -- line 323 ---------------------------------------- -- line 324 ---------------------------------------- . fn values( . &mut self, . ) -> sv::SnapshotVec, &mut InferCtxtUndoLogs<'tcx>> { . self.storage.values.with_log(self.undo_log) . } . . #[inline] . fn eq_relations(&mut self) -> super::UnificationTable<'_, 'tcx, TyVidEqKey<'tcx>> { 508,954 ( 0.03%) self.storage.eq_relations.with_log(self.undo_log) . } . . #[inline] . fn sub_relations(&mut self) -> super::UnificationTable<'_, 'tcx, ty::TyVid> { 45,231 ( 0.00%) self.storage.sub_relations.with_log(self.undo_log) . } . . /// Returns a range of the type variables created during the snapshot. 2,220 ( 0.00%) pub fn vars_since_snapshot( . &mut self, . value_count: usize, . ) -> (Range, Vec) { . let range = TyVid::from_usize(value_count)..TyVid::from_usize(self.num_vars()); 2,664 ( 0.00%) ( . range.start..range.end, . (range.start.as_usize()..range.end.as_usize()) . .map(|index| self.storage.values.get(index).origin) . .collect(), . ) 2,664 ( 0.00%) } . . /// Returns indices of all variables that are not yet . /// instantiated. . pub fn unsolved_variables(&mut self) -> Vec { . (0..self.storage.values.len()) . .filter_map(|i| { . let vid = ty::TyVid::from_usize(i); 16,340 ( 0.00%) match self.probe(vid) { . TypeVariableValue::Unknown { .. } => Some(vid), . TypeVariableValue::Known { .. } => None, . } . }) . .collect() . } . } . -- line 368 ---------------------------------------- -- line 391 ---------------------------------------- . /// These structs (a newtyped TyVid) are used as the unification key . /// for the `eq_relations`; they carry a `TypeVariableValue` along . /// with them. . #[derive(Copy, Clone, Debug, PartialEq, Eq)] . pub(crate) struct TyVidEqKey<'tcx> { . vid: ty::TyVid, . . // in the table, we map each ty-vid to one of these: 211,831 ( 0.01%) phantom: PhantomData>, . } . . impl<'tcx> From for TyVidEqKey<'tcx> { . #[inline] // make this function eligible for inlining - it is quite hot. . fn from(vid: ty::TyVid) -> Self { . TyVidEqKey { vid, phantom: PhantomData } . } . } -- line 407 ---------------------------------------- -- line 419 ---------------------------------------- . "TyVidEqKey" . } . } . . impl<'tcx> ut::UnifyValue for TypeVariableValue<'tcx> { . type Error = ut::NoError; . . fn unify_values(value1: &Self, value2: &Self) -> Result { 88,373 ( 0.01%) match (value1, value2) { . // We never equate two type variables, both of which . // have known types. Instead, we recursively equate . // those types. . (&TypeVariableValue::Known { .. }, &TypeVariableValue::Known { .. }) => { . bug!("equating two type variables, both of which have known types") . } . . // If one side is known, prefer that one. . (&TypeVariableValue::Known { .. }, &TypeVariableValue::Unknown { .. }) => Ok(*value1), . (&TypeVariableValue::Unknown { .. }, &TypeVariableValue::Known { .. }) => Ok(*value2), . . // If both sides are *unknown*, it hardly matters, does it? . ( 261 ( 0.00%) &TypeVariableValue::Unknown { universe: universe1 }, 261 ( 0.00%) &TypeVariableValue::Unknown { universe: universe2 }, . ) => { . // If we unify two unbound variables, ?T and ?U, then whatever . // value they wind up taking (which must be the same value) must . // be nameable by both universes. Therefore, the resulting . // universe is the minimum of the two universes, because that is . // the one which contains the fewest names in scope. . let universe = cmp::min(universe1, universe2); 1,044 ( 0.00%) Ok(TypeVariableValue::Unknown { universe }) . } . } . } . } 63,251 ( 0.00%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/sty.rs -------------------------------------------------------------------------------- Ir -- line 23 ---------------------------------------- . use std::cmp::Ordering; . use std::marker::PhantomData; . use std::ops::Range; . use ty::util::IntTypeExt; . . #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] . #[derive(HashStable, TypeFoldable, Lift)] . pub struct TypeAndMut<'tcx> { 37 ( 0.00%) pub ty: Ty<'tcx>, 185 ( 0.00%) pub mutbl: hir::Mutability, . } . . #[derive(Clone, PartialEq, PartialOrd, Eq, Ord, Hash, TyEncodable, TyDecodable, Copy)] . #[derive(HashStable)] . /// A "free" region `fr` can be interpreted as "some region . /// at least as big as the scope `fr.scope`". . pub struct FreeRegion { 12,232 ( 0.00%) pub scope: DefId, 19,996 ( 0.00%) pub bound_region: BoundRegionKind, . } . 99,705 ( 0.01%) #[derive(Clone, PartialEq, PartialOrd, Eq, Ord, Hash, TyEncodable, TyDecodable, Copy)] . #[derive(HashStable)] . pub enum BoundRegionKind { . /// An anonymous region parameter for a given fn (&T) 4,598 ( 0.00%) BrAnon(u32), . . /// Named region parameters for functions (a in &'a T) . /// . /// The `DefId` is needed to distinguish free regions in . /// the event of shadowing. 273 ( 0.00%) BrNamed(DefId, Symbol), . . /// Anonymous region for the implicit env pointer parameter . /// to a closure . BrEnv, . } . 956 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, Hash, TyEncodable, TyDecodable, Debug, PartialOrd, Ord)] . #[derive(HashStable)] . pub struct BoundRegion { 17,315 ( 0.00%) pub var: BoundVar, 14,523 ( 0.00%) pub kind: BoundRegionKind, . } . . impl BoundRegionKind { . pub fn is_named(&self) -> bool { . match *self { . BoundRegionKind::BrNamed(_, name) => name != kw::UnderscoreLifetime, . _ => false, . } . } . } . . /// Defines the kinds of types. . /// . /// N.B., if you change this, you'll probably want to change the corresponding . /// AST structure in `rustc_ast/src/ast.rs` as well. 3,771,143 ( 0.22%) #[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable, Debug)] . #[derive(HashStable)] . #[rustc_diagnostic_item = "TyKind"] . pub enum TyKind<'tcx> { . /// The primitive boolean type. Written as `bool`. . Bool, . . /// The primitive character type; holds a Unicode scalar value . /// (a non-surrogate code point). Written as `char`. -- line 89 ---------------------------------------- -- line 99 ---------------------------------------- . Float(ty::FloatTy), . . /// Algebraic data types (ADT). For example: structures, enumerations and unions. . /// . /// InternalSubsts here, possibly against intuition, *may* contain `Param`s. . /// That is, even after substitution it is possible that there are type . /// variables. This happens when the `Adt` corresponds to an ADT . /// definition and not a concrete use of it. 433,750 ( 0.03%) Adt(&'tcx AdtDef, SubstsRef<'tcx>), . . /// An unsized FFI type that is opaque to Rust. Written as `extern type T`. . Foreign(DefId), . . /// The pointee of a string slice. Written as `str`. . Str, . . /// An array with the given length. Written as `[T; n]`. 3,809 ( 0.00%) Array(Ty<'tcx>, &'tcx ty::Const<'tcx>), . . /// The pointee of an array slice. Written as `[T]`. . Slice(Ty<'tcx>), . . /// A raw pointer. Written as `*mut T` or `*const T` . RawPtr(TypeAndMut<'tcx>), . . /// A reference; a pointer with an associated lifetime. Written as . /// `&'a mut T` or `&'a T`. 280,955 ( 0.02%) Ref(Region<'tcx>, Ty<'tcx>, hir::Mutability), . . /// The anonymous type of a function declaration/definition. Each . /// function has a unique type, which is output (for a function . /// named `foo` returning an `i32`) as `fn() -> i32 {foo}`. . /// . /// For example the type of `bar` here: . /// . /// ```rust -- line 134 ---------------------------------------- -- line 143 ---------------------------------------- . /// . /// ```rust . /// fn foo() -> i32 { 1 } . /// let bar: fn() -> i32 = foo; . /// ``` . FnPtr(PolyFnSig<'tcx>), . . /// A trait object. Written as `dyn for<'b> Trait<'b, Assoc = u32> + Send + 'a`. 3,924 ( 0.00%) Dynamic(&'tcx List>>, ty::Region<'tcx>), . . /// The anonymous type of a closure. Used to represent the type of . /// `|a| a`. . Closure(DefId, SubstsRef<'tcx>), . . /// The anonymous type of a generator. Used to represent the type of . /// `|a| yield a`. . Generator(DefId, SubstsRef<'tcx>, hir::Movability), -- line 159 ---------------------------------------- -- line 180 ---------------------------------------- . /// The substitutions are for the generics of the function in question. . /// After typeck, the concrete type can be found in the `types` map. . Opaque(DefId, SubstsRef<'tcx>), . . /// A type parameter; for example, `T` in `fn f(x: T) {}`. . Param(ParamTy), . . /// Bound type variable, used only when preparing a trait query. 662 ( 0.00%) Bound(ty::DebruijnIndex, BoundTy), . . /// A placeholder type - universally quantified higher-ranked type. . Placeholder(ty::PlaceholderType), . . /// A type variable used during type checking. . Infer(InferTy), . . /// A placeholder for a type which could not be computed; this is -- line 196 ---------------------------------------- -- line 330 ---------------------------------------- . pub closure_kind_ty: T, . pub closure_sig_as_fn_ptr_ty: T, . pub tupled_upvars_ty: T, . } . . impl<'tcx> ClosureSubsts<'tcx> { . /// Construct `ClosureSubsts` from `ClosureSubstsParts`, containing `Substs` . /// for the closure parent, alongside additional closure-specific components. 22 ( 0.00%) pub fn new( . tcx: TyCtxt<'tcx>, . parts: ClosureSubstsParts<'tcx, Ty<'tcx>>, . ) -> ClosureSubsts<'tcx> { . ClosureSubsts { . substs: tcx.mk_substs( 44 ( 0.00%) parts.parent_substs.iter().copied().chain( 88 ( 0.00%) [parts.closure_kind_ty, parts.closure_sig_as_fn_ptr_ty, parts.tupled_upvars_ty] . .iter() . .map(|&ty| ty.into()), . ), . ), . } 44 ( 0.00%) } . . /// Divides the closure substs into their respective components. . /// The ordering assumed here must match that used by `ClosureSubsts::new` above. 373 ( 0.00%) fn split(self) -> ClosureSubstsParts<'tcx, GenericArg<'tcx>> { . match self.substs[..] { 3,394 ( 0.00%) [ 935 ( 0.00%) ref parent_substs @ .., 912 ( 0.00%) closure_kind_ty, 504 ( 0.00%) closure_sig_as_fn_ptr_ty, 654 ( 0.00%) tupled_upvars_ty, 1,492 ( 0.00%) ] => ClosureSubstsParts { . parent_substs, . closure_kind_ty, . closure_sig_as_fn_ptr_ty, . tupled_upvars_ty, . }, . _ => bug!("closure substs missing synthetics"), . } 1,119 ( 0.00%) } . . /// Returns `true` only if enough of the synthetic types are known to . /// allow using all of the methods on `ClosureSubsts` without panicking. . /// . /// Used primarily by `ty::print::pretty` to be able to handle closure . /// types that haven't had their synthetic types substituted in. . pub fn is_valid(self) -> bool { . self.substs.len() >= 3 -- line 378 ---------------------------------------- -- line 383 ---------------------------------------- . pub fn parent_substs(self) -> &'tcx [GenericArg<'tcx>] { . self.split().parent_substs . } . . /// Returns an iterator over the list of types of captured paths by the closure. . /// In case there was a type error in figuring out the types of the captured path, an . /// empty iterator is returned. . #[inline] 60 ( 0.00%) pub fn upvar_tys(self) -> impl Iterator> + 'tcx { 126 ( 0.00%) match self.tupled_upvars_ty().kind() { . TyKind::Error(_) => None, 84 ( 0.00%) TyKind::Tuple(..) => Some(self.tupled_upvars_ty().tuple_fields()), . TyKind::Infer(_) => bug!("upvar_tys called before capture types are inferred"), . ty => bug!("Unexpected representation of upvar types tuple {:?}", ty), . } . .into_iter() . .flatten() 40 ( 0.00%) } . . /// Returns the tuple type representing the upvars for this closure. . #[inline] . pub fn tupled_upvars_ty(self) -> Ty<'tcx> { 1,669 ( 0.00%) self.split().tupled_upvars_ty.expect_ty() . } . . /// Returns the closure kind for this closure; may return a type . /// variable during inference. To get the closure kind during . /// inference, use `infcx.closure_kind(substs)`. 204 ( 0.00%) pub fn kind_ty(self) -> Ty<'tcx> { . self.split().closure_kind_ty.expect_ty() 408 ( 0.00%) } . . /// Returns the `fn` pointer type representing the closure signature for this . /// closure. . // FIXME(eddyb) this should be unnecessary, as the shallowly resolved . // type is known at the time of the creation of `ClosureSubsts`, . // see `rustc_typeck::check::closure`. . pub fn sig_as_fn_ptr_ty(self) -> Ty<'tcx> { . self.split().closure_sig_as_fn_ptr_ty.expect_ty() . } . . /// Returns the closure kind for this closure; only usable outside . /// of an inference context, because in that context we know that . /// there are no type variables. . /// . /// If you have an inference context, use `infcx.closure_kind()`. 10 ( 0.00%) pub fn kind(self) -> ty::ClosureKind { 10 ( 0.00%) self.kind_ty().to_opt_closure_kind().unwrap() 20 ( 0.00%) } . . /// Extracts the signature from the closure. 223 ( 0.00%) pub fn sig(self) -> ty::PolyFnSig<'tcx> { . let ty = self.sig_as_fn_ptr_ty(); 446 ( 0.00%) match ty.kind() { 892 ( 0.00%) ty::FnPtr(sig) => *sig, . _ => bug!("closure_sig_as_fn_ptr_ty is not a fn-ptr: {:?}", ty.kind()), . } 669 ( 0.00%) } . } . . /// Similar to `ClosureSubsts`; see the above documentation for more. . #[derive(Copy, Clone, Debug, TypeFoldable)] . pub struct GeneratorSubsts<'tcx> { . pub substs: SubstsRef<'tcx>, . } . -- line 448 ---------------------------------------- -- line 676 ---------------------------------------- . } . . impl<'tcx> UpvarSubsts<'tcx> { . /// Returns an iterator over the list of types of captured paths by the closure/generator. . /// In case there was a type error in figuring out the types of the captured path, an . /// empty iterator is returned. . #[inline] . pub fn upvar_tys(self) -> impl Iterator> + 'tcx { 64 ( 0.00%) let tupled_tys = match self { 86 ( 0.00%) UpvarSubsts::Closure(substs) => substs.as_closure().tupled_upvars_ty(), . UpvarSubsts::Generator(substs) => substs.as_generator().tupled_upvars_ty(), . }; . 140 ( 0.00%) match tupled_tys.kind() { . TyKind::Error(_) => None, 118 ( 0.00%) TyKind::Tuple(..) => Some(self.tupled_upvars_ty().tuple_fields()), . TyKind::Infer(_) => bug!("upvar_tys called before capture types are inferred"), . ty => bug!("Unexpected representation of upvar types tuple {:?}", ty), . } . .into_iter() . .flatten() . } . . #[inline] . pub fn tupled_upvars_ty(self) -> Ty<'tcx> { 108 ( 0.00%) match self { 128 ( 0.00%) UpvarSubsts::Closure(substs) => substs.as_closure().tupled_upvars_ty(), . UpvarSubsts::Generator(substs) => substs.as_generator().tupled_upvars_ty(), . } . } . } . . /// An inline const is modeled like . /// . /// const InlineConst<'l0...'li, T0...Tj, R>: R; -- line 710 ---------------------------------------- -- line 760 ---------------------------------------- . } . . /// Returns the type of this inline const. . pub fn ty(self) -> Ty<'tcx> { . self.split().ty.expect_ty() . } . } . 3,087 ( 0.00%) #[derive(Debug, Copy, Clone, PartialEq, PartialOrd, Ord, Eq, Hash, TyEncodable, TyDecodable)] 3,213 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub enum ExistentialPredicate<'tcx> { . /// E.g., `Iterator`. . Trait(ExistentialTraitRef<'tcx>), . /// E.g., `Iterator::Item = T`. . Projection(ExistentialProjection<'tcx>), . /// E.g., `Send`. 6 ( 0.00%) AutoTrait(DefId), . } . . impl<'tcx> ExistentialPredicate<'tcx> { . /// Compares via an ordering that will not change if modules are reordered or other changes are . /// made to the tree. In particular, this ordering is preserved across incremental compilations. 30 ( 0.00%) pub fn stable_cmp(&self, tcx: TyCtxt<'tcx>, other: &Self) -> Ordering { . use self::ExistentialPredicate::*; 32 ( 0.00%) match (*self, *other) { . (Trait(_), Trait(_)) => Ordering::Equal, . (Projection(ref a), Projection(ref b)) => { . tcx.def_path_hash(a.item_def_id).cmp(&tcx.def_path_hash(b.item_def_id)) . } . (AutoTrait(ref a), AutoTrait(ref b)) => { . tcx.def_path_hash(*a).cmp(&tcx.def_path_hash(*b)) . } . (Trait(_), _) => Ordering::Less, . (Projection(_), Trait(_)) => Ordering::Greater, . (Projection(_), _) => Ordering::Less, . (AutoTrait(_), _) => Ordering::Greater, . } 36 ( 0.00%) } . } . . impl<'tcx> Binder<'tcx, ExistentialPredicate<'tcx>> { 387 ( 0.00%) pub fn with_self_ty(&self, tcx: TyCtxt<'tcx>, self_ty: Ty<'tcx>) -> ty::Predicate<'tcx> { . use crate::ty::ToPredicate; 215 ( 0.00%) match self.skip_binder() { . ExistentialPredicate::Trait(tr) => { . self.rebind(tr).with_self_ty(tcx, self_ty).without_const().to_predicate(tcx) . } . ExistentialPredicate::Projection(p) => { . self.rebind(p.with_self_ty(tcx, self_ty)).to_predicate(tcx) . } . ExistentialPredicate::AutoTrait(did) => { . let trait_ref = self.rebind(ty::TraitRef { . def_id: did, . substs: tcx.mk_substs_trait(self_ty, &[]), . }); . trait_ref.without_const().to_predicate(tcx) . } . } 344 ( 0.00%) } . } . . impl<'tcx> List>> { . /// Returns the "principal `DefId`" of this set of existential predicates. . /// . /// A Rust trait object type consists (in addition to a lifetime bound) . /// of a set of trait bounds, which are separated into any number . /// of auto-trait bounds, and at most one non-auto-trait bound. The -- line 826 ---------------------------------------- -- line 840 ---------------------------------------- . /// . /// It is also possible to have a "trivial" trait object that . /// consists only of auto traits, with no principal - for example, . /// `dyn Send + Sync`. In that case, the set of auto-trait bounds . /// is `{Send, Sync}`, while there is no principal. These trait objects . /// have a "trivial" vtable consisting of just the size, alignment, . /// and destructor. . pub fn principal(&self) -> Option>> { 135 ( 0.00%) self[0] 135 ( 0.00%) .map_bound(|this| match this { . ExistentialPredicate::Trait(tr) => Some(tr), . _ => None, . }) . .transpose() . } . 43 ( 0.00%) pub fn principal_def_id(&self) -> Option { . self.principal().map(|trait_ref| trait_ref.skip_binder().def_id) 86 ( 0.00%) } . . #[inline] . pub fn projection_bounds<'a>( . &'a self, . ) -> impl Iterator>> + 'a { . self.iter().filter_map(|predicate| { . predicate . .map_bound(|pred| match pred { -- line 866 ---------------------------------------- -- line 886 ---------------------------------------- . /// T: Foo . /// . /// This would be represented by a trait-reference where the `DefId` is the . /// `DefId` for the trait `Foo` and the substs define `T` as parameter 0, . /// and `U` as parameter 1. . /// . /// Trait references also appear in object types like `Foo`, but in . /// that case the `Self` parameter is absent from the substitutions. 6,129 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] 195,558 ( 0.01%) #[derive(HashStable, TypeFoldable)] . pub struct TraitRef<'tcx> { 866 ( 0.00%) pub def_id: DefId, 285,542 ( 0.02%) pub substs: SubstsRef<'tcx>, . } . . impl<'tcx> TraitRef<'tcx> { 595 ( 0.00%) pub fn new(def_id: DefId, substs: SubstsRef<'tcx>) -> TraitRef<'tcx> { . TraitRef { def_id, substs } 2,380 ( 0.00%) } . . /// Returns a `TraitRef` of the form `P0: Foo` where `Pi` . /// are the parameters defined on trait. 234 ( 0.00%) pub fn identity(tcx: TyCtxt<'tcx>, def_id: DefId) -> Binder<'tcx, TraitRef<'tcx>> { 104 ( 0.00%) ty::Binder::dummy(TraitRef { . def_id, 156 ( 0.00%) substs: InternalSubsts::identity_for_item(tcx, def_id), . }) 208 ( 0.00%) } . . #[inline] 3 ( 0.00%) pub fn self_ty(&self) -> Ty<'tcx> { . self.substs.type_at(0) 2 ( 0.00%) } . 440 ( 0.00%) pub fn from_method( . tcx: TyCtxt<'tcx>, . trait_id: DefId, . substs: SubstsRef<'tcx>, . ) -> ty::TraitRef<'tcx> { . let defs = tcx.generics_of(trait_id); . 55 ( 0.00%) ty::TraitRef { def_id: trait_id, substs: tcx.intern_substs(&substs[..defs.params.len()]) } 605 ( 0.00%) } . } . . pub type PolyTraitRef<'tcx> = Binder<'tcx, TraitRef<'tcx>>; . . impl<'tcx> PolyTraitRef<'tcx> { . pub fn self_ty(&self) -> Binder<'tcx, Ty<'tcx>> { . self.map_bound_ref(|tr| tr.self_ty()) . } . . pub fn def_id(&self) -> DefId { 225 ( 0.00%) self.skip_binder().def_id 75 ( 0.00%) } . 638 ( 0.00%) pub fn to_poly_trait_predicate(&self) -> ty::PolyTraitPredicate<'tcx> { 1,276 ( 0.00%) self.map_bound(|trait_ref| ty::TraitPredicate { . trait_ref, . constness: ty::BoundConstness::NotConst, . polarity: ty::ImplPolarity::Positive, . }) 638 ( 0.00%) } . } . . /// An existential reference to a trait, where `Self` is erased. . /// For example, the trait object `Trait<'a, 'b, X, Y>` is: . /// . /// exists T. T: Trait<'a, 'b, X, Y> . /// . /// The substitutions don't include the erased `Self`, only trait . /// type and lifetime parameters (`[X, Y]` and `['a, 'b]` above). 36 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] 1,634 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub struct ExistentialTraitRef<'tcx> { 210 ( 0.00%) pub def_id: DefId, 1,824 ( 0.00%) pub substs: SubstsRef<'tcx>, . } . . impl<'tcx> ExistentialTraitRef<'tcx> { 4 ( 0.00%) pub fn erase_self_ty( . tcx: TyCtxt<'tcx>, . trait_ref: ty::TraitRef<'tcx>, . ) -> ty::ExistentialTraitRef<'tcx> { . // Assert there is a Self. . trait_ref.substs.type_at(0); . . ty::ExistentialTraitRef { . def_id: trait_ref.def_id, . substs: tcx.intern_substs(&trait_ref.substs[1..]), . } 4 ( 0.00%) } . . /// Object types don't have a self type specified. Therefore, when . /// we convert the principal trait-ref into a normal trait-ref, . /// you must give *some* self type. A common choice is `mk_err()` . /// or some placeholder type. . pub fn with_self_ty(&self, tcx: TyCtxt<'tcx>, self_ty: Ty<'tcx>) -> ty::TraitRef<'tcx> { . // otherwise the escaping vars would be captured by the binder . // debug_assert!(!self_ty.has_escaping_bound_vars()); -- line 985 ---------------------------------------- -- line 999 ---------------------------------------- . /// we convert the principal trait-ref into a normal trait-ref, . /// you must give *some* self type. A common choice is `mk_err()` . /// or some placeholder type. . pub fn with_self_ty(&self, tcx: TyCtxt<'tcx>, self_ty: Ty<'tcx>) -> ty::PolyTraitRef<'tcx> { . self.map_bound(|trait_ref| trait_ref.with_self_ty(tcx, self_ty)) . } . } . 10,579 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] . #[derive(HashStable)] . pub enum BoundVariableKind { . Ty(BoundTyKind), . Region(BoundRegionKind), . Const, . } . . /// Binder is a binder for higher-ranked lifetimes or types. It is part of the -- line 1015 ---------------------------------------- -- line 1016 ---------------------------------------- . /// compiler's representation for things like `for<'a> Fn(&'a isize)` . /// (which would be represented by the type `PolyTraitRef == . /// Binder<'tcx, TraitRef>`). Note that when we instantiate, . /// erase, or otherwise "discharge" these bound vars, we change the . /// type from `Binder<'tcx, T>` to just `T` (see . /// e.g., `liberate_late_bound_regions`). . /// . /// `Decodable` and `Encodable` are implemented for `Binder` using the `impl_binder_encode_decode!` macro. 4,477 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)] 158,924 ( 0.01%) pub struct Binder<'tcx, T>(T, &'tcx List); . . impl<'tcx, T> Binder<'tcx, T> . where . T: TypeFoldable<'tcx>, . { . /// Wraps `value` in a binder, asserting that `value` does not . /// contain any bound vars that would be bound by the . /// binder. This is commonly used to 'inject' a value T into a . /// different binding level. 9,390 ( 0.00%) pub fn dummy(value: T) -> Binder<'tcx, T> { 78,979 ( 0.00%) assert!(!value.has_escaping_bound_vars()); 164,996 ( 0.01%) Binder(value, ty::List::empty()) 9,364 ( 0.00%) } . . pub fn bind_with_vars(value: T, vars: &'tcx List) -> Binder<'tcx, T> { . if cfg!(debug_assertions) { . let mut validator = ValidateBoundVars::new(vars); . value.visit_with(&mut validator); . } 3,449 ( 0.00%) Binder(value, vars) . } . } . . impl<'tcx, T> Binder<'tcx, T> { . /// Skips the binder and returns the "bound" value. This is a . /// risky thing to do because it's easy to get confused about . /// De Bruijn indices and the like. It is usually better to . /// discharge the binder using `no_bound_vars` or -- line 1053 ---------------------------------------- -- line 1059 ---------------------------------------- . /// accounting. . /// . /// Some examples where `skip_binder` is reasonable: . /// . /// - extracting the `DefId` from a PolyTraitRef; . /// - comparing the self type of a PolyTraitRef to see if it is equal to . /// a type parameter `X`, since the type `X` does not reference any regions . pub fn skip_binder(self) -> T { 321,747 ( 0.02%) self.0 . } . . pub fn bound_vars(&self) -> &'tcx List { 104 ( 0.00%) self.1 . } . . pub fn as_ref(&self) -> Binder<'tcx, &T> { 562 ( 0.00%) Binder(&self.0, self.1) . } . . pub fn map_bound_ref_unchecked(&self, f: F) -> Binder<'tcx, U> . where . F: FnOnce(&T) -> U, . { . let value = f(&self.0); . Binder(value, self.1) -- line 1083 ---------------------------------------- -- line 1085 ---------------------------------------- . . pub fn map_bound_ref>(&self, f: F) -> Binder<'tcx, U> . where . F: FnOnce(&T) -> U, . { . self.as_ref().map_bound(f) . } . 188 ( 0.00%) pub fn map_bound>(self, f: F) -> Binder<'tcx, U> . where . F: FnOnce(T) -> U, . { 6,039 ( 0.00%) let value = f(self.0); . if cfg!(debug_assertions) { . let mut validator = ValidateBoundVars::new(self.1); . value.visit_with(&mut validator); . } 341,161 ( 0.02%) Binder(value, self.1) 188 ( 0.00%) } . . pub fn try_map_bound, E>(self, f: F) -> Result, E> . where . F: FnOnce(T) -> Result, . { . let value = f(self.0)?; . if cfg!(debug_assertions) { . let mut validator = ValidateBoundVars::new(self.1); . value.visit_with(&mut validator); . } 804 ( 0.00%) Ok(Binder(value, self.1)) . } . . /// Wraps a `value` in a binder, using the same bound variables as the . /// current `Binder`. This should not be used if the new value *changes* . /// the bound variables. Note: the (old or new) value itself does not . /// necessarily need to *name* all the bound variables. . /// . /// This currently doesn't do anything different than `bind`, because we -- line 1122 ---------------------------------------- -- line 1126 ---------------------------------------- . pub fn rebind(&self, value: U) -> Binder<'tcx, U> . where . U: TypeFoldable<'tcx>, . { . if cfg!(debug_assertions) { . let mut validator = ValidateBoundVars::new(self.bound_vars()); . value.visit_with(&mut validator); . } 1,991 ( 0.00%) Binder(value, self.1) . } . . /// Unwraps and returns the value within, but only if it contains . /// no bound vars at all. (In other words, if this binder -- . /// and indeed any enclosing binder -- doesn't bind anything at . /// all.) Otherwise, returns `None`. . /// . /// (One could imagine having a method that just unwraps a single -- line 1142 ---------------------------------------- -- line 1143 ---------------------------------------- . /// binder, but permits late-bound vars bound by enclosing . /// binders, but that would require adjusting the debruijn . /// indices, and given the shallow binding structure we often use, . /// would not be that useful.) . pub fn no_bound_vars(self) -> Option . where . T: TypeFoldable<'tcx>, . { 36,289 ( 0.00%) if self.0.has_escaping_bound_vars() { None } else { Some(self.skip_binder()) } 240 ( 0.00%) } . . /// Splits the contents into two things that share the same binder . /// level as the original, returning two distinct binders. . /// . /// `f` should consider bound regions at depth 1 to be free, and . /// anything it produces with bound regions at depth 1 will be . /// bound in the resulting return values. . pub fn split(self, f: F) -> (Binder<'tcx, U>, Binder<'tcx, V>) -- line 1160 ---------------------------------------- -- line 1170 ---------------------------------------- . pub fn transpose(self) -> Option> { . let bound_vars = self.1; . self.0.map(|v| Binder(v, bound_vars)) . } . } . . /// Represents the projection of an associated type. In explicit UFCS . /// form this would be written `>::N`. 124 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] 9,548 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub struct ProjectionTy<'tcx> { . /// The parameters of the associated item. 6,024 ( 0.00%) pub substs: SubstsRef<'tcx>, . . /// The `DefId` of the `TraitItem` for the associated type `N`. . /// . /// Note that this is not the `DefId` of the `TraitRef` containing this . /// associated type, which is in `tcx.associated_item(item_def_id).container`. 5,346 ( 0.00%) pub item_def_id: DefId, . } . . impl<'tcx> ProjectionTy<'tcx> { 4,550 ( 0.00%) pub fn trait_def_id(&self, tcx: TyCtxt<'tcx>) -> DefId { 1,300 ( 0.00%) tcx.associated_item(self.item_def_id).container.id() 5,200 ( 0.00%) } . . /// Extracts the underlying trait reference and own substs from this projection. . /// For example, if this is a projection of `::Item<'a>`, . /// then this function would return a `T: Iterator` trait reference and `['a]` as the own substs 504 ( 0.00%) pub fn trait_ref_and_own_substs( . &self, . tcx: TyCtxt<'tcx>, . ) -> (ty::TraitRef<'tcx>, &'tcx [ty::GenericArg<'tcx>]) { 216 ( 0.00%) let def_id = tcx.associated_item(self.item_def_id).container.id(); . let trait_generics = tcx.generics_of(def_id); 360 ( 0.00%) ( . ty::TraitRef { def_id, substs: self.substs.truncate_to(tcx, trait_generics) }, . &self.substs[trait_generics.count()..], . ) 648 ( 0.00%) } . . /// Extracts the underlying trait reference from this projection. . /// For example, if this is a projection of `::Item`, . /// then this function would return a `T: Iterator` trait reference. . /// . /// WARNING: This will drop the substs for generic associated types . /// consider calling [Self::trait_ref_and_own_substs] to get those . /// as well. 5,661 ( 0.00%) pub fn trait_ref(&self, tcx: TyCtxt<'tcx>) -> ty::TraitRef<'tcx> { 629 ( 0.00%) let def_id = self.trait_def_id(tcx); 629 ( 0.00%) ty::TraitRef { def_id, substs: self.substs.truncate_to(tcx, tcx.generics_of(def_id)) } 6,919 ( 0.00%) } . 1,310 ( 0.00%) pub fn self_ty(&self) -> Ty<'tcx> { 3,930 ( 0.00%) self.substs.type_at(0) 2,620 ( 0.00%) } . } . . #[derive(Copy, Clone, Debug, TypeFoldable)] . pub struct GenSig<'tcx> { . pub resume_ty: Ty<'tcx>, . pub yield_ty: Ty<'tcx>, . pub return_ty: Ty<'tcx>, . } -- line 1233 ---------------------------------------- -- line 1235 ---------------------------------------- . pub type PolyGenSig<'tcx> = Binder<'tcx, GenSig<'tcx>>; . . /// Signature of a function type, which we have arbitrarily . /// decided to use to refer to the input/output types. . /// . /// - `inputs`: is the list of arguments and their modes. . /// - `output`: is the return type. . /// - `c_variadic`: indicates whether this is a C-variadic function. 11,525 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] 7,570 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub struct FnSig<'tcx> { 1,489 ( 0.00%) pub inputs_and_output: &'tcx List>, 12,548 ( 0.00%) pub c_variadic: bool, 2,451 ( 0.00%) pub unsafety: hir::Unsafety, 12,906 ( 0.00%) pub abi: abi::Abi, . } . . impl<'tcx> FnSig<'tcx> { 8,375 ( 0.00%) pub fn inputs(&self) -> &'tcx [Ty<'tcx>] { 37,244 ( 0.00%) &self.inputs_and_output[..self.inputs_and_output.len() - 1] 16,750 ( 0.00%) } . 5,220 ( 0.00%) pub fn output(&self) -> Ty<'tcx> { 39,351 ( 0.00%) self.inputs_and_output[self.inputs_and_output.len() - 1] 10,440 ( 0.00%) } . . // Creates a minimal `FnSig` to be used when encountering a `TyKind::Error` in a fallible . // method. . fn fake() -> FnSig<'tcx> { . FnSig { . inputs_and_output: List::empty(), . c_variadic: false, . unsafety: hir::Unsafety::Normal, -- line 1267 ---------------------------------------- -- line 1270 ---------------------------------------- . } . } . . pub type PolyFnSig<'tcx> = Binder<'tcx, FnSig<'tcx>>; . . impl<'tcx> PolyFnSig<'tcx> { . #[inline] . pub fn inputs(&self) -> Binder<'tcx, &'tcx [Ty<'tcx>]> { 1,181 ( 0.00%) self.map_bound_ref_unchecked(|fn_sig| fn_sig.inputs()) . } . #[inline] . pub fn input(&self, index: usize) -> ty::Binder<'tcx, Ty<'tcx>> { 3,056 ( 0.00%) self.map_bound_ref(|fn_sig| fn_sig.inputs()[index]) . } . pub fn inputs_and_output(&self) -> ty::Binder<'tcx, &'tcx List>> { . self.map_bound_ref(|fn_sig| fn_sig.inputs_and_output) 166 ( 0.00%) } . #[inline] . pub fn output(&self) -> ty::Binder<'tcx, Ty<'tcx>> { 2,013 ( 0.00%) self.map_bound_ref(|fn_sig| fn_sig.output()) . } . pub fn c_variadic(&self) -> bool { 332 ( 0.00%) self.skip_binder().c_variadic 166 ( 0.00%) } . pub fn unsafety(&self) -> hir::Unsafety { 1,144 ( 0.00%) self.skip_binder().unsafety 572 ( 0.00%) } . pub fn abi(&self) -> abi::Abi { 1,696 ( 0.00%) self.skip_binder().abi 424 ( 0.00%) } . } . . pub type CanonicalPolyFnSig<'tcx> = Canonical<'tcx, Binder<'tcx, FnSig<'tcx>>>; . 4 ( 0.00%) #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] . #[derive(HashStable)] . pub struct ParamTy { . pub index: u32, . pub name: Symbol, . } . . impl<'tcx> ParamTy { . pub fn new(index: u32, name: Symbol) -> ParamTy { -- line 1312 ---------------------------------------- -- line 1321 ---------------------------------------- . pub fn to_ty(self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> { . tcx.mk_ty_param(self.index, self.name) . } . } . . #[derive(Copy, Clone, Hash, TyEncodable, TyDecodable, Eq, PartialEq, Ord, PartialOrd)] . #[derive(HashStable)] . pub struct ParamConst { 60 ( 0.00%) pub index: u32, 60 ( 0.00%) pub name: Symbol, . } . . impl ParamConst { . pub fn new(index: u32, name: Symbol) -> ParamConst { . ParamConst { index, name } . } . . pub fn for_def(def: &ty::GenericParamDef) -> ParamConst { -- line 1338 ---------------------------------------- -- line 1440 ---------------------------------------- . /// the inference variable is supposed to satisfy the relation . /// *for every value of the placeholder region*. To ensure that doesn't . /// happen, you can use `leak_check`. This is more clearly explained . /// by the [rustc dev guide]. . /// . /// [1]: https://smallcultfollowing.com/babysteps/blog/2013/10/29/intermingled-parameter-lists/ . /// [2]: https://smallcultfollowing.com/babysteps/blog/2013/11/04/intermingled-parameter-lists/ . /// [rustc dev guide]: https://rustc-dev-guide.rust-lang.org/traits/hrtb.html 942,991 ( 0.05%) #[derive(Clone, PartialEq, Eq, Hash, Copy, TyEncodable, TyDecodable, PartialOrd, Ord)] 14 ( 0.00%) pub enum RegionKind { . /// Region bound in a type or fn declaration which will be . /// substituted 'early' -- that is, at the same time when type . /// parameters are substituted. . ReEarlyBound(EarlyBoundRegion), . . /// Region bound in a function scope, which will be substituted when the . /// function is called. 28,950 ( 0.00%) ReLateBound(ty::DebruijnIndex, BoundRegion), . . /// When checking a function body, the types of all arguments and so forth . /// that refer to bound region parameters are modified to refer to free . /// region parameters. . ReFree(FreeRegion), . . /// Static data that has an "infinite" lifetime. Top in the region lattice. . ReStatic, -- line 1465 ---------------------------------------- -- line 1478 ---------------------------------------- . /// regions visible from `U`, but not less than regions not visible . /// from `U`. . ReEmpty(ty::UniverseIndex), . . /// Erased region, used by trait selection, in MIR and during codegen. . ReErased, . } . 3,860 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, Hash, TyEncodable, TyDecodable, Debug, PartialOrd, Ord)] . pub struct EarlyBoundRegion { 5,005 ( 0.00%) pub def_id: DefId, 5,806 ( 0.00%) pub index: u32, 12,651 ( 0.00%) pub name: Symbol, . } . . /// A **`const`** **v**ariable **ID**. . #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] . pub struct ConstVid<'tcx> { 695 ( 0.00%) pub index: u32, 299 ( 0.00%) pub phantom: PhantomData<&'tcx ()>, . } . . rustc_index::newtype_index! { . /// A **region** (lifetime) **v**ariable **ID**. . pub struct RegionVid { . DEBUG_FORMAT = custom, . } . } -- line 1505 ---------------------------------------- -- line 1513 ---------------------------------------- . rustc_index::newtype_index! { . pub struct BoundVar { .. } . } . . #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] . #[derive(HashStable)] . pub struct BoundTy { . pub var: BoundVar, 662 ( 0.00%) pub kind: BoundTyKind, . } . 11,329 ( 0.00%) #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] . #[derive(HashStable)] . pub enum BoundTyKind { . Anon, . Param(Symbol), . } . . impl From for BoundTy { . fn from(var: BoundVar) -> Self { -- line 1532 ---------------------------------------- -- line 1616 ---------------------------------------- . RegionKind::RePlaceholder(placeholder) => placeholder.name.is_named(), . RegionKind::ReEmpty(_) => false, . RegionKind::ReErased => false, . } . } . . #[inline] . pub fn is_late_bound(&self) -> bool { 882 ( 0.00%) matches!(*self, ty::ReLateBound(..)) . } . . #[inline] . pub fn is_placeholder(&self) -> bool { . matches!(*self, ty::RePlaceholder(..)) . } . . #[inline] . pub fn bound_at_or_above_binder(&self, index: ty::DebruijnIndex) -> bool { 26,826 ( 0.00%) match *self { . ty::ReLateBound(debruijn, _) => debruijn >= index, . _ => false, . } . } . . pub fn type_flags(&self) -> TypeFlags { . let mut flags = TypeFlags::empty(); . 45,806 ( 0.00%) match *self { . ty::ReVar(..) => { . flags = flags | TypeFlags::HAS_FREE_REGIONS; . flags = flags | TypeFlags::HAS_FREE_LOCAL_REGIONS; . flags = flags | TypeFlags::HAS_RE_INFER; . } . ty::RePlaceholder(..) => { . flags = flags | TypeFlags::HAS_FREE_REGIONS; . flags = flags | TypeFlags::HAS_FREE_LOCAL_REGIONS; -- line 1651 ---------------------------------------- -- line 1669 ---------------------------------------- . ty::ReErased => { . flags = flags | TypeFlags::HAS_RE_ERASED; . } . } . . debug!("type_flags({:?}) = {:?}", self, flags); . . flags 1,538 ( 0.00%) } . . /// Given an early-bound or free region, returns the `DefId` where it was bound. . /// For example, consider the regions in this snippet of code: . /// . /// ``` . /// impl<'a> Foo { . /// ^^ -- early bound, declared on an impl . /// -- line 1685 ---------------------------------------- -- line 1713 ---------------------------------------- . . #[inline(always)] . pub fn flags(&self) -> TypeFlags { . self.flags . } . . #[inline] . pub fn is_unit(&self) -> bool { 1,510 ( 0.00%) match self.kind() { 353 ( 0.00%) Tuple(ref tys) => tys.is_empty(), . _ => false, . } . } . . #[inline] . pub fn is_never(&self) -> bool { 101,177 ( 0.01%) matches!(self.kind(), Never) . } . . #[inline] . pub fn is_primitive(&self) -> bool { . self.kind().is_primitive() . } . . #[inline] -- line 1737 ---------------------------------------- -- line 1741 ---------------------------------------- . . #[inline] . pub fn is_ref(&self) -> bool { . matches!(self.kind(), Ref(..)) . } . . #[inline] . pub fn is_ty_var(&self) -> bool { 95,675 ( 0.01%) matches!(self.kind(), Infer(TyVar(_))) . } . . #[inline] . pub fn ty_vid(&self) -> Option { 21,328 ( 0.00%) match self.kind() { 1,698 ( 0.00%) &Infer(TyVar(vid)) => Some(vid), . _ => None, . } . } . . #[inline] . pub fn is_ty_infer(&self) -> bool { 66 ( 0.00%) matches!(self.kind(), Infer(_)) . } . . #[inline] . pub fn is_phantom_data(&self) -> bool { . if let Adt(def, _) = self.kind() { def.is_phantom_data() } else { false } . } . . #[inline] -- line 1770 ---------------------------------------- -- line 1791 ---------------------------------------- . match self.kind() { . RawPtr(TypeAndMut { ty, .. }) | Ref(_, ty, _) => matches!(ty.kind(), Slice(_) | Str), . _ => false, . } . } . . #[inline] . pub fn is_array(&self) -> bool { 59 ( 0.00%) matches!(self.kind(), Array(..)) . } . . #[inline] . pub fn is_simd(&self) -> bool { . match self.kind() { . Adt(def, _) => def.repr.simd(), . _ => false, . } . } . 26 ( 0.00%) pub fn sequence_element_type(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> { 52 ( 0.00%) match self.kind() { . Array(ty, _) | Slice(ty) => ty, . Str => tcx.mk_mach_uint(ty::UintTy::U8), . _ => bug!("`sequence_element_type` called on non-sequence value: {}", self), . } 26 ( 0.00%) } . . pub fn simd_size_and_type(&self, tcx: TyCtxt<'tcx>) -> (u64, Ty<'tcx>) { . match self.kind() { . Adt(def, substs) => { . assert!(def.repr.simd(), "`simd_size_and_type` called on non-SIMD type"); . let variant = def.non_enum_variant(); . let f0_ty = variant.fields[0].ty(tcx, substs); . -- line 1824 ---------------------------------------- -- line 1838 ---------------------------------------- . } . } . _ => bug!("`simd_size_and_type` called on invalid type"), . } . } . . #[inline] . pub fn is_region_ptr(&self) -> bool { 26 ( 0.00%) matches!(self.kind(), Ref(..)) . } . . #[inline] . pub fn is_mutable_ptr(&self) -> bool { . matches!( . self.kind(), . RawPtr(TypeAndMut { mutbl: hir::Mutability::Mut, .. }) . | Ref(_, _, hir::Mutability::Mut) -- line 1854 ---------------------------------------- -- line 1861 ---------------------------------------- . match self.kind() { . Ref(_, _, mutability) => Some(*mutability), . _ => None, . } . } . . #[inline] . pub fn is_unsafe_ptr(&self) -> bool { 1,099 ( 0.00%) matches!(self.kind(), RawPtr(_)) . } . . /// Tests if this is any kind of primitive pointer type (reference, raw pointer, fn pointer). . #[inline] . pub fn is_any_ptr(&self) -> bool { . self.is_region_ptr() || self.is_unsafe_ptr() || self.is_fn_ptr() . } . . #[inline] . pub fn is_box(&self) -> bool { 79,336 ( 0.00%) match self.kind() { 12,388 ( 0.00%) Adt(def, _) => def.is_box(), . _ => false, . } . } . . /// Panics if called on any type other than `Box`. . pub fn boxed_ty(&self) -> Ty<'tcx> { . match self.kind() { . Adt(def, substs) if def.is_box() => substs.type_at(0), -- line 1889 ---------------------------------------- -- line 1891 ---------------------------------------- . } . } . . /// A scalar type is one that denotes an atomic datum, with no sub-components. . /// (A RawPtr is scalar because it represents a non-managed pointer, so its . /// contents are abstract to rustc.) . #[inline] . pub fn is_scalar(&self) -> bool { 633 ( 0.00%) matches!( 1,487 ( 0.00%) self.kind(), . Bool | Char . | Int(_) . | Float(_) . | Uint(_) . | FnDef(..) . | FnPtr(_) . | RawPtr(_) . | Infer(IntVar(_) | FloatVar(_)) -- line 1908 ---------------------------------------- -- line 1922 ---------------------------------------- . . #[inline] . pub fn is_enum(&self) -> bool { . matches!(self.kind(), Adt(adt_def, _) if adt_def.is_enum()) . } . . #[inline] . pub fn is_union(&self) -> bool { 3,321 ( 0.00%) matches!(self.kind(), Adt(adt_def, _) if adt_def.is_union()) . } . . #[inline] . pub fn is_closure(&self) -> bool { 608 ( 0.00%) matches!(self.kind(), Closure(..)) . } . . #[inline] . pub fn is_generator(&self) -> bool { 912 ( 0.00%) matches!(self.kind(), Generator(..)) . } . . #[inline] . pub fn is_integral(&self) -> bool { 2,961 ( 0.00%) matches!(self.kind(), Infer(IntVar(_)) | Int(_) | Uint(_)) . } . . #[inline] . pub fn is_fresh_ty(&self) -> bool { . matches!(self.kind(), Infer(FreshTy(_))) . } . . #[inline] . pub fn is_fresh(&self) -> bool { 633 ( 0.00%) matches!(self.kind(), Infer(FreshTy(_) | FreshIntTy(_) | FreshFloatTy(_))) . } . . #[inline] . pub fn is_char(&self) -> bool { . matches!(self.kind(), Char) . } . . #[inline] . pub fn is_numeric(&self) -> bool { . self.is_integral() || self.is_floating_point() . } . . #[inline] . pub fn is_signed(&self) -> bool { 4 ( 0.00%) matches!(self.kind(), Int(_)) . } . . #[inline] . pub fn is_ptr_sized_integral(&self) -> bool { 528 ( 0.00%) matches!(self.kind(), Int(ty::IntTy::Isize) | Uint(ty::UintTy::Usize)) . } . . #[inline] . pub fn has_concrete_skeleton(&self) -> bool { . !matches!(self.kind(), Param(_) | Infer(_) | Error(_)) . } . . /// Returns the type and mutability of `*ty`. . /// . /// The parameter `explicit` indicates if this is an *explicit* dereference. . /// Some types -- notably unsafe ptrs -- can only be dereferenced explicitly. 34,161 ( 0.00%) pub fn builtin_deref(&self, explicit: bool) -> Option> { 235,664 ( 0.01%) match self.kind() { 38,742 ( 0.00%) Adt(def, _) if def.is_box() => { . Some(TypeAndMut { ty: self.boxed_ty(), mutbl: hir::Mutability::Not }) . } 13,768 ( 0.00%) Ref(_, ty, mutbl) => Some(TypeAndMut { ty, mutbl: *mutbl }), . RawPtr(mt) if explicit => Some(*mt), . _ => None, . } 68,322 ( 0.00%) } . . /// Returns the type of `ty[i]`. . pub fn builtin_index(&self) -> Option> { 750 ( 0.00%) match self.kind() { . Array(ty, _) | Slice(ty) => Some(ty), . _ => None, . } 96 ( 0.00%) } . 12,976 ( 0.00%) pub fn fn_sig(&self, tcx: TyCtxt<'tcx>) -> PolyFnSig<'tcx> { 6,488 ( 0.00%) match self.kind() { 4,611 ( 0.00%) FnDef(def_id, substs) => tcx.fn_sig(*def_id).subst(tcx, substs), 425 ( 0.00%) FnPtr(f) => *f, . Error(_) => { . // ignore errors (#54954) . ty::Binder::dummy(FnSig::fake()) . } . Closure(..) => bug!( . "to get the signature of a closure, use `substs.as_closure().sig()` not `fn_sig()`", . ), . _ => bug!("Ty::fn_sig() called on non-fn type: {:?}", self), . } 14,598 ( 0.00%) } . . #[inline] . pub fn is_fn(&self) -> bool { 174 ( 0.00%) matches!(self.kind(), FnDef(..) | FnPtr(_)) . } . . #[inline] . pub fn is_fn_ptr(&self) -> bool { . matches!(self.kind(), FnPtr(_)) . } . . #[inline] . pub fn is_impl_trait(&self) -> bool { . matches!(self.kind(), Opaque(..)) . } . . #[inline] . pub fn ty_adt_def(&self) -> Option<&'tcx AdtDef> { 46,987 ( 0.00%) match self.kind() { . Adt(adt, _) => Some(adt), . _ => None, . } . } . . /// Iterates over tuple fields. . /// Panics when called on anything but a tuple. 83 ( 0.00%) pub fn tuple_fields(&self) -> impl DoubleEndedIterator> { 11,732 ( 0.00%) match self.kind() { 5,959 ( 0.00%) Tuple(substs) => substs.iter().map(|field| field.expect_ty()), . _ => bug!("tuple_fields called on non-tuple"), . } 166 ( 0.00%) } . . /// Get the `i`-th element of a tuple. . /// Panics when called on anything but a tuple. 50 ( 0.00%) pub fn tuple_element_ty(&self, i: usize) -> Option> { 100 ( 0.00%) match self.kind() { 100 ( 0.00%) Tuple(substs) => substs.iter().nth(i).map(|field| field.expect_ty()), . _ => bug!("tuple_fields called on non-tuple"), . } 100 ( 0.00%) } . . /// If the type contains variants, returns the valid range of variant indices. . // . // FIXME: This requires the optimized MIR in the case of generators. . #[inline] . pub fn variant_range(&self, tcx: TyCtxt<'tcx>) -> Option> { . match self.kind() { . TyKind::Adt(adt, _) => Some(adt.variant_range()), -- line 2068 ---------------------------------------- -- line 2073 ---------------------------------------- . } . } . . /// If the type contains variants, returns the variant for `variant_index`. . /// Panics if `variant_index` is out of range. . // . // FIXME: This requires the optimized MIR in the case of generators. . #[inline] 48,370 ( 0.00%) pub fn discriminant_for_variant( . &self, . tcx: TyCtxt<'tcx>, . variant_index: VariantIdx, . ) -> Option> { 24,185 ( 0.00%) match self.kind() { 9,674 ( 0.00%) TyKind::Adt(adt, _) if adt.variants.is_empty() => { . // This can actually happen during CTFE, see . // https://github.com/rust-lang/rust/issues/89765. . None . } 4,837 ( 0.00%) TyKind::Adt(adt, _) if adt.is_enum() => { . Some(adt.discriminant_for_variant(tcx, variant_index)) . } . TyKind::Generator(def_id, substs, _) => { . Some(substs.as_generator().discriminant_for_variant(*def_id, tcx, variant_index)) . } . _ => None, . } 38,696 ( 0.00%) } . . /// Returns the type of the discriminant of this type. 147,210 ( 0.01%) pub fn discriminant_ty(&'tcx self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> { 73,605 ( 0.00%) match self.kind() { 117,768 ( 0.01%) ty::Adt(adt, _) if adt.is_enum() => adt.repr.discr_type().to_ty(tcx), . ty::Generator(_, substs, _) => substs.as_generator().discr_ty(tcx), . . ty::Param(_) | ty::Projection(_) | ty::Opaque(..) | ty::Infer(ty::TyVar(_)) => { . let assoc_items = tcx.associated_item_def_ids( . tcx.require_lang_item(hir::LangItem::DiscriminantKind, None), . ); . tcx.mk_projection(assoc_items[0], tcx.intern_substs(&[self.into()])) . } -- line 2113 ---------------------------------------- -- line 2135 ---------------------------------------- . | ty::Infer(IntVar(_) | FloatVar(_)) => tcx.types.u8, . . ty::Bound(..) . | ty::Placeholder(_) . | ty::Infer(FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => { . bug!("`discriminant_ty` applied to unexpected type: {:?}", self) . } . } 117,768 ( 0.01%) } . . /// Returns the type of metadata for (potentially fat) pointers to this type. . pub fn ptr_metadata_ty( . &'tcx self, . tcx: TyCtxt<'tcx>, . normalize: impl FnMut(Ty<'tcx>) -> Ty<'tcx>, . ) -> Ty<'tcx> { . let tail = tcx.struct_tail_with_normalize(self, normalize); -- line 2151 ---------------------------------------- -- line 2200 ---------------------------------------- . /// function converts such a special type into the closure . /// kind. To go the other way, use . /// `tcx.closure_kind_ty(closure_kind)`. . /// . /// Note that during type checking, we use an inference variable . /// to represent the closure kind, because it has not yet been . /// inferred. Once upvar inference (in `rustc_typeck/src/check/upvar.rs`) . /// is complete, that type variable will be unified. 516 ( 0.00%) pub fn to_opt_closure_kind(&self) -> Option { 1,032 ( 0.00%) match self.kind() { 1,032 ( 0.00%) Int(int_ty) => match int_ty { . ty::IntTy::I8 => Some(ty::ClosureKind::Fn), . ty::IntTy::I16 => Some(ty::ClosureKind::FnMut), . ty::IntTy::I32 => Some(ty::ClosureKind::FnOnce), . _ => bug!("cannot convert type `{:?}` to a closure kind", self), . }, . . // "Bound" types appear in canonical queries when the . // closure type is not yet known . Bound(..) | Infer(_) => None, . . Error(_) => Some(ty::ClosureKind::Fn), . . _ => bug!("cannot convert type `{:?}` to a closure kind", self), . } 516 ( 0.00%) } . . /// Fast path helper for testing if a type is `Sized`. . /// . /// Returning true means the type is known to be sized. Returning . /// `false` means nothing -- could be sized, might not be. . /// . /// Note that we could never rely on the fact that a type such as `[_]` is . /// trivially `!Sized` because we could be in a type environment with a . /// bound such as `[_]: Copy`. A function with such a bound obviously never . /// can be called, but that doesn't mean it shouldn't typecheck. This is why . /// this method doesn't return `Option`. 778,572 ( 0.05%) pub fn is_trivially_sized(&self, tcx: TyCtxt<'tcx>) -> bool { 519,048 ( 0.03%) match self.kind() { . ty::Infer(ty::IntVar(_) | ty::FloatVar(_)) . | ty::Uint(_) . | ty::Int(_) . | ty::Bool . | ty::Float(_) . | ty::FnDef(..) . | ty::FnPtr(_) . | ty::RawPtr(..) -- line 2246 ---------------------------------------- -- line 2250 ---------------------------------------- . | ty::GeneratorWitness(..) . | ty::Array(..) . | ty::Closure(..) . | ty::Never . | ty::Error(_) => true, . . ty::Str | ty::Slice(_) | ty::Dynamic(..) | ty::Foreign(..) => false, . 115,090 ( 0.01%) ty::Tuple(tys) => tys.iter().all(|ty| ty.expect_ty().is_trivially_sized(tcx)), . 90,531 ( 0.01%) ty::Adt(def, _substs) => def.sized_constraint(tcx).is_empty(), . . ty::Projection(_) | ty::Param(_) | ty::Opaque(..) => false, . . ty::Infer(ty::TyVar(_)) => false, . . ty::Bound(..) . | ty::Placeholder(..) . | ty::Infer(ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => { . bug!("`is_trivially_sized` applied to unexpected type: {:?}", self) . } . } 778,572 ( 0.05%) } . } . . /// Extra information about why we ended up with a particular variance. . /// This is only used to add more information to error messages, and . /// has no effect on soundness. While choosing the 'wrong' `VarianceDiagInfo` . /// may lead to confusing notes in error messages, it will never cause . /// a miscompilation or unsoundness. . /// . /// When in doubt, use `VarianceDiagInfo::default()` 60 ( 0.00%) #[derive(Copy, Clone, Debug, Default, PartialEq, Eq, PartialOrd, Ord)] . pub enum VarianceDiagInfo<'tcx> { . /// No additional information - this is the default. . /// We will not add any additional information to error messages. . #[default] . None, . /// We switched our variance because a generic argument occurs inside . /// the invariant generic argument of another type. . Invariant { -- line 2290 ---------------------------------------- -- line 2295 ---------------------------------------- . /// (e.g. `0` for `*mut T`, `1` for `MyStruct<'CovariantParam, 'InvariantParam>`) . param_index: u32, . }, . } . . impl<'tcx> VarianceDiagInfo<'tcx> { . /// Mirrors `Variance::xform` - used to 'combine' the existing . /// and new `VarianceDiagInfo`s when our variance changes. 13,486 ( 0.00%) pub fn xform(self, other: VarianceDiagInfo<'tcx>) -> VarianceDiagInfo<'tcx> { . // For now, just use the first `VarianceDiagInfo::Invariant` that we see 20,229 ( 0.00%) match self { . VarianceDiagInfo::None => other, . VarianceDiagInfo::Invariant { .. } => self, . } 6,743 ( 0.00%) } . } 4,792,616 ( 0.28%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/mir/interpret/allocation.rs -------------------------------------------------------------------------------- Ir -- line 18 ---------------------------------------- . }; . use crate::ty; . . /// This type represents an Allocation in the Miri/CTFE core engine. . /// . /// Its public API is rather low-level, working directly with allocation offsets and a custom error . /// type to account for the lack of an AllocId on this level. The Miri/CTFE core engine `memory` . /// module provides higher-level access. 5,680 ( 0.00%) #[derive(Clone, Debug, Eq, PartialEq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] . #[derive(HashStable)] . pub struct Allocation { . /// The actual bytes of the allocation. . /// Note that the bytes of a pointer represent the offset of the pointer. 568 ( 0.00%) bytes: Box<[u8]>, . /// Maps from byte addresses to extra data for each pointer. . /// Only the first byte of a pointer is inserted into the map; i.e., . /// every entry in this map applies to `pointer_size` consecutive bytes starting . /// at the given offset. . relocations: Relocations, . /// Denotes which part of this allocation is initialized. . init_mask: InitMask, . /// The alignment of the allocation to detect unaligned reads. -- line 39 ---------------------------------------- -- line 91 ---------------------------------------- . impl AllocRange { . #[inline(always)] . pub fn end(self) -> Size { . self.start + self.size // This does overflow checking. . } . . /// Returns the `subrange` within this range; panics if it is not a subrange. . #[inline] 85,702 ( 0.00%) pub fn subrange(self, subrange: AllocRange) -> AllocRange { . let sub_start = self.start + subrange.start; . let range = alloc_range(sub_start, subrange.size); 85,702 ( 0.00%) assert!(range.end() <= self.end(), "access outside the bounds for given AllocRange"); . range 257,106 ( 0.01%) } . } . . // The constructors are all without extra; the extra gets added by a machine hook later. . impl Allocation { . /// Creates an allocation initialized by the given bytes . pub fn from_bytes<'a>( . slice: impl Into>, . align: Align, . mutability: Mutability, . ) -> Self { . let bytes = Box::<[u8]>::from(slice.into()); . let size = Size::from_bytes(bytes.len()); 768 ( 0.00%) Self { . bytes, . relocations: Relocations::new(), 288 ( 0.00%) init_mask: InitMask::new(size, true), . align, . mutability, . extra: (), . } . } . . pub fn from_bytes_byte_aligned_immutable<'a>(slice: impl Into>) -> Self { . Allocation::from_bytes(slice, Align::ONE, Mutability::Not) . } . . /// Try to create an Allocation of `size` bytes, failing if there is not enough memory . /// available to the compiler to do so. 115,731 ( 0.01%) pub fn uninit(size: Size, align: Align, panic_on_fail: bool) -> InterpResult<'static, Self> { . let bytes = Box::<[u8]>::try_new_zeroed_slice(size.bytes_usize()).map_err(|_| { . // This results in an error that can happen non-deterministically, since the memory . // available to the compiler can change between runs. Normally queries are always . // deterministic. However, we can be non-determinstic here because all uses of const . // evaluation (including ConstProp!) will make compilation fail (via hard error . // or ICE) upon encountering a `MemoryExhausted` error. . if panic_on_fail { . panic!("Allocation::uninit called with panic_on_fail had allocation failure") -- line 141 ---------------------------------------- -- line 142 ---------------------------------------- . } . ty::tls::with(|tcx| { . tcx.sess.delay_span_bug(DUMMY_SP, "exhausted memory during interpreation") . }); . InterpError::ResourceExhaustion(ResourceExhaustionInfo::MemoryExhausted) . })?; . // SAFETY: the box was zero-allocated, which is a valid initial value for Box<[u8]> . let bytes = unsafe { bytes.assume_init() }; 147,294 ( 0.01%) Ok(Allocation { . bytes, . relocations: Relocations::new(), 31,563 ( 0.00%) init_mask: InitMask::new(size, false), . align, . mutability: Mutability::Mut, . extra: (), . }) 94,689 ( 0.01%) } . } . . impl Allocation { . /// Convert Tag and add Extra fields . pub fn convert_tag_add_extra( . self, . cx: &impl HasDataLayout, . extra: Extra, -- line 166 ---------------------------------------- -- line 194 ---------------------------------------- . . /// Raw accessors. Provide access to otherwise private bytes. . impl Allocation { . pub fn len(&self) -> usize { . self.bytes.len() . } . . pub fn size(&self) -> Size { 98,565 ( 0.01%) Size::from_bytes(self.len()) . } . . /// Looks at a slice which may describe uninitialized bytes or describe a relocation. This differs . /// from `get_bytes_with_uninit_and_ptr` in that it does no relocation checks (even on the . /// edges) at all. . /// This must not be used for reads affecting the interpreter execution. . pub fn inspect_with_uninit_and_ptr_outside_interpreter(&self, range: Range) -> &[u8] { . &self.bytes[range] -- line 210 ---------------------------------------- -- line 227 ---------------------------------------- . /// or pointer bytes. You should never call this, call `get_bytes` or . /// `get_bytes_with_uninit_and_ptr` instead, . /// . /// This function also guarantees that the resulting pointer will remain stable . /// even when new allocations are pushed to the `HashMap`. `copy_repeatedly` relies . /// on that. . /// . /// It is the caller's responsibility to check bounds and alignment beforehand. 814,380 ( 0.05%) fn get_bytes_internal( . &self, . cx: &impl HasDataLayout, . range: AllocRange, . check_init_and_ptr: bool, . ) -> AllocResult<&[u8]> { 135,730 ( 0.01%) if check_init_and_ptr { . self.check_init(range)?; . self.check_relocations(cx, range)?; . } else { . // We still don't want relocations on the *edges*. . self.check_relocation_edges(cx, range)?; . } . 271,460 ( 0.02%) Ok(&self.bytes[range.start.bytes_usize()..range.end().bytes_usize()]) 610,785 ( 0.04%) } . . /// Checks that these bytes are initialized and not pointer bytes, and then return them . /// as a slice. . /// . /// It is the caller's responsibility to check bounds and alignment beforehand. . /// Most likely, you want to use the `PlaceTy` and `OperandTy`-based methods . /// on `InterpCx` instead. . #[inline] -- line 258 ---------------------------------------- -- line 265 ---------------------------------------- . /// . /// It is the caller's responsibility to check bounds and alignment beforehand. . #[inline] . pub fn get_bytes_with_uninit_and_ptr( . &self, . cx: &impl HasDataLayout, . range: AllocRange, . ) -> AllocResult<&[u8]> { 159,910 ( 0.01%) self.get_bytes_internal(cx, range, false) . } . . /// Just calling this already marks everything as defined and removes relocations, . /// so be sure to actually put data there! . /// . /// It is the caller's responsibility to check bounds and alignment beforehand. . /// Most likely, you want to use the `PlaceTy` and `OperandTy`-based methods . /// on `InterpCx` instead. 249,403 ( 0.01%) pub fn get_bytes_mut( . &mut self, . cx: &impl HasDataLayout, . range: AllocRange, . ) -> AllocResult<&mut [u8]> { . self.mark_init(range, true); 113,365 ( 0.01%) self.clear_relocations(cx, range)?; . 90,692 ( 0.01%) Ok(&mut self.bytes[range.start.bytes_usize()..range.end().bytes_usize()]) 181,384 ( 0.01%) } . . /// A raw pointer variant of `get_bytes_mut` that avoids invalidating existing aliases into this memory. 53,196 ( 0.00%) pub fn get_bytes_mut_ptr( . &mut self, . cx: &impl HasDataLayout, . range: AllocRange, . ) -> AllocResult<*mut [u8]> { . self.mark_init(range, true); 24,180 ( 0.00%) self.clear_relocations(cx, range)?; . 9,672 ( 0.00%) assert!(range.end().bytes_usize() <= self.bytes.len()); // need to do our own bounds-check . let begin_ptr = self.bytes.as_mut_ptr().wrapping_add(range.start.bytes_usize()); 9,672 ( 0.00%) let len = range.end().bytes_usize() - range.start.bytes_usize(); 19,344 ( 0.00%) Ok(ptr::slice_from_raw_parts_mut(begin_ptr, len)) 38,688 ( 0.00%) } . } . . /// Reading and writing. . impl Allocation { . /// Validates that `ptr.offset` and `ptr.offset + size` do not point to the middle of a . /// relocation. If `allow_uninit_and_ptr` is `false`, also enforces that the memory in the . /// given range contains neither relocations nor uninitialized bytes. . pub fn check_bytes( -- line 314 ---------------------------------------- -- line 329 ---------------------------------------- . . /// Reads a *non-ZST* scalar. . /// . /// ZSTs can't be read because in order to obtain a `Pointer`, we need to check . /// for ZSTness anyway due to integer pointers being valid for ZSTs. . /// . /// It is the caller's responsibility to check bounds and alignment beforehand. . /// Most likely, you want to call `InterpCx::read_scalar` instead of this method. 819,377 ( 0.05%) pub fn read_scalar( . &self, . cx: &impl HasDataLayout, . range: AllocRange, . ) -> AllocResult> { . // `get_bytes_with_uninit_and_ptr` tests relocation edges. . // We deliberately error when loading data that partially has provenance, or partially . // initialized data (that's the check below), into a scalar. The LLVM semantics of this are . // unclear so we are conservative. See for -- line 345 ---------------------------------------- -- line 348 ---------------------------------------- . // Uninit check happens *after* we established that the alignment is correct. . // We must not return `Ok()` for unaligned pointers! . if self.is_init(range).is_err() { . // This inflates uninitialized bytes to the entire scalar, even if only a few . // bytes are uninitialized. . return Ok(ScalarMaybeUninit::Uninit); . } . // Now we do the actual reading. 63,029 ( 0.00%) let bits = read_target_uint(cx.data_layout().endian, bytes).unwrap(); . // See if we got a pointer. 63,029 ( 0.00%) if range.size != cx.data_layout().pointer_size { . // Not a pointer. . // *Now*, we better make sure that the inside is free of relocations too. . self.check_relocations(cx, range)?; . } else { . // Maybe a pointer. . if let Some(&prov) = self.relocations.get(&range.start) { . let ptr = Pointer::new(prov, Size::from_bytes(bits)); 150 ( 0.00%) return Ok(ScalarMaybeUninit::from_pointer(ptr, cx)); . } . } . // We don't. Just return the bits. 377,994 ( 0.02%) Ok(ScalarMaybeUninit::Scalar(Scalar::from_uint(bits, range.size))) 567,261 ( 0.03%) } . . /// Writes a *non-ZST* scalar. . /// . /// ZSTs can't be read because in order to obtain a `Pointer`, we need to check . /// for ZSTness anyway due to integer pointers being valid for ZSTs. . /// . /// It is the caller's responsibility to check bounds and alignment beforehand. . /// Most likely, you want to call `InterpCx::write_scalar` instead of this method. 158,711 ( 0.01%) pub fn write_scalar( . &mut self, . cx: &impl HasDataLayout, . range: AllocRange, . val: ScalarMaybeUninit, . ) -> AllocResult { 22,673 ( 0.00%) assert!(self.mutability == Mutability::Mut); . 68,019 ( 0.00%) let val = match val { . ScalarMaybeUninit::Scalar(scalar) => scalar, . ScalarMaybeUninit::Uninit => { . self.mark_init(range, false); . return Ok(()); . } . }; . . // `to_bits_or_ptr_internal` is the right method because we just want to store this data . // as-is into memory. 90,692 ( 0.01%) let (bytes, provenance) = match val.to_bits_or_ptr_internal(range.size) { . Err(val) => { . let (provenance, offset) = val.into_parts(); . (u128::from(offset.bytes()), Some(provenance)) . } . Ok(data) => (data, None), . }; . 68,019 ( 0.00%) let endian = cx.data_layout().endian; 68,019 ( 0.00%) let dst = self.get_bytes_mut(cx, range)?; . write_target_uint(endian, dst, bytes).unwrap(); . . // See if we have to also write a relocation. 68,007 ( 0.00%) if let Some(provenance) = provenance { 48 ( 0.00%) self.relocations.0.insert(range.start, provenance); . } . . Ok(()) 204,057 ( 0.01%) } . } . . /// Relocations. . impl Allocation { . /// Returns all relocations overlapping with the given pointer-offset pair. 678,669 ( 0.04%) pub fn get_relocations(&self, cx: &impl HasDataLayout, range: AllocRange) -> &[(Size, Tag)] { . // We have to go back `pointer_size - 1` bytes, as that one would still overlap with . // the beginning of this range. 693,177 ( 0.04%) let start = range.start.bytes().saturating_sub(cx.data_layout().pointer_size.bytes() - 1); . self.relocations.range(Size::from_bytes(start)..range.end()) 904,892 ( 0.05%) } . . /// Checks that there are no relocations overlapping with the given range. . #[inline(always)] . fn check_relocations(&self, cx: &impl HasDataLayout, range: AllocRange) -> AllocResult { 1,192,284 ( 0.07%) if self.get_relocations(cx, range).is_empty() { . Ok(()) . } else { . Err(AllocError::ReadPointerAsBytes) . } . } . . /// Removes all relocations inside the given range. . /// If there are relocations overlapping with the edges, they . /// are removed as well *and* the bytes they cover are marked as . /// uninitialized. This is a somewhat odd "spooky action at a distance", . /// but it allows strictly more code to run than if we would just error . /// immediately in that case. 302,599 ( 0.02%) fn clear_relocations(&mut self, cx: &impl HasDataLayout, range: AllocRange) -> AllocResult . where . Tag: Provenance, . { . // Find the start and end of the given range and its outermost relocations. . let (first, last) = { . // Find all relocations overlapping the given range. 137,545 ( 0.01%) let relocations = self.get_relocations(cx, range); 27,509 ( 0.00%) if relocations.is_empty() { . return Ok(()); . } . . ( . relocations.first().unwrap().0, . relocations.last().unwrap().0 + cx.data_layout().pointer_size, . ) . }; -- line 461 ---------------------------------------- -- line 478 ---------------------------------------- . } . self.init_mask.set_range(end, last, false); . } . . // Forget all the relocations. . self.relocations.0.remove_range(first..last); . . Ok(()) 192,563 ( 0.01%) } . . /// Errors if there are relocations overlapping with the edges of the . /// given memory range. . #[inline] . fn check_relocation_edges(&self, cx: &impl HasDataLayout, range: AllocRange) -> AllocResult { . self.check_relocations(cx, alloc_range(range.start, Size::ZERO))?; . self.check_relocations(cx, alloc_range(range.end(), Size::ZERO))?; . Ok(()) -- line 494 ---------------------------------------- -- line 496 ---------------------------------------- . } . . /// "Relocations" stores the provenance information of pointers stored in memory. . #[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] . pub struct Relocations(SortedMap); . . impl Relocations { . pub fn new() -> Self { 21,234 ( 0.00%) Relocations(SortedMap::new()) . } . . // The caller must guarantee that the given relocations are already sorted . // by address and contain no duplicates. . pub fn from_presorted(r: Vec<(Size, Tag)>) -> Self { . Relocations(SortedMap::from_presorted_elements(r)) . } . } -- line 512 ---------------------------------------- -- line 520 ---------------------------------------- . } . . /// A partial, owned list of relocations to transfer into another allocation. . pub struct AllocationRelocations { . relative_relocations: Vec<(Size, Tag)>, . } . . impl Allocation { 48,360 ( 0.00%) pub fn prepare_relocation_copy( . &self, . cx: &impl HasDataLayout, . src: AllocRange, . dest: Size, . count: u64, . ) -> AllocationRelocations { . let relocations = self.get_relocations(cx, src); 4,836 ( 0.00%) if relocations.is_empty() { 9,672 ( 0.00%) return AllocationRelocations { relative_relocations: Vec::new() }; . } . . let size = src.size; . let mut new_relocations = Vec::with_capacity(relocations.len() * (count as usize)); . . for i in 0..count { . new_relocations.extend(relocations.iter().map(|&(offset, reloc)| { . // compute offset for current repetition -- line 545 ---------------------------------------- -- line 548 ---------------------------------------- . // shift offsets from source allocation to destination allocation . (offset + dest_offset) - src.start, // `Size` operations . reloc, . ) . })); . } . . AllocationRelocations { relative_relocations: new_relocations } 43,524 ( 0.00%) } . . /// Applies a relocation copy. . /// The affected range, as defined in the parameters to `prepare_relocation_copy` is expected . /// to be clear of relocations. 33,852 ( 0.00%) pub fn mark_relocation_range(&mut self, relocations: AllocationRelocations) { 19,344 ( 0.00%) self.relocations.0.insert_presorted(relocations.relative_relocations); 38,688 ( 0.00%) } . } . . //////////////////////////////////////////////////////////////////////////////// . // Uninitialized byte tracking . //////////////////////////////////////////////////////////////////////////////// . . type Block = u64; . -- line 571 ---------------------------------------- -- line 582 ---------------------------------------- . pub const BLOCK_SIZE: u64 = 64; . . #[inline] . fn bit_index(bits: Size) -> (usize, usize) { . // BLOCK_SIZE is the number of bits that can fit in a `Block`. . // Each bit in a `Block` represents the initialization state of one byte of an allocation, . // so we use `.bytes()` here. . let bits = bits.bytes(); 346,248 ( 0.02%) let a = bits / InitMask::BLOCK_SIZE; 95,590 ( 0.01%) let b = bits % InitMask::BLOCK_SIZE; . (usize::try_from(a).unwrap(), usize::try_from(b).unwrap()) . } . . #[inline] . fn size_from_bit_index(block: impl TryInto, bit: impl TryInto) -> Size { . let block = block.try_into().ok().unwrap(); . let bit = bit.try_into().ok().unwrap(); 62,789 ( 0.00%) Size::from_bytes(block * InitMask::BLOCK_SIZE + bit) . } . 42,468 ( 0.00%) pub fn new(size: Size, state: bool) -> Self { 21,234 ( 0.00%) let mut m = InitMask { blocks: vec![], len: Size::ZERO }; 10,617 ( 0.00%) m.grow(size, state); . m 53,085 ( 0.00%) } . 220,072 ( 0.01%) pub fn set_range(&mut self, start: Size, end: Size, new_state: bool) { 55,018 ( 0.00%) let len = self.len; 27,509 ( 0.00%) if end > len { . self.grow(end - len, new_state); . } 275,090 ( 0.02%) self.set_range_inbounds(start, end, new_state); . } . 191,180 ( 0.01%) pub fn set_range_inbounds(&mut self, start: Size, end: Size, new_state: bool) { . let (blocka, bita) = Self::bit_index(start); . let (blockb, bitb) = Self::bit_index(end); 95,590 ( 0.01%) if blocka == blockb { . // First set all bits except the first `bita`, . // then unset the last `64 - bitb` bits. 91,756 ( 0.01%) let range = if bitb == 0 { . u64::MAX << bita . } else { 321,146 ( 0.02%) (u64::MAX << bita) & (u64::MAX >> (64 - bitb)) . }; 91,756 ( 0.01%) if new_state { 30,830 ( 0.00%) self.blocks[blocka] |= range; . } else { 30,096 ( 0.00%) self.blocks[blocka] &= !range; . } . return; . } . // across block boundaries 3,834 ( 0.00%) if new_state { . // Set `bita..64` to `1`. 4,833 ( 0.00%) self.blocks[blocka] |= u64::MAX << bita; . // Set `0..bitb` to `1`. 3,222 ( 0.00%) if bitb != 0 { 6,045 ( 0.00%) self.blocks[blockb] |= u64::MAX >> (64 - bitb); . } . // Fill in all the other blocks (much faster than one bit at a time). . for block in (blocka + 1)..blockb { . self.blocks[block] = u64::MAX; . } . } else { . // Set `bita..64` to `0`. 1,224 ( 0.00%) self.blocks[blocka] &= !(u64::MAX << bita); . // Set `0..bitb` to `0`. 612 ( 0.00%) if bitb != 0 { 36 ( 0.00%) self.blocks[blockb] &= !(u64::MAX >> (64 - bitb)); . } . // Fill in all the other blocks (much faster than one bit at a time). . for block in (blocka + 1)..blockb { 1,000 ( 0.00%) self.blocks[block] = 0; . } . } 95,590 ( 0.01%) } . . #[inline] . pub fn get(&self, i: Size) -> bool { . let (block, bit) = Self::bit_index(i); 33,852 ( 0.00%) (self.blocks[block] & (1 << bit)) != 0 . } . . #[inline] . pub fn set(&mut self, i: Size, new_state: bool) { . let (block, bit) = Self::bit_index(i); . self.set_bit(block, bit, new_state); . } . -- line 671 ---------------------------------------- -- line 673 ---------------------------------------- . fn set_bit(&mut self, block: usize, bit: usize, new_state: bool) { . if new_state { . self.blocks[block] |= 1 << bit; . } else { . self.blocks[block] &= !(1 << bit); . } . } . 63,702 ( 0.00%) pub fn grow(&mut self, amount: Size, new_state: bool) { 21,234 ( 0.00%) if amount.bytes() == 0 { . return; . } . let unused_trailing_bits = 84,936 ( 0.00%) u64::try_from(self.blocks.len()).unwrap() * Self::BLOCK_SIZE - self.len.bytes(); 21,234 ( 0.00%) if amount.bytes() > unused_trailing_bits { 31,851 ( 0.00%) let additional_blocks = amount.bytes() / Self::BLOCK_SIZE + 1; . self.blocks.extend( . // FIXME(oli-obk): optimize this by repeating `new_state as Block`. . iter::repeat(0).take(usize::try_from(additional_blocks).unwrap()), . ); . } 10,617 ( 0.00%) let start = self.len; . self.len += amount; 95,553 ( 0.01%) self.set_range_inbounds(start, start + amount, new_state); // `Size` operation . } . . /// Returns the index of the first bit in `start..end` (end-exclusive) that is equal to is_init. 145,396 ( 0.01%) fn find_bit(&self, start: Size, end: Size, is_init: bool) -> Option { . /// A fast implementation of `find_bit`, . /// which skips over an entire block at a time if it's all 0s (resp. 1s), . /// and finds the first 1 (resp. 0) bit inside a block using `trailing_zeros` instead of a loop. . /// . /// Note that all examples below are written with 8 (instead of 64) bit blocks for simplicity, . /// and with the least significant bit (and lowest block) first: . /// . /// 00000000|00000000 -- line 708 ---------------------------------------- -- line 728 ---------------------------------------- . // start_bit = 3 . // is_init = false . // Note that, for the examples in this function, the most significant bit is written first, . // which is backwards compared to the comments in `find_bit`/`find_bit_fast`. . . // Invert bits so we're always looking for the first set bit. . // ! 0b00111011 . // bits = 0b11000100 290,792 ( 0.02%) let bits = if is_init { bits } else { !bits }; . // Mask off unused start bits. . // 0b11000100 . // & 0b11111000 . // bits = 0b11000000 218,094 ( 0.01%) let bits = bits & (!0 << start_bit); . // Find set bit, if any. . // bit = trailing_zeros(0b11000000) . // bit = 6 145,396 ( 0.01%) if bits == 0 { . None . } else { . let bit = bits.trailing_zeros(); . Some(InitMask::size_from_bit_index(block, bit)) . } . } . 72,698 ( 0.00%) if start >= end { . return None; . } . . // Convert `start` and `end` to block indexes and bit indexes within each block. . // We must convert `end` to an inclusive bound to handle block boundaries correctly. . // . // For example: . // -- line 761 ---------------------------------------- -- line 819 ---------------------------------------- . // The block marked (3) in this example is the first block that will be handled by this loop, . // and it will be skipped for that reason: . // . // (3) . // -------- . // (e) 01000000|00000000|00000001 . // ^~~~~~~~~~~~~~~~~~^ . // start end 19,818 ( 0.00%) if start_block < end_block_inclusive { . // This loop is written in a specific way for performance. . // Notably: `..end_block_inclusive + 1` is used for an inclusive range instead of `..=end_block_inclusive`, . // and `.zip(start_block + 1..)` is used to track the index instead of `.enumerate().skip().take()`, . // because both alternatives result in significantly worse codegen. . // `end_block_inclusive + 1` is guaranteed not to wrap, because `end_block_inclusive <= end / BLOCK_SIZE`, . // and `BLOCK_SIZE` (the number of bits per block) will always be at least 8 (1 byte). . for (&bits, block) in init_mask.blocks[start_block + 1..end_block_inclusive + 1] . .iter() -- line 835 ---------------------------------------- -- line 879 ---------------------------------------- . "optimized implementation of find_bit is wrong for start={:?} end={:?} is_init={} init_mask={:#?}", . start, . end, . is_init, . self . ); . . result 145,396 ( 0.01%) } . } . . /// A contiguous chunk of initialized or uninitialized memory. . pub enum InitChunk { . Init(Range), . Uninit(Range), . } . -- line 895 ---------------------------------------- -- line 913 ---------------------------------------- . . impl InitMask { . /// Checks whether the range `start..end` (end-exclusive) is entirely initialized. . /// . /// Returns `Ok(())` if it's initialized. Otherwise returns a range of byte . /// indexes for the first contiguous span of the uninitialized access. . #[inline] . pub fn is_range_initialized(&self, start: Size, end: Size) -> Result<(), Range> { 63,029 ( 0.00%) if end > self.len { . return Err(self.len..end); . } . 315,145 ( 0.02%) let uninit_start = self.find_bit(start, end, false); . 126,058 ( 0.01%) match uninit_start { . Some(uninit_start) => { . let uninit_end = self.find_bit(uninit_start, end, true).unwrap_or(end); . Err(uninit_start..uninit_end) . } . None => Ok(()), . } . } . -- line 935 ---------------------------------------- -- line 938 ---------------------------------------- . /// . /// The iterator guarantees the following: . /// - Chunks are nonempty. . /// - Chunks are adjacent (each range's start is equal to the previous range's end). . /// - Chunks span exactly `start..end` (the first starts at `start`, the last ends at `end`). . /// - Chunks alternate between [`InitChunk::Init`] and [`InitChunk::Uninit`]. . #[inline] . pub fn range_as_init_chunks(&self, start: Size, end: Size) -> InitChunkIter<'_> { 4,836 ( 0.00%) assert!(end <= self.len); . 4,836 ( 0.00%) let is_init = if start < end { . self.get(start) . } else { . // `start..end` is empty: there are no chunks, so use some arbitrary value . false . }; . . InitChunkIter { init_mask: self, is_init, start, end } . } -- line 956 ---------------------------------------- -- line 968 ---------------------------------------- . end: Size, . } . . impl<'a> Iterator for InitChunkIter<'a> { . type Item = InitChunk; . . #[inline] . fn next(&mut self) -> Option { 9,669 ( 0.00%) if self.start >= self.end { . return None; . } . . let end_of_chunk = 58,011 ( 0.00%) self.init_mask.find_bit(self.start, self.end, !self.is_init).unwrap_or(self.end); . let range = self.start..end_of_chunk; . . let ret = 33,843 ( 0.00%) Some(if self.is_init { InitChunk::Init(range) } else { InitChunk::Uninit(range) }); . . self.is_init = !self.is_init; . self.start = end_of_chunk; . . ret . } . } . -- line 993 ---------------------------------------- -- line 1010 ---------------------------------------- . access_size: range.size, . uninit_offset: idx_range.start, . uninit_size: idx_range.end - idx_range.start, // `Size` subtraction . })) . }) . } . . pub fn mark_init(&mut self, range: AllocRange, is_init: bool) { 55,018 ( 0.00%) if range.size.bytes() == 0 { . return; . } 27,509 ( 0.00%) assert!(self.mutability == Mutability::Mut); 110,036 ( 0.01%) self.init_mask.set_range(range.start, range.end(), is_init); . } . } . . /// Run-length encoding of the uninit mask. . /// Used to copy parts of a mask multiple times to another allocation. . pub struct InitMaskCompressed { . /// Whether the first range is initialized. . initial: bool, -- line 1030 ---------------------------------------- -- line 1032 ---------------------------------------- . /// The initialization state of the ranges alternate starting with `initial`. . ranges: smallvec::SmallVec<[u64; 1]>, . } . . impl InitMaskCompressed { . pub fn no_bytes_init(&self) -> bool { . // The `ranges` are run-length encoded and of alternating initialization state. . // So if `ranges.len() > 1` then the second block is an initialized range. 9,672 ( 0.00%) !self.initial && self.ranges.len() == 1 4,836 ( 0.00%) } . } . . /// Transferring the initialization mask to other allocations. . impl Allocation { . /// Creates a run-length encoding of the initialization mask; panics if range is empty. . /// . /// This is essentially a more space-efficient version of . /// `InitMask::range_as_init_chunks(...).collect::>()`. 33,852 ( 0.00%) pub fn compress_uninit_range(&self, range: AllocRange) -> InitMaskCompressed { . // Since we are copying `size` bytes from `src` to `dest + i * size` (`for i in 0..repeat`), . // a naive initialization mask copying algorithm would repeatedly have to read the initialization mask from . // the source and write it to the destination. Even if we optimized the memory accesses, . // we'd be doing all of this `repeat` times. . // Therefore we precompute a compressed version of the initialization mask of the source value and . // then write it back `repeat` times without computing any more information from the source. . . // A precomputed cache for ranges of initialized / uninitialized bits -- line 1058 ---------------------------------------- -- line 1062 ---------------------------------------- . . let mut ranges = smallvec::SmallVec::<[u64; 1]>::new(); . . let mut chunks = self.init_mask.range_as_init_chunks(range.start, range.end()).peekable(); . . let initial = chunks.peek().expect("range should be nonempty").is_init(); . . // Here we rely on `range_as_init_chunks` to yield alternating init/uninit chunks. 9,666 ( 0.00%) for chunk in chunks { 19,338 ( 0.00%) let len = chunk.range().end.bytes() - chunk.range().start.bytes(); . ranges.push(len); . } . 33,852 ( 0.00%) InitMaskCompressed { ranges, initial } 38,688 ( 0.00%) } . . /// Applies multiple instances of the run-length encoding to the initialization mask. 53,196 ( 0.00%) pub fn mark_compressed_init_range( . &mut self, . defined: &InitMaskCompressed, . range: AllocRange, . repeat: u64, . ) { . // An optimization where we can just overwrite an entire range of initialization . // bits if they are going to be uniformly `1` or `0`. 9,672 ( 0.00%) if defined.ranges.len() <= 1 { 30 ( 0.00%) self.init_mask.set_range_inbounds( . range.start, . range.start + range.size * repeat, // `Size` operations 3 ( 0.00%) defined.initial, . ); . return; . } . . for mut j in 0..repeat { 14,499 ( 0.00%) j *= range.size.bytes(); 9,666 ( 0.00%) j += range.start.bytes(); . let mut cur = defined.initial; . for range in &defined.ranges { . let old_j = j; . j += range; 28,998 ( 0.00%) self.init_mask.set_range_inbounds( . Size::from_bytes(old_j), . Size::from_bytes(j), 38,664 ( 0.00%) cur, . ); . cur = !cur; . } . } 38,664 ( 0.00%) } . } 1,290,842 ( 0.08%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_parse/src/parser/mod.rs -------------------------------------------------------------------------------- Ir -- line 36 ---------------------------------------- . use rustc_session::parse::ParseSess; . use rustc_span::source_map::{MultiSpan, Span, DUMMY_SP}; . use rustc_span::symbol::{kw, sym, Ident, Symbol}; . use tracing::debug; . . use std::ops::Range; . use std::{cmp, mem, slice}; . 70,707 ( 0.00%) bitflags::bitflags! { . struct Restrictions: u8 { . const STMT_EXPR = 1 << 0; . const NO_STRUCT_LITERAL = 1 << 1; . const CONST_EXPR = 1 << 2; . } . } . . #[derive(Clone, Copy, PartialEq, Debug)] -- line 52 ---------------------------------------- -- line 104 ---------------------------------------- . $self.bump(); . return $self.maybe_recover_from_bad_qpath_stage_2($self.prev_token.span, ty); . } . } . } . }; . } . 3,837 ( 0.00%) #[derive(Clone)] . pub struct Parser<'a> { 93 ( 0.00%) pub sess: &'a ParseSess, . /// The current token. 56 ( 0.00%) pub token: Token, . /// The spacing for the current token 59 ( 0.00%) pub token_spacing: Spacing, . /// The previous token. 84 ( 0.00%) pub prev_token: Token, 90 ( 0.00%) pub capture_cfg: bool, 211 ( 0.00%) restrictions: Restrictions, 118 ( 0.00%) expected_tokens: Vec, . // Important: This must only be advanced from `next_tok` . // to ensure that `token_cursor.num_next_calls` is updated properly . token_cursor: TokenCursor, 118 ( 0.00%) desugar_doc_comments: bool, . /// This field is used to keep track of how many left angle brackets we have seen. This is . /// required in order to detect extra leading left angle brackets (`<` characters) and error . /// appropriately. . /// . /// See the comments in the `parse_path_segment` function for more details. 118 ( 0.00%) unmatched_angle_bracket_count: u32, 177 ( 0.00%) max_angle_bracket_count: u32, . /// A list of all unclosed delimiters found by the lexer. If an entry is used for error recovery . /// it gets removed from here. Every entry left at the end gets emitted as an independent . /// error. 59 ( 0.00%) pub(super) unclosed_delims: Vec, . last_unexpected_token_span: Option, . /// Span pointing at the `:` for the last type ascription the parser has seen, and whether it . /// looked like it could have been a mistyped path or literal `Option:Some(42)`). . pub last_type_ascription: Option<(Span, bool /* likely path typo */)>, . /// If present, this `Parser` is not parsing Rust code but rather a macro call. . subparser_name: Option<&'static str>, . capture_state: CaptureState, . /// This allows us to recover when the user forget to add braces around -- line 146 ---------------------------------------- -- line 173 ---------------------------------------- . /// the first macro inner attribute to invoke a proc-macro). . /// When create a `TokenStream`, the inner attributes get inserted . /// into the proper place in the token stream. . pub type ReplaceRange = (Range, Vec<(FlatToken, Spacing)>); . . /// Controls how we capture tokens. Capturing can be expensive, . /// so we try to avoid performing capturing in cases where . /// we will never need an `AttrAnnotatedTokenStream` 59 ( 0.00%) #[derive(Copy, Clone)] . pub enum Capturing { . /// We aren't performing any capturing - this is the default mode. . No, . /// We are capturing tokens . Yes, . } . 242 ( 0.00%) #[derive(Clone)] . struct CaptureState { 236 ( 0.00%) capturing: Capturing, 59 ( 0.00%) replace_ranges: Vec, . inner_attr_ranges: FxHashMap, . } . . impl<'a> Drop for Parser<'a> { . fn drop(&mut self) { 577 ( 0.00%) emit_unclosed_delims(&mut self.unclosed_delims, &self.sess); . } . } . 16,820 ( 0.00%) #[derive(Clone)] . struct TokenCursor { . frame: TokenCursorFrame, 4,053 ( 0.00%) stack: Vec, . desugar_doc_comments: bool, . // Counts the number of calls to `next` or `next_desugared`, . // depending on whether `desugar_doc_comments` is set. 1,227 ( 0.00%) num_next_calls: usize, . // During parsing, we may sometimes need to 'unglue' a . // glued token into two component tokens . // (e.g. '>>' into '>' and '>), so that the parser . // can consume them one at a time. This process . // bypasses the normal capturing mechanism . // (e.g. `num_next_calls` will not be incremented), . // since the 'unglued' tokens due not exist in . // the original `TokenStream`. -- line 217 ---------------------------------------- -- line 226 ---------------------------------------- . // in `Option>` requires us to unglue . // the trailing `>>` token. The `break_last_token` . // field is used to track this token - it gets . // appended to the captured stream when . // we evaluate a `LazyTokenStream` . break_last_token: bool, . } . 7,786 ( 0.00%) #[derive(Clone)] . struct TokenCursorFrame { 3,459 ( 0.00%) delim: token::DelimToken, . span: DelimSpan, . open_delim: bool, 6,918 ( 0.00%) tree_cursor: tokenstream::Cursor, . close_delim: bool, . } . . impl TokenCursorFrame { . fn new(span: DelimSpan, delim: DelimToken, tts: TokenStream) -> Self { 505 ( 0.00%) TokenCursorFrame { . delim, . span, . open_delim: false, 7,234 ( 0.00%) tree_cursor: tts.into_trees(), . close_delim: false, . } . } . } . . impl TokenCursor { 671,916 ( 0.04%) fn next(&mut self) -> (Token, Spacing) { . loop { 329,167 ( 0.02%) let (tree, spacing) = if !self.frame.open_delim { 7,032 ( 0.00%) self.frame.open_delim = true; 35,160 ( 0.00%) TokenTree::open_tt(self.frame.span, self.frame.delim).into() 657,055 ( 0.04%) } else if let Some(tree) = self.frame.tree_cursor.next_with_spacing() { . tree 28,318 ( 0.00%) } else if !self.frame.close_delim { 7,021 ( 0.00%) self.frame.close_delim = true; 35,105 ( 0.00%) TokenTree::close_tt(self.frame.span, self.frame.delim).into() 14,042 ( 0.00%) } else if let Some(frame) = self.stack.pop() { 91,273 ( 0.01%) self.frame = frame; . continue; . } else { 2,106 ( 0.00%) (TokenTree::Token(Token::new(token::Eof, DUMMY_SP)), Spacing::Alone) . }; . 126,050 ( 0.01%) match tree { . TokenTree::Token(token) => { 447,944 ( 0.03%) return (token, spacing); . } . TokenTree::Delimited(sp, delim, tts) => { . let frame = TokenCursorFrame::new(sp, delim, tts); . self.stack.push(mem::replace(&mut self.frame, frame)); . } . } . } 447,944 ( 0.03%) } . 4,070 ( 0.00%) fn next_desugared(&mut self) -> (Token, Spacing) { 1,221 ( 0.00%) let (data, attr_style, sp) = match self.next() { . (Token { kind: token::DocComment(_, attr_style, data), span }, _) => { . (data, attr_style, span) . } 2,035 ( 0.00%) tok => return tok, . }; . . // Searches for the occurrences of `"#*` and returns the minimum number of `#`s . // required to wrap the text. . let mut num_of_hashes = 0; . let mut count = 0; . for ch in data.as_str().chars() { . count = match ch { -- line 298 ---------------------------------------- -- line 332 ---------------------------------------- . .iter() . .cloned() . .collect::() . }, . ), . )); . . self.next() 3,663 ( 0.00%) } . } . 3,990 ( 0.00%) #[derive(Debug, Clone, PartialEq)] . enum TokenType { 3,204 ( 0.00%) Token(TokenKind), . Keyword(Symbol), . Operator, . Lifetime, . Ident, . Path, . Type, . Const, . } -- line 353 ---------------------------------------- -- line 378 ---------------------------------------- . /// The separator token. . sep: Option, . /// `true` if a trailing separator is allowed. . trailing_sep_allowed: bool, . } . . impl SeqSep { . fn trailing_allowed(t: TokenKind) -> SeqSep { 66 ( 0.00%) SeqSep { sep: Some(t), trailing_sep_allowed: true } . } . . fn none() -> SeqSep { . SeqSep { sep: None, trailing_sep_allowed: false } . } . } . . pub enum FollowedByType { . Yes, . No, . } . . fn token_descr_opt(token: &Token) -> Option<&'static str> { 302 ( 0.00%) Some(match token.kind { 604 ( 0.00%) _ if token.is_special_ident() => "reserved identifier", 604 ( 0.00%) _ if token.is_used_keyword() => "keyword", 604 ( 0.00%) _ if token.is_unused_keyword() => "reserved keyword", . token::DocComment(..) => "doc comment", . _ => return None, . }) . } . 1,057 ( 0.00%) pub(super) fn token_descr(token: &Token) -> String { 302 ( 0.00%) let token_str = pprust::token_to_string(token); . match token_descr_opt(token) { . Some(prefix) => format!("{} `{}`", prefix, token_str), 1,057 ( 0.00%) _ => format!("`{}`", token_str), . } 755 ( 0.00%) } . . impl<'a> Parser<'a> { 1,414 ( 0.00%) pub fn new( . sess: &'a ParseSess, . tokens: TokenStream, . desugar_doc_comments: bool, . subparser_name: Option<&'static str>, . ) -> Self { 101 ( 0.00%) let mut start_frame = TokenCursorFrame::new(DelimSpan::dummy(), token::NoDelim, tokens); 202 ( 0.00%) start_frame.open_delim = true; . start_frame.close_delim = true; . 3,131 ( 0.00%) let mut parser = Parser { . sess, 101 ( 0.00%) token: Token::dummy(), . token_spacing: Spacing::Alone, 101 ( 0.00%) prev_token: Token::dummy(), . capture_cfg: false, . restrictions: Restrictions::empty(), . expected_tokens: Vec::new(), . token_cursor: TokenCursor { 606 ( 0.00%) frame: start_frame, . stack: Vec::new(), . num_next_calls: 0, . desugar_doc_comments, . break_last_token: false, . }, . desugar_doc_comments, . unmatched_angle_bracket_count: 0, . max_angle_bracket_count: 0, -- line 445 ---------------------------------------- -- line 451 ---------------------------------------- . capturing: Capturing::No, . replace_ranges: Vec::new(), . inner_attr_ranges: Default::default(), . }, . current_closure: None, . }; . . // Make parser point to the first token. 202 ( 0.00%) parser.bump(); . . parser 909 ( 0.00%) } . . fn next_tok(&mut self, fallback_span: Span) -> (Token, Spacing) { . loop { 334,116 ( 0.02%) let (mut next, spacing) = if self.desugar_doc_comments { 1,628 ( 0.00%) self.token_cursor.next_desugared() . } else { 165,837 ( 0.01%) self.token_cursor.next() . }; 222,744 ( 0.01%) self.token_cursor.num_next_calls += 1; . // We've retrieved an token from the underlying . // cursor, so we no longer need to worry about . // an unglued token. See `break_and_eat` for more details 55,686 ( 0.00%) self.token_cursor.break_last_token = false; 222,744 ( 0.01%) if next.span.is_dummy() { . // Tweak the location for better diagnostics, but keep syntactic context intact. 424 ( 0.00%) next.span = fallback_span.with_ctxt(next.span.ctxt()); . } 188,121 ( 0.01%) if matches!( 111,372 ( 0.01%) next.kind, . token::OpenDelim(token::NoDelim) | token::CloseDelim(token::NoDelim) . ) { . continue; . } 222,744 ( 0.01%) return (next, spacing); . } . } . . pub fn unexpected(&mut self) -> PResult<'a, T> { . match self.expect_one_of(&[], &[]) { . Err(e) => Err(e), . // We can get `Ok(true)` from `recover_closing_delimiter` . // which is called in `expected_one_of_not_found`. . Ok(_) => FatalError.raise(), . } . } . . /// Expects and consumes the token `t`. Signals an error if the next token is not `t`. 210,627 ( 0.01%) pub fn expect(&mut self, t: &TokenKind) -> PResult<'a, bool /* recovered */> { 23,403 ( 0.00%) if self.expected_tokens.is_empty() { 792 ( 0.00%) if self.token == *t { 660 ( 0.00%) self.bump(); . Ok(false) . } else { . self.unexpected_try_recover(t) . } . } else { 279,252 ( 0.02%) self.expect_one_of(slice::from_ref(t), &[]) . } 351,045 ( 0.02%) } . . /// Expect next token to be edible or inedible token. If edible, . /// then consume it; if inedible, then return without consuming . /// anything. Signal a fatal error if next token is unexpected. 285,240 ( 0.02%) pub fn expect_one_of( . &mut self, . edible: &[TokenKind], . inedible: &[TokenKind], . ) -> PResult<'a, bool /* recovered */> { 47,540 ( 0.00%) if edible.contains(&self.token.kind) { 70,257 ( 0.00%) self.bump(); . Ok(false) . } else if inedible.contains(&self.token.kind) { . // leave it in the input . Ok(false) . } else if self.last_unexpected_token_span == Some(self.token.span) { . FatalError.raise(); . } else { . self.expected_one_of_not_found(edible, inedible) . } 356,550 ( 0.02%) } . . // Public for rustfmt usage. . pub fn parse_ident(&mut self) -> PResult<'a, Ident> { 31,829 ( 0.00%) self.parse_ident_common(true) . } . . fn ident_or_err(&mut self) -> PResult<'a, (Ident, /* is_raw */ bool)> { 24,183 ( 0.00%) self.token.ident().ok_or_else(|| match self.prev_token.kind { . TokenKind::DocComment(..) => { . self.span_err(self.prev_token.span, Error::UselessDocComment) . } . _ => self.expected_ident_found(), . }) . } . 55,545 ( 0.00%) fn parse_ident_common(&mut self, recover: bool) -> PResult<'a, Ident> { 7,935 ( 0.00%) let (ident, is_raw) = self.ident_or_err()?; 47,610 ( 0.00%) if !is_raw && ident.is_reserved() { . let mut err = self.expected_ident_found(); . if recover { . err.emit(); . } else { . return Err(err); . } . } 31,740 ( 0.00%) self.bump(); . Ok(ident) 79,350 ( 0.00%) } . . /// Checks if the next token is `tok`, and returns `true` if so. . /// . /// This method will automatically add `tok` to `expected_tokens` if `tok` is not . /// encountered. 1,563,170 ( 0.09%) fn check(&mut self, tok: &TokenKind) -> bool { 671,834 ( 0.04%) let is_present = self.token == *tok; 448,772 ( 0.03%) if !is_present { 1,009,174 ( 0.06%) self.expected_tokens.push(TokenType::Token(tok.clone())); . } . is_present 1,563,170 ( 0.09%) } . . /// Consumes a token 'tok' if it exists. Returns whether the given token was present. 28 ( 0.00%) pub fn eat(&mut self, tok: &TokenKind) -> bool { 253,641 ( 0.01%) let is_present = self.check(tok); 167,405 ( 0.01%) if is_present { 18,160 ( 0.00%) self.bump() . } . is_present 35 ( 0.00%) } . . /// If the next token is the given keyword, returns `true` without eating it. . /// An expectation is also added for diagnostics purposes. 12,315 ( 0.00%) fn check_keyword(&mut self, kw: Symbol) -> bool { 2,174 ( 0.00%) self.expected_tokens.push(TokenType::Keyword(kw)); 73,738 ( 0.00%) self.token.is_keyword(kw) . } . . /// If the next token is the given keyword, eats it and returns `true`. . /// Otherwise, returns `false`. An expectation is also added for diagnostics purposes. . // Public for rustfmt usage. 26,855 ( 0.00%) pub fn eat_keyword(&mut self, kw: Symbol) -> bool { 17,818 ( 0.00%) if self.check_keyword(kw) { 1,731 ( 0.00%) self.bump(); . true . } else { . false . } 26,855 ( 0.00%) } . . fn eat_keyword_noexpect(&mut self, kw: Symbol) -> bool { 1,878 ( 0.00%) if self.token.is_keyword(kw) { 396 ( 0.00%) self.bump(); . true . } else { . false . } . } . . /// If the given word is not a keyword, signals an error. . /// If the next token is not the given word, signals an error. . /// Otherwise, eats it. 190 ( 0.00%) fn expect_keyword(&mut self, kw: Symbol) -> PResult<'a, ()> { . if !self.eat_keyword(kw) { self.unexpected() } else { Ok(()) } 152 ( 0.00%) } . . /// Is the given keyword `kw` followed by a non-reserved identifier? 15,192 ( 0.00%) fn is_kw_followed_by_ident(&self, kw: Symbol) -> bool { 7,596 ( 0.00%) self.token.is_keyword(kw) && self.look_ahead(1, |t| t.is_ident() && !t.is_reserved_ident()) 17,091 ( 0.00%) } . 45,036 ( 0.00%) fn check_or_expected(&mut self, ok: bool, typ: TokenType) -> bool { 15,970 ( 0.00%) if ok { . true . } else { 2,684 ( 0.00%) self.expected_tokens.push(typ); . false . } 45,036 ( 0.00%) } . . fn check_ident(&mut self) -> bool { 4,167 ( 0.00%) self.check_or_expected(self.token.is_ident(), TokenType::Ident) . } . 25,856 ( 0.00%) fn check_path(&mut self) -> bool { 53,935 ( 0.00%) self.check_or_expected(self.token.is_path_start(), TokenType::Path) 32,320 ( 0.00%) } . . fn check_type(&mut self) -> bool { 400 ( 0.00%) self.check_or_expected(self.token.can_begin_type(), TokenType::Type) . } . . fn check_const_arg(&mut self) -> bool { 400 ( 0.00%) self.check_or_expected(self.token.can_begin_const_arg(), TokenType::Const) . } . 5,517 ( 0.00%) fn check_inline_const(&self, dist: usize) -> bool { 3,065 ( 0.00%) self.is_keyword_ahead(dist, &[kw::Const]) . && self.look_ahead(dist + 1, |t| match t.kind { . token::Interpolated(ref nt) => matches!(**nt, token::NtBlock(..)), . token::OpenDelim(DelimToken::Brace) => true, . _ => false, . }) 5,517 ( 0.00%) } . . /// Checks to see if the next token is either `+` or `+=`. . /// Otherwise returns `false`. . fn check_plus(&mut self) -> bool { 1,216 ( 0.00%) self.check_or_expected( 608 ( 0.00%) self.token.is_like_plus(), 608 ( 0.00%) TokenType::Token(token::BinOp(token::Plus)), . ) . } . . /// Eats the expected token if it's present possibly breaking . /// compound tokens like multi-character operators in process. . /// Returns `true` if the token was eaten. 82,080 ( 0.00%) fn break_and_eat(&mut self, expected: TokenKind) -> bool { 47,880 ( 0.00%) if self.token.kind == expected { 810 ( 0.00%) self.bump(); . return true; . } 32,175 ( 0.00%) match self.token.kind.break_two_token_op() { 35 ( 0.00%) Some((first, second)) if first == expected => { 20 ( 0.00%) let first_span = self.sess.source_map().start_point(self.token.span); 25 ( 0.00%) let second_span = self.token.span.with_lo(first_span.hi()); 45 ( 0.00%) self.token = Token::new(first, first_span); . // Keep track of this token - if we end token capturing now, . // we'll want to append this token to the captured stream. . // . // If we consume any additional tokens, then this token . // is not needed (we'll capture the entire 'glued' token), . // and `next_tok` will set this field to `None` 5 ( 0.00%) self.token_cursor.break_last_token = true; . // Use the spacing of the glued token as the spacing . // of the unglued second token. 70 ( 0.00%) self.bump_with((Token::new(second, second_span), self.token_spacing)); . true . } . _ => { 19,290 ( 0.00%) self.expected_tokens.push(TokenType::Token(expected)); . false . } . } 87,280 ( 0.01%) } . . /// Eats `+` possibly breaking tokens like `+=` in process. . fn eat_plus(&mut self) -> bool { . self.break_and_eat(token::BinOp(token::Plus)) . } . . /// Eats `&` possibly breaking tokens like `&&` in process. . /// Signals an error if `&` is not eaten. . fn expect_and(&mut self) -> PResult<'a, ()> { 684 ( 0.00%) if self.break_and_eat(token::BinOp(token::And)) { Ok(()) } else { self.unexpected() } . } . . /// Eats `|` possibly breaking tokens like `||` in process. . /// Signals an error if `|` was not eaten. . fn expect_or(&mut self) -> PResult<'a, ()> { 132 ( 0.00%) if self.break_and_eat(token::BinOp(token::Or)) { Ok(()) } else { self.unexpected() } . } . . /// Eats `<` possibly breaking tokens like `<<` in process. 1,122 ( 0.00%) fn eat_lt(&mut self) -> bool { 19,943 ( 0.00%) let ate = self.break_and_eat(token::Lt); 13,222 ( 0.00%) if ate { . // See doc comment for `unmatched_angle_bracket_count`. 548 ( 0.00%) self.unmatched_angle_bracket_count += 1; 597 ( 0.00%) self.max_angle_bracket_count += 1; . debug!("eat_lt: (increment) count={:?}", self.unmatched_angle_bracket_count); . } . ate 1,122 ( 0.00%) } . . /// Eats `<` possibly breaking tokens like `<<` in process. . /// Signals an error if `<` was not eaten. . fn expect_lt(&mut self) -> PResult<'a, ()> { . if self.eat_lt() { Ok(()) } else { self.unexpected() } . } . . /// Eats `>` possibly breaking tokens like `>>` in process. . /// Signals an error if `>` was not eaten. . fn expect_gt(&mut self) -> PResult<'a, ()> { 822 ( 0.00%) if self.break_and_eat(token::Gt) { . // See doc comment for `unmatched_angle_bracket_count`. 411 ( 0.00%) if self.unmatched_angle_bracket_count > 0 { 274 ( 0.00%) self.unmatched_angle_bracket_count -= 1; . debug!("expect_gt: (decrement) count={:?}", self.unmatched_angle_bracket_count); . } . Ok(()) . } else { . self.unexpected() . } . } . . fn expect_any_with_type(&mut self, kets: &[&TokenKind], expect: TokenExpectType) -> bool { . kets.iter().any(|k| match expect { 152,880 ( 0.01%) TokenExpectType::Expect => self.check(k), 330 ( 0.00%) TokenExpectType::NoExpect => self.token == **k, . }) . } . . fn parse_seq_to_before_tokens( . &mut self, . kets: &[&TokenKind], . sep: SeqSep, . expect: TokenExpectType, -- line 759 ---------------------------------------- -- line 761 ---------------------------------------- . ) -> PResult<'a, (Vec, bool /* trailing */, bool /* recovered */)> { . let mut first = true; . let mut recovered = false; . let mut trailing = false; . let mut v = vec![]; . let unclosed_delims = !self.unclosed_delims.is_empty(); . . while !self.expect_any_with_type(kets, expect) { 119,482 ( 0.01%) if let token::CloseDelim(..) | token::Eof = self.token.kind { . break; . } 69,514 ( 0.00%) if let Some(ref t) = sep.sep { 64,507 ( 0.00%) if first { . first = false; . } else { 121,022 ( 0.01%) match self.expect(t) { . Ok(false) => { . self.current_closure.take(); . } . Ok(true) => { . self.current_closure.take(); . recovered = true; . break; . } -- line 784 ---------------------------------------- -- line 857 ---------------------------------------- . e.cancel(); . break; . } . } . } . } . } . } 45,326 ( 0.00%) if sep.trailing_sep_allowed && self.expect_any_with_type(kets, expect) { . trailing = true; . break; . } . 22,930 ( 0.00%) let t = f(self)?; 1,507 ( 0.00%) v.push(t); . } . 25,312 ( 0.00%) Ok((v, trailing, recovered)) . } . . fn recover_missing_braces_around_closure_body( . &mut self, . closure_spans: ClosureSpans, . mut expect_err: DiagnosticBuilder<'_>, . ) -> PResult<'a, ()> { . let initial_semicolon = self.token.span; -- line 882 ---------------------------------------- -- line 937 ---------------------------------------- . /// `f` must consume tokens until reaching the next separator or . /// closing bracket. . fn parse_seq_to_before_end( . &mut self, . ket: &TokenKind, . sep: SeqSep, . f: impl FnMut(&mut Parser<'a>) -> PResult<'a, T>, . ) -> PResult<'a, (Vec, bool, bool)> { 19,692 ( 0.00%) self.parse_seq_to_before_tokens(&[ket], sep, TokenExpectType::Expect, f) . } . . /// Parses a sequence, including the closing delimiter. The function . /// `f` must consume tokens until reaching the next separator or . /// closing bracket. 3,580 ( 0.00%) fn parse_seq_to_end( . &mut self, . ket: &TokenKind, . sep: SeqSep, . f: impl FnMut(&mut Parser<'a>) -> PResult<'a, T>, . ) -> PResult<'a, (Vec, bool /* trailing */)> { 12,987 ( 0.00%) let (val, trailing, recovered) = self.parse_seq_to_before_end(ket, sep, f)?; 12,237 ( 0.00%) if !recovered { . self.eat(ket); . } 15,488 ( 0.00%) Ok((val, trailing)) 2,864 ( 0.00%) } . . /// Parses a sequence, including the closing delimiter. The function . /// `f` must consume tokens until reaching the next separator or . /// closing bracket. . fn parse_unspanned_seq( . &mut self, . bra: &TokenKind, . ket: &TokenKind, . sep: SeqSep, . f: impl FnMut(&mut Parser<'a>) -> PResult<'a, T>, . ) -> PResult<'a, (Vec, bool)> { 1,468 ( 0.00%) self.expect(bra)?; 2,864 ( 0.00%) self.parse_seq_to_end(ket, sep, f) . } . . fn parse_delim_comma_seq( . &mut self, . delim: DelimToken, . f: impl FnMut(&mut Parser<'a>) -> PResult<'a, T>, . ) -> PResult<'a, (Vec, bool)> { . self.parse_unspanned_seq( 607 ( 0.00%) &token::OpenDelim(delim), 867 ( 0.00%) &token::CloseDelim(delim), . SeqSep::trailing_allowed(token::Comma), . f, . ) . } . . fn parse_paren_comma_seq( . &mut self, . f: impl FnMut(&mut Parser<'a>) -> PResult<'a, T>, . ) -> PResult<'a, (Vec, bool)> { . self.parse_delim_comma_seq(token::Paren, f) . } . . /// Advance the parser by one token using provided token as the next one. 723,983 ( 0.04%) fn bump_with(&mut self, (next_token, next_spacing): (Token, Spacing)) { . // Bumping after EOF is a bad sign, usually an infinite loop. 334,146 ( 0.02%) if self.prev_token.kind == TokenKind::Eof { . let msg = "attempted to bump the parser past EOF (may be stuck in a loop)"; . self.span_bug(self.token.span, msg); . } . . // Update the current and previous tokens. 222,764 ( 0.01%) self.prev_token = mem::replace(&mut self.token, next_token); 55,691 ( 0.00%) self.token_spacing = next_spacing; . . // Diagnostics. 55,691 ( 0.00%) self.expected_tokens.clear(); . } . . /// Advance the parser by one token. 445,488 ( 0.03%) pub fn bump(&mut self) { 222,744 ( 0.01%) let next_token = self.next_tok(self.token.span); 334,116 ( 0.02%) self.bump_with(next_token); 445,488 ( 0.03%) } . . /// Look-ahead `dist` tokens of `self.token` and get access to that token there. . /// When `dist == 0` then the current token is looked at. . pub fn look_ahead(&self, dist: usize, looker: impl FnOnce(&Token) -> R) -> R { 1,694 ( 0.00%) if dist == 0 { 709 ( 0.00%) return looker(&self.token); . } . 27,360 ( 0.00%) let frame = &self.token_cursor.frame; 27,803 ( 0.00%) if frame.delim != DelimToken::NoDelim { . let all_normal = (0..dist).all(|i| { 83,364 ( 0.00%) let token = frame.tree_cursor.look_ahead(i); 99,498 ( 0.01%) !matches!(token, Some(TokenTree::Delimited(_, DelimToken::NoDelim, _))) . }); . if all_normal { 137,752 ( 0.01%) return match frame.tree_cursor.look_ahead(dist - 1) { 42,241 ( 0.00%) Some(tree) => match tree { 20,764 ( 0.00%) TokenTree::Token(token) => looker(token), . TokenTree::Delimited(dspan, delim, _) => { 3,345 ( 0.00%) looker(&Token::new(token::OpenDelim(*delim), dspan.open)) . } . }, 45,187 ( 0.00%) None => looker(&Token::new(token::CloseDelim(frame.delim), frame.span.close)), . }; . } . } . . let mut cursor = self.token_cursor.clone(); . let mut i = 0; 303 ( 0.00%) let mut token = Token::dummy(); 722 ( 0.00%) while i < dist { 2,453 ( 0.00%) token = cursor.next().0; 1,019 ( 0.00%) if matches!( 614 ( 0.00%) token.kind, . token::OpenDelim(token::NoDelim) | token::CloseDelim(token::NoDelim) . ) { . continue; . } 380 ( 0.00%) i += 1; . } 6 ( 0.00%) return looker(&token); . } . . /// Returns whether any of the given keywords are `dist` tokens ahead of the current one. 7,362 ( 0.00%) fn is_keyword_ahead(&self, dist: usize, kws: &[Symbol]) -> bool { 1,846 ( 0.00%) self.look_ahead(dist, |t| kws.iter().any(|&kw| t.is_keyword(kw))) 7,362 ( 0.00%) } . . /// Parses asyncness: `async` or nothing. . fn parse_asyncness(&mut self) -> Async { . if self.eat_keyword(kw::Async) { . let span = self.prev_token.uninterpolated_span(); . Async::Yes { span, closure_id: DUMMY_NODE_ID, return_impl_trait_id: DUMMY_NODE_ID } . } else { . Async::No . } . } . . /// Parses unsafety: `unsafe` or nothing. 284 ( 0.00%) fn parse_unsafety(&mut self) -> Unsafe { . if self.eat_keyword(kw::Unsafe) { . Unsafe::Yes(self.prev_token.uninterpolated_span()) . } else { . Unsafe::No . } 1,136 ( 0.00%) } . . /// Parses constness: `const` or nothing. 3,144 ( 0.00%) fn parse_constness(&mut self) -> Const { . // Avoid const blocks to be parsed as const items 883 ( 0.00%) if self.look_ahead(1, |t| t != &token::OpenDelim(DelimToken::Brace)) . && self.eat_keyword(kw::Const) . { 40 ( 0.00%) Const::Yes(self.prev_token.uninterpolated_span()) . } else { . Const::No . } 5,502 ( 0.00%) } . . /// Parses inline const expressions. . fn parse_const_block(&mut self, span: Span, pat: bool) -> PResult<'a, P> { . if pat { . self.sess.gated_spans.gate(sym::inline_const_pat, span); . } else { . self.sess.gated_spans.gate(sym::inline_const, span); . } -- line 1104 ---------------------------------------- -- line 1110 ---------------------------------------- . }; . let blk_span = anon_const.value.span; . Ok(self.mk_expr(span.to(blk_span), ExprKind::ConstBlock(anon_const), AttrVec::new())) . } . . /// Parses mutability (`mut` or nothing). . fn parse_mutability(&mut self) -> Mutability { . if self.eat_keyword(kw::Mut) { Mutability::Mut } else { Mutability::Not } 198 ( 0.00%) } . . /// Possibly parses mutability (`const` or `mut`). . fn parse_const_or_mut(&mut self) -> Option { . if self.eat_keyword(kw::Mut) { . Some(Mutability::Mut) . } else if self.eat_keyword(kw::Const) { . Some(Mutability::Not) . } else { . None . } . } . . fn parse_field_name(&mut self) -> PResult<'a, Ident> { 60 ( 0.00%) if let token::Literal(token::Lit { kind: token::Integer, symbol, suffix }) = self.token.kind . { . self.expect_no_suffix(self.token.span, "a tuple index", suffix); . self.bump(); . Ok(Ident::new(symbol, self.prev_token.span)) . } else { 90 ( 0.00%) self.parse_ident_common(true) . } . } . . fn parse_mac_args(&mut self) -> PResult<'a, P> { 43 ( 0.00%) self.parse_mac_args_common(true).map(P) . } . . fn parse_attr_args(&mut self) -> PResult<'a, MacArgs> { 306 ( 0.00%) self.parse_mac_args_common(false) . } . 1,089 ( 0.00%) fn parse_mac_args_common(&mut self, delimited_only: bool) -> PResult<'a, MacArgs> { 968 ( 0.00%) Ok( 885 ( 0.00%) if self.check(&token::OpenDelim(DelimToken::Paren)) 210 ( 0.00%) || self.check(&token::OpenDelim(DelimToken::Bracket)) 210 ( 0.00%) || self.check(&token::OpenDelim(DelimToken::Brace)) . { 204 ( 0.00%) match self.parse_token_tree() { 255 ( 0.00%) TokenTree::Delimited(dspan, delim, tokens) => . // We've confirmed above that there is a delimiter so unwrapping is OK. . { 102 ( 0.00%) MacArgs::Delimited(dspan, MacDelimiter::from_token(delim).unwrap(), tokens) . } . _ => unreachable!(), . } 140 ( 0.00%) } else if !delimited_only { . if self.eat(&token::Eq) { . let eq_span = self.prev_token.span; . . // Collect tokens because they are used during lowering to HIR. . let expr = self.parse_expr_force_collect()?; . let span = expr.span; . . let token_kind = token::Interpolated(Lrc::new(token::NtExpr(expr))); -- line 1172 ---------------------------------------- -- line 1173 ---------------------------------------- . MacArgs::Eq(eq_span, Token::new(token_kind, span)) . } else { . MacArgs::Empty . } . } else { . return self.unexpected(); . }, . ) 847 ( 0.00%) } . . fn parse_or_use_outer_attributes( . &mut self, . already_parsed_attrs: Option, . ) -> PResult<'a, AttrWrapper> { 70,499 ( 0.00%) if let Some(attrs) = already_parsed_attrs { . Ok(attrs) . } else { 46,290 ( 0.00%) self.parse_outer_attributes() . } . } . . /// Parses a single token tree from the input. 856 ( 0.00%) pub(crate) fn parse_token_tree(&mut self) -> TokenTree { 377 ( 0.00%) match self.token.kind { . token::OpenDelim(..) => { . let depth = self.token_cursor.stack.len(); . . // We keep advancing the token cursor until we hit . // the matching `CloseDelim` token. 2,422 ( 0.00%) while !(depth == self.token_cursor.stack.len() . && matches!(self.token.kind, token::CloseDelim(_))) . { . // Advance one token at a time, so `TokenCursor::next()` . // can capture these tokens if necessary. 1,404 ( 0.00%) self.bump(); . } . // We are still inside the frame corresponding . // to the delimited stream we captured, so grab . // the tokens from this frame. . let frame = &self.token_cursor.frame; 186 ( 0.00%) let stream = frame.tree_cursor.stream.clone(); 186 ( 0.00%) let span = frame.span; 93 ( 0.00%) let delim = frame.delim; . // Consume close delimiter 186 ( 0.00%) self.bump(); 465 ( 0.00%) TokenTree::Delimited(span, delim, stream) . } . token::CloseDelim(_) | token::Eof => unreachable!(), . _ => { 28 ( 0.00%) self.bump(); 70 ( 0.00%) TokenTree::Token(self.prev_token.clone()) . } . } 749 ( 0.00%) } . . /// Parses a stream of tokens into a list of `TokenTree`s, up to EOF. . pub fn parse_all_token_trees(&mut self) -> PResult<'a, Vec> { . let mut tts = Vec::new(); . while self.token != token::Eof { . tts.push(self.parse_token_tree()); . } . Ok(tts) -- line 1234 ---------------------------------------- -- line 1244 ---------------------------------------- . } . TokenStream::new(result) . } . . /// Evaluates the closure with restrictions in place. . /// . /// Afters the closure is evaluated, restrictions are reset. . fn with_res(&mut self, res: Restrictions, f: impl FnOnce(&mut Self) -> T) -> T { 23,769 ( 0.00%) let old = self.restrictions; 24,559 ( 0.00%) self.restrictions = res; . let res = f(self); 24,325 ( 0.00%) self.restrictions = old; . res . } . 6,592 ( 0.00%) fn is_crate_vis(&self) -> bool { 4,120 ( 0.00%) self.token.is_keyword(kw::Crate) && self.look_ahead(1, |t| t != &token::ModSep) 7,416 ( 0.00%) } . . /// Parses `pub`, `pub(crate)` and `pub(in path)` plus shortcuts `crate` for `pub(crate)`, . /// `pub(self)` for `pub(in self)` and `pub(super)` for `pub(in super)`. . /// If the following element can't be a tuple (i.e., it's a function definition), then . /// it's not a tuple struct field), and the contents within the parentheses aren't valid, . /// so emit a proper diagnostic. . // Public for rustfmt usage. 5,490 ( 0.00%) pub fn parse_visibility(&mut self, fbt: FollowedByType) -> PResult<'a, Visibility> { 1,098 ( 0.00%) maybe_whole!(self, NtVis, |x| x); . 549 ( 0.00%) self.expected_tokens.push(TokenType::Keyword(kw::Crate)); 2,196 ( 0.00%) if self.is_crate_vis() { . self.bump(); // `crate` . self.sess.gated_spans.gate(sym::crate_visibility_modifier, self.prev_token.span); . return Ok(Visibility { . span: self.prev_token.span, . kind: VisibilityKind::Crate(CrateSugar::JustCrate), . tokens: None, . }); . } . . if !self.eat_keyword(kw::Pub) { . // We need a span for our `Spanned`, but there's inherently no . // keyword to grab a span from for inherited visibility; an empty span at the . // beginning of the current token would seem to be the "Schelling span". 486 ( 0.00%) return Ok(Visibility { 1,458 ( 0.00%) span: self.token.span.shrink_to_lo(), . kind: VisibilityKind::Inherited, . tokens: None, . }); . } 63 ( 0.00%) let lo = self.prev_token.span; . 315 ( 0.00%) if self.check(&token::OpenDelim(token::Paren)) { . // We don't `self.bump()` the `(` yet because this might be a struct definition where . // `()` or a tuple might be allowed. For example, `struct Struct(pub (), pub (usize));`. . // Because of this, we only `bump` the `(` if we're assured it is appropriate to do so . // by the following tokens. . if self.is_keyword_ahead(1, &[kw::Crate]) && self.look_ahead(2, |t| t != &token::ModSep) . // account for `pub(crate::foo)` . { . // Parse `pub(crate)`. -- line 1303 ---------------------------------------- -- line 1338 ---------------------------------------- . } else if let FollowedByType::No = fbt { . // Provide this diagnostic if a type cannot follow; . // in particular, if this is not a tuple struct. . self.recover_incorrect_vis_restriction()?; . // Emit diagnostic, but continue with public visibility. . } . } . 189 ( 0.00%) Ok(Visibility { span: lo, kind: VisibilityKind::Public, tokens: None }) 4,941 ( 0.00%) } . . /// Recovery for e.g. `pub(something) fn ...` or `struct X { pub(something) y: Z }` . fn recover_incorrect_vis_restriction(&mut self) -> PResult<'a, ()> { . self.bump(); // `(` . let path = self.parse_path(PathStyle::Mod)?; . self.expect(&token::CloseDelim(token::Paren))?; // `)` . . let msg = "incorrect visibility restriction"; -- line 1355 ---------------------------------------- -- line 1370 ---------------------------------------- . ) . .emit(); . . Ok(()) . } . . /// Parses `extern string_literal?`. . fn parse_extern(&mut self) -> Extern { 104 ( 0.00%) if self.eat_keyword(kw::Extern) { Extern::from_abi(self.parse_abi()) } else { Extern::None } . } . . /// Parses a string literal as an ABI spec. . fn parse_abi(&mut self) -> Option { . match self.parse_str_lit() { . Ok(str_lit) => Some(str_lit), . Err(Some(lit)) => match lit.kind { . ast::LitKind::Err(_) => None, -- line 1386 ---------------------------------------- -- line 1395 ---------------------------------------- . .emit(); . None . } . }, . Err(None) => None, . } . } . 60 ( 0.00%) pub fn collect_tokens_no_attrs( . &mut self, . f: impl FnOnce(&mut Self) -> PResult<'a, R>, . ) -> PResult<'a, R> { . // The only reason to call `collect_tokens_no_attrs` is if you want tokens, so use . // `ForceCollect::Yes` . self.collect_tokens_trailing_token( . AttrWrapper::empty(), . ForceCollect::Yes, 6 ( 0.00%) |this, _attrs| Ok((f(this)?, TrailingToken::None)), . ) 60 ( 0.00%) } . . /// `::{` or `::*` 59,208 ( 0.00%) fn is_import_coupler(&mut self) -> bool { 29,604 ( 0.00%) self.check(&token::ModSep) . && self.look_ahead(1, |t| { 6,129 ( 0.00%) *t == token::OpenDelim(token::Brace) || *t == token::BinOp(token::Star) . }) 63,288 ( 0.00%) } . . pub fn clear_expected_tokens(&mut self) { . self.expected_tokens.clear(); . } . } . . crate fn make_unclosed_delims_error( . unmatched: UnmatchedBrace, -- line 1430 ---------------------------------------- -- line 1450 ---------------------------------------- . err.span_label(sp, "closing delimiter possibly meant for this"); . } . if let Some(sp) = unmatched.unclosed_span { . err.span_label(sp, "unclosed delimiter"); . } . Some(err) . } . 1,280 ( 0.00%) pub fn emit_unclosed_delims(unclosed_delims: &mut Vec, sess: &ParseSess) { 640 ( 0.00%) *sess.reached_eof.borrow_mut() |= . unclosed_delims.iter().any(|unmatched_delim| unmatched_delim.found_delim.is_none()); 640 ( 0.00%) for unmatched in unclosed_delims.drain(..) { . if let Some(mut e) = make_unclosed_delims_error(unmatched, sess) { . e.emit(); . } . } 1,280 ( 0.00%) } . . /// A helper struct used when building an `AttrAnnotatedTokenStream` from . /// a `LazyTokenStream`. Both delimiter and non-delimited tokens . /// are stored as `FlatToken::Token`. A vector of `FlatToken`s . /// is then 'parsed' to build up an `AttrAnnotatedTokenStream` with nested . /// `AttrAnnotatedTokenTree::Delimited` tokens . #[derive(Debug, Clone)] . pub enum FlatToken { -- line 1474 ---------------------------------------- 381,281 ( 0.02%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/option.rs -------------------------------------------------------------------------------- Ir -- line 504 ---------------------------------------- . use crate::panicking::{panic, panic_str}; . use crate::pin::Pin; . use crate::{ . convert, hint, mem, . ops::{self, ControlFlow, Deref, DerefMut}, . }; . . /// The `Option` type. See [the module level documentation](self) for more. 1,732,288 ( 0.10%) #[derive(Copy, PartialEq, PartialOrd, Eq, Ord, Debug, Hash)] . #[rustc_diagnostic_item = "Option"] . #[stable(feature = "rust1", since = "1.0.0")] . pub enum Option { . /// No value. . #[lang = "None"] . #[stable(feature = "rust1", since = "1.0.0")] . None, . /// Some value of type `T`. . #[lang = "Some"] . #[stable(feature = "rust1", since = "1.0.0")] 787 ( 0.00%) Some(#[stable(feature = "rust1", since = "1.0.0")] T), . } . . ///////////////////////////////////////////////////////////////////////////// . // Type implementation . ///////////////////////////////////////////////////////////////////////////// . . impl Option { . ///////////////////////////////////////////////////////////////////////// -- line 531 ---------------------------------------- -- line 543 ---------------------------------------- . /// let x: Option = None; . /// assert_eq!(x.is_some(), false); . /// ``` . #[must_use = "if you intended to assert that this has a value, consider `.unwrap()` instead"] . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_option", since = "1.48.0")] . pub const fn is_some(&self) -> bool { 2,024,759 ( 0.12%) matches!(*self, Some(_)) . } . . /// Returns `true` if the option is a [`Some`] wrapping a value matching the predicate. . /// . /// # Examples . /// . /// ``` . /// #![feature(is_some_with)] -- line 559 ---------------------------------------- -- line 616 ---------------------------------------- . /// // then consume *that* with `map`, leaving `text` on the stack. . /// let text_length: Option = text.as_ref().map(|s| s.len()); . /// println!("still can print text: {:?}", text); . /// ``` . #[inline] . #[rustc_const_stable(feature = "const_option", since = "1.48.0")] . #[stable(feature = "rust1", since = "1.0.0")] . pub const fn as_ref(&self) -> Option<&T> { 2,573,310 ( 0.15%) match *self { . Some(ref x) => Some(x), . None => None, . } . } . . /// Converts from `&mut Option` to `Option<&mut T>`. . /// . /// # Examples -- line 632 ---------------------------------------- -- line 638 ---------------------------------------- . /// None => {}, . /// } . /// assert_eq!(x, Some(42)); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option", issue = "67441")] . pub const fn as_mut(&mut self) -> Option<&mut T> { 755,880 ( 0.04%) match *self { . Some(ref mut x) => Some(x), . None => None, . } . } . . /// Converts from [Pin]<[&]Option\> to Option<[Pin]<[&]T>>. . /// . /// [&]: reference "shared reference" -- line 654 ---------------------------------------- -- line 705 ---------------------------------------- . /// let x: Option<&str> = None; . /// x.expect("fruits are healthy"); // panics with `fruits are healthy` . /// ``` . #[inline] . #[track_caller] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option", issue = "67441")] . pub const fn expect(self, msg: &str) -> T { 723,893 ( 0.04%) match self { 122,658 ( 0.01%) Some(val) => val, . None => expect_failed(msg), . } . } . . /// Returns the contained [`Some`] value, consuming the `self` value. . /// . /// Because this function may panic, its use is generally discouraged. . /// Instead, prefer to use pattern matching and handle the [`None`] -- line 722 ---------------------------------------- -- line 742 ---------------------------------------- . /// let x: Option<&str> = None; . /// assert_eq!(x.unwrap(), "air"); // fails . /// ``` . #[inline] . #[track_caller] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option", issue = "67441")] . pub const fn unwrap(self) -> T { 1,979,093 ( 0.12%) match self { 1,904,494 ( 0.11%) Some(val) => val, . None => panic("called `Option::unwrap()` on a `None` value"), . } . } . . /// Returns the contained [`Some`] value or a provided default. . /// . /// Arguments passed to `unwrap_or` are eagerly evaluated; if you are passing . /// the result of a function call, it is recommended to use [`unwrap_or_else`], -- line 759 ---------------------------------------- -- line 769 ---------------------------------------- . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn unwrap_or(self, default: T) -> T . where . T: ~const Drop, . { 1,381,972 ( 0.08%) match self { . Some(x) => x, 1,200 ( 0.00%) None => default, . } 431 ( 0.00%) } . . /// Returns the contained [`Some`] value or computes it from a closure. . /// . /// # Examples . /// . /// ``` . /// let k = 10; . /// assert_eq!(Some(4).unwrap_or_else(|| 2 * k), 4); . /// assert_eq!(None.unwrap_or_else(|| 2 * k), 20); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 54 ( 0.00%) pub const fn unwrap_or_else(self, f: F) -> T . where . F: ~const FnOnce() -> T, . F: ~const Drop, . { 1,490,765 ( 0.09%) match self { 119,105 ( 0.01%) Some(x) => x, 35,242 ( 0.00%) None => f(), . } 111 ( 0.00%) } . . /// Returns the contained [`Some`] value or a default. . /// . /// Consumes the `self` argument then, if [`Some`], returns the contained . /// value, otherwise if [`None`], returns the [default value] for that . /// type. . /// . /// # Examples -- line 812 ---------------------------------------- -- line 831 ---------------------------------------- . /// [`FromStr`]: crate::str::FromStr . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn unwrap_or_default(self) -> T . where . T: ~const Default, . { 2,023 ( 0.00%) match self { 2,008 ( 0.00%) Some(x) => x, . None => Default::default(), . } . } . . /// Returns the contained [`Some`] value, consuming the `self` value, . /// without checking that the value is not [`None`]. . /// . /// # Safety -- line 848 ---------------------------------------- -- line 892 ---------------------------------------- . /// // `Option::map` takes self *by value*, consuming `maybe_some_string` . /// let maybe_some_len = maybe_some_string.map(|s| s.len()); . /// . /// assert_eq!(maybe_some_len, Some(13)); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 805 ( 0.00%) pub const fn map(self, f: F) -> Option . where . F: ~const FnOnce(T) -> U, . F: ~const Drop, . { 1,364,912 ( 0.08%) match self { 1,469,551 ( 0.09%) Some(x) => Some(f(x)), 36,168 ( 0.00%) None => None, . } 52,676 ( 0.00%) } . . /// Calls the provided closure with a reference to the contained value (if [`Some`]). . /// . /// # Examples . /// . /// ``` . /// #![feature(result_option_inspect)] . /// -- line 917 ---------------------------------------- -- line 960 ---------------------------------------- . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn map_or(self, default: U, f: F) -> U . where . F: ~const FnOnce(T) -> U, . F: ~const Drop, . U: ~const Drop, . { 641,743 ( 0.04%) match self { 18,574 ( 0.00%) Some(t) => f(t), 1,580 ( 0.00%) None => default, . } . } . . /// Computes a default function result (if none), or . /// applies a different function to the contained value (if any). . /// . /// # Examples . /// -- line 978 ---------------------------------------- -- line 990 ---------------------------------------- . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn map_or_else(self, default: D, f: F) -> U . where . D: ~const FnOnce() -> U, . D: ~const Drop, . F: ~const FnOnce(T) -> U, . F: ~const Drop, . { 4,183 ( 0.00%) match self { 292 ( 0.00%) Some(t) => f(t), . None => default(), . } . } . . /// Transforms the `Option` into a [`Result`], mapping [`Some(v)`] to . /// [`Ok(v)`] and [`None`] to [`Err(err)`]. . /// . /// Arguments passed to `ok_or` are eagerly evaluated; if you are passing the -- line 1007 ---------------------------------------- -- line 1024 ---------------------------------------- . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn ok_or(self, err: E) -> Result . where . E: ~const Drop, . { 237,589 ( 0.01%) match self { 916 ( 0.00%) Some(v) => Ok(v), 456 ( 0.00%) None => Err(err), . } . } . . /// Transforms the `Option` into a [`Result`], mapping [`Some(v)`] to . /// [`Ok(v)`] and [`None`] to [`Err(err())`]. . /// . /// [`Ok(v)`]: Ok . /// [`Err(err())`]: Err -- line 1042 ---------------------------------------- -- line 1049 ---------------------------------------- . /// assert_eq!(x.ok_or_else(|| 0), Ok("foo")); . /// . /// let x: Option<&str> = None; . /// assert_eq!(x.ok_or_else(|| 0), Err(0)); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 58,028 ( 0.00%) pub const fn ok_or_else(self, err: F) -> Result . where . F: ~const FnOnce() -> E, . F: ~const Drop, . { 90,336 ( 0.01%) match self { 139,835 ( 0.01%) Some(v) => Ok(v), 37,252 ( 0.00%) None => Err(err()), . } 72,535 ( 0.00%) } . . /// Converts from `Option` (or `&Option`) to `Option<&T::Target>`. . /// . /// Leaves the original Option in-place, creating a new one with a reference . /// to the original one, additionally coercing the contents via [`Deref`]. . /// . /// # Examples . /// -- line 1074 ---------------------------------------- -- line 1080 ---------------------------------------- . /// assert_eq!(x.as_deref(), None); . /// ``` . #[stable(feature = "option_deref", since = "1.40.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn as_deref(&self) -> Option<&T::Target> . where . T: ~const Deref, . { 5,249 ( 0.00%) match self.as_ref() { . Some(t) => Some(t.deref()), . None => None, . } . } . . /// Converts from `Option` (or `&mut Option`) to `Option<&mut T::Target>`. . /// . /// Leaves the original `Option` in-place, creating a new one containing a mutable reference to -- line 1096 ---------------------------------------- -- line 1213 ---------------------------------------- . /// assert_eq!(Some(2).and_then(sq).and_then(sq), Some(16)); . /// assert_eq!(Some(2).and_then(sq).and_then(nope), None); . /// assert_eq!(Some(2).and_then(nope).and_then(sq), None); . /// assert_eq!(None.and_then(sq).and_then(sq), None); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 455 ( 0.00%) pub const fn and_then(self, f: F) -> Option . where . F: ~const FnOnce(T) -> Option, . F: ~const Drop, . { 151,597 ( 0.01%) match self { 5,594 ( 0.00%) Some(x) => f(x), . None => None, . } 8,782 ( 0.00%) } . . /// Returns [`None`] if the option is [`None`], otherwise calls `predicate` . /// with the wrapped value and returns: . /// . /// - [`Some(t)`] if `predicate` returns `true` (where `t` is the wrapped . /// value), and . /// - [`None`] if `predicate` returns `false`. . /// -- line 1238 ---------------------------------------- -- line 1257 ---------------------------------------- . #[stable(feature = "option_filter", since = "1.27.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn filter

(self, predicate: P) -> Self . where . T: ~const Drop, . P: ~const FnOnce(&T) -> bool, . P: ~const Drop, . { 1,538 ( 0.00%) if let Some(x) = self { 1,021 ( 0.00%) if predicate(&x) { . return Some(x); . } . } . None . } . . /// Returns the option if it contains a value, otherwise returns `optb`. . /// -- line 1274 ---------------------------------------- -- line 1299 ---------------------------------------- . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn or(self, optb: Option) -> Option . where . T: ~const Drop, . { 8,326 ( 0.00%) match self { 210 ( 0.00%) Some(x) => Some(x), . None => optb, . } . } . . /// Returns the option if it contains a value, otherwise calls `f` and . /// returns the result. . /// . /// # Examples -- line 1316 ---------------------------------------- -- line 1326 ---------------------------------------- . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn or_else(self, f: F) -> Option . where . F: ~const FnOnce() -> Option, . F: ~const Drop, . { 176,563 ( 0.01%) match self { 5,183 ( 0.00%) Some(x) => Some(x), . None => f(), . } . } . . /// Returns [`Some`] if exactly one of `self`, `optb` is [`Some`], otherwise returns [`None`]. . /// . /// # Examples . /// -- line 1343 ---------------------------------------- -- line 1431 ---------------------------------------- . /// ``` . #[inline] . #[stable(feature = "option_entry", since = "1.20.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn get_or_insert(&mut self, value: T) -> &mut T . where . T: ~const Drop, . { 18,543 ( 0.00%) if let None = *self { 43,097 ( 0.00%) *self = Some(value); . } . . // SAFETY: a `None` variant for `self` would have been replaced by a `Some` . // variant in the code above. . unsafe { self.as_mut().unwrap_unchecked() } . } . . /// Inserts the default value into the option if it is [`None`], then -- line 1448 ---------------------------------------- -- line 1499 ---------------------------------------- . #[inline] . #[stable(feature = "option_entry", since = "1.20.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn get_or_insert_with(&mut self, f: F) -> &mut T . where . F: ~const FnOnce() -> T, . F: ~const Drop, . { 229,324 ( 0.01%) if let None = *self { . // the compiler isn't smart enough to know that we are not dropping a `T` . // here and wants us to ensure `T` can be dropped at compile time. . mem::forget(mem::replace(self, Some(f()))) . } . . // SAFETY: a `None` variant for `self` would have been replaced by a `Some` . // variant in the code above. . unsafe { self.as_mut().unwrap_unchecked() } -- line 1515 ---------------------------------------- -- line 1558 ---------------------------------------- . /// let old = x.replace(3); . /// assert_eq!(x, Some(3)); . /// assert_eq!(old, None); . /// ``` . #[inline] . #[rustc_const_unstable(feature = "const_option", issue = "67441")] . #[stable(feature = "option_replace", since = "1.31.0")] . pub const fn replace(&mut self, value: T) -> Option { 908 ( 0.00%) mem::replace(self, Some(value)) . } . . /// Returns `true` if the option is a [`Some`] value containing the given value. . /// . /// # Examples . /// . /// ``` . /// #![feature(option_result_contains)] -- line 1574 ---------------------------------------- -- line 1712 ---------------------------------------- . #[stable(feature = "copied", since = "1.35.0")] . #[rustc_const_unstable(feature = "const_option", issue = "67441")] . pub const fn copied(self) -> Option . where . T: Copy, . { . // FIXME: this implementation, which sidesteps using `Option::map` since it's not const . // ready yet, should be reverted when possible to avoid code repetition 23,185 ( 0.00%) match self { 352,760 ( 0.02%) Some(&v) => Some(v), 847 ( 0.00%) None => None, . } 9 ( 0.00%) } . . /// Maps an `Option<&T>` to an `Option` by cloning the contents of the . /// option. . /// . /// # Examples . /// . /// ``` . /// let x = 12; -- line 1732 ---------------------------------------- -- line 1733 ---------------------------------------- . /// let opt_x = Some(&x); . /// assert_eq!(opt_x, Some(&12)); . /// let cloned = opt_x.cloned(); . /// assert_eq!(cloned, Some(12)); . /// ``` . #[must_use = "`self` will be dropped if the result is not used"] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_cloned", issue = "91582")] 9,680 ( 0.00%) pub const fn cloned(self) -> Option . where . T: ~const Clone, . { 163,257 ( 0.01%) match self { 617,310 ( 0.04%) Some(t) => Some(t.clone()), 9,073 ( 0.00%) None => None, . } 18,177 ( 0.00%) } . } . . impl Option<&mut T> { . /// Maps an `Option<&mut T>` to an `Option` by copying the contents of the . /// option. . /// . /// # Examples . /// -- line 1757 ---------------------------------------- -- line 1843 ---------------------------------------- . ///////////////////////////////////////////////////////////////////////////// . // Trait implementations . ///////////////////////////////////////////////////////////////////////////// . . #[stable(feature = "rust1", since = "1.0.0")] . impl Clone for Option { . #[inline] . fn clone(&self) -> Self { 1,315,288 ( 0.08%) match self { 13,397 ( 0.00%) Some(x) => Some(x.clone()), 960 ( 0.00%) None => None, . } 319,095 ( 0.02%) } . . #[inline] . fn clone_from(&mut self, source: &Self) { . match (self, source) { . (Some(to), Some(from)) => to.clone_from(from), . (to, from) => *to = from.clone(), . } . } -- line 1863 ---------------------------------------- -- line 2006 ---------------------------------------- . . #[inline] . fn next(&mut self) -> Option { . self.opt.take() . } . . #[inline] . fn size_hint(&self) -> (usize, Option) { 115,635 ( 0.01%) match self.opt { . Some(_) => (1, Some(1)), . None => (0, Some(0)), . } . } . } . . impl DoubleEndedIterator for Item { . #[inline] -- line 2022 ---------------------------------------- -- line 2136 ---------------------------------------- . type Item = A; . . #[inline] . fn next(&mut self) -> Option { . self.inner.next() . } . #[inline] . fn size_hint(&self) -> (usize, Option) { 22 ( 0.00%) self.inner.size_hint() . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl DoubleEndedIterator for IntoIter { . #[inline] . fn next_back(&mut self) -> Option { . self.inner.next_back() -- line 2152 ---------------------------------------- -- line 2241 ---------------------------------------- . #[rustc_const_unstable(feature = "const_convert", issue = "88674")] . impl const ops::Try for Option { . type Output = T; . type Residual = Option; . . #[inline] . fn from_output(output: Self::Output) -> Self { . Some(output) 1,135 ( 0.00%) } . . #[inline] . fn branch(self) -> ControlFlow { 620,705 ( 0.04%) match self { 57,465 ( 0.00%) Some(v) => ControlFlow::Continue(v), . None => ControlFlow::Break(None), . } . } . } . . #[unstable(feature = "try_trait_v2", issue = "84277")] . #[rustc_const_unstable(feature = "const_convert", issue = "88674")] . impl const ops::FromResidual for Option { . #[inline] . fn from_residual(residual: Option) -> Self { . match residual { 65,003 ( 0.00%) None => None, . } . } . } . . #[unstable(feature = "try_trait_v2_residual", issue = "91285")] . impl ops::Residual for Option { . type TryType = Option; . } -- line 2274 ---------------------------------------- -- line 2297 ---------------------------------------- . /// let x: Option>> = Some(Some(Some(6))); . /// assert_eq!(Some(Some(6)), x.flatten()); . /// assert_eq!(Some(6), x.flatten().flatten()); . /// ``` . #[inline] . #[stable(feature = "option_flattening", since = "1.40.0")] . #[rustc_const_unstable(feature = "const_option", issue = "67441")] . pub const fn flatten(self) -> Option { 2 ( 0.00%) match self { 11 ( 0.00%) Some(inner) => inner, . None => None, . } . } . } 3,420,218 ( 0.20%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_const_eval/src/interpret/memory.rs -------------------------------------------------------------------------------- Ir -- line 20 ---------------------------------------- . use rustc_target::abi::{Align, HasDataLayout, Size, TargetDataLayout}; . . use super::{ . alloc_range, AllocId, AllocMap, AllocRange, Allocation, CheckInAllocMsg, GlobalAlloc, . InterpResult, Machine, MayLeak, Pointer, PointerArithmetic, Provenance, Scalar, . ScalarMaybeUninit, . }; . 5 ( 0.00%) #[derive(Debug, PartialEq, Copy, Clone)] . pub enum MemoryKind { . /// Stack memory. Error if deallocated except during a stack pop. . Stack, . /// Memory allocated by `caller_location` intrinsic. Error if ever deallocated. . CallerLocation, . /// Additional memory kinds a machine wishes to distinguish from the builtin ones. . Machine(T), . } -- line 36 ---------------------------------------- -- line 114 ---------------------------------------- . . /// Lets us implement `HasDataLayout`, which is awfully convenient. . pub tcx: TyCtxt<'tcx>, . } . . impl<'mir, 'tcx, M: Machine<'mir, 'tcx>> HasDataLayout for Memory<'mir, 'tcx, M> { . #[inline] . fn data_layout(&self) -> &TargetDataLayout { 4,872 ( 0.00%) &self.tcx.data_layout . } . } . . /// A reference to some allocation that was already bounds-checked for the given region . /// and had the on-access machine hooks run. . #[derive(Copy, Clone)] . pub struct AllocRef<'a, 'tcx, Tag, Extra> { . alloc: &'a Allocation, -- line 130 ---------------------------------------- -- line 138 ---------------------------------------- . alloc: &'a mut Allocation, . range: AllocRange, . tcx: TyCtxt<'tcx>, . alloc_id: AllocId, . } . . impl<'mir, 'tcx, M: Machine<'mir, 'tcx>> Memory<'mir, 'tcx, M> { . pub fn new(tcx: TyCtxt<'tcx>, extra: M::MemoryExtra) -> Self { 182 ( 0.00%) Memory { . alloc_map: M::MemoryMap::default(), . extra_fn_ptr_map: FxHashMap::default(), . dead_alloc_map: FxHashMap::default(), . extra, . tcx, . } . } . -- line 154 ---------------------------------------- -- line 157 ---------------------------------------- . /// for any other pointers, nor for TLS statics. . /// . /// Using the resulting pointer represents a *direct* access to that memory . /// (e.g. by directly using a `static`), . /// as opposed to access through a pointer that was created by the program. . /// . /// This function can fail only if `ptr` points to an `extern static`. . #[inline] 240 ( 0.00%) pub fn global_base_pointer( . &self, . ptr: Pointer, . ) -> InterpResult<'tcx, Pointer> { . // We know `offset` is relative to the allocation, so we can use `into_parts`. . let (alloc_id, offset) = ptr.into_parts(); . // We need to handle `extern static`. 80 ( 0.00%) match self.tcx.get_global_alloc(alloc_id) { . Some(GlobalAlloc::Static(def_id)) if self.tcx.is_thread_local_static(def_id) => { . bug!("global memory cannot point to thread-local static") . } . Some(GlobalAlloc::Static(def_id)) if self.tcx.is_foreign_item(def_id) => { . return M::extern_static_base_pointer(self, def_id); . } . _ => {} . } . // And we need to get the tag. 60 ( 0.00%) Ok(M::tag_alloc_base_pointer(self, Pointer::new(alloc_id, offset))) 160 ( 0.00%) } . . pub fn create_fn_alloc( . &mut self, . fn_val: FnVal<'tcx, M::ExtraFnVal>, . ) -> Pointer { . let id = match fn_val { . FnVal::Instance(instance) => self.tcx.create_fn_alloc(instance), . FnVal::Other(extra) => { -- line 191 ---------------------------------------- -- line 196 ---------------------------------------- . id . } . }; . // Functions are global allocations, so make sure we get the right base pointer. . // We know this is not an `extern static` so this cannot fail. . self.global_base_pointer(Pointer::from(id)).unwrap() . } . 94,689 ( 0.01%) pub fn allocate( . &mut self, . size: Size, . align: Align, . kind: MemoryKind, . ) -> InterpResult<'static, Pointer> { 42,084 ( 0.00%) let alloc = Allocation::uninit(size, align, M::PANIC_ON_ALLOC_FAIL)?; 94,689 ( 0.01%) Ok(self.allocate_with(alloc, kind)) 73,647 ( 0.00%) } . . pub fn allocate_bytes( . &mut self, . bytes: &[u8], . align: Align, . kind: MemoryKind, . mutability: Mutability, . ) -> Pointer { -- line 220 ---------------------------------------- -- line 222 ---------------------------------------- . self.allocate_with(alloc, kind) . } . . pub fn allocate_with( . &mut self, . alloc: Allocation, . kind: MemoryKind, . ) -> Pointer { 21,042 ( 0.00%) let id = self.tcx.reserve_alloc_id(); . debug_assert_ne!( . Some(kind), . M::GLOBAL_KIND.map(MemoryKind::Machine), . "dynamically allocating global memory" . ); . let alloc = M::init_allocation_extra(self, id, Cow::Owned(alloc), Some(kind)); 252,504 ( 0.01%) self.alloc_map.insert(id, (kind, alloc.into_owned())); . M::tag_alloc_base_pointer(self, Pointer::from(id)) . } . . pub fn reallocate( . &mut self, . ptr: Pointer>, . old_size_and_align: Option<(Size, Align)>, . new_size: Size, -- line 245 ---------------------------------------- -- line 270 ---------------------------------------- . old_size.min(new_size), . /*nonoverlapping*/ true, . )?; . self.deallocate(ptr.into(), old_size_and_align, kind)?; . . Ok(new_ptr) . } . 40 ( 0.00%) pub fn deallocate( . &mut self, . ptr: Pointer>, . old_size_and_align: Option<(Size, Align)>, . kind: MemoryKind, . ) -> InterpResult<'tcx> { 15 ( 0.00%) let (alloc_id, offset, ptr) = self.ptr_get_alloc(ptr)?; . trace!("deallocating: {}", alloc_id); . 10 ( 0.00%) if offset.bytes() != 0 { . throw_ub_format!( . "deallocating {:?} which does not point to the beginning of an object", . ptr . ); . } . 80 ( 0.00%) let (alloc_kind, mut alloc) = match self.alloc_map.remove(&alloc_id) { . Some(alloc) => alloc, . None => { . // Deallocating global memory -- always an error . return Err(match self.tcx.get_global_alloc(alloc_id) { . Some(GlobalAlloc::Function(..)) => { . err_ub_format!("deallocating {}, which is a function", alloc_id) . } . Some(GlobalAlloc::Static(..) | GlobalAlloc::Memory(..)) => { -- line 302 ---------------------------------------- -- line 303 ---------------------------------------- . err_ub_format!("deallocating {}, which is static memory", alloc_id) . } . None => err_ub!(PointerUseAfterFree(alloc_id)), . } . .into()); . } . }; . 5 ( 0.00%) if alloc.mutability == Mutability::Not { . throw_ub_format!("deallocating immutable allocation {}", alloc_id); . } 5 ( 0.00%) if alloc_kind != kind { . throw_ub_format!( . "deallocating {}, which is {} memory, using {} deallocation operation", . alloc_id, . alloc_kind, . kind . ); . } 10 ( 0.00%) if let Some((size, align)) = old_size_and_align { . if size != alloc.size() || align != alloc.align { . throw_ub_format!( . "incorrect layout on deallocation: {} has size {} and alignment {}, but gave size {} and alignment {}", . alloc_id, . alloc.size().bytes(), . alloc.align.bytes(), . size.bytes(), . align.bytes(), -- line 330 ---------------------------------------- -- line 337 ---------------------------------------- . M::memory_deallocated( . &mut self.extra, . &mut alloc.extra, . ptr.provenance, . alloc_range(Size::ZERO, size), . )?; . . // Don't forget to remember size and align of this now-dead allocation 10 ( 0.00%) let old = self.dead_alloc_map.insert(alloc_id, (size, alloc.align)); 5 ( 0.00%) if old.is_some() { . bug!("Nothing can be deallocated twice"); . } . . Ok(()) 55 ( 0.00%) } . . /// Internal helper function to determine the allocation and offset of a pointer (if any). . #[inline(always)] . fn get_ptr_access( . &self, . ptr: Pointer>, . size: Size, . align: Align, -- line 359 ---------------------------------------- -- line 361 ---------------------------------------- . let align = M::enforce_alignment(&self.extra).then_some(align); . self.check_and_deref_ptr( . ptr, . size, . align, . CheckInAllocMsg::MemoryAccessTest, . |alloc_id, offset, ptr| { . let (size, align) = 126,044 ( 0.01%) self.get_size_and_align(alloc_id, AllocCheck::Dereferenceable)?; . Ok((size, align, (alloc_id, offset, ptr))) . }, . ) . } . . /// Check if the given pointer points to live memory of given `size` and `align` . /// (ignoring `M::enforce_alignment`). The caller can control the error message for the . /// out-of-bounds case. -- line 377 ---------------------------------------- -- line 378 ---------------------------------------- . #[inline(always)] . pub fn check_ptr_access_align( . &self, . ptr: Pointer>, . size: Size, . align: Align, . msg: CheckInAllocMsg, . ) -> InterpResult<'tcx> { 204 ( 0.00%) self.check_and_deref_ptr(ptr, size, Some(align), msg, |alloc_id, _, _| { 96 ( 0.00%) let check = match msg { . CheckInAllocMsg::DerefTest | CheckInAllocMsg::MemoryAccessTest => { . AllocCheck::Dereferenceable . } . CheckInAllocMsg::PointerArithmeticTest | CheckInAllocMsg::InboundsTest => { . AllocCheck::Live . } . }; 48 ( 0.00%) let (size, align) = self.get_size_and_align(alloc_id, check)?; . Ok((size, align, ())) . })?; . Ok(()) . } . . /// Low-level helper function to check if a ptr is in-bounds and potentially return a reference . /// to the allocation it points to. Supports both shared and mutable references, as the actual . /// checking is offloaded to a helper closure. `align` defines whether and which alignment check . /// is done. Returns `None` for size 0, and otherwise `Some` of what `alloc_size` returned. 336 ( 0.00%) fn check_and_deref_ptr( . &self, . ptr: Pointer>, . size: Size, . align: Option, . msg: CheckInAllocMsg, . alloc_size: impl FnOnce( . AllocId, . Size, . Pointer, . ) -> InterpResult<'tcx, (Size, Align, T)>, . ) -> InterpResult<'tcx, Option> { 48 ( 0.00%) fn check_offset_align(offset: u64, align: Align) -> InterpResult<'static> { 120 ( 0.00%) if offset % align.bytes() == 0 { . Ok(()) . } else { . // The biggest power of two through which `offset` is divisible. . let offset_pow2 = 1 << offset.trailing_zeros(); . throw_ub!(AlignmentCheckFailed { . has: Align::from_bytes(offset_pow2).unwrap(), . required: align, . }) . } 72 ( 0.00%) } . . // Extract from the pointer an `Option` and an offset, which is relative to the . // allocation or (if that is `None`) an absolute address. 197,216 ( 0.01%) let ptr_or_addr = if size.bytes() == 0 { . // Let's see what we can do, but don't throw errors if there's nothing there. . self.ptr_try_get_alloc(ptr) . } else { . // A "real" access, we insist on getting an `AllocId`. . Ok(self.ptr_get_alloc(ptr)?) . }; . Ok(match ptr_or_addr { . Err(addr) => { -- line 440 ---------------------------------------- -- line 460 ---------------------------------------- . alloc_size, . ptr_offset: self.machine_usize_to_isize(offset.bytes()), . ptr_size: size, . msg, . }) . } . // Test align. Check this last; if both bounds and alignment are violated . // we want the error to be about the bounds. 48 ( 0.00%) if let Some(align) = align { . if M::force_int_for_alignment_check(&self.extra) { . let addr = Scalar::from_pointer(ptr, &self.tcx) . .to_machine_usize(&self.tcx) . .expect("ptr-to-int cast for align check should never fail"); . check_offset_align(addr, align)?; . } else { . // Check allocation alignment and offset alignment. 48 ( 0.00%) if alloc_align.bytes() < align.bytes() { . throw_ub!(AlignmentCheckFailed { has: alloc_align, required: align }); . } 120 ( 0.00%) check_offset_align(offset.bytes(), align)?; . } . } . . // We can still be zero-sized in this branch, in which case we have to . // return `None`. . if size.bytes() == 0 { None } else { Some(ret_val) } . } . }) 360 ( 0.00%) } . . /// Test if the pointer might be null. . pub fn ptr_may_be_null(&self, ptr: Pointer>) -> bool { . match self.ptr_try_get_alloc(ptr) { . Ok((alloc_id, offset, _)) => { . let (size, _align) = self . .get_size_and_align(alloc_id, AllocCheck::MaybeDead) . .expect("alloc info with MaybeDead cannot fail"); -- line 496 ---------------------------------------- -- line 505 ---------------------------------------- . . /// Allocation accessors . impl<'mir, 'tcx, M: Machine<'mir, 'tcx>> Memory<'mir, 'tcx, M> { . /// Helper function to obtain a global (tcx) allocation. . /// This attempts to return a reference to an existing allocation if . /// one can be found in `tcx`. That, however, is only possible if `tcx` and . /// this machine use the same pointer tag, so it is indirected through . /// `M::tag_allocation`. 621,764 ( 0.04%) fn get_global_alloc( . &self, . id: AllocId, . is_write: bool, . ) -> InterpResult<'tcx, Cow<'tcx, Allocation>> { 508,716 ( 0.03%) let (alloc, def_id) = match self.tcx.get_global_alloc(id) { 56,524 ( 0.00%) Some(GlobalAlloc::Memory(mem)) => { . // Memory of a constant or promoted or anonymous memory referenced by a static. . (mem, None) . } . Some(GlobalAlloc::Function(..)) => throw_ub!(DerefFunctionPointer(id)), . None => throw_ub!(PointerUseAfterFree(id)), . Some(GlobalAlloc::Static(def_id)) => { . assert!(self.tcx.is_static(def_id)); . assert!(!self.tcx.is_thread_local_static(def_id)); -- line 527 ---------------------------------------- -- line 537 ---------------------------------------- . // to another static), those inner references only exist in "resolved" form. . if self.tcx.is_foreign_item(def_id) { . throw_unsup!(ReadExternStatic(def_id)); . } . . (self.tcx.eval_static_initializer(def_id)?, Some(def_id)) . } . }; 452,192 ( 0.03%) M::before_access_global(&self.extra, id, alloc, def_id, is_write)?; . let alloc = Cow::Borrowed(alloc); . // We got tcx memory. Let the machine initialize its "extra" stuff. . let alloc = M::init_allocation_extra( . self, . id, // always use the ID we got as input, not the "hidden" one. . alloc, . M::GLOBAL_KIND.map(MemoryKind::Machine), . ); 226,096 ( 0.01%) Ok(alloc) 452,192 ( 0.03%) } . . /// Gives raw access to the `Allocation`, without bounds or alignment checks. . /// The caller is responsible for calling the access hooks! 287,444 ( 0.02%) fn get_raw( . &self, . id: AllocId, . ) -> InterpResult<'tcx, &Allocation> { . // The error type of the inner closure here is somewhat funny. We have two . // ways of "erroring": An actual error, or because we got a reference from . // `get_global_alloc` that we can actually use directly without inserting anything anywhere. . // So the error type is `InterpResult<'tcx, &Allocation>`. . let a = self.alloc_map.get_or(id, || { 226,096 ( 0.01%) let alloc = self.get_global_alloc(id, /*is_write*/ false).map_err(Err)?; 113,048 ( 0.01%) match alloc { . Cow::Borrowed(alloc) => { . // We got a ref, cheaply return that as an "error" so that the . // map does not get mutated. . Err(Ok(alloc)) . } . Cow::Owned(alloc) => { . // Need to put it into the map and return a ref to that . let kind = M::GLOBAL_KIND.expect( -- line 577 ---------------------------------------- -- line 578 ---------------------------------------- . "I got a global allocation that I have to copy but the machine does \ . not expect that to happen", . ); . Ok((MemoryKind::Machine(kind), alloc)) . } . } . }); . // Now unpack that funny error type 30,674 ( 0.00%) match a { . Ok(a) => Ok(&a.1), . Err(a) => a, . } 215,583 ( 0.01%) } . . /// "Safe" (bounds and align-checked) allocation access. 804,300 ( 0.05%) pub fn get<'a>( . &'a self, . ptr: Pointer>, . size: Size, . align: Align, . ) -> InterpResult<'tcx, Option>> { . let align = M::enforce_alignment(&self.extra).then_some(align); . let ptr_and_alloc = self.check_and_deref_ptr( . ptr, . size, . align, . CheckInAllocMsg::MemoryAccessTest, . |alloc_id, offset, ptr| { 268,100 ( 0.02%) let alloc = self.get_raw(alloc_id)?; . Ok((alloc.size(), alloc.align, (alloc_id, offset, ptr, alloc))) . }, . )?; 134,050 ( 0.01%) if let Some((alloc_id, offset, ptr, alloc)) = ptr_and_alloc { . let range = alloc_range(offset, size); . M::memory_read(&self.extra, &alloc.extra, ptr.provenance, range)?; 469,175 ( 0.03%) Ok(Some(AllocRef { alloc, range, tcx: self.tcx, alloc_id })) . } else { . // Even in this branch we have to be sure that we actually access the allocation, in . // order to ensure that `static FOO: Type = FOO;` causes a cycle error instead of . // magically pulling *any* ZST value from the ether. However, the `get_raw` above is . // always called when `ptr` has an `AllocId`. . Ok(None) . } 603,225 ( 0.04%) } . . /// Return the `extra` field of the given allocation. . pub fn get_alloc_extra<'a>(&'a self, id: AllocId) -> InterpResult<'tcx, &'a M::AllocExtra> { . Ok(&self.get_raw(id)?.extra) . } . . /// Gives raw mutable access to the `Allocation`, without bounds or alignment checks. . /// The caller is responsible for calling the access hooks! . /// . /// Also returns a ptr to `self.extra` so that the caller can use it in parallel with the . /// allocation. 213,400 ( 0.01%) fn get_raw_mut( . &mut self, . id: AllocId, . ) -> InterpResult<'tcx, (&mut Allocation, &mut M::MemoryExtra)> . { . // We have "NLL problem case #3" here, which cannot be worked around without loss of . // efficiency even for the common case where the key is in the map. . // . // (Cannot use `get_mut_or` since `get_global_alloc` needs `&self`.) 26,675 ( 0.00%) if self.alloc_map.get_mut(id).is_none() { . // Slow path. . // Allocation not found locally, go look global. . let alloc = self.get_global_alloc(id, /*is_write*/ true)?; . let kind = M::GLOBAL_KIND.expect( . "I got a global allocation that I have to copy but the machine does \ . not expect that to happen", . ); . self.alloc_map.insert(id, (MemoryKind::Machine(kind), alloc.into_owned())); . } . 26,675 ( 0.00%) let (_kind, alloc) = self.alloc_map.get_mut(id).unwrap(); 26,675 ( 0.00%) if alloc.mutability == Mutability::Not { . throw_ub!(WriteToReadOnly(id)) . } 106,700 ( 0.01%) Ok((alloc, &mut self.extra)) 133,375 ( 0.01%) } . . /// "Safe" (bounds and align-checked) allocation access. 262,068 ( 0.02%) pub fn get_mut<'a>( . &'a mut self, . ptr: Pointer>, . size: Size, . align: Align, . ) -> InterpResult<'tcx, Option>> { . let parts = self.get_ptr_access(ptr, size, align)?; 43,678 ( 0.00%) if let Some((alloc_id, offset, ptr)) = parts { . let tcx = self.tcx; . // FIXME: can we somehow avoid looking up the allocation twice here? . // We cannot call `get_raw_mut` inside `check_and_deref_ptr` as that would duplicate `&mut self`. 65,517 ( 0.00%) let (alloc, extra) = self.get_raw_mut(alloc_id)?; . let range = alloc_range(offset, size); . M::memory_written(extra, &mut alloc.extra, ptr.provenance, range)?; 131,034 ( 0.01%) Ok(Some(AllocRefMut { alloc, range, tcx, alloc_id })) . } else { . Ok(None) . } 196,551 ( 0.01%) } . . /// Return the `extra` field of the given allocation. . pub fn get_alloc_extra_mut<'a>( . &'a mut self, . id: AllocId, . ) -> InterpResult<'tcx, (&'a mut M::AllocExtra, &'a mut M::MemoryExtra)> { . let (alloc, memory_extra) = self.get_raw_mut(id)?; . Ok((&mut alloc.extra, memory_extra)) . } . . /// Obtain the size and alignment of an allocation, even if that allocation has . /// been deallocated. . /// . /// If `liveness` is `AllocCheck::MaybeDead`, this function always returns `Ok`. 346,885 ( 0.02%) pub fn get_size_and_align( . &self, . id: AllocId, . liveness: AllocCheck, . ) -> InterpResult<'static, (Size, Align)> { . // # Regular allocations . // Don't use `self.get_raw` here as that will . // a) cause cycles in case `id` refers to a static . // b) duplicate a global's allocation in miri 157,675 ( 0.01%) if let Some((_, alloc)) = self.alloc_map.get(id) { 31,511 ( 0.00%) return Ok((alloc.size(), alloc.align)); . } . . // # Function pointers . // (both global from `alloc_map` and local from `extra_fn_ptr_map`) 96 ( 0.00%) if self.get_fn_alloc(id).is_some() { . return if let AllocCheck::Dereferenceable = liveness { . // The caller requested no function pointers. . throw_ub!(DerefFunctionPointer(id)) . } else { . Ok((Size::ZERO, Align::ONE)) . }; . } . . // # Statics . // Can't do this in the match argument, we may get cycle errors since the lock would . // be held throughout the match. 264 ( 0.00%) match self.tcx.get_global_alloc(id) { . Some(GlobalAlloc::Static(did)) => { . assert!(!self.tcx.is_thread_local_static(did)); . // Use size and align of the type. . let ty = self.tcx.type_of(did); . let layout = self.tcx.layout_of(ParamEnv::empty().and(ty)).unwrap(); . Ok((layout.size, layout.align.abi)) . } 24 ( 0.00%) Some(GlobalAlloc::Memory(alloc)) => { . // Need to duplicate the logic here, because the global allocations have . // different associated types than the interpreter-local ones. 48 ( 0.00%) Ok((alloc.size(), alloc.align)) . } . Some(GlobalAlloc::Function(_)) => bug!("We already checked function pointers above"), . // The rest must be dead. . None => { . if let AllocCheck::MaybeDead = liveness { . // Deallocated pointers are allowed, we should be able to find . // them in the map. . Ok(*self -- line 740 ---------------------------------------- -- line 741 ---------------------------------------- . .dead_alloc_map . .get(&id) . .expect("deallocated pointers should all be recorded in `dead_alloc_map`")) . } else { . throw_ub!(PointerUseAfterFree(id)) . } . } . } 252,280 ( 0.01%) } . 96 ( 0.00%) fn get_fn_alloc(&self, id: AllocId) -> Option> { . if let Some(extra) = self.extra_fn_ptr_map.get(&id) { . Some(FnVal::Other(*extra)) . } else { 120 ( 0.00%) match self.tcx.get_global_alloc(id) { . Some(GlobalAlloc::Function(instance)) => Some(FnVal::Instance(instance)), 24 ( 0.00%) _ => None, . } . } 96 ( 0.00%) } . . pub fn get_fn( . &self, . ptr: Pointer>, . ) -> InterpResult<'tcx, FnVal<'tcx, M::ExtraFnVal>> { . trace!("get_fn({:?})", ptr); . let (alloc_id, offset, _ptr) = self.ptr_get_alloc(ptr)?; . if offset.bytes() != 0 { -- line 768 ---------------------------------------- -- line 903 ---------------------------------------- . writeln!(fmt)?; . } . Ok(()) . } . } . . /// Reading and writing. . impl<'tcx, 'a, Tag: Provenance, Extra> AllocRefMut<'a, 'tcx, Tag, Extra> { 204,057 ( 0.01%) pub fn write_scalar( . &mut self, . range: AllocRange, . val: ScalarMaybeUninit, . ) -> InterpResult<'tcx> { 113,365 ( 0.01%) Ok(self . .alloc 249,403 ( 0.01%) .write_scalar(&self.tcx, self.range.subrange(range), val) . .map_err(|e| e.to_interp_error(self.alloc_id))?) 136,038 ( 0.01%) } . . pub fn write_ptr_sized( . &mut self, . offset: Size, . val: ScalarMaybeUninit, . ) -> InterpResult<'tcx> { . self.write_scalar(alloc_range(offset, self.tcx.data_layout().pointer_size), val) . } . } . . impl<'tcx, 'a, Tag: Provenance, Extra> AllocRef<'a, 'tcx, Tag, Extra> { 6,720 ( 0.00%) pub fn read_scalar(&self, range: AllocRange) -> InterpResult<'tcx, ScalarMaybeUninit> { 690,799 ( 0.04%) Ok(self . .alloc 379,014 ( 0.02%) .read_scalar(&self.tcx, self.range.subrange(range)) . .map_err(|e| e.to_interp_error(self.alloc_id))?) 6,720 ( 0.00%) } . . pub fn read_ptr_sized(&self, offset: Size) -> InterpResult<'tcx, ScalarMaybeUninit> { . self.read_scalar(alloc_range(offset, self.tcx.data_layout().pointer_size)) . } . . pub fn check_bytes(&self, range: AllocRange, allow_uninit_and_ptr: bool) -> InterpResult<'tcx> { . Ok(self . .alloc -- line 945 ---------------------------------------- -- line 1016 ---------------------------------------- . &mut self, . src: Pointer>, . src_align: Align, . dest: Pointer>, . dest_align: Align, . size: Size, . nonoverlapping: bool, . ) -> InterpResult<'tcx> { 24,180 ( 0.00%) self.copy_repeatedly(src, src_align, dest, dest_align, size, 1, nonoverlapping) . } . 62,868 ( 0.00%) pub fn copy_repeatedly( . &mut self, . src: Pointer>, . src_align: Align, . dest: Pointer>, . dest_align: Align, . size: Size, . num_copies: u64, . nonoverlapping: bool, . ) -> InterpResult<'tcx> { 9,672 ( 0.00%) let tcx = self.tcx; . // We need to do our own bounds-checks. . let src_parts = self.get_ptr_access(src, size, src_align)?; . let dest_parts = self.get_ptr_access(dest, size * num_copies, dest_align)?; // `Size` multiplication . . // FIXME: we look up both allocations twice here, once ebfore for the `check_ptr_access` . // and once below to get the underlying `&[mut] Allocation`. . . // Source alloc preparations and access hooks. 9,672 ( 0.00%) let (src_alloc_id, src_offset, src) = match src_parts { . None => return Ok(()), // Zero-sized *source*, that means dst is also zero-sized and we have nothing to do. . Some(src_ptr) => src_ptr, . }; 19,344 ( 0.00%) let src_alloc = self.get_raw(src_alloc_id)?; . let src_range = alloc_range(src_offset, size); . M::memory_read(&self.extra, &src_alloc.extra, src.provenance, src_range)?; . // We need the `dest` ptr for the next operation, so we get it now. . // We already did the source checks and called the hooks so we are good to return early. 9,672 ( 0.00%) let (dest_alloc_id, dest_offset, dest) = match dest_parts { . None => return Ok(()), // Zero-sized *destiantion*. . Some(dest_ptr) => dest_ptr, . }; . . // This checks relocation edges on the src, which needs to happen before . // `prepare_relocation_copy`. . let src_bytes = src_alloc . .get_bytes_with_uninit_and_ptr(&tcx, src_range) . .map_err(|e| e.to_interp_error(src_alloc_id))? . .as_ptr(); // raw ptr, so we can also get a ptr to the destination allocation . // first copy the relocations to a temporary buffer, because . // `get_bytes_mut` will clear the relocations, which is correct, . // since we don't want to keep any relocations at the target. . let relocations = 58,032 ( 0.00%) src_alloc.prepare_relocation_copy(self, src_range, dest_offset, num_copies); . // Prepare a copy of the initialization mask. 19,344 ( 0.00%) let compressed = src_alloc.compress_uninit_range(src_range); . . // Destination alloc preparations and access hooks. 14,508 ( 0.00%) let (dest_alloc, extra) = self.get_raw_mut(dest_alloc_id)?; 14,508 ( 0.00%) let dest_range = alloc_range(dest_offset, size * num_copies); . M::memory_written(extra, &mut dest_alloc.extra, dest.provenance, dest_range)?; 19,344 ( 0.00%) let dest_bytes = dest_alloc . .get_bytes_mut_ptr(&tcx, dest_range) . .map_err(|e| e.to_interp_error(dest_alloc_id))? . .as_mut_ptr(); . 14,508 ( 0.00%) if compressed.no_bytes_init() { . // Fast path: If all bytes are `uninit` then there is nothing to copy. The target range . // is marked as uninitialized but we otherwise omit changing the byte representation which may . // be arbitrary for uninitialized bytes. . // This also avoids writing to the target bytes so that the backing allocation is never . // touched if the bytes stay uninitialized for the whole interpreter execution. On contemporary . // operating system this can avoid physically allocating the page. . dest_alloc.mark_init(dest_range, false); // `Size` multiplication . dest_alloc.mark_relocation_range(relocations); -- line 1091 ---------------------------------------- -- line 1093 ---------------------------------------- . } . . // SAFE: The above indexing would have panicked if there weren't at least `size` bytes . // behind `src` and `dest`. Also, we use the overlapping-safe `ptr::copy` if `src` and . // `dest` could possibly overlap. . // The pointers above remain valid even if the `HashMap` table is moved around because they . // point into the `Vec` storing the bytes. . unsafe { 4,836 ( 0.00%) if src_alloc_id == dest_alloc_id { . if nonoverlapping { . // `Size` additions . if (src_offset <= dest_offset && src_offset + size > dest_offset) . || (dest_offset <= src_offset && dest_offset + size > src_offset) . { . throw_ub_format!("copy_nonoverlapping called on overlapping ranges") . } . } -- line 1109 ---------------------------------------- -- line 1114 ---------------------------------------- . dest_bytes.add((size * i).bytes_usize()), // `Size` multiplication . size.bytes_usize(), . ); . } . } else { . for i in 0..num_copies { . ptr::copy_nonoverlapping( . src_bytes, 14,508 ( 0.00%) dest_bytes.add((size * i).bytes_usize()), // `Size` multiplication . size.bytes_usize(), . ); . } . } . } . . // now fill in all the "init" data 24,180 ( 0.00%) dest_alloc.mark_compressed_init_range( . &compressed, . alloc_range(dest_offset, size), // just a single copy (i.e., not full `dest_range`) . num_copies, . ); . // copy the relocations to the destination 43,524 ( 0.00%) dest_alloc.mark_relocation_range(relocations); . . Ok(()) 43,524 ( 0.00%) } . } . . /// Machine pointer introspection. . impl<'mir, 'tcx, M: Machine<'mir, 'tcx>> Memory<'mir, 'tcx, M> { 36 ( 0.00%) pub fn scalar_to_ptr(&self, scalar: Scalar) -> Pointer> { . // We use `to_bits_or_ptr_internal` since we are just implementing the method people need to . // call to force getting out a pointer. 180 ( 0.00%) match scalar.to_bits_or_ptr_internal(self.pointer_size()) { . Err(ptr) => ptr.into(), . Ok(bits) => { . let addr = u64::try_from(bits).unwrap(); . let ptr = M::ptr_from_addr(&self, addr); . if addr == 0 { . assert!(ptr.provenance.is_none(), "null pointer can never have an AllocId"); . } . ptr . } . } 72 ( 0.00%) } . . /// Turning a "maybe pointer" into a proper pointer (and some information . /// about where it points), or an absolute address. . pub fn ptr_try_get_alloc( . &self, . ptr: Pointer>, . ) -> Result<(AllocId, Size, Pointer), u64> { . match ptr.into_pointer_or_addr() { -- line 1166 ---------------------------------------- 680,219 ( 0.04%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/std/src/sys/unix/alloc.rs -------------------------------------------------------------------------------- Ir -- line 5 ---------------------------------------- . #[stable(feature = "alloc_system_type", since = "1.28.0")] . unsafe impl GlobalAlloc for System { . #[inline] . unsafe fn alloc(&self, layout: Layout) -> *mut u8 { . // jemalloc provides alignment less than MIN_ALIGN for small allocations. . // So only rely on MIN_ALIGN if size >= align. . // Also see and . // . 2,410,004 ( 0.14%) if layout.align() <= MIN_ALIGN && layout.align() <= layout.size() { 1,807,503 ( 0.11%) libc::malloc(layout.size()) as *mut u8 . } else { . #[cfg(target_os = "macos")] . { . if layout.align() > (1 << 31) { . return ptr::null_mut(); . } . } . aligned_malloc(&layout) . } . } . . #[inline] . unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8 { . // See the comment above in `alloc` for why this check looks the way it does. 70,592 ( 0.00%) if layout.align() <= MIN_ALIGN && layout.align() <= layout.size() { 105,888 ( 0.01%) libc::calloc(layout.size(), 1) as *mut u8 . } else { . let ptr = self.alloc(layout); . if !ptr.is_null() { . ptr::write_bytes(ptr, 0, layout.size()); . } . ptr . } . } . . #[inline] . unsafe fn dealloc(&self, ptr: *mut u8, _layout: Layout) { 620,138 ( 0.04%) libc::free(ptr as *mut libc::c_void) . } . . #[inline] . unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 { 192,504 ( 0.01%) if layout.align() <= MIN_ALIGN && layout.align() <= new_size { 385,008 ( 0.02%) libc::realloc(ptr as *mut libc::c_void, new_size) as *mut u8 . } else { . realloc_fallback(self, ptr, layout, new_size) . } . } . } . . cfg_if::cfg_if! { . if #[cfg(any( -- line 56 ---------------------------------------- -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_trait_selection/src/traits/query/type_op/mod.rs -------------------------------------------------------------------------------- Ir -- line 72 ---------------------------------------- . /// it might do things like invoke `sub_regions`, which would be . /// bad, because it would create subregion relationships that are . /// not captured in the return value. . fn perform_query( . tcx: TyCtxt<'tcx>, . canonicalized: Canonicalized<'tcx, ParamEnvAnd<'tcx, Self>>, . ) -> Fallible>; . 524,241 ( 0.03%) fn fully_perform_into( . query_key: ParamEnvAnd<'tcx, Self>, . infcx: &InferCtxt<'_, 'tcx>, . output_query_region_constraints: &mut QueryRegionConstraints<'tcx>, . ) -> Fallible<( . Self::QueryResponse, . Option>>, . PredicateObligations<'tcx>, . Certainty, . )> { 124,614 ( 0.01%) if let Some(result) = QueryTypeOp::try_fast_path(infcx.tcx, &query_key) { 245,270 ( 0.01%) return Ok((result, None, vec![], Certainty::Proven)); . } . . // FIXME(#33684) -- We need to use . // `canonicalize_query_keep_static` here because of things . // like the subtype query, which go awry around . // `'static` otherwise. 6,122 ( 0.00%) let mut canonical_var_values = OriginalQueryValues::default(); 129 ( 0.00%) let old_param_env = query_key.param_env; . let canonical_self = 3,615 ( 0.00%) infcx.canonicalize_query_keep_static(query_key, &mut canonical_var_values); 30,363 ( 0.00%) let canonical_result = Self::perform_query(infcx.tcx, canonical_self)?; . 40,092 ( 0.00%) let InferOk { value, obligations } = infcx . .instantiate_nll_query_response_and_region_obligations( . &ObligationCause::dummy(), . old_param_env, . &canonical_var_values, . canonical_result, . output_query_region_constraints, . )?; . 50,100 ( 0.00%) Ok((value, Some(canonical_self), obligations, canonical_result.value.certainty)) 470,727 ( 0.03%) } . } . . impl<'tcx, Q> TypeOp<'tcx> for ParamEnvAnd<'tcx, Q> . where . Q: QueryTypeOp<'tcx>, . { . type Output = Q::QueryResponse; . 433,664 ( 0.03%) fn fully_perform(self, infcx: &InferCtxt<'_, 'tcx>) -> Fallible> { . let mut region_constraints = QueryRegionConstraints::default(); 330,650 ( 0.02%) let (output, canonicalized_query, mut obligations, _) = 59,986 ( 0.00%) Q::fully_perform_into(self, infcx, &mut region_constraints)?; . . // Typically, instantiating NLL query results does not . // create obligations. However, in some cases there . // are unresolved type variables, and unify them *can* . // create obligations. In that case, we have to go . // fulfill them. We do this via a (recursive) query. 54,210 ( 0.00%) while !obligations.is_empty() { . trace!("{:#?}", obligations); . let mut progress = false; 34 ( 0.00%) for obligation in std::mem::take(&mut obligations) { 8 ( 0.00%) let obligation = infcx.resolve_vars_if_possible(obligation); 32 ( 0.00%) match ProvePredicate::fully_perform_into( 8 ( 0.00%) obligation.param_env.and(ProvePredicate::new(obligation.predicate)), . infcx, . &mut region_constraints, . ) { 8 ( 0.00%) Ok(((), _, new, certainty)) => { . obligations.extend(new); . progress = true; 4 ( 0.00%) if let Certainty::Ambiguous = certainty { . obligations.push(obligation); . } . } . Err(_) => obligations.push(obligation), . } . } 4 ( 0.00%) if !progress { . return Err(NoSolution); . } . } . . // Promote the final query-region-constraints into a . // (optional) ref-counted vector: . let region_constraints = 216,832 ( 0.01%) if region_constraints.is_empty() { None } else { Some(Rc::new(region_constraints)) }; . 674,884 ( 0.04%) Ok(TypeOpOutput { output, constraints: region_constraints, canonicalized_query }) 542,080 ( 0.03%) } . } 380,702 ( 0.02%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_lexer/src/unescape.rs -------------------------------------------------------------------------------- Ir -- line 73 ---------------------------------------- . EscapeError::UnskippedWhitespaceWarning | EscapeError::MultipleSkippedLinesWarning . ) . } . } . . /// Takes a contents of a literal (without quotes) and produces a . /// sequence of escaped characters or errors. . /// Values are returned through invoking of the provided callback. 158,856 ( 0.01%) pub fn unescape_literal(literal_text: &str, mode: Mode, callback: &mut F) . where . F: FnMut(Range, Result), . { . match mode { . Mode::Char | Mode::Byte => { 34,002 ( 0.00%) let mut chars = literal_text.chars(); 11,334 ( 0.00%) let result = unescape_char_or_byte(&mut chars, mode); . // The Chars iterator moved forward. 79,338 ( 0.00%) callback(0..(literal_text.len() - chars.as_str().len()), result); . } . Mode::Str | Mode::ByteStr => unescape_str_or_byte_str(literal_text, mode, callback), . // NOTE: Raw strings do not perform any explicit character escaping, here we . // only translate CRLF to LF and produce errors on bare CR. . Mode::RawStr | Mode::RawByteStr => { . unescape_raw_str_or_byte_str(literal_text, mode, callback) . } . } 90,752 ( 0.01%) } . . /// Takes a contents of a byte, byte string or raw byte string (without quotes) . /// and produces a sequence of bytes or errors. . /// Values are returned through invoking of the provided callback. . pub fn unescape_byte_literal(literal_text: &str, mode: Mode, callback: &mut F) . where . F: FnMut(Range, Result), . { -- line 107 ---------------------------------------- -- line 108 ---------------------------------------- . assert!(mode.is_bytes()); . unescape_literal(literal_text, mode, &mut |range, result| { . callback(range, result.map(byte_from_char)); . }) . } . . /// Takes a contents of a char literal (without quotes), and returns an . /// unescaped char or an error 68,004 ( 0.00%) pub fn unescape_char(literal_text: &str) -> Result { 45,336 ( 0.00%) let mut chars = literal_text.chars(); 22,668 ( 0.00%) unescape_char_or_byte(&mut chars, Mode::Char) . .map_err(|err| (literal_text.len() - chars.as_str().len(), err)) 68,004 ( 0.00%) } . . /// Takes a contents of a byte literal (without quotes), and returns an . /// unescaped byte or an error. . pub fn unescape_byte(literal_text: &str) -> Result { . let mut chars = literal_text.chars(); . unescape_char_or_byte(&mut chars, Mode::Byte) . .map(byte_from_char) . .map_err(|err| (literal_text.len() - chars.as_str().len(), err)) -- line 128 ---------------------------------------- -- line 136 ---------------------------------------- . Byte, . ByteStr, . RawStr, . RawByteStr, . } . . impl Mode { . pub fn in_single_quotes(self) -> bool { 20 ( 0.00%) match self { . Mode::Char | Mode::Byte => true, . Mode::Str | Mode::ByteStr | Mode::RawStr | Mode::RawByteStr => false, . } . } . 20 ( 0.00%) pub fn in_double_quotes(self) -> bool { . !self.in_single_quotes() 10 ( 0.00%) } . . pub fn is_bytes(self) -> bool { . match self { . Mode::Byte | Mode::ByteStr | Mode::RawByteStr => true, . Mode::Char | Mode::Str | Mode::RawStr => false, . } . } . } . 228,620 ( 0.01%) fn scan_escape(first_char: char, chars: &mut Chars<'_>, mode: Mode) -> Result { 114,296 ( 0.01%) if first_char != '\\' { . // Previous character was not a slash, and we don't expect it to be . // an escape-only character. . return match first_char { . '\t' | '\n' => Err(EscapeError::EscapeOnlyChar), . '\r' => Err(EscapeError::BareCarriageReturn), . '\'' if mode.in_single_quotes() => Err(EscapeError::EscapeOnlyChar), . '"' if mode.in_double_quotes() => Err(EscapeError::EscapeOnlyChar), . _ => { 194 ( 0.00%) if mode.is_bytes() && !first_char.is_ascii() { . // Byte literal can't be a non-ascii character. . return Err(EscapeError::NonAsciiCharInByte); . } . Ok(first_char) . } . }; . } . . // Previous character is '\\', try to unescape it. . 68,004 ( 0.00%) let second_char = chars.next().ok_or(EscapeError::LoneSlash)?; . . let res = match second_char { . '"' => '"', . 'n' => '\n', . 'r' => '\r', . 't' => '\t', . '\\' => '\\', . '\'' => '\'', -- line 191 ---------------------------------------- -- line 209 ---------------------------------------- . let value = value as u8; . . value as char . } . . 'u' => { . // We've parsed '\u', now we have to parse '{..}'. . 90,640 ( 0.01%) if chars.next() != Some('{') { . return Err(EscapeError::NoBraceInUnicodeEscape); . } . . // First character must be a hexadecimal digit. . let mut n_digits = 1; 181,280 ( 0.01%) let mut value: u32 = match chars.next().ok_or(EscapeError::UnclosedUnicodeEscape)? { . '_' => return Err(EscapeError::LeadingUnderscoreUnicodeEscape), . '}' => return Err(EscapeError::EmptyUnicodeEscape), 8,266 ( 0.00%) c => c.to_digit(16).ok_or(EscapeError::InvalidCharInUnicodeEscape)?, . }; . . // First character is valid, now parse the rest of the number . // and closing brace. . loop { 673,320 ( 0.04%) match chars.next() { . None => return Err(EscapeError::UnclosedUnicodeEscape), . Some('_') => continue, . Some('}') => { 45,320 ( 0.00%) if n_digits > 6 { . return Err(EscapeError::OverlongUnicodeEscape); . } . . // Incorrect syntax has higher priority for error reporting . // than unallowed value for a literal. . if mode.is_bytes() { . return Err(EscapeError::UnicodeEscapeInByte); . } . 67,980 ( 0.00%) break std::char::from_u32(value).ok_or_else(|| { . if value > 0x10FFFF { . EscapeError::OutOfRangeUnicodeEscape . } else { . EscapeError::LoneSurrogateUnicodeEscape . } . })?; . } . Some(c) => { . let digit = 24,566 ( 0.00%) c.to_digit(16).ok_or(EscapeError::InvalidCharInUnicodeEscape)?; 134,340 ( 0.01%) n_digits += 1; 134,340 ( 0.01%) if n_digits > 6 { . // Stop updating value since we're sure that it's is incorrect already. . continue; . } . let digit = digit as u32; 470,190 ( 0.03%) value = value * 16 + digit; . } . }; . } . } . _ => return Err(EscapeError::InvalidEscape), . }; . Ok(res) 274,344 ( 0.02%) } . 22,668 ( 0.00%) fn unescape_char_or_byte(chars: &mut Chars<'_>, mode: Mode) -> Result { . let first_char = chars.next().ok_or(EscapeError::ZeroChars)?; 113,340 ( 0.01%) let res = scan_escape(first_char, chars, mode)?; . if chars.next().is_some() { . return Err(EscapeError::MoreThanOneChar); . } . Ok(res) 113,340 ( 0.01%) } . . /// Takes a contents of a string literal (without quotes) and produces a . /// sequence of escaped characters or errors. . fn unescape_str_or_byte_str(src: &str, mode: Mode, callback: &mut F) . where . F: FnMut(Range, Result), . { 32 ( 0.00%) assert!(mode.in_double_quotes()); . let initial_len = src.len(); 10 ( 0.00%) let mut chars = src.chars(); . while let Some(first_char) = chars.next() { 970 ( 0.00%) let start = initial_len - chars.as_str().len() - first_char.len_utf8(); . 1,100 ( 0.00%) let unescaped_char = match first_char { . '\\' => { . let second_char = chars.clone().next(); 32 ( 0.00%) match second_char { . Some('\n') => { . // Rust language specification requires us to skip whitespaces . // if unescaped '\' character is followed by '\n'. . // For details see [Rust language reference] . // (https://doc.rust-lang.org/reference/tokens.html#string-literals). . skip_ascii_whitespace(&mut chars, start, callback); . continue; . } 16 ( 0.00%) _ => scan_escape(first_char, &mut chars, mode), . } . } . '\n' => Ok('\n'), . '\t' => Ok('\t'), . _ => scan_escape(first_char, &mut chars, mode), . }; 574 ( 0.00%) let end = initial_len - chars.as_str().len(); 2,442 ( 0.00%) callback(start..end, unescaped_char); . } . . fn skip_ascii_whitespace(chars: &mut Chars<'_>, start: usize, callback: &mut F) . where . F: FnMut(Range, Result), . { . let tail = chars.as_str(); . let first_non_space = tail -- line 322 ---------------------------------------- -- line 344 ---------------------------------------- . /// Takes a contents of a string literal (without quotes) and produces a . /// sequence of characters or errors. . /// NOTE: Raw strings do not perform any explicit character escaping, here we . /// only translate CRLF to LF and produce errors on bare CR. . fn unescape_raw_str_or_byte_str(literal_text: &str, mode: Mode, callback: &mut F) . where . F: FnMut(Range, Result), . { 16 ( 0.00%) assert!(mode.in_double_quotes()); . let initial_len = literal_text.len(); . . let mut chars = literal_text.chars(); . while let Some(curr) = chars.next() { . let start = initial_len - chars.as_str().len() - curr.len_utf8(); . . let result = match curr { . '\r' => Err(EscapeError::BareCarriageReturnInRawString), -- line 360 ---------------------------------------- 511,755 ( 0.03%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/undo_log.rs -------------------------------------------------------------------------------- Ir -- line 28 ---------------------------------------- . PushRegionObligation, . } . . macro_rules! impl_from { . ($($ctor: ident ($ty: ty),)*) => { . $( . impl<'tcx> From<$ty> for UndoLog<'tcx> { . fn from(x: $ty) -> Self { 522 ( 0.00%) UndoLog::$ctor(x.into()) . } . } . )* . } . } . . // Upcast from a single kind of "undoable action" to the general enum . impl_from! { -- line 44 ---------------------------------------- -- line 57 ---------------------------------------- . ConstUnificationTable(sv::UndoLog>>), . . RegionUnificationTable(sv::UndoLog>>), . ProjectionCache(traits::UndoLog<'tcx>), . } . . /// The Rollback trait defines how to rollback a particular action. . impl<'tcx> Rollback> for InferCtxtInner<'tcx> { 321,996 ( 0.02%) fn reverse(&mut self, undo: UndoLog<'tcx>) { 536,660 ( 0.03%) match undo { 986,100 ( 0.06%) UndoLog::TypeVariables(undo) => self.type_variable_storage.reverse(undo), 78 ( 0.00%) UndoLog::ConstUnificationTable(undo) => self.const_unification_storage.reverse(undo), 64 ( 0.00%) UndoLog::IntUnificationTable(undo) => self.int_unification_storage.reverse(undo), . UndoLog::FloatUnificationTable(undo) => self.float_unification_storage.reverse(undo), . UndoLog::RegionConstraintCollector(undo) => { 33,264 ( 0.00%) self.region_constraint_storage.as_mut().unwrap().reverse(undo) . } . UndoLog::RegionUnificationTable(undo) => { 7,630 ( 0.00%) self.region_constraint_storage.as_mut().unwrap().unification_table.reverse(undo) . } . UndoLog::ProjectionCache(undo) => self.projection_cache.reverse(undo), . UndoLog::PushRegionObligation => { . self.region_obligations.pop(); . } . } 429,328 ( 0.02%) } . } . . /// The combined undo log for all the various unification tables. For each change to the storage . /// for any kind of inference variable, we record an UndoLog entry in the vector here. . pub(crate) struct InferCtxtUndoLogs<'tcx> { . logs: Vec>, . num_open_snapshots: usize, . } . . impl Default for InferCtxtUndoLogs<'_> { . fn default() -> Self { 7,218 ( 0.00%) Self { logs: Default::default(), num_open_snapshots: Default::default() } . } . } . . /// The UndoLogs trait defines how we undo a particular kind of action (of type T). We can undo any . /// action that is convertable into an UndoLog (per the From impls above). . impl<'tcx, T> UndoLogs for InferCtxtUndoLogs<'tcx> . where . UndoLog<'tcx>: From, -- line 102 ---------------------------------------- -- line 103 ---------------------------------------- . { . #[inline] . fn num_open_snapshots(&self) -> usize { . self.num_open_snapshots . } . . #[inline] . fn push(&mut self, undo: T) { 43,904 ( 0.00%) if self.in_snapshot() { 4,176 ( 0.00%) self.logs.push(undo.into()) . } . } . . fn clear(&mut self) { . self.logs.clear(); . self.num_open_snapshots = 0; . } . -- line 120 ---------------------------------------- -- line 125 ---------------------------------------- . { . if self.in_snapshot() { . self.logs.extend(undos.into_iter().map(UndoLog::from)) . } . } . } . . impl<'tcx> InferCtxtInner<'tcx> { 138,648 ( 0.01%) pub fn rollback_to(&mut self, snapshot: Snapshot<'tcx>) { . debug!("rollback_to({})", snapshot.undo_len); . self.undo_log.assert_open_snapshot(&snapshot); . 368,212 ( 0.02%) while self.undo_log.logs.len() > snapshot.undo_len { . let undo = self.undo_log.logs.pop().unwrap(); 1,287,984 ( 0.07%) self.reverse(undo); . } . 65,529 ( 0.00%) if self.undo_log.num_open_snapshots == 1 { . // The root snapshot. It's safe to clear the undo log because . // there's no snapshot further out that we might need to roll back . // to. 4,808 ( 0.00%) assert!(snapshot.undo_len == 0); . self.undo_log.logs.clear(); . } . 71,728 ( 0.00%) self.undo_log.num_open_snapshots -= 1; 161,756 ( 0.01%) } . . pub fn commit(&mut self, snapshot: Snapshot<'tcx>) { . debug!("commit({})", snapshot.undo_len); . 343,977 ( 0.02%) if self.undo_log.num_open_snapshots == 1 { . // The root snapshot. It's safe to clear the undo log because . // there's no snapshot further out that we might need to roll back . // to. 70,846 ( 0.00%) assert!(snapshot.undo_len == 0); . self.undo_log.logs.clear(); . } . 379,400 ( 0.02%) self.undo_log.num_open_snapshots -= 1; . } . } . . impl<'tcx> InferCtxtUndoLogs<'tcx> { . pub fn start_snapshot(&mut self) -> Snapshot<'tcx> { 551,068 ( 0.03%) self.num_open_snapshots += 1; . Snapshot { undo_len: self.logs.len(), _marker: PhantomData } . } . . pub(crate) fn region_constraints_in_snapshot( . &self, . s: &Snapshot<'tcx>, . ) -> impl Iterator> + Clone { 3,319 ( 0.00%) self.logs[s.undo_len..].iter().filter_map(|log| match log { . UndoLog::RegionConstraintCollector(log) => Some(log), . _ => None, . }) . } . . pub(crate) fn region_constraints( . &self, . ) -> impl Iterator> + Clone { 602 ( 0.00%) self.logs.iter().filter_map(|log| match log { . UndoLog::RegionConstraintCollector(log) => Some(log), . _ => None, . }) . } . . fn assert_open_snapshot(&self, snapshot: &Snapshot<'tcx>) { . // Failures here may indicate a failure to follow a stack discipline. 69,324 ( 0.00%) assert!(self.logs.len() >= snapshot.undo_len); 69,324 ( 0.00%) assert!(self.num_open_snapshots > 0); . } . } . . impl<'tcx> std::ops::Index for InferCtxtUndoLogs<'tcx> { . type Output = UndoLog<'tcx>; . . fn index(&self, key: usize) -> &Self::Output { . &self.logs[key] -- line 204 ---------------------------------------- 131,336 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_parse/src/lexer/tokentrees.rs -------------------------------------------------------------------------------- Ir -- line 8 ---------------------------------------- . }; . use rustc_ast_pretty::pprust::token_to_string; . use rustc_data_structures::fx::FxHashMap; . use rustc_errors::PResult; . use rustc_span::Span; . . impl<'a> StringReader<'a> { . pub(super) fn into_token_trees(self) -> (PResult<'a, TokenStream>, Vec) { 95 ( 0.00%) let mut tt_reader = TokenTreesReader { . string_reader: self, 5 ( 0.00%) token: Token::dummy(), . open_braces: Vec::new(), . unmatched_braces: Vec::new(), . matching_delim_spans: Vec::new(), . last_unclosed_found_span: None, . last_delim_empty_block_spans: FxHashMap::default(), . matching_block_spans: Vec::new(), . }; 5 ( 0.00%) let res = tt_reader.parse_all_token_trees(); 30 ( 0.00%) (res, tt_reader.unmatched_braces) . } . } . . struct TokenTreesReader<'a> { . string_reader: StringReader<'a>, . token: Token, . /// Stack of open delimiters and their spans. Used for error message. . open_braces: Vec<(token::DelimToken, Span)>, -- line 35 ---------------------------------------- -- line 43 ---------------------------------------- . last_delim_empty_block_spans: FxHashMap, . /// Collect the spans of braces (Open, Close). Used only . /// for detecting if blocks are empty and only braces. . matching_block_spans: Vec<(Span, Span)>, . } . . impl<'a> TokenTreesReader<'a> { . // Parse a stream of tokens into a list of `TokenTree`s, up to an `Eof`. 40 ( 0.00%) fn parse_all_token_trees(&mut self) -> PResult<'a, TokenStream> { . let mut buf = TokenStreamBuilder::default(); . . self.bump(); 1,672 ( 0.00%) while self.token != token::Eof { 6,648 ( 0.00%) buf.push(self.parse_token_tree()?); . } . . Ok(buf.into_token_stream()) 45 ( 0.00%) } . . // Parse a stream of tokens into a list of `TokenTree`s, up to a `CloseDelim`. . fn parse_token_trees_until_close_delim(&mut self) -> TokenStream { . let mut buf = TokenStreamBuilder::default(); . loop { 109,716 ( 0.01%) if let token::CloseDelim(..) = self.token.kind { . return buf.into_token_stream(); . } . 239,640 ( 0.01%) match self.parse_token_tree() { 431,352 ( 0.03%) Ok(tree) => buf.push(tree), . Err(mut e) => { . e.emit(); . return buf.into_token_stream(); . } . } . } . } . 438,831 ( 0.03%) fn parse_token_tree(&mut self) -> PResult<'a, TreeAndSpacing> { 97,518 ( 0.01%) let sm = self.string_reader.sess.source_map(); . 411,111 ( 0.02%) match self.token.kind { . token::Eof => { . let msg = "this file contains an unclosed delimiter"; . let mut err = . self.string_reader.sess.span_diagnostic.struct_span_err(self.token.span, msg); . for &(_, sp) in &self.open_braces { . err.span_label(sp, "unclosed delimiter"); . self.unmatched_braces.push(UnmatchedBrace { . expected_delim: token::DelimToken::Brace, -- line 91 ---------------------------------------- -- line 113 ---------------------------------------- . err.span_label( . *close_sp, . "...as it matches this but it has different indentation", . ); . } . } . Err(err) . } 6,930 ( 0.00%) token::OpenDelim(delim) => { . // The span for beginning of the delimited section 6,930 ( 0.00%) let pre_span = self.token.span; . . // Parse the open delimiter. 48,510 ( 0.00%) self.open_braces.push((delim, self.token.span)); . self.bump(); . . // Parse the token trees within the delimiters. . // We stop at any delimiter so we can try to recover if the user . // uses an incorrect delimiter. 6,930 ( 0.00%) let tts = self.parse_token_trees_until_close_delim(); . . // Expand to cover the entire delimited token tree 34,650 ( 0.00%) let delim_span = DelimSpan::from_pair(pre_span, self.token.span); . 13,860 ( 0.00%) match self.token.kind { . // Correct delimiter. 13,860 ( 0.00%) token::CloseDelim(d) if d == delim => { . let (open_brace, open_brace_span) = self.open_braces.pop().unwrap(); 13,860 ( 0.00%) let close_brace_span = self.token.span; . 20,790 ( 0.00%) if tts.is_empty() { 441 ( 0.00%) let empty_block_span = open_brace_span.to(close_brace_span); 588 ( 0.00%) if !sm.is_multiline(empty_block_span) { . // Only track if the block is in the form of `{}`, otherwise it is . // likely that it was written on purpose. . self.last_delim_empty_block_spans.insert(delim, empty_block_span); . } . } . . //only add braces 27,720 ( 0.00%) if let (DelimToken::Brace, DelimToken::Brace) = (open_brace, delim) { . self.matching_block_spans.push((open_brace_span, close_brace_span)); . } . 6,930 ( 0.00%) if self.open_braces.is_empty() { . // Clear up these spans to avoid suggesting them as we've found . // properly matched delimiters so far for an entire block. . self.matching_delim_spans.clear(); . } else { . self.matching_delim_spans.push(( . open_brace, . open_brace_span, . close_brace_span, -- line 165 ---------------------------------------- -- line 218 ---------------------------------------- . token::Eof => { . // Silently recover, the EOF token will be seen again . // and an error emitted then. Thus we don't pop from . // self.open_braces here. . } . _ => {} . } . 48,510 ( 0.00%) Ok(TokenTree::Delimited(delim_span, delim, tts).into()) . } . token::CloseDelim(delim) => { . // An unexpected closing delimiter (i.e., there is no . // matching opening delimiter). . let token_str = token_to_string(&self.token); . let msg = format!("unexpected closing delimiter: `{}`", token_str); . let mut err = . self.string_reader.sess.span_diagnostic.struct_span_err(self.token.span, &msg); -- line 234 ---------------------------------------- -- line 253 ---------------------------------------- . err.span_label(parent.1, "...matches this closing brace"); . } . } . . err.span_label(self.token.span, "unexpected closing delimiter"); . Err(err) . } . _ => { 209,145 ( 0.01%) let tt = TokenTree::Token(self.token.take()); . let mut spacing = self.bump(); 83,658 ( 0.00%) if !self.token.is_op() { . spacing = Alone; . } 250,974 ( 0.01%) Ok((tt, spacing)) . } . } 390,072 ( 0.02%) } . . fn bump(&mut self) -> Spacing { 466,581 ( 0.03%) let (spacing, token) = self.string_reader.next_token(); 243,840 ( 0.01%) self.token = token; . spacing . } . } . 6,930 ( 0.00%) #[derive(Default)] . struct TokenStreamBuilder { . buf: Vec, . } . . impl TokenStreamBuilder { 633,867 ( 0.04%) fn push(&mut self, (tree, joint): TreeAndSpacing) { 298,732 ( 0.02%) if let Some((TokenTree::Token(prev_token), Joint)) = self.buf.last() { 26,674 ( 0.00%) if let TokenTree::Token(token) = &tree { 43,563 ( 0.00%) if let Some(glued) = prev_token.glue(token) { . self.buf.pop(); 10,656 ( 0.00%) self.buf.push((TokenTree::Token(glued), joint)); . return; . } . } . } 239,355 ( 0.01%) self.buf.push((tree, joint)) 390,072 ( 0.02%) } . . fn into_token_stream(self) -> TokenStream { 69,345 ( 0.00%) TokenStream::new(self.buf) . } . } 179,474 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/alloc/src/collections/vec_deque/mod.rs -------------------------------------------------------------------------------- Ir -- line 126 ---------------------------------------- . self.extend(remainder.iter().cloned()); . } . } . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . unsafe impl<#[may_dangle] T, A: Allocator> Drop for VecDeque { 4,095 ( 0.00%) fn drop(&mut self) { . /// Runs the destructor for all items in the slice when it gets dropped (normally or . /// during unwinding). . struct Dropper<'a, T>(&'a mut [T]); . . impl<'a, T> Drop for Dropper<'a, T> { . fn drop(&mut self) { . unsafe { . ptr::drop_in_place(self.0); -- line 142 ---------------------------------------- -- line 146 ---------------------------------------- . . let (front, back) = self.as_mut_slices(); . unsafe { . let _back_dropper = Dropper(back); . // use drop for [T] . ptr::drop_in_place(front); . } . // RawVec handles deallocation 4,680 ( 0.00%) } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl Default for VecDeque { . /// Creates an empty `VecDeque`. . #[inline] . fn default() -> VecDeque { . VecDeque::new() . } . } . . impl VecDeque { . /// Marginally more convenient . #[inline] . fn ptr(&self) -> *mut T { 231,719 ( 0.01%) self.buf.ptr() . } . . /// Marginally more convenient . #[inline] . fn cap(&self) -> usize { . if mem::size_of::() == 0 { . // For zero sized types, we are always at maximum capacity . MAXIMUM_ZST_CAPACITY . } else { 257,727 ( 0.01%) self.buf.capacity() . } . } . . /// Turn ptr into a slice . #[inline] . unsafe fn buffer_as_slice(&self) -> &[T] { . unsafe { slice::from_raw_parts(self.ptr(), self.cap()) } . } -- line 188 ---------------------------------------- -- line 191 ---------------------------------------- . #[inline] . unsafe fn buffer_as_mut_slice(&mut self) -> &mut [T] { . unsafe { slice::from_raw_parts_mut(self.ptr(), self.cap()) } . } . . /// Moves an element out of the buffer . #[inline] . unsafe fn buffer_read(&mut self, off: usize) -> T { 32,228 ( 0.00%) unsafe { ptr::read(self.ptr().add(off)) } . } . . /// Writes an element into the buffer, moving it. . #[inline] . unsafe fn buffer_write(&mut self, off: usize, value: T) { . unsafe { . ptr::write(self.ptr().add(off), value); . } . } . . /// Returns `true` if the buffer is at full capacity. . #[inline] . fn is_full(&self) -> bool { 590,319 ( 0.03%) self.cap() - self.len() == 1 . } . . /// Returns the index in the underlying buffer for a given logical element . /// index. . #[inline] . fn wrap_index(&self, idx: usize) -> usize { . wrap_index(idx, self.cap()) . } -- line 221 ---------------------------------------- -- line 452 ---------------------------------------- . // [o o . o o o o o ] . // T H . // B [. . . o o o o o o o . . . . . . ] . // H T . // [o o o o o . o o ] . // H T . // C [o o o o o . . . . . . . . . o o ] . 184 ( 0.00%) if self.tail <= self.head { . // A . // Nop 48 ( 0.00%) } else if self.head < old_capacity - self.tail { . // B . unsafe { 8 ( 0.00%) self.copy_nonoverlapping(old_capacity, 0, self.head); . } 32 ( 0.00%) self.head += old_capacity; . debug_assert!(self.head > self.tail); . } else { . // C . let new_tail = new_capacity - (old_capacity - self.tail); . unsafe { . self.copy_nonoverlapping(new_tail, self.tail, old_capacity - self.tail); . } . self.tail = new_tail; -- line 476 ---------------------------------------- -- line 507 ---------------------------------------- . /// use std::collections::VecDeque; . /// . /// let vector: VecDeque = VecDeque::with_capacity(10); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[must_use] . pub fn with_capacity(capacity: usize) -> VecDeque { 1,428 ( 0.00%) Self::with_capacity_in(capacity, Global) . } . } . . impl VecDeque { . /// Creates an empty `VecDeque`. . /// . /// # Examples . /// -- line 523 ---------------------------------------- -- line 524 ---------------------------------------- . /// ``` . /// use std::collections::VecDeque; . /// . /// let vector: VecDeque = VecDeque::new(); . /// ``` . #[inline] . #[unstable(feature = "allocator_api", issue = "32838")] . pub fn new_in(alloc: A) -> VecDeque { 726 ( 0.00%) VecDeque::with_capacity_in(INITIAL_CAPACITY, alloc) . } . . /// Creates an empty `VecDeque` with space for at least `capacity` elements. . /// . /// # Examples . /// . /// ``` . /// use std::collections::VecDeque; . /// . /// let vector: VecDeque = VecDeque::with_capacity(10); . /// ``` . #[unstable(feature = "allocator_api", issue = "32838")] 4,308 ( 0.00%) pub fn with_capacity_in(capacity: usize, alloc: A) -> VecDeque { 2,250 ( 0.00%) assert!(capacity < 1_usize << usize::BITS - 1, "capacity overflow"); . // +1 since the ringbuffer always leaves one space empty . let cap = cmp::max(capacity + 1, MINIMUM_CAPACITY + 1).next_power_of_two(); . 7,342 ( 0.00%) VecDeque { tail: 0, head: 0, buf: RawVec::with_capacity_in(cap, alloc) } 6,462 ( 0.00%) } . . /// Provides a reference to the element at the given index. . /// . /// Element at index 0 is the front of the queue. . /// . /// # Examples . /// . /// ``` -- line 559 ---------------------------------------- -- line 562 ---------------------------------------- . /// let mut buf = VecDeque::new(); . /// buf.push_back(3); . /// buf.push_back(4); . /// buf.push_back(5); . /// assert_eq!(buf.get(1), Some(&4)); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn get(&self, index: usize) -> Option<&T> { 880,415 ( 0.05%) if index < self.len() { . let idx = self.wrap_add(self.tail, index); . unsafe { Some(&*self.ptr().add(idx)) } . } else { . None . } . } . . /// Provides a mutable reference to the element at the given index. -- line 578 ---------------------------------------- -- line 591 ---------------------------------------- . /// if let Some(elem) = buf.get_mut(1) { . /// *elem = 7; . /// } . /// . /// assert_eq!(buf[1], 7); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn get_mut(&mut self, index: usize) -> Option<&mut T> { 454,496 ( 0.03%) if index < self.len() { . let idx = self.wrap_add(self.tail, index); . unsafe { Some(&mut *self.ptr().add(idx)) } . } else { . None . } . } . . /// Swaps elements at indices `i` and `j`. -- line 607 ---------------------------------------- -- line 694 ---------------------------------------- . /// . /// let mut buf: VecDeque = [1].into(); . /// buf.reserve(10); . /// assert!(buf.capacity() >= 11); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn reserve(&mut self, additional: usize) { . let old_cap = self.cap(); 8 ( 0.00%) let used_cap = self.len() + 1; . let new_cap = used_cap . .checked_add(additional) . .and_then(|needed_cap| needed_cap.checked_next_power_of_two()) . .expect("capacity overflow"); . 16 ( 0.00%) if new_cap > old_cap { 24 ( 0.00%) self.buf.reserve_exact(used_cap, new_cap - used_cap); . unsafe { . self.handle_capacity_increase(old_cap); . } . } . } . . /// Tries to reserve the minimum capacity for exactly `additional` more elements to . /// be inserted in the given `VecDeque`. After calling `try_reserve_exact`, -- line 717 ---------------------------------------- -- line 924 ---------------------------------------- . /// buf.push_back(5); . /// buf.push_back(10); . /// buf.push_back(15); . /// assert_eq!(buf, [5, 10, 15]); . /// buf.truncate(1); . /// assert_eq!(buf, [5]); . /// ``` . #[stable(feature = "deque_extras", since = "1.16.0")] 88 ( 0.00%) pub fn truncate(&mut self, len: usize) { . /// Runs the destructor for all items in the slice when it gets dropped (normally or . /// during unwinding). . struct Dropper<'a, T>(&'a mut [T]); . . impl<'a, T> Drop for Dropper<'a, T> { . fn drop(&mut self) { . unsafe { . ptr::drop_in_place(self.0); -- line 940 ---------------------------------------- -- line 945 ---------------------------------------- . // Safe because: . // . // * Any slice passed to `drop_in_place` is valid; the second case has . // `len <= front.len()` and returning on `len > self.len()` ensures . // `begin <= back.len()` in the first case . // * The head of the VecDeque is moved before calling `drop_in_place`, . // so no value is dropped twice if `drop_in_place` panics . unsafe { 22 ( 0.00%) if len > self.len() { . return; . } . let num_dropped = self.len() - len; . let (front, back) = self.as_mut_slices(); 22 ( 0.00%) if len > front.len() { . let begin = len - front.len(); . let drop_back = back.get_unchecked_mut(begin..) as *mut _; . self.head = self.wrap_sub(self.head, num_dropped); . ptr::drop_in_place(drop_back); . } else { . let drop_back = back as *mut _; . let drop_front = front.get_unchecked_mut(len..) as *mut _; 11 ( 0.00%) self.head = self.wrap_sub(self.head, num_dropped); . . // Make sure the second half is dropped even when a destructor . // in the first one panics. . let _back_dropper = Dropper(&mut *drop_back); . ptr::drop_in_place(drop_front); . } . } 88 ( 0.00%) } . . /// Returns a reference to the underlying allocator. . #[unstable(feature = "allocator_api", issue = "32838")] . #[inline] . pub fn allocator(&self) -> &A { . self.buf.allocator() . } . -- line 982 ---------------------------------------- -- line 1085 ---------------------------------------- . /// vector.as_mut_slices().0[0] = 42; . /// vector.as_mut_slices().1[0] = 24; . /// assert_eq!(vector.as_slices(), (&[42, 10][..], &[24, 1][..])); . /// ``` . #[inline] . #[stable(feature = "deque_extras_15", since = "1.5.0")] . pub fn as_mut_slices(&mut self) -> (&mut [T], &mut [T]) { . unsafe { 1,937 ( 0.00%) let head = self.head; 1,937 ( 0.00%) let tail = self.tail; 2,080 ( 0.00%) let buf = self.buffer_as_mut_slice(); . RingSlices::ring_slices(buf, head, tail) . } . } . . /// Returns the number of elements in the `VecDeque`. . /// . /// # Examples . /// -- line 1103 ---------------------------------------- -- line 1106 ---------------------------------------- . /// . /// let mut v = VecDeque::new(); . /// assert_eq!(v.len(), 0); . /// v.push_back(1); . /// assert_eq!(v.len(), 1); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn len(&self) -> usize { 397,402 ( 0.02%) count(self.tail, self.head, self.cap()) . } . . /// Returns `true` if the `VecDeque` is empty. . /// . /// # Examples . /// . /// ``` . /// use std::collections::VecDeque; -- line 1122 ---------------------------------------- -- line 1123 ---------------------------------------- . /// . /// let mut v = VecDeque::new(); . /// assert!(v.is_empty()); . /// v.push_front(1); . /// assert!(!v.is_empty()); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn is_empty(&self) -> bool { 790,518 ( 0.05%) self.tail == self.head . } . . fn range_tail_head(&self, range: R) -> (usize, usize) . where . R: RangeBounds, . { . let Range { start, end } = slice::range(range, ..self.len()); . let tail = self.wrap_add(self.tail, start); -- line 1139 ---------------------------------------- -- line 1307 ---------------------------------------- . /// let mut v = VecDeque::new(); . /// v.push_back(1); . /// v.clear(); . /// assert!(v.is_empty()); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[inline] . pub fn clear(&mut self) { 22 ( 0.00%) self.truncate(0); . } . . /// Returns `true` if the `VecDeque` contains an element equal to the . /// given value. . /// . /// # Examples . /// . /// ``` -- line 1323 ---------------------------------------- -- line 1396 ---------------------------------------- . /// assert_eq!(d.back(), None); . /// . /// d.push_back(1); . /// d.push_back(2); . /// assert_eq!(d.back(), Some(&2)); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn back(&self) -> Option<&T> { 16,169 ( 0.00%) self.get(self.len().wrapping_sub(1)) . } . . /// Provides a mutable reference to the back element, or `None` if the . /// `VecDeque` is empty. . /// . /// # Examples . /// . /// ``` -- line 1412 ---------------------------------------- -- line 1441 ---------------------------------------- . /// d.push_back(2); . /// . /// assert_eq!(d.pop_front(), Some(1)); . /// assert_eq!(d.pop_front(), Some(2)); . /// assert_eq!(d.pop_front(), None); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn pop_front(&mut self) -> Option { 143,316 ( 0.01%) if self.is_empty() { . None . } else { . let tail = self.tail; 255,579 ( 0.01%) self.tail = self.wrap_add(self.tail, 1); 10,746 ( 0.00%) unsafe { Some(self.buffer_read(tail)) } . } . } . . /// Removes the last element from the `VecDeque` and returns it, or `None` if . /// it is empty. . /// . /// # Examples . /// -- line 1462 ---------------------------------------- -- line 1466 ---------------------------------------- . /// let mut buf = VecDeque::new(); . /// assert_eq!(buf.pop_back(), None); . /// buf.push_back(1); . /// buf.push_back(3); . /// assert_eq!(buf.pop_back(), Some(3)); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn pop_back(&mut self) -> Option { 67,807 ( 0.00%) if self.is_empty() { . None . } else { 108,087 ( 0.01%) self.head = self.wrap_sub(self.head, 1); . let head = self.head; . unsafe { Some(self.buffer_read(head)) } . } . } . . /// Prepends an element to the `VecDeque`. . /// . /// # Examples -- line 1485 ---------------------------------------- -- line 1513 ---------------------------------------- . /// use std::collections::VecDeque; . /// . /// let mut buf = VecDeque::new(); . /// buf.push_back(1); . /// buf.push_back(3); . /// assert_eq!(3, *buf.back().unwrap()); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] 459,608 ( 0.03%) pub fn push_back(&mut self, value: T) { 590,289 ( 0.03%) if self.is_full() { 68 ( 0.00%) self.grow(); . } . 38 ( 0.00%) let head = self.head; 196,796 ( 0.01%) self.head = self.wrap_add(self.head, 1); 81,856 ( 0.00%) unsafe { self.buffer_write(head, value) } 459,608 ( 0.03%) } . . #[inline] . fn is_contiguous(&self) -> bool { . // FIXME: Should we consider `head == 0` to mean . // that `self` is contiguous? . self.tail <= self.head . } . -- line 1537 ---------------------------------------- -- line 2209 ---------------------------------------- . self.truncate(idx); . } . } . . // Double the buffer size. This method is inline(never), so we expect it to only . // be called in cold paths. . // This may panic or abort . #[inline(never)] 228 ( 0.00%) fn grow(&mut self) { . // Extend or possibly remove this assertion when valid use-cases for growing the . // buffer without it being full emerge . debug_assert!(self.is_full()); . let old_cap = self.cap(); 114 ( 0.00%) self.buf.reserve_exact(old_cap, old_cap); 190 ( 0.00%) assert!(self.cap() == old_cap * 2); . unsafe { . self.handle_capacity_increase(old_cap); . } . debug_assert!(!self.is_full()); 228 ( 0.00%) } . . /// Modifies the `VecDeque` in-place so that `len()` is equal to `new_len`, . /// either by removing excess elements from the back or by appending . /// elements generated by calling `generator` to the back. . /// . /// # Examples . /// . /// ``` -- line 2236 ---------------------------------------- -- line 2751 ---------------------------------------- . } . } . . /// Returns the index in the underlying buffer for a given logical element index. . #[inline] . fn wrap_index(index: usize, size: usize) -> usize { . // size is always a power of 2 . debug_assert!(size.is_power_of_two()); 1,041,147 ( 0.06%) index & (size - 1) . } . . /// Calculate the number of elements left to be read in the buffer . #[inline] . fn count(tail: usize, head: usize, size: usize) -> usize { . // size is always a power of 2 1,690,670 ( 0.10%) (head.wrapping_sub(tail)) & (size - 1) . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl PartialEq for VecDeque { . fn eq(&self, other: &Self) -> bool { . if self.len() != other.len() { . return false; . } -- line 2774 ---------------------------------------- -- line 2902 ---------------------------------------- . . fn into_iter(self) -> IterMut<'a, T> { . self.iter_mut() . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl Extend for VecDeque { 728 ( 0.00%) fn extend>(&mut self, iter: I) { . // This function should be the moral equivalent of: . // . // for item in iter.into_iter() { . // self.push_back(item); . // } . let mut iter = iter.into_iter(); . while let Some(element) = iter.next() { 1,303 ( 0.00%) if self.len() == self.capacity() { . let (lower, _) = iter.size_hint(); . self.reserve(lower.saturating_add(1)); . } . . let head = self.head; 295 ( 0.00%) self.head = self.wrap_add(self.head, 1); . unsafe { 96 ( 0.00%) self.buffer_write(head, element); . } . } 832 ( 0.00%) } . . #[inline] . fn extend_one(&mut self, elem: T) { . self.push_back(elem); . } . . #[inline] . fn extend_reserve(&mut self, additional: usize) { -- line 2937 ---------------------------------------- 261,832 ( 0.02%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_span/src/caching_source_map_view.rs -------------------------------------------------------------------------------- Ir -- line 27 ---------------------------------------- . impl CacheEntry { . #[inline] . fn update( . &mut self, . new_file_and_idx: Option<(Lrc, usize)>, . pos: BytePos, . time_stamp: usize, . ) { 8,992 ( 0.00%) if let Some((file, file_idx)) = new_file_and_idx { 2,167 ( 0.00%) self.file = file; 3,068 ( 0.00%) self.file_index = file_idx; . } . 4,003 ( 0.00%) let line_index = self.file.lookup_line(pos).unwrap(); . let line_bounds = self.file.line_bounds(line_index); 11,496 ( 0.00%) self.line_number = line_index + 1; 15,833 ( 0.00%) self.line = line_bounds; . self.touch(time_stamp); . } . . #[inline] . fn touch(&mut self, time_stamp: usize) { 135,166 ( 0.01%) self.time_stamp = time_stamp; . } . } . . #[derive(Clone)] . pub struct CachingSourceMapView<'sm> { . source_map: &'sm SourceMap, . line_cache: [CacheEntry; 3], . time_stamp: usize, . } . . impl<'sm> CachingSourceMapView<'sm> { 1,676 ( 0.00%) pub fn new(source_map: &'sm SourceMap) -> CachingSourceMapView<'sm> { . let files = source_map.files(); 838 ( 0.00%) let first_file = files[0].clone(); . let entry = CacheEntry { . time_stamp: 0, . line_number: 0, . line: BytePos(0)..BytePos(0), . file: first_file, . file_index: 0, . }; . 4,190 ( 0.00%) CachingSourceMapView { . source_map, 5,866 ( 0.00%) line_cache: [entry.clone(), entry.clone(), entry], . time_stamp: 0, . } 3,352 ( 0.00%) } . . pub fn byte_pos_to_line_and_col( . &mut self, . pos: BytePos, . ) -> Option<(Lrc, usize, BytePos)> { . self.time_stamp += 1; . . // Check if the position is in one of the cached lines -- line 85 ---------------------------------------- -- line 106 ---------------------------------------- . }; . . let cache_entry = &mut self.line_cache[oldest]; . cache_entry.update(new_file_and_idx, pos, self.time_stamp); . . Some((cache_entry.file.clone(), cache_entry.line_number, pos - cache_entry.line.start)) . } . 491,722 ( 0.03%) pub fn span_data_to_lines_and_cols( . &mut self, . span_data: &SpanData, . ) -> Option<(Lrc, usize, BytePos, usize, BytePos)> { 280,984 ( 0.02%) self.time_stamp += 1; . . // Check if lo and hi are in the cached lines. 70,246 ( 0.00%) let lo_cache_idx = self.cache_entry_index(span_data.lo); 70,246 ( 0.00%) let hi_cache_idx = self.cache_entry_index(span_data.hi); . 129,956 ( 0.01%) if lo_cache_idx != -1 && hi_cache_idx != -1 { . // Cache hit for span lo and hi. Check if they belong to the same file. . let result = { 129,840 ( 0.01%) let lo = &self.line_cache[lo_cache_idx as usize]; . let hi = &self.line_cache[hi_cache_idx as usize]; . 389,520 ( 0.02%) if lo.file_index != hi.file_index { . return None; . } . . ( 129,840 ( 0.01%) lo.file.clone(), . lo.line_number, . span_data.lo - lo.line.start, 64,920 ( 0.00%) hi.line_number, . span_data.hi - hi.line.start, . ) . }; . 64,920 ( 0.00%) self.line_cache[lo_cache_idx as usize].touch(self.time_stamp); 64,920 ( 0.00%) self.line_cache[hi_cache_idx as usize].touch(self.time_stamp); . 259,680 ( 0.02%) return Some(result); . } . . // No cache hit or cache hit for only one of span lo and hi. 10,536 ( 0.00%) let oldest = if lo_cache_idx != -1 || hi_cache_idx != -1 { . let avoid_idx = if lo_cache_idx != -1 { lo_cache_idx } else { hi_cache_idx }; . self.oldest_cache_entry_index_avoid(avoid_idx as usize) . } else { . self.oldest_cache_entry_index() . }; . . // If the entry doesn't point to the correct file, get the new file and index. . // Return early if the file containing beginning of span doesn't contain end of span. 42,584 ( 0.00%) let new_file_and_idx = if !file_contains(&self.line_cache[oldest].file, span_data.lo) { 6,615 ( 0.00%) let new_file_and_idx = self.file_for_position(span_data.lo)?; 7,938 ( 0.00%) if !file_contains(&new_file_and_idx.0, span_data.hi) { . return None; . } . 5,292 ( 0.00%) Some(new_file_and_idx) . } else { . let file = &self.line_cache[oldest].file; 12,009 ( 0.00%) if !file_contains(&file, span_data.hi) { . return None; . } . 12,009 ( 0.00%) None . }; . . // Update the cache entries. 26,630 ( 0.00%) let (lo_idx, hi_idx) = match (lo_cache_idx, hi_cache_idx) { . // Oldest cache entry is for span_data.lo line. . (-1, -1) => { . let lo = &mut self.line_cache[oldest]; . lo.update(new_file_and_idx, span_data.lo, self.time_stamp); . 10,305 ( 0.00%) if !lo.line.contains(&span_data.hi) { . let new_file_and_idx = Some((lo.file.clone(), lo.file_index)); . let next_oldest = self.oldest_cache_entry_index_avoid(oldest); . let hi = &mut self.line_cache[next_oldest]; . hi.update(new_file_and_idx, span_data.hi, self.time_stamp); . (oldest, next_oldest) . } else { . (oldest, oldest) . } . } . // Oldest cache entry is for span_data.lo line. . (-1, _) => { . let lo = &mut self.line_cache[oldest]; . lo.update(new_file_and_idx, span_data.lo, self.time_stamp); 116 ( 0.00%) let hi = &mut self.line_cache[hi_cache_idx as usize]; 174 ( 0.00%) hi.touch(self.time_stamp); . (oldest, hi_cache_idx as usize) . } . // Oldest cache entry is for span_data.hi line. . (_, -1) => { . let hi = &mut self.line_cache[oldest]; 1,833 ( 0.00%) hi.update(new_file_and_idx, span_data.hi, self.time_stamp); 3,666 ( 0.00%) let lo = &mut self.line_cache[lo_cache_idx as usize]; 7,332 ( 0.00%) lo.touch(self.time_stamp); . (lo_cache_idx as usize, oldest) . } . _ => { . panic!(); . } . }; . . let lo = &self.line_cache[lo_idx]; . let hi = &self.line_cache[hi_idx]; . . // Span lo and hi may equal line end when last line doesn't . // end in newline, hence the inclusive upper bounds below. 10,652 ( 0.00%) assert!(span_data.lo >= lo.line.start); 5,326 ( 0.00%) assert!(span_data.lo <= lo.line.end); 10,652 ( 0.00%) assert!(span_data.hi >= hi.line.start); 5,326 ( 0.00%) assert!(span_data.hi <= hi.line.end); 26,630 ( 0.00%) assert!(lo.file.contains(span_data.lo)); 15,978 ( 0.00%) assert!(lo.file.contains(span_data.hi)); 15,978 ( 0.00%) assert_eq!(lo.file_index, hi.file_index); . 15,978 ( 0.00%) Some(( 5,326 ( 0.00%) lo.file.clone(), . lo.line_number, . span_data.lo - lo.line.start, 5,326 ( 0.00%) hi.line_number, . span_data.hi - hi.line.start, . )) 632,214 ( 0.04%) } . . fn cache_entry_index(&self, pos: BytePos) -> isize { . for (idx, cache_entry) in self.line_cache.iter().enumerate() { 787,544 ( 0.05%) if cache_entry.line.contains(&pos) { . return idx as isize; . } . } . . -1 . } . . fn oldest_cache_entry_index(&self) -> usize { . let mut oldest = 0; . . for idx in 1..self.line_cache.len() { 20,610 ( 0.00%) if self.line_cache[idx].time_stamp < self.line_cache[oldest].time_stamp { . oldest = idx; . } . } . . oldest . } . . fn oldest_cache_entry_index_avoid(&self, avoid_idx: usize) -> usize { . let mut oldest = if avoid_idx != 0 { 0 } else { 1 }; . . for idx in 0..self.line_cache.len() { 13,488 ( 0.00%) if idx != avoid_idx 5,624 ( 0.00%) && self.line_cache[idx].time_stamp < self.line_cache[oldest].time_stamp . { . oldest = idx; . } . } . . oldest . } . 6,615 ( 0.00%) fn file_for_position(&self, pos: BytePos) -> Option<(Lrc, usize)> { 1,323 ( 0.00%) if !self.source_map.files().is_empty() { 2,646 ( 0.00%) let file_idx = self.source_map.lookup_source_file_idx(pos); . let file = &self.source_map.files()[file_idx]; . 10,584 ( 0.00%) if file_contains(file, pos) { . return Some((file.clone(), file_idx)); . } . } . . None 6,615 ( 0.00%) } . } . . #[inline] . fn file_contains(file: &SourceFile, pos: BytePos) -> bool { . // `SourceMap::lookup_source_file_idx` and `SourceFile::contains` both consider the position . // one past the end of a file to belong to it. Normally, that's what we want. But for the . // purposes of converting a byte position to a line and column number, we can't come up with a . // line and column number if the file is empty, because an empty file doesn't contain any -- line 290 ---------------------------------------- 803,934 ( 0.05%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_mir_build/src/build/expr/as_operand.rs -------------------------------------------------------------------------------- Ir -- line 15 ---------------------------------------- . /// please do *not* return it from functions to avoid bad . /// miscompiles. . crate fn as_local_operand( . &mut self, . block: BasicBlock, . expr: &Expr<'tcx>, . ) -> BlockAnd> { . let local_scope = self.local_scope(); 5,242 ( 0.00%) self.as_operand(block, Some(local_scope), expr, None) . } . . /// Returns an operand suitable for use until the end of the current scope expression and . /// suitable also to be passed as function arguments. . /// . /// The operand returned from this function will *not be valid* after an ExprKind::Scope is . /// passed, so please do *not* return it from functions to avoid bad miscompiles. Returns an . /// operand suitable for use as a call argument. This is almost always equivalent to -- line 31 ---------------------------------------- -- line 72 ---------------------------------------- . /// . /// See #68034 for more details. . crate fn as_local_call_operand( . &mut self, . block: BasicBlock, . expr: &Expr<'tcx>, . ) -> BlockAnd> { . let local_scope = self.local_scope(); 4,400 ( 0.00%) self.as_call_operand(block, Some(local_scope), expr) . } . . /// Compile `expr` into a value that can be used as an operand. . /// If `expr` is a place like `x`, this will introduce a . /// temporary `tmp = x`, so that we capture the value of `x` at . /// this time. . /// . /// If we end up needing to create a temporary, then we will use -- line 88 ---------------------------------------- -- line 89 ---------------------------------------- . /// `local_info` as its `LocalInfo`, unless `as_temporary` . /// has already assigned it a non-`None` `LocalInfo`. . /// Normally, you should use `None` for `local_info` . /// . /// The operand is known to be live until the end of `scope`. . /// . /// Like `as_local_call_operand`, except that the argument will . /// not be valid once `scope` ends. 469,160 ( 0.03%) crate fn as_operand( . &mut self, . mut block: BasicBlock, . scope: Option, . expr: &Expr<'tcx>, . local_info: Option>>, . ) -> BlockAnd> { . debug!("as_operand(block={:?}, expr={:?} local_info={:?})", block, expr, local_info); . let this = self; . 299,781 ( 0.02%) if let ExprKind::Scope { region_scope, lint_level, value } = expr.kind { 45,438 ( 0.00%) let source_info = this.source_info(expr.span); . let region_scope = (region_scope, source_info); . return this.in_scope(region_scope, lint_level, |this| { 295,347 ( 0.02%) this.as_operand(block, scope, &this.thir[value], local_info) . }); . } . . let category = Category::of(&expr.kind).unwrap(); . debug!("as_operand: category={:?} for={:?}", category, expr.kind); . match category { . Category::Constant => { 36,603 ( 0.00%) let constant = this.as_constant(expr); . block.and(Operand::Constant(Box::new(constant))) . } . Category::Place | Category::Rvalue(..) => { . let operand = unpack!(block = this.as_temp(block, scope, expr, Mutability::Mut)); 23,992 ( 0.00%) if this.local_decls[operand].local_info.is_none() { 23,992 ( 0.00%) this.local_decls[operand].local_info = local_info; . } 11,996 ( 0.00%) block.and(Operand::Move(Place::from(operand))) . } . } 434,240 ( 0.03%) } . 22,880 ( 0.00%) crate fn as_call_operand( . &mut self, . mut block: BasicBlock, . scope: Option, . expr: &Expr<'tcx>, . ) -> BlockAnd> { . debug!("as_call_operand(block={:?}, expr={:?})", block, expr); . let this = self; . 11,440 ( 0.00%) if let ExprKind::Scope { region_scope, lint_level, value } = expr.kind { 1,760 ( 0.00%) let source_info = this.source_info(expr.span); . let region_scope = (region_scope, source_info); . return this.in_scope(region_scope, lint_level, |this| { 9,680 ( 0.00%) this.as_call_operand(block, scope, &this.thir[value]) . }); . } . 880 ( 0.00%) let tcx = this.tcx; . 3,520 ( 0.00%) if tcx.features().unsized_fn_params { . let ty = expr.ty; . let span = expr.span; . let param_env = this.param_env; . . if !ty.is_sized(tcx.at(span), param_env) { . // !sized means !copy, so this is an unsized move . assert!(!ty.is_copy_modulo_regions(tcx.at(span), param_env)); . -- line 159 ---------------------------------------- -- line 171 ---------------------------------------- . projection: tcx.intern_place_elems(&[PlaceElem::Deref]), . }; . . return block.and(Operand::Move(place)); . } . } . } . 7,920 ( 0.00%) this.as_operand(block, scope, expr, None) 14,080 ( 0.00%) } . } 252,913 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_ast_pretty/src/pp.rs -------------------------------------------------------------------------------- Ir -- line 166 ---------------------------------------- . String(Cow<'static, str>), . Break(BreakToken), . Begin(BeginToken), . End, . } . . impl Token { . pub fn is_hardbreak_tok(&self) -> bool { 32,308 ( 0.00%) matches!(self, Token::Break(BreakToken { offset: 0, blank_space: SIZE_INFINITY })) . } . } . . #[derive(Copy, Clone)] . enum PrintFrame { . Fits, . Broken { offset: isize, breaks: Breaks }, . } -- line 182 ---------------------------------------- -- line 213 ---------------------------------------- . . #[derive(Clone)] . struct BufEntry { . token: Token, . size: isize, . } . . impl Printer { 40 ( 0.00%) pub fn new() -> Self { . let linewidth = 78; 5,649 ( 0.00%) Printer { . out: String::new(), . margin: linewidth as isize, . space: linewidth as isize, . buf: RingBuffer::new(), . left_total: 0, . right_total: 0, . scan_stack: VecDeque::new(), . print_stack: Vec::new(), . pending_indentation: 0, . last_printed: None, . } 50 ( 0.00%) } . . pub fn last_token(&self) -> Option<&Token> { . self.last_token_still_buffered().or_else(|| self.last_printed.as_ref()) . } . . pub fn last_token_still_buffered(&self) -> Option<&Token> { . self.buf.last().map(|last| &last.token) . } . . /// Be very careful with this! . pub fn replace_last_token_still_buffered(&mut self, token: Token) { . self.buf.last_mut().unwrap().token = token; . } . . fn scan_eof(&mut self) { 222 ( 0.00%) if !self.scan_stack.is_empty() { 22 ( 0.00%) self.check_stack(0); 22 ( 0.00%) self.advance_left(); . } . } . . fn scan_begin(&mut self, token: BeginToken) { 27,528 ( 0.00%) if self.scan_stack.is_empty() { 22 ( 0.00%) self.left_total = 1; . self.right_total = 1; . self.buf.clear(); . } 110,112 ( 0.01%) let right = self.buf.push(BufEntry { token: Token::Begin(token), size: -self.right_total }); . self.scan_stack.push_back(right); . } . . fn scan_end(&mut self) { 27,528 ( 0.00%) if self.scan_stack.is_empty() { . self.print_end(); . } else { . let right = self.buf.push(BufEntry { token: Token::End, size: -1 }); . self.scan_stack.push_back(right); . } . } . . fn scan_break(&mut self, token: BreakToken) { 16,158 ( 0.00%) if self.scan_stack.is_empty() { . self.left_total = 1; . self.right_total = 1; . self.buf.clear(); . } else { 32,316 ( 0.00%) self.check_stack(0); . } 64,632 ( 0.00%) let right = self.buf.push(BufEntry { token: Token::Break(token), size: -self.right_total }); . self.scan_stack.push_back(right); 48,474 ( 0.00%) self.right_total += token.blank_space; . } . 395,091 ( 0.02%) fn scan_string(&mut self, string: Cow<'static, str>) { 43,899 ( 0.00%) if self.scan_stack.is_empty() { . self.print_string(&string); . } else { . let len = string.len() as isize; 43,688 ( 0.00%) self.buf.push(BufEntry { token: Token::String(string), size: len }); 131,064 ( 0.01%) self.right_total += len; . self.check_stream(); . } 349,504 ( 0.02%) } . . fn check_stream(&mut self) { 208,632 ( 0.01%) while self.right_total - self.left_total > self.space { 20,328 ( 0.00%) if *self.scan_stack.front().unwrap() == self.buf.index_of_first() { . self.scan_stack.pop_front().unwrap(); 3,407 ( 0.00%) self.buf.first_mut().unwrap().size = SIZE_INFINITY; . } 13,552 ( 0.00%) self.advance_left(); 6,776 ( 0.00%) if self.buf.is_empty() { . break; . } . } . } . 230,281 ( 0.01%) fn advance_left(&mut self) { 243,356 ( 0.01%) while self.buf.first().unwrap().size >= 0 { 344,706 ( 0.02%) let left = self.buf.pop_first().unwrap(); . . match &left.token { . Token::String(string) => { 131,064 ( 0.01%) self.left_total += string.len() as isize; . self.print_string(string); . } . Token::Break(token) => { 48,474 ( 0.00%) self.left_total += token.blank_space; . self.print_break(*token, left.size); . } 90 ( 0.00%) Token::Begin(token) => self.print_begin(*token, left.size), . Token::End => self.print_end(), . } . 919,216 ( 0.05%) self.last_printed = Some(left.token); . 114,902 ( 0.01%) if self.buf.is_empty() { . break; . } . } 54,296 ( 0.00%) } . 145,521 ( 0.01%) fn check_stack(&mut self, mut depth: usize) { 150,337 ( 0.01%) while let Some(&index) = self.scan_stack.back() { . let mut entry = &mut self.buf[index]; 301,052 ( 0.02%) match entry.token { . Token::Begin(_) => { 66,338 ( 0.00%) if depth == 0 { . break; . } . self.scan_stack.pop_back().unwrap(); 82,494 ( 0.00%) entry.size += self.right_total; 27,498 ( 0.00%) depth -= 1; . } . Token::End => { . // paper says + not =, but that makes no sense. . self.scan_stack.pop_back().unwrap(); 27,527 ( 0.00%) entry.size = 1; 55,054 ( 0.00%) depth += 1; . } . _ => { . self.scan_stack.pop_back().unwrap(); 38,346 ( 0.00%) entry.size += self.right_total; 32,681 ( 0.00%) if depth == 0 { . break; . } . } . } . } 129,352 ( 0.01%) } . . fn get_top(&self) -> PrintFrame { 48,474 ( 0.00%) *self . .print_stack . .last() . .unwrap_or(&PrintFrame::Broken { offset: 0, breaks: Breaks::Inconsistent }) . } . . fn print_begin(&mut self, token: BeginToken, size: isize) { 82,584 ( 0.00%) if size > self.space { 150 ( 0.00%) let col = self.margin - self.space + token.offset; . self.print_stack.push(PrintFrame::Broken { offset: col, breaks: token.breaks }); . } else { . self.print_stack.push(PrintFrame::Fits); . } . } . . fn print_end(&mut self) { . self.print_stack.pop().unwrap(); . } . . fn print_break(&mut self, token: BreakToken, size: isize) { . let break_offset = 54,948 ( 0.00%) match self.get_top() { . PrintFrame::Fits => None, . PrintFrame::Broken { offset, breaks: Breaks::Consistent } => Some(offset), . PrintFrame::Broken { offset, breaks: Breaks::Inconsistent } => { . if size > self.space { Some(offset) } else { None } . } . }; . if let Some(offset) = break_offset { . self.out.push('\n'); 10,128 ( 0.00%) self.pending_indentation = offset + token.offset; 13,504 ( 0.00%) self.space = self.margin - (offset + token.offset); . } else { 38,346 ( 0.00%) self.pending_indentation += token.blank_space; 51,128 ( 0.00%) self.space -= token.blank_space; . } . } . . fn print_string(&mut self, string: &str) { . // Write the pending indent. A more concise way of doing this would be: . // . // write!(self.out, "{: >n$}", "", n = self.pending_indentation as usize)?; . // . // But that is significantly slower. This code is sufficiently hot, and indents can get . // sufficiently large, that the difference is significant on some workloads. 43,899 ( 0.00%) self.out.reserve(self.pending_indentation as usize); 9 ( 0.00%) self.out.extend(iter::repeat(' ').take(self.pending_indentation as usize)); 43,899 ( 0.00%) self.pending_indentation = 0; . . self.out.push_str(string); 219,284 ( 0.01%) self.space -= string.len() as isize; . } . . // Convenience functions to talk to the printer. . . /// "raw box" 45,376 ( 0.00%) pub fn rbox(&mut self, indent: usize, breaks: Breaks) { . self.scan_begin(BeginToken { offset: indent as isize, breaks }) 34,032 ( 0.00%) } . . /// Inconsistent breaking box 131,136 ( 0.01%) pub fn ibox(&mut self, indent: usize) { . self.rbox(indent, Breaks::Inconsistent) 109,280 ( 0.01%) } . . /// Consistent breaking box . pub fn cbox(&mut self, indent: usize) { . self.rbox(indent, Breaks::Consistent) . } . 129,264 ( 0.01%) pub fn break_offset(&mut self, n: usize, off: isize) { . self.scan_break(BreakToken { offset: off, blank_space: n as isize }) 96,948 ( 0.01%) } . 110,112 ( 0.01%) pub fn end(&mut self) { . self.scan_end() 110,112 ( 0.01%) } . 1,110 ( 0.00%) pub fn eof(mut self) -> String { . self.scan_eof(); 888 ( 0.00%) self.out 1,110 ( 0.00%) } . . pub fn word>>(&mut self, wrd: S) { . let string = wrd.into(); 305,855 ( 0.02%) self.scan_string(string) . } . . fn spaces(&mut self, n: usize) { 64,634 ( 0.00%) self.break_offset(n, 0) . } . . crate fn zerobreak(&mut self) { . self.spaces(0) . } . . pub fn space(&mut self) { . self.spaces(1) . } . . pub fn hardbreak(&mut self) { . self.spaces(SIZE_INFINITY as usize) . } . . pub fn is_beginning_of_line(&self) -> bool { 32,308 ( 0.00%) match self.last_token() { . Some(last_token) => last_token.is_hardbreak_tok(), . None => true, . } . } . . pub fn hardbreak_tok_offset(off: isize) -> Token { . Token::Break(BreakToken { offset: off, blank_space: SIZE_INFINITY }) . } -- line 481 ---------------------------------------- 759,638 ( 0.04%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_parse/src/parser/expr.rs -------------------------------------------------------------------------------- Ir -- line 71 ---------------------------------------- . AlreadyParsed(P), . } . . impl From> for LhsExpr { . /// Converts `Some(attrs)` into `LhsExpr::AttributesParsed(attrs)` . /// and `None` into `LhsExpr::NotYetParsed`. . /// . /// This conversion does not allocate. 14 ( 0.00%) fn from(o: Option) -> Self { 57,372 ( 0.00%) if let Some(attrs) = o { LhsExpr::AttributesParsed(attrs) } else { LhsExpr::NotYetParsed } 14 ( 0.00%) } . } . . impl From> for LhsExpr { . /// Converts the `expr: P` into `LhsExpr::AlreadyParsed(expr)`. . /// . /// This conversion does not allocate. . fn from(expr: P) -> Self { . LhsExpr::AlreadyParsed(expr) -- line 89 ---------------------------------------- -- line 96 ---------------------------------------- . pub fn parse_expr(&mut self) -> PResult<'a, P> { . self.current_closure.take(); . . self.parse_expr_res(Restrictions::empty(), None) . } . . /// Parses an expression, forcing tokens to be collected . pub fn parse_expr_force_collect(&mut self) -> PResult<'a, P> { 12 ( 0.00%) self.collect_tokens_no_attrs(|this| this.parse_expr()) . } . 6 ( 0.00%) pub fn parse_anon_const_expr(&mut self) -> PResult<'a, AnonConst> { . self.parse_expr().map(|value| AnonConst { id: DUMMY_NODE_ID, value }) 6 ( 0.00%) } . 131,760 ( 0.01%) fn parse_expr_catch_underscore(&mut self) -> PResult<'a, P> { 32,940 ( 0.00%) match self.parse_expr() { . Ok(expr) => Ok(expr), . Err(mut err) => match self.token.ident() { . Some((Ident { name: kw::Underscore, .. }, false)) . if self.look_ahead(1, |t| t == &token::Comma) => . { . // Special-case handling of `foo(_, _, _)` . err.emit(); . self.bump(); . Ok(self.mk_expr(self.prev_token.span, ExprKind::Err, AttrVec::new())) . } . _ => Err(err), . }, . } 164,700 ( 0.01%) } . . /// Parses a sequence of expressions delimited by parentheses. . fn parse_paren_expr_seq(&mut self) -> PResult<'a, Vec>> { 1,944 ( 0.00%) self.parse_paren_comma_seq(|p| p.parse_expr_catch_underscore()).map(|(r, _)| r) . } . . /// Parses an expression, subject to the given restrictions. . #[inline] . pub(super) fn parse_expr_res( . &mut self, . r: Restrictions, . already_parsed_attrs: Option, -- line 138 ---------------------------------------- -- line 144 ---------------------------------------- . /// . /// This parses an expression accounting for associativity and precedence of the operators in . /// the expression. . #[inline] . fn parse_assoc_expr( . &mut self, . already_parsed_attrs: Option, . ) -> PResult<'a, P> { 74,463 ( 0.00%) self.parse_assoc_expr_with(0, already_parsed_attrs.into()) . } . . /// Parses an associative expression with operators of at least `min_prec` precedence. 212,040 ( 0.01%) pub(super) fn parse_assoc_expr_with( . &mut self, . min_prec: usize, . lhs: LhsExpr, . ) -> PResult<'a, P> { 117,820 ( 0.01%) let mut lhs = if let LhsExpr::AlreadyParsed(expr) = lhs { 1,076 ( 0.00%) expr . } else { 46,582 ( 0.00%) let attrs = match lhs { 47,452 ( 0.00%) LhsExpr::AttributesParsed(attrs) => Some(attrs), . _ => None, . }; 23,291 ( 0.00%) if [token::DotDot, token::DotDotDot, token::DotDotEq].contains(&self.token.kind) { 40 ( 0.00%) return self.parse_prefix_range_expr(attrs); . } else { 279,372 ( 0.02%) self.parse_prefix_expr(attrs)? . } . }; 47,100 ( 0.00%) let last_type_ascription_set = self.last_type_ascription.is_some(); . . if !self.should_continue_as_assoc_expr(&lhs) { 486 ( 0.00%) self.last_type_ascription = None; . return Ok(lhs); . } . . self.expected_tokens.push(TokenType::Operator); 1,600 ( 0.00%) while let Some(op) = self.check_assoc_op() { . // Adjust the span for interpolated LHS to point to the `$lhs` token . // and not to what it refers to. 2,400 ( 0.00%) let lhs_span = match self.prev_token.kind { . TokenKind::Interpolated(..) => self.prev_token.span, . _ => lhs.span, . }; . 800 ( 0.00%) let cur_op_span = self.token.span; 3,200 ( 0.00%) let restrictions = if op.node.is_assign_like() { . self.restrictions & Restrictions::NO_STRUCT_LITERAL . } else { . self.restrictions . }; 1,200 ( 0.00%) let prec = op.node.precedence(); 800 ( 0.00%) if prec < min_prec { . break; . } . // Check for deprecated `...` syntax 1,440 ( 0.00%) if self.token == token::DotDotDot && op.node == AssocOp::DotDotEq { . self.err_dotdotdot_syntax(self.token.span); . } . 1,440 ( 0.00%) if self.token == token::LArrow { . self.err_larrow_operator(self.token.span); . } . 360 ( 0.00%) self.bump(); 1,440 ( 0.00%) if op.node.is_comparison() { . if let Some(expr) = self.check_no_chained_comparison(&lhs, &op)? { . return Ok(expr); . } . } . . // Look for JS' `===` and `!==` and recover 552 ( 0.00%) if (op.node == AssocOp::Equal || op.node == AssocOp::NotEqual) 192 ( 0.00%) && self.token.kind == token::Eq . && self.prev_token.span.hi() == self.token.span.lo() . { . let sp = op.span.to(self.token.span); . let sugg = match op.node { . AssocOp::Equal => "==", . AssocOp::NotEqual => "!=", . _ => unreachable!(), . }; -- line 226 ---------------------------------------- -- line 231 ---------------------------------------- . sugg.to_string(), . Applicability::MachineApplicable, . ) . .emit(); . self.bump(); . } . . // Look for PHP's `<>` and recover 112 ( 0.00%) if op.node == AssocOp::Less 16 ( 0.00%) && self.token.kind == token::Gt . && self.prev_token.span.hi() == self.token.span.lo() . { . let sp = op.span.to(self.token.span); . self.struct_span_err(sp, "invalid comparison operator `<>`") . .span_suggestion_short( . sp, . "`<>` is not a valid comparison operator, use `!=`", . "!=".to_string(), . Applicability::MachineApplicable, . ) . .emit(); . self.bump(); . } . . // Look for C++'s `<=>` and recover 22 ( 0.00%) if op.node == AssocOp::LessEqual 22 ( 0.00%) && self.token.kind == token::Gt . && self.prev_token.span.hi() == self.token.span.lo() . { . let sp = op.span.to(self.token.span); . self.struct_span_err(sp, "invalid comparison operator `<=>`") . .span_label( . sp, . "`<=>` is not a valid comparison operator, use `std::cmp::Ordering`", . ) . .emit(); . self.bump(); . } . 720 ( 0.00%) let op = op.node; . // Special cases: . if op == AssocOp::As { 130 ( 0.00%) lhs = self.parse_assoc_op_cast(lhs, lhs_span, ExprKind::Cast)?; . continue; . } else if op == AssocOp::Colon { . lhs = self.parse_assoc_op_ascribe(lhs, lhs_span)?; . continue; . } else if op == AssocOp::DotDot || op == AssocOp::DotDotEq { . // If we didn’t have to handle `x..`/`x..=`, it would be pretty easy to . // generalise it to the Fixity::None code. 52 ( 0.00%) lhs = self.parse_range_expr(prec, lhs, op, cur_op_span)?; . break; . } . 321 ( 0.00%) let fixity = op.fixity(); 963 ( 0.00%) let prec_adjustment = match fixity { . Fixity::Right => 0, . Fixity::Left => 1, . // We currently have no non-associative operators that are not handled above by . // the special cases. The code is here only for future convenience. . Fixity::None => 1, . }; 642 ( 0.00%) let rhs = self.with_res(restrictions - Restrictions::STMT_EXPR, |this| { 1,605 ( 0.00%) this.parse_assoc_expr_with(prec + prec_adjustment, LhsExpr::NotYetParsed) . })?; . . let span = self.mk_expr_sp(&lhs, lhs_span, rhs.span); 3,036 ( 0.00%) lhs = match op { . AssocOp::Add . | AssocOp::Subtract . | AssocOp::Multiply . | AssocOp::Divide . | AssocOp::Modulus . | AssocOp::LAnd . | AssocOp::LOr . | AssocOp::BitXor -- line 306 ---------------------------------------- -- line 309 ---------------------------------------- . | AssocOp::ShiftLeft . | AssocOp::ShiftRight . | AssocOp::Equal . | AssocOp::Less . | AssocOp::LessEqual . | AssocOp::NotEqual . | AssocOp::Greater . | AssocOp::GreaterEqual => { 392 ( 0.00%) let ast_op = op.to_ast_binop().unwrap(); . let binary = self.mk_binary(source_map::respan(cur_op_span, ast_op), lhs, rhs); . self.mk_expr(span, binary, AttrVec::new()) . } . AssocOp::Assign => { . self.mk_expr(span, ExprKind::Assign(lhs, rhs, cur_op_span), AttrVec::new()) . } . AssocOp::AssignOp(k) => { . let aop = match k { -- line 325 ---------------------------------------- -- line 337 ---------------------------------------- . let aopexpr = self.mk_assign_op(source_map::respan(cur_op_span, aop), lhs, rhs); . self.mk_expr(span, aopexpr, AttrVec::new()) . } . AssocOp::As | AssocOp::Colon | AssocOp::DotDot | AssocOp::DotDotEq => { . self.span_bug(span, "AssocOp should have been handled by special case") . } . }; . 642 ( 0.00%) if let Fixity::None = fixity { . break; . } . } 23,388 ( 0.00%) if last_type_ascription_set { . self.last_type_ascription = None; . } 46,776 ( 0.00%) Ok(lhs) 400,099 ( 0.02%) } . . fn should_continue_as_assoc_expr(&mut self, lhs: &Expr) -> bool { 165,174 ( 0.01%) match (self.expr_is_complete(lhs), AssocOp::from_token(&self.token)) { . // Semi-statement forms are odd: . // See https://github.com/rust-lang/rust/issues/29071 . (true, None) => false, . (false, _) => true, // Continue parsing the expression. . // An exhaustive check is done in the following block, but these are checked first . // because they *are* ambiguous but also reasonable looking incorrect syntax, so we . // want to keep their span info to improve diagnostics in these cases in a later stage. . (true, Some(AssocOp::Multiply)) | // `{ 42 } *foo = bar;` or `{ 42 } * 3` -- line 364 ---------------------------------------- -- line 401 ---------------------------------------- . err.emit(); . } . . /// Possibly translate the current token to an associative operator. . /// The method does not advance the current token. . /// . /// Also performs recovery for `and` / `or` which are mistaken for `&&` and `||` respectively. . fn check_assoc_op(&self) -> Option> { 261,507 ( 0.02%) let (op, span) = match (AssocOp::from_token(&self.token), self.token.ident()) { . // When parsing const expressions, stop parsing when encountering `>`. . ( . Some( . AssocOp::ShiftRight . | AssocOp::Greater . | AssocOp::GreaterEqual . | AssocOp::AssignOp(token::BinOpToken::Shr), . ), . _, 12 ( 0.00%) ) if self.restrictions.contains(Restrictions::CONST_EXPR) => { . return None; . } 800 ( 0.00%) (Some(op), _) => (op, self.token.span), . (None, Some((Ident { name: sym::and, span }, false))) => { . self.error_bad_logical_op("and", "&&", "conjunction"); . (AssocOp::LAnd, span) . } . (None, Some((Ident { name: sym::or, span }, false))) => { . self.error_bad_logical_op("or", "||", "disjunction"); . (AssocOp::LOr, span) . } -- line 430 ---------------------------------------- -- line 443 ---------------------------------------- . Applicability::MachineApplicable, . ) . .note("unlike in e.g., python and PHP, `&&` and `||` are used for logical operators") . .emit(); . } . . /// Checks if this expression is a successfully parsed statement. . fn expr_is_complete(&self, e: &Expr) -> bool { 47,312 ( 0.00%) self.restrictions.contains(Restrictions::STMT_EXPR) 3,345 ( 0.00%) && !classify::expr_requires_semi_to_be_stmt(e) . } . . /// Parses `x..y`, `x..=y`, and `x..`/`x..=`. . /// The other two variants are handled in `parse_prefix_range_expr` below. . fn parse_range_expr( . &mut self, . prec: usize, . lhs: P, . op: AssocOp, . cur_op_span: Span, . ) -> PResult<'a, P> { . let rhs = if self.is_at_start_of_range_notation_rhs() { 36 ( 0.00%) Some(self.parse_assoc_expr_with(prec + 1, LhsExpr::NotYetParsed)?) . } else { 18 ( 0.00%) None . }; 8 ( 0.00%) let rhs_span = rhs.as_ref().map_or(cur_op_span, |x| x.span); . let span = self.mk_expr_sp(&lhs, lhs.span, rhs_span); . let limits = . if op == AssocOp::DotDot { RangeLimits::HalfOpen } else { RangeLimits::Closed }; 39 ( 0.00%) let range = self.mk_range(Some(lhs), rhs, limits); . Ok(self.mk_expr(span, range, AttrVec::new())) . } . . fn is_at_start_of_range_notation_rhs(&self) -> bool { 102 ( 0.00%) if self.token.can_begin_expr() { . // Parse `for i in 1.. { }` as infinite loop, not as `for i in (1..{})`. 70 ( 0.00%) if self.token == token::OpenDelim(token::Brace) { . return !self.restrictions.contains(Restrictions::NO_STRUCT_LITERAL); . } . true . } else { . false . } . } . . /// Parses prefix-forms of range notation: `..expr`, `..`, `..=expr`. . fn parse_prefix_range_expr(&mut self, attrs: Option) -> PResult<'a, P> { . // Check for deprecated `...` syntax. 50 ( 0.00%) if self.token == token::DotDotDot { . self.err_dotdotdot_syntax(self.token.span); . } . . debug_assert!( . [token::DotDot, token::DotDotDot, token::DotDotEq].contains(&self.token.kind), . "parse_prefix_range_expr: token {:?} is not DotDot/DotDotEq", . self.token . ); . 30 ( 0.00%) let limits = match self.token.kind { . token::DotDot => RangeLimits::HalfOpen, . _ => RangeLimits::Closed, . }; 20 ( 0.00%) let op = AssocOp::from_token(&self.token); . // FIXME: `parse_prefix_range_expr` is called when the current . // token is `DotDot`, `DotDotDot`, or `DotDotEq`. If we haven't already . // parsed attributes, then trying to parse them here will always fail. . // We should figure out how we want attributes on range expressions to work. 40 ( 0.00%) let attrs = self.parse_or_use_outer_attributes(attrs)?; . self.collect_tokens_for_expr(attrs, |this, attrs| { 20 ( 0.00%) let lo = this.token.span; 20 ( 0.00%) this.bump(); . let (span, opt_end) = if this.is_at_start_of_range_notation_rhs() { . // RHS must be parsed with more associativity than the dots. 100 ( 0.00%) this.parse_assoc_expr_with(op.unwrap().precedence() + 1, LhsExpr::NotYetParsed) 50 ( 0.00%) .map(|x| (lo.to(x.span), Some(x)))? . } else { . (lo, None) . }; 30 ( 0.00%) let range = this.mk_range(None, opt_end, limits); 70 ( 0.00%) Ok(this.mk_expr(span, range, attrs.into())) . }) . } . . /// Parses a prefix-unary-operator expr. 163,163 ( 0.01%) fn parse_prefix_expr(&mut self, attrs: Option) -> PResult<'a, P> { 186,472 ( 0.01%) let attrs = self.parse_or_use_outer_attributes(attrs)?; 116,545 ( 0.01%) let lo = self.token.span; . . macro_rules! make_it { . ($this:ident, $attrs:expr, |this, _| $body:expr) => { 248 ( 0.00%) $this.collect_tokens_for_expr($attrs, |$this, attrs| { 416 ( 0.00%) let (hi, ex) = $body?; 448 ( 0.00%) Ok($this.mk_expr(lo.to(hi), ex, attrs.into())) 276 ( 0.00%) }) . }; . } . . let this = self; . . // Note: when adding new unary operators, don't forget to adjust TokenKind::can_begin_expr() 140,038 ( 0.01%) match this.token.uninterpolate().kind { 4 ( 0.00%) token::Not => make_it!(this, attrs, |this, _| this.parse_unary_expr(lo, UnOp::Not)), // `!expr` . token::Tilde => make_it!(this, attrs, |this, _| this.recover_tilde_expr(lo)), // `~expr` . token::BinOp(token::Minus) => { . make_it!(this, attrs, |this, _| this.parse_unary_expr(lo, UnOp::Neg)) . } // `-expr` . token::BinOp(token::Star) => { . make_it!(this, attrs, |this, _| this.parse_unary_expr(lo, UnOp::Deref)) . } // `*expr` . token::BinOp(token::And) | token::AndAnd => { 48 ( 0.00%) make_it!(this, attrs, |this, _| this.parse_borrow_expr(lo)) . } . token::BinOp(token::Plus) if this.look_ahead(1, |tok| tok.is_numeric_lit()) => { . let mut err = this.struct_span_err(lo, "leading `+` is not supported"); . err.span_label(lo, "unexpected `+`"); . . // a block on the LHS might have been intended to be an expression instead . if let Some(sp) = this.sess.ambiguous_block_expr_parse.borrow().get(&lo) { . this.sess.expr_parentheses_needed(&mut err, *sp); -- line 562 ---------------------------------------- -- line 568 ---------------------------------------- . Applicability::MachineApplicable, . ); . } . err.emit(); . . this.bump(); . this.parse_prefix_expr(None) . } // `+expr` 24,236 ( 0.00%) token::Ident(..) if this.token.is_keyword(kw::Box) => { . make_it!(this, attrs, |this, _| this.parse_box_expr(lo)) . } . token::Ident(..) if this.is_mistaken_not_ident_negation() => { . make_it!(this, attrs, |this, _| this.recover_not_expr(lo)) . } . _ => return this.parse_dot_or_call_expr(Some(attrs)), . } 233,090 ( 0.01%) } . . fn parse_prefix_expr_common(&mut self, lo: Span) -> PResult<'a, (Span, P)> { 8 ( 0.00%) self.bump(); 16 ( 0.00%) let expr = self.parse_prefix_expr(None); 4 ( 0.00%) let (span, expr) = self.interpolated_or_expr_span(expr)?; 8 ( 0.00%) Ok((lo.to(span), expr)) . } . . fn parse_unary_expr(&mut self, lo: Span, op: UnOp) -> PResult<'a, (Span, ExprKind)> { . let (span, expr) = self.parse_prefix_expr_common(lo)?; . Ok((span, self.mk_unary(op, expr))) . } . . // Recover on `!` suggesting for bitwise negation instead. -- line 598 ---------------------------------------- -- line 619 ---------------------------------------- . fn is_mistaken_not_ident_negation(&self) -> bool { . let token_cannot_continue_expr = |t: &Token| match t.uninterpolate().kind { . // These tokens can start an expression after `!`, but . // can't continue an expression after an ident . token::Ident(name, is_raw) => token::ident_can_begin_expr(name, t.span, is_raw), . token::Literal(..) | token::Pound => true, . _ => t.is_whole_expr(), . }; 24,236 ( 0.00%) self.token.is_ident_named(sym::not) && self.look_ahead(1, token_cannot_continue_expr) . } . . /// Recover on `not expr` in favor of `!expr`. . fn recover_not_expr(&mut self, lo: Span) -> PResult<'a, (Span, ExprKind)> { . // Emit the error... . let not_token = self.look_ahead(1, |t| t.clone()); . self.struct_span_err( . not_token.span, -- line 635 ---------------------------------------- -- line 651 ---------------------------------------- . . /// Returns the span of expr, if it was not interpolated or the span of the interpolated token. . fn interpolated_or_expr_span( . &self, . expr: PResult<'a, P>, . ) -> PResult<'a, (Span, P)> { . expr.map(|e| { . ( 93,264 ( 0.01%) match self.prev_token.kind { . TokenKind::Interpolated(..) => self.prev_token.span, . _ => e.span, . }, . e, . ) . }) . } . 364 ( 0.00%) fn parse_assoc_op_cast( . &mut self, . lhs: P, . lhs_span: Span, . expr_kind: fn(P, P) -> ExprKind, . ) -> PResult<'a, P> { . let mk_expr = |this: &mut Self, lhs: P, rhs: P| { . this.mk_expr( . this.mk_expr_sp(&lhs, lhs_span, rhs.span), 78 ( 0.00%) expr_kind(lhs, rhs), . AttrVec::new(), . ) . }; . . // Save the state of the parser before parsing type normally, in case there is a . // LessThan comparison after this cast. 52 ( 0.00%) let parser_snapshot_before_type = self.clone(); 78 ( 0.00%) let cast_expr = match self.parse_as_cast_ty() { . Ok(rhs) => mk_expr(self, lhs, rhs), . Err(mut type_err) => { . // Rewind to before attempting to parse the type with generics, to recover . // from situations like `x as usize < y` in which we first tried to parse . // `usize < y` as a type with generic arguments. . let parser_snapshot_after_type = mem::replace(self, parser_snapshot_before_type); . . // Check for typo of `'a: loop { break 'a }` with a missing `'`. -- line 693 ---------------------------------------- -- line 779 ---------------------------------------- . *self = parser_snapshot_after_type; . return Err(type_err); . } . } . } . }; . . self.parse_and_disallow_postfix_after_cast(cast_expr) 312 ( 0.00%) } . . /// Parses a postfix operators such as `.`, `?`, or index (`[]`) after a cast, . /// then emits an error and returns the newly parsed tree. . /// The resulting parse tree for `&x as T[0]` has a precedence of `((&x) as T)[0]`. . fn parse_and_disallow_postfix_after_cast( . &mut self, . cast_expr: P, . ) -> PResult<'a, P> { . // Save the memory location of expr before parsing any following postfix operators. . // This will be compared with the memory location of the output expression. . // If they different we can assume we parsed another expression because the existing expression is not reallocated. . let addr_before = &*cast_expr as *const _ as usize; . let span = cast_expr.span; 156 ( 0.00%) let with_postfix = self.parse_dot_or_call_expr_with_(cast_expr, span)?; . let changed = addr_before != &*with_postfix as *const _ as usize; . . // Check if an illegal postfix operator has been added after the cast. . // If the resulting expression is not a cast, or has a different memory location, it is an illegal postfix operator. 156 ( 0.00%) if !matches!(with_postfix.kind, ExprKind::Cast(_, _) | ExprKind::Type(_, _)) || changed { . let msg = format!( . "casts cannot be followed by {}", . match with_postfix.kind { . ExprKind::Index(_, _) => "indexing", . ExprKind::Try(_) => "`?`", . ExprKind::Field(_, _) => "a field access", . ExprKind::MethodCall(_, _, _) => "a method call", . ExprKind::Call(_, _) => "a function call", -- line 814 ---------------------------------------- -- line 844 ---------------------------------------- . let lhs = self.parse_assoc_op_cast(lhs, lhs_span, ExprKind::Type)?; . self.sess.gated_spans.gate(sym::type_ascription, lhs.span); . Ok(lhs) . } . . /// Parse `& mut? ` or `& raw [ const | mut ] `. . fn parse_borrow_expr(&mut self, lo: Span) -> PResult<'a, (Span, ExprKind)> { . self.expect_and()?; 120 ( 0.00%) let has_lifetime = self.token.is_lifetime() && self.look_ahead(1, |t| t != &token::Colon); . let lifetime = has_lifetime.then(|| self.expect_lifetime()); // For recovery, see below. . let (borrow_kind, mutbl) = self.parse_borrow_modifiers(lo); 96 ( 0.00%) let expr = self.parse_prefix_expr(None); 48 ( 0.00%) let (hi, expr) = self.interpolated_or_expr_span(expr)?; 24 ( 0.00%) let span = lo.to(hi); 48 ( 0.00%) if let Some(lt) = lifetime { . self.error_remove_borrow_lifetime(span, lt.ident.span); . } . Ok((span, ExprKind::AddrOf(borrow_kind, mutbl, expr))) . } . . fn error_remove_borrow_lifetime(&self, span: Span, lt_span: Span) { . self.struct_span_err(span, "borrow expressions cannot be annotated with lifetimes") . .span_label(lt_span, "annotated with lifetime here") -- line 866 ---------------------------------------- -- line 870 ---------------------------------------- . String::new(), . Applicability::MachineApplicable, . ) . .emit(); . } . . /// Parse `mut?` or `raw [ const | mut ]`. . fn parse_borrow_modifiers(&mut self, lo: Span) -> (ast::BorrowKind, ast::Mutability) { 48 ( 0.00%) if self.check_keyword(kw::Raw) && self.look_ahead(1, Token::is_mutability) { . // `raw [ const | mut ]`. . let found_raw = self.eat_keyword(kw::Raw); . assert!(found_raw); . let mutability = self.parse_const_or_mut().unwrap(); . self.sess.gated_spans.gate(sym::raw_ref_op, lo.to(self.prev_token.span)); . (ast::BorrowKind::Raw, mutability) . } else { . // `mut?` -- line 886 ---------------------------------------- -- line 889 ---------------------------------------- . } . . /// Parses `a.b` or `a(13)` or `a[4]` or just `a`. . fn parse_dot_or_call_expr(&mut self, attrs: Option) -> PResult<'a, P> { . let attrs = self.parse_or_use_outer_attributes(attrs)?; . self.collect_tokens_for_expr(attrs, |this, attrs| { . let base = this.parse_bottom_expr(); . let (span, base) = this.interpolated_or_expr_span(base)?; 93,124 ( 0.01%) this.parse_dot_or_call_expr_with(base, span, attrs) . }) . } . 24 ( 0.00%) pub(super) fn parse_dot_or_call_expr_with( . &mut self, . e0: P, . lo: Span, . mut attrs: Vec, . ) -> PResult<'a, P> { . // Stitch the list of outer attributes onto the return value. . // A little bit ugly, but the best way given the current code . // structure 164,814 ( 0.01%) self.parse_dot_or_call_expr_with_(e0, lo).map(|expr| { 164,826 ( 0.01%) expr.map(|mut expr| { 23,546 ( 0.00%) attrs.extend::>(expr.attrs.into()); 47,092 ( 0.00%) expr.attrs = attrs.into(); 329,644 ( 0.02%) expr . }) . }) 32 ( 0.00%) } . 730,732 ( 0.04%) fn parse_dot_or_call_expr_with_(&mut self, mut e: P, lo: Span) -> PResult<'a, P> { . loop { . if self.eat(&token::Question) { . // `expr?` 8 ( 0.00%) e = self.mk_expr(lo.to(self.prev_token.span), ExprKind::Try(e), AttrVec::new()); . continue; . } . if self.eat(&token::Dot) { . // expr.f 1,708 ( 0.00%) e = self.parse_dot_suffix_expr(lo, e)?; . continue; . } 1,410 ( 0.00%) if self.expr_is_complete(&e) { . return Ok(e); . } 49,396 ( 0.00%) e = match self.token.kind { 402 ( 0.00%) token::OpenDelim(token::Paren) => self.parse_fn_call_expr(lo, e), 112 ( 0.00%) token::OpenDelim(token::Bracket) => self.parse_index_expr(lo, e)?, 23,410 ( 0.00%) _ => return Ok(e), . } . } 212,148 ( 0.01%) } . . fn look_ahead_type_ascription_as_field(&mut self) -> bool { 845 ( 0.00%) self.look_ahead(1, |t| t.is_ident()) . && self.look_ahead(2, |t| t == &token::Colon) . && self.look_ahead(3, |t| t.can_begin_expr()) . } . . fn parse_dot_suffix_expr(&mut self, lo: Span, base: P) -> PResult<'a, P> { 4,830 ( 0.00%) match self.token.uninterpolate().kind { . token::Ident(..) => self.parse_dot_suffix(base, lo), 114 ( 0.00%) token::Literal(token::Lit { kind: token::Integer, symbol, suffix }) => { 171 ( 0.00%) Ok(self.parse_tuple_field_access_expr(lo, base, symbol, suffix, None)) . } . token::Literal(token::Lit { kind: token::Float, symbol, suffix }) => { . Ok(self.parse_tuple_field_access_expr_float(lo, base, symbol, suffix)) . } . _ => { . self.error_unexpected_after_dot(); . Ok(base) . } -- line 960 ---------------------------------------- -- line 1071 ---------------------------------------- . // See the FIXME about `TokenCursor` above. . self.error_unexpected_after_dot(); . base . } . _ => panic!("unexpected components in a float token: {:?}", components), . } . } . 247 ( 0.00%) fn parse_tuple_field_access_expr( . &mut self, . lo: Span, . base: P, . field: Symbol, . suffix: Option, . next_token: Option<(Token, Spacing)>, . ) -> P { 38 ( 0.00%) match next_token { . Some(next_token) => self.bump_with(next_token), 57 ( 0.00%) None => self.bump(), . } 19 ( 0.00%) let span = self.prev_token.span; 76 ( 0.00%) let field = ExprKind::Field(base, Ident::new(field, span)); 114 ( 0.00%) self.expect_no_suffix(span, "a tuple index", suffix); 57 ( 0.00%) self.mk_expr(lo.to(span), field, AttrVec::new()) 152 ( 0.00%) } . . /// Parse a function call expression, `expr(...)`. . fn parse_fn_call_expr(&mut self, lo: Span, fun: P) -> P { 670 ( 0.00%) let snapshot = if self.token.kind == token::OpenDelim(token::Paren) . && self.look_ahead_type_ascription_as_field() . { . Some((self.clone(), fun.kind.clone())) . } else { 402 ( 0.00%) None . }; 134 ( 0.00%) let open_paren = self.token.span; . 268 ( 0.00%) let mut seq = self.parse_paren_expr_seq().map(|args| { 402 ( 0.00%) self.mk_expr(lo.to(self.prev_token.span), self.mk_call(fun, args), AttrVec::new()) . }); . if let Some(expr) = . self.maybe_recover_struct_lit_bad_delims(lo, open_paren, &mut seq, snapshot) . { . return expr; . } 670 ( 0.00%) self.recover_seq_parse_error(token::Paren, lo, seq) . } . . /// If we encounter a parser state that looks like the user has written a `struct` literal with . /// parentheses instead of braces, recover the parser state and provide suggestions. . #[instrument(skip(self, seq, snapshot), level = "trace")] . fn maybe_recover_struct_lit_bad_delims( . &mut self, . lo: Span, . open_paren: Span, . seq: &mut PResult<'a, P>, . snapshot: Option<(Self, ExprKind)>, . ) -> Option> { 1,340 ( 0.00%) match (seq.as_mut(), snapshot) { . (Err(ref mut err), Some((mut snapshot, ExprKind::Path(None, path)))) => { . let name = pprust::path_to_string(&path); . snapshot.bump(); // `(` . match snapshot.parse_struct_fields(path, false, token::Paren) { . Ok((fields, ..)) if snapshot.eat(&token::CloseDelim(token::Paren)) => { . // We are certain we have `Enum::Foo(a: 3, b: 4)`, suggest . // `Enum::Foo { a: 3, b: 4 }` or `Enum::Foo(3, 4)`. . *self = snapshot; -- line 1137 ---------------------------------------- -- line 1165 ---------------------------------------- . } . return Some(self.mk_expr_err(span)); . } . Ok(_) => {} . Err(mut err) => err.emit(), . } . } . _ => {} 402 ( 0.00%) } . None . } . . /// Parse an indexing expression `expr[...]`. . fn parse_index_expr(&mut self, lo: Span, base: P) -> PResult<'a, P> { 112 ( 0.00%) self.bump(); // `[` 112 ( 0.00%) let index = self.parse_expr()?; 168 ( 0.00%) self.expect(&token::CloseDelim(token::Bracket))?; 168 ( 0.00%) Ok(self.mk_expr(lo.to(self.prev_token.span), self.mk_index(base, index), AttrVec::new())) . } . . /// Assuming we have just parsed `.`, continue parsing into an expression. . fn parse_dot_suffix(&mut self, self_arg: P, lo: Span) -> PResult<'a, P> { 816 ( 0.00%) if self.token.uninterpolated_span().rust_2018() && self.eat_keyword(kw::Await) { . return Ok(self.mk_await_expr(self_arg, lo)); . } . 408 ( 0.00%) let fn_span_lo = self.token.span; 2,448 ( 0.00%) let mut segment = self.parse_path_segment(PathStyle::Expr, None)?; 2,040 ( 0.00%) self.check_trailing_angle_brackets(&segment, &[&token::OpenDelim(token::Paren)]); . self.check_turbofish_missing_angle_brackets(&mut segment); . 2,040 ( 0.00%) if self.check(&token::OpenDelim(token::Paren)) { . // Method call `expr.f()` 224 ( 0.00%) let mut args = self.parse_paren_expr_seq()?; 896 ( 0.00%) args.insert(0, self_arg); . 672 ( 0.00%) let fn_span = fn_span_lo.to(self.prev_token.span); 672 ( 0.00%) let span = lo.to(self.prev_token.span); 1,120 ( 0.00%) Ok(self.mk_expr(span, ExprKind::MethodCall(segment, args, fn_span), AttrVec::new())) . } else { . // Field access `expr.f` 368 ( 0.00%) if let Some(args) = segment.args { . self.struct_span_err( . args.span(), . "field expressions cannot have generic arguments", . ) . .emit(); . } . 552 ( 0.00%) let span = lo.to(self.prev_token.span); 920 ( 0.00%) Ok(self.mk_expr(span, ExprKind::Field(self_arg, segment.ident), AttrVec::new())) . } . } . . /// At the bottom (top?) of the precedence hierarchy, . /// Parses things like parenthesized exprs, macros, `return`, etc. . /// . /// N.B., this does not parse outer attributes, and is private because it only works . /// correctly if called from `parse_dot_or_call_expr()`. . fn parse_bottom_expr(&mut self) -> PResult<'a, P> { 52,918 ( 0.00%) maybe_recover_from_interpolated_ty_qpath!(self, true); 69,899 ( 0.00%) maybe_whole_expr!(self); . . // Outer attributes are already parsed and will be . // added to the return value after the fact. . // . // Therefore, prevent sub-parser from parsing . // attributes by giving them an empty "already-parsed" list. 23,277 ( 0.00%) let attrs = AttrVec::new(); . . // Note: when adding new syntax here, don't forget to adjust `TokenKind::can_begin_expr()`. 11,836 ( 0.00%) let lo = self.token.span; 69,831 ( 0.00%) if let token::Literal(_) = self.token.kind { . // This match arm is a special-case of the `_` match arm below and . // could be removed without changing functionality, but it's faster . // to have it here, especially for programs with large constants. 45,764 ( 0.00%) self.parse_lit_expr(attrs) 59,180 ( 0.00%) } else if self.check(&token::OpenDelim(token::Paren)) { 17,070 ( 0.00%) self.parse_tuple_parens_expr(attrs) 30,730 ( 0.00%) } else if self.check(&token::OpenDelim(token::Brace)) { 448 ( 0.00%) self.parse_block_expr(None, lo, BlockCheckMode::Default, attrs) 60,790 ( 0.00%) } else if self.check(&token::BinOp(token::Or)) || self.check(&token::OrOr) { 88 ( 0.00%) self.parse_closure_expr(attrs) 30,340 ( 0.00%) } else if self.check(&token::OpenDelim(token::Bracket)) { 45 ( 0.00%) self.parse_array_or_repeat_expr(attrs, token::Bracket) 24,236 ( 0.00%) } else if self.check_path() { 23,056 ( 0.00%) self.parse_path_start_expr(attrs) 2,950 ( 0.00%) } else if self.check_keyword(kw::Move) || self.check_keyword(kw::Static) { . self.parse_closure_expr(attrs) 1,475 ( 0.00%) } else if self.eat_keyword(kw::If) { 356 ( 0.00%) self.parse_if_expr(attrs) 1,030 ( 0.00%) } else if self.check_keyword(kw::For) { 30 ( 0.00%) if self.choose_generics_over_qpath(1) { . // NOTE(Centril, eddyb): DO NOT REMOVE! Beyond providing parser recovery, . // this is an insurance policy in case we allow qpaths in (tuple-)struct patterns. . // When `for ::Proj in $expr $block` is wanted, . // you can disambiguate in favor of a pattern with `(...)`. . self.recover_quantified_closure_expr(attrs) . } else { 30 ( 0.00%) assert!(self.eat_keyword(kw::For)); 42 ( 0.00%) self.parse_for_expr(None, self.prev_token.span, attrs) . } 1,000 ( 0.00%) } else if self.eat_keyword(kw::While) { . self.parse_while_expr(None, self.prev_token.span, attrs) 800 ( 0.00%) } else if let Some(label) = self.eat_label() { . self.parse_labeled_expr(label, attrs, true) 1,000 ( 0.00%) } else if self.eat_keyword(kw::Loop) { 14 ( 0.00%) self.parse_loop_expr(None, self.prev_token.span, attrs) 990 ( 0.00%) } else if self.eat_keyword(kw::Continue) { 65 ( 0.00%) let kind = ExprKind::Continue(self.eat_label()); 52 ( 0.00%) Ok(self.mk_expr(lo.to(self.prev_token.span), kind, attrs)) 740 ( 0.00%) } else if self.eat_keyword(kw::Match) { 82 ( 0.00%) let match_sp = self.prev_token.span; 328 ( 0.00%) self.parse_match_expr(attrs).map_err(|mut err| { . err.span_label(match_sp, "while parsing this match expression"); . err . }) 576 ( 0.00%) } else if self.eat_keyword(kw::Unsafe) { . self.parse_block_expr(None, lo, BlockCheckMode::Unsafe(ast::UserProvided), attrs) 576 ( 0.00%) } else if self.check_inline_const(0) { . self.parse_const_block(lo.to(self.token.span), false) 432 ( 0.00%) } else if self.is_do_catch_block() { . self.recover_do_catch(attrs) 432 ( 0.00%) } else if self.is_try_block() { . self.expect_keyword(kw::Try)?; . self.parse_try_block(lo, attrs) 576 ( 0.00%) } else if self.eat_keyword(kw::Return) { 136 ( 0.00%) self.parse_return_expr(attrs) 440 ( 0.00%) } else if self.eat_keyword(kw::Break) { 104 ( 0.00%) self.parse_break_expr(attrs) 336 ( 0.00%) } else if self.eat_keyword(kw::Yield) { . self.parse_yield_expr(attrs) 336 ( 0.00%) } else if self.eat_keyword(kw::Let) { 48 ( 0.00%) self.parse_let_expr(attrs) 288 ( 0.00%) } else if self.eat_keyword(kw::Underscore) { . Ok(self.mk_expr(self.prev_token.span, ExprKind::Underscore, attrs)) 72 ( 0.00%) } else if !self.unclosed_delims.is_empty() && self.check(&token::Semi) { . // Don't complain about bare semicolons after unclosed braces . // recovery in order to keep the error count down. Fixing the . // delimiters will possibly also fix the bare semicolon found in . // expression context. For example, silence the following error: . // . // error: expected expression, found `;` . // --> file.rs:2:13 . // | . // 2 | foo(bar(; . // | ^ expected expression . self.bump(); . Ok(self.mk_expr_err(self.token.span)) 144 ( 0.00%) } else if self.token.uninterpolated_span().rust_2018() { . // `Span::rust_2018()` is somewhat expensive; don't get it repeatedly. 288 ( 0.00%) if self.check_keyword(kw::Async) { . if self.is_async_block() { . // Check for `async {` and `async move {`. . self.parse_async_block(attrs) . } else { . self.parse_closure_expr(attrs) . } 288 ( 0.00%) } else if self.eat_keyword(kw::Await) { . self.recover_incorrect_await_syntax(lo, self.prev_token.span, attrs) . } else { 288 ( 0.00%) self.parse_lit_expr(attrs) . } . } else { . self.parse_lit_expr(attrs) . } . } . 115,130 ( 0.01%) fn parse_lit_expr(&mut self, attrs: AttrVec) -> PResult<'a, P> { 23,026 ( 0.00%) let lo = self.token.span; 46,052 ( 0.00%) match self.parse_opt_lit() { 69,078 ( 0.00%) Some(literal) => { 103,617 ( 0.01%) let expr = self.mk_expr(lo.to(self.prev_token.span), ExprKind::Lit(literal), attrs); 115,130 ( 0.01%) self.maybe_recover_from_bad_qpath(expr, true) . } . None => self.try_macro_suggestion(), . } . } . . fn parse_tuple_parens_expr(&mut self, attrs: AttrVec) -> PResult<'a, P> { 11,380 ( 0.00%) let lo = self.token.span; 17,070 ( 0.00%) self.expect(&token::OpenDelim(token::Paren))?; . let (es, trailing_comma) = match self.parse_seq_to_end( . &token::CloseDelim(token::Paren), . SeqSep::trailing_allowed(token::Comma), 32,428 ( 0.00%) |p| p.parse_expr_catch_underscore(), . ) { . Ok(x) => x, . Err(err) => return Ok(self.recover_seq_parse_error(token::Paren, lo, Err(err))), . }; 28,450 ( 0.00%) let kind = if es.len() == 1 && !trailing_comma { . // `(e)` is parenthesized `e`. 21 ( 0.00%) ExprKind::Paren(es.into_iter().next().unwrap()) . } else { . // `(e,)` is a tuple with only one field, `e`. 28,415 ( 0.00%) ExprKind::Tup(es) . }; 17,070 ( 0.00%) let expr = self.mk_expr(lo.to(self.prev_token.span), kind, attrs); 17,070 ( 0.00%) self.maybe_recover_from_bad_qpath(expr, true) . } . 99 ( 0.00%) fn parse_array_or_repeat_expr( . &mut self, . attrs: AttrVec, . close_delim: token::DelimToken, . ) -> PResult<'a, P> { 27 ( 0.00%) let lo = self.token.span; 9 ( 0.00%) self.bump(); // `[` or other open delim . 27 ( 0.00%) let close = &token::CloseDelim(close_delim); . let kind = if self.eat(close) { . // Empty vector . ExprKind::Array(Vec::new()) . } else { . // Non-empty vector 18 ( 0.00%) let first_expr = self.parse_expr()?; . if self.eat(&token::Semi) { . // Repeating array syntax: `[ 0; 512 ]` . let count = self.parse_anon_const_expr()?; . self.expect(close)?; . ExprKind::Repeat(first_expr, count) . } else if self.eat(&token::Comma) { . // Vector with two or more elements. . let sep = SeqSep::trailing_allowed(token::Comma); . let (remaining_exprs, _) = self.parse_seq_to_end(close, sep, |p| p.parse_expr())?; 9 ( 0.00%) let mut exprs = vec![first_expr]; . exprs.extend(remaining_exprs); 45 ( 0.00%) ExprKind::Array(exprs) . } else { . // Vector with one element . self.expect(close)?; . ExprKind::Array(vec![first_expr]) . } . }; 27 ( 0.00%) let expr = self.mk_expr(lo.to(self.prev_token.span), kind, attrs); 27 ( 0.00%) self.maybe_recover_from_bad_qpath(expr, true) 90 ( 0.00%) } . 57,640 ( 0.00%) fn parse_path_start_expr(&mut self, attrs: AttrVec) -> PResult<'a, P> { 46,112 ( 0.00%) let (qself, path) = if self.eat_lt() { . let (qself, path) = self.parse_qpath(PathStyle::Expr)?; . (Some(qself), path) . } else { 11,528 ( 0.00%) (None, self.parse_path(PathStyle::Expr)?) . }; 5,764 ( 0.00%) let lo = path.span; . . // `!`, as an operator, is prefix, so we know this isn't that. 86,460 ( 0.01%) let (hi, kind) = if self.eat(&token::Not) { . // MACRO INVOCATION expression 5 ( 0.00%) if qself.is_some() { . self.struct_span_err(path.span, "macros cannot use qualified paths").emit(); . } 30 ( 0.00%) let mac = MacCall { 35 ( 0.00%) path, . args: self.parse_mac_args()?, . prior_type_ascription: self.last_type_ascription, . }; 110 ( 0.00%) (self.prev_token.span, ExprKind::MacCall(mac)) 28,795 ( 0.00%) } else if self.check(&token::OpenDelim(token::Brace)) { . if let Some(expr) = self.maybe_parse_struct_expr(qself.as_ref(), &path, &attrs) { . if qself.is_some() { . self.sess.gated_spans.gate(sym::more_qualified_paths, path.span); . } . return expr; . } else { . (path.span, ExprKind::Path(qself, path)) . } . } else { . (path.span, ExprKind::Path(qself, path)) . }; . 11,528 ( 0.00%) let expr = self.mk_expr(lo.to(hi), kind, attrs); 17,292 ( 0.00%) self.maybe_recover_from_bad_qpath(expr, true) 69,168 ( 0.00%) } . . /// Parse `'label: $expr`. The label is already parsed. . fn parse_labeled_expr( . &mut self, . label: Label, . attrs: AttrVec, . mut consume_colon: bool, . ) -> PResult<'a, P> { -- line 1447 ---------------------------------------- -- line 1507 ---------------------------------------- . .note("following RFC #2388, the new non-placeholder syntax is `try`") . .emit(); . . self.parse_try_block(lo, attrs) . } . . /// Parse an expression if the token can begin one. . fn parse_expr_opt(&mut self) -> PResult<'a, Option>> { 267 ( 0.00%) Ok(if self.token.can_begin_expr() { Some(self.parse_expr()?) } else { None }) . } . . /// Parse `"return" expr?`. 340 ( 0.00%) fn parse_return_expr(&mut self, attrs: AttrVec) -> PResult<'a, P> { 34 ( 0.00%) let lo = self.prev_token.span; 68 ( 0.00%) let kind = ExprKind::Ret(self.parse_expr_opt()?); 102 ( 0.00%) let expr = self.mk_expr(lo.to(self.prev_token.span), kind, attrs); 204 ( 0.00%) self.maybe_recover_from_bad_qpath(expr, true) 340 ( 0.00%) } . . /// Parse `"break" (('label (:? expr)?) | expr?)` with `"break"` token already eaten. . /// If the label is followed immediately by a `:` token, the label and `:` are . /// parsed as part of the expression (i.e. a labeled loop). The language team has . /// decided in #87026 to require parentheses as a visual aid to avoid confusion if . /// the break expression of an unlabeled break is a labeled loop (as in . /// `break 'lbl: loop {}`); a labeled break with an unlabeled loop as its value . /// expression only gets a warning for compatibility reasons; and a labeled break . /// with a labeled loop does not even get a warning because there is no ambiguity. 260 ( 0.00%) fn parse_break_expr(&mut self, attrs: AttrVec) -> PResult<'a, P> { 52 ( 0.00%) let lo = self.prev_token.span; . let mut label = self.eat_label(); . let kind = if label.is_some() && self.token == token::Colon { . // The value expression can be a labeled loop, see issue #86948, e.g.: . // `loop { break 'label: loop { break 'label 42; }; }` . let lexpr = self.parse_labeled_expr(label.take().unwrap(), AttrVec::new(), true)?; . self.struct_span_err( . lexpr.span, . "parentheses are required around this expression to avoid confusion with a labeled break expression", -- line 1543 ---------------------------------------- -- line 1547 ---------------------------------------- . vec![ . (lexpr.span.shrink_to_lo(), "(".to_string()), . (lexpr.span.shrink_to_hi(), ")".to_string()), . ], . Applicability::MachineApplicable, . ) . .emit(); . Some(lexpr) 52 ( 0.00%) } else if self.token != token::OpenDelim(token::Brace) . || !self.restrictions.contains(Restrictions::NO_STRUCT_LITERAL) . { . let expr = self.parse_expr_opt()?; . if let Some(ref expr) = expr { . if label.is_some() . && matches!( . expr.kind, . ExprKind::While(_, _, None) -- line 1563 ---------------------------------------- -- line 1570 ---------------------------------------- . BREAK_WITH_LABEL_AND_LOOP, . lo.to(expr.span), . ast::CRATE_NODE_ID, . "this labeled break expression is easy to confuse with an unlabeled break with a labeled value expression", . BuiltinLintDiagnostics::BreakWithLabelAndLoop(expr.span), . ); . } . } 52 ( 0.00%) expr . } else { . None . }; 78 ( 0.00%) let expr = self.mk_expr(lo.to(self.prev_token.span), ExprKind::Break(label, kind), attrs); 130 ( 0.00%) self.maybe_recover_from_bad_qpath(expr, true) 260 ( 0.00%) } . . /// Parse `"yield" expr?`. . fn parse_yield_expr(&mut self, attrs: AttrVec) -> PResult<'a, P> { . let lo = self.prev_token.span; . let kind = ExprKind::Yield(self.parse_expr_opt()?); . let span = lo.to(self.prev_token.span); . self.sess.gated_spans.gate(sym::generators, span); . let expr = self.mk_expr(span, kind, attrs); -- line 1592 ---------------------------------------- -- line 1607 ---------------------------------------- . symbol_unescaped, . }), . _ => Err(Some(lit)), . }, . None => Err(None), . } . } . 1,431 ( 0.00%) pub(super) fn parse_lit(&mut self) -> PResult<'a, Lit> { 159 ( 0.00%) self.parse_opt_lit().ok_or_else(|| { 302 ( 0.00%) if let token::Interpolated(inner) = &self.token.kind { . let expr = match inner.as_ref() { . token::NtExpr(expr) => Some(expr), . token::NtLiteral(expr) => Some(expr), . _ => None, . }; . if let Some(expr) = expr { . if matches!(expr.kind, ExprKind::Err) { . self.diagnostic() . .delay_span_bug(self.token.span, &"invalid interpolated expression"); . return self.diagnostic().struct_dummy(); . } . } . } 1,661 ( 0.00%) let msg = format!("unexpected token: {}", super::token_descr(&self.token)); 151 ( 0.00%) self.struct_span_err(self.token.span, &msg) . }) 1,113 ( 0.00%) } . . /// Matches `lit = true | false | token_lit`. . /// Returns `None` if the next token is not a literal. 105,048 ( 0.01%) pub(super) fn parse_opt_lit(&mut self) -> Option { 11,672 ( 0.00%) let mut recovered = None; 70,032 ( 0.00%) if self.token == token::Dot { . // Attempt to recover `.4` as `0.4`. We don't currently have any syntax where . // dot would follow an optional literal, so we do this unconditionally. . recovered = self.look_ahead(1, |next_token| { . if let token::Literal(token::Lit { kind: token::Integer, symbol, suffix }) = . next_token.kind . { . if self.token.span.hi() == next_token.span.lo() { . let s = String::from("0.") + symbol.as_str(); -- line 1648 ---------------------------------------- -- line 1654 ---------------------------------------- . }); . if let Some(token) = &recovered { . self.bump(); . self.error_float_lits_must_have_int_part(&token); . } . } . . let token = recovered.as_ref().unwrap_or(&self.token); 35,469 ( 0.00%) match Lit::from_token(token) { 69,126 ( 0.00%) Ok(lit) => { 23,042 ( 0.00%) self.bump(); 69,126 ( 0.00%) Some(lit) . } 151 ( 0.00%) Err(LitError::NotLiteral) => None, . Err(err) => { . let span = token.span; . let lit = match token.kind { . token::Literal(lit) => lit, . _ => unreachable!(), . }; . self.bump(); . self.report_lit_error(err, lit, span); -- line 1675 ---------------------------------------- -- line 1676 ---------------------------------------- . // Pack possible quotes and prefixes from the original literal into . // the error literal's symbol so they can be pretty-printed faithfully. . let suffixless_lit = token::Lit::new(lit.kind, lit.symbol, None); . let symbol = Symbol::intern(&suffixless_lit.to_string()); . let lit = token::Lit::new(token::Err, symbol, lit.suffix); . Some(Lit::from_lit_token(lit, span).unwrap_or_else(|_| unreachable!())) . } . } 93,376 ( 0.01%) } . . fn error_float_lits_must_have_int_part(&self, token: &Token) { . self.struct_span_err(token.span, "float literals must have an integer part") . .span_suggestion( . token.span, . "must have an integer part", . pprust::token_to_string(token).into(), . Applicability::MachineApplicable, -- line 1692 ---------------------------------------- -- line 1759 ---------------------------------------- . .emit(); . } . LitError::IntTooLarge => { . self.struct_span_err(span, "integer literal is too large").emit(); . } . } . } . 133 ( 0.00%) pub(super) fn expect_no_suffix(&self, sp: Span, kind: &str, suffix: Option) { 38 ( 0.00%) if let Some(suf) = suffix { . let mut err = if kind == "a tuple index" . && [sym::i32, sym::u32, sym::isize, sym::usize].contains(&suf) . { . // #59553: warn instead of reject out of hand to allow the fix to percolate . // through the ecosystem when people fix their macros . let mut err = self . .sess . .span_diagnostic -- line 1776 ---------------------------------------- -- line 1791 ---------------------------------------- . ); . err . } else { . self.struct_span_err(sp, &format!("suffixes on {} are invalid", kind)) . }; . err.span_label(sp, format!("invalid suffix `{}`", suf)); . err.emit(); . } 114 ( 0.00%) } . . /// Matches `'-' lit | lit` (cf. `ast_validation::AstValidator::check_expr_within_pat`). . /// Keep this in sync with `Token::can_begin_literal_maybe_minus`. 48 ( 0.00%) pub fn parse_literal_maybe_minus(&mut self) -> PResult<'a, P> { 12 ( 0.00%) maybe_whole_expr!(self); . 6 ( 0.00%) let lo = self.token.span; . let minus_present = self.eat(&token::BinOp(token::Minus)); 12 ( 0.00%) let lit = self.parse_lit()?; 6 ( 0.00%) let expr = self.mk_expr(lit.span, ExprKind::Lit(lit), AttrVec::new()); . 12 ( 0.00%) if minus_present { . Ok(self.mk_expr( . lo.to(self.prev_token.span), . self.mk_unary(UnOp::Neg, expr), . AttrVec::new(), . )) . } else { . Ok(expr) . } 54 ( 0.00%) } . . fn is_array_like_block(&mut self) -> bool { 165 ( 0.00%) self.look_ahead(1, |t| matches!(t.kind, TokenKind::Ident(..) | TokenKind::Literal(_))) . && self.look_ahead(2, |t| t == &token::Comma) . && self.look_ahead(3, |t| t.can_begin_expr()) . } . . /// Emits a suggestion if it looks like the user meant an array but . /// accidentally used braces, causing the code to be interpreted as a block . /// expression. . fn maybe_suggest_brackets_instead_of_braces( -- line 1831 ---------------------------------------- -- line 1855 ---------------------------------------- . Err(mut e) => { . e.cancel(); . None . } . } . } . . /// Parses a block or unsafe block. 784 ( 0.00%) pub(super) fn parse_block_expr( . &mut self, . opt_label: Option

(&mut self, mut predicate: P) -> Option . where . Self: Sized, . P: FnMut(&Self::Item) -> bool, . { 61,035 ( 0.00%) while let Some(x) = self.next() { 60,784 ( 0.00%) if predicate(&x) { 84 ( 0.00%) return Some(x); . } . } . None 133 ( 0.00%) } . . // We override the default implementation, which uses `try_fold`, . // because this simple implementation generates less LLVM IR and is . // faster to compile. . #[inline] . fn find_map(&mut self, mut f: F) -> Option . where . Self: Sized, . F: FnMut(Self::Item) -> Option, . { 5,996 ( 0.00%) while let Some(x) = self.next() { 112,722 ( 0.01%) if let Some(y) = f(x) { 5,273 ( 0.00%) return Some(y); . } . } . None 2,778 ( 0.00%) } . . // We override the default implementation, which uses `try_fold`, . // because this simple implementation generates less LLVM IR and is . // faster to compile. Also, the `assume` avoids a bounds check. . #[inline] . #[rustc_inherit_overflow_checks] . fn position

(&mut self, mut predicate: P) -> Option where . Self: Sized, . P: FnMut(Self::Item) -> bool, . { . let n = len!(self); . let mut i = 0; . while let Some(x) = self.next() { 185,048 ( 0.01%) if predicate(x) { . // SAFETY: we are guaranteed to be in bounds by the loop invariant: . // when `i >= n`, `self.next()` returns `None` and the loop breaks. . unsafe { assume(i < n) }; . return Some(i); . } . i += 1; . } . None -- line 303 ---------------------------------------- -- line 308 ---------------------------------------- . // faster to compile. Also, the `assume` avoids a bounds check. . #[inline] . fn rposition

(&mut self, mut predicate: P) -> Option where . P: FnMut(Self::Item) -> bool, . Self: Sized + ExactSizeIterator + DoubleEndedIterator . { . let n = len!(self); . let mut i = n; 3,639 ( 0.00%) while let Some(x) = self.next_back() { 45,867 ( 0.00%) i -= 1; 34,201 ( 0.00%) if predicate(x) { . // SAFETY: `i` must be lower than `n` since it starts at `n` . // and is only decreasing. . unsafe { assume(i < n) }; . return Some(i); . } . } . None . } -- line 326 ---------------------------------------- -- line 332 ---------------------------------------- . // the returned references is guaranteed to refer to an element . // of the slice and thus guaranteed to be valid. . // . // Also note that the caller also guarantees that we're never . // called with the same index again, and that no other methods . // that will access this subslice are called, so it is valid . // for the returned reference to be mutable in the case of . // `IterMut` 15,200 ( 0.00%) unsafe { & $( $mut_ )? * self.ptr.as_ptr().add(idx) } . } . . $($extra)* . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl<'a, T> DoubleEndedIterator for $name<'a, T> { . #[inline] -- line 348 ---------------------------------------- -- line 351 ---------------------------------------- . . // SAFETY: `assume` calls are safe since a slice's start pointer must be non-null, . // and slices over non-ZSTs must also have a non-null end pointer. . // The call to `next_back_unchecked!` is safe since we check if the iterator is . // empty first. . unsafe { . assume(!self.ptr.as_ptr().is_null()); . if mem::size_of::() != 0 { 4 ( 0.00%) assume(!self.end.is_null()); . } 746,924 ( 0.04%) if is_empty!(self) { . None . } else { . Some(next_back_unchecked!(self)) . } . } . } . . #[inline] -- line 369 ---------------------------------------- 5,498,542 ( 0.32%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_const_eval/src/interpret/operand.rs -------------------------------------------------------------------------------- Ir -- line 55 ---------------------------------------- . Immediate::Scalar(ScalarMaybeUninit::from_pointer(p, cx)) . } . . pub fn from_maybe_pointer(p: Pointer>, cx: &impl HasDataLayout) -> Self { . Immediate::Scalar(ScalarMaybeUninit::from_maybe_pointer(p, cx)) . } . . pub fn new_slice(val: Scalar, len: u64, cx: &impl HasDataLayout) -> Self { 12 ( 0.00%) Immediate::ScalarPair(val.into(), Scalar::from_machine_usize(len, cx).into()) . } . . pub fn new_dyn_trait( . val: Scalar, . vtable: Pointer>, . cx: &impl HasDataLayout, . ) -> Self { . Immediate::ScalarPair(val.into(), ScalarMaybeUninit::from_maybe_pointer(vtable, cx)) . } . . #[inline] . pub fn to_scalar_or_uninit(self) -> ScalarMaybeUninit { 113,000 ( 0.01%) match self { 167,948 ( 0.01%) Immediate::Scalar(val) => val, . Immediate::ScalarPair(..) => bug!("Got a scalar pair where a scalar was expected"), . } . } . . #[inline] . pub fn to_scalar(self) -> InterpResult<'tcx, Scalar> { . self.to_scalar_or_uninit().check_init() . } -- line 85 ---------------------------------------- -- line 159 ---------------------------------------- . fn deref(&self) -> &Immediate { . &self.imm . } . } . . /// An `Operand` is the result of computing a `mir::Operand`. It can be immediate, . /// or still in memory. The latter is an optimization, to delay reading that chunk of . /// memory and to avoid having to store arbitrary-sized data here. 13 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, HashStable, Hash, Debug)] . pub enum Operand { . Immediate(Immediate), . Indirect(MemPlace), . } . . #[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)] . pub struct OpTy<'tcx, Tag: Provenance = AllocId> { . op: Operand, // Keep this private; it helps enforce invariants. -- line 175 ---------------------------------------- -- line 185 ---------------------------------------- . fn deref(&self) -> &Operand { . &self.op . } . } . . impl<'tcx, Tag: Provenance> From> for OpTy<'tcx, Tag> { . #[inline(always)] . fn from(mplace: MPlaceTy<'tcx, Tag>) -> Self { 208 ( 0.00%) OpTy { op: Operand::Indirect(*mplace), layout: mplace.layout } . } . } . . impl<'tcx, Tag: Provenance> From<&'_ MPlaceTy<'tcx, Tag>> for OpTy<'tcx, Tag> { . #[inline(always)] . fn from(mplace: &MPlaceTy<'tcx, Tag>) -> Self { . OpTy { op: Operand::Indirect(**mplace), layout: mplace.layout } . } -- line 201 ---------------------------------------- -- line 248 ---------------------------------------- . . impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { . /// Try reading an immediate in memory; this is interesting particularly for `ScalarPair`. . /// Returns `None` if the layout does not permit loading this as a value. . fn try_read_immediate_from_mplace( . &self, . mplace: &MPlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, Option>> { 76,697 ( 0.00%) if mplace.layout.is_unsized() { . // Don't touch unsized . return Ok(None); . } . 201,075 ( 0.01%) let alloc = match self.get_alloc(mplace)? { 335,125 ( 0.02%) Some(ptr) => ptr, . None => { . return Ok(Some(ImmTy { . // zero-sized type . imm: Scalar::ZST.into(), . layout: mplace.layout, . })); . } . }; . 534,520 ( 0.03%) match mplace.layout.abi { . Abi::Scalar(..) => { 61,349 ( 0.00%) let scalar = alloc.read_scalar(alloc_range(Size::ZERO, mplace.layout.size))?; . Ok(Some(ImmTy { imm: scalar.into(), layout: mplace.layout })) . } 2,520 ( 0.00%) Abi::ScalarPair(a, b) => { . // We checked `ptr_align` above, so all fields will have the alignment they need. . // We would anyway check against `ptr_align.restrict_for_offset(b_offset)`, . // which `ptr.offset(b_offset)` cannot possibly fail to satisfy. . let (a, b) = (a.value, b.value); . let (a_size, b_size) = (a.size(self), b.size(self)); . let b_offset = a_size.align_to(b.align(self).abi); 1,680 ( 0.00%) assert!(b_offset.bytes() > 0); // we later use the offset to tell apart the fields . let a_val = alloc.read_scalar(alloc_range(Size::ZERO, a_size))?; 2,520 ( 0.00%) let b_val = alloc.read_scalar(alloc_range(b_offset, b_size))?; 4,200 ( 0.00%) Ok(Some(ImmTy { imm: Immediate::ScalarPair(a_val, b_val), layout: mplace.layout })) . } . _ => Ok(None), . } . } . . /// Try returning an immediate for the operand. . /// If the layout does not permit loading this as an immediate, return where in memory . /// we can find the data. . /// Note that for a given layout, this operation will either always fail or always . /// succeed! Whether it succeeds depends on whether the layout can be represented . /// in an `Immediate`, not on which data is stored there currently. 705,474 ( 0.04%) pub fn try_read_immediate( . &self, . src: &OpTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, Result, MPlaceTy<'tcx, M::PointerTag>>> { 1,410,948 ( 0.08%) Ok(match src.try_as_mplace() { . Ok(ref mplace) => { 134,050 ( 0.01%) if let Some(val) = self.try_read_immediate_from_mplace(mplace)? { . Ok(val) . } else { . Err(*mplace) . } . } 113,610 ( 0.01%) Err(val) => Ok(val), . }) 705,474 ( 0.04%) } . . /// Read an immediate from a place, asserting that that is possible with the given layout. . #[inline(always)] . pub fn read_immediate( . &self, . op: &OpTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, ImmTy<'tcx, M::PointerTag>> { 184,205 ( 0.01%) if let Ok(imm) = self.try_read_immediate(op)? { 336,244 ( 0.02%) Ok(imm) . } else { . span_bug!(self.cur_span(), "primitive read failed for type: {:?}", op.layout.ty); . } . } . . /// Read a scalar from a place 461,857 ( 0.03%) pub fn read_scalar( . &self, . op: &OpTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, ScalarMaybeUninit> { 41,987 ( 0.00%) Ok(self.read_immediate(op)?.to_scalar_or_uninit()) 377,883 ( 0.02%) } . . /// Read a pointer from a place. . pub fn read_pointer( . &self, . op: &OpTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, Pointer>> { . Ok(self.scalar_to_ptr(self.read_scalar(op)?.check_init()?)) . } -- line 342 ---------------------------------------- -- line 345 ---------------------------------------- . pub fn read_str(&self, mplace: &MPlaceTy<'tcx, M::PointerTag>) -> InterpResult<'tcx, &str> { . let len = mplace.len(self)?; . let bytes = self.memory.read_bytes(mplace.ptr, Size::from_bytes(len))?; . let str = std::str::from_utf8(bytes).map_err(|err| err_ub!(InvalidStr(err)))?; . Ok(str) . } . . /// Projection functions 564,910 ( 0.03%) pub fn operand_field( . &self, . op: &OpTy<'tcx, M::PointerTag>, . field: usize, . ) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>> { . let base = match op.try_as_mplace() { . Ok(ref mplace) => { . // We can reuse the mplace field computation logic for indirect operands. . let field = self.mplace_field(mplace, field)?; 621,401 ( 0.04%) return Ok(field.into()); . } . Err(value) => value, . }; . . let field_layout = op.layout.field(self, field); . if field_layout.is_zst() { . let immediate = Scalar::ZST.into(); . return Ok(OpTy { op: Operand::Immediate(immediate), layout: field_layout }); -- line 370 ---------------------------------------- -- line 381 ---------------------------------------- . Immediate::Scalar(val) => span_bug!( . self.cur_span(), . "field access on non aggregate {:#?}, {:#?}", . val, . op.layout . ), . }; . Ok(OpTy { op: Operand::Immediate(immediate), layout: field_layout }) 508,419 ( 0.03%) } . . pub fn operand_index( . &self, . op: &OpTy<'tcx, M::PointerTag>, . index: u64, . ) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>> { . if let Ok(index) = usize::try_from(index) { . // We can just treat this as a field. -- line 397 ---------------------------------------- -- line 398 ---------------------------------------- . self.operand_field(op, index) . } else { . // Indexing into a big array. This must be an mplace. . let mplace = op.assert_mem_place(); . Ok(self.mplace_index(&mplace, index)?.into()) . } . } . 106,370 ( 0.01%) pub fn operand_downcast( . &self, . op: &OpTy<'tcx, M::PointerTag>, . variant: VariantIdx, . ) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>> { . // Downcasts only change the layout 164,390 ( 0.01%) Ok(match op.try_as_mplace() { 96,700 ( 0.01%) Ok(ref mplace) => self.mplace_downcast(mplace, variant)?.into(), . Err(..) => { . let layout = op.layout.for_variant(self, variant); . OpTy { layout, ..*op } . } . }) 87,030 ( 0.01%) } . . pub fn operand_projection( . &self, . base: &OpTy<'tcx, M::PointerTag>, . proj_elem: mir::PlaceElem<'tcx>, . ) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>> { . use rustc_middle::mir::ProjectionElem::*; . Ok(match proj_elem { -- line 427 ---------------------------------------- -- line 449 ---------------------------------------- . self.mplace_to_simd(&base.assert_mem_place()) . } . . /// Read from a local. Will not actually access the local if reading from a ZST. . /// Will not access memory, instead an indirect `Operand` is returned. . /// . /// This is public because it is used by [priroda](https://github.com/oli-obk/priroda) to get an . /// OpTy from a local 94,779 ( 0.01%) pub fn access_local( . &self, . frame: &super::Frame<'mir, 'tcx, M::PointerTag, M::FrameExtra>, . local: mir::Local, . layout: Option>, . ) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>> { . let layout = self.layout_of_local(frame, local, layout)?; 4,836 ( 0.00%) let op = if layout.is_zst() { . // Do not read from ZST, they might not be initialized . Operand::Immediate(Scalar::ZST.into()) . } else { . M::access_local(&self, frame, local)? . }; 136,903 ( 0.01%) Ok(OpTy { op, layout }) 84,248 ( 0.00%) } . . /// Every place can be read from, so we can turn them into an operand. . /// This will definitely return `Indirect` if the place is a `Ptr`, i.e., this . /// will never actually read from memory. . #[inline(always)] . pub fn place_to_op( . &self, . place: &PlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>> { 24 ( 0.00%) let op = match **place { . Place::Ptr(mplace) => Operand::Indirect(mplace), . Place::Local { frame, local } => { 108 ( 0.00%) *self.access_local(&self.stack()[frame], local, None)? . } . }; 84 ( 0.00%) Ok(OpTy { op, layout: place.layout }) . } . . // Evaluate a place with the goal of reading from it. This lets us sometimes . // avoid allocations. 84,040 ( 0.00%) pub fn eval_place_to_op( . &self, . place: mir::Place<'tcx>, . layout: Option>, . ) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>> { . // Do not use the layout passed in as argument if the base we are looking at . // here is not the entire place. 10,505 ( 0.00%) let layout = if place.projection.is_empty() { layout } else { None }; . 31,515 ( 0.00%) let base_op = self.access_local(self.frame(), place.local, layout)?; . . let op = place . .projection . .iter() . .try_fold(base_op, |op, elem| self.operand_projection(&op, elem))?; . . trace!("eval_place_to_op: got {:?}", *op); . // Sanity-check the type we ended up with. -- line 509 ---------------------------------------- -- line 510 ---------------------------------------- . debug_assert!(mir_assign_valid_types( . *self.tcx, . self.param_env, . self.layout_of(self.subst_from_current_frame_and_normalize_erasing_regions( . place.ty(&self.frame().body.local_decls, *self.tcx).ty . )?)?, . op.layout, . )); 31,515 ( 0.00%) Ok(op) 94,545 ( 0.01%) } . . /// Evaluate the operand, returning a place where you can then find the data. . /// If you already know the layout, you can save two table lookups . /// by passing it in here. . #[inline] 196,524 ( 0.01%) pub fn eval_operand( . &self, . mir_op: &mir::Operand<'tcx>, . layout: Option>, . ) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>> { . use rustc_middle::mir::Operand::*; 43,672 ( 0.00%) let op = match *mir_op { . // FIXME: do some more logic on `move` to invalidate the old location 52,525 ( 0.00%) Copy(place) | Move(place) => self.eval_place_to_op(place, layout)?, . . Constant(ref constant) => { . let val = 169,965 ( 0.01%) self.subst_from_current_frame_and_normalize_erasing_regions(constant.literal)?; . // This can still fail: . // * During ConstProp, with `TooGeneric` or since the `requried_consts` were not all . // checked yet. . // * During CTFE, since promoteds in `const`/`static` initializer bodies can fail. . . self.mir_const_to_op(&val, layout)? . } . }; . trace!("{:?}: {:?}", mir_op, *op); 283,868 ( 0.02%) Ok(op) 131,016 ( 0.01%) } . . /// Evaluate a bunch of operands at once . pub(super) fn eval_operands( . &self, . ops: &[mir::Operand<'tcx>], . ) -> InterpResult<'tcx, Vec>> { . ops.iter().map(|op| self.eval_operand(op, None)).collect() . } . . // Used when the miri-engine runs into a constant and for extracting information from constants . // in patterns via the `const_eval` module . /// The `val` and `layout` are assumed to already be in our interpreter . /// "universe" (param_env). 135,972 ( 0.01%) pub fn const_to_op( . &self, . val: &ty::Const<'tcx>, . layout: Option>, . ) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>> { 56,655 ( 0.00%) match val.val { . ty::ConstKind::Param(_) | ty::ConstKind::Bound(..) => throw_inval!(TooGeneric), . ty::ConstKind::Error(_) => throw_inval!(AlreadyReported(ErrorReported)), . ty::ConstKind::Unevaluated(uv) => { . let instance = self.resolve(uv.def, uv.substs)?; . Ok(self.eval_to_allocation(GlobalId { instance, promoted: uv.promoted })?.into()) . } . ty::ConstKind::Infer(..) | ty::ConstKind::Placeholder(..) => { . span_bug!(self.cur_span(), "const_to_op: Unexpected ConstKind {:?}", val) . } 113,310 ( 0.01%) ty::ConstKind::Value(val_val) => self.const_val_to_op(val_val, val.ty, layout), . } 101,979 ( 0.01%) } . . pub fn mir_const_to_op( . &self, . val: &mir::ConstantKind<'tcx>, . layout: Option>, . ) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>> { 22,662 ( 0.00%) match val { 45,324 ( 0.00%) mir::ConstantKind::Ty(ct) => self.const_to_op(ct, layout), . mir::ConstantKind::Val(val, ty) => self.const_val_to_op(*val, ty, layout), . } . } . 113,310 ( 0.01%) crate fn const_val_to_op( . &self, . val_val: ConstValue<'tcx>, . ty: Ty<'tcx>, . layout: Option>, . ) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>> { . // Other cases need layout. . let tag_scalar = |scalar| -> InterpResult<'tcx, _> { 67,986 ( 0.00%) Ok(match scalar { . Scalar::Ptr(ptr, size) => Scalar::Ptr(self.global_base_pointer(ptr)?, size), 33,975 ( 0.00%) Scalar::Int(int) => Scalar::Int(int), . }) . }; . let layout = from_known_layout(self.tcx, self.param_env, layout, || self.layout_of(ty))?; 33,993 ( 0.00%) let op = match val_val { . ConstValue::ByRef { alloc, offset } => { . let id = self.tcx.create_memory_alloc(alloc); . // We rely on mutability being set correctly in that allocation to prevent writes . // where none should happen. . let ptr = self.global_base_pointer(Pointer::new(id, offset))?; . Operand::Indirect(MemPlace::from_ptr(ptr.into(), layout.align.abi)) . } 101,979 ( 0.01%) ConstValue::Scalar(x) => Operand::Immediate(tag_scalar(x)?.into()), . ConstValue::Slice { data, start, end } => { . // We rely on mutability being set correctly in `data` to prevent writes . // where none should happen. . let ptr = Pointer::new( . self.tcx.create_memory_alloc(data), . Size::from_bytes(start), // offset: `start` . ); . Operand::Immediate(Immediate::new_slice( . Scalar::from_pointer(self.global_base_pointer(ptr)?, &*self.tcx), . u64::try_from(end.checked_sub(start).unwrap()).unwrap(), // len: `end - start` . self, . )) . } . }; 237,951 ( 0.01%) Ok(OpTy { op, layout }) 90,648 ( 0.01%) } . . /// Read discriminant, return the runtime value as well as the variant index. . /// Can also legally be called on non-enums (e.g. through the discriminant_value intrinsic)! 145,070 ( 0.01%) pub fn read_discriminant( . &self, . op: &OpTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, (Scalar, VariantIdx)> { . trace!("read_discriminant_value {:#?}", op.layout); . // Get type and layout of the discriminant. 174,084 ( 0.01%) let discr_layout = self.layout_of(op.layout.ty.discriminant_ty(*self.tcx))?; . trace!("discriminant type: {:?}", discr_layout.ty); . . // We use "discriminant" to refer to the value associated with a particular enum variant. . // This is not to be confused with its "variant index", which is just determining its position in the . // declared list of variants -- they can differ with explicitly assigned discriminants. . // We use "tag" to refer to how the discriminant is encoded in memory, which can be either . // straight-forward (`TagEncoding::Direct`) or with a niche (`TagEncoding::Niche`). 43,521 ( 0.00%) let (tag_scalar_layout, tag_encoding, tag_field) = match op.layout.variants { . Variants::Single { index } => { . let discr = match op.layout.ty.discriminant_for_variant(*self.tcx, index) { . Some(discr) => { . // This type actually has discriminants. . assert_eq!(discr.ty, discr_layout.ty); . Scalar::from_uint(discr.val, discr_layout.size) . } . None => { . // On a type without actual discriminants, variant is 0. . assert_eq!(index.as_u32(), 0); . Scalar::from_uint(index.as_u32(), discr_layout.size) . } . }; . return Ok((discr, index)); . } 29,014 ( 0.00%) Variants::Multiple { tag, ref tag_encoding, tag_field, .. } => { . (tag, tag_encoding, tag_field) . } . }; . . // There are *three* layouts that come into play here: . // - The discriminant has a type for typechecking. This is `discr_layout`, and is used for . // the `Scalar` we return. . // - The tag (encoded discriminant) has layout `tag_layout`. This is always an integer type, . // and used to interpret the value we read from the tag field. . // For the return value, a cast to `discr_layout` is performed. . // - The field storing the tag has a layout, which is very similar to `tag_layout` but . // may be a pointer. This is `tag_val.layout`; we just use it for sanity checks. . . // Get layout for tag. 87,042 ( 0.01%) let tag_layout = self.layout_of(tag_scalar_layout.value.to_int_ty(*self.tcx))?; . . // Read tag and sanity-check `tag_layout`. 101,549 ( 0.01%) let tag_val = self.read_immediate(&self.operand_field(op, tag_field)?)?; 29,014 ( 0.00%) assert_eq!(tag_layout.size, tag_val.layout.size); 116,056 ( 0.01%) assert_eq!(tag_layout.abi.is_signed(), tag_val.layout.abi.is_signed()); . let tag_val = tag_val.to_scalar()?; . trace!("tag value: {:?}", tag_val); . . // Figure out which discriminant and variant this corresponds to. 130,563 ( 0.01%) Ok(match *tag_encoding { . TagEncoding::Direct => { 290,140 ( 0.02%) let tag_bits = tag_val . .try_to_int() . .map_err(|dbg_val| err_ub!(InvalidTag(dbg_val)))? . .assert_bits(tag_layout.size); . // Cast bits from tag layout to discriminant layout. 116,056 ( 0.01%) let discr_val = self.cast_from_scalar(tag_bits, tag_layout, discr_layout.ty); 29,014 ( 0.00%) let discr_bits = discr_val.assert_bits(discr_layout.size); . // Convert discriminant to variant index, and catch invalid discriminants. 72,535 ( 0.00%) let index = match *op.layout.ty.kind() { 14,507 ( 0.00%) ty::Adt(adt, _) => { 547,550 ( 0.03%) adt.discriminants(*self.tcx).find(|(_, var)| var.val == discr_bits) . } . ty::Generator(def_id, substs, _) => { . let substs = substs.as_generator(); . substs . .discriminants(def_id, *self.tcx) . .find(|(_, var)| var.val == discr_bits) . } . _ => span_bug!(self.cur_span(), "tagged layout for non-adt non-generator"), . } . .ok_or_else(|| err_ub!(InvalidTag(Scalar::from_uint(tag_bits, tag_layout.size))))?; . // Return the cast value, and the index. 58,028 ( 0.00%) (discr_val, index.0) . } . TagEncoding::Niche { dataful_variant, ref niche_variants, niche_start } => { . // Compute the variant this niche value/"tag" corresponds to. With niche layout, . // discriminant (encoded in niche/tag) and variant index are the same. . let variants_start = niche_variants.start().as_u32(); . let variants_end = niche_variants.end().as_u32(); . let variant = match tag_val.try_to_int() { . Err(dbg_val) => { -- line 721 ---------------------------------------- -- line 766 ---------------------------------------- . } . }; . // Compute the size of the scalar we need to return. . // No need to cast, because the variant index directly serves as discriminant and is . // encoded in the tag. . (Scalar::from_uint(variant.as_u32(), discr_layout.size), variant) . } . }) 130,563 ( 0.01%) } . } 1,972,903 ( 0.11%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_serialize/src/opaque.rs -------------------------------------------------------------------------------- Ir -- line 14 ---------------------------------------- . . pub type EncodeResult = Result<(), !>; . . pub struct Encoder { . pub data: Vec, . } . . impl Encoder { 1 ( 0.00%) pub fn new(data: Vec) -> Encoder { 4 ( 0.00%) Encoder { data } 1 ( 0.00%) } . 1 ( 0.00%) pub fn into_inner(self) -> Vec { 4 ( 0.00%) self.data 1 ( 0.00%) } . . #[inline] . pub fn position(&self) -> usize { 56,690 ( 0.00%) self.data.len() . } . } . . macro_rules! write_leb128 { . ($enc:expr, $value:expr, $int_ty:ty, $fun:ident) => {{ . const MAX_ENCODED_LEN: usize = max_leb128_len!($int_ty); . let old_len = $enc.data.len(); . -- line 40 ---------------------------------------- -- line 67 ---------------------------------------- . . #[inline] . fn emit_unit(&mut self) -> EncodeResult { . Ok(()) . } . . #[inline] . fn emit_usize(&mut self, v: usize) -> EncodeResult { 2,160,335 ( 0.13%) write_leb128!(self, v, usize, write_usize_leb128) . } . . #[inline] . fn emit_u128(&mut self, v: u128) -> EncodeResult { 79,373 ( 0.00%) write_leb128!(self, v, u128, write_u128_leb128) . } . . #[inline] . fn emit_u64(&mut self, v: u64) -> EncodeResult { 1,022 ( 0.00%) write_leb128!(self, v, u64, write_u64_leb128) . } . . #[inline] . fn emit_u32(&mut self, v: u32) -> EncodeResult { 1,835,812 ( 0.11%) write_leb128!(self, v, u32, write_u32_leb128) . } . . #[inline] . fn emit_u16(&mut self, v: u16) -> EncodeResult { . self.data.extend_from_slice(&v.to_le_bytes()); . Ok(()) . } . -- line 98 ---------------------------------------- -- line 131 ---------------------------------------- . #[inline] . fn emit_i8(&mut self, v: i8) -> EncodeResult { . let as_u8: u8 = unsafe { std::mem::transmute(v) }; . self.emit_u8(as_u8) . } . . #[inline] . fn emit_bool(&mut self, v: bool) -> EncodeResult { 22,743 ( 0.00%) self.emit_u8(if v { 1 } else { 0 }) . } . . #[inline] . fn emit_f64(&mut self, v: f64) -> EncodeResult { . let as_u64: u64 = v.to_bits(); . self.emit_u64(as_u64) . } . -- line 147 ---------------------------------------- -- line 549 ---------------------------------------- . #[inline] . pub fn advance(&mut self, bytes: usize) { . self.position += bytes; . } . . #[inline] . pub fn read_raw_bytes(&mut self, bytes: usize) -> &'a [u8] { . let start = self.position; 3 ( 0.00%) self.position += bytes; 3 ( 0.00%) &self.data[start..self.position] . } . } . . macro_rules! read_leb128 { . ($dec:expr, $fun:ident) => {{ leb128::$fun($dec.data, &mut $dec.position) }}; . } . . impl<'a> serialize::Decoder for Decoder<'a> { . #[inline] . fn read_unit(&mut self) -> () { . () . } . . #[inline] . fn read_u128(&mut self) -> u128 { 313 ( 0.00%) read_leb128!(self, read_u128_leb128) . } . . #[inline] . fn read_u64(&mut self) -> u64 { 828 ( 0.00%) read_leb128!(self, read_u64_leb128) . } . . #[inline] 17,545 ( 0.00%) fn read_u32(&mut self) -> u32 { 71,277 ( 0.00%) read_leb128!(self, read_u32_leb128) 35,090 ( 0.00%) } . . #[inline] . fn read_u16(&mut self) -> u16 { 561,386 ( 0.03%) let bytes = [self.data[self.position], self.data[self.position + 1]]; 80,198 ( 0.00%) let value = u16::from_le_bytes(bytes); 160,396 ( 0.01%) self.position += 2; . value . } . . #[inline] . fn read_u8(&mut self) -> u8 { 1,080,137 ( 0.06%) let value = self.data[self.position]; 211,290 ( 0.01%) self.position += 1; . value . } . . #[inline] 97,136 ( 0.01%) fn read_usize(&mut self) -> usize { 97,262 ( 0.01%) read_leb128!(self, read_usize_leb128) 194,272 ( 0.01%) } . . #[inline] . fn read_i128(&mut self) -> i128 { . read_leb128!(self, read_i128_leb128) . } . . #[inline] . fn read_i64(&mut self) -> i64 { -- line 613 ---------------------------------------- -- line 637 ---------------------------------------- . #[inline] . fn read_isize(&mut self) -> isize { . read_leb128!(self, read_isize_leb128) . } . . #[inline] . fn read_bool(&mut self) -> bool { . let value = self.read_u8(); 12,925 ( 0.00%) value != 0 . } . . #[inline] . fn read_f64(&mut self) -> f64 { . let bits = self.read_u64(); . f64::from_bits(bits) . } . -- line 653 ---------------------------------------- -- line 660 ---------------------------------------- . #[inline] . fn read_char(&mut self) -> char { . let bits = self.read_u32(); . std::char::from_u32(bits).unwrap() . } . . #[inline] . fn read_str(&mut self) -> Cow<'_, str> { 13,954 ( 0.00%) let len = self.read_usize(); 85,830 ( 0.00%) let sentinel = self.data[self.position + len]; 21,552 ( 0.00%) assert!(sentinel == STR_SENTINEL); . let s = unsafe { . std::str::from_utf8_unchecked(&self.data[self.position..self.position + len]) . }; 53,880 ( 0.00%) self.position += len + 1; 9,912 ( 0.00%) Cow::Borrowed(s) . } . . #[inline] . fn read_raw_bytes_into(&mut self, s: &mut [u8]) { 103 ( 0.00%) let start = self.position; 625 ( 0.00%) self.position += s.len(); 103 ( 0.00%) s.copy_from_slice(&self.data[start..self.position]); . } . } . . // Specializations for contiguous byte sequences follow. The default implementations for slices . // encode and decode each element individually. This isn't necessary for `u8` slices when using . // opaque encoders and decoders, because each `u8` is unchanged by encoding and decoding. . // Therefore, we can use more efficient implementations that process the entire sequence at once. . -- line 690 ---------------------------------------- 1,574,714 ( 0.09%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/mod.rs -------------------------------------------------------------------------------- Ir -- line 108 ---------------------------------------- . suppress_errors: bool, . }, . } . . impl RegionckMode { . /// Indicates that the MIR borrowck will repeat these region . /// checks, so we should ignore errors if NLL is (unconditionally) . /// enabled. 154 ( 0.00%) pub fn for_item_body(tcx: TyCtxt<'_>) -> Self { . // FIXME(Centril): Once we actually remove `::Migrate` also make . // this always `true` and then proceed to eliminate the dead code. 154 ( 0.00%) match tcx.borrowck_mode() { . // If we're on Migrate mode, report AST region errors . BorrowckMode::Migrate => RegionckMode::Erase { suppress_errors: false }, . . // If we're on MIR, don't report AST region errors as they should be reported by NLL . BorrowckMode::Mir => RegionckMode::Erase { suppress_errors: true }, . } 308 ( 0.00%) } . } . . /// This type contains all the things within `InferCtxt` that sit within a . /// `RefCell` and are involved with taking/rolling back snapshots. Snapshot . /// operations are hot enough that we want only one call to `borrow_mut` per . /// call to `start_snapshot` and `rollback_to`. . pub struct InferCtxtInner<'tcx> { . /// Cache for projections. This cache is snapshotted along with the infcx. -- line 134 ---------------------------------------- -- line 202 ---------------------------------------- . /// type instantiations (`ty::Infer`) to the actual opaque . /// type (`ty::Opaque`). Used during fallback to map unconstrained . /// opaque type inference variables to their corresponding . /// opaque type. . pub opaque_types_vars: FxHashMap, Ty<'tcx>>, . } . . impl<'tcx> InferCtxtInner<'tcx> { 18,045 ( 0.00%) fn new() -> InferCtxtInner<'tcx> { 122,706 ( 0.01%) InferCtxtInner { . projection_cache: Default::default(), . type_variable_storage: type_variable::TypeVariableStorage::new(), . undo_log: InferCtxtUndoLogs::default(), . const_unification_storage: ut::UnificationTableStorage::new(), . int_unification_storage: ut::UnificationTableStorage::new(), . float_unification_storage: ut::UnificationTableStorage::new(), 10,827 ( 0.00%) region_constraint_storage: Some(RegionConstraintStorage::new()), . region_obligations: vec![], . opaque_types: Default::default(), . opaque_types_vars: Default::default(), . } 21,654 ( 0.00%) } . . #[inline] . pub fn region_obligations(&self) -> &[(hir::HirId, RegionObligation<'tcx>)] { . &self.region_obligations . } . . #[inline] . pub fn projection_cache(&mut self) -> traits::ProjectionCache<'_, 'tcx> { 1,540 ( 0.00%) self.projection_cache.with_log(&mut self.undo_log) . } . . #[inline] . fn type_variables(&mut self) -> type_variable::TypeVariableTable<'_, 'tcx> { 322,785 ( 0.02%) self.type_variable_storage.with_log(&mut self.undo_log) . } . . #[inline] . fn int_unification_table( . &mut self, . ) -> ut::UnificationTable< . ut::InPlace< . ty::IntVid, . &mut ut::UnificationStorage, . &mut InferCtxtUndoLogs<'tcx>, . >, . > { 2,151 ( 0.00%) self.int_unification_storage.with_log(&mut self.undo_log) . } . . #[inline] . fn float_unification_table( . &mut self, . ) -> ut::UnificationTable< . ut::InPlace< . ty::FloatVid, -- line 258 ---------------------------------------- -- line 268 ---------------------------------------- . &mut self, . ) -> ut::UnificationTable< . ut::InPlace< . ty::ConstVid<'tcx>, . &mut ut::UnificationStorage>, . &mut InferCtxtUndoLogs<'tcx>, . >, . > { 1,042 ( 0.00%) self.const_unification_storage.with_log(&mut self.undo_log) . } . . #[inline] . pub fn unwrap_region_constraints(&mut self) -> RegionConstraintCollector<'_, 'tcx> { 21,399 ( 0.00%) self.region_constraint_storage . .as_mut() . .expect("region constraints already solved") 26,761 ( 0.00%) .with_log(&mut self.undo_log) . } . } . . pub struct InferCtxt<'a, 'tcx> { . pub tcx: TyCtxt<'tcx>, . . /// The `DefId` of the item in whose context we are performing inference or typeck. . /// It is used to check whether an opaque type use is a defining use. -- line 292 ---------------------------------------- -- line 361 ---------------------------------------- . /// item we are type-checking, and just consider those names as . /// part of the root universe. So this would only get incremented . /// when we enter into a higher-ranked (`for<..>`) type or trait . /// bound. . universe: Cell, . } . . /// See the `error_reporting` module for more details. 40,840 ( 0.00%) #[derive(Clone, Copy, Debug, PartialEq, Eq, TypeFoldable)] . pub enum ValuePairs<'tcx> { . Types(ExpectedFound>), . Regions(ExpectedFound>), . Consts(ExpectedFound<&'tcx ty::Const<'tcx>>), . TraitRefs(ExpectedFound>), . PolyTraitRefs(ExpectedFound>), . } . -- line 377 ---------------------------------------- -- line 383 ---------------------------------------- . pub struct TypeTrace<'tcx> { . cause: ObligationCause<'tcx>, . values: ValuePairs<'tcx>, . } . . /// The origin of a `r1 <= r2` constraint. . /// . /// See `error_reporting` module for more details 34,705 ( 0.00%) #[derive(Clone, Debug)] . pub enum SubregionOrigin<'tcx> { . /// Arose from a subtyping relation 1,978 ( 0.00%) Subtype(Box>), . . /// When casting `&'a T` to an `&'b Trait` object, . /// relating `'a` to `'b` . RelateObjectBound(Span), . . /// Some type parameter was instantiated with the given type, . /// and that type must outlive some region. 279 ( 0.00%) RelateParamBound(Span, Ty<'tcx>, Option), . . /// The given region parameter was instantiated with a region . /// that must outlive some other region. . RelateRegionParamBound(Span), . . /// Creating a pointer `b` to contents of another reference . Reborrow(Span), . . /// Creating a pointer `b` to contents of an upvar . ReborrowUpvar(Span, ty::UpvarId), . . /// Data with type `Ty<'tcx>` was borrowed 257 ( 0.00%) DataBorrowed(Ty<'tcx>, Span), . . /// (&'a &'b T) where a >= b 273 ( 0.00%) ReferenceOutlivesReferent(Ty<'tcx>, Span), . . /// Comparing the signature and requirements of an impl method against . /// the containing trait. . CompareImplMethodObligation { span: Span, impl_item_def_id: DefId, trait_item_def_id: DefId }, . . /// Comparing the signature and requirements of an impl associated type . /// against the containing trait . CompareImplTypeObligation { span: Span, impl_item_def_id: DefId, trait_item_def_id: DefId }, -- line 426 ---------------------------------------- -- line 554 ---------------------------------------- . defining_use_anchor: Option, . } . . pub trait TyCtxtInferExt<'tcx> { . fn infer_ctxt(self) -> InferCtxtBuilder<'tcx>; . } . . impl<'tcx> TyCtxtInferExt<'tcx> for TyCtxt<'tcx> { 3,609 ( 0.00%) fn infer_ctxt(self) -> InferCtxtBuilder<'tcx> { 10,827 ( 0.00%) InferCtxtBuilder { tcx: self, defining_use_anchor: None, fresh_typeck_results: None } 3,609 ( 0.00%) } . } . . impl<'tcx> InferCtxtBuilder<'tcx> { . /// Used only by `rustc_typeck` during body type-checking/inference, . /// will initialize `in_progress_typeck_results` with fresh `TypeckResults`. . /// Will also change the scope for opaque type defining use checks to the given owner. 4,122 ( 0.00%) pub fn with_fresh_in_progress_typeck_results(mut self, table_owner: LocalDefId) -> Self { 5,038 ( 0.00%) self.fresh_typeck_results = Some(RefCell::new(ty::TypeckResults::new(table_owner))); 2,290 ( 0.00%) self.with_opaque_type_inference(table_owner) 3,206 ( 0.00%) } . . /// Whenever the `InferCtxt` should be able to handle defining uses of opaque types, . /// you need to call this function. Otherwise the opaque type will be treated opaquely. . /// . /// It is only meant to be called in two places, for typeck . /// (via `with_fresh_in_progress_typeck_results`) and for the inference context used . /// in mir borrowck. 352 ( 0.00%) pub fn with_opaque_type_inference(mut self, defining_use_anchor: LocalDefId) -> Self { 176 ( 0.00%) self.defining_use_anchor = Some(defining_use_anchor); 1,268 ( 0.00%) self 528 ( 0.00%) } . . /// Given a canonical value `C` as a starting point, create an . /// inference context that contains each of the bound values . /// within instantiated as a fresh variable. The `f` closure is . /// invoked with the new infcx, along with the instantiated value . /// `V` and a substitution `S`. This substitution `S` maps from . /// the bound values in `C` to their instantiated values in `V` . /// (in other words, `S(C) = V`). 5,610 ( 0.00%) pub fn enter_with_canonical( . &mut self, . span: Span, . canonical: &Canonical<'tcx, T>, . f: impl for<'a> FnOnce(InferCtxt<'a, 'tcx>, T, CanonicalVarValues<'tcx>) -> R, . ) -> R . where . T: TypeFoldable<'tcx>, . { . self.enter(|infcx| { 7,806 ( 0.00%) let (value, subst) = 562 ( 0.00%) infcx.instantiate_canonical_with_fresh_inference_vars(span, canonical); 11,648 ( 0.00%) f(infcx, value, subst) . }) 6,075 ( 0.00%) } . 20,473 ( 0.00%) pub fn enter(&mut self, f: impl for<'a> FnOnce(InferCtxt<'a, 'tcx>) -> R) -> R { 9,959 ( 0.00%) let InferCtxtBuilder { tcx, defining_use_anchor, ref fresh_typeck_results } = *self; . let in_progress_typeck_results = fresh_typeck_results.as_ref(); 156,925 ( 0.01%) f(InferCtxt { . tcx, . defining_use_anchor, . in_progress_typeck_results, 3,609 ( 0.00%) inner: RefCell::new(InferCtxtInner::new()), . lexical_region_resolutions: RefCell::new(None), . selection_cache: Default::default(), . evaluation_cache: Default::default(), . reported_trait_errors: Default::default(), . reported_closure_mismatch: Default::default(), . tainted_by_errors_flag: Cell::new(false), 3,609 ( 0.00%) err_count_on_creation: tcx.sess.err_count(), . in_snapshot: Cell::new(false), . skip_leak_check: Cell::new(false), . universe: Cell::new(ty::UniverseIndex::ROOT), . }) 21,609 ( 0.00%) } . } . . impl<'tcx, T> InferOk<'tcx, T> { . pub fn unit(self) -> InferOk<'tcx, ()> { . InferOk { value: (), obligations: self.obligations } . } . . /// Extracts `value`, registering any obligations into `fulfill_cx`. . pub fn into_value_registering_obligations( . self, . infcx: &InferCtxt<'_, 'tcx>, . fulfill_cx: &mut dyn TraitEngine<'tcx>, . ) -> T { 53 ( 0.00%) let InferOk { value, obligations } = self; 238 ( 0.00%) for obligation in obligations { . fulfill_cx.register_predicate_obligation(infcx, obligation); . } . value . } . } . . impl<'tcx> InferOk<'tcx, ()> { 14,308 ( 0.00%) pub fn into_obligations(self) -> PredicateObligations<'tcx> { 57,232 ( 0.00%) self.obligations 14,308 ( 0.00%) } . } . . #[must_use = "once you start a snapshot, you should always consume it"] . pub struct CombinedSnapshot<'a, 'tcx> { . undo_snapshot: Snapshot<'tcx>, . region_constraints_snapshot: RegionSnapshot, . universe: ty::UniverseIndex, . was_in_snapshot: bool, -- line 662 ---------------------------------------- -- line 674 ---------------------------------------- . let canonical = self.canonicalize_query((a, b), &mut OriginalQueryValues::default()); . debug!("canonical consts: {:?}", &canonical.value); . . self.tcx.try_unify_abstract_consts(canonical.value) . } . . pub fn is_in_snapshot(&self) -> bool { . self.in_snapshot.get() 11,873 ( 0.00%) } . 175,952 ( 0.01%) pub fn freshen>(&self, t: T) -> T { 197,946 ( 0.01%) t.fold_with(&mut self.freshener()) 197,946 ( 0.01%) } . . /// Returns the origin of the type variable identified by `vid`, or `None` . /// if this is not a type variable. . /// . /// No attempt is made to resolve `ty`. 322 ( 0.00%) pub fn type_var_origin(&'a self, ty: Ty<'tcx>) -> Option { 644 ( 0.00%) match *ty.kind() { 161 ( 0.00%) ty::Infer(ty::TyVar(vid)) => { 644 ( 0.00%) Some(*self.inner.borrow_mut().type_variables().var_origin(vid)) . } . _ => None, . } 644 ( 0.00%) } . 21,994 ( 0.00%) pub fn freshener<'b>(&'b self) -> TypeFreshener<'b, 'tcx> { . freshen::TypeFreshener::new(self, false) 21,994 ( 0.00%) } . . /// Like `freshener`, but does not replace `'static` regions. 49,807 ( 0.00%) pub fn freshener_keep_static<'b>(&'b self) -> TypeFreshener<'b, 'tcx> { . freshen::TypeFreshener::new(self, true) 49,807 ( 0.00%) } . 748 ( 0.00%) pub fn unsolved_variables(&self) -> Vec> { 374 ( 0.00%) let mut inner = self.inner.borrow_mut(); 374 ( 0.00%) let mut vars: Vec> = inner . .type_variables() . .unsolved_variables() . .into_iter() 322 ( 0.00%) .map(|t| self.tcx.mk_ty_var(t)) . .collect(); . vars.extend( . (0..inner.int_unification_table().len()) . .map(|i| ty::IntVid { index: i as u32 }) 166 ( 0.00%) .filter(|&vid| inner.int_unification_table().probe_value(vid).is_none()) . .map(|v| self.tcx.mk_int_var(v)), . ); . vars.extend( . (0..inner.float_unification_table().len()) . .map(|i| ty::FloatVid { index: i as u32 }) . .filter(|&vid| inner.float_unification_table().probe_value(vid).is_none()) . .map(|v| self.tcx.mk_float_var(v)), . ); . vars 1,309 ( 0.00%) } . 44,672 ( 0.00%) fn combine_fields( . &'a self, . trace: TypeTrace<'tcx>, . param_env: ty::ParamEnv<'tcx>, . ) -> CombineFields<'a, 'tcx> { 178,704 ( 0.01%) CombineFields { . infcx: self, 446,760 ( 0.03%) trace, . cause: None, . param_env, . obligations: PredicateObligations::new(), . } 44,672 ( 0.00%) } . . /// Clear the "currently in a snapshot" flag, invoke the closure, . /// then restore the flag to its original value. This flag is a . /// debugging measure designed to detect cases where we start a . /// snapshot, create type variables, and register obligations . /// which may involve those type variables in the fulfillment cx, . /// potentially leaving "dangling type variables" behind. . /// In such cases, an assertion will fail when attempting to -- line 753 ---------------------------------------- -- line 760 ---------------------------------------- . /// before we return, this is not a problem, as there won't be any . /// escaping obligations in the main cx. In those cases, you can . /// use this function. . pub fn save_and_restore_in_snapshot_flag(&self, func: F) -> R . where . F: FnOnce(&Self) -> R, . { . let flag = self.in_snapshot.replace(false); 2,664 ( 0.00%) let result = func(self); . self.in_snapshot.set(flag); . result . } . 275,534 ( 0.02%) fn start_snapshot(&self) -> CombinedSnapshot<'a, 'tcx> { . debug!("start_snapshot()"); . . let in_snapshot = self.in_snapshot.replace(true); . . let mut inner = self.inner.borrow_mut(); . 826,602 ( 0.05%) CombinedSnapshot { . undo_snapshot: inner.undo_log.start_snapshot(), . region_constraints_snapshot: inner.unwrap_region_constraints().start_snapshot(), . universe: self.universe(), . was_in_snapshot: in_snapshot, . // Borrow typeck results "in progress" (i.e., during typeck) . // to ban writes from within a snapshot to them. 137,767 ( 0.01%) _in_progress_typeck_results: self . .in_progress_typeck_results . .map(|typeck_results| typeck_results.borrow()), . } 551,068 ( 0.03%) } . 254,188 ( 0.01%) #[instrument(skip(self, snapshot), level = "debug")] . fn rollback_to(&self, cause: &str, snapshot: CombinedSnapshot<'a, 'tcx>) { . let CombinedSnapshot { 23,108 ( 0.00%) undo_snapshot, 23,108 ( 0.00%) region_constraints_snapshot, 23,108 ( 0.00%) universe, 23,108 ( 0.00%) was_in_snapshot, 46,216 ( 0.00%) _in_progress_typeck_results, . } = snapshot; . . self.in_snapshot.set(was_in_snapshot); . self.universe.set(universe); . . let mut inner = self.inner.borrow_mut(); 23,108 ( 0.00%) inner.rollback_to(undo_snapshot); . inner.unwrap_region_constraints().rollback_to(region_constraints_snapshot); . } . 1,719,885 ( 0.10%) #[instrument(skip(self, snapshot), level = "debug")] . fn commit_from(&self, snapshot: CombinedSnapshot<'a, 'tcx>) { . let CombinedSnapshot { 114,659 ( 0.01%) undo_snapshot, . region_constraints_snapshot: _, . universe: _, 114,659 ( 0.01%) was_in_snapshot, 229,318 ( 0.01%) _in_progress_typeck_results, . } = snapshot; . . self.in_snapshot.set(was_in_snapshot); . . self.inner.borrow_mut().commit(undo_snapshot); . } . . /// Executes `f` and commit the bindings. 14,604 ( 0.00%) #[instrument(skip(self, f), level = "debug")] 17,974 ( 0.00%) pub fn commit_unconditionally(&self, f: F) -> R . where . F: FnOnce(&CombinedSnapshot<'a, 'tcx>) -> R, . { 1,634 ( 0.00%) let snapshot = self.start_snapshot(); 5,444 ( 0.00%) let r = f(&snapshot); 11,438 ( 0.00%) self.commit_from(snapshot); 9,670 ( 0.00%) r . } . . /// Execute `f` and commit the bindings if closure `f` returns `Ok(_)`. 523,958 ( 0.03%) #[instrument(skip(self, f), level = "debug")] 652,983 ( 0.04%) pub fn commit_if_ok(&self, f: F) -> Result . where . F: FnOnce(&CombinedSnapshot<'a, 'tcx>) -> Result, . { 151,117 ( 0.01%) let snapshot = self.start_snapshot(); 303,924 ( 0.02%) let r = f(&snapshot); . debug!("commit_if_ok() -- r.is_ok() = {}", r.is_ok()); 191,724 ( 0.01%) match r { . Ok(_) => { 793,205 ( 0.05%) self.commit_from(snapshot); . } . Err(_) => { 191,161 ( 0.01%) self.rollback_to("commit_if_ok -- error", snapshot); . } . } 932,961 ( 0.05%) r . } . . /// Execute `f` then unroll any bindings it creates. 26,429 ( 0.00%) #[instrument(skip(self, f), level = "debug")] 30,916 ( 0.00%) pub fn probe(&self, f: F) -> R . where . F: FnOnce(&CombinedSnapshot<'a, 'tcx>) -> R, . { 7,237 ( 0.00%) let snapshot = self.start_snapshot(); 11,925 ( 0.00%) let r = f(&snapshot); 35,883 ( 0.00%) self.rollback_to("probe", snapshot); 10,058 ( 0.00%) r . } . . /// If `should_skip` is true, then execute `f` then unroll any bindings it creates. . #[instrument(skip(self, f), level = "debug")] . pub fn probe_maybe_skip_leak_check(&self, should_skip: bool, f: F) -> R . where . F: FnOnce(&CombinedSnapshot<'a, 'tcx>) -> R, . { -- line 875 ---------------------------------------- -- line 884 ---------------------------------------- . r . } . . /// Scan the constraints produced since `snapshot` began and returns: . /// . /// - `None` -- if none of them involve "region outlives" constraints . /// - `Some(true)` -- if there are `'a: 'b` constraints where `'a` or `'b` is a placeholder . /// - `Some(false)` -- if there are `'a: 'b` constraints but none involve placeholders 1,878 ( 0.00%) pub fn region_constraints_added_in_snapshot( . &self, . snapshot: &CombinedSnapshot<'a, 'tcx>, . ) -> Option { 3,756 ( 0.00%) self.inner . .borrow_mut() . .unwrap_region_constraints() . .region_constraints_added_in_snapshot(&snapshot.undo_snapshot) 2,817 ( 0.00%) } . . pub fn add_given(&self, sub: ty::Region<'tcx>, sup: ty::RegionVid) { . self.inner.borrow_mut().unwrap_region_constraints().add_given(sub, sup); . } . 516 ( 0.00%) pub fn can_sub(&self, param_env: ty::ParamEnv<'tcx>, a: T, b: T) -> UnitResult<'tcx> . where . T: at::ToTrace<'tcx>, . { . let origin = &ObligationCause::dummy(); . self.probe(|_| { . self.at(origin, param_env).sub(a, b).map(|InferOk { obligations: _, .. }| { . // Ignore obligations, since we are unrolling . // everything anyway. . }) . }) 387 ( 0.00%) } . 2,880 ( 0.00%) pub fn can_eq(&self, param_env: ty::ParamEnv<'tcx>, a: T, b: T) -> UnitResult<'tcx> . where . T: at::ToTrace<'tcx>, . { . let origin = &ObligationCause::dummy(); . self.probe(|_| { . self.at(origin, param_env).eq(a, b).map(|InferOk { obligations: _, .. }| { . // Ignore obligations, since we are unrolling . // everything anyway. . }) . }) 2,160 ( 0.00%) } . 16,840 ( 0.00%) #[instrument(skip(self), level = "debug")] . pub fn sub_regions( . &self, . origin: SubregionOrigin<'tcx>, . a: ty::Region<'tcx>, . b: ty::Region<'tcx>, . ) { 15,156 ( 0.00%) self.inner.borrow_mut().unwrap_region_constraints().make_subregion(origin, a, b); . } . . /// Require that the region `r` be equal to one of the regions in . /// the set `regions`. . #[instrument(skip(self), level = "debug")] . pub fn member_constraint( . &self, . opaque_type_def_id: DefId, -- line 947 ---------------------------------------- -- line 969 ---------------------------------------- . /// to `subtype_predicate` -- that is, "coercing" `a` to `b` winds up . /// actually requiring `a <: b`. This is of course a valid coercion, . /// but it's not as flexible as `FnCtxt::coerce` would be. . /// . /// (We may refactor this in the future, but there are a number of . /// practical obstacles. Among other things, `FnCtxt::coerce` presently . /// records adjustments that are required on the HIR in order to perform . /// the coercion, and we don't currently have a way to manage that.) 9 ( 0.00%) pub fn coerce_predicate( . &self, . cause: &ObligationCause<'tcx>, . param_env: ty::ParamEnv<'tcx>, . predicate: ty::PolyCoercePredicate<'tcx>, . ) -> Option> { 6 ( 0.00%) let subtype_predicate = predicate.map_bound(|p| ty::SubtypePredicate { . a_is_expected: false, // when coercing from `a` to `b`, `b` is expected . a: p.a, . b: p.b, . }); 15 ( 0.00%) self.subtype_predicate(cause, param_env, subtype_predicate) 12 ( 0.00%) } . 576 ( 0.00%) pub fn subtype_predicate( . &self, . cause: &ObligationCause<'tcx>, . param_env: ty::ParamEnv<'tcx>, . predicate: ty::PolySubtypePredicate<'tcx>, . ) -> Option> { . // Check for two unresolved inference variables, in which case we can . // make no progress. This is partly a micro-optimization, but it's . // also an opportunity to "sub-unify" the variables. This isn't -- line 999 ---------------------------------------- -- line 1002 ---------------------------------------- . // earlier that they are sub-unified). . // . // Note that we can just skip the binders here because . // type variables can't (at present, at . // least) capture any of the things bound by this binder. . // . // Note that this sub here is not just for diagnostics - it has semantic . // effects as well. 48 ( 0.00%) let r_a = self.shallow_resolve(predicate.skip_binder().a); 48 ( 0.00%) let r_b = self.shallow_resolve(predicate.skip_binder().b); 362 ( 0.00%) match (r_a.kind(), r_b.kind()) { 88 ( 0.00%) (&ty::Infer(ty::TyVar(a_vid)), &ty::Infer(ty::TyVar(b_vid))) => { . self.inner.borrow_mut().type_variables().sub(a_vid, b_vid); 88 ( 0.00%) return None; . } . _ => {} . } . . Some(self.commit_if_ok(|_snapshot| { 4 ( 0.00%) let ty::SubtypePredicate { a_is_expected, a, b } = . self.replace_bound_vars_with_placeholders(predicate); . 8 ( 0.00%) let ok = self.at(cause, param_env).sub_exp(a_is_expected, a, b)?; . . Ok(ok.unit()) . })) 432 ( 0.00%) } . 4,776 ( 0.00%) pub fn region_outlives_predicate( . &self, . cause: &traits::ObligationCause<'tcx>, . predicate: ty::PolyRegionOutlivesPredicate<'tcx>, . ) -> UnitResult<'tcx> { . self.commit_if_ok(|_snapshot| { . let ty::OutlivesPredicate(r_a, r_b) = . self.replace_bound_vars_with_placeholders(predicate); . let origin = SubregionOrigin::from_obligation_cause(cause, || { . RelateRegionParamBound(cause.span) . }); 3,980 ( 0.00%) self.sub_regions(origin, r_b, r_a); // `b : a` ==> `a <= b` . Ok(()) . }) 3,184 ( 0.00%) } . . /// Number of type variables created so far. 33 ( 0.00%) pub fn num_ty_vars(&self) -> usize { . self.inner.borrow_mut().type_variables().num_vars() 66 ( 0.00%) } . 39,374 ( 0.00%) pub fn next_ty_var_id(&self, origin: TypeVariableOrigin) -> TyVid { 196,870 ( 0.01%) self.inner.borrow_mut().type_variables().new_var(self.universe(), origin) 59,061 ( 0.00%) } . 39,018 ( 0.00%) pub fn next_ty_var(&self, origin: TypeVariableOrigin) -> Ty<'tcx> { 137,631 ( 0.01%) self.tcx.mk_ty_var(self.next_ty_var_id(origin)) 58,527 ( 0.00%) } . 218 ( 0.00%) pub fn next_ty_var_in_universe( . &self, . origin: TypeVariableOrigin, . universe: ty::UniverseIndex, . ) -> Ty<'tcx> { 1,199 ( 0.00%) let vid = self.inner.borrow_mut().type_variables().new_var(universe, origin); 109 ( 0.00%) self.tcx.mk_ty_var(vid) 327 ( 0.00%) } . . pub fn next_const_var( . &self, . ty: Ty<'tcx>, . origin: ConstVariableOrigin, . ) -> &'tcx ty::Const<'tcx> { . self.tcx.mk_const_var(self.next_const_var_id(origin), ty) . } -- line 1074 ---------------------------------------- -- line 1090 ---------------------------------------- . pub fn next_const_var_id(&self, origin: ConstVariableOrigin) -> ConstVid<'tcx> { . self.inner.borrow_mut().const_unification_table().new_key(ConstVarValue { . origin, . val: ConstVariableValue::Unknown { universe: self.universe() }, . }) . } . . fn next_int_var_id(&self) -> IntVid { 275 ( 0.00%) self.inner.borrow_mut().int_unification_table().new_key(None) . } . 165 ( 0.00%) pub fn next_int_var(&self) -> Ty<'tcx> { . self.tcx.mk_int_var(self.next_int_var_id()) 220 ( 0.00%) } . . fn next_float_var_id(&self) -> FloatVid { . self.inner.borrow_mut().float_unification_table().new_key(None) . } . . pub fn next_float_var(&self) -> Ty<'tcx> { . self.tcx.mk_float_var(self.next_float_var_id()) . } . . /// Creates a fresh region variable with the next available index. . /// The variable will be created in the maximum universe created . /// thus far, allowing it to name any region created thus far. 3,166 ( 0.00%) pub fn next_region_var(&self, origin: RegionVariableOrigin) -> ty::Region<'tcx> { 58,913 ( 0.00%) self.next_region_var_in_universe(origin, self.universe()) 6,332 ( 0.00%) } . . /// Creates a fresh region variable with the next available index . /// in the given universe; typically, you can use . /// `next_region_var` and just use the maximal universe. 23,314 ( 0.00%) pub fn next_region_var_in_universe( . &self, . origin: RegionVariableOrigin, . universe: ty::UniverseIndex, . ) -> ty::Region<'tcx> { . let region_var = 151,541 ( 0.01%) self.inner.borrow_mut().unwrap_region_constraints().new_region_var(universe, origin); 58,285 ( 0.00%) self.tcx.mk_region(ty::ReVar(region_var)) 34,971 ( 0.00%) } . . /// Return the universe that the region `r` was created in. For . /// most regions (e.g., `'static`, named regions from the user, . /// etc) this is the root universe U0. For inference variables or . /// placeholders, however, it will return the universe which which . /// they are associated. 2,810 ( 0.00%) pub fn universe_of_region(&self, r: ty::Region<'tcx>) -> ty::UniverseIndex { . self.inner.borrow_mut().unwrap_region_constraints().universe(r) 4,215 ( 0.00%) } . . /// Number of region variables created so far. 1,452 ( 0.00%) pub fn num_region_vars(&self) -> usize { . self.inner.borrow_mut().unwrap_region_constraints().num_region_vars() 2,178 ( 0.00%) } . . /// Just a convenient wrapper of `next_region_var` for using during NLL. 5,036 ( 0.00%) pub fn next_nll_region_var(&self, origin: NllRegionVariableOrigin) -> ty::Region<'tcx> { . self.next_region_var(RegionVariableOrigin::Nll(origin)) 10,072 ( 0.00%) } . . /// Just a convenient wrapper of `next_region_var` for using during NLL. 91 ( 0.00%) pub fn next_nll_region_var_in_universe( . &self, . origin: NllRegionVariableOrigin, . universe: ty::UniverseIndex, . ) -> ty::Region<'tcx> { 645 ( 0.00%) self.next_region_var_in_universe(RegionVariableOrigin::Nll(origin), universe) 182 ( 0.00%) } . 34,288 ( 0.00%) pub fn var_for_def(&self, span: Span, param: &ty::GenericParamDef) -> GenericArg<'tcx> { 18,942 ( 0.00%) match param.kind { . GenericParamDefKind::Lifetime => { . // Create a region inference variable for the given . // region parameter definition. 1,244 ( 0.00%) self.next_region_var(EarlyBoundRegion(span, param.name)).into() . } . GenericParamDefKind::Type { .. } => { . // Create a type inference variable for the given . // type parameter definition. The substitutions are . // for actual parameters that may be referred to by . // the default of this type parameter, if it exists. . // e.g., `struct Foo(...);` when . // used in a path such as `Foo::::new()` will . // use an inference variable for `C` with `[T, U]` . // as the substitutions for the default, `(T, U)`. 11,876 ( 0.00%) let ty_var_id = self.inner.borrow_mut().type_variables().new_var( . self.universe(), 14,845 ( 0.00%) TypeVariableOrigin { . kind: TypeVariableOriginKind::TypeParameterDefinition( 2,969 ( 0.00%) param.name, 2,969 ( 0.00%) Some(param.def_id), . ), . span, . }, . ); . 2,969 ( 0.00%) self.tcx.mk_ty_var(ty_var_id).into() . } . GenericParamDefKind::Const { .. } => { . let origin = ConstVariableOrigin { . kind: ConstVariableOriginKind::ConstParameterDefinition( . param.name, . param.def_id, . ), . span, . }; . let const_var_id = 803 ( 0.00%) self.inner.borrow_mut().const_unification_table().new_key(ConstVarValue { . origin, . val: ConstVariableValue::Unknown { universe: self.universe() }, . }); 73 ( 0.00%) self.tcx.mk_const_var(const_var_id, self.tcx.type_of(param.def_id)).into() . } . } 584 ( 0.00%) } . . /// Given a set of generics defined on a type or impl, returns a substitution mapping each . /// type/region parameter to a fresh inference variable. 7,179 ( 0.00%) pub fn fresh_substs_for_item(&self, span: Span, def_id: DefId) -> SubstsRef<'tcx> { 34,143 ( 0.00%) InternalSubsts::for_item(self.tcx, def_id, |param, _| self.var_for_def(span, param)) 4,786 ( 0.00%) } . . /// Returns `true` if errors have been reported since this infcx was . /// created. This is sometimes used as a heuristic to skip . /// reporting errors that often occur as a result of earlier . /// errors, but where it's hard to be 100% sure (e.g., unresolved . /// inference variables, regionck errors). 632 ( 0.00%) pub fn is_tainted_by_errors(&self) -> bool { . debug!( . "is_tainted_by_errors(err_count={}, err_count_on_creation={}, \ . tainted_by_errors_flag={})", . self.tcx.sess.err_count(), . self.err_count_on_creation, . self.tainted_by_errors_flag.get() . ); . 12,910 ( 0.00%) if self.tcx.sess.err_count() > self.err_count_on_creation { . return true; // errors reported since this infcx was made . } . self.tainted_by_errors_flag.get() 948 ( 0.00%) } . . /// Set the "tainted by errors" flag to true. We call this when we . /// observe an error from a prior pass. . pub fn set_tainted_by_errors(&self) { . debug!("set_tainted_by_errors()"); . self.tainted_by_errors_flag.set(true) . } . . /// Process the region constraints and return any any errors that . /// result. After this, no more unification operations should be . /// done -- or the compiler will panic -- but it is legal to use . /// `resolve_vars_if_possible` as well as `fully_resolve`. 12,481 ( 0.00%) pub fn resolve_regions( . &self, . region_context: DefId, . outlives_env: &OutlivesEnvironment<'tcx>, . mode: RegionckMode, . ) -> Vec> { 33,877 ( 0.00%) let (var_infos, data) = { . let mut inner = self.inner.borrow_mut(); . let inner = &mut *inner; 1,783 ( 0.00%) assert!( 5,349 ( 0.00%) self.is_tainted_by_errors() || inner.region_obligations.is_empty(), . "region_obligations not empty: {:#?}", . inner.region_obligations . ); . inner . .region_constraint_storage . .take() . .expect("regions already resolved") . .with_log(&mut inner.undo_log) . .into_infos_and_data() 1,783 ( 0.00%) }; . . let region_rels = 1,783 ( 0.00%) &RegionRelations::new(self.tcx, region_context, outlives_env.free_region_map()); . 16,047 ( 0.00%) let (lexical_region_resolutions, errors) = 42,792 ( 0.00%) lexical_region_resolve::resolve(region_rels, var_infos, data, mode); . 7,132 ( 0.00%) let old_value = self.lexical_region_resolutions.replace(Some(lexical_region_resolutions)); 1,783 ( 0.00%) assert!(old_value.is_none()); . . errors 16,047 ( 0.00%) } . . /// Process the region constraints and report any errors that . /// result. After this, no more unification operations should be . /// done -- or the compiler will panic -- but it is legal to use . /// `resolve_vars_if_possible` as well as `fully_resolve`. 17,830 ( 0.00%) pub fn resolve_regions_and_report_errors( . &self, . region_context: DefId, . outlives_env: &OutlivesEnvironment<'tcx>, . mode: RegionckMode, . ) { 3,566 ( 0.00%) let errors = self.resolve_regions(region_context, outlives_env, mode); . 5,349 ( 0.00%) if !self.is_tainted_by_errors() { . // As a heuristic, just skip reporting region errors . // altogether if other errors have been reported while . // this infcx was in use. This is totally hokey but . // otherwise we have a hard time separating legit region . // errors from silly ones. 3,566 ( 0.00%) self.report_region_errors(&errors); . } 8,915 ( 0.00%) } . . /// Obtains (and clears) the current set of region . /// constraints. The inference context is still usable: further . /// unifications will simply add new constraints. . /// . /// This method is not meant to be used with normal lexical region . /// resolution. Rather, it is used in the NLL mode as a kind of . /// interim hack: basically we run normal type-check and generate -- line 1307 ---------------------------------------- -- line 1319 ---------------------------------------- . } . . /// Gives temporary access to the region constraint data. . pub fn with_region_constraints( . &self, . op: impl FnOnce(&RegionConstraintData<'tcx>) -> R, . ) -> R { . let mut inner = self.inner.borrow_mut(); 2,488 ( 0.00%) op(inner.unwrap_region_constraints().data()) . } . . pub fn region_var_origin(&self, vid: ty::RegionVid) -> RegionVariableOrigin { . let mut inner = self.inner.borrow_mut(); . let inner = &mut *inner; . inner . .region_constraint_storage . .as_mut() -- line 1335 ---------------------------------------- -- line 1338 ---------------------------------------- . .var_origin(vid) . } . . /// Takes ownership of the list of variable regions. This implies . /// that all the region constraints have already been taken, and . /// hence that `resolve_regions_and_report_errors` can never be . /// called. This is used only during NLL processing to "hand off" ownership . /// of the set of region variables into the NLL region context. 880 ( 0.00%) pub fn take_region_var_origins(&self) -> VarInfos { . let mut inner = self.inner.borrow_mut(); 3,344 ( 0.00%) let (var_infos, data) = inner . .region_constraint_storage . .take() . .expect("regions already resolved") . .with_log(&mut inner.undo_log) 176 ( 0.00%) .into_infos_and_data(); 176 ( 0.00%) assert!(data.is_empty()); . var_infos 1,408 ( 0.00%) } . . pub fn ty_to_string(&self, t: Ty<'tcx>) -> String { . self.resolve_vars_if_possible(t).to_string() . } . . /// If `TyVar(vid)` resolves to a type, return that type. Else, return the . /// universe index of `TyVar(vid)`. 1,560 ( 0.00%) pub fn probe_ty_var(&self, vid: TyVid) -> Result, ty::UniverseIndex> { . use self::type_variable::TypeVariableValue; . 4,680 ( 0.00%) match self.inner.borrow_mut().type_variables().probe(vid) { . TypeVariableValue::Known { value } => Ok(value), . TypeVariableValue::Unknown { universe } => Err(universe), . } 5,460 ( 0.00%) } . . /// Resolve any type variables found in `value` -- but only one . /// level. So, if the variable `?X` is bound to some type . /// `Foo`, then this would return `Foo` (but `?Y` may . /// itself be bound to a type). . /// . /// Useful when you only need to inspect the outermost level of . /// the type and don't care about nested types (or perhaps you . /// will be resolving them as well, e.g. in a loop). . pub fn shallow_resolve(&self, value: T) -> T . where . T: TypeFoldable<'tcx>, . { 277,909 ( 0.02%) value.fold_with(&mut ShallowResolver { infcx: self }) . } . 3,300 ( 0.00%) pub fn root_var(&self, var: ty::TyVid) -> ty::TyVid { . self.inner.borrow_mut().type_variables().root_var(var) 4,950 ( 0.00%) } . . /// Where possible, replaces type/const variables in . /// `value` with their final value. Note that region variables . /// are unaffected. If a type/const variable has not been unified, it . /// is left as is. This is an idempotent operation that does . /// not affect inference state in any way and so you can do it . /// at will. 152 ( 0.00%) pub fn resolve_vars_if_possible(&self, value: T) -> T . where . T: TypeFoldable<'tcx>, . { 114,672 ( 0.01%) if !value.needs_infer() { 114,194 ( 0.01%) return value; // Avoid duplicated subst-folding. . } 48,379 ( 0.00%) let mut r = resolve::OpportunisticVarResolver::new(self); 56,751 ( 0.00%) value.fold_with(&mut r) 190 ( 0.00%) } . . /// Returns the first unresolved variable contained in `T`. In the . /// process of visiting `T`, this will resolve (where possible) . /// type variables in `T`, but it never constructs the final, . /// resolved type, so it's more efficient than . /// `resolve_vars_if_possible()`. . pub fn unresolved_type_vars(&self, value: &T) -> Option<(Ty<'tcx>, Option)> . where -- line 1415 ---------------------------------------- -- line 1490 ---------------------------------------- . expected: &'tcx ty::Const<'tcx>, . actual: &'tcx ty::Const<'tcx>, . err: TypeError<'tcx>, . ) -> DiagnosticBuilder<'tcx> { . let trace = TypeTrace::consts(cause, true, expected, actual); . self.report_and_explain_type_error(trace, &err) . } . 5,085 ( 0.00%) pub fn replace_bound_vars_with_fresh_vars( . &self, . span: Span, . lbrct: LateBoundRegionConversionTime, . value: ty::Binder<'tcx, T>, . ) -> (T, BTreeMap>) . where . T: TypeFoldable<'tcx>, . { . let fld_r = 36,402 ( 0.00%) |br: ty::BoundRegion| self.next_region_var(LateBoundRegion(span, br.kind, lbrct)); . let fld_t = |_| { . self.next_ty_var(TypeVariableOrigin { . kind: TypeVariableOriginKind::MiscVariable, . span, . }) . }; . let fld_c = |_, ty| { . self.next_const_var( . ty, . ConstVariableOrigin { kind: ConstVariableOriginKind::MiscVariable, span }, . ) . }; 27,532 ( 0.00%) self.tcx.replace_bound_vars(value, fld_r, fld_t, fld_c) 3,390 ( 0.00%) } . . /// See the [`region_constraints::RegionConstraintCollector::verify_generic_bound`] method. 72 ( 0.00%) pub fn verify_generic_bound( . &self, . origin: SubregionOrigin<'tcx>, . kind: GenericKind<'tcx>, . a: ty::Region<'tcx>, . bound: VerifyBound<'tcx>, . ) { . debug!("verify_generic_bound({:?}, {:?} <: {:?})", kind, a, bound); . 27 ( 0.00%) self.inner . .borrow_mut() . .unwrap_region_constraints() 153 ( 0.00%) .verify_generic_bound(origin, kind, a, bound); 63 ( 0.00%) } . . /// Obtains the latest type of the given closure; this may be a . /// closure in the current function, in which case its . /// `ClosureKind` may not yet be known. 408 ( 0.00%) pub fn closure_kind(&self, closure_substs: SubstsRef<'tcx>) -> Option { 816 ( 0.00%) let closure_kind_ty = closure_substs.as_closure().kind_ty(); . let closure_kind_ty = self.shallow_resolve(closure_kind_ty); 612 ( 0.00%) closure_kind_ty.to_opt_closure_kind() . } . . /// Clears the selection, evaluation, and projection caches. This is useful when . /// repeatedly attempting to select an `Obligation` while changing only . /// its `ParamEnv`, since `FulfillmentContext` doesn't use probing. . pub fn clear_caches(&self) { . self.selection_cache.clear(); . self.evaluation_cache.clear(); . self.inner.borrow_mut().projection_cache().clear(); . } . . pub fn universe(&self) -> ty::UniverseIndex { 290,582 ( 0.02%) self.universe.get() 109,680 ( 0.01%) } . . /// Creates and return a fresh universe that extends all previous . /// universes. Updates `self.universe` to that new universe. 294 ( 0.00%) pub fn create_next_universe(&self) -> ty::UniverseIndex { 306 ( 0.00%) let u = self.universe.get().next_universe(); . self.universe.set(u); . u 294 ( 0.00%) } . . /// Resolves and evaluates a constant. . /// . /// The constant can be located on a trait like `::C`, in which case the given . /// substitutions and environment are used to resolve the constant. Alternatively if the . /// constant has generic parameters in scope the substitutions are used to evaluate the value of . /// the constant. For example in `fn foo() { let _ = [0; bar::()]; }` the repeat count . /// constant `bar::()` requires a substitution for `T`, if the substitution for `T` is still -- line 1576 ---------------------------------------- -- line 1606 ---------------------------------------- . // variables, thus we don't need to substitute back the original values. . self.tcx.const_eval_resolve(param_env_erased, unevaluated, span) . } . . /// If `typ` is a type variable of some kind, resolve it one level . /// (but do not resolve types found in the result). If `typ` is . /// not a type variable, just return it unmodified. . // FIXME(eddyb) inline into `ShallowResolver::visit_ty`. 1,200,776 ( 0.07%) fn shallow_resolve_ty(&self, typ: Ty<'tcx>) -> Ty<'tcx> { 433,024 ( 0.03%) match *typ.kind() { . ty::Infer(ty::TyVar(v)) => { . // Not entirely obvious: if `typ` is a type variable, . // it can be resolved to an int/float variable, which . // can then be recursively resolved, hence the . // recursion. Note though that we prevent type . // variables from unifying to other type variables . // directly (though they may be embedded . // structurally), and we prevent cycles in any case, . // so this recursion should always be of very limited . // depth. . // . // Note: if these two lines are combined into one we get . // dynamic borrow errors on `self.inner`. 125,296 ( 0.01%) let known = self.inner.borrow_mut().type_variables().probe(v).known(); . known.map_or(typ, |t| self.shallow_resolve_ty(t)) . } . 4,000 ( 0.00%) ty::Infer(ty::IntVar(v)) => self . .inner . .borrow_mut() . .int_unification_table() . .probe_value(v) 1,509 ( 0.00%) .map(|v| v.to_type(self.tcx)) . .unwrap_or(typ), . . ty::Infer(ty::FloatVar(v)) => self . .inner . .borrow_mut() . .float_unification_table() . .probe_value(v) . .map(|v| v.to_type(self.tcx)) . .unwrap_or(typ), . . _ => typ, . } 1,350,873 ( 0.08%) } . . /// `ty_or_const_infer_var_changed` is equivalent to one of these two: . /// * `shallow_resolve(ty) != ty` (where `ty.kind = ty::Infer(_)`) . /// * `shallow_resolve(ct) != ct` (where `ct.kind = ty::ConstKind::Infer(_)`) . /// . /// However, `ty_or_const_infer_var_changed` is more efficient. It's always . /// inlined, despite being large, because it has only two call sites that . /// are extremely hot (both in `traits::fulfill`'s checking of `stalled_on` -- line 1659 ---------------------------------------- -- line 1662 ---------------------------------------- . #[inline(always)] . pub fn ty_or_const_infer_var_changed(&self, infer_var: TyOrConstInferVar<'tcx>) -> bool { . match infer_var { . TyOrConstInferVar::Ty(v) => { . use self::type_variable::TypeVariableValue; . . // If `inlined_probe` returns a `Known` value, it never equals . // `ty::Infer(ty::TyVar(v))`. 64,119 ( 0.00%) match self.inner.borrow_mut().type_variables().inlined_probe(v) { . TypeVariableValue::Unknown { .. } => false, . TypeVariableValue::Known { .. } => true, . } . } . . TyOrConstInferVar::TyInt(v) => { . // If `inlined_probe_value` returns a value it's always a . // `ty::Int(_)` or `ty::UInt(_)`, which never matches a . // `ty::Infer(_)`. 20 ( 0.00%) self.inner.borrow_mut().int_unification_table().inlined_probe_value(v).is_some() . } . . TyOrConstInferVar::TyFloat(v) => { . // If `probe_value` returns a value it's always a . // `ty::Float(_)`, which never matches a `ty::Infer(_)`. . // . // Not `inlined_probe_value(v)` because this call site is colder. . self.inner.borrow_mut().float_unification_table().probe_value(v).is_some() -- line 1688 ---------------------------------------- -- line 1716 ---------------------------------------- . /// Equivalent to `ty::ConstKind::Infer(ty::InferConst::Var(_))`. . Const(ConstVid<'tcx>), . } . . impl<'tcx> TyOrConstInferVar<'tcx> { . /// Tries to extract an inference variable from a type or a constant, returns `None` . /// for types other than `ty::Infer(_)` (or `InferTy::Fresh*`) and . /// for constants other than `ty::ConstKind::Infer(_)` (or `InferConst::Fresh`). 1,508 ( 0.00%) pub fn maybe_from_generic_arg(arg: GenericArg<'tcx>) -> Option { . match arg.unpack() { . GenericArgKind::Type(ty) => Self::maybe_from_ty(ty), . GenericArgKind::Const(ct) => Self::maybe_from_const(ct), . GenericArgKind::Lifetime(_) => None, . } 1,508 ( 0.00%) } . . /// Tries to extract an inference variable from a type, returns `None` . /// for types other than `ty::Infer(_)` (or `InferTy::Fresh*`). 88 ( 0.00%) pub fn maybe_from_ty(ty: Ty<'tcx>) -> Option { 14,362 ( 0.00%) match *ty.kind() { 3,190 ( 0.00%) ty::Infer(ty::TyVar(v)) => Some(TyOrConstInferVar::Ty(v)), 2 ( 0.00%) ty::Infer(ty::IntVar(v)) => Some(TyOrConstInferVar::TyInt(v)), . ty::Infer(ty::FloatVar(v)) => Some(TyOrConstInferVar::TyFloat(v)), . _ => None, . } 88 ( 0.00%) } . . /// Tries to extract an inference variable from a constant, returns `None` . /// for constants other than `ty::ConstKind::Infer(_)` (or `InferConst::Fresh`). . pub fn maybe_from_const(ct: &'tcx ty::Const<'tcx>) -> Option { . match ct.val { . ty::ConstKind::Infer(InferConst::Var(v)) => Some(TyOrConstInferVar::Const(v)), . _ => None, . } -- line 1749 ---------------------------------------- -- line 1755 ---------------------------------------- . } . . impl<'a, 'tcx> TypeFolder<'tcx> for ShallowResolver<'a, 'tcx> { . fn tcx<'b>(&'b self) -> TyCtxt<'tcx> { . self.infcx.tcx . } . . fn fold_ty(&mut self, ty: Ty<'tcx>) -> Ty<'tcx> { 271,290 ( 0.02%) self.infcx.shallow_resolve_ty(ty) . } . 392 ( 0.00%) fn fold_const(&mut self, ct: &'tcx ty::Const<'tcx>) -> &'tcx ty::Const<'tcx> { 356 ( 0.00%) if let ty::Const { val: ty::ConstKind::Infer(InferConst::Var(vid)), .. } = ct { 400 ( 0.00%) self.infcx . .inner . .borrow_mut() . .const_unification_table() 240 ( 0.00%) .probe_value(*vid) . .val . .known() . .unwrap_or(ct) . } else { . ct . } 490 ( 0.00%) } . } . . impl<'tcx> TypeTrace<'tcx> { . pub fn span(&self) -> Span { . self.cause.span . } . . pub fn types( -- line 1787 ---------------------------------------- -- line 1818 ---------------------------------------- . CompareImplTypeObligation { span, .. } => span, . } . } . . pub fn from_obligation_cause(cause: &traits::ObligationCause<'tcx>, default: F) -> Self . where . F: FnOnce() -> Self, . { 6,742 ( 0.00%) match *cause.code() { 1,258 ( 0.00%) traits::ObligationCauseCode::ReferenceOutlivesReferent(ref_type) => { 6,290 ( 0.00%) SubregionOrigin::ReferenceOutlivesReferent(ref_type, cause.span) . } . . traits::ObligationCauseCode::CompareImplMethodObligation { . impl_item_def_id, . trait_item_def_id, . } => SubregionOrigin::CompareImplMethodObligation { . span: cause.span, . impl_item_def_id, -- line 1836 ---------------------------------------- 553,609 ( 0.03%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/map.rs -------------------------------------------------------------------------------- Ir -- line 186 ---------------------------------------- . /// // use the values stored in map . /// ``` . pub struct HashMap { . pub(crate) hash_builder: S, . pub(crate) table: RawTable<(K, V), A>, . } . . impl Clone for HashMap { 264 ( 0.00%) fn clone(&self) -> Self { 392 ( 0.00%) HashMap { . hash_builder: self.hash_builder.clone(), 60 ( 0.00%) table: self.table.clone(), . } 297 ( 0.00%) } . . fn clone_from(&mut self, source: &Self) { . self.table.clone_from(&source.table); . . // Update hash_builder only if we successfully cloned all elements. . self.hash_builder.clone_from(&source.hash_builder); . } . } -- line 207 ---------------------------------------- -- line 210 ---------------------------------------- . /// instances of any functions like RawTable::reserve from being generated . #[cfg_attr(feature = "inline-more", inline)] . pub(crate) fn make_hasher(hash_builder: &S) -> impl Fn(&(Q, V)) -> u64 + '_ . where . K: Borrow, . Q: Hash, . S: BuildHasher, . { 114,847 ( 0.01%) move |val| make_hash::(hash_builder, &val.0) . } . . /// Ensures that a single closure type across uses of this which, in turn prevents multiple . /// instances of any functions like RawTable::reserve from being generated . #[cfg_attr(feature = "inline-more", inline)] . fn equivalent_key(k: &Q) -> impl Fn(&(K, V)) -> bool + '_ . where . K: Borrow, . Q: ?Sized + Eq, . { 443,417 ( 0.03%) move |x| k.eq(x.0.borrow()) . } . . /// Ensures that a single closure type across uses of this which, in turn prevents multiple . /// instances of any functions like RawTable::reserve from being generated . #[cfg_attr(feature = "inline-more", inline)] . fn equivalent(k: &Q) -> impl Fn(&K) -> bool + '_ . where . K: Borrow, . Q: ?Sized + Eq, . { 293,035 ( 0.02%) move |x| k.eq(x.borrow()) . } . . #[cfg(not(feature = "nightly"))] . #[cfg_attr(feature = "inline-more", inline)] . pub(crate) fn make_hash(hash_builder: &S, val: &Q) -> u64 . where . K: Borrow, . Q: Hash + ?Sized, -- line 248 ---------------------------------------- -- line 251 ---------------------------------------- . use core::hash::Hasher; . let mut state = hash_builder.build_hasher(); . val.hash(&mut state); . state.finish() . } . . #[cfg(feature = "nightly")] . #[cfg_attr(feature = "inline-more", inline)] 4 ( 0.00%) pub(crate) fn make_hash(hash_builder: &S, val: &Q) -> u64 . where . K: Borrow, . Q: Hash + ?Sized, . S: BuildHasher, . { . hash_builder.hash_one(val) 8 ( 0.00%) } . . #[cfg(not(feature = "nightly"))] . #[cfg_attr(feature = "inline-more", inline)] . pub(crate) fn make_insert_hash(hash_builder: &S, val: &K) -> u64 . where . K: Hash, . S: BuildHasher, . { -- line 274 ---------------------------------------- -- line 367 ---------------------------------------- . /// let s = DefaultHashBuilder::default(); . /// let mut map = HashMap::with_hasher(s); . /// map.insert(1, 2); . /// ``` . /// . /// [`BuildHasher`]: ../../std/hash/trait.BuildHasher.html . #[cfg_attr(feature = "inline-more", inline)] . pub const fn with_hasher(hash_builder: S) -> Self { 403,840 ( 0.02%) Self { . hash_builder, . table: RawTable::new(), . } . } . . /// Creates an empty `HashMap` with the specified capacity, using `hash_builder` . /// to hash the keys. . /// -- line 383 ---------------------------------------- -- line 437 ---------------------------------------- . /// use hashbrown::hash_map::DefaultHashBuilder; . /// . /// let s = DefaultHashBuilder::default(); . /// let mut map = HashMap::with_hasher(s); . /// map.insert(1, 2); . /// ``` . #[cfg_attr(feature = "inline-more", inline)] . pub fn with_hasher_in(hash_builder: S, alloc: A) -> Self { 277 ( 0.00%) Self { . hash_builder, . table: RawTable::new_in(alloc), . } . } . . /// Creates an empty `HashMap` with the specified capacity, using `hash_builder` . /// to hash the keys. It will be allocated with the given allocator. . /// -- line 453 ---------------------------------------- -- line 663 ---------------------------------------- . /// . /// let mut a = HashMap::new(); . /// assert_eq!(a.len(), 0); . /// a.insert(1, "a"); . /// assert_eq!(a.len(), 1); . /// ``` . #[cfg_attr(feature = "inline-more", inline)] . pub fn len(&self) -> usize { 8,236 ( 0.00%) self.table.len() . } . . /// Returns `true` if the map contains no elements. . /// . /// # Examples . /// . /// ``` . /// use hashbrown::HashMap; -- line 679 ---------------------------------------- -- line 680 ---------------------------------------- . /// . /// let mut a = HashMap::new(); . /// assert!(a.is_empty()); . /// a.insert(1, "a"); . /// assert!(!a.is_empty()); . /// ``` . #[cfg_attr(feature = "inline-more", inline)] . pub fn is_empty(&self) -> bool { 117,072 ( 0.01%) self.len() == 0 . } . . /// Clears the map, returning all key-value pairs as an iterator. Keeps the . /// allocated memory for reuse. . /// . /// # Examples . /// . /// ``` -- line 696 ---------------------------------------- -- line 790 ---------------------------------------- . /// use hashbrown::HashMap; . /// . /// let mut a = HashMap::new(); . /// a.insert(1, "a"); . /// a.clear(); . /// assert!(a.is_empty()); . /// ``` . #[cfg_attr(feature = "inline-more", inline)] 6 ( 0.00%) pub fn clear(&mut self) { . self.table.clear(); 6 ( 0.00%) } . . /// Creates a consuming iterator visiting all the keys in arbitrary order. . /// The map cannot be used after calling this. . /// The iterator element type is `K`. . /// . /// # Examples . /// . /// ``` -- line 808 ---------------------------------------- -- line 963 ---------------------------------------- . /// } . /// . /// assert_eq!(letters[&'s'], 2); . /// assert_eq!(letters[&'t'], 3); . /// assert_eq!(letters[&'u'], 1); . /// assert_eq!(letters.get(&'y'), None); . /// ``` . #[cfg_attr(feature = "inline-more", inline)] 180 ( 0.00%) pub fn entry(&mut self, key: K) -> Entry<'_, K, V, S, A> { . let hash = make_insert_hash::(&self.hash_builder, &key); . if let Some(elem) = self.table.find(hash, equivalent_key(&key)) { 30 ( 0.00%) Entry::Occupied(OccupiedEntry { . hash, . key: Some(key), . elem, . table: self, . }) . } else { 195 ( 0.00%) Entry::Vacant(VacantEntry { . hash, . key, . table: self, . }) . } 225 ( 0.00%) } . . /// Gets the given key's corresponding entry by reference in the map for in-place manipulation. . /// . /// # Examples . /// . /// ``` . /// use hashbrown::HashMap; . /// -- line 995 ---------------------------------------- -- line 1047 ---------------------------------------- . /// ``` . #[inline] . pub fn get(&self, k: &Q) -> Option<&V> . where . K: Borrow, . Q: Hash + Eq, . { . // Avoid `Option::map` because it bloats LLVM IR. 1,108,626 ( 0.06%) match self.get_inner(k) { . Some(&(_, ref v)) => Some(v), . None => None, . } . } . . /// Returns the key-value pair corresponding to the supplied key. . /// . /// The supplied key may be any borrowed form of the map's key type, but -- line 1063 ---------------------------------------- -- line 1091 ---------------------------------------- . } . . #[inline] . fn get_inner(&self, k: &Q) -> Option<&(K, V)> . where . K: Borrow, . Q: Hash + Eq, . { 1,269,621 ( 0.07%) if self.table.is_empty() { . None . } else { 2 ( 0.00%) let hash = make_hash::(&self.hash_builder, k); . self.table.get(hash, equivalent_key(k)) . } . } . . /// Returns the key-value pair corresponding to the supplied key, with a mutable reference to value. . /// . /// The supplied key may be any borrowed form of the map's key type, but . /// [`Hash`] and [`Eq`] on the borrowed form *must* match those for -- line 1110 ---------------------------------------- -- line 1155 ---------------------------------------- . /// use hashbrown::HashMap; . /// . /// let mut map = HashMap::new(); . /// map.insert(1, "a"); . /// assert_eq!(map.contains_key(&1), true); . /// assert_eq!(map.contains_key(&2), false); . /// ``` . #[cfg_attr(feature = "inline-more", inline)] 220,066 ( 0.01%) pub fn contains_key(&self, k: &Q) -> bool . where . K: Borrow, . Q: Hash + Eq, . { . self.get_inner(k).is_some() 340,466 ( 0.02%) } . . /// Returns a mutable reference to the value corresponding to the key. . /// . /// The key may be any borrowed form of the map's key type, but . /// [`Hash`] and [`Eq`] on the borrowed form *must* match those for . /// the key type. . /// . /// [`Eq`]: https://doc.rust-lang.org/std/cmp/trait.Eq.html -- line 1177 ---------------------------------------- -- line 1185 ---------------------------------------- . /// let mut map = HashMap::new(); . /// map.insert(1, "a"); . /// if let Some(x) = map.get_mut(&1) { . /// *x = "b"; . /// } . /// assert_eq!(map[&1], "b"); . /// ``` . #[cfg_attr(feature = "inline-more", inline)] 285 ( 0.00%) pub fn get_mut(&mut self, k: &Q) -> Option<&mut V> . where . K: Borrow, . Q: Hash + Eq, . { . // Avoid `Option::map` because it bloats LLVM IR. 855 ( 0.00%) match self.get_inner_mut(k) { . Some(&mut (_, ref mut v)) => Some(v), . None => None, . } 570 ( 0.00%) } . . #[inline] . fn get_inner_mut(&mut self, k: &Q) -> Option<&mut (K, V)> . where . K: Borrow, . Q: Hash + Eq, . { 285 ( 0.00%) if self.table.is_empty() { . None . } else { . let hash = make_hash::(&self.hash_builder, k); . self.table.get_mut(hash, equivalent_key(k)) . } . } . . /// Attempts to get mutable references to `N` values in the map at once. -- line 1219 ---------------------------------------- -- line 1495 ---------------------------------------- . /// assert_eq!(map.insert(37, "a"), None); . /// assert_eq!(map.is_empty(), false); . /// . /// map.insert(37, "b"); . /// assert_eq!(map.insert(37, "c"), Some("b")); . /// assert_eq!(map[&37], "c"); . /// ``` . #[cfg_attr(feature = "inline-more", inline)] 2,314,646 ( 0.13%) pub fn insert(&mut self, k: K, v: V) -> Option { . let hash = make_insert_hash::(&self.hash_builder, &k); 242 ( 0.00%) if let Some((_, item)) = self.table.get_mut(hash, equivalent_key(&k)) { . Some(mem::replace(item, v)) . } else { 727,106 ( 0.04%) self.table 754,790 ( 0.04%) .insert(hash, (k, v), make_hasher::(&self.hash_builder)); 82,191 ( 0.00%) None . } 2,227,007 ( 0.13%) } . . /// Insert a key-value pair into the map without checking . /// if the key already exists in the map. . /// . /// Returns a reference to the key and value just inserted. . /// . /// This operation is safe if a key does not exist in the map. . /// -- line 1520 ---------------------------------------- -- line 1592 ---------------------------------------- . /// use hashbrown::HashMap; . /// . /// let mut map = HashMap::new(); . /// map.insert(1, "a"); . /// assert_eq!(map.remove(&1), Some("a")); . /// assert_eq!(map.remove(&1), None); . /// ``` . #[cfg_attr(feature = "inline-more", inline)] 121,026 ( 0.01%) pub fn remove(&mut self, k: &Q) -> Option . where . K: Borrow, . Q: Hash + Eq, . { . // Avoid `Option::map` because it bloats LLVM IR. 428,574 ( 0.02%) match self.remove_entry(k) { 10,230 ( 0.00%) Some((_, v)) => Some(v), 96,859 ( 0.01%) None => None, . } 295,788 ( 0.02%) } . . /// Removes a key from the map, returning the stored key and value if the . /// key was previously in the map. . /// . /// The key may be any borrowed form of the map's key type, but . /// [`Hash`] and [`Eq`] on the borrowed form *must* match those for . /// the key type. . /// -- line 1618 ---------------------------------------- -- line 1631 ---------------------------------------- . /// ``` . #[cfg_attr(feature = "inline-more", inline)] . pub fn remove_entry(&mut self, k: &Q) -> Option<(K, V)> . where . K: Borrow, . Q: Hash + Eq, . { . let hash = make_hash::(&self.hash_builder, k); 169,892 ( 0.01%) self.table.remove_entry(hash, equivalent_key(k)) . } . } . . impl HashMap { . /// Creates a raw entry builder for the HashMap. . /// . /// Raw entries provide the lowest level of control for searching and . /// manipulating a map. They must be manually initialized with a hash and -- line 1647 ---------------------------------------- -- line 2209 ---------------------------------------- . /// Creates a `RawEntryMut` from the given key and its hash. . #[inline] . #[allow(clippy::wrong_self_convention)] . pub fn from_key_hashed_nocheck(self, hash: u64, k: &Q) -> RawEntryMut<'a, K, V, S, A> . where . K: Borrow, . Q: Eq, . { 1,227,930 ( 0.07%) self.from_hash(hash, equivalent(k)) . } . } . . impl<'a, K, V, S, A: Allocator + Clone> RawEntryBuilderMut<'a, K, V, S, A> { . /// Creates a `RawEntryMut` from the given hash. . #[cfg_attr(feature = "inline-more", inline)] . #[allow(clippy::wrong_self_convention)] 3,141,311 ( 0.18%) pub fn from_hash(self, hash: u64, is_match: F) -> RawEntryMut<'a, K, V, S, A> . where . for<'b> F: FnMut(&'b K) -> bool, . { . self.search(hash, is_match) 3,318,307 ( 0.19%) } . . #[cfg_attr(feature = "inline-more", inline)] . fn search(self, hash: u64, mut is_match: F) -> RawEntryMut<'a, K, V, S, A> . where . for<'b> F: FnMut(&'b K) -> bool, . { 405,250 ( 0.02%) match self.map.table.find(hash, |(k, _)| is_match(k)) { 2,040,268 ( 0.12%) Some(elem) => RawEntryMut::Occupied(RawOccupiedEntryMut { . elem, . table: &mut self.map.table, . hash_builder: &self.map.hash_builder, . }), 142,363 ( 0.01%) None => RawEntryMut::Vacant(RawVacantEntryMut { . table: &mut self.map.table, . hash_builder: &self.map.hash_builder, . }), . } . } . } . . impl<'a, K, V, S, A: Allocator + Clone> RawEntryBuilder<'a, K, V, S, A> { -- line 2251 ---------------------------------------- -- line 2260 ---------------------------------------- . { . let hash = make_hash::(&self.map.hash_builder, k); . self.from_key_hashed_nocheck(hash, k) . } . . /// Access an entry by a key and its hash. . #[cfg_attr(feature = "inline-more", inline)] . #[allow(clippy::wrong_self_convention)] 1,148,156 ( 0.07%) pub fn from_key_hashed_nocheck(self, hash: u64, k: &Q) -> Option<(&'a K, &'a V)> . where . K: Borrow, . Q: Eq, . { 1,152,112 ( 0.07%) self.from_hash(hash, equivalent(k)) 2,061,149 ( 0.12%) } . . #[cfg_attr(feature = "inline-more", inline)] . fn search(self, hash: u64, mut is_match: F) -> Option<(&'a K, &'a V)> . where . F: FnMut(&K) -> bool, . { 2,194,240 ( 0.13%) match self.map.table.get(hash, |(k, _)| is_match(k)) { . Some(&(ref key, ref value)) => Some((key, value)), . None => None, . } . } . . /// Access an entry by hash. . #[cfg_attr(feature = "inline-more", inline)] . #[allow(clippy::wrong_self_convention)] -- line 2289 ---------------------------------------- -- line 2624 ---------------------------------------- . /// and returns a mutable reference to it. . #[cfg_attr(feature = "inline-more", inline)] . #[allow(clippy::shadow_unrelated)] . pub fn insert_hashed_nocheck(self, hash: u64, key: K, value: V) -> (&'a mut K, &'a mut V) . where . K: Hash, . S: BuildHasher, . { 232,779 ( 0.01%) let &mut (ref mut k, ref mut v) = self.table.insert_entry( . hash, . (key, value), . make_hasher::(self.hash_builder), . ); . (k, v) . } . . /// Set the value of an entry with a custom hasher function. -- line 2640 ---------------------------------------- -- line 2974 ---------------------------------------- . /// map.insert("a", 1); . /// map.insert("b", 2); . /// map.insert("c", 3); . /// . /// // Not possible with .iter() . /// let vec: Vec<(&str, i32)> = map.into_iter().collect(); . /// ``` . #[cfg_attr(feature = "inline-more", inline)] 713 ( 0.00%) fn into_iter(self) -> IntoIter { 14,013 ( 0.00%) IntoIter { 8,082 ( 0.00%) inner: self.table.into_iter(), . } 2,139 ( 0.00%) } . } . . impl<'a, K, V> Iterator for Iter<'a, K, V> { . type Item = (&'a K, &'a V); . . #[cfg_attr(feature = "inline-more", inline)] . fn next(&mut self) -> Option<(&'a K, &'a V)> { . // Avoid `Option::map` because it bloats LLVM IR. 138,154 ( 0.01%) match self.inner.next() { . Some(x) => unsafe { . let r = x.as_ref(); 479 ( 0.00%) Some((&r.0, &r.1)) . }, . None => None, . } . } . #[cfg_attr(feature = "inline-more", inline)] . fn size_hint(&self) -> (usize, Option) { 12 ( 0.00%) self.inner.size_hint() . } . } . impl ExactSizeIterator for Iter<'_, K, V> { . #[cfg_attr(feature = "inline-more", inline)] . fn len(&self) -> usize { . self.inner.len() . } . } -- line 3013 ---------------------------------------- -- line 3051 ---------------------------------------- . } . } . . impl Iterator for IntoIter { . type Item = (K, V); . . #[cfg_attr(feature = "inline-more", inline)] . fn next(&mut self) -> Option<(K, V)> { 878 ( 0.00%) self.inner.next() . } . #[cfg_attr(feature = "inline-more", inline)] . fn size_hint(&self) -> (usize, Option) { . self.inner.size_hint() . } . } . impl ExactSizeIterator for IntoIter { . #[cfg_attr(feature = "inline-more", inline)] -- line 3067 ---------------------------------------- -- line 3076 ---------------------------------------- . f.debug_list().entries(self.iter()).finish() . } . } . . impl<'a, K, V> Iterator for Keys<'a, K, V> { . type Item = &'a K; . . #[cfg_attr(feature = "inline-more", inline)] 41 ( 0.00%) fn next(&mut self) -> Option<&'a K> { . // Avoid `Option::map` because it bloats LLVM IR. . match self.inner.next() { . Some((k, _)) => Some(k), . None => None, . } 82 ( 0.00%) } . #[cfg_attr(feature = "inline-more", inline)] . fn size_hint(&self) -> (usize, Option) { . self.inner.size_hint() . } . } . impl ExactSizeIterator for Keys<'_, K, V> { . #[cfg_attr(feature = "inline-more", inline)] . fn len(&self) -> usize { -- line 3098 ---------------------------------------- -- line 4557 ---------------------------------------- . /// keys with new values returned from the iterator. . impl Extend<(K, V)> for HashMap . where . K: Eq + Hash, . S: BuildHasher, . A: Allocator + Clone, . { . #[cfg_attr(feature = "inline-more", inline)] 13,914 ( 0.00%) fn extend>(&mut self, iter: T) { . // Keys may be already present or show multiple times in the iterator. . // Reserve the entire hint lower bound if the map is empty. . // Otherwise reserve half the hint (rounded up), so the map . // will only resize twice in the worst case. 11,858 ( 0.00%) let iter = iter.into_iter(); 23,856 ( 0.00%) let reserve = if self.is_empty() { . iter.size_hint().0 . } else { 379 ( 0.00%) (iter.size_hint().0 + 1) / 2 . }; . self.reserve(reserve); . iter.for_each(move |(k, v)| { 77,408 ( 0.00%) self.insert(k, v); . }); 8,721 ( 0.00%) } . . #[inline] . #[cfg(feature = "nightly")] . fn extend_one(&mut self, (k, v): (K, V)) { . self.insert(k, v); . } . . #[inline] -- line 4588 ---------------------------------------- 1,622,526 ( 0.09%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_const_eval/src/interpret/validity.rs -------------------------------------------------------------------------------- Ir -- line 132 ---------------------------------------- . /// State for tracking recursive validation of references . pub struct RefTracking { . pub seen: FxHashSet, . pub todo: Vec<(T, PATH)>, . } . . impl RefTracking { . pub fn empty() -> Self { 56 ( 0.00%) RefTracking { seen: FxHashSet::default(), todo: vec![] } . } 70 ( 0.00%) pub fn new(op: T) -> Self { . let mut ref_tracking_for_consts = 224 ( 0.00%) RefTracking { seen: FxHashSet::default(), todo: vec![(op, PATH::default())] }; . ref_tracking_for_consts.seen.insert(op); . ref_tracking_for_consts 70 ( 0.00%) } . . pub fn track(&mut self, op: T, path: impl FnOnce() -> PATH) { 64 ( 0.00%) if self.seen.insert(op) { . trace!("Recursing below ptr {:#?}", op); . let path = path(); . // Remember to come back to this later. 132 ( 0.00%) self.todo.push((op, path)); . } . } . } . . /// Format a path . fn write_path(out: &mut String, path: &[PathElem]) { . use self::PathElem::*; . -- line 162 ---------------------------------------- -- line 208 ---------------------------------------- . path: Vec, . ref_tracking: Option<&'rt mut RefTracking, Vec>>, . /// `None` indicates this is not validating for CTFE (but for runtime). . ctfe_mode: Option, . ecx: &'rt InterpCx<'mir, 'tcx, M>, . } . . impl<'rt, 'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> ValidityVisitor<'rt, 'mir, 'tcx, M> { 639,720 ( 0.04%) fn aggregate_field_path_elem(&mut self, layout: TyAndLayout<'tcx>, field: usize) -> PathElem { . // First, check if we are projecting to a variant. 159,930 ( 0.01%) match layout.variants { . Variants::Multiple { tag_field, .. } => { 19,340 ( 0.00%) if tag_field == field { 29,010 ( 0.00%) return match layout.ty.kind() { 19,340 ( 0.00%) ty::Adt(def, ..) if def.is_enum() => PathElem::EnumTag, . ty::Generator(..) => PathElem::GeneratorTag, . _ => bug!("non-variant type {:?}", layout.ty), . }; . } . } . Variants::Single { .. } => {} . } . . // Now we know we are projecting to a field, so figure out which one. 174,560 ( 0.01%) match layout.ty.kind() { . // generators and closures. . ty::Closure(def_id, _) | ty::Generator(def_id, _, _) => { . let mut name = None; . // FIXME this should be more descriptive i.e. CapturePlace instead of CapturedVar . // https://github.com/rust-lang/project-rfc-2229/issues/46 . if let Some(local_def_id) = def_id.as_local() { . let tables = self.ecx.tcx.typeck(local_def_id); . if let Some(captured_place) = -- line 240 ---------------------------------------- -- line 257 ---------------------------------------- . sym::integer(field) . })) . } . . // tuples . ty::Tuple(_) => PathElem::TupleElem(field), . . // enums 2 ( 0.00%) ty::Adt(def, ..) if def.is_enum() => { . // we might be projecting *to* a variant, or to a field *in* a variant. . match layout.variants { . Variants::Single { index } => { . // Inside a variant . PathElem::Field(def.variants[index].fields[field].name) . } . Variants::Multiple { .. } => bug!("we handled variants above"), . } . } . . // other ADTs 1 ( 0.00%) ty::Adt(def, _) => PathElem::Field(def.non_enum_variant().fields[field].name), . . // arrays/slices . ty::Array(..) | ty::Slice(..) => PathElem::ArrayElem(field), . . // dyn traits . ty::Dynamic(..) => PathElem::DynDowncast, . . // nothing else has an aggregate layout . _ => bug!("aggregate_field_path_elem: got non-aggregate type {:?}", layout.ty), . } 693,030 ( 0.04%) } . . fn with_elem( . &mut self, . elem: PathElem, . f: impl FnOnce(&mut Self) -> InterpResult<'tcx, R>, . ) -> InterpResult<'tcx, R> { . // Remember the old state 145,300 ( 0.01%) let path_len = self.path.len(); . // Record new element . self.path.push(elem); . // Perform operation 145,300 ( 0.01%) let r = f(self)?; . // Undo changes . self.path.truncate(path_len); . // Done . Ok(r) . } . 54 ( 0.00%) fn check_wide_ptr_meta( . &mut self, . meta: MemPlaceMeta, . pointee: TyAndLayout<'tcx>, . ) -> InterpResult<'tcx> { 42 ( 0.00%) let tail = self.ecx.tcx.struct_tail_erasing_lifetimes(pointee.ty, self.ecx.param_env); 24 ( 0.00%) match tail.kind() { . ty::Dynamic(..) => { . let vtable = self.ecx.scalar_to_ptr(meta.unwrap_meta()); . // Direct call to `check_ptr_access_align` checks alignment even on CTFE machines. . try_validation!( . self.ecx.memory.check_ptr_access_align( . vtable, . 3 * self.ecx.tcx.data_layout.pointer_size, // drop, size, align . self.ecx.tcx.data_layout.pointer_align.abi, -- line 321 ---------------------------------------- -- line 347 ---------------------------------------- . err_ub!(InvalidVtableAlignment(msg)) => . { "invalid vtable: alignment {}", msg }, . err_unsup!(ReadPointerAsBytes) => { "invalid size or align in vtable" }, . ); . // FIXME: More checks for the vtable. . } . ty::Slice(..) | ty::Str => { . let _len = try_validation!( 6 ( 0.00%) meta.unwrap_meta().to_machine_usize(self.ecx), . self.path, . err_unsup!(ReadPointerAsBytes) => { "non-integer slice length in wide pointer" }, . ); . // We do not check that `len * elem_size <= isize::MAX`: . // that is only required for references, and there it falls out of the . // "dereferenceable" check performed by Stacked Borrows. . } . ty::Foreign(..) => { . // Unsized, but not wide. . } . _ => bug!("Unexpected unsized type tail: {:?}", tail), . } . . Ok(()) 54 ( 0.00%) } . . /// Check a reference or `Box`. 132 ( 0.00%) fn check_safe_pointer( . &mut self, . value: &OpTy<'tcx, M::PointerTag>, . kind: &str, . ) -> InterpResult<'tcx> { 36 ( 0.00%) let value = try_validation!( 24 ( 0.00%) self.ecx.read_immediate(value), . self.path, . err_unsup!(ReadPointerAsBytes) => { "part of a pointer" } expected { "a proper pointer or integer value" }, . ); . // Handle wide pointers. . // Check metadata early, for better diagnostics 120 ( 0.00%) let place = try_validation!( 36 ( 0.00%) self.ecx.ref_to_mplace(&value), . self.path, . err_ub!(InvalidUninitBytes(None)) => { "uninitialized {}", kind }, . ); 36 ( 0.00%) if place.layout.is_unsized() { 66 ( 0.00%) self.check_wide_ptr_meta(place.meta, place.layout)?; . } . // Make sure this is dereferenceable and all. 24 ( 0.00%) let size_and_align = try_validation!( 12 ( 0.00%) self.ecx.size_and_align_of_mplace(&place), . self.path, . err_ub!(InvalidMeta(msg)) => { "invalid {} metadata: {}", kind, msg }, . ); . let (size, align) = size_and_align . // for the purpose of validity, consider foreign types to have . // alignment and size determined by the layout (size will be 0, . // alignment should take attributes into account). . .unwrap_or_else(|| (place.layout.size, place.layout.align.abi)); . // Direct call to `check_ptr_access_align` checks alignment even on CTFE machines. . try_validation!( 24 ( 0.00%) self.ecx.memory.check_ptr_access_align( 36 ( 0.00%) place.ptr, . size, . align, . CheckInAllocMsg::InboundsTest, // will anyway be replaced by validity message . ), . self.path, . err_ub!(AlignmentCheckFailed { required, has }) => . { . "an unaligned {} (required {} byte alignment but found {})", -- line 415 ---------------------------------------- -- line 424 ---------------------------------------- . err_ub!(PointerOutOfBounds { .. }) => . { "a dangling {} (going beyond the bounds of its allocation)", kind }, . // This cannot happen during const-eval (because interning already detects . // dangling pointers), but it can happen in Miri. . err_ub!(PointerUseAfterFree(..)) => . { "a dangling {} (use-after-free)", kind }, . ); . // Recursive checking 36 ( 0.00%) if let Some(ref mut ref_tracking) = self.ref_tracking { . // Proceed recursively even for ZST, no reason to skip them! . // `!` is a ZST and we want to validate it. . // Skip validation entirely for some external statics 24 ( 0.00%) if let Ok((alloc_id, _offset, _ptr)) = self.ecx.memory.ptr_try_get_alloc(place.ptr) { . // not a ZST 36 ( 0.00%) let alloc_kind = self.ecx.tcx.get_global_alloc(alloc_id); 24 ( 0.00%) if let Some(GlobalAlloc::Static(did)) = alloc_kind { . assert!(!self.ecx.tcx.is_thread_local_static(did)); . assert!(self.ecx.tcx.is_static(did)); . if matches!( . self.ctfe_mode, . Some(CtfeValidationMode::Const { allow_static_ptrs: false, .. }) . ) { . // See const_eval::machine::MemoryExtra::can_access_statics for why . // this check is so important. -- line 447 ---------------------------------------- -- line 460 ---------------------------------------- . // and that static refers back to us. . // We might miss const-invalid data, . // but things are still sound otherwise (in particular re: consts . // referring to statics). . return Ok(()); . } . } . let path = &self.path; 108 ( 0.00%) ref_tracking.track(place, || { . // We need to clone the path anyway, make sure it gets created . // with enough space for the additional `Deref`. 48 ( 0.00%) let mut new_path = Vec::with_capacity(path.len() + 1); . new_path.clone_from(path); . new_path.push(PathElem::Deref); . new_path . }); . } . Ok(()) 108 ( 0.00%) } . 293,909 ( 0.02%) fn read_scalar( . &self, . op: &OpTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, ScalarMaybeUninit> { 335,896 ( 0.02%) Ok(try_validation!( 125,961 ( 0.01%) self.ecx.read_scalar(op), . self.path, . err_unsup!(ReadPointerAsBytes) => { "(potentially part of) a pointer" } expected { "plain (non-pointer) bytes" }, . )) 251,922 ( 0.01%) } . . /// Check if this is a value of primitive type, and if yes check the validity of the value . /// at that type. Return `true` if the type is indeed primitive. 567,054 ( 0.03%) fn try_visit_primitive( . &mut self, . value: &OpTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, bool> { . // Go over all the primitive types 189,018 ( 0.01%) let ty = value.layout.ty; 378,036 ( 0.02%) match ty.kind() { . ty::Bool => { . let value = self.read_scalar(value)?; . try_validation!( . value.to_bool(), . self.path, . err_ub!(InvalidBool(..)) | err_ub!(InvalidUninitBytes(None)) => . { "{}", value } expected { "a boolean" }, . ); . Ok(true) . } . ty::Char => { 90,576 ( 0.01%) let value = self.read_scalar(value)?; 45,288 ( 0.00%) try_validation!( . value.to_char(), . self.path, . err_ub!(InvalidChar(..)) | err_ub!(InvalidUninitBytes(None)) => . { "{}", value } expected { "a valid unicode scalar value (in `0..=0x10FFFF` but not in `0xD800..=0xDFFF`)" }, . ); . Ok(true) . } . ty::Float(_) | ty::Int(_) | ty::Uint(_) => { 38,692 ( 0.00%) let value = self.read_scalar(value)?; . // NOTE: Keep this in sync with the array optimization for int/float . // types below! . if M::enforce_number_validity(self.ecx) { . // Integers/floats in CTFE: Must be scalar bits, pointers are dangerous . let is_bits = value.check_init().map_or(false, |v| v.try_to_int().is_ok()); . if !is_bits { . throw_validation_failure!(self.path, . { "{}", value } expected { "initialized plain (non-pointer) bytes" } -- line 529 ---------------------------------------- -- line 543 ---------------------------------------- . err_unsup!(ReadPointerAsBytes) => { "part of a pointer" } expected { "a proper pointer or integer value" }, . ); . if place.layout.is_unsized() { . self.check_wide_ptr_meta(place.meta, place.layout)?; . } . Ok(true) . } . ty::Ref(_, ty, mutbl) => { 36 ( 0.00%) if matches!(self.ctfe_mode, Some(CtfeValidationMode::Const { .. })) . && *mutbl == hir::Mutability::Mut . { . // A mutable reference inside a const? That does not seem right (except if it is . // a ZST). . let layout = self.ecx.layout_of(ty)?; . if !layout.is_zst() { . throw_validation_failure!(self.path, { "mutable reference in a `const`" }); . } . } 36 ( 0.00%) self.check_safe_pointer(value, "reference")?; . Ok(true) . } 38,682 ( 0.00%) ty::Adt(def, ..) if def.is_box() => { . self.check_safe_pointer(value, "box")?; . Ok(true) . } . ty::FnPtr(_sig) => { . let value = try_validation!( . self.ecx.read_immediate(value), . self.path, . err_unsup!(ReadPointerAsBytes) => { "part of a pointer" } expected { "a proper pointer or integer value" }, -- line 572 ---------------------------------------- -- line 606 ---------------------------------------- . | ty::Infer(..) . | ty::Placeholder(..) . | ty::Bound(..) . | ty::Param(..) . | ty::Opaque(..) . | ty::Projection(..) . | ty::GeneratorWitness(..) => bug!("Encountered invalid type {:?}", ty), . } 945,090 ( 0.05%) } . 77,360 ( 0.00%) fn visit_scalar( . &mut self, . op: &OpTy<'tcx, M::PointerTag>, . scalar_layout: ScalarAbi, . ) -> InterpResult<'tcx> { 29,010 ( 0.00%) if scalar_layout.valid_range.is_full_for(op.layout.size) { . // Nothing to check . return Ok(()); . } . // At least one value is excluded. . let valid_range = scalar_layout.valid_range; . let WrappingRange { start, end } = valid_range; . let max_value = op.layout.size.unsigned_int_max(); 38,680 ( 0.00%) assert!(end <= max_value); . // Determine the allowed range 29,010 ( 0.00%) let value = self.read_scalar(op)?; . let value = try_validation!( . value.check_init(), . self.path, . err_ub!(InvalidUninitBytes(None)) => { "{}", value } . expected { "something {}", wrapping_range_format(valid_range, max_value) }, . ); 19,340 ( 0.00%) let bits = match value.try_to_int() { . Err(_) => { . // So this is a pointer then, and casting to an int failed. . // Can only happen during CTFE. . let ptr = self.ecx.scalar_to_ptr(value); . if start == 1 && end == max_value { . // Only null is the niche. So make sure the ptr is NOT null. . if self.ecx.memory.ptr_may_be_null(ptr) { . throw_validation_failure!(self.path, -- line 646 ---------------------------------------- -- line 659 ---------------------------------------- . { "a pointer" } . expected { . "something that cannot possibly fail to be {}", . wrapping_range_format(valid_range, max_value) . } . ) . } . } 154,720 ( 0.01%) Ok(int) => int.assert_bits(op.layout.size), . }; . // Now compare. This is slightly subtle because this is a special "wrap-around" range. 48,350 ( 0.00%) if valid_range.contains(bits) { . Ok(()) . } else { . throw_validation_failure!(self.path, . { "{}", bits } . expected { "something {}", wrapping_range_format(valid_range, max_value) } . ) . } 87,030 ( 0.01%) } . } . . impl<'rt, 'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> ValueVisitor<'mir, 'tcx, M> . for ValidityVisitor<'rt, 'mir, 'tcx, M> . { . type V = OpTy<'tcx, M::PointerTag>; . . #[inline(always)] -- line 686 ---------------------------------------- -- line 688 ---------------------------------------- . &self.ecx . } . . fn read_discriminant( . &mut self, . op: &OpTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, VariantIdx> { . self.with_elem(PathElem::EnumTag, move |this| { 29,010 ( 0.00%) Ok(try_validation!( 38,680 ( 0.00%) this.ecx.read_discriminant(op), . this.path, . err_ub!(InvalidTag(val)) => . { "{}", val } expected { "a valid enum tag" }, . err_ub!(InvalidUninitBytes(None)) => . { "uninitialized bytes" } expected { "a valid enum tag" }, . err_unsup!(ReadPointerAsBytes) => . { "a pointer" } expected { "a valid enum tag" }, . ) -- line 705 ---------------------------------------- -- line 709 ---------------------------------------- . . #[inline] . fn visit_field( . &mut self, . old_op: &OpTy<'tcx, M::PointerTag>, . field: usize, . new_op: &OpTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx> { 247,218 ( 0.01%) let elem = self.aggregate_field_path_elem(old_op.layout, field); 159,930 ( 0.01%) self.with_elem(elem, move |this| this.visit_value(new_op)) . } . . #[inline] . fn visit_variant( . &mut self, . old_op: &OpTy<'tcx, M::PointerTag>, . variant_id: VariantIdx, . new_op: &OpTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx> { 38,680 ( 0.00%) let name = match old_op.layout.ty.kind() { 38,680 ( 0.00%) ty::Adt(adt, _) => PathElem::Variant(adt.variants[variant_id].name), . // Generators also have variants . ty::Generator(..) => PathElem::GeneratorState(variant_id), . _ => bug!("Unexpected type with variant: {:?}", old_op.layout.ty), . }; 67,690 ( 0.00%) self.with_elem(name, move |this| this.visit_value(new_op)) . } . . #[inline(always)] . fn visit_union( . &mut self, . op: &OpTy<'tcx, M::PointerTag>, . _fields: NonZeroUsize, . ) -> InterpResult<'tcx> { -- line 742 ---------------------------------------- -- line 745 ---------------------------------------- . if !op.layout.ty.is_freeze(self.ecx.tcx.at(DUMMY_SP), self.ecx.param_env) { . throw_validation_failure!(self.path, { "`UnsafeCell` in a `const`" }); . } . } . Ok(()) . } . . #[inline] 566,820 ( 0.03%) fn visit_value(&mut self, op: &OpTy<'tcx, M::PointerTag>) -> InterpResult<'tcx> { . trace!("visit_value: {:?}, {:?}", *op, op.layout); . . // Check primitive types -- the leafs of our recursive descend. 251,998 ( 0.01%) if self.try_visit_primitive(op)? { . return Ok(()); . } . // Sanity check: `builtin_deref` does not know any pointers that are not primitive. 122,708 ( 0.01%) assert!(op.layout.ty.builtin_deref(true).is_none()); . . // Special check preventing `UnsafeCell` in the inner part of constants 100,036 ( 0.01%) if let Some(def) = op.layout.ty.ty_adt_def() { 96,696 ( 0.01%) if matches!(self.ctfe_mode, Some(CtfeValidationMode::Const { inner: true, .. })) 135,324 ( 0.01%) && Some(def.did) == self.ecx.tcx.lang_items().unsafe_cell_type() . { . throw_validation_failure!(self.path, { "`UnsafeCell` in a `const`" }); . } . } . . // Recursively walk the value at its type. 153,385 ( 0.01%) self.walk_value(op)?; . . // *After* all of this, check the ABI. We need to check the ABI to handle . // types like `NonNull` where the `Scalar` info is more restrictive than what . // the fields say (`rustc_layout_scalar_valid_range_start`). . // But in most cases, this will just propagate what the fields say, . // and then we want the error to point at the field -- so, first recurse, . // then check ABI. . // . // FIXME: We could avoid some redundant checks here. For newtypes wrapping . // scalars, we do the same check on every "level" (e.g., first we check . // MyNewtype and then the scalar in there). 172,725 ( 0.01%) match op.layout.abi { . Abi::Uninhabited => { . throw_validation_failure!(self.path, . { "a value of uninhabited type {:?}", op.layout.ty } . ); . } . Abi::Scalar(scalar_layout) => { 106,370 ( 0.01%) self.visit_scalar(op, scalar_layout)?; . } . Abi::ScalarPair { .. } | Abi::Vector { .. } => { . // These have fields that we already visited above, so we already checked . // all their scalar-level restrictions. . // There is also no equivalent to `rustc_layout_scalar_valid_range_start` . // that would make skipping them here an issue. . } . Abi::Aggregate { .. } => { . // Nothing to do. . } . } . . Ok(()) 503,840 ( 0.03%) } . . fn visit_aggregate( . &mut self, . op: &OpTy<'tcx, M::PointerTag>, . fields: impl Iterator>, . ) -> InterpResult<'tcx> { 276,093 ( 0.02%) match op.layout.ty.kind() { . ty::Str => { . let mplace = op.assert_mem_place(); // strings are never immediate . let len = mplace.len(self.ecx)?; . try_validation!( . self.ecx.memory.read_bytes(mplace.ptr, Size::from_bytes(len)), . self.path, . err_ub!(InvalidUninitBytes(..)) => { "uninitialized data in `str`" }, . err_unsup!(ReadPointerAsBytes) => { "a pointer in `str`" }, -- line 821 ---------------------------------------- -- line 822 ---------------------------------------- . ); . } . ty::Array(tys, ..) | ty::Slice(tys) . // This optimization applies for types that can hold arbitrary bytes (such as . // integer and floating point types) or for structs or tuples with no fields. . // FIXME(wesleywiser) This logic could be extended further to arbitrary structs . // or tuples made up of integer/floating point types or inhabited ZSTs with no . // padding. 65 ( 0.00%) if matches!(tys.kind(), ty::Int(..) | ty::Uint(..) | ty::Float(..)) . => . { . // Optimized handling for arrays of integer/float type. . . // Arrays cannot be immediate, slices are never immediate. . let mplace = op.assert_mem_place(); . // This is the length of the array/slice. . let len = mplace.len(self.ecx)?; -- line 838 ---------------------------------------- -- line 891 ---------------------------------------- . _ => return Err(err), . } . } . } . } . // Fast path for arrays and slices of ZSTs. We only need to check a single ZST element . // of an array and not all of them, because there's only a single value of a specific . // ZST type, so either validation fails for all elements or none. 117 ( 0.00%) ty::Array(tys, ..) | ty::Slice(tys) if self.ecx.layout_of(tys)?.is_zst() => { . // Validate just the first element (if any). . self.walk_aggregate(op, fields.take(1))? . } . _ => { . self.walk_aggregate(op, fields)? // default handler . } . } . Ok(()) . } . } . . impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { 156 ( 0.00%) fn validate_operand_internal( . &self, . op: &OpTy<'tcx, M::PointerTag>, . path: Vec, . ref_tracking: Option<&mut RefTracking, Vec>>, . ctfe_mode: Option, . ) -> InterpResult<'tcx> { . trace!("validate_operand_internal: {:?}, {:?}", *op, op.layout.ty); . . // Construct a visitor 234 ( 0.00%) let mut visitor = ValidityVisitor { path, ref_tracking, ctfe_mode, ecx: self }; . . // Run it. 78 ( 0.00%) match visitor.visit_value(&op) { . Ok(()) => Ok(()), . // Pass through validation failures. . Err(err) if matches!(err.kind(), err_ub!(ValidationFailure { .. })) => Err(err), . // Also pass through InvalidProgram, those just indicate that we could not . // validate and each caller will know best what to do with them. . Err(err) if matches!(err.kind(), InterpError::InvalidProgram(_)) => Err(err), . // Avoid other errors as those do not show *where* in the value the issue lies. . Err(err) => { . err.print_backtrace(); . bug!("Unexpected error during validation: {}", err); . } . } 182 ( 0.00%) } . . /// This function checks the data at `op` to be const-valid. . /// `op` is assumed to cover valid memory if it is an indirect operand. . /// It will error if the bits at the destination do not match the ones described by the layout. . /// . /// `ref_tracking` is used to record references that we encounter so that they . /// can be checked recursively by an outside driving loop. . /// -- line 946 ---------------------------------------- -- line 950 ---------------------------------------- . #[inline(always)] . pub fn const_validate_operand( . &self, . op: &OpTy<'tcx, M::PointerTag>, . path: Vec, . ref_tracking: &mut RefTracking, Vec>, . ctfe_mode: CtfeValidationMode, . ) -> InterpResult<'tcx> { 260 ( 0.00%) self.validate_operand_internal(op, path, Some(ref_tracking), Some(ctfe_mode)) . } . . /// This function checks the data at `op` to be runtime-valid. . /// `op` is assumed to cover valid memory if it is an indirect operand. . /// It will error if the bits at the destination do not match the ones described by the layout. . #[inline(always)] . pub fn validate_operand(&self, op: &OpTy<'tcx, M::PointerTag>) -> InterpResult<'tcx> { . self.validate_operand_internal(op, vec![], None, None) -- line 966 ---------------------------------------- 920,677 ( 0.05%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_metadata/src/rmeta/encoder.rs -------------------------------------------------------------------------------- Ir -- line 83 ---------------------------------------- . if $self.is_proc_macro { . return Lazy::empty(); . } . }; . } . . macro_rules! encoder_methods { . ($($name:ident($ty:ty);)*) => { 12,520 ( 0.00%) $(fn $name(&mut self, value: $ty) -> Result<(), Self::Error> { . self.opaque.$name(value) 15,024 ( 0.00%) })* . } . } . . impl<'a, 'tcx> Encoder for EncodeContext<'a, 'tcx> { . type Error = ::Error; . . #[inline] . fn emit_unit(&mut self) -> Result<(), Self::Error> { -- line 101 ---------------------------------------- -- line 125 ---------------------------------------- . emit_raw_bytes(&[u8]); . } . } . . impl<'a, 'tcx, T: Encodable>> Encodable> . for Lazy . { . fn encode(&self, e: &mut EncodeContext<'a, 'tcx>) -> opaque::EncodeResult { 3,082 ( 0.00%) e.emit_lazy_distance(*self) . } . } . . impl<'a, 'tcx, T: Encodable>> Encodable> . for Lazy<[T]> . { 65 ( 0.00%) fn encode(&self, e: &mut EncodeContext<'a, 'tcx>) -> opaque::EncodeResult { . e.emit_usize(self.meta)?; 378 ( 0.00%) if self.meta == 0 { . return Ok(()); . } 963 ( 0.00%) e.emit_lazy_distance(*self) 24 ( 0.00%) } . } . . impl<'a, 'tcx, I: Idx, T: Encodable>> Encodable> . for Lazy> . where . Option: FixedSizeEncoding, . { . fn encode(&self, e: &mut EncodeContext<'a, 'tcx>) -> opaque::EncodeResult { . e.emit_usize(self.meta)?; 144 ( 0.00%) e.emit_lazy_distance(*self) . } . } . . impl<'a, 'tcx> Encodable> for CrateNum { 6,818 ( 0.00%) fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> opaque::EncodeResult { 9,467 ( 0.00%) if *self != LOCAL_CRATE && s.is_proc_macro { . panic!("Attempted to encode non-local CrateNum {:?} for proc-macro crate", self); . } . s.emit_u32(self.as_u32()) 5,844 ( 0.00%) } . } . . impl<'a, 'tcx> Encodable> for DefIndex { 5,145 ( 0.00%) fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> opaque::EncodeResult { . s.emit_u32(self.as_u32()) 6,174 ( 0.00%) } . } . . impl<'a, 'tcx> Encodable> for ExpnIndex { . fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> opaque::EncodeResult { . s.emit_u32(self.as_u32()) . } . } . . impl<'a, 'tcx> Encodable> for SyntaxContext { 287,075 ( 0.02%) fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> opaque::EncodeResult { 172,245 ( 0.01%) rustc_span::hygiene::raw_encode_syntax_context(*self, &s.hygiene_ctxt, s) 344,490 ( 0.02%) } . } . . impl<'a, 'tcx> Encodable> for ExpnId { . fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> opaque::EncodeResult { 802 ( 0.00%) if self.krate == LOCAL_CRATE { . // We will only write details for local expansions. Non-local expansions will fetch . // data from the corresponding crate's metadata. . // FIXME(#43047) FIXME(#74731) We may eventually want to avoid relying on external . // metadata from proc-macro crates. 2,807 ( 0.00%) s.hygiene_ctxt.schedule_expn_data_for_encoding(*self); . } 1,921 ( 0.00%) self.krate.encode(s)?; . self.local_id.encode(s) . } . } . . impl<'a, 'tcx> Encodable> for Span { 457,784 ( 0.03%) fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> opaque::EncodeResult { 343,338 ( 0.02%) let span = self.data(); . . // Don't serialize any `SyntaxContext`s from a proc-macro crate, . // since we don't load proc-macro dependencies during serialization. . // This means that any hygiene information from macros used *within* . // a proc-macro crate (e.g. invoking a macro that expands to a proc-macro . // definition) will be lost. . // . // This can show up in two ways: -- line 211 ---------------------------------------- -- line 228 ---------------------------------------- . // None of these user-visible effects should result in any . // cross-crate inconsistencies (getting one behavior in the same . // crate, and a different behavior in another crate) due to the . // limited surface that proc-macros can expose. . // . // IMPORTANT: If this is ever changed, be sure to update . // `rustc_span::hygiene::raw_encode_expn_id` to handle . // encoding `ExpnData` for proc-macro crates. 114,446 ( 0.01%) if s.is_proc_macro { . SyntaxContext::root().encode(s)?; . } else { 57,223 ( 0.00%) span.ctxt.encode(s)?; . } . 57,223 ( 0.00%) if self.is_dummy() { . return TAG_PARTIAL_SPAN.encode(s); . } . . // The Span infrastructure should make sure that this invariant holds: . debug_assert!(span.lo <= span.hi); . 285,302 ( 0.02%) if !s.source_file_cache.0.contains(span.lo) { 394 ( 0.00%) let source_map = s.tcx.sess.source_map(); 788 ( 0.00%) let source_file_index = source_map.lookup_source_file_idx(span.lo); 394 ( 0.00%) s.source_file_cache = 788 ( 0.00%) (source_map.files()[source_file_index].clone(), source_file_index); . } . 172,082 ( 0.01%) if !s.source_file_cache.0.contains(span.hi) { . // Unfortunately, macro expansion still sometimes generates Spans . // that malformed in this way. . return TAG_PARTIAL_SPAN.encode(s); . } . . let source_files = s.required_source_files.as_mut().expect("Already encoded SourceMap!"); . // Record the fact that we need to encode the data for this `SourceFile` 57,098 ( 0.00%) source_files.insert(s.source_file_cache.1); . . // There are two possible cases here: . // 1. This span comes from a 'foreign' crate - e.g. some crate upstream of the . // crate we are writing metadata for. When the metadata for *this* crate gets . // deserialized, the deserializer will need to know which crate it originally came . // from. We use `TAG_VALID_SPAN_FOREIGN` to indicate that a `CrateNum` should . // be deserialized after the rest of the span data, which tells the deserializer . // which crate contains the source map information. -- line 272 ---------------------------------------- -- line 274 ---------------------------------------- . // write `TAG_VALID_SPAN_LOCAL` to let the deserializer know that it should use . // our own source map information. . // . // If we're a proc-macro crate, we always treat this as a local `Span`. . // In `encode_source_map`, we serialize foreign `SourceFile`s into our metadata . // if we're a proc-macro crate. . // This allows us to avoid loading the dependencies of proc-macro crates: all of . // the information we need to decode `Span`s is stored in the proc-macro crate. 342,588 ( 0.02%) let (tag, lo, hi) = if s.source_file_cache.0.is_imported() && !s.is_proc_macro { . // To simplify deserialization, we 'rebase' this span onto the crate it originally came from . // (the crate that 'owns' the file it references. These rebased 'lo' and 'hi' values . // are relative to the source map information for the 'foreign' crate whose CrateNum . // we write into the metadata. This allows `imported_source_files` to binary . // search through the 'foreign' crate's source map information, using the . // deserialized 'lo' and 'hi' values directly. . // . // All of this logic ensures that the final result of deserialization is a 'normal' . // Span that can be used without any additional trouble. . let external_start_pos = { . // Introduce a new scope so that we drop the 'lock()' temporary 249 ( 0.00%) match &*s.source_file_cache.0.external_src.lock() { 83 ( 0.00%) ExternalSource::Foreign { original_start_pos, .. } => *original_start_pos, . src => panic!("Unexpected external source {:?}", src), . } . }; 249 ( 0.00%) let lo = (span.lo - s.source_file_cache.0.start_pos) + external_start_pos; 83 ( 0.00%) let hi = (span.hi - s.source_file_cache.0.start_pos) + external_start_pos; . . (TAG_VALID_SPAN_FOREIGN, lo, hi) . } else { 171,045 ( 0.01%) (TAG_VALID_SPAN_LOCAL, span.lo, span.hi) . }; . . tag.encode(s)?; . lo.encode(s)?; . . // Encode length which is usually less than span.hi and profits more . // from the variable-length integer encoding that we use. . let len = hi - lo; . len.encode(s)?; . 114,196 ( 0.01%) if tag == TAG_VALID_SPAN_FOREIGN { . // This needs to be two lines to avoid holding the `s.source_file_cache` . // while calling `cnum.encode(s)` 332 ( 0.00%) let cnum = s.source_file_cache.0.cnum; 249 ( 0.00%) cnum.encode(s)?; . } . . Ok(()) 457,784 ( 0.03%) } . } . . impl<'a, 'tcx> TyEncoder<'tcx> for EncodeContext<'a, 'tcx> { . const CLEAR_CROSS_CRATE: bool = true; . . fn position(&self) -> usize { . self.opaque.position() . } -- line 331 ---------------------------------------- -- line 361 ---------------------------------------- . } . . /// Helper trait to allow overloading `EncodeContext::lazy` for iterators. . trait EncodeContentsForLazy<'a, 'tcx, T: ?Sized + LazyMeta> { . fn encode_contents_for_lazy(self, ecx: &mut EncodeContext<'a, 'tcx>) -> T::Meta; . } . . impl<'a, 'tcx, T: Encodable>> EncodeContentsForLazy<'a, 'tcx, T> for &T { 5,728 ( 0.00%) fn encode_contents_for_lazy(self, ecx: &mut EncodeContext<'a, 'tcx>) { 2,553 ( 0.00%) self.encode(ecx).unwrap() 6 ( 0.00%) } . } . . impl<'a, 'tcx, T: Encodable>> EncodeContentsForLazy<'a, 'tcx, T> for T { 13,920 ( 0.00%) fn encode_contents_for_lazy(self, ecx: &mut EncodeContext<'a, 'tcx>) { 7,415 ( 0.00%) self.encode(ecx).unwrap() 8,871 ( 0.00%) } . } . . impl<'a, 'tcx, I, T: Encodable>> EncodeContentsForLazy<'a, 'tcx, [T]> for I . where . I: IntoIterator, . I::Item: EncodeContentsForLazy<'a, 'tcx, T>, . { 980 ( 0.00%) fn encode_contents_for_lazy(self, ecx: &mut EncodeContext<'a, 'tcx>) -> usize { 3,538 ( 0.00%) self.into_iter().map(|value| value.encode_contents_for_lazy(ecx)).count() 1,260 ( 0.00%) } . } . . // Shorthand for `$self.$tables.$table.set($def_id.index, $self.lazy($value))`, which would . // normally need extra variables to avoid errors about multiple mutable borrows. . macro_rules! record { . ($self:ident.$tables:ident.$table:ident[$def_id:expr] <- $value:expr) => {{ . { . let value = $value; . let lazy = $self.lazy(value); . $self.$tables.$table.set($def_id.index, lazy); . } . }}; . } . . impl<'a, 'tcx> EncodeContext<'a, 'tcx> { 3,450 ( 0.00%) fn emit_lazy_distance( . &mut self, . lazy: Lazy, . ) -> Result<(), ::Error> { . let pos = lazy.position.get(); 2,166 ( 0.00%) let distance = match self.lazy_state { . LazyState::NoNode => bug!("emit_lazy_distance: outside of a metadata node"), 642 ( 0.00%) LazyState::NodeStart(start) => { . let start = start.get(); 1,284 ( 0.00%) assert!(pos <= start); . start - pos . } 48 ( 0.00%) LazyState::Previous(last_pos) => { 48 ( 0.00%) assert!( . last_pos <= lazy.position, . "make sure that the calls to `lazy*` \ . are in the same order as the metadata fields", . ); 144 ( 0.00%) lazy.position.get() - last_pos.get() . } . }; 1,380 ( 0.00%) self.lazy_state = LazyState::Previous(NonZeroUsize::new(pos).unwrap()); . self.emit_usize(distance) 3,450 ( 0.00%) } . 7,262 ( 0.00%) fn lazy( . &mut self, . value: impl EncodeContentsForLazy<'a, 'tcx, T>, . ) -> Lazy { . let pos = NonZeroUsize::new(self.position()).unwrap(); . 8,799 ( 0.00%) assert_eq!(self.lazy_state, LazyState::NoNode); 26,542 ( 0.00%) self.lazy_state = LazyState::NodeStart(pos); 19,292 ( 0.00%) let meta = value.encode_contents_for_lazy(self); 10,854 ( 0.00%) self.lazy_state = LazyState::NoNode; . 18,675 ( 0.00%) assert!(pos.get() <= self.position()); . . Lazy::from_position_and_meta(pos, meta) 10,615 ( 0.00%) } . . fn encode_info_for_items(&mut self) { 9 ( 0.00%) self.encode_info_for_mod(CRATE_DEF_ID, self.tcx.hir().root_module()); . . // Proc-macro crates only export proc-macro items, which are looked . // up using `proc_macro_data` 2 ( 0.00%) if self.is_proc_macro { . return; . } . 6 ( 0.00%) self.tcx.hir().visit_all_item_likes(&mut self.as_deep_visitor()); . } . . fn encode_def_path_table(&mut self) { 4 ( 0.00%) let table = self.tcx.resolutions(()).definitions.def_path_table(); 2 ( 0.00%) if self.is_proc_macro { . for def_index in std::iter::once(CRATE_DEF_INDEX) . .chain(self.tcx.resolutions(()).proc_macros.iter().map(|p| p.local_def_index)) . { . let def_key = self.lazy(table.def_key(def_index)); . let def_path_hash = self.lazy(table.def_path_hash(def_index)); . self.tables.def_keys.set(def_index, def_key); . self.tables.def_path_hashes.set(def_index, def_path_hash); . } . } else { 5 ( 0.00%) for (def_index, def_key, def_path_hash) in table.enumerated_keys_and_path_hashes() { . let def_key = self.lazy(def_key); . let def_path_hash = self.lazy(def_path_hash); 3,344 ( 0.00%) self.tables.def_keys.set(def_index, def_key); 3,344 ( 0.00%) self.tables.def_path_hashes.set(def_index, def_path_hash); . } . } . } . . fn encode_def_path_hash_map(&mut self) -> Lazy> { . self.lazy(DefPathHashMapRef::BorrowedFromTcx( 2 ( 0.00%) self.tcx.resolutions(()).definitions.def_path_hash_to_def_index_map(), . )) . } . . fn encode_source_map(&mut self) -> Lazy<[rustc_span::SourceFile]> { 2 ( 0.00%) let source_map = self.tcx.sess.source_map(); 3 ( 0.00%) let all_source_files = source_map.files(); . . // By replacing the `Option` with `None`, we ensure that we can't . // accidentally serialize any more `Span`s after the source map encoding . // is done. . let required_source_files = self.required_source_files.take().unwrap(); . . let adapted = all_source_files . .iter() . .enumerate() . .filter(|(idx, source_file)| { . // Only serialize `SourceFile`s that were used . // during the encoding of a `Span` 635 ( 0.00%) required_source_files.contains(*idx) && . // Don't serialize imported `SourceFile`s, unless . // we're in a proc-macro crate. 56 ( 0.00%) (!source_file.is_imported() || self.is_proc_macro) . }) . .map(|(_, source_file)| { 15 ( 0.00%) let mut adapted = match source_file.name { . FileName::Real(ref realname) => { 10 ( 0.00%) let mut adapted = (**source_file).clone(); 80 ( 0.00%) adapted.name = FileName::Real(match realname { . RealFileName::LocalPath(path_to_file) => { . // Prepend path of working directory onto potentially . // relative paths, because they could become relative . // to a wrong directory. . // We include `working_dir` as part of the crate hash, . // so it's okay for us to use it as part of the encoded . // metadata. 10 ( 0.00%) let working_dir = &self.tcx.sess.opts.working_dir; 10 ( 0.00%) match working_dir { . RealFileName::LocalPath(absolute) => { . // Although neither working_dir or the file name were subject . // to path remapping, the concatenation between the two may . // be. Hence we need to do a remapping here. . let joined = Path::new(absolute).join(path_to_file); 35 ( 0.00%) let (joined, remapped) = 55 ( 0.00%) source_map.path_mapping().map_prefix(joined); 10 ( 0.00%) if remapped { . RealFileName::Remapped { . local_path: None, . virtual_name: joined, . } . } else { . RealFileName::LocalPath(joined) . } . } -- line 532 ---------------------------------------- -- line 544 ---------------------------------------- . RealFileName::Remapped { local_path: _, virtual_name } => { . RealFileName::Remapped { . // We do not want any local path to be exported into metadata . local_path: None, . virtual_name: virtual_name.clone(), . } . } . }); 10 ( 0.00%) adapted.name_hash = { . let mut hasher: StableHasher = StableHasher::new(); 5 ( 0.00%) adapted.name.hash(&mut hasher); . hasher.finish::() . }; 5 ( 0.00%) Lrc::new(adapted) . } . . // expanded code, not from a file . _ => source_file.clone(), . }; . . // We're serializing this `SourceFile` into our crate metadata, . // so mark it as coming from this crate. . // This also ensures that we don't try to deserialize the . // `CrateNum` for a proc-macro dependency - since proc macro . // dependencies aren't loaded when we deserialize a proc-macro, . // trying to remap the `CrateNum` would fail. 10 ( 0.00%) if self.is_proc_macro { . Lrc::make_mut(&mut adapted).cnum = LOCAL_CRATE; . } . adapted . }) . .collect::>(); . . self.lazy(adapted.iter().map(|rc| &**rc)) . } . 8 ( 0.00%) fn encode_crate_root(&mut self) -> Lazy> { . let mut i = self.position(); . . // Encode the crate deps . let crate_deps = self.encode_crate_deps(); . let dylib_dependency_formats = self.encode_dylib_dependency_formats(); 5 ( 0.00%) let dep_bytes = self.position() - i; . . // Encode the lib features. . i = self.position(); . let lib_features = self.encode_lib_features(); 7 ( 0.00%) let lib_feature_bytes = self.position() - i; . . // Encode the language items. . i = self.position(); . let lang_items = self.encode_lang_items(); . let lang_items_missing = self.encode_lang_items_missing(); 5 ( 0.00%) let lang_item_bytes = self.position() - i; . . // Encode the diagnostic items. . i = self.position(); . let diagnostic_items = self.encode_diagnostic_items(); 5 ( 0.00%) let diagnostic_item_bytes = self.position() - i; . . // Encode the native libraries used . i = self.position(); . let native_libraries = self.encode_native_libraries(); 4 ( 0.00%) let native_lib_bytes = self.position() - i; . . let foreign_modules = self.encode_foreign_modules(); . . // Encode DefPathTable . i = self.position(); . self.encode_def_path_table(); 5 ( 0.00%) let def_path_table_bytes = self.position() - i; . . // Encode the def IDs of traits, for rustdoc and diagnostics. . i = self.position(); . let traits = self.encode_traits(); 5 ( 0.00%) let traits_bytes = self.position() - i; . . // Encode the def IDs of impls, for coherence checking. . i = self.position(); . let impls = self.encode_impls(); 5 ( 0.00%) let impls_bytes = self.position() - i; . 3 ( 0.00%) let tcx = self.tcx; . . // Encode MIR. . i = self.position(); . self.encode_mir(); 5 ( 0.00%) let mir_bytes = self.position() - i; . . // Encode the items. . i = self.position(); . self.encode_def_ids(); . self.encode_info_for_items(); 4 ( 0.00%) let item_bytes = self.position() - i; . . // Encode the allocation index . let interpret_alloc_index = { . let mut interpret_alloc_index = Vec::new(); . let mut n = 0; . trace!("beginning to encode alloc ids"); . loop { . let new_n = self.interpret_allocs.len(); . // if we have found new ids, serialize those, too 2 ( 0.00%) if n == new_n { . // otherwise, abort . break; . } . trace!("encoding {} further alloc ids", new_n - n); . for idx in n..new_n { . let id = self.interpret_allocs[idx]; . let pos = self.position() as u32; . interpret_alloc_index.push(pos); . interpret::specialized_encode_alloc_id(self, tcx, id).unwrap(); . } . n = new_n; . } 6 ( 0.00%) self.lazy(interpret_alloc_index) . }; . . // Encode the proc macro data. This affects 'tables', . // so we need to do this before we encode the tables . i = self.position(); . let proc_macro_data = self.encode_proc_macros(); 4 ( 0.00%) let proc_macro_data_bytes = self.position() - i; . . i = self.position(); 4 ( 0.00%) let tables = self.tables.encode(&mut self.opaque); 4 ( 0.00%) let tables_bytes = self.position() - i; . . // Encode exported symbols info. This is prefetched in `encode_metadata` so we encode . // this as late as possible to give the prefetching as much time as possible to complete. . i = self.position(); . let exported_symbols = tcx.exported_symbols(LOCAL_CRATE); . let exported_symbols = self.encode_exported_symbols(&exported_symbols); 4 ( 0.00%) let exported_symbols_bytes = self.position() - i; . . // Encode the hygiene data, . // IMPORTANT: this *must* be the last thing that we encode (other than `SourceMap`). The process . // of encoding other items (e.g. `optimized_mir`) may cause us to load . // data from the incremental cache. If this causes us to deserialize a `Span`, . // then we may load additional `SyntaxContext`s into the global `HygieneData`. . // Therefore, we need to encode the hygiene data last to ensure that we encode . // any `SyntaxContext`s that might be used. . i = self.position(); . let (syntax_contexts, expn_data, expn_hashes) = self.encode_hygiene(); 5 ( 0.00%) let hygiene_bytes = self.position() - i; . . i = self.position(); . let def_path_hash_map = self.encode_def_path_hash_map(); 1 ( 0.00%) let def_path_hash_map_bytes = self.position() - i; . . // Encode source_map. This needs to be done last, . // since encoding `Span`s tells us which `SourceFiles` we actually . // need to encode. . i = self.position(); . let source_map = self.encode_source_map(); 4 ( 0.00%) let source_map_bytes = self.position() - i; . 3 ( 0.00%) let attrs = tcx.hir().krate_attrs(); 7 ( 0.00%) let has_default_lib_allocator = tcx.sess.contains_name(&attrs, sym::default_lib_allocator); . 118 ( 0.00%) let root = self.lazy(CrateRoot { . name: tcx.crate_name(LOCAL_CRATE), 3 ( 0.00%) extra_filename: tcx.sess.opts.cg.extra_filename.clone(), 1 ( 0.00%) triple: tcx.sess.opts.target_triple.clone(), . hash: tcx.crate_hash(LOCAL_CRATE), . stable_crate_id: tcx.def_path_hash(LOCAL_CRATE.as_def_id()).stable_crate_id(), 3 ( 0.00%) panic_strategy: tcx.sess.panic_strategy(), 3 ( 0.00%) panic_in_drop_strategy: tcx.sess.opts.debugging_opts.panic_in_drop, 2 ( 0.00%) edition: tcx.sess.edition(), . has_global_allocator: tcx.has_global_allocator(LOCAL_CRATE), . has_panic_handler: tcx.has_panic_handler(LOCAL_CRATE), . has_default_lib_allocator, . proc_macro_data, 6 ( 0.00%) compiler_builtins: tcx.sess.contains_name(&attrs, sym::compiler_builtins), 6 ( 0.00%) needs_allocator: tcx.sess.contains_name(&attrs, sym::needs_allocator), 6 ( 0.00%) needs_panic_runtime: tcx.sess.contains_name(&attrs, sym::needs_panic_runtime), 6 ( 0.00%) no_builtins: tcx.sess.contains_name(&attrs, sym::no_builtins), 5 ( 0.00%) panic_runtime: tcx.sess.contains_name(&attrs, sym::panic_runtime), 5 ( 0.00%) profiler_runtime: tcx.sess.contains_name(&attrs, sym::profiler_runtime), 2 ( 0.00%) symbol_mangling_version: tcx.sess.opts.get_symbol_mangling_version(), . . crate_deps, . dylib_dependency_formats, . lib_features, . lang_items, . diagnostic_items, . lang_items_missing, . native_libraries, . foreign_modules, . source_map, . traits, . impls, . exported_symbols, . interpret_alloc_index, 2 ( 0.00%) tables, . syntax_contexts, . expn_data, . expn_hashes, . def_path_hash_map, . }); . 1 ( 0.00%) let total_bytes = self.position(); . 4 ( 0.00%) if tcx.sess.meta_stats() { . let mut zero_bytes = 0; . for e in self.opaque.data.iter() { . if *e == 0 { . zero_bytes += 1; . } . } . . eprintln!("metadata stats:"); -- line 756 ---------------------------------------- -- line 770 ---------------------------------------- . eprintln!(" item bytes: {}", item_bytes); . eprintln!(" table bytes: {}", tables_bytes); . eprintln!(" hygiene bytes: {}", hygiene_bytes); . eprintln!(" zero bytes: {}", zero_bytes); . eprintln!(" total bytes: {}", total_bytes); . } . . root 9 ( 0.00%) } . } . . fn should_encode_visibility(def_kind: DefKind) -> bool { . match def_kind { . DefKind::Mod . | DefKind::Struct . | DefKind::Union . | DefKind::Enum -- line 786 ---------------------------------------- -- line 853 ---------------------------------------- . /// Whether we should encode MIR. . /// . /// Computing, optimizing and encoding the MIR is a relatively expensive operation. . /// We want to avoid this work when not required. Therefore: . /// - we only compute `mir_for_ctfe` on items with const-eval semantics; . /// - we skip `optimized_mir` for check runs. . /// . /// Return a pair, resp. for CTFE and for LLVM. 1,620 ( 0.00%) fn should_encode_mir(tcx: TyCtxt<'_>, def_id: LocalDefId) -> (bool, bool) { 900 ( 0.00%) match tcx.def_kind(def_id) { . // Constructors . DefKind::Ctor(_, _) => { 24 ( 0.00%) let mir_opt_base = tcx.sess.opts.output_types.should_codegen() . || tcx.sess.opts.debugging_opts.always_encode_mir; . (true, mir_opt_base) . } . // Constants . DefKind::AnonConst . | DefKind::InlineConst . | DefKind::AssocConst . | DefKind::Static . | DefKind::Const => (true, false), . // Full-fledged functions . DefKind::AssocFn | DefKind::Fn => { . let generics = tcx.generics_of(def_id); 864 ( 0.00%) let needs_inline = (generics.requires_monomorphization(tcx) 288 ( 0.00%) || tcx.codegen_fn_attrs(def_id).requests_inline()) 327 ( 0.00%) && tcx.sess.opts.output_types.should_codegen(); . // The function has a `const` modifier or is annotated with `default_method_body_is_const`. 144 ( 0.00%) let is_const_fn = tcx.is_const_fn_raw(def_id.to_def_id()) 720 ( 0.00%) || tcx.has_attr(def_id.to_def_id(), sym::default_method_body_is_const); . let always_encode_mir = tcx.sess.opts.debugging_opts.always_encode_mir; 288 ( 0.00%) (is_const_fn, needs_inline || always_encode_mir) . } . // Closures can't be const fn. . DefKind::Closure => { . let generics = tcx.generics_of(def_id); 88 ( 0.00%) let needs_inline = (generics.requires_monomorphization(tcx) . || tcx.codegen_fn_attrs(def_id).requests_inline()) 44 ( 0.00%) && tcx.sess.opts.output_types.should_codegen(); 44 ( 0.00%) let always_encode_mir = tcx.sess.opts.debugging_opts.always_encode_mir; 44 ( 0.00%) (false, needs_inline || always_encode_mir) . } . // Generators require optimized MIR to compute layout. . DefKind::Generator => (false, true), . // The others don't have MIR. . _ => (false, false), . } 1,620 ( 0.00%) } . . fn should_encode_variances(def_kind: DefKind) -> bool { . match def_kind { . DefKind::Struct . | DefKind::Union . | DefKind::Enum . | DefKind::Variant . | DefKind::Fn -- line 909 ---------------------------------------- -- line 969 ---------------------------------------- . | DefKind::LifetimeParam . | DefKind::GlobalAsm . | DefKind::ExternCrate => false, . } . } . . impl<'a, 'tcx> EncodeContext<'a, 'tcx> { . fn encode_def_ids(&mut self) { 2 ( 0.00%) if self.is_proc_macro { . return; . } 1 ( 0.00%) let tcx = self.tcx; 3 ( 0.00%) let hir = tcx.hir(); 45 ( 0.00%) for local_id in hir.iter_local_def_id() { . let def_id = local_id.to_def_id(); . let def_kind = tcx.opt_def_kind(local_id); 5,016 ( 0.00%) let def_kind = if let Some(def_kind) = def_kind { def_kind } else { continue }; 11,792 ( 0.00%) record!(self.tables.def_kind[def_id] <- match def_kind { . // Replace Ctor by the enclosing object to avoid leaking details in children crates. . DefKind::Ctor(CtorOf::Struct, _) => DefKind::Struct, . DefKind::Ctor(CtorOf::Variant, _) => DefKind::Variant, . def_kind => def_kind, . }); 2,211 ( 0.00%) record!(self.tables.span[def_id] <- tcx.def_span(def_id)); 8,844 ( 0.00%) record!(self.tables.attributes[def_id] <- tcx.get_attrs(def_id)); 5,896 ( 0.00%) record!(self.tables.expn_that_defined[def_id] <- self.tcx.expn_that_defined(def_id)); . if should_encode_visibility(def_kind) { 3,918 ( 0.00%) record!(self.tables.visibility[def_id] <- self.tcx.visibility(def_id)); . } . if should_encode_stability(def_kind) { . self.encode_stability(def_id); . self.encode_const_stability(def_id); 3,264 ( 0.00%) self.encode_deprecation(def_id); . } . if should_encode_variances(def_kind) { 738 ( 0.00%) let v = self.tcx.variances_of(def_id); 2,583 ( 0.00%) record!(self.tables.variances[def_id] <- v); . } . if should_encode_generics(def_kind) { . let g = tcx.generics_of(def_id); 2,220 ( 0.00%) record!(self.tables.generics[def_id] <- g); 6,660 ( 0.00%) record!(self.tables.explicit_predicates[def_id] <- self.tcx.explicit_predicates_of(def_id)); 555 ( 0.00%) let inferred_outlives = self.tcx.inferred_outlives_of(def_id); 651 ( 0.00%) if !inferred_outlives.is_empty() { . record!(self.tables.inferred_outlives[def_id] <- inferred_outlives); . } . } 5,159 ( 0.00%) if let DefKind::Trait | DefKind::TraitAlias = def_kind { 14 ( 0.00%) record!(self.tables.super_predicates[def_id] <- self.tcx.super_predicates_of(def_id)); . } . } . let inherent_impls = tcx.crate_inherent_impls(()); . for (def_id, implementations) in inherent_impls.inherent_impls.iter() { 6 ( 0.00%) if implementations.is_empty() { . continue; . } 54 ( 0.00%) record!(self.tables.inherent_impls[def_id.to_def_id()] <- implementations.iter().map(|&def_id| { 6 ( 0.00%) assert!(def_id.is_local()); . def_id.index . })); . } . } . 3,878 ( 0.00%) fn encode_item_type(&mut self, def_id: DefId) { . debug!("EncodeContext::encode_item_type({:?})", def_id); 3,324 ( 0.00%) record!(self.tables.ty[def_id] <- self.tcx.type_of(def_id)); 4,432 ( 0.00%) } . . fn encode_enum_variant_info(&mut self, def: &ty::AdtDef, index: VariantIdx) { . let tcx = self.tcx; . let variant = &def.variants[index]; 384 ( 0.00%) let def_id = variant.def_id; . debug!("EncodeContext::encode_enum_variant_info({:?})", def_id); . 576 ( 0.00%) let data = VariantData { 96 ( 0.00%) ctor_kind: variant.ctor_kind, . discr: variant.discr, 96 ( 0.00%) ctor: variant.ctor_def_id.map(|did| did.index), 96 ( 0.00%) is_non_exhaustive: variant.is_field_list_non_exhaustive(), . }; . . record!(self.tables.kind[def_id] <- EntryKind::Variant(self.lazy(data))); . record!(self.tables.children[def_id] <- variant.fields.iter().map(|f| { 3 ( 0.00%) assert!(f.did.is_local()); . f.did.index . })); 96 ( 0.00%) self.encode_ident_span(def_id, variant.ident(tcx)); 96 ( 0.00%) self.encode_item_type(def_id); 96 ( 0.00%) if variant.ctor_kind == CtorKind::Fn { . // FIXME(eddyb) encode signature only in `encode_enum_variant_ctor`. 12 ( 0.00%) if let Some(ctor_def_id) = variant.ctor_def_id { . record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(ctor_def_id)); . } . } . } . . fn encode_enum_variant_ctor(&mut self, def: &ty::AdtDef, index: VariantIdx) { . let tcx = self.tcx; . let variant = &def.variants[index]; 480 ( 0.00%) let def_id = variant.ctor_def_id.unwrap(); . debug!("EncodeContext::encode_enum_variant_ctor({:?})", def_id); . . // FIXME(eddyb) encode only the `CtorKind` for constructors. . let data = VariantData { 96 ( 0.00%) ctor_kind: variant.ctor_kind, . discr: variant.discr, . ctor: Some(def_id.index), 96 ( 0.00%) is_non_exhaustive: variant.is_field_list_non_exhaustive(), . }; . 384 ( 0.00%) record!(self.tables.kind[def_id] <- EntryKind::Variant(self.lazy(data))); 288 ( 0.00%) self.encode_item_type(def_id); 96 ( 0.00%) if variant.ctor_kind == CtorKind::Fn { . record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id)); . } . } . 130 ( 0.00%) fn encode_info_for_mod(&mut self, local_def_id: LocalDefId, md: &hir::Mod<'_>) { 26 ( 0.00%) let tcx = self.tcx; . let def_id = local_def_id.to_def_id(); . debug!("EncodeContext::encode_info_for_mod({:?})", def_id); . . // If we are encoding a proc-macro crates, `encode_info_for_mod` will . // only ever get called for the crate root. We still want to encode . // the crate root for consistency with other crates (some of the resolver . // code uses it). However, we skip encoding anything relating to child . // items - we encode information about proc-macros later on. 39 ( 0.00%) let reexports = if !self.is_proc_macro { 26 ( 0.00%) match tcx.module_reexports(local_def_id) { . Some(exports) => self.lazy(exports), . _ => Lazy::empty(), . } . } else { . Lazy::empty() . }; . 52 ( 0.00%) record!(self.tables.kind[def_id] <- EntryKind::Mod(reexports)); 26 ( 0.00%) if self.is_proc_macro { . // Encode this here because we don't do it in encode_def_ids. . record!(self.tables.expn_that_defined[def_id] <- tcx.expn_that_defined(local_def_id)); . } else { . let direct_children = md.item_ids.iter().map(|item_id| item_id.def_id.local_def_index); . // Foreign items are planted into their parent modules from name resolution point of view. 26 ( 0.00%) let tcx = self.tcx; . let foreign_item_children = md . .item_ids . .iter() 1,180 ( 0.00%) .filter_map(|item_id| match tcx.hir().item(*item_id).kind { . hir::ItemKind::ForeignMod { items, .. } => { . Some(items.iter().map(|fi_ref| fi_ref.id.def_id.local_def_index)) . } . _ => None, . }) . .flatten(); . 91 ( 0.00%) record!(self.tables.children[def_id] <- direct_children.chain(foreign_item_children)); . } 104 ( 0.00%) } . . fn encode_field( . &mut self, . adt_def: &ty::AdtDef, . variant_index: VariantIdx, . field_index: usize, . ) { . let variant = &adt_def.variants[variant_index]; . let field = &variant.fields[field_index]; . . let def_id = field.did; . debug!("EncodeContext::encode_field({:?})", def_id); . . record!(self.tables.kind[def_id] <- EntryKind::Field); 68 ( 0.00%) self.encode_ident_span(def_id, field.ident(self.tcx)); 102 ( 0.00%) self.encode_item_type(def_id); . } . . fn encode_struct_ctor(&mut self, adt_def: &ty::AdtDef, def_id: DefId) { . debug!("EncodeContext::encode_struct_ctor({:?})", def_id); 1 ( 0.00%) let tcx = self.tcx; 3 ( 0.00%) let variant = adt_def.non_enum_variant(); . . let data = VariantData { 1 ( 0.00%) ctor_kind: variant.ctor_kind, . discr: variant.discr, . ctor: Some(def_id.index), 1 ( 0.00%) is_non_exhaustive: variant.is_field_list_non_exhaustive(), . }; . 7 ( 0.00%) record!(self.tables.kind[def_id] <- EntryKind::Struct(self.lazy(data), adt_def.repr)); 5 ( 0.00%) self.encode_item_type(def_id); 1 ( 0.00%) if variant.ctor_kind == CtorKind::Fn { 1 ( 0.00%) record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id)); . } . } . . fn encode_explicit_item_bounds(&mut self, def_id: DefId) { . debug!("EncodeContext::encode_explicit_item_bounds({:?})", def_id); . let bounds = self.tcx.explicit_item_bounds(def_id); . if !bounds.is_empty() { . record!(self.tables.explicit_item_bounds[def_id] <- bounds); . } . } . . fn encode_info_for_trait_item(&mut self, def_id: DefId) { . debug!("EncodeContext::encode_info_for_trait_item({:?})", def_id); 9 ( 0.00%) let tcx = self.tcx; . 63 ( 0.00%) let ast_item = tcx.hir().expect_trait_item(def_id.expect_local()); . let trait_item = tcx.associated_item(def_id); . 45 ( 0.00%) let container = match trait_item.defaultness { . hir::Defaultness::Default { has_value: true } => AssocContainer::TraitWithDefault, . hir::Defaultness::Default { has_value: false } => AssocContainer::TraitRequired, . hir::Defaultness::Final => span_bug!(ast_item.span, "traits cannot have final items"), . }; . 54 ( 0.00%) match trait_item.kind { . ty::AssocKind::Const => { . let rendered = rustc_hir_pretty::to_string( . &(&self.tcx.hir() as &dyn intravisit::Map<'_>), . |s| s.print_trait_item(ast_item), . ); . let rendered_const = self.lazy(RenderedConst(rendered)); . . record!(self.tables.kind[def_id] <- EntryKind::AssocConst( . container, . Default::default(), . rendered_const, . )); . } . ty::AssocKind::Fn => { 18 ( 0.00%) let fn_data = if let hir::TraitItemKind::Fn(m_sig, m) = &ast_item.kind { 18 ( 0.00%) let param_names = match *m { . hir::TraitFn::Required(ref names) => self.encode_fn_param_names(names), . hir::TraitFn::Provided(body) => self.encode_fn_param_names_for_body(body), . }; . FnData { . asyncness: m_sig.header.asyncness, . constness: hir::Constness::NotConst, . param_names, . } -- line 1209 ---------------------------------------- -- line 1217 ---------------------------------------- . }))); . } . ty::AssocKind::Type => { . self.encode_explicit_item_bounds(def_id); . record!(self.tables.kind[def_id] <- EntryKind::AssocType(container)); . } . } . self.encode_ident_span(def_id, ast_item.ident); 27 ( 0.00%) match trait_item.kind { . ty::AssocKind::Const | ty::AssocKind::Fn => { . self.encode_item_type(def_id); . } . ty::AssocKind::Type => { . if trait_item.defaultness.has_value() { . self.encode_item_type(def_id); . } . } . } 9 ( 0.00%) if trait_item.kind == ty::AssocKind::Fn { . record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id)); . } . } . . fn encode_info_for_impl_item(&mut self, def_id: DefId) { . debug!("EncodeContext::encode_info_for_impl_item({:?})", def_id); 244 ( 0.00%) let tcx = self.tcx; . 732 ( 0.00%) let ast_item = self.tcx.hir().expect_impl_item(def_id.expect_local()); 122 ( 0.00%) let impl_item = self.tcx.associated_item(def_id); . 488 ( 0.00%) let container = match impl_item.defaultness { . hir::Defaultness::Default { has_value: true } => AssocContainer::ImplDefault, . hir::Defaultness::Final => AssocContainer::ImplFinal, . hir::Defaultness::Default { has_value: false } => { . span_bug!(ast_item.span, "impl items always have values (currently)") . } . }; . 732 ( 0.00%) match impl_item.kind { . ty::AssocKind::Const => { . if let hir::ImplItemKind::Const(_, body_id) = ast_item.kind { . let qualifs = self.tcx.at(ast_item.span).mir_const_qualif(def_id); . . record!(self.tables.kind[def_id] <- EntryKind::AssocConst( . container, . qualifs, . self.encode_rendered_const_for_body(body_id)) . ); . } else { . bug!() . } . } . ty::AssocKind::Fn => { 224 ( 0.00%) let fn_data = if let hir::ImplItemKind::Fn(ref sig, body) = ast_item.kind { . FnData { . asyncness: sig.header.asyncness, . // Can be inside `impl const Trait`, so using sig.header.constness is not reliable 112 ( 0.00%) constness: if self.tcx.is_const_fn_raw(def_id) { . hir::Constness::Const . } else { . hir::Constness::NotConst . }, . param_names: self.encode_fn_param_names_for_body(body), . } . } else { . bug!() -- line 1282 ---------------------------------------- -- line 1286 ---------------------------------------- . container, . has_self: impl_item.fn_has_self_parameter, . }))); . } . ty::AssocKind::Type => { . record!(self.tables.kind[def_id] <- EntryKind::AssocType(container)); . } . } 366 ( 0.00%) self.encode_ident_span(def_id, impl_item.ident(self.tcx)); 610 ( 0.00%) self.encode_item_type(def_id); 488 ( 0.00%) if let Some(trait_item_def_id) = impl_item.trait_item_def_id { . record!(self.tables.trait_item_def_id[def_id] <- trait_item_def_id); . } 122 ( 0.00%) if impl_item.kind == ty::AssocKind::Fn { . record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id)); . } . } . 256 ( 0.00%) fn encode_fn_param_names_for_body(&mut self, body_id: hir::BodyId) -> Lazy<[Ident]> { 944 ( 0.00%) self.lazy(self.tcx.hir().body_param_names(body_id)) 256 ( 0.00%) } . . fn encode_fn_param_names(&mut self, param_names: &[Ident]) -> Lazy<[Ident]> { . self.lazy(param_names.iter()) . } . . fn encode_mir(&mut self) { 3 ( 0.00%) if self.is_proc_macro { . return; . } . . let keys_and_jobs = self . .tcx . .mir_keys(()) . .iter() . .filter_map(|&def_id| { 900 ( 0.00%) let (encode_const, encode_opt) = should_encode_mir(self.tcx, def_id); 582 ( 0.00%) if encode_const || encode_opt { 28 ( 0.00%) Some((def_id, encode_const, encode_opt)) . } else { . None . } 360 ( 0.00%) }) . .collect::>(); 75 ( 0.00%) for (def_id, encode_const, encode_opt) in keys_and_jobs.into_iter() { . debug_assert!(encode_const || encode_opt); . . debug!("EntryBuilder::encode_mir({:?})", def_id); 14 ( 0.00%) if encode_opt { . record!(self.tables.mir[def_id.to_def_id()] <- self.tcx.optimized_mir(def_id)); . } 14 ( 0.00%) if encode_const { 56 ( 0.00%) record!(self.tables.mir_for_ctfe[def_id.to_def_id()] <- self.tcx.mir_for_ctfe(def_id)); . . // FIXME(generic_const_exprs): this feels wrong to have in `encode_mir` 14 ( 0.00%) let abstract_const = self.tcx.thir_abstract_const(def_id); 56 ( 0.00%) if let Ok(Some(abstract_const)) = abstract_const { . record!(self.tables.thir_abstract_consts[def_id.to_def_id()] <- abstract_const); . } . } 56 ( 0.00%) record!(self.tables.promoted_mir[def_id.to_def_id()] <- self.tcx.promoted_mir(def_id)); . . let instance = . ty::InstanceDef::Item(ty::WithOptConstParam::unknown(def_id.to_def_id())); 14 ( 0.00%) let unused = self.tcx.unused_generic_params(instance); 14 ( 0.00%) if !unused.is_empty() { . record!(self.tables.unused_generic_params[def_id.to_def_id()] <- unused); . } . } . } . . fn encode_stability(&mut self, def_id: DefId) { . debug!("EncodeContext::encode_stability({:?})", def_id); . . // The query lookup can take a measurable amount of time in crates with many items. Check if . // the stability attributes are even enabled before using their queries. 4,352 ( 0.00%) if self.feat.staged_api || self.tcx.sess.opts.debugging_opts.force_unstable_if_unmarked { . if let Some(stab) = self.tcx.lookup_stability(def_id) { . record!(self.tables.stability[def_id] <- stab) . } . } . } . . fn encode_const_stability(&mut self, def_id: DefId) { . debug!("EncodeContext::encode_const_stability({:?})", def_id); . . // The query lookup can take a measurable amount of time in crates with many items. Check if . // the stability attributes are even enabled before using their queries. 3,808 ( 0.00%) if self.feat.staged_api || self.tcx.sess.opts.debugging_opts.force_unstable_if_unmarked { . if let Some(stab) = self.tcx.lookup_const_stability(def_id) { . record!(self.tables.const_stability[def_id] <- stab) . } . } . } . 3,264 ( 0.00%) fn encode_deprecation(&mut self, def_id: DefId) { . debug!("EncodeContext::encode_deprecation({:?})", def_id); 2,720 ( 0.00%) if let Some(depr) = self.tcx.lookup_deprecation(def_id) { . record!(self.tables.deprecation[def_id] <- depr); . } 2,720 ( 0.00%) } . 60 ( 0.00%) fn encode_rendered_const_for_body(&mut self, body_id: hir::BodyId) -> Lazy { 30 ( 0.00%) let hir = self.tcx.hir(); 20 ( 0.00%) let body = hir.body(body_id); 80 ( 0.00%) let rendered = rustc_hir_pretty::to_string(&(&hir as &dyn intravisit::Map<'_>), |s| { 30 ( 0.00%) s.print_expr(&body.value) . }); 20 ( 0.00%) let rendered_const = &RenderedConst(rendered); . self.lazy(rendered_const) 70 ( 0.00%) } . 1,665 ( 0.00%) fn encode_info_for_item(&mut self, def_id: DefId, item: &'tcx hir::Item<'tcx>) { . let tcx = self.tcx; . . debug!("EncodeContext::encode_info_for_item({:?})", def_id); . . self.encode_ident_span(def_id, item.ident); . 1,110 ( 0.00%) let entry_kind = match item.kind { . hir::ItemKind::Static(_, hir::Mutability::Mut, _) => EntryKind::MutStatic, . hir::ItemKind::Static(_, hir::Mutability::Not, _) => EntryKind::ImmStatic, 24 ( 0.00%) hir::ItemKind::Const(_, body_id) => { 24 ( 0.00%) let qualifs = self.tcx.at(item.span).mir_const_qualif(def_id); 56 ( 0.00%) EntryKind::Const(qualifs, self.encode_rendered_const_for_body(body_id)) . } 64 ( 0.00%) hir::ItemKind::Fn(ref sig, .., body) => { . let data = FnData { 32 ( 0.00%) asyncness: sig.header.asyncness, 32 ( 0.00%) constness: sig.header.constness, 64 ( 0.00%) param_names: self.encode_fn_param_names_for_body(body), . }; . . EntryKind::Fn(self.lazy(data)) . } . hir::ItemKind::Macro(ref macro_def) => { . EntryKind::MacroDef(self.lazy(macro_def.clone())) . } . hir::ItemKind::Mod(ref m) => { 144 ( 0.00%) return self.encode_info_for_mod(item.def_id, m); . } . hir::ItemKind::ForeignMod { .. } => EntryKind::ForeignMod, . hir::ItemKind::GlobalAsm(..) => EntryKind::GlobalAsm, . hir::ItemKind::TyAlias(..) => EntryKind::Type, . hir::ItemKind::OpaqueTy(..) => { . self.encode_explicit_item_bounds(def_id); . EntryKind::OpaqueTy . } 66 ( 0.00%) hir::ItemKind::Enum(..) => EntryKind::Enum(self.tcx.adt_def(def_id).repr), . hir::ItemKind::Struct(ref struct_def, _) => { 24 ( 0.00%) let adt_def = self.tcx.adt_def(def_id); 36 ( 0.00%) let variant = adt_def.non_enum_variant(); . . // Encode def_ids for each field and method . // for methods, write all the stuff get_trait_method . // needs to know 48 ( 0.00%) let ctor = struct_def . .ctor_hir_id() 4 ( 0.00%) .map(|ctor_hir_id| self.tcx.hir().local_def_id(ctor_hir_id).local_def_index); . . EntryKind::Struct( . self.lazy(VariantData { 12 ( 0.00%) ctor_kind: variant.ctor_kind, 48 ( 0.00%) discr: variant.discr, . ctor, . is_non_exhaustive: variant.is_field_list_non_exhaustive(), . }), 36 ( 0.00%) adt_def.repr, . ) . } . hir::ItemKind::Union(..) => { . let adt_def = self.tcx.adt_def(def_id); . let variant = adt_def.non_enum_variant(); . . EntryKind::Union( . self.lazy(VariantData { -- line 1461 ---------------------------------------- -- line 1462 ---------------------------------------- . ctor_kind: variant.ctor_kind, . discr: variant.discr, . ctor: None, . is_non_exhaustive: variant.is_field_list_non_exhaustive(), . }), . adt_def.repr, . ) . } 436 ( 0.00%) hir::ItemKind::Impl(hir::Impl { defaultness, constness, .. }) => { 424 ( 0.00%) let trait_ref = self.tcx.impl_trait_ref(def_id); 218 ( 0.00%) let polarity = self.tcx.impl_polarity(def_id); 218 ( 0.00%) let parent = if let Some(trait_ref) = trait_ref { 103 ( 0.00%) let trait_def = self.tcx.trait_def(trait_ref.def_id); 618 ( 0.00%) trait_def.ancestors(self.tcx, def_id).ok().and_then(|mut an| { 618 ( 0.00%) an.nth(1).and_then(|node| match node { . specialization_graph::Node::Impl(parent) => Some(parent), . _ => None, . }) . }) . } else { . None . }; . . // if this is an impl of `CoerceUnsized`, create its . // "unsized info", else just store None . let coerce_unsized_info = trait_ref.and_then(|t| { 618 ( 0.00%) if Some(t.def_id) == self.tcx.lang_items().coerce_unsized_trait() { . Some(self.tcx.at(item.span).coerce_unsized_info(def_id)) . } else { . None . } . }); . . let data = ImplData { . polarity, -- line 1496 ---------------------------------------- -- line 1498 ---------------------------------------- . constness, . parent_impl: parent, . coerce_unsized_info, . }; . . EntryKind::Impl(self.lazy(data)) . } . hir::ItemKind::Trait(..) => { 2 ( 0.00%) let trait_def = self.tcx.trait_def(def_id); . let data = TraitData { 1 ( 0.00%) unsafety: trait_def.unsafety, 2 ( 0.00%) paren_sugar: trait_def.paren_sugar, 5 ( 0.00%) has_auto_impl: self.tcx.trait_is_auto(def_id), 1 ( 0.00%) is_marker: trait_def.is_marker, 1 ( 0.00%) skip_array_during_method_dispatch: trait_def.skip_array_during_method_dispatch, 1 ( 0.00%) specialization_kind: trait_def.specialization_kind, . must_implement_one_of: trait_def.must_implement_one_of.clone(), . }; . . EntryKind::Trait(self.lazy(data)) . } . hir::ItemKind::TraitAlias(..) => EntryKind::TraitAlias, . hir::ItemKind::ExternCrate(_) | hir::ItemKind::Use(..) => { . bug!("cannot encode info for item {:?}", item) . } . }; . record!(self.tables.kind[def_id] <- entry_kind); . // FIXME(eddyb) there should be a nicer way to do this. 865 ( 0.00%) match item.kind { . hir::ItemKind::Enum(..) => record!(self.tables.children[def_id] <- 22 ( 0.00%) self.tcx.adt_def(def_id).variants.iter().map(|v| { 96 ( 0.00%) assert!(v.def_id.is_local()); . v.def_id.index . }) . ), . hir::ItemKind::Struct(..) | hir::ItemKind::Union(..) => { . record!(self.tables.children[def_id] <- 36 ( 0.00%) self.tcx.adt_def(def_id).non_enum_variant().fields.iter().map(|f| { 31 ( 0.00%) assert!(f.did.is_local()); . f.did.index . }) . ) . } . hir::ItemKind::Impl { .. } | hir::ItemKind::Trait(..) => { 220 ( 0.00%) let associated_item_def_ids = self.tcx.associated_item_def_ids(def_id); . record!(self.tables.children[def_id] <- . associated_item_def_ids.iter().map(|&def_id| { 131 ( 0.00%) assert!(def_id.is_local()); . def_id.index . }) . ); . } . _ => {} . } 479 ( 0.00%) match item.kind { . hir::ItemKind::Static(..) . | hir::ItemKind::Const(..) . | hir::ItemKind::Fn(..) . | hir::ItemKind::TyAlias(..) . | hir::ItemKind::OpaqueTy(..) . | hir::ItemKind::Enum(..) . | hir::ItemKind::Struct(..) . | hir::ItemKind::Union(..) 688 ( 0.00%) | hir::ItemKind::Impl { .. } => self.encode_item_type(def_id), . _ => {} . } 518 ( 0.00%) if let hir::ItemKind::Fn(..) = item.kind { 128 ( 0.00%) record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id)); . } 378 ( 0.00%) if let hir::ItemKind::Impl { .. } = item.kind { 545 ( 0.00%) if let Some(trait_ref) = self.tcx.impl_trait_ref(def_id) { 515 ( 0.00%) record!(self.tables.impl_trait_ref[def_id] <- trait_ref); . } . } 1,384 ( 0.00%) } . . fn encode_info_for_generic_param(&mut self, def_id: DefId, kind: EntryKind, encode_type: bool) { . record!(self.tables.kind[def_id] <- kind); . if encode_type { . self.encode_item_type(def_id); . } . } . . fn encode_info_for_closure(&mut self, hir_id: hir::HirId) { 132 ( 0.00%) let def_id = self.tcx.hir().local_def_id(hir_id); . debug!("EncodeContext::encode_info_for_closure({:?})", def_id); . . // NOTE(eddyb) `tcx.type_of(def_id)` isn't used because it's fully generic, . // including on the signature, which is inferred in `typeck. 66 ( 0.00%) let ty = self.tcx.typeck(def_id).node_type(hir_id); . 66 ( 0.00%) match ty.kind() { . ty::Generator(..) => { . let data = self.tcx.generator_kind(def_id).unwrap(); . record!(self.tables.kind[def_id.to_def_id()] <- EntryKind::Generator(data)); . } . . ty::Closure(..) => { . record!(self.tables.kind[def_id.to_def_id()] <- EntryKind::Closure); . } . . _ => bug!("closure that is neither generator nor closure"), . } 88 ( 0.00%) self.encode_item_type(def_id.to_def_id()); 88 ( 0.00%) if let ty::Closure(def_id, substs) = *ty.kind() { 198 ( 0.00%) record!(self.tables.fn_sig[def_id] <- substs.as_closure().sig()); . } . } . . fn encode_info_for_anon_const(&mut self, id: hir::HirId) { 14 ( 0.00%) let def_id = self.tcx.hir().local_def_id(id); . debug!("EncodeContext::encode_info_for_anon_const({:?})", def_id); 10 ( 0.00%) let body_id = self.tcx.hir().body_owned_by(id); 8 ( 0.00%) let const_data = self.encode_rendered_const_for_body(body_id); 2 ( 0.00%) let qualifs = self.tcx.mir_const_qualif(def_id); . 8 ( 0.00%) record!(self.tables.kind[def_id.to_def_id()] <- EntryKind::AnonConst(qualifs, const_data)); 8 ( 0.00%) self.encode_item_type(def_id.to_def_id()); . } . . fn encode_native_libraries(&mut self) -> Lazy<[NativeLib]> { 2 ( 0.00%) empty_proc_macro!(self); 2 ( 0.00%) let used_libraries = self.tcx.native_libraries(LOCAL_CRATE); . self.lazy(used_libraries.iter()) . } . . fn encode_foreign_modules(&mut self) -> Lazy<[ForeignModule]> { 5 ( 0.00%) empty_proc_macro!(self); 2 ( 0.00%) let foreign_modules = self.tcx.foreign_modules(LOCAL_CRATE); . self.lazy(foreign_modules.iter().map(|(_, m)| m).cloned()) . } . . fn encode_hygiene(&mut self) -> (SyntaxContextTable, ExpnDataTable, ExpnHashTable) { . let mut syntax_contexts: TableBuilder<_, _> = Default::default(); . let mut expn_data_table: TableBuilder<_, _> = Default::default(); . let mut expn_hash_table: TableBuilder<_, _> = Default::default(); . 2 ( 0.00%) let _: Result<(), !> = self.hygiene_ctxt.encode( 8 ( 0.00%) &mut (&mut *self, &mut syntax_contexts, &mut expn_data_table, &mut expn_hash_table), . |(this, syntax_contexts, _, _), index, ctxt_data| { . syntax_contexts.set(index, this.lazy(ctxt_data)); . Ok(()) . }, . |(this, _, expn_data_table, expn_hash_table), index, expn_data, hash| { . if let Some(index) = index.as_local() { 170 ( 0.00%) expn_data_table.set(index.as_raw(), this.lazy(expn_data)); 170 ( 0.00%) expn_hash_table.set(index.as_raw(), this.lazy(hash)); . } . Ok(()) . }, . ); . . ( . syntax_contexts.encode(&mut self.opaque), . expn_data_table.encode(&mut self.opaque), . expn_hash_table.encode(&mut self.opaque), . ) . } . . fn encode_proc_macros(&mut self) -> Option { 6 ( 0.00%) let is_proc_macro = self.tcx.sess.crate_types().contains(&CrateType::ProcMacro); . if is_proc_macro { . let tcx = self.tcx; . let hir = tcx.hir(); . . let proc_macro_decls_static = tcx.proc_macro_decls_static(()).unwrap().local_def_index; . let stability = tcx.lookup_stability(DefId::local(CRATE_DEF_INDEX)).copied(); . let macros = . self.lazy(tcx.resolutions(()).proc_macros.iter().map(|p| p.local_def_index)); -- line 1666 ---------------------------------------- -- line 1725 ---------------------------------------- . . Some(ProcMacroData { proc_macro_decls_static, stability, macros }) . } else { . None . } . } . . fn encode_crate_deps(&mut self) -> Lazy<[CrateDep]> { 7 ( 0.00%) empty_proc_macro!(self); . 1 ( 0.00%) let deps = self . .tcx . .crates(()) . .iter() . .map(|&cnum| { . let dep = CrateDep { 3 ( 0.00%) name: self.tcx.crate_name(cnum), 3 ( 0.00%) hash: self.tcx.crate_hash(cnum), 3 ( 0.00%) host_hash: self.tcx.crate_host_hash(cnum), 3 ( 0.00%) kind: self.tcx.dep_kind(cnum), 3 ( 0.00%) extra_filename: self.tcx.extra_filename(cnum), . }; 15 ( 0.00%) (cnum, dep) . }) . .collect::>(); . . { . // Sanity-check the crate numbers . let mut expected_cnum = 1; 6 ( 0.00%) for &(n, _) in &deps { 8 ( 0.00%) assert_eq!(n, CrateNum::new(expected_cnum)); . expected_cnum += 1; . } . } . . // We're just going to write a list of crate 'name-hash-version's, with . // the assumption that they are numbered 1 to n. . // FIXME (#2166): This is not nearly enough to support correct versioning . // but is enough to get transitive crate dependencies working. . self.lazy(deps.iter().map(|&(_, ref dep)| dep)) . } . . fn encode_lib_features(&mut self) -> Lazy<[(Symbol, Option)]> { 2 ( 0.00%) empty_proc_macro!(self); 1 ( 0.00%) let tcx = self.tcx; . let lib_features = tcx.lib_features(()); 2 ( 0.00%) self.lazy(lib_features.to_vec()) . } . . fn encode_diagnostic_items(&mut self) -> Lazy<[(Symbol, DefIndex)]> { 3 ( 0.00%) empty_proc_macro!(self); 1 ( 0.00%) let tcx = self.tcx; . let diagnostic_items = &tcx.diagnostic_items(LOCAL_CRATE).name_to_id; . self.lazy(diagnostic_items.iter().map(|(&name, def_id)| (name, def_id.index))) . } . . fn encode_lang_items(&mut self) -> Lazy<[(DefIndex, usize)]> { 4 ( 0.00%) empty_proc_macro!(self); 1 ( 0.00%) let tcx = self.tcx; 1 ( 0.00%) let lang_items = tcx.lang_items(); 2 ( 0.00%) let lang_items = lang_items.items().iter(); . self.lazy(lang_items.enumerate().filter_map(|(i, &opt_def_id)| { 568 ( 0.00%) if let Some(def_id) = opt_def_id { . if def_id.is_local() { . return Some((def_id.index, i)); . } . } . None . })) . } . . fn encode_lang_items_missing(&mut self) -> Lazy<[lang_items::LangItem]> { 2 ( 0.00%) empty_proc_macro!(self); 1 ( 0.00%) let tcx = self.tcx; 1 ( 0.00%) self.lazy(&tcx.lang_items().missing) . } . . fn encode_traits(&mut self) -> Lazy<[DefIndex]> { 3 ( 0.00%) empty_proc_macro!(self); 1 ( 0.00%) self.lazy(self.tcx.traits_in_crate(LOCAL_CRATE).iter().map(|def_id| def_id.index)) . } . . /// Encodes an index, mapping each trait to its (local) implementations. . fn encode_impls(&mut self) -> Lazy<[TraitImpls]> { . debug!("EncodeContext::encode_traits_and_impls()"); 2 ( 0.00%) empty_proc_macro!(self); 2 ( 0.00%) let tcx = self.tcx; 5 ( 0.00%) let mut visitor = ImplsVisitor { tcx, impls: FxHashMap::default() }; 4 ( 0.00%) tcx.hir().visit_all_item_likes(&mut visitor); . . let mut all_impls: Vec<_> = visitor.impls.into_iter().collect(); . . // Bring everything into deterministic order for hashing 10 ( 0.00%) all_impls.sort_by_cached_key(|&(trait_def_id, _)| tcx.def_path_hash(trait_def_id)); . . let all_impls: Vec<_> = all_impls . .into_iter() 150 ( 0.00%) .map(|(trait_def_id, mut impls)| { . // Bring everything into deterministic order for hashing 9 ( 0.00%) impls.sort_by_cached_key(|&(index, _)| { 102 ( 0.00%) tcx.hir().def_path_hash(LocalDefId { local_def_index: index }) . }); . 40 ( 0.00%) TraitImpls { . trait_id: (trait_def_id.krate.as_u32(), trait_def_id.index), 30 ( 0.00%) impls: self.lazy(&impls), . } 80 ( 0.00%) }) . .collect(); . . self.lazy(&all_impls) . } . . // Encodes all symbols exported from this crate into the metadata. . // . // This pass is seeded off the reachability list calculated in the . // middle::reachable module but filters out items that either don't have a . // symbol associated with them (they weren't translated) or if they're an FFI . // definition (as that's not defined in this crate). . fn encode_exported_symbols( . &mut self, . exported_symbols: &[(ExportedSymbol<'tcx>, SymbolExportLevel)], . ) -> Lazy<[(ExportedSymbol<'tcx>, SymbolExportLevel)]> { 2 ( 0.00%) empty_proc_macro!(self); . // The metadata symbol name is special. It should not show up in . // downstream crates. 9 ( 0.00%) let metadata_symbol_name = SymbolName::new(self.tcx, &metadata_symbol_name(self.tcx)); . . self.lazy( . exported_symbols . .iter() . .filter(|&&(ref exported_symbol, _)| match *exported_symbol { . ExportedSymbol::NoDefId(symbol_name) => symbol_name != metadata_symbol_name, . _ => true, . }) . .cloned(), . ) . } . . fn encode_dylib_dependency_formats(&mut self) -> Lazy<[Option]> { 2 ( 0.00%) empty_proc_macro!(self); 2 ( 0.00%) let formats = self.tcx.dependency_formats(()); 4 ( 0.00%) for (ty, arr) in formats.iter() { 2 ( 0.00%) if *ty != CrateType::Dylib { . continue; . } . return self.lazy(arr.iter().map(|slot| match *slot { . Linkage::NotLinked | Linkage::IncludedFromDylib => None, . . Linkage::Dynamic => Some(LinkagePreference::RequireDynamic), . Linkage::Static => Some(LinkagePreference::RequireStatic), . })); -- line 1876 ---------------------------------------- -- line 1914 ---------------------------------------- . } . } . . // FIXME(eddyb) make metadata encoding walk over all definitions, instead of HIR. . impl<'a, 'tcx> Visitor<'tcx> for EncodeContext<'a, 'tcx> { . type NestedFilter = nested_filter::OnlyBodies; . . fn nested_visit_map(&mut self) -> Self::Map { 176 ( 0.00%) self.tcx.hir() . } 236,493 ( 0.01%) fn visit_expr(&mut self, ex: &'tcx hir::Expr<'tcx>) { 26,277 ( 0.00%) intravisit::walk_expr(self, ex); . self.encode_info_for_expr(ex); 210,216 ( 0.01%) } 18 ( 0.00%) fn visit_anon_const(&mut self, c: &'tcx AnonConst) { . intravisit::walk_anon_const(self, c); 4 ( 0.00%) self.encode_info_for_anon_const(c.hir_id); 16 ( 0.00%) } . fn visit_item(&mut self, item: &'tcx hir::Item<'tcx>) { 888 ( 0.00%) intravisit::walk_item(self, item); 592 ( 0.00%) match item.kind { . hir::ItemKind::ExternCrate(_) | hir::ItemKind::Use(..) => {} // ignore these 740 ( 0.00%) _ => self.encode_info_for_item(item.def_id.to_def_id(), item), . } 1,184 ( 0.00%) self.encode_addl_info_for_item(item); . } . fn visit_foreign_item(&mut self, ni: &'tcx hir::ForeignItem<'tcx>) { . intravisit::walk_foreign_item(self, ni); . self.encode_info_for_foreign_item(ni.def_id.to_def_id(), ni); . } 2,664 ( 0.00%) fn visit_generics(&mut self, generics: &'tcx hir::Generics<'tcx>) { . intravisit::walk_generics(self, generics); . self.encode_info_for_generics(generics); 2,368 ( 0.00%) } . } . . impl<'a, 'tcx> EncodeContext<'a, 'tcx> { 161 ( 0.00%) fn encode_fields(&mut self, adt_def: &ty::AdtDef) { . for (variant_index, variant) in adt_def.variants.iter_enumerated() { . for (field_index, _field) in variant.fields.iter().enumerate() { . self.encode_field(adt_def, variant_index, field_index); . } . } 184 ( 0.00%) } . . fn encode_info_for_generics(&mut self, generics: &hir::Generics<'tcx>) { . for param in generics.params { 348 ( 0.00%) let def_id = self.tcx.hir().local_def_id(param.hir_id); 406 ( 0.00%) match param.kind { . GenericParamKind::Lifetime { .. } => continue, . GenericParamKind::Type { default, .. } => { . self.encode_info_for_generic_param( . def_id.to_def_id(), . EntryKind::TypeParam, . default.is_some(), . ); . } -- line 1970 ---------------------------------------- -- line 1975 ---------------------------------------- . record!(self.tables.const_defaults[def_id] <- self.tcx.const_param_default(def_id)) . } . } . } . } . } . . fn encode_info_for_expr(&mut self, expr: &hir::Expr<'_>) { 52,554 ( 0.00%) if let hir::ExprKind::Closure(..) = expr.kind { . self.encode_info_for_closure(expr.hir_id); . } . } . . fn encode_ident_span(&mut self, def_id: DefId, ident: Ident) { . record!(self.tables.ident_span[def_id] <- ident.span); . } . . /// In some cases, along with the item itself, we also . /// encode some sub-items. Usually we want some info from the item . /// so it's easier to do that here then to wait until we would encounter . /// normally in the visitor walk. 2,664 ( 0.00%) fn encode_addl_info_for_item(&mut self, item: &hir::Item<'_>) { 1,480 ( 0.00%) match item.kind { . hir::ItemKind::Static(..) . | hir::ItemKind::Const(..) . | hir::ItemKind::Fn(..) . | hir::ItemKind::Macro(..) . | hir::ItemKind::Mod(..) . | hir::ItemKind::ForeignMod { .. } . | hir::ItemKind::GlobalAsm(..) . | hir::ItemKind::ExternCrate(..) . | hir::ItemKind::Use(..) . | hir::ItemKind::TyAlias(..) . | hir::ItemKind::OpaqueTy(..) . | hir::ItemKind::TraitAlias(..) => { . // no sub-item recording needed in these cases . } . hir::ItemKind::Enum(..) => { 11 ( 0.00%) let def = self.tcx.adt_def(item.def_id.to_def_id()); 22 ( 0.00%) self.encode_fields(def); . . for (i, variant) in def.variants.iter_enumerated() { . self.encode_enum_variant_info(def, i); . 288 ( 0.00%) if let Some(_ctor_def_id) = variant.ctor_def_id { . self.encode_enum_variant_ctor(def, i); . } . } . } . hir::ItemKind::Struct(ref struct_def, _) => { 12 ( 0.00%) let def = self.tcx.adt_def(item.def_id.to_def_id()); 24 ( 0.00%) self.encode_fields(def); . . // If the struct has a constructor, encode it. 48 ( 0.00%) if let Some(ctor_hir_id) = struct_def.ctor_hir_id() { 6 ( 0.00%) let ctor_def_id = self.tcx.hir().local_def_id(ctor_hir_id); . self.encode_struct_ctor(def, ctor_def_id.to_def_id()); . } . } . hir::ItemKind::Union(..) => { . let def = self.tcx.adt_def(item.def_id.to_def_id()); . self.encode_fields(def); . } . hir::ItemKind::Impl { .. } => { 488 ( 0.00%) for &trait_item_def_id in 109 ( 0.00%) self.tcx.associated_item_def_ids(item.def_id.to_def_id()).iter() . { . self.encode_info_for_impl_item(trait_item_def_id); . } . } . hir::ItemKind::Trait(..) => { 28 ( 0.00%) for &item_def_id in self.tcx.associated_item_def_ids(item.def_id.to_def_id()).iter() . { . self.encode_info_for_trait_item(item_def_id); . } . } . } 2,368 ( 0.00%) } . } . . struct ImplsVisitor<'tcx> { . tcx: TyCtxt<'tcx>, . impls: FxHashMap)>>, . } . . impl<'tcx, 'v> ItemLikeVisitor<'v> for ImplsVisitor<'tcx> { 2,072 ( 0.00%) fn visit_item(&mut self, item: &hir::Item<'_>) { 592 ( 0.00%) match item.kind { . hir::ItemKind::Impl(..) => { 424 ( 0.00%) if let Some(trait_ref) = self.tcx.impl_trait_ref(item.def_id.to_def_id()) { 618 ( 0.00%) let simplified_self_ty = fast_reject::simplify_type( . self.tcx, . trait_ref.self_ty(), . SimplifyParams::No, . StripReferences::No, . ); . . self.impls . .entry(trait_ref.def_id) . .or_default() . .push((item.def_id.local_def_index, simplified_self_ty)); . } . } . _ => {} . } 2,368 ( 0.00%) } . . fn visit_trait_item(&mut self, _trait_item: &'v hir::TraitItem<'v>) {} . . fn visit_impl_item(&mut self, _impl_item: &'v hir::ImplItem<'v>) { . // handled in `visit_item` above . } . . fn visit_foreign_item(&mut self, _foreign_item: &'v hir::ForeignItem<'v>) {} -- line 2088 ---------------------------------------- -- line 2146 ---------------------------------------- . } . . #[inline] . pub fn raw_data(&self) -> &[u8] { . &self.raw_data . } . } . 10 ( 0.00%) pub fn encode_metadata(tcx: TyCtxt<'_>) -> EncodedMetadata { 5 ( 0.00%) let _prof_timer = tcx.prof.verbose_generic_activity("generate_crate_metadata"); . . // Since encoding metadata is not in a query, and nothing is cached, . // there's no need to do dep-graph tracking for any of it. . tcx.dep_graph.assert_ignored(); . 7 ( 0.00%) join( 3 ( 0.00%) || encode_metadata_impl(tcx), . || { 5 ( 0.00%) if tcx.sess.threads() == 1 { . return; . } . // Prefetch some queries used by metadata encoding. . // This is not necessary for correctness, but is only done for performance reasons. . // It can be removed if it turns out to cause trouble or be detrimental to performance. . join(|| prefetch_mir(tcx), || tcx.exported_symbols(LOCAL_CRATE)); . }, . ) . .0 9 ( 0.00%) } . 9 ( 0.00%) fn encode_metadata_impl(tcx: TyCtxt<'_>) -> EncodedMetadata { 1 ( 0.00%) let mut encoder = opaque::Encoder::new(vec![]); . encoder.emit_raw_bytes(METADATA_HEADER).unwrap(); . . // Will be filled with the root position after encoding everything. . encoder.emit_raw_bytes(&[0, 0, 0, 0]).unwrap(); . 2 ( 0.00%) let source_map_files = tcx.sess.source_map().files(); 3 ( 0.00%) let source_file_cache = (source_map_files[0].clone(), 0); 2 ( 0.00%) let required_source_files = Some(GrowableBitSet::with_capacity(source_map_files.len())); . drop(source_map_files); . . let hygiene_ctxt = HygieneEncodeContext::default(); . 35 ( 0.00%) let mut ecx = EncodeContext { 4 ( 0.00%) opaque: encoder, . tcx, 2 ( 0.00%) feat: tcx.features(), . tables: Default::default(), . lazy_state: LazyState::NoNode, . type_shorthands: Default::default(), . predicate_shorthands: Default::default(), 4 ( 0.00%) source_file_cache, . interpret_allocs: Default::default(), 4 ( 0.00%) required_source_files, 2 ( 0.00%) is_proc_macro: tcx.sess.crate_types().contains(&CrateType::ProcMacro), . hygiene_ctxt: &hygiene_ctxt, . }; . . // Encode the rustc version string in a predictable location. . rustc_version().encode(&mut ecx).unwrap(); . . // Encode all the entries and extra information in the crate, . // culminating in the `CrateRoot` which points to all of it. 1 ( 0.00%) let root = ecx.encode_crate_root(); . 7 ( 0.00%) let mut result = ecx.opaque.into_inner(); . . // Encode the root position. . let header = METADATA_HEADER.len(); . let pos = root.position.get(); 3 ( 0.00%) result[header + 0] = (pos >> 24) as u8; 3 ( 0.00%) result[header + 1] = (pos >> 16) as u8; 1 ( 0.00%) result[header + 2] = (pos >> 8) as u8; 5 ( 0.00%) result[header + 3] = (pos >> 0) as u8; . . // Record metadata size for self-profiling . tcx.prof.artifact_size("crate_metadata", "crate_metadata", result.len() as u64); . 5 ( 0.00%) EncodedMetadata { raw_data: result } 12 ( 0.00%) } . . pub fn provide(providers: &mut Providers) { 2 ( 0.00%) *providers = Providers { . traits_in_crate: |tcx, cnum| { 1 ( 0.00%) assert_eq!(cnum, LOCAL_CRATE); . 1 ( 0.00%) #[derive(Default)] . struct TraitsVisitor { . traits: Vec, . } . impl ItemLikeVisitor<'_> for TraitsVisitor { . fn visit_item(&mut self, item: &hir::Item<'_>) { 1,184 ( 0.00%) if let hir::ItemKind::Trait(..) | hir::ItemKind::TraitAlias(..) = item.kind { 1 ( 0.00%) self.traits.push(item.def_id.to_def_id()); . } . } . fn visit_trait_item(&mut self, _trait_item: &hir::TraitItem<'_>) {} . fn visit_impl_item(&mut self, _impl_item: &hir::ImplItem<'_>) {} . fn visit_foreign_item(&mut self, _foreign_item: &hir::ForeignItem<'_>) {} . } . . let mut visitor = TraitsVisitor::default(); 4 ( 0.00%) tcx.hir().visit_all_item_likes(&mut visitor); . // Bring everything into deterministic order. . visitor.traits.sort_by_cached_key(|&def_id| tcx.def_path_hash(def_id)); . tcx.arena.alloc_slice(&visitor.traits) . }, . . ..*providers . }; . } -- line 2257 ---------------------------------------- 150,012 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_const_eval/src/interpret/visitor.rs -------------------------------------------------------------------------------- Ir -- line 47 ---------------------------------------- . self.layout . } . . #[inline(always)] . fn to_op( . &self, . _ecx: &InterpCx<'mir, 'tcx, M>, . ) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>> { 9,670 ( 0.00%) Ok(*self) . } . . #[inline(always)] . fn from_mem_place(mplace: MPlaceTy<'tcx, M::PointerTag>) -> Self { 101,934 ( 0.01%) mplace.into() . } . . #[inline(always)] . fn project_downcast( . &self, . ecx: &InterpCx<'mir, 'tcx, M>, . variant: VariantIdx, . ) -> InterpResult<'tcx, Self> { 29,010 ( 0.00%) ecx.operand_downcast(self, variant) . } . . #[inline(always)] . fn project_field( . &self, . ecx: &InterpCx<'mir, 'tcx, M>, . field: usize, . ) -> InterpResult<'tcx, Self> { 125,952 ( 0.01%) ecx.operand_field(self, field) . } . } . . impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> Value<'mir, 'tcx, M> . for MPlaceTy<'tcx, M::PointerTag> . { . #[inline(always)] . fn layout(&self) -> TyAndLayout<'tcx> { -- line 86 ---------------------------------------- -- line 87 ---------------------------------------- . self.layout . } . . #[inline(always)] . fn to_op( . &self, . _ecx: &InterpCx<'mir, 'tcx, M>, . ) -> InterpResult<'tcx, OpTy<'tcx, M::PointerTag>> { 43,554 ( 0.00%) Ok((*self).into()) . } . . #[inline(always)] . fn from_mem_place(mplace: MPlaceTy<'tcx, M::PointerTag>) -> Self { . mplace . } . . #[inline(always)] -- line 103 ---------------------------------------- -- line 130 ---------------------------------------- . -> &$($mutability)? InterpCx<'mir, 'tcx, M>; . . /// `read_discriminant` can be hooked for better error messages. . #[inline(always)] . fn read_discriminant( . &mut self, . op: &OpTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, VariantIdx> { 4,837 ( 0.00%) Ok(self.ecx().read_discriminant(op)?.1) . } . . // Recursive actions, ready to be overloaded. . /// Visits the given value, dispatching as appropriate to more specialized visitors. . #[inline(always)] . fn visit_value(&mut self, v: &Self::V) -> InterpResult<'tcx> . { . self.walk_value(v) -- line 146 ---------------------------------------- -- line 170 ---------------------------------------- . /// we are descending through. . #[inline(always)] . fn visit_field( . &mut self, . _old_val: &Self::V, . _field: usize, . new_val: &Self::V, . ) -> InterpResult<'tcx> { 58,987 ( 0.00%) self.visit_value(new_val) . } . /// Called when recursing into an enum variant. . /// This gives the visitor the chance to track the stack of nested fields that . /// we are descending through. . #[inline(always)] . fn visit_variant( . &mut self, . _old_val: &Self::V, . _variant: VariantIdx, . new_val: &Self::V, . ) -> InterpResult<'tcx> { . self.visit_value(new_val) . } . . // Default recursors. Not meant to be overloaded. 122,745 ( 0.01%) fn walk_aggregate( . &mut self, . v: &Self::V, . fields: impl Iterator>, . ) -> InterpResult<'tcx> { . // Now iterate over it. 241,485 ( 0.01%) for (idx, field_val) in fields.enumerate() { 923,329 ( 0.05%) self.visit_field(v, idx, &field_val?)?; . } . Ok(()) 138,089 ( 0.01%) } 276,093 ( 0.02%) fn walk_value(&mut self, v: &Self::V) -> InterpResult<'tcx> . { . trace!("walk_value: type: {}", v.layout().ty); . . // Special treatment for special types, where the (static) layout is not sufficient. 217,226 ( 0.01%) match *v.layout().ty.kind() { . // If it is a trait object, switch to the real type that was used to create it. . ty::Dynamic(..) => { . // immediate trait objects are not a thing . let op = v.to_op(self.ecx())?; . let dest = op.assert_mem_place(); . let inner = self.ecx().unpack_dyn_trait(&dest)?.1; . trace!("walk_value: dyn object layout: {:#?}", inner.layout); . // recurse with the inner type -- line 218 ---------------------------------------- -- line 220 ---------------------------------------- . }, . // Slices do not need special handling here: they have `Array` field . // placement with length 0, so we enter the `Array` case below which . // indirectly uses the metadata to determine the actual length. . _ => {}, . }; . . // Visit the fields of this value. 278,591 ( 0.02%) match v.layout().fields { . FieldsShape::Primitive => {}, . FieldsShape::Union(fields) => { . self.visit_union(v, fields)?; . }, . FieldsShape::Arbitrary { ref offsets, .. } => { . // FIXME: We collect in a vec because otherwise there are lifetime . // errors: Projecting to a field needs access to `ecx`. . let fields: Vec> = 46,001 ( 0.00%) (0..offsets.len()).map(|i| { 62,980 ( 0.00%) v.project_field(self.ecx(), i) . }) . .collect(); . self.visit_aggregate(v, fields.into_iter())?; . }, . FieldsShape::Array { .. } => { . // Let's get an mplace first. 78 ( 0.00%) let op = v.to_op(self.ecx())?; . let mplace = op.assert_mem_place(); . // Now we can go over all the fields. . // This uses the *run-time length*, i.e., if we are a slice, . // the dynamic info from the metadata is used. 66 ( 0.00%) let iter = self.ecx().mplace_array_fields(&mplace)? . .map(|f| f.and_then(|f| { . Ok(Value::from_mem_place(f)) . })); . self.visit_aggregate(v, iter)?; . } . } . 186,549 ( 0.01%) match v.layout().variants { . // If this is a multi-variant layout, find the right variant and proceed . // with *its* fields. . Variants::Multiple { .. } => { 120,877 ( 0.01%) let op = v.to_op(self.ecx())?; 14,511 ( 0.00%) let idx = self.read_discriminant(&op)?; 38,684 ( 0.00%) let inner = v.project_downcast(self.ecx(), idx)?; . trace!("walk_value: variant layout: {:#?}", inner.layout()); . // recurse with the inner type . self.visit_variant(v, idx, &inner) . } . // For single-variant layouts, we already did anything there is to do. . Variants::Single { .. } => Ok(()) . } 276,093 ( 0.02%) } . } . } . } . . make_value_visitor!(ValueVisitor,); . make_value_visitor!(MutValueVisitor, mut); 111,394 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_typeck/src/check/regionck.rs -------------------------------------------------------------------------------- Ir -- line 125 ---------------------------------------- . /// fn foo<'a, 'b, T>(x: &'a &'b [T]) { } . /// ``` . /// . /// we can assume in the caller's body that `'b: 'a` and that `T: . /// 'b` (and hence, transitively, that `T: 'a`). This method would . /// add those assumptions into the outlives-environment. . /// . /// Tests: `src/test/ui/regions/regions-free-region-ordering-*.rs` 8,556 ( 0.00%) fn add_implied_bounds<'a>( . &mut self, . infcx: &InferCtxt<'a, 'tcx>, . fn_sig_tys: FxHashSet>, . body_id: hir::HirId, . span: Span, . ) { . debug!("add_implied_bounds()"); . 15,175 ( 0.00%) for ty in fn_sig_tys { . let ty = infcx.resolve_vars_if_possible(ty); . debug!("add_implied_bounds: ty = {}", ty); 13,743 ( 0.00%) let implied_bounds = infcx.implied_outlives_bounds(self.param_env, body_id, ty, span); . self.add_outlives_bounds(Some(infcx), implied_bounds) . } 5,704 ( 0.00%) } . } . . /////////////////////////////////////////////////////////////////////////// . // PUBLIC ENTRY POINTS . . impl<'a, 'tcx> FnCtxt<'a, 'tcx> { 90 ( 0.00%) pub fn regionck_expr(&self, body: &'tcx hir::Body<'tcx>) { 70 ( 0.00%) let subject = self.tcx.hir().body_owner_def_id(body.id()); 20 ( 0.00%) let id = body.value.hir_id; 70 ( 0.00%) let mut rcx = RegionCtxt::new(self, id, Subject(subject), self.param_env); . . // There are no add'l implied bounds when checking a . // standalone expr (e.g., the `E` in a type like `[u32; E]`). 50 ( 0.00%) rcx.outlives_environment.save_implied_bounds(id); . 10 ( 0.00%) if !self.errors_reported_since_creation() { . // regionck assumes typeck succeeded . rcx.visit_body(body); . rcx.visit_region_obligations(id); . } 20 ( 0.00%) rcx.resolve_regions_and_report_errors(RegionckMode::for_item_body(self.tcx)); 90 ( 0.00%) } . . /// Region checking during the WF phase for items. `wf_tys` are the . /// types from which we should derive implied bounds, if any. 4,836 ( 0.00%) pub fn regionck_item(&self, item_id: hir::HirId, span: Span, wf_tys: FxHashSet>) { . debug!("regionck_item(item.id={:?}, wf_tys={:?})", item_id, wf_tys); 1,612 ( 0.00%) let subject = self.tcx.hir().local_def_id(item_id); 2,821 ( 0.00%) let mut rcx = RegionCtxt::new(self, item_id, Subject(subject), self.param_env); 4,433 ( 0.00%) rcx.outlives_environment.add_implied_bounds(self, wf_tys, item_id, span); 1,612 ( 0.00%) rcx.outlives_environment.save_implied_bounds(item_id); . rcx.visit_region_obligations(item_id); . rcx.resolve_regions_and_report_errors(RegionckMode::default()); 3,627 ( 0.00%) } . . /// Region check a function body. Not invoked on closures, but . /// only on the "root" fn item (in which closures may be . /// embedded). Walks the function body and adds various add'l . /// constraints that are needed for region inference. This is . /// separated both to isolate "pure" region constraints from the . /// rest of type check and because sometimes we need type . /// inference to have completed before we can determine which . /// constraints to add. 1,872 ( 0.00%) pub(crate) fn regionck_fn( . &self, . fn_id: hir::HirId, . body: &'tcx hir::Body<'tcx>, . span: Span, . wf_tys: FxHashSet>, . ) { . debug!("regionck_fn(id={})", fn_id); 864 ( 0.00%) let subject = self.tcx.hir().body_owner_def_id(body.id()); 288 ( 0.00%) let hir_id = body.value.hir_id; 720 ( 0.00%) let mut rcx = RegionCtxt::new(self, hir_id, Subject(subject), self.param_env); . // We need to add the implied bounds from the function signature 1,728 ( 0.00%) rcx.outlives_environment.add_implied_bounds(self, wf_tys, fn_id, span); 576 ( 0.00%) rcx.outlives_environment.save_implied_bounds(fn_id); . 144 ( 0.00%) if !self.errors_reported_since_creation() { . // regionck assumes typeck succeeded 1,584 ( 0.00%) rcx.visit_fn_body(fn_id, body, self.tcx.hir().span(fn_id)); . } . 288 ( 0.00%) rcx.resolve_regions_and_report_errors(RegionckMode::for_item_body(self.tcx)); 1,296 ( 0.00%) } . } . . /////////////////////////////////////////////////////////////////////////// . // INTERNALS . . pub struct RegionCtxt<'a, 'tcx> { . pub fcx: &'a FnCtxt<'a, 'tcx>, . -- line 221 ---------------------------------------- -- line 229 ---------------------------------------- . . // id of AST node being analyzed (the subject of the analysis). . subject_def_id: LocalDefId, . } . . impl<'a, 'tcx> Deref for RegionCtxt<'a, 'tcx> { . type Target = FnCtxt<'a, 'tcx>; . fn deref(&self) -> &Self::Target { 86,227 ( 0.01%) self.fcx . } . } . . pub struct Subject(LocalDefId); . . impl<'a, 'tcx> RegionCtxt<'a, 'tcx> { 6,127 ( 0.00%) pub fn new( . fcx: &'a FnCtxt<'a, 'tcx>, . initial_body_id: hir::HirId, . Subject(subject): Subject, . param_env: ty::ParamEnv<'tcx>, . ) -> RegionCtxt<'a, 'tcx> { 557 ( 0.00%) let region_scope_tree = fcx.tcx.region_scope_tree(subject); 1,114 ( 0.00%) let outlives_environment = OutlivesEnvironment::new(param_env); 3,899 ( 0.00%) RegionCtxt { . fcx, . region_scope_tree, . body_id: initial_body_id, . body_owner: subject, . subject_def_id: subject, 2,228 ( 0.00%) outlives_environment, . } 5,013 ( 0.00%) } . . /// Try to resolve the type for the given node, returning `t_err` if an error results. Note that . /// we never care about the details of the error, the same error will be detected and reported . /// in the writeback phase. . /// . /// Note one important point: we do not attempt to resolve *region variables* here. This is . /// because regionck is essentially adding constraints to those region variables and so may yet . /// influence how they are resolved. -- line 268 ---------------------------------------- -- line 283 ---------------------------------------- . /// of b will be `&.i32` and then `*b` will require that `` be bigger than the let and . /// the `*b` expression, so we will effectively resolve `` to be the block B. . pub fn resolve_type(&self, unresolved_ty: Ty<'tcx>) -> Ty<'tcx> { . self.resolve_vars_if_possible(unresolved_ty) . } . . /// Try to resolve the type for the given node. . fn resolve_node_type(&self, id: hir::HirId) -> Ty<'tcx> { 552 ( 0.00%) let t = self.node_ty(id); 428 ( 0.00%) self.resolve_type(t) . } . . /// This is the "main" function when region-checking a function item or a . /// closure within a function item. It begins by updating various fields . /// (e.g., `outlives_environment`) to be appropriate to the function and . /// then adds constraints derived from the function body. . /// . /// Note that it does **not** restore the state of the fields that . /// it updates! This is intentional, since -- for the main . /// function -- we wish to be able to read the final . /// `outlives_environment` and other fields from the caller. For . /// closures, however, we save and restore any "scoped state" . /// before we invoke this function. (See `visit_fn` in the . /// `intravisit::Visitor` impl below.) 2,324 ( 0.00%) fn visit_fn_body( . &mut self, . id: hir::HirId, // the id of the fn itself . body: &'tcx hir::Body<'tcx>, . span: Span, . ) { . // When we enter a function, we can derive . debug!("visit_fn_body(id={:?})", id); . 664 ( 0.00%) let body_id = body.id(); 332 ( 0.00%) self.body_id = body_id.hir_id; 1,162 ( 0.00%) self.body_owner = self.tcx.hir().body_owner_def_id(body_id); . . let fn_sig = { 1,660 ( 0.00%) match self.typeck_results.borrow().liberated_fn_sigs().get(id) { 332 ( 0.00%) Some(f) => *f, . None => { . bug!("No fn-sig entry for id={:?}", id); . } . } . }; . . // Collect the types from which we create inferred bounds. . // For the return type, if diverging, substitute `bool` just . // because it will have no effect. . // . // FIXME(#27579) return types should not be implied bounds . let fn_sig_tys: FxHashSet<_> = 830 ( 0.00%) fn_sig.inputs().iter().cloned().chain(Some(fn_sig.output())).collect(); . 2,158 ( 0.00%) self.outlives_environment.add_implied_bounds(self.fcx, fn_sig_tys, body_id.hir_id, span); 830 ( 0.00%) self.outlives_environment.save_implied_bounds(body_id.hir_id); 332 ( 0.00%) self.link_fn_params(body.params); . self.visit_body(body); . self.visit_region_obligations(body_id.hir_id); 1,328 ( 0.00%) } . . fn visit_inline_const(&mut self, id: hir::HirId, body: &'tcx hir::Body<'tcx>) { . debug!("visit_inline_const(id={:?})", id); . . // Save state of current function. We will restore afterwards. . let old_body_id = self.body_id; . let old_body_owner = self.body_owner; . let env_snapshot = self.outlives_environment.push_snapshot_pre_typeck_child(); -- line 350 ---------------------------------------- -- line 365 ---------------------------------------- . } . . fn visit_region_obligations(&mut self, hir_id: hir::HirId) { . debug!("visit_region_obligations: hir_id={:?}", hir_id); . . // region checking can introduce new pending obligations . // which, when processed, might generate new region . // obligations. So make sure we process those. 579 ( 0.00%) self.select_all_obligations_or_error(); . } . . fn resolve_regions_and_report_errors(&self, mode: RegionckMode) { 1,671 ( 0.00%) self.infcx.process_registered_region_obligations( 1,114 ( 0.00%) self.outlives_environment.region_bound_pairs_map(), 1,114 ( 0.00%) Some(self.tcx.lifetimes.re_root_empty), 557 ( 0.00%) self.param_env, . ); . 2,785 ( 0.00%) self.fcx.resolve_regions_and_report_errors( 557 ( 0.00%) self.subject_def_id.to_def_id(), . &self.outlives_environment, . mode, . ); . } . . fn constrain_bindings_in_pat(&mut self, pat: &hir::Pat<'_>) { . debug!("regionck::visit_pat(pat={:?})", pat); . pat.each_binding(|_, hir_id, span, _| { 204 ( 0.00%) let typ = self.resolve_node_type(hir_id); 408 ( 0.00%) let body_id = self.body_id; 816 ( 0.00%) dropck::check_drop_obligations(self, typ, span, body_id); . }) . } . } . . impl<'a, 'tcx> Visitor<'tcx> for RegionCtxt<'a, 'tcx> { . // (..) FIXME(#3238) should use visit_pat, not visit_arm/visit_local, . // However, right now we run into an issue whereby some free . // regions are not properly related if they appear within the -- line 403 ---------------------------------------- -- line 416 ---------------------------------------- . ) { . assert!( . matches!(fk, intravisit::FnKind::Closure), . "visit_fn invoked for something other than a closure" . ); . . // Save state of current function before invoking . // `visit_fn_body`. We will restore afterwards. 44 ( 0.00%) let old_body_id = self.body_id; 44 ( 0.00%) let old_body_owner = self.body_owner; 88 ( 0.00%) let env_snapshot = self.outlives_environment.push_snapshot_pre_typeck_child(); . 132 ( 0.00%) let body = self.tcx.hir().body(body_id); 132 ( 0.00%) self.visit_fn_body(hir_id, body, span); . . // Restore state from previous function. 88 ( 0.00%) self.outlives_environment.pop_snapshot_post_typeck_child(env_snapshot); 44 ( 0.00%) self.body_id = old_body_id; 44 ( 0.00%) self.body_owner = old_body_owner; . } . . //visit_pat: visit_pat, // (..) see above . . fn visit_arm(&mut self, arm: &'tcx hir::Arm<'tcx>) { . // see above 2,429 ( 0.00%) self.constrain_bindings_in_pat(arm.pat); . intravisit::walk_arm(self, arm); . } . 984 ( 0.00%) fn visit_local(&mut self, l: &'tcx hir::Local<'tcx>) { . // see above 861 ( 0.00%) self.constrain_bindings_in_pat(l.pat); . self.link_local(l); . intravisit::walk_local(self, l); 861 ( 0.00%) } . 210,216 ( 0.01%) fn visit_expr(&mut self, expr: &'tcx hir::Expr<'tcx>) { . // Check any autoderefs or autorefs that appear. . let cmt_result = self.constrain_adjustments(expr); . . // If necessary, constrain destructors in this expression. This will be . // the adjusted form if there is an adjustment. 53,683 ( 0.00%) match cmt_result { 236,493 ( 0.01%) Ok(head_cmt) => { . self.check_safety_of_rvalue_destructor_if_necessary(&head_cmt, expr.span); . } . Err(..) => { . self.tcx.sess.delay_span_bug(expr.span, "cat_expr Errd"); . } . } . 184,075 ( 0.01%) match expr.kind { . hir::ExprKind::AddrOf(hir::BorrowKind::Ref, m, ref base) => { . self.link_addr_of(expr, m, base); . . intravisit::walk_expr(self, expr); . } . . hir::ExprKind::Match(ref discr, arms, _) => { . self.link_match(discr, arms); -- line 475 ---------------------------------------- -- line 479 ---------------------------------------- . . hir::ExprKind::ConstBlock(anon_const) => { . let body = self.tcx.hir().body(anon_const.body); . self.visit_inline_const(anon_const.hir_id, body); . } . . _ => intravisit::walk_expr(self, expr), . } 210,216 ( 0.01%) } . } . . impl<'a, 'tcx> RegionCtxt<'a, 'tcx> { . /// Creates a temporary `MemCategorizationContext` and pass it to the closure. . fn with_mc(&self, f: F) -> R . where . F: for<'b> FnOnce(mc::MemCategorizationContext<'b, 'tcx>) -> R, . { 306,328 ( 0.02%) f(mc::MemCategorizationContext::new( . &self.infcx, . self.outlives_environment.param_env, . self.body_owner, 29,165 ( 0.00%) &self.typeck_results.borrow(), . )) . } . . /// Invoked on any adjustments that occur. Checks that if this is a region pointer being . /// dereferenced, the lifetime of the pointer includes the deref expr. . fn constrain_adjustments( . &mut self, . expr: &hir::Expr<'_>, . ) -> mc::McResult> { . debug!("constrain_adjustments(expr={:?})", expr); . 52,554 ( 0.00%) let mut place = self.with_mc(|mc| mc.cat_expr_unadjusted(expr))?; . 26,277 ( 0.00%) let typeck_results = self.typeck_results.borrow(); 26,277 ( 0.00%) let adjustments = typeck_results.expr_adjustments(expr); 26,277 ( 0.00%) if adjustments.is_empty() { 226,332 ( 0.01%) return Ok(place); . } . . debug!("constrain_adjustments: adjustments={:?}", adjustments); . . // If necessary, constrain destructors in the unadjusted form of this . // expression. . self.check_safety_of_rvalue_destructor_if_necessary(&place, expr.span); . . for adjustment in adjustments { . debug!("constrain_adjustments: adjustment={:?}, place={:?}", adjustment, place); . 6,678 ( 0.00%) if let adjustment::Adjust::Deref(Some(deref)) = adjustment.kind { . self.link_region( . expr.span, . deref.region, . ty::BorrowKind::from_mutbl(deref.mutbl), . &place, . ); . } . 1,936 ( 0.00%) if let adjustment::Adjust::Borrow(ref autoref) = adjustment.kind { . self.link_autoref(expr, &place, autoref); . } . 23,955 ( 0.00%) place = self.with_mc(|mc| mc.cat_expr_adjusted(expr, place, adjustment))?; . } . 11,290 ( 0.00%) Ok(place) . } . . fn check_safety_of_rvalue_destructor_if_necessary( . &mut self, . place_with_id: &PlaceWithHirId<'tcx>, . span: Span, . ) { 54,812 ( 0.00%) if let PlaceBase::Rvalue = place_with_id.place.base { 25,838 ( 0.00%) if place_with_id.place.projections.is_empty() { 27,098 ( 0.00%) let typ = self.resolve_type(place_with_id.place.ty()); 51,544 ( 0.00%) let body_id = self.body_id; 103,088 ( 0.01%) dropck::check_drop_obligations(self, typ, span, body_id); . } . } . } . /// Adds constraints to inference such that `T: 'a` holds (or . /// reports an error if it cannot). . /// . /// # Parameters . /// -- line 565 ---------------------------------------- -- line 567 ---------------------------------------- . /// - `ty`, the type `T` . /// - `region`, the region `'a` . pub fn type_must_outlive( . &self, . origin: infer::SubregionOrigin<'tcx>, . ty: Ty<'tcx>, . region: ty::Region<'tcx>, . ) { 3,222 ( 0.00%) self.infcx.register_region_obligation( 3,222 ( 0.00%) self.body_id, 8,592 ( 0.00%) RegionObligation { sub_region: region, sup_type: ty, origin }, . ); . } . . /// Computes the guarantor for an expression `&base` and then ensures that the lifetime of the . /// resulting pointer is linked to the lifetime of its guarantor (if any). . fn link_addr_of( . &mut self, . expr: &hir::Expr<'_>, . mutability: hir::Mutability, . base: &hir::Expr<'_>, . ) { . debug!("link_addr_of(expr={:?}, base={:?})", expr, base); . 1,782 ( 0.00%) let cmt = ignore_err!(self.with_mc(|mc| mc.cat_expr(base))); . . debug!("link_addr_of: cmt={:?}", cmt); . 486 ( 0.00%) self.link_region_from_node_type(expr.span, expr.hir_id, mutability, &cmt); . } . . /// Computes the guarantors for any ref bindings in a `let` and . /// then ensures that the lifetime of the resulting pointer is . /// linked to the lifetime of the initialization expression. . fn link_local(&self, local: &hir::Local<'_>) { . debug!("regionck::for_local()"); 369 ( 0.00%) let init_expr = match local.init { . None => { . return; . } . Some(expr) => &*expr, . }; 1,170 ( 0.00%) let discr_cmt = ignore_err!(self.with_mc(|mc| mc.cat_expr(init_expr))); 936 ( 0.00%) self.link_pattern(discr_cmt, local.pat); . } . . /// Computes the guarantors for any ref bindings in a match and . /// then ensures that the lifetime of the resulting pointer is . /// linked to the lifetime of its guarantor (if any). . fn link_match(&self, discr: &hir::Expr<'_>, arms: &[hir::Arm<'_>]) { . debug!("regionck::for_match()"); 940 ( 0.00%) let discr_cmt = ignore_err!(self.with_mc(|mc| mc.cat_expr(discr))); . debug!("discr_cmt={:?}", discr_cmt); . for arm in arms { 1,388 ( 0.00%) self.link_pattern(discr_cmt.clone(), arm.pat); . } . } . . /// Computes the guarantors for any ref bindings in a match and . /// then ensures that the lifetime of the resulting pointer is . /// linked to the lifetime of its guarantor (if any). . fn link_fn_params(&self, params: &[hir::Param<'_>]) { . for param in params { 908 ( 0.00%) let param_ty = self.node_ty(param.hir_id); . let param_cmt = 454 ( 0.00%) self.with_mc(|mc| mc.cat_rvalue(param.hir_id, param.pat.span, param_ty)); . debug!("param_ty={:?} param_cmt={:?} param={:?}", param_ty, param_cmt, param); 2,724 ( 0.00%) self.link_pattern(param_cmt, param.pat); . } . } . . /// Link lifetimes of any ref bindings in `root_pat` to the pointers found . /// in the discriminant, if needed. 4,146 ( 0.00%) fn link_pattern(&self, discr_cmt: PlaceWithHirId<'tcx>, root_pat: &hir::Pat<'_>) { . debug!("link_pattern(discr_cmt={:?}, root_pat={:?})", discr_cmt, root_pat); . ignore_err!(self.with_mc(|mc| { 2,073 ( 0.00%) mc.cat_pattern(discr_cmt, root_pat, |sub_cmt, hir::Pat { kind, span, hir_id, .. }| { . // `ref x` pattern 2,296 ( 0.00%) if let PatKind::Binding(..) = kind { 1,806 ( 0.00%) if let Some(ty::BindByReference(mutbl)) = 6,104 ( 0.00%) mc.typeck_results.extract_binding_mode(self.tcx.sess, *hir_id, *span) . { . self.link_region_from_node_type(*span, *hir_id, mutbl, sub_cmt); . } . } . }) . })); 4,146 ( 0.00%) } . . /// Link lifetime of borrowed pointer resulting from autoref to lifetimes in the value being . /// autoref'd. . fn link_autoref( . &self, . expr: &hir::Expr<'_>, . expr_cmt: &PlaceWithHirId<'tcx>, . autoref: &adjustment::AutoBorrow<'tcx>, . ) { . debug!("link_autoref(autoref={:?}, expr_cmt={:?})", autoref, expr_cmt); . 1,700 ( 0.00%) match *autoref { 1,700 ( 0.00%) adjustment::AutoBorrow::Ref(r, m) => { 8,500 ( 0.00%) self.link_region(expr.span, r, ty::BorrowKind::from_mutbl(m.into()), expr_cmt); . } . . adjustment::AutoBorrow::RawPtr(_) => {} . } . } . . /// Like `link_region()`, except that the region is extracted from the type of `id`, . /// which must be some reference (`&T`, `&str`, etc). -- line 676 ---------------------------------------- -- line 682 ---------------------------------------- . cmt_borrowed: &PlaceWithHirId<'tcx>, . ) { . debug!( . "link_region_from_node_type(id={:?}, mutbl={:?}, cmt_borrowed={:?})", . id, mutbl, cmt_borrowed . ); . . let rptr_ty = self.resolve_node_type(id); 448 ( 0.00%) if let ty::Ref(r, _, _) = rptr_ty.kind() { . debug!("rptr_ty={}", rptr_ty); 1,692 ( 0.00%) self.link_region(span, r, ty::BorrowKind::from_mutbl(mutbl), cmt_borrowed); . } . } . . /// Informs the inference engine that `borrow_cmt` is being borrowed with . /// kind `borrow_kind` and lifetime `borrow_region`. . /// In order to ensure borrowck is satisfied, this may create constraints . /// between regions, as explained in `link_reborrowed_region()`. 11,814 ( 0.00%) fn link_region( . &self, . span: Span, . borrow_region: ty::Region<'tcx>, . borrow_kind: ty::BorrowKind, . borrow_place: &PlaceWithHirId<'tcx>, . ) { 3,222 ( 0.00%) let origin = infer::DataBorrowed(borrow_place.place.ty(), span); 6,444 ( 0.00%) self.type_must_outlive(origin, borrow_place.place.ty(), borrow_region); . 6,103 ( 0.00%) for pointer_ty in borrow_place.place.deref_tys() { . debug!( . "link_region(borrow_region={:?}, borrow_kind={:?}, pointer_ty={:?})", . borrow_region, borrow_kind, borrow_place . ); 2,199 ( 0.00%) match *pointer_ty.kind() { . ty::RawPtr(_) => return, 6,597 ( 0.00%) ty::Ref(ref_region, _, ref_mutability) => { 733 ( 0.00%) if self.link_reborrowed_region(span, borrow_region, ref_region, ref_mutability) . { . return; . } . } . _ => assert!(pointer_ty.is_box(), "unexpected built-in deref type {}", pointer_ty), . } . } 1,167 ( 0.00%) if let PlaceBase::Upvar(upvar_id) = borrow_place.place.base { . self.link_upvar_region(span, borrow_region, upvar_id); . } 8,592 ( 0.00%) } . . /// This is the most complicated case: the path being borrowed is . /// itself the referent of a borrowed pointer. Let me give an . /// example fragment of code to make clear(er) the situation: . /// . /// ```ignore (incomplete Rust code) . /// let r: &'a mut T = ...; // the original reference "r" has lifetime 'a . /// ... -- line 737 ---------------------------------------- -- line 764 ---------------------------------------- . fn link_reborrowed_region( . &self, . span: Span, . borrow_region: ty::Region<'tcx>, . ref_region: ty::Region<'tcx>, . ref_mutability: hir::Mutability, . ) -> bool { . debug!("link_reborrowed_region: {:?} <= {:?}", borrow_region, ref_region); 3,665 ( 0.00%) self.sub_regions(infer::Reborrow(span), borrow_region, ref_region); . . // Decide whether we need to recurse and link any regions within . // the `ref_cmt`. This is concerned for the case where the value . // being reborrowed is in fact a borrowed pointer found within . // another borrowed pointer. For example: . // . // let p: &'b &'a mut T = ...; . // ... -- line 780 ---------------------------------------- -- line 834 ---------------------------------------- . borrow_region: ty::Region<'tcx>, . upvar_id: ty::UpvarId, . ) { . debug!("link_upvar_region(borrorw_region={:?}, upvar_id={:?}", borrow_region, upvar_id); . // A by-reference upvar can't be borrowed for longer than the . // upvar is borrowed from the environment. . let closure_local_def_id = upvar_id.closure_expr_id; . let mut all_captures_are_imm_borrow = true; 15 ( 0.00%) for captured_place in self . .typeck_results . .borrow() . .closure_min_captures . .get(&closure_local_def_id.to_def_id()) . .and_then(|root_var_min_cap| root_var_min_cap.get(&upvar_id.var_path.hir_id)) . .into_iter() . .flatten() . { 75 ( 0.00%) match captured_place.info.capture_kind { . ty::UpvarCapture::ByRef(upvar_borrow) => { 15 ( 0.00%) self.sub_regions( 105 ( 0.00%) infer::ReborrowUpvar(span, upvar_id), . borrow_region, 15 ( 0.00%) captured_place.region.unwrap(), . ); 90 ( 0.00%) if let ty::ImmBorrow = upvar_borrow { . debug!("link_upvar_region: capture by shared ref"); . } else { . all_captures_are_imm_borrow = false; . } . } . ty::UpvarCapture::ByValue => { . all_captures_are_imm_borrow = false; . } . } . } 30 ( 0.00%) if all_captures_are_imm_borrow { . return; . } . let fn_hir_id = self.tcx.hir().local_def_id_to_hir_id(closure_local_def_id); . let ty = self.resolve_node_type(fn_hir_id); . debug!("link_upvar_region: ty={:?}", ty); . . // A closure capture can't be borrowed for longer than the . // reference to the closure. -- line 877 ---------------------------------------- 226,310 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/mod.rs -------------------------------------------------------------------------------- Ir -- line 111 ---------------------------------------- . const EMPTY: u8 = 0b1111_1111; . . /// Control byte value for a deleted bucket. . const DELETED: u8 = 0b1000_0000; . . /// Checks whether a control byte represents a full bucket (top bit is clear). . #[inline] . fn is_full(ctrl: u8) -> bool { 1,200,966 ( 0.07%) ctrl & 0x80 == 0 . } . . /// Checks whether a control byte represents a special value (top bit is set). . #[inline] . fn is_special(ctrl: u8) -> bool { . ctrl & 0x80 != 0 . } . . /// Checks whether a special control value is EMPTY (just check 1 bit). . #[inline] . fn special_is_empty(ctrl: u8) -> bool { . debug_assert!(is_special(ctrl)); 49,991 ( 0.00%) ctrl & 0x01 != 0 . } . . /// Primary hash function, used to select the initial bucket to probe from. . #[inline] . #[allow(clippy::cast_possible_truncation)] . fn h1(hash: u64) -> usize { . // On 32-bit platforms we simply ignore the higher hash bits. . hash as usize -- line 140 ---------------------------------------- -- line 143 ---------------------------------------- . /// Secondary hash function, saved in the low 7 bits of the control byte. . #[inline] . #[allow(clippy::cast_possible_truncation)] . fn h2(hash: u64) -> u8 { . // Grab the top 7 bits of the hash. While the hash is normally a full 64-bit . // value, some hash functions (such as FxHash) produce a usize result . // instead, which means that the top 32 bits are 0 on 32-bit platforms. . let hash_len = usize::min(mem::size_of::(), mem::size_of::()); 27,989,989 ( 1.63%) let top7 = hash >> (hash_len * 8 - 7); . (top7 & 0x7f) as u8 // truncation . } . . /// Probe sequence based on triangular numbers, which is guaranteed (since our . /// table size is a power of two) to visit every group of elements exactly once. . /// . /// A triangular probe has us jump by 1 more group every time. So first we . /// jump by 1 group (meaning we just continue our linear scan), then 2 groups -- line 159 ---------------------------------------- -- line 170 ---------------------------------------- . #[inline] . fn move_next(&mut self, bucket_mask: usize) { . // We should have found an empty bucket by now and ended the probe. . debug_assert!( . self.stride <= bucket_mask, . "Went past end of probe sequence" . ); . 449,638 ( 0.03%) self.stride += Group::WIDTH; 449,638 ( 0.03%) self.pos += self.stride; 388,184 ( 0.02%) self.pos &= bucket_mask; . } . } . . /// Returns the number of buckets needed to hold the given number of items, . /// taking the maximum load factor into account. . /// . /// Returns `None` if an overflow occurs. . // Workaround for emscripten bug emscripten-core/emscripten-fastcomp#258 . #[cfg_attr(target_os = "emscripten", inline(never))] . #[cfg_attr(not(target_os = "emscripten"), inline)] . fn capacity_to_buckets(cap: usize) -> Option { . debug_assert_ne!(cap, 0); . . // For small tables we require at least 1 empty bucket so that lookups are . // guaranteed to terminate if an element doesn't exist in the table. 60,994 ( 0.00%) if cap < 8 { . // We don't bother with a table size of 2 buckets since that can only . // hold a single element. Instead we skip directly to a 4 bucket table . // which can hold 3 elements. 129,575 ( 0.01%) return Some(if cap < 4 { 4 } else { 8 }); . } . . // Otherwise require 1/8 buckets to be empty (87.5% load) . // . // Be careful when modifying this, calculate_layout relies on the . // overflow check here. 27,492 ( 0.00%) let adjusted_cap = cap.checked_mul(8)? / 7; . . // Any overflows will have been caught by the checked_mul. Also, any . // rounding errors from the division above will be cleaned up by . // next_power_of_two (which can't overflow because of the previous division). . Some(adjusted_cap.next_power_of_two()) . } . . /// Returns the maximum effective capacity for the given bucket mask, taking . /// the maximum load factor into account. . #[inline] . fn bucket_mask_to_capacity(bucket_mask: usize) -> usize { 152,128 ( 0.01%) if bucket_mask < 8 { . // For tables with 1/2/4/8 buckets, we always reserve one empty slot. . // Keep in mind that the bucket mask is one less than the bucket count. . bucket_mask . } else { . // For larger tables we reserve 12.5% of the slots as empty. 37,902 ( 0.00%) ((bucket_mask + 1) / 8) * 7 . } . } . . /// Helper which allows the max calculation for ctrl_align to be statically computed for each T . /// while keeping the rest of `calculate_layout_for` independent of `T` . #[derive(Copy, Clone)] . struct TableLayout { . size: usize, -- line 233 ---------------------------------------- -- line 246 ---------------------------------------- . . #[inline] . fn calculate_layout_for(self, buckets: usize) -> Option<(Layout, usize)> { . debug_assert!(buckets.is_power_of_two()); . . let TableLayout { size, ctrl_align } = self; . // Manual layout calculation since Layout methods are not yet stable. . let ctrl_offset = 131,642 ( 0.01%) size.checked_mul(buckets)?.checked_add(ctrl_align - 1)? & !(ctrl_align - 1); 170,527 ( 0.01%) let len = ctrl_offset.checked_add(buckets + Group::WIDTH)?; . . Some(( . unsafe { Layout::from_size_align_unchecked(len, ctrl_align) }, . ctrl_offset, . )) . } . } . -- line 263 ---------------------------------------- -- line 337 ---------------------------------------- . } . } . #[cfg_attr(feature = "inline-more", inline)] . pub unsafe fn drop(&self) { . self.as_ptr().drop_in_place(); . } . #[inline] . pub unsafe fn read(&self) -> T { 674 ( 0.00%) self.as_ptr().read() . } . #[inline] . pub unsafe fn write(&self, val: T) { . self.as_ptr().write(val); . } . #[inline] . pub unsafe fn as_ref<'a>(&self) -> &'a T { . &*self.as_ptr() -- line 353 ---------------------------------------- -- line 422 ---------------------------------------- . /// Creates a new empty hash table without allocating any memory, using the . /// given allocator. . /// . /// In effect this returns a table with exactly 1 bucket. However we can . /// leave the data pointer dangling since that bucket is never written to . /// due to our load factor forcing us to always have at least 1 free bucket. . #[inline] . pub fn new_in(alloc: A) -> Self { 177 ( 0.00%) Self { . table: RawTableInner::new_in(alloc), . marker: PhantomData, . } . } . . /// Allocates a new hash table with the given number of buckets. . /// . /// The control bytes are left uninitialized. -- line 438 ---------------------------------------- -- line 440 ---------------------------------------- . unsafe fn new_uninitialized( . alloc: A, . buckets: usize, . fallibility: Fallibility, . ) -> Result { . debug_assert!(buckets.is_power_of_two()); . . Ok(Self { 135 ( 0.00%) table: RawTableInner::new_uninitialized( . alloc, . TableLayout::new::(), . buckets, . fallibility, . )?, . marker: PhantomData, . }) . } -- line 456 ---------------------------------------- -- line 458 ---------------------------------------- . /// Attempts to allocate a new hash table with at least enough capacity . /// for inserting the given number of elements without reallocating. . fn fallible_with_capacity( . alloc: A, . capacity: usize, . fallibility: Fallibility, . ) -> Result { . Ok(Self { 3,210 ( 0.00%) table: RawTableInner::fallible_with_capacity( . alloc, . TableLayout::new::(), . capacity, . fallibility, . )?, . marker: PhantomData, . }) . } -- line 474 ---------------------------------------- -- line 527 ---------------------------------------- . debug_assert_ne!(self.table.bucket_mask, 0); . debug_assert!(index < self.buckets()); . Bucket::from_base_index(self.data_end(), index) . } . . /// Erases an element from the table without dropping it. . #[cfg_attr(feature = "inline-more", inline)] . #[deprecated(since = "0.8.1", note = "use erase or remove instead")] 7,717 ( 0.00%) pub unsafe fn erase_no_drop(&mut self, item: &Bucket) { 7,717 ( 0.00%) let index = self.bucket_index(item); . self.table.erase(index); 15,434 ( 0.00%) } . . /// Erases an element from the table, dropping it in place. . #[cfg_attr(feature = "inline-more", inline)] . #[allow(clippy::needless_pass_by_value)] . #[allow(deprecated)] . pub unsafe fn erase(&mut self, item: Bucket) { . // Erase the element from the table first since drop might panic. 4,148 ( 0.00%) self.erase_no_drop(&item); . item.drop(); . } . . /// Finds and erases an element from the table, dropping it in place. . /// Returns true if an element was found. . #[cfg(feature = "raw")] . #[cfg_attr(feature = "inline-more", inline)] . pub fn erase_entry(&mut self, hash: u64, eq: impl FnMut(&T) -> bool) -> bool { -- line 554 ---------------------------------------- -- line 563 ---------------------------------------- . } . } . . /// Removes an element from the table, returning it. . #[cfg_attr(feature = "inline-more", inline)] . #[allow(clippy::needless_pass_by_value)] . #[allow(deprecated)] . pub unsafe fn remove(&mut self, item: Bucket) -> T { 11,286 ( 0.00%) self.erase_no_drop(&item); 89 ( 0.00%) item.read() . } . . /// Finds and removes an element from the table, returning it. . #[cfg_attr(feature = "inline-more", inline)] 539,434 ( 0.03%) pub fn remove_entry(&mut self, hash: u64, eq: impl FnMut(&T) -> bool) -> Option { . // Avoid `Option::map` because it bloats LLVM IR. 194 ( 0.00%) match self.find(hash, eq) { 4,306 ( 0.00%) Some(bucket) => Some(unsafe { self.remove(bucket) }), 233,064 ( 0.01%) None => None, . } 817,259 ( 0.05%) } . . /// Marks all table buckets as empty without dropping their contents. . #[cfg_attr(feature = "inline-more", inline)] . pub fn clear_no_drop(&mut self) { . self.table.clear_no_drop(); . } . . /// Removes all elements from the table without freeing the backing memory. . #[cfg_attr(feature = "inline-more", inline)] . pub fn clear(&mut self) { . // Ensure that the table is reset even if one of the drops panic . let mut self_ = guard(self, |self_| self_.clear_no_drop()); . unsafe { 1 ( 0.00%) self_.drop_elements(); . } . } . 7 ( 0.00%) unsafe fn drop_elements(&mut self) { 5,072 ( 0.00%) if mem::needs_drop::() && !self.is_empty() { . for item in self.iter() { . item.drop(); . } . } 8 ( 0.00%) } . . /// Shrinks the table to fit `max(self.len(), min_size)` elements. . #[cfg_attr(feature = "inline-more", inline)] . pub fn shrink_to(&mut self, min_size: usize, hasher: impl Fn(&T) -> u64) { . // Calculate the minimal number of elements that we need to reserve . // space for. . let min_size = usize::max(self.table.items, min_size); . if min_size == 0 { -- line 615 ---------------------------------------- -- line 642 ---------------------------------------- . } . } . } . . /// Ensures that at least `additional` items can be inserted into the table . /// without reallocation. . #[cfg_attr(feature = "inline-more", inline)] . pub fn reserve(&mut self, additional: usize, hasher: impl Fn(&T) -> u64) { 153,910 ( 0.01%) if additional > self.table.growth_left { . // Avoid `Result::unwrap_or_else` because it bloats LLVM IR. 97,353 ( 0.01%) if self . .reserve_rehash(additional, hasher, Fallibility::Infallible) . .is_err() . { . unsafe { hint::unreachable_unchecked() } . } . } . } . -- line 660 ---------------------------------------- -- line 671 ---------------------------------------- . } else { . Ok(()) . } . } . . /// Out-of-line slow path for `reserve` and `try_reserve`. . #[cold] . #[inline(never)] 248,423 ( 0.01%) fn reserve_rehash( . &mut self, . additional: usize, . hasher: impl Fn(&T) -> u64, . fallibility: Fallibility, . ) -> Result<(), TryReserveError> { . unsafe { . self.table.reserve_rehash_inner( . additional, -- line 687 ---------------------------------------- -- line 690 ---------------------------------------- . TableLayout::new::(), . if mem::needs_drop::() { . Some(mem::transmute(ptr::drop_in_place:: as unsafe fn(*mut T))) . } else { . None . }, . ) . } 178,656 ( 0.01%) } . . /// Allocates a new table of a different size and moves the contents of the . /// current table into it. . fn resize( . &mut self, . capacity: usize, . hasher: impl Fn(&T) -> u64, . fallibility: Fallibility, -- line 706 ---------------------------------------- -- line 714 ---------------------------------------- . ) . } . } . . /// Inserts a new element into the table, and returns its raw bucket. . /// . /// This does not check if the given element already exists in the table. . #[cfg_attr(feature = "inline-more", inline)] 1,526,844 ( 0.09%) pub fn insert(&mut self, hash: u64, value: T, hasher: impl Fn(&T) -> u64) -> Bucket { . unsafe { . let mut index = self.table.find_insert_slot(hash); . . // We can avoid growing the table once we have reached our load . // factor if we are replacing a tombstone. This works since the . // number of EMPTY slots does not change in this case. 2,511 ( 0.00%) let old_ctrl = *self.table.ctrl(index); 1,189,667 ( 0.07%) if unlikely(self.table.growth_left == 0 && special_is_empty(old_ctrl)) { . self.reserve(1, hasher); . index = self.table.find_insert_slot(hash); . } . . self.table.record_item_insert_at(index, old_ctrl, hash); . . let bucket = self.bucket(index); 2 ( 0.00%) bucket.write(value); . bucket . } 1,132,196 ( 0.07%) } . . /// Attempts to insert a new element without growing the table and return its raw bucket. . /// . /// Returns an `Err` containing the given element if inserting it would require growing the . /// table. . /// . /// This does not check if the given element already exists in the table. . #[cfg(feature = "raw")] -- line 749 ---------------------------------------- -- line 760 ---------------------------------------- . } . } . } . . /// Inserts a new element into the table, and returns a mutable reference to it. . /// . /// This does not check if the given element already exists in the table. . #[cfg_attr(feature = "inline-more", inline)] 327,720 ( 0.02%) pub fn insert_entry(&mut self, hash: u64, value: T, hasher: impl Fn(&T) -> u64) -> &mut T { 79 ( 0.00%) unsafe { self.insert(hash, value, hasher).as_mut() } 245,790 ( 0.01%) } . . /// Inserts a new element into the table, without growing the table. . /// . /// There must be enough space in the table to insert the new element. . /// . /// This does not check if the given element already exists in the table. . #[cfg_attr(feature = "inline-more", inline)] . #[cfg(any(feature = "raw", feature = "rustc-internal-api"))] 838 ( 0.00%) pub unsafe fn insert_no_grow(&mut self, hash: u64, value: T) -> Bucket { 139,965 ( 0.01%) let (index, old_ctrl) = self.table.prepare_insert_slot(hash); 9,095 ( 0.00%) let bucket = self.table.bucket(index); . . // If we are replacing a DELETED entry then we don't need to update . // the load counter. 296,070 ( 0.02%) self.table.growth_left -= special_is_empty(old_ctrl) as usize; . . bucket.write(value); 231,096 ( 0.01%) self.table.items += 1; . bucket 1,462 ( 0.00%) } . . /// Temporary removes a bucket, applying the given function to the removed . /// element and optionally put back the returned value in the same bucket. . /// . /// Returns `true` if the bucket still contains an element . /// . /// This does not check if the given bucket is actually occupied. . #[cfg_attr(feature = "inline-more", inline)] -- line 798 ---------------------------------------- -- line 813 ---------------------------------------- . true . } else { . false . } . } . . /// Searches for an element in the table. . #[inline] 2,088 ( 0.00%) pub fn find(&self, hash: u64, mut eq: impl FnMut(&T) -> bool) -> Option> { 44,772 ( 0.00%) let result = self.table.find_inner(hash, &mut |index| unsafe { 37,215 ( 0.00%) eq(self.bucket(index).as_ref()) 27,208 ( 0.00%) }); . . // Avoid `Option::map` because it bloats LLVM IR. . match result { 6,392 ( 0.00%) Some(index) => Some(unsafe { self.bucket(index) }), . None => None, . } 2,088 ( 0.00%) } . . /// Gets a reference to an element in the table. . #[inline] . pub fn get(&self, hash: u64, eq: impl FnMut(&T) -> bool) -> Option<&T> { . // Avoid `Option::map` because it bloats LLVM IR. 17,384 ( 0.00%) match self.find(hash, eq) { . Some(bucket) => Some(unsafe { bucket.as_ref() }), . None => None, . } . } . . /// Gets a mutable reference to an element in the table. . #[inline] . pub fn get_mut(&mut self, hash: u64, eq: impl FnMut(&T) -> bool) -> Option<&mut T> { . // Avoid `Option::map` because it bloats LLVM IR. 1,281 ( 0.00%) match self.find(hash, eq) { . Some(bucket) => Some(unsafe { bucket.as_mut() }), . None => None, . } . } . . /// Attempts to get mutable references to `N` entries in the table at once. . /// . /// Returns an array of length `N` with the results of each query. -- line 855 ---------------------------------------- -- line 920 ---------------------------------------- . #[inline] . pub fn len(&self) -> usize { . self.table.items . } . . /// Returns `true` if the table contains no elements. . #[inline] . pub fn is_empty(&self) -> bool { 1,274,717 ( 0.07%) self.len() == 0 . } . . /// Returns the number of buckets in the table. . #[inline] . pub fn buckets(&self) -> usize { . self.table.bucket_mask + 1 . } . . /// Returns an iterator over every element in the table. It is up to . /// the caller to ensure that the `RawTable` outlives the `RawIter`. . /// Because we cannot make the `next` method unsafe on the `RawIter` . /// struct, we have to make the `iter` method unsafe. . #[inline] . pub unsafe fn iter(&self) -> RawIter { 23 ( 0.00%) let data = Bucket::from_base_index(self.data_end(), 0); . RawIter { . iter: RawIterRange::new(self.table.ctrl.as_ptr(), data, self.table.buckets()), 182,775 ( 0.01%) items: self.table.items, . } . } . . /// Returns an iterator over occupied buckets that could match a given hash. . /// . /// `RawTable` only stores 7 bits of the hash value, so this iterator may . /// return items that have a hash value different than the one provided. You . /// should always validate the returned values before using them. -- line 954 ---------------------------------------- -- line 995 ---------------------------------------- . /// Iteration starts at the provided iterator's current location. . /// . /// It is up to the caller to ensure that the iterator is valid for this . /// `RawTable` and covers all items that remain in the table. . pub unsafe fn into_iter_from(self, iter: RawIter) -> RawIntoIter { . debug_assert_eq!(iter.len(), self.len()); . . let alloc = self.table.alloc.clone(); 3,800 ( 0.00%) let allocation = self.into_allocation(); 2,850 ( 0.00%) RawIntoIter { 4,750 ( 0.00%) iter, . allocation, . marker: PhantomData, . alloc, . } . } . . /// Converts the table into a raw allocation. The contents of the table . /// should be dropped using a `RawIter` before freeing the allocation. . #[cfg_attr(feature = "inline-more", inline)] . pub(crate) fn into_allocation(self) -> Option<(NonNull, Layout)> { 1,663 ( 0.00%) let alloc = if self.table.is_empty_singleton() { . None . } else { . // Avoid `Option::unwrap_or_else` because it bloats LLVM IR. . let (layout, ctrl_offset) = match calculate_layout::(self.table.buckets()) { . Some(lco) => lco, . None => unsafe { hint::unreachable_unchecked() }, . }; . Some(( 293 ( 0.00%) unsafe { NonNull::new_unchecked(self.table.ctrl.as_ptr().sub(ctrl_offset)) }, . layout, . )) . }; . mem::forget(self); . alloc . } . } . -- line 1033 ---------------------------------------- -- line 1042 ---------------------------------------- . T: Sync, . A: Sync, . { . } . . impl RawTableInner { . #[inline] . const fn new_in(alloc: A) -> Self { 711,299 ( 0.04%) Self { . // Be careful to cast the entire slice to a raw pointer. . ctrl: unsafe { NonNull::new_unchecked(Group::static_empty() as *const _ as *mut u8) }, . bucket_mask: 0, . items: 0, . growth_left: 0, . alloc, . } . } . } . . impl RawTableInner { . #[cfg_attr(feature = "inline-more", inline)] 251,220 ( 0.01%) unsafe fn new_uninitialized( . alloc: A, . table_layout: TableLayout, . buckets: usize, . fallibility: Fallibility, . ) -> Result { . debug_assert!(buckets.is_power_of_two()); . . // Avoid `Option::ok_or_else` because it bloats LLVM IR. -- line 1071 ---------------------------------------- -- line 1078 ---------------------------------------- . // exceed `isize::MAX`. We can skip this check on 64-bit systems since . // such allocations will never succeed anyways. . // . // This mirrors what Vec does in the standard library. . if mem::size_of::() < 8 && layout.size() > isize::MAX as usize { . return Err(fallibility.capacity_overflow()); . } . 54,312 ( 0.00%) let ptr: NonNull = match do_alloc(&alloc, layout) { . Ok(block) => block.cast(), . Err(_) => return Err(fallibility.alloc_err(layout)), . }; . . let ctrl = NonNull::new_unchecked(ptr.as_ptr().add(ctrl_offset)); 138,816 ( 0.01%) Ok(Self { . ctrl, 53,660 ( 0.00%) bucket_mask: buckets - 1, . items: 0, . growth_left: bucket_mask_to_capacity(buckets - 1), . alloc, . }) 182,904 ( 0.01%) } . . #[inline] 8,394 ( 0.00%) fn fallible_with_capacity( . alloc: A, . table_layout: TableLayout, . capacity: usize, . fallibility: Fallibility, . ) -> Result { 2,214 ( 0.00%) if capacity == 0 { 1,436 ( 0.00%) Ok(Self::new_in(alloc)) . } else { . unsafe { . let buckets = . capacity_to_buckets(capacity).ok_or_else(|| fallibility.capacity_overflow())?; . 114,291 ( 0.01%) let result = Self::new_uninitialized(alloc, table_layout, buckets, fallibility)?; . result.ctrl(0).write_bytes(EMPTY, result.num_ctrl_bytes()); . 4,736 ( 0.00%) Ok(result) . } . } 8,394 ( 0.00%) } . . /// Searches for an empty or deleted bucket which is suitable for inserting . /// a new element and sets the hash for that slot. . /// . /// There must be at least 1 empty bucket in the table. . #[inline] 49,316 ( 0.00%) unsafe fn prepare_insert_slot(&self, hash: u64) -> (usize, u8) { . let index = self.find_insert_slot(hash); 49,316 ( 0.00%) let old_ctrl = *self.ctrl(index); . self.set_ctrl_h2(index, hash); . (index, old_ctrl) 98,632 ( 0.01%) } . . /// Searches for an empty or deleted bucket which is suitable for inserting . /// a new element. . /// . /// There must be at least 1 empty bucket in the table. . #[inline] . fn find_insert_slot(&self, hash: u64) -> usize { . let mut probe_seq = self.probe_seq(hash); . loop { . unsafe { . let group = Group::load(self.ctrl(probe_seq.pos)); 790,290 ( 0.05%) if let Some(bit) = group.match_empty_or_deleted().lowest_set_bit() { 2,230,945 ( 0.13%) let result = (probe_seq.pos + bit) & self.bucket_mask; . . // In tables smaller than the group width, trailing control . // bytes outside the range of the table are filled with . // EMPTY entries. These will unfortunately trigger a . // match, but once masked may point to a full bucket that . // is already occupied. We detect this situation here and . // perform a second scan starting at the beginning of the . // table. This second scan is guaranteed to find an empty . // slot (due to the load factor) before hitting the trailing . // control bytes (containing EMPTY). 1,040,852 ( 0.06%) if unlikely(is_full(*self.ctrl(result))) { . debug_assert!(self.bucket_mask < Group::WIDTH); . debug_assert_ne!(probe_seq.pos, 0); . return Group::load_aligned(self.ctrl(0)) . .match_empty_or_deleted() . .lowest_set_bit_nonzero(); . } . . return result; -- line 1165 ---------------------------------------- -- line 1171 ---------------------------------------- . . /// Searches for an element in the table. This uses dynamic dispatch to reduce the amount of . /// code generated, but it is eliminated by LLVM optimizations. . #[inline] . fn find_inner(&self, hash: u64, eq: &mut dyn FnMut(usize) -> bool) -> Option { . let h2_hash = h2(hash); . let mut probe_seq = self.probe_seq(hash); . 26,184 ( 0.00%) loop { . let group = unsafe { Group::load(self.ctrl(probe_seq.pos)) }; . 3,783,089 ( 0.22%) for bit in group.match_byte(h2_hash) { 7,213,231 ( 0.42%) let index = (probe_seq.pos + bit) & self.bucket_mask; . 4,482,840 ( 0.26%) if likely(eq(index)) { . return Some(index); . } . } . 1,137,478 ( 0.07%) if likely(group.match_empty().any_bit_set()) { . return None; . } . . probe_seq.move_next(self.bucket_mask); . } . } . . #[allow(clippy::mut_mut)] . #[inline] . unsafe fn prepare_rehash_in_place(&mut self) { . // Bulk convert all full control bytes to DELETED, and all DELETED . // control bytes to EMPTY. This effectively frees up all buckets . // containing a DELETED entry. 6 ( 0.00%) for i in (0..self.buckets()).step_by(Group::WIDTH) { . let group = Group::load_aligned(self.ctrl(i)); . let group = group.convert_special_to_empty_and_full_to_deleted(); . group.store_aligned(self.ctrl(i)); . } . . // Fix up the trailing control bytes. See the comments in set_ctrl . // for the handling of tables smaller than the group width. 6 ( 0.00%) if self.buckets() < Group::WIDTH { . self.ctrl(0) . .copy_to(self.ctrl(Group::WIDTH), self.buckets()); . } else { . self.ctrl(0) . .copy_to(self.ctrl(self.buckets()), Group::WIDTH); . } . } . -- line 1220 ---------------------------------------- -- line 1225 ---------------------------------------- . Bucket::from_base_index(self.data_end(), index) . } . . #[inline] . unsafe fn bucket_ptr(&self, index: usize, size_of: usize) -> *mut u8 { . debug_assert_ne!(self.bucket_mask, 0); . debug_assert!(index < self.buckets()); . let base: *mut u8 = self.data_end().as_ptr(); 3,032,672 ( 0.18%) base.sub((index + 1) * size_of) . } . . #[inline] . unsafe fn data_end(&self) -> NonNull { . NonNull::new_unchecked(self.ctrl.as_ptr().cast()) . } . . /// Returns an iterator-like object for a probe sequence on the table. . /// . /// This iterator never terminates, but is guaranteed to visit each bucket . /// group exactly once. The loop using `probe_seq` must terminate upon . /// reaching a group containing an empty bucket. . #[inline] . fn probe_seq(&self, hash: u64) -> ProbeSeq { . ProbeSeq { 18,310,327 ( 1.06%) pos: h1(hash) & self.bucket_mask, . stride: 0, . } . } . . /// Returns the index of a bucket for which a value must be inserted if there is enough rooom . /// in the table, otherwise returns error . #[cfg(feature = "raw")] . #[inline] -- line 1257 ---------------------------------------- -- line 1263 ---------------------------------------- . } else { . self.record_item_insert_at(index, old_ctrl, hash); . Ok(index) . } . } . . #[inline] . unsafe fn record_item_insert_at(&mut self, index: usize, old_ctrl: u8, hash: u64) { 1,486,770 ( 0.09%) self.growth_left -= special_is_empty(old_ctrl) as usize; . self.set_ctrl_h2(index, hash); 1,189,416 ( 0.07%) self.items += 1; . } . . #[inline] . fn is_in_same_group(&self, i: usize, new_i: usize, hash: u64) -> bool { . let probe_seq_pos = self.probe_seq(hash).pos; . let probe_index = . |pos: usize| (pos.wrapping_sub(probe_seq_pos) & self.bucket_mask) / Group::WIDTH; 36 ( 0.00%) probe_index(i) == probe_index(new_i) . } . . /// Sets a control byte to the hash, and possibly also the replicated control byte at . /// the end of the array. . #[inline] . unsafe fn set_ctrl_h2(&self, index: usize, hash: u64) { . self.set_ctrl(index, h2(hash)); . } -- line 1289 ---------------------------------------- -- line 1312 ---------------------------------------- . // replicate the buckets at the end of the trailing group. For example . // with 2 buckets and a group size of 4, the control bytes will look . // like this: . // . // Real | Replicated . // --------------------------------------------- . // | [A] | [B] | [EMPTY] | [EMPTY] | [A] | [B] | . // --------------------------------------------- 2,179,287 ( 0.13%) let index2 = ((index.wrapping_sub(Group::WIDTH)) & self.bucket_mask) + Group::WIDTH; . 726,429 ( 0.04%) *self.ctrl(index) = ctrl; 726,574 ( 0.04%) *self.ctrl(index2) = ctrl; . } . . /// Returns a pointer to a control byte. . #[inline] . unsafe fn ctrl(&self, index: usize) -> *mut u8 { . debug_assert!(index < self.num_ctrl_bytes()); . self.ctrl.as_ptr().add(index) . } . . #[inline] . fn buckets(&self) -> usize { 347,727 ( 0.02%) self.bucket_mask + 1 . } . . #[inline] . fn num_ctrl_bytes(&self) -> usize { 141,048 ( 0.01%) self.bucket_mask + 1 + Group::WIDTH . } . . #[inline] . fn is_empty_singleton(&self) -> bool { 1,132,506 ( 0.07%) self.bucket_mask == 0 . } . . #[allow(clippy::mut_mut)] . #[inline] . unsafe fn prepare_resize( . &self, . table_layout: TableLayout, . capacity: usize, . fallibility: Fallibility, . ) -> Result, TryReserveError> { . debug_assert!(self.items <= capacity); . . // Allocate and initialize the new table. 798 ( 0.00%) let mut new_table = RawTableInner::fallible_with_capacity( . self.alloc.clone(), . table_layout, . capacity, . fallibility, . )?; 64,713 ( 0.00%) new_table.growth_left -= self.items; . new_table.items = self.items; . . // The hash function may panic, in which case we simply free the new . // table without dropping any elements that may have been copied into . // it. . // . // This guard is also used to free the old table on success, see . // the comment at the bottom of this function. . Ok(guard(new_table, move |self_| { 29,972 ( 0.00%) if !self_.is_empty_singleton() { . self_.free_buckets(table_layout); . } . })) . } . . /// Reserves or rehashes to make room for `additional` more elements. . /// . /// This uses dynamic dispatch to reduce the amount of -- line 1383 ---------------------------------------- -- line 1388 ---------------------------------------- . &mut self, . additional: usize, . hasher: &dyn Fn(&mut Self, usize) -> u64, . fallibility: Fallibility, . layout: TableLayout, . drop: Option, . ) -> Result<(), TryReserveError> { . // Avoid `Option::ok_or_else` because it bloats LLVM IR. 59,953 ( 0.00%) let new_items = match self.items.checked_add(additional) { . Some(new_items) => new_items, . None => return Err(fallibility.capacity_overflow()), . }; 59,948 ( 0.00%) let full_capacity = bucket_mask_to_capacity(self.bucket_mask); 125,548 ( 0.01%) if new_items <= full_capacity / 2 { . // Rehash in-place without re-allocating if we have plenty of spare . // capacity that is locked up due to DELETED entries. . self.rehash_in_place(hasher, layout.size, drop); 4 ( 0.00%) Ok(()) . } else { . // Otherwise, conservatively resize to at least the next size up . // to avoid churning deletes into frequent rehashes. . self.resize_inner( 29,972 ( 0.00%) usize::max(new_items, full_capacity + 1), . hasher, . fallibility, . layout, . ) . } . } . . /// Allocates a new table of a different size and moves the contents of the -- line 1418 ---------------------------------------- -- line 1424 ---------------------------------------- . #[inline(always)] . unsafe fn resize_inner( . &mut self, . capacity: usize, . hasher: &dyn Fn(&mut Self, usize) -> u64, . fallibility: Fallibility, . layout: TableLayout, . ) -> Result<(), TryReserveError> { 1,907 ( 0.00%) let mut new_table = self.prepare_resize(layout, capacity, fallibility)?; . . // Copy all elements to the new table. . for i in 0..self.buckets() { 457,468 ( 0.03%) if !is_full(*self.ctrl(i)) { . continue; . } . . // This may panic. . let hash = hasher(self, i); . . // We can use a simpler version of insert() here since: . // - there are no DELETED entries. -- line 1444 ---------------------------------------- -- line 1454 ---------------------------------------- . } . . // We successfully copied all elements without panicking. Now replace . // self with the new table. The old table will have its memory freed but . // the items will not be dropped (since they have been moved into the . // new table). . mem::swap(self, &mut new_table); . 29,972 ( 0.00%) Ok(()) . } . . /// Rehashes the contents of the table in place (i.e. without changing the . /// allocation). . /// . /// If `hasher` panics then some the table's contents may be lost. . /// . /// This uses dynamic dispatch to reduce the amount of -- line 1470 ---------------------------------------- -- line 1496 ---------------------------------------- . } . self_.growth_left = bucket_mask_to_capacity(self_.bucket_mask) - self_.items; . }); . . // At this point, DELETED elements are elements that we haven't . // rehashed yet. Find them and re-insert them at their ideal . // position. . 'outer: for i in 0..guard.buckets() { 128 ( 0.00%) if *guard.ctrl(i) != DELETED { . continue; . } . . let i_p = guard.bucket_ptr(i, size_of); . . 'inner: loop { . // Hash the current item . let hash = hasher(*guard, i); -- line 1512 ---------------------------------------- -- line 1515 ---------------------------------------- . let new_i = guard.find_insert_slot(hash); . let new_i_p = guard.bucket_ptr(new_i, size_of); . . // Probing works by scanning through all of the control . // bytes in groups, which may not be aligned to the group . // size. If both the new and old position fall within the . // same unaligned group, then there is no benefit in moving . // it and we can just continue to the next item. 12 ( 0.00%) if likely(guard.is_in_same_group(i, new_i, hash)) { . guard.set_ctrl_h2(i, hash); . continue 'outer; . } . . // We are moving the current item to a new position. Write . // our H2 to the control byte of the new position. . let prev_ctrl = guard.replace_ctrl_h2(new_i, hash); . if prev_ctrl == EMPTY { -- line 1531 ---------------------------------------- -- line 1541 ---------------------------------------- . // swapped into the old slot. . debug_assert_eq!(prev_ctrl, DELETED); . ptr::swap_nonoverlapping(i_p, new_i_p, size_of); . continue 'inner; . } . } . } . 6 ( 0.00%) guard.growth_left = bucket_mask_to_capacity(guard.bucket_mask) - guard.items; . . mem::forget(guard); . } . . #[inline] . unsafe fn free_buckets(&mut self, table_layout: TableLayout) { . // Avoid `Option::unwrap_or_else` because it bloats LLVM IR. . let (layout, ctrl_offset) = match table_layout.calculate_layout_for(self.buckets()) { . Some(lco) => lco, . None => hint::unreachable_unchecked(), . }; . self.alloc.deallocate( 21,088 ( 0.00%) NonNull::new_unchecked(self.ctrl.as_ptr().sub(ctrl_offset)), . layout, . ); . } . . /// Marks all table buckets as empty without dropping their contents. . #[inline] . fn clear_no_drop(&mut self) { 4,261 ( 0.00%) if !self.is_empty_singleton() { . unsafe { . self.ctrl(0).write_bytes(EMPTY, self.num_ctrl_bytes()); . } . } 4,884 ( 0.00%) self.items = 0; 4,261 ( 0.00%) self.growth_left = bucket_mask_to_capacity(self.bucket_mask); . } . . #[inline] . unsafe fn erase(&mut self, index: usize) { . debug_assert!(is_full(*self.ctrl(index))); 44,167 ( 0.00%) let index_before = index.wrapping_sub(Group::WIDTH) & self.bucket_mask; . let empty_before = Group::load(self.ctrl(index_before)).match_empty(); . let empty_after = Group::load(self.ctrl(index)).match_empty(); . . // If we are inside a continuous block of Group::WIDTH full or deleted . // cells then a probe window may have seen a full block when trying to . // insert. We therefore need to keep that block non-empty so that . // lookups will continue searching to the next probe window. . // . // Note that in this context `leading_zeros` refers to the bytes at the . // end of a group, while `trailing_zeros` refers to the bytes at the . // beginning of a group. 176,668 ( 0.01%) let ctrl = if empty_before.leading_zeros() + empty_after.trailing_zeros() >= Group::WIDTH { . DELETED . } else { 218,690 ( 0.01%) self.growth_left += 1; . EMPTY . }; . self.set_ctrl(index, ctrl); 176,668 ( 0.01%) self.items -= 1; . } . } . . impl Clone for RawTable { 488 ( 0.00%) fn clone(&self) -> Self { 94 ( 0.00%) if self.table.is_empty_singleton() { . Self::new_in(self.table.alloc.clone()) . } else { . unsafe { . let mut new_table = ManuallyDrop::new( . // Avoid `Result::ok_or_else` because it bloats LLVM IR. . match Self::new_uninitialized( . self.table.alloc.clone(), . self.table.buckets(), -- line 1615 ---------------------------------------- -- line 1624 ---------------------------------------- . // We need to free the memory allocated for the new table. . new_table.free_buckets(); . }); . . // Return the newly created table. . ManuallyDrop::into_inner(new_table) . } . } 549 ( 0.00%) } . . fn clone_from(&mut self, source: &Self) { . if source.table.is_empty_singleton() { . *self = Self::new_in(self.table.alloc.clone()); . } else { . unsafe { . // First, drop all our elements without clearing the control bytes. . self.drop_elements(); -- line 1640 ---------------------------------------- -- line 1687 ---------------------------------------- . .table . .ctrl(0) . .copy_to_nonoverlapping(self.table.ctrl(0), self.table.num_ctrl_bytes()); . source . .data_start() . .copy_to_nonoverlapping(self.data_start(), self.table.buckets()); . . self.table.items = source.table.items; 54 ( 0.00%) self.table.growth_left = source.table.growth_left; . } . } . . impl RawTable { . /// Common code for clone and clone_from. Assumes `self.buckets() == source.buckets()`. . #[cfg_attr(feature = "inline-more", inline)] . unsafe fn clone_from_impl(&mut self, source: &Self, mut on_panic: impl FnMut(&mut Self)) { . // Copy the control bytes unchanged. We do this in a single pass -- line 1703 ---------------------------------------- -- line 1790 ---------------------------------------- . fn default() -> Self { . Self::new_in(Default::default()) . } . } . . #[cfg(feature = "nightly")] . unsafe impl<#[may_dangle] T, A: Allocator + Clone> Drop for RawTable { . #[cfg_attr(feature = "inline-more", inline)] 454,404 ( 0.03%) fn drop(&mut self) { 482,746 ( 0.03%) if !self.table.is_empty_singleton() { . unsafe { . self.drop_elements(); . self.free_buckets(); . } . } 531,844 ( 0.03%) } . } . #[cfg(not(feature = "nightly"))] . impl Drop for RawTable { . #[cfg_attr(feature = "inline-more", inline)] . fn drop(&mut self) { . if !self.table.is_empty_singleton() { . unsafe { . self.drop_elements(); -- line 1813 ---------------------------------------- -- line 1817 ---------------------------------------- . } . } . . impl IntoIterator for RawTable { . type Item = T; . type IntoIter = RawIntoIter; . . #[cfg_attr(feature = "inline-more", inline)] 3,800 ( 0.00%) fn into_iter(self) -> RawIntoIter { . unsafe { . let iter = self.iter(); . self.into_iter_from(iter) . } 4,750 ( 0.00%) } . } . . /// Iterator over a sub-range of a table. Unlike `RawIter` this iterator does . /// not track an item count. . pub(crate) struct RawIterRange { . // Mask of full buckets in the current group. Bits are cleared from this . // mask as each element is processed. . current_group: BitMask, -- line 1838 ---------------------------------------- -- line 1934 ---------------------------------------- . . impl Iterator for RawIterRange { . type Item = Bucket; . . #[cfg_attr(feature = "inline-more", inline)] . fn next(&mut self) -> Option> { . unsafe { . loop { 229,721 ( 0.01%) if let Some(index) = self.current_group.lowest_set_bit() { 43,008 ( 0.00%) self.current_group = self.current_group.remove_lowest_bit(); 74,822 ( 0.00%) return Some(self.data.next_n(index)); . } . 236,717 ( 0.01%) if self.next_ctrl >= self.end { . return None; . } . . // We might read past self.end up to the next group boundary, . // but this is fine because it only occurs on tables smaller . // than the group size where the trailing control bytes are all . // EMPTY. On larger tables self.end is guaranteed to be aligned . // to the group size (since tables are power-of-two sized). 4,248 ( 0.00%) self.current_group = Group::load_aligned(self.next_ctrl).match_full(); 7,064 ( 0.00%) self.data = self.data.next_n(Group::WIDTH); 5,294 ( 0.00%) self.next_ctrl = self.next_ctrl.add(Group::WIDTH); . } . } . } . . #[inline] . fn size_hint(&self) -> (usize, Option) { . // We don't have an item count, so just guess based on the range size. . ( -- line 1966 ---------------------------------------- -- line 2102 ---------------------------------------- . } . } else { . // We must have already iterated past the removed item. . } . } . } . . unsafe fn drop_elements(&mut self) { 561 ( 0.00%) if mem::needs_drop::() && self.len() != 0 { . for item in self { . item.drop(); . } . } . } . } . . impl Clone for RawIter { -- line 2118 ---------------------------------------- -- line 2124 ---------------------------------------- . } . } . } . . impl Iterator for RawIter { . type Item = Bucket; . . #[cfg_attr(feature = "inline-more", inline)] 45,855 ( 0.00%) fn next(&mut self) -> Option> { 93,296 ( 0.01%) if let Some(b) = self.iter.next() { 275,069 ( 0.02%) self.items -= 1; . Some(b) . } else { . // We don't check against items == 0 here to allow the . // compiler to optimize away the item count entirely if the . // iterator length is never queried. . debug_assert_eq!(self.items, 0); . None . } 91,710 ( 0.01%) } . . #[inline] . fn size_hint(&self) -> (usize, Option) { . (self.items, Some(self.items)) . } . } . . impl ExactSizeIterator for RawIter {} -- line 2151 ---------------------------------------- -- line 2177 ---------------------------------------- . T: Sync, . A: Sync, . { . } . . #[cfg(feature = "nightly")] . unsafe impl<#[may_dangle] T, A: Allocator + Clone> Drop for RawIntoIter { . #[cfg_attr(feature = "inline-more", inline)] 1,412 ( 0.00%) fn drop(&mut self) { . unsafe { . // Drop all remaining elements . self.iter.drop_elements(); . . // Free the table 7,638 ( 0.00%) if let Some((ptr, layout)) = self.allocation { . self.alloc.deallocate(ptr, layout); . } . } 130 ( 0.00%) } . } . #[cfg(not(feature = "nightly"))] . impl Drop for RawIntoIter { . #[cfg_attr(feature = "inline-more", inline)] . fn drop(&mut self) { . unsafe { . // Drop all remaining elements . self.iter.drop_elements(); -- line 2203 ---------------------------------------- -- line 2209 ---------------------------------------- . } . } . } . . impl Iterator for RawIntoIter { . type Item = T; . . #[cfg_attr(feature = "inline-more", inline)] 441 ( 0.00%) fn next(&mut self) -> Option { 192 ( 0.00%) unsafe { Some(self.iter.next()?.read()) } 882 ( 0.00%) } . . #[inline] . fn size_hint(&self) -> (usize, Option) { 3 ( 0.00%) self.iter.size_hint() . } . } . . impl ExactSizeIterator for RawIntoIter {} . impl FusedIterator for RawIntoIter {} . . /// Iterator which consumes elements without freeing the table storage. . pub struct RawDrain<'a, T, A: Allocator + Clone = Global> { -- line 2231 ---------------------------------------- -- line 2259 ---------------------------------------- . where . T: Sync, . A: Sync, . { . } . . impl Drop for RawDrain<'_, T, A> { . #[cfg_attr(feature = "inline-more", inline)] 56 ( 0.00%) fn drop(&mut self) { . unsafe { . // Drop all remaining elements. Note that this may panic. . self.iter.drop_elements(); . . // Reset the contents of the table now that all elements have been . // dropped. . self.table.clear_no_drop(); . . // Move the now empty table back to its original location. 7 ( 0.00%) self.orig_table . .as_ptr() . .copy_from_nonoverlapping(&*self.table, 1); . } 56 ( 0.00%) } . } . . impl Iterator for RawDrain<'_, T, A> { . type Item = T; . . #[cfg_attr(feature = "inline-more", inline)] . fn next(&mut self) -> Option { . unsafe { -- line 2289 ---------------------------------------- 9,434,904 ( 0.55%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_mir_dataflow/src/drop_flag_effects.rs -------------------------------------------------------------------------------- Ir -- line 48 ---------------------------------------- . // . // FIXME: we have to do something for moving slice patterns. . fn place_contents_drop_state_cannot_differ<'tcx>( . tcx: TyCtxt<'tcx>, . body: &Body<'tcx>, . place: mir::Place<'tcx>, . ) -> bool { . let ty = place.ty(body, tcx).ty; 627,760 ( 0.04%) match ty.kind() { . ty::Array(..) => { . debug!( . "place_contents_drop_state_cannot_differ place: {:?} ty: {:?} => false", . place, ty . ); . false . } . ty::Slice(..) | ty::Ref(..) | ty::RawPtr(..) => { . debug!( . "place_contents_drop_state_cannot_differ place: {:?} ty: {:?} refd => true", . place, ty . ); . true . } 383,337 ( 0.02%) ty::Adt(def, _) if (def.has_dtor(tcx) && !def.is_box()) || def.is_union() => { . debug!( . "place_contents_drop_state_cannot_differ place: {:?} ty: {:?} Drop => true", . place, ty . ); . true . } . _ => false, . } -- line 79 ---------------------------------------- -- line 83 ---------------------------------------- . tcx: TyCtxt<'tcx>, . body: &Body<'tcx>, . move_data: &MoveData<'tcx>, . lookup_result: LookupResult, . each_child: F, . ) where . F: FnMut(MovePathIndex), . { 3,486 ( 0.00%) match lookup_result { . LookupResult::Parent(..) => { . // access to untracked value - do not touch children . } . LookupResult::Exact(e) => on_all_children_bits(tcx, body, move_data, e, each_child), . } . } . . pub fn on_all_children_bits<'tcx, F>( -- line 99 ---------------------------------------- -- line 100 ---------------------------------------- . tcx: TyCtxt<'tcx>, . body: &Body<'tcx>, . move_data: &MoveData<'tcx>, . move_path_index: MovePathIndex, . mut each_child: F, . ) where . F: FnMut(MovePathIndex), . { 863,512 ( 0.05%) fn is_terminal_path<'tcx>( . tcx: TyCtxt<'tcx>, . body: &Body<'tcx>, . move_data: &MoveData<'tcx>, . path: MovePathIndex, . ) -> bool { 215,878 ( 0.01%) place_contents_drop_state_cannot_differ(tcx, body, move_data.move_paths[path].place) 863,512 ( 0.05%) } . 1,007,094 ( 0.06%) fn on_all_children_bits<'tcx, F>( . tcx: TyCtxt<'tcx>, . body: &Body<'tcx>, . move_data: &MoveData<'tcx>, . move_path_index: MovePathIndex, . each_child: &mut F, . ) where . F: FnMut(MovePathIndex), . { 50,691 ( 0.00%) each_child(move_path_index); . 755,573 ( 0.04%) if is_terminal_path(tcx, body, move_data, move_path_index) { . return; . } . 98,002 ( 0.01%) let mut next_child_index = move_data.move_paths[move_path_index].first_child; 196,986 ( 0.01%) while let Some(child_index) = next_child_index { 1,872 ( 0.00%) on_all_children_bits(tcx, body, move_data, child_index, each_child); 312 ( 0.00%) next_child_index = move_data.move_paths[child_index].next_sibling; . } 821,390 ( 0.05%) } 643,650 ( 0.04%) on_all_children_bits(tcx, body, move_data, move_path_index, &mut each_child); . } . . pub fn on_all_drop_children_bits<'tcx, F>( . tcx: TyCtxt<'tcx>, . body: &Body<'tcx>, . ctxt: &MoveDataParamEnv<'tcx>, . path: MovePathIndex, . mut each_child: F, -- line 146 ---------------------------------------- -- line 156 ---------------------------------------- . if erased_ty.needs_drop(tcx, ctxt.param_env) { . each_child(child); . } else { . debug!("on_all_drop_children_bits - skipping") . } . }) . } . 4,592 ( 0.00%) pub fn drop_flag_effects_for_function_entry<'tcx, F>( . tcx: TyCtxt<'tcx>, . body: &Body<'tcx>, . ctxt: &MoveDataParamEnv<'tcx>, . mut callback: F, . ) where . F: FnMut(MovePathIndex, DropFlagState), . { . let move_data = &ctxt.move_data; 416 ( 0.00%) for arg in body.args_iter() { 996 ( 0.00%) let place = mir::Place::from(arg); 1,494 ( 0.00%) let lookup_result = move_data.rev_lookup.find(place.as_ref()); . on_lookup_result_bits(tcx, body, move_data, lookup_result, |mpi| { 498 ( 0.00%) callback(mpi, DropFlagState::Present) . }); . } 3,328 ( 0.00%) } . 750,348 ( 0.04%) pub fn drop_flag_effects_for_location<'tcx, F>( . tcx: TyCtxt<'tcx>, . body: &Body<'tcx>, . ctxt: &MoveDataParamEnv<'tcx>, . loc: Location, . mut callback: F, . ) where . F: FnMut(MovePathIndex, DropFlagState), . { . let move_data = &ctxt.move_data; . debug!("drop_flag_effects_for_location({:?})", loc); . . // first, move out of the RHS 30,762 ( 0.00%) for mi in &move_data.loc_map[loc] { 211,182 ( 0.01%) let path = mi.move_path_index(move_data); . debug!("moving out of path {:?}", move_data.move_paths[path]); . 55,456 ( 0.00%) on_all_children_bits(tcx, body, move_data, path, |mpi| callback(mpi, DropFlagState::Absent)) . } . . debug!("drop_flag_effects: assignment for location({:?})", loc); . 50,691 ( 0.00%) for_location_inits(tcx, body, move_data, loc, |mpi| callback(mpi, DropFlagState::Present)); 584,944 ( 0.03%) } . . pub fn for_location_inits<'tcx, F>( . tcx: TyCtxt<'tcx>, . body: &Body<'tcx>, . move_data: &MoveData<'tcx>, . loc: Location, . mut callback: F, . ) where . F: FnMut(MovePathIndex), . { 30,762 ( 0.00%) for ii in &move_data.init_loc_map[loc] { 208,356 ( 0.01%) let init = move_data.inits[*ii]; 107,502 ( 0.01%) match init.kind { . InitKind::Deep => { . let path = init.path; . . on_all_children_bits(tcx, body, move_data, path, &mut callback) . } . InitKind::Shallow => { . let mpi = init.path; . callback(mpi); -- line 226 ---------------------------------------- -- line 230 ---------------------------------------- . } . } . . /// Calls `handle_inactive_variant` for each descendant move path of `enum_place` that contains a . /// `Downcast` to a variant besides the `active_variant`. . /// . /// NOTE: If there are no move paths corresponding to an inactive variant, . /// `handle_inactive_variant` will not be called for that variant. 5,736 ( 0.00%) pub(crate) fn on_all_inactive_variants<'tcx>( . tcx: TyCtxt<'tcx>, . body: &mir::Body<'tcx>, . move_data: &MoveData<'tcx>, . enum_place: mir::Place<'tcx>, . active_variant: VariantIdx, . mut handle_inactive_variant: impl FnMut(MovePathIndex), . ) { 2,390 ( 0.00%) let enum_mpi = match move_data.rev_lookup.find(enum_place.as_ref()) { . LookupResult::Exact(mpi) => mpi, . LookupResult::Parent(_) => return, . }; . . let enum_path = &move_data.move_paths[enum_mpi]; 1,013 ( 0.00%) for (variant_mpi, variant_path) in enum_path.children(&move_data.move_paths) { . // Because of the way we build the `MoveData` tree, each child should have exactly one more . // projection than `enum_place`. This additional projection must be a downcast since the . // base is an enum. 8 ( 0.00%) let (downcast, base_proj) = variant_path.place.projection.split_last().unwrap(); 32 ( 0.00%) assert_eq!(enum_place.projection.len(), base_proj.len()); . 24 ( 0.00%) let variant_idx = match *downcast { . mir::ProjectionElem::Downcast(_, idx) => idx, . _ => unreachable!(), . }; . 8 ( 0.00%) if variant_idx != active_variant { . on_all_children_bits(tcx, body, move_data, variant_mpi, |mpi| { 8 ( 0.00%) handle_inactive_variant(mpi) . }); . } . } 3,824 ( 0.00%) } 729,248 ( 0.04%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/../../stdarch/crates/core_arch/src/x86/sse2.rs -------------------------------------------------------------------------------- Ir -- line 94 ---------------------------------------- . /// Adds packed 32-bit integers in `a` and `b`. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_add_epi32) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(paddd))] . #[stable(feature = "simd_x86", since = "1.27.0")] . pub unsafe fn _mm_add_epi32(a: __m128i, b: __m128i) -> __m128i { 17 ( 0.00%) transmute(simd_add(a.as_i32x4(), b.as_i32x4())) . } . . /// Adds packed 64-bit integers in `a` and `b`. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_add_epi64) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(paddq))] -- line 110 ---------------------------------------- -- line 767 ---------------------------------------- . /// `b`. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_or_si128) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(orps))] . #[stable(feature = "simd_x86", since = "1.27.0")] . pub unsafe fn _mm_or_si128(a: __m128i, b: __m128i) -> __m128i { 4 ( 0.00%) simd_or(a, b) . } . . /// Computes the bitwise XOR of 128 bits (representing integer data) in `a` and . /// `b`. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_xor_si128) . #[inline] . #[target_feature(enable = "sse2")] -- line 783 ---------------------------------------- -- line 790 ---------------------------------------- . /// Compares packed 8-bit integers in `a` and `b` for equality. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_cmpeq_epi8) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(pcmpeqb))] . #[stable(feature = "simd_x86", since = "1.27.0")] . pub unsafe fn _mm_cmpeq_epi8(a: __m128i, b: __m128i) -> __m128i { 329,193 ( 0.02%) transmute::(simd_eq(a.as_i8x16(), b.as_i8x16())) . } . . /// Compares packed 16-bit integers in `a` and `b` for equality. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_cmpeq_epi16) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(pcmpeqw))] -- line 806 ---------------------------------------- -- line 823 ---------------------------------------- . /// Compares packed 8-bit integers in `a` and `b` for greater-than. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_cmpgt_epi8) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(pcmpgtb))] . #[stable(feature = "simd_x86", since = "1.27.0")] . pub unsafe fn _mm_cmpgt_epi8(a: __m128i, b: __m128i) -> __m128i { 8 ( 0.00%) transmute::(simd_gt(a.as_i8x16(), b.as_i8x16())) . } . . /// Compares packed 16-bit integers in `a` and `b` for greater-than. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_cmpgt_epi16) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(pcmpgtw))] -- line 839 ---------------------------------------- -- line 856 ---------------------------------------- . /// Compares packed 8-bit integers in `a` and `b` for less-than. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_cmplt_epi8) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(pcmpgtb))] . #[stable(feature = "simd_x86", since = "1.27.0")] . pub unsafe fn _mm_cmplt_epi8(a: __m128i, b: __m128i) -> __m128i { 38,734 ( 0.00%) transmute::(simd_lt(a.as_i8x16(), b.as_i8x16())) . } . . /// Compares packed 16-bit integers in `a` and `b` for less-than. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_cmplt_epi16) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(pcmpgtw))] -- line 872 ---------------------------------------- -- line 1174 ---------------------------------------- . /// `mem_addr` must be aligned on a 16-byte boundary. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_load_si128) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(movaps))] . #[stable(feature = "simd_x86", since = "1.27.0")] . pub unsafe fn _mm_load_si128(mem_addr: *const __m128i) -> __m128i { 111,034 ( 0.01%) *mem_addr . } . . /// Loads 128-bits of integer data from memory into a new vector. . /// . /// `mem_addr` does not need to be aligned on any particular boundary. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_loadu_si128) . #[inline] -- line 1190 ---------------------------------------- -- line 1224 ---------------------------------------- . /// `mem_addr` must be aligned on a 16-byte boundary. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_store_si128) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(movaps))] . #[stable(feature = "simd_x86", since = "1.27.0")] . pub unsafe fn _mm_store_si128(mem_addr: *mut __m128i, a: __m128i) { 4 ( 0.00%) *mem_addr = a; . } . . /// Stores 128-bits of integer data from `a` into memory. . /// . /// `mem_addr` does not need to be aligned on any particular boundary. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_storeu_si128) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(movups))] // FIXME movdqu expected . #[stable(feature = "simd_x86", since = "1.27.0")] . pub unsafe fn _mm_storeu_si128(mem_addr: *mut __m128i, a: __m128i) { 16 ( 0.00%) storeudq(mem_addr as *mut i8, a); . } . . /// Stores the lower 64-bit integer `a` to a memory location. . /// . /// `mem_addr` does not need to be aligned on any particular boundary. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_storel_epi64) . #[inline] -- line 1253 ---------------------------------------- -- line 1373 ---------------------------------------- . /// Returns a mask of the most significant bit of each element in `a`. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_movemask_epi8) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(pmovmskb))] . #[stable(feature = "simd_x86", since = "1.27.0")] . pub unsafe fn _mm_movemask_epi8(a: __m128i) -> i32 { 17,753,459 ( 1.03%) pmovmskb(a.as_i8x16()) . } . . /// Shuffles 32-bit integers in `a` using the control in `IMM8`. . /// . /// [Intel's documentation](https://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=_mm_shuffle_epi32) . #[inline] . #[target_feature(enable = "sse2")] . #[cfg_attr(test, assert_instr(pshufd, IMM8 = 9))] -- line 1389 ---------------------------------------- -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_typeck/src/check/expr.rs -------------------------------------------------------------------------------- Ir -- line 56 ---------------------------------------- . } . . pub fn check_expr_has_type_or_error( . &self, . expr: &'tcx hir::Expr<'tcx>, . expected: Ty<'tcx>, . extend_err: impl Fn(&mut DiagnosticBuilder<'_>), . ) -> Ty<'tcx> { 203 ( 0.00%) self.check_expr_meets_expectation_or_error(expr, ExpectHasType(expected), extend_err) . } . . fn check_expr_meets_expectation_or_error( . &self, . expr: &'tcx hir::Expr<'tcx>, . expected: Expectation<'tcx>, . extend_err: impl Fn(&mut DiagnosticBuilder<'_>), . ) -> Ty<'tcx> { . let expected_ty = expected.to_option(&self).unwrap_or(self.tcx.types.bool); . let mut ty = self.check_expr_with_expectation(expr, expected); . . // While we don't allow *arbitrary* coercions here, we *do* allow . // coercions from ! to `expected`. 275 ( 0.00%) if ty.is_never() { . assert!( . !self.typeck_results.borrow().adjustments().contains_key(expr.hir_id), . "expression with never type wound up being adjusted" . ); . let adj_ty = self.next_ty_var(TypeVariableOrigin { . kind: TypeVariableOriginKind::AdjustmentType, . span: expr.span, . }); . self.apply_adjustments( . expr, . vec![Adjustment { kind: Adjust::NeverToAny, target: adj_ty }], . ); . ty = adj_ty; . } . 2,159 ( 0.00%) if let Some(mut err) = self.demand_suptype_diag(expr.span, expected_ty, ty) { . let expr = expr.peel_drop_temps(); . self.suggest_deref_ref_or_into(&mut err, expr, expected_ty, ty, None); . extend_err(&mut err); . err.emit(); . } . ty . } . 151,335 ( 0.01%) pub(super) fn check_expr_coercable_to_type( . &self, . expr: &'tcx hir::Expr<'tcx>, . expected: Ty<'tcx>, . expected_ty_expr: Option<&'tcx hir::Expr<'tcx>>, . ) -> Ty<'tcx> { . let ty = self.check_expr_with_hint(expr, expected); . // checks don't need two phase . self.demand_coerce(expr, ty, expected, expected_ty_expr, AllowTwoPhase::No) 117,705 ( 0.01%) } . . pub(super) fn check_expr_with_hint( . &self, . expr: &'tcx hir::Expr<'tcx>, . expected: Ty<'tcx>, . ) -> Ty<'tcx> { 195 ( 0.00%) self.check_expr_with_expectation(expr, ExpectHasType(expected)) . } . . fn check_expr_with_expectation_and_needs( . &self, . expr: &'tcx hir::Expr<'tcx>, . expected: Expectation<'tcx>, . needs: Needs, . ) -> Ty<'tcx> { . let ty = self.check_expr_with_expectation(expr, expected); . . // If the expression is used in a place whether mutable place is required . // e.g. LHS of assignment, perform the conversion. 206 ( 0.00%) if let Needs::MutPlace = needs { 364 ( 0.00%) self.convert_place_derefs_to_mutable(expr); . } . . ty . } . . pub(super) fn check_expr(&self, expr: &'tcx hir::Expr<'tcx>) -> Ty<'tcx> { . self.check_expr_with_expectation(expr, NoExpectation) . } -- line 141 ---------------------------------------- -- line 159 ---------------------------------------- . /// that there are actually multiple representations for `Error`, so avoid . /// that when err needs to be handled differently. . #[instrument(skip(self, expr), level = "debug")] . pub(super) fn check_expr_with_expectation( . &self, . expr: &'tcx hir::Expr<'tcx>, . expected: Expectation<'tcx>, . ) -> Ty<'tcx> { 145,406 ( 0.01%) self.check_expr_with_expectation_and_args(expr, expected, &[]) . } . . /// Same as `check_expr_with_expectation`, but allows us to pass in the arguments of a . /// `ExprKind::Call` when evaluating its callee when it is an `ExprKind::Path`. 341,601 ( 0.02%) pub(super) fn check_expr_with_expectation_and_args( . &self, . expr: &'tcx hir::Expr<'tcx>, . expected: Expectation<'tcx>, . args: &'tcx [hir::Expr<'tcx>], . ) -> Ty<'tcx> { 105,108 ( 0.01%) if self.tcx().sess.verbose() { . // make this code only run with -Zverbose because it is probably slow . if let Ok(lint_str) = self.tcx.sess.source_map().span_to_snippet(expr.span) { . if !lint_str.contains('\n') { . debug!("expr text: {}", lint_str); . } else { . let mut lines = lint_str.lines(); . if let Some(line0) = lines.next() { . let remaining_lines = lines.count(); -- line 186 ---------------------------------------- -- line 189 ---------------------------------------- . } . } . } . } . . // True if `expr` is a `Try::from_ok(())` that is a result of desugaring a try block . // without the final expr (e.g. `try { return; }`). We don't want to generate an . // unreachable_code lint for it since warnings for autogenerated code are confusing. 52,554 ( 0.00%) let is_try_block_generated_unit_expr = match expr.kind { 1,550 ( 0.00%) ExprKind::Call(_, args) if expr.span.is_desugaring(DesugaringKind::TryBlock) => { . args.len() == 1 && args[0].span.is_desugaring(DesugaringKind::TryBlock) . } . . _ => false, . }; . . // Warn for expressions after diverging siblings. . if !is_try_block_generated_unit_expr { 183,939 ( 0.01%) self.warn_if_unreachable(expr.hir_id, expr.span, "expression"); . } . . // Hide the outer diverging and has_errors flags. . let old_diverges = self.diverges.replace(Diverges::Maybe); . let old_has_errors = self.has_errors.replace(false); . 65,494 ( 0.00%) let ty = ensure_sufficient_stack(|| match &expr.kind { . hir::ExprKind::Path( . qpath @ hir::QPath::Resolved(..) | qpath @ hir::QPath::TypeRelative(..), 38,724 ( 0.00%) ) => self.check_expr_path(qpath, expr, args), 99,115 ( 0.01%) _ => self.check_expr_kind(expr, expected), . }); . . // Warn for non-block expressions with diverging children. 105,108 ( 0.01%) match expr.kind { . ExprKind::Block(..) . | ExprKind::If(..) . | ExprKind::Let(..) . | ExprKind::Loop(..) . | ExprKind::Match(..) => {} . // If `expr` is a result of desugaring the try block and is an ok-wrapped . // diverging expression (e.g. it arose from desugaring of `try { return }`), . // we skip issuing a warning because it is autogenerated code. 1,550 ( 0.00%) ExprKind::Call(..) if expr.span.is_desugaring(DesugaringKind::TryBlock) => {} 1,550 ( 0.00%) ExprKind::Call(callee, _) => self.warn_if_unreachable(expr.hir_id, callee.span, "call"), 218 ( 0.00%) ExprKind::MethodCall(segment, ..) => { 654 ( 0.00%) self.warn_if_unreachable(expr.hir_id, segment.ident.span, "call") . } 150,186 ( 0.01%) _ => self.warn_if_unreachable(expr.hir_id, expr.span, "expression"), . } . . // Any expression that produces a value of type `!` must have diverged 26,277 ( 0.00%) if ty.is_never() { 135 ( 0.00%) self.diverges.set(self.diverges.get() | Diverges::always(expr.span)); . } . . // Record the type, which applies it effects. . // We need to do this after the warning above, so that . // we don't warn for the diverging expression itself. 131,385 ( 0.01%) self.write_ty(expr.hir_id, ty); . . // Combine the diverging and has_error flags. . self.diverges.set(self.diverges.get() | old_diverges); 26,277 ( 0.00%) self.has_errors.set(self.has_errors.get() | old_has_errors); . . debug!("type of {} is...", self.tcx.hir().node_to_string(expr.hir_id)); . debug!("... {:?}, expected is {:?}", ty, expected); . . ty 236,493 ( 0.01%) } . 384,212 ( 0.02%) #[instrument(skip(self, expr), level = "debug")] . fn check_expr_kind( . &self, . expr: &'tcx hir::Expr<'tcx>, . expected: Expectation<'tcx>, . ) -> Ty<'tcx> { . trace!("expr={:#?}", expr); . 19,823 ( 0.00%) let tcx = self.tcx; 118,970 ( 0.01%) match expr.kind { . ExprKind::Box(subexpr) => self.check_expr_box(subexpr, expected), . ExprKind::Lit(ref lit) => self.check_lit(&lit, expected), 3,220 ( 0.00%) ExprKind::Binary(op, lhs, rhs) => self.check_binop(expr, op, lhs, rhs), 342 ( 0.00%) ExprKind::Assign(lhs, rhs, ref span) => { . self.check_expr_assign(expr, expected, lhs, rhs, span) . } 154 ( 0.00%) ExprKind::AssignOp(op, lhs, rhs) => self.check_binop_assign(expr, op, lhs, rhs), 456 ( 0.00%) ExprKind::Unary(unop, oprnd) => self.check_expr_unary(unop, oprnd, expected, expr), 1,458 ( 0.00%) ExprKind::AddrOf(kind, mutbl, oprnd) => { . self.check_expr_addr_of(kind, mutbl, oprnd, expected, expr) . } 32 ( 0.00%) ExprKind::Path(QPath::LangItem(lang_item, _, hir_id)) => { . self.check_lang_item_path(lang_item, expr, hir_id) . } . ExprKind::Path(ref qpath) => self.check_expr_path(qpath, expr, &[]), . ExprKind::InlineAsm(asm) => self.check_expr_asm(asm), . ExprKind::Break(destination, ref expr_opt) => { 128 ( 0.00%) self.check_expr_break(destination, expr_opt.as_deref(), expr) . } . ExprKind::Continue(destination) => { 13 ( 0.00%) if destination.target_id.is_ok() { 26 ( 0.00%) tcx.types.never . } else { . // There was an error; make type-check fail. . tcx.ty_error() . } . } . ExprKind::Ret(ref expr_opt) => self.check_expr_return(expr_opt.as_deref(), expr), 12 ( 0.00%) ExprKind::Let(let_expr) => self.check_expr_let(let_expr), 16 ( 0.00%) ExprKind::Loop(body, _, source, _) => { . self.check_expr_loop(body, source, expected, expr) . } 282 ( 0.00%) ExprKind::Match(discrim, arms, match_src) => { 658 ( 0.00%) self.check_match(expr, &discrim, arms, expected, match_src) . } 66 ( 0.00%) ExprKind::Closure(capture, decl, body_id, _, gen) => { 264 ( 0.00%) self.check_expr_closure(expr, capture, &decl, body_id, gen, expected) . } 5,357 ( 0.00%) ExprKind::Block(body, _) => self.check_block_with_expected(&body, expected), 2,480 ( 0.00%) ExprKind::Call(callee, args) => self.check_call(expr, &callee, args, expected), 218 ( 0.00%) ExprKind::MethodCall(segment, args, _) => { . self.check_method_call(expr, segment, args, expected) . } 78 ( 0.00%) ExprKind::Cast(e, t) => self.check_expr_cast(e, t, expr), . ExprKind::Type(e, t) => { . let ty = self.to_ty_saving_user_provided_ty(&t); . self.check_expr_eq_type(&e, ty); . ty . } 585 ( 0.00%) ExprKind::If(cond, then_expr, opt_else_expr) => { 117 ( 0.00%) self.check_then_else(cond, then_expr, opt_else_expr, expr.span, expected) . } 111 ( 0.00%) ExprKind::DropTemps(e) => self.check_expr_with_expectation(e, expected), 26 ( 0.00%) ExprKind::Array(args) => self.check_expr_array(args, expected, expr), . ExprKind::ConstBlock(ref anon_const) => { . self.check_expr_const_block(anon_const, expected, expr) . } . ExprKind::Repeat(element, ref count) => { . self.check_expr_repeat(element, count, expected, expr) . } 17,118 ( 0.00%) ExprKind::Tup(elts) => self.check_expr_tuple(elts, expected, expr), 205 ( 0.00%) ExprKind::Struct(qpath, fields, ref base_expr) => { . self.check_expr_struct(expr, expected, qpath, fields, base_expr) . } 2,639 ( 0.00%) ExprKind::Field(base, field) => self.check_field(expr, &base, field), 162 ( 0.00%) ExprKind::Index(base, idx) => self.check_expr_index(base, idx, expr), . ExprKind::Yield(value, ref src) => self.check_expr_yield(value, expr, src), . hir::ExprKind::Err => tcx.ty_error(), . } . } . . fn check_expr_box(&self, expr: &'tcx hir::Expr<'tcx>, expected: Expectation<'tcx>) -> Ty<'tcx> { . let expected_inner = expected.to_option(self).map_or(NoExpectation, |ty| match ty.kind() { . ty::Adt(def, _) if def.is_box() => Expectation::rvalue_hint(self, ty.boxed_ty()), -- line 342 ---------------------------------------- -- line 350 ---------------------------------------- . fn check_expr_unary( . &self, . unop: hir::UnOp, . oprnd: &'tcx hir::Expr<'tcx>, . expected: Expectation<'tcx>, . expr: &'tcx hir::Expr<'tcx>, . ) -> Ty<'tcx> { . let tcx = self.tcx; 152 ( 0.00%) let expected_inner = match unop { . hir::UnOp::Not | hir::UnOp::Neg => expected, . hir::UnOp::Deref => NoExpectation, . }; 304 ( 0.00%) let mut oprnd_t = self.check_expr_with_expectation(&oprnd, expected_inner); . 152 ( 0.00%) if !oprnd_t.references_error() { 1,064 ( 0.00%) oprnd_t = self.structurally_resolved_type(expr.span, oprnd_t); 314 ( 0.00%) match unop { . hir::UnOp::Deref => { . if let Some(ty) = self.lookup_derefing(expr, oprnd, oprnd_t) { . oprnd_t = ty; . } else { . let mut err = type_error_struct!( . tcx.sess, . expr.span, . oprnd_t, -- line 374 ---------------------------------------- -- line 382 ---------------------------------------- . { . tcx.sess.parse_sess.expr_parentheses_needed(&mut err, *sp); . } . err.emit(); . oprnd_t = tcx.ty_error(); . } . } . hir::UnOp::Not => { 20 ( 0.00%) let result = self.check_user_unop(expr, oprnd_t, unop); . // If it's builtin, we can reuse the type, this helps inference. 30 ( 0.00%) if !(oprnd_t.is_integral() || *oprnd_t.kind() == ty::Bool) { . oprnd_t = result; . } . } . hir::UnOp::Neg => { . let result = self.check_user_unop(expr, oprnd_t, unop); . // If it's builtin, we can reuse the type, this helps inference. . if !oprnd_t.is_numeric() { . oprnd_t = result; -- line 400 ---------------------------------------- -- line 409 ---------------------------------------- . &self, . kind: hir::BorrowKind, . mutbl: hir::Mutability, . oprnd: &'tcx hir::Expr<'tcx>, . expected: Expectation<'tcx>, . expr: &'tcx hir::Expr<'tcx>, . ) -> Ty<'tcx> { . let hint = expected.only_has_type(self).map_or(NoExpectation, |ty| { 550 ( 0.00%) match ty.kind() { . ty::Ref(_, ty, _) | ty::RawPtr(ty::TypeAndMut { ty, .. }) => { 408 ( 0.00%) if oprnd.is_syntactic_place_expr() { . // Places may legitimately have unsized types. . // For example, dereferences of a fat pointer and . // the last field of a struct can be unsized. . ExpectHasType(ty) . } else { 168 ( 0.00%) Expectation::rvalue_hint(self, ty) . } . } . _ => NoExpectation, . } 330 ( 0.00%) }); . let ty = . self.check_expr_with_expectation_and_needs(&oprnd, hint, Needs::maybe_mut_place(mutbl)); . . let tm = ty::TypeAndMut { ty, mutbl }; 162 ( 0.00%) match kind { 162 ( 0.00%) _ if tm.ty.references_error() => self.tcx.ty_error(), . hir::BorrowKind::Raw => { . self.check_named_place_expr(oprnd); . self.tcx.mk_ptr(tm) . } . hir::BorrowKind::Ref => { . // Note: at this point, we cannot say what the best lifetime . // is to use for resulting pointer. We want to use the . // shortest lifetime possible so as to avoid spurious borrowck -- line 444 ---------------------------------------- -- line 448 ---------------------------------------- . // type inference is complete. . // . // Therefore, here we simply generate a region variable. The . // region inferencer will then select a suitable value. . // Finally, borrowck will infer the value of the region again, . // this time with enough precision to check that the value . // whose address was taken can actually be made to live as long . // as it needs to live. 810 ( 0.00%) let region = self.next_region_var(infer::AddrOfRegion(expr.span)); 162 ( 0.00%) self.tcx.mk_ref(region, tm) . } . } . } . . /// Does this expression refer to a place that either: . /// * Is based on a local or static. . /// * Contains a dereference . /// Note that the adjustments for the children of `expr` should already -- line 465 ---------------------------------------- -- line 489 ---------------------------------------- . } . . fn check_lang_item_path( . &self, . lang_item: hir::LangItem, . expr: &'tcx hir::Expr<'tcx>, . hir_id: Option, . ) -> Ty<'tcx> { 192 ( 0.00%) self.resolve_lang_item_path(lang_item, expr.span, expr.hir_id, hir_id).1 . } . 70,994 ( 0.00%) pub(crate) fn check_expr_path( . &self, . qpath: &'tcx hir::QPath<'tcx>, . expr: &'tcx hir::Expr<'tcx>, . args: &'tcx [hir::Expr<'tcx>], . ) -> Ty<'tcx> { 6,454 ( 0.00%) let tcx = self.tcx; 70,994 ( 0.00%) let (res, opt_ty, segs) = 64,540 ( 0.00%) self.resolve_ty_and_res_fully_qualified_call(qpath, expr.hir_id, expr.span); 36,638 ( 0.00%) let ty = match res { . Res::Err => { . self.set_tainted_by_errors(); . tcx.ty_error() . } . Res::Def(DefKind::Ctor(_, CtorKind::Fictive), _) => { . report_unexpected_variant_res(tcx, res, expr.span); . tcx.ty_error() . } 116,172 ( 0.01%) _ => self.instantiate_value_path(segs, opt_ty, res, expr.span, expr.hir_id).0, . }; . 19,362 ( 0.00%) if let ty::FnDef(..) = ty.kind() { 894 ( 0.00%) let fn_sig = ty.fn_sig(tcx); 1,192 ( 0.00%) if !tcx.features().unsized_fn_params { . // We want to remove some Sized bounds from std functions, . // but don't want to expose the removal to stable Rust. . // i.e., we don't want to allow . // . // ```rust . // drop as fn(str); . // ``` . // . // to work in stable even if the Sized bound on `drop` is relaxed. . for i in 0..fn_sig.inputs().skip_binder().len() { . // We just want to check sizedness, so instead of introducing . // placeholder lifetimes with probing, we just replace higher lifetimes . // with fresh vars. 429 ( 0.00%) let span = args.get(i).map(|a| a.span).unwrap_or(expr.span); . let input = self . .replace_bound_vars_with_fresh_vars( . span, . infer::LateBoundRegionConversionTime::FnCall, . fn_sig.input(i), . ) . .0; 1,740 ( 0.00%) self.require_type_is_sized_deferred( . input, . span, 1,305 ( 0.00%) traits::SizedArgumentType(None), . ); . } . } . // Here we want to prevent struct constructors from returning unsized types. . // There were two cases this happened: fn pointer coercion in stable . // and usual function call in presence of unsized_locals. . // Also, as we just want to check sizedness, instead of introducing . // placeholder lifetimes with probing, we just replace higher lifetimes -- line 556 ---------------------------------------- -- line 557 ---------------------------------------- . // with fresh vars. . let output = self . .replace_bound_vars_with_fresh_vars( . expr.span, . infer::LateBoundRegionConversionTime::FnCall, . fn_sig.output(), . ) . .0; 1,788 ( 0.00%) self.require_type_is_sized_deferred(output, expr.span, traits::SizedReturnType); . } . . // We always require that the type provided as the value for . // a type parameter outlives the moment of instantiation. 25,816 ( 0.00%) let substs = self.typeck_results.borrow().node_substs(expr.hir_id); . self.add_wf_bounds(substs, expr); . . ty 51,632 ( 0.00%) } . . fn check_expr_break( . &self, . destination: hir::Destination, . expr_opt: Option<&'tcx hir::Expr<'tcx>>, . expr: &'tcx hir::Expr<'tcx>, . ) -> Ty<'tcx> { 32 ( 0.00%) let tcx = self.tcx; 192 ( 0.00%) if let Ok(target_id) = destination.target_id { . let (e_ty, cause); 96 ( 0.00%) if let Some(e) = expr_opt { . // If this is a break with a value, we need to type-check . // the expression. Get an expected type from the loop context. . let opt_coerce_to = { . // We should release `enclosing_breakables` before the `check_expr_with_hint` . // below, so can't move this block of code to the enclosing scope and share . // `ctxt` with the second `encloding_breakables` borrow below. . let mut enclosing_breakables = self.enclosing_breakables.borrow_mut(); . match enclosing_breakables.opt_find_breakable(target_id) { -- line 593 ---------------------------------------- -- line 609 ---------------------------------------- . . // Recurse without `enclosing_breakables` borrowed. . e_ty = self.check_expr_with_hint(e, coerce_to); . cause = self.misc(e.span); . } else { . // Otherwise, this is a break *without* a value. That's . // always legal, and is equivalent to `break ()`. . e_ty = tcx.mk_unit(); 96 ( 0.00%) cause = self.misc(expr.span); . } . . // Now that we have type-checked `expr_opt`, borrow . // the `enclosing_loops` field and let's coerce the . // type of `expr_opt` into what is expected. . let mut enclosing_breakables = self.enclosing_breakables.borrow_mut(); 160 ( 0.00%) let ctxt = match enclosing_breakables.opt_find_breakable(target_id) { . Some(ctxt) => ctxt, . None => { . // Avoid ICE when `break` is inside a closure (#65383). . return tcx.ty_error_with_message( . expr.span, . "break was outside loop, but no error was emitted", . ); . } . }; . 64 ( 0.00%) if let Some(ref mut coerce) = ctxt.coerce { . if let Some(ref e) = expr_opt { . coerce.coerce(self, &cause, e, e_ty); . } else { . assert!(e_ty.is_unit()); . let ty = coerce.expected_ty(); . coerce.coerce_forced_unit( . self, . &cause, -- line 643 ---------------------------------------- -- line 664 ---------------------------------------- . } else { . // If `ctxt.coerce` is `None`, we can just ignore . // the type of the expression. This is because . // either this was a break *without* a value, in . // which case it is always a legal type (`()`), or . // else an error would have been flagged by the . // `loops` pass for using break with an expression . // where you are not supposed to. 32 ( 0.00%) assert!(expr_opt.is_none() || self.tcx.sess.has_errors()); . } . . // If we encountered a `break`, then (no surprise) it may be possible to break from the . // loop... unless the value being returned from the loop diverges itself, e.g. . // `break return 5` or `break loop {}`. 192 ( 0.00%) ctxt.may_break |= !self.diverges.get().is_always(); . . // the type of a `break` is always `!`, since it diverges . tcx.types.never . } else { . // Otherwise, we failed to find the enclosing loop; . // this can only happen if the `break` was not . // inside a loop at all, which is caught by the . // loop-checking pass. -- line 686 ---------------------------------------- -- line 708 ---------------------------------------- . } . } . . fn check_expr_return( . &self, . expr_opt: Option<&'tcx hir::Expr<'tcx>>, . expr: &'tcx hir::Expr<'tcx>, . ) -> Ty<'tcx> { 36 ( 0.00%) if self.ret_coercion.is_none() { . let mut err = ReturnStmtOutsideOfFnBody { . span: expr.span, . encl_body_span: None, . encl_fn_span: None, . }; . . let encl_item_id = self.tcx.hir().get_parent_item(expr.hir_id); . -- line 724 ---------------------------------------- -- line 756 ---------------------------------------- . . self.tcx.sess.emit_err(err); . . if let Some(e) = expr_opt { . // We still have to type-check `e` (issue #86188), but calling . // `check_return_expr` only works inside fn bodies. . self.check_expr(e); . } 72 ( 0.00%) } else if let Some(e) = expr_opt { 29 ( 0.00%) if self.ret_coercion_span.get().is_none() { 50 ( 0.00%) self.ret_coercion_span.set(Some(e.span)); . } 116 ( 0.00%) self.check_return_expr(e, true); . } else { . let mut coercion = self.ret_coercion.as_ref().unwrap().borrow_mut(); 7 ( 0.00%) if self.ret_coercion_span.get().is_none() { 15 ( 0.00%) self.ret_coercion_span.set(Some(expr.span)); . } . let cause = self.cause(expr.span, ObligationCauseCode::ReturnNoExpression); 42 ( 0.00%) if let Some((fn_decl, _)) = self.get_fn_decl(expr.hir_id) { . coercion.coerce_forced_unit( . self, . &cause, 8 ( 0.00%) &mut |db| { . let span = fn_decl.output.span(); . if let Ok(snippet) = self.tcx.sess.source_map().span_to_snippet(span) { . db.span_label( . span, . format!("expected `{}` because of this return type", snippet), . ); . } . }, . true, . ); . } else { . coercion.coerce_forced_unit(self, &cause, &mut |_| (), true); . } . } 108 ( 0.00%) self.tcx.types.never . } . . /// `explicit_return` is `true` if we're checkng an explicit `return expr`, . /// and `false` if we're checking a trailing expression. 1,560 ( 0.00%) pub(super) fn check_return_expr( . &self, . return_expr: &'tcx hir::Expr<'tcx>, . explicit_return: bool, . ) { . let ret_coercion = self.ret_coercion.as_ref().unwrap_or_else(|| { . span_bug!(return_expr.span, "check_return_expr called outside fn body") . }); . . let ret_ty = ret_coercion.borrow().expected_ty(); . let return_expr_ty = self.check_expr_with_hint(return_expr, ret_ty); 195 ( 0.00%) let mut span = return_expr.span; . // Use the span of the trailing expression for our cause, . // not the span of the entire function 390 ( 0.00%) if !explicit_return { 481 ( 0.00%) if let ExprKind::Block(body, _) = return_expr.kind { 447 ( 0.00%) if let Some(last_expr) = body.expr { 146 ( 0.00%) span = last_expr.span; . } . } . } . ret_coercion.borrow_mut().coerce( . self, 390 ( 0.00%) &self.cause(span, ObligationCauseCode::ReturnValue(return_expr.hir_id)), . return_expr, . return_expr_ty, . ); 1,560 ( 0.00%) } . 1,375 ( 0.00%) pub(crate) fn check_lhs_assignable( . &self, . lhs: &'tcx hir::Expr<'tcx>, . err_code: &'static str, . op_span: Span, . ) { 500 ( 0.00%) if lhs.is_syntactic_place_expr() { . return; . } . . // FIXME: Make this use SessionDiagnostic once error codes can be dynamically set. . let mut err = self.tcx.sess.struct_span_err_with_code( . op_span, . "invalid left-hand side of assignment", . DiagnosticId::Error(err_code.into()), -- line 842 ---------------------------------------- -- line 880 ---------------------------------------- . | hir::Node::Crate(_) => break, . _ => { . parent = self.tcx.hir().get_parent_node(parent); . } . } . } . . err.emit(); 1,000 ( 0.00%) } . . // A generic function for checking the 'then' and 'else' clauses in an 'if' . // or 'if-else' expression. . fn check_then_else( . &self, . cond_expr: &'tcx hir::Expr<'tcx>, . then_expr: &'tcx hir::Expr<'tcx>, . opt_else_expr: Option<&'tcx hir::Expr<'tcx>>, . sp: Span, . orig_expected: Expectation<'tcx>, . ) -> Ty<'tcx> { . let cond_ty = self.check_expr_has_type_or_error(cond_expr, self.tcx.types.bool, |_| {}); . 585 ( 0.00%) self.warn_if_unreachable( 234 ( 0.00%) cond_expr.hir_id, 117 ( 0.00%) then_expr.span, . "block in `if` or `while` expression", . ); . 234 ( 0.00%) let cond_diverges = self.diverges.get(); . self.diverges.set(Diverges::Maybe); . . let expected = orig_expected.adjust_for_branches(self); . let then_ty = self.check_expr_with_expectation(then_expr, expected); . let then_diverges = self.diverges.get(); . self.diverges.set(Diverges::Maybe); . . // We've already taken the expected type's preferences -- line 916 ---------------------------------------- -- line 919 ---------------------------------------- . // `expected` if it represents a *hard* constraint . // (`only_has_type`); otherwise, we just go with a . // fresh type variable. . let coerce_to_ty = expected.coercion_target_type(self, sp); . let mut coerce: DynamicCoerceMany<'_> = CoerceMany::new(coerce_to_ty); . . coerce.coerce(self, &self.misc(sp), then_expr, then_ty); . 234 ( 0.00%) if let Some(else_expr) = opt_else_expr { 126 ( 0.00%) let else_ty = if sp.desugaring_kind() == Some(DesugaringKind::LetElse) { . // todo introduce `check_expr_with_expectation(.., Expectation::LetElse)` . // for errors that point to the offending expression rather than the entire block. . // We could use `check_expr_eq_type(.., tcx.types.never)`, but then there is no . // way to detect that the expected type originated from let-else and provide . // a customized error. . let else_ty = self.check_expr(else_expr); . let cause = self.cause(else_expr.span, ObligationCauseCode::LetElse); . -- line 936 ---------------------------------------- -- line 943 ---------------------------------------- . else_ty . } . } else { . self.check_expr_with_expectation(else_expr, expected) . }; . let else_diverges = self.diverges.get(); . . let opt_suggest_box_span = 504 ( 0.00%) self.opt_suggest_box_span(else_expr.span, else_ty, orig_expected); . let if_cause = . self.if_cause(sp, then_expr, else_expr, then_ty, else_ty, opt_suggest_box_span); . . coerce.coerce(self, &if_cause, else_expr, else_ty); . . // We won't diverge unless both branches do (or the condition does). 1,071 ( 0.00%) self.diverges.set(cond_diverges | then_diverges & else_diverges); . } else { . self.if_fallback_coercion(sp, then_expr, &mut coerce); . . // If the condition is false we can't diverge. . self.diverges.set(cond_diverges); . } . 1,521 ( 0.00%) let result_ty = coerce.complete(self); 117 ( 0.00%) if cond_ty.references_error() { self.tcx.ty_error() } else { result_ty } . } . . /// Type check assignment expression `expr` of form `lhs = rhs`. . /// The expected type is `()` and is passed to the function for the purposes of diagnostics. . fn check_expr_assign( . &self, . expr: &'tcx hir::Expr<'tcx>, . expected: Expectation<'tcx>, . lhs: &'tcx hir::Expr<'tcx>, . rhs: &'tcx hir::Expr<'tcx>, . span: &Span, . ) -> Ty<'tcx> { 114 ( 0.00%) let expected_ty = expected.coercion_target_type(self, expr.span); 228 ( 0.00%) if expected_ty == self.tcx.types.bool { . // The expected type is `bool` but this will result in `()` so we can reasonably . // say that the user intended to write `lhs == rhs` instead of `lhs = rhs`. . // The likely cause of this is `if foo = bar { .. }`. . let actual_ty = self.tcx.mk_unit(); . let mut err = self.demand_suptype_diag(expr.span, expected_ty, actual_ty).unwrap(); . let lhs_ty = self.check_expr(&lhs); . let rhs_ty = self.check_expr(&rhs); . let (applicability, eq) = if self.can_coerce(rhs_ty, lhs_ty) { -- line 989 ---------------------------------------- -- line 1019 ---------------------------------------- . if lhs_ty.references_error() || rhs_ty.references_error() { . err.delay_as_bug() . } else { . err.emit(); . } . return self.tcx.ty_error(); . } . 684 ( 0.00%) self.check_lhs_assignable(lhs, "E0070", *span); . . let lhs_ty = self.check_expr_with_needs(&lhs, Needs::MutPlace); 684 ( 0.00%) let rhs_ty = self.check_expr_coercable_to_type(&rhs, lhs_ty, Some(lhs)); . 684 ( 0.00%) self.require_type_is_sized(lhs_ty, lhs.span, traits::AssignmentLhsSized); . 228 ( 0.00%) if lhs_ty.references_error() || rhs_ty.references_error() { . self.tcx.ty_error() . } else { . self.tcx.mk_unit() . } . } . . fn check_expr_let(&self, let_expr: &'tcx hir::Let<'tcx>) -> Ty<'tcx> { . // for let statements, this is done in check_stmt 12 ( 0.00%) let init = let_expr.init; 84 ( 0.00%) self.warn_if_unreachable(init.hir_id, init.span, "block in `let` expression"); . // otherwise check exactly as a let statement 24 ( 0.00%) self.check_decl(let_expr.into()); . // but return a bool, for this is a boolean expression 36 ( 0.00%) self.tcx.types.bool . } . . fn check_expr_loop( . &self, . body: &'tcx hir::Block<'tcx>, . source: hir::LoopSource, . expected: Expectation<'tcx>, . expr: &'tcx hir::Expr<'tcx>, . ) -> Ty<'tcx> { 16 ( 0.00%) let coerce = match source { . // you can only use break with a value from a normal `loop { }` . hir::LoopSource::Loop => { 10 ( 0.00%) let coerce_to = expected.coercion_target_type(self, body.span); . Some(CoerceMany::new(coerce_to)) . } . . hir::LoopSource::While | hir::LoopSource::ForLoop => None, . }; . . let ctxt = BreakableCtxt { . coerce, . may_break: false, // Will get updated if/when we find a `break`. . }; . 136 ( 0.00%) let (ctxt, ()) = self.with_breakable_ctxt(expr.hir_id, ctxt, || { 24 ( 0.00%) self.check_block_no_value(&body); . }); . 16 ( 0.00%) if ctxt.may_break { . // No way to know whether it's diverging because . // of a `break` or an outer `break` or `return`. . self.diverges.set(Diverges::Maybe); . } . . // If we permit break with a value, then result type is . // the LUB of the breaks (possibly ! if none); else, it . // is nil. This makes sense because infinite loops . // (which would have type !) are only possible iff we . // permit break with a value [1]. 2 ( 0.00%) if ctxt.coerce.is_none() && !ctxt.may_break { . // [1] . self.tcx.sess.delay_span_bug(body.span, "no coercion, but loop may not break"); . } 24 ( 0.00%) ctxt.coerce.map(|c| c.complete(self)).unwrap_or_else(|| self.tcx.mk_unit()) . } . . /// Checks a method call. . fn check_method_call( . &self, . expr: &'tcx hir::Expr<'tcx>, . segment: &hir::PathSegment<'_>, . args: &'tcx [hir::Expr<'tcx>], . expected: Expectation<'tcx>, . ) -> Ty<'tcx> { 436 ( 0.00%) let rcvr = &args[0]; . let rcvr_t = self.check_expr(&rcvr); . // no need to check for bot/err -- callee does that 872 ( 0.00%) let rcvr_t = self.structurally_resolved_type(args[0].span, rcvr_t); 218 ( 0.00%) let span = segment.ident.span; . 3,488 ( 0.00%) let method = match self.lookup_method(rcvr_t, segment, span, expr, rcvr, args) { 436 ( 0.00%) Ok(method) => { . // We could add a "consider `foo::`" suggestion here, but I wasn't able to . // trigger this codepath causing `structuraly_resolved_type` to emit an error. . 2,398 ( 0.00%) self.write_method_call(expr.hir_id, method); 1,090 ( 0.00%) Ok(method) . } . Err(error) => { . if segment.ident.name != kw::Empty { . if let Some(mut err) = self.report_method_error( . span, . rcvr_t, . segment.ident, . SelfSource::MethodCall(&args[0]), -- line 1123 ---------------------------------------- -- line 1127 ---------------------------------------- . err.emit(); . } . } . Err(()) . } . }; . . // Call the generic checker. 3,052 ( 0.00%) self.check_method_argument_types( . span, . expr, 1,308 ( 0.00%) method, . &args[1..], . DontTupleArguments, . expected, . ) . } . . fn check_expr_cast( . &self, . e: &'tcx hir::Expr<'tcx>, . t: &'tcx hir::Ty<'tcx>, . expr: &'tcx hir::Expr<'tcx>, . ) -> Ty<'tcx> { . // Find the type of `e`. Supply hints based on the type we are casting to, . // if appropriate. 104 ( 0.00%) let t_cast = self.to_ty_saving_user_provided_ty(t); . let t_cast = self.resolve_vars_if_possible(t_cast); . let t_expr = self.check_expr_with_expectation(e, ExpectCastableToType(t_cast)); . let t_expr = self.resolve_vars_if_possible(t_expr); . . // Eagerly check for some obvious errors. 52 ( 0.00%) if t_expr.references_error() || t_cast.references_error() { . self.tcx.ty_error() . } else { . // Defer other checks until we're done type checking. . let mut deferred_cast_checks = self.deferred_cast_checks.borrow_mut(); 78 ( 0.00%) match cast::CastCheck::new(self, e, t_expr, t_cast, t.span, expr.span) { . Ok(cast_check) => { . debug!( . "check_expr_cast: deferring cast from {:?} to {:?}: {:?}", . t_cast, t_expr, cast_check, . ); . deferred_cast_checks.push(cast_check); . t_cast . } -- line 1172 ---------------------------------------- -- line 1176 ---------------------------------------- . } . . fn check_expr_array( . &self, . args: &'tcx [hir::Expr<'tcx>], . expected: Expectation<'tcx>, . expr: &'tcx hir::Expr<'tcx>, . ) -> Ty<'tcx> { 13 ( 0.00%) let element_ty = if !args.is_empty() { 39 ( 0.00%) let coerce_to = expected . .to_option(self) 36 ( 0.00%) .and_then(|uty| match *uty.kind() { . ty::Array(ty, _) | ty::Slice(ty) => Some(ty), . _ => None, . }) . .unwrap_or_else(|| { 5 ( 0.00%) self.next_ty_var(TypeVariableOrigin { . kind: TypeVariableOriginKind::TypeInference, . span: expr.span, . }) . }); . let mut coerce = CoerceMany::with_coercion_sites(coerce_to, args); 13 ( 0.00%) assert_eq!(self.diverges.get(), Diverges::Maybe); . for e in args { . let e_ty = self.check_expr_with_hint(e, coerce_to); 5,677 ( 0.00%) let cause = self.misc(e.span); 34,062 ( 0.00%) coerce.coerce(self, &cause, e, e_ty); . } 156 ( 0.00%) coerce.complete(self) . } else { . self.next_ty_var(TypeVariableOrigin { . kind: TypeVariableOriginKind::TypeInference, . span: expr.span, . }) . }; 78 ( 0.00%) self.tcx.mk_array(element_ty, args.len() as u64) . } . . fn check_expr_const_block( . &self, . anon_const: &'tcx hir::AnonConst, . expected: Expectation<'tcx>, . _expr: &'tcx hir::Expr<'tcx>, . ) -> Ty<'tcx> { -- line 1219 ---------------------------------------- -- line 1270 ---------------------------------------- . } . . fn check_expr_tuple( . &self, . elts: &'tcx [hir::Expr<'tcx>], . expected: Expectation<'tcx>, . expr: &'tcx hir::Expr<'tcx>, . ) -> Ty<'tcx> { 11,412 ( 0.00%) let flds = expected.only_has_type(self).and_then(|ty| { 5,700 ( 0.00%) let ty = self.resolve_vars_with_obligations(ty); 11,400 ( 0.00%) match ty.kind() { 5,676 ( 0.00%) ty::Tuple(flds) => Some(&flds[..]), . _ => None, . } . }); . 49,591 ( 0.00%) let elt_ts_iter = elts.iter().enumerate().map(|(i, e)| match flds { 32,386 ( 0.00%) Some(fs) if i < fs.len() => { 34,882 ( 0.00%) let ety = fs[i].expect_ty(); 83,461 ( 0.00%) self.check_expr_coercable_to_type(&e, ety, None); . ety . } 30 ( 0.00%) _ => self.check_expr_with_expectation(&e, NoExpectation), . }); 11,412 ( 0.00%) let tuple = self.tcx.mk_tup(elt_ts_iter); 5,706 ( 0.00%) if tuple.references_error() { . self.tcx.ty_error() . } else { 39,942 ( 0.00%) self.require_type_is_sized(tuple, expr.span, traits::TupleInitializerSized); . tuple . } . } . . fn check_expr_struct( . &self, . expr: &hir::Expr<'_>, . expected: Expectation<'tcx>, . qpath: &QPath<'_>, . fields: &'tcx [hir::ExprField<'tcx>], . base_expr: &'tcx Option<&'tcx hir::Expr<'tcx>>, . ) -> Ty<'tcx> { . // Find the relevant variant 410 ( 0.00%) let (variant, adt_ty) = if let Some(variant_ty) = self.check_struct_path(qpath, expr.hir_id) . { . variant_ty . } else { . self.check_struct_fields_on_error(fields, base_expr); . return self.tcx.ty_error(); . }; . . // Prohibit struct expressions when non-exhaustive flag is set. . let adt = adt_ty.ty_adt_def().expect("`check_struct_path` returned non-ADT type"); 83 ( 0.00%) if !adt.did.is_local() && variant.is_field_list_non_exhaustive() { . self.tcx . .sess . .emit_err(StructExprNonExhaustive { span: expr.span, what: adt.variant_descr() }); . } . 574 ( 0.00%) self.check_expr_struct_fields( . adt_ty, . expected, . expr.hir_id, 123 ( 0.00%) qpath.span(), . variant, . fields, . base_expr, 82 ( 0.00%) expr.span, . ); . 287 ( 0.00%) self.require_type_is_sized(adt_ty, expr.span, traits::StructInitializerSized); . adt_ty . } . 574 ( 0.00%) fn check_expr_struct_fields( . &self, . adt_ty: Ty<'tcx>, . expected: Expectation<'tcx>, . expr_id: hir::HirId, . span: Span, . variant: &'tcx ty::VariantDef, . ast_fields: &'tcx [hir::ExprField<'tcx>], . base_expr: &'tcx Option<&'tcx hir::Expr<'tcx>>, . expr_span: Span, . ) { 82 ( 0.00%) let tcx = self.tcx; . . let adt_ty_hint = self 82 ( 0.00%) .expected_inputs_for_expected_output(span, expected, adt_ty, &[adt_ty]) . .get(0) . .cloned() . .unwrap_or(adt_ty); . // re-link the regions that EIfEO can erase. . self.demand_eqtype(span, adt_ty_hint, adt_ty); . 82 ( 0.00%) let (substs, adt_kind, kind_name) = match adt_ty.kind() { 82 ( 0.00%) ty::Adt(adt, substs) => (substs, adt.adt_kind(), adt.variant_descr()), . _ => span_bug!(span, "non-ADT passed to check_expr_struct_fields"), . }; . . let mut remaining_fields = variant . .fields . .iter() . .enumerate() 498 ( 0.00%) .map(|(i, field)| (field.ident(tcx).normalize_to_macros_2_0(), (i, field))) . .collect::>(); . . let mut seen_fields = FxHashMap::default(); . . let mut error_happened = false; . . // Type-check each field. . for field in ast_fields { 1,320 ( 0.00%) let ident = tcx.adjust_ident(field.ident, variant.def_id); 249 ( 0.00%) let field_type = if let Some((i, v_field)) = remaining_fields.remove(&ident) { 249 ( 0.00%) seen_fields.insert(ident, field.span); . self.write_field_index(field.hir_id, i); . . // We don't look at stability attributes on . // struct-like enums (yet...), but it's definitely not . // a bug to have constructed one. 83 ( 0.00%) if adt_kind != AdtKind::Enum { 747 ( 0.00%) tcx.check_stability(v_field.did, Some(expr_id), field.span, None); . } . 249 ( 0.00%) self.field_ty(field.span, v_field, substs) . } else { . error_happened = true; . if let Some(prev_span) = seen_fields.get(&ident) { . tcx.sess.emit_err(FieldMultiplySpecifiedInInitializer { . span: field.ident.span, . prev_span: *prev_span, . ident, . }); -- line 1402 ---------------------------------------- -- line 1406 ---------------------------------------- . ); . } . . tcx.ty_error() . }; . . // Make sure to give a type to the field even if there's . // an error, so we can continue type-checking. 415 ( 0.00%) self.check_expr_coercable_to_type(&field.expr, field_type, None); . } . . // Make sure the programmer specified correct number of fields. . if kind_name == "union" { . if ast_fields.len() != 1 { . struct_span_err!( . tcx.sess, . span, -- line 1422 ---------------------------------------- -- line 1425 ---------------------------------------- . ) . .emit(); . } . } . . // If check_expr_struct_fields hit an error, do not attempt to populate . // the fields with the base_expr. This could cause us to hit errors later . // when certain fields are assumed to exist that in fact do not. 82 ( 0.00%) if error_happened { . return; . } . 123 ( 0.00%) if let Some(base_expr) = base_expr { . // FIXME: We are currently creating two branches here in order to maintain . // consistency. But they should be merged as much as possible. . let fru_tys = if self.tcx.features().type_changing_struct_update { . let base_ty = self.check_expr(base_expr); . match adt_ty.kind() { . ty::Adt(adt, substs) if adt.is_struct() => { . match base_ty.kind() { . ty::Adt(base_adt, base_subs) if adt == base_adt => { -- line 1445 ---------------------------------------- -- line 1528 ---------------------------------------- . return self . .tcx . .sess . .emit_err(FunctionalRecordUpdateOnNonStruct { span: base_expr.span }); . } . } . }; . self.typeck_results.borrow_mut().fru_field_types_mut().insert(expr_id, fru_tys); 41 ( 0.00%) } else if kind_name != "union" && !remaining_fields.is_empty() { . let inaccessible_remaining_fields = remaining_fields.iter().any(|(_, (_, field))| { . !field.vis.is_accessible_from(tcx.parent_module(expr_id).to_def_id(), tcx) . }); . . if inaccessible_remaining_fields { . self.report_inaccessible_fields(adt_ty, span); . } else { . self.report_missing_fields(adt_ty, span, remaining_fields); . } . } 410 ( 0.00%) } . . fn check_struct_fields_on_error( . &self, . fields: &'tcx [hir::ExprField<'tcx>], . base_expr: &'tcx Option<&'tcx hir::Expr<'tcx>>, . ) { . for field in fields { . self.check_expr(&field.expr); -- line 1555 ---------------------------------------- -- line 1805 ---------------------------------------- . names.iter().take(limit).map(|n| format!("`{}`", n)).collect::>().join(", "); . if names.len() > limit { . display = format!("{} ... and {} others", display, names.len() - limit); . } . display . } . . // Check field access expressions 2,436 ( 0.00%) fn check_field( . &self, . expr: &'tcx hir::Expr<'tcx>, . base: &'tcx hir::Expr<'tcx>, . field: Ident, . ) -> Ty<'tcx> { . debug!("check_field(expr: {:?}, base: {:?}, field: {:?})", expr, base, field); . let expr_t = self.check_expr(base); 1,015 ( 0.00%) let expr_t = self.structurally_resolved_type(base.span, expr_t); 406 ( 0.00%) let mut private_candidate = None; 203 ( 0.00%) let mut autoderef = self.autoderef(expr.span, expr_t); 1,560 ( 0.00%) while let Some((base_t, _)) = autoderef.next() { . debug!("base_t: {:?}", base_t); 1,582 ( 0.00%) match base_t.kind() { 552 ( 0.00%) ty::Adt(base_def, substs) if !base_def.is_enum() => { . debug!("struct named {:?}", base_t); 1,472 ( 0.00%) let (ident, def_scope) = 2,208 ( 0.00%) self.tcx.adjust_ident_and_get_scope(field, base_def.did, self.body_id); 368 ( 0.00%) let fields = &base_def.non_enum_variant().fields; . if let Some(index) = fields . .iter() 7,514 ( 0.00%) .position(|f| f.ident(self.tcx).normalize_to_macros_2_0() == ident) . { . let field = &fields[index]; 552 ( 0.00%) let field_ty = self.field_ty(expr.span, field, substs); . // Save the index of all fields regardless of their visibility in case . // of error recovery. . self.write_field_index(expr.hir_id, index); . let adjustments = self.adjust_steps(&autoderef); 184 ( 0.00%) if field.vis.is_accessible_from(def_scope, self.tcx) { 1,840 ( 0.00%) self.apply_adjustments(base, adjustments); 3,312 ( 0.00%) self.register_predicates(autoderef.into_obligations()); . 2,576 ( 0.00%) self.tcx.check_stability(field.did, Some(expr.hir_id), expr.span, None); . return field_ty; . } . private_candidate = Some((adjustments, base_def.did, field_ty)); . } . } . ty::Tuple(tys) => { 38 ( 0.00%) let fstr = field.as_str(); 57 ( 0.00%) if let Ok(index) = fstr.parse::() { 38 ( 0.00%) if fstr == index.to_string() { 57 ( 0.00%) if let Some(field_ty) = tys.get(index) { . let adjustments = self.adjust_steps(&autoderef); 171 ( 0.00%) self.apply_adjustments(base, adjustments); 342 ( 0.00%) self.register_predicates(autoderef.into_obligations()); . . self.write_field_index(expr.hir_id, index); 76 ( 0.00%) return field_ty.expect_ty(); . } . } . } . } . _ => {} . } . } . self.structurally_resolved_type(autoderef.span(), autoderef.final_ty(false)); -- line 1870 ---------------------------------------- -- line 1890 ---------------------------------------- . E0610, . "`{}` is a primitive type and therefore doesn't have fields", . expr_t . ) . .emit(); . } . . self.tcx().ty_error() 2,233 ( 0.00%) } . . fn suggest_await_on_field_access( . &self, . err: &mut DiagnosticBuilder<'_>, . field_ident: Ident, . base: &'tcx hir::Expr<'tcx>, . ty: Ty<'tcx>, . ) { -- line 1906 ---------------------------------------- -- line 2301 ---------------------------------------- . &self, . base: &'tcx hir::Expr<'tcx>, . idx: &'tcx hir::Expr<'tcx>, . expr: &'tcx hir::Expr<'tcx>, . ) -> Ty<'tcx> { . let base_t = self.check_expr(&base); . let idx_t = self.check_expr(&idx); . 54 ( 0.00%) if base_t.references_error() { . base_t 54 ( 0.00%) } else if idx_t.references_error() { . idx_t . } else { 324 ( 0.00%) let base_t = self.structurally_resolved_type(base.span, base_t); 108 ( 0.00%) match self.lookup_indexing(expr, base, base_t, idx, idx_t) { . Some((index_ty, element_ty)) => { . // two-phase not needed because index_ty is never mutable . self.demand_coerce(idx, idx_t, index_ty, None, AllowTwoPhase::No); . element_ty . } . None => { . let mut err = type_error_struct!( . self.tcx.sess, -- line 2323 ---------------------------------------- 294,968 ( 0.02%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_mir_build/src/thir/cx/expr.rs -------------------------------------------------------------------------------- Ir -- line 18 ---------------------------------------- . use rustc_middle::ty::{self, AdtKind, Ty, UpvarSubsts, UserType}; . use rustc_span::def_id::DefId; . use rustc_span::Span; . use rustc_target::abi::VariantIdx; . . impl<'tcx> Cx<'tcx> { . crate fn mirror_expr(&mut self, expr: &'tcx hir::Expr<'tcx>) -> ExprId { . // `mirror_expr` is recursing very deep. Make sure the stack doesn't overflow. 18,632 ( 0.00%) ensure_sufficient_stack(|| self.mirror_expr_inner(expr)) . } . 464 ( 0.00%) crate fn mirror_exprs(&mut self, exprs: &'tcx [hir::Expr<'tcx>]) -> Box<[ExprId]> { 67,785 ( 0.00%) exprs.iter().map(|expr| self.mirror_expr_inner(expr)).collect() 928 ( 0.00%) } . 235,737 ( 0.01%) pub(super) fn mirror_expr_inner(&mut self, hir_expr: &'tcx hir::Expr<'tcx>) -> ExprId { 183,351 ( 0.01%) let temp_lifetime = self.region_scope_tree.temporary_scope(hir_expr.hir_id.local_id); . let expr_scope = . region::Scope { id: hir_expr.hir_id.local_id, data: region::ScopeData::Node }; . . debug!("Expr::make_mirror(): id={}, span={:?}", hir_expr.hir_id, hir_expr.span); . 104,772 ( 0.01%) let mut expr = self.make_mirror_unadjusted(hir_expr); . 157,158 ( 0.01%) let adjustment_span = match self.adjustment_span { 2,394 ( 0.00%) Some((hir_id, span)) if hir_id == hir_expr.hir_id => Some(span), . _ => None, . }; . . // Now apply adjustments, if any. 104,772 ( 0.01%) for adjustment in self.typeck_results.expr_adjustments(hir_expr) { . debug!("make_mirror: expr={:?} applying adjustment={:?}", expr, adjustment); 3,788 ( 0.00%) let span = expr.span; 9,849 ( 0.00%) expr = 25,326 ( 0.00%) self.apply_adjustment(hir_expr, expr, adjustment, adjustment_span.unwrap_or(span)); . } . . // Next, wrap this up in the expr's scope. 340,509 ( 0.02%) expr = Expr { . temp_lifetime, 25,246 ( 0.00%) ty: expr.ty, 26,193 ( 0.00%) span: hir_expr.span, . kind: ExprKind::Scope { . region_scope: expr_scope, 471,474 ( 0.03%) value: self.thir.exprs.push(expr), 52,386 ( 0.00%) lint_level: LintLevel::Explicit(hir_expr.hir_id), . }, . }; . . // Finally, create a destruction scope, if any. 78,579 ( 0.00%) if let Some(region_scope) = 52,386 ( 0.00%) self.region_scope_tree.opt_destruction_scope(hir_expr.hir_id.local_id) . { 10,668 ( 0.00%) expr = Expr { . temp_lifetime, . ty: expr.ty, 889 ( 0.00%) span: hir_expr.span, . kind: ExprKind::Scope { . region_scope, 12,446 ( 0.00%) value: self.thir.exprs.push(expr), . lint_level: LintLevel::Inherited, . }, . }; . } . . // OK, all done! 576,246 ( 0.03%) self.thir.exprs.push(expr) 235,737 ( 0.01%) } . . fn apply_adjustment( . &mut self, . hir_expr: &'tcx hir::Expr<'tcx>, . mut expr: Expr<'tcx>, . adjustment: &Adjustment<'tcx>, . mut span: Span, . ) -> Expr<'tcx> { 2,814 ( 0.00%) let Expr { temp_lifetime, .. } = expr; . . // Adjust the span from the block, to the last expression of the . // block. This is a better span when returning a mutable reference . // with too short a lifetime. The error message will use the span . // from the assignment to the return place, which should only point . // at the returned value, not the entire function body. . // . // fn return_short_lived<'a>(x: &'a mut i32) -> &'static mut i32 { . // x . // // ^ error message points at this expression. . // } . let mut adjust_span = |expr: &mut Expr<'tcx>| { 1,310 ( 0.00%) if let ExprKind::Block { body } = &expr.kind { . if let Some(last_expr) = body.expr { . span = self.thir[last_expr].span; . expr.span = span; . } . } . }; . 12,520 ( 0.00%) let kind = match adjustment.kind { . Adjust::Pointer(PointerCast::Unsize) => { . adjust_span(&mut expr); 442 ( 0.00%) ExprKind::Pointer { cast: PointerCast::Unsize, source: self.thir.exprs.push(expr) } . } 85 ( 0.00%) Adjust::Pointer(cast) => ExprKind::Pointer { cast, source: self.thir.exprs.push(expr) }, 1,479 ( 0.00%) Adjust::NeverToAny => ExprKind::NeverToAny { source: self.thir.exprs.push(expr) }, . Adjust::Deref(None) => { . adjust_span(&mut expr); 10,693 ( 0.00%) ExprKind::Deref { arg: self.thir.exprs.push(expr) } . } . Adjust::Deref(Some(deref)) => { . // We don't need to do call adjust_span here since . // deref coercions always start with a built-in deref. . let call = deref.method_call(self.tcx(), expr.ty); . . expr = Expr { . temp_lifetime, -- line 132 ---------------------------------------- -- line 139 ---------------------------------------- . arg: self.thir.exprs.push(expr), . }, . }; . . let expr = Box::new([self.thir.exprs.push(expr)]); . . self.overloaded_place(hir_expr, adjustment.target, Some(call), expr, deref.span) . } 2,640 ( 0.00%) Adjust::Borrow(AutoBorrow::Ref(_, m)) => ExprKind::Borrow { . borrow_kind: m.to_borrow_kind(), 9,240 ( 0.00%) arg: self.thir.exprs.push(expr), . }, . Adjust::Borrow(AutoBorrow::RawPtr(mutability)) => { . ExprKind::AddressOf { mutability, arg: self.thir.exprs.push(expr) } . } . }; . 26,733 ( 0.00%) Expr { temp_lifetime, ty: adjustment.target, span, kind } . } . 261,930 ( 0.02%) fn make_mirror_unadjusted(&mut self, expr: &'tcx hir::Expr<'tcx>) -> Expr<'tcx> { 104,772 ( 0.01%) let expr_ty = self.typeck_results().expr_ty(expr); 26,193 ( 0.00%) let expr_span = expr.span; 130,965 ( 0.01%) let temp_lifetime = self.region_scope_tree.temporary_scope(expr.hir_id.local_id); . 157,948 ( 0.01%) let kind = match expr.kind { . // Here comes the interesting stuff: 654 ( 0.00%) hir::ExprKind::MethodCall(segment, ref args, fn_span) => { . // Rewrite a.b(c) into UFCS form like Trait::b(a, c) 1,526 ( 0.00%) let expr = self.method_callee(expr, segment.ident.span, None); . // When we apply adjustments to the receiver, use the span of . // the overall method call for better diagnostics. args[0] . // is guaranteed to exist, since a method call always has a receiver. 872 ( 0.00%) let old_adjustment_span = self.adjustment_span.replace((args[0].hir_id, expr_span)); . tracing::info!("Using method span: {:?}", expr.span); 218 ( 0.00%) let args = self.mirror_exprs(args); 436 ( 0.00%) self.adjustment_span = old_adjustment_span; 1,526 ( 0.00%) ExprKind::Call { 218 ( 0.00%) ty: expr.ty, 3,052 ( 0.00%) fun: self.thir.exprs.push(expr), . args, . from_hir_call: true, . fn_span, . } . } . . hir::ExprKind::Call(ref fun, ref args) => { 1,240 ( 0.00%) if self.typeck_results().is_method_call(expr) { . // The callee is something implementing Fn, FnMut, or FnOnce. . // Find the actual method implementation being called and . // build the appropriate UFCS call expression with the . // callee-object as expr parameter. . . // rewrite f(u, v) into FnOnce::call_once(f, (u, v)) . . let method = self.method_callee(expr, fun.span, None); -- line 194 ---------------------------------------- -- line 206 ---------------------------------------- . ty: method.ty, . fun: self.thir.exprs.push(method), . args: Box::new([self.mirror_expr(fun), tupled_args]), . from_hir_call: true, . fn_span: expr.span, . } . } else { . let adt_data = 1,550 ( 0.00%) if let hir::ExprKind::Path(hir::QPath::Resolved(_, ref path)) = fun.kind { . // Tuple-like ADTs are represented as ExprKind::Call. We convert them here. 1,282 ( 0.00%) expr_ty.ty_adt_def().and_then(|adt_def| match path.res { 156 ( 0.00%) Res::Def(DefKind::Ctor(_, CtorKind::Fn), ctor_id) => { 312 ( 0.00%) Some((adt_def, adt_def.variant_index_with_ctor_id(ctor_id))) . } . Res::SelfCtor(..) => Some((adt_def, VariantIdx::new(0))), . _ => None, . }) . } else { . None . }; 370 ( 0.00%) if let Some((adt_def, index)) = adt_data { 390 ( 0.00%) let substs = self.typeck_results().node_substs(fun.hir_id); 234 ( 0.00%) let user_provided_types = self.typeck_results().user_provided_types(); . let user_ty = 390 ( 0.00%) user_provided_types.get(fun.hir_id).copied().map(|mut u_ty| { . if let UserType::TypeOf(ref mut did, _) = &mut u_ty.value { . *did = adt_def.did; . } . u_ty . }); . debug!("make_mirror_unadjusted: (call) user_ty={:?}", user_ty); . 78 ( 0.00%) let field_refs = args . .iter() . .enumerate() . .map(|(idx, e)| FieldExpr { . name: Field::new(idx), . expr: self.mirror_expr(e), . }) . .collect(); . ExprKind::Adt(Box::new(Adt { -- line 246 ---------------------------------------- -- line 247 ---------------------------------------- . adt_def, . substs, . variant_index: index, . fields: field_refs, . user_ty, . base: None, . })) . } else { 928 ( 0.00%) ExprKind::Call { 1,267 ( 0.00%) ty: self.typeck_results().node_type(fun.hir_id), 232 ( 0.00%) fun: self.mirror_expr(fun), 928 ( 0.00%) args: self.mirror_exprs(args), . from_hir_call: true, 232 ( 0.00%) fn_span: expr.span, . } . } . } . } . . hir::ExprKind::AddrOf(hir::BorrowKind::Ref, mutbl, ref arg) => { 810 ( 0.00%) ExprKind::Borrow { borrow_kind: mutbl.to_borrow_kind(), arg: self.mirror_expr(arg) } . } . . hir::ExprKind::AddrOf(hir::BorrowKind::Raw, mutability, ref arg) => { . ExprKind::AddressOf { mutability, arg: self.mirror_expr(arg) } . } . 6,818 ( 0.00%) hir::ExprKind::Block(ref blk, _) => ExprKind::Block { body: self.mirror_block(blk) }, . . hir::ExprKind::Assign(ref lhs, ref rhs, _) => { 684 ( 0.00%) ExprKind::Assign { lhs: self.mirror_expr(lhs), rhs: self.mirror_expr(rhs) } . } . 11 ( 0.00%) hir::ExprKind::AssignOp(op, ref lhs, ref rhs) => { 44 ( 0.00%) if self.typeck_results().is_method_call(expr) { . let lhs = self.mirror_expr(lhs); . let rhs = self.mirror_expr(rhs); . self.overloaded_operator(expr, Box::new([lhs, rhs])) . } else { 55 ( 0.00%) ExprKind::AssignOp { 33 ( 0.00%) op: bin_op(op.node), 11 ( 0.00%) lhs: self.mirror_expr(lhs), 11 ( 0.00%) rhs: self.mirror_expr(rhs), . } . } . } . 11,629 ( 0.00%) hir::ExprKind::Lit(ref lit) => ExprKind::Literal { 46,516 ( 0.00%) literal: self.const_eval_literal(&lit.node, expr_ty, lit.span, false), . user_ty: None, . const_id: None, . }, . 230 ( 0.00%) hir::ExprKind::Binary(op, ref lhs, ref rhs) => { 920 ( 0.00%) if self.typeck_results().is_method_call(expr) { 75 ( 0.00%) let lhs = self.mirror_expr(lhs); 75 ( 0.00%) let rhs = self.mirror_expr(rhs); . self.overloaded_operator(expr, Box::new([lhs, rhs])) . } else { . // FIXME overflow 576 ( 0.00%) match op.node { 88 ( 0.00%) hir::BinOpKind::And => ExprKind::LogicalOp { . op: LogicalOp::And, 22 ( 0.00%) lhs: self.mirror_expr(lhs), 22 ( 0.00%) rhs: self.mirror_expr(rhs), . }, 92 ( 0.00%) hir::BinOpKind::Or => ExprKind::LogicalOp { . op: LogicalOp::Or, 23 ( 0.00%) lhs: self.mirror_expr(lhs), 23 ( 0.00%) rhs: self.mirror_expr(rhs), . }, . _ => { 440 ( 0.00%) let op = bin_op(op.node); 550 ( 0.00%) ExprKind::Binary { . op, 110 ( 0.00%) lhs: self.mirror_expr(lhs), 110 ( 0.00%) rhs: self.mirror_expr(rhs), . } . } . } . } . } . . hir::ExprKind::Index(ref lhs, ref index) => { 270 ( 0.00%) if self.typeck_results().is_method_call(expr) { . let lhs = self.mirror_expr(lhs); . let index = self.mirror_expr(index); 273 ( 0.00%) self.overloaded_place(expr, expr_ty, None, Box::new([lhs, index]), expr.span) . } else { 132 ( 0.00%) ExprKind::Index { lhs: self.mirror_expr(lhs), index: self.mirror_expr(index) } . } . } . . hir::ExprKind::Unary(hir::UnOp::Deref, ref arg) => { 735 ( 0.00%) if self.typeck_results().is_method_call(expr) { . let arg = self.mirror_expr(arg); . self.overloaded_place(expr, expr_ty, None, Box::new([arg]), expr.span) . } else { 441 ( 0.00%) ExprKind::Deref { arg: self.mirror_expr(arg) } . } . } . . hir::ExprKind::Unary(hir::UnOp::Not, ref arg) => { 25 ( 0.00%) if self.typeck_results().is_method_call(expr) { . let arg = self.mirror_expr(arg); . self.overloaded_operator(expr, Box::new([arg])) . } else { 15 ( 0.00%) ExprKind::Unary { op: UnOp::Not, arg: self.mirror_expr(arg) } . } . } . . hir::ExprKind::Unary(hir::UnOp::Neg, ref arg) => { . if self.typeck_results().is_method_call(expr) { . let arg = self.mirror_expr(arg); . self.overloaded_operator(expr, Box::new([arg])) . } else if let hir::ExprKind::Lit(ref lit) = arg.kind { -- line 362 ---------------------------------------- -- line 365 ---------------------------------------- . user_ty: None, . const_id: None, . } . } else { . ExprKind::Unary { op: UnOp::Neg, arg: self.mirror_expr(arg) } . } . } . 82 ( 0.00%) hir::ExprKind::Struct(ref qpath, ref fields, ref base) => match expr_ty.kind() { 82 ( 0.00%) ty::Adt(adt, substs) => match adt.adt_kind() { . AdtKind::Struct | AdtKind::Union => { 123 ( 0.00%) let user_provided_types = self.typeck_results().user_provided_types(); 164 ( 0.00%) let user_ty = user_provided_types.get(expr.hir_id).copied(); . debug!("make_mirror_unadjusted: (struct/union) user_ty={:?}", user_ty); 164 ( 0.00%) ExprKind::Adt(Box::new(Adt { 82 ( 0.00%) adt_def: adt, . variant_index: VariantIdx::new(0), 82 ( 0.00%) substs, . user_ty, 82 ( 0.00%) fields: self.field_refs(fields), 164 ( 0.00%) base: base.as_ref().map(|base| FruInfo { . base: self.mirror_expr(base), . field_types: self.typeck_results().fru_field_types()[expr.hir_id] . .iter() . .copied() . .collect(), . }), . })) . } -- line 393 ---------------------------------------- -- line 418 ---------------------------------------- . } . }, . _ => { . span_bug!(expr.span, "unexpected type for struct literal: {:?}", expr_ty); . } . }, . . hir::ExprKind::Closure(..) => { 66 ( 0.00%) let closure_ty = self.typeck_results().expr_ty(expr); 66 ( 0.00%) let (def_id, substs, movability) = match *closure_ty.kind() { . ty::Closure(def_id, substs) => (def_id, UpvarSubsts::Closure(substs), None), . ty::Generator(def_id, substs, movability) => { . (def_id, UpvarSubsts::Generator(substs), Some(movability)) . } . _ => { . span_bug!(expr.span, "closure expr w/o closure type: {:?}", closure_ty); . } . }; . 132 ( 0.00%) let upvars = self . .typeck_results . .closure_min_captures_flattened(def_id) . .zip(substs.upvar_tys()) . .map(|(captured_place, ty)| { 50 ( 0.00%) let upvars = self.capture_upvar(expr, captured_place, ty); 140 ( 0.00%) self.thir.exprs.push(upvars) . }) . .collect(); . . // Convert the closure fake reads, if any, from hir `Place` to ExprRef 22 ( 0.00%) let fake_reads = match self.typeck_results.closure_fake_reads.get(&def_id) { . Some(fake_reads) => fake_reads . .iter() . .map(|(place, cause, hir_id)| { . let expr = self.convert_captured_hir_place(expr, place.clone()); . (self.thir.exprs.push(expr), *cause, *hir_id) . }) . .collect(), . None => Vec::new(), . }; . 418 ( 0.00%) ExprKind::Closure { closure_id: def_id, substs, upvars, movability, fake_reads } . } . 6,392 ( 0.00%) hir::ExprKind::Path(ref qpath) => { 25,568 ( 0.00%) let res = self.typeck_results().qpath_res(qpath, expr.hir_id); 25,568 ( 0.00%) self.convert_path_expr(expr, res) . } . . hir::ExprKind::InlineAsm(ref asm) => ExprKind::InlineAsm { . template: asm.template, . operands: asm . .operands . .iter() . .map(|(op, _op_sp)| { -- line 472 ---------------------------------------- -- line 581 ---------------------------------------- . let count = match ty.kind() { . ty::Array(_, ct) => ct, . _ => span_bug!(expr.span, "unexpected repeat expr ty: {:?}", ty), . }; . . ExprKind::Repeat { value: self.mirror_expr(v), count } . } . hir::ExprKind::Ret(ref v) => { 108 ( 0.00%) ExprKind::Return { value: v.as_ref().map(|v| self.mirror_expr(v)) } . } 96 ( 0.00%) hir::ExprKind::Break(dest, ref value) => match dest.target_id { 160 ( 0.00%) Ok(target_id) => ExprKind::Break { . label: region::Scope { id: target_id.local_id, data: region::ScopeData::Node }, . value: value.as_ref().map(|value| self.mirror_expr(value)), . }, . Err(err) => bug!("invalid loop id for break: {}", err), . }, 39 ( 0.00%) hir::ExprKind::Continue(dest) => match dest.target_id { 52 ( 0.00%) Ok(loop_id) => ExprKind::Continue { . label: region::Scope { id: loop_id.local_id, data: region::ScopeData::Node }, . }, . Err(err) => bug!("invalid loop id for continue: {}", err), . }, 96 ( 0.00%) hir::ExprKind::Let(let_expr) => ExprKind::Let { 12 ( 0.00%) expr: self.mirror_expr(let_expr.init), 36 ( 0.00%) pat: self.pattern_from_hir(let_expr.pat), . }, 1,287 ( 0.00%) hir::ExprKind::If(cond, then, else_opt) => ExprKind::If { . if_then_scope: region::Scope { 117 ( 0.00%) id: then.hir_id.local_id, . data: region::ScopeData::IfThen, . }, . cond: self.mirror_expr(cond), . then: self.mirror_expr(then), . else_opt: else_opt.map(|el| self.mirror_expr(el)), . }, 470 ( 0.00%) hir::ExprKind::Match(ref discr, ref arms, _) => ExprKind::Match { 94 ( 0.00%) scrutinee: self.mirror_expr(discr), 1,135 ( 0.00%) arms: arms.iter().map(|a| self.convert_arm(a)).collect(), . }, . hir::ExprKind::Loop(ref body, ..) => { 40 ( 0.00%) let block_ty = self.typeck_results().node_type(body.hir_id); 48 ( 0.00%) let temp_lifetime = self.region_scope_tree.temporary_scope(body.hir_id.local_id); 32 ( 0.00%) let block = self.mirror_block(body); 120 ( 0.00%) let body = self.thir.exprs.push(Expr { . ty: block_ty, . temp_lifetime, 8 ( 0.00%) span: block.span, 64 ( 0.00%) kind: ExprKind::Block { body: block }, . }); 24 ( 0.00%) ExprKind::Loop { body } . } 812 ( 0.00%) hir::ExprKind::Field(ref source, ..) => ExprKind::Field { 203 ( 0.00%) lhs: self.mirror_expr(source), 1,218 ( 0.00%) name: Field::new(self.tcx.field_index(expr.hir_id, self.typeck_results)), . }, . hir::ExprKind::Cast(ref source, ref cast_ty) => { . // Check for a user-given type annotation on this `cast` 104 ( 0.00%) let user_provided_types = self.typeck_results.user_provided_types(); 156 ( 0.00%) let user_ty = user_provided_types.get(cast_ty.hir_id); . . debug!( . "cast({:?}) has ty w/ hir_id {:?} and user provided ty {:?}", . expr, cast_ty.hir_id, user_ty, . ); . . // Check to see if this cast is a "coercion cast", where the cast is actually done . // using a coercion (or is a no-op). 156 ( 0.00%) let cast = if self.typeck_results().is_coercion_cast(source.hir_id) { . // Convert the lexpr to a vexpr. . ExprKind::Use { source: self.mirror_expr(source) } 78 ( 0.00%) } else if self.typeck_results().expr_ty(source).is_region_ptr() { . // Special cased so that we can type check that the element . // type of the source matches the pointed to type of the . // destination. . ExprKind::Pointer { . source: self.mirror_expr(source), . cast: PointerCast::ArrayToPointer, . } . } else { -- line 660 ---------------------------------------- -- line 664 ---------------------------------------- . // enum's layout (or its tag type) to compute it during const eval . // Example: . // enum Foo { . // A, . // B = A as isize + 4, . // } . // The correct solution would be to add symbolic computations to miri, . // so we wouldn't have to compute and store the actual value 88 ( 0.00%) let var = if let hir::ExprKind::Path(ref qpath) = source.kind { 60 ( 0.00%) let res = self.typeck_results().qpath_res(qpath, source.hir_id); 70 ( 0.00%) self.typeck_results().node_type(source.hir_id).ty_adt_def().and_then( . |adt_def| match res { . Res::Def( . DefKind::Ctor(CtorOf::Variant, CtorKind::Const), . variant_ctor_id, . ) => { . let idx = adt_def.variant_index_with_ctor_id(variant_ctor_id); . let (d, o) = adt_def.discriminant_def_for_variant(idx); . use rustc_middle::ty::util::IntTypeExt; -- line 682 ---------------------------------------- -- line 683 ---------------------------------------- . let ty = adt_def.repr.discr_type(); . let ty = ty.to_ty(self.tcx()); . Some((d, o, ty)) . } . _ => None, . }, . ) . } else { 32 ( 0.00%) None . }; . 30 ( 0.00%) let source = if let Some((did, offset, var_ty)) = var { . let mk_const = |literal| Expr { . temp_lifetime, . ty: var_ty, . span: expr.span, . kind: ExprKind::Literal { literal, user_ty: None, const_id: None }, . }; . let offset = self.thir.exprs.push(mk_const(ty::Const::from_bits( . self.tcx, -- line 702 ---------------------------------------- -- line 723 ---------------------------------------- . ty: var_ty, . span: expr.span, . kind: bin, . }) . } . None => offset, . } . } else { 10 ( 0.00%) self.mirror_expr(source) . }; . . ExprKind::Cast { source: source } . }; . 52 ( 0.00%) if let Some(user_ty) = user_ty { . // NOTE: Creating a new Expr and wrapping a Cast inside of it may be . // inefficient, revisit this when performance becomes an issue. . let cast_expr = self.thir.exprs.push(Expr { . temp_lifetime, . ty: expr_ty, . span: expr.span, . kind: cast, . }); . debug!("make_mirror_unadjusted: (cast) user_ty={:?}", user_ty); . . ExprKind::ValueTypeAscription { source: cast_expr, user_ty: Some(*user_ty) } . } else { 104 ( 0.00%) cast . } . } . hir::ExprKind::Type(ref source, ref ty) => { . let user_provided_types = self.typeck_results.user_provided_types(); . let user_ty = user_provided_types.get(ty.hir_id).copied(); . debug!("make_mirror_unadjusted: (type) user_ty={:?}", user_ty); . let mirrored = self.mirror_expr(source); . if source.is_syntactic_place_expr() { . ExprKind::PlaceTypeAscription { source: mirrored, user_ty } . } else { . ExprKind::ValueTypeAscription { source: mirrored, user_ty } . } . } . hir::ExprKind::DropTemps(ref source) => { 444 ( 0.00%) ExprKind::Use { source: self.mirror_expr(source) } . } . hir::ExprKind::Box(ref value) => ExprKind::Box { value: self.mirror_expr(value) }, . hir::ExprKind::Array(ref fields) => { 65 ( 0.00%) ExprKind::Array { fields: self.mirror_exprs(fields) } . } 28,530 ( 0.00%) hir::ExprKind::Tup(ref fields) => ExprKind::Tuple { fields: self.mirror_exprs(fields) }, . . hir::ExprKind::Yield(ref v, _) => ExprKind::Yield { value: self.mirror_expr(v) }, . hir::ExprKind::Err => unreachable!(), . }; . 890,562 ( 0.05%) Expr { temp_lifetime, ty: expr_ty, span: expr.span, kind } 209,544 ( 0.01%) } . 5,049 ( 0.00%) fn user_substs_applied_to_res( . &mut self, . hir_id: hir::HirId, . res: Res, . ) -> Option> { . debug!("user_substs_applied_to_res: res={:?}", res); 3,366 ( 0.00%) let user_provided_type = match res { . // A reference to something callable -- e.g., a fn, method, or . // a tuple-struct or tuple-variant. This has the type of a . // `Fn` but with the user-given substitutions. . Res::Def(DefKind::Fn, _) . | Res::Def(DefKind::AssocFn, _) . | Res::Def(DefKind::Ctor(_, CtorKind::Fn), _) . | Res::Def(DefKind::Const, _) . | Res::Def(DefKind::AssocConst, _) => { 3,927 ( 0.00%) self.typeck_results().user_provided_types().get(hir_id).copied() . } . . // A unit struct/variant which is used as a value (e.g., . // `None`). This has the type of the enum/struct that defines . // this variant -- but with the substitutions given by the . // user. . Res::Def(DefKind::Ctor(_, CtorKind::Const), _) => { . self.user_substs_applied_to_ty_of_hir_id(hir_id) -- line 803 ---------------------------------------- -- line 805 ---------------------------------------- . . // `Self` is used in expression as a tuple struct constructor or a unit struct constructor . Res::SelfCtor(_) => self.user_substs_applied_to_ty_of_hir_id(hir_id), . . _ => bug!("user_substs_applied_to_res: unexpected res {:?} at {:?}", res, hir_id), . }; . debug!("user_substs_applied_to_res: user_provided_type={:?}", user_provided_type); . user_provided_type 3,366 ( 0.00%) } . 4,082 ( 0.00%) fn method_callee( . &mut self, . expr: &hir::Expr<'_>, . span: Span, . overloaded_callee: Option<(DefId, SubstsRef<'tcx>)>, . ) -> Expr<'tcx> { 1,884 ( 0.00%) let temp_lifetime = self.region_scope_tree.temporary_scope(expr.hir_id.local_id); 2,512 ( 0.00%) let (def_id, substs, user_ty) = match overloaded_callee { . Some((def_id, substs)) => (def_id, substs, None), . None => { . let (kind, def_id) = 2,826 ( 0.00%) self.typeck_results().type_dependent_def(expr.hir_id).unwrap_or_else(|| { . span_bug!(expr.span, "no type-dependent def for method callee") . }); 4,710 ( 0.00%) let user_ty = self.user_substs_applied_to_res(expr.hir_id, Res::Def(kind, def_id)); . debug!("method_callee: user_ty={:?}", user_ty); 4,710 ( 0.00%) (def_id, self.typeck_results().node_substs(expr.hir_id), user_ty) . } . }; . let ty = self.tcx().mk_fn_def(def_id, substs); 4,082 ( 0.00%) Expr { . temp_lifetime, . ty, . span, . kind: ExprKind::Literal { . literal: ty::Const::zero_sized(self.tcx(), ty), 1,884 ( 0.00%) user_ty, . const_id: None, . }, . } 2,512 ( 0.00%) } . 3,123 ( 0.00%) fn convert_arm(&mut self, arm: &'tcx hir::Arm<'tcx>) -> ArmId { 2,776 ( 0.00%) let arm = Arm { 1,041 ( 0.00%) pattern: self.pattern_from_hir(&arm.pat), 60 ( 0.00%) guard: arm.guard.as_ref().map(|g| match g { 30 ( 0.00%) hir::Guard::If(ref e) => Guard::If(self.mirror_expr(e)), . hir::Guard::IfLet(ref pat, ref e) => { . Guard::IfLet(self.pattern_from_hir(pat), self.mirror_expr(e)) . } . }), 347 ( 0.00%) body: self.mirror_expr(arm.body), 694 ( 0.00%) lint_level: LintLevel::Explicit(arm.hir_id), . scope: region::Scope { id: arm.hir_id.local_id, data: region::ScopeData::Node }, 347 ( 0.00%) span: arm.span, . }; 5,205 ( 0.00%) self.thir.arms.push(arm) 3,123 ( 0.00%) } . . fn convert_path_expr(&mut self, expr: &'tcx hir::Expr<'tcx>, res: Res) -> ExprKind<'tcx> { 44,744 ( 0.00%) let substs = self.typeck_results().node_substs(expr.hir_id); 70,254 ( 0.00%) match res { . // A regular function, constructor function or a constant. . Res::Def(DefKind::Fn, _) . | Res::Def(DefKind::AssocFn, _) . | Res::Def(DefKind::Ctor(_, CtorKind::Fn), _) . | Res::SelfCtor(..) => { 2,360 ( 0.00%) let user_ty = self.user_substs_applied_to_res(expr.hir_id, res); . debug!("convert_path_expr: user_ty={:?}", user_ty); 236 ( 0.00%) ExprKind::Literal { . literal: ty::Const::zero_sized( 472 ( 0.00%) self.tcx, 708 ( 0.00%) self.typeck_results().node_type(expr.hir_id), . ), 1,888 ( 0.00%) user_ty, . const_id: None, . } . } . . Res::Def(DefKind::ConstParam, def_id) => { . let hir_id = self.tcx.hir().local_def_id_to_hir_id(def_id.expect_local()); . let item_id = self.tcx.hir().get_parent_node(hir_id); . let item_def_id = self.tcx.hir().local_def_id(item_id); -- line 887 ---------------------------------------- -- line 895 ---------------------------------------- . ty: self.typeck_results().node_type(expr.hir_id), . }), . user_ty: None, . const_id: Some(def_id), . } . } . . Res::Def(DefKind::Const, def_id) | Res::Def(DefKind::AssocConst, def_id) => { 99 ( 0.00%) let user_ty = self.user_substs_applied_to_res(expr.hir_id, res); . debug!("convert_path_expr: (const) user_ty={:?}", user_ty); 55 ( 0.00%) ExprKind::Literal { 132 ( 0.00%) literal: self.tcx.mk_const(ty::Const { . val: ty::ConstKind::Unevaluated(ty::Unevaluated::new( . ty::WithOptConstParam::unknown(def_id), . substs, . )), 33 ( 0.00%) ty: self.typeck_results().node_type(expr.hir_id), . }), 88 ( 0.00%) user_ty, . const_id: Some(def_id), . } . } . 25,510 ( 0.00%) Res::Def(DefKind::Ctor(_, CtorKind::Const), def_id) => { 25,510 ( 0.00%) let user_provided_types = self.typeck_results.user_provided_types(); 20,408 ( 0.00%) let user_provided_type = user_provided_types.get(expr.hir_id).copied(); . debug!("convert_path_expr: user_provided_type={:?}", user_provided_type); 20,408 ( 0.00%) let ty = self.typeck_results().node_type(expr.hir_id); 10,204 ( 0.00%) match ty.kind() { . // A unit struct/variant which is used as a value. . // We return a completely different ExprKind here to account for this special case. . ty::Adt(adt_def, substs) => ExprKind::Adt(Box::new(Adt { 5,102 ( 0.00%) adt_def, 25,510 ( 0.00%) variant_index: adt_def.variant_index_with_ctor_id(def_id), 5,102 ( 0.00%) substs, . user_ty: user_provided_type, . fields: Box::new([]), . base: None, . })), . _ => bug!("unexpected ty: {:?}", ty), . } . } . -- line 937 ---------------------------------------- -- line 953 ---------------------------------------- . def_id: id, . } . }; . ExprKind::Deref { . arg: self.thir.exprs.push(Expr { ty, temp_lifetime, span: expr.span, kind }), . } . } . 8,344 ( 0.00%) Res::Local(var_hir_id) => self.convert_var(var_hir_id), . . _ => span_bug!(expr.span, "res `{:?}` not yet implemented", res), . } . } . 10,530 ( 0.00%) fn convert_var(&mut self, var_hir_id: hir::HirId) -> ExprKind<'tcx> { . // We want upvars here not captures. . // Captures will be handled in MIR. . let is_upvar = self . .tcx . .upvars_mentioned(self.body_owner) . .map_or(false, |upvars| upvars.contains_key(&var_hir_id)); . . debug!( . "convert_var({:?}): is_upvar={}, body_owner={:?}", . var_hir_id, is_upvar, self.body_owner . ); . 45 ( 0.00%) if is_upvar { 140 ( 0.00%) ExprKind::UpvarRef { closure_def_id: self.body_owner, var_hir_id } . } else { 3,099 ( 0.00%) ExprKind::VarRef { id: var_hir_id } . } 8,424 ( 0.00%) } . 825 ( 0.00%) fn overloaded_operator( . &mut self, . expr: &'tcx hir::Expr<'tcx>, . args: Box<[ExprId]>, . ) -> ExprKind<'tcx> { 525 ( 0.00%) let fun = self.method_callee(expr, expr.span, None); 1,125 ( 0.00%) let fun = self.thir.exprs.push(fun); 525 ( 0.00%) ExprKind::Call { 375 ( 0.00%) ty: self.thir[fun].ty, . fun, . args, . from_hir_call: false, . fn_span: expr.span, . } 600 ( 0.00%) } . 294 ( 0.00%) fn overloaded_place( . &mut self, . expr: &'tcx hir::Expr<'tcx>, . place_ty: Ty<'tcx>, . overloaded_callee: Option<(DefId, SubstsRef<'tcx>)>, . args: Box<[ExprId]>, . span: Span, . ) -> ExprKind<'tcx> { . // For an overloaded *x or x[y] expression of type T, the method . // call returns an &T and we must add the deref so that the types . // line up (this is because `*x` and `x[y]` represent places): . . // Reconstruct the output assuming it's a reference with the . // same region and mutability as the receiver. This holds for . // `Deref(Mut)::Deref(_mut)` and `Index(Mut)::index(_mut)`. 168 ( 0.00%) let (region, mutbl) = match *self.thir[args[0]].ty.kind() { 42 ( 0.00%) ty::Ref(region, _, mutbl) => (region, mutbl), . _ => span_bug!(span, "overloaded_place: receiver is not a reference"), . }; 21 ( 0.00%) let ref_ty = self.tcx.mk_ref(region, ty::TypeAndMut { ty: place_ty, mutbl }); . . // construct the complete expression `foo()` for the overloaded call, . // which will yield the &T type 84 ( 0.00%) let temp_lifetime = self.region_scope_tree.temporary_scope(expr.hir_id.local_id); 126 ( 0.00%) let fun = self.method_callee(expr, span, overloaded_callee); 294 ( 0.00%) let fun = self.thir.exprs.push(fun); 126 ( 0.00%) let fun_ty = self.thir[fun].ty; 294 ( 0.00%) let ref_expr = self.thir.exprs.push(Expr { . temp_lifetime, . ty: ref_ty, . span, . kind: ExprKind::Call { ty: fun_ty, fun, args, from_hir_call: false, fn_span: span }, . }); . . // construct and return a deref wrapper `*foo()` 42 ( 0.00%) ExprKind::Deref { arg: ref_expr } 168 ( 0.00%) } . 110 ( 0.00%) fn convert_captured_hir_place( . &mut self, . closure_expr: &'tcx hir::Expr<'tcx>, . place: HirPlace<'tcx>, . ) -> Expr<'tcx> { 40 ( 0.00%) let temp_lifetime = self.region_scope_tree.temporary_scope(closure_expr.hir_id.local_id); . let var_ty = place.base_ty; . . // The result of capture analysis in `rustc_typeck/check/upvar.rs`represents a captured path . // as it's seen for use within the closure and not at the time of closure creation. . // . // That is we see expect to see it start from a captured upvar and not something that is local . // to the closure's parent. 20 ( 0.00%) let var_hir_id = match place.base { 20 ( 0.00%) HirPlaceBase::Upvar(upvar_id) => upvar_id.var_path.hir_id, . base => bug!("Expected an upvar, found {:?}", base), . }; . 170 ( 0.00%) let mut captured_place_expr = Expr { . temp_lifetime, . ty: var_ty, 10 ( 0.00%) span: closure_expr.span, 50 ( 0.00%) kind: self.convert_var(var_hir_id), . }; . . for proj in place.projections.iter() { . let kind = match proj.kind { . HirProjectionKind::Deref => { . ExprKind::Deref { arg: self.thir.exprs.push(captured_place_expr) } . } . HirProjectionKind::Field(field, ..) => { -- line 1071 ---------------------------------------- -- line 1082 ---------------------------------------- . } . }; . . captured_place_expr = . Expr { temp_lifetime, ty: proj.ty, span: closure_expr.span, kind }; . } . . captured_place_expr 90 ( 0.00%) } . 100 ( 0.00%) fn capture_upvar( . &mut self, . closure_expr: &'tcx hir::Expr<'tcx>, . captured_place: &'tcx ty::CapturedPlace<'tcx>, . upvar_ty: Ty<'tcx>, . ) -> Expr<'tcx> { . let upvar_capture = captured_place.info.capture_kind; . let captured_place_expr = 70 ( 0.00%) self.convert_captured_hir_place(closure_expr, captured_place.place.clone()); 30 ( 0.00%) let temp_lifetime = self.region_scope_tree.temporary_scope(closure_expr.hir_id.local_id); . 20 ( 0.00%) match upvar_capture { . ty::UpvarCapture::ByValue => captured_place_expr, . ty::UpvarCapture::ByRef(upvar_borrow) => { 50 ( 0.00%) let borrow_kind = match upvar_borrow { . ty::BorrowKind::ImmBorrow => BorrowKind::Shared, . ty::BorrowKind::UniqueImmBorrow => BorrowKind::Unique, . ty::BorrowKind::MutBorrow => BorrowKind::Mut { allow_two_phase_borrow: false }, . }; 70 ( 0.00%) Expr { . temp_lifetime, . ty: upvar_ty, 10 ( 0.00%) span: closure_expr.span, . kind: ExprKind::Borrow { . borrow_kind, 150 ( 0.00%) arg: self.thir.exprs.push(captured_place_expr), . }, . } . } . } 90 ( 0.00%) } . . /// Converts a list of named fields (i.e., for struct-like struct/enum ADTs) into FieldExpr. . fn field_refs(&mut self, fields: &'tcx [hir::ExprField<'tcx>]) -> Box<[FieldExpr]> { . fields . .iter() . .map(|field| FieldExpr { 249 ( 0.00%) name: Field::new(self.tcx.field_index(field.hir_id, self.typeck_results)), . expr: self.mirror_expr(field.expr), . }) . .collect() . } . } . . trait ToBorrowKind { . fn to_borrow_kind(&self) -> BorrowKind; . } . . impl ToBorrowKind for AutoBorrowMutability { . fn to_borrow_kind(&self) -> BorrowKind { . use rustc_middle::ty::adjustment::AllowTwoPhase; 4,620 ( 0.00%) match *self { . AutoBorrowMutability::Mut { allow_two_phase_borrow } => BorrowKind::Mut { . allow_two_phase_borrow: match allow_two_phase_borrow { . AllowTwoPhase::Yes => true, . AllowTwoPhase::No => false, . }, . }, . AutoBorrowMutability::Not => BorrowKind::Shared, . } -- line 1151 ---------------------------------------- -- line 1156 ---------------------------------------- . fn to_borrow_kind(&self) -> BorrowKind { . match *self { . hir::Mutability::Mut => BorrowKind::Mut { allow_two_phase_borrow: false }, . hir::Mutability::Not => BorrowKind::Shared, . } . } . } . 242 ( 0.00%) fn bin_op(op: hir::BinOpKind) -> BinOp { 1,089 ( 0.00%) match op { . hir::BinOpKind::Add => BinOp::Add, . hir::BinOpKind::Sub => BinOp::Sub, . hir::BinOpKind::Mul => BinOp::Mul, . hir::BinOpKind::Div => BinOp::Div, . hir::BinOpKind::Rem => BinOp::Rem, . hir::BinOpKind::BitXor => BinOp::BitXor, . hir::BinOpKind::BitAnd => BinOp::BitAnd, . hir::BinOpKind::BitOr => BinOp::BitOr, -- line 1173 ---------------------------------------- -- line 1176 ---------------------------------------- . hir::BinOpKind::Eq => BinOp::Eq, . hir::BinOpKind::Lt => BinOp::Lt, . hir::BinOpKind::Le => BinOp::Le, . hir::BinOpKind::Ne => BinOp::Ne, . hir::BinOpKind::Ge => BinOp::Ge, . hir::BinOpKind::Gt => BinOp::Gt, . _ => bug!("no equivalent for ast binop {:?}", op), . } 242 ( 0.00%) } 351,435 ( 0.02%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_ast/src/token.rs -------------------------------------------------------------------------------- Ir -- line 12 ---------------------------------------- . use rustc_data_structures::sync::Lrc; . use rustc_macros::HashStable_Generic; . use rustc_span::symbol::{kw, sym}; . use rustc_span::symbol::{Ident, Symbol}; . use rustc_span::{self, edition::Edition, Span, DUMMY_SP}; . use std::borrow::Cow; . use std::{fmt, mem}; . 8,124 ( 0.00%) #[derive(Clone, Copy, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)] . pub enum CommentKind { . Line, . Block, . } . 159 ( 0.00%) #[derive(Clone, PartialEq, Encodable, Decodable, Hash, Debug, Copy)] . #[derive(HashStable_Generic)] . pub enum BinOpToken { . Plus, . Minus, . Star, . Slash, . Percent, . Caret, . And, . Or, . Shl, . Shr, . } . . /// A delimiter token. 36,033 ( 0.00%) #[derive(Clone, PartialEq, Eq, Encodable, Decodable, Hash, Debug, Copy)] . #[derive(HashStable_Generic)] . pub enum DelimToken { . /// A round parenthesis (i.e., `(` or `)`). . Paren, . /// A square bracket (i.e., `[` or `]`). . Bracket, . /// A curly brace (i.e., `{` or `}`). . Brace, . /// An empty delimiter. . NoDelim, . } . 865 ( 0.00%) #[derive(Clone, Copy, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)] . pub enum LitKind { . Bool, // AST only, must never appear in a `Token` . Byte, . Char, . Integer, . Float, . Str, . StrRaw(u16), // raw string delimited by `n` hash symbols . ByteStr, . ByteStrRaw(u16), // raw byte string delimited by `n` hash symbols . Err, . } . . /// A literal token. 29,241 ( 0.00%) #[derive(Clone, Copy, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)] . pub struct Lit { . pub kind: LitKind, . pub symbol: Symbol, . pub suffix: Option, . } . . impl fmt::Display for Lit { 56,635 ( 0.00%) fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { 101,943 ( 0.01%) let Lit { kind, symbol, suffix } = *self; . match kind { . Byte => write!(f, "b'{}'", symbol)?, 33,966 ( 0.00%) Char => write!(f, "'{}'", symbol)?, . Str => write!(f, "\"{}\"", symbol)?, . StrRaw(n) => write!( . f, . "r{delim}\"{string}\"{delim}", . delim = "#".repeat(n as usize), . string = symbol . )?, . ByteStr => write!(f, "b\"{}\"", symbol)?, . ByteStrRaw(n) => write!( . f, . "br{delim}\"{string}\"{delim}", . delim = "#".repeat(n as usize), . string = symbol . )?, 15 ( 0.00%) Integer | Float | Bool | Err => write!(f, "{}", symbol)?, . } . 22,654 ( 0.00%) if let Some(suffix) = suffix { . write!(f, "{}", suffix)?; . } . . Ok(()) 56,635 ( 0.00%) } . } . . impl LitKind { . /// An English article for the literal token kind. . pub fn article(self) -> &'static str { . match self { . Integer | Err => "an", . _ => "a", -- line 113 ---------------------------------------- -- line 130 ---------------------------------------- . crate fn may_have_suffix(self) -> bool { . matches!(self, Integer | Float | Err) . } . } . . impl Lit { . pub fn new(kind: LitKind, symbol: Symbol, suffix: Option) -> Lit { . Lit { kind, symbol, suffix } 80,520 ( 0.00%) } . } . 156 ( 0.00%) pub fn ident_can_begin_expr(name: Symbol, span: Span, is_raw: bool) -> bool { 273 ( 0.00%) let ident_token = Token::new(Ident(name, is_raw), span); . 100 ( 0.00%) !ident_token.is_reserved_ident() . || ident_token.is_path_segment_keyword() . || [ . kw::Async, . kw::Do, . kw::Box, . kw::Break, . kw::Const, . kw::Continue, -- line 152 ---------------------------------------- -- line 161 ---------------------------------------- . kw::True, . kw::Try, . kw::Unsafe, . kw::While, . kw::Yield, . kw::Static, . ] . .contains(&name) 195 ( 0.00%) } . . fn ident_can_begin_type(name: Symbol, span: Span, is_raw: bool) -> bool { 210 ( 0.00%) let ident_token = Token::new(Ident(name, is_raw), span); . 76 ( 0.00%) !ident_token.is_reserved_ident() . || ident_token.is_path_segment_keyword() . || [kw::Underscore, kw::For, kw::Impl, kw::Fn, kw::Unsafe, kw::Extern, kw::Typeof, kw::Dyn] . .contains(&name) . } . 6,454,710 ( 0.38%) #[derive(Clone, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)] . pub enum TokenKind { . /* Expression-operator symbols. */ . Eq, . Lt, . Le, . EqEq, . Ne, . Ge, . Gt, . AndAnd, . OrOr, . Not, . Tilde, 26,937 ( 0.00%) BinOp(BinOpToken), 33 ( 0.00%) BinOpEq(BinOpToken), . . /* Structural symbols */ . At, . Dot, . DotDot, . DotDotDot, . DotDotEq, . Comma, -- line 203 ---------------------------------------- -- line 208 ---------------------------------------- . LArrow, . FatArrow, . Pound, . Dollar, . Question, . /// Used by proc macros for representing lifetimes, not generated by lexer right now. . SingleQuote, . /// An opening delimiter (e.g., `{`). 83,682 ( 0.00%) OpenDelim(DelimToken), . /// A closing delimiter (e.g., `}`). 137,769 ( 0.01%) CloseDelim(DelimToken), . . /* Literals */ 36,762 ( 0.00%) Literal(Lit), . . /// Identifier token. . /// Do not forget about `NtIdent` when you want to match on identifiers. . /// It's recommended to use `Token::(ident,uninterpolate,uninterpolated_span)` to . /// treat regular and interpolated identifiers in the same way. 12,040 ( 0.00%) Ident(Symbol, /* is_raw */ bool), . /// Lifetime identifier token. . /// Do not forget about `NtLifetime` when you want to match on lifetime identifiers. . /// It's recommended to use `Token::(lifetime,uninterpolate,uninterpolated_span)` to . /// treat regular and interpolated lifetime identifiers in the same way. 639 ( 0.00%) Lifetime(Symbol), . 34 ( 0.00%) Interpolated(Lrc), . . /// A doc comment token. . /// `Symbol` is the doc comment's data excluding its "quotes" (`///`, `/**`, etc) . /// similarly to symbols in string literal tokens. 1,458 ( 0.00%) DocComment(CommentKind, ast::AttrStyle, Symbol), . . Eof, . } . . // `TokenKind` is used a lot. Make sure it doesn't unintentionally get bigger. . #[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))] . rustc_data_structures::static_assert_size!(TokenKind, 16); . 209,164 ( 0.01%) #[derive(Clone, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)] . pub struct Token { 4,466 ( 0.00%) pub kind: TokenKind, 10 ( 0.00%) pub span: Span, . } . . impl TokenKind { . pub fn lit(kind: LitKind, symbol: Symbol, suffix: Option) -> TokenKind { . Literal(Lit::new(kind, symbol, suffix)) . } . . // An approximation to proc-macro-style single-character operators used by rustc parser. . // If the operator token can be broken into two tokens, the first of which is single-character, . // then this function performs that operation, otherwise it returns `None`. 6,435 ( 0.00%) pub fn break_two_token_op(&self) -> Option<(TokenKind, TokenKind)> { 25,760 ( 0.00%) Some(match *self { . Le => (Lt, Eq), . EqEq => (Eq, Eq), . Ne => (Not, Eq), . Ge => (Gt, Eq), . AndAnd => (BinOp(And), BinOp(And)), . OrOr => (BinOp(Or), BinOp(Or)), . BinOp(Shl) => (Lt, Lt), . BinOp(Shr) => (Gt, Gt), -- line 271 ---------------------------------------- -- line 280 ---------------------------------------- . BinOpEq(Shl) => (Lt, Le), . BinOpEq(Shr) => (Gt, Ge), . DotDot => (Dot, Dot), . DotDotDot => (Dot, DotDot), . ModSep => (Colon, Colon), . RArrow => (BinOp(Minus), Gt), . LArrow => (Lt, BinOp(Minus)), . FatArrow => (Eq, Gt), 6,430 ( 0.00%) _ => return None, . }) 6,435 ( 0.00%) } . . /// Returns tokens that are likely to be typed accidentally instead of the current token. . /// Enables better error recovery when the wrong token is found. . pub fn similar_tokens(&self) -> Option> { . match *self { . Comma => Some(vec![Dot, Lt, Semi]), . Semi => Some(vec![Colon, Comma]), . FatArrow => Some(vec![Eq, RArrow]), . _ => None, . } . } . . pub fn should_end_const_arg(&self) -> bool { 352 ( 0.00%) matches!(self, Gt | Ge | BinOp(Shr) | BinOpEq(Shr)) 88 ( 0.00%) } . } . . impl Token { 62,715 ( 0.00%) pub fn new(kind: TokenKind, span: Span) -> Self { 189,926 ( 0.01%) Token { kind, span } 62,715 ( 0.00%) } . . /// Some token that will be thrown away later. 495 ( 0.00%) pub fn dummy() -> Self { . Token::new(TokenKind::Question, DUMMY_SP) 495 ( 0.00%) } . . /// Recovers a `Token` from an `Ident`. This creates a raw identifier if necessary. . pub fn from_ast_ident(ident: Ident) -> Self { 1,104 ( 0.00%) Token::new(Ident(ident.name, ident.is_raw_guess()), ident.span) . } . . /// Return this token by value and leave a dummy token in its place. 41,829 ( 0.00%) pub fn take(&mut self) -> Self { . mem::replace(self, Token::dummy()) 41,829 ( 0.00%) } . . /// For interpolated tokens, returns a span of the fragment to which the interpolated . /// token refers. For all other tokens this is just a regular span. . /// It is particularly important to use this for identifiers and lifetimes . /// for which spans affect name resolution and edition checks. . /// Note that keywords are also identifiers, so they should use this . /// if they keep spans or perform edition checks. . pub fn uninterpolated_span(&self) -> Span { 1,020 ( 0.00%) match &self.kind { . Interpolated(nt) => nt.span(), 510 ( 0.00%) _ => self.span, . } 510 ( 0.00%) } . . pub fn is_op(&self) -> bool { 125,487 ( 0.01%) !matches!( 41,829 ( 0.00%) self.kind, . OpenDelim(..) . | CloseDelim(..) . | Literal(..) . | DocComment(..) . | Ident(..) . | Lifetime(..) . | Interpolated(..) . | Eof . ) 41,829 ( 0.00%) } . . pub fn is_like_plus(&self) -> bool { 3,840 ( 0.00%) matches!(self.kind, BinOp(Plus) | BinOpEq(Plus)) 768 ( 0.00%) } . . /// Returns `true` if the token can appear at the start of an expression. 89 ( 0.00%) pub fn can_begin_expr(&self) -> bool { 445 ( 0.00%) match self.uninterpolate().kind { 351 ( 0.00%) Ident(name, is_raw) => 117 ( 0.00%) ident_can_begin_expr(name, self.span, is_raw), // value name or keyword . OpenDelim(..) | // tuple, array or block . Literal(..) | // literal . Not | // operator not . BinOp(Minus) | // unary minus . BinOp(Star) | // dereference . BinOp(Or) | OrOr | // closure . BinOp(And) | // reference . AndAnd | // double reference -- line 371 ---------------------------------------- -- line 376 ---------------------------------------- . Lifetime(..) | // labeled loop . Pound => true, // expression attributes . Interpolated(ref nt) => matches!(**nt, NtLiteral(..) | . NtExpr(..) | . NtBlock(..) | . NtPath(..)), . _ => false, . } 178 ( 0.00%) } . . /// Returns `true` if the token can appear at the start of a type. 224 ( 0.00%) pub fn can_begin_type(&self) -> bool { 404 ( 0.00%) match self.uninterpolate().kind { 315 ( 0.00%) Ident(name, is_raw) => 35 ( 0.00%) ident_can_begin_type(name, self.span, is_raw), // type name or keyword . OpenDelim(Paren) | // tuple . OpenDelim(Bracket) | // array . Not | // never . BinOp(Star) | // raw pointer . BinOp(And) | // reference . AndAnd | // double reference . Question | // maybe bound in trait object . Lifetime(..) | // lifetime bound in trait object . Lt | BinOp(Shl) | // associated path . ModSep => true, // global path . Interpolated(ref nt) => matches!(**nt, NtTy(..) | NtPath(..)), . _ => false, . } 336 ( 0.00%) } . . /// Returns `true` if the token can appear at the start of a const param. . pub fn can_begin_const_arg(&self) -> bool { 250 ( 0.00%) match self.kind { . OpenDelim(Brace) => true, . Interpolated(ref nt) => matches!(**nt, NtExpr(..) | NtBlock(..) | NtLiteral(..)), 50 ( 0.00%) _ => self.can_begin_literal_maybe_minus(), . } . } . . /// Returns `true` if the token can appear at the start of a generic bound. . pub fn can_begin_bound(&self) -> bool { . self.is_path_start() . || self.is_lifetime() . || self.is_keyword(kw::For) -- line 419 ---------------------------------------- -- line 427 ---------------------------------------- . } . . /// Returns `true` if the token is any literal, a minus (which can prefix a literal, . /// for example a '-42', or one of the boolean idents). . /// . /// In other words, would this token be a valid start of `parse_literal_maybe_minus`? . /// . /// Keep this in sync with and `Lit::from_token`, excluding unary negation. 55 ( 0.00%) pub fn can_begin_literal_maybe_minus(&self) -> bool { 492 ( 0.00%) match self.uninterpolate().kind { . Literal(..) | BinOp(Minus) => true, 148 ( 0.00%) Ident(name, false) if name.is_bool_lit() => true, . Interpolated(ref nt) => match &**nt { . NtLiteral(_) => true, . NtExpr(e) => match &e.kind { . ast::ExprKind::Lit(_) => true, . ast::ExprKind::Unary(ast::UnOp::Neg, e) => { . matches!(&e.kind, ast::ExprKind::Lit(_)) . } . _ => false, . }, . _ => false, . }, . _ => false, . } 110 ( 0.00%) } . . // A convenience function for matching on identifiers during parsing. . // Turns interpolated identifier (`$i: ident`) or lifetime (`$l: lifetime`) token . // into the regular identifier or lifetime token it refers to, . // otherwise returns the original token. 24,433 ( 0.00%) pub fn uninterpolate(&self) -> Cow<'_, Token> { 409,680 ( 0.02%) match &self.kind { 36 ( 0.00%) Interpolated(nt) => match **nt { . NtIdent(ident, is_raw) => { . Cow::Owned(Token::new(Ident(ident.name, is_raw), ident.span)) . } . NtLifetime(ident) => Cow::Owned(Token::new(Lifetime(ident.name), ident.span)), . _ => Cow::Borrowed(self), . }, . _ => Cow::Borrowed(self), . } 24,433 ( 0.00%) } . . /// Returns an identifier if this token is an identifier. 86,572 ( 0.01%) pub fn ident(&self) -> Option<(Ident, /* is_raw */ bool)> { . let token = self.uninterpolate(); 286,483 ( 0.02%) match token.kind { 744,387 ( 0.04%) Ident(name, is_raw) => Some((Ident::new(name, token.span), is_raw)), . _ => None, . } 593,932 ( 0.03%) } . . /// Returns a lifetime identifier if this token is a lifetime. 557 ( 0.00%) pub fn lifetime(&self) -> Option { . let token = self.uninterpolate(); 1,814 ( 0.00%) match token.kind { 2,264 ( 0.00%) Lifetime(name) => Some(Ident::new(name, token.span)), . _ => None, . } 3,899 ( 0.00%) } . . /// Returns `true` if the token is an identifier. . pub fn is_ident(&self) -> bool { . self.ident().is_some() 1,008 ( 0.00%) } . . /// Returns `true` if the token is a lifetime. 350 ( 0.00%) pub fn is_lifetime(&self) -> bool { . self.lifetime().is_some() 700 ( 0.00%) } . . /// Returns `true` if the token is an identifier whose name is the given . /// string slice. 6,059 ( 0.00%) pub fn is_ident_named(&self, name: Symbol) -> bool { . self.ident().map_or(false, |(ident, _)| ident.name == name) 12,118 ( 0.00%) } . . /// Returns `true` if the token is an interpolated path. . fn is_path(&self) -> bool { 28,484 ( 0.00%) if let Interpolated(ref nt) = self.kind { . if let NtPath(..) = **nt { . return true; . } . } . false . } . . /// Would `maybe_whole_expr` in `parser.rs` return `Ok(..)`? -- line 515 ---------------------------------------- -- line 522 ---------------------------------------- . } . } . . false . } . . // Is the token an interpolated block (`$b:block`)? . pub fn is_whole_block(&self) -> bool { 112 ( 0.00%) if let Interpolated(ref nt) = self.kind { . if let NtBlock(..) = **nt { . return true; . } . } . false 56 ( 0.00%) } . . /// Returns `true` if the token is either the `mut` or `const` keyword. . pub fn is_mutability(&self) -> bool { . self.is_keyword(kw::Mut) || self.is_keyword(kw::Const) . } . 550 ( 0.00%) pub fn is_qpath_start(&self) -> bool { 14,792 ( 0.00%) self == &Lt || self == &BinOp(Shl) . } . 28,484 ( 0.00%) pub fn is_path_start(&self) -> bool { 42,634 ( 0.00%) self == &ModSep . || self.is_qpath_start() . || self.is_path() . || self.is_path_segment_keyword() 6,873 ( 0.00%) || self.is_ident() && !self.is_reserved_ident() 35,605 ( 0.00%) } . . /// Returns `true` if the token is a given keyword, `kw`. 30,811 ( 0.00%) pub fn is_keyword(&self, kw: Symbol) -> bool { . self.is_non_raw_ident_where(|id| id.name == kw) 61,622 ( 0.00%) } . 460 ( 0.00%) pub fn is_path_segment_keyword(&self) -> bool { . self.is_non_raw_ident_where(Ident::is_path_segment_keyword) . } . . // Returns true for reserved identifiers used internally for elided lifetimes, . // unnamed method parameters, crate root module, error recovery etc. 151 ( 0.00%) pub fn is_special_ident(&self) -> bool { . self.is_non_raw_ident_where(Ident::is_special) . } . . /// Returns `true` if the token is a keyword used in the language. 151 ( 0.00%) pub fn is_used_keyword(&self) -> bool { . self.is_non_raw_ident_where(Ident::is_used_keyword) . } . . /// Returns `true` if the token is a keyword reserved for possible future use. 151 ( 0.00%) pub fn is_unused_keyword(&self) -> bool { . self.is_non_raw_ident_where(Ident::is_unused_keyword) . } . . /// Returns `true` if the token is either a special identifier or a keyword. . pub fn is_reserved_ident(&self) -> bool { . self.is_non_raw_ident_where(Ident::is_reserved) . } . . /// Returns `true` if the token is the identifier `true` or `false`. 460 ( 0.00%) pub fn is_bool_lit(&self) -> bool { 920 ( 0.00%) self.is_non_raw_ident_where(|id| id.name.is_bool_lit()) . } . . pub fn is_numeric_lit(&self) -> bool { . matches!( . self.kind, . Literal(Lit { kind: LitKind::Integer, .. }) | Literal(Lit { kind: LitKind::Float, .. }) . ) . } . . /// Returns `true` if the token is a non-raw identifier for which `pred` holds. 28 ( 0.00%) pub fn is_non_raw_ident_where(&self, pred: impl FnOnce(Ident) -> bool) -> bool { 541,391 ( 0.03%) match self.ident() { 6,848 ( 0.00%) Some((id, false)) => pred(id), . _ => false, . } 35 ( 0.00%) } . 133,370 ( 0.01%) pub fn glue(&self, joint: &Token) -> Option { 66,685 ( 0.00%) let kind = match self.kind { 1,295 ( 0.00%) Eq => match joint.kind { . Eq => EqEq, . Gt => FatArrow, . _ => return None, . }, 73 ( 0.00%) Lt => match joint.kind { . Eq => Le, . Lt => BinOp(Shl), . Le => BinOpEq(Shl), . BinOp(Minus) => LArrow, . _ => return None, . }, 195 ( 0.00%) Gt => match joint.kind { . Eq => Ge, . Gt => BinOp(Shr), . Ge => BinOpEq(Shr), . _ => return None, . }, 12 ( 0.00%) Not => match joint.kind { . Eq => Ne, . _ => return None, . }, 1,228 ( 0.00%) BinOp(op) => match joint.kind { . Eq => BinOpEq(op), 21 ( 0.00%) BinOp(And) if op == And => AndAnd, 23 ( 0.00%) BinOp(Or) if op == Or => OrOr, 95 ( 0.00%) Gt if op == Minus => RArrow, . _ => return None, . }, 102 ( 0.00%) Dot => match joint.kind { . Dot => DotDot, . DotDot => DotDotDot, . _ => return None, . }, 9 ( 0.00%) DotDot => match joint.kind { . Dot => DotDotDot, . Eq => DotDotEq, . _ => return None, . }, 788 ( 0.00%) Colon => match joint.kind { . Colon => ModSep, . _ => return None, . }, . SingleQuote => match joint.kind { . Ident(name, false) => Lifetime(Symbol::intern(&format!("'{}", name))), . _ => return None, . }, . . Le | EqEq | Ne | Ge | AndAnd | OrOr | Tilde | BinOpEq(..) | At | DotDotDot . | DotDotEq | Comma | Semi | ModSep | RArrow | LArrow | FatArrow | Pound | Dollar . | Question | OpenDelim(..) | CloseDelim(..) | Literal(..) | Ident(..) . | Lifetime(..) | Interpolated(..) | DocComment(..) | Eof => return None, . }; . 11,544 ( 0.00%) Some(Token::new(kind, self.span.to(joint.span))) 120,033 ( 0.01%) } . } . . impl PartialEq for Token { . fn eq(&self, rhs: &TokenKind) -> bool { 358,086 ( 0.02%) self.kind == *rhs . } . } . . #[derive(Clone, Encodable, Decodable)] . /// For interpolation during macro expansion. . pub enum Nonterminal { . NtItem(P), . NtBlock(P), -- line 675 ---------------------------------------- -- line 711 ---------------------------------------- . Path, . Vis, . TT, . } . . impl NonterminalKind { . /// The `edition` closure is used to get the edition for the given symbol. Doing . /// `span.edition()` is expensive, so we do it lazily. 84 ( 0.00%) pub fn from_symbol( . symbol: Symbol, . edition: impl FnOnce() -> Edition, . ) -> Option { 180 ( 0.00%) Some(match symbol { . sym::item => NonterminalKind::Item, . sym::block => NonterminalKind::Block, . sym::stmt => NonterminalKind::Stmt, . sym::pat => match edition() { . Edition::Edition2015 | Edition::Edition2018 => { . NonterminalKind::PatParam { inferred: true } . } . Edition::Edition2021 => NonterminalKind::PatWithOr, -- line 731 ---------------------------------------- -- line 737 ---------------------------------------- . sym::lifetime => NonterminalKind::Lifetime, . sym::literal => NonterminalKind::Literal, . sym::meta => NonterminalKind::Meta, . sym::path => NonterminalKind::Path, . sym::vis => NonterminalKind::Vis, . sym::tt => NonterminalKind::TT, . _ => return None, . }) 84 ( 0.00%) } . fn symbol(self) -> Symbol { . match self { . NonterminalKind::Item => sym::item, . NonterminalKind::Block => sym::block, . NonterminalKind::Stmt => sym::stmt, . NonterminalKind::PatParam { inferred: false } => sym::pat_param, . NonterminalKind::PatParam { inferred: true } | NonterminalKind::PatWithOr => sym::pat, . NonterminalKind::Expr => sym::expr, -- line 753 ---------------------------------------- 2,178,981 ( 0.13%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/layout.rs -------------------------------------------------------------------------------- Ir -- line 23 ---------------------------------------- . use std::iter; . use std::num::NonZeroUsize; . use std::ops::Bound; . . use rand::{seq::SliceRandom, SeedableRng}; . use rand_xoshiro::Xoshiro128StarStar; . . pub fn provide(providers: &mut ty::query::Providers) { 6 ( 0.00%) *providers = . ty::query::Providers { layout_of, fn_abi_of_fn_ptr, fn_abi_of_instance, ..*providers }; . } . . pub trait IntegerExt { . fn to_ty<'tcx>(&self, tcx: TyCtxt<'tcx>, signed: bool) -> Ty<'tcx>; . fn from_attr(cx: &C, ity: attr::IntType) -> Integer; . fn from_int_ty(cx: &C, ity: ty::IntTy) -> Integer; . fn from_uint_ty(cx: &C, uty: ty::UintTy) -> Integer; -- line 39 ---------------------------------------- -- line 44 ---------------------------------------- . min: i128, . max: i128, . ) -> (Integer, bool); . } . . impl IntegerExt for Integer { . #[inline] . fn to_ty<'tcx>(&self, tcx: TyCtxt<'tcx>, signed: bool) -> Ty<'tcx> { 241,790 ( 0.01%) match (*self, signed) { . (I8, false) => tcx.types.u8, . (I16, false) => tcx.types.u16, . (I32, false) => tcx.types.u32, . (I64, false) => tcx.types.u64, . (I128, false) => tcx.types.u128, . (I8, true) => tcx.types.i8, . (I16, true) => tcx.types.i16, . (I32, true) => tcx.types.i32, . (I64, true) => tcx.types.i64, . (I128, true) => tcx.types.i128, . } . } . . /// Gets the Integer type from an attr::IntType. 72 ( 0.00%) fn from_attr(cx: &C, ity: attr::IntType) -> Integer { . let dl = cx.data_layout(); . 180 ( 0.00%) match ity { . attr::SignedInt(ast::IntTy::I8) | attr::UnsignedInt(ast::UintTy::U8) => I8, . attr::SignedInt(ast::IntTy::I16) | attr::UnsignedInt(ast::UintTy::U16) => I16, . attr::SignedInt(ast::IntTy::I32) | attr::UnsignedInt(ast::UintTy::U32) => I32, . attr::SignedInt(ast::IntTy::I64) | attr::UnsignedInt(ast::UintTy::U64) => I64, . attr::SignedInt(ast::IntTy::I128) | attr::UnsignedInt(ast::UintTy::U128) => I128, . attr::SignedInt(ast::IntTy::Isize) | attr::UnsignedInt(ast::UintTy::Usize) => { 36 ( 0.00%) dl.ptr_sized_integer() . } . } 72 ( 0.00%) } . . fn from_int_ty(cx: &C, ity: ty::IntTy) -> Integer { . match ity { . ty::IntTy::I8 => I8, . ty::IntTy::I16 => I16, . ty::IntTy::I32 => I32, . ty::IntTy::I64 => I64, . ty::IntTy::I128 => I128, 122,194 ( 0.01%) ty::IntTy::Isize => cx.data_layout().ptr_sized_integer(), . } . } . fn from_uint_ty(cx: &C, ity: ty::UintTy) -> Integer { . match ity { . ty::UintTy::U8 => I8, . ty::UintTy::U16 => I16, . ty::UintTy::U32 => I32, . ty::UintTy::U64 => I64, . ty::UintTy::U128 => I128, 2 ( 0.00%) ty::UintTy::Usize => cx.data_layout().ptr_sized_integer(), . } . } . . /// Finds the appropriate Integer type and signedness for the given . /// signed discriminant range and `#[repr]` attribute. . /// N.B.: `u128` values above `i128::MAX` will be treated as signed, but . /// that shouldn't affect anything, other than maybe debuginfo. 54 ( 0.00%) fn repr_discr<'tcx>( . tcx: TyCtxt<'tcx>, . ty: Ty<'tcx>, . repr: &ReprOptions, . min: i128, . max: i128, . ) -> (Integer, bool) { . // Theoretically, negative values could be larger in unsigned representation . // than the unsigned representation of the signed minimum. However, if there . // are any negative values, the only valid unsigned representation is u128 . // which can fit all i128 values, so the result remains unaffected. . let unsigned_fit = Integer::fit_unsigned(cmp::max(min as u128, max as u128)); . let signed_fit = cmp::max(Integer::fit_signed(min), Integer::fit_signed(max)); . 54 ( 0.00%) if let Some(ity) = repr.int { . let discr = Integer::from_attr(&tcx, ity); . let fit = if ity.is_signed() { signed_fit } else { unsigned_fit }; . if discr < fit { . bug!( . "Integer::repr_discr: `#[repr]` hint too small for \ . discriminant range of enum `{}", . ty . ) . } . return (discr, ity.is_signed()); . } . 36 ( 0.00%) let at_least = if repr.c() { . // This is usually I32, however it can be different on some platforms, . // notably hexagon and arm-none/thumb-none . tcx.data_layout().c_enum_min_size . } else { . // repr(Rust) enums try to be as small as possible . I8 . }; . . // If there are no negative values, we can use the unsigned fit. 162 ( 0.00%) if min >= 0 { . (cmp::max(unsigned_fit, at_least), false) . } else { . (cmp::max(signed_fit, at_least), true) . } 108 ( 0.00%) } . } . . pub trait PrimitiveExt { . fn to_ty<'tcx>(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx>; . fn to_int_ty<'tcx>(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx>; . } . . impl PrimitiveExt for Primitive { . #[inline] . fn to_ty<'tcx>(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> { 203,106 ( 0.01%) match *self { . Int(i, signed) => i.to_ty(tcx, signed), . F32 => tcx.types.f32, . F64 => tcx.types.f64, . Pointer => tcx.mk_mut_ptr(tcx.mk_unit()), . } . } . . /// Return an *integer* type matching this primitive. . /// Useful in particular when dealing with enum discriminants. . #[inline] . fn to_int_ty<'tcx>(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> { 116,056 ( 0.01%) match *self { 58,028 ( 0.00%) Int(i, signed) => i.to_ty(tcx, signed), . Pointer => tcx.types.usize, . F32 | F64 => bug!("floats do not have an int type"), . } . } . } . . /// The first half of a fat pointer. . /// -- line 181 ---------------------------------------- -- line 215 ---------------------------------------- . "unable to determine layout for `{}` because `{}` cannot be normalized", . t, . e.get_type_for_failure() . ), . } . } . } . 1,088 ( 0.00%) #[instrument(skip(tcx, query), level = "debug")] . fn layout_of<'tcx>( . tcx: TyCtxt<'tcx>, . query: ty::ParamEnvAnd<'tcx, Ty<'tcx>>, . ) -> Result, LayoutError<'tcx>> { . ty::tls::with_related_context(tcx, move |icx| { 68 ( 0.00%) let (param_env, ty) = query.into_parts(); . debug!(?ty); . 272 ( 0.00%) if !tcx.recursion_limit().value_within_limit(icx.layout_depth) { . tcx.sess.fatal(&format!("overflow representing the type `{}`", ty)); . } . . // Update the ImplicitCtxt to increase the layout_depth 612 ( 0.00%) let icx = ty::tls::ImplicitCtxt { layout_depth: icx.layout_depth + 1, ..icx.clone() }; . . ty::tls::enter_context(&icx, |_| { 204 ( 0.00%) let param_env = param_env.with_reveal_all_normalized(tcx); . let unnormalized_ty = ty; . . // FIXME: We might want to have two different versions of `layout_of`: . // One that can be called after typecheck has completed and can use . // `normalize_erasing_regions` here and another one that can be called . // before typecheck has completed and uses `try_normalize_erasing_regions`. . let ty = match tcx.try_normalize_erasing_regions(param_env, ty) { . Ok(t) => t, . Err(normalization_error) => { . return Err(LayoutError::NormalizationFailure(ty, normalization_error)); . } . }; . 68 ( 0.00%) if ty != unnormalized_ty { . // Ensure this layout is also cached for the normalized type. . return tcx.layout_of(param_env.and(ty)); . } . 264 ( 0.00%) let cx = LayoutCx { tcx, param_env }; . 198 ( 0.00%) let layout = cx.layout_of_uncached(ty)?; . let layout = TyAndLayout { ty, layout }; . . cx.record_layout_for_printing(layout); . . // Type-level uninhabitedness should always imply ABI uninhabitedness. 66 ( 0.00%) if tcx.conservative_is_privately_uninhabited(param_env.and(ty)) { . assert!(layout.abi.is_uninhabited()); . } . 198 ( 0.00%) Ok(layout) . }) . }) . } . . pub struct LayoutCx<'tcx, C> { . pub tcx: C, . pub param_env: ty::ParamEnv<'tcx>, . } -- line 279 ---------------------------------------- -- line 291 ---------------------------------------- . // Invert a bijective mapping, i.e. `invert(map)[y] = x` if `map[x] = y`. . // This is used to go between `memory_index` (source field order to memory order) . // and `inverse_memory_index` (memory order to source field order). . // See also `FieldsShape::Arbitrary::memory_index` for more details. . // FIXME(eddyb) build a better abstraction for permutations, if possible. . fn invert_mapping(map: &[u32]) -> Vec { . let mut inverse = vec![0; map.len()]; . for i in 0..map.len() { 140 ( 0.00%) inverse[map[i] as usize] = i as u32; . } . inverse . } . . impl<'tcx> LayoutCx<'tcx, TyCtxt<'tcx>> { 90 ( 0.00%) fn scalar_pair(&self, a: Scalar, b: Scalar) -> Layout { . let dl = self.data_layout(); 70 ( 0.00%) let b_align = b.value.align(dl); 80 ( 0.00%) let align = a.value.align(dl).max(b_align).max(dl.aggregate_align); . let b_offset = a.value.size(dl).align_to(b_align.abi); . let size = (b_offset + b.value.size(dl)).align_to(align.abi); . . // HACK(nox): We iter on `b` and then `a` because `max_by_key` . // returns the last maximum. 120 ( 0.00%) let largest_niche = Niche::from_scalar(dl, b_offset, b) . .into_iter() 100 ( 0.00%) .chain(Niche::from_scalar(dl, Size::ZERO, a)) . .max_by_key(|niche| niche.available(dl)); . 190 ( 0.00%) Layout { . variants: Variants::Single { index: VariantIdx::new(0) }, . fields: FieldsShape::Arbitrary { 20 ( 0.00%) offsets: vec![Size::ZERO, b_offset], 20 ( 0.00%) memory_index: vec![0, 1], . }, 130 ( 0.00%) abi: Abi::ScalarPair(a, b), 100 ( 0.00%) largest_niche, . align, . size, . } 80 ( 0.00%) } . 2,148 ( 0.00%) fn univariant_uninterned( . &self, . ty: Ty<'tcx>, . fields: &[TyAndLayout<'_>], . repr: &ReprOptions, . kind: StructKind, . ) -> Result> { . let dl = self.data_layout(); 716 ( 0.00%) let pack = repr.pack; 179 ( 0.00%) if pack.is_some() && repr.align.is_some() { . self.tcx.sess.delay_span_bug(DUMMY_SP, "struct cannot be packed and aligned"); . return Err(LayoutError::Unknown(ty)); . } . 716 ( 0.00%) let mut align = if pack.is_some() { dl.i8_align } else { dl.aggregate_align }; . . let mut inverse_memory_index: Vec = (0..fields.len() as u32).collect(); . . let optimize = !repr.inhibit_struct_field_reordering_opt(); 179 ( 0.00%) if optimize { . let end = 1,253 ( 0.00%) if let StructKind::MaybeUnsized = kind { fields.len() - 1 } else { fields.len() }; . let optimizing = &mut inverse_memory_index[..end]; 179 ( 0.00%) let field_align = |f: &TyAndLayout<'_>| { 72 ( 0.00%) if let Some(pack) = pack { f.align.abi.min(pack) } else { f.align.abi } . }; . . // If `-Z randomize-layout` was enabled for the type definition we can shuffle . // the field ordering to try and catch some code making assumptions about layouts . // we don't guarantee . if repr.can_randomize_type_layout() { . // `ReprOptions.layout_seed` is a deterministic seed that we can use to . // randomize field ordering with . let mut rng = Xoshiro128StarStar::seed_from_u64(repr.field_shuffle_seed); . . // Shuffle the ordering of the fields . optimizing.shuffle(&mut rng); . . // Otherwise we just leave things alone and actually optimize the type's fields . } else { 358 ( 0.00%) match kind { . StructKind::AlwaysSized | StructKind::MaybeUnsized => { 60 ( 0.00%) optimizing.sort_by_key(|&x| { . // Place ZSTs first to avoid "interesting offsets", . // especially with only one or two non-ZST fields. 63 ( 0.00%) let f = &fields[x as usize]; 9 ( 0.00%) (!f.is_zst(), cmp::Reverse(field_align(f))) . }); . } . . StructKind::Prefixed(..) => { . // Sort in ascending alignment so that the layout stays optimal . // regardless of the prefix 835 ( 0.00%) optimizing.sort_by_key(|&x| field_align(&fields[x as usize])); . } . } . . // FIXME(Kixiron): We can always shuffle fields within a given alignment class . // regardless of the status of `-Z randomize-layout` . } . } . -- line 393 ---------------------------------------- -- line 399 ---------------------------------------- . // produce `memory_index` (see `invert_mapping`). . . let mut sized = true; . let mut offsets = vec![Size::ZERO; fields.len()]; . let mut offset = Size::ZERO; . let mut largest_niche = None; . let mut largest_niche_available = 0; . 537 ( 0.00%) if let StructKind::Prefixed(prefix_size, prefix_align) = kind { . let prefix_align = 1,169 ( 0.00%) if let Some(pack) = pack { prefix_align.min(pack) } else { prefix_align }; . align = align.max(AbiAndPrefAlign::new(prefix_align)); . offset = prefix_size.align_to(prefix_align); . } . 35 ( 0.00%) for &i in &inverse_memory_index { 375 ( 0.00%) let field = fields[i as usize]; 70 ( 0.00%) if !sized { . self.tcx.sess.delay_span_bug( . DUMMY_SP, . &format!( . "univariant: field #{} of `{}` comes after unsized field", . offsets.len(), . ty . ), . ); . } . 175 ( 0.00%) if field.is_unsized() { . sized = false; . } . . // Invariant: offset < dl.obj_size_bound() <= 1<<61 70 ( 0.00%) let field_align = if let Some(pack) = pack { . field.align.min(AbiAndPrefAlign::new(pack)) . } else { 105 ( 0.00%) field.align . }; . offset = offset.align_to(field_align.abi); . align = align.max(field_align); . . debug!("univariant offset: {:?} field: {:#?}", offset, field); 70 ( 0.00%) offsets[i as usize] = offset; . 35 ( 0.00%) if !repr.hide_niche() { 508 ( 0.00%) if let Some(mut niche) = field.largest_niche { . let available = niche.available(dl); 124 ( 0.00%) if available > largest_niche_available { . largest_niche_available = available; . niche.offset += offset; 208 ( 0.00%) largest_niche = Some(niche); . } . } . } . 35 ( 0.00%) offset = offset.checked_add(field.size, dl).ok_or(LayoutError::SizeOverflow(ty))?; . } . 373 ( 0.00%) if let Some(repr_align) = repr.align { . align = align.max(AbiAndPrefAlign::new(repr_align)); . } . . debug!("univariant min_size: {:?}", offset); . let min_size = offset; . . // As stated above, inverse_memory_index holds field indices by increasing offset. . // This makes it an already-sorted view of the offsets vec. . // To invert it, consider: . // If field 5 has offset 0, offsets[0] is 5, and memory_index[5] should be 0. . // Field 5 would be the first element, so memory_index is i: . // Note: if we didn't optimize, it's already right. . . let memory_index = 358 ( 0.00%) if optimize { invert_mapping(&inverse_memory_index) } else { inverse_memory_index }; . . let size = min_size.align_to(align.abi); 358 ( 0.00%) let mut abi = Abi::Aggregate { sized }; . . // Unpack newtype ABIs and find scalar pairs. 716 ( 0.00%) if sized && size.bytes() > 0 { . // All other fields must be ZSTs. . let mut non_zst_fields = fields.iter().enumerate().filter(|&(_, f)| !f.is_zst()); . 12 ( 0.00%) match (non_zst_fields.next(), non_zst_fields.next(), non_zst_fields.next()) { . // We have exactly one non-ZST field. . (Some((i, field)), None, None) => { . // Field fills the struct and it has a scalar or scalar pair ABI. 18 ( 0.00%) if offsets[i].bytes() == 0 && align.abi == field.align.abi && size == field.size . { 6 ( 0.00%) match field.abi { . // For plain scalars, or vectors of them, we can't unpack . // newtypes for `#[repr(C)]`, as that affects C ABIs. . Abi::Scalar(_) | Abi::Vector { .. } if optimize => { . abi = field.abi; . } . // But scalar pairs are Rust-specific and get . // treated as aggregates by C ABIs anyway. . Abi::ScalarPair(..) => { -- line 496 ---------------------------------------- -- line 503 ---------------------------------------- . . // Two non-ZST fields, and they're both scalars. . ( . Some((i, &TyAndLayout { layout: &Layout { abi: Abi::Scalar(a), .. }, .. })), . Some((j, &TyAndLayout { layout: &Layout { abi: Abi::Scalar(b), .. }, .. })), . None, . ) => { . // Order by the memory placement, not source order. 18 ( 0.00%) let ((i, a), (j, b)) = 14 ( 0.00%) if offsets[i] < offsets[j] { ((i, a), (j, b)) } else { ((j, b), (i, a)) }; 22 ( 0.00%) let pair = self.scalar_pair(a, b); 4 ( 0.00%) let pair_offsets = match pair.fields { 4 ( 0.00%) FieldsShape::Arbitrary { ref offsets, ref memory_index } => { 2 ( 0.00%) assert_eq!(memory_index, &[0, 1]); . offsets . } . _ => bug!(), . }; 18 ( 0.00%) if offsets[i] == pair_offsets[0] 2 ( 0.00%) && offsets[j] == pair_offsets[1] . && align == pair.align . && size == pair.size . { . // We can use `ScalarPair` only when it matches our . // already computed layout (including `#[repr(C)]`). 28 ( 0.00%) abi = pair.abi; . } 2 ( 0.00%) } . . _ => {} . } . } . 35 ( 0.00%) if fields.iter().any(|f| f.abi.is_uninhabited()) { . abi = Abi::Uninhabited; . } . 5,728 ( 0.00%) Ok(Layout { . variants: Variants::Single { index: VariantIdx::new(0) }, 1,790 ( 0.00%) fields: FieldsShape::Arbitrary { offsets, memory_index }, . abi, 1,969 ( 0.00%) largest_niche, . align, . size, . }) 1,790 ( 0.00%) } . 660 ( 0.00%) fn layout_of_uncached(&self, ty: Ty<'tcx>) -> Result<&'tcx Layout, LayoutError<'tcx>> { 132 ( 0.00%) let tcx = self.tcx; 66 ( 0.00%) let param_env = self.param_env; . let dl = self.data_layout(); 82 ( 0.00%) let scalar_unit = |value: Primitive| { 1 ( 0.00%) let size = value.size(dl); 56 ( 0.00%) assert!(size.bits() <= 128); 63 ( 0.00%) Scalar { value, valid_range: WrappingRange { start: 0, end: size.unsigned_int_max() } } 16 ( 0.00%) }; . let scalar = |value: Primitive| tcx.intern_layout(Layout::scalar(self, scalar_unit(value))); . . let univariant = |fields: &[TyAndLayout<'_>], repr: &ReprOptions, kind| { 231 ( 0.00%) Ok(tcx.intern_layout(self.univariant_uninterned(ty, fields, repr, kind)?)) . }; . debug_assert!(!ty.has_infer_types_or_consts()); . 512 ( 0.00%) Ok(match *ty.kind() { . // Basic scalars. . ty::Bool => tcx.intern_layout(Layout::scalar( . self, 6 ( 0.00%) Scalar { value: Int(I8, false), valid_range: WrappingRange { start: 0, end: 1 } }, . )), . ty::Char => tcx.intern_layout(Layout::scalar( . self, 12 ( 0.00%) Scalar { . value: Int(I32, false), . valid_range: WrappingRange { start: 0, end: 0x10FFFF }, . }, . )), 5 ( 0.00%) ty::Int(ity) => scalar(Int(Integer::from_int_ty(dl, ity), true)), 30 ( 0.00%) ty::Uint(ity) => scalar(Int(Integer::from_uint_ty(dl, ity), false)), . ty::Float(fty) => scalar(match fty { . ty::FloatTy::F32 => F32, . ty::FloatTy::F64 => F64, . }), . ty::FnPtr(_) => { . let mut ptr = scalar_unit(Pointer); . ptr.valid_range = ptr.valid_range.with_start(1); . tcx.intern_layout(Layout::scalar(self, ptr)) -- line 588 ---------------------------------------- -- line 594 ---------------------------------------- . fields: FieldsShape::Primitive, . abi: Abi::Uninhabited, . largest_niche: None, . align: dl.i8_align, . size: Size::ZERO, . }), . . // Potentially-wide pointers. 13 ( 0.00%) ty::Ref(_, pointee, _) | ty::RawPtr(ty::TypeAndMut { ty: pointee, .. }) => { . let mut data_ptr = scalar_unit(Pointer); . if !ty.is_unsafe_ptr() { . data_ptr.valid_range = data_ptr.valid_range.with_start(1); . } . . let pointee = tcx.normalize_erasing_regions(param_env, pointee); 104 ( 0.00%) if pointee.is_sized(tcx.at(DUMMY_SP), param_env) { 119 ( 0.00%) return Ok(tcx.intern_layout(Layout::scalar(self, data_ptr))); . } . 24 ( 0.00%) let unsized_part = tcx.struct_tail_erasing_lifetimes(pointee, param_env); 24 ( 0.00%) let metadata = match unsized_part.kind() { . ty::Foreign(..) => { . return Ok(tcx.intern_layout(Layout::scalar(self, data_ptr))); . } 40 ( 0.00%) ty::Slice(_) | ty::Str => scalar_unit(Int(dl.ptr_sized_integer(), false)), . ty::Dynamic(..) => { 2 ( 0.00%) let mut vtable = scalar_unit(Pointer); 2 ( 0.00%) vtable.valid_range = vtable.valid_range.with_start(1); 8 ( 0.00%) vtable . } . _ => return Err(LayoutError::Unknown(unsized_part)), . }; . . // Effectively a (ptr, meta) tuple. 126 ( 0.00%) tcx.intern_layout(self.scalar_pair(data_ptr, metadata)) . } . . // Arrays and slices. 24 ( 0.00%) ty::Array(element, mut count) => { 8 ( 0.00%) if count.has_projections() { . count = tcx.normalize_erasing_regions(param_env, count); . if count.has_projections() { . return Err(LayoutError::Unknown(ty)); . } . } . 32 ( 0.00%) let count = count.try_eval_usize(tcx, param_env).ok_or(LayoutError::Unknown(ty))?; 40 ( 0.00%) let element = self.layout_of(element)?; . let size = 40 ( 0.00%) element.size.checked_mul(count, dl).ok_or(LayoutError::SizeOverflow(ty))?; . . let abi = 64 ( 0.00%) if count != 0 && tcx.conservative_is_privately_uninhabited(param_env.and(ty)) { . Abi::Uninhabited . } else { . Abi::Aggregate { sized: true } . }; . 88 ( 0.00%) let largest_niche = if count != 0 { element.largest_niche } else { None }; . 176 ( 0.00%) tcx.intern_layout(Layout { . variants: Variants::Single { index: VariantIdx::new(0) }, 8 ( 0.00%) fields: FieldsShape::Array { stride: element.size, count }, . abi, . largest_niche, 8 ( 0.00%) align: element.align, . size, . }) . } 10 ( 0.00%) ty::Slice(element) => { 15 ( 0.00%) let element = self.layout_of(element)?; 55 ( 0.00%) tcx.intern_layout(Layout { . variants: Variants::Single { index: VariantIdx::new(0) }, 5 ( 0.00%) fields: FieldsShape::Array { stride: element.size, count: 0 }, . abi: Abi::Aggregate { sized: false }, . largest_niche: None, 5 ( 0.00%) align: element.align, . size: Size::ZERO, . }) . } . ty::Str => tcx.intern_layout(Layout { . variants: Variants::Single { index: VariantIdx::new(0) }, . fields: FieldsShape::Array { stride: Size::from_bytes(1), count: 0 }, . abi: Abi::Aggregate { sized: false }, . largest_niche: None, -- line 678 ---------------------------------------- -- line 702 ---------------------------------------- . let tys = substs.as_closure().upvar_tys(); . univariant( . &tys.map(|ty| self.layout_of(ty)).collect::, _>>()?, . &ReprOptions::default(), . StructKind::AlwaysSized, . )? . } . 11 ( 0.00%) ty::Tuple(tys) => { . let kind = 33 ( 0.00%) if tys.len() == 0 { StructKind::AlwaysSized } else { StructKind::MaybeUnsized }; . 11 ( 0.00%) univariant( 22 ( 0.00%) &tys.iter() . .map(|k| self.layout_of(k.expect_ty())) . .collect::, _>>()?, 22 ( 0.00%) &ReprOptions::default(), . kind, . )? . } . . // SIMD vector types. 38 ( 0.00%) ty::Adt(def, substs) if def.repr.simd() => { . if !def.is_struct() { . // Should have yielded E0517 by now. . tcx.sess.delay_span_bug( . DUMMY_SP, . "#[repr(simd)] was applied to an ADT that is not a struct", . ); . return Err(LayoutError::Unknown(ty)); . } -- line 732 ---------------------------------------- -- line 833 ---------------------------------------- . abi: Abi::Vector { element: e_abi, count: e_len }, . largest_niche: e_ly.largest_niche, . size, . align, . }) . } . . // ADTs. 38 ( 0.00%) ty::Adt(def, substs) => { . // Cache the field layouts. 38 ( 0.00%) let variants = def . .variants . .iter() . .map(|v| { . v.fields . .iter() 32 ( 0.00%) .map(|field| self.layout_of(field.ty(tcx, substs))) . .collect::, _>>() . }) . .collect::, _>>()?; . 19 ( 0.00%) if def.is_union() { . if def.repr.pack.is_some() && def.repr.align.is_some() { . self.tcx.sess.delay_span_bug( . tcx.def_span(def.did), . "union cannot be packed and aligned", . ); . return Err(LayoutError::Unknown(ty)); . } . -- line 862 ---------------------------------------- -- line 921 ---------------------------------------- . } . . // A variant is absent if it's uninhabited and only has ZST fields. . // Present uninhabited variants only require space for their fields, . // but *not* an encoding of the discriminant (e.g., a tag value). . // See issue #49298 for more details on the need to leave space . // for non-ZST uninhabited data (mostly partial initialization). . let absent = |fields: &[TyAndLayout<'_>]| { 5 ( 0.00%) let uninhabited = fields.iter().any(|f| f.abi.is_uninhabited()); . let is_zst = fields.iter().all(|f| f.is_zst()); 164 ( 0.00%) uninhabited && is_zst 164 ( 0.00%) }; . let (present_first, present_second) = { . let mut present_variants = variants . .iter_enumerated() 148 ( 0.00%) .filter_map(|(i, v)| if absent(v) { None } else { Some(i) }); . (present_variants.next(), present_variants.next()) . }; 38 ( 0.00%) let present_first = match present_first { . Some(present_first) => present_first, . // Uninhabited because it has no variants, or only absent ones. . None if def.is_enum() => { . return Ok(tcx.layout_of(param_env.and(tcx.types.never))?.layout); . } . // If it's a struct, still compute a layout so that we can still compute the . // field offsets. . None => VariantIdx::new(0), . }; . 19 ( 0.00%) let is_struct = !def.is_enum() || . // Only one variant is present. 18 ( 0.00%) (present_second.is_none() && . // Representation optimizations are allowed. . !def.repr.inhibit_enum_layout_opt()); . if is_struct { . // Struct, or univariant enum equivalent to a struct. . // (Typechecking will reject discriminant-sizing attrs.) . . let v = present_first; 1 ( 0.00%) let kind = if def.is_enum() || variants[v].is_empty() { . StructKind::AlwaysSized . } else { 3 ( 0.00%) let param_env = tcx.param_env(def.did); 1 ( 0.00%) let last_field = def.variants[v].fields.last().unwrap(); . let always_sized = 6 ( 0.00%) tcx.type_of(last_field.did).is_sized(tcx.at(DUMMY_SP), param_env); 2 ( 0.00%) if !always_sized { . StructKind::MaybeUnsized . } else { . StructKind::AlwaysSized . } . }; . 13 ( 0.00%) let mut st = self.univariant_uninterned(ty, &variants[v], &def.repr, kind)?; 5 ( 0.00%) st.variants = Variants::Single { index: v }; 7 ( 0.00%) let (start, end) = self.tcx.layout_scalar_valid_range(def.did); 4 ( 0.00%) match st.abi { . Abi::Scalar(ref mut scalar) | Abi::ScalarPair(ref mut scalar, _) => { . // the asserts ensure that we are not using the . // `#[rustc_layout_scalar_valid_range(n)]` . // attribute to widen the range of anything as that would probably . // result in UB somewhere . // FIXME(eddyb) the asserts are probably not needed, . // as larger validity ranges would result in missed . // optimizations, *not* wrongly assuming the inner -- line 985 ---------------------------------------- -- line 1013 ---------------------------------------- . st.largest_niche = Some(niche); . } . } . None => st.largest_niche = Some(niche), . } . } . } . _ => assert!( 3 ( 0.00%) start == Bound::Unbounded && end == Bound::Unbounded, . "nonscalar layout for layout_scalar_valid_range type {:?}: {:#?}", . def, . st, . ), . } . 9 ( 0.00%) return Ok(tcx.intern_layout(st)); . } . . // At this point, we have handled all unions and . // structs. (We have also handled univariant enums . // that allow representation optimization.) . assert!(def.is_enum()); . . // The current code for niche-filling relies on variant indices . // instead of actual discriminants, so dataful enums with . // explicit discriminants (RFC #2363) would misbehave. . let no_explicit_discriminants = def . .variants . .iter_enumerated() . .all(|(i, v)| v.discr == ty::VariantDiscr::Relative(i.as_u32())); . 36 ( 0.00%) let mut niche_filling_layout = None; . . // Niche-filling enum optimization. 36 ( 0.00%) if !def.repr.inhibit_enum_layout_opt() && no_explicit_discriminants { . let mut dataful_variant = None; . let mut niche_variants = VariantIdx::MAX..=VariantIdx::new(0); . . // Find one non-ZST variant. 1,049 ( 0.00%) 'variants: for (v, fields) in variants.iter_enumerated() { 492 ( 0.00%) if absent(fields) { . continue 'variants; . } 328 ( 0.00%) for f in fields { . if !f.is_zst() { . if dataful_variant.is_none() { . dataful_variant = Some(v); . continue 'variants; . } else { . dataful_variant = None; . break 'variants; . } . } . } 644 ( 0.00%) niche_variants = *niche_variants.start().min(&v)..=v; . } . 51 ( 0.00%) if niche_variants.start() > niche_variants.end() { . dataful_variant = None; . } . . if let Some(i) = dataful_variant { 5 ( 0.00%) let count = (niche_variants.end().as_u32() . - niche_variants.start().as_u32() . + 1) as u128; . . // Find the field with the largest niche 1 ( 0.00%) let niche_candidate = variants[i] . .iter() . .enumerate() 2 ( 0.00%) .filter_map(|(j, field)| Some((j, field.largest_niche?))) . .max_by_key(|(_, niche)| niche.available(dl)); . 2 ( 0.00%) if let Some((field_index, niche, (niche_start, niche_scalar))) = 13 ( 0.00%) niche_candidate.and_then(|(field_index, niche)| { . Some((field_index, niche, niche.reserve(self, count)?)) . }) . { . let mut align = dl.aggregate_align; . let st = variants . .iter_enumerated() . .map(|(j, v)| { . let mut st = self.univariant_uninterned( -- line 1095 ---------------------------------------- -- line 1151 ---------------------------------------- . largest_niche, . size, . align, . }); . } . } . } . 90 ( 0.00%) let (mut min, mut max) = (i128::MAX, i128::MIN); 167 ( 0.00%) let discr_type = def.repr.discr_type(); 54 ( 0.00%) let bits = Integer::from_attr(self, discr_type).size().bits(); 365 ( 0.00%) for (i, discr) in def.discriminants(tcx) { 3 ( 0.00%) if variants[i].iter().any(|f| f.abi.is_uninhabited()) { . continue; . } . let mut x = discr.val as i128; 167 ( 0.00%) if discr_type.is_signed() { . // sign extend the raw representation to be an i128 3,173 ( 0.00%) x = (x << (128 - bits)) >> (128 - bits); . } 668 ( 0.00%) if x < min { 72 ( 0.00%) min = x; . } 668 ( 0.00%) if x > max { 501 ( 0.00%) max = x; . } . } . // We might have no inhabited variants, so pretend there's at least one. 18 ( 0.00%) if (min, max) == (i128::MAX, i128::MIN) { . min = 0; . max = 0; . } 90 ( 0.00%) assert!(min <= max, "discriminant range is {}...{}", min, max); 162 ( 0.00%) let (min_ity, signed) = Integer::repr_discr(tcx, ty, &def.repr, min, max); . 36 ( 0.00%) let mut align = dl.aggregate_align; 18 ( 0.00%) let mut size = Size::ZERO; . . // We're interested in the smallest alignment, so start large. 36 ( 0.00%) let mut start_align = Align::from_bytes(256).unwrap(); 90 ( 0.00%) assert_eq!(Integer::for_align(dl, start_align), None); . . // repr(C) on an enum tells us to make a (tag, union) layout, . // so we need to grow the prefix alignment to be at least . // the alignment of the union. (This value is used both for . // determining the alignment of the overall enum, and the . // determining the alignment of the payload after the tag.) 234 ( 0.00%) let mut prefix_align = min_ity.align(dl).abi; 18 ( 0.00%) if def.repr.c() { . for fields in &variants { . for field in fields { . prefix_align = prefix_align.max(field.align.abi); . } . } . } . . // Create the set of structs that represent each variant. 36 ( 0.00%) let mut layout_variants = variants . .iter_enumerated() . .map(|(i, field_layouts)| { 3,173 ( 0.00%) let mut st = self.univariant_uninterned( 167 ( 0.00%) ty, . &field_layouts, 334 ( 0.00%) &def.repr, 668 ( 0.00%) StructKind::Prefixed(min_ity.size(), prefix_align), . )?; 501 ( 0.00%) st.variants = Variants::Single { index: i }; . // Find the first field we can't move later . // to make room for a larger discriminant. . for field in 2,177 ( 0.00%) st.fields.index_by_increasing_offset().map(|j| field_layouts[j]) . { . if !field.is_zst() || field.align.abi.bytes() != 1 { 6 ( 0.00%) start_align = start_align.min(field.align.abi); . break; . } . } 668 ( 0.00%) size = cmp::max(size, st.size); 501 ( 0.00%) align = align.max(st.align); 1,002 ( 0.00%) Ok(st) . }) . .collect::, _>>()?; . . // Align the maximum variant size to the largest alignment. 90 ( 0.00%) size = size.align_to(align.abi); . 72 ( 0.00%) if size.bytes() >= dl.obj_size_bound() { . return Err(LayoutError::SizeOverflow(ty)); . } . 72 ( 0.00%) let typeck_ity = Integer::from_attr(dl, def.repr.discr_type()); 54 ( 0.00%) if typeck_ity < min_ity { . // It is a bug if Layout decided on a greater discriminant size than typeck for . // some reason at this point (based on values discriminant can take on). Mostly . // because this discriminant will be loaded, and then stored into variable of . // type calculated by typeck. Consider such case (a bug): typeck decided on . // byte-sized discriminant, but layout thinks we need a 16-bit to store all . // discriminant values. That would be a bug, because then, in codegen, in order . // to store this 16-bit discriminant into 8-bit sized temporary some of the . // space necessary to represent would have to be discarded (or layout is wrong -- line 1250 ---------------------------------------- -- line 1263 ---------------------------------------- . // as the alignment of the first field of each variant. . // We increase the size of the discriminant to avoid LLVM copying . // padding when it doesn't need to. This normally causes unaligned . // load/stores and excessive memcpy/memset operations. By using a . // bigger integer size, LLVM can be sure about its contents and . // won't be so conservative. . . // Use the initial field alignment 54 ( 0.00%) let mut ity = if def.repr.c() || def.repr.int.is_some() { . min_ity . } else { 54 ( 0.00%) Integer::for_align(dl, start_align).unwrap_or(min_ity) . }; . . // If the alignment is not larger than the chosen discriminant size, . // don't use the alignment as the final size. 18 ( 0.00%) if ity <= min_ity { . ity = min_ity; . } else { . // Patch up the variants' first few fields. 2 ( 0.00%) let old_ity_size = min_ity.size(); . let new_ity_size = ity.size(); . for variant in &mut layout_variants { 8 ( 0.00%) match variant.fields { . FieldsShape::Arbitrary { ref mut offsets, .. } => { . for i in offsets { 3 ( 0.00%) if *i <= old_ity_size { . assert_eq!(*i, old_ity_size); . *i = new_ity_size; . } . } . // We might be making the struct larger. 4 ( 0.00%) if variant.size <= old_ity_size { 6 ( 0.00%) variant.size = new_ity_size; . } . } . _ => bug!(), . } . } . } . 18 ( 0.00%) let tag_mask = ity.size().unsigned_int_max(); . let tag = Scalar { . value: Int(ity, signed), . valid_range: WrappingRange { 90 ( 0.00%) start: (min as u128 & tag_mask), 72 ( 0.00%) end: (max as u128 & tag_mask), . }, . }; . let mut abi = Abi::Aggregate { sized: true }; 108 ( 0.00%) if tag.value.size(dl) == size { . abi = Abi::Scalar(tag); . } else { . // Try to use a ScalarPair for all tagged enums. . let mut common_prim = None; . for (field_layouts, layout_variant) in iter::zip(&variants, &layout_variants) { 30 ( 0.00%) let offsets = match layout_variant.fields { . FieldsShape::Arbitrary { ref offsets, .. } => offsets, . _ => bug!(), . }; . let mut fields = . iter::zip(field_layouts, offsets).filter(|p| !p.0.is_zst()); 150 ( 0.00%) let (field, offset) = match (fields.next(), fields.next()) { . (None, None) => continue, . (Some(pair), None) => pair, . _ => { . common_prim = None; . break; . } . }; 9 ( 0.00%) let prim = match field.abi { 6 ( 0.00%) Abi::Scalar(scalar) => scalar.value, . _ => { . common_prim = None; . break; . } . }; 6 ( 0.00%) if let Some(pair) = common_prim { . // This is pretty conservative. We could go fancier . // by conflating things like i32 and u32, or even . // realising that (u8, u8) could just cohabit with . // u16 or even u32. 9 ( 0.00%) if pair != (prim, offset) { . common_prim = None; . break; . } . } else { . common_prim = Some((prim, offset)); . } . } 4 ( 0.00%) if let Some((prim, offset)) = common_prim { 34 ( 0.00%) let pair = self.scalar_pair(tag, scalar_unit(prim)); 4 ( 0.00%) let pair_offsets = match pair.fields { 4 ( 0.00%) FieldsShape::Arbitrary { ref offsets, ref memory_index } => { 2 ( 0.00%) assert_eq!(memory_index, &[0, 1]); . offsets . } . _ => bug!(), . }; 12 ( 0.00%) if pair_offsets[0] == Size::ZERO 4 ( 0.00%) && pair_offsets[1] == *offset 2 ( 0.00%) && align == pair.align 2 ( 0.00%) && size == pair.size . { . // We can use `ScalarPair` only when it matches our . // already computed layout (including `#[repr(C)]`). 54 ( 0.00%) abi = pair.abi; . } 2 ( 0.00%) } . } . . if layout_variants.iter().all(|v| v.abi.is_uninhabited()) { . abi = Abi::Uninhabited; . } . 288 ( 0.00%) let largest_niche = Niche::from_scalar(dl, Size::ZERO, tag); . . let tagged_layout = Layout { . variants: Variants::Multiple { . tag, . tag_encoding: TagEncoding::Direct, . tag_field: 0, . variants: layout_variants, . }, . fields: FieldsShape::Arbitrary { 90 ( 0.00%) offsets: vec![Size::ZERO], 72 ( 0.00%) memory_index: vec![0], . }, . largest_niche, . abi, 36 ( 0.00%) align, 18 ( 0.00%) size, . }; . 54 ( 0.00%) let best_layout = match (tagged_layout, niche_filling_layout) { . (tagged_layout, Some(niche_filling_layout)) => { . // Pick the smaller layout; otherwise, . // pick the layout with the larger niche; otherwise, . // pick tagged as it has simpler codegen. . cmp::min_by_key(tagged_layout, niche_filling_layout, |layout| { . let niche_size = layout.largest_niche.map_or(0, |n| n.available(dl)); . (layout.size, cmp::Reverse(niche_size)) . }) . } 1,098 ( 0.00%) (tagged_layout, None) => tagged_layout, . }; . 162 ( 0.00%) tcx.intern_layout(best_layout) 38 ( 0.00%) } . . // Types with no meaningful known layout. . ty::Projection(_) | ty::Opaque(..) => { . // NOTE(eddyb) `layout_of` query should've normalized these away, . // if that was possible, so there's no reason to try again here. . return Err(LayoutError::Unknown(ty)); . } . -- line 1419 ---------------------------------------- -- line 1420 ---------------------------------------- . ty::Placeholder(..) | ty::GeneratorWitness(..) | ty::Infer(_) => { . bug!("Layout::compute: unexpected type `{}`", ty) . } . . ty::Bound(..) | ty::Param(_) | ty::Error(_) => { . return Err(LayoutError::Unknown(ty)); . } . }) 528 ( 0.00%) } . } . . /// Overlap eligibility and variant assignment for each GeneratorSavedLocal. . #[derive(Clone, Debug, PartialEq)] . enum SavedLocalEligibility { . Unassigned, . Assigned(VariantIdx), . // FIXME: Use newtype_index so we aren't wasting bytes -- line 1436 ---------------------------------------- -- line 1755 ---------------------------------------- . } . . /// This is invoked by the `layout_of` query to record the final . /// layout of each type. . #[inline(always)] . fn record_layout_for_printing(&self, layout: TyAndLayout<'tcx>) { . // If we are running with `-Zprint-type-sizes`, maybe record layouts . // for dumping later. 330 ( 0.00%) if self.tcx.sess.opts.debugging_opts.print_type_sizes { . self.record_layout_for_printing_outlined(layout) . } . } . . fn record_layout_for_printing_outlined(&self, layout: TyAndLayout<'tcx>) { . // Ignore layouts that are done with non-empty environments or . // non-monomorphic layouts, as the user only wants to see the stuff . // resulting from the final codegen session. -- line 1771 ---------------------------------------- -- line 2041 ---------------------------------------- . . pub trait HasParamEnv<'tcx> { . fn param_env(&self) -> ty::ParamEnv<'tcx>; . } . . impl<'tcx> HasDataLayout for TyCtxt<'tcx> { . #[inline] . fn data_layout(&self) -> &TargetDataLayout { 405,946 ( 0.02%) &self.data_layout . } . } . . impl<'tcx> HasTargetSpec for TyCtxt<'tcx> { . fn target_spec(&self) -> &Target { . &self.sess.target . } . } -- line 2057 ---------------------------------------- -- line 2080 ---------------------------------------- . #[inline] . fn tcx(&self) -> TyCtxt<'tcx> { . **self . } . } . . impl<'tcx, C> HasParamEnv<'tcx> for LayoutCx<'tcx, C> { . fn param_env(&self) -> ty::ParamEnv<'tcx> { 35 ( 0.00%) self.param_env . } . } . . impl<'tcx, T: HasDataLayout> HasDataLayout for LayoutCx<'tcx, T> { . fn data_layout(&self) -> &TargetDataLayout { . self.tcx.data_layout() . } . } -- line 2096 ---------------------------------------- -- line 2098 ---------------------------------------- . impl<'tcx, T: HasTargetSpec> HasTargetSpec for LayoutCx<'tcx, T> { . fn target_spec(&self) -> &Target { . self.tcx.target_spec() . } . } . . impl<'tcx, T: HasTyCtxt<'tcx>> HasTyCtxt<'tcx> for LayoutCx<'tcx, T> { . fn tcx(&self) -> TyCtxt<'tcx> { 35 ( 0.00%) self.tcx.tcx() . } . } . . pub trait MaybeResult { . type Error; . . fn from(x: Result) -> Self; . fn to_result(self) -> Result; -- line 2114 ---------------------------------------- -- line 2124 ---------------------------------------- . Ok(self) . } . } . . impl MaybeResult for Result { . type Error = E; . . fn from(x: Result) -> Self { 119,416 ( 0.01%) x . } . fn to_result(self) -> Result { . self . } . } . . pub type TyAndLayout<'tcx> = rustc_target::abi::TyAndLayout<'tcx, Ty<'tcx>>; . -- line 2140 ---------------------------------------- -- line 2167 ---------------------------------------- . ) -> >>::Error; . } . . /// Blanket extension trait for contexts that can compute layouts of types. . pub trait LayoutOf<'tcx>: LayoutOfHelpers<'tcx> { . /// Computes the layout of a type. Note that this implicitly . /// executes in "reveal all" mode, and will normalize the input type. . #[inline] 317,219 ( 0.02%) fn layout_of(&self, ty: Ty<'tcx>) -> Self::LayoutOfResult { . self.spanned_layout_of(ty, DUMMY_SP) 317,184 ( 0.02%) } . . /// Computes the layout of a type, at `span`. Note that this implicitly . /// executes in "reveal all" mode, and will normalize the input type. . // FIXME(eddyb) avoid passing information like this, and instead add more . // `TyCtxt::at`-like APIs to be able to do e.g. `cx.at(span).layout_of(ty)`. . #[inline] . fn spanned_layout_of(&self, ty: Ty<'tcx>, span: Span) -> Self::LayoutOfResult { . let span = if !span.is_dummy() { span } else { self.layout_tcx_at_span() }; -- line 2185 ---------------------------------------- -- line 2216 ---------------------------------------- . err . } . } . . impl<'tcx, C> TyAbiInterface<'tcx, C> for Ty<'tcx> . where . C: HasTyCtxt<'tcx> + HasParamEnv<'tcx>, . { 193,440 ( 0.01%) fn ty_and_layout_for_variant( . this: TyAndLayout<'tcx>, . cx: &C, . variant_index: VariantIdx, . ) -> TyAndLayout<'tcx> { 38,688 ( 0.00%) let layout = match this.variants { . Variants::Single { index } . // If all variants but one are uninhabited, the variant layout is the enum layout. . if index == variant_index && . // Don't confuse variants of uninhabited enums with the enum itself. . // For more details see https://github.com/rust-lang/rust/issues/69763. . this.fields != FieldsShape::Primitive => . { . this.layout -- line 2237 ---------------------------------------- -- line 2263 ---------------------------------------- . align: tcx.data_layout.i8_align, . size: Size::ZERO, . }) . } . . Variants::Multiple { ref variants, .. } => &variants[variant_index], . }; . 154,752 ( 0.01%) assert_eq!(layout.variants, Variants::Single { index: variant_index }); . . TyAndLayout { ty: this.ty, layout } 193,440 ( 0.01%) } . 1,562,610 ( 0.09%) fn ty_and_layout_field(this: TyAndLayout<'tcx>, cx: &C, i: usize) -> TyAndLayout<'tcx> { . enum TyMaybeWithLayout<'tcx> { . Ty(Ty<'tcx>), . TyAndLayout(TyAndLayout<'tcx>), . } . 1,250,088 ( 0.07%) fn field_ty_or_layout<'tcx>( . this: TyAndLayout<'tcx>, . cx: &(impl HasTyCtxt<'tcx> + HasParamEnv<'tcx>), . i: usize, . ) -> TyMaybeWithLayout<'tcx> { . let tcx = cx.tcx(); . let tag_layout = |tag: Scalar| -> TyAndLayout<'tcx> { 541,616 ( 0.03%) let layout = Layout::scalar(cx, tag); 440,063 ( 0.03%) TyAndLayout { layout: tcx.intern_layout(layout), ty: tag.value.to_ty(tcx) } . }; . 312,522 ( 0.02%) match *this.ty.kind() { . ty::Bool . | ty::Char . | ty::Int(_) . | ty::Uint(_) . | ty::Float(_) . | ty::FnPtr(_) . | ty::Never . | ty::FnDef(..) -- line 2301 ---------------------------------------- -- line 2377 ---------------------------------------- . Variants::Multiple { tag, tag_field, .. } => { . if i == tag_field { . return TyMaybeWithLayout::TyAndLayout(tag_layout(tag)); . } . TyMaybeWithLayout::Ty(substs.as_generator().prefix_tys().nth(i).unwrap()) . } . }, . 258,516 ( 0.02%) ty::Tuple(tys) => TyMaybeWithLayout::Ty(tys[i].expect_ty()), . . // ADTs. 3 ( 0.00%) ty::Adt(def, substs) => { 67,708 ( 0.00%) match this.variants { 3 ( 0.00%) Variants::Single { index } => { 12 ( 0.00%) TyMaybeWithLayout::Ty(def.variants[index].fields[i].ty(tcx, substs)) . } . . // Discriminant field for enums (where applicable). . Variants::Multiple { tag, .. } => { 67,702 ( 0.00%) assert_eq!(i, 0); . return TyMaybeWithLayout::TyAndLayout(tag_layout(tag)); . } . } . } . . ty::Projection(_) . | ty::Bound(..) . | ty::Placeholder(..) . | ty::Opaque(..) . | ty::Param(_) . | ty::Infer(_) . | ty::Error(_) => bug!("TyAndLayout::field: unexpected type `{}`", this.ty), . } 937,566 ( 0.05%) } . 416,696 ( 0.02%) match field_ty_or_layout(this, cx, i) { 140,646 ( 0.01%) TyMaybeWithLayout::Ty(field_ty) => { . cx.tcx().layout_of(cx.param_env().and(field_ty)).unwrap_or_else(|e| { . bug!( . "failed to get layout for `{}`: {},\n\ . despite it being a field (#{}) of an existing layout: {:#?}", . field_ty, . e, . i, . this . ) . }) . } 101,553 ( 0.01%) TyMaybeWithLayout::TyAndLayout(field_layout) => field_layout, . } 833,392 ( 0.05%) } . . fn ty_and_layout_pointee_info_at( . this: TyAndLayout<'tcx>, . cx: &C, . offset: Size, . ) -> Option { . let tcx = cx.tcx(); . let param_env = cx.param_env(); -- line 2435 ---------------------------------------- 400,376 ( 0.02%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/md-5-0.9.1/src/utils.rs -------------------------------------------------------------------------------- Ir . #![allow(clippy::many_single_char_names)] . use crate::consts::RC; . use core::convert::TryInto; . . #[inline(always)] . fn op_f(w: u32, x: u32, y: u32, z: u32, m: u32, c: u32, s: u32) -> u32 { 609,044 ( 0.04%) ((x & y) | (!x & z)) . .wrapping_add(w) . .wrapping_add(m) . .wrapping_add(c) . .rotate_left(s) . .wrapping_add(x) . } . #[inline(always)] . fn op_g(w: u32, x: u32, y: u32, z: u32, m: u32, c: u32, s: u32) -> u32 { 580,584 ( 0.03%) ((x & z) | (y & !z)) . .wrapping_add(w) . .wrapping_add(m) . .wrapping_add(c) . .rotate_left(s) . .wrapping_add(x) . } . . #[inline(always)] . fn op_h(w: u32, x: u32, y: u32, z: u32, m: u32, c: u32, s: u32) -> u32 { 284,600 ( 0.02%) (x ^ y ^ z) . .wrapping_add(w) . .wrapping_add(m) . .wrapping_add(c) . .rotate_left(s) . .wrapping_add(x) . } . . #[inline(always)] . fn op_i(w: u32, x: u32, y: u32, z: u32, m: u32, c: u32, s: u32) -> u32 { 364,288 ( 0.02%) (y ^ (x | !z)) . .wrapping_add(w) . .wrapping_add(m) . .wrapping_add(c) . .rotate_left(s) . .wrapping_add(x) . } . . #[inline] 51,228 ( 0.00%) pub fn compress(state: &mut [u32; 4], input: &[u8; 64]) { 11,384 ( 0.00%) let mut a = state[0]; 5,692 ( 0.00%) let mut b = state[1]; 5,692 ( 0.00%) let mut c = state[2]; 5,692 ( 0.00%) let mut d = state[3]; . . let mut data = [0u32; 16]; . for (o, chunk) in data.iter_mut().zip(input.chunks_exact(4)) { 142,300 ( 0.01%) *o = u32::from_le_bytes(chunk.try_into().unwrap()); . } . . // round 1 . a = op_f(a, b, c, d, data[0], RC[0], 7); . d = op_f(d, a, b, c, data[1], RC[1], 12); . c = op_f(c, d, a, b, data[2], RC[2], 17); . b = op_f(b, c, d, a, data[3], RC[3], 22); . -- line 61 ---------------------------------------- -- line 132 ---------------------------------------- . c = op_i(c, d, a, b, data[6], RC[58], 15); . b = op_i(b, c, d, a, data[13], RC[59], 21); . . a = op_i(a, b, c, d, data[4], RC[60], 6); . d = op_i(d, a, b, c, data[11], RC[61], 10); . c = op_i(c, d, a, b, data[2], RC[62], 15); . b = op_i(b, c, d, a, data[9], RC[63], 21); . 11,384 ( 0.00%) state[0] = state[0].wrapping_add(a); 5,692 ( 0.00%) state[1] = state[1].wrapping_add(b); 5,692 ( 0.00%) state[2] = state[2].wrapping_add(c); 5,692 ( 0.00%) state[3] = state[3].wrapping_add(d); 45,536 ( 0.00%) } -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_typeck/src/check/coercion.rs -------------------------------------------------------------------------------- Ir -- line 73 ---------------------------------------- . /// See #47489 and #48598 . /// See docs on the "AllowTwoPhase" type for a more detailed discussion . allow_two_phase: AllowTwoPhase, . } . . impl<'a, 'tcx> Deref for Coerce<'a, 'tcx> { . type Target = FnCtxt<'a, 'tcx>; . fn deref(&self) -> &Self::Target { 201,530 ( 0.01%) &self.fcx . } . } . . type CoerceResult<'tcx> = InferResult<'tcx, (Vec>, Ty<'tcx>)>; . . /// Coercing a mutable reference to an immutable works, while . /// coercing `&T` to `&mut T` should be forbidden. . fn coerce_mutbls<'tcx>( . from_mutbl: hir::Mutability, . to_mutbl: hir::Mutability, . ) -> RelateResult<'tcx, ()> { 1,992 ( 0.00%) match (from_mutbl, to_mutbl) { . (hir::Mutability::Mut, hir::Mutability::Mut | hir::Mutability::Not) . | (hir::Mutability::Not, hir::Mutability::Not) => Ok(()), . (hir::Mutability::Not, hir::Mutability::Mut) => Err(TypeError::Mutability), . } . } . . /// Do not require any adjustments, i.e. coerce `x -> x`. . fn identity(_: Ty<'_>) -> Vec> { . vec![] . } . . fn simple<'tcx>(kind: Adjust<'tcx>) -> impl FnOnce(Ty<'tcx>) -> Vec> { 272 ( 0.00%) move |target| vec![Adjustment { kind, target }] . } . . /// This always returns `Ok(...)`. . fn success<'tcx>( . adj: Vec>, . target: Ty<'tcx>, . obligations: traits::PredicateObligations<'tcx>, . ) -> CoerceResult<'tcx> { 55,517 ( 0.00%) Ok(InferOk { value: (adj, target), obligations }) . } . . impl<'f, 'tcx> Coerce<'f, 'tcx> { . fn new( . fcx: &'f FnCtxt<'f, 'tcx>, . cause: ObligationCause<'tcx>, . allow_two_phase: AllowTwoPhase, . ) -> Self { 147,572 ( 0.01%) Coerce { fcx, cause, allow_two_phase, use_lub: false } . } . 398,387 ( 0.02%) fn unify(&self, a: Ty<'tcx>, b: Ty<'tcx>) -> InferResult<'tcx, Ty<'tcx>> { . debug!("unify(a: {:?}, b: {:?}, use_lub: {})", a, b, self.use_lub); . self.commit_if_ok(|_| { 72,434 ( 0.00%) if self.use_lub { 82 ( 0.00%) self.at(&self.cause, self.fcx.param_env).lub(b, a) . } else { 72,352 ( 0.00%) self.at(&self.cause, self.fcx.param_env) . .sup(b, a) . .map(|InferOk { value: (), obligations }| InferOk { value: a, obligations }) . } . }) 289,736 ( 0.02%) } . . /// Unify two types (using sub or lub) and produce a specific coercion. 72,032 ( 0.00%) fn unify_and(&self, a: Ty<'tcx>, b: Ty<'tcx>, f: F) -> CoerceResult<'tcx> . where . F: FnOnce(Ty<'tcx>) -> Vec>, . { 89,561 ( 0.01%) self.unify(&a, &b) 71,469 ( 0.00%) .and_then(|InferOk { value: ty, obligations }| success(f(ty), ty, obligations)) 54,024 ( 0.00%) } . 387,912 ( 0.02%) #[instrument(skip(self))] . fn coerce(&self, a: Ty<'tcx>, b: Ty<'tcx>) -> CoerceResult<'tcx> { . // First, remove any resolved type variables (at the top level, at least): 18,472 ( 0.00%) let a = self.shallow_resolve(a); 18,472 ( 0.00%) let b = self.shallow_resolve(b); . debug!("Coerce.tys({:?} => {:?})", a, b); . . // Just ignore error types. 36,944 ( 0.00%) if a.references_error() || b.references_error() { . return success(vec![], self.fcx.tcx.ty_error(), vec![]); . } . . // Coercing from `!` to any type is allowed: 18,472 ( 0.00%) if a.is_never() { . return success(simple(Adjust::NeverToAny)(b), b, vec![]); . } . . // Coercing *from* an unresolved inference variable means that . // we have no information about the source type. This will always . // ultimately fall back to some form of subtyping. 18,537 ( 0.00%) if a.is_ty_var() { . return self.coerce_from_inference_variable(a, b, identity); . } . . // Consider coercing the subtype to a DST . // . // NOTE: this is wrapped in a `commit_if_ok` because it creates . // a "spurious" type variable, and we don't want to have that . // type variable in memory if the coercion fails. . let unsize = self.commit_if_ok(|_| self.coerce_unsized(a, b)); 73,468 ( 0.00%) match unsize { . Ok(_) => { . debug!("coerce: unsize successful"); 390 ( 0.00%) return unsize; . } . Err(TypeError::ObjectUnsafeCoercion(did)) => { . debug!("coerce: unsize not object safe"); . return Err(TypeError::ObjectUnsafeCoercion(did)); . } . Err(error) => { . debug!(?error, "coerce: unsize failed"); . } . } . . // Examine the supertype and consider auto-borrowing. 91,132 ( 0.01%) match *b.kind() { . ty::RawPtr(mt_b) => { . return self.coerce_unsafe_ptr(a, b, mt_b.mutbl); . } 638 ( 0.00%) ty::Ref(r_b, _, mutbl_b) => { 1,914 ( 0.00%) return self.coerce_borrowed_pointer(a, b, r_b, mutbl_b); . } . _ => {} . } . 126,227 ( 0.01%) match *a.kind() { . ty::FnDef(..) => { . // Function items are coercible to any closure . // type; function pointers are not (that would . // require double indirection). . // Additionally, we permit coercion of function . // items to drop the unsafe qualifier. 24 ( 0.00%) self.coerce_from_fn_item(a, b) . } . ty::FnPtr(a_f) => { . // We permit coercion of fn pointers to drop the . // unsafe qualifier. 11 ( 0.00%) self.coerce_from_fn_pointer(a, a_f, b) . } 66 ( 0.00%) ty::Closure(closure_def_id_a, substs_a) => { . // Non-capturing closures are coercible to . // function pointers or unsafe function pointers. . // It cannot convert closures that require unsafe. 176 ( 0.00%) self.coerce_closure_to_fn(a, closure_def_id_a, substs_a, b) . } . _ => { . // Otherwise, just use unification rules. 90,040 ( 0.01%) self.unify_and(a, b, identity) . } . } 36,944 ( 0.00%) } . . /// Coercing *from* an inference variable. In this case, we have no information . /// about the source type, so we can't really do a true coercion and we always . /// fall back to subtyping (`unify_and`). . fn coerce_from_inference_variable( . &self, . a: Ty<'tcx>, . b: Ty<'tcx>, . make_adjustments: impl FnOnce(Ty<'tcx>) -> Vec>, . ) -> CoerceResult<'tcx> { . debug!("coerce_from_inference_variable(a={:?}, b={:?})", a, b); 5 ( 0.00%) assert!(a.is_ty_var() && self.infcx.shallow_resolve(a) == a); 5 ( 0.00%) assert!(self.infcx.shallow_resolve(b) == b); . 9 ( 0.00%) if b.is_ty_var() { . // Two unresolved type variables: create a `Coerce` predicate. 6 ( 0.00%) let target_ty = if self.use_lub { . self.infcx.next_ty_var(TypeVariableOrigin { . kind: TypeVariableOriginKind::LatticeVariable, . span: self.cause.span, . }) . } else { . b . }; . . let mut obligations = Vec::with_capacity(2); . for &source_ty in &[a, b] { 4 ( 0.00%) if source_ty != target_ty { . obligations.push(Obligation::new( . self.cause.clone(), 2 ( 0.00%) self.param_env, 8 ( 0.00%) ty::Binder::dummy(ty::PredicateKind::Coerce(ty::CoercePredicate { . a: source_ty, . b: target_ty, . })) . .to_predicate(self.tcx()), . )); . } . } . . debug!( . "coerce_from_inference_variable: two inference variables, target_ty={:?}, obligations={:?}", . target_ty, obligations . ); . let adjustments = make_adjustments(target_ty); 12 ( 0.00%) InferResult::Ok(InferOk { value: (adjustments, target_ty), obligations }) . } else { . // One unresolved type variable: just apply subtyping, we may be able . // to do something useful. . self.unify_and(a, b, make_adjustments) . } . } . . /// Reborrows `&mut A` to `&mut B` and `&(mut) A` to `&B`. . /// To match `A` with `B`, autoderef will be performed, . /// calling `deref`/`deref_mut` where necessary. 3,190 ( 0.00%) fn coerce_borrowed_pointer( . &self, . a: Ty<'tcx>, . b: Ty<'tcx>, . r_b: ty::Region<'tcx>, . mutbl_b: hir::Mutability, . ) -> CoerceResult<'tcx> { . debug!("coerce_borrowed_pointer(a={:?}, b={:?})", a, b); . . // If we have a parameter of type `&M T_a` and the value . // provided is `expr`, we will be adding an implicit borrow, . // meaning that we convert `f(expr)` to `f(&M *expr)`. Therefore, . // to type check, we will construct the type that `&M*expr` would . // yield. . 638 ( 0.00%) let (r_a, mt_a) = match *a.kind() { 957 ( 0.00%) ty::Ref(r_a, ty, mutbl) => { . let mt_a = ty::TypeAndMut { ty, mutbl }; . coerce_mutbls(mt_a.mutbl, mutbl_b)?; . (r_a, mt_a) . } . _ => return self.unify_and(a, b, identity), . }; . 638 ( 0.00%) let span = self.cause.span; . . let mut first_error = None; . let mut r_borrow_var = None; . let mut autoderef = self.autoderef(span, a); . let mut found = None; . 1,276 ( 0.00%) for (referent_ty, autoderefs) in autoderef.by_ref() { 1,276 ( 0.00%) if autoderefs == 0 { . // Don't let this pass, otherwise it would cause . // &T to autoref to &&T. . continue; . } . . // At this point, we have deref'd `a` to `referent_ty`. So . // imagine we are coercing from `&'a mut Vec` to `&'b mut [T]`. . // In the autoderef loop for `&'a mut Vec`, we would get -- line 326 ---------------------------------------- -- line 386 ---------------------------------------- . // this extra edge causes the region `'a` to be inferred to something . // too big, which then results in borrowck errors.) . // - We could track the innermost shared reference, but there is already . // code in regionck that has the job of creating links between . // the region of a borrow and the regions in the thing being . // borrowed (here, `'a` and `'x`), and it knows how to handle . // all the various cases. So instead we just make a region variable . // and let regionck figure it out. 638 ( 0.00%) let r = if !self.use_lub { . r_b // [2] above . } else if autoderefs == 1 { . r_a // [3] above . } else { . if r_borrow_var.is_none() { . // create var lazily, at most once . let coercion = Coercion(span); . let r = self.next_region_var(coercion); . r_borrow_var = Some(r); // [4] above . } . r_borrow_var.unwrap() . }; 319 ( 0.00%) let derefd_ty_a = self.tcx.mk_ref( . r, . TypeAndMut { . ty: referent_ty, . mutbl: mutbl_b, // [1] above . }, . ); 2,233 ( 0.00%) match self.unify(derefd_ty_a, b) { . Ok(ok) => { 1,276 ( 0.00%) found = Some(ok); . break; . } . Err(err) => { . if first_error.is_none() { . first_error = Some(err); . } . } . } . } . . // Extract type or return an error. We return the first error . // we got, which should be from relating the "base" type . // (e.g., in example above, the failure from relating `Vec` . // to the target type), since that should be the least . // confusing. 2,552 ( 0.00%) let InferOk { value: ty, mut obligations } = match found { . Some(d) => d, . None => { . let err = first_error.expect("coerce_borrowed_pointer had no error"); . debug!("coerce_borrowed_pointer: failed with err = {:?}", err); . return Err(err); . } . }; . 389 ( 0.00%) if ty == a && mt_a.mutbl == hir::Mutability::Not && autoderef.step_count() == 1 { . // As a special case, if we would produce `&'a *x`, that's . // a total no-op. We end up with the type `&'a T` just as . // we started with. In that case, just skip it . // altogether. This is just an optimization. . // . // Note that for `&mut`, we DO want to reborrow -- . // otherwise, this would be a move, which might be an . // error. For example `foo(self.x)` where `self` and . // `self.x` both have `&mut `type would be a move of . // `self.x`, but we auto-coerce it to `foo(&mut *self.x)`, . // which is a borrow. 28 ( 0.00%) assert_eq!(mutbl_b, hir::Mutability::Not); // can only coerce &T -> &U 56 ( 0.00%) return success(vec![], ty, obligations); . } . 2,135 ( 0.00%) let InferOk { value: mut adjustments, obligations: o } = 305 ( 0.00%) self.adjust_steps_as_infer_ok(&autoderef); . obligations.extend(o); 5,795 ( 0.00%) obligations.extend(autoderef.into_obligations()); . . // Now apply the autoref. We have to extract the region out of . // the final ref type we got. 610 ( 0.00%) let r_borrow = match ty.kind() { . ty::Ref(r_borrow, _, _) => r_borrow, . _ => span_bug!(span, "expected a ref type, got {:?}", ty), . }; 1,220 ( 0.00%) let mutbl = match mutbl_b { . hir::Mutability::Not => AutoBorrowMutability::Not, . hir::Mutability::Mut => { . AutoBorrowMutability::Mut { allow_two_phase_borrow: self.allow_two_phase } . } . }; . adjustments.push(Adjustment { 305 ( 0.00%) kind: Adjust::Borrow(AutoBorrow::Ref(r_borrow, mutbl)), . target: ty, . }); . . debug!("coerce_borrowed_pointer: succeeded ty={:?} adjustments={:?}", ty, adjustments); . 2,440 ( 0.00%) success(adjustments, ty, obligations) 2,552 ( 0.00%) } . . // &[T; n] or &mut [T; n] -> &[T] . // or &mut [T; n] -> &mut [T] . // or &Concrete -> &Trait, etc. . #[instrument(skip(self), level = "debug")] . fn coerce_unsized(&self, mut source: Ty<'tcx>, mut target: Ty<'tcx>) -> CoerceResult<'tcx> { . source = self.shallow_resolve(source); . target = self.shallow_resolve(target); -- line 490 ---------------------------------------- -- line 506 ---------------------------------------- . // would need to be generic over the self-type (`impl CoerceUnsized for T`) . // or generic over the `CoerceUnsized` type parameter (`impl CoerceUnsized for . // SomeType`). . // . // However, these are exactly the kinds of impls which are forbidden by . // the compiler! Therefore, we can be sure that coercion will always fail . // when either the source or target type is a type variable. This allows us . // to skip performing any trait selection, and immediately bail out. 18,522 ( 0.00%) if source.is_ty_var() { . debug!("coerce_unsized: source is a TyVar, bailing out"); . return Err(TypeError::Mismatch); . } 19,438 ( 0.00%) if target.is_ty_var() { . debug!("coerce_unsized: target is a TyVar, bailing out"); . return Err(TypeError::Mismatch); . } . . let traits = 214,320 ( 0.01%) (self.tcx.lang_items().unsize_trait(), self.tcx.lang_items().coerce_unsized_trait()); 71,440 ( 0.00%) let (Some(unsize_did), Some(coerce_unsized_did)) = traits else { . debug!("missing Unsize or CoerceUnsized traits"); . return Err(TypeError::Mismatch); . }; . . // Note, we want to avoid unnecessary unsizing. We don't want to coerce to . // a DST unless we have to. This currently comes out in the wash since . // we can't unify [T] with U. But to properly support DST, we need to allow . // that, at which point we will need extra checks on the target here. . . // Handle reborrows before selecting `Source: CoerceUnsized`. 36,755 ( 0.00%) let reborrow = match (source.kind(), target.kind()) { 1,035 ( 0.00%) (&ty::Ref(_, ty_a, mutbl_a), &ty::Ref(_, _, mutbl_b)) => { . coerce_mutbls(mutbl_a, mutbl_b)?; . 345 ( 0.00%) let coercion = Coercion(self.cause.span); 1,725 ( 0.00%) let r_borrow = self.next_region_var(coercion); . let mutbl = match mutbl_b { . hir::Mutability::Not => AutoBorrowMutability::Not, . hir::Mutability::Mut => AutoBorrowMutability::Mut { . // We don't allow two-phase borrows here, at least for initial . // implementation. If it happens that this coercion is a function argument, . // the reborrow in coerce_borrowed_ptr will pick it up. . allow_two_phase_borrow: AllowTwoPhase::No, . }, . }; . Some(( . Adjustment { kind: Adjust::Deref(None), target: ty_a }, . Adjustment { . kind: Adjust::Borrow(AutoBorrow::Ref(r_borrow, mutbl)), 345 ( 0.00%) target: self . .tcx . .mk_ref(r_borrow, ty::TypeAndMut { mutbl: mutbl_b, ty: ty_a }), . }, . )) . } . (&ty::Ref(_, ty_a, mt_a), &ty::RawPtr(ty::TypeAndMut { mutbl: mt_b, .. })) => { . coerce_mutbls(mt_a, mt_b)?; . -- line 563 ---------------------------------------- -- line 574 ---------------------------------------- . let coerce_source = reborrow.as_ref().map_or(source, |&(_, ref r)| r.target); . . // Setup either a subtyping or a LUB relationship between . // the `CoerceUnsized` target type and the expected type. . // We only have the latter, so we use an inference variable . // for the former and let type inference do the rest. . let origin = TypeVariableOrigin { . kind: TypeVariableOriginKind::MiscVariable, 17,860 ( 0.00%) span: self.cause.span, . }; 89,300 ( 0.01%) let coerce_target = self.next_ty_var(origin); 71,440 ( 0.00%) let mut coercion = self.unify_and(coerce_target, target, |target| { . let unsize = Adjustment { kind: Adjust::Pointer(PointerCast::Unsize), target }; 35,720 ( 0.00%) match reborrow { 87,575 ( 0.01%) None => vec![unsize], 4,830 ( 0.00%) Some((ref deref, ref autoref)) => vec![deref.clone(), autoref.clone(), unsize], . } . })?; . 17,860 ( 0.00%) let mut selcx = traits::SelectionContext::new(self); . . // Create an obligation for `Source: CoerceUnsized`. . let cause = ObligationCause::new( 35,720 ( 0.00%) self.cause.span, 35,720 ( 0.00%) self.body_id, . ObligationCauseCode::Coercion { source, target }, . ); . . // Use a FIFO queue for this custom fulfillment procedure. . // . // A Vec (or SmallVec) is not a natural choice for a queue. However, . // this code path is hot, and this queue usually has a max length of 1 . // and almost never more than 3. By using a SmallVec we avoid an . // allocation, at the (very small) cost of (occasionally) having to . // shift subsequent elements down when removing the front element. 250,040 ( 0.01%) let mut queue: SmallVec<[_; 4]> = smallvec![traits::predicate_for_trait_def( 35,720 ( 0.00%) self.tcx, 17,860 ( 0.00%) self.fcx.param_env, 89,300 ( 0.01%) cause, . coerce_unsized_did, . 0, . coerce_source, 89,300 ( 0.01%) &[coerce_target.into()] . )]; . . let mut has_unsized_tuple_coercion = false; . let mut has_trait_upcasting_coercion = false; . . // Keep resolving `CoerceUnsized` and `Unsize` predicates to avoid . // emitting a coercion in cases like `Foo<$1>` -> `Foo<$2>`, where . // inference might unify those two inner type variables later. . let traits = [coerce_unsized_did, unsize_did]; 37,034 ( 0.00%) while !queue.is_empty() { . let obligation = queue.remove(0); . debug!("coerce_unsized resolve step: {:?}", obligation); 18,491 ( 0.00%) let bound_predicate = obligation.predicate.kind(); 92,455 ( 0.01%) let trait_pred = match bound_predicate.skip_binder() { 109,434 ( 0.01%) ty::PredicateKind::Trait(trait_pred) if traits.contains(&trait_pred.def_id()) => { 163,863 ( 0.01%) if unsize_did == trait_pred.def_id() { 2,082 ( 0.00%) let self_ty = trait_pred.self_ty(); 1,388 ( 0.00%) let unsize_ty = trait_pred.trait_ref.substs[1].expect_ty(); 1,735 ( 0.00%) if let (ty::Dynamic(ref data_a, ..), ty::Dynamic(ref data_b, ..)) = . (self_ty.kind(), unsize_ty.kind()) . { . if data_a.principal_def_id() != data_b.principal_def_id() { . debug!("coerce_unsized: found trait upcasting coercion"); . has_trait_upcasting_coercion = true; . } . } 2,082 ( 0.00%) if let ty::Tuple(..) = unsize_ty.kind() { . debug!("coerce_unsized: found unsized tuple coercion"); . has_unsized_tuple_coercion = true; . } . } 36,414 ( 0.00%) bound_predicate.rebind(trait_pred) . } . _ => { 1,704 ( 0.00%) coercion.obligations.push(obligation); . continue; . } . }; 200,277 ( 0.01%) match selcx.select(&obligation.with(trait_pred)) { . // Uncertain or unimplemented. . Ok(None) => { 442 ( 0.00%) if trait_pred.def_id() == unsize_did { 204 ( 0.00%) let trait_pred = self.resolve_vars_if_possible(trait_pred); 68 ( 0.00%) let self_ty = trait_pred.skip_binder().self_ty(); 204 ( 0.00%) let unsize_ty = trait_pred.skip_binder().trait_ref.substs[1].expect_ty(); . debug!("coerce_unsized: ambiguous unsize case for {:?}", trait_pred); 68 ( 0.00%) match (&self_ty.kind(), &unsize_ty.kind()) { . (ty::Infer(ty::TyVar(v)), ty::Dynamic(..)) . if self.type_var_is_sized(*v) => . { . debug!("coerce_unsized: have sized infer {:?}", v); . coercion.obligations.push(obligation); . // `$0: Unsize` where we know that `$0: Sized`, try going . // for unsizing. . } -- line 671 ---------------------------------------- -- line 679 ---------------------------------------- . } . } else { . debug!("coerce_unsized: early return - ambiguous"); . return Err(TypeError::Mismatch); . } . } . Err(traits::Unimplemented) => { . debug!("coerce_unsized: early return - can't prove obligation"); 106,800 ( 0.01%) return Err(TypeError::Mismatch); . } . . // Object safety violations or miscellaneous. . Err(err) => { . self.report_selection_error(obligation.clone(), &obligation, &err, false); . // Treat this like an obligation and follow through . // with the unsizing - the lack of a coercion should . // be silent, as it causes a type mismatch later. . } . 7,087 ( 0.00%) Ok(Some(impl_source)) => queue.extend(impl_source.nested_obligations()), . } 35,668 ( 0.00%) } . 52 ( 0.00%) if has_unsized_tuple_coercion && !self.tcx.features().unsized_tuple_coercion { . feature_err( . &self.tcx.sess.parse_sess, . sym::unsized_tuple_coercion, . self.cause.span, . "unsized tuple coercion is not stable enough for use and is subject to change", . ) . .emit(); . } . 52 ( 0.00%) if has_trait_upcasting_coercion && !self.tcx().features().trait_upcasting { . feature_err( . &self.tcx.sess.parse_sess, . sym::trait_upcasting, . self.cause.span, . "trait upcasting coercion is experimental", . ) . .emit(); . } . 286 ( 0.00%) Ok(coercion) . } . . fn coerce_from_safe_fn( . &self, . a: Ty<'tcx>, . fn_ty_a: ty::PolyFnSig<'tcx>, . b: Ty<'tcx>, . to_unsafe: F, . normal: G, . ) -> CoerceResult<'tcx> . where . F: FnOnce(Ty<'tcx>) -> Vec>, . G: FnOnce(Ty<'tcx>) -> Vec>, . { 12 ( 0.00%) if let ty::FnPtr(fn_ty_b) = b.kind() { 20 ( 0.00%) if let (hir::Unsafety::Normal, hir::Unsafety::Unsafe) = 14 ( 0.00%) (fn_ty_a.unsafety(), fn_ty_b.unsafety()) . { . let unsafe_a = self.tcx.safe_to_unsafe_fn_ty(fn_ty_a); . return self.unify_and(unsafe_a, b, to_unsafe); . } . } . self.unify_and(a, b, normal) . } . 11 ( 0.00%) fn coerce_from_fn_pointer( . &self, . a: Ty<'tcx>, . fn_ty_a: ty::PolyFnSig<'tcx>, . b: Ty<'tcx>, . ) -> CoerceResult<'tcx> { . //! Attempts to coerce from the type of a Rust function item . //! into a closure or a `proc`. . //! . . let b = self.shallow_resolve(b); . debug!("coerce_from_fn_pointer(a={:?}, b={:?})", a, b); . . self.coerce_from_safe_fn( . a, 4 ( 0.00%) fn_ty_a, . b, . simple(Adjust::Pointer(PointerCast::UnsafeFnPointer)), . identity, . ) 8 ( 0.00%) } . 40 ( 0.00%) fn coerce_from_fn_item(&self, a: Ty<'tcx>, b: Ty<'tcx>) -> CoerceResult<'tcx> { . //! Attempts to coerce from the type of a Rust function item . //! into a closure or a `proc`. . . let b = self.shallow_resolve(b); 20 ( 0.00%) let InferOk { value: b, mut obligations } = 4 ( 0.00%) self.normalize_associated_types_in_as_infer_ok(self.cause.span, b); . debug!("coerce_from_fn_item(a={:?}, b={:?})", a, b); . 8 ( 0.00%) match b.kind() { . ty::FnPtr(b_sig) => { 16 ( 0.00%) let a_sig = a.fn_sig(self.tcx); . // Intrinsics are not coercible to function pointers 8 ( 0.00%) if a_sig.abi() == Abi::RustIntrinsic || a_sig.abi() == Abi::PlatformIntrinsic { . return Err(TypeError::IntrinsicCast); . } . . // Safe `#[target_feature]` functions are not assignable to safe fn pointers (RFC 2396). 24 ( 0.00%) if let ty::FnDef(def_id, _) = *a.kind() { 16 ( 0.00%) if b_sig.unsafety() == hir::Unsafety::Normal 4 ( 0.00%) && !self.tcx.codegen_fn_attrs(def_id).target_features.is_empty() . { . return Err(TypeError::TargetFeatureCast(def_id)); . } . } . 28 ( 0.00%) let InferOk { value: a_sig, obligations: o1 } = 16 ( 0.00%) self.normalize_associated_types_in_as_infer_ok(self.cause.span, a_sig); . obligations.extend(o1); . 4 ( 0.00%) let a_fn_pointer = self.tcx.mk_fn_ptr(a_sig); 16 ( 0.00%) let InferOk { value, obligations: o2 } = self.coerce_from_safe_fn( . a_fn_pointer, 20 ( 0.00%) a_sig, . b, . |unsafe_ty| { . vec![ . Adjustment { . kind: Adjust::Pointer(PointerCast::ReifyFnPointer), . target: a_fn_pointer, . }, . Adjustment { -- line 811 ---------------------------------------- -- line 813 ---------------------------------------- . target: unsafe_ty, . }, . ] . }, . simple(Adjust::Pointer(PointerCast::ReifyFnPointer)), . )?; . . obligations.extend(o2); 60 ( 0.00%) Ok(InferOk { value, obligations }) . } . _ => self.unify_and(a, b, identity), . } 32 ( 0.00%) } . 308 ( 0.00%) fn coerce_closure_to_fn( . &self, . a: Ty<'tcx>, . closure_def_id_a: DefId, . substs_a: SubstsRef<'tcx>, . b: Ty<'tcx>, . ) -> CoerceResult<'tcx> { . //! Attempts to coerce from the type of a non-capturing closure . //! into a function pointer. . //! . . let b = self.shallow_resolve(b); . 44 ( 0.00%) match b.kind() { . // At this point we haven't done capture analysis, which means . // that the ClosureSubsts just contains an inference variable instead . // of tuple of captured types. . // . // All we care here is if any variable is being captured and not the exact paths, . // so we check `upvars_mentioned` for root variables being captured. 3 ( 0.00%) ty::FnPtr(fn_ty) 3 ( 0.00%) if self . .tcx . .upvars_mentioned(closure_def_id_a.expect_local()) . .map_or(true, |u| u.is_empty()) => . { . // We coerce the closure, which has fn type . // `extern "rust-call" fn((arg0,arg1,...)) -> _` . // to . // `fn(arg0,arg1,...) -> _` . // or . // `unsafe fn(arg0,arg1,...) -> _` 4 ( 0.00%) let closure_sig = substs_a.as_closure().sig(); 4 ( 0.00%) let unsafety = fn_ty.unsafety(); . let pointer_ty = 10 ( 0.00%) self.tcx.mk_fn_ptr(self.tcx.signature_unclosure(closure_sig, unsafety)); . debug!("coerce_closure_to_fn(a={:?}, b={:?}, pty={:?})", a, b, pointer_ty); . self.unify_and( . pointer_ty, . b, . simple(Adjust::Pointer(PointerCast::ClosureFnPointer(unsafety))), . ) . } . _ => self.unify_and(a, b, identity), . } 176 ( 0.00%) } . . fn coerce_unsafe_ptr( . &self, . a: Ty<'tcx>, . b: Ty<'tcx>, . mutbl_b: hir::Mutability, . ) -> CoerceResult<'tcx> { . debug!("coerce_unsafe_ptr(a={:?}, b={:?})", a, b); -- line 880 ---------------------------------------- -- line 906 ---------------------------------------- . } . } . . impl<'a, 'tcx> FnCtxt<'a, 'tcx> { . /// Attempt to coerce an expression to a type, and return the . /// adjusted type of the expression, if successful. . /// Adjustments are only recorded if the coercion succeeded. . /// The expressions *must not* have any pre-existing adjustments. 257,656 ( 0.01%) pub fn try_coerce( . &self, . expr: &hir::Expr<'_>, . expr_ty: Ty<'tcx>, . target: Ty<'tcx>, . allow_two_phase: AllowTwoPhase, . cause: Option>, . ) -> RelateResult<'tcx, Ty<'tcx>> { 55,212 ( 0.00%) let source = self.resolve_vars_with_obligations(expr_ty); . debug!("coercion::try({:?}: {:?} -> {:?})", expr, source, target); . . let cause = 18,404 ( 0.00%) cause.unwrap_or_else(|| self.cause(expr.span, ObligationCauseCode::ExprAssignable)); . let coerce = Coerce::new(self, cause, allow_two_phase); 220,718 ( 0.01%) let ok = self.commit_if_ok(|_| coerce.coerce(source, target))?; . 73,512 ( 0.00%) let (adjustments, _) = self.register_infer_ok_obligations(ok); 183,780 ( 0.01%) self.apply_adjustments(expr, adjustments); 55,134 ( 0.00%) Ok(if expr_ty.references_error() { self.tcx.ty_error() } else { target }) 165,636 ( 0.01%) } . . /// Same as `try_coerce()`, but without side-effects. . /// . /// Returns false if the coercion creates any obligations that result in . /// errors. . pub fn can_coerce(&self, expr_ty: Ty<'tcx>, target: Ty<'tcx>) -> bool { . let source = self.resolve_vars_with_obligations(expr_ty); . debug!("coercion::can_with_predicates({:?} -> {:?})", source, target); -- line 941 ---------------------------------------- -- line 967 ---------------------------------------- . } . . /// Given some expressions, their known unified type and another expression, . /// tries to unify the types, potentially inserting coercions on any of the . /// provided expressions and returns their LUB (aka "common supertype"). . /// . /// This is really an internal helper. From outside the coercion . /// module, you should instantiate a `CoerceMany` instance. 78,117 ( 0.00%) fn try_find_coercion_lub( . &self, . cause: &ObligationCause<'tcx>, . exprs: &[E], . prev_ty: Ty<'tcx>, . new: &hir::Expr<'_>, . new_ty: Ty<'tcx>, . ) -> RelateResult<'tcx, Ty<'tcx>> . where . E: AsCoercionSite, . { 36,054 ( 0.00%) let prev_ty = self.resolve_vars_with_obligations(prev_ty); 18,027 ( 0.00%) let new_ty = self.resolve_vars_with_obligations(new_ty); . debug!( . "coercion::try_find_coercion_lub({:?}, {:?}, exprs={:?} exprs)", . prev_ty, . new_ty, . exprs.len() . ); . . // The following check fixes #88097, where the compiler erroneously . // attempted to coerce a closure type to itself via a function pointer. 6,009 ( 0.00%) if prev_ty == new_ty { 5,868 ( 0.00%) return Ok(prev_ty); . } . . // Special-case that coercion alone cannot handle: . // Function items or non-capturing closures of differing IDs or InternalSubsts. 544 ( 0.00%) let (a_sig, b_sig) = { 544 ( 0.00%) let is_capturing_closure = |ty| { 272 ( 0.00%) if let &ty::Closure(closure_def_id, _substs) = ty { . self.tcx.upvars_mentioned(closure_def_id.expect_local()).is_some() . } else { . false . } 544 ( 0.00%) }; 816 ( 0.00%) if is_capturing_closure(prev_ty.kind()) || is_capturing_closure(new_ty.kind()) { . (None, None) . } else { 408 ( 0.00%) match (prev_ty.kind(), new_ty.kind()) { . (ty::FnDef(..), ty::FnDef(..)) => { . // Don't reify if the function types have a LUB, i.e., they . // are the same function and their parameters have a LUB. . match self . .commit_if_ok(|_| self.at(cause, self.param_env).lub(prev_ty, new_ty)) . { . // We have a LUB of prev_ty and new_ty, just return it. . Ok(ok) => return Ok(self.register_infer_ok_obligations(ok)), -- line 1022 ---------------------------------------- -- line 1048 ---------------------------------------- . substs_b.as_closure().sig(), . hir::Unsafety::Normal, . )), . ), . _ => (None, None), . } . } . }; 272 ( 0.00%) if let (Some(a_sig), Some(b_sig)) = (a_sig, b_sig) { . // Intrinsics are not coercible to function pointers. . if a_sig.abi() == Abi::RustIntrinsic . || a_sig.abi() == Abi::PlatformIntrinsic . || b_sig.abi() == Abi::RustIntrinsic . || b_sig.abi() == Abi::PlatformIntrinsic . { . return Err(TypeError::IntrinsicCast); . } -- line 1064 ---------------------------------------- -- line 1094 ---------------------------------------- . } . . // Configure a Coerce instance to compute the LUB. . // We don't allow two-phase borrows on any autorefs this creates since we . // probably aren't processing function arguments here and even if we were, . // they're going to get autorefed again anyway and we can apply 2-phase borrows . // at that time. . let mut coerce = Coerce::new(self, cause.clone(), AllowTwoPhase::No); 68 ( 0.00%) coerce.use_lub = true; . . // First try to coerce the new expression to the type of the previous ones, . // but only if the new expression has no coercion already applied to it. . let mut first_error = None; 544 ( 0.00%) if !self.typeck_results.borrow().adjustments().contains_key(new.hir_id) { 19,016 ( 0.00%) let result = self.commit_if_ok(|_| coerce.coerce(new_ty, prev_ty)); 136 ( 0.00%) match result { . Ok(ok) => { 544 ( 0.00%) let (adjustments, target) = self.register_infer_ok_obligations(ok); 544 ( 0.00%) self.apply_adjustments(new, adjustments); . debug!( . "coercion::try_find_coercion_lub: was able to coerce from previous type {:?} to new type {:?}", . prev_ty, new_ty, . ); 136 ( 0.00%) return Ok(target); . } . Err(e) => first_error = Some(e), . } . } . . // Then try to coerce the previous expressions to the type of the new one. . // This requires ensuring there are no coercions applied to *any* of the . // previous expressions, other than noop reborrows (ignoring lifetimes). -- line 1125 ---------------------------------------- -- line 1175 ---------------------------------------- . let (adjustments, target) = self.register_infer_ok_obligations(ok); . for expr in exprs { . let expr = expr.as_coercion_site(); . self.apply_adjustments(expr, adjustments.clone()); . } . Ok(target) . } . } 54,081 ( 0.00%) } . } . . /// CoerceMany encapsulates the pattern you should use when you have . /// many expressions that are all getting coerced to a common . /// type. This arises, for example, when you have a match (the result . /// of each arm is coerced to a common type). It also arises in less . /// obvious places, such as when you have many `break foo` expressions . /// that target the same loop, or the various `return` expressions in -- line 1191 ---------------------------------------- -- line 1253 ---------------------------------------- . /// expected to pass each element in the slice to `coerce(...)` in . /// order. This is used with arrays in particular to avoid . /// needlessly cloning the slice. . pub fn with_coercion_sites(expected_ty: Ty<'tcx>, coercion_sites: &'exprs [E]) -> Self { . Self::make(expected_ty, Expressions::UpFront(coercion_sites)) . } . . fn make(expected_ty: Ty<'tcx>, expressions: Expressions<'tcx, 'exprs, E>) -> Self { 1,415 ( 0.00%) CoerceMany { expected_ty, final_ty: None, expressions, pushed: 0 } . } . . /// Returns the "expected type" with which this coercion was . /// constructed. This represents the "downward propagated" type . /// that was given to us at the start of typing whatever construct . /// we are typing (e.g., the match expression). . /// . /// Typically, this is used as the expected type when -- line 1269 ---------------------------------------- -- line 1281 ---------------------------------------- . self.final_ty.unwrap_or(self.expected_ty) . } . . /// Indicates that the value generated by `expression`, which is . /// of type `expression_ty`, is one of the possibilities that we . /// could coerce from. This will record `expression`, and later . /// calls to `coerce` may come back and add adjustments and things . /// if necessary. 68,124 ( 0.00%) pub fn coerce<'a>( . &mut self, . fcx: &FnCtxt<'a, 'tcx>, . cause: &ObligationCause<'tcx>, . expression: &'tcx hir::Expr<'tcx>, . expression_ty: Ty<'tcx>, . ) { 5,958 ( 0.00%) self.coerce_inner(fcx, cause, Some(expression), expression_ty, None, false) 45,416 ( 0.00%) } . . /// Indicates that one of the inputs is a "forced unit". This . /// occurs in a case like `if foo { ... };`, where the missing else . /// generates a "forced unit". Another example is a `loop { break; . /// }`, where the `break` has no argument expression. We treat . /// these cases slightly differently for error-reporting . /// purposes. Note that these tend to correspond to cases where . /// the `()` expression is implicit in the source, and hence we do -- line 1305 ---------------------------------------- -- line 1310 ---------------------------------------- . /// removing a `;`). . pub fn coerce_forced_unit<'a>( . &mut self, . fcx: &FnCtxt<'a, 'tcx>, . cause: &ObligationCause<'tcx>, . augment_error: &mut dyn FnMut(&mut DiagnosticBuilder<'_>), . label_unit_as_expected: bool, . ) { 959 ( 0.00%) self.coerce_inner( . fcx, . cause, . None, 107 ( 0.00%) fcx.tcx.mk_unit(), . Some(augment_error), . label_unit_as_expected, . ) . } . . /// The inner coercion "engine". If `expression` is `None`, this . /// is a forced-unit case, and hence `expression_ty` must be . /// `Nil`. 25,788 ( 0.00%) #[instrument(skip(self, fcx, augment_error, label_expression_as_expected), level = "debug")] . crate fn coerce_inner<'a>( . &mut self, . fcx: &FnCtxt<'a, 'tcx>, . cause: &ObligationCause<'tcx>, . expression: Option<&'tcx hir::Expr<'tcx>>, . mut expression_ty: Ty<'tcx>, . augment_error: Option<&mut dyn FnMut(&mut DiagnosticBuilder<'_>)>, . label_expression_as_expected: bool, . ) { . // Incorporate whatever type inference information we have . // until now; in principle we might also want to process . // pending obligations, but doing so should only improve . // compatibility (hopefully that is true) by helping us . // uncover never types better. 6,989 ( 0.00%) if expression_ty.is_ty_var() { . expression_ty = fcx.infcx.shallow_resolve(expression_ty); . } . . // If we see any error types, just propagate that error . // upwards. 27,620 ( 0.00%) if expression_ty.references_error() || self.merged_ty().references_error() { . self.final_ty = Some(fcx.tcx.ty_error()); . return; . } . . // Handle the actual type unification etc. 3,684 ( 0.00%) let result = if let Some(expression) = expression { 20,394 ( 0.00%) if self.pushed == 0 { . // Special-case the first expression we are coercing. . // To be honest, I'm not entirely sure why we do this. . // We don't allow two-phase borrows, see comment in try_find_coercion_lub for why 7,101 ( 0.00%) fcx.try_coerce( . expression, . expression_ty, . self.expected_ty, . AllowTwoPhase::No, 3,156 ( 0.00%) Some(cause.clone()), . ) . } else { 12,018 ( 0.00%) match self.expressions { 184 ( 0.00%) Expressions::Dynamic(ref exprs) => fcx.try_find_coercion_lub( . cause, . exprs, . self.merged_ty(), . expression, . expression_ty, . ), 35,755 ( 0.00%) Expressions::UpFront(ref coercion_sites) => fcx.try_find_coercion_lub( . cause, 17,751 ( 0.00%) &coercion_sites[0..self.pushed], . self.merged_ty(), . expression, . expression_ty, . ), . } . } . } else { . // this is a hack for cases where we default to `()` because -- line 1389 ---------------------------------------- -- line 1394 ---------------------------------------- . // . // we wind up with a second match arm that is like `_ => . // ()`. That is the case we are considering here. We take . // a different path to get the right "expected, found" . // message and so forth (and because we know that . // `expression_ty` will be unit). . // . // Another example is `break` with no argument expression. 107 ( 0.00%) assert!(expression_ty.is_unit(), "if let hack without unit type"); 214 ( 0.00%) fcx.at(cause, fcx.param_env) . .eq_exp(label_expression_as_expected, expression_ty, self.merged_ty()) . .map(|infer_ok| { . fcx.register_infer_ok_obligations(infer_ok); . expression_ty . }) . }; . 14,048 ( 0.00%) match result { 7,012 ( 0.00%) Ok(v) => { 6,798 ( 0.00%) self.final_ty = Some(v); . if let Some(e) = expression { 13,596 ( 0.00%) match self.expressions { . Expressions::Dynamic(ref mut buffer) => buffer.push(e), 12,846 ( 0.00%) Expressions::UpFront(coercion_sites) => { . // if the user gave us an array to validate, check that we got . // the next expression in the list, as expected 24,946 ( 0.00%) assert_eq!( 19,269 ( 0.00%) coercion_sites[self.pushed].as_coercion_site().hir_id, . e.hir_id . ); . } . } 27,567 ( 0.00%) self.pushed += 1; . } . } . Err(coercion_error) => { . let (expected, found) = if label_expression_as_expected { . // In the case where this is a "forced unit", like . // `break`, we want to call the `()` "expected" . // since it is implied by the syntax. . // (Note: not all force-units work this way.)" -- line 1434 ---------------------------------------- -- line 1707 ---------------------------------------- . if let ty::Dynamic(..) = ty.kind() { . return true; . } . } . } . false . } . 904 ( 0.00%) pub fn complete<'a>(self, fcx: &FnCtxt<'a, 'tcx>) -> Ty<'tcx> { 2,661 ( 0.00%) if let Some(final_ty) = self.final_ty { . final_ty . } else { . // If we only had inputs that were of type `!` (or no . // inputs at all), then the final type is `!`. 104 ( 0.00%) assert_eq!(self.pushed, 0); 52 ( 0.00%) fcx.tcx.types.never . } 1,130 ( 0.00%) } . } . . /// Something that can be converted into an expression to which we can . /// apply a coercion. . pub trait AsCoercionSite { . fn as_coercion_site(&self) -> &hir::Expr<'_>; . } . -- line 1732 ---------------------------------------- -- line 1736 ---------------------------------------- . } . } . . impl<'a, T> AsCoercionSite for &'a T . where . T: AsCoercionSite, . { . fn as_coercion_site(&self) -> &hir::Expr<'_> { 399 ( 0.00%) (**self).as_coercion_site() . } . } . . impl AsCoercionSite for ! { . fn as_coercion_site(&self) -> &hir::Expr<'_> { . unreachable!() . } . } . . impl AsCoercionSite for hir::Arm<'_> { . fn as_coercion_site(&self) -> &hir::Expr<'_> { 694 ( 0.00%) &self.body . } . } 717,974 ( 0.04%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/context.rs -------------------------------------------------------------------------------- Ir -- line 118 ---------------------------------------- . stability: InternedSet<'tcx, attr::Stability>, . . /// `#[rustc_const_stable]` and `#[rustc_const_unstable]` attributes . const_stability: InternedSet<'tcx, attr::ConstStability>, . } . . impl<'tcx> CtxtInterners<'tcx> { . fn new(arena: &'tcx WorkerLocal>) -> CtxtInterners<'tcx> { 17 ( 0.00%) CtxtInterners { . arena, . type_: Default::default(), . type_list: Default::default(), . substs: Default::default(), . region: Default::default(), . poly_existential_predicates: Default::default(), . canonical_var_infos: Default::default(), . predicate: Default::default(), -- line 134 ---------------------------------------- -- line 143 ---------------------------------------- . stability: Default::default(), . const_stability: Default::default(), . } . } . . /// Interns a type. . #[allow(rustc::usage_of_ty_tykind)] . #[inline(never)] 923,344 ( 0.05%) fn intern_ty(&self, kind: TyKind<'tcx>) -> Ty<'tcx> { . self.type_ 577,090 ( 0.03%) .intern(kind, |kind| { 24,246 ( 0.00%) let flags = super::flags::FlagComputation::for_kind(&kind); . . let ty_struct = TyS { 48,492 ( 0.00%) kind, . flags: flags.flags, . outer_exclusive_binder: flags.outer_exclusive_binder, . }; . . Interned(self.arena.alloc(ty_struct)) . }) . .0 1,038,762 ( 0.06%) } . . #[inline(never)] 461,472 ( 0.03%) fn intern_predicate( . &self, . kind: Binder<'tcx, PredicateKind<'tcx>>, . ) -> &'tcx PredicateInner<'tcx> { . self.predicate 403,788 ( 0.02%) .intern(kind, |kind| { 54,264 ( 0.00%) let flags = super::flags::FlagComputation::for_predicate(kind); . . let predicate_struct = PredicateInner { . kind, . flags: flags.flags, . outer_exclusive_binder: flags.outer_exclusive_binder, . }; . . Interned(self.arena.alloc(predicate_struct)) . }) . .0 519,156 ( 0.03%) } . } . . pub struct CommonTypes<'tcx> { . pub unit: Ty<'tcx>, . pub bool: Ty<'tcx>, . pub char: Ty<'tcx>, . pub isize: Ty<'tcx>, . pub i8: Ty<'tcx>, -- line 193 ---------------------------------------- -- line 237 ---------------------------------------- . /// safely used as a key in the maps of a TypeckResults. For that to be . /// the case, the HirId must have the same `owner` as all the other IDs in . /// this table (signified by `hir_owner`). Otherwise the HirId . /// would be in a different frame of reference and using its `local_id` . /// would result in lookup errors, or worse, in silently wrong data being . /// stored/returned. . #[inline] . fn validate_hir_id_for_typeck_results(hir_owner: LocalDefId, hir_id: hir::HirId) { 453,626 ( 0.03%) if hir_id.owner != hir_owner { . invalid_hir_id_for_typeck_results(hir_owner, hir_id); . } . } . . #[cold] . #[inline(never)] . fn invalid_hir_id_for_typeck_results(hir_owner: LocalDefId, hir_id: hir::HirId) { . ty::tls::with(|tcx| { -- line 253 ---------------------------------------- -- line 261 ---------------------------------------- . } . . impl<'a, V> LocalTableInContext<'a, V> { . pub fn contains_key(&self, id: hir::HirId) -> bool { . validate_hir_id_for_typeck_results(self.hir_owner, id); . self.data.contains_key(&id.local_id) . } . 333,856 ( 0.02%) pub fn get(&self, id: hir::HirId) -> Option<&V> { 66,830 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, id); 66,830 ( 0.00%) self.data.get(&id.local_id) 267,192 ( 0.02%) } . . pub fn iter(&self) -> hash_map::Iter<'_, hir::ItemLocalId, V> { . self.data.iter() . } . } . . impl<'a, V> ::std::ops::Index for LocalTableInContext<'a, V> { . type Output = V; . 996 ( 0.00%) fn index(&self, key: hir::HirId) -> &V { . self.get(key).expect("LocalTableInContext: key not found") 664 ( 0.00%) } . } . . pub struct LocalTableInContextMut<'a, V> { . hir_owner: LocalDefId, . data: &'a mut ItemLocalMap, . } . . impl<'a, V> LocalTableInContextMut<'a, V> { -- line 292 ---------------------------------------- -- line 507 ---------------------------------------- . pub treat_byte_string_as_slice: ItemLocalSet, . . /// Contains the data for evaluating the effect of feature `capture_disjoint_fields` . /// on closure size. . pub closure_size_eval: FxHashMap>, . } . . impl<'tcx> TypeckResults<'tcx> { 3,672 ( 0.00%) pub fn new(hir_owner: LocalDefId) -> TypeckResults<'tcx> { 43,452 ( 0.00%) TypeckResults { . hir_owner, . type_dependent_defs: Default::default(), . field_indices: Default::default(), . user_provided_types: Default::default(), . user_provided_sigs: Default::default(), . node_types: Default::default(), . node_substs: Default::default(), . adjustments: Default::default(), -- line 524 ---------------------------------------- -- line 532 ---------------------------------------- . tainted_by_errors: None, . concrete_opaque_types: Default::default(), . closure_min_captures: Default::default(), . closure_fake_reads: Default::default(), . generator_interior_types: ty::Binder::dummy(Default::default()), . treat_byte_string_as_slice: Default::default(), . closure_size_eval: Default::default(), . } 3,672 ( 0.00%) } . . /// Returns the final resolution of a `QPath` in an `Expr` or `Pat` node. 63,387 ( 0.00%) pub fn qpath_res(&self, qpath: &hir::QPath<'_>, id: hir::HirId) -> Res { 42,258 ( 0.00%) match *qpath { 123,756 ( 0.01%) hir::QPath::Resolved(_, ref path) => path.res, . hir::QPath::TypeRelative(..) | hir::QPath::LangItem(..) => self . .type_dependent_def(id) 3,018 ( 0.00%) .map_or(Res::Err, |(kind, def_id)| Res::Def(kind, def_id)), . } 105,645 ( 0.01%) } . 109 ( 0.00%) pub fn type_dependent_defs( . &self, . ) -> LocalTableInContext<'_, Result<(DefKind, DefId), ErrorReported>> { 1,238 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.type_dependent_defs } 109 ( 0.00%) } . 1,210 ( 0.00%) pub fn type_dependent_def(&self, id: HirId) -> Option<(DefKind, DefId)> { 2,379 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, id); . self.type_dependent_defs.get(&id.local_id).cloned().and_then(|r| r.ok()) 2,420 ( 0.00%) } . 2,664 ( 0.00%) pub fn type_dependent_def_id(&self, id: HirId) -> Option { . self.type_dependent_def(id).map(|(_, def_id)| def_id) 2,664 ( 0.00%) } . 29,502 ( 0.00%) pub fn type_dependent_defs_mut( . &mut self, . ) -> LocalTableInContextMut<'_, Result<(DefKind, DefId), ErrorReported>> { 29,502 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.type_dependent_defs } 29,502 ( 0.00%) } . . pub fn field_indices(&self) -> LocalTableInContext<'_, usize> { 1,286 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.field_indices } 285 ( 0.00%) } . . pub fn field_indices_mut(&mut self) -> LocalTableInContextMut<'_, usize> { 2,022 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.field_indices } 1,011 ( 0.00%) } . . pub fn user_provided_types(&self) -> LocalTableInContext<'_, CanonicalUserType<'tcx>> { 13,418 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.user_provided_types } 6,709 ( 0.00%) } . . pub fn user_provided_types_mut( . &mut self, . ) -> LocalTableInContextMut<'_, CanonicalUserType<'tcx>> { 456 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.user_provided_types } 228 ( 0.00%) } . . pub fn node_types(&self) -> LocalTableInContext<'_, Ty<'tcx>> { 60,198 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.node_types } 30,099 ( 0.00%) } . . pub fn node_types_mut(&mut self) -> LocalTableInContextMut<'_, Ty<'tcx>> { 116,050 ( 0.01%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.node_types } 58,025 ( 0.00%) } . 614,994 ( 0.04%) pub fn node_type(&self, id: hir::HirId) -> Ty<'tcx> { 102,499 ( 0.01%) self.node_type_opt(id).unwrap_or_else(|| { . bug!("node_type: no type for node `{}`", tls::with(|tcx| tcx.hir().node_to_string(id))) . }) 512,495 ( 0.03%) } . 130,652 ( 0.01%) pub fn node_type_opt(&self, id: hir::HirId) -> Option> { 130,652 ( 0.01%) validate_hir_id_for_typeck_results(self.hir_owner, id); . self.node_types.get(&id.local_id).cloned() 261,304 ( 0.02%) } . . pub fn node_substs_mut(&mut self) -> LocalTableInContextMut<'_, SubstsRef<'tcx>> { 2,670 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.node_substs } 1,335 ( 0.00%) } . 41,019 ( 0.00%) pub fn node_substs(&self, id: hir::HirId) -> SubstsRef<'tcx> { 41,019 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, id); . self.node_substs.get(&id.local_id).cloned().unwrap_or_else(|| InternalSubsts::empty()) 82,038 ( 0.00%) } . 28,187 ( 0.00%) pub fn node_substs_opt(&self, id: hir::HirId) -> Option> { 28,187 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, id); . self.node_substs.get(&id.local_id).cloned() 56,374 ( 0.00%) } . . // Returns the type of a pattern as a monotype. Like @expr_ty, this function . // doesn't provide type parameter substitutions. . pub fn pat_ty(&self, pat: &hir::Pat<'_>) -> Ty<'tcx> { 1,624 ( 0.00%) self.node_type(pat.hir_id) . } . . // Returns the type of an expression as a monotype. . // . // NB (1): This is the PRE-ADJUSTMENT TYPE for the expression. That is, in . // some cases, we insert `Adjustment` annotations such as auto-deref or . // auto-ref. The type returned by this function does not consider such . // adjustments. See `expr_ty_adjusted()` instead. . // . // NB (2): This type doesn't provide type parameter substitutions; e.g., if you . // ask for the type of "id" in "id(3)", it will return "fn(&isize) -> isize" . // instead of "fn(ty) -> T with T = isize". . pub fn expr_ty(&self, expr: &hir::Expr<'_>) -> Ty<'tcx> { 109,362 ( 0.01%) self.node_type(expr.hir_id) . } . . pub fn expr_ty_opt(&self, expr: &hir::Expr<'_>) -> Option> { 110,686 ( 0.01%) self.node_type_opt(expr.hir_id) . } . . pub fn adjustments(&self) -> LocalTableInContext<'_, Vec>> { 55,696 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.adjustments } 27,848 ( 0.00%) } . . pub fn adjustments_mut( . &mut self, . ) -> LocalTableInContextMut<'_, Vec>> { 62,414 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.adjustments } 31,207 ( 0.00%) } . 54,220 ( 0.00%) pub fn expr_adjustments(&self, expr: &hir::Expr<'_>) -> &[ty::adjustment::Adjustment<'tcx>] { 108,440 ( 0.01%) validate_hir_id_for_typeck_results(self.hir_owner, expr.hir_id); . self.adjustments.get(&expr.hir_id.local_id).map_or(&[], |a| &a[..]) 108,440 ( 0.01%) } . . /// Returns the type of `expr`, considering any `Adjustment` . /// entry recorded for that expression. 1,485 ( 0.00%) pub fn expr_ty_adjusted(&self, expr: &hir::Expr<'_>) -> Ty<'tcx> { 297 ( 0.00%) self.expr_adjustments(expr).last().map_or_else(|| self.expr_ty(expr), |adj| adj.target) 748 ( 0.00%) } . 910 ( 0.00%) pub fn expr_ty_adjusted_opt(&self, expr: &hir::Expr<'_>) -> Option> { 182 ( 0.00%) self.expr_adjustments(expr).last().map(|adj| adj.target).or_else(|| self.expr_ty_opt(expr)) 512 ( 0.00%) } . 1,129 ( 0.00%) pub fn is_method_call(&self, expr: &hir::Expr<'_>) -> bool { . // Only paths and method calls/overloaded operators have . // entries in type_dependent_defs, ignore the former here. 2,258 ( 0.00%) if let hir::ExprKind::Path(_) = expr.kind { . return false; . } . 2,938 ( 0.00%) matches!(self.type_dependent_defs().get(expr.hir_id), Some(Ok((DefKind::AssocFn, _)))) 2,258 ( 0.00%) } . 4,077 ( 0.00%) pub fn extract_binding_mode(&self, s: &Session, id: HirId, sp: Span) -> Option { . self.pat_binding_modes().get(id).copied().or_else(|| { . s.delay_span_bug(sp, "missing binding mode"); . None . }) 5,436 ( 0.00%) } . . pub fn pat_binding_modes(&self) -> LocalTableInContext<'_, BindingMode> { 3,469 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.pat_binding_modes } 1,055 ( 0.00%) } . . pub fn pat_binding_modes_mut(&mut self) -> LocalTableInContextMut<'_, BindingMode> { 1,792 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.pat_binding_modes } 896 ( 0.00%) } . . pub fn pat_adjustments(&self) -> LocalTableInContext<'_, Vec>> { 7,734 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.pat_adjustments } 3,867 ( 0.00%) } . . pub fn pat_adjustments_mut(&mut self) -> LocalTableInContextMut<'_, Vec>> { 2,360 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.pat_adjustments } 1,180 ( 0.00%) } . . /// For a given closure, returns the iterator of `ty::CapturedPlace`s that are captured . /// by the closure. 1,136 ( 0.00%) pub fn closure_min_captures_flattened( . &self, . closure_def_id: DefId, . ) -> impl Iterator> { . self.closure_min_captures . .get(&closure_def_id) . .map(|closure_min_captures| closure_min_captures.values().flat_map(|v| v.iter())) . .into_iter() . .flatten() 1,420 ( 0.00%) } . . pub fn closure_kind_origins(&self) -> LocalTableInContext<'_, (Span, HirPlace<'tcx>)> { 308 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.closure_kind_origins } 154 ( 0.00%) } . . pub fn closure_kind_origins_mut( . &mut self, . ) -> LocalTableInContextMut<'_, (Span, HirPlace<'tcx>)> { . LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.closure_kind_origins } . } . . pub fn liberated_fn_sigs(&self) -> LocalTableInContext<'_, ty::FnSig<'tcx>> { 972 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.liberated_fn_sigs } 486 ( 0.00%) } . . pub fn liberated_fn_sigs_mut(&mut self) -> LocalTableInContextMut<'_, ty::FnSig<'tcx>> { 664 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.liberated_fn_sigs } 332 ( 0.00%) } . . pub fn fru_field_types(&self) -> LocalTableInContext<'_, Vec>> { 308 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.fru_field_types } 154 ( 0.00%) } . . pub fn fru_field_types_mut(&mut self) -> LocalTableInContextMut<'_, Vec>> { . LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.fru_field_types } . } . 78 ( 0.00%) pub fn is_coercion_cast(&self, hir_id: hir::HirId) -> bool { 26 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, hir_id); . self.coercion_casts.contains(&hir_id.local_id) 52 ( 0.00%) } . . pub fn set_coercion_cast(&mut self, id: ItemLocalId) { . self.coercion_casts.insert(id); . } . . pub fn coercion_casts(&self) -> &ItemLocalSet { 154 ( 0.00%) &self.coercion_casts 154 ( 0.00%) } . } . . impl<'a, 'tcx> HashStable> for TypeckResults<'tcx> { . fn hash_stable(&self, hcx: &mut StableHashingContext<'a>, hasher: &mut StableHasher) { . let ty::TypeckResults { . hir_owner, . ref type_dependent_defs, . ref field_indices, -- line 764 ---------------------------------------- -- line 819 ---------------------------------------- . const START_INDEX = 0, . } . } . . /// Mapping of type annotation indices to canonical user type annotations. . pub type CanonicalUserTypeAnnotations<'tcx> = . IndexVec>; . 242 ( 0.00%) #[derive(Clone, Debug, TyEncodable, TyDecodable, HashStable, TypeFoldable, Lift)] . pub struct CanonicalUserTypeAnnotation<'tcx> { . pub user_ty: CanonicalUserType<'tcx>, . pub span: Span, 121 ( 0.00%) pub inferred_ty: Ty<'tcx>, . } . . /// Canonicalized user type annotation. . pub type CanonicalUserType<'tcx> = Canonical<'tcx, UserType<'tcx>>; . . impl<'tcx> CanonicalUserType<'tcx> { . /// Returns `true` if this represents a substitution of the form `[?0, ?1, ?2]`, . /// i.e., each thing is mapped to a canonical variable with the same index. 366 ( 0.00%) pub fn is_identity(&self) -> bool { 732 ( 0.00%) match self.value { . UserType::Ty(_) => false, . UserType::TypeOf(_, user_substs) => { 366 ( 0.00%) if user_substs.user_self_ty.is_some() { . return false; . } . . iter::zip(user_substs.substs, BoundVar::new(0)..).all(|(kind, cvar)| { . match kind.unpack() { 602 ( 0.00%) GenericArgKind::Type(ty) => match ty.kind() { . ty::Bound(debruijn, b) => { . // We only allow a `ty::INNERMOST` index in substitutions. 301 ( 0.00%) assert_eq!(*debruijn, ty::INNERMOST); . cvar == b.var . } . _ => false, . }, . 64 ( 0.00%) GenericArgKind::Lifetime(r) => match r { . ty::ReLateBound(debruijn, br) => { . // We only allow a `ty::INNERMOST` index in substitutions. . assert_eq!(*debruijn, ty::INNERMOST); . cvar == br.var . } . _ => false, . }, . -- line 867 ---------------------------------------- -- line 872 ---------------------------------------- . cvar == b . } . _ => false, . }, . } . }) . } . } 732 ( 0.00%) } . } . . /// A user-given type annotation attached to a constant. These arise . /// from constants that are named via paths, like `Foo::::new` and . /// so forth. 726 ( 0.00%) #[derive(Copy, Clone, Debug, PartialEq, TyEncodable, TyDecodable)] 4,648 ( 0.00%) #[derive(HashStable, TypeFoldable, Lift)] . pub enum UserType<'tcx> { . Ty(Ty<'tcx>), . . /// The canonical type is the result of `type_of(def_id)` with the . /// given substitutions applied. . TypeOf(DefId, UserSubsts<'tcx>), . } . . impl<'tcx> CommonTypes<'tcx> { . fn new(interners: &CtxtInterners<'tcx>) -> CommonTypes<'tcx> { 111 ( 0.00%) let mk = |ty| interners.intern_ty(ty); . . CommonTypes { . unit: mk(Tuple(List::empty())), . bool: mk(Bool), . char: mk(Char), . never: mk(Never), . isize: mk(Int(ty::IntTy::Isize)), . i8: mk(Int(ty::IntTy::I8)), -- line 906 ---------------------------------------- -- line 921 ---------------------------------------- . . trait_object_dummy_self: mk(Infer(ty::FreshTy(0))), . } . } . } . . impl<'tcx> CommonLifetimes<'tcx> { . fn new(interners: &CtxtInterners<'tcx>) -> CommonLifetimes<'tcx> { 67 ( 0.00%) let mk = |r| interners.region.intern(r, |r| Interned(interners.arena.alloc(r))).0; . . CommonLifetimes { 5 ( 0.00%) re_root_empty: mk(RegionKind::ReEmpty(ty::UniverseIndex::ROOT)), 5 ( 0.00%) re_static: mk(RegionKind::ReStatic), 5 ( 0.00%) re_erased: mk(RegionKind::ReErased), . } . } . } . . impl<'tcx> CommonConsts<'tcx> { . fn new(interners: &CtxtInterners<'tcx>, types: &CommonTypes<'tcx>) -> CommonConsts<'tcx> { 6 ( 0.00%) let mk_const = |c| interners.const_.intern(c, |c| Interned(interners.arena.alloc(c))).0; . . CommonConsts { . unit: mk_const(ty::Const { . val: ty::ConstKind::Value(ConstValue::Scalar(Scalar::ZST)), . ty: types.unit, . }), . } . } -- line 949 ---------------------------------------- -- line 1045 ---------------------------------------- . . /// Stores memory for globals (statics/consts). . pub(crate) alloc_map: Lock>, . . output_filenames: Arc, . } . . impl<'tcx> TyCtxt<'tcx> { 7,320 ( 0.00%) pub fn typeck_opt_const_arg( . self, . def: ty::WithOptConstParam, . ) -> &'tcx TypeckResults<'tcx> { 2,928 ( 0.00%) if let Some(param_did) = def.const_param_did { . self.typeck_const_arg((def.did, param_did)) . } else { . self.typeck(def.did) . } 5,856 ( 0.00%) } . 528 ( 0.00%) pub fn alloc_steal_thir(self, thir: Thir<'tcx>) -> &'tcx Steal> { 176 ( 0.00%) self.arena.alloc(Steal::new(thir)) 704 ( 0.00%) } . 2,690 ( 0.00%) pub fn alloc_steal_mir(self, mir: Body<'tcx>) -> &'tcx Steal> { 538 ( 0.00%) self.arena.alloc(Steal::new(mir)) 3,766 ( 0.00%) } . 704 ( 0.00%) pub fn alloc_steal_promoted( . self, . promoted: IndexVec>, . ) -> &'tcx Steal>> { 176 ( 0.00%) self.arena.alloc(Steal::new(promoted)) 880 ( 0.00%) } . 405 ( 0.00%) pub fn alloc_adt_def( . self, . did: DefId, . kind: AdtKind, . variants: IndexVec, . repr: ReprOptions, . ) -> &'tcx ty::AdtDef { 720 ( 0.00%) self.intern_adt_def(ty::AdtDef::new(self, did, kind, variants, repr)) 180 ( 0.00%) } . . /// Allocates a read-only byte or string literal for `mir::interpret`. . pub fn allocate_bytes(self, bytes: &[u8]) -> interpret::AllocId { . // Create an allocation that just contains these bytes. . let alloc = interpret::Allocation::from_bytes_byte_aligned_immutable(bytes); . let alloc = self.intern_const_alloc(alloc); . self.create_memory_alloc(alloc) . } . . /// Returns a range of the start/end indices specified with the . /// `rustc_layout_scalar_valid_range` attribute. . // FIXME(eddyb) this is an awkward spot for this method, maybe move it? 43,136 ( 0.00%) pub fn layout_scalar_valid_range(self, def_id: DefId) -> (Bound, Bound) { 21,568 ( 0.00%) let attrs = self.get_attrs(def_id); 91,664 ( 0.01%) let get = |name| { 21,568 ( 0.00%) let attr = match attrs.iter().find(|a| a.has_name(name)) { . Some(attr) => attr, . None => return Bound::Unbounded, . }; . debug!("layout_scalar_valid_range: attr={:?}", attr); . if let Some( . &[ . ast::NestedMetaItem::Literal(ast::Lit { . kind: ast::LitKind::Int(a, _), .. -- line 1111 ---------------------------------------- -- line 1114 ---------------------------------------- . ) = attr.meta_item_list().as_deref() . { . Bound::Included(a) . } else { . self.sess . .delay_span_bug(attr.span, "invalid rustc_layout_scalar_valid_range attribute"); . Bound::Unbounded . } 107,840 ( 0.01%) }; 32,352 ( 0.00%) ( 32,352 ( 0.00%) get(sym::rustc_layout_scalar_valid_range_start), 16,176 ( 0.00%) get(sym::rustc_layout_scalar_valid_range_end), . ) 43,136 ( 0.00%) } . . pub fn lift>(self, value: T) -> Option { . value.lift_to_tcx(self) . } . . /// Creates a type context and call the closure with a `TyCtxt` reference . /// to the context. The closure enforces that the type context and any interned . /// value (types, substs, etc.) can only be used while `ty::tls` has a valid . /// reference to the context, to allow formatting values that need it. 23 ( 0.00%) pub fn create_global_ctxt( . s: &'tcx Session, . lint_store: Lrc, . arena: &'tcx WorkerLocal>, . resolutions: ty::ResolverOutputs, . krate: &'tcx hir::Crate<'tcx>, . dep_graph: DepGraph, . on_disk_cache: Option<&'tcx dyn OnDiskCache<'tcx>>, . queries: &'tcx dyn query::QueryEngine<'tcx>, . query_kinds: &'tcx [DepKindStruct], . crate_name: &str, . output_filenames: OutputFilenames, . ) -> GlobalCtxt<'tcx> { 1 ( 0.00%) let data_layout = TargetDataLayout::parse(&s.target).unwrap_or_else(|err| { . s.fatal(&err); . }); . let interners = CtxtInterners::new(arena); . let common_types = CommonTypes::new(&interners); . let common_lifetimes = CommonLifetimes::new(&interners); . let common_consts = CommonConsts::new(&interners, &common_types); . 127 ( 0.00%) GlobalCtxt { . sess: s, 6 ( 0.00%) lint_store, . arena, 2 ( 0.00%) interners, 5 ( 0.00%) dep_graph, 4 ( 0.00%) untracked_resolutions: resolutions, 2 ( 0.00%) prof: s.prof.clone(), . types: common_types, . lifetimes: common_lifetimes, . consts: common_consts, . untracked_crate: krate, . on_disk_cache, . queries, . query_caches: query::QueryCaches::default(), . query_kinds, . ty_rcache: Default::default(), . pred_rcache: Default::default(), . selection_cache: Default::default(), . evaluation_cache: Default::default(), 1 ( 0.00%) crate_name: Symbol::intern(crate_name), . data_layout, . alloc_map: Lock::new(interpret::AllocMap::new()), . output_filenames: Arc::new(output_filenames), . } 9 ( 0.00%) } . . crate fn query_kind(self, k: DepKind) -> &'tcx DepKindStruct { . &self.query_kinds[k as usize] . } . . /// Constructs a `TyKind::Error` type and registers a `delay_span_bug` to ensure it gets used. . #[track_caller] . pub fn ty_error(self) -> Ty<'tcx> { -- line 1191 ---------------------------------------- -- line 1217 ---------------------------------------- . ty: Ty<'tcx>, . span: S, . msg: &str, . ) -> &'tcx Const<'tcx> { . self.sess.delay_span_bug(span, msg); . self.mk_const(ty::Const { val: ty::ConstKind::Error(DelaySpanBugEmitted(())), ty }) . } . 161 ( 0.00%) pub fn consider_optimizing String>(self, msg: T) -> bool { 23 ( 0.00%) let cname = self.crate_name(LOCAL_CRATE); 184 ( 0.00%) self.sess.consider_optimizing(cname.as_str(), msg) 184 ( 0.00%) } . . /// Obtain all lang items of this crate and all dependencies (recursively) 1,114,806 ( 0.06%) pub fn lang_items(self) -> &'tcx rustc_hir::lang_items::LanguageItems { . self.get_lang_items(()) 1,433,322 ( 0.08%) } . . /// Obtain the given diagnostic item's `DefId`. Use `is_diagnostic_item` if you just want to . /// compare against another `DefId`, since `is_diagnostic_item` is cheaper. 77 ( 0.00%) pub fn get_diagnostic_item(self, name: Symbol) -> Option { . self.all_diagnostic_items(()).name_to_id.get(&name).copied() 88 ( 0.00%) } . . /// Obtain the diagnostic item's name 6,881 ( 0.00%) pub fn get_diagnostic_name(self, id: DefId) -> Option { . self.diagnostic_items(id.krate).id_to_name.get(&id).copied() 7,864 ( 0.00%) } . . /// Check whether the diagnostic item with the given `name` has the given `DefId`. 8,001 ( 0.00%) pub fn is_diagnostic_item(self, name: Symbol, did: DefId) -> bool { . self.diagnostic_items(did.krate).name_to_id.get(&name) == Some(&did) 9,144 ( 0.00%) } . 3,822 ( 0.00%) pub fn stability(self) -> &'tcx stability::Index<'tcx> { . self.stability_index(()) 4,914 ( 0.00%) } . 368,984 ( 0.02%) pub fn features(self) -> &'tcx rustc_feature::Features { . self.features_query(()) 421,696 ( 0.02%) } . . pub fn def_key(self, id: DefId) -> rustc_hir::definitions::DefKey { . // Accessing the DefKey is ok, since it is part of DefPathHash. 42,276 ( 0.00%) if let Some(id) = id.as_local() { . self.untracked_resolutions.definitions.def_key(id) . } else { 2,145 ( 0.00%) self.untracked_resolutions.cstore.def_key(id) . } . } . . /// Converts a `DefId` into its fully expanded `DefPath` (every . /// `DefId` is really just an interned `DefPath`). . /// . /// Note that if `id` is not local to this crate, the result will . /// be a non-local `DefPath`. -- line 1272 ---------------------------------------- -- line 1277 ---------------------------------------- . } else { . self.untracked_resolutions.cstore.def_path(id) . } . } . . #[inline] . pub fn def_path_hash(self, def_id: DefId) -> rustc_hir::definitions::DefPathHash { . // Accessing the DefPathHash is ok, it is incr. comp. stable. 1,925 ( 0.00%) if let Some(def_id) = def_id.as_local() { . self.untracked_resolutions.definitions.def_path_hash(def_id) . } else { 116 ( 0.00%) self.untracked_resolutions.cstore.def_path_hash(def_id) . } . } . . #[inline] . pub fn stable_crate_id(self, crate_num: CrateNum) -> StableCrateId { . if crate_num == LOCAL_CRATE { . self.sess.local_stable_crate_id() . } else { -- line 1296 ---------------------------------------- -- line 1353 ---------------------------------------- . &(format!("{:08x}", stable_crate_id.to_u64()))[..4], . self.def_path(def_id).to_string_no_crate_verbose() . ) . } . . /// Note that this is *untracked* and should only be used within the query . /// system if the result is otherwise tracked through queries . pub fn cstore_untracked(self) -> &'tcx ty::CrateStoreDyn { 14,232 ( 0.00%) &*self.untracked_resolutions.cstore 7,116 ( 0.00%) } . . /// Note that this is *untracked* and should only be used within the query . /// system if the result is otherwise tracked through queries . pub fn definitions_untracked(self) -> &'tcx hir::definitions::Definitions { . &self.untracked_resolutions.definitions . } . . #[inline(always)] . pub fn create_stable_hashing_context(self) -> StableHashingContext<'tcx> { 11 ( 0.00%) let resolutions = &self.gcx.untracked_resolutions; 54 ( 0.00%) StableHashingContext::new(self.sess, &resolutions.definitions, &*resolutions.cstore) . } . . #[inline(always)] . pub fn create_no_span_stable_hashing_context(self) -> StableHashingContext<'tcx> { . let resolutions = &self.gcx.untracked_resolutions; . StableHashingContext::ignore_spans( . self.sess, . &resolutions.definitions, -- line 1381 ---------------------------------------- -- line 1390 ---------------------------------------- . /// If `true`, we should use the MIR-based borrowck, but also . /// fall back on the AST borrowck if the MIR-based one errors. . pub fn migrate_borrowck(self) -> bool { . self.borrowck_mode().migrate() . } . . /// What mode(s) of borrowck should we run? AST? MIR? both? . /// (Also considers the `#![feature(nll)]` setting.) 308 ( 0.00%) pub fn borrowck_mode(self) -> BorrowckMode { . // Here are the main constraints we need to deal with: . // . // 1. An opts.borrowck_mode of `BorrowckMode::Migrate` is . // synonymous with no `-Z borrowck=...` flag at all. . // . // 2. We want to allow developers on the Nightly channel . // to opt back into the "hard error" mode for NLL, . // (which they can do via specifying `#![feature(nll)]` -- line 1406 ---------------------------------------- -- line 1413 ---------------------------------------- . // errors. (To simplify the code here, it now even overrides . // a user's attempt to specify `-Z borrowck=compare`, which . // we arguably do not need anymore and should remove.) . // . // * Otherwise, if no `-Z borrowck=...` then use migrate mode . // . // * Otherwise, use the behavior requested via `-Z borrowck=...` . 462 ( 0.00%) if self.features().nll { . return BorrowckMode::Mir; . } . 154 ( 0.00%) self.sess.opts.borrowck_mode 616 ( 0.00%) } . . /// If `true`, we should use lazy normalization for constants, otherwise . /// we still evaluate them eagerly. . #[inline] . pub fn lazy_normalization(self) -> bool { 10 ( 0.00%) let features = self.features(); . // Note: We only use lazy normalization for generic const expressions. 6 ( 0.00%) features.generic_const_exprs . } . . #[inline] . pub fn local_crate_exports_generics(self) -> bool { . debug_assert!(self.sess.opts.share_generics()); . . self.sess.crate_types().iter().any(|crate_type| { . match crate_type { -- line 1442 ---------------------------------------- -- line 1554 ---------------------------------------- . self.mk_imm_ref( . self.lifetimes.re_static, . self.type_of(self.require_lang_item(LangItem::PanicLocation, None)) . .subst(self, self.mk_substs([self.lifetimes.re_static.into()].iter())), . ) . } . . /// Returns a displayable description and article for the given `def_id` (e.g. `("a", "struct")`). 1,188 ( 0.00%) pub fn article_and_description(self, def_id: DefId) -> (&'static str, &'static str) { 864 ( 0.00%) match self.def_kind(def_id) { . DefKind::Generator => match self.generator_kind(def_id).unwrap() { . rustc_hir::GeneratorKind::Async(..) => ("an", "async closure"), . rustc_hir::GeneratorKind::Gen => ("a", "generator"), . }, 1,944 ( 0.00%) def_kind => (def_kind.article(), def_kind.descr(def_id)), . } 972 ( 0.00%) } . . pub fn type_length_limit(self) -> Limit { . self.limits(()).type_length_limit . } . 176,442 ( 0.01%) pub fn recursion_limit(self) -> Limit { . self.limits(()).recursion_limit 201,648 ( 0.01%) } . . pub fn move_size_limit(self) -> Limit { . self.limits(()).move_size_limit . } . 196 ( 0.00%) pub fn const_eval_limit(self) -> Limit { . self.limits(()).const_eval_limit 224 ( 0.00%) } . . pub fn all_traits(self) -> impl Iterator + 'tcx { . iter::once(LOCAL_CRATE) . .chain(self.crates(()).iter().copied()) . .flat_map(move |cnum| self.traits_in_crate(cnum).iter().copied()) . } . } . -- line 1594 ---------------------------------------- -- line 1684 ---------------------------------------- . /// This is the implicit state of rustc. It contains the current . /// `TyCtxt` and query. It is updated when creating a local interner or . /// executing a new query. Whenever there's a `TyCtxt` value available . /// you should also have access to an `ImplicitCtxt` through the functions . /// in this module. . #[derive(Clone)] . pub struct ImplicitCtxt<'a, 'tcx> { . /// The current `TyCtxt`. 1 ( 0.00%) pub tcx: TyCtxt<'tcx>, . . /// The current query job, if any. This is updated by `JobOwner::start` in . /// `ty::query::plumbing` when executing a query. . pub query: Option>, . . /// Where to store diagnostics for the current query job, if any. . /// This is updated by `JobOwner::start` in `ty::query::plumbing` when executing a query. . pub diagnostics: Option<&'a Lock>>, -- line 1700 ---------------------------------------- -- line 1703 ---------------------------------------- . pub layout_depth: usize, . . /// The current dep graph task. This is used to add dependencies to queries . /// when executing them. . pub task_deps: TaskDepsRef<'a>, . } . . impl<'a, 'tcx> ImplicitCtxt<'a, 'tcx> { 5 ( 0.00%) pub fn new(gcx: &'tcx GlobalCtxt<'tcx>) -> Self { . let tcx = TyCtxt { gcx }; 25 ( 0.00%) ImplicitCtxt { . tcx, . query: None, . diagnostics: None, . layout_depth: 0, . task_deps: TaskDepsRef::Ignore, . } 5 ( 0.00%) } . } . . /// Sets Rayon's thread-local variable, which is preserved for Rayon jobs . /// to `value` during the call to `f`. It is restored to its previous value after. . /// This is used to set the pointer to the new `ImplicitCtxt`. . #[cfg(parallel_compiler)] . #[inline] . fn set_tlv R, R>(value: usize, f: F) -> R { -- line 1728 ---------------------------------------- -- line 1745 ---------------------------------------- . . /// Sets TLV to `value` during the call to `f`. . /// It is restored to its previous value after. . /// This is used to set the pointer to the new `ImplicitCtxt`. . #[cfg(not(parallel_compiler))] . #[inline] . fn set_tlv R, R>(value: usize, f: F) -> R { . let old = get_tlv(); 28,502 ( 0.00%) let _reset = rustc_data_structures::OnDrop(move || TLV.with(|tlv| tlv.set(old))); . TLV.with(|tlv| tlv.set(value)); . f() . } . . /// Gets the pointer to the current `ImplicitCtxt`. . #[cfg(not(parallel_compiler))] . #[inline] . fn get_tlv() -> usize { -- line 1761 ---------------------------------------- -- line 1763 ---------------------------------------- . } . . /// Sets `context` as the new current `ImplicitCtxt` for the duration of the function `f`. . #[inline] . pub fn enter_context<'a, 'tcx, F, R>(context: &ImplicitCtxt<'a, 'tcx>, f: F) -> R . where . F: FnOnce(&ImplicitCtxt<'a, 'tcx>) -> R, . { 1 ( 0.00%) set_tlv(context as *const _ as usize, || f(&context)) . } . . /// Allows access to the current `ImplicitCtxt` in a closure if one is available. . #[inline] . pub fn with_context_opt(f: F) -> R . where . F: for<'a, 'tcx> FnOnce(Option<&ImplicitCtxt<'a, 'tcx>>) -> R, . { . let context = get_tlv(); 130,820 ( 0.01%) if context == 0 { . f(None) . } else { . // We could get an `ImplicitCtxt` pointer from another thread. . // Ensure that `ImplicitCtxt` is `Sync`. . sync::assert_sync::>(); . . unsafe { f(Some(&*(context as *const ImplicitCtxt<'_, '_>))) } . } -- line 1789 ---------------------------------------- -- line 1805 ---------------------------------------- . /// This will panic if you pass it a `TyCtxt` which is different from the current . /// `ImplicitCtxt`'s `tcx` field. . #[inline] . pub fn with_related_context<'tcx, F, R>(tcx: TyCtxt<'tcx>, f: F) -> R . where . F: FnOnce(&ImplicitCtxt<'_, 'tcx>) -> R, . { . with_context(|context| unsafe { 64,712 ( 0.00%) assert!(ptr_eq(context.tcx.gcx, tcx.gcx)); . let context: &ImplicitCtxt<'_, '_> = mem::transmute(context); 64,644 ( 0.00%) f(context) . }) . } . . /// Allows access to the `TyCtxt` in the current `ImplicitCtxt`. . /// Panics if there is no `ImplicitCtxt` available. . #[inline] . pub fn with(f: F) -> R . where -- line 1823 ---------------------------------------- -- line 1981 ---------------------------------------- . fn into_pointer(&self) -> *const () { . self.0 as *const _ as *const () . } . } . . #[allow(rustc::usage_of_ty_tykind)] . impl<'tcx> Borrow> for Interned<'tcx, TyS<'tcx>> { . fn borrow<'a>(&'a self) -> &'a TyKind<'tcx> { 105,178 ( 0.01%) &self.0.kind() . } . } . . impl<'tcx> PartialEq for Interned<'tcx, TyS<'tcx>> { . fn eq(&self, other: &Interned<'tcx, TyS<'tcx>>) -> bool { . // The `Borrow` trait requires that `x.borrow() == y.borrow()` equals . // `x == y`. . self.0.kind() == other.0.kind() -- line 1997 ---------------------------------------- -- line 1998 ---------------------------------------- . } . } . . impl<'tcx> Eq for Interned<'tcx, TyS<'tcx>> {} . . impl<'tcx> Hash for Interned<'tcx, TyS<'tcx>> { . fn hash(&self, s: &mut H) { . // The `Borrow` trait requires that `x.borrow().hash(s) == x.hash(s)`. 42,996 ( 0.00%) self.0.kind().hash(s) . } . } . . impl<'tcx> Borrow>> for Interned<'tcx, PredicateInner<'tcx>> { . fn borrow<'a>(&'a self) -> &'a Binder<'tcx, PredicateKind<'tcx>> { 49,711 ( 0.00%) &self.0.kind . } . } . . impl<'tcx> PartialEq for Interned<'tcx, PredicateInner<'tcx>> { . fn eq(&self, other: &Interned<'tcx, PredicateInner<'tcx>>) -> bool { . // The `Borrow` trait requires that `x.borrow() == y.borrow()` equals . // `x == y`. . self.0.kind == other.0.kind -- line 2020 ---------------------------------------- -- line 2021 ---------------------------------------- . } . } . . impl<'tcx> Eq for Interned<'tcx, PredicateInner<'tcx>> {} . . impl<'tcx> Hash for Interned<'tcx, PredicateInner<'tcx>> { . fn hash(&self, s: &mut H) { . // The `Borrow` trait requires that `x.borrow().hash(s) == x.hash(s)`. 14,332 ( 0.00%) self.0.kind.hash(s) . } . } . . impl<'tcx, T> Borrow<[T]> for Interned<'tcx, List> { . fn borrow<'a>(&'a self) -> &'a [T] { 172,418 ( 0.01%) &self.0[..] . } . } . . impl<'tcx, T: PartialEq> PartialEq for Interned<'tcx, List> { . fn eq(&self, other: &Interned<'tcx, List>) -> bool { . // The `Borrow` trait requires that `x.borrow() == y.borrow()` equals . // `x == y`. . self.0[..] == other.0[..] -- line 2043 ---------------------------------------- -- line 2044 ---------------------------------------- . } . } . . impl<'tcx, T: Eq> Eq for Interned<'tcx, List> {} . . impl<'tcx, T: Hash> Hash for Interned<'tcx, List> { . fn hash(&self, s: &mut H) { . // The `Borrow` trait requires that `x.borrow().hash(s) == x.hash(s)`. 18,487 ( 0.00%) self.0[..].hash(s) . } . } . . macro_rules! direct_interners { . ($($name:ident: $method:ident($ty:ty),)+) => { . $(impl<'tcx> Borrow<$ty> for Interned<'tcx, $ty> { . fn borrow<'a>(&'a self) -> &'a $ty { 71,388 ( 0.00%) &self.0 . } . } . . impl<'tcx> PartialEq for Interned<'tcx, $ty> { . fn eq(&self, other: &Self) -> bool { . // The `Borrow` trait requires that `x.borrow() == y.borrow()` . // equals `x == y`. . self.0 == other.0 -- line 2068 ---------------------------------------- -- line 2070 ---------------------------------------- . } . . impl<'tcx> Eq for Interned<'tcx, $ty> {} . . impl<'tcx> Hash for Interned<'tcx, $ty> { . fn hash(&self, s: &mut H) { . // The `Borrow` trait requires that `x.borrow().hash(s) == . // x.hash(s)`. 27,786 ( 0.00%) self.0.hash(s) . } . } . . impl<'tcx> TyCtxt<'tcx> { 656,845 ( 0.04%) pub fn $method(self, v: $ty) -> &'tcx $ty { 312,465 ( 0.02%) self.interners.$name.intern(v, |v| { 7,233 ( 0.00%) Interned(self.interners.arena.alloc(v)) . }).0 700,443 ( 0.04%) } . })+ . } . } . . direct_interners! { . region: mk_region(RegionKind), . const_: mk_const(Const<'tcx>), . const_allocation: intern_const_alloc(Allocation), -- line 2095 ---------------------------------------- -- line 2097 ---------------------------------------- . adt_def: intern_adt_def(AdtDef), . stability: intern_stability(attr::Stability), . const_stability: intern_const_stability(attr::ConstStability), . } . . macro_rules! slice_interners { . ($($field:ident: $method:ident($ty:ty)),+ $(,)?) => ( . impl<'tcx> TyCtxt<'tcx> { 1,842,159 ( 0.11%) $(pub fn $method(self, v: &[$ty]) -> &'tcx List<$ty> { . self.interners.$field.intern_ref(v, || { . Interned(List::from_arena(&*self.arena, v)) . }).0 1,633,644 ( 0.10%) })+ . } . ); . } . . slice_interners!( . type_list: _intern_type_list(Ty<'tcx>), . substs: _intern_substs(GenericArg<'tcx>), . canonical_var_infos: _intern_canonical_var_infos(CanonicalVarInfo<'tcx>), -- line 2117 ---------------------------------------- -- line 2170 ---------------------------------------- . . /// Given a closure signature, returns an equivalent fn signature. Detuples . /// and so forth -- so e.g., if we have a sig with `Fn<(u32, i32)>` then . /// you would get a `fn(u32, i32)`. . /// `unsafety` determines the unsafety of the fn signature. If you pass . /// `hir::Unsafety::Unsafe` in the previous example, then you would get . /// an `unsafe fn (u32, i32)`. . /// It cannot convert a closure that requires unsafe. 10 ( 0.00%) pub fn signature_unclosure( . self, . sig: PolyFnSig<'tcx>, . unsafety: hir::Unsafety, . ) -> PolyFnSig<'tcx> { 16 ( 0.00%) sig.map_bound(|s| { 10 ( 0.00%) let params_iter = match s.inputs()[0].kind() { . ty::Tuple(params) => params.into_iter().map(|k| k.expect_ty()), . _ => bug!(), . }; 14 ( 0.00%) self.mk_fn_sig(params_iter, s.output(), s.c_variadic, unsafety, abi::Abi::Rust) . }) 8 ( 0.00%) } . . /// Same a `self.mk_region(kind)`, but avoids accessing the interners if . /// `*r == kind`. . #[inline] . pub fn reuse_or_mk_region(self, r: Region<'tcx>, kind: RegionKind) -> Region<'tcx> { 28,640 ( 0.00%) if *r == kind { r } else { self.mk_region(kind) } . } . . #[allow(rustc::usage_of_ty_tykind)] . #[inline] . pub fn mk_ty(self, st: TyKind<'tcx>) -> Ty<'tcx> { 781,703 ( 0.05%) self.interners.intern_ty(st) . } . . #[inline] . pub fn mk_predicate(self, binder: Binder<'tcx, PredicateKind<'tcx>>) -> Predicate<'tcx> { 665,989 ( 0.04%) let inner = self.interners.intern_predicate(binder); . Predicate { inner } . } . . #[inline] 161,832 ( 0.01%) pub fn reuse_or_mk_predicate( . self, . pred: Predicate<'tcx>, . binder: Binder<'tcx, PredicateKind<'tcx>>, . ) -> Predicate<'tcx> { 9,473 ( 0.00%) if pred.kind() != binder { self.mk_predicate(binder) } else { pred } 161,832 ( 0.01%) } . . pub fn mk_mach_int(self, tm: IntTy) -> Ty<'tcx> { 12 ( 0.00%) match tm { . IntTy::Isize => self.types.isize, . IntTy::I8 => self.types.i8, . IntTy::I16 => self.types.i16, . IntTy::I32 => self.types.i32, . IntTy::I64 => self.types.i64, . IntTy::I128 => self.types.i128, . } 12 ( 0.00%) } . . pub fn mk_mach_uint(self, tm: UintTy) -> Ty<'tcx> { 314 ( 0.00%) match tm { . UintTy::Usize => self.types.usize, . UintTy::U8 => self.types.u8, . UintTy::U16 => self.types.u16, . UintTy::U32 => self.types.u32, . UintTy::U64 => self.types.u64, . UintTy::U128 => self.types.u128, . } 314 ( 0.00%) } . . pub fn mk_mach_float(self, tm: FloatTy) -> Ty<'tcx> { . match tm { . FloatTy::F32 => self.types.f32, . FloatTy::F64 => self.types.f64, . } . } . . #[inline] . pub fn mk_static_str(self) -> Ty<'tcx> { 200 ( 0.00%) self.mk_imm_ref(self.lifetimes.re_static, self.types.str_) . } . . #[inline] . pub fn mk_adt(self, def: &'tcx AdtDef, substs: SubstsRef<'tcx>) -> Ty<'tcx> { . // Take a copy of substs so that we own the vectors inside. . self.mk_ty(Adt(def, substs)) . } . -- line 2259 ---------------------------------------- -- line 2329 ---------------------------------------- . } . . #[inline] . pub fn mk_imm_ptr(self, ty: Ty<'tcx>) -> Ty<'tcx> { . self.mk_ptr(TypeAndMut { ty, mutbl: hir::Mutability::Not }) . } . . #[inline] 306 ( 0.00%) pub fn mk_array(self, ty: Ty<'tcx>, n: u64) -> Ty<'tcx> { . self.mk_ty(Array(ty, ty::Const::from_usize(self, n))) 320 ( 0.00%) } . . #[inline] . pub fn mk_slice(self, ty: Ty<'tcx>) -> Ty<'tcx> { . self.mk_ty(Slice(ty)) . } . . #[inline] . pub fn intern_tup(self, ts: &[Ty<'tcx>]) -> Ty<'tcx> { 352 ( 0.00%) let kinds: Vec<_> = ts.iter().map(|&t| GenericArg::from(t)).collect(); 881 ( 0.00%) self.mk_ty(Tuple(self.intern_substs(&kinds))) . } . . pub fn mk_tup], Ty<'tcx>>>(self, iter: I) -> I::Output { 8,470 ( 0.00%) iter.intern_with(|ts| { 55,642 ( 0.00%) let kinds: Vec<_> = ts.iter().map(|&t| GenericArg::from(t)).collect(); 78,248 ( 0.00%) self.mk_ty(Tuple(self.intern_substs(&kinds))) 7,623 ( 0.00%) }) . } . . #[inline] . pub fn mk_unit(self) -> Ty<'tcx> { 233 ( 0.00%) self.types.unit . } . . #[inline] . pub fn mk_diverging_default(self) -> Ty<'tcx> { 8 ( 0.00%) if self.features().never_type_fallback { self.types.never } else { self.types.unit } . } . . #[inline] . pub fn mk_fn_def(self, def_id: DefId, substs: SubstsRef<'tcx>) -> Ty<'tcx> { . self.mk_ty(FnDef(def_id, substs)) . } . . #[inline] . pub fn mk_fn_ptr(self, fty: PolyFnSig<'tcx>) -> Ty<'tcx> { 780 ( 0.00%) self.mk_ty(FnPtr(fty)) . } . . #[inline] . pub fn mk_dynamic( . self, . obj: &'tcx List>>, . reg: ty::Region<'tcx>, . ) -> Ty<'tcx> { -- line 2384 ---------------------------------------- -- line 2412 ---------------------------------------- . . #[inline] . pub fn mk_ty_var(self, v: TyVid) -> Ty<'tcx> { . self.mk_ty_infer(TyVar(v)) . } . . #[inline] . pub fn mk_const_var(self, v: ConstVid<'tcx>, ty: Ty<'tcx>) -> &'tcx Const<'tcx> { 438 ( 0.00%) self.mk_const(ty::Const { val: ty::ConstKind::Infer(InferConst::Var(v)), ty }) . } . . #[inline] . pub fn mk_int_var(self, v: IntVid) -> Ty<'tcx> { . self.mk_ty_infer(IntVar(v)) . } . . #[inline] -- line 2428 ---------------------------------------- -- line 2445 ---------------------------------------- . self.mk_ty(Param(ParamTy { index, name })) . } . . #[inline] . pub fn mk_const_param(self, index: u32, name: Symbol, ty: Ty<'tcx>) -> &'tcx Const<'tcx> { . self.mk_const(ty::Const { val: ty::ConstKind::Param(ParamConst { index, name }), ty }) . } . 2,177 ( 0.00%) pub fn mk_param_from_def(self, param: &ty::GenericParamDef) -> GenericArg<'tcx> { 1,069 ( 0.00%) match param.kind { . GenericParamDefKind::Lifetime => { 1,458 ( 0.00%) self.mk_region(ty::ReEarlyBound(param.to_early_bound_region_data())).into() . } 136 ( 0.00%) GenericParamDefKind::Type { .. } => self.mk_ty_param(param.index, param.name).into(), . GenericParamDefKind::Const { .. } => { . self.mk_const_param(param.index, param.name, self.type_of(param.def_id)).into() . } . } 2,177 ( 0.00%) } . . #[inline] . pub fn mk_opaque(self, def_id: DefId, substs: SubstsRef<'tcx>) -> Ty<'tcx> { . self.mk_ty(Opaque(def_id, substs)) . } . 16,251 ( 0.00%) pub fn mk_place_field(self, place: Place<'tcx>, f: Field, ty: Ty<'tcx>) -> Place<'tcx> { 16,251 ( 0.00%) self.mk_place_elem(place, PlaceElem::Field(f, ty)) 32,502 ( 0.00%) } . . pub fn mk_place_deref(self, place: Place<'tcx>) -> Place<'tcx> { . self.mk_place_elem(place, PlaceElem::Deref) . } . 4,840 ( 0.00%) pub fn mk_place_downcast( . self, . place: Place<'tcx>, . adt_def: &'tcx AdtDef, . variant_index: VariantIdx, . ) -> Place<'tcx> { 4,840 ( 0.00%) self.mk_place_elem( . place, 9,680 ( 0.00%) PlaceElem::Downcast(Some(adt_def.variants[variant_index].name), variant_index), . ) 9,680 ( 0.00%) } . . pub fn mk_place_downcast_unnamed( . self, . place: Place<'tcx>, . variant_index: VariantIdx, . ) -> Place<'tcx> { . self.mk_place_elem(place, PlaceElem::Downcast(None, variant_index)) . } -- line 2496 ---------------------------------------- -- line 2497 ---------------------------------------- . . pub fn mk_place_index(self, place: Place<'tcx>, index: Local) -> Place<'tcx> { . self.mk_place_elem(place, PlaceElem::Index(index)) . } . . /// This method copies `Place`'s projection, add an element and reintern it. Should not be used . /// to build a full `Place` it's just a convenient way to grab a projection and modify it in . /// flight. 189,819 ( 0.01%) pub fn mk_place_elem(self, place: Place<'tcx>, elem: PlaceElem<'tcx>) -> Place<'tcx> { . let mut projection = place.projection.to_vec(); . projection.push(elem); . . Place { local: place.local, projection: self.intern_place_elems(&projection) } 210,910 ( 0.01%) } . 770 ( 0.00%) pub fn intern_poly_existential_predicates( . self, . eps: &[ty::Binder<'tcx, ExistentialPredicate<'tcx>>], . ) -> &'tcx List>> { 110 ( 0.00%) assert!(!eps.is_empty()); . assert!( . eps.array_windows() 30 ( 0.00%) .all(|[a, b]| a.skip_binder().stable_cmp(self, &b.skip_binder()) . != Ordering::Greater) . ); 440 ( 0.00%) self._intern_poly_existential_predicates(eps) 880 ( 0.00%) } . . pub fn intern_predicates(self, preds: &[Predicate<'tcx>]) -> &'tcx List> { . // FIXME consider asking the input slice to be sorted to avoid . // re-interning permutations, in which case that would be asserted . // here. 2,465 ( 0.00%) if preds.is_empty() { . // The macro-generated method below asserts we don't intern an empty slice. . List::empty() . } else { 181 ( 0.00%) self._intern_predicates(preds) . } 4,568 ( 0.00%) } . . pub fn intern_type_list(self, ts: &[Ty<'tcx>]) -> &'tcx List> { 12,790 ( 0.00%) if ts.is_empty() { List::empty() } else { self._intern_type_list(ts) } 116 ( 0.00%) } . . pub fn intern_substs(self, ts: &[GenericArg<'tcx>]) -> &'tcx List> { 285,861 ( 0.02%) if ts.is_empty() { List::empty() } else { self._intern_substs(ts) } 28,944 ( 0.00%) } . . pub fn intern_projs(self, ps: &[ProjectionKind]) -> &'tcx List { . if ps.is_empty() { List::empty() } else { self._intern_projs(ps) } . } . . pub fn intern_place_elems(self, ts: &[PlaceElem<'tcx>]) -> &'tcx List> { 46,149 ( 0.00%) if ts.is_empty() { List::empty() } else { self._intern_place_elems(ts) } 2,178 ( 0.00%) } . . pub fn intern_canonical_var_infos( . self, . ts: &[CanonicalVarInfo<'tcx>], . ) -> CanonicalVarInfos<'tcx> { 8,764 ( 0.00%) if ts.is_empty() { List::empty() } else { self._intern_canonical_var_infos(ts) } 92 ( 0.00%) } . . pub fn intern_bound_variable_kinds( . self, . ts: &[ty::BoundVariableKind], . ) -> &'tcx List { 1,678 ( 0.00%) if ts.is_empty() { List::empty() } else { self._intern_bound_variable_kinds(ts) } 1,974 ( 0.00%) } . . pub fn mk_fn_sig( . self, . inputs: I, . output: I::Item, . c_variadic: bool, . unsafety: hir::Unsafety, . abi: abi::Abi, . ) -> , ty::FnSig<'tcx>>>::Output . where . I: Iterator, ty::FnSig<'tcx>>>, . { . inputs.chain(iter::once(output)).intern_with(|xs| ty::FnSig { 1,560 ( 0.00%) inputs_and_output: self.intern_type_list(xs), 265 ( 0.00%) c_variadic, 399 ( 0.00%) unsafety, 264 ( 0.00%) abi, 210 ( 0.00%) }) . } . . pub fn mk_poly_existential_predicates< . I: InternAs< . [ty::Binder<'tcx, ExistentialPredicate<'tcx>>], . &'tcx List>>, . >, . >( . self, . iter: I, . ) -> I::Output { 431 ( 0.00%) iter.intern_with(|xs| self.intern_poly_existential_predicates(xs)) . } . . pub fn mk_predicates], &'tcx List>>>( . self, . iter: I, . ) -> I::Output { . iter.intern_with(|xs| self.intern_predicates(xs)) . } . . pub fn mk_type_list], &'tcx List>>>(self, iter: I) -> I::Output { 2,136 ( 0.00%) iter.intern_with(|xs| self.intern_type_list(xs)) . } . . pub fn mk_substs], &'tcx List>>>( . self, . iter: I, . ) -> I::Output { 163,358 ( 0.01%) iter.intern_with(|xs| self.intern_substs(xs)) . } . . pub fn mk_place_elems], &'tcx List>>>( . self, . iter: I, . ) -> I::Output { . iter.intern_with(|xs| self.intern_place_elems(xs)) . } . 40,557 ( 0.00%) pub fn mk_substs_trait(self, self_ty: Ty<'tcx>, rest: &[GenericArg<'tcx>]) -> SubstsRef<'tcx> { . self.mk_substs(iter::once(self_ty.into()).chain(rest.iter().cloned())) 81,114 ( 0.00%) } . . pub fn mk_bound_variable_kinds< . I: InternAs<[ty::BoundVariableKind], &'tcx List>, . >( . self, . iter: I, . ) -> I::Output { 7,819 ( 0.00%) iter.intern_with(|xs| self.intern_bound_variable_kinds(xs)) . } . . /// Walks upwards from `id` to find a node which might change lint levels with attributes. . /// It stops at `bound` and just returns it if reached. 377,048 ( 0.02%) pub fn maybe_lint_level_root_bounded(self, mut id: HirId, bound: HirId) -> HirId { 377,048 ( 0.02%) let hir = self.hir(); . loop { 548,295 ( 0.03%) if id == bound { . return bound; . } . 644,633 ( 0.04%) if hir.attrs(id).iter().any(|attr| Level::from_symbol(attr.name_or_empty()).is_some()) { . return id; . } . let next = hir.get_parent_node(id); 386,703 ( 0.02%) if next == id { . bug!("lint traversal reached the root of the crate"); . } . id = next; . } 538,640 ( 0.03%) } . 3,336 ( 0.00%) pub fn lint_level_at_node( . self, . lint: &'static Lint, . mut id: hir::HirId, . ) -> (Level, LintLevelSource) { . let sets = self.lint_levels(()); . loop { 17,097 ( 0.00%) if let Some(pair) = sets.level_and_source(lint, id, self.sess) { . return pair; . } 1,251 ( 0.00%) let next = self.hir().get_parent_node(id); 3,753 ( 0.00%) if next == id { . bug!("lint traversal reached the root of the crate"); . } . id = next; . } 3,336 ( 0.00%) } . 280 ( 0.00%) pub fn struct_span_lint_hir( . self, . lint: &'static Lint, . hir_id: HirId, . span: impl Into, . decorate: impl for<'a> FnOnce(LintDiagnosticBuilder<'a>), . ) { 578 ( 0.00%) let (level, src) = self.lint_level_at_node(lint, hir_id); 243 ( 0.00%) struct_lint_level(self.sess, lint, level, src, Some(span.into()), decorate); 160 ( 0.00%) } . . pub fn struct_lint_node( . self, . lint: &'static Lint, . id: HirId, . decorate: impl for<'a> FnOnce(LintDiagnosticBuilder<'a>), . ) { . let (level, src) = self.lint_level_at_node(lint, id); . struct_lint_level(self.sess, lint, level, src, None, decorate); . } . 2,289 ( 0.00%) pub fn in_scope_traits(self, id: HirId) -> Option<&'tcx [TraitCandidate]> { 654 ( 0.00%) let map = self.in_scope_traits_map(id.owner)?; . let candidates = map.get(&id.local_id)?; 654 ( 0.00%) Some(&*candidates) 2,616 ( 0.00%) } . 6,587 ( 0.00%) pub fn named_region(self, id: HirId) -> Option { . debug!(?id, "named_region"); . self.named_region_map(id.owner).and_then(|map| map.get(&id.local_id).cloned()) 8,469 ( 0.00%) } . 1,215 ( 0.00%) pub fn is_late_bound(self, id: HirId) -> bool { . self.is_late_bound_map(id.owner) 96 ( 0.00%) .map_or(false, |(owner, set)| owner == id.owner && set.contains(&id.local_id)) 1,080 ( 0.00%) } . 5,439 ( 0.00%) pub fn object_lifetime_defaults(self, id: HirId) -> Option> { . self.object_lifetime_defaults_map(id.owner) 6,993 ( 0.00%) } . 2,592 ( 0.00%) pub fn late_bound_vars(self, id: HirId) -> &'tcx List { . self.mk_bound_variable_kinds( . self.late_bound_vars_map(id.owner) . .and_then(|map| map.get(&id.local_id).cloned()) . .unwrap_or_else(|| { . bug!("No bound vars found for {:?} ({:?})", self.hir().node_to_string(id), id) . }) . .iter(), . ) 2,592 ( 0.00%) } . . pub fn lifetime_scope(self, id: HirId) -> Option { . self.lifetime_scope_map(id.owner).and_then(|mut map| map.remove(&id.local_id)) . } . . /// Whether the `def_id` counts as const fn in the current crate, considering all active . /// feature gates 150 ( 0.00%) pub fn is_const_fn(self, def_id: DefId) -> bool { 15 ( 0.00%) if self.is_const_fn_raw(def_id) { 2 ( 0.00%) match self.lookup_const_stability(def_id) { 4 ( 0.00%) Some(stability) if stability.level.is_unstable() => { . // has a `rustc_const_unstable` attribute, check whether the user enabled the . // corresponding feature gate. 2 ( 0.00%) self.features() . .declared_lib_features . .iter() . .any(|&(sym, _)| sym == stability.feature) . } . // functions without const stability are either stable user written . // const fn or the user is using feature gates and we thus don't . // care what they do . _ => true, . } . } else { . false . } 135 ( 0.00%) } . } . . impl<'tcx> TyCtxtAt<'tcx> { . /// Constructs a `TyKind::Error` type and registers a `delay_span_bug` to ensure it gets used. . #[track_caller] . pub fn ty_error(self) -> Ty<'tcx> { . self.tcx.ty_error_with_message(self.span, "TyKind::Error constructed but no error reported") . } -- line 2759 ---------------------------------------- -- line 2774 ---------------------------------------- . } . . impl InternAs<[T], R> for I . where . E: InternIteratorElement, . I: Iterator, . { . type Output = E::Output; 23,352 ( 0.00%) fn intern_with(self, f: F) -> Self::Output . where . F: FnOnce(&[T]) -> R, . { 702,905 ( 0.04%) E::intern_with(self, f) 24,462 ( 0.00%) } . } . . pub trait InternIteratorElement: Sized { . type Output; . fn intern_with, F: FnOnce(&[T]) -> R>(iter: I, f: F) -> Self::Output; . } . . impl InternIteratorElement for T { . type Output = R; 296,808 ( 0.02%) fn intern_with, F: FnOnce(&[T]) -> R>( . mut iter: I, . f: F, . ) -> Self::Output { . // This code is hot enough that it's worth specializing for the most . // common length lists, to avoid the overhead of `SmallVec` creation. . // Lengths 0, 1, and 2 typically account for ~95% of cases. If . // `size_hint` is incorrect a panic will occur via an `unwrap` or an . // `assert`. 339,618 ( 0.02%) match iter.size_hint() { . (0, Some(0)) => { 3 ( 0.00%) assert!(iter.next().is_none()); . f(&[]) . } . (1, Some(1)) => { . let t0 = iter.next().unwrap(); . assert!(iter.next().is_none()); 25,448 ( 0.00%) f(&[t0]) . } . (2, Some(2)) => { . let t0 = iter.next().unwrap(); . let t1 = iter.next().unwrap(); 158 ( 0.00%) assert!(iter.next().is_none()); 41,039 ( 0.00%) f(&[t0, t1]) . } 432 ( 0.00%) _ => f(&iter.collect::>()), . } 333,750 ( 0.02%) } . } . . impl<'a, T, R> InternIteratorElement for &'a T . where . T: Clone + 'a, . { . type Output = R; 1,840 ( 0.00%) fn intern_with, F: FnOnce(&[T]) -> R>(iter: I, f: F) -> Self::Output { . // This code isn't hot. 84 ( 0.00%) f(&iter.cloned().collect::>()) 1,548 ( 0.00%) } . } . . impl InternIteratorElement for Result { . type Output = Result; 121,005 ( 0.01%) fn intern_with, F: FnOnce(&[T]) -> R>( . mut iter: I, . f: F, . ) -> Self::Output { . // This code is hot enough that it's worth specializing for the most . // common length lists, to avoid the overhead of `SmallVec` creation. . // Lengths 0, 1, and 2 typically account for ~95% of cases. If . // `size_hint` is incorrect a panic will occur via an `unwrap` or an . // `assert`, unless a failure happens first, in which case the result . // will be an error anyway. 83,772 ( 0.00%) Ok(match iter.size_hint() { . (0, Some(0)) => { . assert!(iter.next().is_none()); . f(&[]) . } . (1, Some(1)) => { 300 ( 0.00%) let t0 = iter.next().unwrap()?; . assert!(iter.next().is_none()); 6,278 ( 0.00%) f(&[t0]) . } . (2, Some(2)) => { 528 ( 0.00%) let t0 = iter.next().unwrap()?; 528 ( 0.00%) let t1 = iter.next().unwrap()?; 792 ( 0.00%) assert!(iter.next().is_none()); 5,554 ( 0.00%) f(&[t0, t1]) . } 2,658 ( 0.00%) _ => f(&iter.collect::, _>>()?), . }) 136,708 ( 0.01%) } . } . . // We are comparing types with different invariant lifetimes, so `ptr::eq` . // won't work for us. . fn ptr_eq(t: *const T, u: *const U) -> bool { 64,712 ( 0.00%) t as *const () == u as *const () . } . . pub fn provide(providers: &mut ty::query::Providers) { 2 ( 0.00%) providers.in_scope_traits_map = . |tcx, id| tcx.hir_crate(()).owners[id].as_ref().map(|owner_info| &owner_info.trait_map); 3 ( 0.00%) providers.resolutions = |tcx, ()| &tcx.untracked_resolutions; 2 ( 0.00%) providers.module_reexports = . |tcx, id| tcx.resolutions(()).reexport_map.get(&id).map(|v| &v[..]); 2 ( 0.00%) providers.crate_name = |tcx, id| { 1 ( 0.00%) assert_eq!(id, LOCAL_CRATE); 1 ( 0.00%) tcx.crate_name . }; 2 ( 0.00%) providers.maybe_unused_trait_import = . |tcx, id| tcx.resolutions(()).maybe_unused_trait_imports.contains(&id); 2 ( 0.00%) providers.maybe_unused_extern_crates = . |tcx, ()| &tcx.resolutions(()).maybe_unused_extern_crates[..]; 2 ( 0.00%) providers.names_imported_by_glob_use = |tcx, id| { . tcx.arena.alloc(tcx.resolutions(()).glob_map.get(&id).cloned().unwrap_or_default()) . }; . 11 ( 0.00%) providers.lookup_stability = |tcx, id| tcx.stability().local_stability(id.expect_local()); 2 ( 0.00%) providers.lookup_const_stability = . |tcx, id| tcx.stability().local_const_stability(id.expect_local()); 2 ( 0.00%) providers.lookup_deprecation_entry = 4,352 ( 0.00%) |tcx, id| tcx.stability().local_deprecation_entry(id.expect_local()); 2 ( 0.00%) providers.extern_mod_stmt_cnum = . |tcx, id| tcx.resolutions(()).extern_crate_map.get(&id).cloned(); 3 ( 0.00%) providers.output_filenames = |tcx, ()| tcx.output_filenames.clone(); 3 ( 0.00%) providers.features_query = |tcx, ()| tcx.sess.features_untracked(); 2 ( 0.00%) providers.is_panic_runtime = |tcx, cnum| { . assert_eq!(cnum, LOCAL_CRATE); . tcx.sess.contains_name(tcx.hir().krate_attrs(), sym::panic_runtime) . }; 2 ( 0.00%) providers.is_compiler_builtins = |tcx, cnum| { . assert_eq!(cnum, LOCAL_CRATE); . tcx.sess.contains_name(tcx.hir().krate_attrs(), sym::compiler_builtins) . }; 2 ( 0.00%) providers.has_panic_handler = |tcx, cnum| { 1 ( 0.00%) assert_eq!(cnum, LOCAL_CRATE); . // We want to check if the panic handler was defined in this crate 3 ( 0.00%) tcx.lang_items().panic_impl().map_or(false, |did| did.is_local()) . }; . } 1,091,050 ( 0.06%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/num/uint_macros.rs -------------------------------------------------------------------------------- Ir -- line 57 ---------------------------------------- . /// # Examples . /// . /// Basic usage: . /// . /// ``` . #[doc = concat!("assert_eq!(", stringify!($SelfT), "::from_str_radix(\"A\", 16), Ok(10));")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] 202 ( 0.00%) pub fn from_str_radix(src: &str, radix: u32) -> Result { 101 ( 0.00%) from_str_radix(src, radix) 303 ( 0.00%) } . . /// Returns the number of ones in the binary representation of `self`. . /// . /// # Examples . /// . /// Basic usage: . /// . /// ``` -- line 75 ---------------------------------------- -- line 80 ---------------------------------------- . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_math", since = "1.32.0")] . #[doc(alias = "popcount")] . #[doc(alias = "popcnt")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn count_ones(self) -> u32 { 38,355 ( 0.00%) intrinsics::ctpop(self as $ActualT) as u32 . } . . /// Returns the number of zeros in the binary representation of `self`. . /// . /// # Examples . /// . /// Basic usage: . /// -- line 96 ---------------------------------------- -- line 118 ---------------------------------------- . /// assert_eq!(n.leading_zeros(), 2); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn leading_zeros(self) -> u32 { 200,814 ( 0.01%) intrinsics::ctlz(self as $ActualT) as u32 . } . . /// Returns the number of trailing zeros in the binary representation . /// of `self`. . /// . /// # Examples . /// . /// Basic usage: -- line 134 ---------------------------------------- -- line 139 ---------------------------------------- . /// assert_eq!(n.trailing_zeros(), 3); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn trailing_zeros(self) -> u32 { 607,807 ( 0.04%) intrinsics::cttz(self) as u32 . } . . /// Returns the number of leading ones in the binary representation of `self`. . /// . /// # Examples . /// . /// Basic usage: . /// -- line 155 ---------------------------------------- -- line 204 ---------------------------------------- . #[doc = concat!("assert_eq!(n.rotate_left(", $rot, "), m);")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn rotate_left(self, n: u32) -> Self { 8,641,344 ( 0.50%) intrinsics::rotate_left(self, n as $SelfT) . } . . /// Shifts the bits to the right by a specified amount, `n`, . /// wrapping the truncated bits to the beginning of the resulting . /// integer. . /// . /// Please note this isn't the same operation as the `>>` shifting operator! . /// -- line 220 ---------------------------------------- -- line 430 ---------------------------------------- . #[doc = concat!("assert_eq!((", stringify!($SelfT), "::MAX - 2).checked_add(3), None);")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_checked_int_methods", since = "1.47.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline] . pub const fn checked_add(self, rhs: Self) -> Option { 2 ( 0.00%) let (a, b) = self.overflowing_add(rhs); . if unlikely!(b) {None} else {Some(a)} . } . . /// Unchecked integer addition. Computes `self + rhs`, assuming overflow . /// cannot occur. . /// . /// # Safety . /// -- line 446 ---------------------------------------- -- line 456 ---------------------------------------- . )] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[rustc_const_unstable(feature = "const_inherent_unchecked_arith", issue = "85122")] . #[inline(always)] . pub const unsafe fn unchecked_add(self, rhs: Self) -> Self { . // SAFETY: the caller must uphold the safety contract for . // `unchecked_add`. 645,996 ( 0.04%) unsafe { intrinsics::unchecked_add(self, rhs) } . } . . /// Checked addition with a signed integer. Computes `self + rhs`, . /// returning `None` if overflow occurred. . /// . /// # Examples . /// . /// Basic usage: -- line 472 ---------------------------------------- -- line 525 ---------------------------------------- . )] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[rustc_const_unstable(feature = "const_inherent_unchecked_arith", issue = "85122")] . #[inline(always)] . pub const unsafe fn unchecked_sub(self, rhs: Self) -> Self { . // SAFETY: the caller must uphold the safety contract for . // `unchecked_sub`. 59,417 ( 0.00%) unsafe { intrinsics::unchecked_sub(self, rhs) } . } . . /// Checked integer multiplication. Computes `self * rhs`, returning . /// `None` if overflow occurred. . /// . /// # Examples . /// . /// Basic usage: -- line 541 ---------------------------------------- -- line 1035 ---------------------------------------- . #[doc = concat!("assert_eq!(", stringify!($SelfT), "::MAX.saturating_add(127), ", stringify!($SelfT), "::MAX);")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[rustc_const_stable(feature = "const_saturating_int_methods", since = "1.47.0")] . #[inline(always)] . pub const fn saturating_add(self, rhs: Self) -> Self { 236,662 ( 0.01%) intrinsics::saturating_add(self, rhs) . } . . /// Saturating addition with a signed integer. Computes `self + rhs`, . /// saturating at the numeric bounds instead of overflowing. . /// . /// # Examples . /// . /// Basic usage: -- line 1051 ---------------------------------------- -- line 1084 ---------------------------------------- . #[doc = concat!("assert_eq!(13", stringify!($SelfT), ".saturating_sub(127), 0);")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[rustc_const_stable(feature = "const_saturating_int_methods", since = "1.47.0")] . #[inline(always)] . pub const fn saturating_sub(self, rhs: Self) -> Self { 463,812 ( 0.03%) intrinsics::saturating_sub(self, rhs) . } . . /// Saturating integer multiplication. Computes `self * rhs`, . /// saturating at the numeric bounds instead of overflowing. . /// . /// # Examples . /// . /// Basic usage: -- line 1100 ---------------------------------------- -- line 1175 ---------------------------------------- . #[doc = concat!("assert_eq!(200", stringify!($SelfT), ".wrapping_add(", stringify!($SelfT), "::MAX), 199);")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn wrapping_add(self, rhs: Self) -> Self { 5,501,998 ( 0.32%) intrinsics::wrapping_add(self, rhs) . } . . /// Wrapping (modular) addition with a signed integer. Computes . /// `self + rhs`, wrapping around at the boundary of the type. . /// . /// # Examples . /// . /// Basic usage: -- line 1191 ---------------------------------------- -- line 1217 ---------------------------------------- . #[doc = concat!("assert_eq!(100", stringify!($SelfT), ".wrapping_sub(", stringify!($SelfT), "::MAX), 101);")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn wrapping_sub(self, rhs: Self) -> Self { 2,226,007 ( 0.13%) intrinsics::wrapping_sub(self, rhs) . } . . /// Wrapping (modular) multiplication. Computes `self * . /// rhs`, wrapping around at the boundary of the type. . /// . /// # Examples . /// . /// Basic usage: -- line 1233 ---------------------------------------- -- line 1240 ---------------------------------------- . /// assert_eq!(25u8.wrapping_mul(12), 44); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn wrapping_mul(self, rhs: Self) -> Self { 6,140,614 ( 0.36%) intrinsics::wrapping_mul(self, rhs) . } . . /// Wrapping (modular) division. Computes `self / rhs`. . /// Wrapped division on unsigned types is just normal division. . /// There's no way wrapping could ever happen. . /// This function exists, so that all operations . /// are accounted for in the wrapping operations. . /// -- line 1256 ---------------------------------------- -- line 1492 ---------------------------------------- . #[doc = concat!("assert_eq!(", stringify!($SelfT), "::MAX.overflowing_add(1), (0, true));")] . /// ``` . #[stable(feature = "wrapping", since = "1.7.0")] . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn overflowing_add(self, rhs: Self) -> (Self, bool) { 2,281,620 ( 0.13%) let (a, b) = intrinsics::add_with_overflow(self as $ActualT, rhs as $ActualT); . (a as Self, b) . } . . /// Calculates `self + rhs + carry` without the ability to overflow. . /// . /// Performs "ternary addition" which takes in an extra bit to add, and may return an . /// additional bit of overflow. This allows for chaining together multiple additions . /// to create "big integers" which represent larger values. -- line 1508 ---------------------------------------- -- line 1588 ---------------------------------------- . #[doc = concat!("assert_eq!(0", stringify!($SelfT), ".overflowing_sub(1), (", stringify!($SelfT), "::MAX, true));")] . /// ``` . #[stable(feature = "wrapping", since = "1.7.0")] . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn overflowing_sub(self, rhs: Self) -> (Self, bool) { 228,835 ( 0.01%) let (a, b) = intrinsics::sub_with_overflow(self as $ActualT, rhs as $ActualT); . (a as Self, b) . } . . /// Calculates `self - rhs - borrow` without the ability to overflow. . /// . /// Performs "ternary subtraction" which takes in an extra bit to subtract, and may return . /// an additional bit of overflow. This allows for chaining together multiple subtractions . /// to create "big integers" which represent larger values. -- line 1604 ---------------------------------------- -- line 1674 ---------------------------------------- . /// assert_eq!(1_000_000_000u32.overflowing_mul(10), (1410065408, true)); . /// ``` . #[stable(feature = "wrapping", since = "1.7.0")] . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn overflowing_mul(self, rhs: Self) -> (Self, bool) { 1,100,037 ( 0.06%) let (a, b) = intrinsics::mul_with_overflow(self as $ActualT, rhs as $ActualT); . (a as Self, b) . } . . /// Calculates the divisor when `self` is divided by `rhs`. . /// . /// Returns a tuple of the divisor along with a boolean indicating . /// whether an arithmetic overflow would occur. Note that for unsigned . /// integers overflow never occurs, so the second value is always -- line 1690 ---------------------------------------- -- line 2132 ---------------------------------------- . #[doc = concat!("assert!(16", stringify!($SelfT), ".is_power_of_two());")] . #[doc = concat!("assert!(!10", stringify!($SelfT), ".is_power_of_two());")] . /// ``` . #[must_use] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_is_power_of_two", since = "1.32.0")] . #[inline(always)] . pub const fn is_power_of_two(self) -> bool { 60 ( 0.00%) self.count_ones() == 1 . } . . // Returns one less than next power of two. . // (For 8u8 next power of two is 8u8 and for 6u8 it is 8u8) . // . // 8u8.one_less_than_next_power_of_two() == 7 . // 6u8.one_less_than_next_power_of_two() == 7 . // . // This method cannot overflow, as in the `next_power_of_two` . // overflow cases it instead ends up returning the maximum value . // of the type, and can return 0 for 0. . #[inline] . #[rustc_const_stable(feature = "const_int_pow", since = "1.50.0")] . const fn one_less_than_next_power_of_two(self) -> Self { 15,660 ( 0.00%) if self <= 1 { return 0; } . 13,851 ( 0.00%) let p = self - 1; . // SAFETY: Because `p > 0`, it cannot consist entirely of leading zeros. . // That means the shift is always in-bounds, and some processors . // (such as intel pre-haswell) have more efficient ctlz . // intrinsics when the argument is non-zero. 41,522 ( 0.00%) let z = unsafe { intrinsics::ctlz_nonzero(p) }; 13,866 ( 0.00%) <$SelfT>::MAX >> z . } . . /// Returns the smallest power of two greater than or equal to `self`. . /// . /// When return value overflows (i.e., `self > (1 << (N-1))` for type . /// `uN`), it panics in debug mode and the return value is wrapped to 0 in . /// release mode (the only situation in which method can return 0). . /// -- line 2171 ---------------------------------------- -- line 2179 ---------------------------------------- . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_int_pow", since = "1.50.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline] . #[rustc_inherit_overflow_checks] . pub const fn next_power_of_two(self) -> Self { 12,034 ( 0.00%) self.one_less_than_next_power_of_two() + 1 . } . . /// Returns the smallest power of two greater than or equal to `n`. If . /// the next power of two is greater than the type's maximum value, . /// `None` is returned, otherwise the power of two is wrapped in `Some`. . /// . /// # Examples . /// -- line 2195 ---------------------------------------- 45,543 ( 0.00%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/util.rs -------------------------------------------------------------------------------- Ir -- line 41 ---------------------------------------- . write!(fmt, "{}", x) . } . _ => write!(fmt, "{}", self.val), . } . } . } . . fn int_size_and_signed<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>) -> (Size, bool) { 323,058 ( 0.02%) let (int, signed) = match *ty.kind() { 753,802 ( 0.04%) Int(ity) => (Integer::from_int_ty(&tcx, ity), true), . Uint(uty) => (Integer::from_uint_ty(&tcx, uty), false), . _ => bug!("non integer discriminant"), . }; . (int.size(), signed) . } . . impl<'tcx> Discr<'tcx> { . /// Adds `1` to the value and wraps around if the maximum for the type is reached. 513,075 ( 0.03%) pub fn wrap_incr(self, tcx: TyCtxt<'tcx>) -> Self { 719,646 ( 0.04%) self.checked_add(tcx, 1).0 205,230 ( 0.01%) } 969,174 ( 0.06%) pub fn checked_add(self, tcx: TyCtxt<'tcx>, n: u128) -> (Self, bool) { . let (size, signed) = int_size_and_signed(tcx, self.ty); . let (val, oflo) = if signed { . let min = size.signed_int_min(); . let max = size.signed_int_max(); . let val = size.sign_extend(self.val) as i128; 430,744 ( 0.03%) assert!(n < (i128::MAX as u128)); . let n = n as i128; 753,802 ( 0.04%) let oflo = val > max - n; 430,744 ( 0.03%) let val = if oflo { min + (n - (max - val) - 1) } else { val + n }; . // zero the upper bits . let val = val as u128; . let val = size.truncate(val); . (val, oflo) . } else { . let max = size.unsigned_int_max(); . let val = self.val; . let oflo = val > max - n; . let val = if oflo { n - (max - val) - 1 } else { val + n }; . (val, oflo) . }; 430,744 ( 0.03%) (Self { val, ty: self.ty }, oflo) 969,174 ( 0.06%) } . } . . pub trait IntTypeExt { . fn to_ty<'tcx>(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx>; . fn disr_incr<'tcx>(&self, tcx: TyCtxt<'tcx>, val: Option>) -> Option>; . fn initial_discriminant<'tcx>(&self, tcx: TyCtxt<'tcx>) -> Discr<'tcx>; . } . . impl IntTypeExt for attr::IntType { . fn to_ty<'tcx>(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> { 172,705 ( 0.01%) match *self { . SignedInt(ast::IntTy::I8) => tcx.types.i8, . SignedInt(ast::IntTy::I16) => tcx.types.i16, . SignedInt(ast::IntTy::I32) => tcx.types.i32, . SignedInt(ast::IntTy::I64) => tcx.types.i64, . SignedInt(ast::IntTy::I128) => tcx.types.i128, . SignedInt(ast::IntTy::Isize) => tcx.types.isize, . UnsignedInt(ast::UintTy::U8) => tcx.types.u8, . UnsignedInt(ast::UintTy::U16) => tcx.types.u16, . UnsignedInt(ast::UintTy::U32) => tcx.types.u32, . UnsignedInt(ast::UintTy::U64) => tcx.types.u64, . UnsignedInt(ast::UintTy::U128) => tcx.types.u128, . UnsignedInt(ast::UintTy::Usize) => tcx.types.usize, . } 14,827 ( 0.00%) } . . fn initial_discriminant<'tcx>(&self, tcx: TyCtxt<'tcx>) -> Discr<'tcx> { . Discr { val: 0, ty: self.to_ty(tcx) } 58,800 ( 0.00%) } . 192 ( 0.00%) fn disr_incr<'tcx>(&self, tcx: TyCtxt<'tcx>, val: Option>) -> Option> { 447 ( 0.00%) if let Some(val) = val { 170 ( 0.00%) assert_eq!(self.to_ty(tcx), val.ty); 765 ( 0.00%) let (new, oflo) = val.checked_add(tcx, 1); 85 ( 0.00%) if oflo { None } else { Some(new) } . } else { . Some(self.initial_discriminant(tcx)) . } 192 ( 0.00%) } . } . . impl<'tcx> TyCtxt<'tcx> { . /// Creates a hash of the type `Ty` which will be the same no matter what crate . /// context it's calculated within. This is used by the `type_id` intrinsic. . pub fn type_id_hash(self, ty: Ty<'tcx>) -> u64 { . let mut hasher = StableHasher::new(); . let mut hcx = self.create_stable_hashing_context(); -- line 131 ---------------------------------------- -- line 138 ---------------------------------------- . hcx.while_hashing_spans(false, |hcx| { . hcx.with_node_id_hashing_mode(NodeIdHashingMode::HashDefPath, |hcx| { . ty.hash_stable(hcx, &mut hasher); . }); . }); . hasher.finish() . } . 161 ( 0.00%) pub fn has_error_field(self, ty: Ty<'tcx>) -> bool { 92 ( 0.00%) if let ty::Adt(def, substs) = *ty.kind() { . for field in def.all_fields() { 102 ( 0.00%) let field_ty = field.ty(self, substs); 102 ( 0.00%) if let Error(_) = field_ty.kind() { . return true; . } . } . } . false 184 ( 0.00%) } . . /// Attempts to returns the deeply last field of nested structures, but . /// does not apply any normalization in its search. Returns the same type . /// if input `ty` is not a structure at all. 5,067 ( 0.00%) pub fn struct_tail_without_normalization(self, ty: Ty<'tcx>) -> Ty<'tcx> { . let tcx = self; . tcx.struct_tail_with_normalize(ty, |ty| ty) 4,504 ( 0.00%) } . . /// Returns the deeply last field of nested structures, or the same type if . /// not a structure at all. Corresponds to the only possible unsized field, . /// and its type can be used to determine unsizing strategy. . /// . /// Should only be called if `ty` has no inference variables and does not . /// need its lifetimes preserved (e.g. as part of codegen); otherwise . /// normalization attempt may cause compiler bugs. 264 ( 0.00%) pub fn struct_tail_erasing_lifetimes( . self, . ty: Ty<'tcx>, . param_env: ty::ParamEnv<'tcx>, . ) -> Ty<'tcx> { . let tcx = self; . tcx.struct_tail_with_normalize(ty, |ty| tcx.normalize_erasing_regions(param_env, ty)) 216 ( 0.00%) } . . /// Returns the deeply last field of nested structures, or the same type if . /// not a structure at all. Corresponds to the only possible unsized field, . /// and its type can be used to determine unsizing strategy. . /// . /// This is parameterized over the normalization strategy (i.e. how to . /// handle `::Assoc` and `impl Trait`); pass the identity . /// function to indicate no normalization should take place. -- line 188 ---------------------------------------- -- line 189 ---------------------------------------- . /// . /// See also `struct_tail_erasing_lifetimes`, which is suitable for use . /// during codegen. . pub fn struct_tail_with_normalize( . self, . mut ty: Ty<'tcx>, . mut normalize: impl FnMut(Ty<'tcx>) -> Ty<'tcx>, . ) -> Ty<'tcx> { 2,935 ( 0.00%) let recursion_limit = self.recursion_limit(); . for iteration in 0.. { 589 ( 0.00%) if !recursion_limit.value_within_limit(iteration) { . return self.ty_error_with_message( . DUMMY_SP, . &format!("reached the recursion limit finding the struct tail for {}", ty), . ); . } 2,901 ( 0.00%) match *ty.kind() { 58 ( 0.00%) ty::Adt(def, substs) => { 116 ( 0.00%) if !def.is_struct() { . break; . } 2 ( 0.00%) match def.non_enum_variant().fields.last() { 6 ( 0.00%) Some(f) => ty = f.ty(self, substs), . None => break, . } . } . . ty::Tuple(tys) if let Some((&last_ty, _)) = tys.split_last() => { . ty = last_ty.expect_ty(); . } . -- line 219 ---------------------------------------- -- line 240 ---------------------------------------- . /// keeps going as long as the two types are instances of the same . /// structure definitions. . /// For `(Foo>, Foo)`, the result will be `(Foo, Trait)`, . /// whereas struct_tail produces `T`, and `Trait`, respectively. . /// . /// Should only be called if the types have no inference variables and do . /// not need their lifetimes preserved (e.g., as part of codegen); otherwise, . /// normalization attempt may cause compiler bugs. 90 ( 0.00%) pub fn struct_lockstep_tails_erasing_lifetimes( . self, . source: Ty<'tcx>, . target: Ty<'tcx>, . param_env: ty::ParamEnv<'tcx>, . ) -> (Ty<'tcx>, Ty<'tcx>) { . let tcx = self; . tcx.struct_lockstep_tails_with_normalize(source, target, |ty| { . tcx.normalize_erasing_regions(param_env, ty) . }) 60 ( 0.00%) } . . /// Same as applying `struct_tail` on `source` and `target`, but only . /// keeps going as long as the two types are instances of the same . /// structure definitions. . /// For `(Foo>, Foo)`, the result will be `(Foo, Trait)`, . /// whereas struct_tail produces `T`, and `Trait`, respectively. . /// . /// See also `struct_lockstep_tails_erasing_lifetimes`, which is suitable for use -- line 266 ---------------------------------------- -- line 268 ---------------------------------------- . pub fn struct_lockstep_tails_with_normalize( . self, . source: Ty<'tcx>, . target: Ty<'tcx>, . normalize: impl Fn(Ty<'tcx>) -> Ty<'tcx>, . ) -> (Ty<'tcx>, Ty<'tcx>) { . let (mut a, mut b) = (source, target); . loop { 72 ( 0.00%) match (&a.kind(), &b.kind()) { . (&Adt(a_def, a_substs), &Adt(b_def, b_substs)) . if a_def == b_def && a_def.is_struct() => . { . if let Some(f) = a_def.non_enum_variant().fields.last() { . a = f.ty(self, a_substs); . b = f.ty(self, b_substs); . } else { . break; -- line 284 ---------------------------------------- -- line 310 ---------------------------------------- . . _ => break, . } . } . (a, b) . } . . /// Calculate the destructor of a given type. 528 ( 0.00%) pub fn calculate_dtor( . self, . adt_did: DefId, . validate: impl Fn(Self, DefId) -> Result<(), ErrorReported>, . ) -> Option { 220 ( 0.00%) let drop_trait = self.lang_items().drop_trait()?; . self.ensure().coherent_trait(drop_trait); . 44 ( 0.00%) let ty = self.type_of(adt_did); 396 ( 0.00%) let (did, constness) = self.find_map_relevant_impl(drop_trait, ty, |impl_did| { . if let Some(item_id) = self.associated_item_def_ids(impl_did).first() { . if validate(self, impl_did).is_ok() { . return Some((*item_id, self.impl_constness(impl_did))); . } . } . None . })?; . . Some(ty::Destructor { did, constness }) 440 ( 0.00%) } . . /// Returns the set of types that are required to be alive in . /// order to run the destructor of `def` (see RFCs 769 and . /// 1238). . /// . /// Note that this returns only the constraints for the . /// destructor of `def` itself. For the destructors of the . /// contents, you need `adt_dtorck_constraint`. 484 ( 0.00%) pub fn destructor_constraints(self, def: &'tcx ty::AdtDef) -> Vec> { 220 ( 0.00%) let dtor = match def.destructor(self) { . None => { . debug!("destructor_constraints({:?}) - no dtor", def.did); . return vec![]; . } . Some(dtor) => dtor.did, . }; . . let impl_def_id = self.associated_item(dtor).container.id(); -- line 355 ---------------------------------------- -- line 406 ---------------------------------------- . false . } . } . }) . .map(|(item_param, _)| item_param) . .collect(); . debug!("destructor_constraint({:?}) = {:?}", def.did, result); . result 440 ( 0.00%) } . . /// Returns `true` if `def_id` refers to a closure (e.g., `|x| x * 2`). Note . /// that closures have a `DefId`, but the closure *expression* also . /// has a `HirId` that is located within the context where the . /// closure appears (and, sadly, a corresponding `NodeId`, since . /// those are not yet phased out). The parent of the closure's . /// `DefId` will also be the context where it appears. 556 ( 0.00%) pub fn is_closure(self, def_id: DefId) -> bool { 2,780 ( 0.00%) matches!(self.def_kind(def_id), DefKind::Closure | DefKind::Generator) 1,112 ( 0.00%) } . . /// Returns `true` if `def_id` refers to a definition that does not have its own . /// type-checking context, i.e. closure, generator or inline const. 352 ( 0.00%) pub fn is_typeck_child(self, def_id: DefId) -> bool { 6,104 ( 0.00%) matches!( 6,928 ( 0.00%) self.def_kind(def_id), . DefKind::Closure | DefKind::Generator | DefKind::InlineConst . ) 704 ( 0.00%) } . . /// Returns `true` if `def_id` refers to a trait (i.e., `trait Foo { ... }`). 823 ( 0.00%) pub fn is_trait(self, def_id: DefId) -> bool { 823 ( 0.00%) self.def_kind(def_id) == DefKind::Trait 1,646 ( 0.00%) } . . /// Returns `true` if `def_id` refers to a trait alias (i.e., `trait Foo = ...;`), . /// and `false` otherwise. 1,044 ( 0.00%) pub fn is_trait_alias(self, def_id: DefId) -> bool { 1,044 ( 0.00%) self.def_kind(def_id) == DefKind::TraitAlias 2,088 ( 0.00%) } . . /// Returns `true` if this `DefId` refers to the implicit constructor for . /// a tuple struct like `struct Foo(u32)`, and `false` otherwise. 28 ( 0.00%) pub fn is_constructor(self, def_id: DefId) -> bool { 2,964 ( 0.00%) matches!(self.def_kind(def_id), DefKind::Ctor(..)) 56 ( 0.00%) } . . /// Given the `DefId`, returns the `DefId` of the innermost item that . /// has its own type-checking context or "inference enviornment". . /// . /// For example, a closure has its own `DefId`, but it is type-checked . /// with the containing item. Similarly, an inline const block has its . /// own `DefId` but it is type-checked together with the containing item. . /// . /// Therefore, when we fetch the . /// `typeck` the closure, for example, we really wind up . /// fetching the `typeck` the enclosing fn item. 14,410 ( 0.00%) pub fn typeck_root_def_id(self, def_id: DefId) -> DefId { . let mut def_id = def_id; . while self.is_typeck_child(def_id) { . def_id = self.parent(def_id).unwrap_or_else(|| { . bug!("closure {:?} has no parent", def_id); . }); . } . def_id 11,528 ( 0.00%) } . . /// Given the `DefId` and substs a closure, creates the type of . /// `self` argument that the closure expects. For example, for a . /// `Fn` closure, this would return a reference type `&T` where . /// `T = closure_ty`. . /// . /// Returns `None` if this closure's kind has not yet been inferred. . /// This should only be possible during type checking. . /// . /// Note that the return value is a late-bound region and hence . /// wrapped in a binder. 396 ( 0.00%) pub fn closure_env_ty( . self, . closure_def_id: DefId, . closure_substs: SubstsRef<'tcx>, . env_region: ty::RegionKind, . ) -> Option> { . let closure_ty = self.mk_closure(closure_def_id, closure_substs); . let closure_kind_ty = closure_substs.as_closure().kind_ty(); 132 ( 0.00%) let closure_kind = closure_kind_ty.to_opt_closure_kind()?; 172 ( 0.00%) let env_ty = match closure_kind { 14 ( 0.00%) ty::ClosureKind::Fn => self.mk_imm_ref(self.mk_region(env_region), closure_ty), 140 ( 0.00%) ty::ClosureKind::FnMut => self.mk_mut_ref(self.mk_region(env_region), closure_ty), . ty::ClosureKind::FnOnce => closure_ty, . }; . Some(env_ty) 352 ( 0.00%) } . . /// Returns `true` if the node pointed to by `def_id` is a `static` item. 308 ( 0.00%) pub fn is_static(self, def_id: DefId) -> bool { . self.static_mutability(def_id).is_some() 352 ( 0.00%) } . . /// Returns `true` if this is a `static` item with the `#[thread_local]` attribute. . pub fn is_thread_local_static(self, def_id: DefId) -> bool { . self.codegen_fn_attrs(def_id).flags.contains(CodegenFnAttrFlags::THREAD_LOCAL) . } . . /// Returns `true` if the node pointed to by `def_id` is a mutable `static` item. . pub fn is_mutable_static(self, def_id: DefId) -> bool { -- line 510 ---------------------------------------- -- line 597 ---------------------------------------- . self.found_recursion = def_id == *self.primary_def_id.as_ref().unwrap(); . None . } . } . } . . impl<'tcx> TypeFolder<'tcx> for OpaqueTypeExpander<'tcx> { . fn tcx(&self) -> TyCtxt<'tcx> { 3 ( 0.00%) self.tcx . } . . fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> { 6 ( 0.00%) if let ty::Opaque(def_id, substs) = t.kind { . self.expand_opaque_ty(def_id, substs).unwrap_or(t) 3 ( 0.00%) } else if t.has_opaque_types() { . t.super_fold_with(self) . } else { . t . } . } . } . . impl<'tcx> ty::TyS<'tcx> { -- line 619 ---------------------------------------- -- line 658 ---------------------------------------- . . /// Checks whether values of this type `T` are *moved* or *copied* . /// when referenced -- this amounts to a check for whether `T: . /// Copy`, but note that we **don't** consider lifetimes when . /// doing this check. This means that we may generate MIR which . /// does copies even when the type actually doesn't satisfy the . /// full requirements for the `Copy` trait (cc #29149) -- this . /// winds up being reported as an error during NLL borrow check. 3,870 ( 0.00%) pub fn is_copy_modulo_regions( . &'tcx self, . tcx_at: TyCtxtAt<'tcx>, . param_env: ty::ParamEnv<'tcx>, . ) -> bool { . tcx_at.is_copy_raw(param_env.and(self)) 3,096 ( 0.00%) } . . /// Checks whether values of this type `T` have a size known at . /// compile time (i.e., whether `T: Sized`). Lifetimes are ignored . /// for the purposes of this check, so it can be an . /// over-approximation in generic contexts, where one can have . /// strange rules like `>::Bar: Sized` that . /// actually carry lifetime requirements. 215,055 ( 0.01%) pub fn is_sized(&'tcx self, tcx_at: TyCtxtAt<'tcx>, param_env: ty::ParamEnv<'tcx>) -> bool { 119,475 ( 0.01%) self.is_trivially_sized(tcx_at.tcx) || tcx_at.is_sized_raw(param_env.and(self)) 143,370 ( 0.01%) } . . /// Checks whether values of this type `T` implement the `Freeze` . /// trait -- frozen types are those that do not contain an . /// `UnsafeCell` anywhere. This is a language concept used to . /// distinguish "true immutability", which is relevant to . /// optimization as well as the rules around static values. Note . /// that the `Freeze` trait is not exposed to end users and is . /// effectively an implementation detail. 306,801 ( 0.02%) pub fn is_freeze(&'tcx self, tcx_at: TyCtxtAt<'tcx>, param_env: ty::ParamEnv<'tcx>) -> bool { 170,445 ( 0.01%) self.is_trivially_freeze() || tcx_at.is_freeze_raw(param_env.and(self)) 204,534 ( 0.01%) } . . /// Fast path helper for testing if a type is `Freeze`. . /// . /// Returning true means the type is known to be `Freeze`. Returning . /// `false` means nothing -- could be `Freeze`, might not be. . fn is_trivially_freeze(&self) -> bool { . match self.kind() { . ty::Int(_) -- line 701 ---------------------------------------- -- line 731 ---------------------------------------- . pub fn is_unpin(&'tcx self, tcx_at: TyCtxtAt<'tcx>, param_env: ty::ParamEnv<'tcx>) -> bool { . self.is_trivially_unpin() || tcx_at.is_unpin_raw(param_env.and(self)) . } . . /// Fast path helper for testing if a type is `Unpin`. . /// . /// Returning true means the type is known to be `Unpin`. Returning . /// `false` means nothing -- could be `Unpin`, might not be. 170,540 ( 0.01%) fn is_trivially_unpin(&self) -> bool { 170,570 ( 0.01%) match self.kind() { . ty::Int(_) . | ty::Uint(_) . | ty::Float(_) . | ty::Bool . | ty::Char . | ty::Str . | ty::Never . | ty::Ref(..) . | ty::RawPtr(_) . | ty::FnDef(..) . | ty::Error(_) . | ty::FnPtr(_) => true, . ty::Tuple(_) => self.tuple_fields().all(Self::is_trivially_unpin), 12 ( 0.00%) ty::Slice(elem_ty) | ty::Array(elem_ty, _) => elem_ty.is_trivially_unpin(), . ty::Adt(..) . | ty::Bound(..) . | ty::Closure(..) . | ty::Dynamic(..) . | ty::Foreign(_) . | ty::Generator(..) . | ty::GeneratorWitness(_) . | ty::Infer(_) . | ty::Opaque(..) . | ty::Param(_) . | ty::Placeholder(_) . | ty::Projection(_) => false, . } 238,756 ( 0.01%) } . . /// If `ty.needs_drop(...)` returns `true`, then `ty` is definitely . /// non-copy and *might* have a destructor attached; if it returns . /// `false`, then `ty` definitely has no destructor (i.e., no drop glue). . /// . /// (Note that this implies that if `ty` has a destructor attached, . /// then `needs_drop` will definitely return `true` for `ty`.) . /// . /// Note that this method is used to check eligible types in unions. . #[inline] 133,460 ( 0.01%) pub fn needs_drop(&'tcx self, tcx: TyCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>) -> bool { . // Avoid querying in simple cases. 161,438 ( 0.01%) match needs_drop_components(self, &tcx.data_layout) { . Err(AlwaysRequiresDrop) => true, 98,728 ( 0.01%) Ok(components) => { . let query_ty = match *components { 69,768 ( 0.00%) [] => return false, . // If we've got a single component, call the query with that . // to increase the chance that we hit the query cache. 10,200 ( 0.00%) [component_ty] => component_ty, . _ => self, . }; . . // This doesn't depend on regions, so try to minimize distinct . // query keys used. . // If normalization fails, we just use `query_ty`. . let query_ty = . tcx.try_normalize_erasing_regions(param_env, query_ty).unwrap_or(query_ty); . . tcx.needs_drop_raw(param_env.and(query_ty)) . } . } 120,114 ( 0.01%) } . . /// Checks if `ty` has has a significant drop. . /// . /// Note that this method can return false even if `ty` has a destructor . /// attached; even if that is the case then the adt has been marked with . /// the attribute `rustc_insignificant_dtor`. . /// . /// Note that this method is used to check for change in drop order for -- line 809 ---------------------------------------- -- line 854 ---------------------------------------- . /// . /// This function is "shallow" because it may return `true` for a composite type whose fields . /// are not `StructuralEq`. For example, `[T; 4]` has structural equality regardless of `T` . /// because equality for arrays is determined by the equality of each array element. If you . /// want to know whether a given call to `PartialEq::eq` will proceed structurally all the way . /// down, you will need to use a type visitor. . #[inline] . pub fn is_structural_eq_shallow(&'tcx self, tcx: TyCtxt<'tcx>) -> bool { 24 ( 0.00%) match self.kind() { . // Look for an impl of both `PartialStructuralEq` and `StructuralEq`. . Adt(..) => tcx.has_structural_eq_impls(self), . . // Primitive types that satisfy `Eq`. . Bool | Char | Int(_) | Uint(_) | Str | Never => true, . . // Composite types that satisfy `Eq` when all of their fields do. . // -- line 870 ---------------------------------------- -- line 888 ---------------------------------------- . // FIXME(ecstaticmorse): Maybe we should `bug` here? This should probably only be . // called for known, fully-monomorphized types. . Projection(_) | Opaque(..) | Param(_) | Bound(..) | Placeholder(_) | Infer(_) => false, . . Foreign(_) | GeneratorWitness(..) | Error(_) => false, . } . } . 75 ( 0.00%) pub fn same_type(a: Ty<'tcx>, b: Ty<'tcx>) -> bool { 60 ( 0.00%) match (&a.kind(), &b.kind()) { . (&Adt(did_a, substs_a), &Adt(did_b, substs_b)) => { 75 ( 0.00%) if did_a != did_b { . return false; . } . . substs_a.types().zip(substs_b.types()).all(|(a, b)| Self::same_type(a, b)) . } . _ => a == b, . } 90 ( 0.00%) } . . /// Peel off all reference types in this type until there are none left. . /// . /// This method is idempotent, i.e. `ty.peel_refs().peel_refs() == ty.peel_refs()`. . /// . /// # Examples . /// . /// - `u8` -> `u8` . /// - `&'a mut u8` -> `u8` . /// - `&'a &'b u8` -> `u8` . /// - `&'a *const &'b u8 -> *const &'b u8` 352 ( 0.00%) pub fn peel_refs(&'tcx self) -> Ty<'tcx> { . let mut ty = self; 1,254 ( 0.00%) while let Ref(_, inner_ty, _) = ty.kind() { 184 ( 0.00%) ty = inner_ty; . } . ty 352 ( 0.00%) } . . pub fn outer_exclusive_binder(&'tcx self) -> DebruijnIndex { 123 ( 0.00%) self.outer_exclusive_binder 123 ( 0.00%) } . } . . pub enum ExplicitSelf<'tcx> { . ByValue, . ByReference(ty::Region<'tcx>, hir::Mutability), . ByRawPointer(hir::Mutability), . ByBox, . Other, -- line 937 ---------------------------------------- -- line 976 ---------------------------------------- . _ => Other, . } . } . } . . /// Returns a list of types such that the given type needs drop if and only if . /// *any* of the returned types need drop. Returns `Err(AlwaysRequiresDrop)` if . /// this type always needs drop. 287,756 ( 0.02%) pub fn needs_drop_components<'tcx>( . ty: Ty<'tcx>, . target_layout: &TargetDataLayout, . ) -> Result; 2]>, AlwaysRequiresDrop> { 246,648 ( 0.01%) match ty.kind() { . ty::Infer(ty::FreshIntTy(_)) . | ty::Infer(ty::FreshFloatTy(_)) . | ty::Bool . | ty::Int(_) . | ty::Uint(_) . | ty::Float(_) . | ty::Never . | ty::FnDef(..) -- line 996 ---------------------------------------- -- line 1003 ---------------------------------------- . . // Foreign types can never have destructors. . ty::Foreign(..) => Ok(SmallVec::new()), . . ty::Dynamic(..) | ty::Error(_) => Err(AlwaysRequiresDrop), . . ty::Slice(ty) => needs_drop_components(ty, target_layout), . ty::Array(elem_ty, size) => { 114 ( 0.00%) match needs_drop_components(elem_ty, target_layout) { 50 ( 0.00%) Ok(v) if v.is_empty() => Ok(v), 136 ( 0.00%) res => match size.val.try_to_bits(target_layout.pointer_size) { . // Arrays of size zero don't need drop, even if their element . // type does. . Some(0) => Ok(SmallVec::new()), 68 ( 0.00%) Some(_) => res, . // We don't know which of the cases above we are in, so . // return the whole type and let the caller decide what to . // do. . None => Ok(smallvec![ty]), . }, . } . } . // If any field needs drop, then the whole tuple does. 11,552 ( 0.00%) ty::Tuple(..) => ty.tuple_fields().try_fold(SmallVec::new(), move |mut acc, elem| { 97,476 ( 0.01%) acc.extend(needs_drop_components(elem, target_layout)?); 64,984 ( 0.00%) Ok(acc) . }), . . // These require checking for `Copy` bounds or `Adt` destructors. . ty::Adt(..) . | ty::Projection(..) . | ty::Param(_) . | ty::Bound(..) . | ty::Placeholder(..) . | ty::Opaque(..) . | ty::Infer(_) . | ty::Closure(..) 20,660 ( 0.00%) | ty::Generator(..) => Ok(smallvec![ty]), . } 246,648 ( 0.01%) } . 78 ( 0.00%) pub fn is_trivially_const_drop<'tcx>(ty: Ty<'tcx>) -> bool { 52 ( 0.00%) match *ty.kind() { . ty::Bool . | ty::Char . | ty::Int(_) . | ty::Uint(_) . | ty::Float(_) . | ty::Infer(ty::IntVar(_)) . | ty::Infer(ty::FloatVar(_)) . | ty::Str -- line 1053 ---------------------------------------- -- line 1068 ---------------------------------------- . | ty::Infer(_) => false, . . // Not trivial because they have components, and instead of looking inside, . // we'll just perform trait selection. . ty::Closure(..) | ty::Generator(..) | ty::GeneratorWitness(_) | ty::Adt(..) => false, . . ty::Array(ty, _) | ty::Slice(ty) => is_trivially_const_drop(ty), . 4 ( 0.00%) ty::Tuple(tys) => tys.iter().all(|ty| is_trivially_const_drop(ty.expect_ty())), . } 104 ( 0.00%) } . . // Does the equivalent of . // ``` . // let v = self.iter().map(|p| p.fold_with(folder)).collect::>(); . // folder.tcx().intern_*(&v) . // ``` 136,375 ( 0.01%) pub fn fold_list<'tcx, F, T>( . list: &'tcx ty::List, . folder: &mut F, . intern: impl FnOnce(TyCtxt<'tcx>, &[T]) -> &'tcx ty::List, . ) -> Result<&'tcx ty::List, F::Error> . where . F: FallibleTypeFolder<'tcx>, . T: TypeFoldable<'tcx> + PartialEq + Copy, . { . let mut iter = list.iter(); . // Look for the first element that changed 4,773 ( 0.00%) match iter.by_ref().enumerate().find_map(|(i, t)| match t.try_fold_with(folder) { 1,967 ( 0.00%) Ok(new_t) if new_t == t => None, . new_t => Some((i, new_t)), . }) { . Some((i, Ok(new_t))) => { . // An element changed, prepare to intern the resulting list . let mut new_list = SmallVec::<[_; 8]>::with_capacity(list.len()); . new_list.extend_from_slice(&list[..i]); . new_list.push(new_t); . for t in iter { . new_list.push(t.try_fold_with(folder)?) . } 3,457 ( 0.00%) Ok(intern(folder.tcx(), &new_list)) . } . Some((_, Err(err))) => { . return Err(err); . } . None => Ok(list), . } 138,387 ( 0.01%) } . . #[derive(Copy, Clone, Debug, HashStable, TyEncodable, TyDecodable)] . pub struct AlwaysRequiresDrop; . . /// Normalizes all opaque types in the given value, replacing them . /// with their underlying types. 12 ( 0.00%) pub fn normalize_opaque_types<'tcx>( . tcx: TyCtxt<'tcx>, . val: &'tcx List>, . ) -> &'tcx List> { 21 ( 0.00%) let mut visitor = OpaqueTypeExpander { . seen_opaque_tys: FxHashSet::default(), . expanded_cache: FxHashMap::default(), . primary_def_id: None, . found_recursion: false, . found_any_recursion: false, . check_recursion: false, . tcx, . }; . val.fold_with(&mut visitor) 15 ( 0.00%) } . . pub fn provide(providers: &mut ty::query::Providers) { 2 ( 0.00%) *providers = ty::query::Providers { normalize_opaque_types, ..*providers } . } 501,904 ( 0.03%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/char/mod.rs -------------------------------------------------------------------------------- Ir -- line 140 ---------------------------------------- . Backslash, . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl Iterator for EscapeUnicode { . type Item = char; . . fn next(&mut self) -> Option { 504,975 ( 0.03%) match self.state { . EscapeUnicodeState::Backslash => { 22,498 ( 0.00%) self.state = EscapeUnicodeState::Type; . Some('\\') . } . EscapeUnicodeState::Type => { 22,498 ( 0.00%) self.state = EscapeUnicodeState::LeftBrace; . Some('u') . } . EscapeUnicodeState::LeftBrace => { 22,498 ( 0.00%) self.state = EscapeUnicodeState::Value; . Some('{') . } . EscapeUnicodeState::Value => { 492,250 ( 0.03%) let hex_digit = ((self.c as u32) >> (self.hex_digit_idx * 4)) & 0xf; . let c = from_digit(hex_digit, 16).unwrap(); 89,500 ( 0.01%) if self.hex_digit_idx == 0 { 11,249 ( 0.00%) self.state = EscapeUnicodeState::RightBrace; . } else { 67,002 ( 0.00%) self.hex_digit_idx -= 1; . } . Some(c) . } . EscapeUnicodeState::RightBrace => { 22,498 ( 0.00%) self.state = EscapeUnicodeState::Done; . Some('}') . } . EscapeUnicodeState::Done => None, . } . } . . #[inline] . fn size_hint(&self) -> (usize, Option) { -- line 180 ---------------------------------------- -- line 200 ---------------------------------------- . } . } . . #[stable(feature = "exact_size_escape", since = "1.11.0")] . impl ExactSizeIterator for EscapeUnicode { . #[inline] . fn len(&self) -> usize { . // The match is a single memory access with no branching 22,498 ( 0.00%) self.hex_digit_idx . + match self.state { . EscapeUnicodeState::Done => 0, . EscapeUnicodeState::RightBrace => 1, . EscapeUnicodeState::Value => 2, . EscapeUnicodeState::LeftBrace => 3, . EscapeUnicodeState::Type => 4, . EscapeUnicodeState::Backslash => 5, . } -- line 216 ---------------------------------------- -- line 240 ---------------------------------------- . #[stable(feature = "rust1", since = "1.0.0")] . pub struct EscapeDefault { . state: EscapeDefaultState, . } . . #[derive(Clone, Debug)] . enum EscapeDefaultState { . Done, 2 ( 0.00%) Char(char), . Backslash(char), . Unicode(EscapeUnicode), . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl Iterator for EscapeDefault { . type Item = char; . 101,167 ( 0.01%) fn next(&mut self) -> Option { 616,622 ( 0.04%) match self.state { . EscapeDefaultState::Backslash(c) => { 44 ( 0.00%) self.state = EscapeDefaultState::Char(c); . Some('\\') . } 75 ( 0.00%) EscapeDefaultState::Char(c) => { 75 ( 0.00%) self.state = EscapeDefaultState::Done; . Some(c) . } . EscapeDefaultState::Done => None, . EscapeDefaultState::Unicode(ref mut iter) => iter.next(), . } 202,334 ( 0.01%) } . . #[inline] . fn size_hint(&self) -> (usize, Option) { 11,324 ( 0.00%) let n = self.len(); . (n, Some(n)) . } . . #[inline] . fn count(self) -> usize { . self.len() . } . -- line 282 ---------------------------------------- -- line 310 ---------------------------------------- . EscapeDefaultState::Done => None, . EscapeDefaultState::Backslash(c) | EscapeDefaultState::Char(c) => Some(c), . } . } . } . . #[stable(feature = "exact_size_escape", since = "1.11.0")] . impl ExactSizeIterator for EscapeDefault { 11,324 ( 0.00%) fn len(&self) -> usize { 33,972 ( 0.00%) match self.state { . EscapeDefaultState::Done => 0, . EscapeDefaultState::Char(_) => 1, . EscapeDefaultState::Backslash(_) => 2, 11,249 ( 0.00%) EscapeDefaultState::Unicode(ref iter) => iter.len(), . } 22,648 ( 0.00%) } . } . . #[stable(feature = "fused", since = "1.26.0")] . impl FusedIterator for EscapeDefault {} . . #[stable(feature = "char_struct_display", since = "1.16.0")] . impl fmt::Display for EscapeDefault { . fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { -- line 333 ---------------------------------------- -- line 382 ---------------------------------------- . #[derive(Debug, Clone)] . pub struct ToLowercase(CaseMappingIter); . . #[stable(feature = "rust1", since = "1.0.0")] . impl Iterator for ToLowercase { . type Item = char; . fn next(&mut self) -> Option { . self.0.next() 2,682 ( 0.00%) } . fn size_hint(&self) -> (usize, Option) { . self.0.size_hint() . } . } . . #[stable(feature = "case_mapping_double_ended", since = "1.59.0")] . impl DoubleEndedIterator for ToLowercase { . fn next_back(&mut self) -> Option { -- line 398 ---------------------------------------- -- line 444 ---------------------------------------- . enum CaseMappingIter { . Three(char, char, char), . Two(char, char), . One(char), . Zero, . } . . impl CaseMappingIter { 18,774 ( 0.00%) fn new(chars: [char; 3]) -> CaseMappingIter { 2,682 ( 0.00%) if chars[2] == '\0' { . if chars[1] == '\0' { . CaseMappingIter::One(chars[0]) // Including if chars[0] == '\0' . } else { . CaseMappingIter::Two(chars[0], chars[1]) . } . } else { . CaseMappingIter::Three(chars[0], chars[1], chars[2]) . } 26,820 ( 0.00%) } . } . . impl Iterator for CaseMappingIter { . type Item = char; . fn next(&mut self) -> Option { 16,092 ( 0.00%) match *self { . CaseMappingIter::Three(a, b, c) => { . *self = CaseMappingIter::Two(b, c); . Some(a) . } . CaseMappingIter::Two(b, c) => { . *self = CaseMappingIter::One(c); . Some(b) . } 2,682 ( 0.00%) CaseMappingIter::One(c) => { 2,682 ( 0.00%) *self = CaseMappingIter::Zero; . Some(c) . } . CaseMappingIter::Zero => None, . } . } . . fn size_hint(&self) -> (usize, Option) { . let size = match self { -- line 486 ---------------------------------------- 1,128 ( 0.00%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_parse/src/lexer/mod.rs -------------------------------------------------------------------------------- Ir -- line 26 ---------------------------------------- . pub struct UnmatchedBrace { . pub expected_delim: token::DelimToken, . pub found_delim: Option, . pub found_span: Span, . pub unclosed_span: Option, . pub candidate_span: Option, . } . 70 ( 0.00%) crate fn parse_token_trees<'a>( . sess: &'a ParseSess, . src: &'a str, . start_pos: BytePos, . override_span: Option, . ) -> (PResult<'a, TokenStream>, Vec) { . StringReader { sess, start_pos, pos: start_pos, end_src_index: src.len(), src, override_span } . .into_token_trees() 45 ( 0.00%) } . . struct StringReader<'a> { . sess: &'a ParseSess, . /// Initial position, read-only. . start_pos: BytePos, . /// The absolute offset within the source_map of the current character. . pos: BytePos, . /// Stop reading src at this index. -- line 50 ---------------------------------------- -- line 51 ---------------------------------------- . end_src_index: usize, . /// Source text to tokenize. . src: &'a str, . override_span: Option, . } . . impl<'a> StringReader<'a> { . fn mk_sp(&self, lo: BytePos, hi: BytePos) -> Span { 64,993 ( 0.00%) self.override_span.unwrap_or_else(|| Span::with_root_ctxt(lo, hi)) . } . . /// Returns the next token, and info about preceding whitespace, if any. 389,858 ( 0.02%) fn next_token(&mut self) -> (Spacing, Token) { . let mut spacing = Spacing::Joint; . . // Skip `#!` at the start of the file 111,388 ( 0.01%) let start_src_index = self.src_index(self.pos); 167,082 ( 0.01%) let text: &str = &self.src[start_src_index..self.end_src_index]; . let is_beginning_of_file = self.pos == self.start_pos; 55,694 ( 0.00%) if is_beginning_of_file { 20 ( 0.00%) if let Some(shebang_len) = rustc_lexer::strip_shebang(text) { . self.pos = self.pos + BytePos::from_usize(shebang_len); . spacing = Spacing::Alone; . } . } . . // Skip trivial (whitespace & comments) tokens . loop { 99,858 ( 0.01%) let start_src_index = self.src_index(self.pos); 233,328 ( 0.01%) let text: &str = &self.src[start_src_index..self.end_src_index]; . 77,776 ( 0.00%) if text.is_empty() { . let span = self.mk_sp(self.pos, self.pos); 25 ( 0.00%) return (spacing, Token::new(token::Eof, span)); . } . 233,313 ( 0.01%) let token = rustc_lexer::first_token(text); . 155,542 ( 0.01%) let start = self.pos; 77,771 ( 0.00%) self.pos = self.pos + BytePos::from_usize(token.len); . . debug!("next_token: {:?}({:?})", token.kind, self.str_from(start)); . 624,112 ( 0.04%) match self.cook_lexer_token(token.kind, start) { 445,512 ( 0.03%) Some(kind) => { . let span = self.mk_sp(start, self.pos); 334,134 ( 0.02%) return (spacing, Token::new(kind, span)); . } . None => spacing = Spacing::Alone, . } . } 501,246 ( 0.03%) } . . /// Report a fatal lexical error with a given span. . fn fatal_span(&self, sp: Span, m: &str) -> FatalError { . self.sess.span_diagnostic.span_fatal(sp, m) . } . . /// Report a lexical error with a given span. . fn err_span(&self, sp: Span, m: &str) { -- line 110 ---------------------------------------- -- line 130 ---------------------------------------- . ) -> DiagnosticBuilder<'a> { . self.sess . .span_diagnostic . .struct_span_fatal(self.mk_sp(from_pos, to_pos), &format!("{}: {}", m, escaped_char(c))) . } . . /// Detect usages of Unicode codepoints changing the direction of the text on screen and loudly . /// complain about it. 1,869 ( 0.00%) fn lint_unicode_text_flow(&self, start: BytePos) { . // Opening delimiter of the length 2 is not included into the comment text. . let content_start = start + BytePos(2); . let content = self.str_from(content_start); . if contains_text_flow_control_chars(content) { . let span = self.mk_sp(start, self.pos); . self.sess.buffer_lint_with_diagnostic( . &TEXT_DIRECTION_CODEPOINT_IN_COMMENT, . span, . ast::CRATE_NODE_ID, . "unicode codepoint changing visible direction of text present in comment", . BuiltinLintDiagnostics::UnicodeTextFlow(span, content.to_string()), . ); . } 2,136 ( 0.00%) } . . /// Turns simple `rustc_lexer::TokenKind` enum into a rich . /// `rustc_ast::TokenKind`. This turns strings into interned . /// symbols and runs additional validation. . fn cook_lexer_token(&self, token: rustc_lexer::TokenKind, start: BytePos) -> Option { 388,855 ( 0.02%) Some(match token { 753 ( 0.00%) rustc_lexer::TokenKind::LineComment { doc_style } => { . // Skip non-doc comments 2,964 ( 0.00%) let doc_style = if let Some(doc_style) = doc_style { . doc_style . } else { . self.lint_unicode_text_flow(start); . return None; . }; . . // Opening delimiter of the length 3 is not included into the symbol. . let content_start = start + BytePos(3); . let content = self.str_from(content_start); 2,430 ( 0.00%) self.cook_doc_comment(content_start, content, CommentKind::Line, doc_style) . } . rustc_lexer::TokenKind::BlockComment { doc_style, terminated } => { . if !terminated { . let msg = match doc_style { . Some(_) => "unterminated block doc-comment", . None => "unterminated block comment", . }; . let last_bpos = self.pos; -- line 179 ---------------------------------------- -- line 198 ---------------------------------------- . let content_end = self.pos - BytePos(if terminated { 2 } else { 0 }); . let content = self.str_from_to(content_start, content_end); . self.cook_doc_comment(content_start, content, CommentKind::Block, doc_style) . } . rustc_lexer::TokenKind::Whitespace => return None, . rustc_lexer::TokenKind::Ident . | rustc_lexer::TokenKind::RawIdent . | rustc_lexer::TokenKind::UnknownPrefix => { 37,176 ( 0.00%) let is_raw_ident = token == rustc_lexer::TokenKind::RawIdent; 46,470 ( 0.00%) let is_unknown_prefix = token == rustc_lexer::TokenKind::UnknownPrefix; . let mut ident_start = start; 18,588 ( 0.00%) if is_raw_ident { . ident_start = ident_start + BytePos(2); . } 27,882 ( 0.00%) if is_unknown_prefix { . self.report_unknown_prefix(start); . } 46,470 ( 0.00%) let sym = nfc_normalize(self.str_from(ident_start)); . let span = self.mk_sp(start, self.pos); 37,176 ( 0.00%) self.sess.symbol_gallery.insert(sym, span); 18,588 ( 0.00%) if is_raw_ident { . if !sym.can_be_raw() { . self.err_span(span, &format!("`{}` cannot be a raw identifier", sym)); . } . self.sess.raw_identifier_spans.borrow_mut().push(span); . } 65,058 ( 0.00%) token::Ident(sym, is_raw_ident) . } . rustc_lexer::TokenKind::InvalidIdent . // Do not recover an identifier with emoji if the codepoint is a confusable . // with a recoverable substitution token, like `➖`. . if UNICODE_ARRAY . .iter() . .find(|&&(c, _, _)| { . let sym = self.str_from(start); -- line 232 ---------------------------------------- -- line 234 ---------------------------------------- . }) . .is_none() => . { . let sym = nfc_normalize(self.str_from(start)); . let span = self.mk_sp(start, self.pos); . self.sess.bad_unicode_identifiers.borrow_mut().entry(sym).or_default().push(span); . token::Ident(sym, false) . } 183,712 ( 0.01%) rustc_lexer::TokenKind::Literal { kind, suffix_start } => { . let suffix_start = start + BytePos(suffix_start as u32); . let (kind, symbol) = self.cook_lexer_literal(start, suffix_start, kind); 34,446 ( 0.00%) let suffix = if suffix_start < self.pos { . let string = self.str_from(suffix_start); . if string == "_" { . self.sess . .span_diagnostic . .struct_span_warn( . self.mk_sp(suffix_start, self.pos), . "underscore literal suffix is not allowed", . ) -- line 253 ---------------------------------------- -- line 264 ---------------------------------------- . .emit(); . None . } else { . Some(Symbol::intern(string)) . } . } else { . None . }; 91,856 ( 0.01%) token::Literal(token::Lit { kind, symbol, suffix }) . } 312 ( 0.00%) rustc_lexer::TokenKind::Lifetime { starts_with_number } => { . // Include the leading `'` in the real identifier, for macro . // expansion purposes. See #12512 for the gory details of why . // this is necessary. . let lifetime_name = self.str_from(start); 156 ( 0.00%) if starts_with_number { . self.err_span_(start, self.pos, "lifetimes cannot start with a number"); . } 468 ( 0.00%) let ident = Symbol::intern(lifetime_name); 624 ( 0.00%) token::Lifetime(ident) . } . rustc_lexer::TokenKind::Semi => token::Semi, . rustc_lexer::TokenKind::Comma => token::Comma, . rustc_lexer::TokenKind::Dot => token::Dot, . rustc_lexer::TokenKind::OpenParen => token::OpenDelim(token::Paren), . rustc_lexer::TokenKind::CloseParen => token::CloseDelim(token::Paren), . rustc_lexer::TokenKind::OpenBrace => token::OpenDelim(token::Brace), . rustc_lexer::TokenKind::CloseBrace => token::CloseDelim(token::Brace), -- line 291 ---------------------------------------- -- line 324 ---------------------------------------- . err.help("source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used"); . } . err.emit(); . token? . } . }) . } . 5,832 ( 0.00%) fn cook_doc_comment( . &self, . content_start: BytePos, . content: &str, . comment_kind: CommentKind, . doc_style: DocStyle, . ) -> TokenKind { 486 ( 0.00%) if content.contains('\r') { . for (idx, _) in content.char_indices().filter(|&(_, c)| c == '\r') { . self.err_span_( . content_start + BytePos(idx as u32), . content_start + BytePos(idx as u32 + 1), . match comment_kind { . CommentKind::Line => "bare CR not allowed in doc-comment", . CommentKind::Block => "bare CR not allowed in block doc-comment", . }, -- line 347 ---------------------------------------- -- line 349 ---------------------------------------- . } . } . . let attr_style = match doc_style { . DocStyle::Outer => AttrStyle::Outer, . DocStyle::Inner => AttrStyle::Inner, . }; . 1,458 ( 0.00%) token::DocComment(comment_kind, attr_style, Symbol::intern(content)) 7,290 ( 0.00%) } . . fn cook_lexer_literal( . &self, . start: BytePos, . suffix_start: BytePos, . kind: rustc_lexer::LiteralKind, . ) -> (token::LitKind, Symbol) { . // prefix means `"` or `br"` or `r###"`, ... . let (lit_kind, mode, prefix_len, postfix_len) = match kind { 11,334 ( 0.00%) rustc_lexer::LiteralKind::Char { terminated } => { 11,334 ( 0.00%) if !terminated { . self.sess.span_diagnostic.span_fatal_with_code( . self.mk_sp(start, suffix_start), . "unterminated character literal", . error_code!(E0762), . ) . } . (token::Char, Mode::Char, 1, 1) // ' ' . } -- line 377 ---------------------------------------- -- line 380 ---------------------------------------- . self.sess.span_diagnostic.span_fatal_with_code( . self.mk_sp(start + BytePos(1), suffix_start), . "unterminated byte constant", . error_code!(E0763), . ) . } . (token::Byte, Mode::Byte, 2, 1) // b' ' . } 8 ( 0.00%) rustc_lexer::LiteralKind::Str { terminated } => { 8 ( 0.00%) if !terminated { . self.sess.span_diagnostic.span_fatal_with_code( . self.mk_sp(start, suffix_start), . "unterminated double quote string", . error_code!(E0765), . ) . } . (token::Str, Mode::Str, 1, 1) // " " . } -- line 397 ---------------------------------------- -- line 410 ---------------------------------------- . let n = u32::from(n_hashes); . (token::StrRaw(n_hashes), Mode::RawStr, 2 + n, 1 + n) // r##" "## . } . rustc_lexer::LiteralKind::RawByteStr { n_hashes, err } => { . self.report_raw_str_error(start, err); . let n = u32::from(n_hashes); . (token::ByteStrRaw(n_hashes), Mode::RawByteStr, 3 + n, 1 + n) // br##" "## . } 280 ( 0.00%) rustc_lexer::LiteralKind::Int { base, empty_int } => { 140 ( 0.00%) return if empty_int { . self.sess . .span_diagnostic . .struct_span_err_with_code( . self.mk_sp(start, suffix_start), . "no valid digits found for number", . error_code!(E0768), . ) . .emit(); . (token::Integer, sym::integer(0)) . } else { . self.validate_int_literal(base, start, suffix_start); 420 ( 0.00%) (token::Integer, self.symbol_from_to(start, suffix_start)) . }; . } . rustc_lexer::LiteralKind::Float { base, empty_exponent } => { . if empty_exponent { . self.err_span_(start, self.pos, "expected at least one digit in exponent"); . } . . match base { -- line 439 ---------------------------------------- -- line 452 ---------------------------------------- . } . . let id = self.symbol_from_to(start, suffix_start); . return (token::Float, id); . } . }; . let content_start = start + BytePos(prefix_len); . let content_end = suffix_start - BytePos(postfix_len); 34,026 ( 0.00%) let id = self.symbol_from_to(content_start, content_end); . self.validate_literal_escape(mode, content_start, content_end, prefix_len, postfix_len); . (lit_kind, id) . } . . #[inline] . fn src_index(&self, pos: BytePos) -> usize { . (pos - self.start_pos).to_usize() . } . . /// Slice of the source text from `start` up to but excluding `self.pos`, . /// meaning the slice does not include the character `self.ch`. . fn str_from(&self, start: BytePos) -> &str { 63,618 ( 0.00%) self.str_from_to(start, self.pos) . } . . /// As symbol_from, with an explicit endpoint. . fn symbol_from_to(&self, start: BytePos, end: BytePos) -> Symbol { . debug!("taking an ident from {:?} to {:?}", start, end); 137,084 ( 0.01%) Symbol::intern(self.str_from_to(start, end)) . } . . /// Slice of the source text spanning from `start` up to but excluding `end`. 33,027 ( 0.00%) fn str_from_to(&self, start: BytePos, end: BytePos) -> &str { . &self.src[self.src_index(start)..self.src_index(end)] 132,108 ( 0.01%) } . . fn report_raw_str_error(&self, start: BytePos, opt_err: Option) { . match opt_err { . Some(RawStrError::InvalidStarter { bad_char }) => { . self.report_non_started_raw_string(start, bad_char) . } . Some(RawStrError::NoTerminator { expected, found, possible_terminator_offset }) => self . .report_unterminated_raw_string(start, expected, possible_terminator_offset, found), -- line 493 ---------------------------------------- -- line 609 ---------------------------------------- . fn validate_literal_escape( . &self, . mode: Mode, . content_start: BytePos, . content_end: BytePos, . prefix_len: u32, . postfix_len: u32, . ) { 68,052 ( 0.00%) let lit_content = self.str_from_to(content_start, content_end); 341,684 ( 0.02%) unescape::unescape_literal(lit_content, mode, &mut |range, result| { . // Here we only check for errors. The actual unescaping is done later. 23,040 ( 0.00%) if let Err(err) = result { . let span_with_quotes = self . .mk_sp(content_start - BytePos(prefix_len), content_end + BytePos(postfix_len)); . let (start, end) = (range.start as u32, range.end as u32); . let lo = content_start + BytePos(start); . let hi = lo + BytePos(end - start); . let span = self.mk_sp(lo, hi); . emit_unescape_error( . &self.sess.span_diagnostic, -- line 628 ---------------------------------------- -- line 629 ---------------------------------------- . lit_content, . span_with_quotes, . span, . mode, . range, . err, . ); . } 103,680 ( 0.01%) }); . } . . fn validate_int_literal(&self, base: Base, content_start: BytePos, content_end: BytePos) { 560 ( 0.00%) let base = match base { . Base::Binary => 2, . Base::Octal => 8, . _ => return, . }; . let s = self.str_from_to(content_start + BytePos(2), content_end); . for (idx, c) in s.char_indices() { . let idx = idx as u32; . if c != '_' && c.to_digit(base).is_none() { -- line 649 ---------------------------------------- -- line 650 ---------------------------------------- . let lo = content_start + BytePos(2 + idx); . let hi = content_start + BytePos(2 + idx + c.len_utf8() as u32); . self.err_span_(lo, hi, &format!("invalid digit for a base {} literal", base)); . } . } . } . } . 83,646 ( 0.00%) pub fn nfc_normalize(string: &str) -> Symbol { . use unicode_normalization::{is_nfc_quick, IsNormalized, UnicodeNormalization}; 18,588 ( 0.00%) match is_nfc_quick(string.chars()) { 92,940 ( 0.01%) IsNormalized::Yes => Symbol::intern(string), . _ => { . let normalized_str: String = string.chars().nfc().collect(); . Symbol::intern(&normalized_str) . } . } . } 342,258 ( 0.02%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_const_eval/src/interpret/place.rs -------------------------------------------------------------------------------- Ir -- line 14 ---------------------------------------- . use rustc_target::abi::{HasDataLayout, Size, VariantIdx, Variants}; . . use super::{ . alloc_range, mir_assign_valid_types, AllocId, AllocRef, AllocRefMut, CheckInAllocMsg, . ConstAlloc, ImmTy, Immediate, InterpCx, InterpResult, LocalValue, Machine, MemoryKind, OpTy, . Operand, Pointer, PointerArithmetic, Provenance, Scalar, ScalarMaybeUninit, . }; . 87,382 ( 0.01%) #[derive(Copy, Clone, Hash, PartialEq, Eq, HashStable, Debug)] . /// Information required for the sound usage of a `MemPlace`. . pub enum MemPlaceMeta { . /// The unsized payload (e.g. length for slices or vtable pointer for trait objects). . Meta(Scalar), . /// `Sized` types or unsized `extern type` . None, . /// The address of this place may not be taken. This protects the `MemPlace` from coming from . /// a ZST Operand without a backing allocation and being converted to an integer address. This -- line 30 ---------------------------------------- -- line 33 ---------------------------------------- . Poison, . } . . #[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))] . rustc_data_structures::static_assert_size!(MemPlaceMeta, 24); . . impl MemPlaceMeta { . pub fn unwrap_meta(self) -> Scalar { 36 ( 0.00%) match self { . Self::Meta(s) => s, . Self::None | Self::Poison => { . bug!("expected wide pointer extra data (e.g. slice length or trait object vtable)") . } . } . } . fn has_meta(self) -> bool { 103,371 ( 0.01%) match self { . Self::Meta(_) => true, . Self::None | Self::Poison => false, . } . } . } . . #[derive(Copy, Clone, Hash, PartialEq, Eq, HashStable, Debug)] . pub struct MemPlace { -- line 57 ---------------------------------------- -- line 113 ---------------------------------------- . fn deref(&self) -> &MemPlace { . &self.mplace . } . } . . impl<'tcx, Tag: Provenance> From> for PlaceTy<'tcx, Tag> { . #[inline(always)] . fn from(mplace: MPlaceTy<'tcx, Tag>) -> Self { 504 ( 0.00%) PlaceTy { place: Place::Ptr(mplace.mplace), layout: mplace.layout } . } . } . . impl MemPlace { . #[inline(always)] . pub fn from_ptr(ptr: Pointer>, align: Align) -> Self { . MemPlace { ptr, align, meta: MemPlaceMeta::None } . } -- line 129 ---------------------------------------- -- line 132 ---------------------------------------- . pub fn map_provenance(self, f: impl FnOnce(Option) -> Option) -> Self { . MemPlace { ptr: self.ptr.map_provenance(f), ..self } . } . . /// Turn a mplace into a (thin or wide) pointer, as a reference, pointing to the same space. . /// This is the inverse of `ref_to_mplace`. . #[inline(always)] . pub fn to_ref(self, cx: &impl HasDataLayout) -> Immediate { 180 ( 0.00%) match self.meta { 126 ( 0.00%) MemPlaceMeta::None => Immediate::from(Scalar::from_maybe_pointer(self.ptr, cx)), . MemPlaceMeta::Meta(meta) => { . Immediate::ScalarPair(Scalar::from_maybe_pointer(self.ptr, cx).into(), meta.into()) . } . MemPlaceMeta::Poison => bug!( . "MPlaceTy::dangling may never be used to produce a \ . place that will have the address of its pointee taken" . ), . } -- line 149 ---------------------------------------- -- line 177 ---------------------------------------- . #[inline] . pub fn offset( . &self, . offset: Size, . meta: MemPlaceMeta, . layout: TyAndLayout<'tcx>, . cx: &impl HasDataLayout, . ) -> InterpResult<'tcx, Self> { 556,525 ( 0.03%) Ok(MPlaceTy { mplace: self.mplace.offset(offset, meta, cx)?, layout }) . } . . #[inline] . pub fn from_aligned_ptr(ptr: Pointer>, layout: TyAndLayout<'tcx>) -> Self { 28 ( 0.00%) MPlaceTy { mplace: MemPlace::from_ptr(ptr, layout.align.abi), layout } . } . . #[inline] 20 ( 0.00%) pub(super) fn len(&self, cx: &impl HasDataLayout) -> InterpResult<'tcx, u64> { 80 ( 0.00%) if self.layout.is_unsized() { . // We need to consult `meta` metadata 36 ( 0.00%) match self.layout.ty.kind() { 6 ( 0.00%) ty::Slice(..) | ty::Str => self.mplace.meta.unwrap_meta().to_machine_usize(cx), . _ => bug!("len not supported on unsized type {:?}", self.layout.ty), . } . } else { . // Go through the layout. There are lots of types that support a length, . // e.g., SIMD types. (But not all repr(simd) types even have FieldsShape::Array!) 28 ( 0.00%) match self.layout.fields { 28 ( 0.00%) FieldsShape::Array { count, .. } => Ok(count), . _ => bug!("len not supported on sized type {:?}", self.layout.ty), . } . } 40 ( 0.00%) } . . #[inline] . pub(super) fn vtable(&self) -> Scalar { . match self.layout.ty.kind() { . ty::Dynamic(..) => self.mplace.meta.unwrap_meta(), . _ => bug!("vtable not supported on type {:?}", self.layout.ty), . } . } -- line 217 ---------------------------------------- -- line 218 ---------------------------------------- . } . . // These are defined here because they produce a place. . impl<'tcx, Tag: Provenance> OpTy<'tcx, Tag> { . #[inline(always)] . /// Note: do not call `as_ref` on the resulting place. This function should only be used to . /// read from the resulting mplace, not to get its address back. . pub fn try_as_mplace(&self) -> Result, ImmTy<'tcx, Tag>> { 289,136 ( 0.02%) match **self { 1,516,212 ( 0.09%) Operand::Indirect(mplace) => Ok(MPlaceTy { mplace, layout: self.layout }), . Operand::Immediate(_) if self.layout.is_zst() => Ok(MPlaceTy::dangling(self.layout)), 79,527 ( 0.00%) Operand::Immediate(imm) => Err(ImmTy::from_immediate(imm, self.layout)), . } . } . . #[inline(always)] . /// Note: do not call `as_ref` on the resulting place. This function should only be used to . /// read from the resulting mplace, not to get its address back. . pub fn assert_mem_place(&self) -> MPlaceTy<'tcx, Tag> { . self.try_as_mplace().unwrap() -- line 237 ---------------------------------------- -- line 263 ---------------------------------------- . M: Machine<'mir, 'tcx, PointerTag = Tag>, . { . /// Take a value, which represents a (thin or wide) reference, and make it a place. . /// Alignment is just based on the type. This is the inverse of `MemPlace::to_ref()`. . /// . /// Only call this if you are sure the place is "valid" (aligned and inbounds), or do not . /// want to ever use the place for memory access! . /// Generally prefer `deref_operand`. 360 ( 0.00%) pub fn ref_to_mplace( . &self, . val: &ImmTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, MPlaceTy<'tcx, M::PointerTag>> { . let pointee_type = 108 ( 0.00%) val.layout.ty.builtin_deref(true).expect("`ref_to_mplace` called on non-ptr type").ty; 108 ( 0.00%) let layout = self.layout_of(pointee_type)?; 180 ( 0.00%) let (ptr, meta) = match **val { 48 ( 0.00%) Immediate::Scalar(ptr) => (ptr, MemPlaceMeta::None), 84 ( 0.00%) Immediate::ScalarPair(ptr, meta) => (ptr, MemPlaceMeta::Meta(meta.check_init()?)), . }; . . let mplace = MemPlace { . ptr: self.scalar_to_ptr(ptr.check_init()?), . // We could use the run-time alignment here. For now, we do not, because . // the point of tracking the alignment here is to make sure that the *static* . // alignment information emitted with the loads is correct. The run-time . // alignment can only be more restrictive. 36 ( 0.00%) align: layout.align.abi, . meta, . }; 612 ( 0.00%) Ok(MPlaceTy { mplace, layout }) 324 ( 0.00%) } . . /// Take an operand, representing a pointer, and dereference it to a place -- that . /// will always be a MemPlace. Lives in `place.rs` because it creates a place. 132 ( 0.00%) pub fn deref_operand( . &self, . src: &OpTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, MPlaceTy<'tcx, M::PointerTag>> { 36 ( 0.00%) let val = self.read_immediate(src)?; . trace!("deref to {} on {:?}", val.layout.ty, *val); 24 ( 0.00%) let mplace = self.ref_to_mplace(&val)?; 60 ( 0.00%) self.check_mplace_access(mplace, CheckInAllocMsg::DerefTest)?; 132 ( 0.00%) Ok(mplace) 108 ( 0.00%) } . . #[inline] . pub(super) fn get_alloc( . &self, . place: &MPlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, Option>> { . assert!(!place.layout.is_unsized()); 67,025 ( 0.00%) assert!(!place.meta.has_meta()); 67,025 ( 0.00%) let size = place.layout.size; 603,225 ( 0.04%) self.memory.get(place.ptr, size, place.align) . } . . #[inline] . pub(super) fn get_alloc_mut( . &mut self, . place: &MPlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, Option>> { 21,839 ( 0.00%) assert!(!place.layout.is_unsized()); 21,839 ( 0.00%) assert!(!place.meta.has_meta()); 21,839 ( 0.00%) let size = place.layout.size; 131,034 ( 0.01%) self.memory.get_mut(place.ptr, size, place.align) . } . . /// Check if this mplace is dereferenceable and sufficiently aligned. . fn check_mplace_access( . &self, . mplace: MPlaceTy<'tcx, M::PointerTag>, . msg: CheckInAllocMsg, . ) -> InterpResult<'tcx> { . let (size, align) = self . .size_and_align_of_mplace(&mplace)? 12 ( 0.00%) .unwrap_or((mplace.layout.size, mplace.layout.align.abi)); 12 ( 0.00%) assert!(mplace.mplace.align <= align, "dynamic alignment less strict than static one?"); 12 ( 0.00%) let align = M::enforce_alignment(&self.memory.extra).then_some(align); 36 ( 0.00%) self.memory.check_ptr_access_align(mplace.ptr, size, align.unwrap_or(Align::ONE), msg)?; . Ok(()) . } . . /// Offset a pointer to project to a field of a struct/union. Unlike `place_field`, this is . /// always possible without allocating, so it can take `&self`. Also return the field's layout. . /// This supports both struct and array fields. . /// . /// This also works for arrays, but then the `usize` index type is restricting. . /// For indexing into arrays, use `mplace_index`. . #[inline(always)] . pub fn mplace_field( . &self, . base: &MPlaceTy<'tcx, M::PointerTag>, . field: usize, . ) -> InterpResult<'tcx, MPlaceTy<'tcx, M::PointerTag>> { 374,600 ( 0.02%) let offset = base.layout.fields.offset(field); 255,953 ( 0.01%) let field_layout = base.layout.field(self, field); . . // Offset may need adjustment for unsized fields. 530,412 ( 0.03%) let (meta, offset) = if field_layout.is_unsized() { . // Re-use parent metadata to determine dynamic field layout. . // With custom DSTS, this *will* execute user-defined code, but the same . // happens at run-time so that's okay. . match self.size_and_align_of(&base.meta, &field_layout)? { . Some((_, align)) => (base.meta, offset.align_to(align)), . None => { . // For unsized types with an extern type tail we perform no adjustments. . // NOTE: keep this in sync with `PlaceRef::project_field` in the codegen backend. -- line 369 ---------------------------------------- -- line 374 ---------------------------------------- . } else { . // base.meta could be present; we might be accessing a sized field of an unsized . // struct. . (MemPlaceMeta::None, offset) . }; . . // We do not look at `base.layout.align` nor `field_layout.align`, unlike . // codegen -- mostly to see if we can get away with that 83,984 ( 0.00%) base.offset(offset, meta, field_layout, self) . } . . /// Index into an array. . #[inline(always)] . pub fn mplace_index( . &self, . base: &MPlaceTy<'tcx, M::PointerTag>, . index: u64, -- line 390 ---------------------------------------- -- line 409 ---------------------------------------- . "`mplace_index` called on non-array type {:?}", . base.layout.ty . ), . } . } . . // Iterates over all fields of an array. Much more efficient than doing the . // same by repeatedly calling `mplace_array`. 200 ( 0.00%) pub(super) fn mplace_array_fields<'a>( . &self, . base: &'a MPlaceTy<'tcx, Tag>, . ) -> InterpResult<'tcx, impl Iterator>> + 'a> . { 80 ( 0.00%) let len = base.len(self)?; // also asserts that we have a type where this makes sense 60 ( 0.00%) let stride = match base.layout.fields { 20 ( 0.00%) FieldsShape::Array { stride, .. } => stride, . _ => span_bug!(self.cur_span(), "mplace_array_fields: expected an array layout"), . }; 40 ( 0.00%) let layout = base.layout.field(self, 0); 20 ( 0.00%) let dl = &self.tcx.data_layout; . // `Size` multiplication 102,086 ( 0.01%) Ok((0..len).map(move |i| base.offset(stride * i, MemPlaceMeta::None, layout, dl))) 180 ( 0.00%) } . . fn mplace_subslice( . &self, . base: &MPlaceTy<'tcx, M::PointerTag>, . from: u64, . to: u64, . from_end: bool, . ) -> InterpResult<'tcx, MPlaceTy<'tcx, M::PointerTag>> { -- line 439 ---------------------------------------- -- line 476 ---------------------------------------- . } . . pub(crate) fn mplace_downcast( . &self, . base: &MPlaceTy<'tcx, M::PointerTag>, . variant: VariantIdx, . ) -> InterpResult<'tcx, MPlaceTy<'tcx, M::PointerTag>> { . // Downcasts only change the layout 14,507 ( 0.00%) assert!(!base.meta.has_meta()); 43,533 ( 0.00%) Ok(MPlaceTy { layout: base.layout.for_variant(self, variant), ..*base }) . } . . /// Project into an mplace . pub(super) fn mplace_projection( . &self, . base: &MPlaceTy<'tcx, M::PointerTag>, . proj_elem: mir::PlaceElem<'tcx>, . ) -> InterpResult<'tcx, MPlaceTy<'tcx, M::PointerTag>> { -- line 493 ---------------------------------------- -- line 542 ---------------------------------------- . assert_eq!(layout.size, base.layout.size); . Ok((MPlaceTy { layout, ..*base }, len)) . } . . /// Gets the place of a field inside the place, and also the field's type. . /// Just a convenience function, but used quite a bit. . /// This is the only projection that might have a side-effect: We cannot project . /// into the field of a local `ScalarPair`, we have to first allocate it. 266,610 ( 0.02%) pub fn place_field( . &mut self, . base: &PlaceTy<'tcx, M::PointerTag>, . field: usize, . ) -> InterpResult<'tcx, PlaceTy<'tcx, M::PointerTag>> { . // FIXME: We could try to be smarter and avoid allocation for fields that span the . // entire place. 26,661 ( 0.00%) let mplace = self.force_allocation(base)?; 319,932 ( 0.02%) Ok(self.mplace_field(&mplace, field)?.into()) 213,288 ( 0.01%) } . . pub fn place_index( . &mut self, . base: &PlaceTy<'tcx, M::PointerTag>, . index: u64, . ) -> InterpResult<'tcx, PlaceTy<'tcx, M::PointerTag>> { . let mplace = self.force_allocation(base)?; . Ok(self.mplace_index(&mplace, index)?.into()) -- line 567 ---------------------------------------- -- line 586 ---------------------------------------- . . /// Projects into a place. . pub fn place_projection( . &mut self, . base: &PlaceTy<'tcx, M::PointerTag>, . &proj_elem: &mir::ProjectionElem>, . ) -> InterpResult<'tcx, PlaceTy<'tcx, M::PointerTag>> { . use rustc_middle::mir::ProjectionElem::*; 242,565 ( 0.01%) Ok(match proj_elem { 80,795 ( 0.00%) Field(field, _) => self.place_field(base, field.index())?, . Downcast(_, variant) => self.place_downcast(base, variant)?, 96 ( 0.00%) Deref => self.deref_operand(&self.place_to_op(base)?)?.into(), . // For the other variants, we have to force an allocation. . // This matches `operand_projection`. . Subslice { .. } | ConstantIndex { .. } | Index(_) => { . let mplace = self.force_allocation(base)?; . self.mplace_projection(&mplace, proj_elem)?.into() . } . }) . } -- line 605 ---------------------------------------- -- line 611 ---------------------------------------- . base: &PlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, (MPlaceTy<'tcx, M::PointerTag>, u64)> { . let mplace = self.force_allocation(base)?; . self.mplace_to_simd(&mplace) . } . . /// Computes a place. You should only use this if you intend to write into this . /// place; for reading, a more efficient alternative is `eval_place_for_read`. 168,408 ( 0.01%) pub fn eval_place( . &mut self, . place: mir::Place<'tcx>, . ) -> InterpResult<'tcx, PlaceTy<'tcx, M::PointerTag>> { 105,255 ( 0.01%) let mut place_ty = PlaceTy { . // This works even for dead/uninitialized locals; we check further when writing . place: Place::Local { frame: self.frame_idx(), local: place.local }, . layout: self.layout_of_local(self.frame(), place.local, None)?, . }; . 32,342 ( 0.00%) for elem in place.projection.iter() { 16,171 ( 0.00%) place_ty = self.place_projection(&place_ty, &elem)? . } . . trace!("{:?}", self.dump_place(place_ty.place)); . // Sanity-check the type we ended up with. . debug_assert!(mir_assign_valid_types( . *self.tcx, . self.param_env, . self.layout_of(self.subst_from_current_frame_and_normalize_erasing_regions( . place.ty(&self.frame().body.local_decls, *self.tcx).ty . )?)?, . place_ty.layout, . )); 378,918 ( 0.02%) Ok(place_ty) 168,408 ( 0.01%) } . . /// Write an immediate to a place . #[inline(always)] . pub fn write_immediate( . &mut self, . src: Immediate, . dest: &PlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx> { 24,443 ( 0.00%) self.write_immediate_no_validate(src, dest)?; . . if M::enforce_validity(self) { . // Data got changed, better make sure it matches the type! . self.validate_operand(&self.place_to_op(dest)?)?; . } . . Ok(()) . } -- line 661 ---------------------------------------- -- line 678 ---------------------------------------- . dest: &PlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx> { . self.write_scalar(Scalar::from_maybe_pointer(ptr.into(), self), dest) . } . . /// Write an immediate to a place. . /// If you use this you are responsible for validating that things got copied at the . /// right type. 21,869 ( 0.00%) fn write_immediate_no_validate( . &mut self, . src: Immediate, . dest: &PlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx> { . if cfg!(debug_assertions) { . // This is a very common path, avoid some checks in release mode . assert!(!dest.layout.is_unsized(), "Cannot write unsized data"); . match src { -- line 694 ---------------------------------------- -- line 705 ---------------------------------------- . // FIXME: Can we check anything here? . } . } . } . trace!("write_immediate: {:?} <- {:?}: {}", *dest, src, dest.layout.ty); . . // See if we can avoid an allocation. This is the counterpart to `try_read_immediate`, . // but not factored as a separate function. 43,738 ( 0.00%) let mplace = match dest.place { 60 ( 0.00%) Place::Local { frame, local } => { . match M::access_local_mut(self, frame, local)? { . Ok(local) => { . // Local can be updated in-place. 300 ( 0.00%) *local = LocalValue::Live(Operand::Immediate(src)); . return Ok(()); . } . Err(mplace) => { . // The local is in memory, go on below. . mplace . } . } . } 131,034 ( 0.01%) Place::Ptr(mplace) => mplace, // already referring to memory . }; 196,551 ( 0.01%) let dest = MPlaceTy { mplace, layout: dest.layout }; . . // This is already in memory, write there. 240,229 ( 0.01%) self.write_immediate_to_mplace_no_validate(src, &dest) 43,738 ( 0.00%) } . . /// Write an immediate to memory. . /// If you use this you are responsible for validating that things got copied at the . /// right type. 218,390 ( 0.01%) fn write_immediate_to_mplace_no_validate( . &mut self, . value: Immediate, . dest: &MPlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx> { . // Note that it is really important that the type here is the right one, and matches the . // type things are read at. In case `src_val` is a `ScalarPair`, we don't do any magic here . // to handle padding properly, which is only correct if we never look at this data with the . // wrong type. . . // Invalid places are a thing: the return place of a diverging function 21,839 ( 0.00%) let tcx = *self.tcx; 43,678 ( 0.00%) let mut alloc = match self.get_alloc_mut(dest)? { 109,195 ( 0.01%) Some(a) => a, . None => return Ok(()), // zero-sized access . }; . . // FIXME: We should check that there are dest.layout.size many bytes available in . // memory. The code below is not sufficient, with enough padding it might not . // cover all the bytes! 43,678 ( 0.00%) match value { . Immediate::Scalar(scalar) => { 42,010 ( 0.00%) match dest.layout.abi { . Abi::Scalar(_) => {} // fine . _ => span_bug!( . self.cur_span(), . "write_immediate_to_mplace: invalid Scalar layout: {:#?}", . dest.layout . ), . } 189,045 ( 0.01%) alloc.write_scalar(alloc_range(Size::ZERO, dest.layout.size), scalar) . } . Immediate::ScalarPair(a_val, b_val) => { . // We checked `ptr_align` above, so all fields will have the alignment they need. . // We would anyway check against `ptr_align.restrict_for_offset(b_offset)`, . // which `ptr.offset(b_offset)` cannot possibly fail to satisfy. 1,668 ( 0.00%) let (a, b) = match dest.layout.abi { 7,470 ( 0.00%) Abi::ScalarPair(a, b) => (a.value, b.value), . _ => span_bug!( . self.cur_span(), . "write_immediate_to_mplace: invalid ScalarPair layout: {:#?}", . dest.layout . ), . }; . let (a_size, b_size) = (a.size(&tcx), b.size(&tcx)); . let b_offset = a_size.align_to(b.align(&tcx).abi); . . // It is tempting to verify `b_offset` against `layout.fields.offset(1)`, . // but that does not work: We could be a newtype around a pair, then the . // fields do not match the `ScalarPair` components. . 8,340 ( 0.00%) alloc.write_scalar(alloc_range(Size::ZERO, a_size), a_val)?; 6,672 ( 0.00%) alloc.write_scalar(alloc_range(b_offset, b_size), b_val) . } . } 174,712 ( 0.01%) } . . /// Copies the data from an operand to a place. This does not support transmuting! . /// Use `copy_op_transmute` if the layouts could disagree. . #[inline(always)] . pub fn copy_op( . &mut self, . src: &OpTy<'tcx, M::PointerTag>, . dest: &PlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx> { 114,941 ( 0.01%) self.copy_op_no_validate(src, dest)?; . . if M::enforce_validity(self) { . // Data got changed, better make sure it matches the type! . self.validate_operand(&self.place_to_op(dest)?)?; . } . . Ok(()) . } . . /// Copies the data from an operand to a place. This does not support transmuting! . /// Use `copy_op_transmute` if the layouts could disagree. . /// Also, if you use this you are responsible for validating that things get copied at the . /// right type. 174,752 ( 0.01%) fn copy_op_no_validate( . &mut self, . src: &OpTy<'tcx, M::PointerTag>, . dest: &PlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx> { . // We do NOT compare the types for equality, because well-typed code can . // actually "transmute" `&mut T` to `&T` in an assignment without a cast. 393,192 ( 0.02%) if !mir_assign_valid_types(*self.tcx, self.param_env, src.layout, dest.layout) { . span_bug!( . self.cur_span(), . "type mismatch when copying!\nsrc: {:?},\ndest: {:?}", . src.layout.ty, . dest.layout.ty, . ); . } . . // Let us see if the layout is simple so we take a shortcut, avoid force_allocation. 109,220 ( 0.01%) let src = match self.try_read_immediate(src)? { . Ok(src_val) => { 17,008 ( 0.00%) assert!(!src.layout.is_unsized(), "cannot have unsized immediates"); . // Yay, we got a value that we can write directly. . // FIXME: Add a check to make sure that if `src` is indirect, . // it does not overlap with `dest`. 221,104 ( 0.01%) return self.write_immediate_no_validate(*src_val, dest); . } 38,688 ( 0.00%) Err(mplace) => mplace, . }; . // Slow path, this does not fit into an immediate. Just memcpy. . trace!("copy_op: {:?} <- {:?}: {}", *dest, src, dest.layout.ty); . . // This interprets `src.meta` with the `dest` local's layout, if an unsized local . // is being initialized! 62,868 ( 0.00%) let (dest, size) = self.force_allocation_maybe_sized(dest, src.meta)?; . let size = size.unwrap_or_else(|| { 14,508 ( 0.00%) assert!( . !dest.layout.is_unsized(), . "Cannot copy into already initialized unsized place" . ); 4,836 ( 0.00%) dest.layout.size . }); 4,836 ( 0.00%) assert_eq!(src.meta, dest.meta, "Can only copy between equally-sized instances"); . 4,836 ( 0.00%) self.memory 14,508 ( 0.00%) .copy(src.ptr, src.align, dest.ptr, dest.align, size, /*nonoverlapping*/ true) 174,752 ( 0.01%) } . . /// Copies the data from an operand to a place. The layouts may disagree, but they must . /// have the same size. 112 ( 0.00%) pub fn copy_op_transmute( . &mut self, . src: &OpTy<'tcx, M::PointerTag>, . dest: &PlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx> { 252 ( 0.00%) if mir_assign_valid_types(*self.tcx, self.param_env, src.layout, dest.layout) { . // Fast path: Just use normal `copy_op` . return self.copy_op(src, dest); . } . // We still require the sizes to match. . if src.layout.size != dest.layout.size { . // FIXME: This should be an assert instead of an error, but if we transmute within an . // array length computation, `typeck` may not have yet been run and errored out. In fact . // most likey we *are* running `typeck` right now. Investigate whether we can bail out -- line 878 ---------------------------------------- -- line 916 ---------------------------------------- . /// Ensures that a place is in memory, and returns where it is. . /// If the place currently refers to a local that doesn't yet have a matching allocation, . /// create such an allocation. . /// This is essentially `force_to_memplace`. . /// . /// This supports unsized types and returns the computed size to avoid some . /// redundant computation when copying; use `force_allocation` for a simpler, sized-only . /// version. 283,635 ( 0.02%) pub fn force_allocation_maybe_sized( . &mut self, . place: &PlaceTy<'tcx, M::PointerTag>, . meta: MemPlaceMeta, . ) -> InterpResult<'tcx, (MPlaceTy<'tcx, M::PointerTag>, Option)> { 315,150 ( 0.02%) let (mplace, size) = match place.place { 26,667 ( 0.00%) Place::Local { frame, local } => { 53,334 ( 0.00%) match M::access_local_mut(self, frame, local)? { 94,563 ( 0.01%) Ok(&mut local_val) => { . // We need to make an allocation. . . // We need the layout of the local. We can NOT use the layout we got, . // that might e.g., be an inner field of a struct with `Scalar` layout, . // that has different alignment than the outer field. . let local_layout = 52,535 ( 0.00%) self.layout_of_local(&self.stack()[frame], local, None)?; . // We also need to support unsized types, and hence cannot use `allocate`. 42,028 ( 0.00%) let (size, align) = self . .size_and_align_of(&meta, &local_layout)? . .expect("Cannot allocate for non-dyn-sized type"); 73,549 ( 0.00%) let ptr = self.memory.allocate(size, align, MemoryKind::Stack)?; . let mplace = MemPlace { ptr: ptr.into(), align, meta }; 52,535 ( 0.00%) if let LocalValue::Live(Operand::Immediate(value)) = local_val { . // Preserve old value. . // We don't have to validate as we can assume the local . // was already valid for its type. . let mplace = MPlaceTy { mplace, layout: local_layout }; . self.write_immediate_to_mplace_no_validate(value, &mplace)?; . } . // Now we can call `access_mut` again, asserting it goes well, . // and actually overwrite things. 199,633 ( 0.01%) *M::access_local_mut(self, frame, local).unwrap().unwrap() = . LocalValue::Live(Operand::Indirect(mplace)); 73,549 ( 0.00%) (mplace, Some(size)) . } 161,600 ( 0.01%) Err(mplace) => (mplace, None), // this already was an indirect local . } . } 63,024 ( 0.00%) Place::Ptr(mplace) => (mplace, None), . }; . // Return with the original layout, so that the caller can go on 378,180 ( 0.02%) Ok((MPlaceTy { mplace, layout: place.layout }, size)) 252,120 ( 0.01%) } . . #[inline(always)] . pub fn force_allocation( . &mut self, . place: &PlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, MPlaceTy<'tcx, M::PointerTag>> { 240,057 ( 0.01%) Ok(self.force_allocation_maybe_sized(place, MemPlaceMeta::None)?.0) . } . . pub fn allocate( . &mut self, . layout: TyAndLayout<'tcx>, . kind: MemoryKind, . ) -> InterpResult<'static, MPlaceTy<'tcx, M::PointerTag>> { 98 ( 0.00%) let ptr = self.memory.allocate(layout.size, layout.align.abi, kind)?; . Ok(MPlaceTy::from_aligned_ptr(ptr.into(), layout)) . } . . /// Returns a wide MPlace of type `&'static [mut] str` to a new 1-aligned allocation. . pub fn allocate_str( . &mut self, . str: &str, . kind: MemoryKind, -- line 989 ---------------------------------------- -- line 998 ---------------------------------------- . self.tcx.lifetimes.re_static, . ty::TypeAndMut { ty: self.tcx.types.str_, mutbl }, . ); . let layout = self.layout_of(ty).unwrap(); . MPlaceTy { mplace, layout } . } . . /// Writes the discriminant of the given variant. 53,207 ( 0.00%) pub fn write_discriminant( . &mut self, . variant_index: VariantIdx, . dest: &PlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx> { . // This must be an enum or generator. 19,348 ( 0.00%) match dest.layout.ty.kind() { 9,674 ( 0.00%) ty::Adt(adt, _) => assert!(adt.is_enum()), . ty::Generator(..) => {} . _ => span_bug!( . self.cur_span(), . "write_discriminant called on non-variant-type (neither enum nor generator)" . ), . } . // Layout computation excludes uninhabited variants from consideration . // therefore there's no way to represent those variants in the given layout. . // Essentially, uninhabited variants do not have a tag that corresponds to their . // discriminant, so we cannot do anything here. . // When evaluating we will always error before even getting here, but ConstProp 'executes' . // dead code, so we cannot ICE here. 9,674 ( 0.00%) if dest.layout.for_variant(self, variant_index).abi.is_uninhabited() { . throw_ub!(UninhabitedEnumVariantWritten) . } . 24,185 ( 0.00%) match dest.layout.variants { . Variants::Single { index } => { . assert_eq!(index, variant_index); . } . Variants::Multiple { . tag_encoding: TagEncoding::Direct, 14,511 ( 0.00%) tag: tag_layout, 9,674 ( 0.00%) tag_field, . .. . } => { . // No need to validate that the discriminant here because the . // `TyAndLayout::for_variant()` call earlier already checks the variant is valid. . . let discr_val = 19,348 ( 0.00%) dest.layout.ty.discriminant_for_variant(*self.tcx, variant_index).unwrap().val; . . // raw discriminants for enums are isize or bigger during . // their computation, but the in-memory tag is the smallest possible . // representation . let size = tag_layout.value.size(self); . let tag_val = size.truncate(discr_val); . 24,185 ( 0.00%) let tag_dest = self.place_field(dest, tag_field)?; . self.write_scalar(Scalar::from_uint(tag_val, size), &tag_dest)?; . } . Variants::Multiple { . tag_encoding: . TagEncoding::Niche { dataful_variant, ref niche_variants, niche_start }, . tag: tag_layout, . tag_field, . .. -- line 1060 ---------------------------------------- -- line 1082 ---------------------------------------- . // Write result. . let niche_dest = self.place_field(dest, tag_field)?; . self.write_immediate(*tag_val, &niche_dest)?; . } . } . } . . Ok(()) 38,696 ( 0.00%) } . 126 ( 0.00%) pub fn raw_const_to_mplace( . &self, . raw: ConstAlloc<'tcx>, . ) -> InterpResult<'tcx, MPlaceTy<'tcx, M::PointerTag>> { . // This must be an allocation in `tcx` 42 ( 0.00%) let _ = self.tcx.global_alloc(raw.alloc_id); . let ptr = self.global_base_pointer(Pointer::from(raw.alloc_id))?; 42 ( 0.00%) let layout = self.layout_of(raw.ty)?; 84 ( 0.00%) Ok(MPlaceTy::from_aligned_ptr(ptr.into(), layout)) 98 ( 0.00%) } . . /// Turn a place with a `dyn Trait` type into a place with the actual dynamic type. . /// Also return some more information so drop doesn't have to run the same code twice. . pub(super) fn unpack_dyn_trait( . &self, . mplace: &MPlaceTy<'tcx, M::PointerTag>, . ) -> InterpResult<'tcx, (ty::Instance<'tcx>, MPlaceTy<'tcx, M::PointerTag>)> { . let vtable = self.scalar_to_ptr(mplace.vtable()); // also sanity checks the type -- line 1109 ---------------------------------------- 555,372 ( 0.03%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_borrowck/src/type_check/mod.rs -------------------------------------------------------------------------------- Ir -- line 118 ---------------------------------------- . /// - `promoted` -- map of promoted constants within `body` . /// - `universal_regions` -- the universal regions from `body`s function signature . /// - `location_table` -- MIR location map of `body` . /// - `borrow_set` -- information about borrows occurring in `body` . /// - `all_facts` -- when using Polonius, this is the generated set of Polonius facts . /// - `flow_inits` -- results of a maybe-init dataflow analysis . /// - `move_data` -- move-data constructed when performing the maybe-init dataflow analysis . /// - `elements` -- MIR region map 2,112 ( 0.00%) pub(crate) fn type_check<'mir, 'tcx>( . infcx: &InferCtxt<'_, 'tcx>, . param_env: ty::ParamEnv<'tcx>, . body: &Body<'tcx>, . promoted: &IndexVec>, . universal_regions: &Rc>, . location_table: &LocationTable, . borrow_set: &BorrowSet<'tcx>, . all_facts: &mut Option, . flow_inits: &mut ResultsCursor<'mir, 'tcx, MaybeInitializedPlaces<'mir, 'tcx>>, . move_data: &MoveData<'tcx>, . elements: &Rc, . upvars: &[Upvar<'tcx>], . ) -> MirTypeckResults<'tcx> { 1,584 ( 0.00%) let implicit_region_bound = infcx.tcx.mk_region(ty::ReVar(universal_regions.fr_fn_body)); . let mut universe_causes = FxHashMap::default(); . universe_causes.insert(ty::UniverseIndex::from_u32(0), UniverseInfo::other()); 3,872 ( 0.00%) let mut constraints = MirTypeckRegionConstraints { . placeholder_indices: PlaceholderIndices::default(), . placeholder_index_to_region: IndexVec::default(), 176 ( 0.00%) liveness_constraints: LivenessValues::new(elements.clone()), . outlives_constraints: OutlivesConstraintSet::default(), . member_constraints: MemberConstraintSet::default(), . closure_bounds_mapping: Default::default(), . type_tests: Vec::default(), 704 ( 0.00%) universe_causes, . }; . . let CreateResult { 352 ( 0.00%) universal_region_relations, 704 ( 0.00%) region_bound_pairs, 704 ( 0.00%) normalized_inputs_and_output, 880 ( 0.00%) } = free_region_relations::create( . infcx, . param_env, . Some(implicit_region_bound), . universal_regions, . &mut constraints, . ); . 352 ( 0.00%) for u in ty::UniverseIndex::ROOT..infcx.universe() { . let info = UniverseInfo::other(); . constraints.universe_causes.insert(u, info); . } . 1,584 ( 0.00%) let mut borrowck_context = BorrowCheckContext { 176 ( 0.00%) universal_regions, . location_table, . borrow_set, . all_facts, . constraints: &mut constraints, . upvars, . }; . . let opaque_type_values = type_check_internal( -- line 180 ---------------------------------------- -- line 243 ---------------------------------------- . } else { . Some((opaque_type_key, decl)) . } . }) . .collect() . }, . ); . 2,112 ( 0.00%) MirTypeckResults { constraints, universal_region_relations, opaque_type_values } 1,408 ( 0.00%) } . . #[instrument( . skip(infcx, body, promoted, region_bound_pairs, borrowck_context, extra), . level = "debug" . )] . fn type_check_internal<'a, 'tcx, R>( . infcx: &'a InferCtxt<'a, 'tcx>, . param_env: ty::ParamEnv<'tcx>, -- line 260 ---------------------------------------- -- line 270 ---------------------------------------- . body, . param_env, . region_bound_pairs, . implicit_region_bound, . borrowck_context, . ); . let errors_reported = { . let mut verifier = TypeVerifier::new(&mut checker, body, promoted); 176 ( 0.00%) verifier.visit_body(&body); 176 ( 0.00%) verifier.errors_reported . }; . 176 ( 0.00%) if !errors_reported { . // if verifier failed, don't do further checks to avoid ICEs 176 ( 0.00%) checker.typeck_mir(body); . } . 2,288 ( 0.00%) extra(checker) . } . . fn translate_outlives_facts(typeck: &mut TypeChecker<'_, '_>) { . let cx = &mut typeck.borrowck_context; 704 ( 0.00%) if let Some(facts) = cx.all_facts { . let _prof_timer = typeck.infcx.tcx.prof.generic_activity("polonius_fact_generation"); . let location_table = cx.location_table; . facts.subset_base.extend(cx.constraints.outlives_constraints.outlives().iter().flat_map( . |constraint: &OutlivesConstraint<'_>| { . if let Some(from_location) = constraint.locations.from_location() { . Either::Left(iter::once(( . constraint.sup, . constraint.sub, -- line 300 ---------------------------------------- -- line 334 ---------------------------------------- . body: &'b Body<'tcx>, . promoted: &'b IndexVec>, . last_span: Span, . errors_reported: bool, . } . . impl<'a, 'b, 'tcx> Visitor<'tcx> for TypeVerifier<'a, 'b, 'tcx> { . fn visit_span(&mut self, span: &Span) { 236,657 ( 0.01%) if !span.is_dummy() { 59,132 ( 0.00%) self.last_span = *span; . } . } . 318,252 ( 0.02%) fn visit_place(&mut self, place: &Place<'tcx>, context: PlaceContext, location: Location) { . self.sanitize_place(place, location, context); 231,456 ( 0.01%) } . 150,252 ( 0.01%) fn visit_constant(&mut self, constant: &Constant<'tcx>, location: Location) { . self.super_constant(constant, location); 100,168 ( 0.01%) let ty = self.sanitize_type(constant, constant.literal.ty()); . 112,689 ( 0.01%) self.cx.infcx.tcx.for_each_free_region(&ty, |live_region| { . let live_region_vid = . self.cx.borrowck_context.universal_regions.to_region_vid(live_region); 942 ( 0.00%) self.cx . .borrowck_context . .constraints . .liveness_constraints 942 ( 0.00%) .add_element(live_region_vid, location); . }); . 50,084 ( 0.00%) if let Some(annotation_index) = constant.user_ty { 963 ( 0.00%) if let Err(terr) = self.cx.relate_type_and_user_type( 214 ( 0.00%) constant.literal.ty(), . ty::Variance::Invariant, 214 ( 0.00%) &UserTypeProjection { base: annotation_index, projs: vec![] }, 214 ( 0.00%) location.to_locations(), . ConstraintCategory::Boring, . ) { . let annotation = &self.cx.user_type_annotations[annotation_index]; . span_mirbug!( . self, . constant, . "bad constant user type {:?} vs {:?}: {:?}", . annotation, . constant.literal.ty(), . terr, . ); . } . } else { . let tcx = self.tcx(); 37,242 ( 0.00%) let maybe_uneval = match constant.literal { 37,242 ( 0.00%) ConstantKind::Ty(ct) => match ct.val { 100 ( 0.00%) ty::ConstKind::Unevaluated(uv) => Some(uv), . _ => None, . }, . _ => None, . }; 200 ( 0.00%) if let Some(uv) = maybe_uneval { 200 ( 0.00%) if let Some(promoted) = uv.promoted { . let check_err = |verifier: &mut TypeVerifier<'a, 'b, 'tcx>, . promoted: &Body<'tcx>, . ty, . san_ty| { 234 ( 0.00%) if let Err(terr) = verifier.cx.eq_types( . ty, . san_ty, 156 ( 0.00%) location.to_locations(), . ConstraintCategory::Boring, . ) { . span_mirbug!( . verifier, . promoted, . "bad promoted type ({:?}: {:?}): {:?}", . ty, . san_ty, . terr . ); . }; . }; . 156 ( 0.00%) if !self.errors_reported { 78 ( 0.00%) let promoted_body = &self.promoted[promoted]; 312 ( 0.00%) self.sanitize_promoted(promoted_body, location); . . let promoted_ty = promoted_body.return_ty(); . check_err(self, promoted_body, ty, promoted_ty); . } . } else { 154 ( 0.00%) if let Err(terr) = self.cx.fully_perform_op( 44 ( 0.00%) location.to_locations(), . ConstraintCategory::Boring, 154 ( 0.00%) self.cx.param_env.and(type_op::ascribe_user_type::AscribeUserType::new( 44 ( 0.00%) constant.literal.ty(), . uv.def.did, 88 ( 0.00%) UserSubsts { substs: uv.substs, user_self_ty: None }, . )), . ) { . span_mirbug!( . self, . constant, . "bad constant type {:?} ({:?})", . constant, . terr . ); . } . } 49,256 ( 0.00%) } else if let Some(static_def_id) = constant.check_static_ptr(tcx) { . let unnormalized_ty = tcx.type_of(static_def_id); . let locations = location.to_locations(); . let normalized_ty = self.cx.normalize(unnormalized_ty, locations); . let literal_ty = constant.literal.ty().builtin_deref(true).unwrap().ty; . . if let Err(terr) = self.cx.eq_types( . literal_ty, . normalized_ty, . locations, . ConstraintCategory::Boring, . ) { . span_mirbug!(self, constant, "bad static type {:?} ({:?})", constant, terr); . } . } . 51,018 ( 0.00%) if let ty::FnDef(def_id, substs) = *constant.literal.ty().kind() { 908 ( 0.00%) let instantiated_predicates = tcx.predicates_of(def_id).instantiate(tcx, substs); 908 ( 0.00%) self.cx.normalize_and_prove_instantiated_predicates( . def_id, 2,724 ( 0.00%) instantiated_predicates, 908 ( 0.00%) location.to_locations(), . ); . } . } 100,168 ( 0.01%) } . 148,093 ( 0.01%) fn visit_rvalue(&mut self, rvalue: &Rvalue<'tcx>, location: Location) { . self.super_rvalue(rvalue, location); 40,389 ( 0.00%) let rval_ty = rvalue.ty(self.body, self.tcx()); 161,556 ( 0.01%) self.sanitize_type(rvalue, rval_ty); . } . 243,840 ( 0.01%) fn visit_local_decl(&mut self, local: Local, local_decl: &LocalDecl<'tcx>) { . self.super_local_decl(local, local_decl); 121,920 ( 0.01%) self.sanitize_type(local_decl, local_decl.ty); . 73,152 ( 0.00%) if let Some(user_ty) = &local_decl.user_ty { 1 ( 0.00%) for (user_ty, span) in user_ty.projections_and_spans() { 5 ( 0.00%) let ty = if !local_decl.is_nonref_binding() { . // If we have a binding of the form `let ref x: T = ..` . // then remove the outermost reference so we can check the . // type annotation for the remaining type. . if let ty::Ref(_, rty, _) = local_decl.ty.kind() { . rty . } else { . bug!("{:?} with ref binding has wrong type {}", local, local_decl.ty); . } . } else { . local_decl.ty . }; . 8 ( 0.00%) if let Err(terr) = self.cx.relate_type_and_user_type( . ty, . ty::Variance::Invariant, . user_ty, 3 ( 0.00%) Locations::All(*span), . ConstraintCategory::TypeAnnotation, . ) { . span_mirbug!( . self, . local, . "bad user type on variable {:?}: {:?} != {:?} ({:?})", . local, . local_decl.ty, . local_decl.user_ty, . terr, . ); . } . } . } 195,072 ( 0.01%) } . 1,778 ( 0.00%) fn visit_body(&mut self, body: &Body<'tcx>) { 762 ( 0.00%) self.sanitize_type(&"return type", body.return_ty()); . for local_decl in &body.local_decls { 121,920 ( 0.01%) self.sanitize_type(local_decl, local_decl.ty); . } 508 ( 0.00%) if self.errors_reported { . return; . } . self.super_body(body); 2,032 ( 0.00%) } . } . . impl<'a, 'b, 'tcx> TypeVerifier<'a, 'b, 'tcx> { . fn new( . cx: &'a mut TypeChecker<'b, 'tcx>, . body: &'b Body<'tcx>, . promoted: &'b IndexVec>, . ) -> Self { 1,584 ( 0.00%) TypeVerifier { body, promoted, cx, last_span: body.span, errors_reported: false } . } . . fn tcx(&self) -> TyCtxt<'tcx> { 87,905 ( 0.01%) self.cx.infcx.tcx . } . 755,340 ( 0.04%) fn sanitize_type(&mut self, parent: &dyn fmt::Debug, ty: Ty<'tcx>) -> Ty<'tcx> { 151,068 ( 0.01%) if ty.has_escaping_bound_vars() || ty.references_error() { . span_mirbug_and_err!(self, parent, "bad type {:?}", ty) . } else { . ty . } 528,738 ( 0.03%) } . . /// Checks that the types internal to the `place` match up with . /// what would be expected. . fn sanitize_place( . &mut self, . place: &Place<'tcx>, . location: Location, . context: PlaceContext, . ) -> PlaceTy<'tcx> { . debug!("sanitize_place: {:?}", place); . 115,728 ( 0.01%) let mut place_ty = PlaceTy::from_ty(self.body.local_decls[place.local].ty); . 32,332 ( 0.00%) for elem in place.projection.iter() { 1,700 ( 0.00%) if place_ty.variant_index.is_none() { 1,643 ( 0.00%) if place_ty.ty.references_error() { . assert!(self.errors_reported); . return PlaceTy::from_ty(self.tcx().ty_error()); . } . } . place_ty = self.sanitize_projection(place_ty, elem, place, location); . } . 86,394 ( 0.01%) if let PlaceContext::NonMutatingUse(NonMutatingUseContext::Copy) = context { . let tcx = self.tcx(); . let trait_ref = ty::TraitRef { 6,300 ( 0.00%) def_id: tcx.require_lang_item(LangItem::Copy, Some(self.last_span)), 3,150 ( 0.00%) substs: tcx.mk_substs_trait(place_ty.ty, &[]), . }; . . // To have a `Copy` operand, the type `T` of the . // value must be `Copy`. Note that we prove that `T: Copy`, . // rather than using the `is_copy_modulo_regions` . // test. This is important because . // `is_copy_modulo_regions` ignores the resulting region . // obligations and assumes they pass. This can result in . // bounds from `Copy` impls being unsoundly ignored (e.g., . // #29149). Note that we decide to use `Copy` before knowing . // whether the bounds fully apply: in effect, the rule is . // that if a value of some type could implement `Copy`, then . // it must. 1,890 ( 0.00%) self.cx.prove_trait_ref( . trait_ref, . location.to_locations(), . ConstraintCategory::CopyBound, . ); . } . . place_ty . } -- line 595 ---------------------------------------- -- line 598 ---------------------------------------- . // Determine the constraints from the promoted MIR by running the type . // checker on the promoted MIR, then transfer the constraints back to . // the main MIR, changing the locations to the provided location. . . let parent_body = mem::replace(&mut self.body, promoted_body); . . // Use new sets of constraints and closure bounds so that we can . // modify their locations. 78 ( 0.00%) let all_facts = &mut None; . let mut constraints = Default::default(); . let mut closure_bounds = Default::default(); . let mut liveness_constraints = 156 ( 0.00%) LivenessValues::new(Rc::new(RegionValueElements::new(&promoted_body))); . // Don't try to add borrow_region facts for the promoted MIR . . let mut swap_constraints = |this: &mut Self| { 312 ( 0.00%) mem::swap(this.cx.borrowck_context.all_facts, all_facts); . mem::swap( 312 ( 0.00%) &mut this.cx.borrowck_context.constraints.outlives_constraints, . &mut constraints, . ); . mem::swap( 312 ( 0.00%) &mut this.cx.borrowck_context.constraints.closure_bounds_mapping, . &mut closure_bounds, . ); . mem::swap( 312 ( 0.00%) &mut this.cx.borrowck_context.constraints.liveness_constraints, . &mut liveness_constraints, . ); . }; . 78 ( 0.00%) swap_constraints(self); . 234 ( 0.00%) self.visit_body(&promoted_body); . 156 ( 0.00%) if !self.errors_reported { . // if verifier failed, don't do further checks to avoid ICEs 234 ( 0.00%) self.cx.typeck_mir(promoted_body); . } . 78 ( 0.00%) self.body = parent_body; . // Merge the outlives constraints back in, at the given location. 78 ( 0.00%) swap_constraints(self); . . let locations = location.to_locations(); . for constraint in constraints.outlives().iter() { . let mut constraint = constraint.clone(); . constraint.locations = locations; 644 ( 0.00%) if let ConstraintCategory::Return(_) . | ConstraintCategory::UseAsConst . | ConstraintCategory::UseAsStatic = constraint.category . { . // "Returning" from a promoted is an assignment to a . // temporary from the user's point of view. . constraint.category = ConstraintCategory::Boring; . } . self.cx.borrowck_context.constraints.outlives_constraints.push(constraint) . } . for region in liveness_constraints.rows() { . // If the region is live at at least one location in the promoted MIR, . // then add a liveness constraint to the main MIR for this region . // at the location provided as an argument to this method 258 ( 0.00%) if liveness_constraints.get_elements(region).next().is_some() { 12 ( 0.00%) self.cx . .borrowck_context . .constraints . .liveness_constraints . .add_element(region, location); . } . } . 78 ( 0.00%) if !closure_bounds.is_empty() { . let combined_bounds_mapping = . closure_bounds.into_iter().flat_map(|(_, value)| value).collect(); . let existing = self . .cx . .borrowck_context . .constraints . .closure_bounds_mapping . .insert(location, combined_bounds_mapping); . assert!(existing.is_none(), "Multiple promoteds/closures at the same location."); . } 312 ( 0.00%) } . . fn sanitize_projection( . &mut self, . base: PlaceTy<'tcx>, . pi: PlaceElem<'tcx>, . place: &Place<'tcx>, . location: Location, . ) -> PlaceTy<'tcx> { . debug!("sanitize_projection: {:?} {:?} {:?}", base, pi, place); . let tcx = self.tcx(); 1,700 ( 0.00%) let base_ty = base.ty; 8,500 ( 0.00%) match pi { . ProjectionElem::Deref => { 3,219 ( 0.00%) let deref_ty = base_ty.builtin_deref(true); . PlaceTy::from_ty(deref_ty.map(|t| t.ty).unwrap_or_else(|| { . span_mirbug_and_err!(self, place, "deref of non-pointer {:?}", base_ty) . })) . } 42 ( 0.00%) ProjectionElem::Index(i) => { 168 ( 0.00%) let index_ty = Place::from(i).ty(self.body, tcx).ty; 42 ( 0.00%) if index_ty != tcx.types.usize { . PlaceTy::from_ty(span_mirbug_and_err!(self, i, "index by non-usize {:?}", i)) . } else { 42 ( 0.00%) PlaceTy::from_ty(base_ty.builtin_index().unwrap_or_else(|| { . span_mirbug_and_err!(self, place, "index of non-array {:?}", base_ty) . })) . } . } . ProjectionElem::ConstantIndex { .. } => { . // consider verifying in-bounds . PlaceTy::from_ty(base_ty.builtin_index().unwrap_or_else(|| { . span_mirbug_and_err!(self, place, "index of non-array {:?}", base_ty) -- line 712 ---------------------------------------- -- line 720 ---------------------------------------- . } . ty::Slice(..) => { . assert!(from_end, "slice subslices should use from_end"); . base_ty . } . _ => span_mirbug_and_err!(self, place, "slice of non-array {:?}", base_ty), . }) . } 171 ( 0.00%) ProjectionElem::Downcast(maybe_name, index) => match base_ty.kind() { 171 ( 0.00%) ty::Adt(adt_def, _substs) if adt_def.is_enum() => { 171 ( 0.00%) if index.as_usize() >= adt_def.variants.len() { . PlaceTy::from_ty(span_mirbug_and_err!( . self, . place, . "cast to variant #{:?} but enum only has {:?}", . index, . adt_def.variants.len() . )) . } else { -- line 738 ---------------------------------------- -- line 752 ---------------------------------------- . ) . } else { . span_mirbug_and_err!(self, place, "can't downcast {:?}", base_ty) . }; . PlaceTy::from_ty(ty) . } . }, . ProjectionElem::Field(field, fty) => { 2,640 ( 0.00%) let fty = self.sanitize_type(place, fty); 7,392 ( 0.00%) let fty = self.cx.normalize(fty, location); . match self.field_ty(place, base, field, location) { . Ok(ty) => { 4,224 ( 0.00%) let ty = self.cx.normalize(ty, location); 1,056 ( 0.00%) if let Err(terr) = self.cx.eq_types( . ty, . fty, . location.to_locations(), . ConstraintCategory::Boring, . ) { . span_mirbug!( . self, . place, -- line 773 ---------------------------------------- -- line 800 ---------------------------------------- . &mut self, . parent: &dyn fmt::Debug, . base_ty: PlaceTy<'tcx>, . field: Field, . location: Location, . ) -> Result, FieldAccessError> { . let tcx = self.tcx(); . 528 ( 0.00%) let (variant, substs) = match base_ty { 228 ( 0.00%) PlaceTy { ty, variant_index: Some(variant_index) } => match *ty.kind() { 114 ( 0.00%) ty::Adt(adt_def, substs) => (&adt_def.variants[variant_index], substs), . ty::Generator(def_id, substs, _) => { . let mut variants = substs.as_generator().state_tys(def_id, tcx); . let mut variant = match variants.nth(variant_index.into()) { . Some(v) => v, . None => bug!( . "variant_index of generator out of range: {:?}/{:?}", . variant_index, . substs.as_generator().state_tys(def_id, tcx).count() -- line 818 ---------------------------------------- -- line 820 ---------------------------------------- . }; . return match variant.nth(field.index()) { . Some(ty) => Ok(ty), . None => Err(FieldAccessError::OutOfRange { field_count: variant.count() }), . }; . } . _ => bug!("can't have downcast of non-adt non-generator type"), . }, 1,884 ( 0.00%) PlaceTy { ty, variant_index: None } => match *ty.kind() { 1,020 ( 0.00%) ty::Adt(adt_def, substs) if !adt_def.is_enum() => { . (&adt_def.variants[VariantIdx::new(0)], substs) . } 30 ( 0.00%) ty::Closure(_, substs) => { 270 ( 0.00%) return match substs . .as_closure() . .tupled_upvars_ty() . .tuple_element_ty(field.index()) . { . Some(ty) => Ok(ty), . None => Err(FieldAccessError::OutOfRange { . field_count: substs.as_closure().upvar_tys().count(), . }), -- line 841 ---------------------------------------- -- line 846 ---------------------------------------- . // accessible without a variant index. . return match substs.as_generator().prefix_tys().nth(field.index()) { . Some(ty) => Ok(ty), . None => Err(FieldAccessError::OutOfRange { . field_count: substs.as_generator().prefix_tys().count(), . }), . }; . } 186 ( 0.00%) ty::Tuple(tys) => { 186 ( 0.00%) return match tys.get(field.index()) { 744 ( 0.00%) Some(&ty) => Ok(ty.expect_ty()), . None => Err(FieldAccessError::OutOfRange { field_count: tys.len() }), . }; . } . _ => { . return Ok(span_mirbug_and_err!( . self, . parent, . "can't project out of {:?}", . base_ty . )); . } . }, . }; . 312 ( 0.00%) if let Some(field) = variant.fields.get(field.index()) { 3,120 ( 0.00%) Ok(self.cx.normalize(field.ty(tcx, substs), location)) . } else { . Err(FieldAccessError::OutOfRange { field_count: variant.fields.len() }) . } . } . } . . /// The MIR type checker. Visits the MIR and enforces all the . /// constraints needed for it to be valid and well-typed. Along the -- line 880 ---------------------------------------- -- line 943 ---------------------------------------- . FxHashMap>, . . crate universe_causes: FxHashMap>, . . crate type_tests: Vec>, . } . . impl<'tcx> MirTypeckRegionConstraints<'tcx> { 1,560 ( 0.00%) fn placeholder_region( . &mut self, . infcx: &InferCtxt<'_, 'tcx>, . placeholder: ty::PlaceholderRegion, . ) -> ty::Region<'tcx> { . let placeholder_index = self.placeholder_indices.insert(placeholder); 312 ( 0.00%) match self.placeholder_index_to_region.get(placeholder_index) { 176 ( 0.00%) Some(&v) => v, . None => { 272 ( 0.00%) let origin = NllRegionVariableOrigin::Placeholder(placeholder); 612 ( 0.00%) let region = infcx.next_nll_region_var_in_universe(origin, placeholder.universe); . self.placeholder_index_to_region.push(region); . region . } . } 1,248 ( 0.00%) } . } . . /// The `Locations` type summarizes *where* region constraints are . /// required to hold. Normally, this is at a particular point which . /// created the obligation, but for constraints that the user gave, we . /// want the constraint to hold at all points. 12,302 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)] . pub enum Locations { . /// Indicates that a type constraint should always be true. This . /// is particularly important in the new borrowck analysis for . /// things like the type of the return slot. Consider this . /// example: . /// . /// ``` . /// fn foo<'a>(x: &'a u32) -> &'a u32 { -- line 981 ---------------------------------------- -- line 1020 ---------------------------------------- . match self { . Locations::All(_) => None, . Locations::Single(from_location) => Some(*from_location), . } . } . . /// Gets a span representing the location. . pub fn span(&self, body: &Body<'_>) -> Span { 40 ( 0.00%) match self { 10 ( 0.00%) Locations::All(span) => *span, 50 ( 0.00%) Locations::Single(l) => body.source_info(*l).span, . } . } . } . . impl<'a, 'tcx> TypeChecker<'a, 'tcx> { . fn new( . infcx: &'a InferCtxt<'a, 'tcx>, . body: &'a Body<'tcx>, . param_env: ty::ParamEnv<'tcx>, . region_bound_pairs: &'a RegionBoundPairs<'tcx>, . implicit_region_bound: ty::Region<'tcx>, . borrowck_context: &'a mut BorrowCheckContext<'a, 'tcx>, . ) -> Self { 2,288 ( 0.00%) let mut checker = Self { . infcx, . last_span: DUMMY_SP, . body, 176 ( 0.00%) user_type_annotations: &body.user_type_annotations, . param_env, . region_bound_pairs, . implicit_region_bound, . borrowck_context, . reported_errors: Default::default(), . }; . checker.check_user_type_annotations(); . checker . } . . fn unsized_feature_enabled(&self) -> bool { 37,898 ( 0.00%) let features = self.tcx().features(); 75,796 ( 0.00%) features.unsized_locals || features.unsized_fn_params . } . . /// Equate the inferred type and the annotated type for user type annotations . fn check_user_type_annotations(&mut self) { . debug!( . "check_user_type_annotations: user_type_annotations={:?}", . self.user_type_annotations . ); 121 ( 0.00%) for user_annotation in self.user_type_annotations { 242 ( 0.00%) let CanonicalUserTypeAnnotation { span, ref user_ty, inferred_ty } = *user_annotation; 726 ( 0.00%) let inferred_ty = self.normalize(inferred_ty, Locations::All(span)); 242 ( 0.00%) let annotation = self.instantiate_canonical_with_fresh_inference_vars(span, user_ty); 242 ( 0.00%) match annotation { 28 ( 0.00%) UserType::Ty(mut ty) => { 84 ( 0.00%) ty = self.normalize(ty, Locations::All(span)); . 28 ( 0.00%) if let Err(terr) = self.eq_types( . ty, 14 ( 0.00%) inferred_ty, . Locations::All(span), . ConstraintCategory::BoringNoLocation, . ) { . span_mirbug!( . self, . user_annotation, . "bad user type ({:?} = {:?}): {:?}", . ty, . inferred_ty, . terr . ); . } . 98 ( 0.00%) self.prove_predicate( 42 ( 0.00%) ty::Binder::dummy(ty::PredicateKind::WellFormed(inferred_ty.into())) . .to_predicate(self.tcx()), 28 ( 0.00%) Locations::All(span), . ConstraintCategory::TypeAnnotation, . ); . } 856 ( 0.00%) UserType::TypeOf(def_id, user_substs) => { 963 ( 0.00%) if let Err(terr) = self.fully_perform_op( 214 ( 0.00%) Locations::All(span), . ConstraintCategory::BoringNoLocation, 535 ( 0.00%) self.param_env.and(type_op::ascribe_user_type::AscribeUserType::new( 107 ( 0.00%) inferred_ty, . def_id, 214 ( 0.00%) user_substs, . )), . ) { . span_mirbug!( . self, . user_annotation, . "bad user type AscribeUserType({:?}, {:?} {:?}, type_of={:?}): {:?}", . inferred_ty, . def_id, -- line 1116 ---------------------------------------- -- line 1128 ---------------------------------------- . fn push_region_constraints( . &mut self, . locations: Locations, . category: ConstraintCategory, . data: &QueryRegionConstraints<'tcx>, . ) { . debug!("constraints generated: {:#?}", data); . 956 ( 0.00%) constraint_conversion::ConstraintConversion::new( 5 ( 0.00%) self.infcx, 1,893 ( 0.00%) self.borrowck_context.universal_regions, 949 ( 0.00%) self.region_bound_pairs, . Some(self.implicit_region_bound), 124 ( 0.00%) self.param_env, . locations, . category, 949 ( 0.00%) &mut self.borrowck_context.constraints, . ) . .convert_all(data); . } . . /// Try to relate `sub <: sup` . fn sub_types( . &mut self, . sub: Ty<'tcx>, . sup: Ty<'tcx>, . locations: Locations, . category: ConstraintCategory, . ) -> Fallible<()> { . // Use this order of parameters because the sup type is usually the . // "expected" type in diagnostics. 254,211 ( 0.01%) self.relate_types(sup, ty::Variance::Contravariant, sub, locations, category) . } . . #[instrument(skip(self, category), level = "debug")] . fn eq_types( . &mut self, . expected: Ty<'tcx>, . found: Ty<'tcx>, . locations: Locations, . category: ConstraintCategory, . ) -> Fallible<()> { 11,919 ( 0.00%) self.relate_types(expected, ty::Variance::Invariant, found, locations, category) . } . 1,836 ( 0.00%) #[instrument(skip(self), level = "debug")] . fn relate_type_and_user_type( . &mut self, . a: Ty<'tcx>, . v: ty::Variance, . user_ty: &UserTypeProjection, . locations: Locations, . category: ConstraintCategory, . ) -> Fallible<()> { 436 ( 0.00%) let annotated_type = self.user_type_annotations[user_ty.base].inferred_ty; . let mut curr_projected_ty = PlaceTy::from_ty(annotated_type); . 327 ( 0.00%) let tcx = self.infcx.tcx; . . for proj in &user_ty.projs { . let projected_ty = curr_projected_ty.projection_ty_core( . tcx, . self.param_env, . proj, . |this, field, &()| { . let ty = this.field_ty(tcx, field); -- line 1193 ---------------------------------------- -- line 1197 ---------------------------------------- . curr_projected_ty = projected_ty; . } . debug!( . "user_ty base: {:?} freshened: {:?} projs: {:?} yields: {:?}", . user_ty.base, annotated_type, user_ty.projs, curr_projected_ty . ); . . let ty = curr_projected_ty.ty; 1,747 ( 0.00%) self.relate_types(ty, v.xform(ty::Variance::Contravariant), a, locations, category)?; . . Ok(()) . } . . /// Equates a type `anon_ty` that may contain opaque types whose . /// values are to be inferred by the MIR. . /// . /// The type `revealed_ty` contains the same type as `anon_ty`, but with the -- line 1213 ---------------------------------------- -- line 1231 ---------------------------------------- . /// . /// In terms of our function parameters: . /// . /// * `anon_ty` would be `Box>` where `Foo` is an opaque type . /// scoped to this function (note that it is parameterized by the . /// generics of `foo`). Note that `anon_ty` is not just the opaque type, . /// but the entire return type (which may contain opaque types within it). . /// * `revealed_ty` would be `Box<(T, u32)>` 3,762 ( 0.00%) #[instrument(skip(self), level = "debug")] . fn eq_opaque_type_and_type( . &mut self, . revealed_ty: Ty<'tcx>, . anon_ty: Ty<'tcx>, . locations: Locations, . category: ConstraintCategory, . ) -> Fallible<()> { . // Fast path for the common case. 198 ( 0.00%) if !anon_ty.has_opaque_types() { 396 ( 0.00%) if let Err(terr) = self.eq_types(anon_ty, revealed_ty, locations, category) { . span_mirbug!( . self, . locations, . "eq_opaque_type_and_type: `{:?}=={:?}` failed with `{:?}`", . revealed_ty, . anon_ty, . terr . ); -- line 1257 ---------------------------------------- -- line 1328 ---------------------------------------- . || "opaque_type_map".to_string(), . ), . )?; . } . Ok(()) . } . . fn tcx(&self) -> TyCtxt<'tcx> { 232,928 ( 0.01%) self.infcx.tcx . } . . #[instrument(skip(self, body, location), level = "debug")] . fn check_stmt(&mut self, body: &Body<'tcx>, stmt: &Statement<'tcx>, location: Location) { . let tcx = self.tcx(); 74,628 ( 0.00%) match stmt.kind { 13,463 ( 0.00%) StatementKind::Assign(box (ref place, ref rv)) => { . // Assignments to temporaries are not "interesting"; . // they are not caused by the user, but rather artifacts . // of lowering. Assignments to other sorts of places *are* interesting . // though. 53,742 ( 0.00%) let category = match place.as_local() { . Some(RETURN_PLACE) => { 612 ( 0.00%) let defining_ty = &self.borrowck_context.universal_regions.defining_ty; 306 ( 0.00%) if defining_ty.is_const() { 64 ( 0.00%) if tcx.is_static(defining_ty.def_id()) { . ConstraintCategory::UseAsStatic . } else { . ConstraintCategory::UseAsConst . } . } else { . ConstraintCategory::Return(ReturnConstraint::Normal) . } . } . Some(l) 14,566 ( 0.00%) if matches!( 26,570 ( 0.00%) body.local_decls[l].local_info, . Some(box LocalInfo::AggregateTemp) . ) => . { . ConstraintCategory::Usage . } . Some(l) if !body.local_decls[l].is_user_variable() => { . ConstraintCategory::Boring . } -- line 1371 ---------------------------------------- -- line 1373 ---------------------------------------- . }; . debug!( . "assignment category: {:?} {:?}", . category, . place.as_local().map(|l| &body.local_decls[l]) . ); . . let place_ty = place.ty(body, tcx).ty; 161,556 ( 0.01%) let place_ty = self.normalize(place_ty, location); 13,463 ( 0.00%) let rv_ty = rv.ty(body, tcx); 80,778 ( 0.00%) let rv_ty = self.normalize(rv_ty, location); 26,926 ( 0.00%) if let Err(terr) = . self.sub_types(rv_ty, place_ty, location.to_locations(), category) . { . span_mirbug!( . self, . stmt, . "bad assignment ({:?} = {:?}): {:?}", . place_ty, . rv_ty, . terr . ); . } . 5,223 ( 0.00%) if let Some(annotation_index) = self.rvalue_user_ty(rv) { . if let Err(terr) = self.relate_type_and_user_type( . rv_ty, . ty::Variance::Invariant, . &UserTypeProjection { base: annotation_index, projs: vec![] }, . location.to_locations(), . ConstraintCategory::Boring, . ) { . let annotation = &self.user_type_annotations[annotation_index]; -- line 1405 ---------------------------------------- -- line 1409 ---------------------------------------- . "bad user type on rvalue ({:?} = {:?}): {:?}", . annotation, . rv_ty, . terr . ); . } . } . 94,241 ( 0.01%) self.check_rvalue(body, rv, location); 13,463 ( 0.00%) if !self.unsized_feature_enabled() { . let trait_ref = ty::TraitRef { 148,093 ( 0.01%) def_id: tcx.require_lang_item(LangItem::Sized, Some(self.last_span)), 67,315 ( 0.00%) substs: tcx.mk_substs_trait(place_ty, &[]), . }; 40,389 ( 0.00%) self.prove_trait_ref( . trait_ref, . location.to_locations(), . ConstraintCategory::SizedBound, . ); . } . } . StatementKind::SetDiscriminant { ref place, variant_index } => { . let place_type = place.ty(body, tcx).ty; -- line 1431 ---------------------------------------- -- line 1444 ---------------------------------------- . span_bug!( . stmt.source_info.span, . "bad set discriminant ({:?} = {:?}): value of of range", . place, . variant_index . ); . }; . } 1 ( 0.00%) StatementKind::AscribeUserType(box (ref place, ref projection), variance) => { 1 ( 0.00%) let place_ty = place.ty(body, tcx).ty; . if let Err(terr) = self.relate_type_and_user_type( . place_ty, . variance, . projection, 4 ( 0.00%) Locations::All(stmt.source_info.span), . ConstraintCategory::TypeAnnotation, . ) { . let annotation = &self.user_type_annotations[projection.base]; . span_mirbug!( . self, . stmt, . "bad type assert ({:?} <: {:?} with projections {:?}): {:?}", . place_ty, -- line 1466 ---------------------------------------- -- line 1488 ---------------------------------------- . #[instrument(skip(self, body, term_location), level = "debug")] . fn check_terminator( . &mut self, . body: &Body<'tcx>, . term: &Terminator<'tcx>, . term_location: Location, . ) { . let tcx = self.tcx(); 11,630 ( 0.00%) match term.kind { . TerminatorKind::Goto { .. } . | TerminatorKind::Resume . | TerminatorKind::Abort . | TerminatorKind::Return . | TerminatorKind::GeneratorDrop . | TerminatorKind::Unreachable . | TerminatorKind::Drop { .. } . | TerminatorKind::FalseEdge { .. } -- line 1504 ---------------------------------------- -- line 1520 ---------------------------------------- . term, . "bad DropAndReplace ({:?} = {:?}): {:?}", . place_ty, . rv_ty, . terr . ); . } . } 1,168 ( 0.00%) TerminatorKind::SwitchInt { ref discr, switch_ty, .. } => { 876 ( 0.00%) self.check_operand(discr, term_location); . 292 ( 0.00%) let discr_ty = discr.ty(body, tcx); 584 ( 0.00%) if let Err(terr) = self.sub_types( . discr_ty, . switch_ty, . term_location.to_locations(), . ConstraintCategory::Assignment, . ) { . span_mirbug!( . self, . term, . "bad SwitchInt ({:?} on {:?}): {:?}", . switch_ty, . discr_ty, . terr . ); . } 394 ( 0.00%) if !switch_ty.is_integral() && !switch_ty.is_char() && !switch_ty.is_bool() { . span_mirbug!(self, term, "bad SwitchInt discr ty {:?}", switch_ty); . } . // FIXME: check the values . } 3,342 ( 0.00%) TerminatorKind::Call { ref func, ref args, ref destination, from_hir_call, .. } => { 2,785 ( 0.00%) self.check_operand(func, term_location); . for arg in args { 4,400 ( 0.00%) self.check_operand(arg, term_location); . } . 557 ( 0.00%) let func_ty = func.ty(body, tcx); . debug!("check_terminator: call, func_ty={:?}", func_ty); 2,228 ( 0.00%) let sig = match func_ty.kind() { 2,228 ( 0.00%) ty::FnDef(..) | ty::FnPtr(_) => func_ty.fn_sig(tcx), . _ => { . span_mirbug!(self, term, "call to non-function {:?}", func_ty); . return; . } . }; 5,570 ( 0.00%) let (sig, map) = self.infcx.replace_bound_vars_with_fresh_vars( 1,671 ( 0.00%) term.source_info.span, . LateBoundRegionConversionTime::FnCall, . sig, . ); 1,114 ( 0.00%) let sig = self.normalize(sig, term_location); 2,228 ( 0.00%) self.check_call_dest(body, term, &sig, destination, term_location); . . self.prove_predicates( 557 ( 0.00%) sig.inputs_and_output . .iter() 2,874 ( 0.00%) .map(|ty| ty::Binder::dummy(ty::PredicateKind::WellFormed(ty.into()))), . term_location.to_locations(), . ConstraintCategory::Boring, . ); . . // The ordinary liveness rules will ensure that all . // regions in the type of the callee are live here. We . // then further constrain the late-bound regions that . // were instantiated at the call site to be live as . // well. The resulting is that all the input (and . // output) types in the signature must be live, since . // all the inputs that fed into it were live. 4,632 ( 0.00%) for &late_bound_region in map.values() { . let region_vid = 1,290 ( 0.00%) self.borrowck_context.universal_regions.to_region_vid(late_bound_region); 1,290 ( 0.00%) self.borrowck_context . .constraints . .liveness_constraints . .add_element(region_vid, term_location); . } . 1,114 ( 0.00%) self.check_call_inputs(body, term, &sig, args, term_location, from_hir_call); . } 162 ( 0.00%) TerminatorKind::Assert { ref cond, ref msg, .. } => { 243 ( 0.00%) self.check_operand(cond, term_location); . 162 ( 0.00%) let cond_ty = cond.ty(body, tcx); 81 ( 0.00%) if cond_ty != tcx.types.bool { . span_mirbug!(self, term, "bad Assert ({:?}, not bool", cond_ty); . } . 294 ( 0.00%) if let AssertKind::BoundsCheck { ref len, ref index } = *msg { 33 ( 0.00%) if len.ty(body, tcx) != tcx.types.usize { . span_mirbug!(self, len, "bounds-check length non-usize {:?}", len) . } 33 ( 0.00%) if index.ty(body, tcx) != tcx.types.usize { . span_mirbug!(self, index, "bounds-check index non-usize {:?}", index) . } . } . } . TerminatorKind::Yield { ref value, .. } => { . self.check_operand(value, term_location); . . let value_ty = value.ty(body, tcx); -- line 1621 ---------------------------------------- -- line 1647 ---------------------------------------- . &mut self, . body: &Body<'tcx>, . term: &Terminator<'tcx>, . sig: &ty::FnSig<'tcx>, . destination: &Option<(Place<'tcx>, BasicBlock)>, . term_location: Location, . ) { . let tcx = self.tcx(); 2,228 ( 0.00%) match *destination { . Some((ref dest, _target_block)) => { . let dest_ty = dest.ty(body, tcx).ty; 3,324 ( 0.00%) let dest_ty = self.normalize(dest_ty, term_location); 2,770 ( 0.00%) let category = match dest.as_local() { . Some(RETURN_PLACE) => { 966 ( 0.00%) if let BorrowCheckContext { . universal_regions: . UniversalRegions { . defining_ty: . DefiningTy::Const(def_id, _) . | DefiningTy::InlineConst(def_id, _), . .. . }, . .. -- line 1669 ---------------------------------------- -- line 1673 ---------------------------------------- . ConstraintCategory::UseAsStatic . } else { . ConstraintCategory::UseAsConst . } . } else { . ConstraintCategory::Return(ReturnConstraint::Normal) . } . } 288 ( 0.00%) Some(l) if !body.local_decls[l].is_user_variable() => { . ConstraintCategory::Boring . } . _ => ConstraintCategory::Assignment, . }; . . let locations = term_location.to_locations(); . 3,878 ( 0.00%) if let Err(terr) = self.sub_types(sig.output(), dest_ty, locations, category) { . span_mirbug!( . self, . term, . "call dest mismatch ({:?} <- {:?}): {:?}", . dest_ty, . sig.output(), . terr . ); . } . . // When `unsized_fn_params` and `unsized_locals` are both not enabled, . // this check is done at `check_local`. 554 ( 0.00%) if self.unsized_feature_enabled() { . let span = term.source_info.span; . self.ensure_place_sized(dest_ty, span); . } . } . None => { 3 ( 0.00%) if !self . .tcx() 9 ( 0.00%) .conservative_is_privately_uninhabited(self.param_env.and(sig.output())) . { . span_mirbug!(self, term, "call to converging function {:?} w/o dest", sig); . } . } . } . } . . fn check_call_inputs( -- line 1718 ---------------------------------------- -- line 1720 ---------------------------------------- . body: &Body<'tcx>, . term: &Terminator<'tcx>, . sig: &ty::FnSig<'tcx>, . args: &[Operand<'tcx>], . term_location: Location, . from_hir_call: bool, . ) { . debug!("check_call_inputs({:?}, {:?})", sig, args); 3,899 ( 0.00%) if args.len() < sig.inputs().len() || (args.len() > sig.inputs().len() && !sig.c_variadic) { . span_mirbug!(self, term, "call to {:?} with wrong # of args", sig); . } 2,874 ( 0.00%) for (n, (fn_arg, op_arg)) in iter::zip(sig.inputs(), args).enumerate() { . let op_arg_ty = op_arg.ty(body, self.tcx()); 3,520 ( 0.00%) let op_arg_ty = self.normalize(op_arg_ty, term_location); . let category = if from_hir_call { . ConstraintCategory::CallArgument . } else { . ConstraintCategory::Boring . }; 1,760 ( 0.00%) if let Err(terr) = 1,760 ( 0.00%) self.sub_types(op_arg_ty, fn_arg, term_location.to_locations(), category) . { . span_mirbug!( . self, . term, . "bad arg #{:?} ({:?} <- {:?}): {:?}", . n, . fn_arg, . op_arg_ty, . terr . ); . } . } . } . . fn check_iscleanup(&mut self, body: &Body<'tcx>, block_data: &BasicBlockData<'tcx>) { 1,032 ( 0.00%) let is_cleanup = block_data.is_cleanup; 6,978 ( 0.00%) self.last_span = block_data.terminator().source_info.span; 13,956 ( 0.00%) match block_data.terminator().kind { 634 ( 0.00%) TerminatorKind::Goto { target } => { 2,536 ( 0.00%) self.assert_iscleanup(body, block_data, target, is_cleanup) . } 292 ( 0.00%) TerminatorKind::SwitchInt { ref targets, .. } => { 292 ( 0.00%) for target in targets.all_targets() { 4,896 ( 0.00%) self.assert_iscleanup(body, block_data, *target, is_cleanup); . } . } . TerminatorKind::Resume => { 132 ( 0.00%) if !is_cleanup { . span_mirbug!(self, block_data, "resume on non-cleanup block!") . } . } . TerminatorKind::Abort => { . if !is_cleanup { . span_mirbug!(self, block_data, "abort on non-cleanup block!") . } . } . TerminatorKind::Return => { 254 ( 0.00%) if is_cleanup { . span_mirbug!(self, block_data, "return on cleanup block") . } . } . TerminatorKind::GeneratorDrop { .. } => { . if is_cleanup { . span_mirbug!(self, block_data, "generator_drop in cleanup block") . } . } -- line 1786 ---------------------------------------- -- line 1792 ---------------------------------------- . if let Some(drop) = drop { . self.assert_iscleanup(body, block_data, drop, is_cleanup); . } . } . TerminatorKind::Unreachable => {} . TerminatorKind::Drop { target, unwind, .. } . | TerminatorKind::DropAndReplace { target, unwind, .. } . | TerminatorKind::Assert { target, cleanup: unwind, .. } => { 405 ( 0.00%) self.assert_iscleanup(body, block_data, target, is_cleanup); 162 ( 0.00%) if let Some(unwind) = unwind { 81 ( 0.00%) if is_cleanup { . span_mirbug!(self, block_data, "unwind on cleanup block") . } . self.assert_iscleanup(body, block_data, unwind, true); . } . } 557 ( 0.00%) TerminatorKind::Call { ref destination, cleanup, .. } => { 2,776 ( 0.00%) if let &Some((_, target)) = destination { 1,108 ( 0.00%) self.assert_iscleanup(body, block_data, target, is_cleanup); . } 1,671 ( 0.00%) if let Some(cleanup) = cleanup { 557 ( 0.00%) if is_cleanup { . span_mirbug!(self, block_data, "cleanup on cleanup block") . } . self.assert_iscleanup(body, block_data, cleanup, true); . } . } 686 ( 0.00%) TerminatorKind::FalseEdge { real_target, imaginary_target } => { 2,058 ( 0.00%) self.assert_iscleanup(body, block_data, real_target, is_cleanup); 1,715 ( 0.00%) self.assert_iscleanup(body, block_data, imaginary_target, is_cleanup); . } 16 ( 0.00%) TerminatorKind::FalseUnwind { real_target, unwind } => { 40 ( 0.00%) self.assert_iscleanup(body, block_data, real_target, is_cleanup); 16 ( 0.00%) if let Some(unwind) = unwind { 8 ( 0.00%) if is_cleanup { . span_mirbug!(self, block_data, "cleanup in cleanup block via false unwind"); . } . self.assert_iscleanup(body, block_data, unwind, true); . } . } . TerminatorKind::InlineAsm { destination, cleanup, .. } => { . if let Some(target) = destination { . self.assert_iscleanup(body, block_data, target, is_cleanup); -- line 1834 ---------------------------------------- -- line 1838 ---------------------------------------- . span_mirbug!(self, block_data, "cleanup on cleanup block") . } . self.assert_iscleanup(body, block_data, cleanup, true); . } . } . } . } . 30,825 ( 0.00%) fn assert_iscleanup( . &mut self, . body: &Body<'tcx>, . ctxt: &dyn fmt::Debug, . bb: BasicBlock, . iscleanuppad: bool, . ) { 20,550 ( 0.00%) if body[bb].is_cleanup != iscleanuppad { . span_mirbug!(self, ctxt, "cleanuppad mismatch: {:?} should be {:?}", bb, iscleanuppad); . } 17,125 ( 0.00%) } . . fn check_local(&mut self, body: &Body<'tcx>, local: Local, local_decl: &LocalDecl<'tcx>) { . match body.local_kind(local) { . LocalKind::ReturnPointer | LocalKind::Arg => { . // return values of normal functions are required to be . // sized by typeck, but return values of ADT constructors are . // not because we don't include a `Self: Sized` bounds on them. . // -- line 1864 ---------------------------------------- -- line 1866 ---------------------------------------- . // - maybe we should make that a warning. . return; . } . LocalKind::Var | LocalKind::Temp => {} . } . . // When `unsized_fn_params` or `unsized_locals` is enabled, only function calls . // and nullary ops are checked in `check_call_dest`. 23,881 ( 0.00%) if !self.unsized_feature_enabled() { 47,762 ( 0.00%) let span = local_decl.source_info.span; 23,881 ( 0.00%) let ty = local_decl.ty; 47,762 ( 0.00%) self.ensure_place_sized(ty, span); . } . } . 214,929 ( 0.01%) fn ensure_place_sized(&mut self, ty: Ty<'tcx>, span: Span) { . let tcx = self.tcx(); . . // Erase the regions from `ty` to get a global type. The . // `Sized` bound in no way depends on precise regions, so this . // shouldn't affect `is_sized`. . let erased_ty = tcx.erase_regions(ty); 143,286 ( 0.01%) if !erased_ty.is_sized(tcx.at(span), self.param_env) { . // in current MIR construction, all non-control-flow rvalue . // expressions evaluate through `as_temp` or `into` a return . // slot or local, so to find all unsized rvalues it is enough . // to check all temps, return slots and locals. . if self.reported_errors.replace((ty, span)).is_none() { . let mut diag = struct_span_err!( . self.tcx().sess, . span, -- line 1896 ---------------------------------------- -- line 1901 ---------------------------------------- . ); . . // While this is located in `nll::typeck` this error is not . // an NLL error, it's a required check to prevent creation . // of unsized rvalues in a call expression. . diag.emit(); . } . } 143,286 ( 0.01%) } . . fn aggregate_field_ty( . &mut self, . ak: &AggregateKind<'tcx>, . field_index: usize, . location: Location, . ) -> Result, FieldAccessError> { . let tcx = self.tcx(); . 29,240 ( 0.00%) match *ak { 1,449 ( 0.00%) AggregateKind::Adt(adt_did, variant_index, substs, _, active_field_index) => { . let def = tcx.adt_def(adt_did); . let variant = &def.variants[variant_index]; . let adj_field_index = active_field_index.unwrap_or(field_index); 161 ( 0.00%) if let Some(field) = variant.fields.get(adj_field_index) { 1,449 ( 0.00%) Ok(self.normalize(field.ty(tcx, substs), location)) . } else { . Err(FieldAccessError::OutOfRange { field_count: variant.fields.len() }) . } . } 10 ( 0.00%) AggregateKind::Closure(_, substs) => { 120 ( 0.00%) match substs.as_closure().upvar_tys().nth(field_index) { . Some(ty) => Ok(ty), . None => Err(FieldAccessError::OutOfRange { . field_count: substs.as_closure().upvar_tys().count(), . }), . } . } . AggregateKind::Generator(_, substs, _) => { . // It doesn't make sense to look at a field beyond the prefix; -- line 1939 ---------------------------------------- -- line 1941 ---------------------------------------- . // aggregate rvalues. . match substs.as_generator().prefix_tys().nth(field_index) { . Some(ty) => Ok(ty), . None => Err(FieldAccessError::OutOfRange { . field_count: substs.as_generator().prefix_tys().count(), . }), . } . } 5,677 ( 0.00%) AggregateKind::Array(ty) => Ok(ty), . AggregateKind::Tuple => { . unreachable!("This should have been covered in check_rvalues"); . } . } . } . 177,772 ( 0.01%) fn check_operand(&mut self, op: &Operand<'tcx>, location: Location) { 50,792 ( 0.00%) if let Operand::Constant(constant) = op { 37,464 ( 0.00%) let maybe_uneval = match constant.literal { 37,464 ( 0.00%) ConstantKind::Ty(ct) => match ct.val { 89 ( 0.00%) ty::ConstKind::Unevaluated(uv) => Some(uv), . _ => None, . }, . _ => None, . }; 178 ( 0.00%) if let Some(uv) = maybe_uneval { 89 ( 0.00%) if uv.promoted.is_none() { . let tcx = self.tcx(); 77 ( 0.00%) let def_id = uv.def.def_id_for_type_of(); 44 ( 0.00%) if tcx.def_kind(def_id) == DefKind::InlineConst { . let predicates = self.prove_closure_bounds( . tcx, . def_id.expect_local(), . uv.substs, . location, . ); . self.normalize_and_prove_instantiated_predicates( . def_id, . predicates, . location.to_locations(), . ); . } . } . } . } 203,168 ( 0.01%) } . 175,019 ( 0.01%) fn check_rvalue(&mut self, body: &Body<'tcx>, rvalue: &Rvalue<'tcx>, location: Location) { . let tcx = self.tcx(); . 67,795 ( 0.00%) match rvalue { . Rvalue::Aggregate(ak, ops) => { . for op in ops { 110,455 ( 0.01%) self.check_operand(op, location); . } 21,928 ( 0.00%) self.check_aggregate_rvalue(&body, rvalue, ak, ops, location) . } . . Rvalue::Repeat(operand, len) => { . self.check_operand(operand, location); . . // If the length cannot be evaluated we must assume that the length can be larger . // than 1. . // If the length is larger than 1, the repeat expression will need to copy the -- line 2003 ---------------------------------------- -- line 2071 ---------------------------------------- . . self.prove_trait_ref( . trait_ref, . location.to_locations(), . ConstraintCategory::SizedBound, . ); . } . 228 ( 0.00%) Rvalue::Cast(cast_kind, op, ty) => { 228 ( 0.00%) self.check_operand(op, location); . 481 ( 0.00%) match cast_kind { . CastKind::Pointer(PointerCast::ReifyFnPointer) => { 32 ( 0.00%) let fn_sig = op.ty(body, tcx).fn_sig(tcx); . . // The type that we see in the fcx is like . // `foo::<'a, 'b>`, where `foo` is the path to a . // function definition. When we extract the . // signature, it comes from the `fn_sig` query, . // and hence may contain unnormalized results. 44 ( 0.00%) let fn_sig = self.normalize(fn_sig, location); . 4 ( 0.00%) let ty_fn_ptr_from = tcx.mk_fn_ptr(fn_sig); . 8 ( 0.00%) if let Err(terr) = self.eq_types( 4 ( 0.00%) ty, . ty_fn_ptr_from, . location.to_locations(), . ConstraintCategory::Cast, . ) { . span_mirbug!( . self, . rvalue, . "equating {:?} with {:?} yields {:?}", -- line 2104 ---------------------------------------- -- line 2105 ---------------------------------------- . ty_fn_ptr_from, . ty, . terr . ); . } . } . . CastKind::Pointer(PointerCast::ClosureFnPointer(unsafety)) => { 6 ( 0.00%) let sig = match op.ty(body, tcx).kind() { 5 ( 0.00%) ty::Closure(_, substs) => substs.as_closure().sig(), . _ => bug!(), . }; 11 ( 0.00%) let ty_fn_ptr_from = tcx.mk_fn_ptr(tcx.signature_unclosure(sig, *unsafety)); . 2 ( 0.00%) if let Err(terr) = self.eq_types( 1 ( 0.00%) ty, . ty_fn_ptr_from, . location.to_locations(), . ConstraintCategory::Cast, . ) { . span_mirbug!( . self, . rvalue, . "equating {:?} with {:?} yields {:?}", -- line 2128 ---------------------------------------- -- line 2158 ---------------------------------------- . ty_fn_ptr_from, . ty, . terr . ); . } . } . . CastKind::Pointer(PointerCast::Unsize) => { 78 ( 0.00%) let &ty = ty; . let trait_ref = ty::TraitRef { 286 ( 0.00%) def_id: tcx 26 ( 0.00%) .require_lang_item(LangItem::CoerceUnsized, Some(self.last_span)), 312 ( 0.00%) substs: tcx.mk_substs_trait(op.ty(body, tcx), &[ty.into()]), . }; . 234 ( 0.00%) self.prove_trait_ref( . trait_ref, . location.to_locations(), . ConstraintCategory::Cast, . ); . } . . CastKind::Pointer(PointerCast::MutToConstPointer) => { . let ty_from = match op.ty(body, tcx).kind() { -- line 2181 ---------------------------------------- -- line 2290 ---------------------------------------- . ty_elem, . ty_to, . terr . ) . } . } . . CastKind::Misc => { 26 ( 0.00%) let ty_from = op.ty(body, tcx); 104 ( 0.00%) let cast_ty_from = CastTy::from_ty(ty_from); 78 ( 0.00%) let cast_ty_to = CastTy::from_ty(ty); 338 ( 0.00%) match (cast_ty_from, cast_ty_to) { . (None, _) . | (_, None | Some(CastTy::FnPtr)) . | (Some(CastTy::Float), Some(CastTy::Ptr(_))) . | (Some(CastTy::Ptr(_) | CastTy::FnPtr), Some(CastTy::Float)) => { . span_mirbug!(self, rvalue, "Invalid cast {:?} -> {:?}", ty_from, ty,) . } . ( . Some(CastTy::Int(_)), -- line 2309 ---------------------------------------- -- line 2312 ---------------------------------------- . | (Some(CastTy::Float), Some(CastTy::Int(_) | CastTy::Float)) . | (Some(CastTy::Ptr(_)), Some(CastTy::Int(_) | CastTy::Ptr(_))) . | (Some(CastTy::FnPtr), Some(CastTy::Int(_) | CastTy::Ptr(_))) => (), . } . } . } . } . 1,040 ( 0.00%) Rvalue::Ref(region, _borrow_kind, borrowed_place) => { 6,240 ( 0.00%) self.add_reborrow_constraint(&body, location, region, borrowed_place); . } . . Rvalue::BinaryOp( . BinOp::Eq | BinOp::Ne | BinOp::Lt | BinOp::Le | BinOp::Gt | BinOp::Ge, 348 ( 0.00%) box (left, right), . ) => { 580 ( 0.00%) self.check_operand(left, location); 580 ( 0.00%) self.check_operand(right, location); . 116 ( 0.00%) let ty_left = left.ty(body, tcx); 348 ( 0.00%) match ty_left.kind() { . // Types with regions are comparable if they have a common super-type. . ty::RawPtr(_) | ty::FnPtr(_) => { . let ty_right = right.ty(body, tcx); . let common_ty = self.infcx.next_ty_var(TypeVariableOrigin { . kind: TypeVariableOriginKind::MiscVariable, . span: body.source_info(location).span, . }); . self.sub_types( -- line 2340 ---------------------------------------- -- line 2360 ---------------------------------------- . ty_right, . terr . ) . } . } . // For types with no regions we can just check that the . // both operands have the same type. . ty::Int(_) | ty::Uint(_) | ty::Bool | ty::Char | ty::Float(_) 580 ( 0.00%) if ty_left == right.ty(body, tcx) => {} . // Other types are compared by trait methods, not by . // `Rvalue::BinaryOp`. . _ => span_mirbug!( . self, . rvalue, . "unexpected comparison types {:?} and {:?}", . ty_left, . right.ty(body, tcx) . ), . } . } . . Rvalue::Use(operand) | Rvalue::UnaryOp(_, operand) => { 2,220 ( 0.00%) self.check_operand(operand, location); . } . . Rvalue::BinaryOp(_, box (left, right)) . | Rvalue::CheckedBinaryOp(_, box (left, right)) => { 192 ( 0.00%) self.check_operand(left, location); 96 ( 0.00%) self.check_operand(right, location); . } . . Rvalue::AddressOf(..) . | Rvalue::ThreadLocalRef(..) . | Rvalue::Len(..) . | Rvalue::Discriminant(..) => {} . } 98,440 ( 0.01%) } . . /// If this rvalue supports a user-given type annotation, then . /// extract and return it. This represents the final type of the . /// rvalue and will be unified with the inferred type. . fn rvalue_user_ty(&self, rvalue: &Rvalue<'tcx>) -> Option { 53,852 ( 0.00%) match rvalue { . Rvalue::Use(_) . | Rvalue::ThreadLocalRef(_) . | Rvalue::Repeat(..) . | Rvalue::Ref(..) . | Rvalue::AddressOf(..) . | Rvalue::Len(..) . | Rvalue::Cast(..) . | Rvalue::ShallowInitBox(..) . | Rvalue::BinaryOp(..) . | Rvalue::CheckedBinaryOp(..) . | Rvalue::NullaryOp(..) . | Rvalue::UnaryOp(..) . | Rvalue::Discriminant(..) => None, . 32,892 ( 0.00%) Rvalue::Aggregate(aggregate, _) => match **aggregate { 15,669 ( 0.00%) AggregateKind::Adt(_, _, _, user_ty, _) => user_ty, . AggregateKind::Array(_) => None, . AggregateKind::Tuple => None, . AggregateKind::Closure(_, _) => None, . AggregateKind::Generator(_, _, _) => None, . }, . } . } . -- line 2426 ---------------------------------------- -- line 2431 ---------------------------------------- . aggregate_kind: &AggregateKind<'tcx>, . operands: &[Operand<'tcx>], . location: Location, . ) { . let tcx = self.tcx(); . . self.prove_aggregate_predicates(aggregate_kind, location); . 10,964 ( 0.00%) if *aggregate_kind == AggregateKind::Tuple { . // tuple rvalue field type is always the type of the op. Nothing to check here. . return; . } . 5,848 ( 0.00%) for (i, operand) in operands.iter().enumerate() { 30 ( 0.00%) let field_ty = match self.aggregate_field_ty(aggregate_kind, i, location) { 11,696 ( 0.00%) Ok(field_ty) => field_ty, . Err(FieldAccessError::OutOfRange { field_count }) => { . span_mirbug!( . self, . rvalue, . "accessed field #{} but variant only has {}", . i, . field_count . ); . continue; . } . }; . let operand_ty = operand.ty(body, tcx); 35,088 ( 0.00%) let operand_ty = self.normalize(operand_ty, location); . 11,696 ( 0.00%) if let Err(terr) = self.sub_types( . operand_ty, 5,848 ( 0.00%) field_ty, . location.to_locations(), . ConstraintCategory::Boring, . ) { . span_mirbug!( . self, . rvalue, . "{:?} is not a subtype of {:?}: {:?}", . operand_ty, -- line 2471 ---------------------------------------- -- line 2486 ---------------------------------------- . fn add_reborrow_constraint( . &mut self, . body: &Body<'tcx>, . location: Location, . borrow_region: ty::Region<'tcx>, . borrowed_place: &Place<'tcx>, . ) { . // These constraints are only meaningful during borrowck: 1,040 ( 0.00%) let BorrowCheckContext { borrow_set, location_table, all_facts, constraints, .. } = . self.borrowck_context; . . // In Polonius mode, we also push a `loan_issued_at` fact . // linking the loan to the region (in some cases, though, . // there is no loan associated with this borrow expression -- . // that occurs when we are borrowing an unsafe place, for . // example). 6,240 ( 0.00%) if let Some(all_facts) = all_facts { . let _prof_timer = self.infcx.tcx.prof.generic_activity("polonius_fact_generation"); . if let Some(borrow_index) = borrow_set.get_index_of(&location) { . let region_vid = borrow_region.to_region_vid(); . all_facts.loan_issued_at.push(( . region_vid, . borrow_index, . location_table.mid_index(location), . )); -- line 2510 ---------------------------------------- -- line 2516 ---------------------------------------- . // *p`, where the `p` has type `&'b mut Foo`, for example, we . // need to ensure that `'b: 'a`. . . debug!( . "add_reborrow_constraint({:?}, {:?}, {:?})", . location, borrow_region, borrowed_place . ); . 1,040 ( 0.00%) let mut cursor = borrowed_place.projection.as_ref(); 1,040 ( 0.00%) let tcx = self.infcx.tcx; 2,080 ( 0.00%) let field = path_utils::is_upvar_field_projection( . tcx, 2,080 ( 0.00%) &self.borrowck_context.upvars, . borrowed_place.as_ref(), . body, . ); 2,080 ( 0.00%) let category = if let Some(field) = field { . let var_hir_id = self.borrowck_context.upvars[field.index()].place.get_root_variable(); . // FIXME(project-rfc-2229#8): Use Place for better diagnostics . ConstraintCategory::ClosureUpvar(var_hir_id) . } else { . ConstraintCategory::Boring . }; . 5,966 ( 0.00%) while let [proj_base @ .., elem] = cursor { . cursor = proj_base; . . debug!("add_reborrow_constraint - iteration {:?}", elem); . 5,809 ( 0.00%) match elem { . ProjectionElem::Deref => { 1,544 ( 0.00%) let base_ty = Place::ty_from(borrowed_place.local, proj_base, body, tcx).ty; . . debug!("add_reborrow_constraint - base_ty = {:?}", base_ty); 3,860 ( 0.00%) match base_ty.kind() { . ty::Ref(ref_region, _, mutbl) => { 772 ( 0.00%) constraints.outlives_constraints.push(OutlivesConstraint { 1,544 ( 0.00%) sup: ref_region.to_region_vid(), . sub: borrow_region.to_region_vid(), . locations: location.to_locations(), . category, . variance_info: ty::VarianceDiagInfo::default(), . }); . 2,132 ( 0.00%) match mutbl { . hir::Mutability::Not => { . // Immutable reference. We don't need the base . // to be valid for the entire lifetime of . // the borrow. . break; . } . hir::Mutability::Mut => { . // Mutable reference. We *do* need the base -- line 2568 ---------------------------------------- -- line 2617 ---------------------------------------- . ) { . let tcx = self.tcx(); . . debug!( . "prove_aggregate_predicates(aggregate_kind={:?}, location={:?})", . aggregate_kind, location . ); . 136,339 ( 0.01%) let (def_id, instantiated_predicates) = match aggregate_kind { . AggregateKind::Adt(adt_did, _, substs, _, _) => { 41,784 ( 0.00%) (*adt_did, tcx.predicates_of(*adt_did).instantiate(tcx, substs)) . } . . // For closures, we have some **extra requirements** we . // . // have to check. In particular, in their upvars and . // signatures, closures often reference various regions . // from the surrounding function -- we call those the . // closure's free regions. When we borrow-check (and hence -- line 2635 ---------------------------------------- -- line 2644 ---------------------------------------- . // . // Despite the opacity of the previous parapgrah, this is . // actually relatively easy to understand in terms of the . // desugaring. A closure gets desugared to a struct, and . // these extra requirements are basically like where . // clauses on the struct. . AggregateKind::Closure(def_id, substs) . | AggregateKind::Generator(def_id, substs, _) => { 264 ( 0.00%) (*def_id, self.prove_closure_bounds(tcx, def_id.expect_local(), substs, location)) . } . . AggregateKind::Array(_) | AggregateKind::Tuple => { 11,438 ( 0.00%) (CRATE_DEF_ID.to_def_id(), ty::InstantiatedPredicates::empty()) . } . }; . 10,964 ( 0.00%) self.normalize_and_prove_instantiated_predicates( . def_id, 32,892 ( 0.00%) instantiated_predicates, . location.to_locations(), . ); . } . 198 ( 0.00%) fn prove_closure_bounds( . &mut self, . tcx: TyCtxt<'tcx>, . def_id: LocalDefId, . substs: SubstsRef<'tcx>, . location: Location, . ) -> ty::InstantiatedPredicates<'tcx> { 71 ( 0.00%) if let Some(ref closure_region_requirements) = tcx.mir_borrowck(def_id).closure_requirements . { 5 ( 0.00%) let closure_constraints = QueryRegionConstraints { 30 ( 0.00%) outlives: closure_region_requirements.apply_requirements( . tcx, . def_id.to_def_id(), . substs, . ), . . // Presently, closures never propagate member . // constraints to their parents -- they are enforced . // locally. This is largely a non-issue as member -- line 2685 ---------------------------------------- -- line 2688 ---------------------------------------- . // closures. . member_constraints: vec![], . }; . . let bounds_mapping = closure_constraints . .outlives . .iter() . .enumerate() 15 ( 0.00%) .filter_map(|(idx, constraint)| { . let ty::OutlivesPredicate(k1, r2) = 10 ( 0.00%) constraint.no_bound_vars().unwrap_or_else(|| { . bug!("query_constraint {:?} contained bound vars", constraint,); . }); . . match k1.unpack() { . GenericArgKind::Lifetime(r1) => { . // constraint is r1: r2 . let r1_vid = self.borrowck_context.universal_regions.to_region_vid(r1); . let r2_vid = self.borrowck_context.universal_regions.to_region_vid(r2); . let outlives_requirements = . &closure_region_requirements.outlives_requirements[idx]; . Some(( . (r1_vid, r2_vid), 5 ( 0.00%) (outlives_requirements.category, outlives_requirements.blame_span), . )) . } . GenericArgKind::Type(_) | GenericArgKind::Const(_) => None, . } . }) . .collect(); . . let existing = self . .borrowck_context . .constraints . .closure_bounds_mapping . .insert(location, bounds_mapping); 5 ( 0.00%) assert!(existing.is_none(), "Multiple closures at the same location."); . . self.push_region_constraints( . location.to_locations(), . ConstraintCategory::ClosureBounds, . &closure_constraints, . ); . } . 66 ( 0.00%) tcx.predicates_of(def_id).instantiate(tcx, substs) 176 ( 0.00%) } . 3,810 ( 0.00%) #[instrument(skip(self, body), level = "debug")] . fn typeck_mir(&mut self, body: &Body<'tcx>) { 1,016 ( 0.00%) self.last_span = body.span; . debug!(?body.span); . . for (local, local_decl) in body.local_decls.iter_enumerated() { . self.check_local(&body, local, local_decl); . } . . for (block, block_data) in body.basic_blocks().iter_enumerated() { . let mut location = Location { block, statement_index: 0 }; . for stmt in &block_data.statements { 74,628 ( 0.00%) if !stmt.source_info.span.is_dummy() { 74,604 ( 0.00%) self.last_span = stmt.source_info.span; . } . self.check_stmt(body, stmt, location); 3,606 ( 0.00%) location.statement_index += 1; . } . . self.check_terminator(&body, block_data.terminator(), location); . self.check_iscleanup(&body, block_data); . } . } . } . -- line 2760 ---------------------------------------- -- line 2765 ---------------------------------------- . impl NormalizeLocation for Locations { . fn to_locations(self) -> Locations { . self . } . } . . impl NormalizeLocation for Location { . fn to_locations(self) -> Locations { 175,944 ( 0.01%) Locations::Single(self) . } . } . . #[derive(Debug, Default)] . struct ObligationAccumulator<'tcx> { . obligations: PredicateObligations<'tcx>, . } . -- line 2781 ---------------------------------------- 246,181 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/smallvec-1.7.0/src/lib.rs -------------------------------------------------------------------------------- Ir -- line 294 ---------------------------------------- . #[allow(deprecated)] . impl From for CollectionAllocErr { . fn from(_: LayoutErr) -> Self { . CollectionAllocErr::CapacityOverflow . } . } . . fn infallible(result: Result) -> T { 232,925 ( 0.01%) match result { . Ok(x) => x, . Err(CollectionAllocErr::CapacityOverflow) => panic!("capacity overflow"), . Err(CollectionAllocErr::AllocErr { layout }) => alloc::alloc::handle_alloc_error(layout), . } . } . . /// FIXME: use `Layout::array` when we require a Rust version where it’s stable . /// https://github.com/rust-lang/rust/issues/55724 -- line 310 ---------------------------------------- -- line 422 ---------------------------------------- . #[cfg(feature = "union")] . impl SmallVecData { . #[inline] . unsafe fn inline(&self) -> *const A::Item { . self.inline.as_ptr() as *const A::Item . } . #[inline] . unsafe fn inline_mut(&mut self) -> *mut A::Item { 27,196 ( 0.00%) self.inline.as_mut_ptr() as *mut A::Item . } . #[inline] . fn from_inline(inline: MaybeUninit) -> SmallVecData { . SmallVecData { . inline: core::mem::ManuallyDrop::new(inline), . } . } . #[inline] . unsafe fn into_inline(self) -> MaybeUninit { . core::mem::ManuallyDrop::into_inner(self.inline) . } . #[inline] . unsafe fn heap(&self) -> (*mut A::Item, usize) { 6,731 ( 0.00%) self.heap . } . #[inline] . unsafe fn heap_mut(&mut self) -> &mut (*mut A::Item, usize) { . &mut self.heap . } . #[inline] . fn from_heap(ptr: *mut A::Item, len: usize) -> SmallVecData { . SmallVecData { heap: (ptr, len) } -- line 452 ---------------------------------------- -- line 557 ---------------------------------------- . #[inline] . pub fn new() -> SmallVec { . // Try to detect invalid custom implementations of `Array`. Hopefully, . // this check should be optimized away entirely for valid ones. . assert!( . mem::size_of::() == A::size() * mem::size_of::() . && mem::align_of::() >= mem::align_of::() . ); 251,113 ( 0.01%) SmallVec { . capacity: 0, . data: SmallVecData::from_inline(MaybeUninit::uninit()), . } . } . . /// Construct an empty vector with enough capacity pre-allocated to store at least `n` . /// elements. . /// -- line 573 ---------------------------------------- -- line 635 ---------------------------------------- . /// let small_vec: SmallVec<_> = SmallVec::from_buf(buf); . /// . /// assert_eq!(&*small_vec, &[1, 2, 3, 4, 5]); . /// ``` . #[inline] . pub fn from_buf(buf: A) -> SmallVec { . SmallVec { . capacity: A::size(), 2,485 ( 0.00%) data: SmallVecData::from_inline(MaybeUninit::new(buf)), . } . } . . /// Constructs a new `SmallVec` on the stack from an `A` without . /// copying elements. Also sets the length, which must be less or . /// equal to the size of `buf`. . /// . /// ```rust -- line 651 ---------------------------------------- -- line 653 ---------------------------------------- . /// . /// let buf = [1, 2, 3, 4, 5, 0, 0, 0]; . /// let small_vec: SmallVec<_> = SmallVec::from_buf_and_len(buf, 5); . /// . /// assert_eq!(&*small_vec, &[1, 2, 3, 4, 5]); . /// ``` . #[inline] . pub fn from_buf_and_len(buf: A, len: usize) -> SmallVec { 12 ( 0.00%) assert!(len <= A::size()); 36 ( 0.00%) unsafe { SmallVec::from_buf_and_len_unchecked(MaybeUninit::new(buf), len) } . } . . /// Constructs a new `SmallVec` on the stack from an `A` without . /// copying elements. Also sets the length. The user is responsible . /// for ensuring that `len <= A::size()`. . /// . /// ```rust . /// use smallvec::SmallVec; -- line 670 ---------------------------------------- -- line 674 ---------------------------------------- . /// let small_vec: SmallVec<_> = unsafe { . /// SmallVec::from_buf_and_len_unchecked(MaybeUninit::new(buf), 5) . /// }; . /// . /// assert_eq!(&*small_vec, &[1, 2, 3, 4, 5]); . /// ``` . #[inline] . pub unsafe fn from_buf_and_len_unchecked(buf: MaybeUninit, len: usize) -> SmallVec { 6 ( 0.00%) SmallVec { . capacity: len, . data: SmallVecData::from_inline(buf), . } . } . . /// Sets the length of a vector. . /// . /// This will explicitly set the size of the vector, without actually . /// modifying its buffers, so it is up to the caller to ensure that the . /// vector is actually the specified size. . pub unsafe fn set_len(&mut self, new_len: usize) { . let (_, len_ptr, _) = self.triple_mut(); 52,125 ( 0.00%) *len_ptr = new_len; . } . . /// The maximum number of elements this vector can hold inline . #[inline] . fn inline_capacity() -> usize { . if mem::size_of::() > 0 { 92 ( 0.00%) A::size() . } else { . // For zero-size items code like `ptr.add(offset)` always returns the same pointer. . // Therefore all items are at the same address, . // and any array size has capacity for infinitely many items. . // The capacity is limited by the bit width of the length field. . // . // `Vec` also does this: . // https://github.com/rust-lang/rust/blob/1.44.0/src/liballoc/raw_vec.rs#L186 -- line 710 ---------------------------------------- -- line 725 ---------------------------------------- . #[inline] . pub fn len(&self) -> usize { . self.triple().1 . } . . /// Returns `true` if the vector is empty . #[inline] . pub fn is_empty(&self) -> bool { 52,933 ( 0.00%) self.len() == 0 . } . . /// The number of items the vector can hold without reallocating . #[inline] . pub fn capacity(&self) -> usize { . self.triple().2 . } . . /// Returns a tuple with (data ptr, len, capacity) . /// Useful to get all SmallVec properties with a single check of the current storage variant. . #[inline] . fn triple(&self) -> (*const A::Item, usize, usize) { . unsafe { 1,781,807 ( 0.10%) if self.spilled() { . let (ptr, len) = self.data.heap(); . (ptr, len, self.capacity) . } else { . (self.data.inline(), self.capacity, Self::inline_capacity()) . } . } . } . . /// Returns a tuple with (data ptr, len ptr, capacity) . #[inline] . fn triple_mut(&mut self) -> (*mut A::Item, &mut usize, usize) { . unsafe { 3,302,290 ( 0.19%) if self.spilled() { 43,517 ( 0.00%) let &mut (ptr, ref mut len_ptr) = self.data.heap_mut(); . (ptr, len_ptr, self.capacity) . } else { . ( . self.data.inline_mut(), . &mut self.capacity, . Self::inline_capacity(), . ) . } . } . } . . /// Returns `true` if the data has spilled into a separate heap-allocated buffer. . #[inline] . pub fn spilled(&self) -> bool { 3,335,362 ( 0.19%) self.capacity > Self::inline_capacity() . } . . /// Creates a draining iterator that removes the specified range in the vector . /// and yields the removed items. . /// . /// Note 1: The element range is removed even if the iterator is only . /// partially consumed or not consumed at all. . /// -- line 784 ---------------------------------------- -- line 821 ---------------------------------------- . iter: range_slice.iter(), . vec: NonNull::from(self), . } . } . } . . /// Append an item to the vector. . #[inline] 33,430 ( 0.00%) pub fn push(&mut self, value: A::Item) { . unsafe { . let (mut ptr, mut len, cap) = self.triple_mut(); 436,310 ( 0.03%) if *len == cap { 93 ( 0.00%) self.reserve(1); 8,409 ( 0.00%) let &mut (heap_ptr, ref mut heap_len) = self.data.heap_mut(); . ptr = heap_ptr; . len = heap_len; . } 12,914 ( 0.00%) ptr::write(ptr.add(*len), value); 822,055 ( 0.05%) *len += 1; . } 26,744 ( 0.00%) } . . /// Remove an item from the end of the vector and return it, or None if empty. . #[inline] . pub fn pop(&mut self) -> Option { . unsafe { . let (ptr, len_ptr, _) = self.triple_mut(); 197,652 ( 0.01%) if *len_ptr == 0 { . return None; . } 58,995 ( 0.00%) let last_index = *len_ptr - 1; 59,057 ( 0.00%) *len_ptr = last_index; 58,216 ( 0.00%) Some(ptr::read(ptr.add(last_index))) . } 25 ( 0.00%) } . . /// Moves all the elements of `other` into `self`, leaving `other` empty. . /// . /// # Example . /// . /// ``` . /// # use smallvec::{SmallVec, smallvec}; . /// let mut v0: SmallVec<[u8; 16]> = smallvec![1, 2, 3]; -- line 863 ---------------------------------------- -- line 879 ---------------------------------------- . /// or if the capacity computation overflows `usize`. . pub fn grow(&mut self, new_cap: usize) { . infallible(self.try_grow(new_cap)) . } . . /// Re-allocate to set the capacity to `max(new_cap, inline_size())`. . /// . /// Panics if `new_cap` is less than the vector's length 1,701 ( 0.00%) pub fn try_grow(&mut self, new_cap: usize) -> Result<(), CollectionAllocErr> { . unsafe { 123 ( 0.00%) let (ptr, &mut len, cap) = self.triple_mut(); . let unspilled = !self.spilled(); 15,758 ( 0.00%) assert!(new_cap >= len); 15,758 ( 0.00%) if new_cap <= self.inline_size() { . if unspilled { . return Ok(()); . } . self.data = SmallVecData::from_inline(MaybeUninit::uninit()); . ptr::copy_nonoverlapping(ptr, self.data.inline_mut(), len); . self.capacity = len; . deallocate(ptr, cap); 15,758 ( 0.00%) } else if new_cap != cap { 15,503 ( 0.00%) let layout = layout_array::(new_cap)?; . debug_assert!(layout.size() > 0); . let new_alloc; 7,879 ( 0.00%) if unspilled { . new_alloc = NonNull::new(alloc::alloc::alloc(layout)) . .ok_or(CollectionAllocErr::AllocErr { layout })? . .cast() . .as_ptr(); . ptr::copy_nonoverlapping(ptr, new_alloc, len); . } else { . // This should never fail since the same succeeded . // when previously allocating `ptr`. 2,969 ( 0.00%) let old_layout = layout_array::(cap)?; . . let new_ptr = alloc::alloc::realloc(ptr as *mut u8, old_layout, layout.size()); . new_alloc = NonNull::new(new_ptr) . .ok_or(CollectionAllocErr::AllocErr { layout })? . .cast() . .as_ptr(); . } 15,758 ( 0.00%) self.data = SmallVecData::from_heap(new_alloc, len); 23,238 ( 0.00%) self.capacity = new_cap; . } . Ok(()) . } 1,824 ( 0.00%) } . . /// Reserve capacity for `additional` more elements to be inserted. . /// . /// May reserve more space to avoid frequent reallocations. . /// . /// Panics if the capacity computation overflows `usize`. . #[inline] 140,887 ( 0.01%) pub fn reserve(&mut self, additional: usize) { 270,303 ( 0.02%) infallible(self.try_reserve(additional)) 160,680 ( 0.01%) } . . /// Reserve capacity for `additional` more elements to be inserted. . /// . /// May reserve more space to avoid frequent reallocations. 958,829 ( 0.06%) pub fn try_reserve(&mut self, additional: usize) -> Result<(), CollectionAllocErr> { . // prefer triple_mut() even if triple() would work . // so that the optimizer removes duplicated calls to it . // from callers like insert() 2,706 ( 0.00%) let (_, &mut len, cap) = self.triple_mut(); 868,210 ( 0.05%) if cap - len >= additional { . return Ok(()); . } . let new_cap = len . .checked_add(additional) . .and_then(usize::checked_next_power_of_two) . .ok_or(CollectionAllocErr::CapacityOverflow)?; 333 ( 0.00%) self.try_grow(new_cap) 1,047,284 ( 0.06%) } . . /// Reserve the minimum capacity for `additional` more elements to be inserted. . /// . /// Panics if the new capacity overflows `usize`. . pub fn reserve_exact(&mut self, additional: usize) { . infallible(self.try_reserve_exact(additional)) . } . . /// Reserve the minimum capacity for `additional` more elements to be inserted. . pub fn try_reserve_exact(&mut self, additional: usize) -> Result<(), CollectionAllocErr> { . let (_, &mut len, cap) = self.triple_mut(); 37,814 ( 0.00%) if cap - len >= additional { . return Ok(()); . } . let new_cap = len . .checked_add(additional) . .ok_or(CollectionAllocErr::CapacityOverflow)?; 64 ( 0.00%) self.try_grow(new_cap) 64 ( 0.00%) } . . /// Shrink the capacity of the vector as much as possible. . /// . /// When possible, this will move data from an external heap buffer to the vector's inline . /// storage. . pub fn shrink_to_fit(&mut self) { . if !self.spilled() { . return; -- line 981 ---------------------------------------- -- line 999 ---------------------------------------- . /// If `len` is greater than or equal to the vector's current length, this has no . /// effect. . /// . /// This does not re-allocate. If you want the vector's capacity to shrink, call . /// `shrink_to_fit` after truncating. . pub fn truncate(&mut self, len: usize) { . unsafe { . let (ptr, len_ptr, _) = self.triple_mut(); 15,298 ( 0.00%) while len < *len_ptr { . let last_index = *len_ptr - 1; . *len_ptr = last_index; . ptr::drop_in_place(ptr.add(last_index)); . } . } . } . . /// Extracts a slice containing the entire vector. -- line 1015 ---------------------------------------- -- line 1044 ---------------------------------------- . pub fn clear(&mut self) { . self.truncate(0); . } . . /// Remove and return the element at position `index`, shifting all elements after it to the . /// left. . /// . /// Panics if `index` is out of bounds. 12 ( 0.00%) pub fn remove(&mut self, index: usize) -> A::Item { . unsafe { . let (mut ptr, len_ptr, _) = self.triple_mut(); 923 ( 0.00%) let len = *len_ptr; 3,816 ( 0.00%) assert!(index < len); 39,872 ( 0.00%) *len_ptr = len - 1; . ptr = ptr.add(index); . let item = ptr::read(ptr); 2,544 ( 0.00%) ptr::copy(ptr.add(1), ptr, len - index - 1); . item . } 15 ( 0.00%) } . . /// Insert an element at position `index`, shifting all elements after it to the right. . /// . /// Panics if `index` is out of bounds. 21,569 ( 0.00%) pub fn insert(&mut self, index: usize, element: A::Item) { . self.reserve(1); . . unsafe { . let (mut ptr, len_ptr, _) = self.triple_mut(); 2,009 ( 0.00%) let len = *len_ptr; 3,970 ( 0.00%) assert!(index <= len); 7,940 ( 0.00%) *len_ptr = len + 1; . ptr = ptr.add(index); 3,970 ( 0.00%) ptr::copy(ptr, ptr.add(1), len - index); . ptr::write(ptr, element); . } 13,728 ( 0.00%) } . . /// Insert multiple elements at position `index`, shifting all following elements toward the . /// back. . pub fn insert_many>(&mut self, index: usize, iterable: I) { . let mut iter = iterable.into_iter(); . if index == self.len() { . return self.extend(iter); . } -- line 1088 ---------------------------------------- -- line 1201 ---------------------------------------- . } . } . . /// Retains only the elements specified by the predicate. . /// . /// In other words, remove all elements `e` such that `f(&e)` returns `false`. . /// This method operates in place and preserves the order of the retained . /// elements. 34,668 ( 0.00%) pub fn retain bool>(&mut self, mut f: F) { . let mut del = 0; . let len = self.len(); . for i in 0..len { 11,860 ( 0.00%) if !f(&mut self[i]) { 276 ( 0.00%) del += 1; 3,242 ( 0.00%) } else if del > 0 { . self.swap(i - del, i); . } . } 7,704 ( 0.00%) self.truncate(len - del); 30,816 ( 0.00%) } . . /// Removes consecutive duplicate elements. . pub fn dedup(&mut self) . where . A::Item: PartialEq, . { . self.dedup_by(|a, b| a == b); . } -- line 1228 ---------------------------------------- -- line 1418 ---------------------------------------- . capacity: len, . data: SmallVecData::from_inline(unsafe { . let mut data: MaybeUninit = MaybeUninit::uninit(); . ptr::copy_nonoverlapping( . slice.as_ptr(), . data.as_mut_ptr() as *mut A::Item, . len, . ); 166 ( 0.00%) data . }), . } . } else { . let mut b = slice.to_vec(); . let (ptr, cap) = (b.as_mut_ptr(), b.capacity()); . mem::forget(b); . SmallVec { . capacity: cap, -- line 1434 ---------------------------------------- -- line 1436 ---------------------------------------- . } . } . } . . /// Copy elements from a slice into the vector at position `index`, shifting any following . /// elements toward the back. . /// . /// For slices of `Copy` types, this is more efficient than `insert`. 99,055 ( 0.01%) pub fn insert_from_slice(&mut self, index: usize, slice: &[A::Item]) { . self.reserve(slice.len()); . . let len = self.len(); 28,749 ( 0.00%) assert!(index <= len); . . unsafe { . let slice_ptr = slice.as_ptr(); . let ptr = self.as_mut_ptr().add(index); . ptr::copy(ptr, ptr.add(slice.len()), len - index); . ptr::copy_nonoverlapping(slice_ptr, ptr, slice.len()); 19,166 ( 0.00%) self.set_len(len + slice.len()); . } 76,664 ( 0.00%) } . . /// Copy elements from a slice and append them to the vector. . /// . /// For slices of `Copy` types, this is more efficient than `extend`. . #[inline] . pub fn extend_from_slice(&mut self, slice: &[A::Item]) { . let len = self.len(); 24,232 ( 0.00%) self.insert_from_slice(len, slice); . } . } . . impl SmallVec . where . A::Item: Clone, . { . /// Resizes the vector so that its length is equal to `len`. -- line 1473 ---------------------------------------- -- line 1522 ---------------------------------------- . } . } . } . . impl ops::DerefMut for SmallVec { . #[inline] . fn deref_mut(&mut self) -> &mut [A::Item] { . unsafe { 11,001 ( 0.00%) let (ptr, &mut len, _) = self.triple_mut(); . slice::from_raw_parts_mut(ptr, len) . } . } . } . . impl AsRef<[A::Item]> for SmallVec { . #[inline] . fn as_ref(&self) -> &[A::Item] { -- line 1538 ---------------------------------------- -- line 1716 ---------------------------------------- . SmallVec::extend_from_slice(self, other) . } . } . . impl FromIterator for SmallVec { . #[inline] . fn from_iter>(iterable: I) -> SmallVec { . let mut v = SmallVec::new(); 445,522 ( 0.03%) v.extend(iterable); . v . } . } . . impl Extend for SmallVec { 1,401,170 ( 0.08%) fn extend>(&mut self, iterable: I) { 228,568 ( 0.01%) let mut iter = iterable.into_iter(); . let (lower_size_bound, _) = iter.size_hint(); 32,308 ( 0.00%) self.reserve(lower_size_bound); . . unsafe { . let (ptr, len_ptr, cap) = self.triple_mut(); . let mut len = SetLenOnDrop::new(len_ptr); 841,516 ( 0.05%) while len.get() < cap { 196,243 ( 0.01%) if let Some(out) = iter.next() { . ptr::write(ptr.add(len.get()), out); . len.increment_len(1); . } else { . return; . } . } . } . 48,929 ( 0.00%) for elem in iter { 18,186 ( 0.00%) self.push(elem); . } 1,237,564 ( 0.07%) } . } . . impl fmt::Debug for SmallVec . where . A::Item: fmt::Debug, . { . fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { . f.debug_list().entries(self.iter()).finish() -- line 1759 ---------------------------------------- -- line 1764 ---------------------------------------- . #[inline] . fn default() -> SmallVec { . SmallVec::new() . } . } . . #[cfg(feature = "may_dangle")] . unsafe impl<#[may_dangle] A: Array> Drop for SmallVec { 266,289 ( 0.02%) fn drop(&mut self) { . unsafe { 815,997 ( 0.05%) if self.spilled() { . let (ptr, len) = self.data.heap(); . Vec::from_raw_parts(ptr, len, self.capacity); . } else { . ptr::drop_in_place(&mut self[..]); . } . } 276,496 ( 0.02%) } . } . . #[cfg(not(feature = "may_dangle"))] . impl Drop for SmallVec { . fn drop(&mut self) { . unsafe { . if self.spilled() { . let (ptr, len) = self.data.heap(); -- line 1789 ---------------------------------------- -- line 1888 ---------------------------------------- . A::Item: Clone, . { . fn clone(&self) -> IntoIter { . SmallVec::from(self.as_slice()).into_iter() . } . } . . impl Drop for IntoIter { 730 ( 0.00%) fn drop(&mut self) { 29,650 ( 0.00%) for _ in self {} 656 ( 0.00%) } . } . . impl Iterator for IntoIter { . type Item = A::Item; . . #[inline] . fn next(&mut self) -> Option { 278,661 ( 0.02%) if self.current == self.end { . None . } else { . unsafe { . let current = self.current; 78,356 ( 0.00%) self.current += 1; 1,917 ( 0.00%) Some(ptr::read(self.data.as_ptr().add(current))) . } . } . } . . #[inline] . fn size_hint(&self) -> (usize, Option) { 5,350 ( 0.00%) let size = self.end - self.current; . (size, Some(size)) . } . } . . impl DoubleEndedIterator for IntoIter { . #[inline] . fn next_back(&mut self) -> Option { . if self.current == self.end { -- line 1927 ---------------------------------------- -- line 1955 ---------------------------------------- . impl IntoIterator for SmallVec { . type IntoIter = IntoIter; . type Item = A::Item; . fn into_iter(mut self) -> Self::IntoIter { . unsafe { . // Set SmallVec len to zero as `IntoIter` drop handles dropping of the elements . let len = self.len(); . self.set_len(0); 58,542 ( 0.00%) IntoIter { 184,653 ( 0.01%) data: self, . current: 0, . end: len, . } . } . } . } . . impl<'a, A: Array> IntoIterator for &'a SmallVec { -- line 1972 ---------------------------------------- -- line 2000 ---------------------------------------- . len: &'a mut usize, . local_len: usize, . } . . impl<'a> SetLenOnDrop<'a> { . #[inline] . fn new(len: &'a mut usize) -> Self { . SetLenOnDrop { 181,926 ( 0.01%) local_len: *len, . len, . } . } . . #[inline] . fn get(&self) -> usize { . self.local_len . } . . #[inline] . fn increment_len(&mut self, increment: usize) { 159,434 ( 0.01%) self.local_len += increment; . } . } . . impl<'a> Drop for SetLenOnDrop<'a> { . #[inline] . fn drop(&mut self) { 229,550 ( 0.01%) *self.len = self.local_len; . } . } . . #[cfg(feature = "const_new")] . impl SmallVec<[T; N]> { . /// Construct an empty vector. . /// . /// This is a `const` version of [`SmallVec::new`] that is enabled by the feature `const_new`, with the limitation that it only works for arrays. -- line 2035 ---------------------------------------- 2,304,329 ( 0.13%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_span/src/span_encoding.rs -------------------------------------------------------------------------------- Ir -- line 55 ---------------------------------------- . /// `ctxt` values depend partly on the crate size and partly on the form of . /// the code. No crates in `rustc-perf` need more than 15 bits for `ctxt`, . /// but larger crates might need more than 16 bits. . /// . /// In order to reliably use parented spans in incremental compilation, . /// the dependency to the parent definition's span. This is performed . /// using the callback `SPAN_TRACK` to access the query engine. . /// 162,081 ( 0.01%) #[derive(Clone, Copy, Eq, PartialEq, Hash)] . // FIXME(@lcnr): Enable this attribute once the bootstrap . // compiler knows of `rustc_pass_by_value`. . // . // Right now, this lint would only trigger when compiling the . // stage 2 compiler, which is fairly annoying as there are . // a lot of places using `&Span` right now. After the next bootstrap bump, . // the lint will already trigger when using stage 1, which is a lot less annoying. . // . // #[cfg_attr(not(bootstrap), rustc_pass_by_value)] . pub struct Span { 4,449 ( 0.00%) base_or_index: u32, 1,702 ( 0.00%) len_or_tag: u16, 3,194 ( 0.00%) ctxt_or_zero: u16, . } . . const LEN_TAG: u16 = 0b1000_0000_0000_0000; . const MAX_LEN: u32 = 0b0111_1111_1111_1111; . const MAX_CTXT: u32 = 0b1111_1111_1111_1111; . . /// Dummy span, both position and length are zero, syntax context is zero as well. . pub const DUMMY_SP: Span = Span { base_or_index: 0, len_or_tag: 0, ctxt_or_zero: 0 }; -- line 84 ---------------------------------------- -- line 86 ---------------------------------------- . impl Span { . #[inline] . pub fn new( . mut lo: BytePos, . mut hi: BytePos, . ctxt: SyntaxContext, . parent: Option, . ) -> Self { 186,068 ( 0.01%) if lo > hi { . std::mem::swap(&mut lo, &mut hi); . } . 372,136 ( 0.02%) let (base, len, ctxt2) = (lo.0, hi.0 - lo.0, ctxt.as_u32()); . 1,453,286 ( 0.08%) if len <= MAX_LEN && ctxt2 <= MAX_CTXT && parent.is_none() { . // Inline format. . Span { base_or_index: base, len_or_tag: len as u16, ctxt_or_zero: ctxt2 as u16 } . } else { . // Interned format. . let index = 240 ( 0.00%) with_span_interner(|interner| interner.intern(&SpanData { lo, hi, ctxt, parent })); . Span { base_or_index: index, len_or_tag: LEN_TAG, ctxt_or_zero: 0 } . } 545,261 ( 0.03%) } . . #[inline] . pub fn data(self) -> SpanData { . let data = self.data_untracked(); 38,286 ( 0.00%) if let Some(parent) = data.parent { . (*SPAN_TRACK)(parent); . } . data . } . . /// Internal function to translate between an encoded span and the expanded representation. . /// This function must not be used outside the incremental engine. . #[inline] . pub fn data_untracked(self) -> SpanData { 2,417,020 ( 0.14%) if self.len_or_tag != LEN_TAG { . // Inline format. . debug_assert!(self.len_or_tag as u32 <= MAX_LEN); . SpanData { . lo: BytePos(self.base_or_index), 2,207,027 ( 0.13%) hi: BytePos(self.base_or_index + self.len_or_tag as u32), . ctxt: SyntaxContext::from_u32(self.ctxt_or_zero as u32), . parent: None, . } . } else { . // Interned format. . debug_assert!(self.ctxt_or_zero == 0); 24,083 ( 0.00%) let index = self.base_or_index; 91,894 ( 0.01%) with_span_interner(|interner| interner.spans[index as usize]) . } 842,385 ( 0.05%) } . } . 4 ( 0.00%) #[derive(Default)] . pub struct SpanInterner { . spans: FxIndexSet, . } . . impl SpanInterner { 42 ( 0.00%) fn intern(&mut self, span_data: &SpanData) -> u32 { 56 ( 0.00%) let (index, _) = self.spans.insert_full(*span_data); . index as u32 56 ( 0.00%) } . } . . // If an interner exists, return it. Otherwise, prepare a fresh one. . #[inline] . fn with_span_interner T>(f: F) -> T { . crate::with_session_globals(|session_globals| f(&mut *session_globals.span_interner.lock())) . } 1,936,774 ( 0.11%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/cell.rs -------------------------------------------------------------------------------- Ir -- line 346 ---------------------------------------- . /// . /// let c = Cell::new(5); . /// . /// c.set(10); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn set(&self, val: T) { 765 ( 0.00%) let old = self.replace(val); 712 ( 0.00%) drop(old); . } . . /// Swaps the values of two `Cell`s. . /// Difference with `std::mem::swap` is that this function doesn't require `&mut` reference. . /// . /// # Examples . /// . /// ``` -- line 363 ---------------------------------------- -- line 434 ---------------------------------------- . /// . /// let five = c.get(); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn get(&self) -> T { . // SAFETY: This can cause data races if called from a separate thread, . // but `Cell` is `!Sync` so this won't happen. 91,608 ( 0.01%) unsafe { *self.value.get() } . } . . /// Updates the contained value using a function and returns the new value. . /// . /// # Examples . /// . /// ``` . /// #![feature(cell_update)] -- line 450 ---------------------------------------- -- line 689 ---------------------------------------- . . #[inline(always)] . fn is_writing(x: BorrowFlag) -> bool { . x < UNUSED . } . . #[inline(always)] . fn is_reading(x: BorrowFlag) -> bool { 389,372 ( 0.02%) x > UNUSED . } . . impl RefCell { . /// Creates a new `RefCell` containing `value`. . /// . /// # Examples . /// . /// ``` -- line 705 ---------------------------------------- -- line 706 ---------------------------------------- . /// use std::cell::RefCell; . /// . /// let c = RefCell::new(5); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_refcell_new", since = "1.24.0")] . #[inline] . pub const fn new(value: T) -> RefCell { 19,666 ( 0.00%) RefCell { 19,362 ( 0.00%) value: UnsafeCell::new(value), . borrow: Cell::new(UNUSED), . #[cfg(feature = "debug_refcell")] . borrowed_at: Cell::new(None), . } . } . . /// Consumes the `RefCell`, returning the wrapped value. . /// -- line 723 ---------------------------------------- -- line 731 ---------------------------------------- . /// let five = c.into_inner(); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_cell_into_inner", issue = "78729")] . #[inline] . pub const fn into_inner(self) -> T { . // Since this function takes `self` (the `RefCell`) by value, the . // compiler statically verifies that it is not currently borrowed. 1,332 ( 0.00%) self.value.into_inner() . } . . /// Replaces the wrapped value with a new one, returning the old value, . /// without deinitializing either one. . /// . /// This function corresponds to [`std::mem::replace`](../mem/fn.replace.html). . /// . /// # Panics -- line 747 ---------------------------------------- -- line 845 ---------------------------------------- . /// let c = RefCell::new(5); . /// . /// let m = c.borrow_mut(); . /// let b = c.borrow(); // this causes a panic . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[inline] . #[track_caller] 2,562 ( 0.00%) pub fn borrow(&self) -> Ref<'_, T> { . self.try_borrow().expect("already mutably borrowed") 7,686 ( 0.00%) } . . /// Immutably borrows the wrapped value, returning an error if the value is currently mutably . /// borrowed. . /// . /// The borrow lasts until the returned `Ref` exits scope. Multiple immutable borrows can be . /// taken out at the same time. . /// . /// This is the non-panicking variant of [`borrow`](#method.borrow). -- line 863 ---------------------------------------- -- line 937 ---------------------------------------- . /// let c = RefCell::new(5); . /// let m = c.borrow(); . /// . /// let b = c.borrow_mut(); // this causes a panic . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[inline] . #[track_caller] 39,531 ( 0.00%) pub fn borrow_mut(&self) -> RefMut<'_, T> { . self.try_borrow_mut().expect("already borrowed") 118,593 ( 0.01%) } . . /// Mutably borrows the wrapped value, returning an error if the value is currently borrowed. . /// . /// The borrow lasts until the returned `RefMut` or all `RefMut`s derived . /// from it exit scope. The value cannot be borrowed while this borrow is . /// active. . /// . /// This is the non-panicking variant of [`borrow_mut`](#method.borrow_mut). -- line 955 ---------------------------------------- -- line 975 ---------------------------------------- . match BorrowRefMut::new(&self.borrow) { . Some(b) => { . #[cfg(feature = "debug_refcell")] . { . self.borrowed_at.set(Some(crate::panic::Location::caller())); . } . . // SAFETY: `BorrowRef` guarantees unique access. 22 ( 0.00%) Ok(RefMut { value: unsafe { &mut *self.value.get() }, borrow: b }) . } . None => Err(BorrowMutError { . // If a borrow occurred, then we must already have an outstanding borrow, . // so `borrowed_at` will be `Some` . #[cfg(feature = "debug_refcell")] . location: self.borrowed_at.get().unwrap(), . }), . } -- line 991 ---------------------------------------- -- line 1254 ---------------------------------------- . . struct BorrowRef<'b> { . borrow: &'b Cell, . } . . impl<'b> BorrowRef<'b> { . #[inline] . fn new(borrow: &'b Cell) -> Option> { 602,900 ( 0.04%) let b = borrow.get().wrapping_add(1); 344,075 ( 0.02%) if !is_reading(b) { . // Incrementing borrow can result in a non-reading value (<= 0) in these cases: . // 1. It was < 0, i.e. there are writing borrows, so we can't allow a read borrow . // due to Rust's reference aliasing rules . // 2. It was isize::MAX (the max amount of reading borrows) and it overflowed . // into isize::MIN (the max amount of writing borrows) so we can't allow . // an additional read borrow because isize can't represent so many read borrows . // (this can only happen if you mem::forget more than a small constant amount of . // `Ref`s, which is not good practice) -- line 1271 ---------------------------------------- -- line 1279 ---------------------------------------- . Some(BorrowRef { borrow }) . } . } . } . . impl Drop for BorrowRef<'_> { . #[inline] . fn drop(&mut self) { 290,770 ( 0.02%) let borrow = self.borrow.get(); . debug_assert!(is_reading(borrow)); 583,639 ( 0.03%) self.borrow.set(borrow - 1); . } . } . . impl Clone for BorrowRef<'_> { . #[inline] . fn clone(&self) -> Self { . // Since this Ref exists, we know the borrow flag . // is a reading borrow. -- line 1297 ---------------------------------------- -- line 1645 ---------------------------------------- . . struct BorrowRefMut<'b> { . borrow: &'b Cell, . } . . impl Drop for BorrowRefMut<'_> { . #[inline] . fn drop(&mut self) { 2,839,805 ( 0.17%) let borrow = self.borrow.get(); . debug_assert!(is_writing(borrow)); 5,430,320 ( 0.32%) self.borrow.set(borrow + 1); . } . } . . impl<'b> BorrowRefMut<'b> { . #[inline] . fn new(borrow: &'b Cell) -> Option> { . // NOTE: Unlike BorrowRefMut::clone, new is called to create the initial . // mutable reference, and so there must currently be no existing . // references. Thus, while clone increments the mutable refcount, here . // we explicitly only allow going from UNUSED to UNUSED - 1. 5,824,772 ( 0.34%) match borrow.get() { . UNUSED => { . borrow.set(UNUSED - 1); . Some(BorrowRefMut { borrow }) . } . _ => None, . } . } . -- line 1674 ---------------------------------------- -- line 1711 ---------------------------------------- . self.value . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl DerefMut for RefMut<'_, T> { . #[inline] . fn deref_mut(&mut self) -> &mut T { 270 ( 0.00%) self.value . } . } . . #[unstable(feature = "coerce_unsized", issue = "27732")] . impl<'b, T: ?Sized + Unsize, U: ?Sized> CoerceUnsized> for RefMut<'b, T> {} . . #[stable(feature = "std_guard_impls", since = "1.20.0")] . impl fmt::Display for RefMut<'_, T> { -- line 1727 ---------------------------------------- -- line 1909 ---------------------------------------- . /// ``` . #[inline(always)] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_unsafecell_get", since = "1.32.0")] . pub const fn get(&self) -> *mut T { . // We can just cast the pointer from `UnsafeCell` to `T` because of . // #[repr(transparent)]. This exploits libstd's special status, there is . // no guarantee for user code that this will work in future versions of the compiler! 2,345,184 ( 0.14%) self as *const UnsafeCell as *const T as *mut T . } . . /// Returns a mutable reference to the underlying data. . /// . /// This call borrows the `UnsafeCell` mutably (at compile-time) which . /// guarantees that we possess the only reference. . /// . /// # Examples -- line 1925 ---------------------------------------- 4,431,740 ( 0.26%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_ast_pretty/src/pp/ring.rs -------------------------------------------------------------------------------- Ir -- line 22 ---------------------------------------- . RingBuffer { data: VecDeque::new(), offset: 0 } . } . . pub fn is_empty(&self) -> bool { . self.data.is_empty() . } . . pub fn push(&mut self, value: T) -> usize { 229,804 ( 0.01%) let index = self.offset + self.data.len(); 721,732 ( 0.04%) self.data.push_back(value); . index . } . . pub fn clear(&mut self) { 11 ( 0.00%) self.data.clear(); . } . . pub fn index_of_first(&self) -> usize { . self.offset . } . . pub fn first(&self) -> Option<&T> { . self.data.front() . } . . pub fn first_mut(&mut self) -> Option<&mut T> { . self.data.front_mut() . } . 574,510 ( 0.03%) pub fn pop_first(&mut self) -> Option { . let first = self.data.pop_front()?; 459,608 ( 0.03%) self.offset += 1; 689,412 ( 0.04%) Some(first) 804,314 ( 0.05%) } . . pub fn last(&self) -> Option<&T> { . self.data.back() . } . . pub fn last_mut(&mut self) -> Option<&mut T> { . self.data.back_mut() . } -- line 63 ---------------------------------------- 574,510 ( 0.03%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_lexer/src/lib.rs -------------------------------------------------------------------------------- Ir -- line 38 ---------------------------------------- . #[derive(Debug)] . pub struct Token { . pub kind: TokenKind, . pub len: usize, . } . . impl Token { . fn new(kind: TokenKind, len: usize) -> Token { 699,939 ( 0.04%) Token { kind, len } . } . } . . /// Enum representing common lexeme types. . // perf note: Changing all `usize` to `u32` doesn't change performance. See #77629 92,940 ( 0.01%) #[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)] . pub enum TokenKind { . // Multi-char tokens: . /// "// comment" . LineComment { doc_style: Option }, . /// `/* block comment */` . /// . /// Block comments can be recursive, so the sequence like `/* /* */` . /// will not be considered terminated and will result in a parsing error. -- line 60 ---------------------------------------- -- line 192 ---------------------------------------- . /// Literal starts with "0x". . Hexadecimal, . /// Literal doesn't contain a prefix. . Decimal, . } . . /// `rustc` allows files to have a shebang, e.g. "#!/usr/bin/rustrun", . /// but shebang isn't a part of rust syntax. 35 ( 0.00%) pub fn strip_shebang(input: &str) -> Option { . // Shebang must start with `#!` literally, without any preceding whitespace. . // For simplicity we consider any line starting with `#!` a shebang, . // regardless of restrictions put on shebangs by specific platforms. . if let Some(input_tail) = input.strip_prefix("#!") { . // Ok, this is a shebang but if the next non-whitespace token is `[`, . // then it may be valid Rust code, so consider it Rust code. . let next_non_whitespace_token = tokenize(input_tail).map(|tok| tok.kind).find(|tok| { . !matches!( -- line 208 ---------------------------------------- -- line 213 ---------------------------------------- . ) . }); . if next_non_whitespace_token != Some(TokenKind::OpenBracket) { . // No other choice than to consider this a shebang. . return Some(2 + input_tail.lines().next().unwrap_or_default().len()); . } . } . None 40 ( 0.00%) } . . /// Parses the first token from the provided input string. 233,313 ( 0.01%) pub fn first_token(input: &str) -> Token { . debug_assert!(!input.is_empty()); 77,771 ( 0.00%) Cursor::new(input).advance_token() 311,084 ( 0.02%) } . . /// Creates an iterator that produces tokens from the input string. . pub fn tokenize(input: &str) -> impl Iterator + '_ { . let mut cursor = Cursor::new(input); . std::iter::from_fn(move || { . if cursor.is_eof() { . None . } else { -- line 235 ---------------------------------------- -- line 243 ---------------------------------------- . /// See [Rust language reference](https://doc.rust-lang.org/reference/whitespace.html) . /// for definitions of these classes. . pub fn is_whitespace(c: char) -> bool { . // This is Pattern_White_Space. . // . // Note that this set is stable (ie, it doesn't change with different . // Unicode versions), so it's ok to just hard-code the values. . 164,924 ( 0.01%) matches!( . c, . // Usual ASCII suspects . '\u{0009}' // \t . | '\u{000A}' // \n . | '\u{000B}' // vertical tab . | '\u{000C}' // form feed . | '\u{000D}' // \r . | '\u{0020}' // space -- line 259 ---------------------------------------- -- line 269 ---------------------------------------- . | '\u{2028}' // LINE SEPARATOR . | '\u{2029}' // PARAGRAPH SEPARATOR . ) . } . . /// True if `c` is valid as a first character of an identifier. . /// See [Rust language reference](https://doc.rust-lang.org/reference/identifiers.html) for . /// a formal definition of valid identifier name. 2 ( 0.00%) pub fn is_id_start(c: char) -> bool { . // This is XID_Start OR '_' (which formally is not a XID_Start). 45,936 ( 0.00%) c == '_' || unicode_xid::UnicodeXID::is_xid_start(c) 2 ( 0.00%) } . . /// True if `c` is valid as a non-first character of an identifier. . /// See [Rust language reference](https://doc.rust-lang.org/reference/identifiers.html) for . /// a formal definition of valid identifier name. . pub fn is_id_continue(c: char) -> bool { . unicode_xid::UnicodeXID::is_xid_continue(c) . } . . /// The passed string is lexically an identifier. 10 ( 0.00%) pub fn is_ident(string: &str) -> bool { . let mut chars = string.chars(); . if let Some(start) = chars.next() { . is_id_start(start) && chars.all(is_id_continue) . } else { . false . } 14 ( 0.00%) } . . impl Cursor<'_> { . /// Parses a token from the input string. 622,168 ( 0.04%) fn advance_token(&mut self) -> Token { . let first_char = self.bump().unwrap(); 301,397 ( 0.02%) let token_kind = match first_char { . // Slash, comment or block comment. 3,012 ( 0.00%) '/' => match self.first() { . '/' => self.line_comment(), . '*' => self.block_comment(), . _ => Slash, . }, . . // Whitespace sequence. . c if is_whitespace(c) => self.whitespace(), . . // Raw identifier, raw string literal or identifier. 448 ( 0.00%) 'r' => match (self.first(), self.second()) { . ('#', c1) if is_id_start(c1) => self.raw_ident(), . ('#', _) | ('"', _) => { . let (n_hashes, err) = self.raw_double_quoted_string(1); . let suffix_start = self.len_consumed(); . if err.is_none() { . self.eat_literal_suffix(); . } . let kind = RawStr { n_hashes, err }; . Literal { kind, suffix_start } . } . _ => self.ident_or_unknown_prefix(), . }, . . // Byte literal, byte string literal, raw byte string literal or identifier. 720 ( 0.00%) 'b' => match (self.first(), self.second()) { . ('\'', _) => { . self.bump(); . let terminated = self.single_quoted_string(); . let suffix_start = self.len_consumed(); . if terminated { . self.eat_literal_suffix(); . } . let kind = Byte { terminated }; -- line 338 ---------------------------------------- -- line 361 ---------------------------------------- . _ => self.ident_or_unknown_prefix(), . }, . . // Identifier (this should be checked after other variant that can . // start as identifier). . c if is_id_start(c) => self.ident_or_unknown_prefix(), . . // Numeric literal. 137,727 ( 0.01%) c @ '0'..='9' => { . let literal_kind = self.number(c); . let suffix_start = self.len_consumed(); . self.eat_literal_suffix(); 700 ( 0.00%) TokenKind::Literal { kind: literal_kind, suffix_start } . } . . // One-symbol tokens. 704 ( 0.00%) ';' => Semi, 33,528 ( 0.00%) ',' => Comma, 1,006 ( 0.00%) '.' => Dot, 12,668 ( 0.00%) '(' => OpenParen, 12,668 ( 0.00%) ')' => CloseParen, 818 ( 0.00%) '{' => OpenBrace, 818 ( 0.00%) '}' => CloseBrace, 374 ( 0.00%) '[' => OpenBracket, 374 ( 0.00%) ']' => CloseBracket, . '@' => At, 204 ( 0.00%) '#' => Pound, . '~' => Tilde, 4 ( 0.00%) '?' => Question, 1,854 ( 0.00%) ':' => Colon, . '$' => Dollar, 1,284 ( 0.00%) '=' => Eq, 50 ( 0.00%) '!' => Bang, 312 ( 0.00%) '<' => Lt, 898 ( 0.00%) '>' => Gt, 244 ( 0.00%) '-' => Minus, 406 ( 0.00%) '&' => And, 264 ( 0.00%) '|' => Or, 34 ( 0.00%) '+' => Plus, 22 ( 0.00%) '*' => Star, . '^' => Caret, 8 ( 0.00%) '%' => Percent, . . // Lifetime or character literal. 34,470 ( 0.00%) '\'' => self.lifetime_or_char(), . . // String literal. . '"' => { 24 ( 0.00%) let terminated = self.double_quoted_string(); . let suffix_start = self.len_consumed(); 16 ( 0.00%) if terminated { . self.eat_literal_suffix(); . } . let kind = Str { terminated }; 16 ( 0.00%) Literal { kind, suffix_start } . } . // Identifier starting with an emoji. Only lexed for graceful error recovery. . c if !c.is_ascii() && unic_emoji_char::is_emoji(c) => { . self.fake_ident_or_unknown_prefix() . } . _ => Unknown, . }; . Token::new(token_kind, self.len_consumed()) 699,939 ( 0.04%) } . . fn line_comment(&mut self) -> TokenKind { . debug_assert!(self.prev() == '/' && self.first() == '/'); . self.bump(); . 2,120 ( 0.00%) let doc_style = match self.first() { . // `//!` is an inner line doc comment. . '!' => Some(DocStyle::Inner), . // `////` (more than 3 slashes) is not considered a doc comment. 1,338 ( 0.00%) '/' if self.second() != '/' => Some(DocStyle::Outer), . _ => None, . }; . 30,144 ( 0.00%) self.eat_while(|c| c != '\n'); 2,259 ( 0.00%) LineComment { doc_style } . } . . fn block_comment(&mut self) -> TokenKind { . debug_assert!(self.prev() == '/' && self.first() == '*'); . self.bump(); . . let doc_style = match self.first() { . // `/*!` is an inner block doc comment. -- line 447 ---------------------------------------- -- line 474 ---------------------------------------- . } . . BlockComment { doc_style, terminated: depth == 0 } . } . . fn whitespace(&mut self) -> TokenKind { . debug_assert!(is_whitespace(self.prev())); . self.eat_while(is_whitespace); 21,815 ( 0.00%) Whitespace . } . . fn raw_ident(&mut self) -> TokenKind { . debug_assert!(self.prev() == 'r' && self.first() == '#' && is_id_start(self.second())); . // Eat "#" symbol. . self.bump(); . // Eat the identifier part of RawIdent. . self.eat_identifier(); . RawIdent . } . 46,470 ( 0.00%) fn ident_or_unknown_prefix(&mut self) -> TokenKind { . debug_assert!(is_id_start(self.prev())); . // Start is already eaten, eat the rest of identifier. 18,588 ( 0.00%) self.eat_while(is_id_continue); . // Known prefixes must have been handled earlier. So if . // we see a prefix here, it is definitely an unknown prefix. 18,588 ( 0.00%) match self.first() { . '#' | '"' | '\'' => UnknownPrefix, 9,294 ( 0.00%) c if !c.is_ascii() && unic_emoji_char::is_emoji(c) => { . self.fake_ident_or_unknown_prefix() . } 9,294 ( 0.00%) _ => Ident, . } 37,176 ( 0.00%) } . . fn fake_ident_or_unknown_prefix(&mut self) -> TokenKind { . // Start is already eaten, eat the rest of identifier. . self.eat_while(|c| { . unicode_xid::UnicodeXID::is_xid_continue(c) . || (!c.is_ascii() && unic_emoji_char::is_emoji(c)) . || c == '\u{200d}' . }); -- line 515 ---------------------------------------- -- line 519 ---------------------------------------- . '#' | '"' | '\'' => UnknownPrefix, . _ => InvalidIdent, . } . } . . fn number(&mut self, first_digit: char) -> LiteralKind { . debug_assert!('0' <= self.prev() && self.prev() <= '9'); . let mut base = Base::Decimal; 280 ( 0.00%) if first_digit == '0' { . // Attempt to parse encoding base. 235 ( 0.00%) let has_digits = match self.first() { . 'b' => { . base = Base::Binary; . self.bump(); . self.eat_decimal_digits() . } . 'o' => { . base = Base::Octal; . self.bump(); -- line 537 ---------------------------------------- -- line 538 ---------------------------------------- . self.eat_decimal_digits() . } . 'x' => { . base = Base::Hexadecimal; . self.bump(); . self.eat_hexadecimal_digits() . } . // Not a base prefix. 141 ( 0.00%) '0'..='9' | '_' | '.' | 'e' | 'E' => { . self.eat_decimal_digits(); . true . } . // Just a 0. . _ => return Int { base, empty_int: false }, . }; . // Base prefix was provided, but there were no digits . // after it, e.g. "0x". -- line 554 ---------------------------------------- -- line 555 ---------------------------------------- . if !has_digits { . return Int { base, empty_int: true }; . } . } else { . // No base prefix, parse number in the usual way. . self.eat_decimal_digits(); . }; . 534 ( 0.00%) match self.first() { . // Don't be greedy if this is actually an . // integer literal followed by field/method access or a range pattern . // (`0..2` and `12.foo()`) 12 ( 0.00%) '.' if self.second() != '.' && !is_id_start(self.second()) => { . // might have stuff after the ., and if it does, it needs to start . // with a number . self.bump(); . let mut empty_exponent = false; . if self.first().is_digit(10) { . self.eat_decimal_digits(); . match self.first() { . 'e' | 'E' => { -- line 575 ---------------------------------------- -- line 585 ---------------------------------------- . self.bump(); . let empty_exponent = !self.eat_float_exponent(); . Float { base, empty_exponent } . } . _ => Int { base, empty_int: false }, . } . } . 80,430 ( 0.00%) fn lifetime_or_char(&mut self) -> TokenKind { . debug_assert!(self.prev() == '\''); . 22,980 ( 0.00%) let can_be_a_lifetime = if self.second() == '\'' { . // It's surely not a lifetime. . false . } else { . // If the first symbol is valid for identifier, it can be a lifetime. . // Also check if it's a number for a better error reporting (so '0 will . // be reported as invalid lifetime and not as unterminated char literal). . is_id_start(self.first()) || self.first().is_digit(10) . }; . 11,326 ( 0.00%) if !can_be_a_lifetime { 34,002 ( 0.00%) let terminated = self.single_quoted_string(); . let suffix_start = self.len_consumed(); 22,668 ( 0.00%) if terminated { . self.eat_literal_suffix(); . } . let kind = Char { terminated }; 45,336 ( 0.00%) return Literal { kind, suffix_start }; . } . . // Either a lifetime or a character literal with . // length greater than 1. . . let starts_with_number = self.first().is_digit(10); . . // Skip the literal contents. . // First symbol can be a number (which isn't a valid identifier start), . // so skip it without any checks. . self.bump(); 312 ( 0.00%) self.eat_while(is_id_continue); . . // Check if after skipping literal contents we've met a closing . // single quote (which means that user attempted to create a . // string with single quotes). 312 ( 0.00%) if self.first() == '\'' { . self.bump(); . let kind = Char { terminated: true }; . Literal { kind, suffix_start: self.len_consumed() } . } else { 312 ( 0.00%) Lifetime { starts_with_number } . } 68,940 ( 0.00%) } . . fn single_quoted_string(&mut self) -> bool { . debug_assert!(self.prev() == '\''); . // Check if it's a one-symbol literal. 22,684 ( 0.00%) if self.second() == '\'' && self.first() != '\\' { . self.bump(); . self.bump(); . return true; . } . . // Literal has more than one symbol. . . // Parse until either quotes are terminated or error is detected. . loop { 529,784 ( 0.03%) match self.first() { . // Quotes are terminated, finish parsing. . '\'' => { . self.bump(); . return true; . } . // Probably beginning of the comment, which we don't want to include . // to the error report. . '/' => break, -- line 660 ---------------------------------------- -- line 670 ---------------------------------------- . // Skip the character. . _ => { . self.bump(); . } . } . } . // String was not terminated. . false 11,334 ( 0.00%) } . . /// Eats double-quoted string and returns true . /// if string is terminated. . fn double_quoted_string(&mut self) -> bool { . debug_assert!(self.prev() == '"'); . while let Some(c) = self.bump() { 968 ( 0.00%) match c { . '"' => { . return true; . } 32 ( 0.00%) '\\' if self.first() == '\\' || self.first() == '"' => { . // Bump again to skip escaped character. . self.bump(); . } . _ => (), . } . } . // End of file reached. . false 8 ( 0.00%) } . . /// Eats the double-quoted string and returns `n_hashes` and an error if encountered. . fn raw_double_quoted_string(&mut self, prefix_len: usize) -> (u16, Option) { . // Wrap the actual function to handle the error with too many hashes. . // This way, it eats the whole raw string. . let (n_hashes, err) = self.raw_string_unvalidated(prefix_len); . // Only up to 65535 `#`s are allowed in raw strings . match u16::try_from(n_hashes) { -- line 706 ---------------------------------------- -- line 773 ---------------------------------------- . max_hashes = n_end_hashes; . } . } . } . . fn eat_decimal_digits(&mut self) -> bool { . let mut has_digits = false; . loop { 188 ( 0.00%) match self.first() { . '_' => { . self.bump(); . } 282 ( 0.00%) '0'..='9' => { . has_digits = true; . self.bump(); . } . _ => break, . } . } . has_digits 186 ( 0.00%) } . . fn eat_hexadecimal_digits(&mut self) -> bool { . let mut has_digits = false; . loop { . match self.first() { . '_' => { . self.bump(); . } -- line 801 ---------------------------------------- -- line 816 ---------------------------------------- . if self.first() == '-' || self.first() == '+' { . self.bump(); . } . self.eat_decimal_digits() . } . . // Eats the suffix of the literal, e.g. "_u8". . fn eat_literal_suffix(&mut self) { 22,964 ( 0.00%) self.eat_identifier(); . } . . // Eats the identifier. 34,446 ( 0.00%) fn eat_identifier(&mut self) { . if !is_id_start(self.first()) { . return; . } . self.bump(); . . self.eat_while(is_id_continue); 45,928 ( 0.00%) } . } 1,054,747 ( 0.06%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_typeck/src/check/writeback.rs -------------------------------------------------------------------------------- Ir -- line 30 ---------------------------------------- . // the final TypeckResults since all of the types should have been . // inferred once typeck is done. . // When type inference is running however, having to update the typeck . // typeck results every time a new type is inferred would be unreasonably slow, . // so instead all of the replacement happens at the end in . // resolve_type_vars_in_body, which creates a new TypeTables which . // doesn't contain any inference types. . impl<'a, 'tcx> FnCtxt<'a, 'tcx> { 1,386 ( 0.00%) pub fn resolve_type_vars_in_body( . &self, . body: &'tcx hir::Body<'tcx>, . ) -> &'tcx ty::TypeckResults<'tcx> { 1,540 ( 0.00%) let item_id = self.tcx.hir().body_owner(body.id()); 924 ( 0.00%) let item_def_id = self.tcx.hir().local_def_id(item_id); . . // This attribute causes us to dump some writeback information . // in the form of errors, which is used for unit tests. . let rustc_dump_user_substs = 924 ( 0.00%) self.tcx.has_attr(item_def_id.to_def_id(), sym::rustc_dump_user_substs); . . let mut wbcx = WritebackCx::new(self, body, rustc_dump_user_substs); 616 ( 0.00%) for param in body.params { 1,845 ( 0.00%) wbcx.visit_node_id(param.pat.span, param.hir_id); . } . // Type only exists for constants and statics, not functions. 1,694 ( 0.00%) match self.tcx.hir().body_owner_kind(item_id) { . hir::BodyOwnerKind::Const | hir::BodyOwnerKind::Static(_) => { 50 ( 0.00%) wbcx.visit_node_id(body.value.span, item_id); . } . hir::BodyOwnerKind::Closure | hir::BodyOwnerKind::Fn => (), . } . wbcx.visit_body(body); 154 ( 0.00%) wbcx.visit_min_capture_map(); 154 ( 0.00%) wbcx.eval_closure_size(); 154 ( 0.00%) wbcx.visit_fake_reads_map(); 154 ( 0.00%) wbcx.visit_closures(); 154 ( 0.00%) wbcx.visit_liberated_fn_sigs(); 154 ( 0.00%) wbcx.visit_fru_field_types(); 462 ( 0.00%) wbcx.visit_opaque_types(body.value.span); 154 ( 0.00%) wbcx.visit_coercion_casts(); 154 ( 0.00%) wbcx.visit_user_provided_tys(); 154 ( 0.00%) wbcx.visit_user_provided_sigs(); 154 ( 0.00%) wbcx.visit_generator_interior_types(); . . let used_trait_imports = 308 ( 0.00%) mem::take(&mut self.typeck_results.borrow_mut().used_trait_imports); . debug!("used_trait_imports({:?}) = {:?}", item_def_id, used_trait_imports); 308 ( 0.00%) wbcx.typeck_results.used_trait_imports = used_trait_imports; . 770 ( 0.00%) wbcx.typeck_results.treat_byte_string_as_slice = 154 ( 0.00%) mem::take(&mut self.typeck_results.borrow_mut().treat_byte_string_as_slice); . 462 ( 0.00%) if self.is_tainted_by_errors() { . // FIXME(eddyb) keep track of `ErrorReported` from where the error was emitted. . wbcx.typeck_results.tainted_by_errors = Some(ErrorReported); . } . . debug!("writeback: typeck results for {:?} are {:#?}", item_def_id, wbcx.typeck_results); . 308 ( 0.00%) self.tcx.arena.alloc(wbcx.typeck_results) 1,386 ( 0.00%) } . } . . /////////////////////////////////////////////////////////////////////////// . // The Writeback context. This visitor walks the HIR, checking the . // fn-specific typeck results to find references to types or regions. It . // resolves those regions to remove inference variables and writes the . // final result back into the master typeck results in the tcx. Here and . // there, it applies a few ad-hoc checks that were not convenient to -- line 98 ---------------------------------------- -- line 109 ---------------------------------------- . } . . impl<'cx, 'tcx> WritebackCx<'cx, 'tcx> { . fn new( . fcx: &'cx FnCtxt<'cx, 'tcx>, . body: &'tcx hir::Body<'tcx>, . rustc_dump_user_substs: bool, . ) -> WritebackCx<'cx, 'tcx> { 308 ( 0.00%) let owner = body.id().hir_id.owner; . 1,386 ( 0.00%) WritebackCx { . fcx, 616 ( 0.00%) typeck_results: ty::TypeckResults::new(owner), . body, . rustc_dump_user_substs, . } . } . . fn tcx(&self) -> TyCtxt<'tcx> { 468 ( 0.00%) self.fcx.tcx . } . . fn write_ty_to_typeck_results(&mut self, hir_id: hir::HirId, ty: Ty<'tcx>) { . debug!("write_ty_to_typeck_results({:?}, {:?})", hir_id, ty); 85,455 ( 0.00%) assert!(!ty.needs_infer() && !ty.has_placeholders() && !ty.has_free_regions()); 113,928 ( 0.01%) self.typeck_results.node_types_mut().insert(hir_id, ty); . } . . // Hacky hack: During type-checking, we treat *all* operators . // as potentially overloaded. But then, during writeback, if . // we observe that something like `a+b` is (known to be) . // operating on scalars, we clear the overload. . fn fix_scalar_builtin_expr(&mut self, e: &hir::Expr<'_>) { 184,065 ( 0.01%) match e.kind { 5 ( 0.00%) hir::ExprKind::Unary(hir::UnOp::Neg | hir::UnOp::Not, inner) => { 20 ( 0.00%) let inner_ty = self.fcx.node_ty(inner.hir_id); . let inner_ty = self.fcx.resolve_vars_if_possible(inner_ty); . . if inner_ty.is_scalar() { 5 ( 0.00%) let mut typeck_results = self.fcx.typeck_results.borrow_mut(); 30 ( 0.00%) typeck_results.type_dependent_defs_mut().remove(e.hir_id); 10 ( 0.00%) typeck_results.node_substs_mut().remove(e.hir_id); . } . } . hir::ExprKind::Binary(ref op, lhs, rhs) | hir::ExprKind::AssignOp(ref op, lhs, rhs) => { 1,205 ( 0.00%) let lhs_ty = self.fcx.node_ty(lhs.hir_id); . let lhs_ty = self.fcx.resolve_vars_if_possible(lhs_ty); . 964 ( 0.00%) let rhs_ty = self.fcx.node_ty(rhs.hir_id); . let rhs_ty = self.fcx.resolve_vars_if_possible(rhs_ty); . . if lhs_ty.is_scalar() && rhs_ty.is_scalar() { 166 ( 0.00%) let mut typeck_results = self.fcx.typeck_results.borrow_mut(); 830 ( 0.00%) typeck_results.type_dependent_defs_mut().remove(e.hir_id); 166 ( 0.00%) typeck_results.node_substs_mut().remove(e.hir_id); . 354 ( 0.00%) match e.kind { . hir::ExprKind::Binary(..) => { 620 ( 0.00%) if !op.node.is_by_value() { 73 ( 0.00%) let mut adjustments = typeck_results.adjustments_mut(); 438 ( 0.00%) if let Some(a) = adjustments.get_mut(lhs.hir_id) { . a.pop(); . } 292 ( 0.00%) if let Some(a) = adjustments.get_mut(rhs.hir_id) { . a.pop(); . } . } . } . hir::ExprKind::AssignOp(..) 55 ( 0.00%) if let Some(a) = typeck_results.adjustments_mut().get_mut(lhs.hir_id) => . { . a.pop(); . } . _ => {} . } . } . } . _ => {} -- line 186 ---------------------------------------- -- line 187 ---------------------------------------- . } . } . . // Similar to operators, indexing is always assumed to be overloaded . // Here, correct cases where an indexing expression can be simplified . // to use builtin indexing because the index type is known to be . // usize-ish . fn fix_index_builtin_expr(&mut self, e: &hir::Expr<'_>) { 53,163 ( 0.00%) if let hir::ExprKind::Index(ref base, ref index) = e.kind { 108 ( 0.00%) let mut typeck_results = self.fcx.typeck_results.borrow_mut(); . . // All valid indexing looks like this; might encounter non-valid indexes at this point. 108 ( 0.00%) let base_ty = typeck_results 54 ( 0.00%) .expr_ty_adjusted_opt(base) . .map(|t| self.fcx.resolve_vars_if_possible(t).kind()); . if base_ty.is_none() { . // When encountering `return [0][0]` outside of a `fn` body we can encounter a base . // that isn't in the type table. We assume more relevant errors have already been . // emitted, so we delay an ICE if none have. (#64638) . self.tcx().sess.delay_span_bug(e.span, &format!("bad base: `{:?}`", base)); . } 108 ( 0.00%) if let Some(ty::Ref(_, base_ty, _)) = base_ty { 216 ( 0.00%) let index_ty = typeck_results.expr_ty_adjusted_opt(index).unwrap_or_else(|| { . // When encountering `return [0][0]` outside of a `fn` body we would attempt . // to access an unexistend index. We assume that more relevant errors will . // already have been emitted, so we only gate on this with an ICE if no . // error has been emitted. (#64638) . self.fcx.tcx.ty_error_with_message( . e.span, . &format!("bad index {:?} for base: `{:?}`", index, base), . ) . }); . let index_ty = self.fcx.resolve_vars_if_possible(index_ty); . 228 ( 0.00%) if base_ty.builtin_index().is_some() && index_ty == self.fcx.tcx.types.usize { . // Remove the method call record 198 ( 0.00%) typeck_results.type_dependent_defs_mut().remove(e.hir_id); 198 ( 0.00%) typeck_results.node_substs_mut().remove(e.hir_id); . 330 ( 0.00%) if let Some(a) = typeck_results.adjustments_mut().get_mut(base.hir_id) { . // Discard the need for a mutable borrow . . // Extra adjustment made when indexing causes a drop . // of size information - we need to get rid of it . // Since this is "after" the other adjustment to be . // discarded, we do an extra `pop()` 66 ( 0.00%) if let Some(Adjustment { . kind: Adjust::Pointer(PointerCast::Unsize), .. . }) = a.pop() . { . // So the borrow discard actually happens here . a.pop(); . } . } . } -- line 241 ---------------------------------------- -- line 248 ---------------------------------------- . // Impl of Visitor for Resolver . // . // This is the master code which walks the AST. It delegates most of . // the heavy lifting to the generic visit and resolve functions . // below. In general, a function is made into a `visitor` if it must . // traffic in node-ids or update typeck results in the type context etc. . . impl<'cx, 'tcx> Visitor<'tcx> for WritebackCx<'cx, 'tcx> { 236,493 ( 0.01%) fn visit_expr(&mut self, e: &'tcx hir::Expr<'tcx>) { 26,277 ( 0.00%) self.fix_scalar_builtin_expr(e); . self.fix_index_builtin_expr(e); . 131,385 ( 0.01%) self.visit_node_id(e.span, e.hir_id); . 105,108 ( 0.01%) match e.kind { 44 ( 0.00%) hir::ExprKind::Closure(_, _, body, _, _) => { 132 ( 0.00%) let body = self.fcx.tcx.hir().body(body); 44 ( 0.00%) for param in body.params { 110 ( 0.00%) self.visit_node_id(e.span, param.hir_id); . } . . self.visit_body(body); . } 41 ( 0.00%) hir::ExprKind::Struct(_, fields, _) => { . for field in fields { 332 ( 0.00%) self.visit_field_id(field.hir_id); . } . } . hir::ExprKind::Field(..) => { 1,015 ( 0.00%) self.visit_field_id(e.hir_id); . } . hir::ExprKind::ConstBlock(anon_const) => { . self.visit_node_id(e.span, anon_const.hir_id); . . let body = self.tcx().hir().body(anon_const.body); . self.visit_body(body); . } . _ => {} . } . 78,831 ( 0.00%) intravisit::walk_expr(self, e); 210,216 ( 0.01%) } . 4,455 ( 0.00%) fn visit_block(&mut self, b: &'tcx hir::Block<'tcx>) { 1,980 ( 0.00%) self.visit_node_id(b.span, b.hir_id); . intravisit::walk_block(self, b); 768 ( 0.00%) } . 10,602 ( 0.00%) fn visit_pat(&mut self, p: &'tcx hir::Pat<'tcx>) { 4,994 ( 0.00%) match p.kind { . hir::PatKind::Binding(..) => { 896 ( 0.00%) let typeck_results = self.fcx.typeck_results.borrow(); 1,344 ( 0.00%) if let Some(bm) = 3,584 ( 0.00%) typeck_results.extract_binding_mode(self.tcx().sess, p.hir_id, p.span) . { 1,344 ( 0.00%) self.typeck_results.pat_binding_modes_mut().insert(p.hir_id, bm); . } . } 27 ( 0.00%) hir::PatKind::Struct(_, fields, _) => { . for field in fields { 204 ( 0.00%) self.visit_field_id(field.hir_id); . } . } . _ => {} . }; . 4,712 ( 0.00%) self.visit_pat_adjustments(p.span, p.hir_id); . 5,890 ( 0.00%) self.visit_node_id(p.span, p.hir_id); 3,534 ( 0.00%) intravisit::walk_pat(self, p); 9,424 ( 0.00%) } . 984 ( 0.00%) fn visit_local(&mut self, l: &'tcx hir::Local<'tcx>) { . intravisit::walk_local(self, l); 738 ( 0.00%) let var_ty = self.fcx.local_ty(l.span, l.hir_id).decl_ty; . let var_ty = self.resolve(var_ty, &l.span); . self.write_ty_to_typeck_results(l.hir_id, var_ty); . } . 1,183 ( 0.00%) fn visit_ty(&mut self, hir_ty: &'tcx hir::Ty<'tcx>) { 181 ( 0.00%) intravisit::walk_ty(self, hir_ty); 700 ( 0.00%) let ty = self.fcx.node_ty(hir_ty.hir_id); 169 ( 0.00%) let ty = self.resolve(ty, &hir_ty.span); . self.write_ty_to_typeck_results(hir_ty.hir_id, ty); . } . . fn visit_infer(&mut self, inf: &'tcx hir::InferArg) { . intravisit::walk_inf(self, inf); . // Ignore cases where the inference is a const. . if let Some(ty) = self.fcx.node_ty_opt(inf.hir_id) { . let ty = self.resolve(ty, &inf.span); . self.write_ty_to_typeck_results(inf.hir_id, ty); . } . } . } . . impl<'cx, 'tcx> WritebackCx<'cx, 'tcx> { 1,078 ( 0.00%) fn eval_closure_size(&mut self) { . let mut res: FxHashMap> = Default::default(); 462 ( 0.00%) for (closure_def_id, data) in self.fcx.typeck_results.borrow().closure_size_eval.iter() { . let closure_hir_id = . self.tcx().hir().local_def_id_to_hir_id(closure_def_id.expect_local()); . . let data = self.resolve(*data, &closure_hir_id); . . res.insert(*closure_def_id, data); . } . 1,540 ( 0.00%) self.typeck_results.closure_size_eval = res; 1,232 ( 0.00%) } 1,078 ( 0.00%) fn visit_min_capture_map(&mut self) { . let mut min_captures_wb = ty::MinCaptureInformationMap::with_capacity_and_hasher( 308 ( 0.00%) self.fcx.typeck_results.borrow().closure_min_captures.len(), . Default::default(), . ); . for (closure_def_id, root_min_captures) in 308 ( 0.00%) self.fcx.typeck_results.borrow().closure_min_captures.iter() . { . let mut root_var_map_wb = ty::RootVariableMinCaptureList::with_capacity_and_hasher( . root_min_captures.len(), . Default::default(), . ); . for (var_hir_id, min_list) in root_min_captures.iter() { . let min_list_wb = min_list . .iter() . .map(|captured_place| { 30 ( 0.00%) let locatable = captured_place.info.path_expr_id.unwrap_or_else(|| { . self.tcx().hir().local_def_id_to_hir_id(closure_def_id.expect_local()) . }); . . self.resolve(captured_place.clone(), &locatable) . }) . .collect(); 20 ( 0.00%) root_var_map_wb.insert(*var_hir_id, min_list_wb); . } 20 ( 0.00%) min_captures_wb.insert(*closure_def_id, root_var_map_wb); . } . 1,386 ( 0.00%) self.typeck_results.closure_min_captures = min_captures_wb; 1,232 ( 0.00%) } . 1,078 ( 0.00%) fn visit_fake_reads_map(&mut self) { . let mut resolved_closure_fake_reads: FxHashMap< . DefId, . Vec<(HirPlace<'tcx>, FakeReadCause, hir::HirId)>, . > = Default::default(); . for (closure_def_id, fake_reads) in 308 ( 0.00%) self.fcx.typeck_results.borrow().closure_fake_reads.iter() . { . let mut resolved_fake_reads = Vec::<(HirPlace<'tcx>, FakeReadCause, hir::HirId)>::new(); . for (place, cause, hir_id) in fake_reads.iter() { . let locatable = . self.tcx().hir().local_def_id_to_hir_id(closure_def_id.expect_local()); . . let resolved_fake_read = self.resolve(place.clone(), &locatable); . resolved_fake_reads.push((resolved_fake_read, *cause, *hir_id)); . } 44 ( 0.00%) resolved_closure_fake_reads.insert(*closure_def_id, resolved_fake_reads); . } 1,386 ( 0.00%) self.typeck_results.closure_fake_reads = resolved_closure_fake_reads; 1,232 ( 0.00%) } . 1,078 ( 0.00%) fn visit_closures(&mut self) { 308 ( 0.00%) let fcx_typeck_results = self.fcx.typeck_results.borrow(); 462 ( 0.00%) assert_eq!(fcx_typeck_results.hir_owner, self.typeck_results.hir_owner); . let common_hir_owner = fcx_typeck_results.hir_owner; . 154 ( 0.00%) for (id, origin) in fcx_typeck_results.closure_kind_origins().iter() { . let hir_id = hir::HirId { owner: common_hir_owner, local_id: *id }; . let place_span = origin.0; . let place = self.resolve(origin.1.clone(), &place_span); . self.typeck_results.closure_kind_origins_mut().insert(hir_id, (place_span, place)); . } 1,232 ( 0.00%) } . 1,078 ( 0.00%) fn visit_coercion_casts(&mut self) { 308 ( 0.00%) let fcx_typeck_results = self.fcx.typeck_results.borrow(); 154 ( 0.00%) let fcx_coercion_casts = fcx_typeck_results.coercion_casts(); 308 ( 0.00%) assert_eq!(fcx_typeck_results.hir_owner, self.typeck_results.hir_owner); . . for local_id in fcx_coercion_casts { . self.typeck_results.set_coercion_cast(*local_id); . } 1,232 ( 0.00%) } . 1,232 ( 0.00%) fn visit_user_provided_tys(&mut self) { 308 ( 0.00%) let fcx_typeck_results = self.fcx.typeck_results.borrow(); 616 ( 0.00%) assert_eq!(fcx_typeck_results.hir_owner, self.typeck_results.hir_owner); . let common_hir_owner = fcx_typeck_results.hir_owner; . . let mut errors_buffer = Vec::new(); 382 ( 0.00%) for (&local_id, c_ty) in fcx_typeck_results.user_provided_types().iter() { . let hir_id = hir::HirId { owner: common_hir_owner, local_id }; . . if cfg!(debug_assertions) && c_ty.needs_infer() { . span_bug!( . hir_id.to_span(self.fcx.tcx), . "writeback: `{:?}` has inference variables", . c_ty . ); . }; . 1,026 ( 0.00%) self.typeck_results.user_provided_types_mut().insert(hir_id, *c_ty); . 763 ( 0.00%) if let ty::UserType::TypeOf(_, user_substs) = c_ty.value { 214 ( 0.00%) if self.rustc_dump_user_substs { . // This is a unit-testing mechanism. . let span = self.tcx().hir().span(hir_id); . // We need to buffer the errors in order to guarantee a consistent . // order when emitting them. . let err = self . .tcx() . .sess . .struct_span_err(span, &format!("user substs: {:?}", user_substs)); . err.buffer(&mut errors_buffer); . } . } . } . 154 ( 0.00%) if !errors_buffer.is_empty() { . errors_buffer.sort_by_key(|diag| diag.span.primary_span()); . for diag in errors_buffer.drain(..) { . self.tcx().sess.diagnostic().emit_diagnostic(&diag); . } . } 1,232 ( 0.00%) } . 1,078 ( 0.00%) fn visit_user_provided_sigs(&mut self) { 308 ( 0.00%) let fcx_typeck_results = self.fcx.typeck_results.borrow(); 308 ( 0.00%) assert_eq!(fcx_typeck_results.hir_owner, self.typeck_results.hir_owner); . 44 ( 0.00%) for (&def_id, c_sig) in fcx_typeck_results.user_provided_sigs.iter() { . if cfg!(debug_assertions) && c_sig.needs_infer() { . span_bug!( . self.fcx.tcx.hir().span_if_local(def_id).unwrap(), . "writeback: `{:?}` has inference variables", . c_sig . ); . }; . 132 ( 0.00%) self.typeck_results.user_provided_sigs.insert(def_id, *c_sig); . } 1,232 ( 0.00%) } . 770 ( 0.00%) fn visit_generator_interior_types(&mut self) { 308 ( 0.00%) let fcx_typeck_results = self.fcx.typeck_results.borrow(); 308 ( 0.00%) assert_eq!(fcx_typeck_results.hir_owner, self.typeck_results.hir_owner); 924 ( 0.00%) self.typeck_results.generator_interior_types = 308 ( 0.00%) fcx_typeck_results.generator_interior_types.clone(); 924 ( 0.00%) } . 2,464 ( 0.00%) #[instrument(skip(self, span), level = "debug")] . fn visit_opaque_types(&mut self, span: Span) { 154 ( 0.00%) let opaque_types = self.fcx.infcx.inner.borrow().opaque_types.clone(); 616 ( 0.00%) for (opaque_type_key, opaque_defn) in opaque_types { . let hir_id = . self.tcx().hir().local_def_id_to_hir_id(opaque_type_key.def_id.expect_local()); . let instantiated_ty = self.resolve(opaque_defn.concrete_ty, &hir_id); . . debug_assert!(!instantiated_ty.has_escaping_bound_vars()); . . let opaque_type_key = self.fcx.fully_resolve(opaque_type_key).unwrap(); . -- line 510 ---------------------------------------- -- line 552 ---------------------------------------- . // in some other location, or we'll end up emitting an error due . // to the lack of defining usage . if !skip_add { . self.typeck_results.concrete_opaque_types.insert(opaque_type_key.def_id); . } . } . } . 2,022 ( 0.00%) fn visit_field_id(&mut self, hir_id: hir::HirId) { 1,685 ( 0.00%) if let Some(index) = self.fcx.typeck_results.borrow_mut().field_indices_mut().remove(hir_id) . { 1,011 ( 0.00%) self.typeck_results.field_indices_mut().insert(hir_id, index); . } 2,359 ( 0.00%) } . 507,366 ( 0.03%) #[instrument(skip(self, span), level = "debug")] . fn visit_node_id(&mut self, span: Span, hir_id: hir::HirId) { . // Export associated path extensions and method resolutions. 112,748 ( 0.01%) if let Some(def) = 84,561 ( 0.00%) self.fcx.typeck_results.borrow_mut().type_dependent_defs_mut().remove(hir_id) . { 952 ( 0.00%) self.typeck_results.type_dependent_defs_mut().insert(hir_id, def); . } . . // Resolve any borrowings for the node with id `node_id` . self.visit_adjustments(span, hir_id); . . // Resolve the type of the node with id `node_id` 112,748 ( 0.01%) let n_ty = self.fcx.node_ty(hir_id); . let n_ty = self.resolve(n_ty, &span); . self.write_ty_to_typeck_results(hir_id, n_ty); . debug!(?n_ty); . . // Resolve any substitutions 169,122 ( 0.01%) if let Some(substs) = self.fcx.typeck_results.borrow().node_substs_opt(hir_id) { . let substs = self.resolve(substs, &span); . debug!("write_substs_to_tcx({:?}, {:?})", hir_id, substs); . assert!(!substs.needs_infer() && !substs.has_placeholders()); 972 ( 0.00%) self.typeck_results.node_substs_mut().insert(hir_id, substs); . } . } . . #[instrument(skip(self, span), level = "debug")] . fn visit_adjustments(&mut self, span: Span, hir_id: hir::HirId) { 84,561 ( 0.00%) let adjustment = self.fcx.typeck_results.borrow_mut().adjustments_mut().remove(hir_id); 140,935 ( 0.01%) match adjustment { . None => { . debug!("no adjustments for node"); . } . . Some(adjustment) => { 2,258 ( 0.00%) let resolved_adjustment = self.resolve(adjustment, &span); . debug!(?resolved_adjustment); 6,774 ( 0.00%) self.typeck_results.adjustments_mut().insert(hir_id, resolved_adjustment); . } . } . } . . #[instrument(skip(self, span), level = "debug")] . fn visit_pat_adjustments(&mut self, span: Span, hir_id: hir::HirId) { 3,534 ( 0.00%) let adjustment = self.fcx.typeck_results.borrow_mut().pat_adjustments_mut().remove(hir_id); 2,356 ( 0.00%) match adjustment { . None => { . debug!("no pat_adjustments for node"); . } . . Some(adjustment) => { 10 ( 0.00%) let resolved_adjustment = self.resolve(adjustment, &span); . debug!(?resolved_adjustment); 6 ( 0.00%) self.typeck_results.pat_adjustments_mut().insert(hir_id, resolved_adjustment); . } . } . } . 1,232 ( 0.00%) fn visit_liberated_fn_sigs(&mut self) { 308 ( 0.00%) let fcx_typeck_results = self.fcx.typeck_results.borrow(); 616 ( 0.00%) assert_eq!(fcx_typeck_results.hir_owner, self.typeck_results.hir_owner); . let common_hir_owner = fcx_typeck_results.hir_owner; . 818 ( 0.00%) for (&local_id, &fn_sig) in fcx_typeck_results.liberated_fn_sigs().iter() { 498 ( 0.00%) let hir_id = hir::HirId { owner: common_hir_owner, local_id }; . let fn_sig = self.resolve(fn_sig, &hir_id); 498 ( 0.00%) self.typeck_results.liberated_fn_sigs_mut().insert(hir_id, fn_sig); . } 1,232 ( 0.00%) } . 1,232 ( 0.00%) fn visit_fru_field_types(&mut self) { 308 ( 0.00%) let fcx_typeck_results = self.fcx.typeck_results.borrow(); 616 ( 0.00%) assert_eq!(fcx_typeck_results.hir_owner, self.typeck_results.hir_owner); . let common_hir_owner = fcx_typeck_results.hir_owner; . 154 ( 0.00%) for (&local_id, ftys) in fcx_typeck_results.fru_field_types().iter() { . let hir_id = hir::HirId { owner: common_hir_owner, local_id }; . let ftys = self.resolve(ftys.clone(), &hir_id); . self.typeck_results.fru_field_types_mut().insert(hir_id, ftys); . } 1,232 ( 0.00%) } . 7 ( 0.00%) fn resolve(&mut self, x: T, span: &dyn Locatable) -> T . where . T: TypeFoldable<'tcx>, . { 59,425 ( 0.00%) let mut resolver = Resolver::new(self.fcx, span, self.body); 1,165 ( 0.00%) let x = x.fold_with(&mut resolver); . if cfg!(debug_assertions) && x.needs_infer() { . span_bug!(span.to_span(self.fcx.tcx), "writeback: `{:?}` has inference variables", x); . } . . // We may have introduced e.g. `ty::Error`, if inference failed, make sure . // to mark the `TypeckResults` as tainted in that case, so that downstream . // users of the typeck results don't produce extra errors, or worse, ICEs. 66,245 ( 0.00%) if resolver.replaced_with_error { . // FIXME(eddyb) keep track of `ErrorReported` from where the error was emitted. . self.typeck_results.tainted_by_errors = Some(ErrorReported); . } . . x 8 ( 0.00%) } . } . . crate trait Locatable { . fn to_span(&self, tcx: TyCtxt<'_>) -> Span; . } . . impl Locatable for Span { . fn to_span(&self, _: TyCtxt<'_>) -> Span { -- line 677 ---------------------------------------- -- line 698 ---------------------------------------- . } . . impl<'cx, 'tcx> Resolver<'cx, 'tcx> { . fn new( . fcx: &'cx FnCtxt<'cx, 'tcx>, . span: &'cx dyn Locatable, . body: &'tcx hir::Body<'tcx>, . ) -> Resolver<'cx, 'tcx> { 300,196 ( 0.02%) Resolver { tcx: fcx.tcx, infcx: fcx, span, body, replaced_with_error: false } . } . . fn report_type_error(&self, t: Ty<'tcx>) { . if !self.tcx.sess.has_errors() { . self.infcx . .emit_inference_failure_err( . Some(self.body.id()), . self.span.to_span(self.tcx), -- line 714 ---------------------------------------- -- line 736 ---------------------------------------- . } . . struct EraseEarlyRegions<'tcx> { . tcx: TyCtxt<'tcx>, . } . . impl<'tcx> TypeFolder<'tcx> for EraseEarlyRegions<'tcx> { . fn tcx<'b>(&'b self) -> TyCtxt<'tcx> { 3,126 ( 0.00%) self.tcx . } . fn fold_ty(&mut self, ty: Ty<'tcx>) -> Ty<'tcx> { 32,454 ( 0.00%) if ty.has_type_flags(ty::TypeFlags::HAS_FREE_REGIONS) { 5,092 ( 0.00%) ty.super_fold_with(self) . } else { . ty . } . } . fn fold_region(&mut self, r: ty::Region<'tcx>) -> ty::Region<'tcx> { 8,476 ( 0.00%) if let ty::ReLateBound(..) = r { r } else { self.tcx.lifetimes.re_erased } . } . } . . impl<'cx, 'tcx> TypeFolder<'tcx> for Resolver<'cx, 'tcx> { . fn tcx<'a>(&'a self) -> TyCtxt<'tcx> { 638 ( 0.00%) self.tcx . } . 277,524 ( 0.02%) fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> { 92,508 ( 0.01%) match self.infcx.fully_resolve(t) { . Ok(t) => { . // Do not anonymize late-bound regions . // (e.g. keep `for<'a>` named `for<'a>`). . // This allows NLL to generate error messages that . // refer to the higher-ranked lifetime names written by the user. 61,672 ( 0.00%) EraseEarlyRegions { tcx: self.infcx.tcx }.fold_ty(t) . } . Err(_) => { . debug!("Resolver::fold_ty: input type `{:?}` not fully resolvable", t); . self.report_type_error(t); . self.replaced_with_error = true; . self.tcx().ty_error() . } . } 246,688 ( 0.01%) } . . fn fold_region(&mut self, r: ty::Region<'tcx>) -> ty::Region<'tcx> { . debug_assert!(!r.is_late_bound(), "Should not be resolving bound region."); 2,946 ( 0.00%) self.tcx.lifetimes.re_erased . } . . fn fold_const(&mut self, ct: &'tcx ty::Const<'tcx>) -> &'tcx ty::Const<'tcx> { . match self.infcx.fully_resolve(ct) { . Ok(ct) => self.infcx.tcx.erase_regions(ct), . Err(_) => { . debug!("Resolver::fold_const: input const `{:?}` not fully resolvable", ct); . self.report_const_error(ct); -- line 791 ---------------------------------------- 380,561 ( 0.02%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/slice/mod.rs -------------------------------------------------------------------------------- Ir -- line 141 ---------------------------------------- . /// ``` . /// let a = [1, 2, 3]; . /// assert!(!a.is_empty()); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_slice_is_empty", since = "1.39.0")] . #[inline] . pub const fn is_empty(&self) -> bool { 776,052 ( 0.05%) self.len() == 0 . } . . /// Returns the first element of the slice, or `None` if it is empty. . /// . /// # Examples . /// . /// ``` . /// let v = [10, 40, 30]; -- line 157 ---------------------------------------- -- line 159 ---------------------------------------- . /// . /// let w: &[i32] = &[]; . /// assert_eq!(None, w.first()); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_slice_first_last_not_mut", since = "1.56.0")] . #[inline] . pub const fn first(&self) -> Option<&T> { 1,690 ( 0.00%) if let [first, ..] = self { Some(first) } else { None } . } . . /// Returns a mutable pointer to the first element of the slice, or `None` if it is empty. . /// . /// # Examples . /// . /// ``` . /// let x = &mut [0, 1, 2]; -- line 175 ---------------------------------------- -- line 178 ---------------------------------------- . /// *first = 5; . /// } . /// assert_eq!(x, &[5, 1, 2]); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_slice_first_last", issue = "83570")] . #[inline] . pub const fn first_mut(&mut self) -> Option<&mut T> { 1,400 ( 0.00%) if let [first, ..] = self { Some(first) } else { None } . } . . /// Returns the first and all the rest of the elements of the slice, or `None` if it is empty. . /// . /// # Examples . /// . /// ``` . /// let x = &[0, 1, 2]; -- line 194 ---------------------------------------- -- line 237 ---------------------------------------- . /// assert_eq!(last, &2); . /// assert_eq!(elements, &[0, 1]); . /// } . /// ``` . #[stable(feature = "slice_splits", since = "1.5.0")] . #[rustc_const_stable(feature = "const_slice_first_last_not_mut", since = "1.56.0")] . #[inline] . pub const fn split_last(&self) -> Option<(&T, &[T])> { 7,320 ( 0.00%) if let [init @ .., last] = self { Some((last, init)) } else { None } . } . . /// Returns the last and all the rest of the elements of the slice, or `None` if it is empty. . /// . /// # Examples . /// . /// ``` . /// let x = &mut [0, 1, 2]; -- line 253 ---------------------------------------- -- line 276 ---------------------------------------- . /// . /// let w: &[i32] = &[]; . /// assert_eq!(None, w.last()); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_slice_first_last_not_mut", since = "1.56.0")] . #[inline] . pub const fn last(&self) -> Option<&T> { 626,972 ( 0.04%) if let [.., last] = self { Some(last) } else { None } . } . . /// Returns a mutable pointer to the last item in the slice. . /// . /// # Examples . /// . /// ``` . /// let x = &mut [0, 1, 2]; -- line 292 ---------------------------------------- -- line 295 ---------------------------------------- . /// *last = 10; . /// } . /// assert_eq!(x, &[0, 1, 10]); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_slice_first_last", issue = "83570")] . #[inline] . pub const fn last_mut(&mut self) -> Option<&mut T> { 189,666 ( 0.01%) if let [.., last] = self { Some(last) } else { None } . } . . /// Returns a reference to an element or subslice depending on the type of . /// index. . /// . /// - If given a position, returns a reference to the element at that . /// position or `None` if out of bounds. . /// - If given a range, returns the subslice corresponding to that range, -- line 311 ---------------------------------------- -- line 448 ---------------------------------------- . /// } . /// ``` . /// . /// [`as_mut_ptr`]: slice::as_mut_ptr . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_slice_as_ptr", since = "1.32.0")] . #[inline] . pub const fn as_ptr(&self) -> *const T { 481,676 ( 0.03%) self as *const [T] as *const T . } . . /// Returns an unsafe mutable pointer to the slice's buffer. . /// . /// The caller must ensure that the slice outlives the pointer this . /// function returns, or else it will end up pointing to garbage. . /// . /// Modifying the container referenced by this slice may cause its buffer -- line 464 ---------------------------------------- -- line 476 ---------------------------------------- . /// } . /// } . /// assert_eq!(x, &[3, 4, 6]); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_ptr_offset", issue = "71499")] . #[inline] . pub const fn as_mut_ptr(&mut self) -> *mut T { 6 ( 0.00%) self as *mut [T] as *mut T . } . . /// Returns the two raw pointers spanning the slice. . /// . /// The returned range is half-open, which means that the end pointer . /// points *one past* the last element of the slice. This way, an empty . /// slice is represented by two equal pointers, and the difference between . /// the two pointers represents the size of the slice. -- line 492 ---------------------------------------- -- line 582 ---------------------------------------- . /// v.swap(2, 4); . /// assert!(v == ["a", "b", "e", "d", "c"]); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_swap", issue = "83163")] . #[inline] . #[track_caller] . pub const fn swap(&mut self, a: usize, b: usize) { 23,512 ( 0.00%) let _ = &self[a]; 27,721 ( 0.00%) let _ = &self[b]; . . // SAFETY: we just checked that both `a` and `b` are in bounds . unsafe { self.swap_unchecked(a, b) } . } . . /// Swaps two elements in the slice, without doing bounds checking. . /// . /// For a safe alternative see [`swap`]. -- line 599 ---------------------------------------- -- line 677 ---------------------------------------- . . // Because this function is first compiled in isolation, . // this check tells LLVM that the indexing below is . // in-bounds. Then after inlining -- once the actual . // lengths of the slices are known -- it's removed. . let (a, b) = (&mut a[..n], &mut b[..n]); . . for i in 0..n { 274 ( 0.00%) mem::swap(&mut a[i], &mut b[n - 1 - i]); . } . } . } . . /// Returns an iterator over the slice. . /// . /// # Examples . /// -- line 693 ---------------------------------------- -- line 1499 ---------------------------------------- . /// assert_eq!(left, [1, 2, 3, 4, 5, 6]); . /// assert_eq!(right, []); . /// } . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[inline] . #[track_caller] . pub fn split_at(&self, mid: usize) -> (&[T], &[T]) { 18 ( 0.00%) assert!(mid <= self.len()); . // SAFETY: `[ptr; mid]` and `[mid; len]` are inside `self`, which . // fulfills the requirements of `from_raw_parts_mut`. . unsafe { self.split_at_unchecked(mid) } . } . . /// Divides one mutable slice into two at an index. . /// . /// The first will contain all indices from `[0, mid)` (excluding -- line 1515 ---------------------------------------- -- line 1530 ---------------------------------------- . /// left[1] = 2; . /// right[1] = 4; . /// assert_eq!(v, [1, 2, 3, 4, 5, 6]); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[inline] . #[track_caller] . pub fn split_at_mut(&mut self, mid: usize) -> (&mut [T], &mut [T]) { 20,692 ( 0.00%) assert!(mid <= self.len()); . // SAFETY: `[ptr; mid]` and `[mid; len]` are inside `self`, which . // fulfills the requirements of `from_raw_parts_mut`. . unsafe { self.split_at_mut_unchecked(mid) } . } . . /// Divides one slice into two at an index, without doing bounds checking. . /// . /// The first will contain all indices from `[0, mid)` (excluding -- line 1546 ---------------------------------------- -- line 1628 ---------------------------------------- . pub unsafe fn split_at_mut_unchecked(&mut self, mid: usize) -> (&mut [T], &mut [T]) { . let len = self.len(); . let ptr = self.as_mut_ptr(); . . // SAFETY: Caller has to check that `0 <= mid <= self.len()`. . // . // `[ptr; mid]` and `[mid; len]` are not overlapping, so returning a mutable reference . // is fine. 2,251 ( 0.00%) unsafe { (from_raw_parts_mut(ptr, mid), from_raw_parts_mut(ptr.add(mid), len - mid)) } . } . . /// Divides one slice into an array and a remainder slice at an index. . /// . /// The array will contain all indices from `[0, N)` (excluding . /// the index `N` itself) and the slice will contain all . /// indices from `[N, len)` (excluding the index `len` itself). . /// -- line 1644 ---------------------------------------- -- line 2113 ---------------------------------------- . /// assert!(!v.iter().any(|e| e == "hi")); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[inline] . pub fn contains(&self, x: &T) -> bool . where . T: PartialEq, . { 366 ( 0.00%) cmp::SliceContains::slice_contains(x, self) . } . . /// Returns `true` if `needle` is a prefix of the slice. . /// . /// # Examples . /// . /// ``` . /// let v = [10, 40, 30]; -- line 2129 ---------------------------------------- -- line 2142 ---------------------------------------- . /// assert!(v.starts_with(&[])); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn starts_with(&self, needle: &[T]) -> bool . where . T: PartialEq, . { . let n = needle.len(); 773 ( 0.00%) self.len() >= n && needle == &self[..n] . } . . /// Returns `true` if `needle` is a suffix of the slice. . /// . /// # Examples . /// . /// ``` . /// let v = [10, 40, 30]; -- line 2158 ---------------------------------------- -- line 2171 ---------------------------------------- . /// assert!(v.ends_with(&[])); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn ends_with(&self, needle: &[T]) -> bool . where . T: PartialEq, . { . let (m, n) = (self.len(), needle.len()); 358 ( 0.00%) m >= n && needle == &self[m - n..] . } . . /// Returns a subslice with the prefix removed. . /// . /// If the slice starts with `prefix`, returns the subslice after the prefix, wrapped in `Some`. . /// If `prefix` is empty, simply returns the original slice. . /// . /// If the slice does not start with `prefix`, returns `None`. -- line 2187 ---------------------------------------- -- line 2293 ---------------------------------------- . /// s.insert(idx, num); . /// assert_eq!(s, [0, 1, 1, 1, 1, 2, 3, 5, 8, 13, 21, 34, 42, 55]); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn binary_search(&self, x: &T) -> Result . where . T: Ord, . { 3 ( 0.00%) self.binary_search_by(|p| p.cmp(x)) . } . . /// Binary searches this sorted slice with a comparator function. . /// . /// The comparator function should implement an order consistent . /// with the sort order of the underlying slice, returning an . /// order code that indicates whether its argument is `Less`, . /// `Equal` or `Greater` the desired target. -- line 2309 ---------------------------------------- -- line 2345 ---------------------------------------- . #[inline] . pub fn binary_search_by<'a, F>(&'a self, mut f: F) -> Result . where . F: FnMut(&'a T) -> Ordering, . { . let mut size = self.len(); . let mut left = 0; . let mut right = size; 1,920,479 ( 0.11%) while left < right { 1,571,294 ( 0.09%) let mid = left + size / 2; . . // SAFETY: the call is made safe by the following invariants: . // - `mid >= 0` . // - `mid < size`: `mid` is limited by `[left; right)` bound. 272,766 ( 0.02%) let cmp = f(unsafe { self.get_unchecked(mid) }); . . // The reason why we use if/else control flow rather than match . // is because match reorders comparison operations, which is perf sensitive. . // This is x86 asm for u8: https://rust.godbolt.org/z/8Y8Pra. 425,295 ( 0.02%) if cmp == Less { 487,712 ( 0.03%) left = mid + 1; 267,579 ( 0.02%) } else if cmp == Greater { . right = mid; . } else { . // SAFETY: same as the `get_unchecked` above . unsafe { crate::intrinsics::assume(mid < self.len()) }; . return Ok(mid); . } . 1,255,253 ( 0.07%) size = right - left; . } . Err(left) . } . . /// Binary searches this sorted slice with a key extraction function. . /// . /// Assumes that the slice is sorted by the key, for instance with . /// [`sort_by_key`] using the same key extraction function. -- line 2382 ---------------------------------------- -- line 3203 ---------------------------------------- . #[track_caller] . fn len_mismatch_fail(dst_len: usize, src_len: usize) -> ! { . panic!( . "source slice length ({}) does not match destination slice length ({})", . src_len, dst_len, . ); . } . 35,718 ( 0.00%) if self.len() != src.len() { . len_mismatch_fail(self.len(), src.len()); . } . . // SAFETY: `self` is valid for `self.len()` elements by definition, and `src` was . // checked to have the same length. The slices cannot overlap because . // mutable references are exclusive. . unsafe { . ptr::copy_nonoverlapping(src.as_ptr(), self.as_mut_ptr(), self.len()); -- line 3219 ---------------------------------------- -- line 3382 ---------------------------------------- . } . let gcd: usize = gcd(mem::size_of::(), mem::size_of::()); . let ts: usize = mem::size_of::() / gcd; . let us: usize = mem::size_of::() / gcd; . . // Armed with this knowledge, we can find how many `U`s we can fit! . let us_len = self.len() / ts * us; . // And how many `T`s will be in the trailing slice! 2,056 ( 0.00%) let ts_len = self.len() % ts; . (us_len, ts_len) . } . . /// Transmute the slice to a slice of another type, ensuring alignment of the types is . /// maintained. . /// . /// This method splits the slice into three distinct slices: prefix, correctly aligned middle . /// slice of a new type, and the suffix slice. The method may make the middle slice the greatest -- line 3398 ---------------------------------------- -- line 3429 ---------------------------------------- . return (self, &[], &[]); . } . . // First, find at what point do we split between the first and 2nd slice. Easy with . // ptr.align_offset. . let ptr = self.as_ptr(); . // SAFETY: See the `align_to_mut` method for the detailed safety comment. . let offset = unsafe { crate::ptr::align_offset(ptr, mem::align_of::()) }; 2,056 ( 0.00%) if offset > self.len() { . (self, &[], &[]) . } else { . let (left, rest) = self.split_at(offset); . let (us_len, ts_len) = rest.align_to_offsets::(); . // SAFETY: now `rest` is definitely aligned, so `from_raw_parts` below is okay, . // since the caller guarantees that we can transmute `T` to `U` safely. . unsafe { . ( . left, . from_raw_parts(rest.as_ptr() as *const U, us_len), 2,056 ( 0.00%) from_raw_parts(rest.as_ptr().add(rest.len() - ts_len), ts_len), . ) . } . } . } . . /// Transmute the slice to a slice of another type, ensuring alignment of the types is . /// maintained. . /// -- line 3456 ---------------------------------------- 1,437,195 ( 0.08%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/sub.rs -------------------------------------------------------------------------------- Ir -- line 19 ---------------------------------------- . pub fn new( . f: &'combine mut CombineFields<'infcx, 'tcx>, . a_is_expected: bool, . ) -> Sub<'combine, 'infcx, 'tcx> { . Sub { fields: f, a_is_expected } . } . . fn with_expected_switched R>(&mut self, f: F) -> R { 75,240 ( 0.00%) self.a_is_expected = !self.a_is_expected; . let result = f(self); 1,929 ( 0.00%) self.a_is_expected = !self.a_is_expected; . result . } . } . . impl<'tcx> TypeRelation<'tcx> for Sub<'_, '_, 'tcx> { . fn tag(&self) -> &'static str { . "Sub" . } . fn tcx(&self) -> TyCtxt<'tcx> { 5,033 ( 0.00%) self.fields.infcx.tcx 207 ( 0.00%) } . . fn param_env(&self) -> ty::ParamEnv<'tcx> { . self.fields.param_env . } . . fn a_is_expected(&self) -> bool { 2,470 ( 0.00%) self.a_is_expected . } . 112 ( 0.00%) fn with_cause(&mut self, cause: Cause, f: F) -> R . where . F: FnOnce(&mut Self) -> R, . { . debug!("sub with_cause={:?}", cause); 16 ( 0.00%) let old_cause = mem::replace(&mut self.fields.cause, Some(cause)); . let r = f(self); . debug!("sub old_cause={:?}", old_cause); 16 ( 0.00%) self.fields.cause = old_cause; . r 112 ( 0.00%) } . . fn relate_with_variance>( . &mut self, . variance: ty::Variance, . _info: ty::VarianceDiagInfo<'tcx>, . a: T, . b: T, . ) -> RelateResult<'tcx, T> { 4,254 ( 0.00%) match variance { 5,387 ( 0.00%) ty::Invariant => self.fields.equate(self.a_is_expected).relate(a, b), . ty::Covariant => self.relate(a, b), . ty::Bivariant => Ok(a), . ty::Contravariant => self.with_expected_switched(|this| this.relate(b, a)), . } . } . 536,472 ( 0.03%) fn tys(&mut self, a: Ty<'tcx>, b: Ty<'tcx>) -> RelateResult<'tcx, Ty<'tcx>> { . debug!("{}.tys({:?}, {:?})", self.tag(), a, b); . 59,608 ( 0.00%) if a == b { . return Ok(a); . } . 42,904 ( 0.00%) let infcx = self.fields.infcx; 42,904 ( 0.00%) let a = infcx.inner.borrow_mut().type_variables().replace_if_possible(a); 42,904 ( 0.00%) let b = infcx.inner.borrow_mut().type_variables().replace_if_possible(b); 194,747 ( 0.01%) match (a.kind(), b.kind()) { . (&ty::Infer(TyVar(_)), &ty::Infer(TyVar(_))) => { . // Shouldn't have any LBR here, so we can safely put . // this under a binder below without fear of accidental . // capture. 73 ( 0.00%) assert!(!a.has_escaping_bound_vars()); 73 ( 0.00%) assert!(!b.has_escaping_bound_vars()); . . // can't make progress on `A <: B` if both A and B are . // type variables, so record an obligation. . self.fields.obligations.push(Obligation::new( . self.fields.trace.cause.clone(), 73 ( 0.00%) self.fields.param_env, 438 ( 0.00%) ty::Binder::dummy(ty::PredicateKind::Subtype(ty::SubtypePredicate { 73 ( 0.00%) a_is_expected: self.a_is_expected, . a, . b, . })) . .to_predicate(self.tcx()), . )); . . Ok(a) . } 18,052 ( 0.00%) (&ty::Infer(TyVar(a_id)), _) => { 108,312 ( 0.01%) self.fields.instantiate(b, RelationDir::SupertypeOf, a_id, !self.a_is_expected)?; . Ok(a) . } 1,018 ( 0.00%) (_, &ty::Infer(TyVar(b_id))) => { 4,072 ( 0.00%) self.fields.instantiate(a, RelationDir::SubtypeOf, b_id, self.a_is_expected)?; . Ok(a) . } . . (&ty::Error(_), _) | (_, &ty::Error(_)) => { . infcx.set_tainted_by_errors(); . Ok(self.tcx().ty_error()) . } . . _ => { 13,854 ( 0.00%) self.fields.infcx.super_combine_tys(self, a, b)?; . Ok(a) . } . } 536,472 ( 0.03%) } . 13,626 ( 0.00%) fn regions( . &mut self, . a: ty::Region<'tcx>, . b: ty::Region<'tcx>, . ) -> RelateResult<'tcx, ty::Region<'tcx>> { . debug!("{}.regions({:?}, {:?}) self.cause={:?}", self.tag(), a, b, self.fields.cause); . . // FIXME -- we have more fine-grained information available . // from the "cause" field, we could perhaps give more tailored . // error messages. 4,542 ( 0.00%) let origin = SubregionOrigin::Subtype(Box::new(self.fields.trace.clone())); 9,084 ( 0.00%) self.fields . .infcx . .inner . .borrow_mut() . .unwrap_region_constraints() 9,084 ( 0.00%) .make_subregion(origin, a, b); . 3,028 ( 0.00%) Ok(a) 13,626 ( 0.00%) } . . fn consts( . &mut self, . a: &'tcx ty::Const<'tcx>, . b: &'tcx ty::Const<'tcx>, . ) -> RelateResult<'tcx, &'tcx ty::Const<'tcx>> { . self.fields.infcx.super_combine_consts(self, a, b) . } -- line 158 ---------------------------------------- -- line 160 ---------------------------------------- . fn binders( . &mut self, . a: ty::Binder<'tcx, T>, . b: ty::Binder<'tcx, T>, . ) -> RelateResult<'tcx, ty::Binder<'tcx, T>> . where . T: Relate<'tcx>, . { 2,174 ( 0.00%) self.fields.higher_ranked_sub(a, b, self.a_is_expected) . } . } . . impl<'tcx> ConstEquateRelation<'tcx> for Sub<'_, '_, 'tcx> { . fn const_equate_obligation(&mut self, a: &'tcx ty::Const<'tcx>, b: &'tcx ty::Const<'tcx>) { . self.fields.add_const_equate_obligation(self.a_is_expected, a, b); . } . } -- line 176 ---------------------------------------- 219,431 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/hir/map/mod.rs -------------------------------------------------------------------------------- Ir -- line 17 ---------------------------------------- . use rustc_span::hygiene::MacroKind; . use rustc_span::source_map::Spanned; . use rustc_span::symbol::{kw, sym, Ident, Symbol}; . use rustc_span::Span; . use rustc_target::spec::abi::Abi; . use std::collections::VecDeque; . . fn fn_decl<'hir>(node: Node<'hir>) -> Option<&'hir FnDecl<'hir>> { 1,965 ( 0.00%) match node { . Node::Item(Item { kind: ItemKind::Fn(sig, _, _), .. }) . | Node::TraitItem(TraitItem { kind: TraitItemKind::Fn(sig, _), .. }) . | Node::ImplItem(ImplItem { kind: ImplItemKind::Fn(sig, _), .. }) => Some(&sig.decl), . Node::Expr(Expr { kind: ExprKind::Closure(_, fn_decl, ..), .. }) . | Node::ForeignItem(ForeignItem { kind: ForeignItemKind::Fn(fn_decl, ..), .. }) => { . Some(fn_decl) . } . _ => None, . } . } . . pub fn fn_sig<'hir>(node: Node<'hir>) -> Option<&'hir FnSig<'hir>> { 76 ( 0.00%) match &node { . Node::Item(Item { kind: ItemKind::Fn(sig, _, _), .. }) . | Node::TraitItem(TraitItem { kind: TraitItemKind::Fn(sig, _), .. }) . | Node::ImplItem(ImplItem { kind: ImplItemKind::Fn(sig, _), .. }) => Some(sig), . _ => None, . } . } . . pub fn associated_body<'hir>(node: Node<'hir>) -> Option { 28,226 ( 0.00%) match node { . Node::Item(Item { . kind: ItemKind::Const(_, body) | ItemKind::Static(.., body) | ItemKind::Fn(.., body), . .. . }) . | Node::TraitItem(TraitItem { . kind: . TraitItemKind::Const(_, Some(body)) | TraitItemKind::Fn(_, TraitFn::Provided(body)), . .. . }) . | Node::ImplItem(ImplItem { . kind: ImplItemKind::Const(_, body) | ImplItemKind::Fn(_, body), . .. . }) 4,702 ( 0.00%) | Node::Expr(Expr { kind: ExprKind::Closure(.., body, _, _), .. }) => Some(*body), . 144 ( 0.00%) Node::AnonConst(constant) => Some(constant.body), . . _ => None, . } . } . . fn is_body_owner<'hir>(node: Node<'hir>, hir_id: HirId) -> bool { . match associated_body(node) { . Some(b) => b.hir_id == hir_id, -- line 71 ---------------------------------------- -- line 83 ---------------------------------------- . pub struct ParentHirIterator<'hir> { . current_id: HirId, . map: Map<'hir>, . } . . impl<'hir> Iterator for ParentHirIterator<'hir> { . type Item = (HirId, Node<'hir>); . 2,688 ( 0.00%) fn next(&mut self) -> Option { 458 ( 0.00%) if self.current_id == CRATE_HIR_ID { . return None; . } . loop { . // There are nodes that do not have entries, so we need to skip them. . let parent_id = self.map.get_parent_node(self.current_id); . 1,395 ( 0.00%) if parent_id == self.current_id { . self.current_id = CRATE_HIR_ID; . return None; . } . 1,004 ( 0.00%) self.current_id = parent_id; 3,741 ( 0.00%) if let Some(node) = self.map.find(parent_id) { 1,536 ( 0.00%) return Some((parent_id, node)); . } . // If this `HirId` doesn't have an entry, skip it and look for its `parent_id`. . } 3,456 ( 0.00%) } . } . . /// An iterator that walks up the ancestor tree of a given `HirId`. . /// Constructed using `tcx.hir().parent_owner_iter(hir_id)`. . pub struct ParentOwnerIterator<'hir> { . current_id: HirId, . map: Map<'hir>, . } . . impl<'hir> Iterator for ParentOwnerIterator<'hir> { . type Item = (LocalDefId, OwnerNode<'hir>); . 24,876 ( 0.00%) fn next(&mut self) -> Option { 8,292 ( 0.00%) if self.current_id.local_id.index() != 0 { 1,528 ( 0.00%) self.current_id.local_id = ItemLocalId::new(0); 6,112 ( 0.00%) if let Some(node) = self.map.tcx.hir_owner(self.current_id.owner) { . return Some((self.current_id.owner, node.node)); . } . } 1,236 ( 0.00%) if self.current_id == CRATE_HIR_ID { 18 ( 0.00%) return None; . } . loop { . // There are nodes that do not have entries, so we need to skip them. . let parent_id = self.map.def_key(self.current_id.owner).parent; . . let parent_id = parent_id.map_or(CRATE_HIR_ID.owner, |local_def_index| { . let def_id = LocalDefId { local_def_index }; . self.map.local_def_id_to_hir_id(def_id).owner . }); 2,454 ( 0.00%) self.current_id = HirId::make_owner(parent_id); . . // If this `HirId` doesn't have an entry, skip it and look for its `parent_id`. 2,454 ( 0.00%) if let Some(node) = self.map.tcx.hir_owner(self.current_id.owner) { . return Some((self.current_id.owner, node.node)); . } . } 22,112 ( 0.00%) } . } . . impl<'hir> Map<'hir> { 210 ( 0.00%) pub fn krate(&self) -> &'hir Crate<'hir> { 30 ( 0.00%) self.tcx.hir_crate(()) 240 ( 0.00%) } . 7 ( 0.00%) pub fn root_module(&self) -> &'hir Mod<'hir> { 1 ( 0.00%) match self.tcx.hir_owner(CRATE_DEF_ID).map(|o| o.node) { . Some(OwnerNode::Crate(item)) => item, . _ => bug!(), . } 8 ( 0.00%) } . . pub fn items(&self) -> impl Iterator> + 'hir { . let krate = self.krate(); . krate.owners.iter().filter_map(|owner| match owner.as_ref()?.node() { . OwnerNode::Item(item) => Some(item), . _ => None, . }) . } -- line 169 ---------------------------------------- -- line 184 ---------------------------------------- . . #[inline] . pub fn def_path_hash(self, def_id: LocalDefId) -> DefPathHash { . // Accessing the DefPathHash is ok, it is incr. comp. stable. . self.tcx.untracked_resolutions.definitions.def_path_hash(def_id) . } . . #[inline] 48,240 ( 0.00%) pub fn local_def_id(&self, hir_id: HirId) -> LocalDefId { 8,223 ( 0.00%) self.opt_local_def_id(hir_id).unwrap_or_else(|| { . bug!( . "local_def_id: no entry for `{:?}`, which has a map of `{:?}`", . hir_id, . self.find(hir_id) . ) . }) 36,180 ( 0.00%) } . . #[inline] 21,928 ( 0.00%) pub fn opt_local_def_id(&self, hir_id: HirId) -> Option { 7,368 ( 0.00%) if hir_id.local_id == ItemLocalId::new(0) { . Some(hir_id.owner) . } else { 5,446 ( 0.00%) self.tcx . .hir_owner_nodes(hir_id.owner)? . .local_id_to_def_id . .get(&hir_id.local_id) . .copied() . } 24,669 ( 0.00%) } . . #[inline] 62 ( 0.00%) pub fn local_def_id_to_hir_id(&self, def_id: LocalDefId) -> HirId { . // FIXME(#85914) is this access safe for incr. comp.? 1,906 ( 0.00%) self.tcx.untracked_resolutions.definitions.local_def_id_to_hir_id(def_id) 124 ( 0.00%) } . 7 ( 0.00%) pub fn iter_local_def_id(&self) -> impl Iterator + '_ { . // Create a dependency to the crate to be sure we reexcute this when the amount of . // definitions change. 1 ( 0.00%) self.tcx.ensure().hir_crate(()); . self.tcx.untracked_resolutions.definitions.iter_local_def_id() 9 ( 0.00%) } . 5,852 ( 0.00%) pub fn opt_def_kind(&self, local_def_id: LocalDefId) -> Option { . let hir_id = self.local_def_id_to_hir_id(local_def_id); 10,868 ( 0.00%) let def_kind = match self.find(hir_id)? { 1,184 ( 0.00%) Node::Item(item) => match item.kind { . ItemKind::Static(..) => DefKind::Static, . ItemKind::Const(..) => DefKind::Const, . ItemKind::Fn(..) => DefKind::Fn, . ItemKind::Macro(..) => DefKind::Macro(MacroKind::Bang), . ItemKind::Mod(..) => DefKind::Mod, . ItemKind::OpaqueTy(..) => DefKind::OpaqueTy, . ItemKind::TyAlias(..) => DefKind::TyAlias, . ItemKind::Enum(..) => DefKind::Enum, -- line 239 ---------------------------------------- -- line 247 ---------------------------------------- . ItemKind::GlobalAsm(..) => DefKind::GlobalAsm, . ItemKind::Impl { .. } => DefKind::Impl, . }, . Node::ForeignItem(item) => match item.kind { . ForeignItemKind::Fn(..) => DefKind::Fn, . ForeignItemKind::Static(..) => DefKind::Static, . ForeignItemKind::Type => DefKind::ForeignTy, . }, 18 ( 0.00%) Node::TraitItem(item) => match item.kind { . TraitItemKind::Const(..) => DefKind::AssocConst, . TraitItemKind::Fn(..) => DefKind::AssocFn, . TraitItemKind::Type(..) => DefKind::AssocTy, . }, 122 ( 0.00%) Node::ImplItem(item) => match item.kind { . ImplItemKind::Const(..) => DefKind::AssocConst, . ImplItemKind::Fn(..) => DefKind::AssocFn, . ImplItemKind::TyAlias(..) => DefKind::AssocTy, . }, . Node::Variant(_) => DefKind::Variant, . Node::Ctor(variant_data) => { . // FIXME(eddyb) is this even possible, if we have a `Node::Ctor`? 485 ( 0.00%) assert_ne!(variant_data.ctor_hir_id(), None); . 677 ( 0.00%) let ctor_of = match self.find(self.get_parent_node(hir_id)) { . Some(Node::Item(..)) => def::CtorOf::Struct, . Some(Node::Variant(..)) => def::CtorOf::Variant, . _ => unreachable!(), . }; 194 ( 0.00%) DefKind::Ctor(ctor_of, def::CtorKind::from_hir(variant_data)) 388 ( 0.00%) } . Node::AnonConst(_) => { 12 ( 0.00%) let inline = match self.find(self.get_parent_node(hir_id)) { . Some(Node::Expr(&Expr { . kind: ExprKind::ConstBlock(ref anon_const), .. . })) if anon_const.hir_id == hir_id => true, . _ => false, . }; . if inline { DefKind::InlineConst } else { DefKind::AnonConst } . } . Node::Field(_) => DefKind::Field, 110 ( 0.00%) Node::Expr(expr) => match expr.kind { . ExprKind::Closure(.., None) => DefKind::Closure, . ExprKind::Closure(.., Some(_)) => DefKind::Generator, . _ => bug!("def_kind: unsupported node: {}", self.node_to_string(hir_id)), . }, 174 ( 0.00%) Node::GenericParam(param) => match param.kind { . GenericParamKind::Lifetime { .. } => DefKind::LifetimeParam, . GenericParamKind::Type { .. } => DefKind::TyParam, . GenericParamKind::Const { .. } => DefKind::ConstParam, . }, . Node::Crate(_) => DefKind::Mod, . Node::Stmt(_) . | Node::PathSegment(_) . | Node::Ty(_) -- line 300 ---------------------------------------- -- line 304 ---------------------------------------- . | Node::Binding(_) . | Node::Local(_) . | Node::Param(_) . | Node::Arm(_) . | Node::Lifetime(_) . | Node::Visibility(_) . | Node::Block(_) => return None, . }; 2,948 ( 0.00%) Some(def_kind) 8,360 ( 0.00%) } . . pub fn def_kind(&self, local_def_id: LocalDefId) -> DefKind { . self.opt_def_kind(local_def_id) . .unwrap_or_else(|| bug!("def_kind: unsupported node: {:?}", local_def_id)) . } . 1,082,576 ( 0.06%) pub fn find_parent_node(&self, id: HirId) -> Option { 135,322 ( 0.01%) if id.local_id == ItemLocalId::from_u32(0) { . Some(self.tcx.hir_owner_parent(id.owner)) . } else { 267,832 ( 0.02%) let owner = self.tcx.hir_owner_nodes(id.owner)?; 133,916 ( 0.01%) let node = owner.nodes[id.local_id].as_ref()?; 401,748 ( 0.02%) let hir_id = HirId { owner: id.owner, local_id: node.parent }; . Some(hir_id) . } 1,082,576 ( 0.06%) } . 1,032 ( 0.00%) pub fn get_parent_node(&self, hir_id: HirId) -> HirId { 785,649 ( 0.05%) self.find_parent_node(hir_id).unwrap() 2,064 ( 0.00%) } . . /// Retrieves the `Node` corresponding to `id`, returning `None` if cannot be found. 352,264 ( 0.02%) pub fn find(&self, id: HirId) -> Option> { 44,033 ( 0.00%) if id.local_id == ItemLocalId::from_u32(0) { . let owner = self.tcx.hir_owner(id.owner)?; 20,086 ( 0.00%) Some(owner.node.into()) . } else { 47,648 ( 0.00%) let owner = self.tcx.hir_owner_nodes(id.owner)?; 23,824 ( 0.00%) let node = owner.nodes[id.local_id].as_ref()?; 71,472 ( 0.00%) Some(node.node) . } 352,264 ( 0.02%) } . . /// Retrieves the `Node` corresponding to `id`, returning `None` if cannot be found. . #[inline] . pub fn find_by_def_id(&self, id: LocalDefId) -> Option> { 13,877 ( 0.00%) self.find(self.local_def_id_to_hir_id(id)) . } . . /// Retrieves the `Node` corresponding to `id`, panicking if it cannot be found. 18,501 ( 0.00%) pub fn get(&self, id: HirId) -> Node<'hir> { 8,953 ( 0.00%) self.find(id).unwrap_or_else(|| bug!("couldn't find hir id {} in the HIR map", id)) 12,334 ( 0.00%) } . . /// Retrieves the `Node` corresponding to `id`, panicking if it cannot be found. . #[inline] . pub fn get_by_def_id(&self, id: LocalDefId) -> Node<'hir> { . self.find_by_def_id(id).unwrap_or_else(|| bug!("couldn't find {:?} in the HIR map", id)) . } . 542 ( 0.00%) pub fn get_if_local(&self, id: DefId) -> Option> { 271 ( 0.00%) id.as_local().and_then(|id| self.find(self.local_def_id_to_hir_id(id))) 542 ( 0.00%) } . . pub fn get_generics(&self, id: LocalDefId) -> Option<&'hir Generics<'hir>> { . let node = self.tcx.hir_owner(id)?; . match node.node { . OwnerNode::ImplItem(impl_item) => Some(&impl_item.generics), . OwnerNode::TraitItem(trait_item) => Some(&trait_item.generics), . OwnerNode::Item(Item { . kind: -- line 374 ---------------------------------------- -- line 381 ---------------------------------------- . | ItemKind::TraitAlias(generics, _) . | ItemKind::Impl(Impl { generics, .. }), . .. . }) => Some(generics), . _ => None, . } . } . 55,734 ( 0.00%) pub fn item(&self, id: ItemId) -> &'hir Item<'hir> { 15,924 ( 0.00%) self.tcx.hir_owner(id.def_id).unwrap().node.expect_item() 63,696 ( 0.00%) } . 1,701 ( 0.00%) pub fn trait_item(&self, id: TraitItemId) -> &'hir TraitItem<'hir> { 486 ( 0.00%) self.tcx.hir_owner(id.def_id).unwrap().node.expect_trait_item() 1,944 ( 0.00%) } . 24,458 ( 0.00%) pub fn impl_item(&self, id: ImplItemId) -> &'hir ImplItem<'hir> { 6,988 ( 0.00%) self.tcx.hir_owner(id.def_id).unwrap().node.expect_impl_item() 27,952 ( 0.00%) } . . pub fn foreign_item(&self, id: ForeignItemId) -> &'hir ForeignItem<'hir> { . self.tcx.hir_owner(id.def_id).unwrap().node.expect_foreign_item() . } . 40,950 ( 0.00%) pub fn body(&self, id: BodyId) -> &'hir Body<'hir> { 11,700 ( 0.00%) self.tcx.hir_owner_nodes(id.hir_id.owner).unwrap().bodies[&id.hir_id.local_id] 46,800 ( 0.00%) } . 1,179 ( 0.00%) pub fn fn_decl_by_hir_id(&self, hir_id: HirId) -> Option<&'hir FnDecl<'hir>> { 1,179 ( 0.00%) if let Some(node) = self.find(hir_id) { . fn_decl(node) . } else { . bug!("no node for hir_id `{}`", hir_id) . } 786 ( 0.00%) } . 30 ( 0.00%) pub fn fn_sig_by_hir_id(&self, hir_id: HirId) -> Option<&'hir FnSig<'hir>> { 30 ( 0.00%) if let Some(node) = self.find(hir_id) { . fn_sig(node) . } else { . bug!("no node for hir_id `{}`", hir_id) . } 30 ( 0.00%) } . . pub fn enclosing_body_owner(&self, hir_id: HirId) -> HirId { . for (parent, _) in self.parent_iter(hir_id) { . if let Some(body) = self.maybe_body_owned_by(parent) { . return self.body_owner(body); . } . } . . bug!("no `enclosing_body_owner` for hir_id `{}`", hir_id); . } . . /// Returns the `HirId` that corresponds to the definition of . /// which this is the body of, i.e., a `fn`, `const` or `static` . /// item (possibly associated), a closure, or a `hir::AnonConst`. 27,784 ( 0.00%) pub fn body_owner(&self, BodyId { hir_id }: BodyId) -> HirId { . let parent = self.get_parent_node(hir_id); 20,838 ( 0.00%) assert!(self.find(parent).map_or(false, |n| is_body_owner(n, hir_id))); . parent 27,784 ( 0.00%) } . 8,790 ( 0.00%) pub fn body_owner_def_id(&self, id: BodyId) -> LocalDefId { 13,705 ( 0.00%) self.local_def_id(self.body_owner(id)) 8,790 ( 0.00%) } . . /// Given a `HirId`, returns the `BodyId` associated with it, . /// if the node is a body owner, otherwise returns `None`. 1,516 ( 0.00%) pub fn maybe_body_owned_by(&self, hir_id: HirId) -> Option { 4,902 ( 0.00%) self.find(hir_id).map(associated_body).flatten() 4,548 ( 0.00%) } . . /// Given a body owner's id, returns the `BodyId` associated with it. 3,186 ( 0.00%) pub fn body_owned_by(&self, id: HirId) -> BodyId { . self.maybe_body_owned_by(id).unwrap_or_else(|| { . span_bug!( . self.span(id), . "body_owned_by: {} has no associated body", . self.node_to_string(id) . ); . }) 2,478 ( 0.00%) } . 144 ( 0.00%) pub fn body_param_names(&self, id: BodyId) -> impl Iterator + 'hir { 1,252 ( 0.00%) self.body(id).params.iter().map(|arg| match arg.pat.kind { 410 ( 0.00%) PatKind::Binding(_, _, ident, _) => ident, . _ => Ident::empty(), . }) 432 ( 0.00%) } . . /// Returns the `BodyOwnerKind` of this `LocalDefId`. . /// . /// Panics if `LocalDefId` does not have an associated body. 5,274 ( 0.00%) pub fn body_owner_kind(&self, id: HirId) -> BodyOwnerKind { 13,990 ( 0.00%) match self.get(id) { . Node::Item(&Item { kind: ItemKind::Const(..), .. }) . | Node::TraitItem(&TraitItem { kind: TraitItemKind::Const(..), .. }) . | Node::ImplItem(&ImplItem { kind: ImplItemKind::Const(..), .. }) . | Node::AnonConst(_) => BodyOwnerKind::Const, . Node::Ctor(..) . | Node::Item(&Item { kind: ItemKind::Fn(..), .. }) . | Node::TraitItem(&TraitItem { kind: TraitItemKind::Fn(..), .. }) . | Node::ImplItem(&ImplItem { kind: ImplItemKind::Fn(..), .. }) => BodyOwnerKind::Fn, . Node::Item(&Item { kind: ItemKind::Static(_, m, _), .. }) => BodyOwnerKind::Static(m), . Node::Expr(&Expr { kind: ExprKind::Closure(..), .. }) => BodyOwnerKind::Closure, . node => bug!("{:#?} is not a body node", node), . } 5,274 ( 0.00%) } . . /// Returns the `ConstContext` of the body associated with this `LocalDefId`. . /// . /// Panics if `LocalDefId` does not have an associated body. . /// . /// This should only be used for determining the context of a body, a return . /// value of `Some` does not always suggest that the owner of the body is `const`, . /// just that it has to be checked as if it were. 5,792 ( 0.00%) pub fn body_const_context(&self, did: LocalDefId) -> Option { . let hir_id = self.local_def_id_to_hir_id(did); 8,688 ( 0.00%) let ccx = match self.body_owner_kind(hir_id) { . BodyOwnerKind::Const => ConstContext::Const, . BodyOwnerKind::Static(mt) => ConstContext::Static(mt), . 576 ( 0.00%) BodyOwnerKind::Fn if self.tcx.is_constructor(did.to_def_id()) => return None, 576 ( 0.00%) BodyOwnerKind::Fn if self.tcx.is_const_fn_raw(did.to_def_id()) => ConstContext::ConstFn, . BodyOwnerKind::Fn 1,152 ( 0.00%) if self.tcx.has_attr(did.to_def_id(), sym::default_method_body_is_const) => . { . ConstContext::ConstFn . } . BodyOwnerKind::Fn | BodyOwnerKind::Closure => return None, . }; . . Some(ccx) 6,516 ( 0.00%) } . . /// Returns an iterator of the `DefId`s for all body-owners in this . /// crate. If you would prefer to iterate over the bodies . /// themselves, you can do `self.hir().krate().body_ids.iter()`. 21 ( 0.00%) pub fn body_owners(self) -> impl Iterator + 'hir { 3 ( 0.00%) self.krate() . .owners . .iter_enumerated() . .flat_map(move |(owner, owner_info)| { 2,508 ( 0.00%) let bodies = &owner_info.as_ref()?.nodes.bodies; . Some(bodies.iter().map(move |&(local_id, _)| { 23 ( 0.00%) let hir_id = HirId { owner, local_id }; . let body_id = BodyId { hir_id }; 1,691 ( 0.00%) self.body_owner_def_id(body_id) . })) . }) . .flatten() 15 ( 0.00%) } . 10 ( 0.00%) pub fn par_body_owners(self, f: F) { . use rustc_data_structures::sync::{par_iter, ParallelIterator}; . #[cfg(parallel_compiler)] . use rustc_rayon::iter::IndexedParallelIterator; . 3 ( 0.00%) par_iter(&self.krate().owners.raw).enumerate().for_each(|(owner, owner_info)| { . let owner = LocalDefId::new(owner); 5,016 ( 0.00%) if let Some(owner_info) = owner_info { . par_iter(owner_info.nodes.bodies.range(..)).for_each(|(local_id, _)| { . let hir_id = HirId { owner, local_id: *local_id }; . let body_id = BodyId { hir_id }; 1,584 ( 0.00%) f(self.body_owner_def_id(body_id)) . }) . } . }); 8 ( 0.00%) } . . pub fn ty_param_owner(&self, id: HirId) -> LocalDefId { . match self.get(id) { . Node::Item(&Item { kind: ItemKind::Trait(..) | ItemKind::TraitAlias(..), .. }) => { . id.expect_owner() . } . Node::GenericParam(_) => self.get_parent_item(id), . _ => bug!("ty_param_owner: {} not a type parameter", self.node_to_string(id)), -- line 558 ---------------------------------------- -- line 564 ---------------------------------------- . Node::Item(&Item { kind: ItemKind::Trait(..) | ItemKind::TraitAlias(..), .. }) => { . kw::SelfUpper . } . Node::GenericParam(param) => param.name.ident().name, . _ => bug!("ty_param_name: {} not a type parameter", self.node_to_string(id)), . } . } . 414 ( 0.00%) pub fn trait_impls(&self, trait_did: DefId) -> &'hir [LocalDefId] { 46 ( 0.00%) self.tcx.all_local_trait_impls(()).get(&trait_did).map_or(&[], |xs| &xs[..]) 414 ( 0.00%) } . . /// Gets the attributes on the crate. This is preferable to . /// invoking `krate.attrs` because it registers a tighter . /// dep-graph access. . pub fn krate_attrs(&self) -> &'hir [ast::Attribute] { 20 ( 0.00%) self.attrs(CRATE_HIR_ID) . } . 329 ( 0.00%) pub fn get_module(&self, module: LocalDefId) -> (&'hir Mod<'hir>, Span, HirId) { . let hir_id = HirId::make_owner(module); 235 ( 0.00%) match self.tcx.hir_owner(module).map(|o| o.node) { 72 ( 0.00%) Some(OwnerNode::Item(&Item { span, kind: ItemKind::Mod(ref m), .. })) => { . (m, span, hir_id) . } 33 ( 0.00%) Some(OwnerNode::Crate(item)) => (item, item.inner, hir_id), . node => panic!("not a module: {:?}", node), . } 423 ( 0.00%) } . . /// Walks the contents of a crate. See also `Crate::visit_all_items`. 11 ( 0.00%) pub fn walk_toplevel_module(self, visitor: &mut impl Visitor<'hir>) { 30 ( 0.00%) let (top_mod, span, hir_id) = self.get_module(CRATE_DEF_ID); . visitor.visit_mod(top_mod, span, hir_id); 8 ( 0.00%) } . . /// Walks the attributes in a crate. 20 ( 0.00%) pub fn walk_attributes(self, visitor: &mut impl Visitor<'hir>) { 2 ( 0.00%) let krate = self.krate(); . for (owner, info) in krate.owners.iter_enumerated() { 3,344 ( 0.00%) if let Some(info) = info { . for (local_id, attrs) in info.attrs.map.iter() { . let id = HirId { owner, local_id: *local_id }; . for a in *attrs { 3,985 ( 0.00%) visitor.visit_attribute(id, a) . } . } . } . } 16 ( 0.00%) } . . /// Visits all items in the crate in some deterministic (but . /// unspecified) order. If you just need to process every item, . /// but don't care about nesting, this method is the best choice. . /// . /// If you do care about nesting -- usually because your algorithm . /// follows lexical scoping rules -- then you want a different . /// approach. You should override `visit_nested_item` in your . /// visitor and then call `intravisit::walk_crate` instead. 144 ( 0.00%) pub fn visit_all_item_likes(&self, visitor: &mut V) . where . V: itemlikevisit::ItemLikeVisitor<'hir>, . { 20 ( 0.00%) let krate = self.krate(); 70 ( 0.00%) for owner in krate.owners.iter().filter_map(Option::as_ref) { 14,124 ( 0.00%) match owner.node() { 12,728 ( 0.00%) OwnerNode::Item(item) => visitor.visit_item(item), . OwnerNode::ForeignItem(item) => visitor.visit_foreign_item(item), 366 ( 0.00%) OwnerNode::ImplItem(item) => visitor.visit_impl_item(item), . OwnerNode::TraitItem(item) => visitor.visit_trait_item(item), . OwnerNode::Crate(_) => {} . } . } 144 ( 0.00%) } . . /// A parallel version of `visit_all_item_likes`. . pub fn par_visit_all_item_likes(&self, visitor: &V) . where . V: itemlikevisit::ParItemLikeVisitor<'hir> + Sync + Send, . { 1 ( 0.00%) let krate = self.krate(); 2 ( 0.00%) par_for_each_in(&krate.owners.raw, |owner| match owner.as_ref().map(OwnerInfo::node) { 296 ( 0.00%) Some(OwnerNode::Item(item)) => visitor.visit_item(item), . Some(OwnerNode::ForeignItem(item)) => visitor.visit_foreign_item(item), 122 ( 0.00%) Some(OwnerNode::ImplItem(item)) => visitor.visit_impl_item(item), 9 ( 0.00%) Some(OwnerNode::TraitItem(item)) => visitor.visit_trait_item(item), . Some(OwnerNode::Crate(_)) | None => {} . }) . } . 1,118 ( 0.00%) pub fn visit_item_likes_in_module(&self, module: LocalDefId, visitor: &mut V) . where . V: ItemLikeVisitor<'hir>, . { 143 ( 0.00%) let module = self.tcx.hir_module_items(module); . 156 ( 0.00%) for id in module.items.iter() { 13,320 ( 0.00%) visitor.visit_item(self.item(*id)); . } . 156 ( 0.00%) for id in module.trait_items.iter() { 360 ( 0.00%) visitor.visit_trait_item(self.trait_item(*id)); . } . 156 ( 0.00%) for id in module.impl_items.iter() { 4,758 ( 0.00%) visitor.visit_impl_item(self.impl_item(*id)); . } . 156 ( 0.00%) for id in module.foreign_items.iter() { . visitor.visit_foreign_item(self.foreign_item(*id)); . } 1,144 ( 0.00%) } . 46 ( 0.00%) pub fn for_each_module(&self, f: impl Fn(LocalDefId)) { . let mut queue = VecDeque::new(); . queue.push_back(CRATE_DEF_ID); . 104 ( 0.00%) while let Some(id) = queue.pop_front() { . f(id); 39 ( 0.00%) let items = self.tcx.hir_module_items(id); 416 ( 0.00%) queue.extend(items.submodules.iter().copied()) . } 40 ( 0.00%) } . . #[cfg(not(parallel_compiler))] . #[inline] . pub fn par_for_each_module(&self, f: impl Fn(LocalDefId)) { 4 ( 0.00%) self.for_each_module(f) . } . . #[cfg(parallel_compiler)] . pub fn par_for_each_module(&self, f: impl Fn(LocalDefId) + Sync) { . use rustc_data_structures::sync::{par_iter, ParallelIterator}; . par_iter_submodules(self.tcx, CRATE_DEF_ID, &f); . . fn par_iter_submodules(tcx: TyCtxt<'_>, module: LocalDefId, f: &F) -- line 699 ---------------------------------------- -- line 703 ---------------------------------------- . (*f)(module); . let items = tcx.hir_module_items(module); . par_iter(&items.submodules[..]).for_each(|&sm| par_iter_submodules(tcx, sm, f)); . } . } . . /// Returns an iterator for the nodes in the ancestor tree of the `current_id` . /// until the crate root is reached. Prefer this over your own loop using `get_parent_node`. 374 ( 0.00%) pub fn parent_iter(self, current_id: HirId) -> ParentHirIterator<'hir> { . ParentHirIterator { current_id, map: self } 1,524 ( 0.00%) } . . /// Returns an iterator for the nodes in the ancestor tree of the `current_id` . /// until the crate root is reached. Prefer this over your own loop using `get_parent_node`. . pub fn parent_owner_iter(self, current_id: HirId) -> ParentOwnerIterator<'hir> { . ParentOwnerIterator { current_id, map: self } 8,047 ( 0.00%) } . . /// Checks if the node is left-hand side of an assignment. . pub fn is_lhs(&self, id: HirId) -> bool { . match self.find(self.get_parent_node(id)) { . Some(Node::Expr(expr)) => match expr.kind { . ExprKind::Assign(lhs, _rhs, _span) => lhs.hir_id == id, . _ => false, . }, -- line 727 ---------------------------------------- -- line 752 ---------------------------------------- . /// ``` . /// fn foo(x: usize) -> bool { . /// loop { . /// true // If `get_return_block` gets passed the `id` corresponding . /// } // to this, it will return `None`. . /// false . /// } . /// ``` 63 ( 0.00%) pub fn get_return_block(&self, id: HirId) -> Option { 7 ( 0.00%) let mut iter = self.parent_iter(id).peekable(); . let mut ignore_tail = false; 28 ( 0.00%) if let Some(node) = self.find(id) { 28 ( 0.00%) if let Node::Expr(Expr { kind: ExprKind::Ret(_), .. }) = node { . // When dealing with `return` statements, we don't care about climbing only tail . // expressions. . ignore_tail = true; . } . } 134 ( 0.00%) while let Some((hir_id, node)) = iter.next() { 518 ( 0.00%) if let (Some((_, next_node)), false) = (iter.peek(), ignore_tail) { . match next_node { . Node::Block(Block { expr: None, .. }) => return None, . // The current node is not the tail expression of its parent. . Node::Block(Block { expr: Some(e), .. }) if hir_id != e.hir_id => return None, . _ => {} . } . } 572 ( 0.00%) match node { . Node::Item(_) . | Node::ForeignItem(_) . | Node::TraitItem(_) . | Node::Expr(Expr { kind: ExprKind::Closure(..), .. }) . | Node::ImplItem(_) => return Some(hir_id), . // Ignore `return`s on the first iteration . Node::Expr(Expr { kind: ExprKind::Loop(..) | ExprKind::Ret(..), .. }) . | Node::Local(_) => { . return None; . } . _ => {} . } . } . None 70 ( 0.00%) } . . /// Retrieves the `HirId` for `id`'s parent item, or `id` itself if no . /// parent item is in this map. The "parent item" is the closest parent node . /// in the HIR which is recorded by the map and is an item, either an item . /// in a module, trait, or impl. 2,397 ( 0.00%) pub fn get_parent_item(&self, hir_id: HirId) -> LocalDefId { 21,605 ( 0.00%) if let Some((def_id, _node)) = self.parent_owner_iter(hir_id).next() { . def_id . } else { . CRATE_DEF_ID . } 4,794 ( 0.00%) } . . /// Returns the `HirId` of `id`'s nearest module parent, or `id` itself if no . /// module parent is in this map. . pub(super) fn get_module_parent_node(&self, hir_id: HirId) -> LocalDefId { 2,600 ( 0.00%) for (def_id, node) in self.parent_owner_iter(hir_id) { 1,398 ( 0.00%) if let OwnerNode::Item(&Item { kind: ItemKind::Mod(_), .. }) = node { . return def_id; . } . } . CRATE_DEF_ID . } . . /// When on an if expression, a match arm tail expression or a match arm, give back . /// the enclosing `if` or `match` expression. -- line 820 ---------------------------------------- -- line 885 ---------------------------------------- . } . } . bug!( . "expected foreign mod or inlined parent, found {}", . self.node_to_string(HirId::make_owner(parent)) . ) . } . 10,220 ( 0.00%) pub fn expect_item(&self, id: LocalDefId) -> &'hir Item<'hir> { 4,380 ( 0.00%) match self.tcx.hir_owner(id) { . Some(Owner { node: OwnerNode::Item(item), .. }) => item, . _ => bug!("expected item, found {}", self.node_to_string(HirId::make_owner(id))), . } 11,680 ( 0.00%) } . 1,708 ( 0.00%) pub fn expect_impl_item(&self, id: LocalDefId) -> &'hir ImplItem<'hir> { 732 ( 0.00%) match self.tcx.hir_owner(id) { . Some(Owner { node: OwnerNode::ImplItem(item), .. }) => item, . _ => bug!("expected impl item, found {}", self.node_to_string(HirId::make_owner(id))), . } 1,952 ( 0.00%) } . 126 ( 0.00%) pub fn expect_trait_item(&self, id: LocalDefId) -> &'hir TraitItem<'hir> { 54 ( 0.00%) match self.tcx.hir_owner(id) { . Some(Owner { node: OwnerNode::TraitItem(item), .. }) => item, . _ => bug!("expected trait item, found {}", self.node_to_string(HirId::make_owner(id))), . } 144 ( 0.00%) } . . pub fn expect_variant(&self, id: HirId) -> &'hir Variant<'hir> { . match self.find(id) { . Some(Node::Variant(variant)) => variant, . _ => bug!("expected variant, found {}", self.node_to_string(id)), . } . } . -- line 920 ---------------------------------------- -- line 929 ---------------------------------------- . . pub fn expect_expr(&self, id: HirId) -> &'hir Expr<'hir> { . match self.find(id) { . Some(Node::Expr(expr)) => expr, . _ => bug!("expected expr, found {}", self.node_to_string(id)), . } . } . 2,745 ( 0.00%) pub fn opt_name(&self, id: HirId) -> Option { 955 ( 0.00%) Some(match self.get(id) { . Node::Item(i) => i.ident.name, . Node::ForeignItem(fi) => fi.ident.name, . Node::ImplItem(ii) => ii.ident.name, . Node::TraitItem(ti) => ti.ident.name, . Node::Variant(v) => v.ident.name, . Node::Field(f) => f.ident.name, . Node::Lifetime(lt) => lt.name.ident().name, 855 ( 0.00%) Node::GenericParam(param) => param.name.ident().name, 40 ( 0.00%) Node::Binding(&Pat { kind: PatKind::Binding(_, _, l, _), .. }) => l.name, . Node::Ctor(..) => self.name(HirId::make_owner(self.get_parent_item(id))), . _ => return None, . }) 1,525 ( 0.00%) } . 2,360 ( 0.00%) pub fn name(&self, id: HirId) -> Symbol { 935 ( 0.00%) match self.opt_name(id) { . Some(name) => name, . None => bug!("no name for {}", self.node_to_string(id)), . } 1,770 ( 0.00%) } . . /// Given a node ID, gets a list of attributes associated with the AST . /// corresponding to the node-ID. 1,771,434 ( 0.10%) pub fn attrs(&self, id: HirId) -> &'hir [ast::Attribute] { 253,062 ( 0.01%) self.tcx.hir_attrs(id.owner).get(id.local_id) 2,024,496 ( 0.12%) } . . /// Gets the span of the definition of the specified HIR node. . /// This is used by `tcx.get_span` 2,361 ( 0.00%) pub fn span(&self, hir_id: HirId) -> Span { 52,899 ( 0.00%) self.opt_span(hir_id) . .unwrap_or_else(|| bug!("hir::map::Map::span: id not in map: {:?}", hir_id)) 2,361 ( 0.00%) } . 102,025 ( 0.01%) pub fn opt_span(&self, hir_id: HirId) -> Option { 102,025 ( 0.01%) let span = match self.find(hir_id)? { . Node::Param(param) => param.span, 848 ( 0.00%) Node::Item(item) => match &item.kind { . ItemKind::Fn(sig, _, _) => sig.span, 592 ( 0.00%) _ => item.span, . }, . Node::ForeignItem(foreign_item) => foreign_item.span, 36 ( 0.00%) Node::TraitItem(trait_item) => match &trait_item.kind { 36 ( 0.00%) TraitItemKind::Fn(sig, _) => sig.span, . _ => trait_item.span, . }, 916 ( 0.00%) Node::ImplItem(impl_item) => match &impl_item.kind { 896 ( 0.00%) ImplItemKind::Fn(sig, _) => sig.span, 20 ( 0.00%) _ => impl_item.span, . }, 192 ( 0.00%) Node::Variant(variant) => variant.span, 68 ( 0.00%) Node::Field(field) => field.span, 70 ( 0.00%) Node::AnonConst(constant) => self.body(constant.body).value.span, . Node::Expr(expr) => expr.span, . Node::Stmt(stmt) => stmt.span, . Node::PathSegment(seg) => seg.ident.span, . Node::Ty(ty) => ty.span, . Node::TraitRef(tr) => tr.path.span, . Node::Binding(pat) => pat.span, . Node::Pat(pat) => pat.span, . Node::Arm(arm) => arm.span, . Node::Block(block) => block.span, 703 ( 0.00%) Node::Ctor(..) => match self.find(self.get_parent_node(hir_id))? { . Node::Item(item) => item.span, . Node::Variant(variant) => variant.span, . _ => unreachable!(), . }, . Node::Lifetime(lifetime) => lifetime.span, . Node::GenericParam(param) => param.span, . Node::Visibility(&Spanned { . node: VisibilityKind::Restricted { ref path, .. }, . .. . }) => path.span, . Node::Infer(i) => i.span, . Node::Visibility(v) => bug!("unexpected Visibility {:?}", v), . Node::Local(local) => local.span, 4 ( 0.00%) Node::Crate(item) => item.inner, . }; . Some(span) 145,750 ( 0.01%) } . . /// Like `hir.span()`, but includes the body of function items . /// (instead of just the function header) . pub fn span_with_body(&self, hir_id: HirId) -> Span { . match self.find(hir_id) { . Some(Node::TraitItem(item)) => item.span, . Some(Node::ImplItem(impl_item)) => impl_item.span, . Some(Node::Item(item)) => item.span, . Some(_) => self.span(hir_id), . _ => bug!("hir::map::Map::span_with_body: id not in map: {:?}", hir_id), . } . } . 206 ( 0.00%) pub fn span_if_local(&self, id: DefId) -> Option { 1,487 ( 0.00%) id.as_local().and_then(|id| self.opt_span(self.local_def_id_to_hir_id(id))) 309 ( 0.00%) } . . pub fn res_span(&self, res: Res) -> Option { . match res { . Res::Err => None, . Res::Local(id) => Some(self.span(id)), . res => self.span_if_local(res.opt_def_id()?), . } . } -- line 1042 ---------------------------------------- -- line 1062 ---------------------------------------- . } . . impl<'hir> intravisit::Map<'hir> for Map<'hir> { . fn find(&self, hir_id: HirId) -> Option> { . self.find(hir_id) . } . . fn body(&self, id: BodyId) -> &'hir Body<'hir> { 3,438 ( 0.00%) self.body(id) . } . . fn item(&self, id: ItemId) -> &'hir Item<'hir> { 3,728 ( 0.00%) self.item(id) . } . . fn trait_item(&self, id: TraitItemId) -> &'hir TraitItem<'hir> { 135 ( 0.00%) self.trait_item(id) . } . . fn impl_item(&self, id: ImplItemId) -> &'hir ImplItem<'hir> { 1,708 ( 0.00%) self.impl_item(id) . } . . fn foreign_item(&self, id: ForeignItemId) -> &'hir ForeignItem<'hir> { . self.foreign_item(id) . } . } . 7 ( 0.00%) pub(super) fn crate_hash(tcx: TyCtxt<'_>, crate_num: CrateNum) -> Svh { . debug_assert_eq!(crate_num, LOCAL_CRATE); . let krate = tcx.hir_crate(()); 3 ( 0.00%) let hir_body_hash = krate.hir_hash; . . let upstream_crates = upstream_crates(tcx); . . // We hash the final, remapped names of all local source files so we . // don't have to include the path prefix remapping commandline args. . // If we included the full mapping in the SVH, we could only have . // reproducible builds by compiling from the same directory. So we just . // hash the result of the mapping instead of the mapping itself. 2 ( 0.00%) let mut source_file_names: Vec<_> = tcx . .sess . .source_map() . .files() . .iter() . .filter(|source_file| source_file.cnum == LOCAL_CRATE) 14 ( 0.00%) .map(|source_file| source_file.name_hash) . .collect(); . . source_file_names.sort_unstable(); . . let mut hcx = tcx.create_stable_hashing_context(); . let mut stable_hasher = StableHasher::new(); . hir_body_hash.hash_stable(&mut hcx, &mut stable_hasher); . upstream_crates.hash_stable(&mut hcx, &mut stable_hasher); . source_file_names.hash_stable(&mut hcx, &mut stable_hasher); 3 ( 0.00%) if tcx.sess.opts.debugging_opts.incremental_relative_spans { . let definitions = &tcx.untracked_resolutions.definitions; . let mut owner_spans: Vec<_> = krate . .owners . .iter_enumerated() . .filter_map(|(def_id, info)| { . let _ = info.as_ref()?; . let def_path_hash = definitions.def_path_hash(def_id); . let span = definitions.def_span(def_id); . debug_assert_eq!(span.parent(), None); . Some((def_path_hash, span)) . }) . .collect(); . owner_spans.sort_unstable_by_key(|bn| bn.0); . owner_spans.hash_stable(&mut hcx, &mut stable_hasher); . } 3 ( 0.00%) tcx.sess.opts.dep_tracking_hash(true).hash_stable(&mut hcx, &mut stable_hasher); 2 ( 0.00%) tcx.sess.local_stable_crate_id().hash_stable(&mut hcx, &mut stable_hasher); . . let crate_hash: Fingerprint = stable_hasher.finish(); 1 ( 0.00%) Svh::new(crate_hash.to_smaller_hash()) 9 ( 0.00%) } . . fn upstream_crates(tcx: TyCtxt<'_>) -> Vec<(StableCrateId, Svh)> { . let mut upstream_crates: Vec<_> = tcx . .crates(()) . .iter() . .map(|&cnum| { 15 ( 0.00%) let stable_crate_id = tcx.resolutions(()).cstore.stable_crate_id(cnum); 3 ( 0.00%) let hash = tcx.crate_hash(cnum); . (stable_crate_id, hash) . }) . .collect(); . upstream_crates.sort_unstable_by_key(|&(stable_crate_id, _)| stable_crate_id); . upstream_crates . } . . fn hir_id_to_string(map: &Map<'_>, id: HirId) -> String { -- line 1155 ---------------------------------------- -- line 1238 ---------------------------------------- . Some(Node::Lifetime(_)) => node_str("lifetime"), . Some(Node::GenericParam(ref param)) => format!("generic_param {:?}{}", param, id_str), . Some(Node::Visibility(ref vis)) => format!("visibility {:?}{}", vis, id_str), . Some(Node::Crate(..)) => String::from("root_crate"), . None => format!("unknown node{}", id_str), . } . } . 117 ( 0.00%) pub(super) fn hir_module_items(tcx: TyCtxt<'_>, module_id: LocalDefId) -> ModuleItems { 78 ( 0.00%) let mut collector = ModuleCollector { . tcx, . submodules: Vec::default(), . items: Vec::default(), . trait_items: Vec::default(), . impl_items: Vec::default(), . foreign_items: Vec::default(), . }; . 65 ( 0.00%) let (hir_mod, span, hir_id) = tcx.hir().get_module(module_id); . collector.visit_mod(hir_mod, span, hir_id); . 208 ( 0.00%) let ModuleCollector { submodules, items, trait_items, impl_items, foreign_items, .. } = . collector; 143 ( 0.00%) return ModuleItems { 52 ( 0.00%) submodules: submodules.into_boxed_slice(), 52 ( 0.00%) items: items.into_boxed_slice(), 52 ( 0.00%) trait_items: trait_items.into_boxed_slice(), 52 ( 0.00%) impl_items: impl_items.into_boxed_slice(), 52 ( 0.00%) foreign_items: foreign_items.into_boxed_slice(), . }; . . struct ModuleCollector<'tcx> { . tcx: TyCtxt<'tcx>, . submodules: Vec, . items: Vec, . trait_items: Vec, . impl_items: Vec, . foreign_items: Vec, . } . . impl<'hir> Visitor<'hir> for ModuleCollector<'hir> { . type NestedFilter = nested_filter::All; . . fn nested_visit_map(&mut self) -> Self::Map { 590 ( 0.00%) self.tcx.hir() . } . 1,480 ( 0.00%) fn visit_item(&mut self, item: &'hir Item<'hir>) { 888 ( 0.00%) self.items.push(item.item_id()); 592 ( 0.00%) if let ItemKind::Mod(..) = item.kind { . // If this declares another module, do not recurse inside it. 12 ( 0.00%) self.submodules.push(item.def_id); . } else { 1,704 ( 0.00%) intravisit::walk_item(self, item) . } 48 ( 0.00%) } . . fn visit_trait_item(&mut self, item: &'hir TraitItem<'hir>) { 27 ( 0.00%) self.trait_items.push(item.trait_item_id()); 27 ( 0.00%) intravisit::walk_trait_item(self, item) . } . . fn visit_impl_item(&mut self, item: &'hir ImplItem<'hir>) { 366 ( 0.00%) self.impl_items.push(item.impl_item_id()); 366 ( 0.00%) intravisit::walk_impl_item(self, item) . } . . fn visit_foreign_item(&mut self, item: &'hir ForeignItem<'hir>) { . self.foreign_items.push(item.foreign_item_id()); . intravisit::walk_foreign_item(self, item) . } . } 104 ( 0.00%) } 450,169 ( 0.03%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/middle/region.rs -------------------------------------------------------------------------------- Ir -- line 77 ---------------------------------------- . // . // FIXME(pnkfelix): this currently derives `PartialOrd` and `Ord` to . // placate the same deriving in `ty::FreeRegion`, but we may want to . // actually attach a more meaningful ordering to scopes than the one . // generated via deriving here. . #[derive(Clone, PartialEq, PartialOrd, Eq, Ord, Hash, Copy, TyEncodable, TyDecodable)] . #[derive(HashStable)] . pub struct Scope { 29,261 ( 0.00%) pub id: hir::ItemLocalId, 545,673 ( 0.03%) pub data: ScopeData, . } . . impl fmt::Debug for Scope { . fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result { . match self.data { . ScopeData::Node => write!(fmt, "Node({:?})", self.id), . ScopeData::CallSite => write!(fmt, "CallSite({:?})", self.id), . ScopeData::Arguments => write!(fmt, "Arguments({:?})", self.id), -- line 94 ---------------------------------------- -- line 99 ---------------------------------------- . "Remainder {{ block: {:?}, first_statement_index: {}}}", . self.id, . fsi.as_u32(), . ), . } . } . } . 2,460,411 ( 0.14%) #[derive(Clone, PartialEq, PartialOrd, Eq, Ord, Hash, Debug, Copy, TyEncodable, TyDecodable)] . #[derive(HashStable)] . pub enum ScopeData { . Node, . . /// Scope of the call-site for a function or closure . /// (outlives the arguments as well as the body). . CallSite, . -- line 115 ---------------------------------------- -- line 159 ---------------------------------------- . /// . /// N.B., likely to be replaced as API is refined; e.g., pnkfelix . /// anticipates `fn entry_node_id` and `fn each_exit_node_id`. . pub fn item_local_id(&self) -> hir::ItemLocalId { . self.id . } . . pub fn hir_id(&self, scope_tree: &ScopeTree) -> Option { 13,028 ( 0.00%) scope_tree . .root_body . .map(|hir_id| hir::HirId { owner: hir_id.owner, local_id: self.item_local_id() }) . } . . /// Returns the span of this `Scope`. Note that in general the . /// returned span may not correspond to the span of any `NodeId` in . /// the AST. 91,196 ( 0.01%) pub fn span(&self, tcx: TyCtxt<'_>, scope_tree: &ScopeTree) -> Span { 26,056 ( 0.00%) let hir_id = match self.hir_id(scope_tree) { . Some(hir_id) => hir_id, . None => return DUMMY_SP, . }; 52,112 ( 0.00%) let span = tcx.hir().span(hir_id); 52,112 ( 0.00%) if let ScopeData::Remainder(first_statement_index) = self.data { 1,446 ( 0.00%) if let Node::Block(ref blk) = tcx.hir().get(hir_id) { . // Want span for scope starting after the . // indexed statement and ending at end of . // `blk`; reuse span of `blk` and shift `lo` . // forward to end of indexed statement. . // . // (This is the special case alluded to in the . // doc-comment for this method) . 1,928 ( 0.00%) let stmt_span = blk.stmts[first_statement_index.index()].span; . . // To avoid issues with macro-generated spans, the span . // of the statement must be nested in that of the block. 476 ( 0.00%) if span.lo() <= stmt_span.lo() && stmt_span.lo() <= span.hi() { 916 ( 0.00%) return span.with_lo(stmt_span.lo()); . } . } . } . span 117,252 ( 0.01%) } . } . . pub type ScopeDepth = u32; . . /// The region scope tree encodes information about region relationships. . #[derive(Default, Debug)] . pub struct ScopeTree { . /// If not empty, this body is the root of this region hierarchy. -- line 209 ---------------------------------------- -- line 321 ---------------------------------------- . /// The `Span` of the yield. . pub span: Span, . /// The number of expressions and patterns appearing before the `yield` in the body, plus one. . pub expr_and_pat_count: usize, . pub source: hir::YieldSource, . } . . impl ScopeTree { 184,056 ( 0.01%) pub fn record_scope_parent(&mut self, child: Scope, parent: Option<(Scope, ScopeDepth)>) { . debug!("{:?}.parent = {:?}", child, parent); . 61,352 ( 0.00%) if let Some(p) = parent { . let prev = self.parent_map.insert(child, p); 30,272 ( 0.00%) assert!(prev.is_none()); . } . . // Record the destruction scopes for later so we can query them. 61,352 ( 0.00%) if let ScopeData::Destruction = child.data { . self.destruction_scopes.insert(child.item_local_id(), child); . } 117,456 ( 0.01%) } . 54,206 ( 0.00%) pub fn opt_destruction_scope(&self, n: hir::ItemLocalId) -> Option { . self.destruction_scopes.get(&n).cloned() 54,206 ( 0.00%) } . . pub fn record_var_scope(&mut self, var: hir::ItemLocalId, lifetime: Scope) { . debug!("record_var_scope(sub={:?}, sup={:?})", var, lifetime); 448 ( 0.00%) assert!(var != lifetime.item_local_id()); . self.var_map.insert(var, lifetime); . } . . pub fn record_rvalue_scope(&mut self, var: hir::ItemLocalId, lifetime: Option) { . debug!("record_rvalue_scope(sub={:?}, sup={:?})", var, lifetime); 84 ( 0.00%) if let Some(lifetime) = lifetime { . assert!(var != lifetime.item_local_id()); . } . self.rvalue_scopes.insert(var, lifetime); . } . . /// Returns the narrowest scope that encloses `id`, if any. . pub fn opt_encl_scope(&self, id: Scope) -> Option { . self.parent_map.get(&id).cloned().map(|(p, _)| p) . } . . /// Returns the lifetime of the local variable `var_id` 924 ( 0.00%) pub fn var_scope(&self, var_id: hir::ItemLocalId) -> Scope { . self.var_map . .get(&var_id) . .cloned() . .unwrap_or_else(|| bug!("no enclosing scope for id {:?}", var_id)) 924 ( 0.00%) } . . /// Returns the scope when the temp created by `expr_id` will be cleaned up. 369,243 ( 0.02%) pub fn temporary_scope(&self, expr_id: hir::ItemLocalId) -> Option { . // Check for a designated rvalue scope. 144 ( 0.00%) if let Some(&s) = self.rvalue_scopes.get(&expr_id) { . debug!("temporary_scope({:?}) = {:?} [custom]", expr_id, s); . return s; . } . . // Otherwise, locate the innermost terminating scope . // if there's one. Static items, for instance, won't . // have an enclosing scope, hence no scope will be . // returned. 52,701 ( 0.00%) let mut id = Scope { id: expr_id, data: ScopeData::Node }; . 1,294,211 ( 0.08%) while let Some(&(p, _)) = self.parent_map.get(&id) { 435,668 ( 0.03%) match p.data { . ScopeData::Destruction => { . debug!("temporary_scope({:?}) = {:?} [enclosing]", expr_id, id); . return Some(id); . } 139,715 ( 0.01%) _ => id = p, . } . } . . debug!("temporary_scope({:?}) = None", expr_id); . None 421,992 ( 0.02%) } . . /// Returns `true` if `subscope` is equal to or is lexically nested inside `superscope`, and . /// `false` otherwise. . /// . /// Used by clippy. . pub fn is_subscope_of(&self, subscope: Scope, superscope: Scope) -> bool { . let mut s = subscope; . debug!("is_subscope_of({:?}, {:?})", subscope, superscope); -- line 408 ---------------------------------------- 948,007 ( 0.06%) -------------------------------------------------------------------------------- The following files chosen for auto-annotation could not be found: -------------------------------------------------------------------------------- ./elf/../sysdeps/x86_64/dl-machine.h ./elf/dl-lookup.c ./elf/do-rel.h ./malloc/malloc.c ./string/../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S -------------------------------------------------------------------------------- Ir -------------------------------------------------------------------------------- 711,079,750 (41.36%) events annotated