-------------------------------------------------------------------------------- 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 wast --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg feature="default" --cfg feature="wasm-module" -C metadata=4dcab3fe997d8ee4 -C extra-filename=-4dcab3fe997d8ee4 --out-dir /usr/home/liquid/tmp/.tmpWmFrFh/target/debug/deps -L dependency=/usr/home/liquid/tmp/.tmpWmFrFh/target/debug/deps --extern leb128=/usr/home/liquid/tmp/.tmpWmFrFh/target/debug/deps/libleb128-6c4ab1da08ada30d.rmeta --extern memchr=/usr/home/liquid/tmp/.tmpWmFrFh/target/debug/deps/libmemchr-051150136306d02d.rmeta --extern unicode_width=/usr/home/liquid/tmp/.tmpWmFrFh/target/debug/deps/libunicode_width-fb275ef0b0e4657a.rmeta -Adeprecated -Aunknown-lints -Zincremental-verify-ich Data file: results/cgout-w-profiling-wast-39.0.0-Debug-Full Events recorded: Ir Events shown: Ir Event sort order: Ir Thresholds: 0.1 Include dirs: User annotated: Auto-annotation: on -------------------------------------------------------------------------------- Ir -------------------------------------------------------------------------------- 39,065,820,955 (100.0%) PROGRAM TOTALS -------------------------------------------------------------------------------- Ir file:function -------------------------------------------------------------------------------- 1,625,990,982 ( 4.16%) ???:llvm::FPPassManager::runOnFunction(llvm::Function&) 927,870,078 ( 2.38%) ./malloc/malloc.c:_int_free 914,488,867 ( 2.34%) ./malloc/malloc.c:_int_malloc 839,591,279 ( 2.15%) ???:llvm::SelectionDAG::Combine(llvm::CombineLevel, llvm::AAResults*, llvm::CodeGenOpt::Level) 553,069,561 ( 1.42%) ./malloc/malloc.c:malloc 410,761,364 ( 1.05%) ???:(anonymous namespace)::Verifier::visitInstruction(llvm::Instruction&) 406,685,750 ( 1.04%) ???:llvm::AttributeList::addAttributes(llvm::LLVMContext&, unsigned int, llvm::AttrBuilder const&) const 391,929,319 ( 1.00%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_trait_selection/src/traits/fulfill.rs:>::process_obligations::> 363,170,589 ( 0.93%) ./string/../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:__memcpy_avx_unaligned_erms 358,391,231 ( 0.92%) ???:(anonymous namespace)::RegAllocFast::allocateBasicBlock(llvm::MachineBasicBlock&) 356,047,198 ( 0.91%) ???:llvm::MachineInstr::addOperand(llvm::MachineFunction&, llvm::MachineOperand const&) 355,338,363 ( 0.91%) ???:llvm::PMDataManager::verifyPreservedAnalysis(llvm::Pass*) 345,609,971 ( 0.88%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_data_structures/src/obligation_forest/mod.rs:>::process_obligations::> 322,483,024 ( 0.83%) ???:llvm::raw_svector_ostream::write_impl(char const*, unsigned long) 316,026,786 ( 0.81%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/mod.rs:>::process_obligations::> 306,491,793 ( 0.78%) ???:(anonymous namespace)::Verifier::visitMDNode(llvm::MDNode const&, (anonymous namespace)::Verifier::AreDebugLocsAllowed) 281,442,944 ( 0.72%) ???:llvm::SelectionDAGISel::SelectCodeCommon(llvm::SDNode*, unsigned char const*, unsigned int) 267,934,943 ( 0.69%) ./malloc/malloc.c:free 253,827,624 ( 0.65%) ???:llvm::MCExpr::evaluateAsRelocatableImpl(llvm::MCValue&, llvm::MCAssembler const*, llvm::MCAsmLayout const*, llvm::MCFixup const*, llvm::DenseMap, llvm::detail::DenseMapPair > const*, bool) const 222,933,801 ( 0.57%) /usr/home/liquid/rust/worktree-benchmarking/library/alloc/src/vec/mod.rs:>::process_obligations::> 221,703,267 ( 0.57%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/type_variable.rs:>::process_obligations::> 211,712,791 ( 0.54%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/ena-0.14.0/src/unify/mod.rs:>, &mut rustc_infer::infer::undo_log::InferCtxtUndoLogs>>>::uninlined_get_root_key 210,594,648 ( 0.54%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/cell.rs:>::process_obligations::> 200,013,898 ( 0.51%) ./string/../sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S:__memset_avx2_erms 182,317,731 ( 0.47%) ???:(anonymous namespace)::VarLocBasedLDV::process(llvm::MachineInstr&, (anonymous namespace)::VarLocBasedLDV::OpenRangesSet&, (anonymous namespace)::VarLocBasedLDV::VarLocMap&, llvm::SmallVector<(anonymous namespace)::VarLocBasedLDV::TransferDebugPair, 4u>&) 179,144,391 ( 0.46%) ???:llvm::MCAsmLayout::getSymbolOffset(llvm::MCSymbol const&) const 175,495,540 ( 0.45%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_trait_selection/src/traits/select/mod.rs:>::process_obligations::> 165,125,372 ( 0.42%) ???:llvm::ScheduleDAGSDNodes::BuildSchedUnits() 161,155,997 ( 0.41%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/slice/iter/macros.rs:>::process_obligations::> 152,973,188 ( 0.39%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/ena-0.14.0/src/snapshot_vec.rs:>::process_obligations::> 144,885,696 ( 0.37%) ???:llvm::TargetLoweringBase::getTypeConversion(llvm::LLVMContext&, llvm::EVT) const 142,438,694 ( 0.36%) ???:llvm::TargetRegisterInfo::shouldRealignStack(llvm::MachineFunction const&) const 137,793,700 ( 0.35%) ???:(anonymous namespace)::Verifier::visitCallBase(llvm::CallBase&) 135,928,306 ( 0.35%) ???:llvm::TargetRegisterInfo::checkAllSuperRegsMarked(llvm::BitVector const&, llvm::ArrayRef) const 135,772,742 ( 0.35%) ???:llvm::coro::declaresIntrinsics(llvm::Module const&, std::initializer_list) 133,940,929 ( 0.34%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/mod.rs:, (), core::hash::BuildHasherDefault>>::from_hash::>::{closure#0}> 133,107,315 ( 0.34%) ./malloc/malloc.c:malloc_consolidate 132,760,844 ( 0.34%) ???:(anonymous namespace)::TwoAddressInstructionPass::runOnMachineFunction(llvm::MachineFunction&) 131,703,804 ( 0.34%) ???:llvm::SmallSet >::insert(llvm::Register const&) 130,754,939 ( 0.33%) ???:llvm::MCAsmLayout::getFragmentOffset(llvm::MCFragment const*) const 126,822,754 ( 0.32%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/ena-0.14.0/src/unify/mod.rs:>::process_obligations::> 123,563,070 ( 0.32%) ???:llvm::StringMapImpl::LookupBucketFor(llvm::StringRef) 123,208,902 ( 0.32%) ./string/../sysdeps/x86_64/multiarch/strcmp-avx2.S:__strncmp_avx2 122,934,943 ( 0.31%) ./string/../sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S:__memcmp_avx2_movbe 121,939,356 ( 0.31%) ???:(anonymous namespace)::Verifier::verify(llvm::Function const&) [clone .llvm.4153962086227604281] 120,322,954 ( 0.31%) ???:(anonymous namespace)::X86MCCodeEmitter::emitPrefixImpl(unsigned int&, llvm::MCInst const&, llvm::MCSubtargetInfo const&, llvm::raw_ostream&) const 118,675,618 ( 0.30%) ???:llvm::MCObjectStreamer::emitBytes(llvm::StringRef) 111,286,442 ( 0.28%) ./string/../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:__memcpy_sse2_unaligned_erms 109,545,705 ( 0.28%) ???:llvm::SelectionDAG::MorphNodeTo(llvm::SDNode*, unsigned int, llvm::SDVTList, llvm::ArrayRef) 104,752,287 ( 0.27%) ???:llvm::MetadataTracking::track(void*, llvm::Metadata&, llvm::PointerUnion) 104,721,712 ( 0.27%) ???:(anonymous namespace)::Verifier::verifyFunctionAttrs(llvm::FunctionType*, llvm::AttributeList, llvm::Value const*, bool) 103,380,137 ( 0.26%) ???:llvm::DAGTypeLegalizer::run() 102,846,350 ( 0.26%) ???:multikeySort(llvm::MutableArrayRef*>, int) 102,716,498 ( 0.26%) ???:llvm::InstrEmitter::EmitMachineNode(llvm::SDNode*, bool, bool, llvm::DenseMap, llvm::detail::DenseMapPair >&) 102,407,990 ( 0.26%) ???:llvm::FoldingSetNodeID::AddInteger(unsigned int) 101,644,706 ( 0.26%) ./malloc/malloc.c:unlink_chunk.constprop.0 101,433,873 ( 0.26%) ???:llvm::DomTreeBuilder::SemiNCAInfo >::CalculateFromScratch(llvm::DominatorTreeBase&, llvm::DomTreeBuilder::SemiNCAInfo >::BatchUpdateInfo*) 101,170,487 ( 0.26%) ???:(anonymous namespace)::SelectionDAGLegalize::LegalizeOp(llvm::SDNode*) [clone .llvm.8386621111310650999] 93,041,338 ( 0.24%) ???:(anonymous namespace)::VarLocBasedLDV::ExtendRanges(llvm::MachineFunction&, llvm::TargetPassConfig*) [clone .llvm.4451506318407214204] 90,514,168 ( 0.23%) ???:llvm::FoldingSetBase::FindNodeOrInsertPos(llvm::FoldingSetNodeID const&, void*&, llvm::FoldingSetBase::FoldingSetInfo const&) 89,328,977 ( 0.23%) ???:llvm::MCContext::getOrCreateSymbol(llvm::Twine const&) 89,019,138 ( 0.23%) ???:(anonymous namespace)::PEI::runOnMachineFunction(llvm::MachineFunction&) 88,185,548 ( 0.23%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_data_structures/src/obligation_forest/mod.rs:>::apply_rewrites 88,062,419 ( 0.23%) ???:llvm::SelectionDAG::getConstant(llvm::ConstantInt const&, llvm::SDLoc const&, llvm::EVT, bool, bool) 86,855,095 ( 0.22%) ???:llvm::calculateDbgEntityHistory(llvm::MachineFunction const*, llvm::TargetRegisterInfo const*, llvm::DbgValueHistoryMap&, llvm::DbgLabelInstrMap&) 86,069,696 ( 0.22%) ???:llvm::SelectionDAG::Legalize() 85,608,385 ( 0.22%) ???:(anonymous namespace)::DAGCombiner::combine(llvm::SDNode*) 80,348,442 ( 0.21%) ./stdlib/msort.c:msort_with_tmp.part.0 78,206,203 ( 0.20%) ???:(anonymous namespace)::X86MCInstLower::Lower(llvm::MachineInstr const*, llvm::MCInst&) const 76,513,456 ( 0.20%) ???:(anonymous namespace)::ELFObjectWriter::recordRelocation(llvm::MCAssembler&, llvm::MCAsmLayout const&, llvm::MCFragment const*, llvm::MCFixup const&, llvm::MCValue, unsigned long&) [clone .llvm.14145361893594770252] 74,347,481 ( 0.19%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/ptr/mod.rs:>::process_obligations::> 74,051,596 ( 0.19%) ???:llvm::X86FrameLowering::hasFP(llvm::MachineFunction const&) const 73,627,978 ( 0.19%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_data_structures/src/obligation_forest/mod.rs:>::compress::<>::process_obligations>::{closure#0}> 72,490,492 ( 0.19%) ???:llvm::MachineFunction::CreateMachineInstr(llvm::MCInstrDesc const&, llvm::DebugLoc const&, bool) 70,843,184 ( 0.18%) ???:(anonymous namespace)::ScheduleDAGRRList::Schedule() [clone .llvm.6953762222372402862] 70,749,433 ( 0.18%) ???:(anonymous namespace)::Verifier::visitFunction(llvm::Function const&)::$_3::operator()(llvm::Instruction const&, llvm::MDNode const*) const 70,633,716 ( 0.18%) ???:(anonymous namespace)::X86MCCodeEmitter::encodeInstruction(llvm::MCInst const&, llvm::raw_ostream&, llvm::SmallVectorImpl&, llvm::MCSubtargetInfo const&) const 70,021,891 ( 0.18%) ???:llvm::FunctionLoweringInfo::set(llvm::Function const&, llvm::MachineFunction&, llvm::SelectionDAG*) 67,449,649 ( 0.17%) ???:llvm::PMDataManager::removeNotPreservedAnalysis(llvm::Pass*) 67,288,337 ( 0.17%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/sty.rs:::eq 66,210,808 ( 0.17%) ./malloc/malloc.c:realloc 66,100,031 ( 0.17%) ???:llvm::SmallPtrSetImplBase::insert_imp_big(void const*) 65,286,831 ( 0.17%) ???:llvm::DwarfDebug::beginInstruction(llvm::MachineInstr const*) 64,110,970 ( 0.16%) ???:llvm::DataLayout::getAlignment(llvm::Type*, bool) const 62,286,034 ( 0.16%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/slice/mod.rs:::lookup_source_file_idx 61,277,378 ( 0.16%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/map.rs:, (), core::hash::BuildHasherDefault>>::from_hash::>::{closure#0}> 61,175,337 ( 0.16%) ???:llvm::AttributeSetNode::get(llvm::LLVMContext&, llvm::AttrBuilder const&) 60,174,958 ( 0.15%) ???:llvm::MDNode::MDNode(llvm::LLVMContext&, unsigned int, llvm::Metadata::StorageType, llvm::ArrayRef, llvm::ArrayRef) 60,157,075 ( 0.15%) ???:llvm::FoldingSet::NodeEquals(llvm::FoldingSetBase const*, llvm::FoldingSetBase::Node*, llvm::FoldingSetNodeID const&, unsigned int, llvm::FoldingSetNodeID&) 60,152,229 ( 0.15%) ???:(anonymous namespace)::RegAllocFast::markRegUsedInInstr(unsigned short) 59,150,760 ( 0.15%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/context.rs:::intern_ty 58,808,591 ( 0.15%) ???:llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) 58,140,540 ( 0.15%) ???:(anonymous namespace)::ELFWriter::writeObject(llvm::MCAssembler&, llvm::MCAsmLayout const&) 57,634,165 ( 0.15%) ./string/../sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S:__memset_avx2_unaligned_erms 57,503,690 ( 0.15%) ???:llvm::MCAssembler::layout(llvm::MCAsmLayout&) 57,253,049 ( 0.15%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/num/uint_macros.rs:::short_write_process_buffer:: 56,688,789 ( 0.15%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/sty.rs:::hash:: 56,337,441 ( 0.14%) ???:(anonymous namespace)::CFIInstrInserter::runOnMachineFunction(llvm::MachineFunction&) 55,621,453 ( 0.14%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/slice/index.rs:>::process_obligations::> 55,482,135 ( 0.14%) ???:llvm::ScheduleDAGSDNodes::AddSchedEdges() 55,400,418 ( 0.14%) ???:llvm::raw_ostream::write(char const*, unsigned long) 54,906,494 ( 0.14%) ???:llvm::Twine::printOneChild(llvm::raw_ostream&, llvm::Twine::Child, llvm::Twine::NodeKind) const 52,363,994 ( 0.13%) ???:(anonymous namespace)::X86MCCodeEmitter::emitMemModRMByte(llvm::MCInst const&, unsigned int, unsigned int, unsigned long, bool, unsigned long, llvm::raw_ostream&, llvm::SmallVectorImpl&, llvm::MCSubtargetInfo const&, bool) const 52,071,907 ( 0.13%) ???:llvm::SelectionDAG::AssignTopologicalOrder() 51,214,160 ( 0.13%) ???:llvm::X86TargetMachine::getTargetTransformInfo(llvm::Function const&) 51,069,095 ( 0.13%) /tmp/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/../../../../gcc-5.5.0/libstdc++-v3/libsupc++/new_op.cc:operator new(unsigned long) 50,988,908 ( 0.13%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/mod.rs:>::apply_rewrites 50,655,124 ( 0.13%) ???:llvm::MachineFunctionPass::runOnFunction(llvm::Function&) 50,358,323 ( 0.13%) ???:llvm::MCELFStreamer::emitInstToData(llvm::MCInst const&, llvm::MCSubtargetInfo const&) 50,282,308 ( 0.13%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/smallvec-1.7.0/src/lib.rs:>::try_reserve 50,127,323 ( 0.13%) ???:llvm::AsmPrinter::emitFunctionBody() 49,920,174 ( 0.13%) ???:llvm::MCELFStreamer::emitLabel(llvm::MCSymbol*, llvm::SMLoc) 48,807,405 ( 0.12%) ???:llvm::X86RegisterInfo::eliminateFrameIndex(llvm::MachineInstrBundleIterator, int, unsigned int, llvm::RegScavenger*) const 47,314,466 ( 0.12%) ???:llvm::MCObjectStreamer::emitInstruction(llvm::MCInst const&, llvm::MCSubtargetInfo const&) 47,145,200 ( 0.12%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/map.rs:>, (), core::hash::BuildHasherDefault>>::from_hash::>>::{closure#0}> 47,031,695 ( 0.12%) ???:(anonymous namespace)::VarLocBasedLDV::collectIDsForRegs(llvm::SmallSet >&, llvm::SmallSet > const&, llvm::CoalescingBitVector const&, (anonymous namespace)::VarLocBasedLDV::VarLocMap const&) 46,938,199 ( 0.12%) ???:llvm::SelectionDAG::getRegister(unsigned int, llvm::EVT) 46,464,664 ( 0.12%) ???:llvm::MCDwarfLineAddr::Encode(llvm::MCContext&, llvm::MCDwarfLineTableParams, long, unsigned long, llvm::raw_ostream&) 46,380,311 ( 0.12%) ./malloc/malloc.c:_int_realloc 46,363,142 ( 0.12%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_index/src/vec.rs:>::process_obligations::> 45,861,303 ( 0.12%) ???:llvm::MDString::get(llvm::LLVMContext&, llvm::StringRef) 44,860,654 ( 0.11%) ???:llvm::LLVMContextImpl::~LLVMContextImpl() 44,363,608 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/mod.rs:::shallow_resolve_ty 43,778,572 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/slice/iter.rs:>::process_obligations::> 43,421,797 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/slice/mod.rs:::line_begin_pos 43,421,797 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/slice/mod.rs:::lookup_line 43,397,672 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/context.rs:::_intern_substs 43,054,892 ( 0.11%) ???:??? 42,841,880 ( 0.11%) ???:llvm::FoldingSet::NodeEquals(llvm::FoldingSetBase const*, llvm::FoldingSetBase::Node*, llvm::FoldingSetNodeID const&, unsigned int, llvm::FoldingSetNodeID&) 42,596,415 ( 0.11%) ???:llvm::DomTreeBuilder::SemiNCAInfo >::runSemiNCA(llvm::DominatorTreeBase&, unsigned int) 42,429,304 ( 0.11%) ???:(anonymous namespace)::X86AsmBackend::applyFixup(llvm::MCAssembler const&, llvm::MCFixup const&, llvm::MCValue const&, llvm::MutableArrayRef, unsigned long, bool, llvm::MCSubtargetInfo const*) const 41,924,681 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/library/std/src/sys/unix/alloc.rs:__rdl_alloc 41,416,449 ( 0.11%) ???:llvm::LazyCallGraph::Node::populateSlow() 40,910,100 ( 0.10%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/slice/iter/macros.rs:::_intern_substs 40,823,979 ( 0.10%) ???:(anonymous namespace)::RegAllocFast::setPhysReg(llvm::MachineInstr&, llvm::MachineOperand&, unsigned short) 40,664,612 ( 0.10%) ./string/../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:memcpy@GLIBC_2.2.5 39,702,526 ( 0.10%) ???:llvm::MCAssembler::layoutSectionOnce(llvm::MCAsmLayout&, llvm::MCSection&) 39,210,747 ( 0.10%) ???:llvm::TargetLoweringBase::ArgListEntry::setAttributes(llvm::CallBase const*, unsigned int) 39,069,469 ( 0.10%) ???:llvm::CoalescingBitVector::find(unsigned long) const -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/sty.rs -------------------------------------------------------------------------------- Ir -- line 21 ---------------------------------------- . use rustc_target::spec::abi; . use std::borrow::Cow; . 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)] 7 ( 0.00%) #[derive(HashStable, TypeFoldable, Lift)] . pub struct TypeAndMut<'tcx> { 47,765 ( 0.00%) pub ty: Ty<'tcx>, 238,825 ( 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 { 413,762 ( 0.00%) pub scope: DefId, 380,008 ( 0.00%) pub bound_region: BoundRegionKind, . } . 2,549,416 ( 0.01%) #[derive(Clone, PartialEq, PartialOrd, Eq, Ord, Hash, TyEncodable, TyDecodable, Copy)] 10,239 ( 0.00%) #[derive(HashStable)] . pub enum BoundRegionKind { . /// An anonymous region parameter for a given fn (&T) 64,367 ( 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. 19,836 ( 0.00%) BrNamed(DefId, Symbol), . . /// Anonymous region for the implicit env pointer parameter . /// to a closure . BrEnv, . } . 21,823 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, Hash, TyEncodable, TyDecodable, Debug, PartialOrd, Ord)] . #[derive(HashStable)] . pub struct BoundRegion { 460,351 ( 0.00%) pub var: BoundVar, 388,391 ( 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. 80,058,877 ( 0.20%) #[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable, Debug)] 1,069,051 ( 0.00%) #[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`. . Char, -- line 90 ---------------------------------------- -- 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. 15,002,054 ( 0.04%) 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]`. 60,960 ( 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`. 6,031,425 ( 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`. 149,372 ( 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. 16,880 ( 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. 247 ( 0.00%) pub fn new( . tcx: TyCtxt<'tcx>, . parts: ClosureSubstsParts<'tcx, Ty<'tcx>>, . ) -> ClosureSubsts<'tcx> { . ClosureSubsts { . substs: tcx.mk_substs( 494 ( 0.00%) parts.parent_substs.iter().copied().chain( 988 ( 0.00%) [parts.closure_kind_ty, parts.closure_sig_as_fn_ptr_ty, parts.tupled_upvars_ty] . .iter() . .map(|&ty| ty.into()), . ), . ), . } 494 ( 0.00%) } . . /// Divides the closure substs into their respective components. . /// The ordering assumed here must match that used by `ClosureSubsts::new` above. 9,074 ( 0.00%) fn split(self) -> ClosureSubstsParts<'tcx, GenericArg<'tcx>> { . match self.substs[..] { 61,334 ( 0.00%) [ 17,040 ( 0.00%) ref parent_substs @ .., 17,879 ( 0.00%) closure_kind_ty, 8,010 ( 0.00%) closure_sig_as_fn_ptr_ty, 13,854 ( 0.00%) tupled_upvars_ty, 36,296 ( 0.00%) ] => ClosureSubstsParts { . parent_substs, . closure_kind_ty, . closure_sig_as_fn_ptr_ty, . tupled_upvars_ty, . }, . _ => bug!("closure substs missing synthetics"), . } 27,222 ( 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. 2 ( 0.00%) pub fn is_valid(self) -> bool { 4 ( 0.00%) self.substs.len() >= 3 4 ( 0.00%) && matches!(self.split().tupled_upvars_ty.expect_ty().kind(), Tuple(_)) 4 ( 0.00%) } . . /// Returns the substitutions of the closure's parent. . 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] 6,618 ( 0.00%) pub fn upvar_tys(self) -> impl Iterator> + 'tcx { 7,911 ( 0.00%) match self.tupled_upvars_ty().kind() { . TyKind::Error(_) => None, 4,068 ( 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() 4,412 ( 0.00%) } . . /// Returns the tuple type representing the upvars for this closure. . #[inline] . pub fn tupled_upvars_ty(self) -> Ty<'tcx> { 43,591 ( 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)`. 3,358 ( 0.00%) pub fn kind_ty(self) -> Ty<'tcx> { . self.split().closure_kind_ty.expect_ty() 6,716 ( 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()`. 38 ( 0.00%) pub fn kind(self) -> ty::ClosureKind { 521 ( 0.00%) self.kind_ty().to_opt_closure_kind().unwrap() 76 ( 0.00%) } . . /// Extracts the signature from the closure. 4,027 ( 0.00%) pub fn sig(self) -> ty::PolyFnSig<'tcx> { . let ty = self.sig_as_fn_ptr_ty(); 8,054 ( 0.00%) match ty.kind() { 16,108 ( 0.00%) ty::FnPtr(sig) => *sig, . _ => bug!("closure_sig_as_fn_ptr_ty is not a fn-ptr: {:?}", ty.kind()), . } 12,081 ( 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 { 570 ( 0.00%) let tupled_tys = match self { 817 ( 0.00%) UpvarSubsts::Closure(substs) => substs.as_closure().tupled_upvars_ty(), . UpvarSubsts::Generator(substs) => substs.as_generator().tupled_upvars_ty(), . }; . 1,349 ( 0.00%) match tupled_tys.kind() { . TyKind::Error(_) => None, 1,102 ( 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> { 1,064 ( 0.00%) match self { 1,131 ( 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() . } . } . 110,776 ( 0.00%) #[derive(Debug, Copy, Clone, PartialEq, PartialOrd, Ord, Eq, Hash, TyEncodable, TyDecodable)] 123,138 ( 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`. 30 ( 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. 700 ( 0.00%) pub fn stable_cmp(&self, tcx: TyCtxt<'tcx>, other: &Self) -> Ordering { . use self::ExistentialPredicate::*; 592 ( 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, . } 840 ( 0.00%) } . } . . impl<'tcx> Binder<'tcx, ExistentialPredicate<'tcx>> { 13,563 ( 0.00%) pub fn with_self_ty(&self, tcx: TyCtxt<'tcx>, self_ty: Ty<'tcx>) -> ty::Predicate<'tcx> { . use crate::ty::ToPredicate; 7,535 ( 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) . } . } 12,056 ( 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 839 ---------------------------------------- . /// are the set `{Sync}`. . /// . /// 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. 1,663 ( 0.00%) pub fn principal(&self) -> Option>> { 11,229 ( 0.00%) self[0] 6,242 ( 0.00%) .map_bound(|this| match this { . ExistentialPredicate::Trait(tr) => Some(tr), . _ => None, 6,652 ( 0.00%) }) . .transpose() 4,989 ( 0.00%) } . 1,509 ( 0.00%) pub fn principal_def_id(&self) -> Option { . self.principal().map(|trait_ref| trait_ref.skip_binder().def_id) 3,018 ( 0.00%) } . . #[inline] . pub fn projection_bounds<'a>( . &'a self, . ) -> impl Iterator>> + 'a { . self.iter().filter_map(|predicate| { 36 ( 0.00%) predicate 256 ( 0.00%) .map_bound(|pred| match pred { 20 ( 0.00%) ExistentialPredicate::Projection(projection) => Some(projection), . _ => None, . }) . .transpose() . }) . } . . #[inline] . pub fn auto_traits<'a>(&'a self) -> impl Iterator + 'a { -- line 875 ---------------------------------------- -- 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. 35,440 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] 3,763,809 ( 0.01%) #[derive(HashStable, TypeFoldable)] . pub struct TraitRef<'tcx> { 8,168 ( 0.00%) pub def_id: DefId, 2,777,883 ( 0.01%) pub substs: SubstsRef<'tcx>, . } . . impl<'tcx> TraitRef<'tcx> { 5,596 ( 0.00%) pub fn new(def_id: DefId, substs: SubstsRef<'tcx>) -> TraitRef<'tcx> { . TraitRef { def_id, substs } 22,384 ( 0.00%) } . . /// Returns a `TraitRef` of the form `P0: Foo` where `Pi` . /// are the parameters defined on trait. 945 ( 0.00%) pub fn identity(tcx: TyCtxt<'tcx>, def_id: DefId) -> Binder<'tcx, TraitRef<'tcx>> { 420 ( 0.00%) ty::Binder::dummy(TraitRef { . def_id, 630 ( 0.00%) substs: InternalSubsts::identity_for_item(tcx, def_id), . }) 840 ( 0.00%) } . . #[inline] 27 ( 0.00%) pub fn self_ty(&self) -> Ty<'tcx> { . self.substs.type_at(0) 18 ( 0.00%) } . 30,952 ( 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); . 3,869 ( 0.00%) ty::TraitRef { def_id: trait_id, substs: tcx.intern_substs(&substs[..defs.params.len()]) } 42,559 ( 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 { 4,785 ( 0.00%) self.skip_binder().def_id 1,595 ( 0.00%) } . 11,896 ( 0.00%) pub fn to_poly_trait_predicate(&self) -> ty::PolyTraitPredicate<'tcx> { 23,792 ( 0.00%) self.map_bound(|trait_ref| ty::TraitPredicate { . trait_ref, . constness: ty::BoundConstness::NotConst, . polarity: ty::ImplPolarity::Positive, . }) 11,896 ( 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). 176 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] 61,745 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub struct ExistentialTraitRef<'tcx> { 8,164 ( 0.00%) pub def_id: DefId, 72,877 ( 0.00%) pub substs: SubstsRef<'tcx>, . } . . impl<'tcx> ExistentialTraitRef<'tcx> { 1,212 ( 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..]), . } 1,212 ( 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. 46 ( 0.00%) 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()); . 23 ( 0.00%) ty::TraitRef { def_id: self.def_id, substs: tcx.mk_substs_trait(self_ty, self.substs) } 115 ( 0.00%) } . } . . pub type PolyExistentialTraitRef<'tcx> = Binder<'tcx, ExistentialTraitRef<'tcx>>; . . impl<'tcx> PolyExistentialTraitRef<'tcx> { . pub fn def_id(&self) -> DefId { . self.skip_binder().def_id . } . . /// 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. 3,444 ( 0.00%) pub fn with_self_ty(&self, tcx: TyCtxt<'tcx>, self_ty: Ty<'tcx>) -> ty::PolyTraitRef<'tcx> { 4,396 ( 0.00%) self.map_bound(|trait_ref| trait_ref.with_self_ty(tcx, self_ty)) 4,592 ( 0.00%) } . } . 277,981 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] 15,535 ( 0.00%) #[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 . /// 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. 155,051 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)] 2,062,385 ( 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. 153,925 ( 0.00%) pub fn dummy(value: T) -> Binder<'tcx, T> { 663,104 ( 0.00%) assert!(!value.has_escaping_bound_vars()); 1,555,898 ( 0.00%) Binder(value, ty::List::empty()) 153,107 ( 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); . } 78,719 ( 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 { 5,258,319 ( 0.01%) self.0 . } . . pub fn bound_vars(&self) -> &'tcx List { 3,571 ( 0.00%) self.1 . } . . pub fn as_ref(&self) -> Binder<'tcx, &T> { 13,228 ( 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) . } . 2,240 ( 0.00%) pub fn map_bound>(self, f: F) -> Binder<'tcx, U> . where . F: FnOnce(T) -> U, . { 146,016 ( 0.00%) let value = f(self.0); . if cfg!(debug_assertions) { . let mut validator = ValidateBoundVars::new(self.1); . value.visit_with(&mut validator); . } 1,092,882 ( 0.00%) Binder(value, self.1) 2,264 ( 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); . } 48,189 ( 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); . } 70,012 ( 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>, . { 869,246 ( 0.00%) if self.0.has_escaping_bound_vars() { None } else { Some(self.skip_binder()) } 23,640 ( 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`. 2,555 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] 191,269 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub struct ProjectionTy<'tcx> { . /// The parameters of the associated item. 111,177 ( 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`. 119,331 ( 0.00%) pub item_def_id: DefId, . } . . impl<'tcx> ProjectionTy<'tcx> { 67,004 ( 0.00%) pub fn trait_def_id(&self, tcx: TyCtxt<'tcx>) -> DefId { 19,144 ( 0.00%) tcx.associated_item(self.item_def_id).container.id() 76,576 ( 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 15,204 ( 0.00%) pub fn trait_ref_and_own_substs( . &self, . tcx: TyCtxt<'tcx>, . ) -> (ty::TraitRef<'tcx>, &'tcx [ty::GenericArg<'tcx>]) { 6,516 ( 0.00%) let def_id = tcx.associated_item(self.item_def_id).container.id(); . let trait_generics = tcx.generics_of(def_id); 10,860 ( 0.00%) ( . ty::TraitRef { def_id, substs: self.substs.truncate_to(tcx, trait_generics) }, . &self.substs[trait_generics.count()..], . ) 19,548 ( 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. 83,952 ( 0.00%) pub fn trait_ref(&self, tcx: TyCtxt<'tcx>) -> ty::TraitRef<'tcx> { 9,328 ( 0.00%) let def_id = self.trait_def_id(tcx); 9,328 ( 0.00%) ty::TraitRef { def_id, substs: self.substs.truncate_to(tcx, tcx.generics_of(def_id)) } 102,608 ( 0.00%) } . 17,939 ( 0.00%) pub fn self_ty(&self) -> Ty<'tcx> { 53,817 ( 0.00%) self.substs.type_at(0) 35,878 ( 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. 353,851 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] 260,438 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub struct FnSig<'tcx> { 80,818 ( 0.00%) pub inputs_and_output: &'tcx List>, 556,940 ( 0.00%) pub c_variadic: bool, 111,753 ( 0.00%) pub unsafety: hir::Unsafety, 461,463 ( 0.00%) pub abi: abi::Abi, . } . . impl<'tcx> FnSig<'tcx> { 215,501 ( 0.00%) pub fn inputs(&self) -> &'tcx [Ty<'tcx>] { 962,930 ( 0.00%) &self.inputs_and_output[..self.inputs_and_output.len() - 1] 431,002 ( 0.00%) } . 118,978 ( 0.00%) pub fn output(&self) -> Ty<'tcx> { 959,438 ( 0.00%) self.inputs_and_output[self.inputs_and_output.len() - 1] 237,956 ( 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>]> { 46,407 ( 0.00%) self.map_bound_ref_unchecked(|fn_sig| fn_sig.inputs()) . } . #[inline] . pub fn input(&self, index: usize) -> ty::Binder<'tcx, Ty<'tcx>> { 68,411 ( 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) 2,588 ( 0.00%) } . #[inline] . pub fn output(&self) -> ty::Binder<'tcx, Ty<'tcx>> { 46,678 ( 0.00%) self.map_bound_ref(|fn_sig| fn_sig.output()) . } . pub fn c_variadic(&self) -> bool { 5,170 ( 0.00%) self.skip_binder().c_variadic 2,585 ( 0.00%) } . pub fn unsafety(&self) -> hir::Unsafety { 27,106 ( 0.00%) self.skip_binder().unsafety 13,553 ( 0.00%) } . pub fn abi(&self) -> abi::Abi { 288,016 ( 0.00%) self.skip_binder().abi 72,004 ( 0.00%) } . } . . pub type CanonicalPolyFnSig<'tcx> = Canonical<'tcx, Binder<'tcx, FnSig<'tcx>>>; . 88 ( 0.00%) #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] 1,860 ( 0.00%) #[derive(HashStable)] . pub struct ParamTy { 136 ( 0.00%) pub index: u32, . pub name: Symbol, . } . . impl<'tcx> ParamTy { 146 ( 0.00%) pub fn new(index: u32, name: Symbol) -> ParamTy { . ParamTy { index, name } 73 ( 0.00%) } . . pub fn for_def(def: &ty::GenericParamDef) -> ParamTy { 52 ( 0.00%) ParamTy::new(def.index, def.name) 26 ( 0.00%) } . . #[inline] . 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)] 23 ( 0.00%) #[derive(HashStable)] . pub struct ParamConst { 266 ( 0.00%) pub index: u32, 266 ( 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 22,583,638 ( 0.06%) #[derive(Clone, PartialEq, Eq, Hash, Copy, TyEncodable, TyDecodable, PartialOrd, Ord)] 4,178 ( 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. 772,378 ( 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, . } . 51,168 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, Hash, TyEncodable, TyDecodable, Debug, PartialOrd, Ord)] . pub struct EarlyBoundRegion { 268,806 ( 0.00%) pub def_id: DefId, 211,717 ( 0.00%) pub index: u32, 394,263 ( 0.00%) pub name: Symbol, . } . . /// A **`const`** **v**ariable **ID**. . #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] . pub struct ConstVid<'tcx> { 6,547 ( 0.00%) pub index: u32, 1,930 ( 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, 16,880 ( 0.00%) pub kind: BoundTyKind, . } . 287,266 ( 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 { . BoundTy { var, kind: BoundTyKind::Anon } . } . } . . /// A `ProjectionPredicate` for an `ExistentialTraitRef`. . #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] 523 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub struct ExistentialProjection<'tcx> { 228 ( 0.00%) pub item_def_id: DefId, 540 ( 0.00%) pub substs: SubstsRef<'tcx>, 135 ( 0.00%) pub term: Term<'tcx>, . } . . pub type PolyExistentialProjection<'tcx> = Binder<'tcx, ExistentialProjection<'tcx>>; . . impl<'tcx> ExistentialProjection<'tcx> { . /// Extracts the underlying existential trait reference from this projection. . /// For example, if this is a projection of `exists T. ::Item == X`, . /// then this function would return an `exists T. T: Iterator` existential trait -- line 1551 ---------------------------------------- -- line 1585 ---------------------------------------- . item_def_id: projection_predicate.projection_ty.item_def_id, . substs: tcx.intern_substs(&projection_predicate.projection_ty.substs[1..]), . term: projection_predicate.term, . } . } . } . . impl<'tcx> PolyExistentialProjection<'tcx> { 30 ( 0.00%) pub fn with_self_ty( . &self, . tcx: TyCtxt<'tcx>, . self_ty: Ty<'tcx>, . ) -> ty::PolyProjectionPredicate<'tcx> { 30 ( 0.00%) self.map_bound(|p| p.with_self_ty(tcx, self_ty)) 36 ( 0.00%) } . . pub fn item_def_id(&self) -> DefId { 12 ( 0.00%) self.skip_binder().item_def_id 6 ( 0.00%) } . } . . /// Region utilities . impl RegionKind { . /// Is this region named by the user? . pub fn has_name(&self) -> bool { . match *self { . RegionKind::ReEarlyBound(ebr) => ebr.has_name(), -- line 1611 ---------------------------------------- -- line 1616 ---------------------------------------- . RegionKind::RePlaceholder(placeholder) => placeholder.name.is_named(), . RegionKind::ReEmpty(_) => false, . RegionKind::ReErased => false, . } . } . . #[inline] . pub fn is_late_bound(&self) -> bool { 32,964 ( 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 { 763,043 ( 0.00%) match *self { . ty::ReLateBound(debruijn, _) => debruijn >= index, . _ => false, . } . } . . pub fn type_flags(&self) -> TypeFlags { . let mut flags = TypeFlags::empty(); . 1,282,541 ( 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 106,918 ( 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 { 21,002 ( 0.00%) match self.kind() { 5,942 ( 0.00%) Tuple(ref tys) => tys.is_empty(), . _ => false, . } . } . . #[inline] . pub fn is_never(&self) -> bool { 206,338 ( 0.00%) 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 { 290,027 ( 0.00%) matches!(self.kind(), Infer(TyVar(_))) . } . . #[inline] . pub fn ty_vid(&self) -> Option { 216,820 ( 0.00%) match self.kind() { 36,615 ( 0.00%) &Infer(TyVar(vid)) => Some(vid), . _ => None, . } . } . . #[inline] . pub fn is_ty_infer(&self) -> bool { 741 ( 0.00%) matches!(self.kind(), Infer(_)) . } . . #[inline] . pub fn is_phantom_data(&self) -> bool { 2 ( 0.00%) if let Adt(def, _) = self.kind() { def.is_phantom_data() } else { false } . } . . #[inline] . pub fn is_bool(&self) -> bool { . *self.kind() == Bool . } . . /// Returns `true` if this type is a `str`. . #[inline] . pub fn is_str(&self) -> bool { . *self.kind() == Str . } . . #[inline] . pub fn is_param(&self, index: u32) -> bool { 323 ( 0.00%) match self.kind() { . ty::Param(ref data) => data.index == index, . _ => false, . } . } . . #[inline] . pub fn is_slice(&self) -> bool { . match self.kind() { . RawPtr(TypeAndMut { ty, .. }) | Ref(_, ty, _) => matches!(ty.kind(), Slice(_) | Str), . _ => false, . } . } . . #[inline] . pub fn is_array(&self) -> bool { 447 ( 0.00%) matches!(self.kind(), Array(..)) . } . . #[inline] . pub fn is_simd(&self) -> bool { 18 ( 0.00%) match self.kind() { 8 ( 0.00%) Adt(def, _) => def.repr.simd(), . _ => false, . } . } . 822 ( 0.00%) pub fn sequence_element_type(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> { 1,644 ( 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), . } 822 ( 0.00%) } . 35 ( 0.00%) pub fn simd_size_and_type(&self, tcx: TyCtxt<'tcx>) -> (u64, Ty<'tcx>) { 10 ( 0.00%) match self.kind() { . Adt(def, substs) => { 10 ( 0.00%) assert!(def.repr.simd(), "`simd_size_and_type` called on non-SIMD type"); . let variant = def.non_enum_variant(); 20 ( 0.00%) let f0_ty = variant.fields[0].ty(tcx, substs); . 10 ( 0.00%) match f0_ty.kind() { . // If the first field is an array, we assume it is the only field and its . // elements are the SIMD components. . Array(f0_elem_ty, f0_len) => { . // FIXME(repr_simd): https://github.com/rust-lang/rust/pull/78863#discussion_r522784112 . // The way we evaluate the `N` in `[T; N]` here only works since we use . // `simd_size_and_type` post-monomorphization. It will probably start to ICE . // if we use it in generic code. See the `simd-array-trait` ui test. . (f0_len.eval_usize(tcx, ParamEnv::empty()) as u64, f0_elem_ty) . } . // Otherwise, the fields of this Adt are the SIMD components (and we assume they . // all have the same type). 10 ( 0.00%) _ => (variant.fields.len() as u64, f0_ty), . } . } . _ => bug!("`simd_size_and_type` called on invalid type"), . } 45 ( 0.00%) } . . #[inline] . pub fn is_region_ptr(&self) -> bool { 80 ( 0.00%) matches!(self.kind(), Ref(..)) . } . . #[inline] . pub fn is_mutable_ptr(&self) -> bool { 21 ( 0.00%) matches!( 14 ( 0.00%) self.kind(), . RawPtr(TypeAndMut { mutbl: hir::Mutability::Mut, .. }) . | Ref(_, _, hir::Mutability::Mut) . ) . } . . /// Get the mutability of the reference or `None` when not a reference . #[inline] . pub fn ref_mutability(&self) -> Option { -- line 1860 ---------------------------------------- -- line 1861 ---------------------------------------- . match self.kind() { . Ref(_, _, mutability) => Some(*mutability), . _ => None, . } . } . . #[inline] . pub fn is_unsafe_ptr(&self) -> bool { 33,825 ( 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 { 78 ( 0.00%) self.is_region_ptr() || self.is_unsafe_ptr() || self.is_fn_ptr() . } . . #[inline] . pub fn is_box(&self) -> bool { 293,004 ( 0.00%) match self.kind() { 79,673 ( 0.00%) Adt(def, _) => def.is_box(), . _ => false, . } . } . . /// Panics if called on any type other than `Box`. 6,158 ( 0.00%) pub fn boxed_ty(&self) -> Ty<'tcx> { 6,158 ( 0.00%) match self.kind() { 15,395 ( 0.00%) Adt(def, substs) if def.is_box() => substs.type_at(0), . _ => bug!("`boxed_ty` is called on non-box type {:?}", self), . } 6,158 ( 0.00%) } . . /// 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 { 2,726 ( 0.00%) matches!( 6,659 ( 0.00%) self.kind(), . Bool | Char . | Int(_) . | Float(_) . | Uint(_) . | FnDef(..) . | FnPtr(_) . | RawPtr(_) . | Infer(IntVar(_) | FloatVar(_)) . ) . } . . /// Returns `true` if this type is a floating point type. . #[inline] . pub fn is_floating_point(&self) -> bool { 8,624 ( 0.00%) matches!(self.kind(), Float(_) | Infer(FloatVar(_))) . } . . #[inline] . pub fn is_trait(&self) -> bool { 3,351 ( 0.00%) matches!(self.kind(), Dynamic(..)) . } . . #[inline] . pub fn is_enum(&self) -> bool { 10,446 ( 0.00%) matches!(self.kind(), Adt(adt_def, _) if adt_def.is_enum()) . } . . #[inline] . pub fn is_union(&self) -> bool { 51,822 ( 0.00%) matches!(self.kind(), Adt(adt_def, _) if adt_def.is_union()) . } . . #[inline] . pub fn is_closure(&self) -> bool { 9,802 ( 0.00%) matches!(self.kind(), Closure(..)) . } . . #[inline] . pub fn is_generator(&self) -> bool { 19,747 ( 0.00%) matches!(self.kind(), Generator(..)) . } . . #[inline] . pub fn is_integral(&self) -> bool { 45,914 ( 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 { 11,723 ( 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 { 2,224 ( 0.00%) matches!(self.kind(), Int(_)) . } . . #[inline] . pub fn is_ptr_sized_integral(&self) -> bool { 2,631 ( 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. 66,845 ( 0.00%) pub fn builtin_deref(&self, explicit: bool) -> Option> { 432,242 ( 0.00%) match self.kind() { 5,568 ( 0.00%) Adt(def, _) if def.is_box() => { 5,614 ( 0.00%) Some(TypeAndMut { ty: self.boxed_ty(), mutbl: hir::Mutability::Not }) . } 243,778 ( 0.00%) Ref(_, ty, mutbl) => Some(TypeAndMut { ty, mutbl: *mutbl }), 15,616 ( 0.00%) RawPtr(mt) if explicit => Some(*mt), . _ => None, . } 133,690 ( 0.00%) } . . /// Returns the type of `ty[i]`. . pub fn builtin_index(&self) -> Option> { 3,269 ( 0.00%) match self.kind() { . Array(ty, _) | Slice(ty) => Some(ty), . _ => None, . } 263 ( 0.00%) } . 800,784 ( 0.00%) pub fn fn_sig(&self, tcx: TyCtxt<'tcx>) -> PolyFnSig<'tcx> { 400,392 ( 0.00%) match self.kind() { 300,033 ( 0.00%) FnDef(def_id, substs) => tcx.fn_sig(*def_id).subst(tcx, substs), 435 ( 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), . } 900,882 ( 0.00%) } . . #[inline] . pub fn is_fn(&self) -> bool { 56,667 ( 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> { 20,265 ( 0.00%) match self.kind() { . Adt(adt, _) => Some(adt), . _ => None, . } . } . . /// Iterates over tuple fields. . /// Panics when called on anything but a tuple. 2,821 ( 0.00%) pub fn tuple_fields(&self) -> impl DoubleEndedIterator> { 15,082 ( 0.00%) match self.kind() { 10,859 ( 0.00%) Tuple(substs) => substs.iter().map(|field| field.expect_ty()), . _ => bug!("tuple_fields called on non-tuple"), . } 5,642 ( 0.00%) } . . /// Get the `i`-th element of a tuple. . /// Panics when called on anything but a tuple. 185 ( 0.00%) pub fn tuple_element_ty(&self, i: usize) -> Option> { 370 ( 0.00%) match self.kind() { 370 ( 0.00%) Tuple(substs) => substs.iter().nth(i).map(|field| field.expect_ty()), . _ => bug!("tuple_fields called on non-tuple"), . } 370 ( 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] 94,860 ( 0.00%) pub fn discriminant_for_variant( . &self, . tcx: TyCtxt<'tcx>, . variant_index: VariantIdx, . ) -> Option> { 143,896 ( 0.00%) match self.kind() { 64,644 ( 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 . } 32,322 ( 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, . } 75,888 ( 0.00%) } . . /// Returns the type of the discriminant of this type. 89,860 ( 0.00%) pub fn discriminant_ty(&'tcx self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> { 44,930 ( 0.00%) match self.kind() { 71,888 ( 0.00%) 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) . } . } 71,888 ( 0.00%) } . . /// Returns the type of metadata for (potentially fat) pointers to this type. 918 ( 0.00%) pub fn ptr_metadata_ty( . &'tcx self, . tcx: TyCtxt<'tcx>, . normalize: impl FnMut(Ty<'tcx>) -> Ty<'tcx>, . ) -> Ty<'tcx> { 918 ( 0.00%) let tail = tcx.struct_tail_with_normalize(self, normalize); 510 ( 0.00%) match tail.kind() { . // Sized types . ty::Infer(ty::IntVar(_) | ty::FloatVar(_)) . | ty::Uint(_) . | ty::Int(_) . | ty::Bool . | ty::Float(_) . | ty::FnDef(..) . | ty::FnPtr(_) -- line 2160 ---------------------------------------- -- line 2170 ---------------------------------------- . | ty::Foreign(..) . // If returned by `struct_tail_without_normalization` this is a unit struct . // without any fields, or not a struct, and therefore is Sized. . | ty::Adt(..) . // If returned by `struct_tail_without_normalization` this is the empty tuple, . // a.k.a. unit type, which is Sized . | ty::Tuple(..) => tcx.types.unit, . 204 ( 0.00%) ty::Str | ty::Slice(_) => tcx.types.usize, . ty::Dynamic(..) => { . let dyn_metadata = tcx.lang_items().dyn_metadata().unwrap(); . tcx.type_of(dyn_metadata).subst(tcx, &[tail.into()]) . }, . . ty::Projection(_) . | ty::Param(_) . | ty::Opaque(..) . | ty::Infer(ty::TyVar(_)) . | ty::Bound(..) . | ty::Placeholder(..) . | ty::Infer(ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => { . bug!("`ptr_metadata_ty` applied to unexpected type: {:?}", tail) . } . } 816 ( 0.00%) } . . /// When we create a closure, we record its kind (i.e., what trait . /// it implements) into its `ClosureSubsts` using a type . /// parameter. This is kind of a phantom type, except that the . /// most convenient thing for us to are the integral types. This . /// 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. 9,638 ( 0.00%) pub fn to_opt_closure_kind(&self) -> Option { 19,276 ( 0.00%) match self.kind() { 19,212 ( 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), . } 9,638 ( 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`. 1,481,994 ( 0.00%) pub fn is_trivially_sized(&self, tcx: TyCtxt<'tcx>) -> bool { 987,996 ( 0.00%) 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, . 33,822 ( 0.00%) ty::Tuple(tys) => tys.iter().all(|ty| ty.expect_ty().is_trivially_sized(tcx)), . 195,264 ( 0.00%) 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) . } . } 1,481,994 ( 0.00%) } . } . . /// 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()` 6,765 ( 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. 363,030 ( 0.00%) pub fn xform(self, other: VarianceDiagInfo<'tcx>) -> VarianceDiagInfo<'tcx> { . // For now, just use the first `VarianceDiagInfo::Invariant` that we see 544,545 ( 0.00%) match self { . VarianceDiagInfo::None => other, . VarianceDiagInfo::Invariant { .. } => self, . } 181,515 ( 0.00%) } . } 100,658,054 ( 0.26%) -------------------------------------------------------------------------------- -- 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 { 13,147,257 ( 0.03%) 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)); 786,032 ( 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::()); 284,046,334 ( 0.73%) 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" . ); . 2,453,640 ( 0.01%) self.stride += Group::WIDTH; 2,453,640 ( 0.01%) self.pos += self.stride; 2,093,933 ( 0.01%) 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. 849,812 ( 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. 1,815,395 ( 0.00%) 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. 370,962 ( 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 { 2,355,929 ( 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. 539,589 ( 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 = 1,707,502 ( 0.00%) size.checked_mul(buckets)?.checked_add(ctrl_align - 1)? & !(ctrl_align - 1); 2,299,221 ( 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 { 8,526 ( 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 { 77,268 ( 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 { 545 ( 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 { 44,795 ( 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")] 173,516 ( 0.00%) pub unsafe fn erase_no_drop(&mut self, item: &Bucket) { 173,516 ( 0.00%) let index = self.bucket_index(item); . self.table.erase(index); 347,032 ( 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. 99,712 ( 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 { 247,320 ( 0.00%) self.erase_no_drop(&item); 1,583 ( 0.00%) item.read() . } . . /// Finds and removes an element from the table, returning it. . #[cfg_attr(feature = "inline-more", inline)] 4,299,878 ( 0.01%) pub fn remove_entry(&mut self, hash: u64, eq: impl FnMut(&T) -> bool) -> Option { . // Avoid `Option::map` because it bloats LLVM IR. 11,738 ( 0.00%) match self.find(hash, eq) { 69,106 ( 0.00%) Some(bucket) => Some(unsafe { self.remove(bucket) }), 908,644 ( 0.00%) None => None, . } 5,711,834 ( 0.01%) } . . /// 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) { 98,314 ( 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) { 2,268,256 ( 0.01%) if additional > self.table.growth_left { . // Avoid `Result::unwrap_or_else` because it bloats LLVM IR. 1,500,422 ( 0.00%) 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)] 3,403,278 ( 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 . }, . ) . } 2,466,176 ( 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)] 15,715,150 ( 0.04%) 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. 42,839 ( 0.00%) let old_ctrl = *self.table.ctrl(index); 12,766,337 ( 0.03%) 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 . } 11,600,480 ( 0.03%) } . . /// 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)] 6,282,480 ( 0.02%) pub fn insert_entry(&mut self, hash: u64, value: T, hasher: impl Fn(&T) -> u64) -> &mut T { 1,196 ( 0.00%) unsafe { self.insert(hash, value, hasher).as_mut() } 4,711,860 ( 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"))] 27,711 ( 0.00%) pub unsafe fn insert_no_grow(&mut self, hash: u64, value: T) -> Bucket { 2,122,567 ( 0.01%) let (index, old_ctrl) = self.table.prepare_insert_slot(hash); 101,794 ( 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. 4,499,166 ( 0.01%) self.table.growth_left -= special_is_empty(old_ctrl) as usize; . . bucket.write(value); 3,579,566 ( 0.01%) self.table.items += 1; . bucket 55,413 ( 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] 457,288 ( 0.00%) pub fn find(&self, hash: u64, mut eq: impl FnMut(&T) -> bool) -> Option> { 70,458 ( 0.00%) let result = self.table.find_inner(hash, &mut |index| unsafe { 157,530 ( 0.00%) eq(self.bucket(index).as_ref()) 25,614 ( 0.00%) }); . . // Avoid `Option::map` because it bloats LLVM IR. . match result { 7,307 ( 0.00%) Some(index) => Some(unsafe { self.bucket(index) }), . None => None, . } 516,520 ( 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. 231,756 ( 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] 71,155 ( 0.00%) pub fn get_mut(&mut self, hash: u64, eq: impl FnMut(&T) -> bool) -> Option<&mut T> { . // Avoid `Option::map` because it bloats LLVM IR. 236,343 ( 0.00%) match self.find(hash, eq) { . Some(bucket) => Some(unsafe { bucket.as_mut() }), . None => None, . } 81,320 ( 0.00%) } . . /// 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. . /// . /// At most one mutable reference will be returned to any entry. `None` will be returned if any . /// of the hashes are duplicates. `None` will be returned if the hash is not found. . /// -- line 859 ---------------------------------------- -- 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 { 6,478,043 ( 0.02%) 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 { 100 ( 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()), 710,577 ( 0.00%) 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(); 51,500 ( 0.00%) let allocation = self.into_allocation(); 38,625 ( 0.00%) RawIntoIter { 64,375 ( 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)> { 22,493 ( 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(( 5,909 ( 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 { 4,713,774 ( 0.01%) 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)] 3,039,367 ( 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()); . } . 720,186 ( 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)); 1,670,754 ( 0.00%) Ok(Self { . ctrl, 703,474 ( 0.00%) bucket_mask: buckets - 1, . items: 0, . growth_left: bucket_mask_to_capacity(buckets - 1), . alloc, . }) 2,211,884 ( 0.01%) } . . #[inline] 164,957 ( 0.00%) fn fallible_with_capacity( . alloc: A, . table_layout: TableLayout, . capacity: usize, . fallibility: Fallibility, . ) -> Result { 43,010 ( 0.00%) if capacity == 0 { 21,318 ( 0.00%) Ok(Self::new_in(alloc)) . } else { . unsafe { . let buckets = . capacity_to_buckets(capacity).ok_or_else(|| fallibility.capacity_overflow())?; . 1,377,746 ( 0.00%) let result = Self::new_uninitialized(alloc, table_layout, buckets, fallibility)?; . result.ctrl(0).write_bytes(EMPTY, result.num_ctrl_bytes()); . 100,622 ( 0.00%) Ok(result) . } . } 164,957 ( 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] 758,329 ( 0.00%) unsafe fn prepare_insert_slot(&self, hash: u64) -> (usize, u8) { . let index = self.find_insert_slot(hash); 758,329 ( 0.00%) let old_ctrl = *self.ctrl(index); . self.set_ctrl_h2(index, hash); . (index, old_ctrl) 1,516,658 ( 0.00%) } . . /// 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)); 8,550,046 ( 0.02%) if let Some(bit) = group.match_empty_or_deleted().lowest_set_bit() { 24,723,919 ( 0.06%) 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). 11,428,466 ( 0.03%) 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); . 914,872 ( 0.00%) loop { . let group = unsafe { Group::load(self.ctrl(probe_seq.pos)) }; . 29,461,537 ( 0.08%) for bit in group.match_byte(h2_hash) { 59,565,341 ( 0.15%) let index = (probe_seq.pos + bit) & self.bucket_mask; . 39,128,785 ( 0.10%) if likely(eq(index)) { . return Some(index); . } . } . 8,217,894 ( 0.02%) 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. 12 ( 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. 12 ( 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(); 31,986,296 ( 0.08%) 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 { 159,948,411 ( 0.41%) 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) { 15,983,059 ( 0.04%) self.growth_left -= special_is_empty(old_ctrl) as usize; . self.set_ctrl_h2(index, hash); 12,761,576 ( 0.03%) 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; 87 ( 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] | . // --------------------------------------------- 23,944,539 ( 0.06%) let index2 = ((index.wrapping_sub(Group::WIDTH)) & self.bucket_mask) + Group::WIDTH; . 7,974,713 ( 0.02%) *self.ctrl(index) = ctrl; 7,975,792 ( 0.02%) *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 { 2,120,296 ( 0.01%) self.bucket_mask + 1 . } . . #[inline] . fn num_ctrl_bytes(&self) -> usize { 2,001,589 ( 0.01%) self.bucket_mask + 1 + Group::WIDTH . } . . #[inline] . fn is_empty_singleton(&self) -> bool { 8,706,772 ( 0.02%) 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. 29,148 ( 0.00%) let mut new_table = RawTableInner::fallible_with_capacity( . self.alloc.clone(), . table_layout, . capacity, . fallibility, . )?; 935,757 ( 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_| { 417,846 ( 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. 835,701 ( 0.00%) let new_items = match self.items.checked_add(additional) { . Some(new_items) => new_items, . None => return Err(fallibility.capacity_overflow()), . }; 835,700 ( 0.00%) let full_capacity = bucket_mask_to_capacity(self.bucket_mask); 1,776,161 ( 0.00%) 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); 8 ( 0.00%) Ok(()) . } else { . // Otherwise, conservatively resize to at least the next size up . // to avoid churning deletes into frequent rehashes. . self.resize_inner( 417,846 ( 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> { 72,877 ( 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() { 4,909,185 ( 0.01%) 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); . 417,846 ( 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() { 256 ( 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. 29 ( 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; . } . } . } . 12 ( 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( 289,501 ( 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) { 120,140 ( 0.00%) if !self.is_empty_singleton() { . unsafe { . self.ctrl(0).write_bytes(EMPTY, self.num_ctrl_bytes()); . } . } 142,504 ( 0.00%) self.items = 0; 120,607 ( 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))); 641,451 ( 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. 2,565,804 ( 0.01%) let ctrl = if empty_before.leading_zeros() + empty_after.trailing_zeros() >= Group::WIDTH { . DELETED . } else { 3,061,995 ( 0.01%) self.growth_left += 1; . EMPTY . }; . self.set_ctrl(index, ctrl); 2,565,804 ( 0.01%) self.items -= 1; . } . } . . impl Clone for RawTable { 206,064 ( 0.00%) fn clone(&self) -> Self { 25,979 ( 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) . } . } 231,822 ( 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; 218 ( 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)] 4,166,256 ( 0.01%) fn drop(&mut self) { 3,697,140 ( 0.01%) if !self.table.is_empty_singleton() { . unsafe { . self.drop_elements(); . self.free_buckets(); . } . } 4,427,174 ( 0.01%) } . } . #[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)] 51,500 ( 0.00%) fn into_iter(self) -> RawIntoIter { . unsafe { . let iter = self.iter(); . self.into_iter_from(iter) . } 64,375 ( 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 { 2,365,227 ( 0.01%) if let Some(index) = self.current_group.lowest_set_bit() { 300,798 ( 0.00%) self.current_group = self.current_group.remove_lowest_bit(); 502,567 ( 0.00%) return Some(self.data.next_n(index)); . } . 2,707,493 ( 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). 40,808 ( 0.00%) self.current_group = Group::load_aligned(self.next_ctrl).match_full(); 49,291 ( 0.00%) self.data = self.data.next_n(Group::WIDTH); 62,965 ( 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) { 15,764 ( 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)] 324,624 ( 0.00%) fn next(&mut self) -> Option> { 768,954 ( 0.00%) if let Some(b) = self.iter.next() { 14,182,890 ( 0.04%) 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 . } 649,248 ( 0.00%) } . . #[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)] 19,560 ( 0.00%) fn drop(&mut self) { . unsafe { . // Drop all remaining elements . self.iter.drop_elements(); . . // Free the table 106,924 ( 0.00%) if let Some((ptr, layout)) = self.allocation { . self.alloc.deallocate(ptr, layout); . } . } 374 ( 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)] 17,622 ( 0.00%) fn next(&mut self) -> Option { 4,131 ( 0.00%) unsafe { Some(self.iter.next()?.read()) } 45,621 ( 0.00%) } . . #[inline] . fn size_hint(&self) -> (usize, Option) { 4 ( 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)] 22,288 ( 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. 2,786 ( 0.00%) self.orig_table . .as_ptr() . .copy_from_nonoverlapping(&*self.table, 1); . } 22,288 ( 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 ---------------------------------------- 123,700,856 ( 0.32%) -------------------------------------------------------------------------------- -- 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 { 1,768 ( 0.00%) fn clone(&self) -> Self { 126,662 ( 0.00%) HashMap { . hash_builder: self.hash_builder.clone(), 25,757 ( 0.00%) table: self.table.clone(), . } 1,989 ( 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, . { 793,068 ( 0.00%) 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, . { 2,537,714 ( 0.01%) 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, . { 3,273,458 ( 0.01%) 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)] 2 ( 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) 4 ( 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 { 1,285,876 ( 0.00%) 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 { 1,378 ( 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 527 ---------------------------------------- . /// map.insert("c", 3); . /// . /// for key in map.keys() { . /// println!("{}", key); . /// } . /// ``` . #[cfg_attr(feature = "inline-more", inline)] . pub fn keys(&self) -> Keys<'_, K, V> { 6 ( 0.00%) Keys { inner: self.iter() } . } . . /// An iterator visiting all values in arbitrary order. . /// The iterator element type is `&'a V`. . /// . /// # Examples . /// . /// ``` -- line 543 ---------------------------------------- -- 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 { 97,818 ( 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 { 486,551 ( 0.00%) 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)] 6,284 ( 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)) { 4,510 ( 0.00%) Entry::Occupied(OccupiedEntry { . hash, . key: Some(key), . elem, . table: self, . }) . } else { 3,345 ( 0.00%) Entry::Vacant(VacantEntry { . hash, . key, . table: self, . }) . } 7,855 ( 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. 5,369,739 ( 0.01%) 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, . { 6,412,536 ( 0.02%) if self.table.is_empty() { . None . } else { 1 ( 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)] 2,193,209 ( 0.01%) pub fn contains_key(&self, k: &Q) -> bool . where . K: Borrow, . Q: Hash + Eq, . { . self.get_inner(k).is_some() 2,764,330 ( 0.01%) } . . /// 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)] 1,124 ( 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. 33,867 ( 0.00%) match self.get_inner_mut(k) { . Some(&mut (_, ref mut v)) => Some(v), . None => None, . } 2,248 ( 0.00%) } . . #[inline] . fn get_inner_mut(&mut self, k: &Q) -> Option<&mut (K, V)> . where . K: Borrow, . Q: Hash + Eq, . { 11,289 ( 0.00%) if self.table.is_empty() { . None . } else { . let hash = make_hash::(&self.hash_builder, k); 20,330 ( 0.00%) self.table.get_mut(hash, equivalent_key(k)) . } . } . . /// Attempts to get mutable references to `N` values in the map at once. . /// . /// Returns an array of length `N` with the results of each query. For soundness, at most one . /// mutable reference will be returned to any value. `None` will be returned if any of the . /// keys are duplicates or missing. -- line 1223 ---------------------------------------- -- 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)] 18,180,283 ( 0.05%) pub fn insert(&mut self, k: K, v: V) -> Option { . let hash = make_insert_hash::(&self.hash_builder, &k); 51,872 ( 0.00%) if let Some((_, item)) = self.table.get_mut(hash, equivalent_key(&k)) { 6 ( 0.00%) Some(mem::replace(item, v)) . } else { 7,534,580 ( 0.02%) self.table 7,663,688 ( 0.02%) .insert(hash, (k, v), make_hasher::(&self.hash_builder)); 833,475 ( 0.00%) None . } 16,723,990 ( 0.04%) } . . /// 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)] 466,667 ( 0.00%) pub fn remove(&mut self, k: &Q) -> Option . where . K: Borrow, . Q: Hash + Eq, . { . // Avoid `Option::map` because it bloats LLVM IR. 3,342,680 ( 0.01%) match self.remove_entry(k) { 250,504 ( 0.00%) Some((_, v)) => Some(v), 377,832 ( 0.00%) None => None, . } 1,078,246 ( 0.00%) } . . /// 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); 1,330,007 ( 0.00%) 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, . { 18,555,872 ( 0.05%) 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)] 46,715,302 ( 0.12%) 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) 50,695,137 ( 0.13%) } . . #[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, . { 5,744,110 ( 0.01%) match self.map.table.find(hash, |(k, _)| is_match(k)) { 29,490,513 ( 0.08%) Some(elem) => RawEntryMut::Occupied(RawOccupiedEntryMut { . elem, . table: &mut self.map.table, . hash_builder: &self.map.hash_builder, . }), 2,690,341 ( 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)] 10,114,619 ( 0.03%) pub fn from_key_hashed_nocheck(self, hash: u64, k: &Q) -> Option<(&'a K, &'a V)> . where . K: Borrow, . Q: Eq, . { 10,656,680 ( 0.03%) self.from_hash(hash, equivalent(k)) 18,060,181 ( 0.05%) } . . #[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, . { 14,739,500 ( 0.04%) 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, . { 4,420,585 ( 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)] 9,618 ( 0.00%) fn into_iter(self) -> IntoIter { 198,117 ( 0.00%) IntoIter { 109,918 ( 0.00%) inner: self.table.into_iter(), . } 28,854 ( 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. 1,039,275 ( 0.00%) match self.inner.next() { . Some(x) => unsafe { . let r = x.as_ref(); 8,960 ( 0.00%) Some((&r.0, &r.1)) . }, . None => None, . } . } . #[cfg_attr(feature = "inline-more", inline)] . fn size_hint(&self) -> (usize, Option) { 1,957 ( 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)> { 45,617 ( 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)] 593 ( 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, . } 1,186 ( 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 3819 ---------------------------------------- . /// ``` . #[cfg_attr(feature = "inline-more", inline)] . pub fn insert(self, value: V) -> &'a mut V . where . K: Hash, . S: BuildHasher, . { . let table = &mut self.table.table; 221 ( 0.00%) let entry = table.insert_entry( . self.hash, . (self.key, value), . make_hasher::(&self.table.hash_builder), . ); . &mut entry.1 . } . . #[cfg_attr(feature = "inline-more", inline)] -- line 3835 ---------------------------------------- -- 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)] 197,631 ( 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. 157,902 ( 0.00%) let iter = iter.into_iter(); 149,147 ( 0.00%) let reserve = if self.is_empty() { . iter.size_hint().0 . } else { 9,555 ( 0.00%) (iter.size_hint().0 + 1) / 2 . }; . self.reserve(reserve); . iter.for_each(move |(k, v)| { 575,948 ( 0.00%) self.insert(k, v); . }); 132,747 ( 0.00%) } . . #[inline] . #[cfg(feature = "nightly")] . fn extend_one(&mut self, (k, v): (K, V)) { . self.insert(k, v); . } . . #[inline] -- line 4588 ---------------------------------------- 35,577,413 ( 0.09%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/smallvec-1.7.0/src/lib.rs -------------------------------------------------------------------------------- Ir -- line 293 ---------------------------------------- . . #[allow(deprecated)] . impl From for CollectionAllocErr { . fn from(_: LayoutErr) -> Self { . CollectionAllocErr::CapacityOverflow . } . } . 315 ( 0.00%) fn infallible(result: Result) -> T { 5,443,316 ( 0.01%) match result { . Ok(x) => x, . Err(CollectionAllocErr::CapacityOverflow) => panic!("capacity overflow"), . Err(CollectionAllocErr::AllocErr { layout }) => alloc::alloc::handle_alloc_error(layout), . } 630 ( 0.00%) } . . /// FIXME: use `Layout::array` when we require a Rust version where it’s stable . /// https://github.com/rust-lang/rust/issues/55724 . fn layout_array(n: usize) -> Result { . let size = mem::size_of::() . .checked_mul(n) . .ok_or(CollectionAllocErr::CapacityOverflow)?; . let align = mem::align_of::(); -- line 315 ---------------------------------------- -- 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 { 471,430 ( 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) { 124,295 ( 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::() . ); 3,542,371 ( 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 597 ---------------------------------------- . /// . /// let vec = vec![1, 2, 3, 4, 5]; . /// let small_vec: SmallVec<[_; 3]> = SmallVec::from_vec(vec); . /// . /// assert_eq!(&*small_vec, &[1, 2, 3, 4, 5]); . /// ``` . #[inline] . pub fn from_vec(mut vec: Vec) -> SmallVec { 17,030 ( 0.00%) if vec.capacity() <= Self::inline_capacity() { . unsafe { . let mut data = SmallVecData::::from_inline(MaybeUninit::uninit()); . let len = vec.len(); . vec.set_len(0); . ptr::copy_nonoverlapping(vec.as_ptr(), data.inline_mut(), len); . . SmallVec { . capacity: len, . data, . } . } . } else { . let (ptr, cap, len) = (vec.as_mut_ptr(), vec.capacity(), vec.len()); . mem::forget(vec); . 26,118 ( 0.00%) SmallVec { . capacity: cap, . data: SmallVecData::from_heap(ptr, len), . } . } . } . . /// Constructs a new `SmallVec` on the stack from an `A` without . /// copying elements. -- line 629 ---------------------------------------- -- 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(), 50,274 ( 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 { 164,476 ( 0.00%) assert!(len <= A::size()); 493,428 ( 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 { 82,238 ( 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(); 1,635,308 ( 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 { 400 ( 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 { 1,352,158 ( 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 { 49,020,331 ( 0.13%) 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 { 51,944,389 ( 0.13%) if self.spilled() { 206,361 ( 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 { 65,109,555 ( 0.17%) 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] 592,175 ( 0.00%) pub fn push(&mut self, value: A::Item) { . unsafe { . let (mut ptr, mut len, cap) = self.triple_mut(); 5,790,426 ( 0.01%) if *len == cap { 3,591 ( 0.00%) self.reserve(1); 58,478 ( 0.00%) let &mut (heap_ptr, ref mut heap_len) = self.data.heap_mut(); . ptr = heap_ptr; . len = heap_len; . } 51,128 ( 0.00%) ptr::write(ptr.add(*len), value); 10,962,689 ( 0.03%) *len += 1; . } 473,740 ( 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(); 2,520,437 ( 0.01%) if *len_ptr == 0 { . return None; . } 640,916 ( 0.00%) let last_index = *len_ptr - 1; 652,277 ( 0.00%) *len_ptr = last_index; 501,642 ( 0.00%) Some(ptr::read(ptr.add(last_index))) . } 699 ( 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 19,930 ( 0.00%) pub fn try_grow(&mut self, new_cap: usize) -> Result<(), CollectionAllocErr> { . unsafe { 1,526 ( 0.00%) let (ptr, &mut len, cap) = self.triple_mut(); . let unspilled = !self.spilled(); 104,534 ( 0.00%) assert!(new_cap >= len); 104,534 ( 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); 104,534 ( 0.00%) } else if new_cap != cap { 96,366 ( 0.00%) let layout = layout_array::(new_cap)?; . debug_assert!(layout.size() > 0); . let new_alloc; 52,267 ( 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`. 18,156 ( 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(); . } 104,534 ( 0.00%) self.data = SmallVecData::from_heap(new_alloc, len); 142,371 ( 0.00%) self.capacity = new_cap; . } . Ok(()) . } 21,456 ( 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] 1,159,162 ( 0.00%) pub fn reserve(&mut self, additional: usize) { 6,477,935 ( 0.02%) infallible(self.try_reserve(additional)) 1,304,416 ( 0.00%) } . . /// Reserve capacity for `additional` more elements to be inserted. . /// . /// May reserve more space to avoid frequent reallocations. 20,437,859 ( 0.05%) 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() 48,585 ( 0.00%) let (_, &mut len, cap) = self.triple_mut(); 16,892,415 ( 0.04%) 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)?; 4,039 ( 0.00%) self.try_grow(new_cap) 24,484,023 ( 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(); 646,460 ( 0.00%) if cap - len >= additional { . return Ok(()); . } . let new_cap = len . .checked_add(additional) . .ok_or(CollectionAllocErr::CapacityOverflow)?; 649 ( 0.00%) self.try_grow(new_cap) 649 ( 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(); 278,732 ( 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. 3,056 ( 0.00%) pub fn remove(&mut self, index: usize) -> A::Item { . unsafe { . let (mut ptr, len_ptr, _) = self.triple_mut(); 42,828 ( 0.00%) let len = *len_ptr; 146,409 ( 0.00%) assert!(index < len); 174,967 ( 0.00%) *len_ptr = len - 1; . ptr = ptr.add(index); . let item = ptr::read(ptr); 97,606 ( 0.00%) ptr::copy(ptr.add(1), ptr, len - index - 1); . item . } 3,820 ( 0.00%) } . . /// Insert an element at position `index`, shifting all elements after it to the right. . /// . /// Panics if `index` is out of bounds. 661,571 ( 0.00%) pub fn insert(&mut self, index: usize, element: A::Item) { . self.reserve(1); . . unsafe { . let (mut ptr, len_ptr, _) = self.triple_mut(); 61,673 ( 0.00%) let len = *len_ptr; 121,816 ( 0.00%) assert!(index <= len); 243,632 ( 0.00%) *len_ptr = len + 1; . ptr = ptr.add(index); 121,816 ( 0.00%) ptr::copy(ptr, ptr.add(1), len - index); . ptr::write(ptr, element); . } 421,002 ( 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. 669,015 ( 0.00%) pub fn retain bool>(&mut self, mut f: F) { . let mut del = 0; . let len = self.len(); . for i in 0..len { 405,796 ( 0.00%) if !f(&mut self[i]) { 970 ( 0.00%) del += 1; 120,998 ( 0.00%) } else if del > 0 { 276 ( 0.00%) self.swap(i - del, i); . } . } 148,670 ( 0.00%) self.truncate(len - del); 594,680 ( 0.00%) } . . /// Removes consecutive duplicate elements. 56 ( 0.00%) pub fn dedup(&mut self) . where . A::Item: PartialEq, . { . self.dedup_by(|a, b| a == b); 64 ( 0.00%) } . . /// Removes consecutive duplicate elements using the given equality relation. . pub fn dedup_by(&mut self, mut same_bucket: F) . where . F: FnMut(&mut A::Item, &mut A::Item) -> bool, . { . // See the implementation of Vec::dedup_by in the . // standard library for an explanation of this algorithm. . let len = self.len(); 16 ( 0.00%) if len <= 1 { . return; . } . . let ptr = self.as_mut_ptr(); . let mut w: usize = 1; . . unsafe { . for r in 1..len { -- line 1246 ---------------------------------------- -- 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, . ); 4,002 ( 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`. 12,494,651 ( 0.03%) pub fn insert_from_slice(&mut self, index: usize, slice: &[A::Item]) { . self.reserve(slice.len()); . . let len = self.len(); 3,271,680 ( 0.01%) 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()); 2,181,120 ( 0.01%) self.set_len(len + slice.len()); . } 8,724,480 ( 0.02%) } . . /// 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(); 2,341,097 ( 0.01%) 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 1489 ---------------------------------------- . /// Creates a `SmallVec` with `n` copies of `elem`. . /// ``` . /// use smallvec::SmallVec; . /// . /// let v = SmallVec::<[char; 128]>::from_elem('d', 2); . /// assert_eq!(v, SmallVec::from_buf(['d', 'd'])); . /// ``` . pub fn from_elem(elem: A::Item, n: usize) -> Self { 44,394 ( 0.00%) if n > Self::inline_capacity() { . vec![elem; n].into() . } else { . let mut v = SmallVec::::new(); . unsafe { . let (ptr, len_ptr, _) = v.triple_mut(); . let mut local_len = SetLenOnDrop::new(len_ptr); . . for i in 0..n { . ::core::ptr::write(ptr.add(i), elem.clone()); . local_len.increment_len(1); . } . } 66,018 ( 0.00%) v . } . } . } . . impl ops::Deref for SmallVec { . type Target = [A::Item]; . #[inline] . fn deref(&self) -> &[A::Item] { -- line 1518 ---------------------------------------- -- line 1522 ---------------------------------------- . } . } . } . . impl ops::DerefMut for SmallVec { . #[inline] . fn deref_mut(&mut self) -> &mut [A::Item] { . unsafe { 398,033 ( 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(); 6,174,546 ( 0.02%) v.extend(iterable); . v . } . } . . impl Extend for SmallVec { 20,856,362 ( 0.05%) fn extend>(&mut self, iterable: I) { 1,188,385 ( 0.00%) let mut iter = iterable.into_iter(); . let (lower_size_bound, _) = iter.size_hint(); 235,063 ( 0.00%) self.reserve(lower_size_bound); . . unsafe { . let (ptr, len_ptr, cap) = self.triple_mut(); . let mut len = SetLenOnDrop::new(len_ptr); 14,609,668 ( 0.04%) while len.get() < cap { 1,364,496 ( 0.00%) if let Some(out) = iter.next() { 2,954 ( 0.00%) ptr::write(ptr.add(len.get()), out); . len.increment_len(1); . } else { . return; . } . } . } . 932,982 ( 0.00%) for elem in iter { 282,173 ( 0.00%) self.push(elem); . } 17,521,047 ( 0.04%) } . } . . 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 { 6,310,912 ( 0.02%) fn drop(&mut self) { . unsafe { 10,564,688 ( 0.03%) if self.spilled() { . let (ptr, len) = self.data.heap(); . Vec::from_raw_parts(ptr, len, self.capacity); . } else { . ptr::drop_in_place(&mut self[..]); . } . } 6,765,510 ( 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 { 6,782 ( 0.00%) fn drop(&mut self) { 546,163 ( 0.00%) for _ in self {} 6,512 ( 0.00%) } . } . . impl Iterator for IntoIter { . type Item = A::Item; . . #[inline] . fn next(&mut self) -> Option { 3,869,857 ( 0.01%) if self.current == self.end { 243 ( 0.00%) None . } else { . unsafe { . let current = self.current; 2,066,569 ( 0.01%) self.current += 1; 63,264 ( 0.00%) Some(ptr::read(self.data.as_ptr().add(current))) . } . } . } . . #[inline] . fn size_hint(&self) -> (usize, Option) { 81,291 ( 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); 196,010 ( 0.00%) IntoIter { 1,858,099 ( 0.00%) 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 { 2,257,469 ( 0.01%) local_len: *len, . len, . } . } . . #[inline] . fn get(&self) -> usize { . self.local_len . } . . #[inline] . fn increment_len(&mut self, increment: usize) { 2,826,076 ( 0.01%) self.local_len += increment; . } . } . . impl<'a> Drop for SetLenOnDrop<'a> { . #[inline] . fn drop(&mut self) { 2,360,932 ( 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 ---------------------------------------- 33,523,591 ( 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. 2,361 ( 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. 2,361 ( 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 }, . } 4,722 ( 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> { 353,570 ( 0.00%) fn new() -> InferCtxtInner<'tcx> { 2,404,276 ( 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(), 212,142 ( 0.00%) region_constraint_storage: Some(RegionConstraintStorage::new()), . region_obligations: vec![], . opaque_types: Default::default(), . opaque_types_vars: Default::default(), . } 424,284 ( 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> { 24,217 ( 0.00%) self.projection_cache.with_log(&mut self.undo_log) . } . . #[inline] . fn type_variables(&mut self) -> type_variable::TypeVariableTable<'_, 'tcx> { 37,102,773 ( 0.09%) 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>, . >, . > { 83,238 ( 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>, . >, . > { 14,119 ( 0.00%) self.const_unification_storage.with_log(&mut self.undo_log) . } . . #[inline] . pub fn unwrap_region_constraints(&mut self) -> RegionConstraintCollector<'_, 'tcx> { 536,413 ( 0.00%) self.region_constraint_storage . .as_mut() . .expect("region constraints already solved") 687,869 ( 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. 1,153,608 ( 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 899,288 ( 0.00%) #[derive(Clone, Debug)] . pub enum SubregionOrigin<'tcx> { . /// Arose from a subtyping relation 46,475 ( 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. 11,995 ( 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 11,866 ( 0.00%) DataBorrowed(Ty<'tcx>, Span), . . /// (&'a &'b T) where a >= b 9,086 ( 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> { 70,714 ( 0.00%) fn infer_ctxt(self) -> InferCtxtBuilder<'tcx> { 212,142 ( 0.00%) InferCtxtBuilder { tcx: self, defining_use_anchor: None, fresh_typeck_results: None } 70,714 ( 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. 54,270 ( 0.00%) pub fn with_fresh_in_progress_typeck_results(mut self, table_owner: LocalDefId) -> Self { 66,330 ( 0.00%) self.fresh_typeck_results = Some(RefCell::new(ty::TypeckResults::new(table_owner))); 30,150 ( 0.00%) self.with_opaque_type_inference(table_owner) 42,210 ( 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. 5,218 ( 0.00%) pub fn with_opaque_type_inference(mut self, defining_use_anchor: LocalDefId) -> Self { 2,609 ( 0.00%) self.defining_use_anchor = Some(defining_use_anchor); 17,278 ( 0.00%) self 7,827 ( 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`). 109,039 ( 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| { 132,830 ( 0.00%) let (value, subst) = 7,078 ( 0.00%) infcx.instantiate_canonical_with_fresh_inference_vars(span, canonical); 199,808 ( 0.00%) f(infcx, value, subst) . }) 118,730 ( 0.00%) } . 420,197 ( 0.00%) pub fn enter(&mut self, f: impl for<'a> FnOnce(InferCtxt<'a, 'tcx>) -> R) -> R { 199,283 ( 0.00%) let InferCtxtBuilder { tcx, defining_use_anchor, ref fresh_typeck_results } = *self; . let in_progress_typeck_results = fresh_typeck_results.as_ref(); 3,026,871 ( 0.01%) f(InferCtxt { . tcx, . defining_use_anchor, . in_progress_typeck_results, 70,714 ( 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), 70,714 ( 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), . }) 452,858 ( 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 { 2,572 ( 0.00%) let InferOk { value, obligations } = self; 9,264 ( 0.00%) for obligation in obligations { 273 ( 0.00%) fulfill_cx.register_predicate_obligation(infcx, obligation); . } . value . } . } . . impl<'tcx> InferOk<'tcx, ()> { 88,802 ( 0.00%) pub fn into_obligations(self) -> PredicateObligations<'tcx> { 355,208 ( 0.00%) self.obligations 88,802 ( 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() 135,965 ( 0.00%) } . 1,023,352 ( 0.00%) pub fn freshen>(&self, t: T) -> T { 1,151,271 ( 0.00%) t.fold_with(&mut self.freshener()) 1,151,271 ( 0.00%) } . . /// 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`. 884 ( 0.00%) pub fn type_var_origin(&'a self, ty: Ty<'tcx>) -> Option { 1,768 ( 0.00%) match *ty.kind() { 417 ( 0.00%) ty::Infer(ty::TyVar(vid)) => { 1,668 ( 0.00%) Some(*self.inner.borrow_mut().type_variables().var_origin(vid)) . } 25 ( 0.00%) _ => None, . } 1,768 ( 0.00%) } . 127,919 ( 0.00%) pub fn freshener<'b>(&'b self) -> TypeFreshener<'b, 'tcx> { . freshen::TypeFreshener::new(self, false) 127,919 ( 0.00%) } . . /// Like `freshener`, but does not replace `'static` regions. 429,650 ( 0.00%) pub fn freshener_keep_static<'b>(&'b self) -> TypeFreshener<'b, 'tcx> { . freshen::TypeFreshener::new(self, true) 429,650 ( 0.00%) } . 10,328 ( 0.00%) pub fn unsolved_variables(&self) -> Vec> { 5,164 ( 0.00%) let mut inner = self.inner.borrow_mut(); 5,164 ( 0.00%) let mut vars: Vec> = inner . .type_variables() . .unsolved_variables() . .into_iter() 833 ( 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 }) 1,228 ( 0.00%) .filter(|&vid| inner.int_unification_table().probe_value(vid).is_none()) 25 ( 0.00%) .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 18,074 ( 0.00%) } . 221,281 ( 0.00%) fn combine_fields( . &'a self, . trace: TypeTrace<'tcx>, . param_env: ty::ParamEnv<'tcx>, . ) -> CombineFields<'a, 'tcx> { 900,324 ( 0.00%) CombineFields { . infcx: self, 2,250,810 ( 0.01%) trace, . cause: None, . param_env, . obligations: PredicateObligations::new(), . } 221,281 ( 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 755 ---------------------------------------- . /// better than grovelling through megabytes of `RUSTC_LOG` output. . /// . /// HOWEVER, in some cases the flag is unhelpful. In particular, we . /// sometimes create a "mini-fulfilment-cx" in which we enroll . /// obligations. As long as this fulfillment cx is fully drained . /// 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. 128 ( 0.00%) pub fn save_and_restore_in_snapshot_flag(&self, func: F) -> R . where . F: FnOnce(&Self) -> R, . { . let flag = self.in_snapshot.replace(false); 59,202 ( 0.00%) let result = func(self); . self.in_snapshot.set(flag); . result 144 ( 0.00%) } . 1,111,678 ( 0.00%) 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(); . 3,335,034 ( 0.01%) 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. 555,839 ( 0.00%) _in_progress_typeck_results: self . .in_progress_typeck_results . .map(|typeck_results| typeck_results.borrow()), . } 2,223,356 ( 0.01%) } . 1,458,281 ( 0.00%) #[instrument(skip(self, snapshot), level = "debug")] . fn rollback_to(&self, cause: &str, snapshot: CombinedSnapshot<'a, 'tcx>) { . let CombinedSnapshot { 132,571 ( 0.00%) undo_snapshot, 132,571 ( 0.00%) region_constraints_snapshot, 132,571 ( 0.00%) universe, 132,571 ( 0.00%) was_in_snapshot, 265,142 ( 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(); 132,571 ( 0.00%) inner.rollback_to(undo_snapshot); . inner.unwrap_region_constraints().rollback_to(region_constraints_snapshot); . } . 6,349,020 ( 0.02%) #[instrument(skip(self, snapshot), level = "debug")] . fn commit_from(&self, snapshot: CombinedSnapshot<'a, 'tcx>) { . let CombinedSnapshot { 423,268 ( 0.00%) undo_snapshot, . region_constraints_snapshot: _, . universe: _, 423,268 ( 0.00%) was_in_snapshot, 846,536 ( 0.00%) _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. 319,249 ( 0.00%) #[instrument(skip(self, f), level = "debug")] 396,803 ( 0.00%) pub fn commit_unconditionally(&self, f: F) -> R . where . F: FnOnce(&CombinedSnapshot<'a, 'tcx>) -> R, . { 36,073 ( 0.00%) let snapshot = self.start_snapshot(); 135,238 ( 0.00%) let r = f(&snapshot); 252,511 ( 0.00%) self.commit_from(snapshot); 211,126 ( 0.00%) r . } . . /// Execute `f` and commit the bindings if closure `f` returns `Ok(_)`. 2,456,486 ( 0.01%) #[instrument(skip(self, f), level = "debug")] 3,035,243 ( 0.01%) pub fn commit_if_ok(&self, f: F) -> Result . where . F: FnOnce(&CombinedSnapshot<'a, 'tcx>) -> Result, . { 474,725 ( 0.00%) let snapshot = self.start_snapshot(); 1,409,829 ( 0.00%) let r = f(&snapshot); . debug!("commit_if_ok() -- r.is_ok() = {}", r.is_ok()); 474,129 ( 0.00%) match r { . Ok(_) => { 2,763,288 ( 0.01%) self.commit_from(snapshot); . } . Err(_) => { 457,157 ( 0.00%) self.rollback_to("commit_if_ok -- error", snapshot); . } . } 2,633,264 ( 0.01%) r . } . . /// Execute `f` then unroll any bindings it creates. 593,618 ( 0.00%) #[instrument(skip(self, f), level = "debug")] 695,007 ( 0.00%) pub fn probe(&self, f: F) -> R . where . F: FnOnce(&CombinedSnapshot<'a, 'tcx>) -> R, . { 162,408 ( 0.00%) let snapshot = self.start_snapshot(); 264,674 ( 0.00%) let r = f(&snapshot); 782,244 ( 0.00%) self.rollback_to("probe", snapshot); 201,186 ( 0.00%) r . } . . /// If `should_skip` is true, then execute `f` then unroll any bindings it creates. 396 ( 0.00%) #[instrument(skip(self, f), level = "debug")] 528 ( 0.00%) pub fn probe_maybe_skip_leak_check(&self, should_skip: bool, f: F) -> R . where . F: FnOnce(&CombinedSnapshot<'a, 'tcx>) -> R, . { 88 ( 0.00%) let snapshot = self.start_snapshot(); 44 ( 0.00%) let was_skip_leak_check = self.skip_leak_check.get(); 88 ( 0.00%) if should_skip { . self.skip_leak_check.set(true); . } 176 ( 0.00%) let r = f(&snapshot); 396 ( 0.00%) self.rollback_to("probe", snapshot); . self.skip_leak_check.set(was_skip_leak_check); 528 ( 0.00%) 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 45,422 ( 0.00%) pub fn region_constraints_added_in_snapshot( . &self, . snapshot: &CombinedSnapshot<'a, 'tcx>, . ) -> Option { 90,844 ( 0.00%) self.inner . .borrow_mut() . .unwrap_region_constraints() . .region_constraints_added_in_snapshot(&snapshot.undo_snapshot) 68,133 ( 0.00%) } . 6 ( 0.00%) pub fn add_given(&self, sub: ty::Region<'tcx>, sup: ty::RegionVid) { 12 ( 0.00%) self.inner.borrow_mut().unwrap_region_constraints().add_given(sub, sup); 9 ( 0.00%) } . 3,336 ( 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. . }) . }) 2,502 ( 0.00%) } . 15,792 ( 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. . }) . }) 11,844 ( 0.00%) } . 470,840 ( 0.00%) #[instrument(skip(self), level = "debug")] . pub fn sub_regions( . &self, . origin: SubregionOrigin<'tcx>, . a: ty::Region<'tcx>, . b: ty::Region<'tcx>, . ) { 423,756 ( 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`. 5 ( 0.00%) #[instrument(skip(self), level = "debug")] . pub fn member_constraint( . &self, . opaque_type_def_id: DefId, . definition_span: Span, . hidden_ty: Ty<'tcx>, . region: ty::Region<'tcx>, . in_regions: &Lrc>>, . ) { 5 ( 0.00%) self.inner.borrow_mut().unwrap_region_constraints().member_constraint( . opaque_type_def_id, . definition_span, . hidden_ty, . region, . in_regions, . ); . } . -- line 961 ---------------------------------------- -- 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.) 1,950 ( 0.00%) pub fn coerce_predicate( . &self, . cause: &ObligationCause<'tcx>, . param_env: ty::ParamEnv<'tcx>, . predicate: ty::PolyCoercePredicate<'tcx>, . ) -> Option> { 1,300 ( 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, . }); 3,250 ( 0.00%) self.subtype_predicate(cause, param_env, subtype_predicate) 2,600 ( 0.00%) } . 136,716 ( 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. 11,393 ( 0.00%) let r_a = self.shallow_resolve(predicate.skip_binder().a); 11,393 ( 0.00%) let r_b = self.shallow_resolve(predicate.skip_binder().b); 73,684 ( 0.00%) match (r_a.kind(), r_b.kind()) { 15,274 ( 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); 15,274 ( 0.00%) return None; . } . _ => {} . } . . Some(self.commit_if_ok(|_snapshot| { 3,756 ( 0.00%) let ty::SubtypePredicate { a_is_expected, a, b } = . self.replace_bound_vars_with_placeholders(predicate); . 7,512 ( 0.00%) let ok = self.at(cause, param_env).sub_exp(a_is_expected, a, b)?; . . Ok(ok.unit()) . })) 102,537 ( 0.00%) } . 157,272 ( 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) . }); 131,060 ( 0.00%) self.sub_regions(origin, r_b, r_a); // `b : a` ==> `a <= b` . Ok(()) . }) 104,848 ( 0.00%) } . . /// Number of type variables created so far. 221 ( 0.00%) pub fn num_ty_vars(&self) -> usize { . self.inner.borrow_mut().type_variables().num_vars() 442 ( 0.00%) } . 106,518 ( 0.00%) pub fn next_ty_var_id(&self, origin: TypeVariableOrigin) -> TyVid { 532,590 ( 0.00%) self.inner.borrow_mut().type_variables().new_var(self.universe(), origin) 159,777 ( 0.00%) } . 90,976 ( 0.00%) pub fn next_ty_var(&self, origin: TypeVariableOrigin) -> Ty<'tcx> { 367,554 ( 0.00%) self.tcx.mk_ty_var(self.next_ty_var_id(origin)) 136,464 ( 0.00%) } . 5,486 ( 0.00%) pub fn next_ty_var_in_universe( . &self, . origin: TypeVariableOrigin, . universe: ty::UniverseIndex, . ) -> Ty<'tcx> { 30,173 ( 0.00%) let vid = self.inner.borrow_mut().type_variables().new_var(universe, origin); 2,743 ( 0.00%) self.tcx.mk_ty_var(vid) 8,229 ( 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 { 1,660 ( 0.00%) self.inner.borrow_mut().int_unification_table().new_key(None) . } . 996 ( 0.00%) pub fn next_int_var(&self) -> Ty<'tcx> { . self.tcx.mk_int_var(self.next_int_var_id()) 1,328 ( 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. 57,064 ( 0.00%) pub fn next_region_var(&self, origin: RegionVariableOrigin) -> ty::Region<'tcx> { 1,312,029 ( 0.00%) self.next_region_var_in_universe(origin, self.universe()) 114,128 ( 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. 560,192 ( 0.00%) pub fn next_region_var_in_universe( . &self, . origin: RegionVariableOrigin, . universe: ty::UniverseIndex, . ) -> ty::Region<'tcx> { . let region_var = 3,641,248 ( 0.01%) self.inner.borrow_mut().unwrap_region_constraints().new_region_var(universe, origin); 1,400,480 ( 0.00%) self.tcx.mk_region(ty::ReVar(region_var)) 840,288 ( 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. 93,744 ( 0.00%) pub fn universe_of_region(&self, r: ty::Region<'tcx>) -> ty::UniverseIndex { . self.inner.borrow_mut().unwrap_region_constraints().universe(r) 140,616 ( 0.00%) } . . /// Number of region variables created so far. 21,358 ( 0.00%) pub fn num_region_vars(&self) -> usize { . self.inner.borrow_mut().unwrap_region_constraints().num_region_vars() 32,037 ( 0.00%) } . . /// Just a convenient wrapper of `next_region_var` for using during NLL. 120,753 ( 0.00%) pub fn next_nll_region_var(&self, origin: NllRegionVariableOrigin) -> ty::Region<'tcx> { . self.next_region_var(RegionVariableOrigin::Nll(origin)) 241,506 ( 0.00%) } . . /// Just a convenient wrapper of `next_region_var` for using during NLL. 1,973 ( 0.00%) pub fn next_nll_region_var_in_universe( . &self, . origin: NllRegionVariableOrigin, . universe: ty::UniverseIndex, . ) -> ty::Region<'tcx> { 14,951 ( 0.00%) self.next_region_var_in_universe(RegionVariableOrigin::Nll(origin), universe) 3,946 ( 0.00%) } . 878,720 ( 0.00%) pub fn var_for_def(&self, span: Span, param: &ty::GenericParamDef) -> GenericArg<'tcx> { 483,462 ( 0.00%) match param.kind { . GenericParamDefKind::Lifetime => { . // Create a region inference variable for the given . // region parameter definition. 32,869 ( 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)`. 305,468 ( 0.00%) let ty_var_id = self.inner.borrow_mut().type_variables().new_var( . self.universe(), 381,835 ( 0.00%) TypeVariableOrigin { . kind: TypeVariableOriginKind::TypeParameterDefinition( 76,367 ( 0.00%) param.name, 76,367 ( 0.00%) Some(param.def_id), . ), . span, . }, . ); . 76,367 ( 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 = 6,644 ( 0.00%) self.inner.borrow_mut().const_unification_table().new_key(ConstVarValue { . origin, . val: ConstVariableValue::Unknown { universe: self.universe() }, . }); 604 ( 0.00%) self.tcx.mk_const_var(const_var_id, self.tcx.type_of(param.def_id)).into() . } . } 4,832 ( 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. 167,535 ( 0.00%) pub fn fresh_substs_for_item(&self, span: Span, def_id: DefId) -> SubstsRef<'tcx> { 835,990 ( 0.00%) InternalSubsts::for_item(self.tcx, def_id, |param, _| self.var_for_def(span, param)) 111,690 ( 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). 5,610 ( 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() . ); . 153,387 ( 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() 8,415 ( 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`. 156,044 ( 0.00%) pub fn resolve_regions( . &self, . region_context: DefId, . outlives_env: &OutlivesEnvironment<'tcx>, . mode: RegionckMode, . ) -> Vec> { 423,548 ( 0.00%) let (var_infos, data) = { . let mut inner = self.inner.borrow_mut(); . let inner = &mut *inner; 22,292 ( 0.00%) assert!( 66,876 ( 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() 22,292 ( 0.00%) }; . . let region_rels = 22,292 ( 0.00%) &RegionRelations::new(self.tcx, region_context, outlives_env.free_region_map()); . 200,628 ( 0.00%) let (lexical_region_resolutions, errors) = 535,008 ( 0.00%) lexical_region_resolve::resolve(region_rels, var_infos, data, mode); . 89,168 ( 0.00%) let old_value = self.lexical_region_resolutions.replace(Some(lexical_region_resolutions)); 22,292 ( 0.00%) assert!(old_value.is_none()); . . errors 200,628 ( 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`. 222,920 ( 0.00%) pub fn resolve_regions_and_report_errors( . &self, . region_context: DefId, . outlives_env: &OutlivesEnvironment<'tcx>, . mode: RegionckMode, . ) { 44,584 ( 0.00%) let errors = self.resolve_regions(region_context, outlives_env, mode); . 66,876 ( 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. 44,584 ( 0.00%) self.report_region_errors(&errors); . } 111,460 ( 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 . /// region constraints as normal, but then we take them and . /// translate them into the form that the NLL solver . /// understands. See the NLL module for mode details. 6 ( 0.00%) pub fn take_and_reset_region_constraints(&self) -> RegionConstraintData<'tcx> { 2 ( 0.00%) assert!( . self.inner.borrow().region_obligations.is_empty(), . "region_obligations not empty: {:#?}", . self.inner.borrow().region_obligations . ); . 8 ( 0.00%) self.inner.borrow_mut().unwrap_region_constraints().take_and_reset_data() 10 ( 0.00%) } . . /// 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(); 37,820 ( 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. 13,040 ( 0.00%) pub fn take_region_var_origins(&self) -> VarInfos { . let mut inner = self.inner.borrow_mut(); 49,552 ( 0.00%) let (var_infos, data) = inner . .region_constraint_storage . .take() . .expect("regions already resolved") . .with_log(&mut inner.undo_log) 2,608 ( 0.00%) .into_infos_and_data(); 2,608 ( 0.00%) assert!(data.is_empty()); . var_infos 20,864 ( 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)`. 39,186 ( 0.00%) pub fn probe_ty_var(&self, vid: TyVid) -> Result, ty::UniverseIndex> { . use self::type_variable::TypeVariableValue; . 117,558 ( 0.00%) match self.inner.borrow_mut().type_variables().probe(vid) { . TypeVariableValue::Known { value } => Ok(value), . TypeVariableValue::Unknown { universe } => Err(universe), . } 137,151 ( 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>, . { 1,020,387 ( 0.00%) value.fold_with(&mut ShallowResolver { infcx: self }) . } . 72,884 ( 0.00%) pub fn root_var(&self, var: ty::TyVid) -> ty::TyVid { . self.inner.borrow_mut().type_variables().root_var(var) 109,326 ( 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. 8,644 ( 0.00%) pub fn resolve_vars_if_possible(&self, value: T) -> T . where . T: TypeFoldable<'tcx>, . { 1,019,963 ( 0.00%) if !value.needs_infer() { 617,268 ( 0.00%) return value; // Avoid duplicated subst-folding. . } 1,140,623 ( 0.00%) let mut r = resolve::OpportunisticVarResolver::new(self); 1,410,555 ( 0.00%) value.fold_with(&mut r) 10,497 ( 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) . } . 85,212 ( 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 = 547,282 ( 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 }, . ) . }; 552,550 ( 0.00%) self.tcx.replace_bound_vars(value, fld_r, fld_t, fld_c) 56,808 ( 0.00%) } . . /// See the [`region_constraints::RegionConstraintCollector::verify_generic_bound`] method. 2,368 ( 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); . 888 ( 0.00%) self.inner . .borrow_mut() . .unwrap_region_constraints() 5,032 ( 0.00%) .verify_generic_bound(origin, kind, a, bound); 2,072 ( 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. 6,710 ( 0.00%) pub fn closure_kind(&self, closure_substs: SubstsRef<'tcx>) -> Option { 13,420 ( 0.00%) let closure_kind_ty = closure_substs.as_closure().kind_ty(); . let closure_kind_ty = self.shallow_resolve(closure_kind_ty); 10,065 ( 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 { 1,749,358 ( 0.00%) self.universe.get() 590,875 ( 0.00%) } . . /// Creates and return a fresh universe that extends all previous . /// universes. Updates `self.universe` to that new universe. 778 ( 0.00%) pub fn create_next_universe(&self) -> ty::UniverseIndex { 936 ( 0.00%) let u = self.universe.get().next_universe(); . self.universe.set(u); . u 778 ( 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`. 12,493,984 ( 0.03%) fn shallow_resolve_ty(&self, typ: Ty<'tcx>) -> Ty<'tcx> { 6,653,449 ( 0.02%) 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`. 3,480,820 ( 0.01%) let known = self.inner.borrow_mut().type_variables().probe(v).known(); . known.map_or(typ, |t| self.shallow_resolve_ty(t)) . } . 30,048 ( 0.00%) ty::Infer(ty::IntVar(v)) => self . .inner . .borrow_mut() . .int_unification_table() . .probe_value(v) 8,994 ( 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, . } 14,055,732 ( 0.04%) } . . /// `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))`. 175,381,690 ( 0.45%) 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(_)`. 62,166 ( 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`). 40,050 ( 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, . } 40,050 ( 0.00%) } . . /// Tries to extract an inference variable from a type, returns `None` . /// for types other than `ty::Infer(_)` (or `InferTy::Fresh*`). 15,258 ( 0.00%) pub fn maybe_from_ty(ty: Ty<'tcx>) -> Option { 497,003 ( 0.00%) match *ty.kind() { 109,972 ( 0.00%) ty::Infer(ty::TyVar(v)) => Some(TyOrConstInferVar::Ty(v)), 594 ( 0.00%) ty::Infer(ty::IntVar(v)) => Some(TyOrConstInferVar::TyInt(v)), . ty::Infer(ty::FloatVar(v)) => Some(TyOrConstInferVar::TyFloat(v)), . _ => None, . } 15,258 ( 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> { 2,389,227 ( 0.01%) self.infcx.shallow_resolve_ty(ty) . } . 4,200 ( 0.00%) fn fold_const(&mut self, ct: &'tcx ty::Const<'tcx>) -> &'tcx ty::Const<'tcx> { 3,556 ( 0.00%) if let ty::Const { val: ty::ConstKind::Infer(InferConst::Var(vid)), .. } = ct { 3,640 ( 0.00%) self.infcx . .inner . .borrow_mut() . .const_unification_table() 2,184 ( 0.00%) .probe_value(*vid) . .val . .known() . .unwrap_or(ct) . } else { . ct . } 5,250 ( 0.00%) } . } . . impl<'tcx> TypeTrace<'tcx> { . pub fn span(&self) -> Span { 2,048 ( 0.00%) self.cause.span . } . . pub fn types( . cause: &ObligationCause<'tcx>, . a_is_expected: bool, . a: Ty<'tcx>, . b: Ty<'tcx>, . ) -> TypeTrace<'tcx> { -- line 1792 ---------------------------------------- -- line 1800 ---------------------------------------- . b: &'tcx ty::Const<'tcx>, . ) -> TypeTrace<'tcx> { . TypeTrace { cause: cause.clone(), values: Consts(ExpectedFound::new(a_is_expected, a, b)) } . } . } . . impl<'tcx> SubregionOrigin<'tcx> { . pub fn span(&self) -> Span { 5,120 ( 0.00%) match *self { 1,024 ( 0.00%) Subtype(ref a) => a.span(), . RelateObjectBound(a) => a, . RelateParamBound(a, ..) => a, . RelateRegionParamBound(a) => a, . Reborrow(a) => a, . ReborrowUpvar(a, _) => a, . DataBorrowed(_, a) => a, . ReferenceOutlivesReferent(_, a) => a, . CompareImplMethodObligation { span, .. } => span, -- line 1817 ---------------------------------------- -- line 1818 ---------------------------------------- . CompareImplTypeObligation { span, .. } => span, . } . } . . pub fn from_obligation_cause(cause: &traits::ObligationCause<'tcx>, default: F) -> Self . where . F: FnOnce() -> Self, . { 149,758 ( 0.00%) match *cause.code() { 15,890 ( 0.00%) traits::ObligationCauseCode::ReferenceOutlivesReferent(ref_type) => { 79,450 ( 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 ---------------------------------------- 114,347,180 ( 0.29%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_trait_selection/src/traits/select/mod.rs -------------------------------------------------------------------------------- Ir -- line 208 ---------------------------------------- . /// There is no built-in impl. There may be some other . /// candidate (a where-clause or user-defined impl). . None, . /// It is unknown whether there is an impl. . Ambiguous, . } . . impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> { 935,940 ( 0.00%) pub fn new(infcx: &'cx InferCtxt<'cx, 'tcx>) -> SelectionContext<'cx, 'tcx> { 5,308,039 ( 0.01%) SelectionContext { . infcx, 756,851 ( 0.00%) freshener: infcx.freshener_keep_static(), . intercrate: false, . intercrate_ambiguity_causes: None, . allow_negative_impls: false, . query_mode: TraitQueryMode::Standard, . } 779,950 ( 0.00%) } . . pub fn intercrate(infcx: &'cx InferCtxt<'cx, 'tcx>) -> SelectionContext<'cx, 'tcx> { 704 ( 0.00%) SelectionContext { . infcx, 88 ( 0.00%) freshener: infcx.freshener_keep_static(), . intercrate: true, . intercrate_ambiguity_causes: None, . allow_negative_impls: false, . query_mode: TraitQueryMode::Standard, . } . } . . pub fn with_negative( -- line 238 ---------------------------------------- -- line 245 ---------------------------------------- . freshener: infcx.freshener_keep_static(), . intercrate: false, . intercrate_ambiguity_causes: None, . allow_negative_impls, . query_mode: TraitQueryMode::Standard, . } . } . 80,800 ( 0.00%) pub fn with_query_mode( . infcx: &'cx InferCtxt<'cx, 'tcx>, . query_mode: TraitQueryMode, . ) -> SelectionContext<'cx, 'tcx> { . debug!(?query_mode, "with_query_mode"); 161,600 ( 0.00%) SelectionContext { . infcx, 10,100 ( 0.00%) freshener: infcx.freshener_keep_static(), . intercrate: false, . intercrate_ambiguity_causes: None, . allow_negative_impls: false, . query_mode, . } 60,600 ( 0.00%) } . . /// Enables tracking of intercrate ambiguity causes. These are . /// used in coherence to give improved diagnostics. We don't do . /// this until we detect a coherence error because it can lead to . /// false overflow results (#47139) and because it costs . /// computation time. . pub fn enable_tracking_intercrate_ambiguity_causes(&mut self) { . assert!(self.intercrate); -- line 274 ---------------------------------------- -- line 281 ---------------------------------------- . /// was enabled and disables tracking at the same time. If . /// tracking is not enabled, just returns an empty vector. . pub fn take_intercrate_ambiguity_causes(&mut self) -> Vec { . assert!(self.intercrate); . self.intercrate_ambiguity_causes.take().unwrap_or_default() . } . . pub fn infcx(&self) -> &'cx InferCtxt<'cx, 'tcx> { 176,890,106 ( 0.45%) self.infcx 136,150 ( 0.00%) } . . pub fn tcx(&self) -> TyCtxt<'tcx> { 1,722,255 ( 0.00%) self.infcx.tcx . } . . pub fn is_intercrate(&self) -> bool { 84,166 ( 0.00%) self.intercrate . } . . /////////////////////////////////////////////////////////////////////////// . // Selection . // . // The selection phase tries to identify *how* an obligation will . // be resolved. For example, it will identify which impl or . // parameter bound is to be used. The process can be inconclusive -- line 305 ---------------------------------------- -- line 309 ---------------------------------------- . // 1. If no applicable impl or parameter bound can be found. . // 2. If the output type parameters in the obligation do not match . // those specified by the impl/bound. For example, if the obligation . // is `Vec: Iterable`, but the impl specifies . // `impl Iterable for Vec`, than an error would result. . . /// Attempts to satisfy the obligation. If successful, this will affect the surrounding . /// type environment by performing unification. 818,587 ( 0.00%) #[instrument(level = "debug", skip(self))] 1,052,469 ( 0.00%) pub fn select( . &mut self, . obligation: &TraitObligation<'tcx>, . ) -> SelectionResult<'tcx, Selection<'tcx>> { 855,981 ( 0.00%) let candidate = match self.select_from_obligation(obligation) { . Err(SelectionError::Overflow) => { . // In standard mode, overflow must have been caught and reported . // earlier. . assert!(self.query_mode == TraitQueryMode::Canonical); . return Err(SelectionError::Overflow); . } . Err(SelectionError::Ambiguous(_)) => { . return Ok(None); . } . Err(e) => { 250,236 ( 0.00%) return Err(e); . } . Ok(None) => { 69,648 ( 0.00%) return Ok(None); . } 450,168 ( 0.00%) Ok(Some(candidate)) => candidate, . }; . 757,884 ( 0.00%) match self.confirm_candidate(obligation, candidate) { . Err(SelectionError::Overflow) => { . assert!(self.query_mode == TraitQueryMode::Canonical); . Err(SelectionError::Overflow) . } 49,426 ( 0.00%) Err(e) => Err(e), . Ok(candidate) => { . debug!(?candidate, "confirmed"); 854,712 ( 0.00%) Ok(Some(candidate)) . } . } . } . 1,169,410 ( 0.00%) crate fn select_from_obligation( . &mut self, . obligation: &TraitObligation<'tcx>, . ) -> SelectionResult<'tcx, SelectionCandidate<'tcx>> { . debug_assert!(!obligation.predicate.has_escaping_bound_vars()); . . let pec = &ProvisionalEvaluationCache::default(); . let stack = self.push_stack(TraitObligationStackList::empty(pec), obligation); . 233,882 ( 0.00%) self.candidate_from_obligation(&stack) 1,052,469 ( 0.00%) } . . /////////////////////////////////////////////////////////////////////////// . // EVALUATION . // . // Tests whether an obligation can be selected or whether an impl . // can be applied to particular types. It skips the "confirmation" . // step and hence completely ignores output type parameters. . // -- line 372 ---------------------------------------- -- line 374 ---------------------------------------- . // we can be sure it does not. . . /// Evaluates whether the obligation `obligation` can be satisfied (by any means). . pub fn predicate_may_hold_fatal(&mut self, obligation: &PredicateObligation<'tcx>) -> bool { . debug!(?obligation, "predicate_may_hold_fatal"); . . // This fatal query is a stopgap that should only be used in standard mode, . // where we do not expect overflow to be propagated. 4 ( 0.00%) assert!(self.query_mode == TraitQueryMode::Standard); . 20 ( 0.00%) self.evaluate_root_obligation(obligation) . .expect("Overflow should be caught earlier in standard query mode") . .may_apply() . } . . /// Evaluates whether the obligation `obligation` can be satisfied . /// and returns an `EvaluationResult`. This is meant for the . /// *initial* call. 20,200 ( 0.00%) pub fn evaluate_root_obligation( . &mut self, . obligation: &PredicateObligation<'tcx>, . ) -> Result { . self.evaluation_probe(|this| { 30,312 ( 0.00%) this.evaluate_predicate_recursively( . TraitObligationStackList::empty(&ProvisionalEvaluationCache::default()), . obligation.clone(), . ) . }) 20,200 ( 0.00%) } . . fn evaluation_probe( . &mut self, . op: impl FnOnce(&mut Self) -> Result, . ) -> Result { 160,263 ( 0.00%) self.infcx.probe(|snapshot| -> Result { 20,208 ( 0.00%) let result = op(self)?; . 158,977 ( 0.00%) match self.infcx.leak_check(true, snapshot) { . Ok(()) => {} . Err(_) => return Ok(EvaluatedToErr), . } . 113,555 ( 0.00%) match self.infcx.region_constraints_added_in_snapshot(snapshot) { . None => Ok(result), . Some(_) => Ok(result.max(EvaluatedToOkModuloRegions)), . } . }) . } . . /// Evaluates the predicates in `predicates` recursively. Note that . /// this applies projections in the predicates, and therefore . /// is run within an inference probe. 230,480 ( 0.00%) #[instrument(skip(self, stack), level = "debug")] . fn evaluate_predicates_recursively<'o, I>( . &mut self, . stack: TraitObligationStackList<'o, 'tcx>, . predicates: I, . ) -> Result . where . I: IntoIterator> + std::fmt::Debug, . { . let mut result = EvaluatedToOk; 140,939 ( 0.00%) for obligation in predicates { 37,268 ( 0.00%) let eval = self.evaluate_predicate_recursively(stack, obligation.clone())?; 18,634 ( 0.00%) if let EvaluatedToErr = eval { . // fast-path - EvaluatedToErr is the top of the lattice, . // so we don't need to look on the other predicates. . return Ok(EvaluatedToErr); . } else { . result = cmp::max(result, eval); . } . } . Ok(result) . } . 194,210 ( 0.00%) #[instrument( . level = "debug", . skip(self, previous_stack), . fields(previous_stack = ?previous_stack.head()) 174,789 ( 0.00%) )] . fn evaluate_predicate_recursively<'o>( . &mut self, . previous_stack: TraitObligationStackList<'o, 'tcx>, . obligation: PredicateObligation<'tcx>, . ) -> Result { . // `previous_stack` stores a `TraitObligation`, while `obligation` is . // a `PredicateObligation`. These are distinct types, so we can't . // use any `Option` combinator method that would force them to be . // the same. 38,842 ( 0.00%) match previous_stack.head() { 18,342 ( 0.00%) Some(h) => self.check_recursion_limit(&obligation, h.obligation)?, 10,250 ( 0.00%) None => self.check_recursion_limit(&obligation, &obligation)?, . } . 116,526 ( 0.00%) let result = ensure_sufficient_stack(|| { 19,421 ( 0.00%) let bound_predicate = obligation.predicate.kind(); 194,210 ( 0.00%) match bound_predicate.skip_binder() { . ty::PredicateKind::Trait(t) => { . let t = bound_predicate.rebind(t); . debug_assert!(!t.has_escaping_bound_vars()); . let obligation = obligation.with(t); 283,005 ( 0.00%) self.evaluate_trait_predicate_recursively(previous_stack, obligation) . } . . ty::PredicateKind::Subtype(p) => { . let p = bound_predicate.rebind(p); . // Does this code ever run? 120 ( 0.00%) match self.infcx.subtype_predicate(&obligation.cause, obligation.param_env, p) { . Some(Ok(InferOk { mut obligations, .. })) => { . self.add_depth(obligations.iter_mut(), obligation.recursion_depth); . self.evaluate_predicates_recursively( . previous_stack, . obligations.into_iter(), . ) . } . Some(Err(_)) => Ok(EvaluatedToErr), -- line 489 ---------------------------------------- -- line 522 ---------------------------------------- . None => Ok(EvaluatedToAmbig), . }, . . ty::PredicateKind::TypeOutlives(pred) => { . // A global type with no late-bound regions can only . // contain the "'static" lifetime (any other lifetime . // would either be late-bound or local), so it is guaranteed . // to outlive any other lifetime 45 ( 0.00%) if pred.0.is_global() && !pred.0.has_late_bound_regions() { . Ok(EvaluatedToOk) . } else { . Ok(EvaluatedToOkModuloRegions) . } . } . . ty::PredicateKind::RegionOutlives(..) => { . // We do not consider region relationships when evaluating trait matches. -- line 538 ---------------------------------------- -- line 545 ---------------------------------------- . } else { . Ok(EvaluatedToErr) . } . } . . ty::PredicateKind::Projection(data) => { . let data = bound_predicate.rebind(data); . let project_obligation = obligation.with(data); 1,884 ( 0.00%) match project::poly_project_and_unify_type(self, &project_obligation) { 1,535 ( 0.00%) Ok(Ok(Some(mut subobligations))) => { . 'compute_res: { . // If we've previously marked this projection as 'complete', thne . // use the final cached result (either `EvaluatedToOk` or . // `EvaluatedToOkModuloRegions`), and skip re-evaluating the . // sub-obligations. 1,228 ( 0.00%) if let Some(key) = 2,763 ( 0.00%) ProjectionCacheKey::from_poly_projection_predicate(self, data) . { 2,392 ( 0.00%) if let Some(cached_res) = self . .infcx . .inner . .borrow_mut() . .projection_cache() . .is_complete(key) . { . break 'compute_res Ok(cached_res); . } . } . 588 ( 0.00%) self.add_depth( . subobligations.iter_mut(), 588 ( 0.00%) obligation.recursion_depth, . ); 588 ( 0.00%) let res = self.evaluate_predicates_recursively( 882 ( 0.00%) previous_stack, 1,470 ( 0.00%) subobligations, . ); 1,176 ( 0.00%) if let Ok(res) = res { 588 ( 0.00%) if res == EvaluatedToOk || res == EvaluatedToOkModuloRegions { 1,140 ( 0.00%) if let Some(key) = 285 ( 0.00%) ProjectionCacheKey::from_poly_projection_predicate( 1,995 ( 0.00%) self, data, . ) . { . // If the result is something that we can cache, then mark this . // entry as 'complete'. This will allow us to skip evaluating the . // suboligations at all the next time we evaluate the projection . // predicate. 1,939 ( 0.00%) self.infcx . .inner . .borrow_mut() . .projection_cache() . .complete(key, res); . } . } . } . res -- line 601 ---------------------------------------- -- line 603 ---------------------------------------- . } . Ok(Ok(None)) => Ok(EvaluatedToAmbig), . Ok(Err(project::InProgress)) => Ok(EvaluatedToRecur), . Err(_) => Ok(EvaluatedToErr), . } . } . . ty::PredicateKind::ClosureKind(_, closure_substs, kind) => { 1,015 ( 0.00%) match self.infcx.closure_kind(closure_substs) { . Some(closure_kind) => { 609 ( 0.00%) if closure_kind.extends(kind) { . Ok(EvaluatedToOk) . } else { . Ok(EvaluatedToErr) . } . } . None => Ok(EvaluatedToAmbig), . } . } -- line 621 ---------------------------------------- -- line 693 ---------------------------------------- . } . } . } . } . ty::PredicateKind::TypeWellFormedFromEnv(..) => { . bug!("TypeWellFormedFromEnv is only used for chalk") . } . } 19,421 ( 0.00%) }); . . debug!("finished: {:?} from {:?}", result, obligation); . . result . } . 396,207 ( 0.00%) #[instrument(skip(self, previous_stack), level = "debug")] . fn evaluate_trait_predicate_recursively<'o>( . &mut self, . previous_stack: TraitObligationStackList<'o, 'tcx>, . mut obligation: TraitObligation<'tcx>, . ) -> Result { 37,734 ( 0.00%) if !self.intercrate . && obligation.is_global() . && obligation.param_env.caller_bounds().iter().all(|bound| bound.needs_subst()) . { . // If a param env has no global bounds, global obligations do not . // depend on its particular value in order to work, so we can clear . // out the param env and get better caching. . debug!("in global"); 27,984 ( 0.00%) obligation.param_env = obligation.param_env.without_caller_bounds(); . } . . let stack = self.push_stack(previous_stack, &obligation); . let mut fresh_trait_pred = stack.fresh_trait_pred; 37,734 ( 0.00%) let mut param_env = obligation.param_env; . . fresh_trait_pred = fresh_trait_pred.map_bound(|mut pred| { 18,867 ( 0.00%) pred.remap_constness(self.tcx(), &mut param_env); 226,404 ( 0.00%) pred . }); . . debug!(?fresh_trait_pred); . 21,974 ( 0.00%) if let Some(result) = self.check_evaluation_cache(param_env, fresh_trait_pred) { . debug!(?result, "CACHE HIT"); . return Ok(result); . } . . if let Some(result) = stack.cache().get_provisional(fresh_trait_pred) { . debug!(?result, "PROVISIONAL CACHE HIT"); . stack.update_reached_depth(result.reached_depth); . return Ok(result.result); -- line 744 ---------------------------------------- -- line 748 ---------------------------------------- . // stack. If so, we don't want to insert the result into the . // main cache (it is cycle dependent) nor the provisional . // cache (which is meant for things that have completed but . // for a "backedge" -- this result *is* the backedge). . if let Some(cycle_result) = self.check_evaluation_cycle(&stack) { . return Ok(cycle_result); . } . 98,802 ( 0.00%) let (result, dep_node) = self.in_task(|this| this.evaluate_stack(&stack)); 10,978 ( 0.00%) let result = result?; . 54,890 ( 0.00%) if !result.must_apply_modulo_regions() { . stack.cache().on_failure(stack.dfn); . } . 10,978 ( 0.00%) let reached_depth = stack.reached_depth.get(); 21,956 ( 0.00%) if reached_depth >= stack.depth { . debug!(?result, "CACHE MISS"); 208,582 ( 0.00%) self.insert_evaluation_cache(param_env, fresh_trait_pred, dep_node, result); . . stack.cache().on_completion( 21,956 ( 0.00%) stack.dfn, . |fresh_trait_pred, provisional_result, provisional_dep_node| { . // Create a new `DepNode` that has dependencies on: . // * The `DepNode` for the original evaluation that resulted in a provisional cache . // entry being crated . // * The `DepNode` for the *current* evaluation, which resulted in us completing . // provisional caches entries and inserting them into the evaluation cache . // . // This ensures that when a query reads this entry from the evaluation cache, -- line 777 ---------------------------------------- -- line 835 ---------------------------------------- . /// `self.freshener`, we can be sure that (a) this will not . /// affect the inferencer state and (b) that if we see two . /// fresh regions with the same index, they refer to the same . /// unbound type variable. . fn check_evaluation_cycle( . &mut self, . stack: &TraitObligationStack<'_, 'tcx>, . ) -> Option { 16 ( 0.00%) if let Some(cycle_depth) = stack . .iter() . .skip(1) // Skip top-most frame. . .find(|prev| { 5,254 ( 0.00%) stack.obligation.param_env == prev.obligation.param_env . && stack.fresh_trait_pred == prev.fresh_trait_pred . }) . .map(|stack| stack.depth) . { . debug!("evaluate_stack --> recursive at depth {}", cycle_depth); . . // If we have a stack like `A B C D E A`, where the top of . // the stack is the final `A`, then this will iterate over . // `A, E, D, C, B` -- i.e., all the participants apart . // from the cycle head. We mark them as participating in a . // cycle. This suppresses caching for those nodes. See . // `in_cycle` field for more details. 16 ( 0.00%) stack.update_reached_depth(cycle_depth); . . // Subtle: when checking for a coinductive cycle, we do . // not compare using the "freshened trait refs" (which . // have erased regions) but rather the fully explicit . // trait refs. This is important because it's only a cycle . // if the regions match exactly. 9 ( 0.00%) let cycle = stack.iter().skip(1).take_while(|s| s.depth >= cycle_depth); 8 ( 0.00%) let tcx = self.tcx(); 56 ( 0.00%) let cycle = cycle.map(|stack| stack.obligation.predicate.to_predicate(tcx)); 88 ( 0.00%) if self.coinductive_match(cycle) { . debug!("evaluate_stack --> recursive, coinductive"); . Some(EvaluatedToOk) . } else { . debug!("evaluate_stack --> recursive, inductive"); . Some(EvaluatedToRecur) . } . } else { . None . } . } . 98,802 ( 0.00%) fn evaluate_stack<'o>( . &mut self, . stack: &TraitObligationStack<'o, 'tcx>, . ) -> Result { . // In intercrate mode, whenever any of the generics are unbound, . // there can always be an impl. Even if there are no impls in . // this crate, perhaps the type would be unified with . // something from another crate that does provide an impl. . // -- line 890 ---------------------------------------- -- line 903 ---------------------------------------- . // imagine, this is just where we started. To avoid that, we . // check for unbound variables and return an ambiguous (hence possible) . // match if we've seen this trait before. . // . // This suffices to allow chains like `FnMut` implemented in . // terms of `Fn` etc, but we could probably make this more . // precise still. . let unbound_input_types = 10,978 ( 0.00%) stack.fresh_trait_pred.skip_binder().trait_ref.substs.types().any(|ty| ty.is_fresh()); . 32,934 ( 0.00%) if stack.obligation.polarity() != ty::ImplPolarity::Negative { . // This check was an imperfect workaround for a bug in the old . // intercrate mode; it should be removed when that goes away. 54,890 ( 0.00%) if unbound_input_types && self.intercrate { . debug!("evaluate_stack --> unbound argument, intercrate --> ambiguous",); . // Heuristics: show the diagnostics when there are no candidates in crate. . if self.intercrate_ambiguity_causes.is_some() { . debug!("evaluate_stack: intercrate_ambiguity_causes is some"); . if let Ok(candidate_set) = self.assemble_candidates(stack) { . if !candidate_set.ambiguous && candidate_set.vec.is_empty() { . let trait_ref = stack.obligation.predicate.skip_binder().trait_ref; . let self_ty = trait_ref.self_ty(); -- line 924 ---------------------------------------- -- line 937 ---------------------------------------- . self.intercrate_ambiguity_causes.as_mut().unwrap().push(cause); . } . } . } . return Ok(EvaluatedToAmbig); . } . } . 21,956 ( 0.00%) if unbound_input_types . && stack.iter().skip(1).any(|prev| { 213 ( 0.00%) stack.obligation.param_env == prev.obligation.param_env . && self.match_fresh_trait_refs( 284 ( 0.00%) stack.fresh_trait_pred, 284 ( 0.00%) prev.fresh_trait_pred, . prev.obligation.param_env, . ) . }) . { . debug!("evaluate_stack --> unbound argument, recursive --> giving up",); . return Ok(EvaluatedToUnknown); . } . 101,880 ( 0.00%) match self.candidate_from_obligation(stack) { 55,002 ( 0.00%) Ok(Some(c)) => self.evaluate_candidate(stack, &c), . Err(SelectionError::Ambiguous(_)) => Ok(EvaluatedToAmbig), . Ok(None) => Ok(EvaluatedToAmbig), . Err(Overflow) => Err(OverflowError::Canonical), . Err(ErrorReporting) => Err(OverflowError::ErrorReporting), . Err(..) => Ok(EvaluatedToErr), . } 109,780 ( 0.00%) } . . /// For defaulted traits, we use a co-inductive strategy to solve, so . /// that recursion is ok. This routine returns `true` if the top of the . /// stack (`cycle[0]`): . /// . /// - is a defaulted trait, . /// - it also appears in the backtrace at some position `X`, . /// - all the predicates at positions `X..` between `X` and the top are -- line 975 ---------------------------------------- -- line 977 ---------------------------------------- . pub fn coinductive_match(&mut self, mut cycle: I) -> bool . where . I: Iterator>, . { . cycle.all(|predicate| self.coinductive_predicate(predicate)) . } . . fn coinductive_predicate(&self, predicate: ty::Predicate<'tcx>) -> bool { 16 ( 0.00%) let result = match predicate.kind().skip_binder() { 72 ( 0.00%) ty::PredicateKind::Trait(ref data) => self.tcx().trait_is_auto(data.def_id()), . _ => false, . }; . debug!(?predicate, ?result, "coinductive_predicate"); . result . } . . /// Further evaluates `candidate` to decide whether all type parameters match and whether nested . /// obligations are met. Returns whether `candidate` remains viable after this further -- line 994 ---------------------------------------- -- line 998 ---------------------------------------- . skip(self, stack), . fields(depth = stack.obligation.recursion_depth) . )] . fn evaluate_candidate<'o>( . &mut self, . stack: &TraitObligationStack<'o, 'tcx>, . candidate: &SelectionCandidate<'tcx>, . ) -> Result { 21,522 ( 0.00%) let mut result = self.evaluation_probe(|this| { . let candidate = (*candidate).clone(); 172,328 ( 0.00%) match this.confirm_candidate(stack.obligation, candidate) { . Ok(selection) => { . debug!(?selection); 43,044 ( 0.00%) this.evaluate_predicates_recursively( . stack.list(), 139,893 ( 0.00%) selection.nested_obligations().into_iter(), . ) . } . Err(..) => Ok(EvaluatedToErr), . } . })?; . . // If we erased any lifetimes, then we want to use . // `EvaluatedToOkModuloRegions` instead of `EvaluatedToOk` -- line 1021 ---------------------------------------- -- line 1037 ---------------------------------------- . &self, . param_env: ty::ParamEnv<'tcx>, . trait_pred: ty::PolyTraitPredicate<'tcx>, . ) -> Option { . // Neither the global nor local cache is aware of intercrate . // mode, so don't do any caching. In particular, we might . // re-use the same `InferCtxt` with both an intercrate . // and non-intercrate `SelectionContext` 37,734 ( 0.00%) if self.intercrate { . return None; . } . . let tcx = self.tcx(); . if self.can_use_global_caches(param_env) { 125,888 ( 0.00%) if let Some(res) = tcx.evaluation_cache.get(¶m_env.and(trait_pred), tcx) { . return Some(res); . } . } 43,948 ( 0.00%) self.infcx.evaluation_cache.get(¶m_env.and(trait_pred), tcx) . } . 131,736 ( 0.00%) fn insert_evaluation_cache( . &mut self, . param_env: ty::ParamEnv<'tcx>, . trait_pred: ty::PolyTraitPredicate<'tcx>, . dep_node: DepNodeIndex, . result: EvaluationResult, . ) { . // Avoid caching results that depend on more than just the trait-ref . // - the stack can create recursion. 43,912 ( 0.00%) if result.is_stack_dependent() { . return; . } . . // Neither the global nor local cache is aware of intercrate . // mode, so don't do any caching. In particular, we might . // re-use the same `InferCtxt` with both an intercrate . // and non-intercrate `SelectionContext` 21,956 ( 0.00%) if self.intercrate { . return; . } . . if self.can_use_global_caches(param_env) { . if !trait_pred.needs_infer() { . debug!(?trait_pred, ?result, "insert_evaluation_cache global"); . // This may overwrite the cache with the same value . // FIXME: Due to #50507 this overwrites the different values . // This should be changed to use HashMapExt::insert_same . // when that is fixed 10,100 ( 0.00%) self.tcx().evaluation_cache.insert(param_env.and(trait_pred), dep_node, result); . return; . } . } . . debug!(?trait_pred, ?result, "insert_evaluation_cache"); 3,496 ( 0.00%) self.infcx.evaluation_cache.insert(param_env.and(trait_pred), dep_node, result); 87,824 ( 0.00%) } . . /// For various reasons, it's possible for a subobligation . /// to have a *lower* recursion_depth than the obligation used to create it. . /// Projection sub-obligations may be returned from the projection cache, . /// which results in obligations with an 'old' `recursion_depth`. . /// Additionally, methods like `InferCtxt.subtype_predicate` produce . /// subobligations without taking in a 'parent' depth, causing the . /// generated subobligations to have a `recursion_depth` of `0`. . /// . /// To ensure that obligation_depth never decreases, we force all subobligations . /// to have at least the depth of the original obligation. 294 ( 0.00%) fn add_depth>>( . &self, . it: I, . min_depth: usize, . ) { 3,440 ( 0.00%) it.for_each(|o| o.recursion_depth = cmp::max(min_depth, o.recursion_depth) + 1); 588 ( 0.00%) } . . fn check_recursion_depth>( . &self, . depth: usize, . error_obligation: &Obligation<'tcx, T>, . ) -> Result<(), OverflowError> { 589,360 ( 0.00%) if !self.infcx.tcx.recursion_limit().value_within_limit(depth) { . match self.query_mode { . TraitQueryMode::Standard => { . if self.infcx.is_tainted_by_errors() { . return Err(OverflowError::ErrorReporting); . } . self.infcx.report_overflow_error(error_obligation, true); . } . TraitQueryMode::Canonical => { -- line 1126 ---------------------------------------- -- line 1143 ---------------------------------------- . ) -> Result<(), OverflowError> { . self.check_recursion_depth(obligation.recursion_depth, error_obligation) . } . . fn in_task(&mut self, op: OP) -> (R, DepNodeIndex) . where . OP: FnOnce(&mut Self) -> R, . { 268,359 ( 0.00%) let (result, dep_node) = 211,682 ( 0.00%) self.tcx().dep_graph.with_anon_task(self.tcx(), DepKind::TraitSelect, || op(self)); . self.tcx().dep_graph.read_index(dep_node); 247,716 ( 0.00%) (result, dep_node) . } . . /// filter_impls filters constant trait obligations and candidates that have a positive impl . /// for a negative goal and a negative impl for a positive goal . #[instrument(level = "debug", skip(self))] . fn filter_impls( . &mut self, . candidates: Vec>, . obligation: &TraitObligation<'tcx>, . ) -> Vec> { . let tcx = self.tcx(); . let mut result = Vec::with_capacity(candidates.len()); . 298,241 ( 0.00%) for candidate in candidates { . // Respect const trait obligations 53,688 ( 0.00%) if obligation.is_const() { 30 ( 0.00%) match candidate { . // const impl . ImplCandidate(def_id) . if tcx.impl_constness(def_id) == hir::Constness::Const => {} . // const param . ParamCandidate(trait_pred) . if trait_pred.skip_binder().constness . == ty::BoundConstness::ConstIfConst => {} . // auto trait impl -- line 1179 ---------------------------------------- -- line 1186 ---------------------------------------- . ConstDropCandidate(_) => {} . _ => { . // reject all other types of candidates . continue; . } . } . } . 35,772 ( 0.00%) if let ImplCandidate(def_id) = candidate { 19,634 ( 0.00%) if ty::ImplPolarity::Reservation == tcx.impl_polarity(def_id) 9,814 ( 0.00%) || obligation.polarity() == tcx.impl_polarity(def_id) . || self.allow_negative_impls . { . result.push(candidate); . } . } else { . result.push(candidate); . } . } . 81,108 ( 0.00%) result . } . . /// filter_reservation_impls filter reservation impl for any goal as ambiguous 279,888 ( 0.00%) #[instrument(level = "debug", skip(self))] . fn filter_reservation_impls( . &mut self, . candidate: SelectionCandidate<'tcx>, . obligation: &TraitObligation<'tcx>, . ) -> SelectionResult<'tcx, SelectionCandidate<'tcx>> { . let tcx = self.tcx(); . // Treat reservation impls as ambiguity. 49,692 ( 0.00%) if let ImplCandidate(def_id) = candidate { 16,764 ( 0.00%) if let ty::ImplPolarity::Reservation = tcx.impl_polarity(def_id) { . if let Some(intercrate_ambiguity_clauses) = &mut self.intercrate_ambiguity_causes { . let attrs = tcx.get_attrs(def_id); . let attr = tcx.sess.find_by_name(&attrs, sym::rustc_reservation_impl); . let value = attr.and_then(|a| a.value_str()); . if let Some(value) = value { . debug!( . "filter_reservation_impls: \ . reservation impl ambiguity on {:?}", -- line 1227 ---------------------------------------- -- line 1232 ---------------------------------------- . message: value.to_string(), . }, . ); . } . } . return Ok(None); . } . } 98,784 ( 0.00%) Ok(Some(candidate)) . } . . fn is_knowable<'o>(&mut self, stack: &TraitObligationStack<'o, 'tcx>) -> Option { . debug!("is_knowable(intercrate={:?})", self.intercrate); . 61,941 ( 0.00%) if !self.intercrate || stack.obligation.polarity() == ty::ImplPolarity::Negative { . return None; . } . . let obligation = &stack.obligation; 12 ( 0.00%) let predicate = self.infcx().resolve_vars_if_possible(obligation.predicate); . . // Okay to skip binder because of the nature of the . // trait-ref-is-knowable check, which does not care about . // bound regions. . let trait_ref = predicate.skip_binder().trait_ref; . 12 ( 0.00%) coherence::trait_ref_is_knowable(self.tcx(), trait_ref) . } . . /// Returns `true` if the global caches can be used. . fn can_use_global_caches(&self, param_env: ty::ParamEnv<'tcx>) -> bool { . // If there are any inference variables in the `ParamEnv`, then we . // always use a cache local to this particular scope. Otherwise, we . // switch to a global cache. . if param_env.needs_infer() { -- line 1266 ---------------------------------------- -- line 1286 ---------------------------------------- . &mut self, . mut param_env: ty::ParamEnv<'tcx>, . cache_fresh_trait_pred: ty::PolyTraitPredicate<'tcx>, . ) -> Option>> { . // Neither the global nor local cache is aware of intercrate . // mode, so don't do any caching. In particular, we might . // re-use the same `InferCtxt` with both an intercrate . // and non-intercrate `SelectionContext` 255,838 ( 0.00%) if self.intercrate { 4 ( 0.00%) return None; . } . let tcx = self.tcx(); . let mut pred = cache_fresh_trait_pred.skip_binder(); 255,830 ( 0.00%) pred.remap_constness(tcx, &mut param_env); . 127,915 ( 0.00%) if self.can_use_global_caches(param_env) { 1,266,970 ( 0.00%) if let Some(res) = tcx.selection_cache.get(¶m_env.and(pred), tcx) { 1,394,575 ( 0.00%) return Some(res); . } . } 225,822 ( 0.00%) self.infcx.selection_cache.get(¶m_env.and(pred), tcx) . } . . /// Determines whether can we safely cache the result . /// of selecting an obligation. This is almost always `true`, . /// except when dealing with certain `ParamCandidate`s. . /// . /// Ordinarily, a `ParamCandidate` will contain no inference variables, . /// since it was usually produced directly from a `DefId`. However, -- line 1314 ---------------------------------------- -- line 1325 ---------------------------------------- . fn can_cache_candidate( . &self, . result: &SelectionResult<'tcx, SelectionCandidate<'tcx>>, . ) -> bool { . // Neither the global nor local cache is aware of intercrate . // mode, so don't do any caching. In particular, we might . // re-use the same `InferCtxt` with both an intercrate . // and non-intercrate `SelectionContext` 41,286 ( 0.00%) if self.intercrate { . return false; . } 61,917 ( 0.00%) match result { . Ok(Some(SelectionCandidate::ParamCandidate(trait_ref))) => !trait_ref.needs_infer(), . _ => true, . } . } . . fn insert_candidate_cache( . &mut self, . mut param_env: ty::ParamEnv<'tcx>, . cache_fresh_trait_pred: ty::PolyTraitPredicate<'tcx>, . dep_node: DepNodeIndex, . candidate: SelectionResult<'tcx, SelectionCandidate<'tcx>>, . ) { . let tcx = self.tcx(); . let mut pred = cache_fresh_trait_pred.skip_binder(); . 41,286 ( 0.00%) pred.remap_constness(tcx, &mut param_env); . . if !self.can_cache_candidate(&candidate) { . debug!(?pred, ?candidate, "insert_candidate_cache - candidate is not cacheable"); . return; . } . 20,607 ( 0.00%) if self.can_use_global_caches(param_env) { 45,980 ( 0.00%) if let Err(Overflow) = candidate { . // Don't cache overflow globally; we only produce this in certain modes. . } else if !pred.needs_infer() { 77,688 ( 0.00%) if !candidate.needs_infer() { . debug!(?pred, ?candidate, "insert_candidate_cache global"); . // This may overwrite the cache with the same value. 524,394 ( 0.00%) tcx.selection_cache.insert(param_env.and(pred), dep_node, candidate); . return; . } . } . } . . debug!(?pred, ?candidate, "insert_candidate_cache local"); 27,255 ( 0.00%) self.infcx.selection_cache.insert(param_env.and(pred), dep_node, candidate); . } . . /// Matches a predicate against the bounds of its self type. . /// . /// Given an obligation like `::Bar: Baz` where the self type is . /// a projection, look at the bounds of `T::Bar`, see if we can find a . /// `Baz` bound. We return indexes into the list returned by . /// `tcx.item_bounds` for any applicable bounds. 162 ( 0.00%) fn match_projection_obligation_against_definition_bounds( . &mut self, . obligation: &TraitObligation<'tcx>, . ) -> smallvec::SmallVec<[usize; 2]> { 234 ( 0.00%) let poly_trait_predicate = self.infcx().resolve_vars_if_possible(obligation.predicate); . let placeholder_trait_predicate = 306 ( 0.00%) self.infcx().replace_bound_vars_with_placeholders(poly_trait_predicate); . debug!( . ?placeholder_trait_predicate, . "match_projection_obligation_against_definition_bounds" . ); . 18 ( 0.00%) let tcx = self.infcx.tcx; 114 ( 0.00%) let (def_id, substs) = match *placeholder_trait_predicate.trait_ref.self_ty().kind() { 45 ( 0.00%) ty::Projection(ref data) => (data.item_def_id, data.substs), 15 ( 0.00%) ty::Opaque(def_id, substs) => (def_id, substs), . _ => { . span_bug!( . obligation.cause.span, . "match_projection_obligation_against_definition_bounds() called \ . but self-ty is not a projection: {:?}", . placeholder_trait_predicate.trait_ref.self_ty() . ); . } -- line 1405 ---------------------------------------- -- line 1411 ---------------------------------------- . // unnecessary ambiguity. . let mut distinct_normalized_bounds = FxHashSet::default(); . . let matching_bounds = bounds . .iter() . .enumerate() . .filter_map(|(idx, bound)| { . let bound_predicate = bound.kind(); 150 ( 0.00%) if let ty::PredicateKind::Trait(pred) = bound_predicate.skip_binder() { . let bound = bound_predicate.rebind(pred.trait_ref); 630 ( 0.00%) if self.infcx.probe(|_| { 246 ( 0.00%) match self.match_normalize_trait_ref( . obligation, 168 ( 0.00%) bound, 168 ( 0.00%) placeholder_trait_predicate.trait_ref, . ) { . Ok(None) => true, . Ok(Some(normalized_trait)) . if distinct_normalized_bounds.insert(normalized_trait) => . { . true . } . _ => false, -- line 1433 ---------------------------------------- -- line 1437 ---------------------------------------- . } . } . None . }) . .collect(); . . debug!(?matching_bounds, "match_projection_obligation_against_definition_bounds"); . matching_bounds 162 ( 0.00%) } . . /// Equates the trait in `obligation` with trait bound. If the two traits . /// can be equated and the normalized trait bound doesn't contain inference . /// variables or placeholders, the normalized bound is returned. 819 ( 0.00%) fn match_normalize_trait_ref( . &mut self, . obligation: &TraitObligation<'tcx>, . trait_bound: ty::PolyTraitRef<'tcx>, . placeholder_trait_ref: ty::TraitRef<'tcx>, . ) -> Result>, ()> { . debug_assert!(!placeholder_trait_ref.has_escaping_bound_vars()); 229 ( 0.00%) if placeholder_trait_ref.def_id != trait_bound.def_id() { . // Avoid unnecessary normalization 86 ( 0.00%) return Err(()); . } . 240 ( 0.00%) let Normalized { value: trait_bound, obligations: _ } = ensure_sufficient_stack(|| { . project::normalize_with_depth( . self, 20 ( 0.00%) obligation.param_env, . obligation.cause.clone(), 60 ( 0.00%) obligation.recursion_depth + 1, 80 ( 0.00%) trait_bound, . ) . }); 60 ( 0.00%) self.infcx 40 ( 0.00%) .at(&obligation.cause, obligation.param_env) . .sup(ty::Binder::dummy(placeholder_trait_ref), trait_bound) . .map(|InferOk { obligations: _, value: () }| { . // This method is called within a probe, so we can't have . // inference variables and placeholders escape. . if !trait_bound.needs_infer() && !trait_bound.has_placeholders() { 80 ( 0.00%) Some(trait_bound) . } else { . None . } . }) . .map_err(|_| ()) 567 ( 0.00%) } . . fn evaluate_where_clause<'o>( . &mut self, . stack: &TraitObligationStack<'o, 'tcx>, . where_clause_trait_ref: ty::PolyTraitRef<'tcx>, . ) -> Result { . self.evaluation_probe(|this| { 20,306 ( 0.00%) match this.match_where_clause_trait_ref(stack.obligation, where_clause_trait_ref) { 3,752 ( 0.00%) Ok(obligations) => this.evaluate_predicates_recursively(stack.list(), obligations), . Err(()) => Ok(EvaluatedToErr), . } . }) . } . 459 ( 0.00%) pub(super) fn match_projection_projections( . &mut self, . obligation: &ProjectionTyObligation<'tcx>, . env_predicate: PolyProjectionPredicate<'tcx>, . potentially_unnormalized_candidates: bool, . ) -> bool { . let mut nested_obligations = Vec::new(); 255 ( 0.00%) let (infer_predicate, _) = self.infcx.replace_bound_vars_with_fresh_vars( 153 ( 0.00%) obligation.cause.span, . LateBoundRegionConversionTime::HigherRankedType, . env_predicate, . ); 102 ( 0.00%) let infer_projection = if potentially_unnormalized_candidates { . ensure_sufficient_stack(|| { . project::normalize_with_depth_to( . self, . obligation.param_env, . obligation.cause.clone(), . obligation.recursion_depth + 1, . infer_predicate.projection_ty, . &mut nested_obligations, . ) . }) . } else { 102 ( 0.00%) infer_predicate.projection_ty . }; . 51 ( 0.00%) self.infcx 102 ( 0.00%) .at(&obligation.cause, obligation.param_env) 102 ( 0.00%) .sup(obligation.predicate, infer_projection) 354 ( 0.00%) .map_or(false, |InferOk { obligations, value: () }| { . self.evaluate_predicates_recursively( . TraitObligationStackList::empty(&ProvisionalEvaluationCache::default()), . nested_obligations.into_iter().chain(obligations), . ) 66 ( 0.00%) .map_or(false, |res| res.may_apply()) . }) 459 ( 0.00%) } . . /////////////////////////////////////////////////////////////////////////// . // WINNOW . // . // Winnowing is the process of attempting to resolve ambiguity by . // probing further. During the winnowing process, we unify all . // type variables and then we also attempt to evaluate recursive . // bounds to see if they are satisfied. -- line 1544 ---------------------------------------- -- line 1550 ---------------------------------------- . /// See the comment for "SelectionCandidate" for more details. . fn candidate_should_be_dropped_in_favor_of( . &mut self, . sized_predicate: bool, . victim: &EvaluatedCandidate<'tcx>, . other: &EvaluatedCandidate<'tcx>, . needs_infer: bool, . ) -> bool { 2,429 ( 0.00%) if victim.candidate == other.candidate { . return true; . } . . // Check if a bound would previously have been removed when normalizing . // the param_env so that it can be given the lowest priority. See . // #50825 for the motivation for this. . let is_global = |cand: &ty::PolyTraitPredicate<'tcx>| { . cand.is_global() && !cand.has_late_bound_regions() . }; . . // (*) Prefer `BuiltinCandidate { has_nested: false }`, `PointeeCandidate`, . // `DiscriminantKindCandidate`, and `ConstDropCandidate` to anything else. . // . // This is a fix for #53123 and prevents winnowing from accidentally extending the . // lifetime of a variable. 43,722 ( 0.00%) match (&other.candidate, &victim.candidate) { . (_, AutoImplCandidate(..)) | (AutoImplCandidate(..), _) => { . bug!( . "default implementations shouldn't be recorded \ . when there are other valid candidates" . ); . } . . // (*) -- line 1582 ---------------------------------------- -- line 1674 ---------------------------------------- . } . (ObjectCandidate(_), ProjectionCandidate(_)) . | (ProjectionCandidate(_), ObjectCandidate(_)) => { . bug!("Have both object and projection candidate") . } . . // Arbitrarily give projection and object candidates priority. . ( 4,858 ( 0.00%) ObjectCandidate(_) | ProjectionCandidate(_), . ImplCandidate(..) . | ClosureCandidate . | GeneratorCandidate . | FnPointerCandidate { .. } . | BuiltinObjectCandidate . | BuiltinUnsizeCandidate . | TraitUpcastingUnsizeCandidate(_) . | BuiltinCandidate { .. } -- line 1690 ---------------------------------------- -- line 1696 ---------------------------------------- . | ClosureCandidate . | GeneratorCandidate . | FnPointerCandidate { .. } . | BuiltinObjectCandidate . | BuiltinUnsizeCandidate . | TraitUpcastingUnsizeCandidate(_) . | BuiltinCandidate { .. } . | TraitAliasCandidate(..), 9,716 ( 0.00%) ObjectCandidate(_) | ProjectionCandidate(_), . ) => false, . 24,290 ( 0.00%) (&ImplCandidate(other_def), &ImplCandidate(victim_def)) => { . // See if we can toss out `victim` based on specialization. . // This requires us to know *for sure* that the `other` impl applies . // i.e., `EvaluatedToOk`. . // . // FIXME(@lcnr): Using `modulo_regions` here seems kind of scary . // to me but is required for `std` to compile, so I didn't change it . // for now. . let tcx = self.tcx(); 9,716 ( 0.00%) if other.evaluation.must_apply_modulo_regions() { 19,200 ( 0.00%) if tcx.specializes((other_def, victim_def)) { . return true; . } . } . 11,905 ( 0.00%) if other.evaluation.must_apply_considering_regions() { 9,212 ( 0.00%) match tcx.impls_are_allowed_to_overlap(other_def, victim_def) { . Some(ty::ImplOverlapKind::Permitted { marker: true }) => { . // Subtle: If the predicate we are evaluating has inference . // variables, do *not* allow discarding candidates due to . // marker trait impls. . // . // Without this restriction, we could end up accidentally . // constrainting inference variables based on an arbitrarily . // chosen trait impl. -- line 1731 ---------------------------------------- -- line 1790 ---------------------------------------- . | BuiltinUnsizeCandidate . | TraitUpcastingUnsizeCandidate(_) . | BuiltinCandidate { has_nested: true } . | TraitAliasCandidate(..), . ) => false, . } . } . 84,380 ( 0.00%) fn sized_conditions( . &mut self, . obligation: &TraitObligation<'tcx>, . ) -> BuiltinImplConditions<'tcx> { . use self::BuiltinImplConditions::{Ambiguous, None, Where}; . . // NOTE: binder moved to (*) 25,314 ( 0.00%) let self_ty = self.infcx.shallow_resolve(obligation.predicate.skip_binder().self_ty()); . 42,202 ( 0.00%) match self_ty.kind() { . ty::Infer(ty::IntVar(_) | ty::FloatVar(_)) . | ty::Uint(_) . | ty::Int(_) . | ty::Bool . | ty::Float(_) . | ty::FnDef(..) . | ty::FnPtr(_) . | ty::RawPtr(..) -- line 1815 ---------------------------------------- -- line 1817 ---------------------------------------- . | ty::Ref(..) . | ty::Generator(..) . | ty::GeneratorWitness(..) . | ty::Array(..) . | ty::Closure(..) . | ty::Never . | ty::Error(_) => { . // safe for everything 1,139 ( 0.00%) Where(ty::Binder::dummy(Vec::new())) . } . . ty::Str | ty::Slice(_) | ty::Dynamic(..) | ty::Foreign(..) => None, . . ty::Tuple(tys) => Where( . obligation . .predicate 9,640 ( 0.00%) .rebind(tys.last().into_iter().map(|k| k.expect_ty()).collect()), . ), . . ty::Adt(def, substs) => { 4,248 ( 0.00%) let sized_crit = def.sized_constraint(self.tcx()); . // (*) binder moved here 10,620 ( 0.00%) Where( . obligation.predicate.rebind({ 2,124 ( 0.00%) sized_crit.iter().map(|ty| ty.subst(self.tcx(), substs)).collect() . }), . ) . } . . ty::Projection(_) | ty::Param(_) | ty::Opaque(..) => None, . ty::Infer(ty::TyVar(_)) => Ambiguous, . . ty::Placeholder(..) . | ty::Bound(..) . | ty::Infer(ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => { . bug!("asked to assemble builtin bounds of unexpected type: {:?}", self_ty); . } . } 67,504 ( 0.00%) } . 50,592 ( 0.00%) fn copy_clone_conditions( . &mut self, . obligation: &TraitObligation<'tcx>, . ) -> BuiltinImplConditions<'tcx> { . // NOTE: binder moved to (*) 12,648 ( 0.00%) let self_ty = self.infcx.shallow_resolve(obligation.predicate.skip_binder().self_ty()); . . use self::BuiltinImplConditions::{Ambiguous, None, Where}; . 32,104 ( 0.00%) match *self_ty.kind() { . ty::Infer(ty::IntVar(_)) . | ty::Infer(ty::FloatVar(_)) . | ty::FnDef(..) . | ty::FnPtr(_) 3,216 ( 0.00%) | ty::Error(_) => Where(ty::Binder::dummy(Vec::new())), . . ty::Uint(_) . | ty::Int(_) . | ty::Bool . | ty::Float(_) . | ty::Char . | ty::RawPtr(..) . | ty::Never -- line 1879 ---------------------------------------- -- line 1886 ---------------------------------------- . ty::Dynamic(..) . | ty::Str . | ty::Slice(..) . | ty::Generator(..) . | ty::GeneratorWitness(..) . | ty::Foreign(..) . | ty::Ref(_, _, hir::Mutability::Mut) => None, . 452 ( 0.00%) ty::Tuple(tys) => { . // (*) binder moved here 2,745 ( 0.00%) Where(obligation.predicate.rebind(tys.iter().map(|k| k.expect_ty()).collect())) . } . 928 ( 0.00%) ty::Closure(_, substs) => { . // (*) binder moved here 2,784 ( 0.00%) let ty = self.infcx.shallow_resolve(substs.as_closure().tupled_upvars_ty()); 1,856 ( 0.00%) if let ty::Infer(ty::TyVar(_)) = ty.kind() { . // Not yet resolved. . Ambiguous . } else { 6,496 ( 0.00%) Where(obligation.predicate.rebind(substs.as_closure().upvar_tys().collect())) . } . } . . ty::Adt(..) | ty::Projection(..) | ty::Param(..) | ty::Opaque(..) => { . // Fallback to whatever user-defined impls exist in this case. . None . } . -- line 1914 ---------------------------------------- -- line 1920 ---------------------------------------- . } . . ty::Placeholder(..) . | ty::Bound(..) . | ty::Infer(ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => { . bug!("asked to assemble builtin bounds of unexpected type: {:?}", self_ty); . } . } 37,944 ( 0.00%) } . . /// For default impls, we need to break apart a type into its . /// "constituent types" -- meaning, the types that it contains. . /// . /// Here are some (simple) examples: . /// . /// ``` . /// (i32, u32) -> [i32, u32] -- line 1936 ---------------------------------------- -- line 1937 ---------------------------------------- . /// Foo where struct Foo { x: i32, y: u32 } -> [i32, u32] . /// Bar where struct Bar { x: T, y: u32 } -> [i32, u32] . /// Zed where enum Zed { A(T), B(u32) } -> [i32, u32] . /// ``` . fn constituent_types_for_ty( . &self, . t: ty::Binder<'tcx, Ty<'tcx>>, . ) -> ty::Binder<'tcx, Vec>> { 60 ( 0.00%) match *t.skip_binder().kind() { . ty::Uint(_) . | ty::Int(_) . | ty::Bool . | ty::Float(_) . | ty::FnDef(..) . | ty::FnPtr(_) . | ty::Str . | ty::Error(_) -- line 1953 ---------------------------------------- -- line 1968 ---------------------------------------- . ty::RawPtr(ty::TypeAndMut { ty: element_ty, .. }) | ty::Ref(_, element_ty, _) => { . t.rebind(vec![element_ty]) . } . . ty::Array(element_ty, _) | ty::Slice(element_ty) => t.rebind(vec![element_ty]), . . ty::Tuple(ref tys) => { . // (T1, ..., Tn) -- meets any bound that all of T1...Tn meet 3 ( 0.00%) t.rebind(tys.iter().map(|k| k.expect_ty()).collect()) . } . . ty::Closure(_, ref substs) => { . let ty = self.infcx.shallow_resolve(substs.as_closure().tupled_upvars_ty()); . t.rebind(vec![ty]) . } . . ty::Generator(_, ref substs, _) => { -- line 1984 ---------------------------------------- -- line 1988 ---------------------------------------- . } . . ty::GeneratorWitness(types) => { . debug_assert!(!types.has_escaping_bound_vars()); . types.map_bound(|types| types.to_vec()) . } . . // For `PhantomData`, we pass `T`. 10 ( 0.00%) ty::Adt(def, substs) if def.is_phantom_data() => t.rebind(substs.types().collect()), . 5 ( 0.00%) ty::Adt(def, substs) => { 17 ( 0.00%) t.rebind(def.all_fields().map(|f| f.ty(self.tcx(), substs)).collect()) . } . . ty::Opaque(def_id, substs) => { . // We can resolve the `impl Trait` to its concrete type, . // which enforces a DAG between the functions requiring . // the auto trait bounds in question. . t.rebind(vec![self.tcx().type_of(def_id).subst(self.tcx(), substs)]) . } . } . } . 60,528 ( 0.00%) fn collect_predicates_for_types( . &mut self, . param_env: ty::ParamEnv<'tcx>, . cause: ObligationCause<'tcx>, . recursion_depth: usize, . trait_def_id: DefId, . types: ty::Binder<'tcx, Vec>>, . ) -> Vec> { . // Because the types were potentially derived from -- line 2019 ---------------------------------------- -- line 2030 ---------------------------------------- . // 2. Produce something like `&'0 i32 : Copy` . // 3. Re-bind the regions back to `for<'a> &'a i32 : Copy` . . types . .as_ref() . .skip_binder() // binder moved -\ . .iter() . .flat_map(|ty| { 16,179 ( 0.00%) let ty: ty::Binder<'tcx, Ty<'tcx>> = types.rebind(ty); // <----/ . 64,716 ( 0.00%) self.infcx.commit_unconditionally(|_| { 16,179 ( 0.00%) let placeholder_ty = self.infcx.replace_bound_vars_with_placeholders(ty); 26,965 ( 0.00%) let Normalized { value: normalized_ty, mut obligations } = 53,930 ( 0.00%) ensure_sufficient_stack(|| { . project::normalize_with_depth( . self, 5,393 ( 0.00%) param_env, . cause.clone(), 5,393 ( 0.00%) recursion_depth, 5,393 ( 0.00%) placeholder_ty, . ) . }); 59,323 ( 0.00%) let placeholder_obligation = predicate_for_trait_def( . self.tcx(), 5,393 ( 0.00%) param_env, . cause.clone(), 10,786 ( 0.00%) trait_def_id, . recursion_depth, . normalized_ty, . &[], . ); 32,358 ( 0.00%) obligations.push(placeholder_obligation); . obligations . }) . }) . .collect() 30,264 ( 0.00%) } . . /////////////////////////////////////////////////////////////////////////// . // Matching . // . // Matching is a common path used for both evaluation and . // confirmation. It basically unifies types that appear in impls . // and traits. This does affect the surrounding environment; . // therefore, when used during evaluation, match routines must be -- line 2074 ---------------------------------------- -- line 2075 ---------------------------------------- . // run inside of a `probe()` so that their side-effects are . // contained. . . fn rematch_impl( . &mut self, . impl_def_id: DefId, . obligation: &TraitObligation<'tcx>, . ) -> Normalized<'tcx, SubstsRef<'tcx>> { 153,265 ( 0.00%) match self.match_impl(impl_def_id, obligation) { 122,612 ( 0.00%) Ok(substs) => substs, . Err(()) => { . bug!( . "Impl {:?} was matchable against {:?} but now is not", . impl_def_id, . obligation . ); . } . } . } . 945,269 ( 0.00%) #[tracing::instrument(level = "debug", skip(self))] . fn match_impl( . &mut self, . impl_def_id: DefId, . obligation: &TraitObligation<'tcx>, . ) -> Result>, ()> { . let impl_trait_ref = self.tcx().impl_trait_ref(impl_def_id).unwrap(); . . // Before we create the substitutions and everything, first . // consider a "quick reject". This avoids creating more types . // and so forth that we need to. . if self.fast_reject_trait_refs(obligation, &impl_trait_ref) { 7,020 ( 0.00%) return Err(()); . } . . let placeholder_obligation = 323,687 ( 0.00%) self.infcx().replace_bound_vars_with_placeholders(obligation.predicate); 138,723 ( 0.00%) let placeholder_obligation_trait_ref = placeholder_obligation.trait_ref; . 231,205 ( 0.00%) let impl_substs = self.infcx.fresh_substs_for_item(obligation.cause.span, impl_def_id); . 92,482 ( 0.00%) let impl_trait_ref = impl_trait_ref.subst(self.tcx(), impl_substs); . . debug!(?impl_trait_ref); . 277,446 ( 0.00%) let Normalized { value: impl_trait_ref, obligations: mut nested_obligations } = 323,687 ( 0.00%) ensure_sufficient_stack(|| { . project::normalize_with_depth( . self, 46,241 ( 0.00%) obligation.param_env, . obligation.cause.clone(), 138,723 ( 0.00%) obligation.recursion_depth + 1, 92,482 ( 0.00%) impl_trait_ref, . ) . }); . . debug!(?impl_trait_ref, ?placeholder_obligation_trait_ref); . . let cause = ObligationCause::new( 46,241 ( 0.00%) obligation.cause.span, 92,482 ( 0.00%) obligation.cause.body_id, 416,169 ( 0.00%) ObligationCauseCode::MatchImpl(obligation.cause.clone(), impl_def_id), . ); . 92,482 ( 0.00%) let InferOk { obligations, .. } = self . .infcx 46,241 ( 0.00%) .at(&cause, obligation.param_env) . .eq(placeholder_obligation_trait_ref, impl_trait_ref) . .map_err(|e| debug!("match_impl: failed eq_trait_refs due to `{}`", e))?; . nested_obligations.extend(obligations); . 121,413 ( 0.00%) if !self.intercrate . && self.tcx().impl_polarity(impl_def_id) == ty::ImplPolarity::Reservation . { . debug!("match_impl: reservation impls only apply in intercrate mode"); . return Err(()); . } . . debug!(?impl_substs, ?nested_obligations, "match_impl: success"); 242,802 ( 0.00%) Ok(Normalized { value: impl_substs, obligations: nested_obligations }) . } . . fn fast_reject_trait_refs( . &mut self, . obligation: &TraitObligation<'_>, . impl_trait_ref: &ty::TraitRef<'_>, . ) -> bool { . // We can avoid creating type variables and doing the full . // substitution if we find that any of the input types, when . // simplified, do not match. . 149,253 ( 0.00%) iter::zip(obligation.predicate.skip_binder().trait_ref.substs, impl_trait_ref.substs).any( . |(obligation_arg, impl_arg)| { 456,340 ( 0.00%) match (obligation_arg.unpack(), impl_arg.unpack()) { . (GenericArgKind::Type(obligation_ty), GenericArgKind::Type(impl_ty)) => { . // Note, we simplify parameters for the obligation but not the . // impl so that we do not reject a blanket impl but do reject . // more concrete impls if we're searching for `T: Trait`. 595,728 ( 0.00%) let simplified_obligation_ty = fast_reject::simplify_type( . self.tcx(), . obligation_ty, . SimplifyParams::Yes, . StripReferences::No, . ); 446,796 ( 0.00%) let simplified_impl_ty = fast_reject::simplify_type( . self.tcx(), . impl_ty, . SimplifyParams::No, . StripReferences::No, . ); . 223,398 ( 0.00%) simplified_obligation_ty.is_some() . && simplified_impl_ty.is_some() . && simplified_obligation_ty != simplified_impl_ty . } . (GenericArgKind::Lifetime(_), GenericArgKind::Lifetime(_)) => { . // Lifetimes can never cause a rejection. . false . } . (GenericArgKind::Const(_), GenericArgKind::Const(_)) => { -- line 2194 ---------------------------------------- -- line 2201 ---------------------------------------- . } . }, . ) . } . . /// Normalize `where_clause_trait_ref` and try to match it against . /// `obligation`. If successful, return any predicates that . /// result from the normalization. 16,614 ( 0.00%) fn match_where_clause_trait_ref( . &mut self, . obligation: &TraitObligation<'tcx>, . where_clause_trait_ref: ty::PolyTraitRef<'tcx>, . ) -> Result>, ()> { . self.match_poly_trait_ref(obligation, where_clause_trait_ref) 14,768 ( 0.00%) } . . /// Returns `Ok` if `poly_trait_ref` being true implies that the . /// obligation is satisfied. . #[instrument(skip(self), level = "debug")] . fn match_poly_trait_ref( . &mut self, . obligation: &TraitObligation<'tcx>, . poly_trait_ref: ty::PolyTraitRef<'tcx>, . ) -> Result>, ()> { 2,969 ( 0.00%) self.infcx 1,846 ( 0.00%) .at(&obligation.cause, obligation.param_env) 8,907 ( 0.00%) .sup(obligation.predicate.to_poly_trait_ref(), poly_trait_ref) . .map(|InferOk { obligations, .. }| obligations) . .map_err(|_| ()) . } . . /////////////////////////////////////////////////////////////////////////// . // Miscellany . . fn match_fresh_trait_refs( . &self, . previous: ty::PolyTraitPredicate<'tcx>, . current: ty::PolyTraitPredicate<'tcx>, . param_env: ty::ParamEnv<'tcx>, . ) -> bool { 213 ( 0.00%) let mut matcher = ty::_match::Match::new(self.tcx(), param_env); . matcher.relate(previous, current).is_ok() . } . . fn push_stack<'o>( . &mut self, . previous_stack: TraitObligationStackList<'o, 'tcx>, . obligation: &'o TraitObligation<'tcx>, . ) -> TraitObligationStack<'o, 'tcx> { 852,582 ( 0.00%) let fresh_trait_pred = obligation.predicate.fold_with(&mut self.freshener); . . let dfn = previous_stack.cache.next_dfn(); 37,734 ( 0.00%) let depth = previous_stack.depth() + 1; 1,165,671 ( 0.00%) TraitObligationStack { . obligation, 697,907 ( 0.00%) fresh_trait_pred, . reached_depth: Cell::new(depth), . previous: previous_stack, . dfn, . depth, . } . } . . #[instrument(skip(self), level = "debug")] . fn closure_trait_ref_unnormalized( . &mut self, . obligation: &TraitObligation<'tcx>, . substs: SubstsRef<'tcx>, . ) -> ty::PolyTraitRef<'tcx> { 6,435 ( 0.00%) let closure_sig = substs.as_closure().sig(); . . debug!(?closure_sig); . . // (1) Feels icky to skip the binder here, but OTOH we know . // that the self-type is an unboxed closure type and hence is . // in fact unparameterized (or at least does not reference any . // regions bound in the obligation). Still probably some . // refactoring could make this nicer. 21,450 ( 0.00%) closure_trait_ref_and_return_type( . self.tcx(), 12,870 ( 0.00%) obligation.predicate.def_id(), 2,145 ( 0.00%) obligation.predicate.skip_binder().self_ty(), // (1) 8,580 ( 0.00%) closure_sig, . util::TupleArgumentsFlag::No, . ) . .map_bound(|(trait_ref, _)| trait_ref) . } . . fn generator_trait_ref_unnormalized( . &mut self, . obligation: &TraitObligation<'tcx>, -- line 2291 ---------------------------------------- -- line 2307 ---------------------------------------- . ) . .map_bound(|(trait_ref, ..)| trait_ref) . } . . /// Returns the obligations that are implied by instantiating an . /// impl or trait. The obligations are substituted and fully . /// normalized. This is used when confirming an impl or default . /// impl. 705,295 ( 0.00%) #[tracing::instrument(level = "debug", skip(self, cause, param_env))] . fn impl_or_trait_obligations( . &mut self, . cause: ObligationCause<'tcx>, . recursion_depth: usize, . param_env: ty::ParamEnv<'tcx>, . def_id: DefId, // of impl or trait . substs: SubstsRef<'tcx>, // for impl or trait . ) -> Vec> { -- line 2323 ---------------------------------------- -- line 2334 ---------------------------------------- . // V: Iterator, V: Sized, . // ::Item: Copy . // When we substitute, say, `V => IntoIter, U => $0`, the last . // obligation will normalize to `<$0 as Iterator>::Item = $1` and . // `$1: Copy`, so we must ensure the obligations are emitted in . // that order. . let predicates = tcx.predicates_of(def_id); . debug!(?predicates); 30,665 ( 0.00%) assert_eq!(predicates.parent, None); 91,995 ( 0.00%) let mut obligations = Vec::with_capacity(predicates.predicates.len()); . for (predicate, _) in predicates.predicates { . debug!(?predicate); 246,325 ( 0.00%) let predicate = normalize_with_depth_to( . self, . param_env, . cause.clone(), . recursion_depth, 49,265 ( 0.00%) predicate.subst(tcx, substs), . &mut obligations, . ); 492,650 ( 0.00%) obligations.push(Obligation { . cause: cause.clone(), . recursion_depth, . param_env, . predicate, . }); . } . . // We are performing deduplication here to avoid exponential blowups -- line 2362 ---------------------------------------- -- line 2363 ---------------------------------------- . // (#38528) from happening, but the real cause of the duplication is . // unknown. What we know is that the deduplication avoids exponential . // amount of predicates being propagated when processing deeply nested . // types. . // . // This code is hot enough that it's worth avoiding the allocation . // required for the FxHashSet when possible. Special-casing lengths 0, . // 1 and 2 covers roughly 75-80% of the cases. 68,220 ( 0.00%) if obligations.len() <= 1 { . // No possibility of duplicates. 14,999 ( 0.00%) } else if obligations.len() == 2 { . // Only two elements. Drop the second if they are equal. 3 ( 0.00%) if obligations[0] == obligations[1] { 9 ( 0.00%) obligations.truncate(1); . } . } else { . // Three or more elements. Use a general deduplication process. . let mut seen = FxHashSet::default(); 6,007 ( 0.00%) obligations.retain(|i| seen.insert(i.clone())); . } . 122,660 ( 0.00%) obligations . } . } . . trait TraitObligationExt<'tcx> { . fn derived_cause( . &self, . variant: fn(DerivedObligationCause<'tcx>) -> ObligationCauseCode<'tcx>, . ) -> ObligationCause<'tcx>; -- line 2392 ---------------------------------------- -- line 2408 ---------------------------------------- . */ . . let obligation = self; . . // NOTE(flaper87): As of now, it keeps track of the whole error . // chain. Ideally, we should have a way to configure this either . // by using -Z verbose or just a CLI argument. . let derived_cause = DerivedObligationCause { 142,876 ( 0.00%) parent_trait_pred: obligation.predicate, 66,396 ( 0.00%) parent_code: obligation.cause.clone_code(), . }; . let derived_code = variant(derived_cause); 423,562 ( 0.00%) ObligationCause::new(obligation.cause.span, obligation.cause.body_id, derived_code) . } . } . . impl<'o, 'tcx> TraitObligationStack<'o, 'tcx> { . fn list(&'o self) -> TraitObligationStackList<'o, 'tcx> { . TraitObligationStackList::with(self) . } . . fn cache(&self) -> &'o ProvisionalEvaluationCache<'tcx> { 36,474 ( 0.00%) self.previous.cache . } . . fn iter(&'o self) -> TraitObligationStackList<'o, 'tcx> { . self.list() . } . . /// Indicates that attempting to evaluate this stack entry . /// required accessing something from the stack at depth `reached_depth`. 16 ( 0.00%) fn update_reached_depth(&self, reached_depth: usize) { 8 ( 0.00%) assert!( 8 ( 0.00%) self.depth >= reached_depth, . "invoked `update_reached_depth` with something under this stack: \ . self.depth={} reached_depth={}", . self.depth, . reached_depth, . ); . debug!(reached_depth, "update_reached_depth"); . let mut p = self; 24 ( 0.00%) while reached_depth < p.depth { . debug!(?p.fresh_trait_pred, "update_reached_depth: marking as cycle participant"); 8 ( 0.00%) p.reached_depth.set(p.reached_depth.get().min(reached_depth)); 8 ( 0.00%) p = p.previous.head.unwrap(); . } 16 ( 0.00%) } . } . . /// The "provisional evaluation cache" is used to store intermediate cache results . /// when solving auto traits. Auto traits are unusual in that they can support . /// cycles. So, for example, a "proof tree" like this would be ok: . /// . /// - `Foo: Send` :- . /// - `Bar: Send` :- -- line 2462 ---------------------------------------- -- line 2540 ---------------------------------------- . /// evaluation. When we create an entry in the evaluation cache using this provisional . /// cache entry (see `on_completion`), we use this `dep_node` to ensure that future reads from . /// the cache will have all of the necessary incr comp dependencies tracked. . dep_node: DepNodeIndex, . } . . impl<'tcx> Default for ProvisionalEvaluationCache<'tcx> { . fn default() -> Self { 157,489 ( 0.00%) Self { dfn: Cell::new(0), map: Default::default() } . } . } . . impl<'tcx> ProvisionalEvaluationCache<'tcx> { . /// Get the next DFN in sequence (basically a counter). . fn next_dfn(&self) -> usize { 18,867 ( 0.00%) let result = self.dfn.get(); 75,468 ( 0.00%) self.dfn.set(result + 1); . result . } . . /// Check the provisional cache for any result for . /// `fresh_trait_ref`. If there is a hit, then you must consider . /// it an access to the stack slots at depth . /// `reached_depth` (from the returned value). . fn get_provisional( -- line 2564 ---------------------------------------- -- line 2663 ---------------------------------------- . fn on_completion( . &self, . dfn: usize, . mut op: impl FnMut(ty::PolyTraitPredicate<'tcx>, EvaluationResult, DepNodeIndex), . ) { . debug!(?dfn, "on_completion"); . . for (fresh_trait_pred, eval) in 76,846 ( 0.00%) self.map.borrow_mut().drain_filter(|_k, eval| eval.from_dfn >= dfn) . { . debug!(?fresh_trait_pred, ?eval, "on_completion"); . . op(fresh_trait_pred, eval.result, eval.dep_node); . } . } . } . -- line 2679 ---------------------------------------- -- line 2692 ---------------------------------------- . TraitObligationStackList { cache: r.cache(), head: Some(r) } . } . . fn head(&self) -> Option<&'o TraitObligationStack<'o, 'tcx>> { . self.head . } . . fn depth(&self) -> usize { 46,483 ( 0.00%) if let Some(head) = self.head { head.depth } else { 0 } . } . } . . impl<'o, 'tcx> Iterator for TraitObligationStackList<'o, 'tcx> { . type Item = &'o TraitObligationStack<'o, 'tcx>; . . fn next(&mut self) -> Option<&'o TraitObligationStack<'o, 'tcx>> { 38,892 ( 0.00%) let o = self.head?; 3,005 ( 0.00%) *self = o.previous; . Some(o) . } . } . . impl<'o, 'tcx> fmt::Debug for TraitObligationStack<'o, 'tcx> { . fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { . write!(f, "TraitObligationStack({:?})", self.obligation) . } -- line 2717 ---------------------------------------- 1,430,505 ( 0.00%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/ena-0.14.0/src/unify/mod.rs -------------------------------------------------------------------------------- Ir -- line 154 ---------------------------------------- . /// Value of a unification key. We implement Tarjan's union-find . /// algorithm: when two keys are unified, one of them is converted . /// into a "redirect" pointing at the other. These redirects form a . /// DAG: the roots of the DAG (nodes that are not redirected) are each . /// associated with a value of type `V` and a rank. The rank is used . /// to keep the DAG relatively balanced, which helps keep the running . /// time of the algorithm under control. For more information, see . /// . 87,862 ( 0.00%) #[derive(PartialEq, Clone, Debug)] . pub struct VarValue { 146,282 ( 0.00%) parent: K, // if equal to self, this is a root 11,852 ( 0.00%) value: K::Value, // value assigned (only relevant to root) 140,410 ( 0.00%) rank: u32, // max depth (only relevant to root) . } . . /// Table of unification keys and their values. You must define a key type K . /// that implements the `UnifyKey` trait. Unification tables can be used in two-modes: . /// . /// - in-place (`UnificationTable>` or `InPlaceUnificationTable`): . /// - This is the standard mutable mode, where the array is modified . /// in place. . /// - To do backtracking, you can employ the `snapshot` and `rollback_to` . /// methods. . /// - persistent (`UnificationTable>` or `PersistentUnificationTable`): . /// - In this mode, we use a persistent vector to store the data, so that . /// cloning the table is an O(1) operation. . /// - This implies that ordinary operations are quite a bit slower though. . /// - Requires the `persistent` feature be selected in your Cargo.toml file. 353,570 ( 0.00%) #[derive(Clone, Debug, Default)] . pub struct UnificationTable { . /// Indicates the current value of each key. . values: S, . } . . pub type UnificationStorage = Vec>; . pub type UnificationTableStorage = UnificationTable, ()>>; . -- line 190 ---------------------------------------- -- line 215 ---------------------------------------- . } . . fn new(parent: K, value: K::Value, rank: u32) -> VarValue { . VarValue { . parent: parent, // this is a root . value: value, . rank: rank, . } 563,959 ( 0.00%) } . . fn redirect(&mut self, to: K) { 96,001 ( 0.00%) self.parent = to; . } . . fn root(&mut self, rank: u32, value: K::Value) { 86,912 ( 0.00%) self.rank = rank; 42,512 ( 0.00%) self.value = value; . } . . fn parent(&self, self_key: K) -> Option { 5,148,249 ( 0.01%) self.if_not_self(self.parent, self_key) . } . . fn if_not_self(&self, key: K, self_key: K) -> Option { . if key == self_key { . None . } else { . Some(key) . } -- line 243 ---------------------------------------- -- line 253 ---------------------------------------- . &'a mut self, . undo_log: L, . ) -> UnificationTable, L>> . where . L: UndoLogs>>, . { . UnificationTable { . values: InPlace { 4 ( 0.00%) values: self.values.values.with_log(undo_log), . }, . } . } . } . . // We can't use V:LatticeValue, much as I would like to, . // because frequently the pattern is that V=Option for some . // other type parameter U, and we have no way to say -- line 269 ---------------------------------------- -- line 311 ---------------------------------------- . pub fn len(&self) -> usize { . self.values.len() . } . } . . impl UnificationTable { . /// Starts a new snapshot. Each snapshot must be either . /// Creates a fresh key with the given value. 865,936 ( 0.00%) pub fn new_key(&mut self, value: S::Value) -> S::Key { . let len = self.values.len(); 1,419,272 ( 0.00%) let key: S::Key = UnifyKey::from_index(len as u32); . self.values.push(VarValue::new_var(key, value)); 568,608 ( 0.00%) debug!("{}: created new key: {:?}", S::tag(), key); . key 1,295,432 ( 0.00%) } . . /// Reserve memory for `num_new_keys` to be created. Does not . /// actually create the new keys; you must then invoke `new_key`. . pub fn reserve(&mut self, num_new_keys: usize) { . self.values.reserve(num_new_keys); . } . . /// Clears all unifications that have been performed, resetting to . /// the initial state. The values of each variable are given by . /// the closure. . pub fn reset_unifications(&mut self, mut value: impl FnMut(S::Key) -> S::Value) { . self.values.reset_unifications(|i| { 59 ( 0.00%) let key = UnifyKey::from_index(i as u32); . let value = value(key); . VarValue::new_var(key, value) . }); . } . . /// Obtains the current value for a particular key. . /// Not for end-users; they can use `probe_value`. . fn value(&self, key: S::Key) -> &VarValue { 26,323,817 ( 0.07%) &self.values[key.index() as usize] . } . . /// Find the root node for `vid`. This uses the standard . /// union-find algorithm with path compression: . /// . . /// . /// NB. This is a building-block operation and you would probably . /// prefer to call `probe` below. . /// . /// This is an always-inlined version of this function for the hot . /// callsites. `uninlined_get_root_key` is the never-inlined version. . #[inline(always)] . fn inlined_get_root_key(&mut self, vid: S::Key) -> S::Key { . let redirect = { 95,739,915 ( 0.25%) match self.value(vid).parent(vid) { . None => return vid, . Some(redirect) => redirect, . } . }; . 34,428,092 ( 0.09%) let root_key: S::Key = self.uninlined_get_root_key(redirect); 124,208 ( 0.00%) if root_key != redirect { . // Path compression 3,210 ( 0.00%) self.update_value(vid, |value| value.parent = root_key); . } . . root_key . } . . // This is a never-inlined version of this function for cold callsites. . // 'inlined_get_root_key` is the always-inlined version. . #[inline(never)] 86,843,075 ( 0.22%) fn uninlined_get_root_key(&mut self, vid: S::Key) -> S::Key { . self.inlined_get_root_key(vid) 86,297,629 ( 0.22%) } . 8,560 ( 0.00%) fn update_value(&mut self, key: S::Key, op: OP) . where . OP: FnOnce(&mut VarValue), . { 466,060 ( 0.00%) self.values.update(key.index() as usize, op); 259,466 ( 0.00%) debug!("Updated variable {:?} to {:?}", key, self.value(key)); 5,350 ( 0.00%) } . . /// Either redirects `node_a` to `node_b` or vice versa, depending . /// on the relative rank. The value associated with the new root . /// will be `new_value`. . /// . /// NB: This is the "union" operation of "union-find". It is . /// really more of a building block. If the values associated with . /// your key are non-trivial, you would probably prefer to call . /// `unify_var_var` below. . fn unify_roots(&mut self, key_a: S::Key, key_b: S::Key, new_value: S::Value) { 55,110 ( 0.00%) debug!("unify(key_a={:?}, key_b={:?})", key_a, key_b); . 81,476 ( 0.00%) let rank_a = self.value(key_a).rank; 246,752 ( 0.00%) let rank_b = self.value(key_b).rank; . if let Some((new_root, redirected)) = S::Key::order_roots( 149,184 ( 0.00%) key_a, . &self.value(key_a).value, 149,184 ( 0.00%) key_b, . &self.value(key_b).value, . ) { . // compute the new rank for the new root that they chose; . // this may not be the optimal choice. . let new_rank = if new_root == key_a { . debug_assert!(redirected == key_b); . if rank_a > rank_b { . rank_a -- line 416 ---------------------------------------- -- line 422 ---------------------------------------- . debug_assert!(redirected == key_a); . if rank_b > rank_a { . rank_b . } else { . rank_a + 1 . } . }; . self.redirect_root(new_rank, redirected, new_root, new_value); 110,220 ( 0.00%) } else if rank_a > rank_b { . // a has greater rank, so a should become b's parent, . // i.e., b should redirect to a. 55,244 ( 0.00%) self.redirect_root(rank_a, key_b, key_a, new_value); 37,878 ( 0.00%) } else if rank_a < rank_b { . // b has greater rank, so a should redirect to b. 25,801 ( 0.00%) self.redirect_root(rank_b, key_a, key_b, new_value); . } else { . // If equal, redirect one to the other and increment the . // other's rank. 129,082 ( 0.00%) self.redirect_root(rank_a + 1, key_a, key_b, new_value); . } . } . . /// Internal method to redirect `old_root_key` (which is currently . /// a root) to a child of `new_root_key` (which will remain a . /// root). The rank and value of `new_root_key` will be updated to . /// `new_rank` and `new_value` respectively. 685,852 ( 0.00%) fn redirect_root( . &mut self, . new_rank: u32, . old_root_key: S::Key, . new_root_key: S::Key, . new_value: S::Value, . ) { . self.update_value(old_root_key, |old_root_value| { . old_root_value.redirect(new_root_key); . }); 135 ( 0.00%) self.update_value(new_root_key, |new_root_value| { 5,382 ( 0.00%) new_root_value.root(new_rank, new_value); . }); 373,172 ( 0.00%) } . } . . /// //////////////////////////////////////////////////////////////////////// . /// Public API . . impl UnificationTable . where . S: UnificationStoreMut, . K: UnifyKey, . V: UnifyValue, . { . /// Unions two keys without the possibility of failure; only . /// applicable when unify values use `NoError` as their error . /// type. 530,473 ( 0.00%) pub fn union(&mut self, a_id: K1, b_id: K2) . where . K1: Into, . K2: Into, . V: UnifyValue, . { . self.unify_var_var(a_id, b_id).unwrap(); 468,876 ( 0.00%) } . . /// Unions a key and a value without the possibility of failure; . /// only applicable when unify values use `NoError` as their error . /// type. 1,265,352 ( 0.00%) pub fn union_value(&mut self, id: K1, value: V) . where . K1: Into, . V: UnifyValue, . { . self.unify_var_value(id, value).unwrap(); 990,796 ( 0.00%) } . . /// Given two keys, indicates whether they have been unioned together. . pub fn unioned(&mut self, a_id: K1, b_id: K2) -> bool . where . K1: Into, . K2: Into, . { . self.find(a_id) == self.find(b_id) -- line 502 ---------------------------------------- -- line 503 ---------------------------------------- . } . . /// Given a key, returns the (current) root key. . pub fn find(&mut self, id: K1) -> K . where . K1: Into, . { . let id = id.into(); 794,109 ( 0.00%) self.uninlined_get_root_key(id) . } . . /// Unions together two variables, merging their values. If . /// merging the values fails, the error is propagated and this . /// method has no effect. 243 ( 0.00%) pub fn unify_var_var(&mut self, a_id: K1, b_id: K2) -> Result<(), V::Error> . where . K1: Into, . K2: Into, . { . let a_id = a_id.into(); . let b_id = b_id.into(); . 187,930 ( 0.00%) let root_a = self.uninlined_get_root_key(a_id); 184,926 ( 0.00%) let root_b = self.uninlined_get_root_key(b_id); . 23,927 ( 0.00%) if root_a == root_b { . return Ok(()); . } . 297,596 ( 0.00%) let combined = V::unify_values(&self.value(root_a).value, &self.value(root_b).value)?; . . Ok(self.unify_roots(root_a, root_b, combined)) 270 ( 0.00%) } . . /// Sets the value of the key `a_id` to `b`, attempting to merge . /// with the previous value. 32,672 ( 0.00%) pub fn unify_var_value(&mut self, a_id: K1, b: V) -> Result<(), V::Error> . where . K1: Into, . { . let a_id = a_id.into(); 207,449 ( 0.00%) let root_a = self.uninlined_get_root_key(a_id); 456,042 ( 0.00%) let value = V::unify_values(&self.value(root_a).value, &b)?; 300,520 ( 0.00%) self.update_value(root_a, |node| node.value = value); . Ok(()) 30,161 ( 0.00%) } . . /// Returns the current value for the given key. If the key has . /// been union'd, this will give the value from the current root. 92,288 ( 0.00%) pub fn probe_value(&mut self, id: K1) -> V . where . K1: Into, . { . self.inlined_probe_value(id) 87,704 ( 0.00%) } . . // An always-inlined version of `probe_value`, for hot callsites. . #[inline(always)] . pub fn inlined_probe_value(&mut self, id: K1) -> V . where . K1: Into, . { . let id = id.into(); . let id = self.inlined_get_root_key(id); 47,789 ( 0.00%) self.value(id).value.clone() . } . } . . /////////////////////////////////////////////////////////////////////////// . . impl UnifyValue for () { . type Error = NoError; . . fn unify_values(_: &(), _: &()) -> Result<(), NoError> { . Ok(()) 35,960 ( 0.00%) } . } . . impl UnifyValue for Option { . type Error = V::Error; . . fn unify_values(a: &Option, b: &Option) -> Result { 17,670 ( 0.00%) match (a, b) { . (&None, &None) => Ok(None), . (&Some(ref v), &None) | (&None, &Some(ref v)) => Ok(Some(v.clone())), . (&Some(ref a), &Some(ref b)) => match V::unify_values(a, b) { . Ok(v) => Ok(Some(v)), . Err(err) => Err(err), . }, . } . } -- line 593 ---------------------------------------- 23,608,199 ( 0.06%) -------------------------------------------------------------------------------- -- 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 { 5,200,700 ( 0.01%) 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> { 29,315 ( 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> { 24,220 ( 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 197 ---------------------------------------- . /// assert_eq!(first, &0); . /// assert_eq!(elements, &[1, 2]); . /// } . /// ``` . #[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_first(&self) -> Option<(&T, &[T])> { 24 ( 0.00%) if let [first, tail @ ..] = self { Some((first, tail)) } else { None } . } . . /// Returns the first and all the rest of the elements of the slice, or `None` if it is empty. . /// . /// # Examples . /// . /// ``` . /// let x = &mut [0, 1, 2]; -- line 213 ---------------------------------------- -- 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])> { 165,677 ( 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> { 1,958,923 ( 0.01%) 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> { 6,284,179 ( 0.02%) 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 { 6,712,388 ( 0.02%) 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 { 29 ( 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) { 247,638 ( 0.00%) let _ = &self[a]; 706,565 ( 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 { 39,992 ( 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]) { 336 ( 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]) { 469,624 ( 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. 33,105 ( 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, . { 5,322 ( 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(); 7,030 ( 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()); 204,020 ( 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; 31,914,599 ( 0.08%) while left < right { 50,427,882 ( 0.13%) 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. 4,307,549 ( 0.01%) 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. 13,202,484 ( 0.03%) if cmp == Less { 28,350,430 ( 0.07%) left = mid + 1; 6,432,027 ( 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); . } . 38,801,626 ( 0.10%) 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, . ); . } . 1,055,054 ( 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! 166,950 ( 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::()) }; 166,950 ( 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), 166,950 ( 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 ---------------------------------------- -- line 3731 ---------------------------------------- . /// let v = [1, 2, 3, 3, 5, 6, 7]; . /// let i = v.partition_point(|&x| x < 5); . /// . /// assert_eq!(i, 4); . /// assert!(v[..i].iter().all(|&x| x < 5)); . /// assert!(v[i..].iter().all(|&x| !(x < 5))); . /// ``` . #[stable(feature = "partition_point", since = "1.52.0")] 2 ( 0.00%) pub fn partition_point

(&self, mut pred: P) -> usize . where . P: FnMut(&T) -> bool, . { . self.binary_search_by(|x| if pred(x) { Less } else { Greater }).unwrap_or_else(|i| i) 4 ( 0.00%) } . . /// Removes the subslice corresponding to the given range . /// and returns a reference to it. . /// . /// Returns `None` and does not modify the slice if the given . /// range is out of bounds. . /// . /// Note that this method only accepts one-sided ranges such as -- line 3752 ---------------------------------------- 24,047,847 ( 0.06%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/ptr/mod.rs -------------------------------------------------------------------------------- Ir -- line 180 ---------------------------------------- . /// assert_eq!(v, &[0.into()]); . /// . /// // Ensure that the last item was dropped. . /// assert!(weak.upgrade().is_none()); . /// ``` . #[stable(feature = "drop_in_place", since = "1.8.0")] . #[lang = "drop_in_place"] . #[allow(unconditional_recursion)] 149,116,717 ( 0.38%) pub unsafe fn drop_in_place(to_drop: *mut T) { . // Code here does not matter - this is replaced by the . // real drop glue by the compiler. . . // SAFETY: see comment above . unsafe { drop_in_place(to_drop) } . } . . /// Creates a null raw pointer. -- line 196 ---------------------------------------- -- line 366 ---------------------------------------- . let mut tmp = MaybeUninit::::uninit(); . . // Perform the swap . // SAFETY: the caller must guarantee that `x` and `y` are . // valid for writes and properly aligned. `tmp` cannot be . // overlapping either `x` or `y` because `tmp` was just allocated . // on the stack as a separate allocated object. . unsafe { 97 ( 0.00%) copy_nonoverlapping(x, tmp.as_mut_ptr(), 1); 97 ( 0.00%) copy(y, x, 1); // `x` and `y` may overlap . copy_nonoverlapping(tmp.as_ptr(), y, 1); . } . } . . /// Swaps `count * size_of::()` bytes between the two regions of memory . /// beginning at `x` and `y`. The two regions must *not* overlap. . /// . /// # Safety -- line 383 ---------------------------------------- -- line 448 ---------------------------------------- . return; . } . } . . // Direct swapping, for the cases not going through the block optimization. . // SAFETY: the caller must guarantee that `x` and `y` are valid . // for writes, properly aligned, and non-overlapping. . unsafe { 6,662 ( 0.00%) let z = read(x); . copy_nonoverlapping(y, x, 1); . write(y, z); . } . } . . #[inline] . #[rustc_const_unstable(feature = "const_swap", issue = "83163")] . const unsafe fn swap_nonoverlapping_bytes(x: *mut u8, y: *mut u8, len: usize) { -- line 464 ---------------------------------------- -- line 693 ---------------------------------------- . let mut tmp = MaybeUninit::::uninit(); . // SAFETY: the caller must guarantee that `src` is valid for reads. . // `src` cannot overlap `tmp` because `tmp` was just allocated on . // the stack as a separate allocated object. . // . // Also, since we just wrote a valid value into `tmp`, it is guaranteed . // to be properly initialized. . unsafe { 4,876,931 ( 0.01%) copy_nonoverlapping(src, tmp.as_mut_ptr(), 1); 24,234,289 ( 0.06%) tmp.assume_init() . } . } . . /// Reads the value from `src` without moving it. This leaves the . /// memory in `src` unchanged. . /// . /// Unlike [`read`], `read_unaligned` works with unaligned pointers. . /// -- line 710 ---------------------------------------- -- line 884 ---------------------------------------- . #[rustc_const_unstable(feature = "const_intrinsic_copy", issue = "80697")] . fn copy_nonoverlapping(src: *const T, dst: *mut T, count: usize); . } . . // SAFETY: the caller must guarantee that `dst` is valid for writes. . // `dst` cannot overlap `src` because the caller has mutable access . // to `dst` while `src` is owned by this function. . unsafe { 303,751,187 ( 0.78%) copy_nonoverlapping(&src as *const T, dst, 1); . intrinsics::forget(src); . } . } . . /// Overwrites a memory location with the given value without reading or . /// dropping the old value. . /// . /// Unlike [`write()`], the pointer may be unaligned. -- line 900 ---------------------------------------- -- line 1206 ---------------------------------------- . if stride == 1 { . // `stride == 1` case can be computed more simply through `-p (mod a)`, but doing so . // inhibits LLVM's ability to select instructions like `lea`. Instead we compute . // . // round_up_to_next_alignment(p, a) - p . // . // which distributes operations around the load-bearing, but pessimizing `and` sufficiently . // for LLVM to be able to utilize the various optimizations it knows about. 83,475 ( 0.00%) return wrapping_sub( 179,902 ( 0.00%) wrapping_add(p as usize, a_minus_one) & wrapping_sub(0, a), . p as usize, . ); . } . . let pmoda = p as usize & a_minus_one; . if pmoda == 0 { . // Already aligned. Yay! . return 0; -- line 1223 ---------------------------------------- -- line 1348 ---------------------------------------- . /// assert!(std::ptr::eq( . /// &wrapper as &dyn Trait as *const dyn Trait as *const u8, . /// &wrapper.member as &dyn Trait as *const dyn Trait as *const u8, . /// )); . /// ``` . #[stable(feature = "ptr_eq", since = "1.17.0")] . #[inline] . pub fn eq(a: *const T, b: *const T) -> bool { 9,367,985 ( 0.02%) a == b . } . . /// Hash a raw pointer. . /// . /// This can be used to hash a `&T` reference (which coerces to `*const T` implicitly) . /// by its address rather than the value it points to . /// (which is what the `Hash for &T` implementation does). . /// -- line 1364 ---------------------------------------- 24,365,417 ( 0.06%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/slice/iter/macros.rs -------------------------------------------------------------------------------- Ir -- line 70 ---------------------------------------- . . impl<'a, T> $name<'a, T> { . // Helper function for creating a slice from the iterator. . #[inline(always)] . fn make_slice(&self) -> &'a [T] { . // SAFETY: the iterator was created from a slice with pointer . // `self.ptr` and length `len!(self)`. This guarantees that all . // the prerequisites for `from_raw_parts` are fulfilled. 166,630 ( 0.00%) unsafe { from_raw_parts(self.ptr.as_ptr(), len!(self)) } . } . . // Helper function for moving the start of the iterator forwards by `offset` elements, . // returning the old start. . // Unsafe because the offset must not exceed `self.len()`. . #[inline(always)] . unsafe fn post_inc_start(&mut self, offset: isize) -> * $raw_mut T { . if mem::size_of::() == 0 { . zst_shrink!(self, offset); . self.ptr.as_ptr() . } else { . let old = self.ptr.as_ptr(); . // SAFETY: the caller guarantees that `offset` doesn't exceed `self.len()`, . // so this new pointer is inside `self` and thus guaranteed to be non-null. 2,021,346 ( 0.01%) self.ptr = unsafe { NonNull::new_unchecked(self.ptr.as_ptr().offset(offset)) }; . old . } . } . . // Helper function for moving the end of the iterator backwards by `offset` elements, . // returning the new end. . // Unsafe because the offset must not exceed `self.len()`. . #[inline(always)] -- line 101 ---------------------------------------- -- line 102 ---------------------------------------- . unsafe fn pre_dec_end(&mut self, offset: isize) -> * $raw_mut T { . if mem::size_of::() == 0 { . zst_shrink!(self, offset); . self.ptr.as_ptr() . } else { . // SAFETY: the caller guarantees that `offset` doesn't exceed `self.len()`, . // which is guaranteed to not overflow an `isize`. Also, the resulting pointer . // is in bounds of `slice`, which fulfills the other requirements for `offset`. 40,001 ( 0.00%) self.end = unsafe { self.end.offset(-offset) }; . self.end . } . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl ExactSizeIterator for $name<'_, T> { . #[inline(always)] . fn len(&self) -> usize { 629,750 ( 0.00%) len!(self) . } . . #[inline(always)] . fn is_empty(&self) -> bool { . is_empty!(self) . } . } . -- line 128 ---------------------------------------- -- line 134 ---------------------------------------- . fn next(&mut self) -> Option<$elem> { . // could be implemented with slices, but this avoids bounds checks . . // 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_unchecked!` is safe . // since we check if the iterator is empty first. . unsafe { 1,482,661 ( 0.00%) assume(!self.ptr.as_ptr().is_null()); . if mem::size_of::() != 0 { 204,379 ( 0.00%) assume(!self.end.is_null()); . } 440,122,325 ( 1.13%) if is_empty!(self) { . None . } else { 2 ( 0.00%) Some(next_unchecked!(self)) . } . } . } . . #[inline] . fn size_hint(&self) -> (usize, Option) { 14,107,997 ( 0.04%) let exact = len!(self); . (exact, Some(exact)) . } . . #[inline] . fn count(self) -> usize { . len!(self) . } . . #[inline] . fn nth(&mut self, n: usize) -> Option<$elem> { 127,763 ( 0.00%) if n >= len!(self) { . // This iterator is now empty. . if mem::size_of::() == 0 { . // We have to do it this way as `ptr` may never be 0, but `end` . // could be (due to wrapping). . self.end = self.ptr.as_ptr(); . } else { . // SAFETY: end can't be 0 if T isn't ZST because ptr isn't 0 and end >= ptr . unsafe { -- line 175 ---------------------------------------- -- line 203 ---------------------------------------- . // faster to compile. . #[inline] . fn for_each(mut self, mut f: F) . where . Self: Sized, . F: FnMut(Self::Item), . { . while let Some(x) = self.next() { 35,814 ( 0.00%) f(x); . } . } . . // We override the default implementation, which uses `try_fold`, . // because this simple implementation generates less LLVM IR and is . // faster to compile. . #[inline] . fn all(&mut self, mut f: F) -> bool . where . Self: Sized, . F: FnMut(Self::Item) -> bool, . { 27,515 ( 0.00%) while let Some(x) = self.next() { 135,879 ( 0.00%) if !f(x) { . return false; . } . } . true . } . . // We override the default implementation, which uses `try_fold`, . // because this simple implementation generates less LLVM IR and is . // faster to compile. . #[inline] 24 ( 0.00%) fn any(&mut self, mut f: F) -> bool . where . Self: Sized, . F: FnMut(Self::Item) -> bool, . { 2,701,324 ( 0.01%) while let Some(x) = self.next() { 3,668,619 ( 0.01%) if f(x) { . return true; . } . } . false 24 ( 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

(&mut self, mut predicate: P) -> Option . where . Self: Sized, . P: FnMut(&Self::Item) -> bool, . { 985,332 ( 0.00%) while let Some(x) = self.next() { 863,093 ( 0.00%) if predicate(&x) { 1,998 ( 0.00%) return Some(x); . } . } . None 874 ( 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, . { 126,254 ( 0.00%) while let Some(x) = self.next() { 944,628 ( 0.00%) if let Some(y) = f(x) { 157,988 ( 0.00%) return Some(y); . } . } . None 26,423 ( 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() { 1,764,575 ( 0.00%) 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; 252,656 ( 0.00%) while let Some(x) = self.next_back() { 3,382,525 ( 0.01%) i -= 1; 2,731,707 ( 0.01%) 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` 603,218 ( 0.00%) unsafe { & $( $mut_ )? * self.ptr.as_ptr().add(idx) } . } . . $($extra)* . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl<'a, T> DoubleEndedIterator for $name<'a, T> { . #[inline] -- line 348 ---------------------------------------- -- line 349 ---------------------------------------- . fn next_back(&mut self) -> Option<$elem> { . // could be implemented with slices, but this avoids bounds checks . . // 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 { 69,755 ( 0.00%) assume(!self.ptr.as_ptr().is_null()); . if mem::size_of::() != 0 { 69,778 ( 0.00%) assume(!self.end.is_null()); . } 7,679,328 ( 0.02%) if is_empty!(self) { . None . } else { . Some(next_back_unchecked!(self)) . } . } . } . . #[inline] -- line 369 ---------------------------------------- 55,212,421 ( 0.14%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/ena-0.14.0/src/snapshot_vec.rs -------------------------------------------------------------------------------- Ir -- line 42 ---------------------------------------- . . impl Rollback> for SnapshotVecStorage { . fn reverse(&mut self, undo: UndoLog) { . self.values.reverse(undo) . } . } . impl Rollback> for Vec { . fn reverse(&mut self, undo: UndoLog) { 1,296,060 ( 0.00%) match undo { . NewElem(i) => { . self.pop(); 503,559 ( 0.00%) assert!(Vec::len(self) == i); . } . . SetElem(i, v) => { 408,119 ( 0.00%) self[i] = v; . } . . Other(u) => { . D::reverse(self, u); . } . } . } . } -- line 65 ---------------------------------------- -- line 76 ---------------------------------------- . impl VecLike for Vec . where . D: SnapshotVecDelegate, . { . fn push(&mut self, item: D::Value) { . Vec::push(self, item) . } . fn len(&self) -> usize { 568,988 ( 0.00%) Vec::len(self) . } . fn reserve(&mut self, size: usize) { . Vec::reserve(self, size) . } . } . . impl VecLike for &'_ mut Vec . where . D: SnapshotVecDelegate, . { . fn push(&mut self, item: D::Value) { . Vec::push(self, item) . } . fn len(&self) -> usize { 3,065,982 ( 0.01%) Vec::len(self) . } . fn reserve(&mut self, size: usize) { . Vec::reserve(self, size) . } . } . . #[allow(type_alias_bounds)] . pub type SnapshotVecStorage = -- line 107 ---------------------------------------- -- line 191 ---------------------------------------- . } . . impl, D: SnapshotVecDelegate, U> SnapshotVec { . pub fn len(&self) -> usize { . self.values.len() . } . . pub fn get(&self, index: usize) -> &D::Value { 186,260,464 ( 0.48%) &self.values.as_ref()[index] . } . . /// Returns a mutable pointer into the vec; whatever changes you make here cannot be undone . /// automatically, so you should be sure call `record()` with some sort of suitable undo . /// action. . pub fn get_mut(&mut self, index: usize) -> &mut D::Value { 411,956 ( 0.00%) &mut self.values.as_mut()[index] . } . . /// Reserve space for new values, just like an ordinary vec. . pub fn reserve(&mut self, additional: usize) { . // This is not affected by snapshots or anything. . self.values.reserve(additional); . } . } -- line 214 ---------------------------------------- -- line 219 ---------------------------------------- . } . . pub fn record(&mut self, action: D::Undo) { . if self.in_snapshot() { . self.undo_log.push(Other(action)); . } . } . 6,799,453 ( 0.02%) pub fn push(&mut self, elem: D::Value) -> usize { . let len = self.values.len(); . self.values.push(elem); . 924,447 ( 0.00%) if self.in_snapshot() { . self.undo_log.push(NewElem(len)); . } . . len 6,265,151 ( 0.02%) } . . /// Updates the element at the given index. The old value will saved (and perhaps restored) if . /// a snapshot is active. . pub fn set(&mut self, index: usize, new_elem: D::Value) { . let old_elem = mem::replace(&mut self.values.as_mut()[index], new_elem); . if self.undo_log.in_snapshot() { . self.undo_log.push(SetElem(index, old_elem)); . } . } . . /// Updates all elements. Potentially more efficient -- but . /// otherwise equivalent to -- invoking `set` for each element. 7 ( 0.00%) pub fn set_all(&mut self, mut new_elems: impl FnMut(usize) -> D::Value) { 1 ( 0.00%) if !self.undo_log.in_snapshot() { . for (index, slot) in self.values.as_mut().iter_mut().enumerate() { 236 ( 0.00%) *slot = new_elems(index); . } . } else { . for i in 0..self.values.len() { . self.set(i, new_elems(i)); . } . } 8 ( 0.00%) } . 2,163,901 ( 0.01%) pub fn update(&mut self, index: usize, op: OP) . where . OP: FnOnce(&mut D::Value), . D::Value: Clone, . { 259,466 ( 0.00%) if self.undo_log.in_snapshot() { 945,768 ( 0.00%) let old_elem = self.values.as_mut()[index].clone(); 2,388 ( 0.00%) self.undo_log.push(SetElem(index, old_elem)); . } 763,920 ( 0.00%) op(&mut self.values.as_mut()[index]); 2,075,728 ( 0.01%) } . } . . impl SnapshotVec . where . D: SnapshotVecDelegate, . V: VecLike + Rollback>, . L: Snapshots>, . { -- line 279 ---------------------------------------- 787,843 ( 0.00%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/alloc/src/vec/mod.rs -------------------------------------------------------------------------------- Ir -- line 417 ---------------------------------------- . /// # #![allow(unused_mut)] . /// let mut vec: Vec = Vec::new(); . /// ``` . #[inline] . #[rustc_const_stable(feature = "const_vec_new", since = "1.39.0")] . #[stable(feature = "rust1", since = "1.0.0")] . #[must_use] . pub const fn new() -> Self { 24,308,176 ( 0.06%) Vec { buf: RawVec::NEW, len: 0 } 1,240 ( 0.00%) } . . /// Constructs a new, empty `Vec` with the specified capacity. . /// . /// The vector will be able to hold exactly `capacity` elements without . /// reallocating. If `capacity` is 0, the vector will not allocate. . /// . /// It is important to note that although the returned vector has the . /// *capacity* specified, the vector will have a zero *length*. For an -- line 434 ---------------------------------------- -- line 601 ---------------------------------------- . /// vec.push(11); . /// assert_eq!(vec.len(), 11); . /// assert!(vec.capacity() >= 11); . /// ``` . #[cfg(not(no_global_oom_handling))] . #[inline] . #[unstable(feature = "allocator_api", issue = "32838")] . pub fn with_capacity_in(capacity: usize, alloc: A) -> Self { 7,898,715 ( 0.02%) Vec { buf: RawVec::with_capacity_in(capacity, alloc), len: 0 } . } . . /// Creates a `Vec` directly from the raw components of another vector. . /// . /// # Safety . /// . /// This is highly unsafe, due to the number of invariants that aren't . /// checked: -- line 617 ---------------------------------------- -- line 677 ---------------------------------------- . /// // Put everything back together into a Vec . /// let rebuilt = Vec::from_raw_parts_in(p, len, cap, alloc.clone()); . /// assert_eq!(rebuilt, [4, 5, 6]); . /// } . /// ``` . #[inline] . #[unstable(feature = "allocator_api", issue = "32838")] . pub unsafe fn from_raw_parts_in(ptr: *mut T, length: usize, capacity: usize, alloc: A) -> Self { 547,972 ( 0.00%) unsafe { Vec { buf: RawVec::from_raw_parts_in(ptr, capacity, alloc), len: length } } . } . . /// Decomposes a `Vec` into its raw components. . /// . /// Returns the raw pointer to the underlying data, the length of . /// the vector (in elements), and the allocated capacity of the . /// data (in elements). These are the same arguments in the same . /// order as the arguments to [`from_raw_parts`]. -- line 693 ---------------------------------------- -- line 778 ---------------------------------------- . /// . /// ``` . /// let vec: Vec = Vec::with_capacity(10); . /// assert_eq!(vec.capacity(), 10); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn capacity(&self) -> usize { 5,395,481 ( 0.01%) self.buf.capacity() . } . . /// Reserves capacity for at least `additional` more elements to be inserted . /// in the given `Vec`. The collection may reserve more space to avoid . /// frequent reallocations. After calling `reserve`, capacity will be . /// greater than or equal to `self.len() + additional`. Does nothing if . /// capacity is already sufficient. . /// -- line 794 ---------------------------------------- -- line 801 ---------------------------------------- . /// ``` . /// let mut vec = vec![1]; . /// vec.reserve(10); . /// assert!(vec.capacity() >= 11); . /// ``` . #[cfg(not(no_global_oom_handling))] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn reserve(&mut self, additional: usize) { 3,845,999 ( 0.01%) self.buf.reserve(self.len, additional); . } . . /// Reserves the minimum capacity for exactly `additional` more elements to . /// be inserted in the given `Vec`. After calling `reserve_exact`, . /// capacity will be greater than or equal to `self.len() + additional`. . /// Does nothing if the capacity is already sufficient. . /// . /// Note that the allocator may give the collection more space than it -- line 817 ---------------------------------------- -- line 829 ---------------------------------------- . /// ``` . /// let mut vec = vec![1]; . /// vec.reserve_exact(10); . /// assert!(vec.capacity() >= 11); . /// ``` . #[cfg(not(no_global_oom_handling))] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn reserve_exact(&mut self, additional: usize) { 63,353 ( 0.00%) self.buf.reserve_exact(self.len, additional); . } . . /// Tries to reserve capacity for at least `additional` more elements to be inserted . /// in the given `Vec`. The collection may reserve more space to avoid . /// frequent reallocations. After calling `try_reserve`, capacity will be . /// greater than or equal to `self.len() + additional`. Does nothing if . /// capacity is already sufficient. . /// -- line 845 ---------------------------------------- -- line 930 ---------------------------------------- . /// assert!(vec.capacity() >= 3); . /// ``` . #[cfg(not(no_global_oom_handling))] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn shrink_to_fit(&mut self) { . // The capacity is never less than the length, and there's nothing to do when . // they are equal, so we can avoid the panic case in `RawVec::shrink_to_fit` . // by only calling it with a greater capacity. 266,225 ( 0.00%) if self.capacity() > self.len { 114,195 ( 0.00%) self.buf.shrink_to_fit(self.len); . } . } . . /// Shrinks the capacity of the vector with a lower bound. . /// . /// The capacity will remain at least as large as both the length . /// and the supplied value. . /// -- line 947 ---------------------------------------- -- line 990 ---------------------------------------- . /// let slice = vec.into_boxed_slice(); . /// assert_eq!(slice.into_vec().capacity(), 3); . /// ``` . #[cfg(not(no_global_oom_handling))] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn into_boxed_slice(mut self) -> Box<[T], A> { . unsafe { . self.shrink_to_fit(); 87,442 ( 0.00%) let me = ManuallyDrop::new(self); . let buf = ptr::read(&me.buf); . let len = me.len(); . buf.into_box(len).assume_init() . } . } . . /// Shortens the vector, keeping the first `len` elements and dropping . /// the rest. -- line 1006 ---------------------------------------- -- line 1040 ---------------------------------------- . /// let mut vec = vec![1, 2, 3]; . /// vec.truncate(0); . /// assert_eq!(vec, []); . /// ``` . /// . /// [`clear`]: Vec::clear . /// [`drain`]: Vec::drain . #[stable(feature = "rust1", since = "1.0.0")] 1,305,668 ( 0.00%) pub fn truncate(&mut self, len: usize) { . // This is safe because: . // . // * the slice passed to `drop_in_place` is valid; the `len > self.len` . // case avoids creating an invalid slice, and . // * the `len` of the vector is shrunk before calling `drop_in_place`, . // such that no value will be dropped twice in case `drop_in_place` . // were to panic once (if it panics twice, the program aborts). . unsafe { . // Note: It's intentional that this is `>` and not `>=`. . // Changing it to `>=` has negative performance . // implications in some cases. See #78884 for more. 1,167,051 ( 0.00%) if len > self.len { . return; . } . let remaining_len = self.len - len; . let s = ptr::slice_from_raw_parts_mut(self.as_mut_ptr().add(len), remaining_len); 1,798,168 ( 0.00%) self.len = len; 37,482 ( 0.00%) ptr::drop_in_place(s); . } 1,566,782 ( 0.00%) } . . /// Extracts a slice containing the entire vector. . /// . /// Equivalent to `&s[..]`. . /// . /// # Examples . /// . /// ``` -- line 1076 ---------------------------------------- -- line 1126 ---------------------------------------- . /// ``` . /// . /// [`as_mut_ptr`]: Vec::as_mut_ptr . #[stable(feature = "vec_as_ptr", since = "1.37.0")] . #[inline] . pub fn as_ptr(&self) -> *const T { . // We shadow the slice method of the same name to avoid going through . // `deref`, which creates an intermediate reference. 115,759,697 ( 0.30%) let ptr = self.buf.ptr(); . unsafe { . assume(!ptr.is_null()); . } . ptr . } . . /// Returns an unsafe mutable pointer to the vector's buffer. . /// -- line 1142 ---------------------------------------- -- line 1162 ---------------------------------------- . /// } . /// assert_eq!(&*x, &[0, 1, 2, 3]); . /// ``` . #[stable(feature = "vec_as_ptr", since = "1.37.0")] . #[inline] . pub fn as_mut_ptr(&mut self) -> *mut T { . // We shadow the slice method of the same name to avoid going through . // `deref_mut`, which creates an intermediate reference. 64,423,342 ( 0.16%) let ptr = self.buf.ptr(); . unsafe { . assume(!ptr.is_null()); . } . ptr . } . . /// Returns a reference to the underlying allocator. . #[unstable(feature = "allocator_api", issue = "32838")] -- line 1178 ---------------------------------------- -- line 1259 ---------------------------------------- . /// . /// Normally, here, one would use [`clear`] instead to correctly drop . /// the contents and thus not leak memory. . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub unsafe fn set_len(&mut self, new_len: usize) { . debug_assert!(new_len <= self.capacity()); . 8,511,701 ( 0.02%) self.len = new_len; 133,456 ( 0.00%) } . . /// Removes an element from the vector and returns it. . /// . /// The removed element is replaced by the last element of the vector. . /// . /// This does not preserve ordering, but is *O*(1). . /// If you need to preserve the element order, use [`remove`] instead. . /// -- line 1276 ---------------------------------------- -- line 1305 ---------------------------------------- . assert_failed(index, len); . } . unsafe { . // We replace self[index] with the last element. Note that if the . // bounds check above succeeds there must be a last element (which . // can be self[index] itself). . let value = ptr::read(self.as_ptr().add(index)); . let base_ptr = self.as_mut_ptr(); 48 ( 0.00%) ptr::copy(base_ptr.add(len - 1), base_ptr.add(index), 1); . self.set_len(len - 1); . value . } . } . . /// Inserts an element at position `index` within the vector, shifting all . /// elements after it to the right. . /// -- line 1321 ---------------------------------------- -- line 1329 ---------------------------------------- . /// let mut vec = vec![1, 2, 3]; . /// vec.insert(1, 4); . /// assert_eq!(vec, [1, 4, 2, 3]); . /// vec.insert(4, 5); . /// assert_eq!(vec, [1, 4, 2, 3, 5]); . /// ``` . #[cfg(not(no_global_oom_handling))] . #[stable(feature = "rust1", since = "1.0.0")] 41,524 ( 0.00%) pub fn insert(&mut self, index: usize, element: T) { . #[cold] . #[inline(never)] . fn assert_failed(index: usize, len: usize) -> ! { . panic!("insertion index (is {}) should be <= len (is {})", index, len); . } . 6,946 ( 0.00%) let len = self.len(); 18,748 ( 0.00%) if index > len { . assert_failed(index, len); . } . . // space for the new element 29,654 ( 0.00%) if len == self.buf.capacity() { . self.reserve(1); . } . . unsafe { . // infallible . // The spot to put the new value . { . let p = self.as_mut_ptr().add(index); . // Shift everything over to make space. (Duplicating the . // `index`th element into two consecutive places.) 41,439 ( 0.00%) ptr::copy(p, p.offset(1), len - index); . // Write it in, overwriting the first copy of the `index`th . // element. . ptr::write(p, element); . } 29,654 ( 0.00%) self.set_len(len + 1); . } 35,592 ( 0.00%) } . . /// Removes and returns the element at position `index` within the vector, . /// shifting all elements after it to the left. . /// . /// Note: Because this shifts over the remaining elements, it has a . /// worst-case performance of *O*(*n*). If you don't need the order of elements . /// to be preserved, use [`swap_remove`] instead. If you'd like to remove . /// elements from the beginning of the `Vec`, consider using -- line 1376 ---------------------------------------- -- line 1395 ---------------------------------------- . pub fn remove(&mut self, index: usize) -> T { . #[cold] . #[inline(never)] . #[track_caller] . fn assert_failed(index: usize, len: usize) -> ! { . panic!("removal index (is {}) should be < len (is {})", index, len); . } . 2,191 ( 0.00%) let len = self.len(); 8,511 ( 0.00%) if index >= len { . assert_failed(index, len); . } . unsafe { . // infallible . let ret; . { . // the place we are taking from. . let ptr = self.as_mut_ptr().add(index); . // copy it out, unsafely having a copy of the value on . // the stack and in the vector at the same time. 4,048 ( 0.00%) ret = ptr::read(ptr); . . // Shift everything down to fill in that spot. 4,667 ( 0.00%) ptr::copy(ptr.offset(1), ptr, len - index - 1); . } 4,714 ( 0.00%) self.set_len(len - 1); . ret . } . } . . /// 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, visiting each element exactly once in the -- line 1428 ---------------------------------------- -- line 1442 ---------------------------------------- . /// ``` . /// let mut vec = vec![1, 2, 3, 4, 5]; . /// let keep = [false, true, true, false, true]; . /// let mut iter = keep.iter(); . /// vec.retain(|_| *iter.next().unwrap()); . /// assert_eq!(vec, [2, 3, 5]); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] 3,163,227 ( 0.01%) pub fn retain(&mut self, mut f: F) . where . F: FnMut(&T) -> bool, . { 98,037 ( 0.00%) self.retain_mut(|elem| f(elem)); 3,099,584 ( 0.01%) } . . /// Retains only the elements specified by the predicate, passing a mutable reference to it. . /// . /// In other words, remove all elements `e` such that `f(&mut e)` returns `false`. . /// This method operates in place, visiting each element exactly once in the . /// original order, and preserves the order of the retained elements. . /// . /// # Examples -- line 1463 ---------------------------------------- -- line 1474 ---------------------------------------- . /// }); . /// assert_eq!(vec, [2, 3, 4]); . /// ``` . #[unstable(feature = "vec_retain_mut", issue = "90829")] . pub fn retain_mut(&mut self, mut f: F) . where . F: FnMut(&mut T) -> bool, . { 407,328 ( 0.00%) let original_len = self.len(); . // Avoid double drop if the drop guard is not executed, . // since we may make some holes during the process. . unsafe { self.set_len(0) }; . . // Vec: [Kept, Kept, Hole, Hole, Hole, Hole, Unchecked, Unchecked] . // |<- processed len ->| ^- next to check . // |<- deleted cnt ->| . // |<- original_len ->| -- line 1490 ---------------------------------------- -- line 1499 ---------------------------------------- . v: &'a mut Vec, . processed_len: usize, . deleted_cnt: usize, . original_len: usize, . } . . impl Drop for BackshiftOnDrop<'_, T, A> { . fn drop(&mut self) { 373,780 ( 0.00%) if self.deleted_cnt > 0 { . // SAFETY: Trailing unchecked items must be valid since we never touch them. . unsafe { . ptr::copy( . self.v.as_ptr().add(self.processed_len), 316,484 ( 0.00%) self.v.as_mut_ptr().add(self.processed_len - self.deleted_cnt), . self.original_len - self.processed_len, . ); . } . } . // SAFETY: After filling holes, all items are in contiguous memory. . unsafe { 2 ( 0.00%) self.v.set_len(self.original_len - self.deleted_cnt); . } . } . } . . let mut g = BackshiftOnDrop { v: self, processed_len: 0, deleted_cnt: 0, original_len }; . . fn process_loop( . original_len: usize, . f: &mut F, . g: &mut BackshiftOnDrop<'_, T, A>, . ) where . F: FnMut(&mut T) -> bool, . { 4,527,310 ( 0.01%) while g.processed_len != original_len { . // SAFETY: Unchecked element must be valid. . let cur = unsafe { &mut *g.v.as_mut_ptr().add(g.processed_len) }; 1,258,904 ( 0.00%) if !f(cur) { . // Advance early to avoid double drop if `drop_in_place` panicked. 252,454 ( 0.00%) g.processed_len += 1; 127,142 ( 0.00%) g.deleted_cnt += 1; . // SAFETY: We never touch this element again after dropped. 3,503 ( 0.00%) unsafe { ptr::drop_in_place(cur) }; . // We already advanced the counter. . if DELETED { . continue; . } else { . break; . } . } . if DELETED { . // SAFETY: `deleted_cnt` > 0, so the hole slot must not overlap with current element. . // We use copy for move, and never touch this element again. . unsafe { 215,886 ( 0.00%) let hole_slot = g.v.as_mut_ptr().add(g.processed_len - g.deleted_cnt); . ptr::copy_nonoverlapping(cur, hole_slot, 1); . } . } 204,430 ( 0.00%) g.processed_len += 1; . } . } . . // Stage 1: Nothing was deleted. . process_loop::(original_len, &mut f, &mut g); . . // Stage 2: Some elements were deleted. . process_loop::(original_len, &mut f, &mut g); -- line 1565 ---------------------------------------- -- line 1606 ---------------------------------------- . /// ``` . /// let mut vec = vec!["foo", "bar", "Bar", "baz", "bar"]; . /// . /// vec.dedup_by(|a, b| a.eq_ignore_ascii_case(b)); . /// . /// assert_eq!(vec, ["foo", "bar", "baz", "bar"]); . /// ``` . #[stable(feature = "dedup_by", since = "1.16.0")] 51,576 ( 0.00%) pub fn dedup_by(&mut self, mut same_bucket: F) . where . F: FnMut(&mut T, &mut T) -> bool, . { 17,841 ( 0.00%) let len = self.len(); 44,064 ( 0.00%) if len <= 1 { . return; . } . . /* INVARIANT: vec.len() > read >= write > write-1 >= 0 */ . struct FillGapOnDrop<'a, T, A: core::alloc::Allocator> { . /* Offset of the element we want to check if it is duplicate */ . read: usize, . -- line 1627 ---------------------------------------- -- line 1670 ---------------------------------------- . let ptr = gap.vec.as_mut_ptr(); . . /* Drop items while going through Vec, it should be more efficient than . * doing slice partition_dedup + truncate */ . . /* SAFETY: Because of the invariant, read_ptr, prev_ptr and write_ptr . * are always in-bounds and read_ptr never aliases prev_ptr */ . unsafe { 84,641 ( 0.00%) while gap.read < len { . let read_ptr = ptr.add(gap.read); . let prev_ptr = ptr.add(gap.write.wrapping_sub(1)); . 6,585 ( 0.00%) if same_bucket(&mut *read_ptr, &mut *prev_ptr) { . // Increase `gap.read` now since the drop may panic. . gap.read += 1; . /* We have found duplicate, drop it in-place */ . ptr::drop_in_place(read_ptr); . } else { . let write_ptr = ptr.add(gap.write); . . /* Because `read_ptr` can be equal to `write_ptr`, we either . * have to use `copy` or conditional `copy_nonoverlapping`. . * Looks like the first option is faster. */ . ptr::copy(read_ptr, write_ptr, 1); . . /* We have filled that place, so go further */ 46,939 ( 0.00%) gap.write += 1; . gap.read += 1; . } . } . . /* Technically we could let `gap` clean up with its Drop, but . * when `same_bucket` is guaranteed to not panic, this bloats a little . * the codegen, so we just do it manually */ . gap.vec.set_len(gap.write); . mem::forget(gap); . } 58,944 ( 0.00%) } . . /// Appends an element to the back of a collection. . /// . /// # Panics . /// . /// Panics if the new capacity exceeds `isize::MAX` bytes. . /// . /// # Examples -- line 1715 ---------------------------------------- -- line 1717 ---------------------------------------- . /// ``` . /// let mut vec = vec![1, 2]; . /// vec.push(3); . /// assert_eq!(vec, [1, 2, 3]); . /// ``` . #[cfg(not(no_global_oom_handling))] . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] 4,890 ( 0.00%) pub fn push(&mut self, value: T) { . // This will panic or abort if we would allocate > isize::MAX bytes . // or if the length increment would overflow for zero-sized types. 31,252,622 ( 0.08%) if self.len == self.buf.capacity() { 2,822,801 ( 0.01%) self.buf.reserve_for_push(self.len); . } . unsafe { 1,310,830 ( 0.00%) let end = self.as_mut_ptr().add(self.len); . ptr::write(end, value); 46,790,331 ( 0.12%) self.len += 1; . } 3,912 ( 0.00%) } . . /// Removes the last element from a vector and returns it, or [`None`] if it . /// is empty. . /// . /// If you'd like to pop the first element, consider using . /// [`VecDeque::pop_front`] instead. . /// . /// [`VecDeque::pop_front`]: crate::collections::VecDeque::pop_front -- line 1744 ---------------------------------------- -- line 1748 ---------------------------------------- . /// ``` . /// let mut vec = vec![1, 2, 3]; . /// assert_eq!(vec.pop(), Some(3)); . /// assert_eq!(vec, [1, 2]); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn pop(&mut self) -> Option { 11,066,849 ( 0.03%) if self.len == 0 { 1,336 ( 0.00%) None . } else { . unsafe { 7,559,114 ( 0.02%) self.len -= 1; 2,100,476 ( 0.01%) Some(ptr::read(self.as_ptr().add(self.len()))) . } . } . } . . /// Moves all the elements of `other` into `Self`, leaving `other` empty. . /// . /// # Panics . /// -- line 1769 ---------------------------------------- -- line 1776 ---------------------------------------- . /// let mut vec2 = vec![4, 5, 6]; . /// vec.append(&mut vec2); . /// assert_eq!(vec, [1, 2, 3, 4, 5, 6]); . /// assert_eq!(vec2, []); . /// ``` . #[cfg(not(no_global_oom_handling))] . #[inline] . #[stable(feature = "append", since = "1.4.0")] 3,416 ( 0.00%) pub fn append(&mut self, other: &mut Self) { . unsafe { . self.append_elements(other.as_slice() as _); . other.set_len(0); . } 2,928 ( 0.00%) } . . /// Appends elements to `Self` from other buffer. . #[cfg(not(no_global_oom_handling))] . #[inline] . unsafe fn append_elements(&mut self, other: *const [T]) { . let count = unsafe { (*other).len() }; . self.reserve(count); 774,146 ( 0.00%) let len = self.len(); 1,360 ( 0.00%) unsafe { ptr::copy_nonoverlapping(other as *const T, self.as_mut_ptr().add(len), count) }; 6,344,477 ( 0.02%) self.len += count; . } . . /// Creates a draining iterator that removes the specified range in the vector . /// and yields the removed items. . /// . /// When the iterator **is** dropped, all elements in the range are removed . /// from the vector, even if the iterator was not fully consumed. If the . /// iterator **is not** dropped (with [`mem::forget`] for example), it is -- line 1807 ---------------------------------------- -- line 1834 ---------------------------------------- . // When the Drain is first created, it shortens the length of . // the source vector to make sure no uninitialized or moved-from elements . // are accessible at all if the Drain's destructor never gets to run. . // . // Drain will ptr::read out the values to remove. . // When finished, remaining tail of the vec is copied back to cover . // the hole, and the vector length is restored to the new length. . // 209,532 ( 0.00%) let len = self.len(); . let Range { start, end } = slice::range(range, ..len); . . unsafe { . // set self.vec length's to start, to be safe in case Drain is leaked . self.set_len(start); . // Use the borrow in the IterMut to indicate borrowing behavior of the . // whole Drain iterator (like &mut T). 10,471 ( 0.00%) let range_slice = slice::from_raw_parts_mut(self.as_mut_ptr().add(start), end - start); 191,020 ( 0.00%) Drain { . tail_start: end, 7,018 ( 0.00%) tail_len: len - end, . iter: range_slice.iter(), . vec: NonNull::from(self), . } . } . } . . /// Clears the vector, removing all values. . /// -- line 1861 ---------------------------------------- -- line 1869 ---------------------------------------- . /// . /// v.clear(); . /// . /// assert!(v.is_empty()); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn clear(&mut self) { 2,337,335 ( 0.01%) self.truncate(0) . } . . /// Returns the number of elements in the vector, also referred to . /// as its 'length'. . /// . /// # Examples . /// . /// ``` -- line 1885 ---------------------------------------- -- line 1900 ---------------------------------------- . /// let mut v = Vec::new(); . /// assert!(v.is_empty()); . /// . /// v.push(1); . /// assert!(!v.is_empty()); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn is_empty(&self) -> bool { 3,767,278 ( 0.01%) self.len() == 0 . } . . /// Splits the collection into two at the given index. . /// . /// Returns a newly allocated vector containing the elements in the range . /// `[at, len)`. After the call, the original vector will be left containing . /// the elements `[0, at)` with its previous capacity unchanged. . /// -- line 1916 ---------------------------------------- -- line 1935 ---------------------------------------- . A: Clone, . { . #[cold] . #[inline(never)] . fn assert_failed(at: usize, len: usize) -> ! { . panic!("`at` split index (is {}) should be <= len (is {})", at, len); . } . 11,295 ( 0.00%) if at > self.len() { . assert_failed(at, self.len()); . } . 9,177 ( 0.00%) if at == 0 { . // the new vector can take over the original buffer and avoid the copy . return mem::replace( . self, . Vec::with_capacity_in(self.capacity(), self.allocator().clone()), . ); . } . . let other_len = self.len - at; -- line 1955 ---------------------------------------- -- line 1988 ---------------------------------------- . /// . /// let mut vec = vec![]; . /// let mut p = 1; . /// vec.resize_with(4, || { p *= 2; p }); . /// assert_eq!(vec, [2, 4, 8, 16]); . /// ``` . #[cfg(not(no_global_oom_handling))] . #[stable(feature = "vec_resize_with", since = "1.33.0")] 269,250 ( 0.00%) pub fn resize_with(&mut self, new_len: usize, f: F) . where . F: FnMut() -> T, . { 36,936 ( 0.00%) let len = self.len(); 73,872 ( 0.00%) if new_len > len { 212,217 ( 0.00%) self.extend_with(new_len - len, ExtendFunc(f)); . } else { . self.truncate(new_len); . } 232,314 ( 0.00%) } . . /// Consumes and leaks the `Vec`, returning a mutable reference to the contents, . /// `&'a mut [T]`. Note that the type `T` must outlive the chosen lifetime . /// `'a`. If the type has only static references, or none at all, then this . /// may be chosen to be `'static`. . /// . /// As of Rust 1.57, this method does not reallocate or shrink the `Vec`, . /// so the leaked allocation may include unused capacity that is not part -- line 2014 ---------------------------------------- -- line 2070 ---------------------------------------- . #[stable(feature = "vec_spare_capacity", since = "1.60.0")] . #[inline] . pub fn spare_capacity_mut(&mut self) -> &mut [MaybeUninit] { . // Note: . // This method is not implemented in terms of `split_at_spare_mut`, . // to prevent invalidation of pointers to the buffer. . unsafe { . slice::from_raw_parts_mut( 2 ( 0.00%) self.as_mut_ptr().add(self.len) as *mut MaybeUninit, 148 ( 0.00%) self.buf.capacity() - self.len, . ) . } . } . . /// Returns vector content as a slice of `T`, along with the remaining spare . /// capacity of the vector as a slice of `MaybeUninit`. . /// . /// The returned spare capacity slice can be used to fill the vector with data -- line 2087 ---------------------------------------- -- line 2189 ---------------------------------------- . /// assert_eq!(vec, ["hello", "world", "world"]); . /// . /// let mut vec = vec![1, 2, 3, 4]; . /// vec.resize(2, 0); . /// assert_eq!(vec, [1, 2]); . /// ``` . #[cfg(not(no_global_oom_handling))] . #[stable(feature = "vec_resize", since = "1.5.0")] 274,520 ( 0.00%) pub fn resize(&mut self, new_len: usize, value: T) { 27,452 ( 0.00%) let len = self.len(); . 82,356 ( 0.00%) if new_len > len { 38,427 ( 0.00%) self.extend_with(new_len - len, ExtendElement(value)) . } else { . self.truncate(new_len); . } 45,844 ( 0.00%) } . . /// Clones and appends all elements in a slice to the `Vec`. . /// . /// Iterates over the slice `other`, clones each element, and then appends . /// it to this `Vec`. The `other` slice is traversed in-order. . /// . /// Note that this function is same as [`extend`] except that it is . /// specialized to work with slices instead. If and when Rust gets -- line 2213 ---------------------------------------- -- line 2271 ---------------------------------------- . trait ExtendWith { . fn next(&mut self) -> T; . fn last(self) -> T; . } . . struct ExtendElement(T); . impl ExtendWith for ExtendElement { . fn next(&mut self) -> T { 12,825 ( 0.00%) self.0.clone() . } . fn last(self) -> T { . self.0 . } . } . . struct ExtendFunc(F); . impl T> ExtendWith for ExtendFunc { -- line 2287 ---------------------------------------- -- line 2291 ---------------------------------------- . fn last(mut self) -> T { . (self.0)() . } . } . . impl Vec { . #[cfg(not(no_global_oom_handling))] . /// Extend the vector by `n` values, using the given generator. 2,424,315 ( 0.01%) fn extend_with>(&mut self, n: usize, mut value: E) { . self.reserve(n); . . unsafe { 42,241 ( 0.00%) let mut ptr = self.as_mut_ptr().add(self.len()); . // Use SetLenOnDrop to work around bug where compiler . // might not realize the store through `ptr` through self.set_len() . // don't alias. . let mut local_len = SetLenOnDrop::new(&mut self.len); . . // Write all elements except the last one . for _ in 1..n { . ptr::write(ptr, value.next()); . ptr = ptr.offset(1); . // Increment the length in every step in case next() panics . local_len.increment_len(1); . } . 1,937,538 ( 0.00%) if n > 0 { . // We can write the last element directly without cloning needlessly . ptr::write(ptr, value.last()); . local_len.increment_len(1); . } . . // len set by scope guard . } 1,902,357 ( 0.00%) } . } . . impl Vec { . /// Removes consecutive repeated elements in the vector according to the . /// [`PartialEq`] trait implementation. . /// . /// If the vector is sorted, this removes all duplicates. . /// -- line 2333 ---------------------------------------- -- line 2338 ---------------------------------------- . /// . /// vec.dedup(); . /// . /// assert_eq!(vec, [1, 2, 3, 2]); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[inline] . pub fn dedup(&mut self) { 7,372 ( 0.00%) self.dedup_by(|a, b| a == b) . } . } . . //////////////////////////////////////////////////////////////////////////////// . // Internal methods and functions . //////////////////////////////////////////////////////////////////////////////// . . #[doc(hidden)] . #[cfg(not(no_global_oom_handling))] . #[stable(feature = "rust1", since = "1.0.0")] 532,985 ( 0.00%) pub fn from_elem(elem: T, n: usize) -> Vec { 2,766,633 ( 0.01%) ::from_elem(elem, n, Global) 629,095 ( 0.00%) } . . #[doc(hidden)] . #[cfg(not(no_global_oom_handling))] . #[unstable(feature = "allocator_api", issue = "32838")] . pub fn from_elem_in(elem: T, n: usize, alloc: A) -> Vec { . ::from_elem(elem, n, alloc) . } . -- line 2367 ---------------------------------------- -- line 2424 ---------------------------------------- . // Common trait implementations for Vec . //////////////////////////////////////////////////////////////////////////////// . . #[stable(feature = "rust1", since = "1.0.0")] . impl ops::Deref for Vec { . type Target = [T]; . . fn deref(&self) -> &[T] { 153,285,471 ( 0.39%) unsafe { slice::from_raw_parts(self.as_ptr(), self.len) } 420 ( 0.00%) } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl ops::DerefMut for Vec { . fn deref_mut(&mut self) -> &mut [T] { 73,273,210 ( 0.19%) unsafe { slice::from_raw_parts_mut(self.as_mut_ptr(), self.len) } . } . } . . #[cfg(not(no_global_oom_handling))] . trait SpecCloneFrom { . fn clone_from(this: &mut Self, other: &Self); . } . -- line 2447 ---------------------------------------- -- line 2468 ---------------------------------------- . this.extend_from_slice(other); . } . } . . #[cfg(not(no_global_oom_handling))] . #[stable(feature = "rust1", since = "1.0.0")] . impl Clone for Vec { . #[cfg(not(test))] 2,036,230 ( 0.01%) fn clone(&self) -> Self { . let alloc = self.allocator().clone(); 2 ( 0.00%) <[T]>::to_vec_in(&**self, alloc) 2,464,151 ( 0.01%) } . . // HACK(japaric): with cfg(test) the inherent `[T]::to_vec` method, which is . // required for this method definition, is not available. Instead use the . // `slice::to_vec` function which is only available with cfg(test) . // NB see the slice::hack module in slice.rs for more information . #[cfg(test)] . fn clone(&self) -> Self { . let alloc = self.allocator().clone(); -- line 2487 ---------------------------------------- -- line 2518 ---------------------------------------- . message = "vector indices are of type `usize` or ranges of `usize`", . label = "vector indices are of type `usize` or ranges of `usize`" . )] . impl, A: Allocator> Index for Vec { . type Output = I::Output; . . #[inline] . fn index(&self, index: I) -> &Self::Output { 1,609,341 ( 0.00%) Index::index(&**self, index) . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_on_unimplemented( . message = "vector indices are of type `usize` or ranges of `usize`", . label = "vector indices are of type `usize` or ranges of `usize`" . )] . impl, A: Allocator> IndexMut for Vec { . #[inline] . fn index_mut(&mut self, index: I) -> &mut Self::Output { 3,556 ( 0.00%) IndexMut::index_mut(&mut **self, index) . } . } . . #[cfg(not(no_global_oom_handling))] . #[stable(feature = "rust1", since = "1.0.0")] . impl FromIterator for Vec { . #[inline] . fn from_iter>(iter: I) -> Vec { 11,641,950 ( 0.03%) >::from_iter(iter.into_iter()) . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl IntoIterator for Vec { . type Item = T; . type IntoIter = IntoIter; . -- line 2555 ---------------------------------------- -- line 2564 ---------------------------------------- . /// for s in v.into_iter() { . /// // s has type String, not &String . /// println!("{}", s); . /// } . /// ``` . #[inline] . fn into_iter(self) -> IntoIter { . unsafe { 4,354,928 ( 0.01%) let mut me = ManuallyDrop::new(self); . let alloc = ptr::read(me.allocator()); . let begin = me.as_mut_ptr(); . let end = if mem::size_of::() == 0 { . arith_offset(begin as *const i8, me.len() as isize) as *const T . } else { . begin.add(me.len()) as *const T . }; . let cap = me.buf.capacity(); 1,500,370 ( 0.00%) IntoIter { . buf: NonNull::new_unchecked(begin), . phantom: PhantomData, . cap, . alloc, . ptr: begin, . end, . } . } -- line 2589 ---------------------------------------- -- line 2591 ---------------------------------------- . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl<'a, T, A: Allocator> IntoIterator for &'a Vec { . type Item = &'a T; . type IntoIter = slice::Iter<'a, T>; . . fn into_iter(self) -> slice::Iter<'a, T> { 145 ( 0.00%) self.iter() . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl<'a, T, A: Allocator> IntoIterator for &'a mut Vec { . type Item = &'a mut T; . type IntoIter = slice::IterMut<'a, T>; . . fn into_iter(self) -> slice::IterMut<'a, T> { 1,206 ( 0.00%) self.iter_mut() . } . } . . #[cfg(not(no_global_oom_handling))] . #[stable(feature = "rust1", since = "1.0.0")] . impl Extend for Vec { . #[inline] 17,224 ( 0.00%) fn extend>(&mut self, iter: I) { 4,931,076 ( 0.01%) >::spec_extend(self, iter.into_iter()) 17,224 ( 0.00%) } . . #[inline] . fn extend_one(&mut self, item: T) { 32 ( 0.00%) self.push(item); . } . . #[inline] . fn extend_reserve(&mut self, additional: usize) { . self.reserve(additional); . } . } . -- line 2631 ---------------------------------------- -- line 2636 ---------------------------------------- . fn extend_desugared>(&mut self, mut iterator: I) { . // This is the case for a general iterator. . // . // This function should be the moral equivalent of: . // . // for item in iterator { . // self.push(item); . // } 728,216 ( 0.00%) while let Some(element) = iterator.next() { 253,471 ( 0.00%) let len = self.len(); 3,048,758 ( 0.01%) if len == self.capacity() { 4,650 ( 0.00%) let (lower, _) = iterator.size_hint(); . self.reserve(lower.saturating_add(1)); . } . unsafe { . ptr::write(self.as_mut_ptr().add(len), element); . // Since next() executes user code which can panic we have to bump the length . // after each step. . // NB can't overflow since we would have had to alloc the address space 2,183,044 ( 0.01%) self.set_len(len + 1); . } . } 24,978 ( 0.00%) } . . /// Creates a splicing iterator that replaces the specified range in the vector . /// with the given `replace_with` iterator and yields the removed items. . /// `replace_with` does not need to be the same length as `range`. . /// . /// `range` is removed even if the iterator is not consumed until the end. . /// . /// It is unspecified how many elements are removed from the vector -- line 2666 ---------------------------------------- -- line 2693 ---------------------------------------- . #[cfg(not(no_global_oom_handling))] . #[inline] . #[stable(feature = "vec_splice", since = "1.21.0")] . pub fn splice(&mut self, range: R, replace_with: I) -> Splice<'_, I::IntoIter, A> . where . R: RangeBounds, . I: IntoIterator, . { 38,015 ( 0.00%) Splice { drain: self.drain(range), replace_with: replace_with.into_iter() } . } . . /// Creates an iterator which uses a closure to determine if an element should be removed. . /// . /// If the closure returns true, then the element is removed and yielded. . /// If the closure returns false, the element will remain in the vector and will not be yielded . /// by the iterator. . /// -- line 2709 ---------------------------------------- -- line 2745 ---------------------------------------- . /// assert_eq!(evens, vec![2, 4, 6, 8, 14]); . /// assert_eq!(odds, vec![1, 3, 5, 9, 11, 13, 15]); . /// ``` . #[unstable(feature = "drain_filter", reason = "recently added", issue = "43244")] . pub fn drain_filter(&mut self, filter: F) -> DrainFilter<'_, T, F, A> . where . F: FnMut(&mut T) -> bool, . { 13,074 ( 0.00%) let old_len = self.len(); . . // Guard against us getting leaked (leak amplification) . unsafe { . self.set_len(0); . } . 43,632 ( 0.00%) DrainFilter { vec: self, idx: 0, del: 0, old_len, pred: filter, panic_flag: false } . } . } . . /// Extend implementation that copies elements out of references before pushing them onto the Vec. . /// . /// This implementation is specialized for slice iterators, where it uses [`copy_from_slice`] to . /// append the entire slice at once. . /// . /// [`copy_from_slice`]: slice::copy_from_slice . #[cfg(not(no_global_oom_handling))] . #[stable(feature = "extend_ref", since = "1.2.0")] . impl<'a, T: Copy + 'a, A: Allocator + 'a> Extend<&'a T> for Vec { 82,896 ( 0.00%) fn extend>(&mut self, iter: I) { . self.spec_extend(iter.into_iter()) 62,172 ( 0.00%) } . . #[inline] . fn extend_one(&mut self, &item: &'a T) { . self.push(item); . } . . #[inline] . fn extend_reserve(&mut self, additional: usize) { -- line 2783 ---------------------------------------- -- line 2803 ---------------------------------------- . #[inline] . fn cmp(&self, other: &Self) -> Ordering { . Ord::cmp(&**self, &**other) . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . unsafe impl<#[may_dangle] T, A: Allocator> Drop for Vec { 5,441,360 ( 0.01%) fn drop(&mut self) { . unsafe { . // use drop for [T] . // use a raw slice to refer to the elements of the vector as weakest necessary type; . // could avoid questions of validity in certain cases 2,472,079 ( 0.01%) ptr::drop_in_place(ptr::slice_from_raw_parts_mut(self.as_mut_ptr(), self.len)) . } . // RawVec handles deallocation 6,415,852 ( 0.02%) } . } . . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_default_impls", issue = "87864")] . impl const Default for Vec { . /// Creates an empty `Vec`. . fn default() -> Vec { . Vec::new() -- line 2827 ---------------------------------------- -- line 2976 ---------------------------------------- . /// newly-allocated buffer with exactly the right capacity. . /// . /// # Examples . /// . /// ``` . /// assert_eq!(Box::from(vec![1, 2, 3]), vec![1, 2, 3].into_boxed_slice()); . /// ``` . fn from(v: Vec) -> Self { 4 ( 0.00%) v.into_boxed_slice() . } . } . . #[cfg(not(no_global_oom_handling))] . #[stable(feature = "rust1", since = "1.0.0")] . impl From<&str> for Vec { . /// Allocate a `Vec` and fill it with a UTF-8 string. . /// -- line 2992 ---------------------------------------- 39,176,091 ( 0.10%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/slice/iter.rs -------------------------------------------------------------------------------- Ir -- line 91 ---------------------------------------- . assume(!ptr.is_null()); . . let end = if mem::size_of::() == 0 { . (ptr as *const u8).wrapping_add(slice.len()) as *const T . } else { . ptr.add(slice.len()) . }; . 35,918,918 ( 0.09%) Self { ptr: NonNull::new_unchecked(ptr as *mut T), end, _marker: PhantomData } . } . } . . /// Views the underlying data as a subslice of the original data. . /// . /// This has the same lifetime as the original slice, and so the . /// iterator can continue to be used while this exists. . /// -- line 107 ---------------------------------------- -- line 122 ---------------------------------------- . /// // Next, we move to the second element of the slice: . /// iter.next(); . /// // Now `as_slice` returns "[2, 3]": . /// println!("{:?}", iter.as_slice()); . /// ``` . #[must_use] . #[stable(feature = "iter_to_slice", since = "1.4.0")] . pub fn as_slice(&self) -> &'a [T] { 125,648 ( 0.00%) self.make_slice() . } . } . . iterator! {struct Iter -> *const T, &'a T, const, {/* no mut */}, { . fn is_sorted_by(self, mut compare: F) -> bool . where . Self: Sized, . F: FnMut(&Self::Item, &Self::Item) -> Option, -- line 138 ---------------------------------------- -- line 141 ---------------------------------------- . compare(&&w[0], &&w[1]).map(|o| o != Ordering::Greater).unwrap_or(false) . }) . } . }} . . #[stable(feature = "rust1", since = "1.0.0")] . impl Clone for Iter<'_, T> { . fn clone(&self) -> Self { 320,910 ( 0.00%) Iter { ptr: self.ptr, end: self.end, _marker: self._marker } . } . } . . #[stable(feature = "slice_iter_as_ref", since = "1.13.0")] . impl AsRef<[T]> for Iter<'_, T> { . fn as_ref(&self) -> &[T] { . self.as_slice() . } -- line 157 ---------------------------------------- -- line 226 ---------------------------------------- . assume(!ptr.is_null()); . . let end = if mem::size_of::() == 0 { . (ptr as *mut u8).wrapping_add(slice.len()) as *mut T . } else { . ptr.add(slice.len()) . }; . 38,607 ( 0.00%) Self { ptr: NonNull::new_unchecked(ptr), end, _marker: PhantomData } . } . } . . /// Views the underlying data as a subslice of the original data. . /// . /// To avoid creating `&mut` references that alias, this is forced . /// to consume the iterator. . /// -- line 242 ---------------------------------------- -- line 1711 ---------------------------------------- . v: &'a [T], . rem: &'a [T], . chunk_size: usize, . } . . impl<'a, T> ChunksExact<'a, T> { . #[inline] . pub(super) fn new(slice: &'a [T], chunk_size: usize) -> Self { 58 ( 0.00%) let rem = slice.len() % chunk_size; 87 ( 0.00%) let fst_len = slice.len() - rem; . // SAFETY: 0 <= fst_len <= slice.len() by construction above . let (fst, snd) = unsafe { slice.split_at_unchecked(fst_len) }; . Self { v: fst, rem: snd, chunk_size } . } . . /// Returns the remainder of the original slice that is not going to be . /// returned by the iterator. The returned slice has at most `chunk_size-1` . /// elements. -- line 1728 ---------------------------------------- -- line 1742 ---------------------------------------- . } . . #[stable(feature = "chunks_exact", since = "1.31.0")] . impl<'a, T> Iterator for ChunksExact<'a, T> { . type Item = &'a [T]; . . #[inline] . fn next(&mut self) -> Option<&'a [T]> { 14,476 ( 0.00%) if self.v.len() < self.chunk_size { . None . } else { . let (fst, snd) = self.v.split_at(self.chunk_size); . self.v = snd; . Some(fst) . } . } . -- line 1758 ---------------------------------------- -- line 2024 ---------------------------------------- . num: usize, . marker: PhantomData<&'a [T; N]>, . } . . impl<'a, T: 'a, const N: usize> ArrayWindows<'a, T, N> { . #[inline] . pub(super) fn new(slice: &'a [T]) -> Self { . let num_windows = slice.len().saturating_sub(N - 1); 25 ( 0.00%) Self { slice_head: slice.as_ptr(), num: num_windows, marker: PhantomData } . } . } . . #[unstable(feature = "array_windows", issue = "75027")] . impl<'a, T, const N: usize> Iterator for ArrayWindows<'a, T, N> { . type Item = &'a [T; N]; . . #[inline] . fn next(&mut self) -> Option { 141,398 ( 0.00%) if self.num == 0 { . return None; . } . // SAFETY: . // This is safe because it's indexing into a slice guaranteed to be length > N. . let ret = unsafe { &*self.slice_head.cast::<[T; N]>() }; . // SAFETY: Guaranteed that there are at least 1 item remaining otherwise . // earlier branch would've been hit . self.slice_head = unsafe { self.slice_head.add(1) }; -- line 2050 ---------------------------------------- 10,427,928 ( 0.03%) -------------------------------------------------------------------------------- -- 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)] 20,810,640 ( 0.05%) fn intern_ty(&self, kind: TyKind<'tcx>) -> Ty<'tcx> { . self.type_ 13,006,650 ( 0.03%) .intern(kind, |kind| { 549,000 ( 0.00%) let flags = super::flags::FlagComputation::for_kind(&kind); . . let ty_struct = TyS { 1,098,000 ( 0.00%) kind, . flags: flags.flags, . outer_exclusive_binder: flags.outer_exclusive_binder, . }; . . Interned(self.arena.alloc(ty_struct)) . }) . .0 23,411,970 ( 0.06%) } . . #[inline(never)] 4,637,232 ( 0.01%) fn intern_predicate( . &self, . kind: Binder<'tcx, PredicateKind<'tcx>>, . ) -> &'tcx PredicateInner<'tcx> { . self.predicate 4,057,578 ( 0.01%) .intern(kind, |kind| { 1,049,310 ( 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 5,216,886 ( 0.01%) } . } . . 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) { 1,774,713 ( 0.00%) 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) . } . 1,363,563 ( 0.00%) pub fn get(&self, id: hir::HirId) -> Option<&V> { 272,391 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, id); 272,391 ( 0.00%) self.data.get(&id.local_id) 1,093,760 ( 0.00%) } . . 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; . 15,528 ( 0.00%) fn index(&self, key: hir::HirId) -> &V { . self.get(key).expect("LocalTableInContext: key not found") 10,352 ( 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> { 50,346 ( 0.00%) pub fn new(hir_owner: LocalDefId) -> TypeckResults<'tcx> { 595,761 ( 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(), . } 50,346 ( 0.00%) } . . /// Returns the final resolution of a `QPath` in an `Expr` or `Pat` node. 308,136 ( 0.00%) pub fn qpath_res(&self, qpath: &hir::QPath<'_>, id: hir::HirId) -> Res { 205,424 ( 0.00%) match *qpath { 468,498 ( 0.00%) hir::QPath::Resolved(_, ref path) => path.res, . hir::QPath::TypeRelative(..) | hir::QPath::LangItem(..) => self . .type_dependent_def(id) 147,774 ( 0.00%) .map_or(Res::Err, |(kind, def_id)| Res::Def(kind, def_id)), . } 513,560 ( 0.00%) } . 2,488 ( 0.00%) pub fn type_dependent_defs( . &self, . ) -> LocalTableInContext<'_, Result<(DefKind, DefId), ErrorReported>> { 16,697 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.type_dependent_defs } 2,488 ( 0.00%) } . 33,993 ( 0.00%) pub fn type_dependent_def(&self, id: HirId) -> Option<(DefKind, DefId)> { 70,304 ( 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()) 67,986 ( 0.00%) } . 46,728 ( 0.00%) pub fn type_dependent_def_id(&self, id: HirId) -> Option { . self.type_dependent_def(id).map(|(_, def_id)| def_id) 46,728 ( 0.00%) } . 111,665 ( 0.00%) pub fn type_dependent_defs_mut( . &mut self, . ) -> LocalTableInContextMut<'_, Result<(DefKind, DefId), ErrorReported>> { 111,665 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.type_dependent_defs } 111,665 ( 0.00%) } . . pub fn field_indices(&self) -> LocalTableInContext<'_, usize> { 21,870 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.field_indices } 4,317 ( 0.00%) } . . pub fn field_indices_mut(&mut self) -> LocalTableInContextMut<'_, usize> { 25,578 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.field_indices } 12,789 ( 0.00%) } . . pub fn user_provided_types(&self) -> LocalTableInContext<'_, CanonicalUserType<'tcx>> { 57,034 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.user_provided_types } 28,517 ( 0.00%) } . . pub fn user_provided_types_mut( . &mut self, . ) -> LocalTableInContextMut<'_, CanonicalUserType<'tcx>> { 15,072 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.user_provided_types } 7,536 ( 0.00%) } . . pub fn node_types(&self) -> LocalTableInContext<'_, Ty<'tcx>> { 239,796 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.node_types } 119,898 ( 0.00%) } . . pub fn node_types_mut(&mut self) -> LocalTableInContextMut<'_, Ty<'tcx>> { 417,390 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.node_types } 208,695 ( 0.00%) } . 1,866,114 ( 0.00%) pub fn node_type(&self, id: hir::HirId) -> Ty<'tcx> { 311,019 ( 0.00%) self.node_type_opt(id).unwrap_or_else(|| { . bug!("node_type: no type for node `{}`", tls::with(|tcx| tcx.hir().node_to_string(id))) . }) 1,555,095 ( 0.00%) } . 407,209 ( 0.00%) pub fn node_type_opt(&self, id: hir::HirId) -> Option> { 407,209 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, id); . self.node_types.get(&id.local_id).cloned() 814,418 ( 0.00%) } . . pub fn node_substs_mut(&mut self) -> LocalTableInContextMut<'_, SubstsRef<'tcx>> { 55,336 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.node_substs } 27,668 ( 0.00%) } . 132,979 ( 0.00%) pub fn node_substs(&self, id: hir::HirId) -> SubstsRef<'tcx> { 132,979 ( 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()) 265,958 ( 0.00%) } . 89,465 ( 0.00%) pub fn node_substs_opt(&self, id: hir::HirId) -> Option> { 89,465 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, id); . self.node_substs.get(&id.local_id).cloned() 178,930 ( 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> { 44,876 ( 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> { 327,871 ( 0.00%) self.node_type(expr.hir_id) . } . . pub fn expr_ty_opt(&self, expr: &hir::Expr<'_>) -> Option> { 353,555 ( 0.00%) self.node_type_opt(expr.hir_id) . } . . pub fn adjustments(&self) -> LocalTableInContext<'_, Vec>> { 171,688 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.adjustments } 85,844 ( 0.00%) } . . pub fn adjustments_mut( . &mut self, . ) -> LocalTableInContextMut<'_, Vec>> { 255,198 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.adjustments } 127,599 ( 0.00%) } . 150,596 ( 0.00%) pub fn expr_adjustments(&self, expr: &hir::Expr<'_>) -> &[ty::adjustment::Adjustment<'tcx>] { 301,192 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, expr.hir_id); . self.adjustments.get(&expr.hir_id.local_id).map_or(&[], |a| &a[..]) 301,192 ( 0.00%) } . . /// Returns the type of `expr`, considering any `Adjustment` . /// entry recorded for that expression. 13,470 ( 0.00%) pub fn expr_ty_adjusted(&self, expr: &hir::Expr<'_>) -> Ty<'tcx> { 2,694 ( 0.00%) self.expr_adjustments(expr).last().map_or_else(|| self.expr_ty(expr), |adj| adj.target) 3,300 ( 0.00%) } . 2,365 ( 0.00%) pub fn expr_ty_adjusted_opt(&self, expr: &hir::Expr<'_>) -> Option> { 473 ( 0.00%) self.expr_adjustments(expr).last().map(|adj| adj.target).or_else(|| self.expr_ty_opt(expr)) 1,312 ( 0.00%) } . 14,209 ( 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. 28,418 ( 0.00%) if let hir::ExprKind::Path(_) = expr.kind { . return false; . } . 30,618 ( 0.00%) matches!(self.type_dependent_defs().get(expr.hir_id), Some(Ok((DefKind::AssocFn, _)))) 28,418 ( 0.00%) } . 78,735 ( 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 . }) 104,980 ( 0.00%) } . . pub fn pat_binding_modes(&self) -> LocalTableInContext<'_, BindingMode> { 70,553 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.pat_binding_modes } 22,154 ( 0.00%) } . . pub fn pat_binding_modes_mut(&mut self) -> LocalTableInContextMut<'_, BindingMode> { 34,736 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.pat_binding_modes } 17,368 ( 0.00%) } . . pub fn pat_adjustments(&self) -> LocalTableInContext<'_, Vec>> { 126,256 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.pat_adjustments } 63,128 ( 0.00%) } . . pub fn pat_adjustments_mut(&mut self) -> LocalTableInContextMut<'_, Vec>> { 43,994 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.pat_adjustments } 21,997 ( 0.00%) } . . /// For a given closure, returns the iterator of `ty::CapturedPlace`s that are captured . /// by the closure. 14,688 ( 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() 18,360 ( 0.00%) } . . pub fn closure_kind_origins(&self) -> LocalTableInContext<'_, (Span, HirPlace<'tcx>)> { 4,722 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.closure_kind_origins } 2,361 ( 0.00%) } . . pub fn closure_kind_origins_mut( . &mut self, . ) -> LocalTableInContextMut<'_, (Span, HirPlace<'tcx>)> { 4 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.closure_kind_origins } 2 ( 0.00%) } . . pub fn liberated_fn_sigs(&self) -> LocalTableInContext<'_, ty::FnSig<'tcx>> { 15,074 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.liberated_fn_sigs } 7,537 ( 0.00%) } . . pub fn liberated_fn_sigs_mut(&mut self) -> LocalTableInContextMut<'_, ty::FnSig<'tcx>> { 10,352 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.liberated_fn_sigs } 5,176 ( 0.00%) } . . pub fn fru_field_types(&self) -> LocalTableInContext<'_, Vec>> { 4,722 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.fru_field_types } 2,361 ( 0.00%) } . . pub fn fru_field_types_mut(&mut self) -> LocalTableInContextMut<'_, Vec>> { . LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.fru_field_types } . } . 1,980 ( 0.00%) pub fn is_coercion_cast(&self, hir_id: hir::HirId) -> bool { 660 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, hir_id); . self.coercion_casts.contains(&hir_id.local_id) 1,320 ( 0.00%) } . . pub fn set_coercion_cast(&mut self, id: ItemLocalId) { . self.coercion_casts.insert(id); . } . . pub fn coercion_casts(&self) -> &ItemLocalSet { 2,361 ( 0.00%) &self.coercion_casts 2,361 ( 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>; . 7,770 ( 0.00%) #[derive(Clone, Debug, TyEncodable, TyDecodable, HashStable, TypeFoldable, Lift)] . pub struct CanonicalUserTypeAnnotation<'tcx> { . pub user_ty: CanonicalUserType<'tcx>, . pub span: Span, 3,932 ( 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. 12,890 ( 0.00%) pub fn is_identity(&self) -> bool { 25,780 ( 0.00%) match self.value { . UserType::Ty(_) => false, . UserType::TypeOf(_, user_substs) => { 12,890 ( 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() { 22,074 ( 0.00%) GenericArgKind::Type(ty) => match ty.kind() { . ty::Bound(debruijn, b) => { . // We only allow a `ty::INNERMOST` index in substitutions. 10,364 ( 0.00%) assert_eq!(*debruijn, ty::INNERMOST); . cvar == b.var . } . _ => false, . }, . 9,776 ( 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, . }, . } . }) . } . } 25,780 ( 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. 23,592 ( 0.00%) #[derive(Copy, Clone, Debug, PartialEq, TyEncodable, TyDecodable)] 161,810 ( 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> { 120,680 ( 0.00%) pub fn typeck_opt_const_arg( . self, . def: ty::WithOptConstParam, . ) -> &'tcx TypeckResults<'tcx> { 48,272 ( 0.00%) if let Some(param_did) = def.const_param_did { . self.typeck_const_arg((def.did, param_did)) . } else { . self.typeck(def.did) . } 96,544 ( 0.00%) } . 7,824 ( 0.00%) pub fn alloc_steal_thir(self, thir: Thir<'tcx>) -> &'tcx Steal> { 2,608 ( 0.00%) self.arena.alloc(Steal::new(thir)) 10,432 ( 0.00%) } . 52,160 ( 0.00%) pub fn alloc_steal_mir(self, mir: Body<'tcx>) -> &'tcx Steal> { 10,432 ( 0.00%) self.arena.alloc(Steal::new(mir)) 73,024 ( 0.00%) } . 10,432 ( 0.00%) pub fn alloc_steal_promoted( . self, . promoted: IndexVec>, . ) -> &'tcx Steal>> { 2,608 ( 0.00%) self.arena.alloc(Steal::new(promoted)) 13,040 ( 0.00%) } . 3,447 ( 0.00%) pub fn alloc_adt_def( . self, . did: DefId, . kind: AdtKind, . variants: IndexVec, . repr: ReprOptions, . ) -> &'tcx ty::AdtDef { 6,128 ( 0.00%) self.intern_adt_def(ty::AdtDef::new(self, did, kind, variants, repr)) 1,532 ( 0.00%) } . . /// Allocates a read-only byte or string literal for `mir::interpret`. 10 ( 0.00%) pub fn allocate_bytes(self, bytes: &[u8]) -> interpret::AllocId { . // Create an allocation that just contains these bytes. 2 ( 0.00%) let alloc = interpret::Allocation::from_bytes_byte_aligned_immutable(bytes); 26 ( 0.00%) let alloc = self.intern_const_alloc(alloc); . self.create_memory_alloc(alloc) 10 ( 0.00%) } . . /// 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? 62,592 ( 0.00%) pub fn layout_scalar_valid_range(self, def_id: DefId) -> (Bound, Bound) { 31,296 ( 0.00%) let attrs = self.get_attrs(def_id); 133,008 ( 0.00%) let get = |name| { 31,296 ( 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); 1,440 ( 0.00%) if let Some( . &[ . ast::NestedMetaItem::Literal(ast::Lit { 720 ( 0.00%) kind: ast::LitKind::Int(a, _), .. . }), . ], 360 ( 0.00%) ) = 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 . } 156,480 ( 0.00%) }; 46,944 ( 0.00%) ( 46,944 ( 0.00%) get(sym::rustc_layout_scalar_valid_range_start), 23,472 ( 0.00%) get(sym::rustc_layout_scalar_valid_range_end), . ) 62,592 ( 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 }) . } . 128,464 ( 0.00%) pub fn consider_optimizing String>(self, msg: T) -> bool { 18,352 ( 0.00%) let cname = self.crate_name(LOCAL_CRATE); 136,685 ( 0.00%) self.sess.consider_optimizing(cname.as_str(), msg) 146,816 ( 0.00%) } . . /// Obtain all lang items of this crate and all dependencies (recursively) 4,479,020 ( 0.01%) pub fn lang_items(self) -> &'tcx rustc_hir::lang_items::LanguageItems { . self.get_lang_items(()) 5,758,740 ( 0.01%) } . . /// 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. 1,470 ( 0.00%) pub fn get_diagnostic_item(self, name: Symbol) -> Option { . self.all_diagnostic_items(()).name_to_id.get(&name).copied() 1,680 ( 0.00%) } . . /// Obtain the diagnostic item's name 179,060 ( 0.00%) pub fn get_diagnostic_name(self, id: DefId) -> Option { . self.diagnostic_items(id.krate).id_to_name.get(&id).copied() 204,640 ( 0.00%) } . . /// Check whether the diagnostic item with the given `name` has the given `DefId`. 138,803 ( 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) 158,632 ( 0.00%) } . 43,435 ( 0.00%) pub fn stability(self) -> &'tcx stability::Index<'tcx> { . self.stability_index(()) 55,845 ( 0.00%) } . 1,757,763 ( 0.00%) pub fn features(self) -> &'tcx rustc_feature::Features { . self.features_query(()) 2,008,872 ( 0.01%) } . 275,129 ( 0.00%) pub fn def_key(self, id: DefId) -> rustc_hir::definitions::DefKey { . // Accessing the DefKey is ok, since it is part of DefPathHash. 2,289,878 ( 0.01%) if let Some(id) = id.as_local() { . self.untracked_resolutions.definitions.def_key(id) . } else { 1,776,966 ( 0.00%) self.untracked_resolutions.cstore.def_key(id) . } 283,056 ( 0.00%) } . . /// 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`. 284 ( 0.00%) pub fn def_path(self, id: DefId) -> rustc_hir::definitions::DefPath { . // Accessing the DefPath is ok, since it is part of DefPathHash. 426 ( 0.00%) if let Some(id) = id.as_local() { 87 ( 0.00%) self.untracked_resolutions.definitions.def_path(id) . } else { 565 ( 0.00%) self.untracked_resolutions.cstore.def_path(id) . } 426 ( 0.00%) } . . #[inline] . pub fn def_path_hash(self, def_id: DefId) -> rustc_hir::definitions::DefPathHash { . // Accessing the DefPathHash is ok, it is incr. comp. stable. 42,217 ( 0.00%) if let Some(def_id) = def_id.as_local() { . self.untracked_resolutions.definitions.def_path_hash(def_id) . } else { 28,146 ( 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 { 109,254 ( 0.00%) &*self.untracked_resolutions.cstore 54,627 ( 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> { 26,046 ( 0.00%) let resolutions = &self.gcx.untracked_resolutions; 104,204 ( 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.) 4,722 ( 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=...` . 7,083 ( 0.00%) if self.features().nll { . return BorrowckMode::Mir; . } . 2,361 ( 0.00%) self.sess.opts.borrowck_mode 9,444 ( 0.00%) } . . /// If `true`, we should use lazy normalization for constants, otherwise . /// we still evaluate them eagerly. . #[inline] . pub fn lazy_normalization(self) -> bool { 693 ( 0.00%) let features = self.features(); . // Note: We only use lazy normalization for generic const expressions. 105 ( 0.00%) features.generic_const_exprs . } . . #[inline] . pub fn local_crate_exports_generics(self) -> bool { . debug_assert!(self.sess.opts.share_generics()); . 17,588 ( 0.00%) self.sess.crate_types().iter().any(|crate_type| { 29,318 ( 0.00%) match crate_type { . CrateType::Executable . | CrateType::Staticlib . | CrateType::ProcMacro . | CrateType::Cdylib => false, . . // FIXME rust-lang/rust#64319, rust-lang/rust#64872: . // We want to block export of generics from dylibs, . // but we must fix rust-lang/rust#65890 before we can -- line 1450 ---------------------------------------- -- line 1540 ---------------------------------------- . // FIXME(#42706) -- in some cases, we could do better here. . return true; . } . false . } . . /// Determines whether identifiers in the assembly have strict naming rules. . /// Currently, only NVPTX* targets need it. 54,650 ( 0.00%) pub fn has_strict_asm_symbol_naming(self) -> bool { 54,650 ( 0.00%) self.sess.target.arch.contains("nvptx") 109,300 ( 0.00%) } . . /// Returns `&'static core::panic::Location<'static>`. 17,316 ( 0.00%) pub fn caller_location_ty(self) -> Ty<'tcx> { . self.mk_imm_ref( 2,886 ( 0.00%) self.lifetimes.re_static, . self.type_of(self.require_lang_item(LangItem::PanicLocation, None)) 5,772 ( 0.00%) .subst(self, self.mk_substs([self.lifetimes.re_static.into()].iter())), . ) 17,316 ( 0.00%) } . . /// Returns a displayable description and article for the given `def_id` (e.g. `("a", "struct")`). 17,820 ( 0.00%) pub fn article_and_description(self, def_id: DefId) -> (&'static str, &'static str) { 12,960 ( 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"), . }, 29,160 ( 0.00%) def_kind => (def_kind.article(), def_kind.descr(def_id)), . } 14,580 ( 0.00%) } . 368,207 ( 0.00%) pub fn type_length_limit(self) -> Limit { . self.limits(()).type_length_limit 420,808 ( 0.00%) } . 1,640,205 ( 0.00%) pub fn recursion_limit(self) -> Limit { . self.limits(()).recursion_limit 1,874,520 ( 0.00%) } . 901,880 ( 0.00%) pub fn move_size_limit(self) -> Limit { . self.limits(()).move_size_limit 1,030,720 ( 0.00%) } . 22,519 ( 0.00%) pub fn const_eval_limit(self) -> Limit { . self.limits(()).const_eval_limit 25,736 ( 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 1614 ---------------------------------------- . fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option; . } . . macro_rules! nop_lift { . ($set:ident; $ty:ty => $lifted:ty) => { . impl<'a, 'tcx> Lift<'tcx> for $ty { . type Lifted = $lifted; . fn lift_to_tcx(self, tcx: TyCtxt<'tcx>) -> Option { 41,256 ( 0.00%) if tcx.interners.$set.contains_pointer_to(&Interned(self)) { . Some(unsafe { mem::transmute(self) }) . } else { . None . } . } . } . }; . } -- line 1630 ---------------------------------------- -- 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`. 2 ( 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(); 414,777 ( 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(); 1,755,245 ( 0.00%) 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 1791 ---------------------------------------- . . /// Allows access to the current `ImplicitCtxt`. . /// Panics if there is no `ImplicitCtxt` available. . #[inline] . pub fn with_context(f: F) -> R . where . F: for<'a, 'tcx> FnOnce(&ImplicitCtxt<'a, 'tcx>) -> R, . { 18,123 ( 0.00%) with_context_opt(|opt_context| f(opt_context.expect("no ImplicitCtxt stored in tls"))) . } . . /// Allows access to the current `ImplicitCtxt` whose tcx field is the same as the tcx argument . /// passed in. This means the closure is given an `ImplicitCtxt` with the same `'tcx` lifetime . /// as the `TyCtxt` passed in. . /// 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 { 826,091 ( 0.00%) assert!(ptr_eq(context.tcx.gcx, tcx.gcx)); . let context: &ImplicitCtxt<'_, '_> = mem::transmute(context); 808,820 ( 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> { 2,374,019 ( 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)`. 1,417,500 ( 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>> { 425,135 ( 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)`. 229,372 ( 0.00%) self.0.kind.hash(s) . } . } . . impl<'tcx, T> Borrow<[T]> for Interned<'tcx, List> { . fn borrow<'a>(&'a self) -> &'a [T] { 2,457,738 ( 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)`. 361,200 ( 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 { 677,112 ( 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)`. 197,126 ( 0.00%) self.0.hash(s) . } . } . . impl<'tcx> TyCtxt<'tcx> { 5,866,096 ( 0.02%) pub fn $method(self, v: $ty) -> &'tcx $ty { 3,050,634 ( 0.01%) self.interners.$name.intern(v, |v| { 58,259 ( 0.00%) Interned(self.interners.arena.alloc(v)) . }).0 6,560,910 ( 0.02%) } . })+ . } . } . . 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> { 27,002,011 ( 0.07%) $(pub fn $method(self, v: &[$ty]) -> &'tcx List<$ty> { . self.interners.$field.intern_ref(v, || { . Interned(List::from_arena(&*self.arena, v)) . }).0 24,155,811 ( 0.06%) })+ . } . ); . } . . 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 2129 ---------------------------------------- . /// unsafe. . pub fn safe_to_unsafe_fn_ty(self, sig: PolyFnSig<'tcx>) -> Ty<'tcx> { . assert_eq!(sig.unsafety(), hir::Unsafety::Normal); . self.mk_fn_ptr(sig.map_bound(|sig| ty::FnSig { unsafety: hir::Unsafety::Unsafe, ..sig })) . } . . /// Given the def_id of a Trait `trait_def_id` and the name of an associated item `assoc_name` . /// returns true if the `trait_def_id` defines an associated item of name `assoc_name`. 12 ( 0.00%) pub fn trait_may_define_assoc_type(self, trait_def_id: DefId, assoc_name: Ident) -> bool { . self.super_traits_of(trait_def_id).any(|trait_did| { . self.associated_items(trait_did) . .find_by_name_and_kind(self, assoc_name, ty::AssocKind::Type, trait_did) . .is_some() . }) 9 ( 0.00%) } . . /// Computes the def-ids of the transitive supertraits of `trait_def_id`. This (intentionally) . /// does not compute the full elaborated super-predicates but just the set of def-ids. It is used . /// to identify which traits may define a given associated type to help avoid cycle errors. . /// Returns a `DefId` iterator. . fn super_traits_of(self, trait_def_id: DefId) -> impl Iterator + 'tcx { . let mut set = FxHashSet::default(); 2 ( 0.00%) let mut stack = vec![trait_def_id]; . . set.insert(trait_def_id); . 9 ( 0.00%) iter::from_fn(move || -> Option { 4 ( 0.00%) let trait_did = stack.pop()?; 2 ( 0.00%) let generic_predicates = self.super_predicates_of(trait_did); . . for (predicate, _) in generic_predicates.predicates { 3 ( 0.00%) if let ty::PredicateKind::Trait(data) = predicate.kind().skip_binder() { 2 ( 0.00%) if set.insert(data.def_id()) { . stack.push(data.def_id()); . } . } . } . . Some(trait_did) . }) . } -- line 2169 ---------------------------------------- -- line 2188 ---------------------------------------- . self.mk_fn_sig(params_iter, s.output(), s.c_variadic, unsafety, abi::Abi::Rust) . }) . } . . /// 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> { 753,300 ( 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> { 18,540,987 ( 0.05%) self.interners.intern_ty(st) . } . . #[inline] . pub fn mk_predicate(self, binder: Binder<'tcx, PredicateKind<'tcx>>) -> Predicate<'tcx> { 6,285,899 ( 0.02%) let inner = self.interners.intern_predicate(binder); . Predicate { inner } . } . . #[inline] 4,665,848 ( 0.01%) pub fn reuse_or_mk_predicate( . self, . pred: Predicate<'tcx>, . binder: Binder<'tcx, PredicateKind<'tcx>>, . ) -> Predicate<'tcx> { 263,280 ( 0.00%) if pred.kind() != binder { self.mk_predicate(binder) } else { pred } 4,665,848 ( 0.01%) } . . pub fn mk_mach_int(self, tm: IntTy) -> Ty<'tcx> { 1,444 ( 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, . } 1,444 ( 0.00%) } . . pub fn mk_mach_uint(self, tm: UintTy) -> Ty<'tcx> { 4,933 ( 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, . } 4,933 ( 0.00%) } . . pub fn mk_mach_float(self, tm: FloatTy) -> Ty<'tcx> { 4 ( 0.00%) match tm { . FloatTy::F32 => self.types.f32, . FloatTy::F64 => self.types.f64, . } 4 ( 0.00%) } . . #[inline] . pub fn mk_static_str(self) -> Ty<'tcx> { 4,920 ( 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)) . } . . #[inline] . pub fn mk_foreign(self, def_id: DefId) -> Ty<'tcx> { . self.mk_ty(Foreign(def_id)) . } . 600 ( 0.00%) fn mk_generic_adt(self, wrapper_def_id: DefId, ty_param: Ty<'tcx>) -> Ty<'tcx> { . let adt_def = self.adt_def(wrapper_def_id); . let substs = 1,125 ( 0.00%) InternalSubsts::for_item(self, wrapper_def_id, |param, substs| match param.kind { . GenericParamDefKind::Lifetime | GenericParamDefKind::Const { .. } => bug!(), 75 ( 0.00%) GenericParamDefKind::Type { has_default, .. } => { 300 ( 0.00%) if param.index == 0 { . ty_param.into() . } else { 75 ( 0.00%) assert!(has_default); 225 ( 0.00%) self.type_of(param.def_id).subst(self, substs).into() . } . } . }); 75 ( 0.00%) self.mk_ty(Adt(adt_def, substs)) 600 ( 0.00%) } . . #[inline] . pub fn mk_box(self, ty: Ty<'tcx>) -> Ty<'tcx> { 375 ( 0.00%) let def_id = self.require_lang_item(LangItem::OwnedBox, None); 664 ( 0.00%) self.mk_generic_adt(def_id, ty) . } . . #[inline] . pub fn mk_lang_item(self, ty: Ty<'tcx>, item: LangItem) -> Option> { . let def_id = self.lang_items().require(item).ok()?; . Some(self.mk_generic_adt(def_id, ty)) . } . -- line 2293 ---------------------------------------- -- line 2329 ---------------------------------------- . } . . #[inline] . pub fn mk_imm_ptr(self, ty: Ty<'tcx>) -> Ty<'tcx> { . self.mk_ptr(TypeAndMut { ty, mutbl: hir::Mutability::Not }) . } . . #[inline] 23,336 ( 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))) 23,824 ( 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> { 9,400 ( 0.00%) let kinds: Vec<_> = ts.iter().map(|&t| GenericArg::from(t)).collect(); 11,333 ( 0.00%) self.mk_ty(Tuple(self.intern_substs(&kinds))) . } . . pub fn mk_tup], Ty<'tcx>>>(self, iter: I) -> I::Output { 212,824 ( 0.00%) iter.intern_with(|ts| { 73,102 ( 0.00%) let kinds: Vec<_> = ts.iter().map(|&t| GenericArg::from(t)).collect(); 186,120 ( 0.00%) self.mk_ty(Tuple(self.intern_substs(&kinds))) 191,439 ( 0.00%) }) . } . . #[inline] . pub fn mk_unit(self) -> Ty<'tcx> { 17,815 ( 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> { 41,930 ( 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> { 3,624 ( 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 }) . } . 47,579 ( 0.00%) pub fn mk_param_from_def(self, param: &ty::GenericParamDef) -> GenericArg<'tcx> { 23,647 ( 0.00%) match param.kind { . GenericParamDefKind::Lifetime => { 31,014 ( 0.00%) self.mk_region(ty::ReEarlyBound(param.to_early_bound_region_data())).into() . } 3,256 ( 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() . } . } 47,579 ( 0.00%) } . . #[inline] . pub fn mk_opaque(self, def_id: DefId, substs: SubstsRef<'tcx>) -> Ty<'tcx> { . self.mk_ty(Opaque(def_id, substs)) . } . 11,179 ( 0.00%) pub fn mk_place_field(self, place: Place<'tcx>, f: Field, ty: Ty<'tcx>) -> Place<'tcx> { 11,179 ( 0.00%) self.mk_place_elem(place, PlaceElem::Field(f, ty)) 22,358 ( 0.00%) } . 593 ( 0.00%) pub fn mk_place_deref(self, place: Place<'tcx>) -> Place<'tcx> { 1,779 ( 0.00%) self.mk_place_elem(place, PlaceElem::Deref) 1,186 ( 0.00%) } . 4,199 ( 0.00%) pub fn mk_place_downcast( . self, . place: Place<'tcx>, . adt_def: &'tcx AdtDef, . variant_index: VariantIdx, . ) -> Place<'tcx> { 4,199 ( 0.00%) self.mk_place_elem( . place, 8,398 ( 0.00%) PlaceElem::Downcast(Some(adt_def.variants[variant_index].name), variant_index), . ) 8,398 ( 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)) . } . 30 ( 0.00%) pub fn mk_place_index(self, place: Place<'tcx>, index: Local) -> Place<'tcx> { 30 ( 0.00%) self.mk_place_elem(place, PlaceElem::Index(index)) 60 ( 0.00%) } . . /// 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. 183,978 ( 0.00%) 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) } 204,420 ( 0.00%) } . 26,187 ( 0.00%) pub fn intern_poly_existential_predicates( . self, . eps: &[ty::Binder<'tcx, ExistentialPredicate<'tcx>>], . ) -> &'tcx List>> { 3,845 ( 0.00%) assert!(!eps.is_empty()); . assert!( . eps.array_windows() 596 ( 0.00%) .all(|[a, b]| a.skip_binder().stable_cmp(self, &b.skip_binder()) . != Ordering::Greater) . ); 15,380 ( 0.00%) self._intern_poly_existential_predicates(eps) 29,928 ( 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. 34,361 ( 0.00%) if preds.is_empty() { . // The macro-generated method below asserts we don't intern an empty slice. . List::empty() . } else { 7,477 ( 0.00%) self._intern_predicates(preds) . } 53,872 ( 0.00%) } . . pub fn intern_type_list(self, ts: &[Ty<'tcx>]) -> &'tcx List> { 469,704 ( 0.00%) if ts.is_empty() { List::empty() } else { self._intern_type_list(ts) } 50,908 ( 0.00%) } . . pub fn intern_substs(self, ts: &[GenericArg<'tcx>]) -> &'tcx List> { 4,369,016 ( 0.01%) if ts.is_empty() { List::empty() } else { self._intern_substs(ts) } 190,972 ( 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> { 150,162 ( 0.00%) if ts.is_empty() { List::empty() } else { self._intern_place_elems(ts) } 86,996 ( 0.00%) } . . pub fn intern_canonical_var_infos( . self, . ts: &[CanonicalVarInfo<'tcx>], . ) -> CanonicalVarInfos<'tcx> { 210,430 ( 0.00%) if ts.is_empty() { List::empty() } else { self._intern_canonical_var_infos(ts) } 684 ( 0.00%) } . . pub fn intern_bound_variable_kinds( . self, . ts: &[ty::BoundVariableKind], . ) -> &'tcx List { 37,949 ( 0.00%) if ts.is_empty() { List::empty() } else { self._intern_bound_variable_kinds(ts) } 43,244 ( 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 { 27,290 ( 0.00%) inputs_and_output: self.intern_type_list(xs), 4,808 ( 0.00%) c_variadic, 7,551 ( 0.00%) unsafety, 4,130 ( 0.00%) abi, 2,440 ( 0.00%) }) . } . . pub fn mk_poly_existential_predicates< . I: InternAs< . [ty::Binder<'tcx, ExistentialPredicate<'tcx>>], . &'tcx List>>, . >, . >( . self, . iter: I, . ) -> I::Output { 14,933 ( 0.00%) iter.intern_with(|xs| self.intern_poly_existential_predicates(xs)) . } . . pub fn mk_predicates], &'tcx List>>>( . self, . iter: I, . ) -> I::Output { 14 ( 0.00%) iter.intern_with(|xs| self.intern_predicates(xs)) . } . . pub fn mk_type_list], &'tcx List>>>(self, iter: I) -> I::Output { 352,022 ( 0.00%) iter.intern_with(|xs| self.intern_type_list(xs)) . } . 3,192 ( 0.00%) pub fn mk_substs], &'tcx List>>>( . self, . iter: I, . ) -> I::Output { 1,890,899 ( 0.00%) iter.intern_with(|xs| self.intern_substs(xs)) 4,256 ( 0.00%) } . . pub fn mk_place_elems], &'tcx List>>>( . self, . iter: I, . ) -> I::Output { 404,094 ( 0.00%) iter.intern_with(|xs| self.intern_place_elems(xs)) . } . 132,713 ( 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())) 265,426 ( 0.00%) } . . pub fn mk_bound_variable_kinds< . I: InternAs<[ty::BoundVariableKind], &'tcx List>, . >( . self, . iter: I, . ) -> I::Output { 150,906 ( 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. 963,872 ( 0.00%) pub fn maybe_lint_level_root_bounded(self, mut id: HirId, bound: HirId) -> HirId { 963,872 ( 0.00%) let hir = self.hir(); . loop { 1,897,737 ( 0.00%) if id == bound { . return bound; . } . 2,533,863 ( 0.01%) 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); 1,484,649 ( 0.00%) if next == id { . bug!("lint traversal reached the root of the crate"); . } . id = next; . } 1,376,960 ( 0.00%) } . 51,576 ( 0.00%) pub fn lint_level_at_node( . self, . lint: &'static Lint, . mut id: hir::HirId, . ) -> (Level, LintLevelSource) { . let sets = self.lint_levels(()); . loop { 434,004 ( 0.00%) if let Some(pair) = sets.level_and_source(lint, id, self.sess) { . return pair; . } 38,194 ( 0.00%) let next = self.hir().get_parent_node(id); 114,582 ( 0.00%) if next == id { . bug!("lint traversal reached the root of the crate"); . } . id = next; . } 51,576 ( 0.00%) } . 3,458 ( 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>), . ) { 28,577 ( 0.00%) let (level, src) = self.lint_level_at_node(lint, hir_id); 7,364 ( 0.00%) struct_lint_level(self.sess, lint, level, src, Some(span.into()), decorate); 1,976 ( 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); . } . 42,378 ( 0.00%) pub fn in_scope_traits(self, id: HirId) -> Option<&'tcx [TraitCandidate]> { 12,108 ( 0.00%) let map = self.in_scope_traits_map(id.owner)?; . let candidates = map.get(&id.local_id)?; 12,108 ( 0.00%) Some(&*candidates) 48,432 ( 0.00%) } . 122,024 ( 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()) 156,888 ( 0.00%) } . 42,804 ( 0.00%) pub fn is_late_bound(self, id: HirId) -> bool { . self.is_late_bound_map(id.owner) 4,089 ( 0.00%) .map_or(false, |(owner, set)| owner == id.owner && set.contains(&id.local_id)) 38,048 ( 0.00%) } . 79,583 ( 0.00%) pub fn object_lifetime_defaults(self, id: HirId) -> Option> { . self.object_lifetime_defaults_map(id.owner) 102,321 ( 0.00%) } . 39,114 ( 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(), . ) 39,114 ( 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 740 ( 0.00%) pub fn is_const_fn(self, def_id: DefId) -> bool { 74 ( 0.00%) if self.is_const_fn_raw(def_id) { 30 ( 0.00%) match self.lookup_const_stability(def_id) { 60 ( 0.00%) Some(stability) if stability.level.is_unstable() => { . // has a `rustc_const_unstable` attribute, check whether the user enabled the . // corresponding feature gate. 8 ( 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 . } 666 ( 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; 368,496 ( 0.00%) fn intern_with(self, f: F) -> Self::Output . where . F: FnOnce(&[T]) -> R, . { 9,133,307 ( 0.02%) E::intern_with(self, f) 215,811 ( 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; 1,082,331 ( 0.00%) 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`. 1,106,091 ( 0.00%) match iter.size_hint() { . (0, Some(0)) => { 6 ( 0.00%) assert!(iter.next().is_none()); . f(&[]) . } . (1, Some(1)) => { . let t0 = iter.next().unwrap(); 159 ( 0.00%) assert!(iter.next().is_none()); 168,563 ( 0.00%) f(&[t0]) . } . (2, Some(2)) => { . let t0 = iter.next().unwrap(); . let t1 = iter.next().unwrap(); 2,994 ( 0.00%) assert!(iter.next().is_none()); 148,363 ( 0.00%) f(&[t0, t1]) . } 7,284 ( 0.00%) _ => f(&iter.collect::>()), . } 932,831 ( 0.00%) } . } . . impl<'a, T, R> InternIteratorElement for &'a T . where . T: Clone + 'a, . { . type Output = R; 40,282 ( 0.00%) fn intern_with, F: FnOnce(&[T]) -> R>(iter: I, f: F) -> Self::Output { . // This code isn't hot. 976 ( 0.00%) f(&iter.cloned().collect::>()) 33,108 ( 0.00%) } . } . . impl InternIteratorElement for Result { . type Output = Result; 3,437,257 ( 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. 2,817,990 ( 0.01%) Ok(match iter.size_hint() { . (0, Some(0)) => { . assert!(iter.next().is_none()); . f(&[]) . } . (1, Some(1)) => { 11,046 ( 0.00%) let t0 = iter.next().unwrap()?; 18 ( 0.00%) assert!(iter.next().is_none()); 212,938 ( 0.00%) f(&[t0]) . } . (2, Some(2)) => { 32,420 ( 0.00%) let t0 = iter.next().unwrap()?; 32,420 ( 0.00%) let t1 = iter.next().unwrap()?; 48,630 ( 0.00%) assert!(iter.next().is_none()); 333,256 ( 0.00%) f(&[t0, t1]) . } 34,366 ( 0.00%) _ => f(&iter.collect::, _>>()?), . }) 3,861,325 ( 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 { 826,091 ( 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 = 49,624 ( 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| { 1 ( 0.00%) assert_eq!(cnum, LOCAL_CRATE); 7 ( 0.00%) tcx.sess.contains_name(tcx.hir().krate_attrs(), sym::panic_runtime) . }; 2 ( 0.00%) providers.is_compiler_builtins = |tcx, cnum| { 1 ( 0.00%) assert_eq!(cnum, LOCAL_CRATE); 7 ( 0.00%) 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()) . }; . } 7,688,252 ( 0.02%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/slice/index.rs -------------------------------------------------------------------------------- Ir -- line 154 ---------------------------------------- . . #[stable(feature = "slice_get_slice_impls", since = "1.15.0")] . unsafe impl SliceIndex<[T]> for usize { . type Output = T; . . #[inline] . fn get(self, slice: &[T]) -> Option<&T> { . // SAFETY: `self` is checked to be in bounds. 10,422,939 ( 0.03%) if self < slice.len() { unsafe { Some(&*self.get_unchecked(slice)) } } else { None } . } . . #[inline] . fn get_mut(self, slice: &mut [T]) -> Option<&mut T> { . // SAFETY: `self` is checked to be in bounds. 41,955,027 ( 0.11%) if self < slice.len() { unsafe { Some(&mut *self.get_unchecked_mut(slice)) } } else { None } . } . . #[inline] . unsafe fn get_unchecked(self, slice: *const [T]) -> *const T { . // SAFETY: the caller guarantees that `slice` is not dangling, so it . // cannot be longer than `isize::MAX`. They also guarantee that . // `self` is in bounds of `slice` so `self` cannot overflow an `isize`, . // so the call to `add` is safe. -- line 176 ---------------------------------------- -- line 181 ---------------------------------------- . unsafe fn get_unchecked_mut(self, slice: *mut [T]) -> *mut T { . // SAFETY: see comments for `get_unchecked` above. . unsafe { slice.as_mut_ptr().add(self) } . } . . #[inline] . fn index(self, slice: &[T]) -> &T { . // N.B., use intrinsic indexing 151,352,099 ( 0.39%) &(*slice)[self] . } . . #[inline] . fn index_mut(self, slice: &mut [T]) -> &mut T { . // N.B., use intrinsic indexing 30,740,227 ( 0.08%) &mut (*slice)[self] . } . } . . #[stable(feature = "slice_get_slice_impls", since = "1.15.0")] . unsafe impl SliceIndex<[T]> for ops::Range { . type Output = [T]; . . #[inline] . fn get(self, slice: &[T]) -> Option<&[T]> { 324,643 ( 0.00%) if self.start > self.end || self.end > slice.len() { . None . } else { . // SAFETY: `self` is checked to be valid and in bounds above. . unsafe { Some(&*self.get_unchecked(slice)) } . } . } . . #[inline] -- line 213 ---------------------------------------- -- line 221 ---------------------------------------- . } . . #[inline] . unsafe fn get_unchecked(self, slice: *const [T]) -> *const [T] { . // SAFETY: the caller guarantees that `slice` is not dangling, so it . // cannot be longer than `isize::MAX`. They also guarantee that . // `self` is in bounds of `slice` so `self` cannot overflow an `isize`, . // so the call to `add` is safe. 3,293,359 ( 0.01%) unsafe { ptr::slice_from_raw_parts(slice.as_ptr().add(self.start), self.end - self.start) } . } . . #[inline] . unsafe fn get_unchecked_mut(self, slice: *mut [T]) -> *mut [T] { . // SAFETY: see comments for `get_unchecked` above. . unsafe { 226,196 ( 0.00%) ptr::slice_from_raw_parts_mut(slice.as_mut_ptr().add(self.start), self.end - self.start) . } . } . . #[inline] . fn index(self, slice: &[T]) -> &[T] { 620,725 ( 0.00%) if self.start > self.end { . slice_index_order_fail(self.start, self.end); 2,678,156 ( 0.01%) } else if self.end > slice.len() { . slice_end_index_len_fail(self.end, slice.len()); . } . // SAFETY: `self` is checked to be valid and in bounds above. . unsafe { &*self.get_unchecked(slice) } . } . . #[inline] . fn index_mut(self, slice: &mut [T]) -> &mut [T] { 54,589 ( 0.00%) if self.start > self.end { . slice_index_order_fail(self.start, self.end); 227,817 ( 0.00%) } else if self.end > slice.len() { . slice_end_index_len_fail(self.end, slice.len()); . } . // SAFETY: `self` is checked to be valid and in bounds above. . unsafe { &mut *self.get_unchecked_mut(slice) } . } . } . . #[stable(feature = "slice_get_slice_impls", since = "1.15.0")] -- line 263 ---------------------------------------- -- line 320 ---------------------------------------- . #[inline] . unsafe fn get_unchecked_mut(self, slice: *mut [T]) -> *mut [T] { . // SAFETY: the caller has to uphold the safety contract for `get_unchecked_mut`. . unsafe { (self.start..slice.len()).get_unchecked_mut(slice) } . } . . #[inline] . fn index(self, slice: &[T]) -> &[T] { 2,827,898 ( 0.01%) if self.start > slice.len() { . slice_start_index_len_fail(self.start, slice.len()); . } . // SAFETY: `self` is checked to be valid and in bounds above. . unsafe { &*self.get_unchecked(slice) } . } . . #[inline] . fn index_mut(self, slice: &mut [T]) -> &mut [T] { 40,421 ( 0.00%) if self.start > slice.len() { . slice_start_index_len_fail(self.start, slice.len()); . } . // SAFETY: `self` is checked to be valid and in bounds above. . unsafe { &mut *self.get_unchecked_mut(slice) } . } . } . . #[stable(feature = "slice_get_slice_impls", since = "1.15.0")] -- line 345 ---------------------------------------- -- line 539 ---------------------------------------- . let end = match end { . ops::Bound::Included(end) => { . end.checked_add(1).unwrap_or_else(|| slice_end_index_overflow_fail()) . } . ops::Bound::Excluded(&end) => end, . ops::Bound::Unbounded => len, . }; . 182,174 ( 0.00%) if start > end { . slice_index_order_fail(start, end); . } 7,036 ( 0.00%) if end > len { . slice_end_index_len_fail(end, len); . } . . ops::Range { start, end } . } . . /// Convert pair of `ops::Bound`s into `ops::Range` without performing any bounds checking and (in debug) overflow checking . fn into_range_unchecked( -- line 558 ---------------------------------------- 24,017,436 ( 0.06%) -------------------------------------------------------------------------------- -- 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 . // . 23,956,958 ( 0.06%) if layout.align() <= MIN_ALIGN && layout.align() <= layout.size() { 17,967,717 ( 0.05%) 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. 1,342,072 ( 0.00%) if layout.align() <= MIN_ALIGN && layout.align() <= layout.size() { 2,013,108 ( 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) { 6,324,747 ( 0.02%) libc::free(ptr as *mut libc::c_void) . } . . #[inline] . unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 { 2,690,012 ( 0.01%) if layout.align() <= MIN_ALIGN && layout.align() <= new_size { 5,380,024 ( 0.01%) 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 ---------------------------------------- -- line 84 ---------------------------------------- . } else if #[cfg(target_os = "wasi")] { . #[inline] . unsafe fn aligned_malloc(layout: &Layout) -> *mut u8 { . libc::aligned_alloc(layout.align(), layout.size()) as *mut u8 . } . } else { . #[inline] . unsafe fn aligned_malloc(layout: &Layout) -> *mut u8 { 1 ( 0.00%) let mut out = ptr::null_mut(); . // posix_memalign requires that the alignment be a multiple of `sizeof(void*)`. . // Since these are all powers of 2, we can just use max. . let align = layout.align().max(crate::mem::size_of::()); 2 ( 0.00%) let ret = libc::posix_memalign(&mut out, align, layout.size()); 2 ( 0.00%) if ret != 0 { ptr::null_mut() } else { out as *mut u8 } . } . } . } 1 ( 0.00%) -------------------------------------------------------------------------------- -- 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")] 4,088 ( 0.00%) pub fn from_str_radix(src: &str, radix: u32) -> Result { 2,044 ( 0.00%) from_str_radix(src, radix) 6,132 ( 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 { 1,695,960 ( 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 { 2,636,873 ( 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 { 2,755,211 ( 0.01%) 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 { 79,405,152 ( 0.20%) 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 { 8 ( 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`. 16,170,286 ( 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`. 440,601 ( 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 596 ---------------------------------------- . without modifying the original"] . #[inline] . pub const fn checked_div(self, rhs: Self) -> Option { . if unlikely!(rhs == 0) { . None . } else { . // SAFETY: div by zero has been checked above and unsigned types have no other . // failure modes for division 18,944 ( 0.00%) Some(unsafe { intrinsics::unchecked_div(self, rhs) }) . } . } . . /// Checked Euclidean division. Computes `self.div_euclid(rhs)`, returning `None` . /// if `rhs == 0`. . /// . /// # Examples . /// -- line 612 ---------------------------------------- -- 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 { 1,973,661 ( 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!($SelfT), ".saturating_sub(127), 0);")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[rustc_const_stable(feature = "const_saturating_int_methods", since = "1.47.0")] . #[inline(always)] . pub const fn saturating_sub(self, rhs: Self) -> Self { 131,979 ( 0.00%) intrinsics::saturating_sub(self, rhs) . } . . /// Saturating integer multiplication. Computes `self * rhs`, . /// saturating at the numeric bounds instead of overflowing. . /// . /// # Examples . /// . /// Basic usage: -- line 1100 ---------------------------------------- -- line 1175 ---------------------------------------- . #[doc = concat!("assert_eq!(200", stringify!($SelfT), ".wrapping_add(", stringify!($SelfT), "::MAX), 199);")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn wrapping_add(self, rhs: Self) -> Self { 35,237,682 ( 0.09%) intrinsics::wrapping_add(self, rhs) . } . . /// Wrapping (modular) addition with a signed integer. Computes . /// `self + rhs`, wrapping around at the boundary of the type. . /// . /// # Examples . /// . /// Basic usage: -- line 1191 ---------------------------------------- -- line 1217 ---------------------------------------- . #[doc = concat!("assert_eq!(100", stringify!($SelfT), ".wrapping_sub(", stringify!($SelfT), "::MAX), 101);")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn wrapping_sub(self, rhs: Self) -> Self { 14,827,367 ( 0.04%) intrinsics::wrapping_sub(self, rhs) . } . . /// Wrapping (modular) multiplication. Computes `self * . /// rhs`, wrapping around at the boundary of the type. . /// . /// # Examples . /// . /// Basic usage: -- line 1233 ---------------------------------------- -- line 1240 ---------------------------------------- . /// assert_eq!(25u8.wrapping_mul(12), 44); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn wrapping_mul(self, rhs: Self) -> Self { 54,394,641 ( 0.14%) intrinsics::wrapping_mul(self, rhs) . } . . /// Wrapping (modular) division. Computes `self / rhs`. . /// Wrapped division on unsigned types is just normal division. . /// There's no way wrapping could ever happen. . /// This function exists, so that all operations . /// are accounted for in the wrapping operations. . /// -- line 1256 ---------------------------------------- -- line 1397 ---------------------------------------- . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn wrapping_shl(self, rhs: u32) -> Self { . // SAFETY: the masking by the bitsize of the type ensures that we do not shift . // out of bounds . unsafe { 155 ( 0.00%) intrinsics::unchecked_shl(self, (rhs & ($BITS - 1)) as $SelfT) . } . } . . /// Panic-free bitwise shift-right; yields `self >> mask(rhs)`, . /// where `mask` removes any high-order bits of `rhs` that . /// would cause the shift to exceed the bitwidth of the type. . /// . /// Note that this is *not* the same as a rotate-right; the -- line 1413 ---------------------------------------- -- line 1491 ---------------------------------------- . #[doc = concat!("assert_eq!(5", stringify!($SelfT), ".overflowing_add(2), (7, false));")] . #[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)] 617 ( 0.00%) pub const fn overflowing_add(self, rhs: Self) -> (Self, bool) { 6,246,918 ( 0.02%) let (a, b) = intrinsics::add_with_overflow(self as $ActualT, rhs as $ActualT); . (a as Self, b) 1,234 ( 0.00%) } . . /// Calculates `self + rhs + carry` without the ability to overflow. . /// . /// Performs "ternary addition" which takes in an extra bit to add, and may return an . /// additional bit of overflow. This allows for chaining together multiple additions . /// to create "big integers" which represent larger values. . /// . #[doc = concat!("This can be thought of as a ", stringify!($BITS), "-bit \"full adder\", in the electronics sense.")] -- line 1510 ---------------------------------------- -- line 1587 ---------------------------------------- . #[doc = concat!("assert_eq!(5", stringify!($SelfT), ".overflowing_sub(2), (3, false));")] . #[doc = concat!("assert_eq!(0", stringify!($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)] 21 ( 0.00%) pub const fn overflowing_sub(self, rhs: Self) -> (Self, bool) { 2,113,808 ( 0.01%) let (a, b) = intrinsics::sub_with_overflow(self as $ActualT, rhs as $ActualT); . (a as Self, b) 42 ( 0.00%) } . . /// 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. . /// . /// # Examples -- line 1606 ---------------------------------------- -- 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) { 11,818,338 ( 0.03%) let (a, b) = intrinsics::mul_with_overflow(self as $ActualT, rhs as $ActualT); . (a as Self, b) . } . . /// Calculates the divisor when `self` is divided by `rhs`. . /// . /// Returns a tuple of the divisor along with a boolean indicating . /// whether an arithmetic overflow would occur. Note that for unsigned . /// integers overflow never occurs, so the second value is always -- line 1690 ---------------------------------------- -- line 1838 ---------------------------------------- . #[doc = concat!("assert_eq!(0x1", stringify!($SelfT), ".overflowing_shl(132), (0x10, 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_shl(self, rhs: u32) -> (Self, bool) { 57 ( 0.00%) (self.wrapping_shl(rhs), (rhs > ($BITS - 1))) . } . . /// Shifts self right by `rhs` bits. . /// . /// Returns a tuple of the shifted version of self along with a boolean . /// indicating whether the shift value was larger than or equal to the . /// number of bits. If the shift value is too large, then value is . /// masked (N-1) where N is the number of bits, and this value is then -- line 1854 ---------------------------------------- -- line 2132 ---------------------------------------- . #[doc = concat!("assert!(16", stringify!($SelfT), ".is_power_of_two());")] . #[doc = concat!("assert!(!10", stringify!($SelfT), ".is_power_of_two());")] . /// ``` . #[must_use] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_is_power_of_two", since = "1.32.0")] . #[inline(always)] . pub const fn is_power_of_two(self) -> bool { 198 ( 0.00%) self.count_ones() == 1 . } . . // Returns one less than next power of two. . // (For 8u8 next power of two is 8u8 and for 6u8 it is 8u8) . // . // 8u8.one_less_than_next_power_of_two() == 7 . // 6u8.one_less_than_next_power_of_two() == 7 . // . // This method cannot overflow, as in the `next_power_of_two` . // overflow cases it instead ends up returning the maximum value . // of the type, and can return 0 for 0. . #[inline] . #[rustc_const_stable(feature = "const_int_pow", since = "1.50.0")] . const fn one_less_than_next_power_of_two(self) -> Self { 103,308 ( 0.00%) if self <= 1 { return 0; } . 144,746 ( 0.00%) let p = self - 1; . // SAFETY: Because `p > 0`, it cannot consist entirely of leading zeros. . // That means the shift is always in-bounds, and some processors . // (such as intel pre-haswell) have more efficient ctlz . // intrinsics when the argument is non-zero. 433,406 ( 0.00%) let z = unsafe { intrinsics::ctlz_nonzero(p) }; 145,154 ( 0.00%) <$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 { 185,974 ( 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 ---------------------------------------- 900,063 ( 0.00%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_trait_selection/src/traits/fulfill.rs -------------------------------------------------------------------------------- Ir -- line 33 ---------------------------------------- . . impl<'tcx> ForestObligation for PendingPredicateObligation<'tcx> { . /// Note that we include both the `ParamEnv` and the `Predicate`, . /// as the `ParamEnv` can influence whether fulfillment succeeds . /// or fails. . type CacheKey = ty::ParamEnvAnd<'tcx, ty::Predicate<'tcx>>; . . fn as_cache_key(&self) -> Self::CacheKey { 1,417,500 ( 0.00%) self.obligation.param_env.and(self.obligation.predicate) . } . } . . /// The fulfillment context is used to drive trait resolution. It . /// consists of a list of obligations that must be (eventually) . /// satisfied. The job is to track which are satisfied, which yielded . /// errors, and which are still pending. At any point, users can call . /// `select_where_possible`, and the fulfillment context will try to do -- line 49 ---------------------------------------- -- line 79 ---------------------------------------- . // outside of any snapshot, so any use of it inside a snapshot . // will lead to trouble and therefore is checked against, but . // other fulfillment contexts sometimes do live inside of . // a snapshot (they don't *straddle* a snapshot, so there . // is no trouble there). . usable_in_snapshot: bool, . } . 80 ( 0.00%) #[derive(Clone, Debug)] . pub struct PendingPredicateObligation<'tcx> { . pub obligation: PredicateObligation<'tcx>, . // This is far more often read than modified, meaning that we . // should mostly optimize for reading speed, while modifying is not as relevant. . // . // For whatever reason using a boxed slice is slower than using a `Vec` here. . pub stalled_on: Vec>, . } . . // `PendingPredicateObligation` is used a lot. Make sure it doesn't unintentionally get bigger. . #[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))] . static_assert_size!(PendingPredicateObligation<'_>, 72); . . impl<'a, 'tcx> FulfillmentContext<'tcx> { . /// Creates a new fulfillment context. 21,946 ( 0.00%) pub fn new() -> FulfillmentContext<'tcx> { 297,191 ( 0.00%) FulfillmentContext { 35,834 ( 0.00%) predicates: ObligationForest::new(), . relationships: FxHashMap::default(), . register_region_obligations: true, . usable_in_snapshot: false, . } 21,946 ( 0.00%) } . . pub fn new_in_snapshot() -> FulfillmentContext<'tcx> { 462 ( 0.00%) FulfillmentContext { 154 ( 0.00%) predicates: ObligationForest::new(), . relationships: FxHashMap::default(), . register_region_obligations: true, . usable_in_snapshot: true, . } . } . . pub fn new_ignoring_regions() -> FulfillmentContext<'tcx> { 61,024 ( 0.00%) FulfillmentContext { 15,256 ( 0.00%) predicates: ObligationForest::new(), . relationships: FxHashMap::default(), . register_region_obligations: false, . usable_in_snapshot: false, . } . } . . /// Attempts to select obligations using `selcx`. . fn select(&mut self, selcx: &mut SelectionContext<'a, 'tcx>) -> Vec> { 291,110 ( 0.00%) let span = debug_span!("select", obligation_forest_size = ?self.predicates.len()); . let _enter = span.enter(); . . let mut errors = Vec::new(); . . loop { . debug!("select: starting another iteration"); . . // Process pending obligations. . let outcome: Outcome<_, _> = 1,304,128 ( 0.00%) self.predicates.process_obligations(&mut FulfillProcessor { . selcx, 186,304 ( 0.00%) register_region_obligations: self.register_region_obligations, . }); . debug!("select: outcome={:#?}", outcome); . . // FIXME: if we kept the original cache key, we could mark projection . // obligations as complete for the projection cache here. . . errors.extend(outcome.errors.into_iter().map(to_fulfillment_error)); . . // If nothing new was added, no need to keep looping. 372,608 ( 0.00%) if outcome.stalled { . break; . } . } . . debug!( . "select({} predicates remaining, {} errors) done", . self.predicates.len(), . errors.len() -- line 162 ---------------------------------------- -- line 169 ---------------------------------------- . impl<'tcx> TraitEngine<'tcx> for FulfillmentContext<'tcx> { . /// "Normalize" a projection type `::X` by . /// creating a fresh type variable `$0` as well as a projection . /// predicate `::X == $0`. When the . /// inference engine runs, it will attempt to find an impl of . /// `SomeTrait` or a where-clause that lets us unify `$0` with . /// something concrete. If this fails, we'll unify `$0` with . /// `projection_ty` again. 3,388 ( 0.00%) #[tracing::instrument(level = "debug", skip(self, infcx, param_env, cause))] . fn normalize_projection_type( . &mut self, . infcx: &InferCtxt<'_, 'tcx>, . param_env: ty::ParamEnv<'tcx>, . projection_ty: ty::ProjectionTy<'tcx>, . cause: ObligationCause<'tcx>, . ) -> Ty<'tcx> { . debug_assert!(!projection_ty.has_escaping_bound_vars()); . . // FIXME(#20304) -- cache . . let mut selcx = SelectionContext::new(infcx); . let mut obligations = vec![]; 1,386 ( 0.00%) let normalized_ty = project::normalize_projection_type( . &mut selcx, . param_env, . projection_ty, 770 ( 0.00%) cause, . 0, . &mut obligations, . ); . self.register_predicate_obligations(infcx, obligations); . . debug!(?normalized_ty); . . normalized_ty . } . 815,790 ( 0.00%) fn register_predicate_obligation( . &mut self, . infcx: &InferCtxt<'_, 'tcx>, . obligation: PredicateObligation<'tcx>, . ) { . // this helps to reduce duplicate errors, as well as making . // debug output much nicer to read and so on. 407,895 ( 0.00%) let obligation = infcx.resolve_vars_if_possible(obligation); . . debug!(?obligation, "register_predicate_obligation"); . 815,790 ( 0.00%) assert!(!infcx.is_in_snapshot() || self.usable_in_snapshot); . 407,895 ( 0.00%) super::relationships::update(self, infcx, &obligation); . . self.predicates . .register_obligation(PendingPredicateObligation { obligation, stalled_on: vec![] }); 679,825 ( 0.00%) } . 591,848 ( 0.00%) fn select_all_or_error(&mut self, infcx: &InferCtxt<'_, 'tcx>) -> Vec> { . { 73,981 ( 0.00%) let errors = self.select_where_possible(infcx); 73,981 ( 0.00%) if !errors.is_empty() { 25 ( 0.00%) return errors; . } . } . 369,880 ( 0.00%) self.predicates.to_errors(CodeAmbiguity).into_iter().map(to_fulfillment_error).collect() 517,867 ( 0.00%) } . 1,455,550 ( 0.00%) fn select_where_possible( . &mut self, . infcx: &InferCtxt<'_, 'tcx>, . ) -> Vec> { . let mut selcx = SelectionContext::new(infcx); . self.select(&mut selcx) 1,309,995 ( 0.00%) } . 2,145 ( 0.00%) fn pending_obligations(&self) -> Vec> { . self.predicates.map_pending_obligations(|o| o.obligation.clone()) 2,860 ( 0.00%) } . . fn relationships(&mut self) -> &mut FxHashMap { 221 ( 0.00%) &mut self.relationships 221 ( 0.00%) } . } . . struct FulfillProcessor<'a, 'b, 'tcx> { . selcx: &'a mut SelectionContext<'b, 'tcx>, . register_region_obligations: bool, . } . . fn mk_pending(os: Vec>) -> Vec> { -- line 258 ---------------------------------------- -- line 275 ---------------------------------------- . #[inline(always)] . fn process_obligation( . &mut self, . pending_obligation: &mut Self::Obligation, . ) -> ProcessResult { . // If we were stalled on some unresolved variables, first check whether . // any of them have been resolved; if not, don't bother doing more work . // yet. 143,566,404 ( 0.37%) let change = match pending_obligation.stalled_on.len() { . // Match arms are in order of frequency, which matters because this . // code is so hot. 1 and 0 dominate; 2+ is fairly rare. . 1 => { 37,730,268 ( 0.10%) let infer_var = pending_obligation.stalled_on[0]; 12,576,756 ( 0.03%) self.selcx.infcx().ty_or_const_infer_var_changed(infer_var) . } . 0 => { . // In this case we haven't changed, but wish to make a change. . true . } . _ => { . // This `for` loop was once a call to `all()`, but this lower-level . // form was a perf win. See #64545 for details. 33,786,810 ( 0.09%) (|| { 67,567,056 ( 0.17%) for &infer_var in &pending_obligation.stalled_on { 23,005 ( 0.00%) if self.selcx.infcx().ty_or_const_infer_var_changed(infer_var) { . return true; . } . } . false . })() . } . }; . 8,148 ( 0.00%) if !change { . debug!( . "process_predicate: pending obligation {:?} still stalled on {:?}", . self.selcx.infcx().resolve_vars_if_possible(pending_obligation.obligation.clone()), . pending_obligation.stalled_on . ); . return ProcessResult::Unchanged; . } . 657,384 ( 0.00%) self.progress_changed_obligations(pending_obligation) . } . . fn process_backedge<'c, I>( . &mut self, . cycle: I, . _marker: PhantomData<&'c PendingPredicateObligation<'tcx>>, . ) where . I: Clone + Iterator>, -- line 325 ---------------------------------------- -- line 333 ---------------------------------------- . } . } . . impl<'a, 'b, 'tcx> FulfillProcessor<'a, 'b, 'tcx> { . // The code calling this method is extremely hot and only rarely . // actually uses this, so move this part of the code . // out of that loop. . #[inline(never)] 2,191,280 ( 0.01%) fn progress_changed_obligations( . &mut self, . pending_obligation: &mut PendingPredicateObligation<'tcx>, . ) -> ProcessResult, FulfillmentErrorCode<'tcx>> { . pending_obligation.stalled_on.truncate(0); . . let obligation = &mut pending_obligation.obligation; . 657,384 ( 0.00%) if obligation.predicate.has_infer_types_or_consts() { 104,024 ( 0.00%) obligation.predicate = 312,072 ( 0.00%) self.selcx.infcx().resolve_vars_if_possible(obligation.predicate); . } . . debug!(?obligation, ?obligation.cause, "process_obligation"); . . let infcx = self.selcx.infcx(); . 230,208 ( 0.00%) let binder = obligation.predicate.kind(); 1,533,896 ( 0.00%) match binder.no_bound_vars() { 1,298 ( 0.00%) None => match binder.skip_binder() { . // Evaluation will discard candidates using the leak check. . // This means we need to pass it the bound version of our . // predicate. . ty::PredicateKind::Trait(trait_ref) => { . let trait_obligation = obligation.with(binder.rebind(trait_ref)); . 236 ( 0.00%) self.process_trait_obligation( . obligation, 708 ( 0.00%) trait_obligation, . &mut pending_obligation.stalled_on, . ) . } . ty::PredicateKind::Projection(data) => { . let project_obligation = obligation.with(binder.rebind(data)); . 236 ( 0.00%) self.process_projection_obligation( . obligation, 708 ( 0.00%) project_obligation, . &mut pending_obligation.stalled_on, . ) . } . ty::PredicateKind::RegionOutlives(_) . | ty::PredicateKind::TypeOutlives(_) . | ty::PredicateKind::WellFormed(_) . | ty::PredicateKind::ObjectSafe(_) . | ty::PredicateKind::ClosureKind(..) -- line 386 ---------------------------------------- -- line 397 ---------------------------------------- . ty::PredicateKind::TypeWellFormedFromEnv(..) => { . bug!("TypeWellFormedFromEnv is only used for Chalk") . } . }, . Some(pred) => match pred { . ty::PredicateKind::Trait(data) => { . let trait_obligation = obligation.with(Binder::dummy(data)); . 539,590 ( 0.00%) self.process_trait_obligation( . obligation, 2,374,196 ( 0.01%) trait_obligation, . &mut pending_obligation.stalled_on, . ) . } . . ty::PredicateKind::RegionOutlives(data) => { 78,636 ( 0.00%) match infcx.region_outlives_predicate(&obligation.cause, Binder::dummy(data)) { 52,424 ( 0.00%) Ok(()) => ProcessResult::Changed(vec![]), . Err(_) => ProcessResult::Error(CodeSelectionError(Unimplemented)), . } . } . . ty::PredicateKind::TypeOutlives(ty::OutlivesPredicate(t_a, r_b)) => { 34,740 ( 0.00%) if self.register_region_obligations { 86,840 ( 0.00%) self.selcx.infcx().register_region_obligation_with_cause( . t_a, . r_b, . &obligation.cause, . ); . } . ProcessResult::Changed(vec![]) . } . . ty::PredicateKind::Projection(ref data) => { . let project_obligation = obligation.with(Binder::dummy(*data)); . 39,560 ( 0.00%) self.process_projection_obligation( . obligation, 118,680 ( 0.00%) project_obligation, . &mut pending_obligation.stalled_on, . ) . } . . ty::PredicateKind::ObjectSafe(trait_def_id) => { 920 ( 0.00%) if !self.selcx.tcx().is_object_safe(trait_def_id) { . ProcessResult::Error(CodeSelectionError(Unimplemented)) . } else { . ProcessResult::Changed(vec![]) . } . } . . ty::PredicateKind::ClosureKind(_, closure_substs, kind) => { 5,109 ( 0.00%) match self.selcx.infcx().closure_kind(closure_substs) { . Some(closure_kind) => { 10,218 ( 0.00%) if closure_kind.extends(kind) { . ProcessResult::Changed(vec![]) . } else { . ProcessResult::Error(CodeSelectionError(Unimplemented)) . } . } . None => ProcessResult::Unchanged, . } . } . . ty::PredicateKind::WellFormed(arg) => { 415,702 ( 0.00%) match wf::obligations( . self.selcx.infcx(), 118,772 ( 0.00%) obligation.param_env, 118,772 ( 0.00%) obligation.cause.body_id, 178,158 ( 0.00%) obligation.recursion_depth + 1, . arg, . obligation.cause.span, . ) { . None => { 53,284 ( 0.00%) pending_obligation.stalled_on = 93,247 ( 0.00%) vec![TyOrConstInferVar::maybe_from_generic_arg(arg).unwrap()]; 26,642 ( 0.00%) ProcessResult::Unchanged . } 138,195 ( 0.00%) Some(os) => ProcessResult::Changed(mk_pending(os)), . } . } . . ty::PredicateKind::Subtype(subtype) => { 85,880 ( 0.00%) match self.selcx.infcx().subtype_predicate( . &obligation.cause, . obligation.param_env, . Binder::dummy(subtype), . ) { . None => { . // None means that both are unresolved. 36,570 ( 0.00%) pending_obligation.stalled_on = vec![ 7,314 ( 0.00%) TyOrConstInferVar::maybe_from_ty(subtype.a).unwrap(), 14,628 ( 0.00%) TyOrConstInferVar::maybe_from_ty(subtype.b).unwrap(), . ]; . ProcessResult::Unchanged . } . Some(Ok(ok)) => ProcessResult::Changed(mk_pending(ok.obligations)), . Some(Err(err)) => { . let expected_found = . ExpectedFound::new(subtype.a_is_expected, subtype.a, subtype.b); . ProcessResult::Error(FulfillmentErrorCode::CodeSubtypeError( -- line 497 ---------------------------------------- -- line 498 ---------------------------------------- . expected_found, . err, . )) . } . } . } . . ty::PredicateKind::Coerce(coerce) => { 5,200 ( 0.00%) match self.selcx.infcx().coerce_predicate( . &obligation.cause, . obligation.param_env, . Binder::dummy(coerce), . ) { . None => { . // None means that both are unresolved. 1,575 ( 0.00%) pending_obligation.stalled_on = vec![ 315 ( 0.00%) TyOrConstInferVar::maybe_from_ty(coerce.a).unwrap(), 630 ( 0.00%) TyOrConstInferVar::maybe_from_ty(coerce.b).unwrap(), . ]; . ProcessResult::Unchanged . } . Some(Ok(ok)) => ProcessResult::Changed(mk_pending(ok.obligations)), . Some(Err(err)) => { . let expected_found = ExpectedFound::new(false, coerce.a, coerce.b); . ProcessResult::Error(FulfillmentErrorCode::CodeSubtypeError( . expected_found, -- line 523 ---------------------------------------- -- line 639 ---------------------------------------- . } . } . } . ty::PredicateKind::TypeWellFormedFromEnv(..) => { . bug!("TypeWellFormedFromEnv is only used for Chalk") . } . }, . } 1,972,152 ( 0.01%) } . 2,051,563 ( 0.01%) #[instrument(level = "debug", skip(self, obligation, stalled_on))] . fn process_trait_obligation( . &mut self, . obligation: &PredicateObligation<'tcx>, . trait_obligation: TraitObligation<'tcx>, . stalled_on: &mut Vec>, . ) -> ProcessResult, FulfillmentErrorCode<'tcx>> { 107,977 ( 0.00%) let infcx = self.selcx.infcx(); 323,931 ( 0.00%) if obligation.predicate.is_global() { . // no type variables present, can use evaluation for better caching. . // FIXME: consider caching errors too. 74,226 ( 0.00%) if infcx.predicate_must_hold_considering_regions(obligation) { . debug!( . "selecting trait at depth {} evaluated to holds", . obligation.recursion_depth . ); 66,690 ( 0.00%) return ProcessResult::Changed(vec![]); . } . } . 522,408 ( 0.00%) match self.selcx.select(&trait_obligation) { . Ok(Some(impl_source)) => { . debug!("selecting trait at depth {} yielded Ok(Some)", obligation.recursion_depth); 965,178 ( 0.00%) ProcessResult::Changed(mk_pending(impl_source.nested_obligations())) . } . Ok(None) => { . debug!("selecting trait at depth {} yielded Ok(None)", obligation.recursion_depth); . . // This is a bit subtle: for the most part, the . // only reason we can fail to make progress on . // trait selection is because we don't have enough . // information about the types in the trait. . stalled_on.clear(); . stalled_on.extend(substs_infer_vars( . self.selcx, 21,003 ( 0.00%) trait_obligation.predicate.map_bound(|pred| pred.trait_ref.substs), . )); . . debug!( . "process_predicate: pending obligation {:?} now stalled on {:?}", . infcx.resolve_vars_if_possible(obligation.clone()), . stalled_on . ); . 21,003 ( 0.00%) ProcessResult::Unchanged . } . Err(selection_err) => { . debug!("selecting trait at depth {} yielded Err", obligation.recursion_depth); . 112 ( 0.00%) ProcessResult::Error(CodeSelectionError(selection_err)) . } . } . } . 87,681 ( 0.00%) fn process_projection_obligation( . &mut self, . obligation: &PredicateObligation<'tcx>, . project_obligation: PolyProjectionObligation<'tcx>, . stalled_on: &mut Vec>, . ) -> ProcessResult, FulfillmentErrorCode<'tcx>> { 7,971 ( 0.00%) let tcx = self.selcx.tcx(); . 23,913 ( 0.00%) if obligation.predicate.is_global() { . // no type variables present, can use evaluation for better caching. . // FIXME: consider caching errors too. 384 ( 0.00%) if self.selcx.infcx().predicate_must_hold_considering_regions(obligation) { 834 ( 0.00%) if let Some(key) = ProjectionCacheKey::from_poly_projection_predicate( . &mut self.selcx, 973 ( 0.00%) project_obligation.predicate, . ) { . // If `predicate_must_hold_considering_regions` succeeds, then we've . // evaluated all sub-obligations. We can therefore mark the 'root' . // obligation as complete, and skip evaluating sub-obligations. 834 ( 0.00%) self.selcx . .infcx() . .inner . .borrow_mut() . .projection_cache() . .complete(key, EvaluationResult::EvaluatedToOk); . } 278 ( 0.00%) return ProcessResult::Changed(vec![]); . } else { . tracing::debug!("Does NOT hold: {:?}", obligation); . } . } . 54,824 ( 0.00%) match project::poly_project_and_unify_type(self.selcx, &project_obligation) { . Ok(Ok(Some(os))) => ProcessResult::Changed(mk_pending(os)), . Ok(Ok(None)) => { . stalled_on.clear(); . stalled_on.extend(substs_infer_vars( . self.selcx, 3,659 ( 0.00%) project_obligation.predicate.map_bound(|pred| pred.projection_ty.substs), . )); 3,659 ( 0.00%) ProcessResult::Unchanged . } . // Let the caller handle the recursion . Ok(Err(project::InProgress)) => ProcessResult::Changed(mk_pending(vec![ . project_obligation.with(project_obligation.predicate.to_predicate(tcx)), . ])), . Err(e) => ProcessResult::Error(CodeProjectionError(e)), . } 63,768 ( 0.00%) } . } . . /// Returns the set of inference variables contained in `substs`. . fn substs_infer_vars<'a, 'tcx>( . selcx: &mut SelectionContext<'a, 'tcx>, . substs: ty::Binder<'tcx, SubstsRef<'tcx>>, . ) -> impl Iterator> { . selcx . .infcx() . .resolve_vars_if_possible(substs) . .skip_binder() // ok because this check doesn't care about regions . .iter() . .filter(|arg| arg.has_infer_types_or_consts()) . .flat_map(|arg| { 133,495 ( 0.00%) let mut walker = arg.walk(); 240,466 ( 0.00%) while let Some(c) = walker.next() { 26,738 ( 0.00%) if !c.has_infer_types_or_consts() { . walker.visited.remove(&c); 10 ( 0.00%) walker.skip_current_subtree(); . } . } . walker.visited.into_iter() . }) . .filter_map(TyOrConstInferVar::maybe_from_generic_arg) . } . . fn to_fulfillment_error<'tcx>( . error: Error, FulfillmentErrorCode<'tcx>>, . ) -> FulfillmentError<'tcx> { . let mut iter = error.backtrace.into_iter(); 8 ( 0.00%) let obligation = iter.next().unwrap().obligation; . // The root obligation is the last item in the backtrace - if there's only . // one item, then it's the same as the main obligation . let root_obligation = iter.next_back().map_or_else(|| obligation.clone(), |e| e.obligation); 240 ( 0.00%) FulfillmentError::new(obligation, error.error, root_obligation) . } 97,769,645 ( 0.25%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_index/src/vec.rs -------------------------------------------------------------------------------- Ir -- line 13 ---------------------------------------- . /// . /// Purpose: avoid mixing indexes for different bitvector domains. . pub trait Idx: Copy + 'static + Eq + PartialEq + Debug + Hash { . fn new(idx: usize) -> Self; . . fn index(self) -> usize; . . fn increment_by(&mut self, amount: usize) { 192,996 ( 0.00%) *self = self.plus(amount); . } . . fn plus(self, amount: usize) -> Self { 284,530 ( 0.00%) Self::new(self.index() + amount) . } . } . . impl Idx for usize { . #[inline] . fn new(idx: usize) -> Self { . idx . } -- line 33 ---------------------------------------- -- line 35 ---------------------------------------- . fn index(self) -> usize { . self . } . } . . impl Idx for u32 { . #[inline] . fn new(idx: usize) -> Self { 18,557 ( 0.00%) assert!(idx <= u32::MAX as usize); . idx as u32 . } . #[inline] . fn index(self) -> usize { 520 ( 0.00%) self as usize . } . } . . /// Creates a struct type `S` that can be used as an index with . /// `IndexVec` and so on. . /// . /// There are two ways of interacting with these indices: . /// -- line 56 ---------------------------------------- -- line 71 ---------------------------------------- . . // Use default constants . ($(#[$attrs:meta])* $v:vis struct $name:ident { .. }) => ( . $crate::newtype_index!( . // Leave out derives marker so we can use its absence to ensure it comes first . @attrs [$(#[$attrs])*] . @type [$name] . // shave off 256 indices at the end to allow space for packing these indices into enums 474,995 ( 0.00%) @max [0xFFFF_FF00] . @vis [$v] . @debug_format ["{}"]); . ); . . // Define any constants . ($(#[$attrs:meta])* $v:vis struct $name:ident { $($tokens:tt)+ }) => ( . $crate::newtype_index!( . // Leave out derives marker so we can use its absence to ensure it comes first . @attrs [$(#[$attrs])*] . @type [$name] . // shave off 256 indices at the end to allow space for packing these indices into enums 2,220,789 ( 0.01%) @max [0xFFFF_FF00] . @vis [$v] . @debug_format ["{}"] . $($tokens)+); . ); . . // ---- private rules ---- . . // Base case, user-defined constants (if any) have already been defined -- line 99 ---------------------------------------- -- line 102 ---------------------------------------- . @type [$type:ident] . @max [$max:expr] . @vis [$v:vis] . @debug_format [$debug_format:tt]) => ( . $(#[$attrs])* . #[derive(Copy, PartialEq, Eq, Hash, PartialOrd, Ord, $($derives),*)] . #[rustc_layout_scalar_valid_range_end($max)] . $v struct $type { 104,791,847 ( 0.27%) private: u32 . } . . impl Clone for $type { . #[inline] . fn clone(&self) -> Self { . *self . } . } -- line 118 ---------------------------------------- -- line 126 ---------------------------------------- . . /// Creates a new index from a given `usize`. . /// . /// # Panics . /// . /// Will panic if `value` exceeds `MAX`. . #[inline] . $v const fn from_usize(value: usize) -> Self { 27,437,259 ( 0.07%) assert!(value <= ($max as usize)); . // SAFETY: We just checked that `value <= max`. . unsafe { 10,093 ( 0.00%) Self::from_u32_unchecked(value as u32) . } . } . . /// Creates a new index from a given `u32`. . /// . /// # Panics . /// . /// Will panic if `value` exceeds `MAX`. . #[inline] . $v const fn from_u32(value: u32) -> Self { 2,695,537 ( 0.01%) assert!(value <= $max); . // SAFETY: We just checked that `value <= max`. . unsafe { . Self::from_u32_unchecked(value) . } . } . . /// Creates a new index from a given `u32`. . /// -- line 156 ---------------------------------------- -- line 175 ---------------------------------------- . #[inline] . $v const fn as_u32(self) -> u32 { . self.private . } . . /// Extracts the value of this index as a `usize`. . #[inline] . $v const fn as_usize(self) -> usize { 17,803,935 ( 0.05%) self.as_u32() as usize . } . } . . impl std::ops::Add for $type { . type Output = Self; . 98 ( 0.00%) fn add(self, other: usize) -> Self { 28,654 ( 0.00%) Self::from_usize(self.index() + other) 196 ( 0.00%) } . } . . impl $crate::vec::Idx for $type { . #[inline] . fn new(value: usize) -> Self { . Self::from_usize(value) . } . -- line 200 ---------------------------------------- -- line 269 ---------------------------------------- . @debug_format [custom]) => (); . . // base case for handle_debug, no debug overrides found, so use default . (@handle_debug . @derives [] . @type [$type:ident] . @debug_format [$debug_format:tt]) => ( . impl ::std::fmt::Debug for $type { 98,220 ( 0.00%) fn fmt(&self, fmt: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result { 392,880 ( 0.00%) write!(fmt, $debug_format, self.as_u32()) 98,220 ( 0.00%) } . } . ); . . // Debug is requested for derive, don't generate any Debug implementation. . (@handle_debug . @derives [Debug, $($derives:ident,)*] . @type [$type:ident] . @debug_format [$debug_format:tt]) => (); -- line 287 ---------------------------------------- -- line 390 ---------------------------------------- . @vis [$v] . @debug_format [$debug_format] . $($tokens)*); . $crate::newtype_index!(@serializable $type); . ); . . (@serializable $type:ident) => ( . impl ::rustc_serialize::Decodable for $type { 962 ( 0.00%) fn decode(d: &mut D) -> Self { 197,311 ( 0.00%) Self::from_u32(d.read_u32()) 1,924 ( 0.00%) } . } . impl ::rustc_serialize::Encodable for $type { 3,580,720 ( 0.01%) fn encode(&self, e: &mut E) -> Result<(), E::Error> { . e.emit_u32(self.private) 4,296,864 ( 0.01%) } . } . ); . . // Rewrite final without comma to one that includes comma . (@derives [$($derives:ident,)*] . @attrs [$(#[$attrs:meta])*] . @type [$type:ident] . @max [$max:expr] -- line 413 ---------------------------------------- -- line 499 ---------------------------------------- . @type [$type] . @max [$max] . @vis [$v] . @debug_format [$debug_format] . $($tokens)*); . ); . } . 160,044 ( 0.00%) #[derive(Clone, PartialEq, Eq, Hash)] . pub struct IndexVec { 39,712 ( 0.00%) pub raw: Vec, 3 ( 0.00%) _marker: PhantomData, . } . . // Whether `IndexVec` is `Send` depends only on the data, . // not the phantom data. . unsafe impl Send for IndexVec where T: Send {} . . impl> Encodable for IndexVec { . fn encode(&self, s: &mut S) -> Result<(), S::Error> { -- line 518 ---------------------------------------- -- line 523 ---------------------------------------- . impl> Encodable for &IndexVec { . fn encode(&self, s: &mut S) -> Result<(), S::Error> { . Encodable::encode(&self.raw, s) . } . } . . impl> Decodable for IndexVec { . fn decode(d: &mut D) -> Self { 13,728 ( 0.00%) IndexVec { raw: Decodable::decode(d), _marker: PhantomData } . } . } . . impl fmt::Debug for IndexVec { . fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result { . fmt::Debug::fmt(&self.raw, fmt) . } . } . . impl IndexVec { . #[inline] . pub fn new() -> Self { 65,937 ( 0.00%) IndexVec { raw: Vec::new(), _marker: PhantomData } . } . . #[inline] . pub fn from_raw(raw: Vec) -> Self { 217,716 ( 0.00%) IndexVec { raw, _marker: PhantomData } . } . . #[inline] . pub fn with_capacity(capacity: usize) -> Self { 116,553 ( 0.00%) IndexVec { raw: Vec::with_capacity(capacity), _marker: PhantomData } . } . . #[inline] . pub fn from_elem(elem: T, universe: &IndexVec) -> Self . where . T: Clone, . { 478,309 ( 0.00%) IndexVec { raw: vec![elem; universe.len()], _marker: PhantomData } . } . . #[inline] . pub fn from_elem_n(elem: T, n: usize) -> Self . where . T: Clone, . { 984,853 ( 0.00%) IndexVec { raw: vec![elem; n], _marker: PhantomData } . } . . /// Create an `IndexVec` with `n` elements, where the value of each . /// element is the result of `func(i)`. (The underlying vector will . /// be allocated only once, with a capacity of at least `n`.) . #[inline] . pub fn from_fn_n(func: impl FnMut(I) -> T, n: usize) -> Self { . let indices = (0..n).map(I::new); . Self::from_raw(indices.map(func).collect()) . } . . #[inline] 1,903 ( 0.00%) pub fn push(&mut self, d: T) -> I { . let idx = I::new(self.len()); 4,576,402 ( 0.01%) self.raw.push(d); . idx 3,083 ( 0.00%) } . . #[inline] . pub fn pop(&mut self) -> Option { . self.raw.pop() . } . . #[inline] . pub fn len(&self) -> usize { 4,732,405 ( 0.01%) self.raw.len() . } . . /// Gives the next index that will be assigned when `push` is . /// called. . #[inline] . pub fn next_index(&self) -> I { . I::new(self.len()) . } -- line 604 ---------------------------------------- -- line 612 ---------------------------------------- . pub fn into_iter(self) -> vec::IntoIter { . self.raw.into_iter() . } . . #[inline] . pub fn into_iter_enumerated( . self, . ) -> impl DoubleEndedIterator + ExactSizeIterator { 4,857,866 ( 0.01%) self.raw.into_iter().enumerate().map(|(n, t)| (I::new(n), t)) . } . . #[inline] . pub fn iter(&self) -> slice::Iter<'_, T> { . self.raw.iter() . } . . #[inline] -- line 628 ---------------------------------------- -- line 692 ---------------------------------------- . . #[inline] . pub fn get_mut(&mut self, index: I) -> Option<&mut T> { . self.raw.get_mut(index.index()) . } . . /// Returns mutable references to two distinct elements, a and b. Panics if a == b. . #[inline] 197,635 ( 0.00%) pub fn pick2_mut(&mut self, a: I, b: I) -> (&mut T, &mut T) { . let (ai, bi) = (a.index(), b.index()); 395,270 ( 0.00%) assert!(ai != bi); . 197,635 ( 0.00%) if ai < bi { . let (c1, c2) = self.raw.split_at_mut(bi); 822,044 ( 0.00%) (&mut c1[ai], &mut c2[0]) . } else { 75 ( 0.00%) let (c2, c1) = self.pick2_mut(b, a); . (c1, c2) . } 592,905 ( 0.00%) } . . /// Returns mutable references to three distinct elements or panics otherwise. . #[inline] . pub fn pick3_mut(&mut self, a: I, b: I, c: I) -> (&mut T, &mut T, &mut T) { . let (ai, bi, ci) = (a.index(), b.index(), c.index()); . assert!(ai != bi && bi != ci && ci != ai); . let len = self.raw.len(); . assert!(ai < len && bi < len && ci < len); -- line 719 ---------------------------------------- -- line 726 ---------------------------------------- . } . . /// Grows the index vector so that it contains an entry for . /// `elem`; if that is already true, then has no . /// effect. Otherwise, inserts new values as needed by invoking . /// `fill_value`. . #[inline] . pub fn ensure_contains_elem(&mut self, elem: I, fill_value: impl FnMut() -> T) { 36,966 ( 0.00%) let min_new_len = elem.index() + 1; 1,705,569 ( 0.00%) if self.len() < min_new_len { 69,922 ( 0.00%) self.raw.resize_with(min_new_len, fill_value); . } . } . . #[inline] . pub fn resize_to_elem(&mut self, elem: I, fill_value: impl FnMut() -> T) { . let min_new_len = elem.index() + 1; . self.raw.resize_with(min_new_len, fill_value); . } -- line 744 ---------------------------------------- -- line 823 ---------------------------------------- . } . . impl FromIterator for IndexVec { . #[inline] . fn from_iter(iter: J) -> Self . where . J: IntoIterator, . { 590,279 ( 0.00%) IndexVec { raw: FromIterator::from_iter(iter), _marker: PhantomData } . } . } . . impl IntoIterator for IndexVec { . type Item = T; . type IntoIter = vec::IntoIter; . . #[inline] -- line 839 ---------------------------------------- 10,781,672 ( 0.03%) -------------------------------------------------------------------------------- -- 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> { 366,560 ( 0.00%) fn reverse(&mut self, undo: UndoLog<'tcx>) { 1,555,988 ( 0.00%) match undo { 276,812 ( 0.00%) UndoLog::EqRelation(undo) => self.eq_relations.reverse(undo), 181,932 ( 0.00%) UndoLog::SubRelation(undo) => self.sub_relations.reverse(undo), 274,376 ( 0.00%) UndoLog::Values(undo) => self.values.reverse(undo), . } 733,120 ( 0.00%) } . } . . 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, . } . 3,154,842 ( 0.01%) #[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> { 2,008,618 ( 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> { 212,142 ( 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 { 11,324 ( 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()); 37,492 ( 0.00%) self.eq_relations().union(a, b); 32,136 ( 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()); 85,083 ( 0.00%) self.sub_relations().union(a, b); . } . . /// Instantiates `vid` with the type `ty`. . /// . /// Precondition: `vid` must not have been previously instantiated. 656,540 ( 0.00%) 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) . ); 919,156 ( 0.00%) 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); 656,540 ( 0.00%) } . . /// 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. 859,656 ( 0.00%) pub fn new_var( . &mut self, . universe: ty::UniverseIndex, . origin: TypeVariableOrigin, . ) -> ty::TyVid { 1,289,484 ( 0.00%) let eq_key = self.eq_relations().new_key(TypeVariableValue::Unknown { universe }); . 716,380 ( 0.00%) let sub_key = self.sub_relations().new_key(()); 143,276 ( 0.00%) assert_eq!(eq_key.vid, sub_key); . 1,289,484 ( 0.00%) let index = self.values().push(TypeVariableData { origin }); 573,104 ( 0.00%) assert_eq!(eq_key.vid.as_u32(), index as u32); . . debug!("new_var(index={:?}, universe={:?}, origin={:?}", eq_key.vid, universe, origin,); . . eq_key.vid 1,002,932 ( 0.00%) } . . /// Returns the number of type variables created thus far. . pub fn num_vars(&self) -> usize { 9,859 ( 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 { 546,369 ( 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) 2,006 ( 0.00%) pub fn sub_root_var(&mut self, vid: ty::TyVid) -> ty::TyVid { 437,043 ( 0.00%) self.sub_relations().find(vid) 4,012 ( 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. 7,187,045 ( 0.02%) pub fn probe(&mut self, vid: ty::TyVid) -> TypeVariableValue<'tcx> { . self.inlined_probe(vid) 7,187,045 ( 0.02%) } . . /// An always-inlined variant of `probe`, for very hot call sites. . #[inline(always)] . pub fn inlined_probe(&mut self, vid: ty::TyVid) -> TypeVariableValue<'tcx> { 73,010,868 ( 0.19%) 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> { 1,673,146 ( 0.00%) match *t.kind() { 1,190,239 ( 0.00%) 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>> { 40,260,175 ( 0.10%) self.storage.eq_relations.with_log(self.undo_log) . } . . #[inline] . fn sub_relations(&mut self) -> super::UnificationTable<'_, 'tcx, ty::TyVid> { 338,683 ( 0.00%) self.storage.sub_relations.with_log(self.undo_log) . } . . /// Returns a range of the type variables created during the snapshot. 49,295 ( 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()); 59,154 ( 0.00%) ( . range.start..range.end, . (range.start.as_usize()..range.end.as_usize()) . .map(|index| self.storage.values.get(index).origin) . .collect(), . ) 59,154 ( 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); 340,652 ( 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: 152,253,412 ( 0.39%) 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 { 552,007 ( 0.00%) 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? . ( 5,355 ( 0.00%) &TypeVariableValue::Unknown { universe: universe1 }, 5,355 ( 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); 21,420 ( 0.00%) Ok(TypeVariableValue::Unknown { universe }) . } . } . } . } 415,210 ( 0.00%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_data_structures/src/obligation_forest/mod.rs -------------------------------------------------------------------------------- Ir -- line 121 ---------------------------------------- . #[derive(Debug)] . pub enum ProcessResult { . Unchanged, . Changed(Vec), . Error(E), . } . . #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)] 234,030 ( 0.00%) struct ObligationTreeId(usize); . . type ObligationTreeIdGenerator = . std::iter::Map, fn(usize) -> ObligationTreeId>; . . pub struct ObligationForest { . /// The list of obligations. In between calls to `process_obligations`, . /// this list only contains nodes in the `Pending` or `Waiting` state. . /// -- line 137 ---------------------------------------- -- line 181 ---------------------------------------- . has_parent: bool, . . /// Identifier of the obligation tree to which this node belongs. . obligation_tree_id: ObligationTreeId, . } . . impl Node { . fn new(parent: Option, obligation: O, obligation_tree_id: ObligationTreeId) -> Node { 2,838,656 ( 0.01%) Node { . obligation, . state: Cell::new(NodeState::Pending), 358,619 ( 0.00%) dependents: if let Some(parent_index) = parent { vec![parent_index] } else { vec![] }, . has_parent: parent.is_some(), . obligation_tree_id, . } . } . } . . /// The state of one node in some tree within the forest. This represents the . /// current state of processing for the obligation (of type `O`) associated -- line 200 ---------------------------------------- -- line 223 ---------------------------------------- . /// | compress() . /// v . /// (Removed) . /// ``` . /// The `Error` state can be introduced in several places, via `error_at()`. . /// . /// Outside of `ObligationForest` methods, nodes should be either `Pending` or . /// `Waiting`. 67,442,000 ( 0.17%) #[derive(Debug, Copy, Clone, PartialEq, Eq)] . enum NodeState { . /// This obligation has not yet been selected successfully. Cannot have . /// subobligations. . Pending, . . /// This obligation was selected successfully, but may or may not have . /// subobligations. . Success, -- line 239 ---------------------------------------- -- line 279 ---------------------------------------- . pub stalled: bool, . } . . impl OutcomeTrait for Outcome { . type Error = Error; . type Obligation = O; . . fn new() -> Self { 372,608 ( 0.00%) Self { stalled: true, errors: vec![] } . } . . fn mark_not_stalled(&mut self) { 173,516 ( 0.00%) self.stalled = false; . } . . fn is_stalled(&self) -> bool { 86,912 ( 0.00%) self.stalled . } . . fn record_completed(&mut self, _outcome: &Self::Obligation) { . // do nothing . } . . fn record_error(&mut self, error: Self::Error) { 128 ( 0.00%) self.errors.push(error) . } . } . . #[derive(Debug, PartialEq, Eq)] . pub struct Error { . pub error: E, . pub backtrace: Vec, . } . . impl ObligationForest { 51,082 ( 0.00%) pub fn new() -> ObligationForest { 612,984 ( 0.00%) ObligationForest { . nodes: vec![], . done_cache: Default::default(), . active_cache: Default::default(), . reused_node_vec: vec![], . obligation_tree_id_generator: (0..).map(ObligationTreeId), . error_cache: Default::default(), . } 51,082 ( 0.00%) } . . /// Returns the total number of nodes in the forest that have not . /// yet been fully resolved. . pub fn len(&self) -> usize { . self.nodes.len() . } . . /// Registers an obligation. . pub fn register_obligation(&mut self, obligation: O) { . // Ignore errors here - there is no guarantee of success. 1,767,545 ( 0.00%) let _ = self.register_obligation_at(obligation, None); . } . . // Returns Err(()) if we already know this obligation failed. 2,740,320 ( 0.01%) fn register_obligation_at(&mut self, obligation: O, parent: Option) -> Result<(), ()> { 498,240 ( 0.00%) let cache_key = obligation.as_cache_key(); 498,240 ( 0.00%) if self.done_cache.contains(&cache_key) { . debug!("register_obligation_at: ignoring already done obligation: {:?}", obligation); . return Ok(()); . } . 1,263,750 ( 0.00%) match self.active_cache.entry(cache_key) { . Entry::Occupied(o) => { 66,418 ( 0.00%) let node = &mut self.nodes[*o.get()]; 66,418 ( 0.00%) if let Some(parent_index) = parent { . // If the node is already in `active_cache`, it has already . // had its chance to be marked with a parent. So if it's . // not already present, just dump `parent` into the . // dependents as a non-parent. 71,988 ( 0.00%) if !node.dependents.contains(&parent_index) { . node.dependents.push(parent_index); . } . } 99,627 ( 0.00%) if let NodeState::Error = node.state.get() { Err(()) } else { Ok(()) } . } 532,248 ( 0.00%) Entry::Vacant(v) => { 1,064,496 ( 0.00%) let obligation_tree_id = match parent { 120,802 ( 0.00%) Some(parent_index) => self.nodes[parent_index].obligation_tree_id, . None => self.obligation_tree_id_generator.next().unwrap(), . }; . . let already_failed = parent.is_some() . && self . .error_cache . .get(&obligation_tree_id) . .map_or(false, |errors| errors.contains(v.key())); . . if already_failed { . Err(()) . } else { 177,416 ( 0.00%) let new_index = self.nodes.len(); . v.insert(new_index); . self.nodes.push(Node::new(parent, obligation, obligation_tree_id)); . Ok(()) . } . } . } 2,242,080 ( 0.01%) } . . /// Converts all remaining obligations to the given error. 517,832 ( 0.00%) pub fn to_errors(&mut self, error: E) -> Vec> { . let errors = self . .nodes . .iter() . .enumerate() . .filter(|(_index, node)| node.state.get() == NodeState::Pending) . .map(|(index, _node)| Error { error: error.clone(), backtrace: self.error_at(index) }) . .collect(); . 147,952 ( 0.00%) self.compress(|_| assert!(false)); . errors 443,856 ( 0.00%) } . . /// Returns the set of obligations that are in a pending state. . pub fn map_pending_obligations(&self, f: F) -> Vec

. where . F: Fn(&O) -> P, . { 154 ( 0.00%) self.nodes . .iter() . .filter(|node| node.state.get() == NodeState::Pending) . .map(|node| f(&node.obligation)) . .collect() . } . 56 ( 0.00%) fn insert_into_error_cache(&mut self, index: usize) { . let node = &self.nodes[index]; 8 ( 0.00%) self.error_cache 24 ( 0.00%) .entry(node.obligation_tree_id) . .or_default() . .insert(node.obligation.as_cache_key()); 64 ( 0.00%) } . . /// Performs a pass through the obligation list. This must . /// be called in a loop until `outcome.stalled` is false. . /// . /// This _cannot_ be unrolled (presently, at least). . #[inline(never)] 1,676,736 ( 0.00%) pub fn process_obligations(&mut self, processor: &mut P) -> OUT . where . P: ObligationProcessor, . OUT: OutcomeTrait>, . { . let mut outcome = OUT::new(); . . // Note that the loop body can append new nodes, and those new nodes . // will then be processed by subsequent iterations of the loop. . // . // We can't use an iterator for the loop because `self.nodes` is . // appended to and the borrow checker would complain. We also can't use . // `for index in 0..self.nodes.len() { ... }` because the range would . // be computed with the initial length, and we would miss the appended . // nodes. Therefore we use a `while` loop. . let mut index = 0; 32,825,733 ( 0.08%) while let Some(node) = self.nodes.get_mut(index) { . // `processor.process_obligation` can modify the predicate within . // `node.obligation`, and that predicate is the key used for . // `self.active_cache`. This means that `self.active_cache` can get . // out of sync with `nodes`. It's not very common, but it does . // happen, and code in `compress` has to allow for it. 65,278,858 ( 0.17%) if node.state.get() != NodeState::Pending { 8,622,987 ( 0.02%) index += 1; . continue; . } . 1,004,416 ( 0.00%) match processor.process_obligation(&mut node.obligation) { . ProcessResult::Unchanged => { . // No change in state. . } 694,032 ( 0.00%) ProcessResult::Changed(children) => { . // We are not (yet) stalled. . outcome.mark_not_stalled(); . node.state.set(NodeState::Success); . 920,342 ( 0.00%) for child in children { 1,923,635 ( 0.00%) let st = self.register_obligation_at(child, Some(index)); 226,310 ( 0.00%) if let Err(()) = st { . // Error already reported - propagate it . // to our node. . self.error_at(index); . } . } . } . ProcessResult::Error(err) => { . outcome.mark_not_stalled(); 264 ( 0.00%) outcome.record_error(Error { error: err, backtrace: self.error_at(index) }); . } . } 48,032,884 ( 0.12%) index += 1; . } . . // There's no need to perform marking, cycle processing and compression when nothing . // changed. 86,912 ( 0.00%) if !outcome.is_stalled() { . self.mark_successes(); . self.process_cycles(processor); 81,498 ( 0.00%) self.compress(|obl| outcome.record_completed(obl)); . } . . outcome 1,676,736 ( 0.00%) } . . /// Returns a vector of obligations for `p` and all of its . /// ancestors, putting them into the error state in the process. 56 ( 0.00%) fn error_at(&self, mut index: usize) -> Vec { . let mut error_stack: Vec = vec![]; . let mut trace = vec![]; . . loop { . let node = &self.nodes[index]; 8 ( 0.00%) node.state.set(NodeState::Error); . trace.push(node.obligation.clone()); 16 ( 0.00%) if node.has_parent { . // The first dependent is the parent, which is treated . // specially. . error_stack.extend(node.dependents.iter().skip(1)); . index = node.dependents[0]; . } else { . // No parent; treat all dependents non-specially. . error_stack.extend(node.dependents.iter()); . break; -- line 504 ---------------------------------------- -- line 509 ---------------------------------------- . let node = &self.nodes[index]; . if node.state.get() != NodeState::Error { . node.state.set(NodeState::Error); . error_stack.extend(node.dependents.iter()); . } . } . . trace 64 ( 0.00%) } . . /// Mark all `Waiting` nodes as `Success`, except those that depend on a . /// pending node. . fn mark_successes(&self) { . // Convert all `Waiting` nodes to `Success`. . for node in &self.nodes { 10,757,849 ( 0.03%) if node.state.get() == NodeState::Waiting { . node.state.set(NodeState::Success); . } . } . . // Convert `Success` nodes that depend on a pending node back to . // `Waiting`. . for node in &self.nodes { 9,828,766 ( 0.03%) if node.state.get() == NodeState::Pending { . // This call site is hot. . self.inlined_mark_dependents_as_waiting(node); . } . } . } . . // This always-inlined function is for the hot call site. . #[inline(always)] . fn inlined_mark_dependents_as_waiting(&self, node: &Node) { 5,057,615 ( 0.01%) for &index in node.dependents.iter() { . let node = &self.nodes[index]; 5,057,615 ( 0.01%) let state = node.state.get(); 5,057,615 ( 0.01%) if state == NodeState::Success { . // This call site is cold. 7,679,817 ( 0.02%) self.uninlined_mark_dependents_as_waiting(node); . } else { . debug_assert!(state == NodeState::Waiting || state == NodeState::Error) . } . } . } . . // This never-inlined function is for the cold call site. . #[inline(never)] 17,919,573 ( 0.05%) fn uninlined_mark_dependents_as_waiting(&self, node: &Node) { . // Mark node Waiting in the cold uninlined code instead of the hot inlined . node.state.set(NodeState::Waiting); . self.inlined_mark_dependents_as_waiting(node) 20,479,512 ( 0.05%) } . . /// Report cycles between all `Success` nodes, and convert all `Success` . /// nodes to `Done`. This must be called after `mark_successes`. . fn process_cycles

(&mut self, processor: &mut P) . where . P: ObligationProcessor, . { 40,749 ( 0.00%) let mut stack = std::mem::take(&mut self.reused_node_vec); . for (index, node) in self.nodes.iter().enumerate() { . // For some benchmarks this state test is extremely hot. It's a win . // to handle the no-op cases immediately to avoid the cost of the . // function call. 9,828,766 ( 0.03%) if node.state.get() == NodeState::Success { 833,780 ( 0.00%) self.find_cycles_from_node(&mut stack, processor, index); . } . } . . debug_assert!(stack.is_empty()); 325,992 ( 0.00%) self.reused_node_vec = stack; . } . 2,224,197 ( 0.01%) fn find_cycles_from_node

(&self, stack: &mut Vec, processor: &mut P, index: usize) . where . P: ObligationProcessor, . { . let node = &self.nodes[index]; 494,266 ( 0.00%) if node.state.get() == NodeState::Success { 13,622 ( 0.00%) match stack.iter().rposition(|&n| n == index) { . None => { . stack.push(index); 80,377 ( 0.00%) for &dep_index in node.dependents.iter() { 321,508 ( 0.00%) self.find_cycles_from_node(stack, processor, dep_index); . } . stack.pop(); . node.state.set(NodeState::Done); . } . Some(rpos) => { . // Cycle detected. . processor.process_backedge( . stack[rpos..].iter().map(|&i| &self.nodes[i].obligation), . PhantomData, . ); . } . } . } 1,977,064 ( 0.01%) } . . /// Compresses the vector, removing all popped nodes. This adjusts the . /// indices and hence invalidates any outstanding indices. `process_cycles` . /// must be run beforehand to remove any cycles on `Success` nodes. . #[inline(never)] 843,824 ( 0.00%) fn compress(&mut self, mut outcome_cb: impl FnMut(&O)) { 114,725 ( 0.00%) let orig_nodes_len = self.nodes.len(); . let mut node_rewrites: Vec<_> = std::mem::take(&mut self.reused_node_vec); . debug_assert!(node_rewrites.is_empty()); . node_rewrites.extend(0..orig_nodes_len); . let mut dead_nodes = 0; . . // Move removable nodes to the end, preserving the order of the . // remaining nodes. . // . // LOOP INVARIANT: . // self.nodes[0..index - dead_nodes] are the first remaining nodes . // self.nodes[index - dead_nodes..index] are all dead . // self.nodes[index..] are unchanged . for index in 0..orig_nodes_len { . let node = &self.nodes[index]; 49,306,826 ( 0.13%) match node.state.get() { . NodeState::Pending | NodeState::Waiting => { 19,310,500 ( 0.05%) if dead_nodes > 0 { 616,812 ( 0.00%) self.nodes.swap(index, index - dead_nodes); 1,028,020 ( 0.00%) node_rewrites[index] -= dead_nodes; . } . } . NodeState::Done => { . // This lookup can fail because the contents of . // `self.active_cache` are not guaranteed to match those of . // `self.nodes`. See the comment in `process_obligation` . // for more details. 644,176 ( 0.00%) if let Some((predicate, _)) = 520,524 ( 0.00%) self.active_cache.remove_entry(&node.obligation.as_cache_key()) . { . self.done_cache.insert(predicate); . } else { . self.done_cache.insert(node.obligation.as_cache_key().clone()); . } . // Extract the success stories. . outcome_cb(&node.obligation); 347,016 ( 0.00%) node_rewrites[index] = orig_nodes_len; 347,016 ( 0.00%) dead_nodes += 1; . } . NodeState::Error => { . // We *intentionally* remove the node from the cache at this point. Otherwise . // tests must come up with a different type on every type error they . // check against. 24 ( 0.00%) self.active_cache.remove(&node.obligation.as_cache_key()); 16 ( 0.00%) self.insert_into_error_cache(index); 16 ( 0.00%) node_rewrites[index] = orig_nodes_len; 16 ( 0.00%) dead_nodes += 1; . } . NodeState::Success => unreachable!(), . } . } . . if dead_nodes > 0 { . // Remove the dead nodes and rewrite indices. 74,964 ( 0.00%) self.nodes.truncate(orig_nodes_len - dead_nodes); 37,482 ( 0.00%) self.apply_rewrites(&node_rewrites); . } . . node_rewrites.truncate(0); 458,900 ( 0.00%) self.reused_node_vec = node_rewrites; 917,800 ( 0.00%) } . . #[inline(never)] 337,338 ( 0.00%) fn apply_rewrites(&mut self, node_rewrites: &[usize]) { . let orig_nodes_len = node_rewrites.len(); . . for node in &mut self.nodes { . let mut i = 0; 9,080,352 ( 0.02%) while let Some(dependent) = node.dependents.get_mut(i) { 12,333,752 ( 0.03%) let new_index = node_rewrites[*dependent]; 6,166,876 ( 0.02%) if new_index >= orig_nodes_len { . node.dependents.swap_remove(i); . if i == 0 && node.has_parent { . // We just removed the parent. . node.has_parent = false; . } . } else { 3,083,438 ( 0.01%) *dependent = new_index; 6,166,876 ( 0.02%) i += 1; . } . } . } . . // This updating of `self.active_cache` is necessary because the . // removal of nodes within `compress` can fail. See above. . self.active_cache.retain(|_predicate, index| { 24,187,080 ( 0.06%) let new_index = node_rewrites[*index]; 12,093,540 ( 0.03%) if new_index >= orig_nodes_len { . false . } else { 5,996,914 ( 0.02%) *index = new_index; . true . } . }); 299,856 ( 0.00%) } . } 70,385,567 ( 0.18%) -------------------------------------------------------------------------------- -- 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) { 4,595 ( 0.00%) let old = self.replace(val); 10,440 ( 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. 1,333,066 ( 0.00%) 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 { 3,136,838 ( 0.01%) 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 { 350,500 ( 0.00%) RefCell { 271,105 ( 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. 20,708 ( 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] 34,840 ( 0.00%) pub fn borrow(&self) -> Ref<'_, T> { . self.try_borrow().expect("already mutably borrowed") 104,520 ( 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] 168,851 ( 0.00%) pub fn borrow_mut(&self) -> RefMut<'_, T> { . self.try_borrow_mut().expect("already borrowed") 506,553 ( 0.00%) } . . /// 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 967 ---------------------------------------- . /// } . /// . /// assert!(c.try_borrow_mut().is_ok()); . /// ``` . #[stable(feature = "try_borrow", since = "1.13.0")] . #[inline] . #[cfg_attr(feature = "debug_refcell", track_caller)] . pub fn try_borrow_mut(&self) -> Result, BorrowMutError> { 6 ( 0.00%) 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. 10,223 ( 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> { 4,682,806 ( 0.01%) let b = borrow.get().wrapping_add(1); 2,800,857 ( 0.01%) 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) { 1,661,728 ( 0.00%) let borrow = self.borrow.get(); . debug_assert!(is_reading(borrow)); 3,474,629 ( 0.01%) 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) { 60,443,109 ( 0.15%) let borrow = self.borrow.get(); . debug_assert!(is_writing(borrow)); 120,523,080 ( 0.31%) 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. 124,714,018 ( 0.32%) 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 { 3,196 ( 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! 18,627,867 ( 0.05%) 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 ---------------------------------------- 72,325,687 ( 0.19%) -------------------------------------------------------------------------------- The following files chosen for auto-annotation could not be found: -------------------------------------------------------------------------------- ./malloc/malloc.c ./stdlib/msort.c ./string/../sysdeps/x86_64/multiarch/memcmp-avx2-movbe.S ./string/../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S ./string/../sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S ./string/../sysdeps/x86_64/multiarch/strcmp-avx2.S /tmp/gcc-build/x86_64-unknown-linux-gnu/libstdc++-v3/libsupc++/../../../../gcc-5.5.0/libstdc++-v3/libsupc++/new_op.cc -------------------------------------------------------------------------------- Ir -------------------------------------------------------------------------------- 7,269,528,738 (18.61%) events annotated