-------------------------------------------------------------------------------- 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 serde_with --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg feature="default" --cfg feature="macros" --cfg feature="serde_with_macros" -C metadata=6853a18a65179185 -C extra-filename=-6853a18a65179185 --out-dir /usr/home/liquid/tmp/.tmp4q6Fbk/target/debug/deps -L dependency=/usr/home/liquid/tmp/.tmp4q6Fbk/target/debug/deps --extern rustversion=/usr/home/liquid/tmp/.tmp4q6Fbk/target/debug/deps/librustversion-232f5bc9daf7279c.so --extern serde=/usr/home/liquid/tmp/.tmp4q6Fbk/target/debug/deps/libserde-1232cb2fcfabfafc.rmeta --extern serde_with_macros=/usr/home/liquid/tmp/.tmp4q6Fbk/target/debug/deps/libserde_with_macros-76d4c6e9d58d57a5.so -Adeprecated -Aunknown-lints -Zincremental-verify-ich Data file: results/cgout-w-profiling-serde_with-1.11.0-Check-Full Events recorded: Ir Events shown: Ir Event sort order: Ir Thresholds: 0.1 Include dirs: User annotated: Auto-annotation: on -------------------------------------------------------------------------------- Ir -------------------------------------------------------------------------------- 5,785,320,287 (100.0%) PROGRAM TOTALS -------------------------------------------------------------------------------- Ir file:function -------------------------------------------------------------------------------- 153,219,655 ( 2.65%) ./malloc/malloc.c:_int_free 104,693,040 ( 1.81%) ./malloc/malloc.c:_int_malloc 91,500,445 ( 1.58%) ./malloc/malloc.c:malloc 66,582,546 ( 1.15%) ./string/../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:__memcpy_avx_unaligned_erms 47,402,447 ( 0.82%) ./malloc/malloc.c:free 44,789,165 ( 0.77%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/mod.rs:, (), core::hash::BuildHasherDefault>>::from_hash::>::{closure#0}> 36,062,716 ( 0.62%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/mod.rs:, (), core::hash::BuildHasherDefault>>::from_hash::, rustc_middle::ty::context::Interned>::{closure#0}> 33,994,382 ( 0.59%) ./elf/dl-lookup.c:_dl_lookup_symbol_x 29,431,780 ( 0.51%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/undo_log.rs:::rollback_to 27,590,473 ( 0.48%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/map.rs:>, (), core::hash::BuildHasherDefault>>::from_hash::>>::{closure#0}> 27,245,239 ( 0.47%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/mod.rs:::reuse_or_mk_predicate 27,223,168 ( 0.47%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/num/uint_macros.rs:::short_write_process_buffer:: 27,196,659 ( 0.47%) ./elf/dl-lookup.c:do_lookup_x 26,204,687 ( 0.45%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/context.rs:::reuse_or_mk_predicate 25,225,225 ( 0.44%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/slice/iter/macros.rs:::_intern_substs 25,212,487 ( 0.44%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/context.rs:::_intern_substs 23,562,320 ( 0.41%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/fold.rs:::try_fold_with:: 23,533,241 ( 0.41%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/canonical/canonicalizer.rs:::fold_ty 22,773,419 ( 0.39%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/mod.rs:>, (), core::hash::BuildHasherDefault>>::from_hash::>>::{closure#0}> 21,102,990 ( 0.36%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs:::assemble_candidates 20,960,476 ( 0.36%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/fold.rs:::try_fold_with:: 20,097,512 ( 0.35%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/structural_impls.rs:rustc_middle::ty::util::fold_list:: as rustc_middle::ty::fold::TypeFoldable>::try_super_fold_with::{closure#0}> 19,881,768 ( 0.34%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/subst.rs:<&rustc_middle::ty::list::List as rustc_middle::ty::fold::TypeFoldable>::try_fold_with:: 19,759,830 ( 0.34%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/map.rs:, (), core::hash::BuildHasherDefault>>::from_hash::>::{closure#0}> 19,129,786 ( 0.33%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/context.rs:::intern_ty 18,806,604 ( 0.33%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/mod.rs:::commit_if_ok::, rustc_middle::ty::error::TypeError, ::higher_ranked_sub::{closure#0}> 18,675,520 ( 0.32%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/mod.rs:::shallow_resolve_ty 18,328,226 ( 0.32%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/fold.rs:<&rustc_middle::ty::list::List as rustc_middle::ty::fold::TypeFoldable>::try_fold_with:: 18,261,504 ( 0.32%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_data_structures/src/sip128.rs:::short_write_process_buffer:: 18,207,883 ( 0.31%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/sty.rs:::eq 17,737,128 ( 0.31%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/mod.rs:::try_fold_with:: 17,666,415 ( 0.31%) ./malloc/malloc.c:malloc_consolidate 17,553,780 ( 0.30%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/mod.rs:::start_snapshot 17,236,285 ( 0.30%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/subst.rs:<&rustc_middle::ty::list::List as rustc_middle::ty::fold::TypeFoldable>::try_fold_with:: 17,159,699 ( 0.30%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/sty.rs:::hash:: 16,181,363 ( 0.28%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/equate.rs:::tys 16,126,121 ( 0.28%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/context.rs:::intern_predicate 15,902,913 ( 0.27%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/mod.rs:::try_fold_with:: 15,889,320 ( 0.27%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/mod.rs:::rollback_to 15,714,673 ( 0.27%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/map.rs:, (), core::hash::BuildHasherDefault>>::from_hash::, rustc_middle::ty::context::Interned>::{closure#0}> 15,560,299 ( 0.27%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/relate.rs:rustc_middle::ty::relate::super_relate_tys:: 15,223,634 ( 0.26%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/fold.rs:<&rustc_middle::ty::list::List as rustc_middle::ty::fold::TypeFoldable>::try_fold_with:: 14,969,448 ( 0.26%) ./malloc/malloc.c:realloc 14,217,040 ( 0.25%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_span/src/caching_source_map_view.rs:::span_data_to_lines_and_cols 14,149,408 ( 0.24%) /usr/home/liquid/rust/worktree-benchmarking/library/std/src/sys/unix/alloc.rs:__rdl_alloc 14,119,365 ( 0.24%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/mod.rs:::hash:: 13,713,500 ( 0.24%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/at.rs:::match_where_clause_trait_ref 13,520,358 ( 0.23%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/mod.rs:::commit_if_ok::, rustc_middle::ty::error::TypeError, ::sub>::{closure#0}> 13,222,988 ( 0.23%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/map.rs:, (), core::hash::BuildHasherDefault>>::from_hash::>::{closure#0}> 13,096,539 ( 0.23%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/sty.rs:::eq 13,069,024 ( 0.23%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/higher_ranked/mod.rs:::replace_bound_vars_with_placeholders:: 12,750,338 ( 0.22%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/fold.rs:::replace_bound_vars::::replace_bound_vars_with_placeholders::{closure#0}, ::replace_bound_vars_with_placeholders::{closure#1}, ::replace_bound_vars_with_placeholders::{closure#2}> 12,509,188 ( 0.22%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/mod.rs:::to_opt_poly_trait_pred 12,433,192 ( 0.21%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_data_structures/src/obligation_forest/mod.rs:>::process_obligations::> 12,340,435 ( 0.21%) /usr/home/liquid/rust/worktree-benchmarking/library/alloc/src/collections/btree/map.rs: as core::ops::drop::Drop>::drop 11,973,252 ( 0.21%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/sty.rs:::hash:: 11,918,072 ( 0.21%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/relate.rs:::relate:: 11,614,291 ( 0.20%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/cell.rs:::start_snapshot 11,490,380 ( 0.20%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/fold.rs:::replace_bound_vars::::replace_bound_vars_with_fresh_vars::{closure#0}, ::replace_bound_vars_with_fresh_vars::{closure#1}, ::replace_bound_vars_with_fresh_vars::{closure#2}> 11,459,416 ( 0.20%) ./malloc/malloc.c:unlink_chunk.constprop.0 11,338,038 ( 0.20%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/type_variable.rs:::probe 11,033,787 ( 0.19%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_span/src/lib.rs:>::hash_stable 10,746,124 ( 0.19%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/smallvec-1.7.0/src/lib.rs:rustc_middle::ty::util::fold_list:: as rustc_middle::ty::fold::TypeFoldable>::try_super_fold_with::{closure#0}> 10,626,451 ( 0.18%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/sty.rs:, (), core::hash::BuildHasherDefault>>::from_hash::>::{closure#0}> 10,534,904 ( 0.18%) ./malloc/malloc.c:_int_realloc 10,293,518 ( 0.18%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/context.rs:::mk_region 10,293,465 ( 0.18%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/mod.rs:, (), core::hash::BuildHasherDefault>>::from_hash::>::{closure#0}> 10,211,560 ( 0.18%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/iter/adapters/zip.rs:>, (), core::hash::BuildHasherDefault>>::from_hash::>>::{closure#0}> 10,198,819 ( 0.18%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/relate.rs:::relate:: 10,172,249 ( 0.18%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/combine.rs:::super_combine_tys:: 10,097,723 ( 0.17%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/canonical/canonicalizer.rs:::canonical_var 9,624,730 ( 0.17%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/at.rs:::commit_if_ok::, rustc_middle::ty::error::TypeError, ::sub>::{closure#0}> 9,550,766 ( 0.17%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/subst.rs:::fold_ty 9,497,167 ( 0.16%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/iter/adapters/filter_map.rs:::assemble_candidates 9,489,621 ( 0.16%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/mod.rs:>>::from_key_hashed_nocheck:: 9,366,540 ( 0.16%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/structural_impls.rs:rustc_middle::ty::util::fold_list:: as rustc_middle::ty::fold::TypeFoldable>::try_super_fold_with::{closure#0}> 9,337,885 ( 0.16%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/context.rs: as rustc_middle::ty::context::InternIteratorElement>>::intern_with::>, core::iter::adapters::copied::Copied>>>, rustc_middle::ty::relate::relate_substs::{closure#0}>, ::mk_substs>, core::iter::adapters::copied::Copied>>>, rustc_middle::ty::relate::relate_substs::{closure#0}>>::{closure#0}> 9,278,080 ( 0.16%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/fold.rs: as rustc_middle::ty::fold::TypeFoldable>::super_fold_with:: 9,243,924 ( 0.16%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/at.rs: as rustc_infer::infer::at::ToTrace>::to_trace 8,850,182 ( 0.15%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/relate.rs:rustc_middle::ty::relate::super_relate_tys:: 8,835,954 ( 0.15%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/context.rs:::reuse_or_mk_predicate 8,803,244 ( 0.15%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/combine.rs:::tys 8,601,956 ( 0.15%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/canonical/canonicalizer.rs:rustc_middle::ty::util::fold_list:: as rustc_middle::ty::fold::TypeFoldable>::try_super_fold_with::{closure#0}> 8,534,320 ( 0.15%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/subst.rs:>::from 8,530,620 ( 0.15%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_type_ir/src/lib.rs:::shift_out 8,413,800 ( 0.15%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/mod.rs:::reuse_or_mk_predicate 8,382,575 ( 0.14%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_data_structures/src/sip128.rs:>::hash_stable 8,350,272 ( 0.14%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/structural_impls.rs: as rustc_middle::ty::fold::TypeFoldable>::super_fold_with:: 8,334,602 ( 0.14%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/num/uint_macros.rs:::_intern_substs 8,113,470 ( 0.14%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/canonical/canonicalizer.rs:::fold_region 7,996,284 ( 0.14%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/smallvec-1.7.0/src/lib.rs: as core::iter::traits::collect::Extend>::extend::>, <&rustc_middle::ty::list::List as rustc_middle::ty::fold::TypeFoldable>::try_super_fold_with::{closure#0}>, !>> 7,928,823 ( 0.14%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/bitmask.rs:>, (), core::hash::BuildHasherDefault>>::from_hash::>>::{closure#0}> 7,765,838 ( 0.13%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/fold.rs:::try_fold_with:: 7,765,141 ( 0.13%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_data_structures/src/obligation_forest/mod.rs:>::register_obligation_at 7,749,401 ( 0.13%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/mod.rs:, (), core::hash::BuildHasherDefault>>::from_hash::, rustc_middle::ty::context::Interned>::{closure#0}> 7,738,050 ( 0.13%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/fold.rs:rustc_middle::ty::util::fold_list:: as rustc_middle::ty::fold::TypeFoldable>::try_super_fold_with::{closure#0}> 7,679,560 ( 0.13%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/mod.rs:::probe::, ::evaluation_probe<::evaluate_where_clause::{closure#0}>::{closure#0}> 7,667,821 ( 0.13%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/resolve.rs:::fold_ty 7,434,924 ( 0.13%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/ops/bit.rs:::hash:: 7,311,960 ( 0.13%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_type_ir/src/lib.rs:::shift_in 7,267,148 ( 0.13%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/subst.rs:<&rustc_middle::ty::list::List as rustc_middle::ty::fold::TypeFoldable>::try_fold_with:: 7,183,612 ( 0.12%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/region_constraints/leak_check.rs:::leak_check 7,157,186 ( 0.12%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/freshen.rs:::fold_ty 7,111,278 ( 0.12%) /usr/home/liquid/rust/worktree-benchmarking/library/alloc/src/collections/btree/search.rs:>::search_tree:: 7,057,468 ( 0.12%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/sty.rs:::try_fold_with:: 7,037,789 ( 0.12%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/cell.rs:::rollback_to 7,012,632 ( 0.12%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/higher_ranked/mod.rs:::commit_if_ok::, rustc_middle::ty::error::TypeError, ::higher_ranked_sub::{closure#0}> 6,788,194 ( 0.12%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_privacy/src/lib.rs: as rustc_middle::ty::fold::TypeVisitor>::visit_ty 6,759,930 ( 0.12%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/fold.rs:::fold_ty 6,693,876 ( 0.12%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/context.rs:::relate:: 6,684,022 ( 0.12%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_ast/src/token.rs:::is_keyword 6,667,685 ( 0.12%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_trait_selection/src/traits/fulfill.rs:::progress_changed_obligations 6,647,104 ( 0.11%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/bitmask.rs:, (), core::hash::BuildHasherDefault>>::from_hash::>::{closure#0}> 6,638,112 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/sty.rs:::try_fold_with:: 6,634,865 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/cell.rs:::_intern_substs 6,634,865 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/library/std/src/collections/hash/map.rs:::_intern_substs 6,608,810 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/higher_ranked/mod.rs:::leak_check 6,583,081 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_parse/src/parser/mod.rs:::check 6,569,210 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/cell.rs:::intern_predicate 6,560,226 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_trait_selection/src/traits/fulfill.rs:>::process_obligations::> 6,532,260 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/subst.rs:<&rustc_middle::ty::list::List as rustc_middle::ty::fold::TypeFoldable>::try_fold_with:: 6,504,247 ( 0.11%) ./elf/../sysdeps/x86_64/dl-machine.h:_dl_relocate_object 6,502,180 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/ops/function.rs:<&mut rustc_middle::ty::relate::relate_substs::{closure#0} as core::ops::function::FnOnce<((usize, (rustc_middle::ty::subst::GenericArg, rustc_middle::ty::subst::GenericArg)),)>>::call_once 6,494,656 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/result.rs: as rustc_middle::ty::fold::TypeFoldable>::super_fold_with:: 6,483,850 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_trait_selection/src/traits/select/mod.rs:::probe::, ::evaluation_probe<::evaluate_where_clause::{closure#0}>::{closure#0}> 6,432,992 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/mod.rs:::combine_fields 6,432,138 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/num/uint_macros.rs:::hash:: 6,428,064 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/fold.rs:<&rustc_middle::ty::TyS as rustc_middle::ty::fold::TypeFoldable>::super_fold_with:: 6,311,263 ( 0.11%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/mod.rs:>>::from_key_hashed_nocheck:: 6,177,071 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/library/core/src/option.rs: as rustc_middle::ty::context::InternIteratorElement>>::intern_with::>, core::iter::adapters::copied::Copied>>>, rustc_middle::ty::relate::relate_substs::{closure#0}>, ::mk_substs>, core::iter::adapters::copied::Copied>>>, rustc_middle::ty::relate::relate_substs::{closure#0}>>::{closure#0}> 6,105,494 ( 0.11%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/context.rs:::reuse_or_mk_predicate 6,080,889 ( 0.11%) /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/smallvec-1.7.0/src/lib.rs:::canonical_var 6,072,385 ( 0.10%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/fold.rs:<&rustc_middle::ty::list::List as rustc_middle::ty::fold::TypeFoldable>::try_fold_with:: 6,033,940 ( 0.10%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_trait_selection/src/traits/select/mod.rs:::match_where_clause_trait_ref 5,986,389 ( 0.10%) /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/mod.rs:::remap_constness 5,977,642 ( 0.10%) 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-------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/region_constraints/leak_check.rs -------------------------------------------------------------------------------- Ir -- line 56 ---------------------------------------- . /// . /// # Historical note . /// . /// Older variants of the leak check used to report errors for these . /// patterns, but we no longer do: . /// . /// * R: P1, even if R cannot name P1, because R = 'static is a valid sol'n . /// * R: P1, R: P2, as above 2,298,704 ( 0.04%) pub fn leak_check( . &mut self, . tcx: TyCtxt<'tcx>, . overly_polymorphic: bool, . max_universe: ty::UniverseIndex, . snapshot: &CombinedSnapshot<'_, 'tcx>, . ) -> RelateResult<'tcx, ()> { . debug!( . "leak_check(max_universe={:?}, snapshot.universe={:?}, overly_polymorphic={:?})", . max_universe, snapshot.universe, overly_polymorphic . ); . 287,338 ( 0.00%) assert!(UndoLogs::>::in_snapshot(&self.undo_log)); . 287,338 ( 0.00%) let universe_at_start_of_snapshot = snapshot.universe; 287,338 ( 0.00%) if universe_at_start_of_snapshot == max_universe { 574,664 ( 0.01%) return Ok(()); . } . . let mini_graph = 18 ( 0.00%) &MiniGraph::new(tcx, self.undo_log.region_constraints(), &self.storage.data.verifys); . . let mut leak_check = LeakCheck::new( . tcx, . universe_at_start_of_snapshot, . max_universe, . overly_polymorphic, . mini_graph, . self, . ); 6 ( 0.00%) leak_check.assign_placeholder_values()?; 6 ( 0.00%) leak_check.propagate_scc_value()?; 6 ( 0.00%) Ok(()) 2,586,042 ( 0.04%) } . } . . struct LeakCheck<'me, 'tcx> { . tcx: TyCtxt<'tcx>, . universe_at_start_of_snapshot: ty::UniverseIndex, . overly_polymorphic: bool, . mini_graph: &'me MiniGraph<'tcx>, . rcc: &'me RegionConstraintCollector<'me, 'tcx>, -- line 105 ---------------------------------------- -- line 130 ---------------------------------------- . tcx: TyCtxt<'tcx>, . universe_at_start_of_snapshot: ty::UniverseIndex, . max_universe: ty::UniverseIndex, . overly_polymorphic: bool, . mini_graph: &'me MiniGraph<'tcx>, . rcc: &'me RegionConstraintCollector<'me, 'tcx>, . ) -> Self { . let dummy_scc_universe = SccUniverse { universe: max_universe, region: None }; 78 ( 0.00%) Self { . tcx, . universe_at_start_of_snapshot, . overly_polymorphic, . mini_graph, . rcc, . scc_placeholders: IndexVec::from_elem_n(None, mini_graph.sccs.num_sccs()), . scc_universes: IndexVec::from_elem_n(dummy_scc_universe, mini_graph.sccs.num_sccs()), . } . } . . /// Compute what placeholders (if any) each SCC must be equal to. . /// Also compute the minimum universe of all the regions in each SCC. 42 ( 0.00%) fn assign_placeholder_values(&mut self) -> RelateResult<'tcx, ()> { . // First walk: find each placeholder that is from a newly created universe. 6 ( 0.00%) for (region, leak_check_node) in &self.mini_graph.nodes { 10 ( 0.00%) let scc = self.mini_graph.sccs.scc(*leak_check_node); . . // Set the universe of each SCC to be the minimum of its constituent universes 20 ( 0.00%) let universe = self.rcc.universe(region); . debug!( . "assign_placeholder_values: scc={:?} universe={:?} region={:?}", . scc, universe, region . ); 10 ( 0.00%) self.scc_universes[scc].take_min(universe, region); . . // Detect those SCCs that directly contain a placeholder 25 ( 0.00%) if let ty::RePlaceholder(placeholder) = region { 50 ( 0.00%) if self.universe_at_start_of_snapshot.cannot_name(placeholder.universe) { 20 ( 0.00%) self.assign_scc_value(scc, *placeholder)?; . } . } . } . 6 ( 0.00%) Ok(()) 54 ( 0.00%) } . . // assign_scc_value(S, P): Update `scc_values` to account for the fact that `P: S` must hold. . // This may create an error. . fn assign_scc_value( . &mut self, . scc: LeakCheckScc, . placeholder: ty::PlaceholderRegion, . ) -> RelateResult<'tcx, ()> { 25 ( 0.00%) match self.scc_placeholders[scc] { . Some(p) => { . assert_ne!(p, placeholder); . return Err(self.placeholder_error(p, placeholder)); . } . None => { 25 ( 0.00%) self.scc_placeholders[scc] = Some(placeholder); . } . }; . . Ok(()) . } . . /// For each SCC S, iterate over each successor S1 where `S: S1`: . /// . /// * Compute . /// Iterate over each SCC `S` and ensure that, for each `S1` where `S1: S`, . /// `universe(S) <= universe(S1)`. This executes after . /// `assign_placeholder_values`, so `universe(S)` is already the minimum . /// universe of any of its direct constituents. 54 ( 0.00%) fn propagate_scc_value(&mut self) -> RelateResult<'tcx, ()> { . // Loop invariants: . // . // On start of the loop iteration for `scc1`: . // . // * `scc_universes[scc1]` contains the minimum universe of the . // constituents of `scc1` . // * `scc_placeholder[scc1]` stores the placeholder that `scc1` must . // be equal to (if any) . // . // For each succssor `scc2` where `scc1: scc2`: . // . // * `scc_placeholder[scc2]` stores some placeholder `P` where . // `scc2: P` (if any) . // * `scc_universes[scc2]` contains the minimum universe of the . // constituents of `scc2` and any of its successors 6 ( 0.00%) for scc1 in self.mini_graph.sccs.all_sccs() { . debug!( . "propagate_scc_value: scc={:?} with universe {:?}", . scc1, self.scc_universes[scc1] . ); . . // Walk over each `scc2` such that `scc1: scc2` and compute: . // . // * `scc1_universe`: the minimum universe of `scc2` and the constituents of `scc1` -- line 226 ---------------------------------------- -- line 235 ---------------------------------------- . scc1_universe.take_min(scc2_universe, scc2_region.unwrap()); . . if let Some(b) = self.scc_placeholders[scc2] { . succ_bound = Some(b); . } . } . . // Update minimum universe of scc1. 15 ( 0.00%) self.scc_universes[scc1] = scc1_universe; . . // At this point, `scc_placholder[scc1]` stores the placeholder that . // `scc1` must be equal to, if any. 35 ( 0.00%) if let Some(scc1_placeholder) = self.scc_placeholders[scc1] { . debug!( . "propagate_scc_value: scc1={:?} placeholder={:?} scc1_universe={:?}", . scc1, scc1_placeholder, scc1_universe . ); . . // Check if `P1: R` for some `R` in a universe that cannot name . // P1. That's an error. 30 ( 0.00%) if scc1_universe.universe.cannot_name(scc1_placeholder.universe) { . return Err(self.error(scc1_placeholder, scc1_universe.region.unwrap())); . } . . // Check if we have some placeholder where `S: P2` . // (transitively). In that case, since `S = P1`, that implies . // `P1: P2`, which is an error condition. 10 ( 0.00%) if let Some(scc2_placeholder) = succ_bound { . assert_ne!(scc1_placeholder, scc2_placeholder); . return Err(self.placeholder_error(scc1_placeholder, scc2_placeholder)); . } . } else { . // Otherwise, we can reach a placeholder if some successor can. . self.scc_placeholders[scc1] = succ_bound; . } . . // At this point, `scc_placeholder[scc1]` stores some placeholder that `scc1` must outlive (if any). . } 6 ( 0.00%) Ok(()) 54 ( 0.00%) } . . fn placeholder_error( . &self, . placeholder1: ty::PlaceholderRegion, . placeholder2: ty::PlaceholderRegion, . ) -> TypeError<'tcx> { . self.error(placeholder1, self.tcx.mk_region(ty::RePlaceholder(placeholder2))) . } -- line 282 ---------------------------------------- -- line 342 ---------------------------------------- . /// Some region that caused `universe` to be what it is. . region: Option>, . } . . impl<'tcx> SccUniverse<'tcx> { . /// If `universe` is less than our current universe, then update . /// `self.universe` and `self.region`. . fn take_min(&mut self, universe: ty::UniverseIndex, region: ty::Region<'tcx>) { 20 ( 0.00%) if universe < self.universe || self.region.is_none() { 5 ( 0.00%) self.universe = universe; 5 ( 0.00%) self.region = Some(region); . } . } . } . . rustc_index::newtype_index! { . struct LeakCheckNode { . DEBUG_FORMAT = "LeakCheckNode({})" . } -- line 360 ---------------------------------------- -- line 374 ---------------------------------------- . . /// Map from node index to SCC, and stores the successors of each SCC. All . /// the regions in the same SCC are equal to one another, and if `S1 -> S2`, . /// then `S1: S2`. . sccs: Sccs, . } . . impl<'tcx> MiniGraph<'tcx> { 78 ( 0.00%) fn new<'a>( . tcx: TyCtxt<'tcx>, . undo_log: impl Iterator>, . verifys: &[Verify<'tcx>], . ) -> Self . where . 'tcx: 'a, . { . let mut nodes = FxHashMap::default(); . let mut edges = Vec::new(); . . // Note that if `R2: R1`, we get a callback `r1, r2`, so `target` is first parameter. 100 ( 0.00%) Self::iterate_undo_log(tcx, undo_log, verifys, |target, source| { 10 ( 0.00%) let source_node = Self::add_node(&mut nodes, source); . let target_node = Self::add_node(&mut nodes, target); 10 ( 0.00%) edges.push((source_node, target_node)); 80 ( 0.00%) }); 42 ( 0.00%) let graph = VecGraph::new(nodes.len(), edges); 12 ( 0.00%) let sccs = Sccs::new(&graph); 84 ( 0.00%) Self { nodes, sccs } 54 ( 0.00%) } . . /// Invokes `each_edge(R1, R2)` for each edge where `R2: R1` . fn iterate_undo_log<'a>( . tcx: TyCtxt<'tcx>, . undo_log: impl Iterator>, . verifys: &[Verify<'tcx>], . mut each_edge: impl FnMut(ty::Region<'tcx>, ty::Region<'tcx>), . ) where . 'tcx: 'a, . { . for undo_entry in undo_log { 110 ( 0.00%) match undo_entry { . &AddConstraint(Constraint::VarSubVar(a, b)) => { . each_edge(tcx.mk_region(ReVar(a)), tcx.mk_region(ReVar(b))); . } 10 ( 0.00%) &AddConstraint(Constraint::RegSubVar(a, b)) => { 50 ( 0.00%) each_edge(a, tcx.mk_region(ReVar(b))); . } 10 ( 0.00%) &AddConstraint(Constraint::VarSubReg(a, b)) => { 50 ( 0.00%) each_edge(tcx.mk_region(ReVar(a)), b); . } . &AddConstraint(Constraint::RegSubReg(a, b)) => { . each_edge(a, b); . } . &AddGiven(a, b) => { . each_edge(a, tcx.mk_region(ReVar(b))); . } . &AddVerify(i) => span_bug!( -- line 430 ---------------------------------------- -- line 436 ---------------------------------------- . } . } . . fn add_node( . nodes: &mut FxHashMap, LeakCheckNode>, . r: ty::Region<'tcx>, . ) -> LeakCheckNode { . let l = nodes.len(); 20 ( 0.00%) *nodes.entry(r).or_insert(LeakCheckNode::new(l)) . } . } 862,257 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/ops/bit.rs -------------------------------------------------------------------------------- Ir -- line 267 ---------------------------------------- . macro_rules! bitor_impl { . ($($t:ty)*) => ($( . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_ops", issue = "90080")] . impl const BitOr for $t { . type Output = $t; . . #[inline] 16,160 ( 0.00%) fn bitor(self, rhs: $t) -> $t { self | rhs } . } . . forward_ref_binop! { impl const BitOr, bitor for $t, $t } . )*) . } . . bitor_impl! { bool usize u8 u16 u32 u64 u128 isize i8 i16 i32 i64 i128 } . -- line 283 ---------------------------------------- -- line 368 ---------------------------------------- . macro_rules! bitxor_impl { . ($($t:ty)*) => ($( . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_ops", issue = "90080")] . impl const BitXor for $t { . type Output = $t; . . #[inline] 14,330,468 ( 0.25%) fn bitxor(self, other: $t) -> $t { self ^ other } . } . . forward_ref_binop! { impl const BitXor, bitxor for $t, $t } . )*) . } . . bitxor_impl! { bool usize u8 u16 u32 u64 u128 isize i8 i16 i32 i64 i128 } . -- line 384 ---------------------------------------- -- line 468 ---------------------------------------- . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_ops", issue = "90080")] . impl const Shl<$f> for $t { . type Output = $t; . . #[inline] . #[rustc_inherit_overflow_checks] . fn shl(self, other: $f) -> $t { 6,030 ( 0.00%) self << other . } . } . . forward_ref_binop! { impl const Shl, shl for $t, $f } . }; . } . . macro_rules! shl_impl_all { -- line 484 ---------------------------------------- 5,072,109 ( 0.09%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/num/uint_macros.rs -------------------------------------------------------------------------------- Ir -- line 57 ---------------------------------------- . /// # Examples . /// . /// Basic usage: . /// . /// ``` . #[doc = concat!("assert_eq!(", stringify!($SelfT), "::from_str_radix(\"A\", 16), Ok(10));")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] 412 ( 0.00%) pub fn from_str_radix(src: &str, radix: u32) -> Result { 206 ( 0.00%) from_str_radix(src, radix) 618 ( 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 { 230,520 ( 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 { 1,097,368 ( 0.02%) 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 { 890,968 ( 0.02%) 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 { 37,005,028 ( 0.64%) intrinsics::rotate_left(self, n as $SelfT) . } . . /// Shifts the bits to the right by a specified amount, `n`, . /// wrapping the truncated bits to the beginning of the resulting . /// integer. . /// . /// Please note this isn't the same operation as the `>>` shifting operator! . /// -- line 220 ---------------------------------------- -- line 429 ---------------------------------------- . )] . #[doc = concat!("assert_eq!((", stringify!($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] 11,770 ( 0.00%) pub const fn checked_add(self, rhs: Self) -> Option { 11,963 ( 0.00%) let (a, b) = self.overflowing_add(rhs); 23,540 ( 0.00%) if unlikely!(b) {None} else {Some(a)} 9,416 ( 0.00%) } . . /// Unchecked integer addition. Computes `self + rhs`, assuming overflow . /// cannot occur. . /// . /// # Safety . /// . /// This results in undefined behavior when . #[doc = concat!("`self + rhs > ", stringify!($SelfT), "::MAX` or `self + rhs < ", stringify!($SelfT), "::MIN`,")] -- line 448 ---------------------------------------- -- 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`. 2,212,924 ( 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`. 236,132 ( 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 544 ---------------------------------------- . #[doc = concat!("assert_eq!(5", stringify!($SelfT), ".checked_mul(1), Some(5));")] . #[doc = concat!("assert_eq!(", stringify!($SelfT), "::MAX.checked_mul(2), 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] 20,532 ( 0.00%) pub const fn checked_mul(self, rhs: Self) -> Option { 13,688 ( 0.00%) let (a, b) = self.overflowing_mul(rhs); 34,220 ( 0.00%) if unlikely!(b) {None} else {Some(a)} 13,688 ( 0.00%) } . . /// Unchecked integer multiplication. Computes `self * rhs`, assuming overflow . /// cannot occur. . /// . /// # Safety . /// . /// This results in undefined behavior when . #[doc = concat!("`self * rhs > ", stringify!($SelfT), "::MAX` or `self * rhs < ", stringify!($SelfT), "::MIN`,")] -- line 563 ---------------------------------------- -- 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 { 394,571 ( 0.01%) intrinsics::saturating_add(self, rhs) 42 ( 0.00%) } . . /// Saturating addition with a signed integer. Computes `self + rhs`, . /// saturating at the numeric bounds instead of overflowing. . /// . /// # Examples . /// . /// Basic usage: . /// -- line 1052 ---------------------------------------- -- line 1084 ---------------------------------------- . #[doc = concat!("assert_eq!(13", stringify!($SelfT), ".saturating_sub(127), 0);")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[rustc_const_stable(feature = "const_saturating_int_methods", since = "1.47.0")] . #[inline(always)] . pub const fn saturating_sub(self, rhs: Self) -> Self { 17,294 ( 0.00%) intrinsics::saturating_sub(self, rhs) . } . . /// Saturating integer multiplication. Computes `self * rhs`, . /// saturating at the numeric bounds instead of overflowing. . /// . /// # Examples . /// . /// Basic usage: -- line 1100 ---------------------------------------- -- line 1104 ---------------------------------------- . #[doc = concat!("assert_eq!((", stringify!($SelfT), "::MAX).saturating_mul(10), ", stringify!($SelfT),"::MAX);")] . /// ``` . #[stable(feature = "wrapping", since = "1.7.0")] . #[rustc_const_stable(feature = "const_saturating_int_methods", since = "1.47.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline] . pub const fn saturating_mul(self, rhs: Self) -> Self { 2 ( 0.00%) match self.checked_mul(rhs) { . Some(x) => x, . None => Self::MAX, . } . } . . /// Saturating integer division. Computes `self / rhs`, saturating at the . /// numeric bounds instead of overflowing. . /// -- line 1120 ---------------------------------------- -- line 1175 ---------------------------------------- . #[doc = concat!("assert_eq!(200", stringify!($SelfT), ".wrapping_add(", stringify!($SelfT), "::MAX), 199);")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn wrapping_add(self, rhs: Self) -> Self { 15,558,816 ( 0.27%) intrinsics::wrapping_add(self, rhs) . } . . /// Wrapping (modular) addition with a signed integer. Computes . /// `self + rhs`, wrapping around at the boundary of the type. . /// . /// # Examples . /// . /// Basic usage: -- line 1191 ---------------------------------------- -- line 1217 ---------------------------------------- . #[doc = concat!("assert_eq!(100", stringify!($SelfT), ".wrapping_sub(", stringify!($SelfT), "::MAX), 101);")] . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn wrapping_sub(self, rhs: Self) -> Self { 4,421,191 ( 0.08%) intrinsics::wrapping_sub(self, rhs) . } . . /// Wrapping (modular) multiplication. Computes `self * . /// rhs`, wrapping around at the boundary of the type. . /// . /// # Examples . /// . /// Basic usage: -- line 1233 ---------------------------------------- -- line 1240 ---------------------------------------- . /// assert_eq!(25u8.wrapping_mul(12), 44); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn wrapping_mul(self, rhs: Self) -> Self { 23,320,274 ( 0.40%) intrinsics::wrapping_mul(self, rhs) . } . . /// Wrapping (modular) division. Computes `self / rhs`. . /// Wrapped division on unsigned types is just normal division. . /// There's no way wrapping could ever happen. . /// This function exists, so that all operations . /// are accounted for in the wrapping operations. . /// -- line 1256 ---------------------------------------- -- line 1397 ---------------------------------------- . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn wrapping_shl(self, rhs: u32) -> Self { . // SAFETY: the masking by the bitsize of the type ensures that we do not shift . // out of bounds . unsafe { 16 ( 0.00%) intrinsics::unchecked_shl(self, (rhs & ($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)] 1 ( 0.00%) pub const fn overflowing_add(self, rhs: Self) -> (Self, bool) { 2,554,316 ( 0.04%) let (a, b) = intrinsics::add_with_overflow(self as $ActualT, rhs as $ActualT); 4,708 ( 0.00%) (a as Self, b) 9,418 ( 0.00%) } . . /// Calculates `self + rhs + carry` without the ability to overflow. . /// . /// Performs "ternary addition" which takes in an extra bit to add, and may return an . /// additional bit of overflow. This allows for chaining together multiple additions . /// to create "big integers" which represent larger values. . /// . #[doc = concat!("This can be thought of as a ", stringify!($BITS), "-bit \"full adder\", in the electronics sense.")] -- line 1510 ---------------------------------------- -- line 1588 ---------------------------------------- . #[doc = concat!("assert_eq!(0", stringify!($SelfT), ".overflowing_sub(1), (", stringify!($SelfT), "::MAX, true));")] . /// ``` . #[stable(feature = "wrapping", since = "1.7.0")] . #[rustc_const_stable(feature = "const_wrapping_math", since = "1.32.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline(always)] . pub const fn overflowing_sub(self, rhs: Self) -> (Self, bool) { 493,436 ( 0.01%) let (a, b) = intrinsics::sub_with_overflow(self as $ActualT, rhs as $ActualT); . (a as Self, b) . } . . /// Calculates `self - rhs - borrow` without the ability to overflow. . /// . /// Performs "ternary subtraction" which takes in an extra bit to subtract, and may return . /// an additional bit of overflow. This allows for chaining together multiple subtractions . /// to create "big integers" which represent larger values. -- line 1604 ---------------------------------------- -- line 1673 ---------------------------------------- . /// assert_eq!(5u32.overflowing_mul(2), (10, false)); . /// 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)] 2 ( 0.00%) pub const fn overflowing_mul(self, rhs: Self) -> (Self, bool) { 4,616,131 ( 0.08%) let (a, b) = intrinsics::mul_with_overflow(self as $ActualT, rhs as $ActualT); 6,844 ( 0.00%) (a as Self, b) 13,689 ( 0.00%) } . . /// Calculates the divisor when `self` is divided by `rhs`. . /// . /// Returns a tuple of the divisor along with a boolean indicating . /// whether an arithmetic overflow would occur. Note that for unsigned . /// integers overflow never occurs, so the second value is always . /// `false`. . /// -- line 1692 ---------------------------------------- -- line 2132 ---------------------------------------- . #[doc = concat!("assert!(16", stringify!($SelfT), ".is_power_of_two());")] . #[doc = concat!("assert!(!10", stringify!($SelfT), ".is_power_of_two());")] . /// ``` . #[must_use] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_is_power_of_two", since = "1.32.0")] . #[inline(always)] . pub const fn is_power_of_two(self) -> bool { 198 ( 0.00%) self.count_ones() == 1 . } . . // Returns one less than next power of two. . // (For 8u8 next power of two is 8u8 and for 6u8 it is 8u8) . // . // 8u8.one_less_than_next_power_of_two() == 7 . // 6u8.one_less_than_next_power_of_two() == 7 . // . // This method cannot overflow, as in the `next_power_of_two` . // overflow cases it instead ends up returning the maximum value . // of the type, and can return 0 for 0. . #[inline] . #[rustc_const_stable(feature = "const_int_pow", since = "1.50.0")] . const fn one_less_than_next_power_of_two(self) -> Self { 55,938 ( 0.00%) if self <= 1 { return 0; } . 75,045 ( 0.00%) let p = self - 1; . // SAFETY: Because `p > 0`, it cannot consist entirely of leading zeros. . // That means the shift is always in-bounds, and some processors . // (such as intel pre-haswell) have more efficient ctlz . // intrinsics when the argument is non-zero. 214,119 ( 0.00%) let z = unsafe { intrinsics::ctlz_nonzero(p) }; 85,925 ( 0.00%) <$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 { 94,052 ( 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 ---------------------------------------- -- line 2264 ---------------------------------------- . #[doc = concat!("let bytes = ", $swap_op, stringify!($SelfT), ".to_le_bytes();")] . #[doc = concat!("assert_eq!(bytes, ", $le_bytes, ");")] . /// ``` . #[stable(feature = "int_to_from_bytes", since = "1.32.0")] . #[rustc_const_stable(feature = "const_int_conversion", since = "1.44.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . #[inline] 50 ( 0.00%) pub const fn to_le_bytes(self) -> [u8; mem::size_of::()] { 40 ( 0.00%) self.to_le().to_ne_bytes() 30 ( 0.00%) } . . /// Return the memory representation of this integer as a byte array in . /// native byte order. . /// . /// As the target platform's native endianness is used, portable code . /// should use [`to_be_bytes`] or [`to_le_bytes`], as appropriate, . /// instead. . /// -- line 2282 ---------------------------------------- -- line 2300 ---------------------------------------- . /// ``` . #[stable(feature = "int_to_from_bytes", since = "1.32.0")] . #[rustc_const_stable(feature = "const_int_conversion", since = "1.44.0")] . #[must_use = "this returns the result of the operation, \ . without modifying the original"] . // SAFETY: const sound because integers are plain old datatypes so we can always . // transmute them to arrays of bytes . #[inline] 20 ( 0.00%) pub const fn to_ne_bytes(self) -> [u8; mem::size_of::()] { . // SAFETY: integers are plain old datatypes so we can always transmute them to . // arrays of bytes 10 ( 0.00%) unsafe { mem::transmute(self) } 30 ( 0.00%) } . . /// Create a native endian integer value from its representation . /// as a byte array in big endian. . /// . #[doc = $from_xe_bytes_doc] . /// . /// # Examples . /// -- line 2320 ---------------------------------------- -- line 2360 ---------------------------------------- . /// *input = rest; . #[doc = concat!(" ", stringify!($SelfT), "::from_le_bytes(int_bytes.try_into().unwrap())")] . /// } . /// ``` . #[stable(feature = "int_to_from_bytes", since = "1.32.0")] . #[rustc_const_stable(feature = "const_int_conversion", since = "1.44.0")] . #[must_use] . #[inline] 56 ( 0.00%) pub const fn from_le_bytes(bytes: [u8; mem::size_of::()]) -> Self { 70 ( 0.00%) Self::from_le(Self::from_ne_bytes(bytes)) 28 ( 0.00%) } . . /// Create a native endian integer value from its memory representation . /// as a byte array in native endianness. . /// . /// As the target platform's native endianness is used, portable code . /// likely wants to use [`from_be_bytes`] or [`from_le_bytes`], as . /// appropriate instead. . /// -- line 2378 ---------------------------------------- -- line 2402 ---------------------------------------- . /// } . /// ``` . #[stable(feature = "int_to_from_bytes", since = "1.32.0")] . #[rustc_const_stable(feature = "const_int_conversion", since = "1.44.0")] . #[must_use] . // SAFETY: const sound because integers are plain old datatypes so we can always . // transmute to them . #[inline] 56 ( 0.00%) pub const fn from_ne_bytes(bytes: [u8; mem::size_of::()]) -> Self { . // SAFETY: integers are plain old datatypes so we can always transmute to them 84 ( 0.00%) unsafe { mem::transmute(bytes) } 28 ( 0.00%) } . . /// New code should prefer to use . #[doc = concat!("[`", stringify!($SelfT), "::MIN", "`] instead.")] . /// . /// Returns the smallest value that can be represented by this integer type. . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_promotable] . #[inline(always)] -- line 2421 ---------------------------------------- 327,444 ( 0.01%) -------------------------------------------------------------------------------- -- 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)] 123,636 ( 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 { 1,485,504 ( 0.03%) Node { . obligation, . state: Cell::new(NodeState::Pending), 185,922 ( 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`. 1,386,468 ( 0.02%) #[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 { 195,414 ( 0.00%) Self { stalled: true, errors: vec![] } . } . . fn mark_not_stalled(&mut self) { 91,461 ( 0.00%) self.stalled = false; . } . . fn is_stalled(&self) -> bool { 35,409 ( 0.00%) self.stalled . } . . fn record_completed(&mut self, _outcome: &Self::Obligation) { . // do nothing . } . . fn record_error(&mut self, error: Self::Error) { . self.errors.push(error) -- line 303 ---------------------------------------- -- line 306 ---------------------------------------- . . #[derive(Debug, PartialEq, Eq)] . pub struct Error { . pub error: E, . pub backtrace: Vec, . } . . impl ObligationForest { 28,401 ( 0.00%) pub fn new() -> ObligationForest { 340,812 ( 0.01%) 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(), . } 28,401 ( 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. 1,068,912 ( 0.02%) let _ = self.register_obligation_at(obligation, None); . } . . // Returns Err(()) if we already know this obligation failed. 1,781,208 ( 0.03%) fn register_obligation_at(&mut self, obligation: O, parent: Option) -> Result<(), ()> { 323,856 ( 0.01%) let cache_key = obligation.as_cache_key(); 323,856 ( 0.01%) if self.done_cache.contains(&cache_key) { . debug!("register_obligation_at: ignoring already done obligation: {:?}", obligation); . return Ok(()); . } . 774,444 ( 0.01%) match self.active_cache.entry(cache_key) { . Entry::Occupied(o) => { 72,460 ( 0.00%) let node = &mut self.nodes[*o.get()]; 72,460 ( 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. 59,823 ( 0.00%) if !node.dependents.contains(&parent_index) { . node.dependents.push(parent_index); . } . } 108,690 ( 0.00%) if let NodeState::Error = node.state.get() { Err(()) } else { Ok(()) } . } 278,532 ( 0.00%) Entry::Vacant(v) => { 557,064 ( 0.01%) let obligation_tree_id = match parent { 62,052 ( 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 { 92,844 ( 0.00%) let new_index = self.nodes.len(); . v.insert(new_index); . self.nodes.push(Node::new(parent, obligation, obligation_tree_id)); . Ok(()) . } . } . } 1,457,352 ( 0.03%) } . . /// Converts all remaining obligations to the given error. 299,082 ( 0.01%) 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(); . 85,452 ( 0.00%) self.compress(|_| assert!(false)); . errors 256,356 ( 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, . { 39 ( 0.00%) self.nodes . .iter() . .filter(|node| node.state.get() == NodeState::Pending) . .map(|node| f(&node.obligation)) . .collect() . } . . fn insert_into_error_cache(&mut self, index: usize) { . let node = &self.nodes[index]; -- line 410 ---------------------------------------- -- line 414 ---------------------------------------- . .insert(node.obligation.as_cache_key()); . } . . /// 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)] 879,363 ( 0.02%) 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; 621,645 ( 0.01%) 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. 1,047,876 ( 0.02%) if node.state.get() != NodeState::Pending { 38,756 ( 0.00%) index += 1; . continue; . } . 515,127 ( 0.01%) match processor.process_obligation(&mut node.obligation) { . ProcessResult::Unchanged => { . // No change in state. . } 365,844 ( 0.01%) ProcessResult::Changed(children) => { . // We are not (yet) stalled. . outcome.mark_not_stalled(); . node.state.set(NodeState::Success); . 525,252 ( 0.01%) for child in children { 1,354,968 ( 0.02%) let st = self.register_obligation_at(child, Some(index)); 159,408 ( 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(); . outcome.record_error(Error { error: err, backtrace: self.error_at(index) }); . } . } 970,364 ( 0.02%) index += 1; . } . . // There's no need to perform marking, cycle processing and compression when nothing . // changed. 35,409 ( 0.00%) if !outcome.is_stalled() { . self.mark_successes(); . self.process_cycles(processor); 37,348 ( 0.00%) self.compress(|obl| outcome.record_completed(obl)); . } . . outcome 879,363 ( 0.02%) } . . /// Returns a vector of obligations for `p` and all of its . /// ancestors, putting them into the error state in the process. . fn error_at(&self, mut index: usize) -> Vec { . let mut error_stack: Vec = vec![]; . let mut trace = vec![]; . . loop { -- line 492 ---------------------------------------- -- line 516 ---------------------------------------- . trace . } . . /// 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 { 463,613 ( 0.01%) 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 { 230,372 ( 0.00%) 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) { 29,199 ( 0.00%) for &index in node.dependents.iter() { . let node = &self.nodes[index]; 29,199 ( 0.00%) let state = node.state.get(); 29,199 ( 0.00%) if state == NodeState::Success { . // This call site is cold. 42,930 ( 0.00%) 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)] 100,170 ( 0.00%) 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) 114,480 ( 0.00%) } . . /// 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, . { 18,674 ( 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. 230,372 ( 0.00%) if node.state.get() == NodeState::Success { 436,765 ( 0.01%) self.find_cycles_from_node(&mut stack, processor, index); . } . } . . debug_assert!(stack.is_empty()); 149,392 ( 0.00%) self.reused_node_vec = stack; . } . 1,227,654 ( 0.02%) fn find_cycles_from_node

(&self, stack: &mut Vec, processor: &mut P, index: usize) . where . P: ObligationProcessor, . { . let node = &self.nodes[index]; 272,812 ( 0.00%) if node.state.get() == NodeState::Success { 8,254 ( 0.00%) match stack.iter().rposition(|&n| n == index) { . None => { . stack.push(index); 49,053 ( 0.00%) for &dep_index in node.dependents.iter() { 196,212 ( 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, . ); . } . } . } 1,091,248 ( 0.02%) } . . /// 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)] 448,474 ( 0.01%) fn compress(&mut self, mut outcome_cb: impl FnMut(&O)) { 61,400 ( 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]; 1,226,556 ( 0.02%) match node.state.get() { . NodeState::Pending | NodeState::Waiting => { 277,822 ( 0.00%) if dead_nodes > 0 { 132,585 ( 0.00%) self.nodes.swap(index, index - dead_nodes); 220,975 ( 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. 344,628 ( 0.01%) if let Some((predicate, _)) = 274,383 ( 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); 182,922 ( 0.00%) node_rewrites[index] = orig_nodes_len; 182,922 ( 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. . self.active_cache.remove(&node.obligation.as_cache_key()); . self.insert_into_error_cache(index); . node_rewrites[index] = orig_nodes_len; -- line 658 ---------------------------------------- -- line 659 ---------------------------------------- . dead_nodes += 1; . } . NodeState::Success => unreachable!(), . } . } . . if dead_nodes > 0 { . // Remove the dead nodes and rewrite indices. 36,104 ( 0.00%) self.nodes.truncate(orig_nodes_len - dead_nodes); 18,052 ( 0.00%) self.apply_rewrites(&node_rewrites); . } . . node_rewrites.truncate(0); 245,600 ( 0.00%) self.reused_node_vec = node_rewrites; 491,200 ( 0.01%) } . . #[inline(never)] 162,468 ( 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; 154,016 ( 0.00%) while let Some(dependent) = node.dependents.get_mut(i) { 104,956 ( 0.00%) let new_index = node_rewrites[*dependent]; 52,478 ( 0.00%) 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 { 26,239 ( 0.00%) *dependent = new_index; 52,478 ( 0.00%) 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| { 595,972 ( 0.01%) let new_index = node_rewrites[*index]; 297,986 ( 0.01%) if new_index >= orig_nodes_len { . false . } else { 127,777 ( 0.00%) *index = new_index; . true . } . }); 144,416 ( 0.00%) } . } 2,705,827 ( 0.05%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/sty.rs -------------------------------------------------------------------------------- Ir -- line 23 ---------------------------------------- . use std::cmp::Ordering; . use std::marker::PhantomData; . use std::ops::Range; . use ty::util::IntTypeExt; . . #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] . #[derive(HashStable, TypeFoldable, Lift)] . pub struct TypeAndMut<'tcx> { 178 ( 0.00%) pub ty: Ty<'tcx>, 890 ( 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 { 31,209 ( 0.00%) pub scope: DefId, 61,231 ( 0.00%) pub bound_region: BoundRegionKind, . } . 1,212,782 ( 0.02%) #[derive(Clone, PartialEq, PartialOrd, Eq, Ord, Hash, TyEncodable, TyDecodable, Copy)] . #[derive(HashStable)] . pub enum BoundRegionKind { . /// An anonymous region parameter for a given fn (&T) 5,400 ( 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. 1,081 ( 0.00%) BrNamed(DefId, Symbol), . . /// Anonymous region for the implicit env pointer parameter . /// to a closure . BrEnv, . } . 1,342 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, Hash, TyEncodable, TyDecodable, Debug, PartialOrd, Ord)] . #[derive(HashStable)] . pub struct BoundRegion { 369,667 ( 0.01%) pub var: BoundVar, 361,181 ( 0.01%) 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. 24,330,774 ( 0.42%) #[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable, Debug)] . #[derive(HashStable)] . #[rustc_diagnostic_item = "TyKind"] . pub enum TyKind<'tcx> { . /// The primitive boolean type. Written as `bool`. . Bool, . . /// The primitive character type; holds a Unicode scalar value . /// (a non-surrogate code point). Written as `char`. -- line 89 ---------------------------------------- -- line 99 ---------------------------------------- . Float(ty::FloatTy), . . /// Algebraic data types (ADT). For example: structures, enumerations and unions. . /// . /// InternalSubsts here, possibly against intuition, *may* contain `Param`s. . /// That is, even after substitution it is possible that there are type . /// variables. This happens when the `Adt` corresponds to an ADT . /// definition and not a concrete use of it. 3,507,131 ( 0.06%) 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]`. 23,202 ( 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`. 826,749 ( 0.01%) 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`. 45,075 ( 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. 10,403 ( 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. 95 ( 0.00%) pub fn new( . tcx: TyCtxt<'tcx>, . parts: ClosureSubstsParts<'tcx, Ty<'tcx>>, . ) -> ClosureSubsts<'tcx> { . ClosureSubsts { . substs: tcx.mk_substs( 190 ( 0.00%) parts.parent_substs.iter().copied().chain( 380 ( 0.00%) [parts.closure_kind_ty, parts.closure_sig_as_fn_ptr_ty, parts.tupled_upvars_ty] . .iter() . .map(|&ty| ty.into()), . ), . ), . } 190 ( 0.00%) } . . /// Divides the closure substs into their respective components. . /// The ordering assumed here must match that used by `ClosureSubsts::new` above. 1,382 ( 0.00%) fn split(self) -> ClosureSubstsParts<'tcx, GenericArg<'tcx>> { . match self.substs[..] { 18,152 ( 0.00%) [ 4,720 ( 0.00%) ref parent_substs @ .., 4,444 ( 0.00%) closure_kind_ty, 2,963 ( 0.00%) closure_sig_as_fn_ptr_ty, 3,051 ( 0.00%) tupled_upvars_ty, 5,528 ( 0.00%) ] => ClosureSubstsParts { . parent_substs, . closure_kind_ty, . closure_sig_as_fn_ptr_ty, . tupled_upvars_ty, . }, . _ => bug!("closure substs missing synthetics"), . } 4,146 ( 0.00%) } . . /// Returns `true` only if enough of the synthetic types are known to . /// allow using all of the methods on `ClosureSubsts` without panicking. . /// . /// Used primarily by `ty::print::pretty` to be able to handle closure . /// types that haven't had their synthetic types substituted in. . pub fn is_valid(self) -> bool { . self.substs.len() >= 3 -- line 378 ---------------------------------------- -- line 383 ---------------------------------------- . pub fn parent_substs(self) -> &'tcx [GenericArg<'tcx>] { . self.split().parent_substs . } . . /// Returns an iterator over the list of types of captured paths by the closure. . /// In case there was a type error in figuring out the types of the captured path, an . /// empty iterator is returned. . #[inline] 120 ( 0.00%) pub fn upvar_tys(self) -> impl Iterator> + 'tcx { 435 ( 0.00%) match self.tupled_upvars_ty().kind() { . TyKind::Error(_) => None, 290 ( 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() 80 ( 0.00%) } . . /// Returns the tuple type representing the upvars for this closure. . #[inline] . pub fn tupled_upvars_ty(self) -> Ty<'tcx> { 6,216 ( 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)`. 1,193 ( 0.00%) pub fn kind_ty(self) -> Ty<'tcx> { . self.split().closure_kind_ty.expect_ty() 2,386 ( 0.00%) } . . /// Returns the `fn` pointer type representing the closure signature for this . /// closure. . // FIXME(eddyb) this should be unnecessary, as the shallowly resolved . // type is known at the time of the creation of `ClosureSubsts`, . // see `rustc_typeck::check::closure`. . pub fn sig_as_fn_ptr_ty(self) -> Ty<'tcx> { . self.split().closure_sig_as_fn_ptr_ty.expect_ty() . } . . /// Returns the closure kind for this closure; only usable outside . /// of an inference context, because in that context we know that . /// there are no type variables. . /// . /// If you have an inference context, use `infcx.closure_kind()`. 10 ( 0.00%) pub fn kind(self) -> ty::ClosureKind { 10 ( 0.00%) self.kind_ty().to_opt_closure_kind().unwrap() 20 ( 0.00%) } . . /// Extracts the signature from the closure. 1,294 ( 0.00%) pub fn sig(self) -> ty::PolyFnSig<'tcx> { . let ty = self.sig_as_fn_ptr_ty(); 2,588 ( 0.00%) match ty.kind() { 5,176 ( 0.00%) ty::FnPtr(sig) => *sig, . _ => bug!("closure_sig_as_fn_ptr_ty is not a fn-ptr: {:?}", ty.kind()), . } 3,882 ( 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 { 210 ( 0.00%) let tupled_tys = match self { 305 ( 0.00%) UpvarSubsts::Closure(substs) => substs.as_closure().tupled_upvars_ty(), . UpvarSubsts::Generator(substs) => substs.as_generator().tupled_upvars_ty(), . }; . 505 ( 0.00%) match tupled_tys.kind() { . TyKind::Error(_) => None, 410 ( 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> { 400 ( 0.00%) match self { 420 ( 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() . } . } . 31,673 ( 0.00%) #[derive(Debug, Copy, Clone, PartialEq, PartialOrd, Ord, Eq, Hash, TyEncodable, TyDecodable)] 37,217 ( 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`. 18 ( 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. 70 ( 0.00%) pub fn stable_cmp(&self, tcx: TyCtxt<'tcx>, other: &Self) -> Ordering { . use self::ExistentialPredicate::*; 80 ( 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, . } 84 ( 0.00%) } . } . . impl<'tcx> Binder<'tcx, ExistentialPredicate<'tcx>> { 4,050 ( 0.00%) pub fn with_self_ty(&self, tcx: TyCtxt<'tcx>, self_ty: Ty<'tcx>) -> ty::Predicate<'tcx> { . use crate::ty::ToPredicate; 2,250 ( 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) . } . } 3,600 ( 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. 3 ( 0.00%) pub fn principal(&self) -> Option>> { 1,371 ( 0.00%) self[0] 1,362 ( 0.00%) .map_bound(|this| match this { . ExistentialPredicate::Trait(tr) => Some(tr), . _ => None, 12 ( 0.00%) }) . .transpose() 9 ( 0.00%) } . 451 ( 0.00%) pub fn principal_def_id(&self) -> Option { . self.principal().map(|trait_ref| trait_ref.skip_binder().def_id) 902 ( 0.00%) } . . #[inline] . pub fn projection_bounds<'a>( . &'a self, . ) -> impl Iterator>> + 'a { . self.iter().filter_map(|predicate| { . predicate 14 ( 0.00%) .map_bound(|pred| match pred { . ExistentialPredicate::Projection(projection) => Some(projection), . _ => None, . }) . .transpose() . }) . } . . #[inline] -- line 874 ---------------------------------------- -- 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. 30,949 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] 17,929,674 ( 0.31%) #[derive(HashStable, TypeFoldable)] . pub struct TraitRef<'tcx> { 8,903 ( 0.00%) pub def_id: DefId, 8,784,263 ( 0.15%) pub substs: SubstsRef<'tcx>, . } . . impl<'tcx> TraitRef<'tcx> { 6,948 ( 0.00%) pub fn new(def_id: DefId, substs: SubstsRef<'tcx>) -> TraitRef<'tcx> { . TraitRef { def_id, substs } 27,792 ( 0.00%) } . . /// Returns a `TraitRef` of the form `P0: Foo` where `Pi` . /// are the parameters defined on trait. 765 ( 0.00%) pub fn identity(tcx: TyCtxt<'tcx>, def_id: DefId) -> Binder<'tcx, TraitRef<'tcx>> { 340 ( 0.00%) ty::Binder::dummy(TraitRef { . def_id, 510 ( 0.00%) substs: InternalSubsts::identity_for_item(tcx, def_id), . }) 680 ( 0.00%) } . . #[inline] . pub fn self_ty(&self) -> Ty<'tcx> { . self.substs.type_at(0) . } . 4,144 ( 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); . 518 ( 0.00%) ty::TraitRef { def_id: trait_id, substs: tcx.intern_substs(&substs[..defs.params.len()]) } 5,698 ( 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 { 84,651 ( 0.00%) self.skip_binder().def_id 28,217 ( 0.00%) } . 13,109 ( 0.00%) pub fn to_poly_trait_predicate(&self) -> ty::PolyTraitPredicate<'tcx> { 26,218 ( 0.00%) self.map_bound(|trait_ref| ty::TraitPredicate { . trait_ref, . constness: ty::BoundConstness::NotConst, . polarity: ty::ImplPolarity::Positive, . }) 13,109 ( 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). 76 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] 17,760 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub struct ExistentialTraitRef<'tcx> { 2,128 ( 0.00%) pub def_id: DefId, 19,864 ( 0.00%) pub substs: SubstsRef<'tcx>, . } . . impl<'tcx> ExistentialTraitRef<'tcx> { 20 ( 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..]), . } 20 ( 0.00%) } . . /// Object types don't have a self type specified. Therefore, when . /// we convert the principal trait-ref into a normal trait-ref, . /// you must give *some* self type. A common choice is `mk_err()` . /// or some placeholder type. . pub fn with_self_ty(&self, tcx: TyCtxt<'tcx>, self_ty: Ty<'tcx>) -> ty::TraitRef<'tcx> { . // otherwise the escaping vars would be captured by the binder . // debug_assert!(!self_ty.has_escaping_bound_vars()); -- line 985 ---------------------------------------- -- line 999 ---------------------------------------- . /// we convert the principal trait-ref into a normal trait-ref, . /// you must give *some* self type. A common choice is `mk_err()` . /// or some placeholder type. . pub fn with_self_ty(&self, tcx: TyCtxt<'tcx>, self_ty: Ty<'tcx>) -> ty::PolyTraitRef<'tcx> { . self.map_bound(|trait_ref| trait_ref.with_self_ty(tcx, self_ty)) . } . } . 29,606 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] . #[derive(HashStable)] . pub enum BoundVariableKind { . Ty(BoundTyKind), . Region(BoundRegionKind), . Const, . } . . /// Binder is a binder for higher-ranked lifetimes or types. It is part of the -- line 1015 ---------------------------------------- -- line 1016 ---------------------------------------- . /// compiler's representation for things like `for<'a> Fn(&'a isize)` . /// (which would be represented by the type `PolyTraitRef == . /// Binder<'tcx, TraitRef>`). Note that when we instantiate, . /// erase, or otherwise "discharge" these bound vars, we change the . /// type from `Binder<'tcx, T>` to just `T` (see . /// e.g., `liberate_late_bound_regions`). . /// . /// `Decodable` and `Encodable` are implemented for `Binder` using the `impl_binder_encode_decode!` macro. 46,386 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)] 1,606,497 ( 0.03%) 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. 40,435 ( 0.00%) pub fn dummy(value: T) -> Binder<'tcx, T> { 250,055 ( 0.00%) assert!(!value.has_escaping_bound_vars()); 593,351 ( 0.01%) Binder(value, ty::List::empty()) 40,209 ( 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); . } 81,198 ( 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 { 6,921,664 ( 0.12%) self.0 . } . . pub fn bound_vars(&self) -> &'tcx List { 9,961 ( 0.00%) self.1 . } . . pub fn as_ref(&self) -> Binder<'tcx, &T> { 313,794 ( 0.01%) 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) . } . 787 ( 0.00%) pub fn map_bound>(self, f: F) -> Binder<'tcx, U> . where . F: FnOnce(T) -> U, . { 79,838 ( 0.00%) let value = f(self.0); . if cfg!(debug_assertions) { . let mut validator = ValidateBoundVars::new(self.1); . value.visit_with(&mut validator); . } 2,588,546 ( 0.04%) Binder(value, self.1) 787 ( 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); . } 53,423 ( 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); . } 98,329 ( 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>, . { 679,532 ( 0.01%) if self.0.has_escaping_bound_vars() { None } else { Some(self.skip_binder()) } 1,330 ( 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`. 6,688 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] 457,476 ( 0.01%) #[derive(HashStable, TypeFoldable)] . pub struct ProjectionTy<'tcx> { . /// The parameters of the associated item. 315,276 ( 0.01%) 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`. 426,286 ( 0.01%) pub item_def_id: DefId, . } . . impl<'tcx> ProjectionTy<'tcx> { 92,113 ( 0.00%) pub fn trait_def_id(&self, tcx: TyCtxt<'tcx>) -> DefId { 26,318 ( 0.00%) tcx.associated_item(self.item_def_id).container.id() 105,272 ( 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 111,272 ( 0.00%) pub fn trait_ref_and_own_substs( . &self, . tcx: TyCtxt<'tcx>, . ) -> (ty::TraitRef<'tcx>, &'tcx [ty::GenericArg<'tcx>]) { 47,688 ( 0.00%) let def_id = tcx.associated_item(self.item_def_id).container.id(); . let trait_generics = tcx.generics_of(def_id); 79,480 ( 0.00%) ( . ty::TraitRef { def_id, substs: self.substs.truncate_to(tcx, trait_generics) }, . &self.substs[trait_generics.count()..], . ) 143,064 ( 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. 117,576 ( 0.00%) pub fn trait_ref(&self, tcx: TyCtxt<'tcx>) -> ty::TraitRef<'tcx> { 13,064 ( 0.00%) let def_id = self.trait_def_id(tcx); 13,064 ( 0.00%) ty::TraitRef { def_id, substs: self.substs.truncate_to(tcx, tcx.generics_of(def_id)) } 143,704 ( 0.00%) } . 25,793 ( 0.00%) pub fn self_ty(&self) -> Ty<'tcx> { 77,379 ( 0.00%) self.substs.type_at(0) 51,586 ( 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. 67,581 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] 59,528 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub struct FnSig<'tcx> { 10,743 ( 0.00%) pub inputs_and_output: &'tcx List>, 95,377 ( 0.00%) pub c_variadic: bool, 18,576 ( 0.00%) pub unsafety: hir::Unsafety, 81,186 ( 0.00%) pub abi: abi::Abi, . } . . impl<'tcx> FnSig<'tcx> { 41,178 ( 0.00%) pub fn inputs(&self) -> &'tcx [Ty<'tcx>] { 172,722 ( 0.00%) &self.inputs_and_output[..self.inputs_and_output.len() - 1] 82,356 ( 0.00%) } . 26,759 ( 0.00%) pub fn output(&self) -> Ty<'tcx> { 193,958 ( 0.00%) self.inputs_and_output[self.inputs_and_output.len() - 1] 53,518 ( 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>]> { 6,906 ( 0.00%) self.map_bound_ref_unchecked(|fn_sig| fn_sig.inputs()) . } . #[inline] . pub fn input(&self, index: usize) -> ty::Binder<'tcx, Ty<'tcx>> { 12,125 ( 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) 887 ( 0.00%) } . #[inline] . pub fn output(&self) -> ty::Binder<'tcx, Ty<'tcx>> { 9,761 ( 0.00%) self.map_bound_ref(|fn_sig| fn_sig.output()) . } . pub fn c_variadic(&self) -> bool { 1,774 ( 0.00%) self.skip_binder().c_variadic 887 ( 0.00%) } . pub fn unsafety(&self) -> hir::Unsafety { 6,278 ( 0.00%) self.skip_binder().unsafety 3,139 ( 0.00%) } . pub fn abi(&self) -> abi::Abi { 5,444 ( 0.00%) self.skip_binder().abi 1,361 ( 0.00%) } . } . . pub type CanonicalPolyFnSig<'tcx> = Canonical<'tcx, Binder<'tcx, FnSig<'tcx>>>; . 1,392 ( 0.00%) #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] . #[derive(HashStable)] . pub struct ParamTy { 14,064 ( 0.00%) pub index: u32, . pub name: Symbol, . } . . impl<'tcx> ParamTy { 5,122 ( 0.00%) pub fn new(index: u32, name: Symbol) -> ParamTy { . ParamTy { index, name } 2,561 ( 0.00%) } . . pub fn for_def(def: &ty::GenericParamDef) -> ParamTy { 3,230 ( 0.00%) ParamTy::new(def.index, def.name) 1,615 ( 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)] . #[derive(HashStable)] . pub struct ParamConst { 8,667 ( 0.00%) pub index: u32, 8,026 ( 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 8,967,076 ( 0.15%) #[derive(Clone, PartialEq, Eq, Hash, Copy, TyEncodable, TyDecodable, PartialOrd, Ord)] 22 ( 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. 722,234 ( 0.01%) 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, . } . 36,128 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, Hash, TyEncodable, TyDecodable, Debug, PartialOrd, Ord)] . pub struct EarlyBoundRegion { 128,170 ( 0.00%) pub def_id: DefId, 96,240 ( 0.00%) pub index: u32, 307,980 ( 0.01%) pub name: Symbol, . } . . /// A **`const`** **v**ariable **ID**. . #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, TyDecodable)] . pub struct ConstVid<'tcx> { 4,688 ( 0.00%) pub index: u32, 2,462 ( 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, 10,403 ( 0.00%) pub kind: BoundTyKind, . } . 177,025 ( 0.00%) #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] . #[derive(HashStable)] . pub enum BoundTyKind { . Anon, . Param(Symbol), . } . . impl From for BoundTy { . fn from(var: BoundVar) -> Self { -- line 1532 ---------------------------------------- -- line 1616 ---------------------------------------- . RegionKind::RePlaceholder(placeholder) => placeholder.name.is_named(), . RegionKind::ReEmpty(_) => false, . RegionKind::ReErased => false, . } . } . . #[inline] . pub fn is_late_bound(&self) -> bool { 2,521 ( 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 { 496,535 ( 0.01%) match *self { . ty::ReLateBound(debruijn, _) => debruijn >= index, . _ => false, . } . } . . pub fn type_flags(&self) -> TypeFlags { . let mut flags = TypeFlags::empty(); . 431,406 ( 0.01%) 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 96,045 ( 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 { 2,732 ( 0.00%) match self.kind() { 396 ( 0.00%) Tuple(ref tys) => tys.is_empty(), . _ => false, . } . } . . #[inline] . pub fn is_never(&self) -> bool { 48,508 ( 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 { 103,118 ( 0.00%) matches!(self.kind(), Infer(TyVar(_))) . } . . #[inline] . pub fn ty_vid(&self) -> Option { 126,064 ( 0.00%) match self.kind() { 17,061 ( 0.00%) &Infer(TyVar(vid)) => Some(vid), . _ => None, . } . } . . #[inline] . pub fn is_ty_infer(&self) -> bool { 285 ( 0.00%) matches!(self.kind(), Infer(_)) . } . . #[inline] . pub fn is_phantom_data(&self) -> bool { 156 ( 0.00%) if let Adt(def, _) = self.kind() { def.is_phantom_data() } else { false } . } . . #[inline] . pub fn is_bool(&self) -> bool { 12 ( 0.00%) *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 { 3,442 ( 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 { 552 ( 0.00%) matches!(self.kind(), Array(..)) . } . . #[inline] . pub fn is_simd(&self) -> bool { . match self.kind() { . Adt(def, _) => def.repr.simd(), . _ => false, . } . } . 42 ( 0.00%) pub fn sequence_element_type(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> { 84 ( 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), . } 42 ( 0.00%) } . . pub fn simd_size_and_type(&self, tcx: TyCtxt<'tcx>) -> (u64, Ty<'tcx>) { . match self.kind() { . Adt(def, substs) => { . assert!(def.repr.simd(), "`simd_size_and_type` called on non-SIMD type"); . let variant = def.non_enum_variant(); . let f0_ty = variant.fields[0].ty(tcx, substs); . -- line 1824 ---------------------------------------- -- line 1838 ---------------------------------------- . } . } . _ => bug!("`simd_size_and_type` called on invalid type"), . } . } . . #[inline] . pub fn is_region_ptr(&self) -> bool { 20 ( 0.00%) matches!(self.kind(), Ref(..)) . } . . #[inline] . pub fn is_mutable_ptr(&self) -> bool { . matches!( . self.kind(), . RawPtr(TypeAndMut { mutbl: hir::Mutability::Mut, .. }) . | Ref(_, _, hir::Mutability::Mut) -- line 1854 ---------------------------------------- -- line 1861 ---------------------------------------- . match self.kind() { . Ref(_, _, mutability) => Some(*mutability), . _ => None, . } . } . . #[inline] . pub fn is_unsafe_ptr(&self) -> bool { 1,813 ( 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 { 6 ( 0.00%) self.is_region_ptr() || self.is_unsafe_ptr() || self.is_fn_ptr() . } . . #[inline] . pub fn is_box(&self) -> bool { 129,622 ( 0.00%) match self.kind() { 18,006 ( 0.00%) Adt(def, _) => def.is_box(), . _ => false, . } . } . . /// Panics if called on any type other than `Box`. 86 ( 0.00%) pub fn boxed_ty(&self) -> Ty<'tcx> { 86 ( 0.00%) match self.kind() { 215 ( 0.00%) Adt(def, substs) if def.is_box() => substs.type_at(0), . _ => bug!("`boxed_ty` is called on non-box type {:?}", self), . } 86 ( 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 { 127 ( 0.00%) matches!( 284 ( 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 { 26 ( 0.00%) matches!(self.kind(), Float(_) | Infer(FloatVar(_))) . } . . #[inline] . pub fn is_trait(&self) -> bool { . matches!(self.kind(), Dynamic(..)) . } . . #[inline] . pub fn is_enum(&self) -> bool { 6 ( 0.00%) matches!(self.kind(), Adt(adt_def, _) if adt_def.is_enum()) . } . . #[inline] . pub fn is_union(&self) -> bool { 9,148 ( 0.00%) matches!(self.kind(), Adt(adt_def, _) if adt_def.is_union()) . } . . #[inline] . pub fn is_closure(&self) -> bool { 2,472 ( 0.00%) matches!(self.kind(), Closure(..)) . } . . #[inline] . pub fn is_generator(&self) -> bool { 3,678 ( 0.00%) matches!(self.kind(), Generator(..)) . } . . #[inline] . pub fn is_integral(&self) -> bool { 4,016 ( 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 { 10,289 ( 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 { 9 ( 0.00%) matches!(self.kind(), Int(_)) . } . . #[inline] . pub fn is_ptr_sized_integral(&self) -> bool { 381 ( 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. 6,405 ( 0.00%) pub fn builtin_deref(&self, explicit: bool) -> Option> { 36,222 ( 0.00%) match self.kind() { 930 ( 0.00%) Adt(def, _) if def.is_box() => { 111 ( 0.00%) Some(TypeAndMut { ty: self.boxed_ty(), mutbl: hir::Mutability::Not }) . } 20,970 ( 0.00%) Ref(_, ty, mutbl) => Some(TypeAndMut { ty, mutbl: *mutbl }), . RawPtr(mt) if explicit => Some(*mt), . _ => None, . } 12,810 ( 0.00%) } . . /// Returns the type of `ty[i]`. . pub fn builtin_index(&self) -> Option> { 83 ( 0.00%) match self.kind() { . Array(ty, _) | Slice(ty) => Some(ty), . _ => None, . } 14 ( 0.00%) } . 68,704 ( 0.00%) pub fn fn_sig(&self, tcx: TyCtxt<'tcx>) -> PolyFnSig<'tcx> { 34,352 ( 0.00%) match self.kind() { 25,764 ( 0.00%) FnDef(def_id, substs) => tcx.fn_sig(*def_id).subst(tcx, substs), . 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), . } 77,292 ( 0.00%) } . . #[inline] . pub fn is_fn(&self) -> bool { 933 ( 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> { 4,621 ( 0.00%) match self.kind() { . Adt(adt, _) => Some(adt), . _ => None, . } . } . . /// Iterates over tuple fields. . /// Panics when called on anything but a tuple. 252 ( 0.00%) pub fn tuple_fields(&self) -> impl DoubleEndedIterator> { 1,468 ( 0.00%) match self.kind() { 898 ( 0.00%) Tuple(substs) => substs.iter().map(|field| field.expect_ty()), . _ => bug!("tuple_fields called on non-tuple"), . } 504 ( 0.00%) } . . /// Get the `i`-th element of a tuple. . /// Panics when called on anything but a tuple. 60 ( 0.00%) pub fn tuple_element_ty(&self, i: usize) -> Option> { 120 ( 0.00%) match self.kind() { 120 ( 0.00%) Tuple(substs) => substs.iter().nth(i).map(|field| field.expect_ty()), . _ => bug!("tuple_fields called on non-tuple"), . } 120 ( 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] 30 ( 0.00%) pub fn discriminant_for_variant( . &self, . tcx: TyCtxt<'tcx>, . variant_index: VariantIdx, . ) -> Option> { 15 ( 0.00%) match self.kind() { . TyKind::Adt(adt, _) if adt.variants.is_empty() => { . // This can actually happen during CTFE, see . // https://github.com/rust-lang/rust/issues/89765. . None . } . 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, . } 24 ( 0.00%) } . . /// Returns the type of the discriminant of this type. 12,810 ( 0.00%) pub fn discriminant_ty(&'tcx self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> { 6,405 ( 0.00%) match self.kind() { 10,248 ( 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) . } . } 10,248 ( 0.00%) } . . /// Returns the type of metadata for (potentially fat) pointers to this type. . pub fn ptr_metadata_ty( . &'tcx self, . tcx: TyCtxt<'tcx>, . normalize: impl FnMut(Ty<'tcx>) -> Ty<'tcx>, . ) -> Ty<'tcx> { . let tail = tcx.struct_tail_with_normalize(self, normalize); -- line 2151 ---------------------------------------- -- line 2200 ---------------------------------------- . /// function converts such a special type into the closure . /// kind. To go the other way, use . /// `tcx.closure_kind_ty(closure_kind)`. . /// . /// Note that during type checking, we use an inference variable . /// to represent the closure kind, because it has not yet been . /// inferred. Once upvar inference (in `rustc_typeck/src/check/upvar.rs`) . /// is complete, that type variable will be unified. 2,786 ( 0.00%) pub fn to_opt_closure_kind(&self) -> Option { 5,572 ( 0.00%) match self.kind() { 5,572 ( 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), . } 2,786 ( 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`. 197,262 ( 0.00%) pub fn is_trivially_sized(&self, tcx: TyCtxt<'tcx>) -> bool { 131,508 ( 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, . 2,099 ( 0.00%) ty::Tuple(tys) => tys.iter().all(|ty| ty.expect_ty().is_trivially_sized(tcx)), . 24,138 ( 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) . } . } 197,262 ( 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()` 2,100 ( 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. 78,912 ( 0.00%) pub fn xform(self, other: VarianceDiagInfo<'tcx>) -> VarianceDiagInfo<'tcx> { . // For now, just use the first `VarianceDiagInfo::Invariant` that we see 118,368 ( 0.00%) match self { . VarianceDiagInfo::None => other, . VarianceDiagInfo::Invariant { .. } => self, . } 39,456 ( 0.00%) } . } 37,490,389 ( 0.65%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/equate.rs -------------------------------------------------------------------------------- Ir -- line 24 ---------------------------------------- . } . . impl<'tcx> TypeRelation<'tcx> for Equate<'_, '_, 'tcx> { . fn tag(&self) -> &'static str { . "Equate" . } . . fn tcx(&self) -> TyCtxt<'tcx> { 48,963 ( 0.00%) self.fields.tcx() 24,140 ( 0.00%) } . . fn param_env(&self) -> ty::ParamEnv<'tcx> { 750 ( 0.00%) self.fields.param_env . } . . fn a_is_expected(&self) -> bool { 551,297 ( 0.01%) self.a_is_expected . } . 116,600 ( 0.00%) fn relate_item_substs( . &mut self, . _item_def_id: DefId, . a_subst: SubstsRef<'tcx>, . b_subst: SubstsRef<'tcx>, . ) -> RelateResult<'tcx, SubstsRef<'tcx>> { . // N.B., once we are equating types, we don't care about . // variance, so don't try to lookup the variance here. This . // also avoids some cycles (e.g., #41849) since looking up . // variance requires computing types which can require . // performing trait matching (which then performs equality . // unification). . 23,320 ( 0.00%) relate::relate_substs(self, None, a_subst, b_subst) 139,920 ( 0.00%) } . . fn relate_with_variance>( . &mut self, . _: ty::Variance, . _info: ty::VarianceDiagInfo<'tcx>, . a: T, . b: T, . ) -> RelateResult<'tcx, T> { . self.relate(a, b) . } . 4,259,052 ( 0.07%) fn tys(&mut self, a: Ty<'tcx>, b: Ty<'tcx>) -> RelateResult<'tcx, Ty<'tcx>> { . debug!("{}.tys({:?}, {:?})", self.tag(), a, b); 473,228 ( 0.01%) if a == b { . return Ok(a); . } . 681,558 ( 0.01%) let infcx = self.fields.infcx; 681,558 ( 0.01%) let a = infcx.inner.borrow_mut().type_variables().replace_if_possible(a); 681,558 ( 0.01%) let b = infcx.inner.borrow_mut().type_variables().replace_if_possible(b); . . debug!("{}.tys: replacements ({:?}, {:?})", self.tag(), a, b); . 1,813,458 ( 0.03%) match (a.kind(), b.kind()) { . (&ty::Infer(TyVar(a_id)), &ty::Infer(TyVar(b_id))) => { . infcx.inner.borrow_mut().type_variables().equate(a_id, b_id); . } . 1,565 ( 0.00%) (&ty::Infer(TyVar(a_id)), _) => { 6,260 ( 0.00%) self.fields.instantiate(b, RelationDir::EqTo, a_id, self.a_is_expected)?; . } . 46,584 ( 0.00%) (_, &ty::Infer(TyVar(b_id))) => { 232,920 ( 0.00%) self.fields.instantiate(a, RelationDir::EqTo, b_id, self.a_is_expected)?; . } . . _ => { 2,033,948 ( 0.04%) self.fields.infcx.super_combine_tys(self, a, b)?; . } . } . . Ok(a) 4,259,052 ( 0.07%) } . 548,568 ( 0.01%) fn regions( . &mut self, . a: ty::Region<'tcx>, . b: ty::Region<'tcx>, . ) -> RelateResult<'tcx, ty::Region<'tcx>> { . debug!("{}.regions({:?}, {:?})", self.tag(), a, b); 182,856 ( 0.00%) let origin = Subtype(Box::new(self.fields.trace.clone())); 365,712 ( 0.01%) self.fields . .infcx . .inner . .borrow_mut() . .unwrap_region_constraints() 365,712 ( 0.01%) .make_eqregion(origin, a, b); 121,904 ( 0.00%) Ok(a) 548,568 ( 0.01%) } . . fn consts( . &mut self, . a: &'tcx ty::Const<'tcx>, . b: &'tcx ty::Const<'tcx>, . ) -> RelateResult<'tcx, &'tcx ty::Const<'tcx>> { 2,417 ( 0.00%) self.fields.infcx.super_combine_consts(self, a, b) . } . 20 ( 0.00%) fn binders( . &mut self, . a: ty::Binder<'tcx, T>, . b: ty::Binder<'tcx, T>, . ) -> RelateResult<'tcx, ty::Binder<'tcx, T>> . where . T: Relate<'tcx>, . { 4 ( 0.00%) if a.skip_binder().has_escaping_bound_vars() || b.skip_binder().has_escaping_bound_vars() { . self.fields.higher_ranked_sub(a, b, self.a_is_expected)?; . self.fields.higher_ranked_sub(b, a, self.a_is_expected) . } else { . // Fast path for the common case. 10 ( 0.00%) self.relate(a.skip_binder(), b.skip_binder())?; 12 ( 0.00%) Ok(a) . } 18 ( 0.00%) } . } . . impl<'tcx> ConstEquateRelation<'tcx> for Equate<'_, '_, 'tcx> { . fn const_equate_obligation(&mut self, a: &'tcx ty::Const<'tcx>, b: &'tcx ty::Const<'tcx>) { . self.fields.add_const_equate_obligation(self.a_is_expected, a, b); . } . } 1,010,622 ( 0.02%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/resolve.rs -------------------------------------------------------------------------------- Ir -- line 22 ---------------------------------------- . #[inline] . pub fn new(infcx: &'a InferCtxt<'a, 'tcx>) -> Self { . OpportunisticVarResolver { infcx } . } . } . . impl<'a, 'tcx> TypeFolder<'tcx> for OpportunisticVarResolver<'a, 'tcx> { . fn tcx<'b>(&'b self) -> TyCtxt<'tcx> { 71,512 ( 0.00%) self.infcx.tcx . } . 1,372,187 ( 0.02%) fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> { 1,646,189 ( 0.03%) if !t.has_infer_types_or_consts() { . t // micro-optimize -- if there is nothing in this type that this fold affects... . } else { 401,499 ( 0.01%) let t = self.infcx.shallow_resolve(t); 1,600,932 ( 0.03%) t.super_fold_with(self) . } 3,309,675 ( 0.06%) } . 265 ( 0.00%) fn fold_const(&mut self, ct: &'tcx Const<'tcx>) -> &'tcx Const<'tcx> { 2,219 ( 0.00%) if !ct.has_infer_types_or_consts() { . ct // micro-optimize -- if there is nothing in this const that this fold affects... . } else { 809 ( 0.00%) let ct = self.infcx.shallow_resolve(ct); 4,504 ( 0.00%) ct.super_fold_with(self) . } 125 ( 0.00%) } . . fn fold_mir_const(&mut self, constant: mir::ConstantKind<'tcx>) -> mir::ConstantKind<'tcx> { . constant.super_fold_with(self) . } . } . . /// The opportunistic region resolver opportunistically resolves regions . /// variables to the variable with the least variable id. It is used when -- line 57 ---------------------------------------- -- line 60 ---------------------------------------- . /// . /// If you want to resolve type and const variables as well, call . /// [InferCtxt::resolve_vars_if_possible] first. . pub struct OpportunisticRegionResolver<'a, 'tcx> { . infcx: &'a InferCtxt<'a, 'tcx>, . } . . impl<'a, 'tcx> OpportunisticRegionResolver<'a, 'tcx> { 1,018 ( 0.00%) pub fn new(infcx: &'a InferCtxt<'a, 'tcx>) -> Self { . OpportunisticRegionResolver { infcx } 1,018 ( 0.00%) } . } . . impl<'a, 'tcx> TypeFolder<'tcx> for OpportunisticRegionResolver<'a, 'tcx> { . fn tcx<'b>(&'b self) -> TyCtxt<'tcx> { 2,006,799 ( 0.03%) self.infcx.tcx 1,002,628 ( 0.02%) } . . fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> { 3,344 ( 0.00%) if !t.has_infer_regions() { . t // micro-optimize -- if there is nothing in this type that this fold affects... . } else { 4,250 ( 0.00%) t.super_fold_with(self) . } . } . 5,835 ( 0.00%) fn fold_region(&mut self, r: ty::Region<'tcx>) -> ty::Region<'tcx> { 2,334 ( 0.00%) match *r { . ty::ReVar(rid) => { 1,167 ( 0.00%) let resolved = self . .infcx . .inner . .borrow_mut() . .unwrap_region_constraints() . .opportunistic_resolve_var(rid); 3,501 ( 0.00%) self.tcx().reuse_or_mk_region(r, ty::ReVar(resolved)) . } . _ => r, . } 7,002 ( 0.00%) } . . fn fold_const(&mut self, ct: &'tcx ty::Const<'tcx>) -> &'tcx ty::Const<'tcx> { . if !ct.has_infer_regions() { . ct // micro-optimize -- if there is nothing in this const that this fold affects... . } else { . ct.super_fold_with(self) . } . } -- line 107 ---------------------------------------- -- line 165 ---------------------------------------- . . /// Full type resolution replaces all type and region variables with . /// their concrete results. If any variable cannot be replaced (never unified, etc) . /// then an `Err` result is returned. . pub fn fully_resolve<'a, 'tcx, T>(infcx: &InferCtxt<'a, 'tcx>, value: T) -> FixupResult<'tcx, T> . where . T: TypeFoldable<'tcx>, . { 129,338 ( 0.00%) value.try_fold_with(&mut FullTypeResolver { infcx }) . } . . // N.B. This type is not public because the protocol around checking the . // `err` field is not enforceable otherwise. . struct FullTypeResolver<'a, 'tcx> { . infcx: &'a InferCtxt<'a, 'tcx>, . } . . impl<'a, 'tcx> TypeFolder<'tcx> for FullTypeResolver<'a, 'tcx> { . type Error = FixupError<'tcx>; . . fn tcx<'b>(&'b self) -> TyCtxt<'tcx> { 65,616 ( 0.00%) self.infcx.tcx . } . } . . impl<'a, 'tcx> FallibleTypeFolder<'tcx> for FullTypeResolver<'a, 'tcx> { 207,976 ( 0.00%) fn try_fold_ty(&mut self, t: Ty<'tcx>) -> Result, Self::Error> { 103,988 ( 0.00%) if !t.needs_infer() { . Ok(t) // micro-optimize -- if there is nothing in this type that this fold affects... . } else { 71,506 ( 0.00%) let t = self.infcx.shallow_resolve(t); 71,506 ( 0.00%) match *t.kind() { . ty::Infer(ty::TyVar(vid)) => Err(FixupError::UnresolvedTy(vid)), . ty::Infer(ty::IntVar(vid)) => Err(FixupError::UnresolvedIntTy(vid)), . ty::Infer(ty::FloatVar(vid)) => Err(FixupError::UnresolvedFloatTy(vid)), . ty::Infer(_) => { . bug!("Unexpected type in full type resolver: {:?}", t); . } 250,271 ( 0.00%) _ => t.try_super_fold_with(self), . } . } 727,916 ( 0.01%) } . 30,356 ( 0.00%) fn try_fold_region(&mut self, r: ty::Region<'tcx>) -> Result, Self::Error> { 30,356 ( 0.00%) match *r { 9,989 ( 0.00%) ty::ReVar(rid) => Ok(self . .infcx . .lexical_region_resolutions . .borrow() . .as_ref() . .expect("region resolution not performed") . .resolve_var(rid)), . _ => Ok(r), . } 75,890 ( 0.00%) } . 1,310 ( 0.00%) fn try_fold_const( . &mut self, . c: &'tcx ty::Const<'tcx>, . ) -> Result<&'tcx ty::Const<'tcx>, Self::Error> { 262 ( 0.00%) if !c.needs_infer() { . Ok(c) // micro-optimize -- if there is nothing in this const that this fold affects... . } else { 62 ( 0.00%) let c = self.infcx.shallow_resolve(c); 62 ( 0.00%) match c.val { . ty::ConstKind::Infer(InferConst::Var(vid)) => { . return Err(FixupError::UnresolvedConst(vid)); . } . ty::ConstKind::Infer(InferConst::Fresh(_)) => { . bug!("Unexpected const in full const resolver: {:?}", c); . } . _ => {} . } 186 ( 0.00%) c.try_super_fold_with(self) . } 2,096 ( 0.00%) } . } 494,756 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/std/src/collections/hash/map.rs -------------------------------------------------------------------------------- Ir -- line 270 ---------------------------------------- . /// . /// let s = RandomState::new(); . /// let mut map = HashMap::with_hasher(s); . /// map.insert(1, 2); . /// ``` . #[inline] . #[stable(feature = "hashmap_build_hasher", since = "1.7.0")] . pub fn with_hasher(hash_builder: S) -> HashMap { 1,887,002 ( 0.03%) HashMap { base: base::HashMap::with_hasher(hash_builder) } . } . . /// Creates an empty `HashMap` with the specified capacity, using `hash_builder` . /// to hash the keys. . /// . /// The hash map will be able to hold at least `capacity` elements without . /// reallocating. If `capacity` is 0, the hash map will not allocate. . /// -- line 286 ---------------------------------------- -- line 300 ---------------------------------------- . /// . /// let s = RandomState::new(); . /// let mut map = HashMap::with_capacity_and_hasher(10, s); . /// map.insert(1, 2); . /// ``` . #[inline] . #[stable(feature = "hashmap_build_hasher", since = "1.7.0")] . pub fn with_capacity_and_hasher(capacity: usize, hash_builder: S) -> HashMap { 4,927 ( 0.00%) HashMap { base: base::HashMap::with_capacity_and_hasher(capacity, hash_builder) } . } . . /// Returns the number of elements the map can hold without reallocating. . /// . /// This number is a lower bound; the `HashMap` might be able to hold . /// more, but is guaranteed to be able to hold at least this many. . /// . /// # Examples -- line 316 ---------------------------------------- -- line 468 ---------------------------------------- . /// ]); . /// . /// for (key, val) in map.iter() { . /// println!("key: {} val: {}", key, val); . /// } . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn iter(&self) -> Iter<'_, K, V> { 20,040 ( 0.00%) Iter { base: self.base.iter() } . } . . /// An iterator visiting all key-value pairs in arbitrary order, . /// with mutable references to the values. . /// The iterator element type is `(&'a K, &'a mut V)`. . /// . /// # Examples . /// -- line 484 ---------------------------------------- -- line 643 ---------------------------------------- . /// let mut a = HashMap::new(); . /// a.insert(1, "a"); . /// a.clear(); . /// assert!(a.is_empty()); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn clear(&mut self) { 1 ( 0.00%) self.base.clear(); . } . . /// Returns a reference to the map's [`BuildHasher`]. . /// . /// # Examples . /// . /// ``` . /// use std::collections::HashMap; -- line 659 ---------------------------------------- -- line 688 ---------------------------------------- . /// ``` . /// use std::collections::HashMap; . /// let mut map: HashMap<&str, i32> = HashMap::new(); . /// map.reserve(10); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn reserve(&mut self, additional: usize) { 1 ( 0.00%) self.base.reserve(additional) . } . . /// Tries to reserve capacity for at least `additional` more elements to be inserted . /// in the given `HashMap`. The collection may reserve more space to avoid . /// frequent reallocations. . /// . /// # Errors . /// -- line 704 ---------------------------------------- -- line 784 ---------------------------------------- . /// assert_eq!(letters[&'s'], 2); . /// assert_eq!(letters[&'t'], 3); . /// assert_eq!(letters[&'u'], 1); . /// assert_eq!(letters.get(&'y'), None); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn entry(&mut self, key: K) -> Entry<'_, K, V> { 2,149,270 ( 0.04%) map_entry(self.base.rustc_entry(key)) . } . . /// Returns a 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. . /// -- line 800 ---------------------------------------- -- line 805 ---------------------------------------- . /// . /// let mut map = HashMap::new(); . /// map.insert(1, "a"); . /// assert_eq!(map.get(&1), Some(&"a")); . /// assert_eq!(map.get(&2), None); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[inline] 572,054 ( 0.01%) pub fn get(&self, k: &Q) -> Option<&V> . where . K: Borrow, . Q: Hash + Eq, . { . self.base.get(k) 814,168 ( 0.01%) } . . /// 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 . /// [`Hash`] and [`Eq`] on the borrowed form *must* match those for . /// the key type. . /// . /// # Examples -- line 827 ---------------------------------------- -- line 862 ---------------------------------------- . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn contains_key(&self, k: &Q) -> bool . where . K: Borrow, . Q: Hash + Eq, . { 108,694 ( 0.00%) self.base.contains_key(k) . } . . /// 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. . /// -- line 878 ---------------------------------------- -- line 890 ---------------------------------------- . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn get_mut(&mut self, k: &Q) -> Option<&mut V> . where . K: Borrow, . Q: Hash + Eq, . { 647 ( 0.00%) self.base.get_mut(k) . } . . /// Inserts a key-value pair into the map. . /// . /// If the map did not have this key present, [`None`] is returned. . /// . /// If the map did have this key present, the value is updated, and the old . /// value is returned. The key is not updated, though; this matters for -- line 906 ---------------------------------------- -- line 920 ---------------------------------------- . /// . /// map.insert(37, "b"); . /// assert_eq!(map.insert(37, "c"), Some("b")); . /// assert_eq!(map[&37], "c"); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn insert(&mut self, k: K, v: V) -> Option { 4,439,818 ( 0.08%) self.base.insert(k, v) . } . . /// Tries to insert a key-value pair into the map, and returns . /// a mutable reference to the value in the entry. . /// . /// If the map already had this key present, nothing is updated, and . /// an error containing the occupied entry and the value is returned. . /// -- line 936 ---------------------------------------- -- line 978 ---------------------------------------- . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn remove(&mut self, k: &Q) -> Option . where . K: Borrow, . Q: Hash + Eq, . { 173,491 ( 0.00%) self.base.remove(k) . } . . /// 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 994 ---------------------------------------- -- line 1083 ---------------------------------------- . impl Clone for HashMap . where . K: Clone, . V: Clone, . S: Clone, . { . #[inline] . fn clone(&self) -> Self { 3,109 ( 0.00%) Self { base: self.base.clone() } . } . . #[inline] . fn clone_from(&mut self, other: &Self) { . self.base.clone_from(&other.base); . } . } . -- line 1099 ---------------------------------------- -- line 1155 ---------------------------------------- . type Output = V; . . /// Returns a reference to the value corresponding to the supplied key. . /// . /// # Panics . /// . /// Panics if the key is not present in the `HashMap`. . #[inline] 3,848 ( 0.00%) fn index(&self, key: &Q) -> &V { . self.get(key).expect("no entry found for key") 6,544 ( 0.00%) } . } . . #[stable(feature = "std_collections_from_array", since = "1.56.0")] . // Note: as what is currently the most convenient built-in way to construct . // a HashMap, a simple usage of this function must not *require* the user . // to provide a type annotation in order to infer the third type parameter . // (the hasher parameter, conventionally "S"). . // To that end, this impl is defined using RandomState as the concrete -- line 1173 ---------------------------------------- -- line 1557 ---------------------------------------- . /// Creates a `RawEntryMut` from the given key and its hash. . #[inline] . #[unstable(feature = "hash_raw_entry", issue = "56167")] . pub fn from_key_hashed_nocheck(self, hash: u64, k: &Q) -> RawEntryMut<'a, K, V, S> . where . K: Borrow, . Q: Eq, . { 9,038,927 ( 0.16%) map_raw_entry(self.map.base.raw_entry_mut().from_key_hashed_nocheck(hash, k)) . } . . /// Creates a `RawEntryMut` from the given hash. . #[inline] . #[unstable(feature = "hash_raw_entry", issue = "56167")] . pub fn from_hash(self, hash: u64, is_match: F) -> RawEntryMut<'a, K, V, S> . where . for<'b> F: FnMut(&'b K) -> bool, -- line 1573 ---------------------------------------- -- line 1594 ---------------------------------------- . /// Access an entry by a key and its hash. . #[inline] . #[unstable(feature = "hash_raw_entry", issue = "56167")] . pub fn from_key_hashed_nocheck(self, hash: u64, k: &Q) -> Option<(&'a K, &'a V)> . where . K: Borrow, . Q: Hash + Eq, . { 4,786,662 ( 0.08%) self.map.base.raw_entry().from_key_hashed_nocheck(hash, k) . } . . /// Access an entry by hash. . #[inline] . #[unstable(feature = "hash_raw_entry", issue = "56167")] . pub fn from_hash(self, hash: u64, is_match: F) -> Option<(&'a K, &'a V)> . where . F: FnMut(&K) -> bool, -- line 1610 ---------------------------------------- -- line 2338 ---------------------------------------- . /// assert_eq!(map["poneyland"], 3); . /// . /// *map.entry("poneyland").or_insert(10) *= 2; . /// assert_eq!(map["poneyland"], 6); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn or_insert(self, default: V) -> &'a mut V { 41,584 ( 0.00%) match self { . Occupied(entry) => entry.into_mut(), . Vacant(entry) => entry.insert(default), . } . } . . /// Ensures a value is in the entry by inserting the result of the default function if empty, . /// and returns a mutable reference to the value in the entry. . /// -- line 2354 ---------------------------------------- -- line 2362 ---------------------------------------- . /// . /// map.entry("poneyland").or_insert_with(|| s); . /// . /// assert_eq!(map["poneyland"], "hoho".to_string()); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn or_insert_with V>(self, default: F) -> &'a mut V { 329,691 ( 0.01%) match self { . Occupied(entry) => entry.into_mut(), 2,060 ( 0.00%) Vacant(entry) => entry.insert(default()), . } . } . . /// Ensures a value is in the entry by inserting, if empty, the result of the default function. . /// This method allows for generating key-derived values for insertion by providing the default . /// function a reference to the key that was moved during the `.entry(key)` method call. . /// . /// The reference to the moved key is provided so that cloning or copying the key is -- line 2380 ---------------------------------------- -- line 2443 ---------------------------------------- . /// assert_eq!(map["poneyland"], 43); . /// ``` . #[inline] . #[stable(feature = "entry_and_modify", since = "1.26.0")] . pub fn and_modify(self, f: F) -> Self . where . F: FnOnce(&mut V), . { 18 ( 0.00%) match self { . Occupied(mut entry) => { . f(entry.get_mut()); . Occupied(entry) . } . Vacant(entry) => Vacant(entry), . } . } . -- line 2459 ---------------------------------------- -- line 2496 ---------------------------------------- . /// map.entry("poneyland").or_default(); . /// . /// assert_eq!(map["poneyland"], None); . /// # } . /// ``` . #[inline] . #[stable(feature = "entry_or_default", since = "1.28.0")] . pub fn or_default(self) -> &'a mut V { 59,518 ( 0.00%) match self { . Occupied(entry) => entry.into_mut(), . Vacant(entry) => entry.insert(Default::default()), . } . } . } . . impl<'a, K, V> OccupiedEntry<'a, K, V> { . /// Gets a reference to the key in the entry. -- line 2512 ---------------------------------------- -- line 2790 ---------------------------------------- . /// if let Entry::Vacant(o) = map.entry("poneyland") { . /// o.insert(37); . /// } . /// assert_eq!(map["poneyland"], 37); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn insert(self, value: V) -> &'a mut V { 441,533 ( 0.01%) self.base.insert(value) . } . . /// Sets the value of the entry with the `VacantEntry`'s key, . /// and returns an `OccupiedEntry`. . /// . /// # Examples . /// . /// ``` -- line 2806 ---------------------------------------- -- line 2823 ---------------------------------------- . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl FromIterator<(K, V)> for HashMap . where . K: Eq + Hash, . S: BuildHasher + Default, . { 229 ( 0.00%) fn from_iter>(iter: T) -> HashMap { . let mut map = HashMap::with_hasher(Default::default()); . map.extend(iter); . map 230 ( 0.00%) } . } . . /// Inserts all new key-values from the iterator and replaces values with existing . /// keys with new values returned from the iterator. . #[stable(feature = "rust1", since = "1.0.0")] . impl Extend<(K, V)> for HashMap . where . K: Eq + Hash, . S: BuildHasher, . { . #[inline] . fn extend>(&mut self, iter: T) { 100,850 ( 0.00%) self.base.extend(iter) . } . . #[inline] . fn extend_one(&mut self, (k, v): (K, V)) { . self.base.insert(k, v); . } . . #[inline] -- line 2856 ---------------------------------------- -- line 2915 ---------------------------------------- . /// . /// let s = RandomState::new(); . /// ``` . #[inline] . #[allow(deprecated)] . // rand . #[must_use] . #[stable(feature = "hashmap_build_hasher", since = "1.7.0")] 4 ( 0.00%) pub fn new() -> RandomState { . // Historically this function did not cache keys from the OS and instead . // simply always called `rand::thread_rng().gen()` twice. In #31356 it . // was discovered, however, that because we re-seed the thread-local RNG . // from the OS periodically that this can cause excessive slowdown when . // many hash maps are created on a thread. To solve this performance . // trap we cache the first set of randomly generated keys per-thread. . // . // Later in #36481 it was discovered that exposing a deterministic . // iteration order allows a form of DOS attack. To counter that we . // increment one of the seeds on every RandomState creation, giving . // every corresponding HashMap a different iteration order. . thread_local!(static KEYS: Cell<(u64, u64)> = { 2 ( 0.00%) Cell::new(sys::hashmap_random_keys()) . }); . 28 ( 0.00%) KEYS.with(|keys| { 61 ( 0.00%) let (k0, k1) = keys.get(); 20 ( 0.00%) keys.set((k0.wrapping_add(1), k1)); 8 ( 0.00%) RandomState { k0, k1 } 16 ( 0.00%) }) 8 ( 0.00%) } . } . . #[stable(feature = "hashmap_build_hasher", since = "1.7.0")] . impl BuildHasher for RandomState { . type Hasher = DefaultHasher; . #[inline] . #[allow(deprecated)] 30 ( 0.00%) fn build_hasher(&self) -> DefaultHasher { 64,681 ( 0.00%) DefaultHasher(SipHasher13::new_with_keys(self.k0, self.k1)) 12 ( 0.00%) } . } . . /// The default [`Hasher`] used by [`RandomState`]. . /// . /// The internal algorithm is not specified, and so it and its hashes should . /// not be relied upon over releases. . #[stable(feature = "hashmap_default_hasher", since = "1.13.0")] . #[allow(deprecated)] -- line 2962 ---------------------------------------- -- line 2967 ---------------------------------------- . /// Creates a new `DefaultHasher`. . /// . /// This hasher is not guaranteed to be the same as all other . /// `DefaultHasher` instances, but is the same as all other `DefaultHasher` . /// instances created through `new` or `default`. . #[stable(feature = "hashmap_default_hasher", since = "1.13.0")] . #[allow(deprecated)] . #[must_use] 3 ( 0.00%) pub fn new() -> DefaultHasher { 12 ( 0.00%) DefaultHasher(SipHasher13::new_with_keys(0, 0)) 3 ( 0.00%) } . } . . #[stable(feature = "hashmap_default_hasher", since = "1.13.0")] . impl Default for DefaultHasher { . /// Creates a new `DefaultHasher` using [`new`]. . /// See its documentation for more. . /// . /// [`new`]: DefaultHasher::new -- line 2985 ---------------------------------------- -- line 2986 ---------------------------------------- . fn default() -> DefaultHasher { . DefaultHasher::new() . } . } . . #[stable(feature = "hashmap_default_hasher", since = "1.13.0")] . impl Hasher for DefaultHasher { . #[inline] 98,776 ( 0.00%) fn write(&mut self, msg: &[u8]) { 12 ( 0.00%) self.0.write(msg) 98,752 ( 0.00%) } . . #[inline] 12 ( 0.00%) fn finish(&self) -> u64 { 12 ( 0.00%) self.0.finish() 12 ( 0.00%) } . } . . #[stable(feature = "hashmap_build_hasher", since = "1.7.0")] . impl Default for RandomState { . /// Constructs a new `RandomState`. . #[inline] 4 ( 0.00%) fn default() -> RandomState { 12 ( 0.00%) RandomState::new() 8 ( 0.00%) } . } . . #[stable(feature = "std_debug", since = "1.16.0")] . impl fmt::Debug for RandomState { . fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { . f.debug_struct("RandomState").finish_non_exhaustive() . } . } . . #[inline] . fn map_entry<'a, K: 'a, V: 'a>(raw: base::RustcEntry<'a, K, V>) -> Entry<'a, K, V> { 141,922 ( 0.00%) match raw { 683 ( 0.00%) base::RustcEntry::Occupied(base) => Entry::Occupied(OccupiedEntry { base }), 3,483 ( 0.00%) base::RustcEntry::Vacant(base) => Entry::Vacant(VacantEntry { base }), . } . } . . #[inline] . pub(super) fn map_try_reserve_error(err: hashbrown::TryReserveError) -> TryReserveError { . match err { . hashbrown::TryReserveError::CapacityOverflow => { . TryReserveErrorKind::CapacityOverflow.into() -- line 3032 ---------------------------------------- -- line 3036 ---------------------------------------- . } . } . } . . #[inline] . fn map_raw_entry<'a, K: 'a, V: 'a, S: 'a>( . raw: base::RawEntryMut<'a, K, V, S>, . ) -> RawEntryMut<'a, K, V, S> { 7,033,956 ( 0.12%) match raw { . base::RawEntryMut::Occupied(base) => RawEntryMut::Occupied(RawOccupiedEntryMut { base }), . base::RawEntryMut::Vacant(base) => RawEntryMut::Vacant(RawVacantEntryMut { base }), . } . } . . #[allow(dead_code)] . fn assert_covariance() { . fn map_key<'new>(v: HashMap<&'static str, u8>) -> HashMap<&'new str, u8> { -- line 3052 ---------------------------------------- 4,914,263 ( 0.08%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/option.rs -------------------------------------------------------------------------------- Ir -- line 504 ---------------------------------------- . use crate::panicking::{panic, panic_str}; . use crate::pin::Pin; . use crate::{ . convert, hint, mem, . ops::{self, ControlFlow, Deref, DerefMut}, . }; . . /// The `Option` type. See [the module level documentation](self) for more. 5,510,494 ( 0.10%) #[derive(Copy, PartialEq, PartialOrd, Eq, Ord, Debug, Hash)] . #[rustc_diagnostic_item = "Option"] . #[stable(feature = "rust1", since = "1.0.0")] . pub enum Option { . /// No value. . #[lang = "None"] . #[stable(feature = "rust1", since = "1.0.0")] . None, . /// Some value of type `T`. . #[lang = "Some"] . #[stable(feature = "rust1", since = "1.0.0")] 24,184 ( 0.00%) Some(#[stable(feature = "rust1", since = "1.0.0")] T), . } . . ///////////////////////////////////////////////////////////////////////////// . // Type implementation . ///////////////////////////////////////////////////////////////////////////// . . impl Option { . ///////////////////////////////////////////////////////////////////////// -- line 531 ---------------------------------------- -- line 542 ---------------------------------------- . /// . /// let x: Option = None; . /// assert_eq!(x.is_some(), false); . /// ``` . #[must_use = "if you intended to assert that this has a value, consider `.unwrap()` instead"] . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_option", since = "1.48.0")] 8,674 ( 0.00%) pub const fn is_some(&self) -> bool { 3,997,486 ( 0.07%) matches!(*self, Some(_)) 21,685 ( 0.00%) } . . /// Returns `true` if the option is a [`Some`] wrapping a value matching the predicate. . /// . /// # Examples . /// . /// ``` . /// #![feature(is_some_with)] . /// -- line 560 ---------------------------------------- -- line 585 ---------------------------------------- . /// let x: Option = None; . /// assert_eq!(x.is_none(), true); . /// ``` . #[must_use = "if you intended to assert that this doesn't have a value, consider \ . `.and_then(|_| panic!(\"`Option` had a value when expected `None`\"))` instead"] . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_option", since = "1.48.0")] 3,530 ( 0.00%) pub const fn is_none(&self) -> bool { 5,295 ( 0.00%) !self.is_some() 7,060 ( 0.00%) } . . ///////////////////////////////////////////////////////////////////////// . // Adapter for working with references . ///////////////////////////////////////////////////////////////////////// . . /// Converts from `&Option` to `Option<&T>`. . /// . /// # Examples -- line 603 ---------------------------------------- -- line 615 ---------------------------------------- . /// // First, cast `Option` to `Option<&String>` with `as_ref`, . /// // then consume *that* with `map`, leaving `text` on the stack. . /// let text_length: Option = text.as_ref().map(|s| s.len()); . /// println!("still can print text: {:?}", text); . /// ``` . #[inline] . #[rustc_const_stable(feature = "const_option", since = "1.48.0")] . #[stable(feature = "rust1", since = "1.0.0")] 3,213 ( 0.00%) pub const fn as_ref(&self) -> Option<&T> { 8,139,714 ( 0.14%) match *self { 1,675 ( 0.00%) Some(ref x) => Some(x), 500 ( 0.00%) None => None, . } 3,213 ( 0.00%) } . . /// Converts from `&mut Option` to `Option<&mut T>`. . /// . /// # Examples . /// . /// ``` . /// let mut x = Some(2); . /// match x.as_mut() { -- line 636 ---------------------------------------- -- line 637 ---------------------------------------- . /// Some(v) => *v = 42, . /// None => {}, . /// } . /// assert_eq!(x, Some(42)); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option", issue = "67441")] 1,086 ( 0.00%) pub const fn as_mut(&mut self) -> Option<&mut T> { 5,527,055 ( 0.10%) match *self { 400 ( 0.00%) Some(ref mut x) => Some(x), 324 ( 0.00%) None => None, . } 1,086 ( 0.00%) } . . /// Converts from [Pin]<[&]Option\> to Option<[Pin]<[&]T>>. . /// . /// [&]: reference "shared reference" . #[inline] . #[must_use] . #[stable(feature = "pin", since = "1.33.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] -- line 658 ---------------------------------------- -- line 705 ---------------------------------------- . /// let x: Option<&str> = None; . /// x.expect("fruits are healthy"); // panics with `fruits are healthy` . /// ``` . #[inline] . #[track_caller] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option", issue = "67441")] . pub const fn expect(self, msg: &str) -> T { 4,076,712 ( 0.07%) match self { 857,510 ( 0.01%) Some(val) => val, . None => expect_failed(msg), . } . } . . /// Returns the contained [`Some`] value, consuming the `self` value. . /// . /// Because this function may panic, its use is generally discouraged. . /// Instead, prefer to use pattern matching and handle the [`None`] -- line 722 ---------------------------------------- -- line 741 ---------------------------------------- . /// ```should_panic . /// let x: Option<&str> = None; . /// assert_eq!(x.unwrap(), "air"); // fails . /// ``` . #[inline] . #[track_caller] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option", issue = "67441")] 5,171 ( 0.00%) pub const fn unwrap(self) -> T { 5,008,665 ( 0.09%) match self { 2,870,502 ( 0.05%) Some(val) => val, . None => panic("called `Option::unwrap()` on a `None` value"), . } 3,390 ( 0.00%) } . . /// Returns the contained [`Some`] value or a provided default. . /// . /// Arguments passed to `unwrap_or` are eagerly evaluated; if you are passing . /// the result of a function call, it is recommended to use [`unwrap_or_else`], . /// which is lazily evaluated. . /// . /// [`unwrap_or_else`]: Option::unwrap_or_else -- line 762 ---------------------------------------- -- line 765 ---------------------------------------- . /// . /// ``` . /// assert_eq!(Some("car").unwrap_or("bike"), "car"); . /// assert_eq!(None.unwrap_or("bike"), "bike"); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 5,563 ( 0.00%) pub const fn unwrap_or(self, default: T) -> T . where . T: ~const Drop, . { 1,423,458 ( 0.02%) match self { 3,572 ( 0.00%) Some(x) => x, 7,508 ( 0.00%) None => default, . } 9,719 ( 0.00%) } . . /// Returns the contained [`Some`] value or computes it from a closure. . /// . /// # Examples . /// . /// ``` . /// let k = 10; . /// assert_eq!(Some(4).unwrap_or_else(|| 2 * k), 4); . /// assert_eq!(None.unwrap_or_else(|| 2 * k), 20); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 621 ( 0.00%) pub const fn unwrap_or_else(self, f: F) -> T . where . F: ~const FnOnce() -> T, . F: ~const Drop, . { 1,623,736 ( 0.03%) match self { 163,754 ( 0.00%) Some(x) => x, 8,330 ( 0.00%) None => f(), . } 887 ( 0.00%) } . . /// Returns the contained [`Some`] value or a default. . /// . /// Consumes the `self` argument then, if [`Some`], returns the contained . /// value, otherwise if [`None`], returns the [default value] for that . /// type. . /// . /// # Examples -- line 812 ---------------------------------------- -- line 827 ---------------------------------------- . /// ``` . /// . /// [default value]: Default::default . /// [`parse`]: str::parse . /// [`FromStr`]: crate::str::FromStr . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 80 ( 0.00%) pub const fn unwrap_or_default(self) -> T . where . T: ~const Default, . { 12,749 ( 0.00%) match self { 15,284 ( 0.00%) Some(x) => x, 40 ( 0.00%) None => Default::default(), . } 40 ( 0.00%) } . . /// Returns the contained [`Some`] value, consuming the `self` value, . /// without checking that the value is not [`None`]. . /// . /// # Safety . /// . /// Calling this method on [`None`] is *[undefined behavior]*. . /// -- line 851 ---------------------------------------- -- line 861 ---------------------------------------- . /// ```no_run . /// let x: Option<&str> = None; . /// assert_eq!(unsafe { x.unwrap_unchecked() }, "air"); // Undefined behavior! . /// ``` . #[inline] . #[track_caller] . #[stable(feature = "option_result_unwrap_unchecked", since = "1.58.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 38 ( 0.00%) pub const unsafe fn unwrap_unchecked(self) -> T { 38 ( 0.00%) debug_assert!(self.is_some()); 133 ( 0.00%) match self { 57 ( 0.00%) Some(val) => val, . // SAFETY: the safety contract must be upheld by the caller. . None => unsafe { hint::unreachable_unchecked() }, . } 38 ( 0.00%) } . . ///////////////////////////////////////////////////////////////////////// . // Transforming contained values . ///////////////////////////////////////////////////////////////////////// . . /// Maps an `Option` to `Option` by applying a function to a contained value. . /// . /// # Examples -- line 884 ---------------------------------------- -- line 892 ---------------------------------------- . /// // `Option::map` takes self *by value*, consuming `maybe_some_string` . /// let maybe_some_len = maybe_some_string.map(|s| s.len()); . /// . /// assert_eq!(maybe_some_len, Some(13)); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 42,098 ( 0.00%) pub const fn map(self, f: F) -> Option . where . F: ~const FnOnce(T) -> U, . F: ~const Drop, . { 6,533,731 ( 0.11%) match self { 9,000,004 ( 0.16%) Some(x) => Some(f(x)), 152,305 ( 0.00%) None => None, . } 245,265 ( 0.00%) } . . /// Calls the provided closure with a reference to the contained value (if [`Some`]). . /// . /// # Examples . /// . /// ``` . /// #![feature(result_option_inspect)] . /// -- line 917 ---------------------------------------- -- line 954 ---------------------------------------- . /// assert_eq!(x.map_or(42, |v| v.len()), 3); . /// . /// let x: Option<&str> = None; . /// assert_eq!(x.map_or(42, |v| v.len()), 42); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 1,604 ( 0.00%) pub const fn map_or(self, default: U, f: F) -> U . where . F: ~const FnOnce(T) -> U, . F: ~const Drop, . U: ~const Drop, . { 1,569,798 ( 0.03%) match self { 104,524 ( 0.00%) Some(t) => f(t), 16,135 ( 0.00%) None => default, . } 2,010 ( 0.00%) } . . /// Computes a default function result (if none), or . /// applies a different function to the contained value (if any). . /// . /// # Examples . /// . /// ``` . /// let k = 21; -- line 980 ---------------------------------------- -- line 983 ---------------------------------------- . /// assert_eq!(x.map_or_else(|| 2 * k, |v| v.len()), 3); . /// . /// let x: Option<&str> = None; . /// assert_eq!(x.map_or_else(|| 2 * k, |v| v.len()), 42); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 24 ( 0.00%) pub const fn map_or_else(self, default: D, f: F) -> U . where . D: ~const FnOnce() -> U, . D: ~const Drop, . F: ~const FnOnce(T) -> U, . F: ~const Drop, . { 27,957 ( 0.00%) match self { 393 ( 0.00%) Some(t) => f(t), 24 ( 0.00%) None => default(), . } 48 ( 0.00%) } . . /// Transforms the `Option` into a [`Result`], mapping [`Some(v)`] to . /// [`Ok(v)`] and [`None`] to [`Err(err)`]. . /// . /// Arguments passed to `ok_or` are eagerly evaluated; if you are passing the . /// result of a function call, it is recommended to use [`ok_or_else`], which is . /// lazily evaluated. . /// -- line 1010 ---------------------------------------- -- line 1020 ---------------------------------------- . /// assert_eq!(x.ok_or(0), Ok("foo")); . /// . /// let x: Option<&str> = None; . /// assert_eq!(x.ok_or(0), Err(0)); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 41,707 ( 0.00%) pub const fn ok_or(self, err: E) -> Result . where . E: ~const Drop, . { 1,089,269 ( 0.02%) match self { 44,100 ( 0.00%) Some(v) => Ok(v), 2,676 ( 0.00%) None => Err(err), . } 66,831 ( 0.00%) } . . /// Transforms the `Option` into a [`Result`], mapping [`Some(v)`] to . /// [`Ok(v)`] and [`None`] to [`Err(err())`]. . /// . /// [`Ok(v)`]: Ok . /// [`Err(err())`]: Err . /// [`Some(v)`]: Some . /// -- line 1044 ---------------------------------------- -- line 1049 ---------------------------------------- . /// assert_eq!(x.ok_or_else(|| 0), Ok("foo")); . /// . /// let x: Option<&str> = None; . /// assert_eq!(x.ok_or_else(|| 0), Err(0)); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 1,377 ( 0.00%) pub const fn ok_or_else(self, err: F) -> Result . where . F: ~const FnOnce() -> E, . F: ~const Drop, . { 121,051 ( 0.00%) match self { 101,760 ( 0.00%) Some(v) => Ok(v), 36,107 ( 0.00%) None => Err(err()), . } 1,145 ( 0.00%) } . . /// Converts from `Option` (or `&Option`) to `Option<&T::Target>`. . /// . /// Leaves the original Option in-place, creating a new one with a reference . /// to the original one, additionally coercing the contents via [`Deref`]. . /// . /// # Examples . /// -- line 1074 ---------------------------------------- -- line 1080 ---------------------------------------- . /// assert_eq!(x.as_deref(), None); . /// ``` . #[stable(feature = "option_deref", since = "1.40.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn as_deref(&self) -> Option<&T::Target> . where . T: ~const Deref, . { 36,947 ( 0.00%) match self.as_ref() { . Some(t) => Some(t.deref()), . None => None, . } . } . . /// Converts from `Option` (or `&mut Option`) to `Option<&mut T::Target>`. . /// . /// Leaves the original `Option` in-place, creating a new one containing a mutable reference to -- line 1096 ---------------------------------------- -- line 1213 ---------------------------------------- . /// assert_eq!(Some(2).and_then(sq).and_then(sq), Some(16)); . /// assert_eq!(Some(2).and_then(sq).and_then(nope), None); . /// assert_eq!(Some(2).and_then(nope).and_then(sq), None); . /// assert_eq!(None.and_then(sq).and_then(sq), None); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 1,745 ( 0.00%) pub const fn and_then(self, f: F) -> Option . where . F: ~const FnOnce(T) -> Option, . F: ~const Drop, . { 224,333 ( 0.00%) match self { 53,533 ( 0.00%) Some(x) => f(x), 4 ( 0.00%) None => None, . } 87,091 ( 0.00%) } . . /// Returns [`None`] if the option is [`None`], otherwise calls `predicate` . /// with the wrapped value and returns: . /// . /// - [`Some(t)`] if `predicate` returns `true` (where `t` is the wrapped . /// value), and . /// - [`None`] if `predicate` returns `false`. . /// -- line 1238 ---------------------------------------- -- line 1257 ---------------------------------------- . #[stable(feature = "option_filter", since = "1.27.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn filter

(self, predicate: P) -> Self . where . T: ~const Drop, . P: ~const FnOnce(&T) -> bool, . P: ~const Drop, . { 21,414 ( 0.00%) if let Some(x) = self { 13,505 ( 0.00%) if predicate(&x) { . return Some(x); . } . } . None 3,630 ( 0.00%) } . . /// Returns the option if it contains a value, otherwise returns `optb`. . /// . /// Arguments passed to `or` are eagerly evaluated; if you are passing the . /// result of a function call, it is recommended to use [`or_else`], which is . /// lazily evaluated. . /// . /// [`or_else`]: Option::or_else -- line 1279 ---------------------------------------- -- line 1299 ---------------------------------------- . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn or(self, optb: Option) -> Option . where . T: ~const Drop, . { 20,961 ( 0.00%) match self { 644 ( 0.00%) Some(x) => Some(x), . None => optb, . } . } . . /// Returns the option if it contains a value, otherwise calls `f` and . /// returns the result. . /// . /// # Examples -- line 1316 ---------------------------------------- -- line 1321 ---------------------------------------- . /// . /// assert_eq!(Some("barbarians").or_else(vikings), Some("barbarians")); . /// assert_eq!(None.or_else(vikings), Some("vikings")); . /// assert_eq!(None.or_else(nobody), None); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 10,720 ( 0.00%) pub const fn or_else(self, f: F) -> Option . where . F: ~const FnOnce() -> Option, . F: ~const Drop, . { 74,178 ( 0.00%) match self { 37,058 ( 0.00%) Some(x) => Some(x), 6,206 ( 0.00%) None => f(), . } 10,888 ( 0.00%) } . . /// Returns [`Some`] if exactly one of `self`, `optb` is [`Some`], otherwise returns [`None`]. . /// . /// # Examples . /// . /// ``` . /// let x = Some(2); . /// let y: Option = None; -- line 1346 ---------------------------------------- -- line 1431 ---------------------------------------- . /// ``` . #[inline] . #[stable(feature = "option_entry", since = "1.20.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] . pub const fn get_or_insert(&mut self, value: T) -> &mut T . where . T: ~const Drop, . { 71,421 ( 0.00%) if let None = *self { 166,629 ( 0.00%) *self = Some(value); . } . . // SAFETY: a `None` variant for `self` would have been replaced by a `Some` . // variant in the code above. . unsafe { self.as_mut().unwrap_unchecked() } . } . . /// Inserts the default value into the option if it is [`None`], then -- line 1448 ---------------------------------------- -- line 1494 ---------------------------------------- . /// *y = 7; . /// } . /// . /// assert_eq!(x, Some(7)); . /// ``` . #[inline] . #[stable(feature = "option_entry", since = "1.20.0")] . #[rustc_const_unstable(feature = "const_option_ext", issue = "91930")] 57 ( 0.00%) pub const fn get_or_insert_with(&mut self, f: F) -> &mut T . where . F: ~const FnOnce() -> T, . F: ~const Drop, . { 851,895 ( 0.01%) if let None = *self { . // the compiler isn't smart enough to know that we are not dropping a `T` . // here and wants us to ensure `T` can be dropped at compile time. 37 ( 0.00%) mem::forget(mem::replace(self, Some(f()))) . } . . // SAFETY: a `None` variant for `self` would have been replaced by a `Some` . // variant in the code above. 209 ( 0.00%) unsafe { self.as_mut().unwrap_unchecked() } 95 ( 0.00%) } . . ///////////////////////////////////////////////////////////////////////// . // Misc . ///////////////////////////////////////////////////////////////////////// . . /// Takes the value out of the option, leaving a [`None`] in its place. . /// . /// # Examples -- line 1524 ---------------------------------------- -- line 1532 ---------------------------------------- . /// let mut x: Option = None; . /// let y = x.take(); . /// assert_eq!(x, None); . /// assert_eq!(y, None); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option", issue = "67441")] 30,972 ( 0.00%) pub const fn take(&mut self) -> Option { . // FIXME replace `mem::replace` by `mem::take` when the latter is const ready 31,898 ( 0.00%) mem::replace(self, None) 19,068 ( 0.00%) } . . /// Replaces the actual value in the option by the value given in parameter, . /// returning the old value if present, . /// leaving a [`Some`] in its place without deinitializing either one. . /// . /// # Examples . /// . /// ``` -- line 1551 ---------------------------------------- -- line 1558 ---------------------------------------- . /// let old = x.replace(3); . /// assert_eq!(x, Some(3)); . /// assert_eq!(old, None); . /// ``` . #[inline] . #[rustc_const_unstable(feature = "const_option", issue = "67441")] . #[stable(feature = "option_replace", since = "1.31.0")] . pub const fn replace(&mut self, value: T) -> Option { 5,496 ( 0.00%) mem::replace(self, Some(value)) . } . . /// Returns `true` if the option is a [`Some`] value containing the given value. . /// . /// # Examples . /// . /// ``` . /// #![feature(option_result_contains)] -- line 1574 ---------------------------------------- -- line 1706 ---------------------------------------- . /// let opt_x = Some(&x); . /// assert_eq!(opt_x, Some(&12)); . /// let copied = opt_x.copied(); . /// assert_eq!(copied, Some(12)); . /// ``` . #[must_use = "`self` will be dropped if the result is not used"] . #[stable(feature = "copied", since = "1.35.0")] . #[rustc_const_unstable(feature = "const_option", issue = "67441")] 48 ( 0.00%) pub const fn copied(self) -> Option . where . T: Copy, . { . // FIXME: this implementation, which sidesteps using `Option::map` since it's not const . // ready yet, should be reverted when possible to avoid code repetition 91,506 ( 0.00%) match self { 3,163,252 ( 0.05%) Some(&v) => Some(v), 4,243 ( 0.00%) None => None, . } 216 ( 0.00%) } . . /// Maps an `Option<&T>` to an `Option` by cloning the contents of the . /// option. . /// . /// # Examples . /// . /// ``` . /// let x = 12; -- line 1732 ---------------------------------------- -- line 1733 ---------------------------------------- . /// let opt_x = Some(&x); . /// assert_eq!(opt_x, Some(&12)); . /// let cloned = opt_x.cloned(); . /// assert_eq!(cloned, Some(12)); . /// ``` . #[must_use = "`self` will be dropped if the result is not used"] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_option_cloned", issue = "91582")] 37,481 ( 0.00%) pub const fn cloned(self) -> Option . where . T: ~const Clone, . { 343,475 ( 0.01%) match self { 625,542 ( 0.01%) Some(t) => Some(t.clone()), 30,592 ( 0.00%) None => None, . } 112,115 ( 0.00%) } . } . . impl Option<&mut T> { . /// Maps an `Option<&mut T>` to an `Option` by copying the contents of the . /// option. . /// . /// # Examples . /// -- line 1757 ---------------------------------------- -- line 1842 ---------------------------------------- . . ///////////////////////////////////////////////////////////////////////////// . // Trait implementations . ///////////////////////////////////////////////////////////////////////////// . . #[stable(feature = "rust1", since = "1.0.0")] . impl Clone for Option { . #[inline] 9,297 ( 0.00%) fn clone(&self) -> Self { 5,594,583 ( 0.10%) match self { 290,548 ( 0.01%) Some(x) => Some(x.clone()), 6,518 ( 0.00%) None => None, . } 1,434,906 ( 0.02%) } . . #[inline] . fn clone_from(&mut self, source: &Self) { . match (self, source) { . (Some(to), Some(from)) => to.clone_from(from), . (to, from) => *to = from.clone(), . } . } -- line 1863 ---------------------------------------- -- line 1870 ---------------------------------------- . /// . /// # Examples . /// . /// ``` . /// let opt: Option = Option::default(); . /// assert!(opt.is_none()); . /// ``` . #[inline] 626 ( 0.00%) fn default() -> Option { 626 ( 0.00%) None 1,878 ( 0.00%) } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl IntoIterator for Option { . type Item = T; . type IntoIter = IntoIter; . . /// Returns a consuming iterator over the possibly contained value. -- line 1888 ---------------------------------------- -- line 1894 ---------------------------------------- . /// let v: Vec<&str> = x.into_iter().collect(); . /// assert_eq!(v, ["string"]); . /// . /// let x = None; . /// let v: Vec<&str> = x.into_iter().collect(); . /// assert!(v.is_empty()); . /// ``` . #[inline] 12,862 ( 0.00%) fn into_iter(self) -> IntoIter { 42,663 ( 0.00%) IntoIter { inner: Item { opt: self } } 10,276 ( 0.00%) } . } . . #[stable(since = "1.4.0", feature = "option_iter")] . impl<'a, T> IntoIterator for &'a Option { . type Item = &'a T; . type IntoIter = Iter<'a, T>; . . fn into_iter(self) -> Iter<'a, T> { -- line 1912 ---------------------------------------- -- line 2000 ---------------------------------------- . struct Item { . opt: Option, . } . . impl Iterator for Item { . type Item = A; . . #[inline] 29,734 ( 0.00%) fn next(&mut self) -> Option { 12,743 ( 0.00%) self.opt.take() 18,134 ( 0.00%) } . . #[inline] 296 ( 0.00%) fn size_hint(&self) -> (usize, Option) { 145,478 ( 0.00%) match self.opt { 133 ( 0.00%) Some(_) => (1, Some(1)), 440 ( 0.00%) None => (0, Some(0)), . } 148 ( 0.00%) } . } . . impl DoubleEndedIterator for Item { . #[inline] . fn next_back(&mut self) -> Option { . self.opt.take() . } . } -- line 2026 ---------------------------------------- -- line 2131 ---------------------------------------- . inner: Item, . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl Iterator for IntoIter { . type Item = A; . . #[inline] 29,734 ( 0.00%) fn next(&mut self) -> Option { 12,743 ( 0.00%) self.inner.next() 18,134 ( 0.00%) } . #[inline] 296 ( 0.00%) fn size_hint(&self) -> (usize, Option) { 180 ( 0.00%) self.inner.size_hint() 148 ( 0.00%) } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl DoubleEndedIterator for IntoIter { . #[inline] . fn next_back(&mut self) -> Option { . self.inner.next_back() . } -- line 2153 ---------------------------------------- -- line 2241 ---------------------------------------- . #[rustc_const_unstable(feature = "const_convert", issue = "88674")] . impl const ops::Try for Option { . type Output = T; . type Residual = Option; . . #[inline] . fn from_output(output: Self::Output) -> Self { . Some(output) 6,870 ( 0.00%) } . . #[inline] 24,218 ( 0.00%) fn branch(self) -> ControlFlow { 2,377,981 ( 0.04%) match self { 267,632 ( 0.00%) Some(v) => ControlFlow::Continue(v), 2,134 ( 0.00%) None => ControlFlow::Break(None), . } 31,823 ( 0.00%) } . } . . #[unstable(feature = "try_trait_v2", issue = "84277")] . #[rustc_const_unstable(feature = "const_convert", issue = "88674")] . impl const ops::FromResidual for Option { . #[inline] 1,413 ( 0.00%) fn from_residual(residual: Option) -> Self { . match residual { 301,699 ( 0.01%) None => None, . } 3,530 ( 0.00%) } . } . . #[unstable(feature = "try_trait_v2_residual", issue = "91285")] . impl ops::Residual for Option { . type TryType = Option; . } . . impl Option> { -- line 2276 ---------------------------------------- 6,440,765 ( 0.11%) -------------------------------------------------------------------------------- -- 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 { 823,815 ( 0.01%) 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 95 ---------------------------------------- . } . . // `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. 12,511 ( 0.00%) pub fn new() -> FulfillmentContext<'tcx> { 152,380 ( 0.00%) FulfillmentContext { 21,886 ( 0.00%) predicates: ObligationForest::new(), . relationships: FxHashMap::default(), . register_region_obligations: true, . usable_in_snapshot: false, . } 12,511 ( 0.00%) } . . pub fn new_in_snapshot() -> FulfillmentContext<'tcx> { 117 ( 0.00%) FulfillmentContext { 39 ( 0.00%) predicates: ObligationForest::new(), . relationships: FxHashMap::default(), . register_region_obligations: true, . usable_in_snapshot: true, . } . } . . pub fn new_ignoring_regions() -> FulfillmentContext<'tcx> { 26,008 ( 0.00%) FulfillmentContext { 6,502 ( 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> { 158,066 ( 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<_, _> = 683,949 ( 0.01%) self.predicates.process_obligations(&mut FulfillProcessor { . selcx, 97,707 ( 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. 195,414 ( 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. 858 ( 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![]; 351 ( 0.00%) let normalized_ty = project::normalize_projection_type( . &mut selcx, . param_env, . projection_ty, 195 ( 0.00%) cause, . 0, . &mut obligations, . ); . self.register_predicate_obligations(infcx, obligations); . . debug!(?normalized_ty); . . normalized_ty . } . 493,344 ( 0.01%) 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. 246,672 ( 0.00%) let obligation = infcx.resolve_vars_if_possible(obligation); . . debug!(?obligation, "register_predicate_obligation"); . 493,344 ( 0.01%) assert!(!infcx.is_in_snapshot() || self.usable_in_snapshot); . 246,672 ( 0.00%) super::relationships::update(self, infcx, &obligation); . . self.predicates . .register_obligation(PendingPredicateObligation { obligation, stalled_on: vec![] }); 411,120 ( 0.01%) } . 341,808 ( 0.01%) fn select_all_or_error(&mut self, infcx: &InferCtxt<'_, 'tcx>) -> Vec> { . { 42,726 ( 0.00%) let errors = self.select_where_possible(infcx); 42,726 ( 0.00%) if !errors.is_empty() { . return errors; . } . } . 213,630 ( 0.00%) self.predicates.to_errors(CodeAmbiguity).into_iter().map(to_fulfillment_error).collect() 299,082 ( 0.01%) } . 790,330 ( 0.01%) fn select_where_possible( . &mut self, . infcx: &InferCtxt<'_, 'tcx>, . ) -> Vec> { . let mut selcx = SelectionContext::new(infcx); . self.select(&mut selcx) 711,297 ( 0.01%) } . 831 ( 0.00%) fn pending_obligations(&self) -> Vec> { . self.predicates.map_pending_obligations(|o| o.obligation.clone()) 1,108 ( 0.00%) } . . fn relationships(&mut self) -> &mut FxHashMap { 87 ( 0.00%) &mut self.relationships 87 ( 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. 2,632,560 ( 0.05%) 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 => { 1,102,113 ( 0.02%) let infer_var = pending_obligation.stalled_on[0]; 367,371 ( 0.01%) 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. 74,901 ( 0.00%) (|| { 149,289 ( 0.00%) for &infer_var in &pending_obligation.stalled_on { 6 ( 0.00%) if self.selcx.infcx().ty_or_const_infer_var_changed(infer_var) { . return true; . } . } . false . })() . } . }; . 224 ( 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; . } . 332,205 ( 0.01%) 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)] 1,107,350 ( 0.02%) 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; . 332,205 ( 0.01%) if obligation.predicate.has_infer_types_or_consts() { 43,597 ( 0.00%) obligation.predicate = 130,791 ( 0.00%) self.selcx.infcx().resolve_vars_if_possible(obligation.predicate); . } . . debug!(?obligation, ?obligation.cause, "process_obligation"); . . let infcx = self.selcx.infcx(); . 134,276 ( 0.00%) let binder = obligation.predicate.kind(); 775,145 ( 0.01%) match binder.no_bound_vars() { 33 ( 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)); . 8 ( 0.00%) self.process_trait_obligation( . obligation, 24 ( 0.00%) trait_obligation, . &mut pending_obligation.stalled_on, . ) . } . ty::PredicateKind::Projection(data) => { . let project_obligation = obligation.with(binder.rebind(data)); . 4 ( 0.00%) self.process_projection_obligation( . obligation, 12 ( 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)); . 336,705 ( 0.01%) self.process_trait_obligation( . obligation, 1,481,502 ( 0.03%) trait_obligation, . &mut pending_obligation.stalled_on, . ) . } . . ty::PredicateKind::RegionOutlives(data) => { 8,994 ( 0.00%) match infcx.region_outlives_predicate(&obligation.cause, Binder::dummy(data)) { 5,996 ( 0.00%) Ok(()) => ProcessResult::Changed(vec![]), . Err(_) => ProcessResult::Error(CodeSelectionError(Unimplemented)), . } . } . . ty::PredicateKind::TypeOutlives(ty::OutlivesPredicate(t_a, r_b)) => { 9,398 ( 0.00%) if self.register_region_obligations { 23,495 ( 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)); . 21,625 ( 0.00%) self.process_projection_obligation( . obligation, 64,875 ( 0.00%) project_obligation, . &mut pending_obligation.stalled_on, . ) . } . . ty::PredicateKind::ObjectSafe(trait_def_id) => { 384 ( 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) => { 1,701 ( 0.00%) match self.selcx.infcx().closure_kind(closure_substs) { . Some(closure_kind) => { 3,402 ( 0.00%) if closure_kind.extends(kind) { . ProcessResult::Changed(vec![]) . } else { . ProcessResult::Error(CodeSelectionError(Unimplemented)) . } . } . None => ProcessResult::Unchanged, . } . } . . ty::PredicateKind::WellFormed(arg) => { 196,441 ( 0.00%) match wf::obligations( . self.selcx.infcx(), 56,126 ( 0.00%) obligation.param_env, 56,126 ( 0.00%) obligation.cause.body_id, 84,189 ( 0.00%) obligation.recursion_depth + 1, . arg, . obligation.cause.span, . ) { . None => { 19,412 ( 0.00%) pending_obligation.stalled_on = 33,971 ( 0.00%) vec![TyOrConstInferVar::maybe_from_generic_arg(arg).unwrap()]; 9,706 ( 0.00%) ProcessResult::Unchanged . } 69,630 ( 0.00%) Some(os) => ProcessResult::Changed(mk_pending(os)), . } . } . . ty::PredicateKind::Subtype(subtype) => { 32,720 ( 0.00%) match self.selcx.infcx().subtype_predicate( . &obligation.cause, . obligation.param_env, . Binder::dummy(subtype), . ) { . None => { . // None means that both are unresolved. 13,650 ( 0.00%) pending_obligation.stalled_on = vec![ 2,730 ( 0.00%) TyOrConstInferVar::maybe_from_ty(subtype.a).unwrap(), 5,460 ( 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) => { 416 ( 0.00%) match self.selcx.infcx().coerce_predicate( . &obligation.cause, . obligation.param_env, . Binder::dummy(coerce), . ) { . None => { . // None means that both are unresolved. 130 ( 0.00%) pending_obligation.stalled_on = vec![ 26 ( 0.00%) TyOrConstInferVar::maybe_from_ty(coerce.a).unwrap(), 52 ( 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") . } . }, . } 996,615 ( 0.02%) } . 1,279,517 ( 0.02%) #[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>> { 67,343 ( 0.00%) let infcx = self.selcx.infcx(); 202,029 ( 0.00%) if obligation.predicate.is_global() { . // no type variables present, can use evaluation for better caching. . // FIXME: consider caching errors too. 12,456 ( 0.00%) if infcx.predicate_must_hold_considering_regions(obligation) { . debug!( . "selecting trait at depth {} evaluated to holds", . obligation.recursion_depth . ); 12,438 ( 0.00%) return ProcessResult::Changed(vec![]); . } . } . 427,868 ( 0.01%) match self.selcx.select(&trait_obligation) { . Ok(Some(impl_source)) => { . debug!("selecting trait at depth {} yielded Ok(Some)", obligation.recursion_depth); 925,866 ( 0.02%) 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, 9,687 ( 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 . ); . 9,687 ( 0.00%) ProcessResult::Unchanged . } . Err(selection_err) => { . debug!("selecting trait at depth {} yielded Err", obligation.recursion_depth); . . ProcessResult::Error(CodeSelectionError(selection_err)) . } . } . } . 47,586 ( 0.00%) fn process_projection_obligation( . &mut self, . obligation: &PredicateObligation<'tcx>, . project_obligation: PolyProjectionObligation<'tcx>, . stalled_on: &mut Vec>, . ) -> ProcessResult, FulfillmentErrorCode<'tcx>> { 4,326 ( 0.00%) let tcx = self.selcx.tcx(); . 12,978 ( 0.00%) if obligation.predicate.is_global() { . // no type variables present, can use evaluation for better caching. . // FIXME: consider caching errors too. 46 ( 0.00%) if self.selcx.infcx().predicate_must_hold_considering_regions(obligation) { 138 ( 0.00%) if let Some(key) = ProjectionCacheKey::from_poly_projection_predicate( . &mut self.selcx, 161 ( 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. 138 ( 0.00%) self.selcx . .infcx() . .inner . .borrow_mut() . .projection_cache() . .complete(key, EvaluationResult::EvaluatedToOk); . } 46 ( 0.00%) return ProcessResult::Changed(vec![]); . } else { . tracing::debug!("Does NOT hold: {:?}", obligation); . } . } . 30,121 ( 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, 1,978 ( 0.00%) project_obligation.predicate.map_bound(|pred| pred.projection_ty.substs), . )); 1,978 ( 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)), . } 34,608 ( 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| { 63,570 ( 0.00%) let mut walker = arg.walk(); 116,406 ( 0.00%) while let Some(c) = walker.next() { 13,110 ( 0.00%) if !c.has_infer_types_or_consts() { . walker.visited.remove(&c); 104 ( 0.00%) walker.skip_current_subtree(); . } . } . walker.visited.into_iter() . }) . .filter_map(TyOrConstInferVar::maybe_from_generic_arg) . } . . fn to_fulfillment_error<'tcx>( -- line 778 ---------------------------------------- 2,786,520 ( 0.05%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_privacy/src/lib.rs -------------------------------------------------------------------------------- Ir -- line 59 ---------------------------------------- . &mut self, . def_id: DefId, . kind: &str, . descr: &dyn fmt::Display, . ) -> ControlFlow; . . /// Not overridden, but used to actually visit types and traits. . fn skeleton(&mut self) -> DefIdVisitorSkeleton<'_, 'tcx, Self> { 400,105 ( 0.01%) DefIdVisitorSkeleton { . def_id_visitor: self, . visited_opaque_tys: Default::default(), . dummy: Default::default(), . } . } 7,416 ( 0.00%) fn visit(&mut self, ty_fragment: impl TypeFoldable<'tcx>) -> ControlFlow { . ty_fragment.visit_with(&mut self.skeleton()) 12,360 ( 0.00%) } 3,660 ( 0.00%) fn visit_trait(&mut self, trait_ref: TraitRef<'tcx>) -> ControlFlow { . self.skeleton().visit_trait(trait_ref) 3,660 ( 0.00%) } . fn visit_projection_ty( . &mut self, . projection: ty::ProjectionTy<'tcx>, . ) -> ControlFlow { 28 ( 0.00%) self.skeleton().visit_projection_ty(projection) . } . fn visit_predicates( . &mut self, . predicates: ty::GenericPredicates<'tcx>, . ) -> ControlFlow { 4,597 ( 0.00%) self.skeleton().visit_predicates(predicates) . } . } . . struct DefIdVisitorSkeleton<'v, 'tcx, V: ?Sized> { . def_id_visitor: &'v mut V, . visited_opaque_tys: FxHashSet, . dummy: PhantomData>, . } . . impl<'tcx, V> DefIdVisitorSkeleton<'_, 'tcx, V> . where . V: DefIdVisitor<'tcx> + ?Sized, . { . fn visit_trait(&mut self, trait_ref: TraitRef<'tcx>) -> ControlFlow { 610 ( 0.00%) let TraitRef { def_id, substs } = trait_ref; 403,384 ( 0.01%) self.def_id_visitor.visit_def_id(def_id, "trait", &trait_ref.print_only_trait_path())?; 610 ( 0.00%) if self.def_id_visitor.shallow() { ControlFlow::CONTINUE } else { substs.visit_with(self) } . } . 158,960 ( 0.00%) fn visit_projection_ty( . &mut self, . projection: ty::ProjectionTy<'tcx>, . ) -> ControlFlow { 127,168 ( 0.00%) let (trait_ref, assoc_substs) = 31,792 ( 0.00%) projection.trait_ref_and_own_substs(self.def_id_visitor.tcx()); . self.visit_trait(trait_ref)?; . if self.def_id_visitor.shallow() { . ControlFlow::CONTINUE . } else { . assoc_substs.iter().try_for_each(|subst| subst.visit_with(self)) . } 143,064 ( 0.00%) } . . fn visit_predicate(&mut self, predicate: ty::Predicate<'tcx>) -> ControlFlow { 10,792 ( 0.00%) match predicate.kind().skip_binder() { . ty::PredicateKind::Trait(ty::TraitPredicate { . trait_ref, . constness: _, . polarity: _, . }) => self.visit_trait(trait_ref), . ty::PredicateKind::Projection(ty::ProjectionPredicate { projection_ty, term }) => { 42 ( 0.00%) term.visit_with(self)?; 105 ( 0.00%) self.visit_projection_ty(projection_ty) . } . ty::PredicateKind::TypeOutlives(ty::OutlivesPredicate(ty, _region)) => { . ty.visit_with(self) . } . ty::PredicateKind::RegionOutlives(..) => ControlFlow::CONTINUE, . ty::PredicateKind::ConstEvaluatable(uv) . if self.def_id_visitor.tcx().features().generic_const_exprs => . { -- line 140 ---------------------------------------- -- line 157 ---------------------------------------- . ACNode::Leaf(leaf) => self.visit_const(leaf), . ACNode::Cast(_, _, ty) => self.visit_ty(ty), . ACNode::Binop(..) | ACNode::UnaryOp(..) | ACNode::FunctionCall(_, _) => { . ControlFlow::CONTINUE . } . }) . } . 32,179 ( 0.00%) fn visit_predicates( . &mut self, . predicates: ty::GenericPredicates<'tcx>, . ) -> ControlFlow { . let ty::GenericPredicates { parent: _, predicates } = predicates; . predicates.iter().try_for_each(|&(predicate, _span)| self.visit_predicate(predicate)) 36,776 ( 0.00%) } . } . . impl<'tcx, V> TypeVisitor<'tcx> for DefIdVisitorSkeleton<'_, 'tcx, V> . where . V: DefIdVisitor<'tcx> + ?Sized, . { . type BreakTy = V::BreakTy; . 2,310,162 ( 0.04%) fn visit_ty(&mut self, ty: Ty<'tcx>) -> ControlFlow { 257,767 ( 0.00%) let tcx = self.def_id_visitor.tcx(); . // InternalSubsts are not visited here because they are visited below in `super_visit_with`. 1,261,023 ( 0.02%) match *ty.kind() { 198,995 ( 0.00%) ty::Adt(&ty::AdtDef { did: def_id, .. }, ..) . | ty::Foreign(def_id) . | ty::FnDef(def_id, ..) . | ty::Closure(def_id, ..) . | ty::Generator(def_id, ..) => { 833,235 ( 0.01%) self.def_id_visitor.visit_def_id(def_id, "type", &ty)?; . if self.def_id_visitor.shallow() { . return ControlFlow::CONTINUE; . } . // Default type visitor doesn't visit signatures of fn types. . // Something like `fn() -> Priv {my_func}` is considered a private type even if . // `my_func` is public, so we need to visit signatures. 195,607 ( 0.00%) if let ty::FnDef(..) = ty.kind() { . tcx.fn_sig(def_id).visit_with(self)?; . } . // Inherent static methods don't have self type in substs. . // Something like `fn() {my_method}` type of the method . // `impl Pub { pub fn my_method() {} }` is considered a private type, . // so we need to visit the self type additionally. 316,716 ( 0.01%) if let Some(assoc_item) = tcx.opt_associated_item(def_id) { 17,930 ( 0.00%) if let ty::ImplContainer(impl_def_id) = assoc_item.container { 2,022 ( 0.00%) tcx.type_of(impl_def_id).visit_with(self)?; . } . } . } 31,736 ( 0.00%) ty::Projection(proj) => { . if self.def_id_visitor.skip_assoc_tys() { . // Visitors searching for minimal visibility/reachability want to . // conservatively approximate associated types like `::Alias` . // as visible/reachable even if both `Type` and `Trait` are private. . // Ideally, associated types should be substituted in the same way as . // free type aliases, but this isn't done yet. . return ControlFlow::CONTINUE; . } . // This will also visit substs if necessary, so we don't need to recurse. 156,523 ( 0.00%) return self.visit_projection_ty(proj); . } 381 ( 0.00%) ty::Dynamic(predicates, ..) => { . // All traits in the list are considered the "primary" part of the type . // and are visited by shallow visitors. 3,047 ( 0.00%) for predicate in predicates { 2,286 ( 0.00%) let trait_ref = match predicate.skip_binder() { 2,286 ( 0.00%) ty::ExistentialPredicate::Trait(trait_ref) => trait_ref, . ty::ExistentialPredicate::Projection(proj) => proj.trait_ref(tcx), . ty::ExistentialPredicate::AutoTrait(def_id) => { . ty::ExistentialTraitRef { def_id, substs: InternalSubsts::empty() } . } . }; 762 ( 0.00%) let ty::ExistentialTraitRef { def_id, substs: _ } = trait_ref; 4,569 ( 0.00%) self.def_id_visitor.visit_def_id(def_id, "trait", &trait_ref)?; . } . } . ty::Opaque(def_id, ..) => { . // Skip repeated `Opaque`s to avoid infinite recursion. . if self.visited_opaque_tys.insert(def_id) { . // The intent is to treat `impl Trait1 + Trait2` identically to . // `dyn Trait1 + Trait2`. Therefore we ignore def-id of the opaque type itself . // (it either has no visibility, or its visibility is insignificant, like -- line 241 ---------------------------------------- -- line 270 ---------------------------------------- . ty::Bound(..) | ty::Placeholder(..) | ty::Infer(..) => { . bug!("unexpected type: {:?}", ty) . } . } . . if self.def_id_visitor.shallow() { . ControlFlow::CONTINUE . } else { 632,934 ( 0.01%) ty.super_visit_with(self) . } 2,046,318 ( 0.04%) } . . fn visit_const(&mut self, c: &'tcx Const<'tcx>) -> ControlFlow { 6,348 ( 0.00%) self.visit_ty(c.ty)?; 1,122 ( 0.00%) let tcx = self.def_id_visitor.tcx(); 7,406 ( 0.00%) if let Ok(Some(ct)) = AbstractConst::from_const(tcx, c) { . self.visit_abstract_const_expr(tcx, ct)?; . } . ControlFlow::CONTINUE . } . } . . fn min(vis1: ty::Visibility, vis2: ty::Visibility, tcx: TyCtxt<'_>) -> ty::Visibility { 2,079 ( 0.00%) if vis1.is_at_least(vis2, tcx) { vis2 } else { vis1 } . } . . //////////////////////////////////////////////////////////////////////////////// . /// Visitor used to determine if pub(restricted) is used anywhere in the crate. . /// . /// This is done so that `private_in_public` warnings can be turned into hard errors . /// in crates that have been updated to use pub(restricted). . //////////////////////////////////////////////////////////////////////////////// -- line 301 ---------------------------------------- -- line 303 ---------------------------------------- . tcx: TyCtxt<'tcx>, . has_pub_restricted: bool, . } . . impl<'tcx> Visitor<'tcx> for PubRestrictedVisitor<'tcx> { . type NestedFilter = nested_filter::All; . . fn nested_visit_map(&mut self) -> Self::Map { 2,953 ( 0.00%) self.tcx.hir() . } . fn visit_vis(&mut self, vis: &'tcx hir::Visibility<'tcx>) { 9,365 ( 0.00%) self.has_pub_restricted = self.has_pub_restricted || vis.node.is_pub_restricted(); . } . } . . //////////////////////////////////////////////////////////////////////////////// . /// Visitor used to determine impl visibility and reachability. . //////////////////////////////////////////////////////////////////////////////// . . struct FindMin<'a, 'tcx, VL: VisibilityLike> { -- line 322 ---------------------------------------- -- line 336 ---------------------------------------- . true . } . fn visit_def_id( . &mut self, . def_id: DefId, . _kind: &str, . _descr: &dyn fmt::Display, . ) -> ControlFlow { 26,296 ( 0.00%) self.min = VL::new_min(self, def_id); . ControlFlow::CONTINUE . } . } . . trait VisibilityLike: Sized { . const MAX: Self; . const SHALLOW: bool = false; . fn new_min(find: &FindMin<'_, '_, Self>, def_id: DefId) -> Self; . . // Returns an over-approximation (`skip_assoc_tys` = true) of visibility due to . // associated types for which we can't determine visibility precisely. 17,304 ( 0.00%) fn of_impl(def_id: LocalDefId, tcx: TyCtxt<'_>, access_levels: &AccessLevels) -> Self { 8,034 ( 0.00%) let mut find = FindMin { tcx, access_levels, min: Self::MAX }; 2,472 ( 0.00%) find.visit(tcx.type_of(def_id)); 7,416 ( 0.00%) if let Some(trait_ref) = tcx.impl_trait_ref(def_id) { 610 ( 0.00%) find.visit_trait(trait_ref); . } 1,284 ( 0.00%) find.min 19,776 ( 0.00%) } . } . impl VisibilityLike for ty::Visibility { . const MAX: Self = ty::Visibility::Public; 17,745 ( 0.00%) fn new_min(find: &FindMin<'_, '_, Self>, def_id: DefId) -> Self { 7,605 ( 0.00%) min(find.tcx.visibility(def_id), find.min, find.tcx) 25,350 ( 0.00%) } . } . impl VisibilityLike for Option { . const MAX: Self = Some(AccessLevel::Public); . // Type inference is very smart sometimes. . // It can make an impl reachable even some components of its type or trait are unreachable. . // E.g. methods of `impl ReachableTrait for ReachableTy { ... }` . // can be usable from other crates (#57264). So we skip substs when calculating reachability . // and consider an impl reachable if its "shallow" type and trait are reachable. . // . // The assumption we make here is that type-inference won't let you use an impl without knowing . // both "shallow" version of its self type and "shallow" version of its trait if it exists . // (which require reaching the `DefId`s in them). . const SHALLOW: bool = true; 10,602 ( 0.00%) fn new_min(find: &FindMin<'_, '_, Self>, def_id: DefId) -> Self { . cmp::min( 10,602 ( 0.00%) if let Some(def_id) = def_id.as_local() { 4,806 ( 0.00%) find.access_levels.map.get(&def_id).copied() . } else { . Self::MAX . }, 7,597 ( 0.00%) find.min, . ) 14,136 ( 0.00%) } . } . . //////////////////////////////////////////////////////////////////////////////// . /// The embargo visitor, used to determine the exports of the AST. . //////////////////////////////////////////////////////////////////////////////// . . struct EmbargoVisitor<'tcx> { . tcx: TyCtxt<'tcx>, -- line 400 ---------------------------------------- -- line 422 ---------------------------------------- . . struct ReachEverythingInTheInterfaceVisitor<'a, 'tcx> { . access_level: Option, . item_def_id: LocalDefId, . ev: &'a mut EmbargoVisitor<'tcx>, . } . . impl<'tcx> EmbargoVisitor<'tcx> { 37,436 ( 0.00%) fn get(&self, def_id: LocalDefId) -> Option { . self.access_levels.map.get(&def_id).copied() 37,436 ( 0.00%) } . . fn update_with_hir_id( . &mut self, . hir_id: hir::HirId, . level: Option, . ) -> Option { 2,388 ( 0.00%) let def_id = self.tcx.hir().local_def_id(hir_id); . self.update(def_id, level) . } . . /// Updates node level and returns the updated level. . fn update(&mut self, def_id: LocalDefId, level: Option) -> Option { 45,090 ( 0.00%) let old_level = self.get(def_id); . // Accessibility levels can only grow. . if level > old_level { . self.access_levels.map.insert(def_id, level.unwrap()); 1,118 ( 0.00%) self.changed = true; . level . } else { . old_level . } . } . . fn reach( . &mut self, -- line 457 ---------------------------------------- -- line 458 ---------------------------------------- . def_id: LocalDefId, . access_level: Option, . ) -> ReachEverythingInTheInterfaceVisitor<'_, 'tcx> { . ReachEverythingInTheInterfaceVisitor { . access_level: cmp::min(access_level, Some(AccessLevel::Reachable)), . item_def_id: def_id, . ev: self, . } 12,485 ( 0.00%) } . . // We have to make sure that the items that macros might reference . // are reachable, since they might be exported transitively. . fn update_reachability_from_macro(&mut self, local_def_id: LocalDefId, md: &MacroDef) { . // Non-opaque macros cannot make other items more accessible than they already are. . 93 ( 0.00%) let hir_id = self.tcx.hir().local_def_id_to_hir_id(local_def_id); 279 ( 0.00%) let attrs = self.tcx.hir().attrs(hir_id); 651 ( 0.00%) if attr::find_transparency(attrs, md.macro_rules).0 != Transparency::Opaque { . return; . } . . let item_def_id = local_def_id.to_def_id(); . let macro_module_def_id = . ty::DefIdTree::parent(self.tcx, item_def_id).unwrap().expect_local(); . if self.tcx.hir().opt_def_kind(macro_module_def_id) != Some(DefKind::Mod) { . // The macro's parent doesn't correspond to a `mod`, return early (#63164, #65252). -- line 483 ---------------------------------------- -- line 630 ---------------------------------------- . } . . impl<'tcx> Visitor<'tcx> for EmbargoVisitor<'tcx> { . type NestedFilter = nested_filter::All; . . /// We want to visit items in the context of their containing . /// module and so forth, so supply a crate for doing a deep walk. . fn nested_visit_map(&mut self) -> Self::Map { 8,859 ( 0.00%) self.tcx.hir() . } . 30,942 ( 0.00%) fn visit_item(&mut self, item: &'tcx hir::Item<'tcx>) { 6,876 ( 0.00%) let item_level = match item.kind { . hir::ItemKind::Impl { .. } => { . let impl_level = 11,124 ( 0.00%) Option::::of_impl(item.def_id, self.tcx, &self.access_levels); 1,854 ( 0.00%) self.update(item.def_id, impl_level) . } 6,336 ( 0.00%) _ => self.get(item.def_id), . }; . . // Update levels of nested things. 17,711 ( 0.00%) match item.kind { . hir::ItemKind::Enum(ref def, _) => { 24 ( 0.00%) for variant in def.variants { 216 ( 0.00%) let variant_level = self.update_with_hir_id(variant.id, item_level); 288 ( 0.00%) if let Some(ctor_hir_id) = variant.data.ctor_hir_id() { . self.update_with_hir_id(ctor_hir_id, item_level); . } 144 ( 0.00%) for field in variant.data.fields() { 126 ( 0.00%) self.update_with_hir_id(field.hir_id, variant_level); . } . } . } . hir::ItemKind::Impl(ref impl_) => { 5,562 ( 0.00%) for impl_item_ref in impl_.items { 10,752 ( 0.00%) if impl_.of_trait.is_some() 84 ( 0.00%) || self.tcx.visibility(impl_item_ref.id.def_id) == ty::Visibility::Public . { 5,016 ( 0.00%) self.update(impl_item_ref.id.def_id, item_level); . } . } . } 90 ( 0.00%) hir::ItemKind::Trait(.., trait_item_refs) => { . for trait_item_ref in trait_item_refs { 78 ( 0.00%) self.update(trait_item_ref.id.def_id, item_level); . } . } . hir::ItemKind::Struct(ref def, _) | hir::ItemKind::Union(ref def, _) => { 1,344 ( 0.00%) if let Some(ctor_hir_id) = def.ctor_hir_id() { . self.update_with_hir_id(ctor_hir_id, item_level); . } 672 ( 0.00%) for field in def.fields() { 1,332 ( 0.00%) if field.vis.node.is_pub() { 24 ( 0.00%) self.update_with_hir_id(field.hir_id, item_level); . } . } . } . hir::ItemKind::Macro(ref macro_def) => { 186 ( 0.00%) self.update_reachability_from_macro(item.def_id, macro_def); . } . hir::ItemKind::ForeignMod { items, .. } => { . for foreign_item in items { . if self.tcx.visibility(foreign_item.id.def_id) == ty::Visibility::Public { . self.update(foreign_item.id.def_id, item_level); . } . } . } -- line 697 ---------------------------------------- -- line 704 ---------------------------------------- . | hir::ItemKind::TyAlias(..) . | hir::ItemKind::Mod(..) . | hir::ItemKind::TraitAlias(..) . | hir::ItemKind::Fn(..) . | hir::ItemKind::ExternCrate(..) => {} . } . . // Mark all items in interfaces of reachable items as reachable. 17,190 ( 0.00%) match item.kind { . // The interface is empty. . hir::ItemKind::Macro(..) | hir::ItemKind::ExternCrate(..) => {} . // All nested items are checked by `visit_item`. . hir::ItemKind::Mod(..) => {} . // Handled in the access level of in rustc_resolve . hir::ItemKind::Use(..) => {} . // The interface is empty. . hir::ItemKind::GlobalAsm(..) => {} -- line 720 ---------------------------------------- -- line 732 ---------------------------------------- . self.reach(item.def_id, exist_level).generics().predicates().ty(); . } . } . // Visit everything. . hir::ItemKind::Const(..) . | hir::ItemKind::Static(..) . | hir::ItemKind::Fn(..) . | hir::ItemKind::TyAlias(..) => { 141 ( 0.00%) if item_level.is_some() { 180 ( 0.00%) self.reach(item.def_id, item_level).generics().predicates().ty(); . } . } 50 ( 0.00%) hir::ItemKind::Trait(.., trait_item_refs) => { 30 ( 0.00%) if item_level.is_some() { 200 ( 0.00%) self.reach(item.def_id, item_level).generics().predicates(); . . for trait_item_ref in trait_item_refs { 58 ( 0.00%) let mut reach = self.reach(trait_item_ref.id.def_id, item_level); 116 ( 0.00%) reach.generics().predicates(); . 29 ( 0.00%) if trait_item_ref.kind == AssocItemKind::Type . && !trait_item_ref.defaultness.has_value() . { . // No type to visit. . } else { 58 ( 0.00%) reach.ty(); . } . } . } . } . hir::ItemKind::TraitAlias(..) => { . if item_level.is_some() { . self.reach(item.def_id, item_level).generics().predicates(); . } . } . // Visit everything except for private impl items. . hir::ItemKind::Impl(ref impl_) => { 1,854 ( 0.00%) if item_level.is_some() { 15,530 ( 0.00%) self.reach(item.def_id, item_level).generics().predicates().ty().trait_ref(); . 1,553 ( 0.00%) for impl_item_ref in impl_.items { 5,178 ( 0.00%) let impl_item_level = self.get(impl_item_ref.id.def_id); 9,820 ( 0.00%) if impl_item_level.is_some() { 17,260 ( 0.00%) self.reach(impl_item_ref.id.def_id, impl_item_level) . .generics() . .predicates() . .ty(); . } . } . } . } . . // Visit everything, but enum variants have their own levels. . hir::ItemKind::Enum(ref def, _) => { 24 ( 0.00%) if item_level.is_some() { . self.reach(item.def_id, item_level).generics().predicates(); . } 24 ( 0.00%) for variant in def.variants { 648 ( 0.00%) let variant_level = self.get(self.tcx.hir().local_def_id(variant.id)); 72 ( 0.00%) if variant_level.is_some() { . for field in variant.data.fields() { . self.reach(self.tcx.hir().local_def_id(field.hir_id), variant_level) . .ty(); . } . // Corner case: if the variant is reachable, but its . // enum is not, make the enum reachable as well. . self.update(item.def_id, variant_level); . } -- line 799 ---------------------------------------- -- line 808 ---------------------------------------- . .generics() . .predicates() . .ty(); . } . } . } . // Visit everything except for private fields. . hir::ItemKind::Struct(ref struct_def, _) | hir::ItemKind::Union(ref struct_def, _) => { 336 ( 0.00%) if item_level.is_some() { 1,056 ( 0.00%) self.reach(item.def_id, item_level).generics().predicates(); 264 ( 0.00%) for field in struct_def.fields() { 693 ( 0.00%) let def_id = self.tcx.hir().local_def_id(field.hir_id); 297 ( 0.00%) let field_level = self.get(def_id); 99 ( 0.00%) if field_level.is_some() { 30 ( 0.00%) self.reach(def_id, field_level).ty(); . } . } . } . } . } . . let orig_level = mem::replace(&mut self.prev_level, item_level); 10,314 ( 0.00%) intravisit::walk_item(self, item); 3,438 ( 0.00%) self.prev_level = orig_level; 27,504 ( 0.00%) } . . fn visit_block(&mut self, b: &'tcx hir::Block<'tcx>) { . // Blocks can have public items, for example impls, but they always . // start as completely private regardless of publicity of a function, . // constant, type, field, etc., in which this block resides. . let orig_level = mem::replace(&mut self.prev_level, None); . intravisit::walk_block(self, b); . self.prev_level = orig_level; . } . } . . impl ReachEverythingInTheInterfaceVisitor<'_, '_> { 24,885 ( 0.00%) fn generics(&mut self) -> &mut Self { 14,220 ( 0.00%) for param in &self.ev.tcx.generics_of(self.item_def_id).params { 40,240 ( 0.00%) match param.kind { . GenericParamDefKind::Lifetime => {} 5,060 ( 0.00%) GenericParamDefKind::Type { has_default, .. } => { 5,060 ( 0.00%) if has_default { 432 ( 0.00%) self.visit(self.ev.tcx.type_of(param.def_id)); . } . } 144 ( 0.00%) GenericParamDefKind::Const { has_default, .. } => { 192 ( 0.00%) self.visit(self.ev.tcx.type_of(param.def_id)); 48 ( 0.00%) if has_default { . self.visit(self.ev.tcx.const_param_default(param.def_id)); . } . } . } . } . self 31,995 ( 0.00%) } . 17,775 ( 0.00%) fn predicates(&mut self) -> &mut Self { 10,665 ( 0.00%) self.visit_predicates(self.ev.tcx.predicates_of(self.item_def_id)); . self 21,330 ( 0.00%) } . 17,020 ( 0.00%) fn ty(&mut self) -> &mut Self { 10,212 ( 0.00%) self.visit(self.ev.tcx.type_of(self.item_def_id)); . self 20,424 ( 0.00%) } . . fn trait_ref(&mut self) -> &mut Self { 9,318 ( 0.00%) if let Some(trait_ref) = self.ev.tcx.impl_trait_ref(self.item_def_id) { . self.visit_trait(trait_ref); . } . self . } . } . . impl<'tcx> DefIdVisitor<'tcx> for ReachEverythingInTheInterfaceVisitor<'_, 'tcx> { . fn tcx(&self) -> TyCtxt<'tcx> { 125,966 ( 0.00%) self.ev.tcx . } 125,430 ( 0.00%) fn visit_def_id( . &mut self, . def_id: DefId, . _kind: &str, . _descr: &dyn fmt::Display, . ) -> ControlFlow { 75,258 ( 0.00%) if let Some(def_id) = def_id.as_local() { 42,560 ( 0.00%) if let (ty::Visibility::Public, _) | (_, Some(AccessLevel::ReachableFromImplTrait)) = 10,659 ( 0.00%) (self.tcx().visibility(def_id.to_def_id()), self.access_level) . { . self.ev.update(def_id, self.access_level); . } . } . ControlFlow::CONTINUE 175,602 ( 0.00%) } . } . . ////////////////////////////////////////////////////////////////////////////////////// . /// Name privacy visitor, checks privacy and reports violations. . /// Most of name privacy checks are performed during the main resolution phase, . /// or later in type checking when field accesses and associated items are resolved. . /// This pass performs remaining checks for fields in struct expressions and patterns. . ////////////////////////////////////////////////////////////////////////////////////// -- line 909 ---------------------------------------- -- line 920 ---------------------------------------- . /// `Expr` or `Pat` nodes (they are guaranteed to be found only in bodies). . #[track_caller] . fn typeck_results(&self) -> &'tcx ty::TypeckResults<'tcx> { . self.maybe_typeck_results . .expect("`NamePrivacyVisitor::typeck_results` called outside of body") . } . . // Checks that a field in a struct constructor (expression or pattern) is accessible. 9,210 ( 0.00%) fn check_field( . &mut self, . use_ctxt: Span, // syntax context of the field name at the use site . span: Span, // span of the field pattern, e.g., `x: 0` . def: &'tcx ty::AdtDef, // definition of the struct or enum . field: &'tcx ty::FieldDef, . in_update_syntax: bool, . ) { 1,842 ( 0.00%) if def.is_enum() { . return; . } . . // definition of the field . let ident = Ident::new(kw::Empty, use_ctxt); 206 ( 0.00%) let hir_id = self.tcx.hir().local_def_id_to_hir_id(self.current_item); 721 ( 0.00%) let def_id = self.tcx.adjust_ident_and_get_scope(ident, def.did, hir_id).1; 103 ( 0.00%) if !field.vis.is_accessible_from(def_id, self.tcx) { . let label = if in_update_syntax { . format!("field `{}` is private", field.name) . } else { . "private field".to_string() . }; . . struct_span_err!( . self.tcx.sess, -- line 952 ---------------------------------------- -- line 955 ---------------------------------------- . "field `{}` of {} `{}` is private", . field.name, . def.variant_descr(), . self.tcx.def_path_str(def.did) . ) . .span_label(span, label) . .emit(); . } 7,368 ( 0.00%) } . } . . impl<'tcx> Visitor<'tcx> for NamePrivacyVisitor<'tcx> { . type NestedFilter = nested_filter::All; . . /// We want to visit items in the context of their containing . /// module and so forth, so supply a crate for doing a deep walk. . fn nested_visit_map(&mut self) -> Self::Map { 1,968 ( 0.00%) self.tcx.hir() . } . . fn visit_mod(&mut self, _m: &'tcx hir::Mod<'tcx>, _s: Span, _n: hir::HirId) { . // Don't visit nested modules, since we run a separate visitor walk . // for each module in `privacy_access_levels` . } . . fn visit_nested_body(&mut self, body: hir::BodyId) { . let old_maybe_typeck_results = 4,976 ( 0.00%) self.maybe_typeck_results.replace(self.tcx.typeck_body(body)); 5,700 ( 0.00%) let body = self.tcx.hir().body(body); . self.visit_body(body); 227 ( 0.00%) self.maybe_typeck_results = old_maybe_typeck_results; . } . . fn visit_item(&mut self, item: &'tcx hir::Item<'tcx>) { 1,146 ( 0.00%) let orig_current_item = mem::replace(&mut self.current_item, item.def_id); 3,403 ( 0.00%) intravisit::walk_item(self, item); 1,146 ( 0.00%) self.current_item = orig_current_item; . } . 123,219 ( 0.00%) fn visit_expr(&mut self, expr: &'tcx hir::Expr<'tcx>) { 27,382 ( 0.00%) if let hir::ExprKind::Struct(qpath, fields, ref base) = expr.kind { 462 ( 0.00%) let res = self.typeck_results().qpath_res(qpath, expr.hir_id); 231 ( 0.00%) let adt = self.typeck_results().expr_ty(expr).ty_adt_def().unwrap(); 693 ( 0.00%) let variant = adt.variant_of_res(res); 308 ( 0.00%) if let Some(base) = *base { . // If the expression uses FRU we need to make sure all the unmentioned fields . // are checked for privacy (RFC 736). Rather than computing the set of . // unmentioned fields, just check them all. . for (vf_index, variant_field) in variant.fields.iter().enumerate() { . let field = fields.iter().find(|f| { . self.tcx.field_index(f.hir_id, self.typeck_results()) == vf_index . }); . let (use_ctxt, span) = match field { . Some(field) => (field.ident.span, field.span), . None => (base.span, base.span), . }; . self.check_field(use_ctxt, span, adt, variant_field, true); . } . } else { . for field in fields { 97 ( 0.00%) let use_ctxt = field.ident.span; 775 ( 0.00%) let index = self.tcx.field_index(field.hir_id, self.typeck_results()); 1,067 ( 0.00%) self.check_field(use_ctxt, field.span, adt, &variant.fields[index], false); . } . } . } . 136,910 ( 0.00%) intravisit::walk_expr(self, expr); . } . 34,960 ( 0.00%) fn visit_pat(&mut self, pat: &'tcx hir::Pat<'tcx>) { 9,565 ( 0.00%) if let PatKind::Struct(ref qpath, fields, _) = pat.kind { 5,775 ( 0.00%) let res = self.typeck_results().qpath_res(qpath, pat.hir_id); 3,300 ( 0.00%) let adt = self.typeck_results().pat_ty(pat).ty_adt_def().unwrap(); 6,600 ( 0.00%) let variant = adt.variant_of_res(res); . for field in fields { 824 ( 0.00%) let use_ctxt = field.ident.span; 6,583 ( 0.00%) let index = self.tcx.field_index(field.hir_id, self.typeck_results()); 8,240 ( 0.00%) self.check_field(use_ctxt, field.span, adt, &variant.fields[index], false); . } . } . 39,330 ( 0.00%) intravisit::walk_pat(self, pat); . } . } . . //////////////////////////////////////////////////////////////////////////////////////////// . /// Type privacy visitor, checks types for privacy and reports violations. . /// Both explicitly written types and inferred types of expressions and patterns are checked. . /// Checks are performed on "semantic" types regardless of names and their hygiene. . //////////////////////////////////////////////////////////////////////////////////////////// -- line 1045 ---------------------------------------- -- line 1061 ---------------------------------------- . .expect("`TypePrivacyVisitor::typeck_results` called outside of body") . } . . fn item_is_accessible(&self, did: DefId) -> bool { . self.tcx.visibility(did).is_accessible_from(self.current_item.to_def_id(), self.tcx) . } . . // Take node-id of an expression or pattern and check its type for privacy. 134,036 ( 0.00%) fn check_expr_pat_type(&mut self, id: hir::HirId, span: Span) -> bool { 19,148 ( 0.00%) self.span = span; 19,148 ( 0.00%) let typeck_results = self.typeck_results(); . let result: ControlFlow<()> = try { 76,592 ( 0.00%) self.visit(typeck_results.node_type(id))?; 153,184 ( 0.00%) self.visit(typeck_results.node_substs(id))?; 172,332 ( 0.00%) if let Some(adjustments) = typeck_results.adjustments().get(id) { . adjustments.iter().try_for_each(|adjustment| self.visit(adjustment.target))?; . } . }; . result.is_break() 153,184 ( 0.00%) } . . fn check_def_id(&mut self, def_id: DefId, kind: &str, descr: &dyn fmt::Display) -> bool { 133,980 ( 0.00%) let is_error = !self.item_is_accessible(def_id); . if is_error { . self.tcx . .sess . .struct_span_err(self.span, &format!("{} `{}` is private", kind, descr)) . .span_label(self.span, &format!("private {}", kind)) . .emit(); . } . is_error -- line 1091 ---------------------------------------- -- line 1093 ---------------------------------------- . } . . impl<'tcx> Visitor<'tcx> for TypePrivacyVisitor<'tcx> { . type NestedFilter = nested_filter::All; . . /// We want to visit items in the context of their containing . /// module and so forth, so supply a crate for doing a deep walk. . fn nested_visit_map(&mut self) -> Self::Map { 1,968 ( 0.00%) self.tcx.hir() . } . . fn visit_mod(&mut self, _m: &'tcx hir::Mod<'tcx>, _s: Span, _n: hir::HirId) { . // Don't visit nested modules, since we run a separate visitor walk . // for each module in `privacy_access_levels` . } . 9,390 ( 0.00%) fn visit_nested_body(&mut self, body: hir::BodyId) { . let old_maybe_typeck_results = 2,817 ( 0.00%) self.maybe_typeck_results.replace(self.tcx.typeck_body(body)); 5,634 ( 0.00%) let body = self.tcx.hir().body(body); . self.visit_body(body); 939 ( 0.00%) self.maybe_typeck_results = old_maybe_typeck_results; 7,512 ( 0.00%) } . . fn visit_generic_arg(&mut self, generic_arg: &'tcx hir::GenericArg<'tcx>) { 32,931 ( 0.00%) match generic_arg { 22,100 ( 0.00%) hir::GenericArg::Type(t) => self.visit_ty(t), . hir::GenericArg::Infer(inf) => self.visit_infer(inf), . hir::GenericArg::Lifetime(_) | hir::GenericArg::Const(_) => {} . } . } . 98,462 ( 0.00%) fn visit_ty(&mut self, hir_ty: &'tcx hir::Ty<'tcx>) { 28,132 ( 0.00%) self.span = hir_ty.span; 42,198 ( 0.00%) if let Some(typeck_results) = self.maybe_typeck_results { . // Types in bodies. 8,340 ( 0.00%) if self.visit(typeck_results.node_type(hir_ty.hir_id)).is_break() { . return; . } . } else { . // Types in signatures. . // FIXME: This is very ineffective. Ideally each HIR type should be converted . // into a semantic type only once and the result should be cached somehow. 33,858 ( 0.00%) if self.visit(rustc_typeck::hir_ty_to_ty(self.tcx, hir_ty)).is_break() { . return; . } . } . 42,198 ( 0.00%) intravisit::walk_ty(self, hir_ty); 84,396 ( 0.00%) } . . fn visit_infer(&mut self, inf: &'tcx hir::InferArg) { . self.span = inf.span; . if let Some(typeck_results) = self.maybe_typeck_results { . if let Some(ty) = typeck_results.node_type_opt(inf.hir_id) { . if self.visit(ty).is_break() { . return; . } -- line 1150 ---------------------------------------- -- line 1152 ---------------------------------------- . // We don't do anything for const infers here. . } . } else { . bug!("visit_infer without typeck_results"); . } . intravisit::walk_inf(self, inf); . } . 19,688 ( 0.00%) fn visit_trait_ref(&mut self, trait_ref: &'tcx hir::TraitRef<'tcx>) { 7,383 ( 0.00%) self.span = trait_ref.path.span; 2,461 ( 0.00%) if self.maybe_typeck_results.is_none() { . // Avoid calling `hir_trait_to_predicates` in bodies, it will ICE. . // The traits' privacy in bodies is already checked as a part of trait object types. 2,461 ( 0.00%) let bounds = rustc_typeck::hir_trait_to_predicates( 2,461 ( 0.00%) self.tcx, . trait_ref, . // NOTE: This isn't really right, but the actual type doesn't matter here. It's . // just required by `ty::TraitRef`. 7,383 ( 0.00%) self.tcx.types.never, . ); . 22,149 ( 0.00%) for (trait_predicate, _, _) in bounds.trait_bounds { 17,227 ( 0.00%) if self.visit_trait(trait_predicate.skip_binder()).is_break() { . return; . } . } . 14,815 ( 0.00%) for (poly_predicate, _) in bounds.projection_bounds { 42 ( 0.00%) let pred = poly_predicate.skip_binder(); . let poly_pred_term = self.visit(pred.term); 28 ( 0.00%) if poly_pred_term.is_break() . || self.visit_projection_ty(pred.projection_ty).is_break() . { . return; . } . } . } . . intravisit::walk_trait_ref(self, trait_ref); 19,688 ( 0.00%) } . . // Check types of expressions 123,120 ( 0.00%) fn visit_expr(&mut self, expr: &'tcx hir::Expr<'tcx>) { 123,120 ( 0.00%) if self.check_expr_pat_type(expr.hir_id, expr.span) { . // Do not check nested expressions if the error already happened. . return; . } 89,272 ( 0.00%) match expr.kind { 706 ( 0.00%) hir::ExprKind::Assign(_, rhs, _) | hir::ExprKind::Match(rhs, ..) => { . // Do not report duplicate errors for `x = y` and `match x { ... }`. 4,879 ( 0.00%) if self.check_expr_pat_type(rhs.hir_id, rhs.span) { . return; . } . } 1,278 ( 0.00%) hir::ExprKind::MethodCall(segment, ..) => { . // Method calls have to be checked specially. 2,556 ( 0.00%) self.span = segment.ident.span; 7,668 ( 0.00%) if let Some(def_id) = self.typeck_results().type_dependent_def_id(expr.hir_id) { 3,834 ( 0.00%) if self.visit(self.tcx.type_of(def_id)).is_break() { . return; . } . } else { . self.tcx . .sess . .delay_span_bug(expr.span, "no type-dependent def for method call"); . } . } . _ => {} . } . 41,040 ( 0.00%) intravisit::walk_expr(self, expr); 109,440 ( 0.00%) } . . // Prohibit access to associated items with insufficient nominal visibility. . // . // Additionally, until better reachability analysis for macros 2.0 is available, . // we prohibit access to private statics from other crates, this allows to give . // more code internal visibility at link time. (Access to private functions . // is already prohibited by type privacy for function types.) 202,210 ( 0.00%) fn visit_qpath(&mut self, qpath: &'tcx hir::QPath<'tcx>, id: hir::HirId, span: Span) { 40,442 ( 0.00%) let def = match qpath { 50,970 ( 0.00%) hir::QPath::Resolved(_, path) => match path.res { 75,000 ( 0.00%) Res::Def(kind, def_id) => Some((kind, def_id)), . _ => None, . }, 3,231 ( 0.00%) hir::QPath::TypeRelative(..) | hir::QPath::LangItem(..) => self . .maybe_typeck_results 21,087 ( 0.00%) .and_then(|typeck_results| typeck_results.type_dependent_def(id)), . }; . let def = def.filter(|(kind, _)| { 29,630 ( 0.00%) matches!( . kind, . DefKind::AssocFn | DefKind::AssocConst | DefKind::AssocTy | DefKind::Static . ) . }); . if let Some((kind, def_id)) = def { . let is_local_static = 7,100 ( 0.00%) if let DefKind::Static = kind { def_id.is_local() } else { false }; 3,690 ( 0.00%) if !self.item_is_accessible(def_id) && !is_local_static { . let sess = self.tcx.sess; . let sm = sess.source_map(); . let name = match qpath { . hir::QPath::Resolved(..) | hir::QPath::LangItem(..) => { . sm.span_to_snippet(qpath.span()).ok() . } . hir::QPath::TypeRelative(_, segment) => Some(segment.ident.to_string()), . }; -- line 1258 ---------------------------------------- -- line 1263 ---------------------------------------- . }; . sess.struct_span_err(span, &msg) . .span_label(span, &format!("private {}", kind)) . .emit(); . return; . } . } . 222,431 ( 0.00%) intravisit::walk_qpath(self, qpath, id, span); . } . . // Check types of patterns. . fn visit_pat(&mut self, pattern: &'tcx hir::Pat<'tcx>) { 29,219 ( 0.00%) if self.check_expr_pat_type(pattern.hir_id, pattern.span) { . // Do not check nested patterns if the error already happened. . return; . } . 15,697 ( 0.00%) intravisit::walk_pat(self, pattern); . } . 2,025 ( 0.00%) fn visit_local(&mut self, local: &'tcx hir::Local<'tcx>) { 1,215 ( 0.00%) if let Some(init) = local.init { 2,807 ( 0.00%) if self.check_expr_pat_type(init.hir_id, init.span) { . // Do not report duplicate errors for `let x = y`. . return; . } . } . . intravisit::walk_local(self, local); 808 ( 0.00%) } . . // Check types in item interfaces. . fn visit_item(&mut self, item: &'tcx hir::Item<'tcx>) { 1,146 ( 0.00%) let orig_current_item = mem::replace(&mut self.current_item, item.def_id); . let old_maybe_typeck_results = self.maybe_typeck_results.take(); 3,403 ( 0.00%) intravisit::walk_item(self, item); 1,146 ( 0.00%) self.maybe_typeck_results = old_maybe_typeck_results; 1,498 ( 0.00%) self.current_item = orig_current_item; . } . } . . impl<'tcx> DefIdVisitor<'tcx> for TypePrivacyVisitor<'tcx> { . fn tcx(&self) -> TyCtxt<'tcx> { 399,140 ( 0.01%) self.tcx . } 1,004,850 ( 0.02%) fn visit_def_id( . &mut self, . def_id: DefId, . kind: &str, . descr: &dyn fmt::Display, . ) -> ControlFlow { . if self.check_def_id(def_id, kind, descr) { . ControlFlow::BREAK . } else { . ControlFlow::CONTINUE . } 602,910 ( 0.01%) } . } . . /////////////////////////////////////////////////////////////////////////////// . /// Obsolete visitors for checking for private items in public interfaces. . /// These visitors are supposed to be kept in frozen state and produce an . /// "old error node set". For backward compatibility the new visitor reports . /// warnings instead of hard errors when the erroneous node is not in this old set. . /////////////////////////////////////////////////////////////////////////////// -- line 1328 ---------------------------------------- -- line 1342 ---------------------------------------- . /// Whether we've recurred at all (i.e., if we're pointing at the . /// first type on which `visit_ty` was called). . at_outer_type: bool, . /// Whether that first type is a public path. . outer_type_is_public_path: bool, . } . . impl<'a, 'tcx> ObsoleteVisiblePrivateTypesVisitor<'a, 'tcx> { 3,369 ( 0.00%) fn path_is_private_type(&self, path: &hir::Path<'_>) -> bool { 10,512 ( 0.00%) let did = match path.res { . Res::PrimTy(..) | Res::SelfTy(..) | Res::Err => return false, 20,274 ( 0.00%) res => res.def_id(), . }; . . // A path can only be private if: . // it's in this crate... 3,379 ( 0.00%) if let Some(did) = did.as_local() { . // .. and it corresponds to a private type in the AST (this returns . // `None` for type parameters). 14,645 ( 0.00%) match self.tcx.hir().find(self.tcx.hir().local_def_id_to_hir_id(did)) { 2,252 ( 0.00%) Some(Node::Item(item)) => !item.vis.node.is_pub(), . Some(_) | None => false, . } . } else { . false . } 6,738 ( 0.00%) } . . fn trait_is_public(&self, trait_id: LocalDefId) -> bool { . // FIXME: this would preferably be using `exported_items`, but all . // traits are exported currently (see `EmbargoVisitor.exported_trait`). . self.access_levels.is_public(trait_id) . } . . fn check_generic_bound(&mut self, bound: &hir::GenericBound<'_>) { 656 ( 0.00%) if let hir::GenericBound::Trait(ref trait_ref, _) = *bound { 220 ( 0.00%) if self.path_is_private_type(trait_ref.trait_ref.path) { . self.old_error_set.insert(trait_ref.trait_ref.hir_ref_id); . } . } . } . . fn item_is_public(&self, def_id: LocalDefId, vis: &hir::Visibility<'_>) -> bool { 661 ( 0.00%) self.access_levels.is_reachable(def_id) || vis.node.is_pub() . } . } . . impl<'a, 'b, 'tcx, 'v> Visitor<'v> for ObsoleteCheckTypeForPrivatenessVisitor<'a, 'b, 'tcx> { . fn visit_generic_arg(&mut self, generic_arg: &'v hir::GenericArg<'v>) { 3,212 ( 0.00%) match generic_arg { . hir::GenericArg::Type(t) => self.visit_ty(t), . hir::GenericArg::Infer(inf) => self.visit_ty(&inf.to_ty()), . hir::GenericArg::Lifetime(_) | hir::GenericArg::Const(_) => {} . } . } . . fn visit_ty(&mut self, ty: &hir::Ty<'_>) { 7,174 ( 0.00%) if let hir::TyKind::Path(hir::QPath::Resolved(_, path)) = ty.kind { 5,656 ( 0.00%) if self.inner.path_is_private_type(path) { . self.contains_private = true; . // Found what we're looking for, so let's stop working. . return; . } . } . if let hir::TyKind::Path(_) = ty.kind { 1,802 ( 0.00%) if self.at_outer_type { 482 ( 0.00%) self.outer_type_is_public_path = true; . } . } 1,949 ( 0.00%) self.at_outer_type = false; 3,162 ( 0.00%) intravisit::walk_ty(self, ty) 2,072 ( 0.00%) } . . // Don't want to recurse into `[, .. expr]`. . fn visit_expr(&mut self, _: &hir::Expr<'_>) {} . } . . impl<'a, 'tcx> Visitor<'tcx> for ObsoleteVisiblePrivateTypesVisitor<'a, 'tcx> { . type NestedFilter = nested_filter::All; . . /// We want to visit items in the context of their containing . /// module and so forth, so supply a crate for doing a deep walk. . fn nested_visit_map(&mut self) -> Self::Map { 1,025 ( 0.00%) self.tcx.hir() . } . 8,730 ( 0.00%) fn visit_item(&mut self, item: &'tcx hir::Item<'tcx>) { 3,880 ( 0.00%) match item.kind { . // Contents of a private mod can be re-exported, so we need . // to check internals. . hir::ItemKind::Mod(_) => {} . . // An `extern {}` doesn't introduce a new privacy . // namespace (the contents have their own privacies). . hir::ItemKind::ForeignMod { .. } => {} . 20 ( 0.00%) hir::ItemKind::Trait(.., bounds, _) => { 50 ( 0.00%) if !self.trait_is_public(item.def_id) { . return; . } . . for bound in bounds.iter() { . self.check_generic_bound(bound) . } . } . -- line 1447 ---------------------------------------- -- line 1454 ---------------------------------------- . // `impl [... for] Private` is never visible. . let self_contains_private; . // `impl [... for] Public<...>`, but not `impl [... for] . // Vec` or `(Public,)`, etc. . let self_is_public_path; . . // Check the properties of the `Self` type: . { 2,196 ( 0.00%) let mut visitor = ObsoleteCheckTypeForPrivatenessVisitor { . inner: self, . contains_private: false, . at_outer_type: true, . outer_type_is_public_path: false, . }; 549 ( 0.00%) visitor.visit_ty(impl_.self_ty); . self_contains_private = visitor.contains_private; . self_is_public_path = visitor.outer_type_is_public_path; . } . . // Miscellaneous info about the impl: . . // `true` iff this is `impl Private for ...`. . let not_private_trait = impl_.of_trait.as_ref().map_or( . true, // no trait counts as public trait . |tr| { 1,623 ( 0.00%) if let Some(def_id) = tr.path.res.def_id().as_local() { 960 ( 0.00%) self.trait_is_public(def_id) . } else { . true // external traits must be public . } . }, . ); . . // `true` iff this is a trait impl or at least one method is public. . // . // `impl Public { $( fn ...() {} )* }` is not visible. . // . // This is required over just using the methods' privacy . // directly because we might have `impl> ...`, . // and we shouldn't warn about the generics if all the methods . // are private (because `T` won't be visible externally). . let trait_or_some_public_method = impl_.of_trait.is_some() 8 ( 0.00%) || impl_.items.iter().any(|impl_item_ref| { 48 ( 0.00%) let impl_item = self.tcx.hir().impl_item(impl_item_ref.id); 64 ( 0.00%) match impl_item.kind { . hir::ImplItemKind::Const(..) | hir::ImplItemKind::Fn(..) => { . self.access_levels.is_reachable(impl_item_ref.id.def_id) . } . hir::ImplItemKind::TyAlias(_) => false, . } . }); . 1,090 ( 0.00%) if !self_contains_private && not_private_trait && trait_or_some_public_method { . intravisit::walk_generics(self, &impl_.generics); . 1,016 ( 0.00%) match impl_.of_trait { . None => { 4 ( 0.00%) for impl_item_ref in impl_.items { . // This is where we choose whether to walk down . // further into the impl to check its items. We . // should only walk into public items so that we . // don't erroneously report errors for private . // types in private items. 36 ( 0.00%) let impl_item = self.tcx.hir().impl_item(impl_item_ref.id); 50 ( 0.00%) match impl_item.kind { . hir::ImplItemKind::Const(..) | hir::ImplItemKind::Fn(..) 12 ( 0.00%) if self 6 ( 0.00%) .item_is_public(impl_item.def_id, &impl_item.vis) => . { . intravisit::walk_impl_item(self, impl_item) . } . hir::ImplItemKind::TyAlias(..) => { . intravisit::walk_impl_item(self, impl_item) . } . _ => {} . } -- line 1529 ---------------------------------------- -- line 1538 ---------------------------------------- . // . // Those in 1. can only occur if the trait is in . // this crate and will've been warned about on the . // trait definition (there's no need to warn twice . // so we don't check the methods). . // . // Those in 2. are warned via walk_generics and this . // call here. 1,512 ( 0.00%) intravisit::walk_path(self, tr.path); . . // Those in 3. are warned with this call. 504 ( 0.00%) for impl_item_ref in impl_.items { 2,765 ( 0.00%) let impl_item = self.tcx.hir().impl_item(impl_item_ref.id); 4,178 ( 0.00%) if let hir::ImplItemKind::TyAlias(ty) = impl_item.kind { . self.visit_ty(ty); . } . } . } . } 123 ( 0.00%) } else if impl_.of_trait.is_none() && self_is_public_path { . // `impl Public { ... }`. Any public static . // methods will be visible as `Public::foo`. . let mut found_pub_static = false; . for impl_item_ref in impl_.items { . if self.access_levels.is_reachable(impl_item_ref.id.def_id) . || self.tcx.visibility(impl_item_ref.id.def_id) . == ty::Visibility::Public . { -- line 1565 ---------------------------------------- -- line 1584 ---------------------------------------- . return; . } . . // `type ... = ...;` can contain private types, because . // we're introducing a new name. . hir::ItemKind::TyAlias(..) => return, . . // Not at all public, so we don't care. 2,352 ( 0.00%) _ if !self.item_is_public(item.def_id, &item.vis) => { . return; . } . . _ => {} . } . . // We've carefully constructed it so that if we're here, then . // any `visit_ty`'s will be called on things that are in . // public signatures, i.e., things that we're interested in for . // this visitor. 1,310 ( 0.00%) intravisit::walk_item(self, item); 6,712 ( 0.00%) } . 704 ( 0.00%) fn visit_generics(&mut self, generics: &'tcx hir::Generics<'tcx>) { . for param in generics.params { 162 ( 0.00%) for bound in param.bounds { . self.check_generic_bound(bound); . } . } 88 ( 0.00%) for predicate in generics.where_clause.predicates { 279 ( 0.00%) match predicate { . hir::WherePredicate::BoundPredicate(bound_pred) => { 93 ( 0.00%) for bound in bound_pred.bounds.iter() { . self.check_generic_bound(bound) . } . } . hir::WherePredicate::RegionPredicate(_) => {} . hir::WherePredicate::EqPredicate(eq_pred) => { . self.visit_ty(eq_pred.rhs_ty); . } . } . } 704 ( 0.00%) } . . fn visit_foreign_item(&mut self, item: &'tcx hir::ForeignItem<'tcx>) { . if self.access_levels.is_reachable(item.def_id) { . intravisit::walk_foreign_item(self, item) . } . } . . fn visit_ty(&mut self, t: &'tcx hir::Ty<'tcx>) { 10,144 ( 0.00%) if let hir::TyKind::Path(hir::QPath::Resolved(_, path)) = t.kind { 7,680 ( 0.00%) if self.path_is_private_type(path) { 114 ( 0.00%) self.old_error_set.insert(t.hir_id); . } . } 8,893 ( 0.00%) intravisit::walk_ty(self, t) . } . . fn visit_variant( . &mut self, . v: &'tcx hir::Variant<'tcx>, . g: &'tcx hir::Generics<'tcx>, . item_id: hir::HirId, . ) { . if self.access_levels.is_reachable(self.tcx.hir().local_def_id(v.id)) { . self.in_variant = true; . intravisit::walk_variant(self, v, g, item_id); . self.in_variant = false; . } . } . 165 ( 0.00%) fn visit_field_def(&mut self, s: &'tcx hir::FieldDef<'tcx>) { 194 ( 0.00%) if s.vis.node.is_pub() || self.in_variant { . intravisit::walk_field_def(self, s); . } 124 ( 0.00%) } . . // We don't need to introspect into these at all: an . // expression/block context can't possibly contain exported things. . // (Making them no-ops stops us from traversing the whole AST without . // having to be super careful about our `walk_...` calls above.) . fn visit_block(&mut self, _: &'tcx hir::Block<'tcx>) {} . fn visit_expr(&mut self, _: &'tcx hir::Expr<'tcx>) {} . } -- line 1667 ---------------------------------------- -- line 1679 ---------------------------------------- . /// The visitor checks that each component type is at least this visible. . required_visibility: ty::Visibility, . has_pub_restricted: bool, . has_old_errors: bool, . in_assoc_ty: bool, . } . . impl SearchInterfaceForPrivateItemsVisitor<'_> { 7,294 ( 0.00%) fn generics(&mut self) -> &mut Self { 3,126 ( 0.00%) for param in &self.tcx.generics_of(self.item_def_id).params { 6,670 ( 0.00%) match param.kind { . GenericParamDefKind::Lifetime => {} 927 ( 0.00%) GenericParamDefKind::Type { has_default, .. } => { 927 ( 0.00%) if has_default { 108 ( 0.00%) self.visit(self.tcx.type_of(param.def_id)); . } . } . // FIXME(generic_const_exprs): May want to look inside const here . GenericParamDefKind::Const { .. } => { 24 ( 0.00%) self.visit(self.tcx.type_of(param.def_id)); . } . } . } . self 8,336 ( 0.00%) } . 5,210 ( 0.00%) fn predicates(&mut self) -> &mut Self { . // N.B., we use `explicit_predicates_of` and not `predicates_of` . // because we don't want to report privacy errors due to where . // clauses that the compiler inferred. We only want to . // consider the ones that the user wrote. This is important . // for the inferred outlives rules; see . // `src/test/ui/rfc-2093-infer-outlives/privacy.rs`. 2,084 ( 0.00%) self.visit_predicates(self.tcx.explicit_predicates_of(self.item_def_id)); . self 6,252 ( 0.00%) } . . fn bounds(&mut self) -> &mut Self { . self.visit_predicates(ty::GenericPredicates { . parent: None, . predicates: self.tcx.explicit_item_bounds(self.item_def_id), . }); . self . } . 5,180 ( 0.00%) fn ty(&mut self) -> &mut Self { 2,072 ( 0.00%) self.visit(self.tcx.type_of(self.item_def_id)); . self 5,180 ( 0.00%) } . . fn check_def_id(&mut self, def_id: DefId, kind: &str, descr: &dyn fmt::Display) -> bool { 31,804 ( 0.00%) if self.leaks_private_dep(def_id) { . self.tcx.struct_span_lint_hir( . lint::builtin::EXPORTED_PRIVATE_DEPENDENCIES, . self.tcx.hir().local_def_id_to_hir_id(self.item_def_id), . self.tcx.def_span(self.item_def_id.to_def_id()), . |lint| { . lint.build(&format!( . "{} `{}` from private dependency '{}' in public \ . interface", -- line 1738 ---------------------------------------- -- line 1740 ---------------------------------------- . descr, . self.tcx.crate_name(def_id.krate) . )) . .emit() . }, . ); . } . 13,005 ( 0.00%) let hir_id = match def_id.as_local() { 3,042 ( 0.00%) Some(def_id) => self.tcx.hir().local_def_id_to_hir_id(def_id), . None => return false, . }; . . let vis = self.tcx.visibility(def_id); 4,588 ( 0.00%) if !vis.is_at_least(self.required_visibility, self.tcx) { . let vis_descr = match vis { . ty::Visibility::Public => "public", . ty::Visibility::Invisible => "private", . ty::Visibility::Restricted(vis_def_id) => { . if vis_def_id == self.tcx.parent_module(hir_id).to_def_id() { . "private" . } else if vis_def_id.is_top_level_module() { . "crate-private" -- line 1762 ---------------------------------------- -- line 1792 ---------------------------------------- . false . } . . /// An item is 'leaked' from a private dependency if all . /// of the following are true: . /// 1. It's contained within a public type . /// 2. It comes from a private crate . fn leaks_private_dep(&self, item_id: DefId) -> bool { 20,763 ( 0.00%) let ret = self.required_visibility.is_public() && self.tcx.is_private_dep(item_id.krate); . . tracing::debug!("leaks_private_dep(item_id={:?})={}", item_id, ret); . ret . } . } . . impl<'tcx> DefIdVisitor<'tcx> for SearchInterfaceForPrivateItemsVisitor<'tcx> { . fn tcx(&self) -> TyCtxt<'tcx> { 19,461 ( 0.00%) self.tcx . } 110,736 ( 0.00%) fn visit_def_id( . &mut self, . def_id: DefId, . kind: &str, . descr: &dyn fmt::Display, . ) -> ControlFlow { . if self.check_def_id(def_id, kind, descr) { . ControlFlow::BREAK . } else { . ControlFlow::CONTINUE . } 62,289 ( 0.00%) } . } . . struct PrivateItemsInPublicInterfacesVisitor<'tcx> { . tcx: TyCtxt<'tcx>, . has_pub_restricted: bool, . old_error_set_ancestry: LocalDefIdSet, . } . . impl<'tcx> PrivateItemsInPublicInterfacesVisitor<'tcx> { . fn check( . &self, . def_id: LocalDefId, . required_visibility: ty::Visibility, . ) -> SearchInterfaceForPrivateItemsVisitor<'tcx> { 8,803 ( 0.00%) SearchInterfaceForPrivateItemsVisitor { 989 ( 0.00%) tcx: self.tcx, . item_def_id: def_id, . required_visibility, 1,306 ( 0.00%) has_pub_restricted: self.has_pub_restricted, . has_old_errors: self.old_error_set_ancestry.contains(&def_id), . in_assoc_ty: false, . } . } . 11,141 ( 0.00%) fn check_assoc_item( . &self, . def_id: LocalDefId, . assoc_item_kind: AssocItemKind, . defaultness: hir::Defaultness, . vis: ty::Visibility, . ) { . let mut check = self.check(def_id, vis); . 1,714 ( 0.00%) let (check_ty, is_assoc_ty) = match assoc_item_kind { . AssocItemKind::Const | AssocItemKind::Fn { .. } => (true, false), 176 ( 0.00%) AssocItemKind::Type => (defaultness.has_value(), true), . }; 1,714 ( 0.00%) check.in_assoc_ty = is_assoc_ty; 3,428 ( 0.00%) check.generics().predicates(); 176 ( 0.00%) if check_ty { 857 ( 0.00%) check.ty(); . } 6,856 ( 0.00%) } . } . . impl<'tcx> Visitor<'tcx> for PrivateItemsInPublicInterfacesVisitor<'tcx> { . type NestedFilter = nested_filter::OnlyBodies; . . fn nested_visit_map(&mut self) -> Self::Map { 875 ( 0.00%) self.tcx.hir() . } . 10,314 ( 0.00%) fn visit_item(&mut self, item: &'tcx hir::Item<'tcx>) { 1,146 ( 0.00%) let tcx = self.tcx; 1,146 ( 0.00%) let item_visibility = tcx.visibility(item.def_id); . 5,730 ( 0.00%) match item.kind { . // Crates are always public. . hir::ItemKind::ExternCrate(..) => {} . // All nested items are checked by `visit_item`. . hir::ItemKind::Mod(..) => {} . // Checked in resolve. . hir::ItemKind::Use(..) => {} . // No subitems. . hir::ItemKind::Macro(..) | hir::ItemKind::GlobalAsm(..) => {} . // Subitems of these items have inherited publicity. . hir::ItemKind::Const(..) . | hir::ItemKind::Static(..) . | hir::ItemKind::Fn(..) . | hir::ItemKind::TyAlias(..) => { 282 ( 0.00%) self.check(item.def_id, item_visibility).generics().predicates().ty(); . } . hir::ItemKind::OpaqueTy(..) => { . // `ty()` for opaque types is the underlying type, . // it's not a part of interface, so we skip it. . self.check(item.def_id, item_visibility).generics().bounds(); . } 40 ( 0.00%) hir::ItemKind::Trait(.., trait_item_refs) => { 40 ( 0.00%) self.check(item.def_id, item_visibility).generics().predicates(); . . for trait_item_ref in trait_item_refs { 78 ( 0.00%) self.check_assoc_item( 13 ( 0.00%) trait_item_ref.id.def_id, . trait_item_ref.kind, . trait_item_ref.defaultness, . item_visibility, . ); . 66 ( 0.00%) if let AssocItemKind::Type = trait_item_ref.kind { . self.check(trait_item_ref.id.def_id, item_visibility).bounds(); . } . } . } . hir::ItemKind::TraitAlias(..) => { . self.check(item.def_id, item_visibility).generics().predicates(); . } . hir::ItemKind::Enum(ref def, _) => { 32 ( 0.00%) self.check(item.def_id, item_visibility).generics().predicates(); . 8 ( 0.00%) for variant in def.variants { 24 ( 0.00%) for field in variant.data.fields() { 252 ( 0.00%) self.check(self.tcx.hir().local_def_id(field.hir_id), item_visibility).ty(); . } . } . } . // Subitems of foreign modules have their own publicity. . hir::ItemKind::ForeignMod { items, .. } => { . for foreign_item in items { . let vis = tcx.visibility(foreign_item.id.def_id); . self.check(foreign_item.id.def_id, vis).generics().predicates().ty(); . } . } . // Subitems of structs and unions have their own publicity. . hir::ItemKind::Struct(ref struct_def, _) | hir::ItemKind::Union(ref struct_def, _) => { 448 ( 0.00%) self.check(item.def_id, item_visibility).generics().predicates(); . 336 ( 0.00%) for field in struct_def.fields() { 666 ( 0.00%) let def_id = tcx.hir().local_def_id(field.hir_id); . let field_visibility = tcx.visibility(def_id); 333 ( 0.00%) self.check(def_id, min(item_visibility, field_visibility, tcx)).ty(); . } . } . // An inherent impl is public when its type is public . // Subitems of inherent impls have their own publicity. . // A trait impl is public when both its type and its trait are public . // Subitems of trait impls have inherited publicity. . hir::ItemKind::Impl(ref impl_) => { 2,472 ( 0.00%) let impl_vis = ty::Visibility::of_impl(item.def_id, tcx, &Default::default()); . // check that private components do not appear in the generics or predicates of inherent impls . // this check is intentionally NOT performed for impls of traits, per #90586 1,236 ( 0.00%) if impl_.of_trait.is_none() { 40 ( 0.00%) self.check(item.def_id, impl_vis).generics().predicates(); . } 618 ( 0.00%) for impl_item_ref in impl_.items { 1,080 ( 0.00%) let impl_item_vis = if impl_.of_trait.is_none() { 14 ( 0.00%) min(tcx.visibility(impl_item_ref.id.def_id), impl_vis, tcx) . } else { . impl_vis . }; 5,050 ( 0.00%) self.check_assoc_item( 844 ( 0.00%) impl_item_ref.id.def_id, . impl_item_ref.kind, . impl_item_ref.defaultness, . impl_item_vis, . ); . } . } . } 9,168 ( 0.00%) } . } . . pub fn provide(providers: &mut Providers) { 8 ( 0.00%) *providers = Providers { . visibility, . privacy_access_levels, . check_private_in_public, . check_mod_privacy, . ..*providers . }; 1 ( 0.00%) } . 21,168 ( 0.00%) fn visibility(tcx: TyCtxt<'_>, def_id: DefId) -> ty::Visibility { 2,352 ( 0.00%) let def_id = def_id.expect_local(); . match tcx.resolutions(()).visibilities.get(&def_id) { 2,540 ( 0.00%) Some(vis) => *vis, . None => { . let hir_id = tcx.hir().local_def_id_to_hir_id(def_id); 11,671 ( 0.00%) match tcx.hir().get(hir_id) { . // Unique types created for closures participate in type privacy checking. . // They have visibilities inherited from the module they are defined in. . Node::Expr(hir::Expr { kind: hir::ExprKind::Closure(..), .. }) => { 570 ( 0.00%) ty::Visibility::Restricted(tcx.parent_module(hir_id).to_def_id()) . } . // - AST lowering may clone `use` items and the clones don't . // get their entries in the resolver's visibility table. . // - AST lowering also creates opaque type items with inherited visibilies. . // Visibility on them should have no effect, but to avoid the visibility . // query failing on some items, we provide it for opaque types as well. . Node::Item(hir::Item { 157 ( 0.00%) vis, . kind: hir::ItemKind::Use(..) | hir::ItemKind::OpaqueTy(..), . .. 942 ( 0.00%) }) => ty::Visibility::from_hir(vis, hir_id, tcx), . // Visibilities of trait impl items are inherited from their traits . // and are not filled in resolve. . Node::ImplItem(impl_item) => { 10,790 ( 0.00%) match tcx.hir().get_by_def_id(tcx.hir().get_parent_item(hir_id)) { . Node::Item(hir::Item { . kind: hir::ItemKind::Impl(hir::Impl { of_trait: Some(tr), .. }), . .. 830 ( 0.00%) }) => tr.path.res.opt_def_id().map_or_else( . || { . tcx.sess.delay_span_bug(tr.path.span, "trait without a def-id"); . ty::Visibility::Public . }, . |def_id| tcx.visibility(def_id), . ), . _ => span_bug!(impl_item.span, "the parent is not a trait impl"), . } -- line 2021 ---------------------------------------- -- line 2023 ---------------------------------------- . _ => span_bug!( . tcx.def_span(def_id), . "visibility table unexpectedly missing a def-id: {:?}", . def_id, . ), . } . } . } 18,816 ( 0.00%) } . 280 ( 0.00%) fn check_mod_privacy(tcx: TyCtxt<'_>, module_def_id: LocalDefId) { . // Check privacy of names not checked in previous compilation stages. . let mut visitor = 140 ( 0.00%) NamePrivacyVisitor { tcx, maybe_typeck_results: None, current_item: module_def_id }; 315 ( 0.00%) let (module, span, hir_id) = tcx.hir().get_module(module_def_id); . . intravisit::walk_mod(&mut visitor, module, hir_id); . . // Check privacy of explicitly written types and traits as well as . // inferred types of expressions and patterns. . let mut visitor = 210 ( 0.00%) TypePrivacyVisitor { tcx, maybe_typeck_results: None, current_item: module_def_id, span }; . intravisit::walk_mod(&mut visitor, module, hir_id); 280 ( 0.00%) } . 7 ( 0.00%) fn privacy_access_levels(tcx: TyCtxt<'_>, (): ()) -> &AccessLevels { . // Build up a set of all exported items in the AST. This is a set of all . // items which are reachable from external crates based on visibility. 9 ( 0.00%) let mut visitor = EmbargoVisitor { . tcx, . access_levels: tcx.resolutions(()).access_levels.clone(), . macro_reachable: Default::default(), . prev_level: Some(AccessLevel::Public), . changed: false, . }; . . loop { . tcx.hir().walk_toplevel_module(&mut visitor); 6 ( 0.00%) if visitor.changed { 6 ( 0.00%) visitor.changed = false; . } else { . break; . } . } . 1 ( 0.00%) tcx.arena.alloc(visitor.access_levels) 9 ( 0.00%) } . 8 ( 0.00%) fn check_private_in_public(tcx: TyCtxt<'_>, (): ()) { . let access_levels = tcx.privacy_access_levels(()); . 9 ( 0.00%) let mut visitor = ObsoleteVisiblePrivateTypesVisitor { . tcx, . access_levels, . in_variant: false, . old_error_set: Default::default(), . }; . tcx.hir().walk_toplevel_module(&mut visitor); . . let has_pub_restricted = { 5 ( 0.00%) let mut pub_restricted_visitor = PubRestrictedVisitor { tcx, has_pub_restricted: false }; . tcx.hir().walk_toplevel_module(&mut pub_restricted_visitor); 1 ( 0.00%) pub_restricted_visitor.has_pub_restricted . }; . . let mut old_error_set_ancestry = HirIdSet::default(); 9 ( 0.00%) for mut id in visitor.old_error_set.iter().copied() { . loop { 284 ( 0.00%) if !old_error_set_ancestry.insert(id) { . break; . } 525 ( 0.00%) let parent = tcx.hir().get_parent_node(id); 316 ( 0.00%) if parent == id { . break; . } . id = parent; . } . } . . // Check for private types and traits in public interfaces. 8 ( 0.00%) let mut visitor = PrivateItemsInPublicInterfacesVisitor { . tcx, . has_pub_restricted, . // Only definition IDs are ever searched in `old_error_set_ancestry`, . // so we can filter away all non-definition IDs at this point. . old_error_set_ancestry: old_error_set_ancestry . .into_iter() . .filter_map(|hir_id| tcx.hir().opt_local_def_id(hir_id)) . .collect(), . }; 6 ( 0.00%) tcx.hir().visit_all_item_likes(&mut DeepVisitor::new(&mut visitor)); 8 ( 0.00%) } 1,011,060 ( 0.02%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/fold.rs -------------------------------------------------------------------------------- Ir -- line 46 ---------------------------------------- . /// . /// To implement this conveniently, use the derive macro located in `rustc_macros`. . pub trait TypeFoldable<'tcx>: fmt::Debug + Clone { . /// Consumers may find this more convenient to use with infallible folders than . /// [`try_super_fold_with`][`TypeFoldable::try_super_fold_with`], to which the . /// provided default definition delegates. Implementors **should not** override . /// this provided default definition, to ensure that the two methods are coherent . /// (provide a definition of `try_super_fold_with` instead). 14,118,821 ( 0.24%) fn super_fold_with>(self, folder: &mut F) -> Self { 1,629,168 ( 0.03%) self.try_super_fold_with(folder).into_ok() 15,720,856 ( 0.27%) } . /// Consumers may find this more convenient to use with infallible folders than . /// [`try_fold_with`][`TypeFoldable::try_fold_with`], to which the provided . /// default definition delegates. Implementors **should not** override this . /// provided default definition, to ensure that the two methods are coherent . /// (provide a definition of `try_fold_with` instead). 915,951 ( 0.02%) fn fold_with>(self, folder: &mut F) -> Self { 329,699 ( 0.01%) self.try_fold_with(folder).into_ok() 842,080 ( 0.01%) } . . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result; . 43,714,412 ( 0.76%) fn try_fold_with>(self, folder: &mut F) -> Result { 16,561,586 ( 0.29%) self.try_super_fold_with(folder) 45,290,774 ( 0.78%) } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow; 1,605,131 ( 0.03%) fn visit_with>(&self, visitor: &mut V) -> ControlFlow { 1,157,102 ( 0.02%) self.super_visit_with(visitor) 711,930 ( 0.01%) } . . /// Returns `true` if `self` has any late-bound regions that are either . /// bound by `binder` or bound by some binder outside of `binder`. . /// If `binder` is `ty::INNERMOST`, this indicates whether . /// there are any late-bound regions that appear free. . fn has_vars_bound_at_or_above(&self, binder: ty::DebruijnIndex) -> bool { 1,437,725 ( 0.02%) self.visit_with(&mut HasEscapingVarsVisitor { outer_index: binder }).is_break() . } . . /// Returns `true` if this `self` has any regions that escape `binder` (and . /// hence are not bound by it). . fn has_vars_bound_above(&self, binder: ty::DebruijnIndex) -> bool { 285 ( 0.00%) self.has_vars_bound_at_or_above(binder.shifted_in(1)) . } . 2,295,688 ( 0.04%) fn has_escaping_bound_vars(&self) -> bool { 390,921 ( 0.01%) self.has_vars_bound_at_or_above(ty::INNERMOST) 2,304,572 ( 0.04%) } . 266,544 ( 0.00%) #[instrument(level = "trace")] . fn has_type_flags(&self, flags: TypeFlags) -> bool { 187,862 ( 0.00%) self.visit_with(&mut HasTypeFlagsVisitor { flags }).break_value() == Some(FoundFlags) . } . fn has_projections(&self) -> bool { 15,696 ( 0.00%) self.has_type_flags(TypeFlags::HAS_PROJECTION) . } . fn has_opaque_types(&self) -> bool { . self.has_type_flags(TypeFlags::HAS_TY_OPAQUE) . } 53,600 ( 0.00%) fn references_error(&self) -> bool { . self.has_type_flags(TypeFlags::HAS_ERROR) 53,600 ( 0.00%) } . fn has_param_types_or_consts(&self) -> bool { 12,909 ( 0.00%) self.has_type_flags(TypeFlags::HAS_TY_PARAM | TypeFlags::HAS_CT_PARAM) . } . fn has_infer_regions(&self) -> bool { . self.has_type_flags(TypeFlags::HAS_RE_INFER) . } . fn has_infer_types(&self) -> bool { . self.has_type_flags(TypeFlags::HAS_TY_INFER) . } . fn has_infer_types_or_consts(&self) -> bool { 468,431 ( 0.01%) self.has_type_flags(TypeFlags::HAS_TY_INFER | TypeFlags::HAS_CT_INFER) . } 151,883 ( 0.00%) fn needs_infer(&self) -> bool { 338,884 ( 0.01%) self.has_type_flags(TypeFlags::NEEDS_INFER) 152,690 ( 0.00%) } . fn has_placeholders(&self) -> bool { . self.has_type_flags( . TypeFlags::HAS_RE_PLACEHOLDER . | TypeFlags::HAS_TY_PLACEHOLDER . | TypeFlags::HAS_CT_PLACEHOLDER, . ) . } . fn needs_subst(&self) -> bool { -- line 133 ---------------------------------------- -- line 146 ---------------------------------------- . /// True if there are any un-erased free regions. . fn has_erasable_regions(&self) -> bool { . self.has_type_flags(TypeFlags::HAS_FREE_REGIONS) . } . . /// Indicates whether this value references only 'global' . /// generic parameters that are the same regardless of what fn we are . /// in. This is used for caching. 40 ( 0.00%) fn is_global(&self) -> bool { 157,124 ( 0.00%) !self.has_type_flags(TypeFlags::HAS_FREE_LOCAL_NAMES) 48 ( 0.00%) } . . /// True if there are any late-bound regions . fn has_late_bound_regions(&self) -> bool { . self.has_type_flags(TypeFlags::HAS_RE_LATE_BOUND) . } . . /// Indicates whether this value still has parameters/placeholders/inference variables . /// which could be replaced later, in a way that would change the results of `impl` -- line 164 ---------------------------------------- -- line 194 ---------------------------------------- . . fn tcx<'a>(&'a self) -> TyCtxt<'tcx>; . . fn fold_binder(&mut self, t: Binder<'tcx, T>) -> Binder<'tcx, T> . where . T: TypeFoldable<'tcx>, . Self: TypeFolder<'tcx, Error = !>, . { 9,352,784 ( 0.16%) t.super_fold_with(self) . } . . fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> . where . Self: TypeFolder<'tcx, Error = !>, . { 332,300 ( 0.01%) t.super_fold_with(self) . } . . fn fold_region(&mut self, r: ty::Region<'tcx>) -> ty::Region<'tcx> . where . Self: TypeFolder<'tcx, Error = !>, . { . r.super_fold_with(self) . } . . fn fold_const(&mut self, c: &'tcx ty::Const<'tcx>) -> &'tcx ty::Const<'tcx> . where . Self: TypeFolder<'tcx, Error = !>, . { 8,572 ( 0.00%) c.super_fold_with(self) . } . . fn fold_predicate(&mut self, p: ty::Predicate<'tcx>) -> ty::Predicate<'tcx> . where . Self: TypeFolder<'tcx, Error = !>, . { 48,382 ( 0.00%) p.super_fold_with(self) . } . . fn fold_mir_const(&mut self, c: mir::ConstantKind<'tcx>) -> mir::ConstantKind<'tcx> . where . Self: TypeFolder<'tcx, Error = !>, . { . bug!("most type folders should not be folding MIR datastructures: {:?}", c) . } -- line 238 ---------------------------------------- -- line 247 ---------------------------------------- . /// A blanket implementation of this trait (that defers to the relevant . /// method of [`TypeFolder`]) is provided for all infallible folders in . /// order to ensure the two APIs are coherent. . pub trait FallibleTypeFolder<'tcx>: TypeFolder<'tcx> { . fn try_fold_binder(&mut self, t: Binder<'tcx, T>) -> Result, Self::Error> . where . T: TypeFoldable<'tcx>, . { 158,891 ( 0.00%) t.try_super_fold_with(self) . } . . fn try_fold_ty(&mut self, t: Ty<'tcx>) -> Result, Self::Error> { . t.try_super_fold_with(self) . } . . fn try_fold_region(&mut self, r: ty::Region<'tcx>) -> Result, Self::Error> { . r.try_super_fold_with(self) -- line 263 ---------------------------------------- -- line 269 ---------------------------------------- . ) -> Result<&'tcx ty::Const<'tcx>, Self::Error> { . c.try_super_fold_with(self) . } . . fn try_fold_predicate( . &mut self, . p: ty::Predicate<'tcx>, . ) -> Result, Self::Error> { 42,575 ( 0.00%) p.try_super_fold_with(self) . } . . fn try_fold_mir_const( . &mut self, . c: mir::ConstantKind<'tcx>, . ) -> Result, Self::Error> { . bug!("most type folders should not be folding MIR datastructures: {:?}", c) . } -- line 285 ---------------------------------------- -- line 286 ---------------------------------------- . } . . // Blanket implementation of fallible trait for infallible folders . // delegates to infallible methods to prevent incoherence . impl<'tcx, F> FallibleTypeFolder<'tcx> for F . where . F: TypeFolder<'tcx, Error = !>, . { 623,428 ( 0.01%) fn try_fold_binder(&mut self, t: Binder<'tcx, T>) -> Result, Self::Error> . where . T: TypeFoldable<'tcx>, . { 1,152,925 ( 0.02%) Ok(self.fold_binder(t)) 906,064 ( 0.02%) } . 527,864 ( 0.01%) fn try_fold_ty(&mut self, t: Ty<'tcx>) -> Result, Self::Error> { 8,773,257 ( 0.15%) Ok(self.fold_ty(t)) 542,671 ( 0.01%) } . 134,880 ( 0.00%) fn try_fold_region(&mut self, r: ty::Region<'tcx>) -> Result, Self::Error> { 1,079,821 ( 0.02%) Ok(self.fold_region(r)) 134,880 ( 0.00%) } . 10,820 ( 0.00%) fn try_fold_const( . &mut self, . c: &'tcx ty::Const<'tcx>, . ) -> Result<&'tcx ty::Const<'tcx>, Self::Error> { 16,196 ( 0.00%) Ok(self.fold_const(c)) 7,790 ( 0.00%) } . . fn try_fold_predicate( . &mut self, . p: ty::Predicate<'tcx>, . ) -> Result, Self::Error> { . Ok(self.fold_predicate(p)) . } . -- line 322 ---------------------------------------- -- line 330 ---------------------------------------- . . pub trait TypeVisitor<'tcx>: Sized { . type BreakTy = !; . . fn visit_binder>( . &mut self, . t: &Binder<'tcx, T>, . ) -> ControlFlow { 1,143 ( 0.00%) t.super_visit_with(self) . } . . fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow { 360 ( 0.00%) t.super_visit_with(self) . } . . fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow { . r.super_visit_with(self) . } . 96 ( 0.00%) fn visit_const(&mut self, c: &'tcx ty::Const<'tcx>) -> ControlFlow { . c.super_visit_with(self) 84 ( 0.00%) } . . fn visit_unevaluated_const(&mut self, uv: ty::Unevaluated<'tcx>) -> ControlFlow { . uv.super_visit_with(self) . } . . fn visit_predicate(&mut self, p: ty::Predicate<'tcx>) -> ControlFlow { . p.super_visit_with(self) . } -- line 359 ---------------------------------------- -- line 380 ---------------------------------------- . G: FnMut(ty::Region<'tcx>) -> ty::Region<'tcx>, . H: FnMut(&'tcx ty::Const<'tcx>) -> &'tcx ty::Const<'tcx>, . { . fn tcx<'b>(&'b self) -> TyCtxt<'tcx> { . self.tcx . } . . fn fold_ty(&mut self, ty: Ty<'tcx>) -> Ty<'tcx> { 10,964 ( 0.00%) let t = ty.super_fold_with(self); . (self.ty_op)(t) . } . . fn fold_region(&mut self, r: ty::Region<'tcx>) -> ty::Region<'tcx> { . let r = r.super_fold_with(self); . (self.lt_op)(r) . } . . fn fold_const(&mut self, ct: &'tcx ty::Const<'tcx>) -> &'tcx ty::Const<'tcx> { 401 ( 0.00%) let ct = ct.super_fold_with(self); . (self.ct_op)(ct) . } . } . . /////////////////////////////////////////////////////////////////////////// . // Region folder . . impl<'tcx> TyCtxt<'tcx> { -- line 406 ---------------------------------------- -- line 415 ---------------------------------------- . ) -> T . where . T: TypeFoldable<'tcx>, . { . value.fold_with(&mut RegionFolder::new(self, skipped_regions, &mut f)) . } . . /// Invoke `callback` on every region appearing free in `value`. 5,696 ( 0.00%) pub fn for_each_free_region( . self, . value: &impl TypeFoldable<'tcx>, . mut callback: impl FnMut(ty::Region<'tcx>), . ) { . self.any_free_region_meets(value, |r| { 35,064 ( 0.00%) callback(r); . false . }); 4,979 ( 0.00%) } . . /// Returns `true` if `callback` returns true for every region appearing free in `value`. . pub fn all_free_regions_meet( . self, . value: &impl TypeFoldable<'tcx>, . mut callback: impl FnMut(ty::Region<'tcx>) -> bool, . ) -> bool { 8,326 ( 0.00%) !self.any_free_region_meets(value, |r| !callback(r)) . } . . /// Returns `true` if `callback` returns true for some region appearing free in `value`. . pub fn any_free_region_meets( . self, . value: &impl TypeFoldable<'tcx>, . callback: impl FnMut(ty::Region<'tcx>) -> bool, . ) -> bool { -- line 448 ---------------------------------------- -- line 473 ---------------------------------------- . F: FnMut(ty::Region<'tcx>) -> bool, . { . type BreakTy = (); . . fn visit_binder>( . &mut self, . t: &Binder<'tcx, T>, . ) -> ControlFlow { 2,740 ( 0.00%) self.outer_index.shift_in(1); 1,504 ( 0.00%) let result = t.as_ref().skip_binder().visit_with(self); 1,128 ( 0.00%) self.outer_index.shift_out(1); . result . } . 22,595 ( 0.00%) fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow { 53,065 ( 0.00%) match *r { 24 ( 0.00%) ty::ReLateBound(debruijn, _) if debruijn < self.outer_index => { . ControlFlow::CONTINUE . } . _ => { . if (self.callback)(r) { . ControlFlow::BREAK . } else { . ControlFlow::CONTINUE . } . } . } 31,633 ( 0.00%) } . . fn visit_ty(&mut self, ty: Ty<'tcx>) -> ControlFlow { . // We're only interested in types involving regions 52,493 ( 0.00%) if ty.flags().intersects(TypeFlags::HAS_FREE_REGIONS) { 55,710 ( 0.00%) ty.super_visit_with(self) . } else { . ControlFlow::CONTINUE . } . } . } . 74,357 ( 0.00%) value.visit_with(&mut RegionVisitor { outer_index: ty::INNERMOST, callback }).is_break() . } . } . . /// Folds over the substructure of a type, visiting its component . /// types and all regions that occur *free* within it. . /// . /// That is, `Ty` can contain function or method types that bind . /// regions at the call site (`ReLateBound`), and occurrences of -- line 520 ---------------------------------------- -- line 540 ---------------------------------------- . . impl<'a, 'tcx> RegionFolder<'a, 'tcx> { . #[inline] . pub fn new( . tcx: TyCtxt<'tcx>, . skipped_regions: &'a mut bool, . fold_region_fn: &'a mut dyn FnMut(ty::Region<'tcx>, ty::DebruijnIndex) -> ty::Region<'tcx>, . ) -> RegionFolder<'a, 'tcx> { 530,445 ( 0.01%) RegionFolder { tcx, skipped_regions, current_index: ty::INNERMOST, fold_region_fn } . } . } . . impl<'a, 'tcx> TypeFolder<'tcx> for RegionFolder<'a, 'tcx> { . fn tcx<'b>(&'b self) -> TyCtxt<'tcx> { 194,690 ( 0.00%) self.tcx 194,690 ( 0.00%) } . . fn fold_binder>( . &mut self, . t: ty::Binder<'tcx, T>, . ) -> ty::Binder<'tcx, T> { 5,883 ( 0.00%) self.current_index.shift_in(1); 4,901 ( 0.00%) let t = t.super_fold_with(self); 5,289 ( 0.00%) self.current_index.shift_out(1); . t . } . 1,346 ( 0.00%) #[instrument(skip(self), level = "debug")] . fn fold_region(&mut self, r: ty::Region<'tcx>) -> ty::Region<'tcx> { 91,482 ( 0.00%) match *r { 1,346 ( 0.00%) ty::ReLateBound(debruijn, _) if debruijn < self.current_index => { . debug!(?self.current_index, "skipped bound region"); 1,346 ( 0.00%) *self.skipped_regions = true; . r . } . _ => { . debug!(?self.current_index, "folding free region"); 270,408 ( 0.00%) (self.fold_region_fn)(r, self.current_index) . } . } . } . } . . /////////////////////////////////////////////////////////////////////////// . // Bound vars replacer . -- line 585 ---------------------------------------- -- line 592 ---------------------------------------- . current_index: ty::DebruijnIndex, . . fld_r: Option<&'a mut (dyn FnMut(ty::BoundRegion) -> ty::Region<'tcx> + 'a)>, . fld_t: Option<&'a mut (dyn FnMut(ty::BoundTy) -> Ty<'tcx> + 'a)>, . fld_c: Option<&'a mut (dyn FnMut(ty::BoundVar, Ty<'tcx>) -> &'tcx ty::Const<'tcx> + 'a)>, . } . . impl<'a, 'tcx> BoundVarReplacer<'a, 'tcx> { 273,934 ( 0.00%) fn new( . tcx: TyCtxt<'tcx>, . fld_r: Option<&'a mut (dyn FnMut(ty::BoundRegion) -> ty::Region<'tcx> + 'a)>, . fld_t: Option<&'a mut (dyn FnMut(ty::BoundTy) -> Ty<'tcx> + 'a)>, . fld_c: Option<&'a mut (dyn FnMut(ty::BoundVar, Ty<'tcx>) -> &'tcx ty::Const<'tcx> + 'a)>, . ) -> Self { 958,959 ( 0.02%) BoundVarReplacer { tcx, current_index: ty::INNERMOST, fld_r, fld_t, fld_c } 136,967 ( 0.00%) } . } . . impl<'a, 'tcx> TypeFolder<'tcx> for BoundVarReplacer<'a, 'tcx> { . fn tcx<'b>(&'b self) -> TyCtxt<'tcx> { 544,571 ( 0.01%) self.tcx 422,210 ( 0.01%) } . . fn fold_binder>( . &mut self, . t: ty::Binder<'tcx, T>, . ) -> ty::Binder<'tcx, T> { 1,028,211 ( 0.02%) self.current_index.shift_in(1); 2,832,400 ( 0.05%) let t = t.super_fold_with(self); 993,636 ( 0.02%) self.current_index.shift_out(1); . t . } . 2,227,110 ( 0.04%) fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> { 1,090,138 ( 0.02%) match *t.kind() { 16,745 ( 0.00%) ty::Bound(debruijn, bound_ty) if debruijn == self.current_index => { 3,350 ( 0.00%) if let Some(fld_t) = self.fld_t.as_mut() { . let ty = fld_t(bound_ty); 3,350 ( 0.00%) return ty::fold::shift_vars(self.tcx, &ty, self.current_index.as_u32()); . } . } 1,083,438 ( 0.02%) _ if t.has_vars_bound_at_or_above(self.current_index) => { 471,490 ( 0.01%) return t.super_fold_with(self); . } . _ => {} . } . t 2,433,156 ( 0.04%) } . 818,420 ( 0.01%) fn fold_region(&mut self, r: ty::Region<'tcx>) -> ty::Region<'tcx> { 504,646 ( 0.01%) match *r { 504,452 ( 0.01%) ty::ReLateBound(debruijn, br) if debruijn == self.current_index => { 252,190 ( 0.00%) if let Some(fld_r) = self.fld_r.as_mut() { . let region = fld_r(br); 504,494 ( 0.01%) return if let ty::ReLateBound(debruijn1, br) = *region { . // If the callback returns a late-bound region, . // that region should always use the INNERMOST . // debruijn index. Then we adjust it to the . // correct depth. 57 ( 0.00%) assert_eq!(debruijn1, ty::INNERMOST); 557 ( 0.00%) self.tcx.mk_region(ty::ReLateBound(debruijn, br)) . } else { . region . }; . } . } . _ => {} . } . r 818,420 ( 0.01%) } . . fn fold_const(&mut self, ct: &'tcx ty::Const<'tcx>) -> &'tcx ty::Const<'tcx> { 660 ( 0.00%) match *ct { . ty::Const { val: ty::ConstKind::Bound(debruijn, bound_const), ty } . if debruijn == self.current_index => . { . if let Some(fld_c) = self.fld_c.as_mut() { . let ct = fld_c(bound_const, ty); . return ty::fold::shift_vars(self.tcx, &ct, self.current_index.as_u32()); . } . } 220 ( 0.00%) _ if ct.has_vars_bound_at_or_above(self.current_index) => { . return ct.super_fold_with(self); . } . _ => {} . } . ct . } . } . -- line 681 ---------------------------------------- -- line 697 ---------------------------------------- . mut fld_r: F, . ) -> (T, BTreeMap>) . where . F: FnMut(ty::BoundRegion) -> ty::Region<'tcx>, . T: TypeFoldable<'tcx>, . { . let mut region_map = BTreeMap::new(); . let mut real_fld_r = 283,305 ( 0.00%) |br: ty::BoundRegion| *region_map.entry(br).or_insert_with(|| fld_r(br)); 17,174 ( 0.00%) let value = value.skip_binder(); 133,784 ( 0.00%) let value = if !value.has_escaping_bound_vars() { 231,642 ( 0.00%) value . } else { 19,624 ( 0.00%) let mut replacer = BoundVarReplacer::new(self, Some(&mut real_fld_r), None, None); 330 ( 0.00%) value.fold_with(&mut replacer) . }; 467,458 ( 0.01%) (value, region_map) . } . . /// Replaces all escaping bound vars. The `fld_r` closure replaces escaping . /// bound regions; the `fld_t` closure replaces escaping bound types and the `fld_c` . /// closure replaces escaping bound consts. 1,115,663 ( 0.02%) pub fn replace_escaping_bound_vars( . self, . value: T, . mut fld_r: F, . mut fld_t: G, . mut fld_c: H, . ) -> T . where . F: FnMut(ty::BoundRegion) -> ty::Region<'tcx>, . G: FnMut(ty::BoundTy) -> Ty<'tcx>, . H: FnMut(ty::BoundVar, Ty<'tcx>) -> &'tcx ty::Const<'tcx>, . T: TypeFoldable<'tcx>, . { 168,684 ( 0.00%) if !value.has_escaping_bound_vars() { 229,004 ( 0.00%) value . } else { . let mut replacer = 1,648,348 ( 0.03%) BoundVarReplacer::new(self, Some(&mut fld_r), Some(&mut fld_t), Some(&mut fld_c)); 93,759 ( 0.00%) value.fold_with(&mut replacer) . } 760,959 ( 0.01%) } . . /// Replaces all types or regions bound by the given `Binder`. The `fld_r` . /// closure replaces bound regions while the `fld_t` closure replaces bound . /// types. 7,890,997 ( 0.14%) pub fn replace_bound_vars( . self, . value: Binder<'tcx, T>, . mut fld_r: F, . fld_t: G, . fld_c: H, . ) -> (T, BTreeMap>) . where . F: FnMut(ty::BoundRegion) -> ty::Region<'tcx>, . G: FnMut(ty::BoundTy) -> Ty<'tcx>, . H: FnMut(ty::BoundVar, Ty<'tcx>) -> &'tcx ty::Const<'tcx>, . T: TypeFoldable<'tcx>, . { . let mut region_map = BTreeMap::new(); 101,572 ( 0.00%) let real_fld_r = |br: ty::BoundRegion| *region_map.entry(br).or_insert_with(|| fld_r(br)); 6,628,225 ( 0.11%) let value = self.replace_escaping_bound_vars(value.skip_binder(), real_fld_r, fld_t, fld_c); 5,057,710 ( 0.09%) (value, region_map) 6,111,657 ( 0.11%) } . . /// Replaces any late-bound regions bound in `value` with . /// free variants attached to `all_outlive_scope`. 31,229 ( 0.00%) pub fn liberate_late_bound_regions( . self, . all_outlive_scope: DefId, . value: ty::Binder<'tcx, T>, . ) -> T . where . T: TypeFoldable<'tcx>, . { . self.replace_late_bound_regions(value, |br| { 30,290 ( 0.00%) self.mk_region(ty::ReFree(ty::FreeRegion { 4,660 ( 0.00%) scope: all_outlive_scope, . bound_region: br.kind, . })) . }) . .0 17,034 ( 0.00%) } . . pub fn shift_bound_var_indices(self, bound_vars: usize, value: T) -> T . where . T: TypeFoldable<'tcx>, . { . self.replace_escaping_bound_vars( 149,415 ( 0.00%) value, 3 ( 0.00%) |r| { 21 ( 0.00%) self.mk_region(ty::ReLateBound( . ty::INNERMOST, . ty::BoundRegion { 12 ( 0.00%) var: ty::BoundVar::from_usize(r.var.as_usize() + bound_vars), . kind: r.kind, . }, . )) 6 ( 0.00%) }, . |t| { . self.mk_ty(ty::Bound( . ty::INNERMOST, . ty::BoundTy { . var: ty::BoundVar::from_usize(t.var.as_usize() + bound_vars), . kind: t.kind, . }, . )) -- line 804 ---------------------------------------- -- line 843 ---------------------------------------- . fn collect_late_bound_regions( . self, . value: &Binder<'tcx, T>, . just_constraint: bool, . ) -> FxHashSet . where . T: TypeFoldable<'tcx>, . { 3,286 ( 0.00%) let mut collector = LateBoundRegionsCollector::new(just_constraint); . let result = value.as_ref().skip_binder().visit_with(&mut collector); . assert!(result.is_continue()); // should never have stopped early 6,536 ( 0.00%) collector.regions . } . . /// Replaces any late-bound regions bound in `value` with `'erased`. Useful in codegen but also . /// method lookup and a few other places where precise region relationships are not required. . pub fn erase_late_bound_regions(self, value: Binder<'tcx, T>) -> T . where . T: TypeFoldable<'tcx>, . { 4,696 ( 0.00%) self.replace_late_bound_regions(value, |_| self.lifetimes.re_erased).0 . } . . /// Rewrite any late-bound regions so that they are anonymous. Region numbers are . /// assigned starting at 0 and increasing monotonically in the order traversed . /// by the fold operation. . /// . /// The chief purpose of this function is to canonicalize regions so that two . /// `FnSig`s or `TraitRef`s which are equivalent up to region naming will become . /// structurally identical. For example, `for<'a, 'b> fn(&'a isize, &'b isize)` and . /// `for<'a, 'b> fn(&'b isize, &'a isize)` will become identical after anonymization. 303,623 ( 0.01%) pub fn anonymize_late_bound_regions(self, sig: Binder<'tcx, T>) -> Binder<'tcx, T> . where . T: TypeFoldable<'tcx>, . { 212,705 ( 0.00%) let mut counter = 0; 14,988 ( 0.00%) let inner = self . .replace_late_bound_regions(sig, |_| { . let br = ty::BoundRegion { 84 ( 0.00%) var: ty::BoundVar::from_u32(counter), . kind: ty::BrAnon(counter), . }; 336 ( 0.00%) let r = self.mk_region(ty::ReLateBound(ty::INNERMOST, br)); 210 ( 0.00%) counter += 1; . r . }) . .0; 42,541 ( 0.00%) let bound_vars = self.mk_bound_variable_kinds( 127,623 ( 0.00%) (0..counter).map(|i| ty::BoundVariableKind::Region(ty::BrAnon(i))), . ); 231,822 ( 0.00%) Binder::bind_with_vars(inner, bound_vars) 261,302 ( 0.00%) } . } . . pub struct ValidateBoundVars<'tcx> { . bound_vars: &'tcx ty::List, . binder_index: ty::DebruijnIndex, . // We may encounter the same variable at different levels of binding, so . // this can't just be `Ty` . visited: SsoHashSet<(ty::DebruijnIndex, Ty<'tcx>)>, -- line 902 ---------------------------------------- -- line 1004 ---------------------------------------- . tcx: TyCtxt<'tcx>, . current_index: ty::DebruijnIndex, . amount: u32, . } . . impl<'tcx> Shifter<'tcx> { . pub fn new(tcx: TyCtxt<'tcx>, amount: u32) -> Self { . Shifter { tcx, current_index: ty::INNERMOST, amount } 6,712 ( 0.00%) } . } . . impl<'tcx> TypeFolder<'tcx> for Shifter<'tcx> { . fn tcx<'b>(&'b self) -> TyCtxt<'tcx> { 6 ( 0.00%) self.tcx . } . . fn fold_binder>( . &mut self, . t: ty::Binder<'tcx, T>, . ) -> ty::Binder<'tcx, T> { . self.current_index.shift_in(1); . let t = t.super_fold_with(self); . self.current_index.shift_out(1); . t . } . . fn fold_region(&mut self, r: ty::Region<'tcx>) -> ty::Region<'tcx> { 12 ( 0.00%) match *r { . ty::ReLateBound(debruijn, br) => { 24 ( 0.00%) if self.amount == 0 || debruijn < self.current_index { . r . } else { 6 ( 0.00%) let debruijn = debruijn.shifted_in(self.amount); . let shifted = ty::ReLateBound(debruijn, br); 60 ( 0.00%) self.tcx.mk_region(shifted) . } . } . _ => r, . } . } . . fn fold_ty(&mut self, ty: Ty<'tcx>) -> Ty<'tcx> { 6,724 ( 0.00%) match *ty.kind() { . ty::Bound(debruijn, bound_ty) => { . if self.amount == 0 || debruijn < self.current_index { . ty . } else { . let debruijn = debruijn.shifted_in(self.amount); . self.tcx.mk_ty(ty::Bound(debruijn, bound_ty)) . } . } . 10,101 ( 0.00%) _ => ty.super_fold_with(self), . } . } . . fn fold_const(&mut self, ct: &'tcx ty::Const<'tcx>) -> &'tcx ty::Const<'tcx> { . if let ty::Const { val: ty::ConstKind::Bound(debruijn, bound_ct), ty } = *ct { . if self.amount == 0 || debruijn < self.current_index { . ct . } else { -- line 1064 ---------------------------------------- -- line 1073 ---------------------------------------- . . pub fn shift_region<'tcx>( . tcx: TyCtxt<'tcx>, . region: ty::Region<'tcx>, . amount: u32, . ) -> ty::Region<'tcx> { . match region { . ty::ReLateBound(debruijn, br) if amount > 0 => { 338 ( 0.00%) tcx.mk_region(ty::ReLateBound(debruijn.shifted_in(amount), *br)) . } . _ => region, . } . } . . pub fn shift_vars<'tcx, T>(tcx: TyCtxt<'tcx>, value: T, amount: u32) -> T . where . T: TypeFoldable<'tcx>, . { . debug!("shift_vars(value={:?}, amount={})", value, amount); . 6,732 ( 0.00%) value.fold_with(&mut Shifter::new(tcx, amount)) . } . . #[derive(Debug, PartialEq, Eq, Copy, Clone)] . struct FoundEscapingVars; . . /// An "escaping var" is a bound var whose binder is not part of `t`. A bound var can be a . /// bound region or a bound type. . /// -- line 1101 ---------------------------------------- -- line 1128 ---------------------------------------- . . impl<'tcx> TypeVisitor<'tcx> for HasEscapingVarsVisitor { . type BreakTy = FoundEscapingVars; . . fn visit_binder>( . &mut self, . t: &Binder<'tcx, T>, . ) -> ControlFlow { 64,431 ( 0.00%) self.outer_index.shift_in(1); . let result = t.super_visit_with(self); 92,748 ( 0.00%) self.outer_index.shift_out(1); . result . } . . #[inline] . fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow { . // If the outer-exclusive-binder is *strictly greater* than . // `outer_index`, that means that `t` contains some content . // bound at `outer_index` or above (because -- line 1146 ---------------------------------------- -- line 1160 ---------------------------------------- . // visited. . if r.bound_at_or_above_binder(self.outer_index) { . ControlFlow::Break(FoundEscapingVars) . } else { . ControlFlow::CONTINUE . } . } . 470 ( 0.00%) fn visit_const(&mut self, ct: &'tcx ty::Const<'tcx>) -> ControlFlow { . // we don't have a `visit_infer_const` callback, so we have to . // hook in here to catch this case (annoying...), but . // otherwise we do want to remember to visit the rest of the . // const, as it has types/regions embedded in a lot of other . // places. 818 ( 0.00%) match ct.val { . ty::ConstKind::Bound(debruijn, _) if debruijn >= self.outer_index => { . ControlFlow::Break(FoundEscapingVars) . } 12 ( 0.00%) _ => ct.super_visit_with(self), . } 470 ( 0.00%) } . . #[inline] . fn visit_predicate(&mut self, predicate: ty::Predicate<'tcx>) -> ControlFlow { . if predicate.inner.outer_exclusive_binder > self.outer_index { . ControlFlow::Break(FoundEscapingVars) . } else { . ControlFlow::CONTINUE . } -- line 1188 ---------------------------------------- -- line 1210 ---------------------------------------- . #[instrument(level = "trace")] . fn visit_ty(&mut self, t: Ty<'_>) -> ControlFlow { . debug!( . "HasTypeFlagsVisitor: t={:?} t.flags={:?} self.flags={:?}", . t, . t.flags(), . self.flags . ); 750,667 ( 0.01%) if t.flags().intersects(self.flags) { . ControlFlow::Break(FoundFlags) . } else { . ControlFlow::CONTINUE . } . } . . #[inline] . #[instrument(skip(self), level = "trace")] . fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow { 163,213 ( 0.00%) let flags = r.type_flags(); . trace!(r.flags=?flags); . if flags.intersects(self.flags) { . ControlFlow::Break(FoundFlags) . } else { . ControlFlow::CONTINUE . } . } . . #[inline] . #[instrument(level = "trace")] . fn visit_const(&mut self, c: &'tcx ty::Const<'tcx>) -> ControlFlow { 5,204 ( 0.00%) let flags = FlagComputation::for_const(c); . trace!(r.flags=?flags); 1,496 ( 0.00%) if flags.intersects(self.flags) { . ControlFlow::Break(FoundFlags) . } else { . ControlFlow::CONTINUE . } . } . . #[inline] . #[instrument(level = "trace")] . fn visit_unevaluated_const(&mut self, uv: ty::Unevaluated<'tcx>) -> ControlFlow { 72 ( 0.00%) let flags = FlagComputation::for_unevaluated_const(uv); . trace!(r.flags=?flags); . if flags.intersects(self.flags) { . ControlFlow::Break(FoundFlags) . } else { . ControlFlow::CONTINUE . } . } . -- line 1260 ---------------------------------------- -- line 1285 ---------------------------------------- . /// them constraints `'a == 'b`. But if you have `<&'a u32 as . /// Trait>::Foo` and `<&'b u32 as Trait>::Foo`, normalizing those . /// types may mean that `'a` and `'b` don't appear in the results, . /// so they are not considered *constrained*. . just_constrained: bool, . } . . impl LateBoundRegionsCollector { 1,634 ( 0.00%) fn new(just_constrained: bool) -> Self { 11,438 ( 0.00%) LateBoundRegionsCollector { . current_index: ty::INNERMOST, . regions: Default::default(), . just_constrained, . } 1,634 ( 0.00%) } . } . . impl<'tcx> TypeVisitor<'tcx> for LateBoundRegionsCollector { . fn visit_binder>( . &mut self, . t: &Binder<'tcx, T>, . ) -> ControlFlow { 3 ( 0.00%) self.current_index.shift_in(1); 3 ( 0.00%) let result = t.super_visit_with(self); 3 ( 0.00%) self.current_index.shift_out(1); . result . } . 6,378 ( 0.00%) fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow { . // if we are only looking for "constrained" region, we have to . // ignore the inputs to a projection, as they may not appear . // in the normalized form 14,000 ( 0.00%) if self.just_constrained { 11,732 ( 0.00%) if let ty::Projection(..) | ty::Opaque(..) = t.kind() { . return ControlFlow::CONTINUE; . } . } . 18,892 ( 0.00%) t.super_visit_with(self) 4,288 ( 0.00%) } . . fn visit_const(&mut self, c: &'tcx ty::Const<'tcx>) -> ControlFlow { . // if we are only looking for "constrained" region, we have to . // ignore the inputs of an unevaluated const, as they may not appear . // in the normalized form 180 ( 0.00%) if self.just_constrained { 60 ( 0.00%) if let ty::ConstKind::Unevaluated(..) = c.val { . return ControlFlow::CONTINUE; . } . } . . c.super_visit_with(self) . } . . fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow { 4,761 ( 0.00%) if let ty::ReLateBound(debruijn, br) = *r { 635 ( 0.00%) if debruijn == self.current_index { . self.regions.insert(br.kind); . } . } . ControlFlow::CONTINUE . } . } 862,449 ( 0.01%) -------------------------------------------------------------------------------- -- 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. 855 ( 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. 855 ( 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 }, . } 1,710 ( 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> { 195,250 ( 0.00%) fn new() -> InferCtxtInner<'tcx> { 1,327,700 ( 0.02%) 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(), 117,150 ( 0.00%) region_constraint_storage: Some(RegionConstraintStorage::new()), . region_obligations: vec![], . opaque_types: Default::default(), . opaque_types_vars: Default::default(), . } 234,300 ( 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> { 57,227 ( 0.00%) self.projection_cache.with_log(&mut self.undo_log) . } . . #[inline] . fn type_variables(&mut self) -> type_variable::TypeVariableTable<'_, 'tcx> { 1,779,072 ( 0.03%) 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>, . >, . > { 554 ( 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, . &mut ut::UnificationStorage, . &mut InferCtxtUndoLogs<'tcx>, . >, . > { 68 ( 0.00%) self.float_unification_storage.with_log(&mut self.undo_log) . } . . #[inline] . fn const_unification_table( . &mut self, . ) -> ut::UnificationTable< . ut::InPlace< . ty::ConstVid<'tcx>, . &mut ut::UnificationStorage>, . &mut InferCtxtUndoLogs<'tcx>, . >, . > { 8,068 ( 0.00%) self.const_unification_storage.with_log(&mut self.undo_log) . } . . #[inline] . pub fn unwrap_region_constraints(&mut self) -> RegionConstraintCollector<'_, 'tcx> { 752,930 ( 0.01%) self.region_constraint_storage . .as_mut() . .expect("region constraints already solved") 877,707 ( 0.02%) .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. 533,016 ( 0.01%) #[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 575,373 ( 0.01%) #[derive(Clone, Debug)] . pub enum SubregionOrigin<'tcx> { . /// Arose from a subtyping relation 30,358 ( 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. 9,449 ( 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 8,624 ( 0.00%) DataBorrowed(Ty<'tcx>, Span), . . /// (&'a &'b T) where a >= b 2,707 ( 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> { 39,050 ( 0.00%) fn infer_ctxt(self) -> InferCtxtBuilder<'tcx> { 117,150 ( 0.00%) InferCtxtBuilder { tcx: self, defining_use_anchor: None, fresh_typeck_results: None } 39,050 ( 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. 22,536 ( 0.00%) pub fn with_fresh_in_progress_typeck_results(mut self, table_owner: LocalDefId) -> Self { 27,544 ( 0.00%) self.fresh_typeck_results = Some(RefCell::new(ty::TypeckResults::new(table_owner))); 12,520 ( 0.00%) self.with_opaque_type_inference(table_owner) 17,528 ( 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. 1,900 ( 0.00%) pub fn with_opaque_type_inference(mut self, defining_use_anchor: LocalDefId) -> Self { 950 ( 0.00%) self.defining_use_anchor = Some(defining_use_anchor); 6,908 ( 0.00%) self 2,850 ( 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`). 77,520 ( 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| { 146,668 ( 0.00%) let (value, subst) = 10,712 ( 0.00%) infcx.instantiate_canonical_with_fresh_inference_vars(span, canonical); 210,459 ( 0.00%) f(infcx, value, subst) . }) 82,796 ( 0.00%) } . 145,659 ( 0.00%) pub fn enter(&mut self, f: impl for<'a> FnOnce(InferCtxt<'a, 'tcx>) -> R) -> R { 113,456 ( 0.00%) let InferCtxtBuilder { tcx, defining_use_anchor, ref fresh_typeck_results } = *self; . let in_progress_typeck_results = fresh_typeck_results.as_ref(); 1,599,947 ( 0.03%) f(InferCtxt { . tcx, . defining_use_anchor, . in_progress_typeck_results, 39,050 ( 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), 39,050 ( 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), . }) 158,233 ( 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 { 2,539 ( 0.00%) let InferOk { value, obligations } = self; 9,778 ( 0.00%) for obligation in obligations { 312 ( 0.00%) fulfill_cx.register_predicate_obligation(infcx, obligation); . } . value . } . } . . impl<'tcx> InferOk<'tcx, ()> { 51,625 ( 0.00%) pub fn into_obligations(self) -> PredicateObligations<'tcx> { 206,500 ( 0.00%) self.obligations 51,625 ( 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() 82,224 ( 0.00%) } . 710,792 ( 0.01%) pub fn freshen>(&self, t: T) -> T { 799,641 ( 0.01%) t.fold_with(&mut self.freshener()) 799,641 ( 0.01%) } . . /// Returns the origin of the type variable identified by `vid`, or `None` . /// if this is not a type variable. . /// . /// No attempt is made to resolve `ty`. 228 ( 0.00%) pub fn type_var_origin(&'a self, ty: Ty<'tcx>) -> Option { 456 ( 0.00%) match *ty.kind() { 114 ( 0.00%) ty::Infer(ty::TyVar(vid)) => { 456 ( 0.00%) Some(*self.inner.borrow_mut().type_variables().var_origin(vid)) . } . _ => None, . } 456 ( 0.00%) } . 88,849 ( 0.00%) pub fn freshener<'b>(&'b self) -> TypeFreshener<'b, 'tcx> { . freshen::TypeFreshener::new(self, false) 88,849 ( 0.00%) } . . /// Like `freshener`, but does not replace `'static` regions. 223,502 ( 0.00%) pub fn freshener_keep_static<'b>(&'b self) -> TypeFreshener<'b, 'tcx> { . freshen::TypeFreshener::new(self, true) 223,502 ( 0.00%) } . 3,768 ( 0.00%) pub fn unsolved_variables(&self) -> Vec> { 1,884 ( 0.00%) let mut inner = self.inner.borrow_mut(); 1,884 ( 0.00%) let mut vars: Vec> = inner . .type_variables() . .unsolved_variables() . .into_iter() 228 ( 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 }) 32 ( 0.00%) .filter(|&vid| inner.int_unification_table().probe_value(vid).is_none()) . .map(|v| self.tcx.mk_int_var(v)), . ); . vars.extend( . (0..inner.float_unification_table().len()) . .map(|i| ty::FloatVid { index: i as u32 }) 6 ( 0.00%) .filter(|&vid| inner.float_unification_table().probe_value(vid).is_none()) . .map(|v| self.tcx.mk_float_var(v)), . ); . vars 6,594 ( 0.00%) } . 402,062 ( 0.01%) fn combine_fields( . &'a self, . trace: TypeTrace<'tcx>, . param_env: ty::ParamEnv<'tcx>, . ) -> CombineFields<'a, 'tcx> { 1,614,412 ( 0.03%) CombineFields { . infcx: self, 4,036,030 ( 0.07%) trace, . cause: None, . param_env, . obligations: PredicateObligations::new(), . } 402,062 ( 0.01%) } . . /// Clear the "currently in a snapshot" flag, invoke the closure, . /// then restore the flag to its original value. This flag is a . /// debugging measure designed to detect cases where we start a . /// snapshot, create type variables, and register obligations . /// which may involve those type variables in the fulfillment cx, . /// potentially leaving "dangling type variables" behind. . /// In such cases, an assertion will fail when attempting to -- line 753 ---------------------------------------- -- line 760 ---------------------------------------- . /// before we return, this is not a problem, as there won't be any . /// escaping obligations in the main cx. In those cases, you can . /// use this function. . pub fn save_and_restore_in_snapshot_flag(&self, func: F) -> R . where . F: FnOnce(&Self) -> R, . { . let flag = self.in_snapshot.replace(false); 19,350 ( 0.00%) let result = func(self); . self.in_snapshot.set(flag); . result . } . 2,340,504 ( 0.04%) 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(); . 7,021,512 ( 0.12%) 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. 1,170,252 ( 0.02%) _in_progress_typeck_results: self . .in_progress_typeck_results . .map(|typeck_results| typeck_results.borrow()), . } 4,681,008 ( 0.08%) } . 9,710,140 ( 0.17%) #[instrument(skip(self, snapshot), level = "debug")] . fn rollback_to(&self, cause: &str, snapshot: CombinedSnapshot<'a, 'tcx>) { . let CombinedSnapshot { 882,740 ( 0.02%) undo_snapshot, 882,740 ( 0.02%) region_constraints_snapshot, 882,740 ( 0.02%) universe, 882,740 ( 0.02%) was_in_snapshot, 1,765,480 ( 0.03%) _in_progress_typeck_results, . } = snapshot; . . self.in_snapshot.set(was_in_snapshot); . self.universe.set(universe); . . let mut inner = self.inner.borrow_mut(); 882,740 ( 0.02%) inner.rollback_to(undo_snapshot); . inner.unwrap_region_constraints().rollback_to(region_constraints_snapshot); . } . 4,312,680 ( 0.07%) #[instrument(skip(self, snapshot), level = "debug")] . fn commit_from(&self, snapshot: CombinedSnapshot<'a, 'tcx>) { . let CombinedSnapshot { 287,512 ( 0.00%) undo_snapshot, . region_constraints_snapshot: _, . universe: _, 287,512 ( 0.00%) was_in_snapshot, 575,024 ( 0.01%) _in_progress_typeck_results, . } = snapshot; . . self.in_snapshot.set(was_in_snapshot); . . self.inner.borrow_mut().commit(undo_snapshot); . } . . /// Executes `f` and commit the bindings. 176,845 ( 0.00%) #[instrument(skip(self, f), level = "debug")] 224,587 ( 0.00%) pub fn commit_unconditionally(&self, f: F) -> R . where . F: FnOnce(&CombinedSnapshot<'a, 'tcx>) -> R, . { 20,417 ( 0.00%) let snapshot = self.start_snapshot(); 78,889 ( 0.00%) let r = f(&snapshot); 142,919 ( 0.00%) self.commit_from(snapshot); 160,666 ( 0.00%) r . } . . /// Execute `f` and commit the bindings if closure `f` returns `Ok(_)`. 6,690,398 ( 0.12%) #[instrument(skip(self, f), level = "debug")] 8,186,348 ( 0.14%) pub fn commit_if_ok(&self, f: F) -> Result . where . F: FnOnce(&CombinedSnapshot<'a, 'tcx>) -> Result, . { 830,895 ( 0.01%) let snapshot = self.start_snapshot(); 3,736,437 ( 0.06%) let r = f(&snapshot); . debug!("commit_if_ok() -- r.is_ok() = {}", r.is_ok()); 461,899 ( 0.01%) match r { . Ok(_) => { 2,066,713 ( 0.04%) self.commit_from(snapshot); . } . Err(_) => { 5,579,066 ( 0.10%) self.rollback_to("commit_if_ok -- error", snapshot); . } . } 4,363,197 ( 0.08%) r . } . . /// Execute `f` then unroll any bindings it creates. 2,430,020 ( 0.04%) #[instrument(skip(self, f), level = "debug")] 2,525,126 ( 0.04%) pub fn probe(&self, f: F) -> R . where . F: FnOnce(&CombinedSnapshot<'a, 'tcx>) -> R, . { 700,159 ( 0.01%) let snapshot = self.start_snapshot(); 1,082,258 ( 0.02%) let r = f(&snapshot); 3,156,119 ( 0.05%) self.rollback_to("probe", snapshot); 77,947 ( 0.00%) r . } . . /// If `should_skip` is true, then execute `f` then unroll any bindings it creates. 1,395 ( 0.00%) #[instrument(skip(self, f), level = "debug")] 1,860 ( 0.00%) pub fn probe_maybe_skip_leak_check(&self, should_skip: bool, f: F) -> R . where . F: FnOnce(&CombinedSnapshot<'a, 'tcx>) -> R, . { 310 ( 0.00%) let snapshot = self.start_snapshot(); 155 ( 0.00%) let was_skip_leak_check = self.skip_leak_check.get(); 310 ( 0.00%) if should_skip { . self.skip_leak_check.set(true); . } 620 ( 0.00%) let r = f(&snapshot); 1,395 ( 0.00%) self.rollback_to("probe", snapshot); . self.skip_leak_check.set(was_skip_leak_check); 1,860 ( 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 574,680 ( 0.01%) pub fn region_constraints_added_in_snapshot( . &self, . snapshot: &CombinedSnapshot<'a, 'tcx>, . ) -> Option { 1,149,360 ( 0.02%) self.inner . .borrow_mut() . .unwrap_region_constraints() . .region_constraints_added_in_snapshot(&snapshot.undo_snapshot) 862,020 ( 0.01%) } . . pub fn add_given(&self, sub: ty::Region<'tcx>, sup: ty::RegionVid) { . self.inner.borrow_mut().unwrap_region_constraints().add_given(sub, sup); . } . 468 ( 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. . }) . }) 351 ( 0.00%) } . 7,356 ( 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. . }) . }) 5,517 ( 0.00%) } . 46,720 ( 0.00%) #[instrument(skip(self), level = "debug")] . pub fn sub_regions( . &self, . origin: SubregionOrigin<'tcx>, . a: ty::Region<'tcx>, . b: ty::Region<'tcx>, . ) { 42,048 ( 0.00%) self.inner.borrow_mut().unwrap_region_constraints().make_subregion(origin, a, b); . } . . /// Require that the region `r` be equal to one of the regions in . /// the set `regions`. . #[instrument(skip(self), level = "debug")] . pub fn member_constraint( . &self, . opaque_type_def_id: DefId, -- line 947 ---------------------------------------- -- line 969 ---------------------------------------- . /// to `subtype_predicate` -- that is, "coercing" `a` to `b` winds up . /// actually requiring `a <: b`. This is of course a valid coercion, . /// but it's not as flexible as `FnCtxt::coerce` would be. . /// . /// (We may refactor this in the future, but there are a number of . /// practical obstacles. Among other things, `FnCtxt::coerce` presently . /// records adjustments that are required on the HIR in order to perform . /// the coercion, and we don't currently have a way to manage that.) 156 ( 0.00%) pub fn coerce_predicate( . &self, . cause: &ObligationCause<'tcx>, . param_env: ty::ParamEnv<'tcx>, . predicate: ty::PolyCoercePredicate<'tcx>, . ) -> Option> { 104 ( 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, . }); 260 ( 0.00%) self.subtype_predicate(cause, param_env, subtype_predicate) 208 ( 0.00%) } . 50,172 ( 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. 4,181 ( 0.00%) let r_a = self.shallow_resolve(predicate.skip_binder().a); 4,181 ( 0.00%) let r_b = self.shallow_resolve(predicate.skip_binder().b); 27,842 ( 0.00%) match (r_a.kind(), r_b.kind()) { 5,590 ( 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); 5,590 ( 0.00%) return None; . } . _ => {} . } . . Some(self.commit_if_ok(|_snapshot| { 1,386 ( 0.00%) let ty::SubtypePredicate { a_is_expected, a, b } = . self.replace_bound_vars_with_placeholders(predicate); . 2,772 ( 0.00%) let ok = self.at(cause, param_env).sub_exp(a_is_expected, a, b)?; . . Ok(ok.unit()) . })) 37,629 ( 0.00%) } . 17,988 ( 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) . }); 14,990 ( 0.00%) self.sub_regions(origin, r_b, r_a); // `b : a` ==> `a <= b` . Ok(()) . }) 11,992 ( 0.00%) } . . /// Number of type variables created so far. 87 ( 0.00%) pub fn num_ty_vars(&self) -> usize { . self.inner.borrow_mut().type_variables().num_vars() 174 ( 0.00%) } . 28,084 ( 0.00%) pub fn next_ty_var_id(&self, origin: TypeVariableOrigin) -> TyVid { 140,420 ( 0.00%) self.inner.borrow_mut().type_variables().new_var(self.universe(), origin) 42,126 ( 0.00%) } . 22,414 ( 0.00%) pub fn next_ty_var(&self, origin: TypeVariableOrigin) -> Ty<'tcx> { 95,459 ( 0.00%) self.tcx.mk_ty_var(self.next_ty_var_id(origin)) 33,621 ( 0.00%) } . 5,546 ( 0.00%) pub fn next_ty_var_in_universe( . &self, . origin: TypeVariableOrigin, . universe: ty::UniverseIndex, . ) -> Ty<'tcx> { 30,503 ( 0.00%) let vid = self.inner.borrow_mut().type_variables().new_var(universe, origin); 2,773 ( 0.00%) self.tcx.mk_ty_var(vid) 8,319 ( 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 { 65 ( 0.00%) self.inner.borrow_mut().int_unification_table().new_key(None) . } . 39 ( 0.00%) pub fn next_int_var(&self) -> Ty<'tcx> { . self.tcx.mk_int_var(self.next_int_var_id()) 52 ( 0.00%) } . . fn next_float_var_id(&self) -> FloatVid { 10 ( 0.00%) self.inner.borrow_mut().float_unification_table().new_key(None) . } . 6 ( 0.00%) pub fn next_float_var(&self) -> Ty<'tcx> { . self.tcx.mk_float_var(self.next_float_var_id()) 8 ( 0.00%) } . . /// 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. 7,488 ( 0.00%) pub fn next_region_var(&self, origin: RegionVariableOrigin) -> ty::Region<'tcx> { 250,568 ( 0.00%) self.next_region_var_in_universe(origin, self.universe()) 14,976 ( 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. 151,134 ( 0.00%) pub fn next_region_var_in_universe( . &self, . origin: RegionVariableOrigin, . universe: ty::UniverseIndex, . ) -> ty::Region<'tcx> { . let region_var = 982,371 ( 0.02%) self.inner.borrow_mut().unwrap_region_constraints().new_region_var(universe, origin); 377,835 ( 0.01%) self.tcx.mk_region(ty::ReVar(region_var)) 226,701 ( 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. 33,354 ( 0.00%) pub fn universe_of_region(&self, r: ty::Region<'tcx>) -> ty::UniverseIndex { . self.inner.borrow_mut().unwrap_region_constraints().universe(r) 50,031 ( 0.00%) } . . /// Number of region variables created so far. 7,790 ( 0.00%) pub fn num_region_vars(&self) -> usize { . self.inner.borrow_mut().unwrap_region_constraints().num_region_vars() 11,685 ( 0.00%) } . . /// Just a convenient wrapper of `next_region_var` for using during NLL. 21,016 ( 0.00%) pub fn next_nll_region_var(&self, origin: NllRegionVariableOrigin) -> ty::Region<'tcx> { . self.next_region_var(RegionVariableOrigin::Nll(origin)) 42,032 ( 0.00%) } . . /// Just a convenient wrapper of `next_region_var` for using during NLL. 162 ( 0.00%) pub fn next_nll_region_var_in_universe( . &self, . origin: NllRegionVariableOrigin, . universe: ty::UniverseIndex, . ) -> ty::Region<'tcx> { 1,830 ( 0.00%) self.next_region_var_in_universe(RegionVariableOrigin::Nll(origin), universe) 324 ( 0.00%) } . 525,080 ( 0.01%) pub fn var_for_def(&self, span: Span, param: &ty::GenericParamDef) -> GenericArg<'tcx> { 299,715 ( 0.01%) match param.kind { . GenericParamDefKind::Lifetime => { . // Create a region inference variable for the given . // region parameter definition. 14,230 ( 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)`. 203,648 ( 0.00%) let ty_var_id = self.inner.borrow_mut().type_variables().new_var( . self.universe(), 254,560 ( 0.00%) TypeVariableOrigin { . kind: TypeVariableOriginKind::TypeParameterDefinition( 50,912 ( 0.00%) param.name, 50,912 ( 0.00%) Some(param.def_id), . ), . span, . }, . ); . 50,912 ( 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 = 5,423 ( 0.00%) self.inner.borrow_mut().const_unification_table().new_key(ConstVarValue { . origin, . val: ConstVariableValue::Unknown { universe: self.universe() }, . }); 493 ( 0.00%) self.tcx.mk_const_var(const_var_id, self.tcx.type_of(param.def_id)).into() . } . } 3,944 ( 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. 79,122 ( 0.00%) pub fn fresh_substs_for_item(&self, span: Span, def_id: DefId) -> SubstsRef<'tcx> { 455,364 ( 0.01%) InternalSubsts::for_item(self.tcx, def_id, |param, _| self.var_for_def(span, param)) 52,748 ( 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). 1,938 ( 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() . ); . 65,799 ( 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() 2,907 ( 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`. 68,852 ( 0.00%) pub fn resolve_regions( . &self, . region_context: DefId, . outlives_env: &OutlivesEnvironment<'tcx>, . mode: RegionckMode, . ) -> Vec> { 186,884 ( 0.00%) let (var_infos, data) = { . let mut inner = self.inner.borrow_mut(); . let inner = &mut *inner; 9,836 ( 0.00%) assert!( 29,508 ( 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() 9,836 ( 0.00%) }; . . let region_rels = 9,836 ( 0.00%) &RegionRelations::new(self.tcx, region_context, outlives_env.free_region_map()); . 88,524 ( 0.00%) let (lexical_region_resolutions, errors) = 236,064 ( 0.00%) lexical_region_resolve::resolve(region_rels, var_infos, data, mode); . 39,344 ( 0.00%) let old_value = self.lexical_region_resolutions.replace(Some(lexical_region_resolutions)); 9,836 ( 0.00%) assert!(old_value.is_none()); . . errors 88,524 ( 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`. 98,360 ( 0.00%) pub fn resolve_regions_and_report_errors( . &self, . region_context: DefId, . outlives_env: &OutlivesEnvironment<'tcx>, . mode: RegionckMode, . ) { 19,672 ( 0.00%) let errors = self.resolve_regions(region_context, outlives_env, mode); . 29,508 ( 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. 19,672 ( 0.00%) self.report_region_errors(&errors); . } 49,180 ( 0.00%) } . . /// Obtains (and clears) the current set of region . /// constraints. The inference context is still usable: further . /// unifications will simply add new constraints. . /// . /// This method is not meant to be used with normal lexical region . /// resolution. Rather, it is used in the NLL mode as a kind of . /// interim hack: basically we run normal type-check and generate -- line 1307 ---------------------------------------- -- line 1319 ---------------------------------------- . } . . /// Gives temporary access to the region constraint data. . pub fn with_region_constraints( . &self, . op: impl FnOnce(&RegionConstraintData<'tcx>) -> R, . ) -> R { . let mut inner = self.inner.borrow_mut(); 59,008 ( 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. 4,750 ( 0.00%) pub fn take_region_var_origins(&self) -> VarInfos { . let mut inner = self.inner.borrow_mut(); 18,050 ( 0.00%) let (var_infos, data) = inner . .region_constraint_storage . .take() . .expect("regions already resolved") . .with_log(&mut inner.undo_log) 950 ( 0.00%) .into_infos_and_data(); 950 ( 0.00%) assert!(data.is_empty()); . var_infos 7,600 ( 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)`. 26,068 ( 0.00%) pub fn probe_ty_var(&self, vid: TyVid) -> Result, ty::UniverseIndex> { . use self::type_variable::TypeVariableValue; . 78,204 ( 0.00%) match self.inner.borrow_mut().type_variables().probe(vid) { . TypeVariableValue::Known { value } => Ok(value), . TypeVariableValue::Unknown { universe } => Err(universe), . } 91,238 ( 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>, . { 421,951 ( 0.01%) value.fold_with(&mut ShallowResolver { infcx: self }) . } . 32,022 ( 0.00%) pub fn root_var(&self, var: ty::TyVid) -> ty::TyVid { . self.inner.borrow_mut().type_variables().root_var(var) 48,033 ( 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. 3,484 ( 0.00%) pub fn resolve_vars_if_possible(&self, value: T) -> T . where . T: TypeFoldable<'tcx>, . { 476,574 ( 0.01%) if !value.needs_infer() { 561,344 ( 0.01%) return value; // Avoid duplicated subst-folding. . } 461,705 ( 0.01%) let mut r = resolve::OpportunisticVarResolver::new(self); 603,686 ( 0.01%) value.fold_with(&mut r) 3,270 ( 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 . T: TypeFoldable<'tcx>, . { . value.visit_with(&mut resolve::UnresolvedTypeFinder::new(self)).break_value() . } . 14 ( 0.00%) pub fn probe_const_var( . &self, . vid: ty::ConstVid<'tcx>, . ) -> Result<&'tcx ty::Const<'tcx>, ty::UniverseIndex> { 49 ( 0.00%) match self.inner.borrow_mut().const_unification_table().probe_value(vid).val { . ConstVariableValue::Known { value } => Ok(value), . ConstVariableValue::Unknown { universe } => Err(universe), . } 49 ( 0.00%) } . . pub fn fully_resolve>(&self, value: T) -> FixupResult<'tcx, T> { . /*! . * Attempts to resolve all type/region/const variables in . * `value`. Region inference must have been run already (e.g., . * by calling `resolve_regions_and_report_errors`). If some . * variable was never unified, an `Err` results. . * -- line 1437 ---------------------------------------- -- 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) . } . 20,610 ( 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 = 67,724 ( 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 }, . ) . }; 5,552,018 ( 0.10%) self.tcx.replace_bound_vars(value, fld_r, fld_t, fld_c) 13,740 ( 0.00%) } . . /// See the [`region_constraints::RegionConstraintCollector::verify_generic_bound`] method. 107,272 ( 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); . 40,227 ( 0.00%) self.inner . .borrow_mut() . .unwrap_region_constraints() 227,953 ( 0.00%) .verify_generic_bound(origin, kind, a, bound); 93,863 ( 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. 2,386 ( 0.00%) pub fn closure_kind(&self, closure_substs: SubstsRef<'tcx>) -> Option { 4,772 ( 0.00%) let closure_kind_ty = closure_substs.as_closure().kind_ty(); . let closure_kind_ty = self.shallow_resolve(closure_kind_ty); 3,579 ( 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 { 2,100,773 ( 0.04%) self.universe.get() 488,641 ( 0.01%) } . . /// Creates and return a fresh universe that extends all previous . /// universes. Updates `self.universe` to that new universe. 80 ( 0.00%) pub fn create_next_universe(&self) -> ty::UniverseIndex { 118 ( 0.00%) let u = self.universe.get().next_universe(); . self.universe.set(u); . u 80 ( 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`. 5,118,448 ( 0.09%) fn shallow_resolve_ty(&self, typ: Ty<'tcx>) -> Ty<'tcx> { 2,837,896 ( 0.05%) 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`. 1,567,556 ( 0.03%) let known = self.inner.borrow_mut().type_variables().probe(v).known(); . known.map_or(typ, |t| self.shallow_resolve_ty(t)) . } . 784 ( 0.00%) ty::Infer(ty::IntVar(v)) => self . .inner . .borrow_mut() . .int_unification_table() . .probe_value(v) 231 ( 0.00%) .map(|v| v.to_type(self.tcx)) . .unwrap_or(typ), . 112 ( 0.00%) ty::Infer(ty::FloatVar(v)) => self . .inner . .borrow_mut() . .float_unification_table() . .probe_value(v) 40 ( 0.00%) .map(|v| v.to_type(self.tcx)) . .unwrap_or(typ), . . _ => typ, . } 5,758,254 ( 0.10%) } . . /// `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))`. 2,102,441 ( 0.04%) 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(_)`. 12 ( 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() . } . . TyOrConstInferVar::Const(v) => { . // If `probe_value` returns a `Known` value, it never equals . // `ty::ConstKind::Infer(ty::InferConst::Var(v))`. . // . // Not `inlined_probe_value(v)` because this call site is colder. 1,512 ( 0.00%) match self.inner.borrow_mut().const_unification_table().probe_value(v).val { . ConstVariableValue::Unknown { .. } => false, . ConstVariableValue::Known { .. } => true, . } . } . } . } . } . -- line 1704 ---------------------------------------- -- 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`). 17,911 ( 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, . } 17,911 ( 0.00%) } . . /// Tries to extract an inference variable from a type, returns `None` . /// for types other than `ty::Infer(_)` (or `InferTy::Fresh*`). 5,512 ( 0.00%) pub fn maybe_from_ty(ty: Ty<'tcx>) -> Option { 208,806 ( 0.00%) match *ty.kind() { 46,276 ( 0.00%) ty::Infer(ty::TyVar(v)) => Some(TyOrConstInferVar::Ty(v)), 4 ( 0.00%) ty::Infer(ty::IntVar(v)) => Some(TyOrConstInferVar::TyInt(v)), . ty::Infer(ty::FloatVar(v)) => Some(TyOrConstInferVar::TyFloat(v)), . _ => None, . } 5,512 ( 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 { 32 ( 0.00%) match ct.val { 16 ( 0.00%) ty::ConstKind::Infer(InferConst::Var(v)) => Some(TyOrConstInferVar::Const(v)), . _ => None, . } . } . } . . struct ShallowResolver<'a, 'tcx> { . infcx: &'a InferCtxt<'a, 'tcx>, . } . . 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> { 955,222 ( 0.02%) self.infcx.shallow_resolve_ty(ty) . } . 4,052 ( 0.00%) fn fold_const(&mut self, ct: &'tcx ty::Const<'tcx>) -> &'tcx ty::Const<'tcx> { 3,720 ( 0.00%) if let ty::Const { val: ty::ConstKind::Infer(InferConst::Var(vid)), .. } = ct { 4,235 ( 0.00%) self.infcx . .inner . .borrow_mut() . .const_unification_table() 2,541 ( 0.00%) .probe_value(*vid) . .val . .known() . .unwrap_or(ct) . } else { . ct . } 5,065 ( 0.00%) } . } . . impl<'tcx> TypeTrace<'tcx> { . pub fn span(&self) -> Span { 38 ( 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 { 95 ( 0.00%) match *self { 19 ( 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, . { 30,618 ( 0.00%) match *cause.code() { 3,192 ( 0.00%) traits::ObligationCauseCode::ReferenceOutlivesReferent(ref_type) => { 15,960 ( 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 ---------------------------------------- 6,187,382 ( 0.11%) -------------------------------------------------------------------------------- -- 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)] 6,797,088 ( 0.12%) fn intern_ty(&self, kind: TyKind<'tcx>) -> Ty<'tcx> { . self.type_ 4,248,180 ( 0.07%) .intern(kind, |kind| { 125,084 ( 0.00%) let flags = super::flags::FlagComputation::for_kind(&kind); . . let ty_struct = TyS { 250,168 ( 0.00%) kind, . flags: flags.flags, . outer_exclusive_binder: flags.outer_exclusive_binder, . }; . . Interned(self.arena.alloc(ty_struct)) . }) . .0 7,646,724 ( 0.13%) } . . #[inline(never)] 5,255,368 ( 0.09%) fn intern_predicate( . &self, . kind: Binder<'tcx, PredicateKind<'tcx>>, . ) -> &'tcx PredicateInner<'tcx> { . self.predicate 4,598,447 ( 0.08%) .intern(kind, |kind| { 308,586 ( 0.01%) 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 5,912,289 ( 0.10%) } . } . . 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) { 427,631 ( 0.01%) 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) . } . 323,703 ( 0.01%) pub fn get(&self, id: hir::HirId) -> Option<&V> { 64,838 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, id); 64,838 ( 0.00%) self.data.get(&id.local_id) 259,752 ( 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; . 5,322 ( 0.00%) fn index(&self, key: hir::HirId) -> &V { . self.get(key).expect("LocalTableInContext: key not found") 3,548 ( 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> { 20,154 ( 0.00%) pub fn new(hir_owner: LocalDefId) -> TypeckResults<'tcx> { 238,489 ( 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(), . } 20,154 ( 0.00%) } . . /// Returns the final resolution of a `QPath` in an `Expr` or `Pat` node. 74,025 ( 0.00%) pub fn qpath_res(&self, qpath: &hir::QPath<'_>, id: hir::HirId) -> Res { 49,350 ( 0.00%) match *qpath { 92,658 ( 0.00%) hir::QPath::Resolved(_, ref path) => path.res, . hir::QPath::TypeRelative(..) | hir::QPath::LangItem(..) => self . .type_dependent_def(id) 55,392 ( 0.00%) .map_or(Res::Err, |(kind, def_id)| Res::Def(kind, def_id)), . } 123,375 ( 0.00%) } . 662 ( 0.00%) pub fn type_dependent_defs( . &self, . ) -> LocalTableInContext<'_, Result<(DefKind, DefId), ErrorReported>> { 3,578 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.type_dependent_defs } 662 ( 0.00%) } . 11,669 ( 0.00%) pub fn type_dependent_def(&self, id: HirId) -> Option<(DefKind, DefId)> { 24,764 ( 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()) 23,338 ( 0.00%) } . 15,452 ( 0.00%) pub fn type_dependent_def_id(&self, id: HirId) -> Option { . self.type_dependent_def(id).map(|(_, def_id)| def_id) 15,452 ( 0.00%) } . 27,922 ( 0.00%) pub fn type_dependent_defs_mut( . &mut self, . ) -> LocalTableInContextMut<'_, Result<(DefKind, DefId), ErrorReported>> { 27,922 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.type_dependent_defs } 27,922 ( 0.00%) } . . pub fn field_indices(&self) -> LocalTableInContext<'_, usize> { 6,142 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.field_indices } 1,181 ( 0.00%) } . . pub fn field_indices_mut(&mut self) -> LocalTableInContextMut<'_, usize> { 6,822 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.field_indices } 3,411 ( 0.00%) } . . pub fn user_provided_types(&self) -> LocalTableInContext<'_, CanonicalUserType<'tcx>> { 14,998 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.user_provided_types } 7,499 ( 0.00%) } . . pub fn user_provided_types_mut( . &mut self, . ) -> LocalTableInContextMut<'_, CanonicalUserType<'tcx>> { 3,692 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.user_provided_types } 1,846 ( 0.00%) } . . pub fn node_types(&self) -> LocalTableInContext<'_, Ty<'tcx>> { 56,582 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.node_types } 28,291 ( 0.00%) } . . pub fn node_types_mut(&mut self) -> LocalTableInContextMut<'_, Ty<'tcx>> { 101,918 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.node_types } 50,959 ( 0.00%) } . 453,942 ( 0.01%) pub fn node_type(&self, id: hir::HirId) -> Ty<'tcx> { 75,657 ( 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))) . }) 378,285 ( 0.01%) } . 94,556 ( 0.00%) pub fn node_type_opt(&self, id: hir::HirId) -> Option> { 94,556 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, id); . self.node_types.get(&id.local_id).cloned() 189,112 ( 0.00%) } . . pub fn node_substs_mut(&mut self) -> LocalTableInContextMut<'_, SubstsRef<'tcx>> { 12,906 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.node_substs } 6,453 ( 0.00%) } . 31,299 ( 0.00%) pub fn node_substs(&self, id: hir::HirId) -> SubstsRef<'tcx> { 31,299 ( 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()) 62,598 ( 0.00%) } . 20,581 ( 0.00%) pub fn node_substs_opt(&self, id: hir::HirId) -> Option> { 20,581 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, id); . self.node_substs.get(&id.local_id).cloned() 41,162 ( 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> { 17,372 ( 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> { 80,372 ( 0.00%) self.node_type(expr.hir_id) . } . . pub fn expr_ty_opt(&self, expr: &hir::Expr<'_>) -> Option> { 68,751 ( 0.00%) self.node_type_opt(expr.hir_id) . } . . pub fn adjustments(&self) -> LocalTableInContext<'_, Vec>> { 40,354 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.adjustments } 20,177 ( 0.00%) } . . pub fn adjustments_mut( . &mut self, . ) -> LocalTableInContextMut<'_, Vec>> { 53,174 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.adjustments } 26,587 ( 0.00%) } . 31,441 ( 0.00%) pub fn expr_adjustments(&self, expr: &hir::Expr<'_>) -> &[ty::adjustment::Adjustment<'tcx>] { 62,882 ( 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[..]) 62,882 ( 0.00%) } . . /// Returns the type of `expr`, considering any `Adjustment` . /// entry recorded for that expression. 4,530 ( 0.00%) pub fn expr_ty_adjusted(&self, expr: &hir::Expr<'_>) -> Ty<'tcx> { 906 ( 0.00%) self.expr_adjustments(expr).last().map_or_else(|| self.expr_ty(expr), |adj| adj.target) 744 ( 0.00%) } . 235 ( 0.00%) pub fn expr_ty_adjusted_opt(&self, expr: &hir::Expr<'_>) -> Option> { 47 ( 0.00%) self.expr_adjustments(expr).last().map(|adj| adj.target).or_else(|| self.expr_ty_opt(expr)) 152 ( 0.00%) } . 2,916 ( 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. 5,832 ( 0.00%) if let hir::ExprKind::Path(_) = expr.kind { . return false; . } . 6,112 ( 0.00%) matches!(self.type_dependent_defs().get(expr.hir_id), Some(Ok((DefKind::AssocFn, _)))) 5,832 ( 0.00%) } . 26,226 ( 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 . }) 34,968 ( 0.00%) } . . pub fn pat_binding_modes(&self) -> LocalTableInContext<'_, BindingMode> { 22,914 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.pat_binding_modes } 7,086 ( 0.00%) } . . pub fn pat_binding_modes_mut(&mut self) -> LocalTableInContextMut<'_, BindingMode> { 11,548 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.pat_binding_modes } 5,774 ( 0.00%) } . . pub fn pat_adjustments(&self) -> LocalTableInContext<'_, Vec>> { 29,132 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.pat_adjustments } 14,566 ( 0.00%) } . . pub fn pat_adjustments_mut(&mut self) -> LocalTableInContextMut<'_, Vec>> { 8,828 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.pat_adjustments } 4,414 ( 0.00%) } . . /// For a given closure, returns the iterator of `ty::CapturedPlace`s that are captured . /// by the closure. 5,400 ( 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() 6,750 ( 0.00%) } . . pub fn closure_kind_origins(&self) -> LocalTableInContext<'_, (Span, HirPlace<'tcx>)> { 1,710 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.closure_kind_origins } 855 ( 0.00%) } . . pub fn closure_kind_origins_mut( . &mut self, . ) -> LocalTableInContextMut<'_, (Span, HirPlace<'tcx>)> { . LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.closure_kind_origins } . } . . pub fn liberated_fn_sigs(&self) -> LocalTableInContext<'_, ty::FnSig<'tcx>> { 5,258 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.liberated_fn_sigs } 2,629 ( 0.00%) } . . pub fn liberated_fn_sigs_mut(&mut self) -> LocalTableInContextMut<'_, ty::FnSig<'tcx>> { 3,548 ( 0.00%) LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.liberated_fn_sigs } 1,774 ( 0.00%) } . . pub fn fru_field_types(&self) -> LocalTableInContext<'_, Vec>> { 1,710 ( 0.00%) LocalTableInContext { hir_owner: self.hir_owner, data: &self.fru_field_types } 855 ( 0.00%) } . . pub fn fru_field_types_mut(&mut self) -> LocalTableInContextMut<'_, Vec>> { . LocalTableInContextMut { hir_owner: self.hir_owner, data: &mut self.fru_field_types } . } . 60 ( 0.00%) pub fn is_coercion_cast(&self, hir_id: hir::HirId) -> bool { 20 ( 0.00%) validate_hir_id_for_typeck_results(self.hir_owner, hir_id); . self.coercion_casts.contains(&hir_id.local_id) 40 ( 0.00%) } . . pub fn set_coercion_cast(&mut self, id: ItemLocalId) { . self.coercion_casts.insert(id); . } . . pub fn coercion_casts(&self) -> &ItemLocalSet { 855 ( 0.00%) &self.coercion_casts 855 ( 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>; . 74 ( 0.00%) #[derive(Clone, Debug, TyEncodable, TyDecodable, HashStable, TypeFoldable, Lift)] . pub struct CanonicalUserTypeAnnotation<'tcx> { . pub user_ty: CanonicalUserType<'tcx>, . pub span: Span, 1,127 ( 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. 3,476 ( 0.00%) pub fn is_identity(&self) -> bool { 6,952 ( 0.00%) match self.value { . UserType::Ty(_) => false, . UserType::TypeOf(_, user_substs) => { 3,476 ( 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() { 10,700 ( 0.00%) GenericArgKind::Type(ty) => match ty.kind() { . ty::Bound(debruijn, b) => { . // We only allow a `ty::INNERMOST` index in substitutions. 5,065 ( 0.00%) assert_eq!(*debruijn, ty::INNERMOST); . cvar == b.var . } . _ => false, . }, . 870 ( 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, . }, . 14 ( 0.00%) GenericArgKind::Const(ct) => match ct.val { 21 ( 0.00%) ty::ConstKind::Bound(debruijn, b) => { . // We only allow a `ty::INNERMOST` index in substitutions. 7 ( 0.00%) assert_eq!(debruijn, ty::INNERMOST); . cvar == b . } . _ => false, . }, . } . }) . } . } 6,952 ( 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. 6,762 ( 0.00%) #[derive(Copy, Clone, Debug, PartialEq, TyEncodable, TyDecodable)] 39,734 ( 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> { 38,160 ( 0.00%) pub fn typeck_opt_const_arg( . self, . def: ty::WithOptConstParam, . ) -> &'tcx TypeckResults<'tcx> { 15,264 ( 0.00%) if let Some(param_did) = def.const_param_did { . self.typeck_const_arg((def.did, param_did)) . } else { . self.typeck(def.did) . } 30,528 ( 0.00%) } . 2,850 ( 0.00%) pub fn alloc_steal_thir(self, thir: Thir<'tcx>) -> &'tcx Steal> { 950 ( 0.00%) self.arena.alloc(Steal::new(thir)) 3,800 ( 0.00%) } . 14,565 ( 0.00%) pub fn alloc_steal_mir(self, mir: Body<'tcx>) -> &'tcx Steal> { 2,913 ( 0.00%) self.arena.alloc(Steal::new(mir)) 20,391 ( 0.00%) } . 3,800 ( 0.00%) pub fn alloc_steal_promoted( . self, . promoted: IndexVec>, . ) -> &'tcx Steal>> { 950 ( 0.00%) self.arena.alloc(Steal::new(promoted)) 4,750 ( 0.00%) } . 2,259 ( 0.00%) pub fn alloc_adt_def( . self, . did: DefId, . kind: AdtKind, . variants: IndexVec, . repr: ReprOptions, . ) -> &'tcx ty::AdtDef { 4,016 ( 0.00%) self.intern_adt_def(ty::AdtDef::new(self, did, kind, variants, repr)) 1,004 ( 0.00%) } . . /// Allocates a read-only byte or string literal for `mir::interpret`. . pub fn allocate_bytes(self, bytes: &[u8]) -> interpret::AllocId { . // Create an allocation that just contains these bytes. . let alloc = interpret::Allocation::from_bytes_byte_aligned_immutable(bytes); . let alloc = self.intern_const_alloc(alloc); . self.create_memory_alloc(alloc) . } . . /// Returns a range of the start/end indices specified with the . /// `rustc_layout_scalar_valid_range` attribute. . // FIXME(eddyb) this is an awkward spot for this method, maybe move it? 5,904 ( 0.00%) pub fn layout_scalar_valid_range(self, def_id: DefId) -> (Bound, Bound) { 2,952 ( 0.00%) let attrs = self.get_attrs(def_id); 12,546 ( 0.00%) let get = |name| { 2,952 ( 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); 8 ( 0.00%) if let Some( . &[ . ast::NestedMetaItem::Literal(ast::Lit { 4 ( 0.00%) kind: ast::LitKind::Int(a, _), .. . }), . ], 2 ( 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 . } 14,760 ( 0.00%) }; 4,428 ( 0.00%) ( 4,428 ( 0.00%) get(sym::rustc_layout_scalar_valid_range_start), 2,214 ( 0.00%) get(sym::rustc_layout_scalar_valid_range_end), . ) 5,904 ( 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 }) . } . 840 ( 0.00%) pub fn consider_optimizing String>(self, msg: T) -> bool { 120 ( 0.00%) let cname = self.crate_name(LOCAL_CRATE); 960 ( 0.00%) self.sess.consider_optimizing(cname.as_str(), msg) 960 ( 0.00%) } . . /// Obtain all lang items of this crate and all dependencies (recursively) 2,580,669 ( 0.04%) pub fn lang_items(self) -> &'tcx rustc_hir::lang_items::LanguageItems { . self.get_lang_items(()) 3,318,003 ( 0.06%) } . . /// 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. 308 ( 0.00%) pub fn get_diagnostic_item(self, name: Symbol) -> Option { . self.all_diagnostic_items(()).name_to_id.get(&name).copied() 352 ( 0.00%) } . . /// Obtain the diagnostic item's name 51,142 ( 0.00%) pub fn get_diagnostic_name(self, id: DefId) -> Option { . self.diagnostic_items(id.krate).id_to_name.get(&id).copied() 58,448 ( 0.00%) } . . /// Check whether the diagnostic item with the given `name` has the given `DefId`. 43,057 ( 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) 49,208 ( 0.00%) } . 31,626 ( 0.00%) pub fn stability(self) -> &'tcx stability::Index<'tcx> { . self.stability_index(()) 40,662 ( 0.00%) } . 607,369 ( 0.01%) pub fn features(self) -> &'tcx rustc_feature::Features { . self.features_query(()) 694,136 ( 0.01%) } . 2 ( 0.00%) pub fn def_key(self, id: DefId) -> rustc_hir::definitions::DefKey { . // Accessing the DefKey is ok, since it is part of DefPathHash. 71,815 ( 0.00%) if let Some(id) = id.as_local() { . self.untracked_resolutions.definitions.def_key(id) . } else { 26,170 ( 0.00%) self.untracked_resolutions.cstore.def_key(id) . } . } . . /// Converts a `DefId` into its fully expanded `DefPath` (every . /// `DefId` is really just an interned `DefPath`). . /// . /// Note that if `id` is not local to this crate, the result will . /// be a non-local `DefPath`. -- line 1272 ---------------------------------------- -- line 1277 ---------------------------------------- . } else { . self.untracked_resolutions.cstore.def_path(id) . } . } . . #[inline] . pub fn def_path_hash(self, def_id: DefId) -> rustc_hir::definitions::DefPathHash { . // Accessing the DefPathHash is ok, it is incr. comp. stable. 9,062 ( 0.00%) if let Some(def_id) = def_id.as_local() { . self.untracked_resolutions.definitions.def_path_hash(def_id) . } else { 296 ( 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 { 59,942 ( 0.00%) &*self.untracked_resolutions.cstore 29,971 ( 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> { 86 ( 0.00%) let resolutions = &self.gcx.untracked_resolutions; 407 ( 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.) 1,710 ( 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=...` . 2,565 ( 0.00%) if self.features().nll { . return BorrowckMode::Mir; . } . 855 ( 0.00%) self.sess.opts.borrowck_mode 3,420 ( 0.00%) } . . /// If `true`, we should use lazy normalization for constants, otherwise . /// we still evaluate them eagerly. . #[inline] . pub fn lazy_normalization(self) -> bool { 425 ( 0.00%) let features = self.features(); . // Note: We only use lazy normalization for generic const expressions. 303 ( 0.00%) features.generic_const_exprs . } . . #[inline] . pub fn local_crate_exports_generics(self) -> bool { . debug_assert!(self.sess.opts.share_generics()); . . self.sess.crate_types().iter().any(|crate_type| { . match crate_type { -- line 1442 ---------------------------------------- -- line 1554 ---------------------------------------- . self.mk_imm_ref( . self.lifetimes.re_static, . self.type_of(self.require_lang_item(LangItem::PanicLocation, None)) . .subst(self, self.mk_substs([self.lifetimes.re_static.into()].iter())), . ) . } . . /// Returns a displayable description and article for the given `def_id` (e.g. `("a", "struct")`). 2,959 ( 0.00%) pub fn article_and_description(self, def_id: DefId) -> (&'static str, &'static str) { 2,152 ( 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"), . }, 4,842 ( 0.00%) def_kind => (def_kind.article(), def_kind.descr(def_id)), . } 2,421 ( 0.00%) } . . pub fn type_length_limit(self) -> Limit { . self.limits(()).type_length_limit . } . 887,817 ( 0.02%) pub fn recursion_limit(self) -> Limit { . self.limits(()).recursion_limit 1,014,648 ( 0.02%) } . . pub fn move_size_limit(self) -> Limit { . self.limits(()).move_size_limit . } . 168 ( 0.00%) pub fn const_eval_limit(self) -> Limit { . self.limits(()).const_eval_limit 192 ( 0.00%) } . . pub fn all_traits(self) -> impl Iterator + 'tcx { . iter::once(LOCAL_CRATE) . .chain(self.crates(()).iter().copied()) . .flat_map(move |cnum| self.traits_in_crate(cnum).iter().copied()) . } . } . -- line 1594 ---------------------------------------- -- line 1684 ---------------------------------------- . /// This is the implicit state of rustc. It contains the current . /// `TyCtxt` and query. It is updated when creating a local interner or . /// executing a new query. Whenever there's a `TyCtxt` value available . /// you should also have access to an `ImplicitCtxt` through the functions . /// in this module. . #[derive(Clone)] . pub struct ImplicitCtxt<'a, 'tcx> { . /// The current `TyCtxt`. 1 ( 0.00%) pub tcx: TyCtxt<'tcx>, . . /// The current query job, if any. This is updated by `JobOwner::start` in . /// `ty::query::plumbing` when executing a query. . pub query: Option>, . . /// Where to store diagnostics for the current query job, if any. . /// This is updated by `JobOwner::start` in `ty::query::plumbing` when executing a query. . pub diagnostics: Option<&'a Lock>>, -- line 1700 ---------------------------------------- -- line 1703 ---------------------------------------- . pub layout_depth: usize, . . /// The current dep graph task. This is used to add dependencies to queries . /// when executing them. . pub task_deps: TaskDepsRef<'a>, . } . . impl<'a, 'tcx> ImplicitCtxt<'a, 'tcx> { 5 ( 0.00%) pub fn new(gcx: &'tcx GlobalCtxt<'tcx>) -> Self { . let tcx = TyCtxt { gcx }; 25 ( 0.00%) ImplicitCtxt { . tcx, . query: None, . diagnostics: None, . layout_depth: 0, . task_deps: TaskDepsRef::Ignore, . } 5 ( 0.00%) } . } . . /// Sets Rayon's thread-local variable, which is preserved for Rayon jobs . /// to `value` during the call to `f`. It is restored to its previous value after. . /// This is used to set the pointer to the new `ImplicitCtxt`. . #[cfg(parallel_compiler)] . #[inline] . fn set_tlv R, R>(value: usize, f: F) -> R { -- line 1728 ---------------------------------------- -- line 1745 ---------------------------------------- . . /// Sets TLV to `value` during the call to `f`. . /// It is restored to its previous value after. . /// This is used to set the pointer to the new `ImplicitCtxt`. . #[cfg(not(parallel_compiler))] . #[inline] . fn set_tlv R, R>(value: usize, f: F) -> R { . let old = get_tlv(); 177,421 ( 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(); 673,360 ( 0.01%) if context == 0 { . f(None) . } else { . // We could get an `ImplicitCtxt` pointer from another thread. . // Ensure that `ImplicitCtxt` is `Sync`. . sync::assert_sync::>(); . . unsafe { f(Some(&*(context as *const ImplicitCtxt<'_, '_>))) } . } -- line 1789 ---------------------------------------- -- line 1805 ---------------------------------------- . /// This will panic if you pass it a `TyCtxt` which is different from the current . /// `ImplicitCtxt`'s `tcx` field. . #[inline] . pub fn with_related_context<'tcx, F, R>(tcx: TyCtxt<'tcx>, f: F) -> R . where . F: FnOnce(&ImplicitCtxt<'_, 'tcx>) -> R, . { . with_context(|context| unsafe { 330,322 ( 0.01%) assert!(ptr_eq(context.tcx.gcx, tcx.gcx)); . let context: &ImplicitCtxt<'_, '_> = mem::transmute(context); 330,270 ( 0.01%) 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> { 803,079 ( 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)`. 344,052 ( 0.01%) self.0.kind().hash(s) . } . } . . impl<'tcx> Borrow>> for Interned<'tcx, PredicateInner<'tcx>> { . fn borrow<'a>(&'a self) -> &'a Binder<'tcx, PredicateKind<'tcx>> { 613,101 ( 0.01%) &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)`. 57,340 ( 0.00%) self.0.kind.hash(s) . } . } . . impl<'tcx, T> Borrow<[T]> for Interned<'tcx, List> { . fn borrow<'a>(&'a self) -> &'a [T] { 1,448,304 ( 0.03%) &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)`. 147,896 ( 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 { 491,165 ( 0.01%) &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)`. 33,571 ( 0.00%) self.0.hash(s) . } . } . . impl<'tcx> TyCtxt<'tcx> { 3,984,864 ( 0.07%) pub fn $method(self, v: $ty) -> &'tcx $ty { 2,007,483 ( 0.03%) self.interners.$name.intern(v, |v| { 7,781 ( 0.00%) Interned(self.interners.arena.alloc(v)) . }).0 4,482,090 ( 0.08%) } . })+ . } . } . . 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> { 15,198,777 ( 0.26%) $(pub fn $method(self, v: &[$ty]) -> &'tcx List<$ty> { . self.interners.$field.intern_ref(v, || { . Interned(List::from_arena(&*self.arena, v)) . }).0 13,611,663 ( 0.24%) })+ . } . ); . } . . 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`. 9,084 ( 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() . }) 6,813 ( 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(); 1,514 ( 0.00%) let mut stack = vec![trait_def_id]; . . set.insert(trait_def_id); . 6,813 ( 0.00%) iter::from_fn(move || -> Option { 1,604 ( 0.00%) let trait_did = stack.pop()?; 802 ( 0.00%) let generic_predicates = self.super_predicates_of(trait_did); . . for (predicate, _) in generic_predicates.predicates { 1,854 ( 0.00%) if let ty::PredicateKind::Trait(data) = predicate.kind().skip_binder() { 1,236 ( 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> { 644,368 ( 0.01%) 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> { 5,792,654 ( 0.10%) self.interners.intern_ty(st) . } . . #[inline] . pub fn mk_predicate(self, binder: Binder<'tcx, PredicateKind<'tcx>>) -> Predicate<'tcx> { 7,128,481 ( 0.12%) let inner = self.interners.intern_predicate(binder); . Predicate { inner } . } . . #[inline] 18,187,088 ( 0.31%) pub fn reuse_or_mk_predicate( . self, . pred: Predicate<'tcx>, . binder: Binder<'tcx, PredicateKind<'tcx>>, . ) -> Predicate<'tcx> { 1,717,593 ( 0.03%) if pred.kind() != binder { self.mk_predicate(binder) } else { pred } 18,187,088 ( 0.31%) } . . pub fn mk_mach_int(self, tm: IntTy) -> Ty<'tcx> { 101 ( 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, . } 101 ( 0.00%) } . . pub fn mk_mach_uint(self, tm: UintTy) -> Ty<'tcx> { 615 ( 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, . } 615 ( 0.00%) } . . pub fn mk_mach_float(self, tm: FloatTy) -> Ty<'tcx> { 184 ( 0.00%) match tm { . FloatTy::F32 => self.types.f32, . FloatTy::F64 => self.types.f64, . } 184 ( 0.00%) } . . #[inline] . pub fn mk_static_str(self) -> Ty<'tcx> { 344 ( 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)) . } . 24 ( 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 = 45 ( 0.00%) InternalSubsts::for_item(self, wrapper_def_id, |param, substs| match param.kind { . GenericParamDefKind::Lifetime | GenericParamDefKind::Const { .. } => bug!(), 3 ( 0.00%) GenericParamDefKind::Type { has_default, .. } => { 12 ( 0.00%) if param.index == 0 { . ty_param.into() . } else { 3 ( 0.00%) assert!(has_default); 9 ( 0.00%) self.type_of(param.def_id).subst(self, substs).into() . } . } . }); 3 ( 0.00%) self.mk_ty(Adt(adt_def, substs)) 24 ( 0.00%) } . . #[inline] . pub fn mk_box(self, ty: Ty<'tcx>) -> Ty<'tcx> { 15 ( 0.00%) let def_id = self.require_lang_item(LangItem::OwnedBox, None); 33 ( 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] 483 ( 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))) 504 ( 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> { 112 ( 0.00%) let kinds: Vec<_> = ts.iter().map(|&t| GenericArg::from(t)).collect(); 1,217 ( 0.00%) self.mk_ty(Tuple(self.intern_substs(&kinds))) . } . . pub fn mk_tup], Ty<'tcx>>>(self, iter: I) -> I::Output { 67,730 ( 0.00%) iter.intern_with(|ts| { 33,532 ( 0.00%) let kinds: Vec<_> = ts.iter().map(|&t| GenericArg::from(t)).collect(); 56,432 ( 0.00%) self.mk_ty(Tuple(self.intern_substs(&kinds))) 60,957 ( 0.00%) }) . } . . #[inline] . pub fn mk_unit(self) -> Ty<'tcx> { 205 ( 0.00%) self.types.unit . } . . #[inline] . pub fn mk_diverging_default(self) -> Ty<'tcx> { . 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> { 3,274 ( 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> { 2,958 ( 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 2432 ---------------------------------------- . . #[inline] . pub fn mk_ty_infer(self, it: InferTy) -> Ty<'tcx> { . self.mk_ty(Infer(it)) . } . . #[inline] . pub fn mk_const_infer(self, ic: InferConst<'tcx>, ty: Ty<'tcx>) -> &'tcx ty::Const<'tcx> { 315 ( 0.00%) self.mk_const(ty::Const { val: ty::ConstKind::Infer(ic), ty }) . } . . #[inline] . pub fn mk_ty_param(self, index: u32, name: Symbol) -> Ty<'tcx> { . self.mk_ty(Param(ParamTy { index, name })) . } . . #[inline] . pub fn mk_const_param(self, index: u32, name: Symbol, ty: Ty<'tcx>) -> &'tcx Const<'tcx> { 1,785 ( 0.00%) self.mk_const(ty::Const { val: ty::ConstKind::Param(ParamConst { index, name }), ty }) . } . 128,709 ( 0.00%) pub fn mk_param_from_def(self, param: &ty::GenericParamDef) -> GenericArg<'tcx> { 86,093 ( 0.00%) match param.kind { . GenericParamDefKind::Lifetime => { 17,526 ( 0.00%) self.mk_region(ty::ReEarlyBound(param.to_early_bound_region_data())).into() . } 30,422 ( 0.00%) GenericParamDefKind::Type { .. } => self.mk_ty_param(param.index, param.name).into(), . GenericParamDefKind::Const { .. } => { 1,020 ( 0.00%) self.mk_const_param(param.index, param.name, self.type_of(param.def_id)).into() . } . } 128,709 ( 0.00%) } . . #[inline] . pub fn mk_opaque(self, def_id: DefId, substs: SubstsRef<'tcx>) -> Ty<'tcx> { . self.mk_ty(Opaque(def_id, substs)) . } . 95 ( 0.00%) pub fn mk_place_field(self, place: Place<'tcx>, f: Field, ty: Ty<'tcx>) -> Place<'tcx> { 95 ( 0.00%) self.mk_place_elem(place, PlaceElem::Field(f, ty)) 190 ( 0.00%) } . 2 ( 0.00%) pub fn mk_place_deref(self, place: Place<'tcx>) -> Place<'tcx> { 6 ( 0.00%) self.mk_place_elem(place, PlaceElem::Deref) 4 ( 0.00%) } . 21 ( 0.00%) pub fn mk_place_downcast( . self, . place: Place<'tcx>, . adt_def: &'tcx AdtDef, . variant_index: VariantIdx, . ) -> Place<'tcx> { 21 ( 0.00%) self.mk_place_elem( . place, 42 ( 0.00%) PlaceElem::Downcast(Some(adt_def.variants[variant_index].name), variant_index), . ) 42 ( 0.00%) } . . pub fn mk_place_downcast_unnamed( . self, . place: Place<'tcx>, . variant_index: VariantIdx, . ) -> Place<'tcx> { . self.mk_place_elem(place, PlaceElem::Downcast(None, variant_index)) . } -- line 2496 ---------------------------------------- -- line 2497 ---------------------------------------- . . pub fn mk_place_index(self, place: Place<'tcx>, index: Local) -> Place<'tcx> { . self.mk_place_elem(place, PlaceElem::Index(index)) . } . . /// This method copies `Place`'s projection, add an element and reintern it. Should not be used . /// to build a full `Place` it's just a convenient way to grab a projection and modify it in . /// flight. 1,062 ( 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) } 1,180 ( 0.00%) } . 7,504 ( 0.00%) pub fn intern_poly_existential_predicates( . self, . eps: &[ty::Binder<'tcx, ExistentialPredicate<'tcx>>], . ) -> &'tcx List>> { 1,072 ( 0.00%) assert!(!eps.is_empty()); . assert!( . eps.array_windows() 70 ( 0.00%) .all(|[a, b]| a.skip_binder().stable_cmp(self, &b.skip_binder()) . != Ordering::Greater) . ); 4,288 ( 0.00%) self._intern_poly_existential_predicates(eps) 8,576 ( 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. 73,895 ( 0.00%) if preds.is_empty() { . // The macro-generated method below asserts we don't intern an empty slice. . List::empty() . } else { 70,693 ( 0.00%) self._intern_predicates(preds) . } 7,592 ( 0.00%) } . . pub fn intern_type_list(self, ts: &[Ty<'tcx>]) -> &'tcx List> { 80,012 ( 0.00%) if ts.is_empty() { List::empty() } else { self._intern_type_list(ts) } 488 ( 0.00%) } . . pub fn intern_substs(self, ts: &[GenericArg<'tcx>]) -> &'tcx List> { 2,529,123 ( 0.04%) if ts.is_empty() { List::empty() } else { self._intern_substs(ts) } 36,888 ( 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> { 15,947 ( 0.00%) if ts.is_empty() { List::empty() } else { self._intern_place_elems(ts) } 10,778 ( 0.00%) } . . pub fn intern_canonical_var_infos( . self, . ts: &[CanonicalVarInfo<'tcx>], . ) -> CanonicalVarInfos<'tcx> { 136,956 ( 0.00%) if ts.is_empty() { List::empty() } else { self._intern_canonical_var_infos(ts) } 488 ( 0.00%) } . . pub fn intern_bound_variable_kinds( . self, . ts: &[ty::BoundVariableKind], . ) -> &'tcx List { 48,204 ( 0.00%) if ts.is_empty() { List::empty() } else { self._intern_bound_variable_kinds(ts) } 78,154 ( 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 { 6,747 ( 0.00%) inputs_and_output: self.intern_type_list(xs), 1,511 ( 0.00%) c_variadic, 1,939 ( 0.00%) unsafety, 2,166 ( 0.00%) abi, 950 ( 0.00%) }) . } . . pub fn mk_poly_existential_predicates< . I: InternAs< . [ty::Binder<'tcx, ExistentialPredicate<'tcx>>], . &'tcx List>>, . >, . >( . self, . iter: I, . ) -> I::Output { 4,262 ( 0.00%) iter.intern_with(|xs| self.intern_poly_existential_predicates(xs)) . } . . pub fn mk_predicates], &'tcx List>>>( . self, . iter: I, . ) -> I::Output { 30 ( 0.00%) iter.intern_with(|xs| self.intern_predicates(xs)) . } . . pub fn mk_type_list], &'tcx List>>>(self, iter: I) -> I::Output { 8,751 ( 0.00%) iter.intern_with(|xs| self.intern_type_list(xs)) . } . . pub fn mk_substs], &'tcx List>>>( . self, . iter: I, . ) -> I::Output { 893,446 ( 0.02%) iter.intern_with(|xs| self.intern_substs(xs)) . } . . pub fn mk_place_elems], &'tcx List>>>( . self, . iter: I, . ) -> I::Output { 90 ( 0.00%) iter.intern_with(|xs| self.intern_place_elems(xs)) . } . 40,838 ( 0.00%) pub fn mk_substs_trait(self, self_ty: Ty<'tcx>, rest: &[GenericArg<'tcx>]) -> SubstsRef<'tcx> { . self.mk_substs(iter::once(self_ty.into()).chain(rest.iter().cloned())) 81,676 ( 0.00%) } . . pub fn mk_bound_variable_kinds< . I: InternAs<[ty::BoundVariableKind], &'tcx List>, . >( . self, . iter: I, . ) -> I::Output { 240,203 ( 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. 228,830 ( 0.00%) pub fn maybe_lint_level_root_bounded(self, mut id: HirId, bound: HirId) -> HirId { 228,830 ( 0.00%) let hir = self.hir(); . loop { 347,379 ( 0.01%) if id == bound { . return bound; . } . 441,563 ( 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); 249,309 ( 0.00%) if next == id { . bug!("lint traversal reached the root of the crate"); . } . id = next; . } 326,900 ( 0.01%) } . 12,296 ( 0.00%) pub fn lint_level_at_node( . self, . lint: &'static Lint, . mut id: hir::HirId, . ) -> (Level, LintLevelSource) { . let sets = self.lint_levels(()); . loop { 74,951 ( 0.00%) if let Some(pair) = sets.level_and_source(lint, id, self.sess) { . return pair; . } 5,937 ( 0.00%) let next = self.hir().get_parent_node(id); 17,811 ( 0.00%) if next == id { . bug!("lint traversal reached the root of the crate"); . } . id = next; . } 12,296 ( 0.00%) } . 728 ( 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>), . ) { 2,238 ( 0.00%) let (level, src) = self.lint_level_at_node(lint, hir_id); 766 ( 0.00%) struct_lint_level(self.sess, lint, level, src, Some(span.into()), decorate); 416 ( 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); . } . 13,580 ( 0.00%) pub fn in_scope_traits(self, id: HirId) -> Option<&'tcx [TraitCandidate]> { 3,880 ( 0.00%) let map = self.in_scope_traits_map(id.owner)?; . let candidates = map.get(&id.local_id)?; 3,880 ( 0.00%) Some(&*candidates) 15,520 ( 0.00%) } . 34,650 ( 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()) 44,550 ( 0.00%) } . 5,634 ( 0.00%) pub fn is_late_bound(self, id: HirId) -> bool { . self.is_late_bound_map(id.owner) 289 ( 0.00%) .map_or(false, |(owner, set)| owner == id.owner && set.contains(&id.local_id)) 5,008 ( 0.00%) } . 50,246 ( 0.00%) pub fn object_lifetime_defaults(self, id: HirId) -> Option> { . self.object_lifetime_defaults_map(id.owner) 64,602 ( 0.00%) } . 72,405 ( 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(), . ) 72,405 ( 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 1,450 ( 0.00%) pub fn is_const_fn(self, def_id: DefId) -> bool { 145 ( 0.00%) if self.is_const_fn_raw(def_id) { 184 ( 0.00%) match self.lookup_const_stability(def_id) { 12 ( 0.00%) Some(stability) if stability.level.is_unstable() => { . // has a `rustc_const_unstable` attribute, check whether the user enabled the . // corresponding feature gate. 4 ( 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 . } 1,305 ( 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; 102,904 ( 0.00%) fn intern_with(self, f: F) -> Self::Output . where . F: FnOnce(&[T]) -> R, . { 9,943,722 ( 0.17%) E::intern_with(self, f) 106,587 ( 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; 577,991 ( 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`. 544,894 ( 0.01%) match iter.size_hint() { . (0, Some(0)) => { 3 ( 0.00%) assert!(iter.next().is_none()); . f(&[]) . } . (1, Some(1)) => { . let t0 = iter.next().unwrap(); 47 ( 0.00%) assert!(iter.next().is_none()); 57,147 ( 0.00%) f(&[t0]) . } . (2, Some(2)) => { . let t0 = iter.next().unwrap(); . let t1 = iter.next().unwrap(); 524 ( 0.00%) assert!(iter.next().is_none()); 64,077 ( 0.00%) f(&[t0, t1]) . } 3,952 ( 0.00%) _ => f(&iter.collect::>()), . } 451,700 ( 0.01%) } . } . . impl<'a, T, R> InternIteratorElement for &'a T . where . T: Clone + 'a, . { . type Output = R; 41,485 ( 0.00%) fn intern_with, F: FnOnce(&[T]) -> R>(iter: I, f: F) -> Self::Output { . // This code isn't hot. 380 ( 0.00%) f(&iter.cloned().collect::>()) 33,530 ( 0.00%) } . } . . impl InternIteratorElement for Result { . type Output = Result; 3,665,437 ( 0.06%) 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. 2,484,628 ( 0.04%) Ok(match iter.size_hint() { . (0, Some(0)) => { . assert!(iter.next().is_none()); . f(&[]) . } . (1, Some(1)) => { 3,153 ( 0.00%) let t0 = iter.next().unwrap()?; 18 ( 0.00%) assert!(iter.next().is_none()); 81,299 ( 0.00%) f(&[t0]) . } . (2, Some(2)) => { 2,124 ( 0.00%) let t0 = iter.next().unwrap()?; 2,124 ( 0.00%) let t1 = iter.next().unwrap()?; 3,186 ( 0.00%) assert!(iter.next().is_none()); 196,482 ( 0.00%) f(&[t0, t1]) . } 146,657 ( 0.00%) _ => f(&iter.collect::, _>>()?), . }) 4,129,714 ( 0.07%) } . } . . // 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 { 330,322 ( 0.01%) 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 = 144 ( 0.00%) |tcx, id| tcx.stability().local_const_stability(id.expect_local()); 2 ( 0.00%) providers.lookup_deprecation_entry = 36,000 ( 0.00%) |tcx, id| tcx.stability().local_deprecation_entry(id.expect_local()); 2 ( 0.00%) providers.extern_mod_stmt_cnum = . |tcx, id| tcx.resolutions(()).extern_crate_map.get(&id).cloned(); 3 ( 0.00%) providers.output_filenames = |tcx, ()| tcx.output_filenames.clone(); 3 ( 0.00%) providers.features_query = |tcx, ()| tcx.sess.features_untracked(); 2 ( 0.00%) providers.is_panic_runtime = |tcx, cnum| { . assert_eq!(cnum, LOCAL_CRATE); . tcx.sess.contains_name(tcx.hir().krate_attrs(), sym::panic_runtime) . }; 2 ( 0.00%) providers.is_compiler_builtins = |tcx, cnum| { . assert_eq!(cnum, LOCAL_CRATE); . tcx.sess.contains_name(tcx.hir().krate_attrs(), sym::compiler_builtins) . }; 2 ( 0.00%) providers.has_panic_handler = |tcx, cnum| { 1 ( 0.00%) assert_eq!(cnum, LOCAL_CRATE); . // We want to check if the panic handler was defined in this crate 3 ( 0.00%) tcx.lang_items().panic_impl().map_or(false, |did| did.is_local()) . }; . } 5,658,656 ( 0.10%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/cell.rs -------------------------------------------------------------------------------- Ir -- line 246 ---------------------------------------- . // having an explicit negative impl is nice for documentation purposes . // and results in nicer error messages. . #[stable(feature = "rust1", since = "1.0.0")] . impl !Sync for Cell {} . . #[stable(feature = "rust1", since = "1.0.0")] . impl Clone for Cell { . #[inline] 470 ( 0.00%) fn clone(&self) -> Cell { 1,410 ( 0.00%) Cell::new(self.get()) 470 ( 0.00%) } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl Default for Cell { . /// Creates a `Cell`, with the `Default` value for T. . #[inline] . fn default() -> Cell { . Cell::new(Default::default()) -- line 264 ---------------------------------------- -- line 328 ---------------------------------------- . /// ``` . /// use std::cell::Cell; . /// . /// let c = Cell::new(5); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_cell_new", since = "1.24.0")] . #[inline] 11,815 ( 0.00%) pub const fn new(value: T) -> Cell { 12,366 ( 0.00%) Cell { value: UnsafeCell::new(value) } 10,615 ( 0.00%) } . . /// Sets the contained value. . /// . /// # Examples . /// . /// ``` . /// use std::cell::Cell; . /// . /// let c = Cell::new(5); . /// . /// c.set(10); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] 23,082 ( 0.00%) pub fn set(&self, val: T) { 156,793 ( 0.00%) let old = self.replace(val); 15,829 ( 0.00%) drop(old); 12,688 ( 0.00%) } . . /// Swaps the values of two `Cell`s. . /// Difference with `std::mem::swap` is that this function doesn't require `&mut` reference. . /// . /// # Examples . /// . /// ``` . /// use std::cell::Cell; -- line 364 ---------------------------------------- -- line 392 ---------------------------------------- . /// use std::cell::Cell; . /// . /// let cell = Cell::new(5); . /// assert_eq!(cell.get(), 5); . /// assert_eq!(cell.replace(10), 5); . /// assert_eq!(cell.get(), 10); . /// ``` . #[stable(feature = "move_cell", since = "1.17.0")] 43,115 ( 0.00%) pub fn replace(&self, val: T) -> T { . // SAFETY: This can cause data races if called from a separate thread, . // but `Cell` is `!Sync` so this won't happen. 79,827 ( 0.00%) mem::replace(unsafe { &mut *self.value.get() }, val) 18,502 ( 0.00%) } . . /// Unwraps the value. . /// . /// # Examples . /// . /// ``` . /// use std::cell::Cell; . /// -- line 412 ---------------------------------------- -- line 431 ---------------------------------------- . /// use std::cell::Cell; . /// . /// let c = Cell::new(5); . /// . /// let five = c.get(); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] 63,005 ( 0.00%) 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. 723,461 ( 0.01%) unsafe { *self.value.get() } 25,202 ( 0.00%) } . . /// Updates the contained value using a function and returns the new value. . /// . /// # Examples . /// . /// ``` . /// #![feature(cell_update)] . /// -- line 451 ---------------------------------------- -- line 548 ---------------------------------------- . /// . /// let c = Cell::new(5); . /// let five = c.take(); . /// . /// assert_eq!(five, 5); . /// assert_eq!(c.into_inner(), 0); . /// ``` . #[stable(feature = "move_cell", since = "1.17.0")] 3,597 ( 0.00%) pub fn take(&self) -> T { 12,818 ( 0.00%) self.replace(Default::default()) 3,544 ( 0.00%) } . } . . #[unstable(feature = "coerce_unsized", issue = "27732")] . impl, U> CoerceUnsized> for Cell {} . . impl Cell<[T]> { . /// Returns a `&[Cell]` from a `&Cell<[T]>` . /// -- line 566 ---------------------------------------- -- line 689 ---------------------------------------- . . #[inline(always)] . fn is_writing(x: BorrowFlag) -> bool { . x < UNUSED . } . . #[inline(always)] . fn is_reading(x: BorrowFlag) -> bool { 945,997 ( 0.02%) x > UNUSED . } . . impl RefCell { . /// Creates a new `RefCell` containing `value`. . /// . /// # Examples . /// . /// ``` . /// 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] 501 ( 0.00%) pub const fn new(value: T) -> RefCell { 168,213 ( 0.00%) RefCell { 130,610 ( 0.00%) value: UnsafeCell::new(value), 835 ( 0.00%) borrow: Cell::new(UNUSED), . #[cfg(feature = "debug_refcell")] . borrowed_at: Cell::new(None), . } 334 ( 0.00%) } . . /// Consumes the `RefCell`, returning the wrapped value. . /// . /// # Examples . /// . /// ``` . /// use std::cell::RefCell; . /// -- line 728 ---------------------------------------- -- 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. 7,100 ( 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] 12,163 ( 0.00%) pub fn borrow(&self) -> Ref<'_, T> { 48 ( 0.00%) self.try_borrow().expect("already mutably borrowed") 36,447 ( 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 877 ---------------------------------------- . /// { . /// let m = c.borrow(); . /// assert!(c.try_borrow().is_ok()); . /// } . /// ``` . #[stable(feature = "try_borrow", since = "1.13.0")] . #[inline] . #[cfg_attr(feature = "debug_refcell", track_caller)] 18 ( 0.00%) pub fn try_borrow(&self) -> Result, BorrowError> { 54 ( 0.00%) match BorrowRef::new(&self.borrow) { 12 ( 0.00%) Some(b) => { . #[cfg(feature = "debug_refcell")] . { . // `borrowed_at` is always the *first* active borrow . if b.borrow.get() == 1 { . self.borrowed_at.set(Some(crate::panic::Location::caller())); . } . } . . // SAFETY: `BorrowRef` ensures that there is only immutable access . // to the value while borrowed. 60 ( 0.00%) Ok(Ref { value: unsafe { &*self.value.get() }, borrow: b }) . } . None => Err(BorrowError { . // 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(), . }), . } 24 ( 0.00%) } . . /// Mutably borrows the wrapped value. . /// . /// 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. . /// . /// # Panics -- line 915 ---------------------------------------- -- 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] 53,401 ( 0.00%) pub fn borrow_mut(&self) -> RefMut<'_, T> { 5,752 ( 0.00%) self.try_borrow_mut().expect("already borrowed") 155,170 ( 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 966 ---------------------------------------- . /// assert!(c.try_borrow_mut().is_err()); . /// } . /// . /// assert!(c.try_borrow_mut().is_ok()); . /// ``` . #[stable(feature = "try_borrow", since = "1.13.0")] . #[inline] . #[cfg_attr(feature = "debug_refcell", track_caller)] 2,157 ( 0.00%) pub fn try_borrow_mut(&self) -> Result, BorrowMutError> { 6,471 ( 0.00%) match BorrowRefMut::new(&self.borrow) { 1,438 ( 0.00%) Some(b) => { . #[cfg(feature = "debug_refcell")] . { . self.borrowed_at.set(Some(crate::panic::Location::caller())); . } . . // SAFETY: `BorrowRef` guarantees unique access. 7,212 ( 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(), . }), . } 2,876 ( 0.00%) } . . /// Returns a raw pointer to the underlying data in this cell. . /// . /// # Examples . /// . /// ``` . /// use std::cell::RefCell; . /// -- line 1000 ---------------------------------------- -- line 1253 ---------------------------------------- . impl, U> CoerceUnsized> for RefCell {} . . struct BorrowRef<'b> { . borrow: &'b Cell, . } . . impl<'b> BorrowRef<'b> { . #[inline] 18 ( 0.00%) fn new(borrow: &'b Cell) -> Option> { 1,424,896 ( 0.02%) let b = borrow.get().wrapping_add(1); 816,139 ( 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) . None . } else { . // Incrementing borrow can result in a reading value (> 0) in these cases: . // 1. It was = 0, i.e. it wasn't borrowed, and we are taking the first read borrow . // 2. It was > 0 and < isize::MAX, i.e. there were read borrows, and isize . // is large enough to represent having one more read borrow 12 ( 0.00%) borrow.set(b); 18 ( 0.00%) Some(BorrowRef { borrow }) . } 18 ( 0.00%) } . } . . impl Drop for BorrowRef<'_> { . #[inline] 18 ( 0.00%) fn drop(&mut self) { 629,669 ( 0.01%) let borrow = self.borrow.get(); . debug_assert!(is_reading(borrow)); 1,257,151 ( 0.02%) self.borrow.set(borrow - 1); 12 ( 0.00%) } . } . . impl Clone for BorrowRef<'_> { . #[inline] . fn clone(&self) -> Self { . // Since this Ref exists, we know the borrow flag . // is a reading borrow. . let borrow = self.borrow.get(); -- line 1298 ---------------------------------------- -- line 1320 ---------------------------------------- . borrow: BorrowRef<'b>, . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl Deref for Ref<'_, T> { . type Target = T; . . #[inline] 12 ( 0.00%) fn deref(&self) -> &T { 6 ( 0.00%) self.value 12 ( 0.00%) } . } . . impl<'b, T: ?Sized> Ref<'b, T> { . /// Copies a `Ref`. . /// . /// The `RefCell` is already immutably borrowed, so this cannot fail. . /// . /// This is an associated function that needs to be used as -- line 1338 ---------------------------------------- -- line 1644 ---------------------------------------- . } . . struct BorrowRefMut<'b> { . borrow: &'b Cell, . } . . impl Drop for BorrowRefMut<'_> { . #[inline] 2,157 ( 0.00%) fn drop(&mut self) { 12,756,839 ( 0.22%) let borrow = self.borrow.get(); . debug_assert!(is_writing(borrow)); 26,094,662 ( 0.45%) self.borrow.set(borrow + 1); 1,438 ( 0.00%) } . } . . impl<'b> BorrowRefMut<'b> { . #[inline] 2,157 ( 0.00%) 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. 27,059,699 ( 0.47%) match borrow.get() { . UNUSED => { 2,157 ( 0.00%) borrow.set(UNUSED - 1); 2,876 ( 0.00%) Some(BorrowRefMut { borrow }) . } . _ => None, . } 2,157 ( 0.00%) } . . // Clones a `BorrowRefMut`. . // . // This is only valid if each `BorrowRefMut` is used to track a mutable . // reference to a distinct, nonoverlapping range of the original object. . // This isn't in a Clone impl so that code doesn't call this implicitly. . #[inline] . fn clone(&self) -> BorrowRefMut<'b> { -- line 1681 ---------------------------------------- -- line 1710 ---------------------------------------- . fn deref(&self) -> &T { . self.value . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl DerefMut for RefMut<'_, T> { . #[inline] 1,438 ( 0.00%) fn deref_mut(&mut self) -> &mut T { 1,679 ( 0.00%) self.value 1,438 ( 0.00%) } . } . . #[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> { . fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { -- line 1728 ---------------------------------------- -- line 1863 ---------------------------------------- . /// use std::cell::UnsafeCell; . /// . /// let uc = UnsafeCell::new(5); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_stable(feature = "const_unsafe_cell_new", since = "1.32.0")] . #[inline(always)] . pub const fn new(value: T) -> UnsafeCell { 7,495 ( 0.00%) UnsafeCell { value } 7,528 ( 0.00%) } . . /// Unwraps the value. . /// . /// # Examples . /// . /// ``` . /// use std::cell::UnsafeCell; . /// -- line 1880 ---------------------------------------- -- 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! 5,757,948 ( 0.10%) 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 ---------------------------------------- 18,814,475 ( 0.33%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/canonical/canonicalizer.rs -------------------------------------------------------------------------------- Ir -- line 39 ---------------------------------------- . pub fn canonicalize_query( . &self, . value: V, . query_state: &mut OriginalQueryValues<'tcx>, . ) -> Canonicalized<'tcx, V> . where . V: TypeFoldable<'tcx>, . { 37,550 ( 0.00%) self.tcx.sess.perf_stats.queries_canonicalized.fetch_add(1, Ordering::Relaxed); . 185,810 ( 0.00%) Canonicalizer::canonicalize(value, self, self.tcx, &CanonicalizeAllFreeRegions, query_state) . } . . /// Canonicalizes a query *response* `V`. When we canonicalize a . /// query response, we only canonicalize unbound inference . /// variables, and we leave other free regions alone. So, . /// continuing with the example from `canonicalize_query`, if . /// there was an input query `T: Trait<'static>`, it would have . /// been canonicalized to -- line 57 ---------------------------------------- -- line 69 ---------------------------------------- . /// things) includes a mapping to `'?0 := 'static`. When . /// canonicalizing this query result R, we would leave this . /// reference to `'static` alone. . /// . /// To get a good understanding of what is happening here, check . /// out the [chapter in the rustc dev guide][c]. . /// . /// [c]: https://rust-lang.github.io/chalk/book/canonical_queries/canonicalization.html#canonicalizing-the-query-result 855 ( 0.00%) pub fn canonicalize_response(&self, value: V) -> Canonicalized<'tcx, V> . where . V: TypeFoldable<'tcx>, . { 32,434 ( 0.00%) let mut query_state = OriginalQueryValues::default(); 113,519 ( 0.00%) Canonicalizer::canonicalize( 194,676 ( 0.00%) value, . self, 16,217 ( 0.00%) self.tcx, . &CanonicalizeQueryResponse, . &mut query_state, . ) 665 ( 0.00%) } . 26,478 ( 0.00%) pub fn canonicalize_user_type_annotation(&self, value: V) -> Canonicalized<'tcx, V> . where . V: TypeFoldable<'tcx>, . { 7,358 ( 0.00%) let mut query_state = OriginalQueryValues::default(); 25,753 ( 0.00%) Canonicalizer::canonicalize( 21,337 ( 0.00%) value, . self, 3,679 ( 0.00%) self.tcx, . &CanonicalizeUserTypeAnnotation, . &mut query_state, . ) 20,594 ( 0.00%) } . . /// A variant of `canonicalize_query` that does not . /// canonicalize `'static`. This is useful when . /// the query implementation can perform more efficient . /// handling of `'static` regions (e.g. trait evaluation). 36,505 ( 0.00%) pub fn canonicalize_query_keep_static( . &self, . value: V, . query_state: &mut OriginalQueryValues<'tcx>, . ) -> Canonicalized<'tcx, V> . where . V: TypeFoldable<'tcx>, . { 110,800 ( 0.00%) self.tcx.sess.perf_stats.queries_canonicalized.fetch_add(1, Ordering::Relaxed); . 493,773 ( 0.01%) Canonicalizer::canonicalize( 41,666 ( 0.00%) value, . self, 55,400 ( 0.00%) self.tcx, . &CanonicalizeFreeRegionsOtherThanStatic, . query_state, . ) 36,505 ( 0.00%) } . } . . /// Controls how we canonicalize "free regions" that are not inference . /// variables. This depends on what we are canonicalizing *for* -- . /// e.g., if we are canonicalizing to create a query, we want to . /// replace those with inference variables, since we want to make a . /// maximally general query. But if we are canonicalizing a *query . /// response*, then we don't typically replace free regions, as they -- line 134 ---------------------------------------- -- line 141 ---------------------------------------- . ) -> ty::Region<'tcx>; . . fn any(&self) -> bool; . } . . struct CanonicalizeQueryResponse; . . impl CanonicalizeRegionMode for CanonicalizeQueryResponse { 267,960 ( 0.00%) fn canonicalize_free_region<'tcx>( . &self, . canonicalizer: &mut Canonicalizer<'_, 'tcx>, . r: ty::Region<'tcx>, . ) -> ty::Region<'tcx> { 160,776 ( 0.00%) match r { . ty::ReFree(_) . | ty::ReErased . | ty::ReStatic . | ty::ReEmpty(ty::UniverseIndex::ROOT) . | ty::ReEarlyBound(..) => r, . . ty::RePlaceholder(placeholder) => canonicalizer.canonical_var_for_region( . CanonicalVarInfo { kind: CanonicalVarKind::PlaceholderRegion(*placeholder) }, . r, . ), . . ty::ReVar(vid) => { 53,575 ( 0.00%) let universe = canonicalizer.region_var_universe(*vid); . canonicalizer.canonical_var_for_region( . CanonicalVarInfo { kind: CanonicalVarKind::Region(universe) }, . r, . ) . } . . ty::ReEmpty(ui) => { . bug!("canonicalizing 'empty in universe {:?}", ui) // FIXME -- line 175 ---------------------------------------- -- line 188 ---------------------------------------- . tcx.sess.delay_span_bug( . rustc_span::DUMMY_SP, . &format!("unexpected region in query response: `{:?}`", r), . ); . }); . r . } . } 267,960 ( 0.00%) } . . fn any(&self) -> bool { . false . } . } . . struct CanonicalizeUserTypeAnnotation; . . impl CanonicalizeRegionMode for CanonicalizeUserTypeAnnotation { 4,407 ( 0.00%) fn canonicalize_free_region<'tcx>( . &self, . canonicalizer: &mut Canonicalizer<'_, 'tcx>, . r: ty::Region<'tcx>, . ) -> ty::Region<'tcx> { 4,407 ( 0.00%) match r { . ty::ReEarlyBound(_) | ty::ReFree(_) | ty::ReErased | ty::ReStatic => r, . ty::ReVar(_) => canonicalizer.canonical_var_for_region_in_root_universe(r), . _ => { . // We only expect region names that the user can type. . bug!("unexpected region in query response: `{:?}`", r) . } . } 4,407 ( 0.00%) } . . fn any(&self) -> bool { . false 39,792 ( 0.00%) } . } . . struct CanonicalizeAllFreeRegions; . . impl CanonicalizeRegionMode for CanonicalizeAllFreeRegions { 223,760 ( 0.00%) fn canonicalize_free_region<'tcx>( . &self, . canonicalizer: &mut Canonicalizer<'_, 'tcx>, . r: ty::Region<'tcx>, . ) -> ty::Region<'tcx> { . canonicalizer.canonical_var_for_region_in_root_universe(r) 167,820 ( 0.00%) } . . fn any(&self) -> bool { . true 148,350 ( 0.00%) } . } . . struct CanonicalizeFreeRegionsOtherThanStatic; . . impl CanonicalizeRegionMode for CanonicalizeFreeRegionsOtherThanStatic { 693,603 ( 0.01%) fn canonicalize_free_region<'tcx>( . &self, . canonicalizer: &mut Canonicalizer<'_, 'tcx>, . r: ty::Region<'tcx>, . ) -> ty::Region<'tcx> { 462,402 ( 0.01%) if let ty::ReStatic = r { . r . } else { . canonicalizer.canonical_var_for_region_in_root_universe(r) . } 693,603 ( 0.01%) } . . fn any(&self) -> bool { . true . } . } . . struct Canonicalizer<'cx, 'tcx> { . infcx: &'cx InferCtxt<'cx, 'tcx>, -- line 263 ---------------------------------------- -- line 270 ---------------------------------------- . canonicalize_region_mode: &'cx dyn CanonicalizeRegionMode, . needs_canonical_flags: TypeFlags, . . binder_index: ty::DebruijnIndex, . } . . impl<'cx, 'tcx> TypeFolder<'tcx> for Canonicalizer<'cx, 'tcx> { . fn tcx<'b>(&'b self) -> TyCtxt<'tcx> { 1,576,721 ( 0.03%) self.tcx 1,142,763 ( 0.02%) } . . fn fold_binder(&mut self, t: ty::Binder<'tcx, T>) -> ty::Binder<'tcx, T> . where . T: TypeFoldable<'tcx>, . { 2,241,859 ( 0.04%) self.binder_index.shift_in(1); 4,070,665 ( 0.07%) let t = t.super_fold_with(self); 2,215,398 ( 0.04%) self.binder_index.shift_out(1); . t . } . 1,369,024 ( 0.02%) fn fold_region(&mut self, r: ty::Region<'tcx>) -> ty::Region<'tcx> { 2,053,536 ( 0.04%) match *r { 54 ( 0.00%) ty::ReLateBound(index, ..) => { 54 ( 0.00%) if index >= self.binder_index { . bug!("escaping late-bound region during canonicalization"); . } else { . r . } . } . . ty::ReVar(vid) => { 126,835 ( 0.00%) let resolved_vid = self . .infcx . .inner . .borrow_mut() . .unwrap_region_constraints() . .opportunistic_resolve_var(vid); . debug!( . "canonical: region var found with vid {:?}, \ . opportunistically resolved to {:?}", . vid, r . ); 507,340 ( 0.01%) let r = self.tcx.reuse_or_mk_region(r, ty::ReVar(resolved_vid)); 761,010 ( 0.01%) self.canonicalize_region_mode.canonicalize_free_region(self, r) . } . . ty::ReStatic . | ty::ReEarlyBound(..) . | ty::ReFree(_) . | ty::ReEmpty(_) . | ty::RePlaceholder(..) 2,153,670 ( 0.04%) | ty::ReErased => self.canonicalize_region_mode.canonicalize_free_region(self, r), . } 761,334 ( 0.01%) } . 7,363,602 ( 0.13%) fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> { 6,178,322 ( 0.11%) match *t.kind() { 11,759 ( 0.00%) ty::Infer(ty::TyVar(vid)) => { . debug!("canonical: type var found with vid {:?}", vid); 47,036 ( 0.00%) match self.infcx.probe_ty_var(vid) { . // `t` could be a float / int variable; canonicalize that instead. . Ok(t) => { . debug!("(resolved to {:?})", t); . self.fold_ty(t) . } . . // `TyVar(vid)` is unresolved, track its universe index in the canonicalized . // result. . Err(mut ui) => { . // FIXME: perf problem described in #55921. . ui = ty::UniverseIndex::ROOT; . self.canonicalize_ty_var( 10,418 ( 0.00%) CanonicalVarInfo { . kind: CanonicalVarKind::Ty(CanonicalTyVarKind::General(ui)), . }, . t, . ) . } . } . } . -- line 351 ---------------------------------------- -- line 395 ---------------------------------------- . | ty::FnPtr(_) . | ty::Dynamic(..) . | ty::Never . | ty::Tuple(..) . | ty::Projection(..) . | ty::Foreign(..) . | ty::Param(..) . | ty::Opaque(..) => { 2,433,696 ( 0.04%) if t.flags().intersects(self.needs_canonical_flags) { 508,956 ( 0.01%) t.super_fold_with(self) . } else { . t . } . } . } 6,927,354 ( 0.12%) } . 1,708 ( 0.00%) fn fold_const(&mut self, ct: &'tcx ty::Const<'tcx>) -> &'tcx ty::Const<'tcx> { 1,701 ( 0.00%) match ct.val { 7 ( 0.00%) ty::ConstKind::Infer(InferConst::Var(vid)) => { . debug!("canonical: const var found with vid {:?}", vid); 28 ( 0.00%) match self.infcx.probe_const_var(vid) { . Ok(c) => { . debug!("(resolved to {:?})", c); . return self.fold_const(c); . } . . // `ConstVar(vid)` is unresolved, track its universe index in the . // canonicalized result . Err(mut ui) => { . // FIXME: perf problem described in #55921. . ui = ty::UniverseIndex::ROOT; . return self.canonicalize_const_var( 21 ( 0.00%) CanonicalVarInfo { kind: CanonicalVarKind::Const(ui, ct.ty) }, . ct, . ); . } . } . } . ty::ConstKind::Infer(InferConst::Fresh(_)) => { . bug!("encountered a fresh const during canonicalization") . } -- line 436 ---------------------------------------- -- line 445 ---------------------------------------- . return self.canonicalize_const_var( . CanonicalVarInfo { kind: CanonicalVarKind::PlaceholderConst(placeholder) }, . ct, . ); . } . _ => {} . } . 474 ( 0.00%) let flags = FlagComputation::for_const(ct); 237 ( 0.00%) if flags.intersects(self.needs_canonical_flags) { ct.super_fold_with(self) } else { ct } 1,464 ( 0.00%) } . } . . impl<'cx, 'tcx> Canonicalizer<'cx, 'tcx> { . /// The main `canonicalize` method, shared impl of . /// `canonicalize_query` and `canonicalize_response`. 1,278,380 ( 0.02%) fn canonicalize( . value: V, . infcx: &InferCtxt<'_, 'tcx>, . tcx: TyCtxt<'tcx>, . canonicalize_region_mode: &dyn CanonicalizeRegionMode, . query_state: &mut OriginalQueryValues<'tcx>, . ) -> Canonicalized<'tcx, V> . where . V: TypeFoldable<'tcx>, . { 573,097 ( 0.01%) let needs_canonical_flags = if canonicalize_region_mode.any() { . TypeFlags::NEEDS_INFER | . TypeFlags::HAS_FREE_REGIONS | // `HAS_RE_PLACEHOLDER` implies `HAS_FREE_REGIONS` . TypeFlags::HAS_TY_PLACEHOLDER | . TypeFlags::HAS_CT_PLACEHOLDER . } else { . TypeFlags::NEEDS_INFER . | TypeFlags::HAS_RE_PLACEHOLDER . | TypeFlags::HAS_TY_PLACEHOLDER . | TypeFlags::HAS_CT_PLACEHOLDER . }; . . // Fast path: nothing that needs to be canonicalized. 102,316 ( 0.00%) if !value.has_type_flags(needs_canonical_flags) { . let canon_value = Canonical { . max_universe: ty::UniverseIndex::ROOT, . variables: List::empty(), 49,834 ( 0.00%) value, . }; 119,729 ( 0.00%) return canon_value; . } . 727,989 ( 0.01%) let mut canonicalizer = Canonicalizer { . infcx, . tcx, . canonicalize_region_mode, . needs_canonical_flags, . variables: SmallVec::new(), . query_state, . indices: FxHashMap::default(), . binder_index: ty::INNERMOST, . }; 301,131 ( 0.01%) let out_value = value.fold_with(&mut canonicalizer); . . // Once we have canonicalized `out_value`, it should not . // contain anything that ties it to this inference context . // anymore, so it should live in the global arena. . debug_assert!(!out_value.needs_infer()); . 131,373 ( 0.00%) let canonical_variables = tcx.intern_canonical_var_infos(&canonicalizer.variables); . . let max_universe = canonical_variables . .iter() 427,344 ( 0.01%) .map(|cvar| cvar.universe()) . .max() . .unwrap_or(ty::UniverseIndex::ROOT); . 454,456 ( 0.01%) Canonical { max_universe, variables: canonical_variables, value: out_value } 858,568 ( 0.01%) } . . /// Creates a canonical variable replacing `kind` from the input, . /// or returns an existing variable if `kind` has already been . /// seen. `kind` is expected to be an unbound variable (or . /// potentially a free region). 3,525,270 ( 0.06%) fn canonical_var(&mut self, info: CanonicalVarInfo<'tcx>, kind: GenericArg<'tcx>) -> BoundVar { 705,054 ( 0.01%) let Canonicalizer { variables, query_state, indices, .. } = self; . 705,054 ( 0.01%) let var_values = &mut query_state.var_values; . . // This code is hot. `variables` and `var_values` are usually small . // (fewer than 8 elements ~95% of the time). They are SmallVec's to . // avoid allocations in those cases. We also don't use `indices` to . // determine if a kind has been seen before until the limit of 8 has . // been exceeded, to also avoid allocations for `indices`. 705,054 ( 0.01%) if !var_values.spilled() { . // `var_values` is stack-allocated. `indices` isn't used yet. Do a . // direct linear search of `var_values`. . if let Some(idx) = var_values.iter().position(|&k| k == kind) { . // `kind` is already present in `var_values`. . BoundVar::new(idx) . } else { . // `kind` isn't present in `var_values`. Append it. Likewise . // for `info` and `variables`. . variables.push(info); . var_values.push(kind); 583,425 ( 0.01%) assert_eq!(variables.len(), var_values.len()); . . // If `var_values` has become big enough to be heap-allocated, . // fill up `indices` to facilitate subsequent lookups. 116,685 ( 0.00%) if var_values.spilled() { 46 ( 0.00%) assert!(indices.is_empty()); 184 ( 0.00%) *indices = var_values . .iter() . .enumerate() . .map(|(i, &kind)| (kind, BoundVar::new(i))) . .collect(); . } . // The cv is the index of the appended element. 233,370 ( 0.00%) BoundVar::new(var_values.len() - 1) . } . } else { . // `var_values` is large. Do a hashmap search via `indices`. 86 ( 0.00%) *indices.entry(kind).or_insert_with(|| { . variables.push(info); . var_values.push(kind); 224 ( 0.00%) assert_eq!(variables.len(), var_values.len()); 112 ( 0.00%) BoundVar::new(variables.len() - 1) . }) . } 3,172,743 ( 0.05%) } . . /// Shorthand helper that creates a canonical region variable for . /// `r` (always in the root universe). The reason that we always . /// put these variables into the root universe is because this . /// method is used during **query construction:** in that case, we . /// are taking all the regions and just putting them into the most . /// generic context we can. This may generate solutions that don't . /// fit (e.g., that equate some region variable with a placeholder -- line 578 ---------------------------------------- -- line 599 ---------------------------------------- . . /// Creates a canonical variable (with the given `info`) . /// representing the region `r`; return a region referencing it. . fn canonical_var_for_region( . &mut self, . info: CanonicalVarInfo<'tcx>, . r: ty::Region<'tcx>, . ) -> ty::Region<'tcx> { 1,314,829 ( 0.02%) let var = self.canonical_var(info, r.into()); . let br = ty::BoundRegion { var, kind: ty::BrAnon(var.as_u32()) }; 288,526 ( 0.00%) let region = ty::ReLateBound(self.binder_index, br); 2,019,682 ( 0.03%) self.tcx().mk_region(region) . } . . /// Given a type variable `ty_var` of the given kind, first check . /// if `ty_var` is bound to anything; if so, canonicalize . /// *that*. Otherwise, create a new canonical variable for . /// `ty_var`. 83,352 ( 0.00%) fn canonicalize_ty_var(&mut self, info: CanonicalVarInfo<'tcx>, ty_var: Ty<'tcx>) -> Ty<'tcx> { 10,419 ( 0.00%) let infcx = self.infcx; . let bound_to = infcx.shallow_resolve(ty_var); 10,419 ( 0.00%) if bound_to != ty_var { . self.fold_ty(bound_to) . } else { 72,933 ( 0.00%) let var = self.canonical_var(info, ty_var.into()); 10,419 ( 0.00%) self.tcx().mk_ty(ty::Bound(self.binder_index, var.into())) . } 62,514 ( 0.00%) } . . /// Given a type variable `const_var` of the given kind, first check . /// if `const_var` is bound to anything; if so, canonicalize . /// *that*. Otherwise, create a new canonical variable for . /// `const_var`. 63 ( 0.00%) fn canonicalize_const_var( . &mut self, . info: CanonicalVarInfo<'tcx>, . const_var: &'tcx ty::Const<'tcx>, . ) -> &'tcx ty::Const<'tcx> { 7 ( 0.00%) let infcx = self.infcx; . let bound_to = infcx.shallow_resolve(const_var); . if bound_to != const_var { . self.fold_const(bound_to) . } else { 56 ( 0.00%) let var = self.canonical_var(info, const_var.into()); 49 ( 0.00%) self.tcx().mk_const(ty::Const { 7 ( 0.00%) val: ty::ConstKind::Bound(self.binder_index, var), 21 ( 0.00%) ty: self.fold_ty(const_var.ty), . }) . } 49 ( 0.00%) } . } 2,980,696 ( 0.05%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/iter/adapters/zip.rs -------------------------------------------------------------------------------- Ir -- line 14 ---------------------------------------- . a: A, . b: B, . // index, len and a_len are only used by the specialized version of zip . index: usize, . len: usize, . a_len: usize, . } . impl Zip { 2,212 ( 0.00%) pub(in crate::iter) fn new(a: A, b: B) -> Zip { 324 ( 0.00%) ZipImpl::new(a, b) 632 ( 0.00%) } . fn super_nth(&mut self, mut n: usize) -> Option<(A::Item, B::Item)> { . while let Some(x) = Iterator::next(self) { . if n == 0 { . return Some(x); . } . n -= 1; . } . None -- line 32 ---------------------------------------- -- line 63 ---------------------------------------- . /// assert!(iter.next().is_none()); . /// ``` . #[stable(feature = "iter_zip", since = "1.59.0")] . pub fn zip(a: A, b: B) -> Zip . where . A: IntoIterator, . B: IntoIterator, . { 68,275 ( 0.00%) ZipImpl::new(a.into_iter(), b.into_iter()) . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl Iterator for Zip . where . A: Iterator, . B: Iterator, . { . type Item = (A::Item, B::Item); . . #[inline] 642 ( 0.00%) fn next(&mut self) -> Option { 963 ( 0.00%) ZipImpl::next(self) 642 ( 0.00%) } . . #[inline] . fn size_hint(&self) -> (usize, Option) { . ZipImpl::size_hint(self) . } . . #[inline] . fn nth(&mut self, n: usize) -> Option { -- line 93 ---------------------------------------- -- line 135 ---------------------------------------- . where . Self: Iterator + TrustedRandomAccessNoCoerce; . } . . // Work around limitations of specialization, requiring `default` impls to be repeated . // in intermediary impls. . macro_rules! zip_impl_general_defaults { . () => { 1,896 ( 0.00%) default fn new(a: A, b: B) -> Self { 2,228 ( 0.00%) Zip { . a, . b, . index: 0, // unused . len: 0, // unused . a_len: 0, // unused . } 632 ( 0.00%) } . . #[inline] 963 ( 0.00%) default fn next(&mut self) -> Option<(A::Item, B::Item)> { 163,774 ( 0.00%) let x = self.a.next()?; 116,712 ( 0.00%) let y = self.b.next()?; 6,840 ( 0.00%) Some((x, y)) 14,978 ( 0.00%) } . . #[inline] . default fn nth(&mut self, n: usize) -> Option { . self.super_nth(n) . } . . #[inline] . default fn next_back(&mut self) -> Option<(A::Item, B::Item)> -- line 166 ---------------------------------------- -- line 203 ---------------------------------------- . B: Iterator, . { . type Item = (A::Item, B::Item); . . zip_impl_general_defaults! {} . . #[inline] . default fn size_hint(&self) -> (usize, Option) { 6 ( 0.00%) let (a_lower, a_upper) = self.a.size_hint(); 10 ( 0.00%) let (b_lower, b_upper) = self.b.size_hint(); . . let lower = cmp::min(a_lower, b_lower); . . let upper = match (a_upper, b_upper) { . (Some(x), Some(y)) => Some(cmp::min(x, y)), . (Some(x), None) => Some(x), . (None, Some(y)) => Some(y), . (None, None) => None, -- line 220 ---------------------------------------- -- line 236 ---------------------------------------- . where . A: TrustedRandomAccessNoCoerce + Iterator, . B: TrustedRandomAccessNoCoerce + Iterator, . { . zip_impl_general_defaults! {} . . #[inline] . default fn size_hint(&self) -> (usize, Option) { 2,094 ( 0.00%) let size = cmp::min(self.a.size(), self.b.size()); . (size, Some(size)) . } . . #[inline] . unsafe fn get_unchecked(&mut self, idx: usize) -> ::Item { 376 ( 0.00%) let idx = self.index + idx; . // SAFETY: the caller must uphold the contract for . // `Iterator::__iterator_get_unchecked`. . unsafe { (self.a.__iterator_get_unchecked(idx), self.b.__iterator_get_unchecked(idx)) } . } . } . . #[doc(hidden)] . impl ZipImpl for Zip -- line 258 ---------------------------------------- -- line 263 ---------------------------------------- . fn new(a: A, b: B) -> Self { . let a_len = a.size(); . let len = cmp::min(a_len, b.size()); . Zip { a, b, index: 0, len, a_len } . } . . #[inline] . fn next(&mut self) -> Option<(A::Item, B::Item)> { 18,654,046 ( 0.32%) if self.index < self.len { . let i = self.index; . // since get_unchecked executes code which can panic we increment the counters beforehand . // so that the same index won't be accessed twice, as required by TrustedRandomAccess 4,911,658 ( 0.08%) self.index += 1; . // SAFETY: `i` is smaller than `self.len`, thus smaller than `self.a.len()` and `self.b.len()` . unsafe { 97 ( 0.00%) Some((self.a.__iterator_get_unchecked(i), self.b.__iterator_get_unchecked(i))) . } 32 ( 0.00%) } else if A::MAY_HAVE_SIDE_EFFECT && self.index < self.a_len { . let i = self.index; . // as above, increment before executing code that may panic . self.index += 1; . self.len += 1; . // match the base implementation's potential side effects . // SAFETY: we just checked that `i` < `self.a.len()` . unsafe { . self.a.__iterator_get_unchecked(i); -- line 288 ---------------------------------------- -- line 290 ---------------------------------------- . None . } else { . None . } . } . . #[inline] . fn size_hint(&self) -> (usize, Option) { 1,440,999 ( 0.02%) let len = self.len - self.index; . (len, Some(len)) . } . . #[inline] . fn nth(&mut self, n: usize) -> Option { . let delta = cmp::min(n, self.len - self.index); . let end = self.index + delta; . while self.index < end { -- line 306 ---------------------------------------- -- line 535 ---------------------------------------- . #[unstable(feature = "trusted_random_access", issue = "none")] . #[rustc_specialization_trait] . pub unsafe trait TrustedRandomAccessNoCoerce: Sized { . // Convenience method. . fn size(&self) -> usize . where . Self: Iterator, . { 4,378 ( 0.00%) self.size_hint().0 . } . /// `true` if getting an iterator element may have side effects. . /// Remember to take inner iterators into account. . const MAY_HAVE_SIDE_EFFECT: bool; . } . . /// Like `Iterator::__iterator_get_unchecked`, but doesn't require the compiler to . /// know that `U: TrustedRandomAccess`. -- line 551 ---------------------------------------- -- line 555 ---------------------------------------- . /// Same requirements calling `get_unchecked` directly. . #[doc(hidden)] . pub(in crate::iter::adapters) unsafe fn try_get_unchecked(it: &mut I, idx: usize) -> I::Item . where . I: Iterator, . { . // SAFETY: the caller must uphold the contract for . // `Iterator::__iterator_get_unchecked`. 38,576 ( 0.00%) unsafe { it.try_get_unchecked(idx) } . } . . unsafe trait SpecTrustedRandomAccess: Iterator { . /// If `Self: TrustedRandomAccess`, it must be safe to call . /// `Iterator::__iterator_get_unchecked(self, index)`. . unsafe fn try_get_unchecked(&mut self, index: usize) -> Self::Item; . } . -- line 571 ---------------------------------------- 2,610,007 ( 0.05%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/relate.rs -------------------------------------------------------------------------------- Ir -- line 28 ---------------------------------------- . . /// Returns a static string we can use for printouts. . fn tag(&self) -> &'static str; . . /// Returns `true` if the value `a` is the "expected" type in the . /// relation. Just affects error messages. . fn a_is_expected(&self) -> bool; . 7,256 ( 0.00%) fn with_cause(&mut self, _cause: Cause, f: F) -> R . where . F: FnOnce(&mut Self) -> R, . { . f(self) 6,396 ( 0.00%) } . . /// Generic relation routine suitable for most anything. 565,650 ( 0.01%) fn relate>(&mut self, a: T, b: T) -> RelateResult<'tcx, T> { 4,054,658 ( 0.07%) Relate::relate(self, a, b) 465,912 ( 0.01%) } . . /// Relate the two substitutions for the given item. The default . /// is to look up the variance for the item and proceed . /// accordingly. 145,480 ( 0.00%) fn relate_item_substs( . &mut self, . item_def_id: DefId, . a_subst: SubstsRef<'tcx>, . b_subst: SubstsRef<'tcx>, . ) -> RelateResult<'tcx, SubstsRef<'tcx>> { . debug!( . "relate_item_substs(item_def_id={:?}, a_subst={:?}, b_subst={:?})", . item_def_id, a_subst, b_subst . ); . . let tcx = self.tcx(); . let opt_variances = tcx.variances_of(item_def_id); 58,192 ( 0.00%) relate_substs(self, Some((item_def_id, opt_variances)), a_subst, b_subst) 130,932 ( 0.00%) } . . /// Switch variance for the purpose of relating `a` and `b`. . fn relate_with_variance>( . &mut self, . variance: ty::Variance, . info: ty::VarianceDiagInfo<'tcx>, . a: T, . b: T, -- line 73 ---------------------------------------- -- line 108 ---------------------------------------- . a: Self, . b: Self, . ) -> RelateResult<'tcx, Self>; . } . . /////////////////////////////////////////////////////////////////////////// . // Relate impls . 90,723 ( 0.00%) pub fn relate_type_and_mut<'tcx, R: TypeRelation<'tcx>>( . relation: &mut R, . a: ty::TypeAndMut<'tcx>, . b: ty::TypeAndMut<'tcx>, . base_ty: Ty<'tcx>, . ) -> RelateResult<'tcx, ty::TypeAndMut<'tcx>> { . debug!("{}.mts({:?}, {:?})", relation.tag(), a, b); 18,201 ( 0.00%) if a.mutbl != b.mutbl { 1,042 ( 0.00%) Err(TypeError::Mutability) . } else { . let mutbl = a.mutbl; . let (variance, info) = match mutbl { . ast::Mutability::Not => (ty::Covariant, ty::VarianceDiagInfo::None), . ast::Mutability::Mut => { . (ty::Invariant, ty::VarianceDiagInfo::Invariant { ty: base_ty, param_index: 0 }) . } . }; 6,175 ( 0.00%) let ty = relation.relate_with_variance(variance, info, a.ty, b.ty)?; 41,123 ( 0.00%) Ok(ty::TypeAndMut { ty, mutbl }) . } 90,997 ( 0.00%) } . 10 ( 0.00%) pub fn relate_substs<'tcx, R: TypeRelation<'tcx>>( . relation: &mut R, . variances: Option<(DefId, &[ty::Variance])>, . a_subst: SubstsRef<'tcx>, . b_subst: SubstsRef<'tcx>, . ) -> RelateResult<'tcx, SubstsRef<'tcx>> { 1,818,858 ( 0.03%) let tcx = relation.tcx(); 446,374 ( 0.01%) let mut cached_ty = None; . . let params = iter::zip(a_subst, b_subst).enumerate().map(|(i, (a, b))| { 3,087,433 ( 0.05%) let (variance, variance_info) = match variances { 104,084 ( 0.00%) Some((ty_def_id, variances)) => { 156,126 ( 0.00%) let variance = variances[i]; 52,042 ( 0.00%) let variance_info = if variance == ty::Invariant { . let ty = 6,882 ( 0.00%) cached_ty.get_or_insert_with(|| tcx.type_of(ty_def_id).subst(tcx, a_subst)); . ty::VarianceDiagInfo::Invariant { ty, param_index: i.try_into().unwrap() } . } else { . ty::VarianceDiagInfo::default() . }; . (variance, variance_info) . } . None => (ty::Invariant, ty::VarianceDiagInfo::default()), . }; 671,764 ( 0.01%) relation.relate_with_variance(variance, variance_info, a, b) . }); . . tcx.mk_substs(params) 12 ( 0.00%) } . . impl<'tcx> Relate<'tcx> for ty::FnSig<'tcx> { 18,356 ( 0.00%) fn relate>( . relation: &mut R, . a: ty::FnSig<'tcx>, . b: ty::FnSig<'tcx>, . ) -> RelateResult<'tcx, ty::FnSig<'tcx>> { . let tcx = relation.tcx(); . 8,472 ( 0.00%) if a.c_variadic != b.c_variadic { . return Err(TypeError::VariadicMismatch(expected_found( . relation, . a.c_variadic, . b.c_variadic, . ))); . } 6,410 ( 0.00%) let unsafety = relation.relate(a.unsafety, b.unsafety)?; . let abi = relation.relate(a.abi, b.abi)?; . 12,327 ( 0.00%) if a.inputs().len() != b.inputs().len() { . return Err(TypeError::ArgCount); . } . 12,708 ( 0.00%) let inputs_and_output = iter::zip(a.inputs(), b.inputs()) 5,642 ( 0.00%) .map(|(&a, &b)| ((a, b), false)) 11,296 ( 0.00%) .chain(iter::once(((a.output(), b.output()), true))) 2,470 ( 0.00%) .map(|((a, b), is_output)| { 2,470 ( 0.00%) if is_output { 1,076 ( 0.00%) relation.relate(a, b) . } else { . relation.relate_with_variance( . ty::Contravariant, . ty::VarianceDiagInfo::default(), . a, . b, . ) . } . }) . .enumerate() 6,994 ( 0.00%) .map(|(i, r)| match r { . Err(TypeError::Sorts(exp_found) | TypeError::ArgumentSorts(exp_found, _)) => { . Err(TypeError::ArgumentSorts(exp_found, i)) . } . Err(TypeError::Mutability | TypeError::ArgumentMutability(_)) => { . Err(TypeError::ArgumentMutability(i)) . } 13,716 ( 0.00%) r => r, . }); 10,265 ( 0.00%) Ok(ty::FnSig { . inputs_and_output: tcx.mk_type_list(inputs_and_output)?, 1,412 ( 0.00%) c_variadic: a.c_variadic, . unsafety, . abi, . }) 12,708 ( 0.00%) } . } . . impl<'tcx> Relate<'tcx> for ty::BoundConstness { . fn relate>( . relation: &mut R, . a: ty::BoundConstness, . b: ty::BoundConstness, . ) -> RelateResult<'tcx, ty::BoundConstness> { -- line 229 ---------------------------------------- -- line 236 ---------------------------------------- . } . . impl<'tcx> Relate<'tcx> for ast::Unsafety { . fn relate>( . relation: &mut R, . a: ast::Unsafety, . b: ast::Unsafety, . ) -> RelateResult<'tcx, ast::Unsafety> { 1,412 ( 0.00%) if a != b { . Err(TypeError::UnsafetyMismatch(expected_found(relation, a, b))) . } else { . Ok(a) . } . } . } . . impl<'tcx> Relate<'tcx> for abi::Abi { -- line 252 ---------------------------------------- -- line 255 ---------------------------------------- . a: abi::Abi, . b: abi::Abi, . ) -> RelateResult<'tcx, abi::Abi> { . if a == b { Ok(a) } else { Err(TypeError::AbiMismatch(expected_found(relation, a, b))) } . } . } . . impl<'tcx> Relate<'tcx> for ty::ProjectionTy<'tcx> { 233,469 ( 0.00%) fn relate>( . relation: &mut R, . a: ty::ProjectionTy<'tcx>, . b: ty::ProjectionTy<'tcx>, . ) -> RelateResult<'tcx, ty::ProjectionTy<'tcx>> { 75,234 ( 0.00%) if a.item_def_id != b.item_def_id { . Err(TypeError::ProjectionMismatched(expected_found( . relation, . a.item_def_id, . b.item_def_id, . ))) . } else { . let substs = relation.relate(a.substs, b.substs)?; 100,236 ( 0.00%) Ok(ty::ProjectionTy { item_def_id: a.item_def_id, substs: &substs }) . } 177,270 ( 0.00%) } . } . . impl<'tcx> Relate<'tcx> for ty::ExistentialProjection<'tcx> { . fn relate>( . relation: &mut R, . a: ty::ExistentialProjection<'tcx>, . b: ty::ExistentialProjection<'tcx>, . ) -> RelateResult<'tcx, ty::ExistentialProjection<'tcx>> { -- line 286 ---------------------------------------- -- line 304 ---------------------------------------- . b.substs, . )?; . Ok(ty::ExistentialProjection { item_def_id: a.item_def_id, substs, term }) . } . } . } . . impl<'tcx> Relate<'tcx> for ty::TraitRef<'tcx> { 4,794,381 ( 0.08%) fn relate>( . relation: &mut R, . a: ty::TraitRef<'tcx>, . b: ty::TraitRef<'tcx>, . ) -> RelateResult<'tcx, ty::TraitRef<'tcx>> { . // Different traits cannot be related. 1,027,315 ( 0.02%) if a.def_id != b.def_id { 228 ( 0.00%) Err(TypeError::Traits(expected_found(relation, a.def_id, b.def_id))) . } else { 342,413 ( 0.01%) let substs = relate_substs(relation, None, a.substs, b.substs)?; 334,884 ( 0.01%) Ok(ty::TraitRef { def_id: a.def_id, substs }) . } 3,082,091 ( 0.05%) } . } . . impl<'tcx> Relate<'tcx> for ty::ExistentialTraitRef<'tcx> { 2,057 ( 0.00%) fn relate>( . relation: &mut R, . a: ty::ExistentialTraitRef<'tcx>, . b: ty::ExistentialTraitRef<'tcx>, . ) -> RelateResult<'tcx, ty::ExistentialTraitRef<'tcx>> { . // Different traits cannot be related. 3,141 ( 0.00%) if a.def_id != b.def_id { . Err(TypeError::Traits(expected_found(relation, a.def_id, b.def_id))) . } else { 1,423 ( 0.00%) let substs = relate_substs(relation, None, a.substs, b.substs)?; 1,716 ( 0.00%) Ok(ty::ExistentialTraitRef { def_id: a.def_id, substs }) . } 1,309 ( 0.00%) } . } . . #[derive(Copy, Debug, Clone, TypeFoldable)] . struct GeneratorWitness<'tcx>(&'tcx ty::List>); . . impl<'tcx> Relate<'tcx> for GeneratorWitness<'tcx> { . fn relate>( . relation: &mut R, -- line 348 ---------------------------------------- -- line 358 ---------------------------------------- . . impl<'tcx> Relate<'tcx> for Ty<'tcx> { . #[inline] . fn relate>( . relation: &mut R, . a: Ty<'tcx>, . b: Ty<'tcx>, . ) -> RelateResult<'tcx, Ty<'tcx>> { 1,277,496 ( 0.02%) relation.tys(a, b) . } . } . . /// The main "type relation" routine. Note that this does not handle . /// inference artifacts, so you should filter those out before calling . /// it. 3,894,288 ( 0.07%) pub fn super_relate_tys<'tcx, R: TypeRelation<'tcx>>( . relation: &mut R, . a: Ty<'tcx>, . b: Ty<'tcx>, . ) -> RelateResult<'tcx, Ty<'tcx>> { . let tcx = relation.tcx(); . debug!("super_relate_tys: a={:?} b={:?}", a, b); 8,750,714 ( 0.15%) match (a.kind(), b.kind()) { . (&ty::Infer(_), _) | (_, &ty::Infer(_)) => { . // The caller should handle these cases! . bug!("var types encountered in super_relate_tys") . } . . (ty::Bound(..), _) | (_, ty::Bound(..)) => { . bug!("bound types encountered in super_relate_tys") . } -- line 388 ---------------------------------------- -- line 391 ---------------------------------------- . . (&ty::Never, _) . | (&ty::Char, _) . | (&ty::Bool, _) . | (&ty::Int(_), _) . | (&ty::Uint(_), _) . | (&ty::Float(_), _) . | (&ty::Str, _) 5,717 ( 0.00%) if a == b => . { . Ok(a) . } . 767,332 ( 0.01%) (&ty::Param(ref a_p), &ty::Param(ref b_p)) if a_p.index == b_p.index => Ok(a), . . (ty::Placeholder(p1), ty::Placeholder(p2)) if p1 == p2 => Ok(a), . 757,686 ( 0.01%) (&ty::Adt(a_def, a_substs), &ty::Adt(b_def, b_substs)) if a_def == b_def => { 249,426 ( 0.00%) let substs = relation.relate_item_substs(a_def.did, a_substs, b_substs)?; . Ok(tcx.mk_adt(a_def, substs)) . } . . (&ty::Foreign(a_id), &ty::Foreign(b_id)) if a_id == b_id => Ok(tcx.mk_foreign(a_id)), . 7,329 ( 0.00%) (&ty::Dynamic(a_obj, a_region), &ty::Dynamic(b_obj, b_region)) => { 2,094 ( 0.00%) let region_bound = relation.with_cause(Cause::ExistentialRegionBound, |relation| { . relation.relate_with_variance( . ty::Contravariant, . ty::VarianceDiagInfo::default(), 1,047 ( 0.00%) a_region, . b_region, . ) . })?; . Ok(tcx.mk_dynamic(relation.relate(a_obj, b_obj)?, region_bound)) . } . . (&ty::Generator(a_id, a_substs, movability), &ty::Generator(b_id, b_substs, _)) . if a_id == b_id => -- line 428 ---------------------------------------- -- line 439 ---------------------------------------- . // inside the binder so we can related them . let a_types = a_types.map_bound(GeneratorWitness); . let b_types = b_types.map_bound(GeneratorWitness); . // Then remove the GeneratorWitness for the result . let types = relation.relate(a_types, b_types)?.map_bound(|witness| witness.0); . Ok(tcx.mk_generator_witness(types)) . } . 9,104 ( 0.00%) (&ty::Closure(a_id, a_substs), &ty::Closure(b_id, b_substs)) if a_id == b_id => { . // All Closure types with the same id represent . // the (anonymous) type of the same closure expression. So . // all of their regions should be equated. 2,276 ( 0.00%) let substs = relation.relate(a_substs, b_substs)?; . Ok(tcx.mk_closure(a_id, &substs)) . } . 42 ( 0.00%) (&ty::RawPtr(a_mt), &ty::RawPtr(b_mt)) => { 15 ( 0.00%) let mt = relate_type_and_mut(relation, a_mt, b_mt, a)?; . Ok(tcx.mk_ptr(mt)) . } . 179,857 ( 0.00%) (&ty::Ref(a_r, a_ty, a_mutbl), &ty::Ref(b_r, b_ty, b_mutbl)) => { 66,332 ( 0.00%) let r = relation.relate_with_variance( . ty::Contravariant, . ty::VarianceDiagInfo::default(), . a_r, . b_r, . )?; . let a_mt = ty::TypeAndMut { ty: a_ty, mutbl: a_mutbl }; . let b_mt = ty::TypeAndMut { ty: b_ty, mutbl: b_mutbl }; 105,784 ( 0.00%) let mt = relate_type_and_mut(relation, a_mt, b_mt, a)?; . Ok(tcx.mk_ref(r, mt)) . } . 4,543 ( 0.00%) (&ty::Array(a_t, sz_a), &ty::Array(b_t, sz_b)) => { 297 ( 0.00%) let t = relation.relate(a_t, b_t)?; 1,820 ( 0.00%) match relation.relate(sz_a, sz_b) { 2,730 ( 0.00%) Ok(sz) => Ok(tcx.mk_ty(ty::Array(t, sz))), . Err(err) => { . // Check whether the lengths are both concrete/known values, . // but are unequal, for better diagnostics. . // . // It might seem dubious to eagerly evaluate these constants here, . // we however cannot end up with errors in `Relate` during both . // `type_of` and `predicates_of`. This means that evaluating the . // constants should not cause cycle errors here. -- line 484 ---------------------------------------- -- line 489 ---------------------------------------- . TypeError::FixedArraySize(expected_found(relation, sz_a_val, sz_b_val)), . ), . _ => Err(err), . } . } . } . } . 2,065 ( 0.00%) (&ty::Slice(a_t), &ty::Slice(b_t)) => { 90 ( 0.00%) let t = relation.relate(a_t, b_t)?; . Ok(tcx.mk_slice(t)) . } . 20,434 ( 0.00%) (&ty::Tuple(as_), &ty::Tuple(bs)) => { 20,434 ( 0.00%) if as_.len() == bs.len() { . Ok(tcx.mk_tup( 131,010 ( 0.00%) iter::zip(as_, bs).map(|(a, b)| relation.relate(a.expect_ty(), b.expect_ty())), . )?) 108 ( 0.00%) } else if !(as_.is_empty() || bs.is_empty()) { 144 ( 0.00%) Err(TypeError::TupleSize(expected_found(relation, as_.len(), bs.len()))) . } else { . Err(TypeError::Sorts(expected_found(relation, a, b))) . } . } . 3,597 ( 0.00%) (&ty::FnDef(a_def_id, a_substs), &ty::FnDef(b_def_id, b_substs)) 5,995 ( 0.00%) if a_def_id == b_def_id => . { 4,796 ( 0.00%) let substs = relation.relate_item_substs(a_def_id, a_substs, b_substs)?; . Ok(tcx.mk_fn_def(a_def_id, substs)) . } . . (&ty::FnPtr(a_fty), &ty::FnPtr(b_fty)) => { 8,124 ( 0.00%) let fty = relation.relate(a_fty, b_fty)?; . Ok(tcx.mk_fn_ptr(fty)) . } . . // these two are already handled downstream in case of lazy normalization 121,075 ( 0.00%) (&ty::Projection(a_data), &ty::Projection(b_data)) => { . let projection_ty = relation.relate(a_data, b_data)?; . Ok(tcx.mk_projection(projection_ty.item_def_id, projection_ty.substs)) . } . . (&ty::Opaque(a_def_id, a_substs), &ty::Opaque(b_def_id, b_substs)) . if a_def_id == b_def_id => . { . let substs = relate_substs(relation, None, a_substs, b_substs)?; . Ok(tcx.mk_opaque(a_def_id, substs)) . } . . _ => Err(TypeError::Sorts(expected_found(relation, a, b))), . } 4,381,074 ( 0.08%) } . . /// The main "const relation" routine. Note that this does not handle . /// inference artifacts, so you should filter those out before calling . /// it. 10,890 ( 0.00%) pub fn super_relate_consts<'tcx, R: TypeRelation<'tcx>>( . relation: &mut R, . a: &'tcx ty::Const<'tcx>, . b: &'tcx ty::Const<'tcx>, . ) -> RelateResult<'tcx, &'tcx ty::Const<'tcx>> { . debug!("{}.super_relate_consts(a = {:?}, b = {:?})", relation.tag(), a, b); . let tcx = relation.tcx(); . . // FIXME(oli-obk): once const generics can have generic types, this assertion . // will likely get triggered. Move to `normalize_erasing_regions` at that point. 2,178 ( 0.00%) let a_ty = tcx.erase_regions(a.ty); 2,178 ( 0.00%) let b_ty = tcx.erase_regions(b.ty); 1,089 ( 0.00%) if a_ty != b_ty { . relation.tcx().sess.delay_span_bug( . DUMMY_SP, . &format!("cannot relate constants of different types: {} != {}", a_ty, b_ty), . ); . } . . let eagerly_eval = |x: &'tcx ty::Const<'tcx>| x.eval(tcx, relation.param_env()); 1,089 ( 0.00%) let a = eagerly_eval(a); 2,178 ( 0.00%) let b = eagerly_eval(b); . . // Currently, the values that can be unified are primitive types, . // and those that derive both `PartialEq` and `Eq`, corresponding . // to structural-match types. 14,045 ( 0.00%) let is_match = match (a.val, b.val) { . (ty::ConstKind::Infer(_), _) | (_, ty::ConstKind::Infer(_)) => { . // The caller should handle these cases! . bug!("var types encountered in super_relate_consts: {:?} {:?}", a, b) . } . . (ty::ConstKind::Error(_), _) => return Ok(a), . (_, ty::ConstKind::Error(_)) => return Ok(b), . -- line 580 ---------------------------------------- -- line 608 ---------------------------------------- . substs, . promoted: au.promoted, . }), . ty: a.ty, . })); . } . _ => false, . }; 3,435 ( 0.00%) if is_match { Ok(a) } else { Err(TypeError::ConstMismatch(expected_found(relation, a, b))) } 9,801 ( 0.00%) } . . fn check_const_value_eq<'tcx, R: TypeRelation<'tcx>>( . relation: &mut R, . a_val: ConstValue<'tcx>, . b_val: ConstValue<'tcx>, . // FIXME(oli-obk): these arguments should go away with valtrees . a: &'tcx ty::Const<'tcx>, . b: &'tcx ty::Const<'tcx>, . // FIXME(oli-obk): this should just be `bool` with valtrees . ) -> RelateResult<'tcx, bool> { 56 ( 0.00%) let tcx = relation.tcx(); 616 ( 0.00%) Ok(match (a_val, b_val) { 1,232 ( 0.00%) (ConstValue::Scalar(Scalar::Int(a_val)), ConstValue::Scalar(Scalar::Int(b_val))) => { 56 ( 0.00%) a_val == b_val . } . ( . ConstValue::Scalar(Scalar::Ptr(a_val, _a_size)), . ConstValue::Scalar(Scalar::Ptr(b_val, _b_size)), . ) => { . a_val == b_val . || match (tcx.global_alloc(a_val.provenance), tcx.global_alloc(b_val.provenance)) { . (GlobalAlloc::Function(a_instance), GlobalAlloc::Function(b_instance)) => { -- line 639 ---------------------------------------- -- line 672 ---------------------------------------- . } . } . . _ => false, . }) . } . . impl<'tcx> Relate<'tcx> for &'tcx ty::List>> { 10,470 ( 0.00%) fn relate>( . relation: &mut R, . a: Self, . b: Self, . ) -> RelateResult<'tcx, Self> { 1,047 ( 0.00%) let tcx = relation.tcx(); . . // FIXME: this is wasteful, but want to do a perf run to see how slow it is. . // We need to perform this deduplication as we sometimes generate duplicate projections . // in `a`. . let mut a_v: Vec<_> = a.into_iter().collect(); . let mut b_v: Vec<_> = b.into_iter().collect(); . // `skip_binder` here is okay because `stable_cmp` doesn't look at binders . a_v.sort_by(|a, b| a.skip_binder().stable_cmp(tcx, &b.skip_binder())); . a_v.dedup(); . b_v.sort_by(|a, b| a.skip_binder().stable_cmp(tcx, &b.skip_binder())); . b_v.dedup(); 3,141 ( 0.00%) if a_v.len() != b_v.len() { . return Err(TypeError::ExistentialMismatch(expected_found(relation, a, b))); . } . 4,188 ( 0.00%) let v = iter::zip(a_v, b_v).map(|(ep_a, ep_b)| { . use crate::ty::ExistentialPredicate::*; 4,188 ( 0.00%) match (ep_a.skip_binder(), ep_b.skip_binder()) { 4,188 ( 0.00%) (Trait(a), Trait(b)) => Ok(ep_a . .rebind(Trait(relation.relate(ep_a.rebind(a), ep_b.rebind(b))?.skip_binder()))), . (Projection(a), Projection(b)) => Ok(ep_a.rebind(Projection( . relation.relate(ep_a.rebind(a), ep_b.rebind(b))?.skip_binder(), . ))), . (AutoTrait(a), AutoTrait(b)) if a == b => Ok(ep_a.rebind(AutoTrait(a))), . _ => Err(TypeError::ExistentialMismatch(expected_found(relation, a, b))), . } . }); 2,094 ( 0.00%) tcx.mk_poly_existential_predicates(v) 8,376 ( 0.00%) } . } . . impl<'tcx> Relate<'tcx> for ty::ClosureSubsts<'tcx> { . fn relate>( . relation: &mut R, . a: ty::ClosureSubsts<'tcx>, . b: ty::ClosureSubsts<'tcx>, . ) -> RelateResult<'tcx, ty::ClosureSubsts<'tcx>> { -- line 722 ---------------------------------------- -- line 737 ---------------------------------------- . } . . impl<'tcx> Relate<'tcx> for SubstsRef<'tcx> { . fn relate>( . relation: &mut R, . a: SubstsRef<'tcx>, . b: SubstsRef<'tcx>, . ) -> RelateResult<'tcx, SubstsRef<'tcx>> { 26,222 ( 0.00%) relate_substs(relation, None, a, b) . } . } . . impl<'tcx> Relate<'tcx> for ty::Region<'tcx> { . fn relate>( . relation: &mut R, . a: ty::Region<'tcx>, . b: ty::Region<'tcx>, . ) -> RelateResult<'tcx, ty::Region<'tcx>> { 182,182 ( 0.00%) relation.regions(a, b) . } . } . . impl<'tcx> Relate<'tcx> for &'tcx ty::Const<'tcx> { . fn relate>( . relation: &mut R, . a: &'tcx ty::Const<'tcx>, . b: &'tcx ty::Const<'tcx>, . ) -> RelateResult<'tcx, &'tcx ty::Const<'tcx>> { 4,059 ( 0.00%) relation.consts(a, b) . } . } . . impl<'tcx, T: Relate<'tcx>> Relate<'tcx> for ty::Binder<'tcx, T> { . fn relate>( . relation: &mut R, . a: ty::Binder<'tcx, T>, . b: ty::Binder<'tcx, T>, . ) -> RelateResult<'tcx, ty::Binder<'tcx, T>> { 24,138 ( 0.00%) relation.binders(a, b) . } . } . . impl<'tcx> Relate<'tcx> for GenericArg<'tcx> { 2,434,264 ( 0.04%) fn relate>( . relation: &mut R, . a: GenericArg<'tcx>, . b: GenericArg<'tcx>, . ) -> RelateResult<'tcx, GenericArg<'tcx>> { 3,341,674 ( 0.06%) match (a.unpack(), b.unpack()) { . (GenericArgKind::Lifetime(a_lt), GenericArgKind::Lifetime(b_lt)) => { . Ok(relation.relate(a_lt, b_lt)?.into()) . } . (GenericArgKind::Type(a_ty), GenericArgKind::Type(b_ty)) => { 18,661 ( 0.00%) Ok(relation.relate(a_ty, b_ty)?.into()) . } . (GenericArgKind::Const(a_ct), GenericArgKind::Const(b_ct)) => { . Ok(relation.relate(a_ct, b_ct)?.into()) . } . (GenericArgKind::Lifetime(unpacked), x) => { . bug!("impossible case reached: can't relate: {:?} with {:?}", unpacked, x) . } . (GenericArgKind::Type(unpacked), x) => { . bug!("impossible case reached: can't relate: {:?} with {:?}", unpacked, x) . } . (GenericArgKind::Const(unpacked), x) => { . bug!("impossible case reached: can't relate: {:?} with {:?}", unpacked, x) . } . } 2,813,132 ( 0.05%) } . } . . impl<'tcx> Relate<'tcx> for ty::ImplPolarity { . fn relate>( . relation: &mut R, . a: ty::ImplPolarity, . b: ty::ImplPolarity, . ) -> RelateResult<'tcx, ty::ImplPolarity> { -- line 813 ---------------------------------------- -- line 815 ---------------------------------------- . Err(TypeError::PolarityMismatch(expected_found(relation, a, b))) . } else { . Ok(a) . } . } . } . . impl<'tcx> Relate<'tcx> for ty::TraitPredicate<'tcx> { 946 ( 0.00%) fn relate>( . relation: &mut R, . a: ty::TraitPredicate<'tcx>, . b: ty::TraitPredicate<'tcx>, . ) -> RelateResult<'tcx, ty::TraitPredicate<'tcx>> { . Ok(ty::TraitPredicate { 430 ( 0.00%) trait_ref: relation.relate(a.trait_ref, b.trait_ref)?, . constness: relation.relate(a.constness, b.constness)?, . polarity: relation.relate(a.polarity, b.polarity)?, . }) 774 ( 0.00%) } . } . . impl<'tcx> Relate<'tcx> for ty::Term<'tcx> { . fn relate>( . relation: &mut R, . a: Self, . b: Self, . ) -> RelateResult<'tcx, Self> { -- line 841 ---------------------------------------- -- line 862 ---------------------------------------- . . /////////////////////////////////////////////////////////////////////////// . // Error handling . . pub fn expected_found<'tcx, R, T>(relation: &mut R, a: T, b: T) -> ExpectedFound . where . R: TypeRelation<'tcx>, . { 152 ( 0.00%) ExpectedFound::new(relation.a_is_expected(), a, b) . } 12,169,914 ( 0.21%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_type_ir/src/lib.rs -------------------------------------------------------------------------------- Ir -- line 5 ---------------------------------------- . #[macro_use] . extern crate rustc_macros; . . use rustc_data_structures::stable_hasher::{HashStable, StableHasher}; . use rustc_data_structures::unify::{EqUnifyValue, UnifyKey}; . use std::fmt; . use std::mem::discriminant; . 8,206,669 ( 0.14%) bitflags! { . /// Flags that we track on types. These flags are propagated upwards . /// through the type during type construction, so that we can quickly check . /// whether the type has various kinds of types in it without recursing . /// over the type itself. . pub struct TypeFlags: u32 { . // Does this have parameters? Used to determine whether substitution is . // required. . /// Does this have `Param`? -- line 21 ---------------------------------------- -- line 163 ---------------------------------------- . /// for<'a> fn(&'a x) . /// . /// and you wanted to change it to . /// . /// for<'a> fn(for<'b> fn(&'a x)) . /// . /// you would need to shift the index for `'a` into a new binder. . #[must_use] 4,164 ( 0.00%) pub fn shifted_in(self, amount: u32) -> DebruijnIndex { 2,445,648 ( 0.04%) DebruijnIndex::from_u32(self.as_u32() + amount) 12,492 ( 0.00%) } . . /// Update this index in place by shifting it "in" through . /// `amount` number of binders. 1,218,660 ( 0.02%) pub fn shift_in(&mut self, amount: u32) { 1,218,660 ( 0.02%) *self = self.shifted_in(amount); 2,437,320 ( 0.04%) } . . /// Returns the resulting index when this value is moved out from . /// `amount` number of new binders. . #[must_use] 3,605 ( 0.00%) pub fn shifted_out(self, amount: u32) -> DebruijnIndex { 2,444,530 ( 0.04%) DebruijnIndex::from_u32(self.as_u32() - amount) 10,815 ( 0.00%) } . . /// Update in place by shifting out from `amount` binders. 1,218,660 ( 0.02%) pub fn shift_out(&mut self, amount: u32) { 2,437,320 ( 0.04%) *self = self.shifted_out(amount); 2,437,320 ( 0.04%) } . . /// Adjusts any De Bruijn indices so as to make `to_binder` the . /// innermost binder. That is, if we have something bound at `to_binder`, . /// it will now be bound at INNERMOST. This is an appropriate thing to do . /// when moving a region out from inside binders: . /// . /// ``` . /// for<'a> fn(for<'b> for<'c> fn(&'a u32), _) -- line 199 ---------------------------------------- -- line 210 ---------------------------------------- . /// If we invoke `shift_out_to_binder` and the region is in fact . /// bound by one of the binders we are shifting out of, that is an . /// error (and should fail an assertion failure). . pub fn shifted_out_to_binder(self, to_binder: DebruijnIndex) -> Self { . self.shifted_out(to_binder.as_u32() - INNERMOST.as_u32()) . } . } . 283 ( 0.00%) #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)] 1,572 ( 0.00%) #[derive(Encodable, Decodable)] . pub enum IntTy { . Isize, . I8, . I16, . I32, . I64, . I128, . } -- line 227 ---------------------------------------- -- line 244 ---------------------------------------- . IntTy::I8 => 8, . IntTy::I16 => 16, . IntTy::I32 => 32, . IntTy::I64 => 64, . IntTy::I128 => 128, . }) . } . 5 ( 0.00%) pub fn normalize(&self, target_width: u32) -> Self { 15 ( 0.00%) match self { . IntTy::Isize => match target_width { . 16 => IntTy::I16, . 32 => IntTy::I32, . 64 => IntTy::I64, . _ => unreachable!(), . }, . _ => *self, . } 10 ( 0.00%) } . } . 297 ( 0.00%) #[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, Debug)] 2,462 ( 0.00%) #[derive(Encodable, Decodable)] . pub enum UintTy { . Usize, . U8, . U16, . U32, . U64, . U128, . } -- line 274 ---------------------------------------- -- line 291 ---------------------------------------- . UintTy::U8 => 8, . UintTy::U16 => 16, . UintTy::U32 => 32, . UintTy::U64 => 64, . UintTy::U128 => 128, . }) . } . 206 ( 0.00%) pub fn normalize(&self, target_width: u32) -> Self { 618 ( 0.00%) match self { 352 ( 0.00%) UintTy::Usize => match target_width { . 16 => UintTy::U16, . 32 => UintTy::U32, . 64 => UintTy::U64, . _ => unreachable!(), . }, . _ => *self, . } 412 ( 0.00%) } . } . 71 ( 0.00%) #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)] 656 ( 0.00%) #[derive(Encodable, Decodable)] . pub enum FloatTy { . F32, . F64, . } . . impl FloatTy { . pub fn name_str(self) -> &'static str { . match self { -- line 321 ---------------------------------------- -- line 333 ---------------------------------------- . } . . #[derive(Clone, Copy, PartialEq, Eq)] . pub enum IntVarValue { . IntType(IntTy), . UintType(UintTy), . } . 8 ( 0.00%) #[derive(Clone, Copy, PartialEq, Eq)] . pub struct FloatVarValue(pub FloatTy); . . rustc_index::newtype_index! { . /// A **ty**pe **v**ariable **ID**. . pub struct TyVid { . DEBUG_FORMAT = "_#{}t" . } . } . . /// An **int**egral (`u32`, `i32`, `usize`, etc.) type **v**ariable **ID**. . #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Encodable, Decodable)] . pub struct IntVid { 336 ( 0.00%) pub index: u32, . } . . /// An **float**ing-point (`f32` or `f64`) type **v**ariable **ID**. . #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Encodable, Decodable)] . pub struct FloatVid { 42 ( 0.00%) pub index: u32, . } . . /// A placeholder for a type that hasn't been inferred yet. . /// . /// E.g., if we have an empty array (`[]`), then we create a fresh . /// type variable for the element type since we won't know until it's . /// used what the element type is supposed to be. 1,406,679 ( 0.02%) #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Encodable, Decodable)] . pub enum InferTy { . /// A type variable. . TyVar(TyVid), . /// An integral type variable (`{integer}`). . /// . /// These are created when the compiler sees an integer literal like . /// `1` that could be several different types (`u8`, `i32`, `u32`, etc.). . /// We don't know until it's used what type it's supposed to be, so -- line 376 ---------------------------------------- -- line 396 ---------------------------------------- . FreshFloatTy(u32), . } . . /// Raw `TyVid` are used as the unification key for `sub_relations`; . /// they carry no values. . impl UnifyKey for TyVid { . type Value = (); . fn index(&self) -> u32 { 137,391 ( 0.00%) self.as_u32() 137,391 ( 0.00%) } . fn from_index(i: u32) -> TyVid { . TyVid::from_u32(i) 141,154 ( 0.00%) } . fn tag() -> &'static str { . "TyVid" . } . } . . impl EqUnifyValue for IntVarValue {} . . impl UnifyKey for IntVid { . type Value = Option; . #[inline] // make this function eligible for inlining - it is quite hot. . fn index(&self) -> u32 { . self.index . } 12,915 ( 0.00%) fn from_index(i: u32) -> IntVid { . IntVid { index: i } 12,915 ( 0.00%) } . fn tag() -> &'static str { . "IntVid" . } . } . . impl EqUnifyValue for FloatVarValue {} . . impl UnifyKey for FloatVid { . type Value = Option; . fn index(&self) -> u32 { 88 ( 0.00%) self.index 88 ( 0.00%) } . fn from_index(i: u32) -> FloatVid { . FloatVid { index: i } . } . fn tag() -> &'static str { . "FloatVid" . } . } . 108,280 ( 0.00%) #[derive(Copy, Clone, PartialEq, Decodable, Encodable, Hash)] . pub enum Variance { . Covariant, // T <: T iff A <: B -- e.g., function return type . Invariant, // T <: T iff B == A -- e.g., type of mutable cell . Contravariant, // T <: T iff B <: A -- e.g., function param type . Bivariant, // T <: T -- e.g., unused type parameter . } . . impl Variance { -- line 453 ---------------------------------------- -- line 482 ---------------------------------------- . /// `Contravariant.xform(Covariant)` or `Contravariant`. The same . /// is true for its `i32` argument. In the `*mut T` case, the . /// variance of `Vec` is `Contravariant.xform(Invariant)`, . /// and hence the outermost type is `Invariant` with respect to . /// `Vec` (and its `i32` argument). . /// . /// Source: Figure 1 of "Taming the Wildcards: . /// Combining Definition- and Use-Site Variance" published in PLDI'11. 161,852 ( 0.00%) pub fn xform(self, v: Variance) -> Variance { 1,021,792 ( 0.02%) match (self, v) { . // Figure 1, column 1. . (Variance::Covariant, Variance::Covariant) => Variance::Covariant, . (Variance::Covariant, Variance::Contravariant) => Variance::Contravariant, . (Variance::Covariant, Variance::Invariant) => Variance::Invariant, . (Variance::Covariant, Variance::Bivariant) => Variance::Bivariant, . . // Figure 1, column 2. . (Variance::Contravariant, Variance::Covariant) => Variance::Contravariant, -- line 499 ---------------------------------------- -- line 502 ---------------------------------------- . (Variance::Contravariant, Variance::Bivariant) => Variance::Bivariant, . . // Figure 1, column 3. . (Variance::Invariant, _) => Variance::Invariant, . . // Figure 1, column 4. . (Variance::Bivariant, _) => Variance::Bivariant, . } 161,852 ( 0.00%) } . } . . impl HashStable for DebruijnIndex { . fn hash_stable(&self, ctx: &mut CTX, hasher: &mut StableHasher) { . self.as_u32().hash_stable(ctx, hasher); . } . } . -- line 518 ---------------------------------------- 2,776,316 ( 0.05%) -------------------------------------------------------------------------------- -- 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> { 263,424 ( 0.00%) pub fn new(infcx: &'cx InferCtxt<'cx, 'tcx>) -> SelectionContext<'cx, 'tcx> { 2,785,939 ( 0.05%) SelectionContext { . infcx, 471,759 ( 0.01%) freshener: infcx.freshener_keep_static(), . intercrate: false, . intercrate_ambiguity_causes: None, . allow_negative_impls: false, . query_mode: TraitQueryMode::Standard, . } 219,520 ( 0.00%) } . . pub fn intercrate(infcx: &'cx InferCtxt<'cx, 'tcx>) -> SelectionContext<'cx, 'tcx> { 2,480 ( 0.00%) SelectionContext { . infcx, 310 ( 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, . } . } . 46,912 ( 0.00%) pub fn with_query_mode( . infcx: &'cx InferCtxt<'cx, 'tcx>, . query_mode: TraitQueryMode, . ) -> SelectionContext<'cx, 'tcx> { . debug!(?query_mode, "with_query_mode"); 93,824 ( 0.00%) SelectionContext { . infcx, 5,864 ( 0.00%) freshener: infcx.freshener_keep_static(), . intercrate: false, . intercrate_ambiguity_causes: None, . allow_negative_impls: false, . query_mode, . } 35,184 ( 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> { 3,069,000 ( 0.05%) self.infcx 39,061 ( 0.00%) } . . pub fn tcx(&self) -> TyCtxt<'tcx> { 1,619,848 ( 0.03%) self.infcx.tcx . } . . pub fn is_intercrate(&self) -> bool { 234,866 ( 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. 554,176 ( 0.01%) #[instrument(level = "debug", skip(self))] 712,512 ( 0.01%) pub fn select( . &mut self, . obligation: &TraitObligation<'tcx>, . ) -> SelectionResult<'tcx, Selection<'tcx>> { 561,370 ( 0.01%) 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) => { 47,936 ( 0.00%) return Err(e); . } . Ok(None) => { 34,104 ( 0.00%) return Ok(None); . } 385,218 ( 0.01%) Ok(Some(candidate)) => candidate, . }; . 642,338 ( 0.01%) match self.confirm_candidate(obligation, candidate) { . Err(SelectionError::Overflow) => { . assert!(self.query_mode == TraitQueryMode::Canonical); . Err(SelectionError::Overflow) . } 2,002 ( 0.00%) Err(e) => Err(e), . Ok(candidate) => { . debug!(?candidate, "confirmed"); 768,588 ( 0.01%) Ok(Some(candidate)) . } . } . } . 791,680 ( 0.01%) 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); . 158,336 ( 0.00%) self.candidate_from_obligation(&stack) 712,512 ( 0.01%) } . . /////////////////////////////////////////////////////////////////////////// . // 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. 2 ( 0.00%) assert!(self.query_mode == TraitQueryMode::Standard); . 10 ( 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. 11,728 ( 0.00%) pub fn evaluate_root_obligation( . &mut self, . obligation: &PredicateObligation<'tcx>, . ) -> Result { . self.evaluation_probe(|this| { 17,598 ( 0.00%) this.evaluate_predicate_recursively( . TraitObligationStackList::empty(&ProvisionalEvaluationCache::default()), . obligation.clone(), . ) . }) 11,728 ( 0.00%) } . . fn evaluation_probe( . &mut self, . op: impl FnOnce(&mut Self) -> Result, . ) -> Result { 2,289,336 ( 0.04%) self.infcx.probe(|snapshot| -> Result { 11,732 ( 0.00%) let result = op(self)?; . 2,011,380 ( 0.03%) match self.infcx.leak_check(true, snapshot) { . Ok(()) => {} . Err(_) => return Ok(EvaluatedToErr), . } . 1,436,700 ( 0.02%) 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. 496,700 ( 0.01%) #[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; 151,036 ( 0.00%) for obligation in predicates { 19,708 ( 0.00%) let eval = self.evaluate_predicate_recursively(stack, obligation.clone())?; 9,854 ( 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) . } . 107,930 ( 0.00%) #[instrument( . level = "debug", . skip(self, previous_stack), . fields(previous_stack = ?previous_stack.head()) 97,137 ( 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. 21,586 ( 0.00%) match previous_stack.head() { 9,850 ( 0.00%) Some(h) => self.check_recursion_limit(&obligation, h.obligation)?, 5,868 ( 0.00%) None => self.check_recursion_limit(&obligation, &obligation)?, . } . 64,758 ( 0.00%) let result = ensure_sufficient_stack(|| { 10,793 ( 0.00%) let bound_predicate = obligation.predicate.kind(); 107,930 ( 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); 159,435 ( 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? 585 ( 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 6 ( 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); 450 ( 0.00%) match project::poly_project_and_unify_type(self, &project_obligation) { 335 ( 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. 268 ( 0.00%) if let Some(key) = 603 ( 0.00%) ProjectionCacheKey::from_poly_projection_predicate(self, data) . { 536 ( 0.00%) if let Some(cached_res) = self . .infcx . .inner . .borrow_mut() . .projection_cache() . .is_complete(key) . { . break 'compute_res Ok(cached_res); . } . } . 134 ( 0.00%) self.add_depth( . subobligations.iter_mut(), 134 ( 0.00%) obligation.recursion_depth, . ); 134 ( 0.00%) let res = self.evaluate_predicates_recursively( 201 ( 0.00%) previous_stack, 335 ( 0.00%) subobligations, . ); 268 ( 0.00%) if let Ok(res) = res { 134 ( 0.00%) if res == EvaluatedToOk || res == EvaluatedToOkModuloRegions { 124 ( 0.00%) if let Some(key) = 31 ( 0.00%) ProjectionCacheKey::from_poly_projection_predicate( 217 ( 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. 217 ( 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) => { 170 ( 0.00%) match self.infcx.closure_kind(closure_substs) { . Some(closure_kind) => { 102 ( 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") . } . } 10,793 ( 0.00%) }); . . debug!("finished: {:?} from {:?}", result, obligation); . . result . } . 223,209 ( 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 { 21,258 ( 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"); 664 ( 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; 21,258 ( 0.00%) let mut param_env = obligation.param_env; . . fresh_trait_pred = fresh_trait_pred.map_bound(|mut pred| { 10,629 ( 0.00%) pred.remap_constness(self.tcx(), &mut param_env); 127,548 ( 0.00%) pred . }); . . debug!(?fresh_trait_pred); . 19,710 ( 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); . } . 87,129 ( 0.00%) let (result, dep_node) = self.in_task(|this| this.evaluate_stack(&stack)); 9,681 ( 0.00%) let result = result?; . 48,405 ( 0.00%) if !result.must_apply_modulo_regions() { . stack.cache().on_failure(stack.dfn); . } . 9,681 ( 0.00%) let reached_depth = stack.reached_depth.get(); 19,362 ( 0.00%) if reached_depth >= stack.depth { . debug!(?result, "CACHE MISS"); 183,939 ( 0.00%) self.insert_evaluation_cache(param_env, fresh_trait_pred, dep_node, result); . . stack.cache().on_completion( 19,362 ( 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 839 ---------------------------------------- . fn check_evaluation_cycle( . &mut self, . stack: &TraitObligationStack<'_, 'tcx>, . ) -> Option { . if let Some(cycle_depth) = stack . .iter() . .skip(1) // Skip top-most frame. . .find(|prev| { 10,870 ( 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 -- line 855 ---------------------------------------- -- line 874 ---------------------------------------- . debug!("evaluate_stack --> recursive, inductive"); . Some(EvaluatedToRecur) . } . } else { . None . } . } . 87,129 ( 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 = 9,681 ( 0.00%) stack.fresh_trait_pred.skip_binder().trait_ref.substs.types().any(|ty| ty.is_fresh()); . 29,043 ( 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. 48,405 ( 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); . } . } . 19,362 ( 0.00%) if unbound_input_types . && stack.iter().skip(1).any(|prev| { 258 ( 0.00%) stack.obligation.param_env == prev.obligation.param_env . && self.match_fresh_trait_refs( 344 ( 0.00%) stack.fresh_trait_pred, 344 ( 0.00%) prev.fresh_trait_pred, . prev.obligation.param_env, . ) . }) . { . debug!("evaluate_stack --> unbound argument, recursive --> giving up",); . return Ok(EvaluatedToUnknown); . } . 102,952 ( 0.00%) match self.candidate_from_obligation(stack) { 38,226 ( 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), . } 96,810 ( 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 998 ---------------------------------------- . skip(self, stack), . fields(depth = stack.obligation.recursion_depth) . )] . fn evaluate_candidate<'o>( . &mut self, . stack: &TraitObligationStack<'o, 'tcx>, . candidate: &SelectionCandidate<'tcx>, . ) -> Result { 14,408 ( 0.00%) let mut result = self.evaluation_probe(|this| { . let candidate = (*candidate).clone(); 117,571 ( 0.00%) match this.confirm_candidate(stack.obligation, candidate) { . Ok(selection) => { . debug!(?selection); 28,816 ( 0.00%) this.evaluate_predicates_recursively( . stack.list(), 93,652 ( 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` 21,258 ( 0.00%) if self.intercrate { . return None; . } . . let tcx = self.tcx(); . if self.can_use_global_caches(param_env) { 23,933 ( 0.00%) if let Some(res) = tcx.evaluation_cache.get(¶m_env.and(trait_pred), tcx) { . return Some(res); . } . } 39,420 ( 0.00%) self.infcx.evaluation_cache.get(¶m_env.and(trait_pred), tcx) . } . 116,172 ( 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. 38,724 ( 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` 19,362 ( 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 2,647 ( 0.00%) self.tcx().evaluation_cache.insert(param_env.and(trait_pred), dep_node, result); . return; . } . } . . debug!(?trait_pred, ?result, "insert_evaluation_cache"); 28,128 ( 0.00%) self.infcx.evaluation_cache.insert(param_env.and(trait_pred), dep_node, result); 77,448 ( 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. 67 ( 0.00%) fn add_depth>>( . &self, . it: I, . min_depth: usize, . ) { 436 ( 0.00%) it.for_each(|o| o.recursion_depth = cmp::max(min_depth, o.recursion_depth) + 1); 134 ( 0.00%) } . . fn check_recursion_depth>( . &self, . depth: usize, . error_obligation: &Obligation<'tcx, T>, . ) -> Result<(), OverflowError> { 398,568 ( 0.01%) 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, . { 559,767 ( 0.01%) let (result, dep_node) = 335,802 ( 0.01%) self.tcx().dep_graph.with_anon_task(self.tcx(), DepKind::TraitSelect, || op(self)); . self.tcx().dep_graph.read_index(dep_node); 516,708 ( 0.01%) (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()); . 612,279 ( 0.01%) for candidate in candidates { . // Respect const trait obligations 110,787 ( 0.00%) if obligation.is_const() { . 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 => {} -- line 1178 ---------------------------------------- -- line 1186 ---------------------------------------- . ConstDropCandidate(_) => {} . _ => { . // reject all other types of candidates . continue; . } . } . } . 73,858 ( 0.00%) if let ImplCandidate(def_id) = candidate { 16,314 ( 0.00%) if ty::ImplPolarity::Reservation == tcx.impl_polarity(def_id) 8,157 ( 0.00%) || obligation.polarity() == tcx.impl_polarity(def_id) . || self.allow_negative_impls . { . result.push(candidate); . } . } else { . result.push(candidate); . } . } . 164,848 ( 0.00%) result . } . . /// filter_reservation_impls filter reservation impl for any goal as ambiguous 617,916 ( 0.01%) #[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. 88,036 ( 0.00%) if let ImplCandidate(def_id) = candidate { 15,340 ( 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); . } . } 218,088 ( 0.00%) Ok(Some(candidate)) . } . . fn is_knowable<'o>(&mut self, stack: &TraitObligationStack<'o, 'tcx>) -> Option { . debug!("is_knowable(intercrate={:?})", self.intercrate); . 129,183 ( 0.00%) if !self.intercrate || stack.obligation.polarity() == ty::ImplPolarity::Negative { . return None; . } . . let obligation = &stack.obligation; 6 ( 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; . 6 ( 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` 177,698 ( 0.00%) if self.intercrate { 2 ( 0.00%) return None; . } . let tcx = self.tcx(); . let mut pred = cache_fresh_trait_pred.skip_binder(); 177,694 ( 0.00%) pred.remap_constness(tcx, &mut param_env); . 88,847 ( 0.00%) if self.can_use_global_caches(param_env) { 639,360 ( 0.01%) if let Some(res) = tcx.selection_cache.get(¶m_env.and(pred), tcx) { 590,915 ( 0.01%) return Some(res); . } . } 452,401 ( 0.01%) 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` 86,118 ( 0.00%) if self.intercrate { . return false; . } 129,171 ( 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(); . 86,118 ( 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; . } . 37,355 ( 0.00%) if self.can_use_global_caches(param_env) { 41,976 ( 0.00%) if let Err(Overflow) = candidate { . // Don't cache overflow globally; we only produce this in certain modes. . } else if !pred.needs_infer() { 73,924 ( 0.00%) if !candidate.needs_infer() { . debug!(?pred, ?candidate, "insert_candidate_cache global"); . // This may overwrite the cache with the same value. 498,987 ( 0.01%) tcx.selection_cache.insert(param_env.and(pred), dep_node, candidate); . return; . } . } . } . . debug!(?pred, ?candidate, "insert_candidate_cache local"); 434,102 ( 0.01%) 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. 29,799 ( 0.00%) fn match_projection_obligation_against_definition_bounds( . &mut self, . obligation: &TraitObligation<'tcx>, . ) -> smallvec::SmallVec<[usize; 2]> { 43,043 ( 0.00%) let poly_trait_predicate = self.infcx().resolve_vars_if_possible(obligation.predicate); . let placeholder_trait_predicate = 56,287 ( 0.00%) self.infcx().replace_bound_vars_with_placeholders(poly_trait_predicate); . debug!( . ?placeholder_trait_predicate, . "match_projection_obligation_against_definition_bounds" . ); . 3,311 ( 0.00%) let tcx = self.infcx.tcx; 19,866 ( 0.00%) let (def_id, substs) = match *placeholder_trait_predicate.trait_ref.self_ty().kind() { 9,933 ( 0.00%) ty::Projection(ref data) => (data.item_def_id, data.substs), . 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 1404 ---------------------------------------- -- 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(); 47,229 ( 0.00%) if let ty::PredicateKind::Trait(pred) = bound_predicate.skip_binder() { . let bound = bound_predicate.rebind(pred.trait_ref); 234,375 ( 0.00%) if self.infcx.probe(|_| { 90,446 ( 0.00%) match self.match_normalize_trait_ref( . obligation, 62,500 ( 0.00%) bound, 62,500 ( 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 29,799 ( 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. 203,125 ( 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()); 51,897 ( 0.00%) if placeholder_trait_ref.def_id != trait_bound.def_id() { . // Avoid unnecessary normalization 26,228 ( 0.00%) return Err(()); . } . 30,132 ( 0.00%) let Normalized { value: trait_bound, obligations: _ } = ensure_sufficient_stack(|| { . project::normalize_with_depth( . self, 2,511 ( 0.00%) obligation.param_env, . obligation.cause.clone(), 7,533 ( 0.00%) obligation.recursion_depth + 1, 10,044 ( 0.00%) trait_bound, . ) . }); 7,533 ( 0.00%) self.infcx 5,022 ( 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() { 4,295 ( 0.00%) Some(trait_bound) . } else { . None . } . }) . .map_err(|_| ()) 140,625 ( 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| { 3,016,970 ( 0.05%) match this.match_where_clause_trait_ref(stack.obligation, where_clause_trait_ref) { 140,512 ( 0.00%) Ok(obligations) => this.evaluate_predicates_recursively(stack.list(), obligations), . Err(()) => Ok(EvaluatedToErr), . } . }) . } . 1,935 ( 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(); 1,075 ( 0.00%) let (infer_predicate, _) = self.infcx.replace_bound_vars_with_fresh_vars( 645 ( 0.00%) obligation.cause.span, . LateBoundRegionConversionTime::HigherRankedType, . env_predicate, . ); 430 ( 0.00%) let infer_projection = if potentially_unnormalized_candidates { 672 ( 0.00%) ensure_sufficient_stack(|| { 336 ( 0.00%) project::normalize_with_depth_to( . self, 84 ( 0.00%) obligation.param_env, . obligation.cause.clone(), 252 ( 0.00%) obligation.recursion_depth + 1, 168 ( 0.00%) infer_predicate.projection_ty, . &mut nested_obligations, . ) . }) . } else { 262 ( 0.00%) infer_predicate.projection_ty . }; . 215 ( 0.00%) self.infcx 430 ( 0.00%) .at(&obligation.cause, obligation.param_env) 430 ( 0.00%) .sup(obligation.predicate, infer_projection) 1,663 ( 0.00%) .map_or(false, |InferOk { obligations, value: () }| { . self.evaluate_predicates_recursively( . TraitObligationStackList::empty(&ProvisionalEvaluationCache::default()), . nested_obligations.into_iter().chain(obligations), . ) 392 ( 0.00%) .map_or(false, |res| res.may_apply()) . }) 1,935 ( 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 { 402 ( 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>| { 40 ( 0.00%) 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. 8,976 ( 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 1623 ---------------------------------------- . (FnPointerCandidate { .. }, FnPointerCandidate { is_const: false }) => true, . . // If obligation is a sized predicate or the where-clause bound is . // global, prefer the projection or object candidate. See issue . // #50825 and #89352. . (ObjectCandidate(_) | ProjectionCandidate(_), ParamCandidate(ref cand)) => { . sized_predicate || is_global(cand) . } 16 ( 0.00%) (ParamCandidate(ref cand), ObjectCandidate(_) | ProjectionCandidate(_)) => { 16 ( 0.00%) !(sized_predicate || is_global(cand)) . } . . // Global bounds from the where clause should be ignored . // here (see issue #50825). Otherwise, we have a where . // clause so don't go around looking for impls. . // Arbitrarily give param candidates priority . // over projection and object candidates. . ( 111 ( 0.00%) ParamCandidate(ref cand), . ImplCandidate(..) . | ClosureCandidate . | GeneratorCandidate . | FnPointerCandidate { .. } . | BuiltinObjectCandidate . | BuiltinUnsizeCandidate . | TraitUpcastingUnsizeCandidate(_) . | BuiltinCandidate { .. } -- line 1649 ---------------------------------------- -- line 1674 ---------------------------------------- . } . (ObjectCandidate(_), ProjectionCandidate(_)) . | (ProjectionCandidate(_), ObjectCandidate(_)) => { . bug!("Have both object and projection candidate") . } . . // Arbitrarily give projection and object candidates priority. . ( 804 ( 0.00%) ObjectCandidate(_) | ProjectionCandidate(_), . ImplCandidate(..) . | ClosureCandidate . | GeneratorCandidate . | FnPointerCandidate { .. } . | BuiltinObjectCandidate . | BuiltinUnsizeCandidate . | TraitUpcastingUnsizeCandidate(_) . | BuiltinCandidate { .. } -- line 1690 ---------------------------------------- -- line 1696 ---------------------------------------- . | ClosureCandidate . | GeneratorCandidate . | FnPointerCandidate { .. } . | BuiltinObjectCandidate . | BuiltinUnsizeCandidate . | TraitUpcastingUnsizeCandidate(_) . | BuiltinCandidate { .. } . | TraitAliasCandidate(..), 1,608 ( 0.00%) ObjectCandidate(_) | ProjectionCandidate(_), . ) => false, . 4,020 ( 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(); 1,608 ( 0.00%) if other.evaluation.must_apply_modulo_regions() { 3,216 ( 0.00%) if tcx.specializes((other_def, victim_def)) { . return true; . } . } . 2,010 ( 0.00%) if other.evaluation.must_apply_considering_regions() { 688 ( 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, . } . } . 203,760 ( 0.00%) fn sized_conditions( . &mut self, . obligation: &TraitObligation<'tcx>, . ) -> BuiltinImplConditions<'tcx> { . use self::BuiltinImplConditions::{Ambiguous, None, Where}; . . // NOTE: binder moved to (*) 61,128 ( 0.00%) let self_ty = self.infcx.shallow_resolve(obligation.predicate.skip_binder().self_ty()); . 101,896 ( 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 1,254 ( 0.00%) Where(ty::Binder::dummy(Vec::new())) . } . . ty::Str | ty::Slice(_) | ty::Dynamic(..) | ty::Foreign(..) => None, . . ty::Tuple(tys) => Where( . obligation . .predicate 3,063 ( 0.00%) .rebind(tys.last().into_iter().map(|k| k.expect_ty()).collect()), . ), . . ty::Adt(def, substs) => { 12,154 ( 0.00%) let sized_crit = def.sized_constraint(self.tcx()); . // (*) binder moved here 30,385 ( 0.00%) Where( . obligation.predicate.rebind({ 6,077 ( 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); . } . } 163,008 ( 0.00%) } . 32,064 ( 0.00%) fn copy_clone_conditions( . &mut self, . obligation: &TraitObligation<'tcx>, . ) -> BuiltinImplConditions<'tcx> { . // NOTE: binder moved to (*) 8,016 ( 0.00%) let self_ty = self.infcx.shallow_resolve(obligation.predicate.skip_binder().self_ty()); . . use self::BuiltinImplConditions::{Ambiguous, None, Where}; . 20,146 ( 0.00%) match *self_ty.kind() { . ty::Infer(ty::IntVar(_)) . | ty::Infer(ty::FloatVar(_)) . | ty::FnDef(..) . | ty::FnPtr(_) 32 ( 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, . 119 ( 0.00%) ty::Tuple(tys) => { . // (*) binder moved here 664 ( 0.00%) Where(obligation.predicate.rebind(tys.iter().map(|k| k.expect_ty()).collect())) . } . 125 ( 0.00%) ty::Closure(_, substs) => { . // (*) binder moved here 375 ( 0.00%) let ty = self.infcx.shallow_resolve(substs.as_closure().tupled_upvars_ty()); 250 ( 0.00%) if let ty::Infer(ty::TyVar(_)) = ty.kind() { . // Not yet resolved. . Ambiguous . } else { 875 ( 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); . } . } 24,048 ( 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 2003 ---------------------------------------- . // 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)]) . } . } . } . 14,592 ( 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| { 3,822 ( 0.00%) let ty: ty::Binder<'tcx, Ty<'tcx>> = types.rebind(ty); // <----/ . 15,288 ( 0.00%) self.infcx.commit_unconditionally(|_| { 3,822 ( 0.00%) let placeholder_ty = self.infcx.replace_bound_vars_with_placeholders(ty); 6,370 ( 0.00%) let Normalized { value: normalized_ty, mut obligations } = 12,740 ( 0.00%) ensure_sufficient_stack(|| { . project::normalize_with_depth( . self, 1,274 ( 0.00%) param_env, . cause.clone(), 1,274 ( 0.00%) recursion_depth, 1,274 ( 0.00%) placeholder_ty, . ) . }); 14,014 ( 0.00%) let placeholder_obligation = predicate_for_trait_def( . self.tcx(), 1,274 ( 0.00%) param_env, . cause.clone(), 2,548 ( 0.00%) trait_def_id, . recursion_depth, . normalized_ty, . &[], . ); 7,644 ( 0.00%) obligations.push(placeholder_obligation); . obligations . }) . }) . .collect() 7,296 ( 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>> { 67,545 ( 0.00%) match self.match_impl(impl_def_id, obligation) { 54,036 ( 0.00%) Ok(substs) => substs, . Err(()) => { . bug!( . "Impl {:?} was matchable against {:?} but now is not", . impl_def_id, . obligation . ); . } . } . } . 495,634 ( 0.01%) #[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) { 5,380 ( 0.00%) return Err(()); . } . . let placeholder_obligation = 163,772 ( 0.00%) self.infcx().replace_bound_vars_with_placeholders(obligation.predicate); 70,188 ( 0.00%) let placeholder_obligation_trait_ref = placeholder_obligation.trait_ref; . 116,980 ( 0.00%) let impl_substs = self.infcx.fresh_substs_for_item(obligation.cause.span, impl_def_id); . 46,792 ( 0.00%) let impl_trait_ref = impl_trait_ref.subst(self.tcx(), impl_substs); . . debug!(?impl_trait_ref); . 140,376 ( 0.00%) let Normalized { value: impl_trait_ref, obligations: mut nested_obligations } = 163,772 ( 0.00%) ensure_sufficient_stack(|| { . project::normalize_with_depth( . self, 23,396 ( 0.00%) obligation.param_env, . obligation.cause.clone(), 70,188 ( 0.00%) obligation.recursion_depth + 1, 46,792 ( 0.00%) impl_trait_ref, . ) . }); . . debug!(?impl_trait_ref, ?placeholder_obligation_trait_ref); . . let cause = ObligationCause::new( 23,396 ( 0.00%) obligation.cause.span, 46,792 ( 0.00%) obligation.cause.body_id, 210,564 ( 0.00%) ObligationCauseCode::MatchImpl(obligation.cause.clone(), impl_def_id), . ); . 46,792 ( 0.00%) let InferOk { obligations, .. } = self . .infcx 23,396 ( 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); . 65,007 ( 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"); 129,996 ( 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. . 78,258 ( 0.00%) iter::zip(obligation.predicate.skip_binder().trait_ref.substs, impl_trait_ref.substs).any( . |(obligation_arg, impl_arg)| { 253,696 ( 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`. 298,832 ( 0.01%) let simplified_obligation_ty = fast_reject::simplify_type( . self.tcx(), . obligation_ty, . SimplifyParams::Yes, . StripReferences::No, . ); 224,124 ( 0.00%) let simplified_impl_ty = fast_reject::simplify_type( . self.tcx(), . impl_ty, . SimplifyParams::No, . StripReferences::No, . ); . 112,062 ( 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. 2,468,430 ( 0.04%) 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) 2,194,160 ( 0.04%) } . . /// 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>, ()> { 309,707 ( 0.01%) self.infcx 274,270 ( 0.00%) .at(&obligation.cause, obligation.param_env) 929,121 ( 0.02%) .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 { 258 ( 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> { 560,040 ( 0.01%) let fresh_trait_pred = obligation.predicate.fold_with(&mut self.freshener); . . let dfn = previous_stack.cache.next_dfn(); 21,258 ( 0.00%) let depth = previous_stack.depth() + 1; 776,286 ( 0.01%) TraitObligationStack { . obligation, 459,614 ( 0.01%) 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> { 2,208 ( 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. 7,360 ( 0.00%) closure_trait_ref_and_return_type( . self.tcx(), 4,416 ( 0.00%) obligation.predicate.def_id(), 736 ( 0.00%) obligation.predicate.skip_binder().self_ty(), // (1) 2,944 ( 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. 310,707 ( 0.01%) #[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); 13,509 ( 0.00%) assert_eq!(predicates.parent, None); 40,527 ( 0.00%) let mut obligations = Vec::with_capacity(predicates.predicates.len()); . for (predicate, _) in predicates.predicates { . debug!(?predicate); 180,885 ( 0.00%) let predicate = normalize_with_depth_to( . self, . param_env, . cause.clone(), . recursion_depth, 36,177 ( 0.00%) predicate.subst(tcx, substs), . &mut obligations, . ); 361,770 ( 0.01%) 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. 33,351 ( 0.00%) if obligations.len() <= 1 { . // No possibility of duplicates. 9,506 ( 0.00%) } else if obligations.len() == 2 { . // Only two elements. Drop the second if they are equal. . if obligations[0] == obligations[1] { . obligations.truncate(1); . } . } else { . // Three or more elements. Use a general deduplication process. . let mut seen = FxHashSet::default(); 4,857 ( 0.00%) obligations.retain(|i| seen.insert(i.clone())); . } . 54,036 ( 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 { 58,900 ( 0.00%) parent_trait_pred: obligation.predicate, 28,234 ( 0.00%) parent_code: obligation.cause.clone_code(), . }; . let derived_code = variant(derived_cause); 175,484 ( 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> { 48,671 ( 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`. -- line 2438 ---------------------------------------- -- 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 { 103,416 ( 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 { 10,629 ( 0.00%) let result = self.dfn.get(); 42,516 ( 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 67,767 ( 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 { 26,088 ( 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>> { 40,743 ( 0.00%) let o = self.head?; 5,850 ( 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 ---------------------------------------- 1,190,776 ( 0.02%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/iter/adapters/filter_map.rs -------------------------------------------------------------------------------- Ir -- line 12 ---------------------------------------- . #[must_use = "iterators are lazy and do nothing unless consumed"] . #[stable(feature = "rust1", since = "1.0.0")] . #[derive(Clone)] . pub struct FilterMap { . iter: I, . f: F, . } . impl FilterMap { 105 ( 0.00%) pub(in crate::iter) fn new(iter: I, f: F) -> FilterMap { 68,418 ( 0.00%) FilterMap { iter, f } 54 ( 0.00%) } . } . . #[stable(feature = "core_impl_debug", since = "1.9.0")] . impl fmt::Debug for FilterMap { . fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { . f.debug_struct("FilterMap").field("iter", &self.iter).finish() . } . } . . fn filter_map_fold( . mut f: impl FnMut(T) -> Option, . mut fold: impl FnMut(Acc, B) -> Acc, . ) -> impl FnMut(Acc, T) -> Acc { 69,364 ( 0.00%) move |acc, item| match f(item) { 20,921 ( 0.00%) Some(x) => fold(acc, x), . None => acc, 432 ( 0.00%) } 15 ( 0.00%) } . . fn filter_map_try_fold<'a, T, B, Acc, R: Try>( . f: &'a mut impl FnMut(T) -> Option, . mut fold: impl FnMut(Acc, B) -> R + 'a, . ) -> impl FnMut(Acc, T) -> R + 'a { 4,398,772 ( 0.08%) move |acc, item| match f(item) { 4,626,675 ( 0.08%) Some(x) => fold(acc, x), . None => try { acc }, 36 ( 0.00%) } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl Iterator for FilterMap . where . F: FnMut(I::Item) -> Option, . { . type Item = B; . . #[inline] 1,992 ( 0.00%) fn next(&mut self) -> Option { 9,206 ( 0.00%) self.iter.find_map(&mut self.f) 2,042 ( 0.00%) } . . #[inline] . fn size_hint(&self) -> (usize, Option) { 380 ( 0.00%) let (_, upper) = self.iter.size_hint(); . (0, upper) // can't know a lower bound, due to the predicate . } . . #[inline] . fn try_fold(&mut self, init: Acc, fold: Fold) -> R . where . Self: Sized, . Fold: FnMut(Acc, Self::Item) -> R, . R: Try, . { 2,884 ( 0.00%) self.iter.try_fold(init, filter_map_try_fold(&mut self.f, fold)) . } . . #[inline] 120 ( 0.00%) fn fold(self, init: Acc, fold: Fold) -> Acc . where . Fold: FnMut(Acc, Self::Item) -> Acc, . { 12,230 ( 0.00%) self.iter.fold(init, filter_map_fold(self.f, fold)) 75 ( 0.00%) } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl DoubleEndedIterator for FilterMap . where . F: FnMut(I::Item) -> Option, . { . #[inline] -- line 94 ---------------------------------------- 2,615,504 ( 0.05%) -------------------------------------------------------------------------------- -- 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> { 160,180 ( 0.00%) fn reverse(&mut self, undo: UndoLog<'tcx>) { 676,004 ( 0.01%) match undo { 124,896 ( 0.00%) UndoLog::EqRelation(undo) => self.eq_relations.reverse(undo), 73,404 ( 0.00%) UndoLog::SubRelation(undo) => self.sub_relations.reverse(undo), 122,060 ( 0.00%) UndoLog::Values(undo) => self.values.reverse(undo), . } 320,360 ( 0.01%) } . } . . pub struct TypeVariableStorage<'tcx> { . values: sv::SnapshotVecStorage, . . /// Two variables are unified in `eq_relations` when we have a . /// constraint `?X == ?Y`. This table also stores, for each key, . /// the known value. -- line 66 ---------------------------------------- -- line 136 ---------------------------------------- . DynReturnFn, . LatticeVariable, . } . . pub(crate) struct TypeVariableData { . origin: TypeVariableOrigin, . } . 1,397,698 ( 0.02%) #[derive(Copy, Clone, Debug)] . pub enum TypeVariableValue<'tcx> { . Known { value: Ty<'tcx> }, . Unknown { universe: ty::UniverseIndex }, . } . . impl<'tcx> TypeVariableValue<'tcx> { . /// If this value is known, returns the type it is known to be. . /// Otherwise, `None`. . pub fn known(&self) -> Option> { 869,046 ( 0.02%) 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> { 117,150 ( 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 { 2,964 ( 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()); 14,462 ( 0.00%) self.eq_relations().union(a, b); 12,396 ( 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()); 25,430 ( 0.00%) self.sub_relations().union(a, b); . } . . /// Instantiates `vid` with the type `ty`. . /// . /// Precondition: `vid` must not have been previously instantiated. 330,605 ( 0.01%) pub fn instantiate(&mut self, vid: ty::TyVid, ty: Ty<'tcx>) { . let vid = self.root_var(vid); . debug_assert!(self.probe(vid).is_unknown()); . debug_assert!( . self.eq_relations().probe_value(vid).is_unknown(), . "instantiating type variable `{:?}` twice: new-value = {:?}, old-value={:?}", . vid, . ty, . self.eq_relations().probe_value(vid) . ); 462,847 ( 0.01%) self.eq_relations().union_value(vid, TypeVariableValue::Known { value: ty }); . . // Hack: we only need this so that `types_escaping_snapshot` . // can see what has been unified; see the Delegate impl for . // more details. . self.undo_log.push(Instantiate); 330,605 ( 0.01%) } . . /// Creates a new type variable. . /// . /// - `diverging`: indicates if this is a "diverging" type . /// variable, e.g., one created as the type of a `return` . /// expression. The code in this module doesn't care if a . /// variable is diverging, but the main Rust type-checker will . /// sometimes "unify" such variables with the `!` or `()` types. . /// - `origin`: indicates *why* the type variable was created. . /// The code in this module doesn't care, but it can be useful . /// for improving error messages. 423,462 ( 0.01%) pub fn new_var( . &mut self, . universe: ty::UniverseIndex, . origin: TypeVariableOrigin, . ) -> ty::TyVid { 635,193 ( 0.01%) let eq_key = self.eq_relations().new_key(TypeVariableValue::Unknown { universe }); . 352,885 ( 0.01%) let sub_key = self.sub_relations().new_key(()); 70,577 ( 0.00%) assert_eq!(eq_key.vid, sub_key); . 635,193 ( 0.01%) let index = self.values().push(TypeVariableData { origin }); 282,308 ( 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 494,039 ( 0.01%) } . . /// Returns the number of type variables created thus far. . pub fn num_vars(&self) -> usize { 3,225 ( 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 { 263,847 ( 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) 1,275 ( 0.00%) pub fn sub_root_var(&mut self, vid: ty::TyVid) -> ty::TyVid { 215,814 ( 0.00%) self.sub_relations().find(vid) 2,550 ( 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. 3,149,455 ( 0.05%) pub fn probe(&mut self, vid: ty::TyVid) -> TypeVariableValue<'tcx> { . self.inlined_probe(vid) 3,149,455 ( 0.05%) } . . /// An always-inlined variant of `probe`, for very hot call sites. . #[inline(always)] . pub fn inlined_probe(&mut self, vid: ty::TyVid) -> TypeVariableValue<'tcx> { 2,093,606 ( 0.04%) 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> { 1,661,316 ( 0.03%) match *t.kind() { 510,548 ( 0.01%) ty::Infer(ty::TyVar(v)) => match self.probe(v) { . TypeVariableValue::Unknown { .. } => t, . TypeVariableValue::Known { value } => value, . }, . _ => t, . } . } . . #[inline] -- line 323 ---------------------------------------- -- line 324 ---------------------------------------- . fn values( . &mut self, . ) -> sv::SnapshotVec, &mut InferCtxtUndoLogs<'tcx>> { . self.storage.values.with_log(self.undo_log) . } . . #[inline] . fn eq_relations(&mut self) -> super::UnificationTable<'_, 'tcx, TyVidEqKey<'tcx>> { 2,740,573 ( 0.05%) self.storage.eq_relations.with_log(self.undo_log) . } . . #[inline] . fn sub_relations(&mut self) -> super::UnificationTable<'_, 'tcx, ty::TyVid> { 158,476 ( 0.00%) self.storage.sub_relations.with_log(self.undo_log) . } . . /// Returns a range of the type variables created during the snapshot. 16,125 ( 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()); 19,350 ( 0.00%) ( . range.start..range.end, . (range.start.as_usize()..range.end.as_usize()) . .map(|index| self.storage.values.get(index).origin) . .collect(), . ) 19,350 ( 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); 122,408 ( 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: 2,208,313 ( 0.04%) 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 { 274,764 ( 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? . ( 2,056 ( 0.00%) &TypeVariableValue::Unknown { universe: universe1 }, 2,056 ( 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); 8,224 ( 0.00%) Ok(TypeVariableValue::Unknown { universe }) . } . } . } . } 157,480 ( 0.00%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_trait_selection/src/traits/select/candidate_assembly.rs -------------------------------------------------------------------------------- Ir -- line 22 ---------------------------------------- . . use super::BuiltinImplConditions; . use super::IntercrateAmbiguityCause; . use super::OverflowError; . use super::SelectionCandidate::{self, *}; . use super::{EvaluatedCandidate, SelectionCandidateSet, SelectionContext, TraitObligationStack}; . . impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> { 710,792 ( 0.01%) #[instrument(level = "debug", skip(self))] 888,490 ( 0.02%) pub(super) fn candidate_from_obligation<'o>( . &mut self, . stack: &TraitObligationStack<'o, 'tcx>, . ) -> SelectionResult<'tcx, SelectionCandidate<'tcx>> { . // Watch out for overflow. This intentionally bypasses (and does . // not update) the cache. 177,698 ( 0.00%) self.check_recursion_limit(&stack.obligation, &stack.obligation)?; . . // Check the cache. Note that we freshen the trait-ref . // separately rather than using `stack.fresh_trait_ref` -- . // this is because we want the unbound variables to be . // replaced with fresh types starting from index 0. 799,641 ( 0.01%) let cache_fresh_trait_pred = self.infcx.freshen(stack.obligation.predicate); . debug!(?cache_fresh_trait_pred); . debug_assert!(!stack.obligation.predicate.has_escaping_bound_vars()); . 818,423 ( 0.01%) if let Some(c) = 266,547 ( 0.00%) self.check_candidate_cache(stack.obligation.param_env, cache_fresh_trait_pred) . { . debug!(candidate = ?c, "CACHE HIT"); . return c; . } . . // If no match, compute result and insert into cache. . // . // FIXME(nikomatsakis) -- this cache is not taking into . // account cycles that may have occurred in forming the . // candidate. I don't know of any specific problems that . // result but it seems awfully suspicious. 258,354 ( 0.00%) let (candidate, dep_node) = 129,177 ( 0.00%) self.in_task(|this| this.candidate_from_obligation_no_cache(stack)); . . debug!(?candidate, "CACHE MISS"); . self.insert_candidate_cache( 86,118 ( 0.00%) stack.obligation.param_env, 172,236 ( 0.00%) cache_fresh_trait_pred, . dep_node, . candidate.clone(), . ); 516,708 ( 0.01%) candidate . } . 430,590 ( 0.01%) fn candidate_from_obligation_no_cache<'o>( . &mut self, . stack: &TraitObligationStack<'o, 'tcx>, . ) -> SelectionResult<'tcx, SelectionCandidate<'tcx>> { 10 ( 0.00%) if let Some(conflict) = self.is_knowable(stack) { . debug!("coherence stage: not knowable"); . if self.intercrate_ambiguity_causes.is_some() { . debug!("evaluate_stack: intercrate_ambiguity_causes is some"); . // Heuristics: show the diagnostics when there are no candidates in crate. . if let Ok(candidate_set) = self.assemble_candidates(stack) { . let mut no_candidates_apply = true; . . for c in candidate_set.vec.iter() { -- line 85 ---------------------------------------- -- line 109 ---------------------------------------- . debug!(?cause, "evaluate_stack: pushing cause"); . self.intercrate_ambiguity_causes.as_mut().unwrap().push(cause); . } . } . } . return Ok(None); . } . 129,177 ( 0.00%) let candidate_set = self.assemble_candidates(stack)?; . 86,118 ( 0.00%) if candidate_set.ambiguous { . debug!("candidate set contains ambig"); 3,694 ( 0.00%) return Ok(None); . } . . let candidates = candidate_set.vec; . . debug!(?stack, ?candidates, "assembled {} candidates", candidates.len()); . . // At this point, we know that each of the entries in the . // candidate set is *individually* applicable. Now we have to . // figure out if they contain mutual incompatibilities. This . // frequently arises if we have an unconstrained input type -- . // for example, we are looking for `$0: Eq` where `$0` is some . // unconstrained type variable. In that case, we'll get a . // candidate which assumes $0 == int, one that assumes `$0 == . // usize`, etc. This spells an ambiguity. . 164,848 ( 0.00%) let mut candidates = self.filter_impls(candidates, stack.obligation); . . // If there is more than one candidate, first winnow them down . // by considering extra conditions (nested obligations and so . // forth). We don't winnow if there is exactly one . // candidate. This is a relatively minor distinction but it . // can lead to better inference and error-reporting. An . // example would be if there was an impl: . // . // impl Vec { fn push_clone(...) { ... } } . // . // and we were to see some code `foo.push_clone()` where `boo` . // is a `Vec` and `Bar` does not implement `Clone`. If . // we were to winnow, we'd wind up with zero candidates. . // Instead, we select the right impl now but report "`Bar` does . // not implement `Clone`". 82,424 ( 0.00%) if candidates.len() == 1 { 108,288 ( 0.00%) return self.filter_reservation_impls(candidates.pop().unwrap(), stack.obligation); . } . . // Winnow, but record the exact outcome of evaluation, which . // is needed for specialization. Propagate overflow if it occurs. 30,696 ( 0.00%) let mut candidates = candidates . .into_iter() . .map(|c| match self.evaluate_candidate(stack, &c) { 4,998 ( 0.00%) Ok(eval) if eval.may_apply() => { 5,696 ( 0.00%) Ok(Some(EvaluatedCandidate { candidate: c, evaluation: eval })) . } . Ok(_) => Ok(None), . Err(OverflowError::Canonical) => Err(Overflow), . Err(OverflowError::ErrorReporting) => Err(ErrorReporting), . }) . .flat_map(Result::transpose) . .collect::, _>>()?; . . debug!(?stack, ?candidates, "winnowed to {} candidates", candidates.len()); . 5,116 ( 0.00%) let needs_infer = stack.obligation.predicate.has_infer_types_or_consts(); . 15,348 ( 0.00%) let sized_predicate = self.tcx().lang_items().sized_trait() 10,232 ( 0.00%) == Some(stack.obligation.predicate.skip_binder().def_id()); . . // If there are STILL multiple candidates, we can further . // reduce the list by dropping duplicates -- including . // resolving specializations. 15,348 ( 0.00%) if candidates.len() > 1 { . let mut i = 0; 780 ( 0.00%) while i < candidates.len() { 1,051 ( 0.00%) let is_dup = (0..candidates.len()).filter(|&j| i != j).any(|j| { . self.candidate_should_be_dropped_in_favor_of( . sized_predicate, . &candidates[i], . &candidates[j], . needs_infer, . ) . }); . if is_dup { . debug!(candidate = ?candidates[i], "Dropping candidate #{}/{}", i, candidates.len()); . candidates.swap_remove(i); . } else { . debug!(candidate = ?candidates[i], "Retaining candidate #{}/{}", i, candidates.len()); 774 ( 0.00%) i += 1; . . // If there are *STILL* multiple candidates, give up . // and report ambiguity. 1,161 ( 0.00%) if i > 1 { . debug!("multiple matches, ambig"); 1,536 ( 0.00%) return Err(Ambiguous( . candidates . .into_iter() 329 ( 0.00%) .filter_map(|c| match c.candidate { . SelectionCandidate::ImplCandidate(def_id) => Some(def_id), . _ => None, . }) . .collect(), . )); . } . } . } -- line 215 ---------------------------------------- -- line 219 ---------------------------------------- . // that we know of, anyway. Note that in the case where there . // are unbound type variables within the obligation, it might . // be the case that you could still satisfy the obligation . // from another crate by instantiating the type variables with . // a type from another crate that does have an impl. This case . // is checked for in `evaluate_stack` (and hence users . // who might care about this case, like coherence, should use . // that function). 4,988 ( 0.00%) if candidates.is_empty() { . // If there's an error type, 'downgrade' our result from . // `Err(Unimplemented)` to `Ok(None)`. This helps us avoid . // emitting additional spurious errors, since we're guaranteed . // to have emitted at least one. 9,472 ( 0.00%) if stack.obligation.references_error() { . debug!("no results for error type, treating as ambiguous"); 4,736 ( 0.00%) return Ok(None); . } . return Err(Unimplemented); . } . . // Just one candidate left. 756 ( 0.00%) self.filter_reservation_impls(candidates.pop().unwrap().candidate, stack.obligation) 397,507 ( 0.01%) } . 344,472 ( 0.01%) #[instrument(skip(self, stack), level = "debug")] 430,590 ( 0.01%) pub(super) fn assemble_candidates<'o>( . &mut self, . stack: &TraitObligationStack<'o, 'tcx>, . ) -> Result, SelectionError<'tcx>> { 43,059 ( 0.00%) let TraitObligationStack { obligation, .. } = *stack; 818,121 ( 0.01%) let obligation = &Obligation { 43,059 ( 0.00%) param_env: obligation.param_env, . cause: obligation.cause.clone(), 129,177 ( 0.00%) recursion_depth: obligation.recursion_depth, 516,708 ( 0.01%) predicate: self.infcx().resolve_vars_if_possible(obligation.predicate), . }; . 89,486 ( 0.00%) if obligation.predicate.skip_binder().self_ty().is_ty_var() { . // Self is a type variable (e.g., `_: AsRef`). . // . // This is somewhat problematic, as the current scheme can't really . // handle it turning to be a projection. This does end up as truly . // ambiguous in most cases anyway. . // . // Take the fast path out - this also improves . // performance by preventing assemble_candidates_from_impls from . // matching every impl for this trait. 5,037 ( 0.00%) return Ok(SelectionCandidateSet { vec: vec![], ambiguous: true }); . } . 124,140 ( 0.00%) let mut candidates = SelectionCandidateSet { vec: Vec::new(), ambiguous: false }; . . // The only way to prove a NotImplemented(T: Foo) predicate is via a negative impl. . // There are no compiler built-in rules for this. 82,760 ( 0.00%) if obligation.polarity() == ty::ImplPolarity::Negative { . self.assemble_candidates_for_trait_alias(obligation, &mut candidates); . self.assemble_candidates_from_impls(obligation, &mut candidates); . } else { 41,380 ( 0.00%) self.assemble_candidates_for_trait_alias(obligation, &mut candidates); . . // Other bounds. Consider both in-scope bounds from fn decl . // and applicable impls. There is a certain set of precedence rules here. 248,280 ( 0.00%) let def_id = obligation.predicate.def_id(); 41,380 ( 0.00%) let lang_items = self.tcx().lang_items(); . 131,760 ( 0.00%) if lang_items.copy_trait() == Some(def_id) { . debug!(obligation_self_ty = ?obligation.predicate.skip_binder().self_ty()); . . // User-defined copy impls are permitted, but only for . // structs and enums. 3,810 ( 0.00%) self.assemble_candidates_from_impls(obligation, &mut candidates); . . // For other types, we'll use the builtin rules. 15,240 ( 0.00%) let copy_conditions = self.copy_clone_conditions(obligation); 38,100 ( 0.00%) self.assemble_builtin_bound_candidates(copy_conditions, &mut candidates); 112,714 ( 0.00%) } else if lang_items.discriminant_kind_trait() == Some(def_id) { . // `DiscriminantKind` is automatically implemented for every type. . candidates.vec.push(DiscriminantKindCandidate); 112,704 ( 0.00%) } else if lang_items.pointee_trait() == Some(def_id) { . // `Pointee` is automatically implemented for every type. . candidates.vec.push(PointeeCandidate); 151,136 ( 0.00%) } else if lang_items.sized_trait() == Some(def_id) { . // Sized is never implementable by end-users, it is . // always automatically computed. 19,216 ( 0.00%) let sized_conditions = self.sized_conditions(obligation); 192,160 ( 0.00%) self.assemble_builtin_bound_candidates(sized_conditions, &mut candidates); 56,154 ( 0.00%) } else if lang_items.unsize_trait() == Some(def_id) { 1,098 ( 0.00%) self.assemble_candidates_for_unsizing(obligation, &mut candidates); 53,490 ( 0.00%) } else if lang_items.drop_trait() == Some(def_id) . && obligation.predicate.skip_binder().constness == ty::BoundConstness::ConstIfConst . { 135 ( 0.00%) self.assemble_const_drop_candidates(obligation, &mut candidates); . } else { 53,612 ( 0.00%) if lang_items.clone_trait() == Some(def_id) { . // Same builtin conditions as `Copy`, i.e., every type which has builtin support . // for `Copy` also has builtin support for `Clone`, and tuples/arrays of `Clone` . // types have builtin support for `Clone`. 568 ( 0.00%) let clone_conditions = self.copy_clone_conditions(obligation); 1,278 ( 0.00%) self.assemble_builtin_bound_candidates(clone_conditions, &mut candidates); . } . 17,776 ( 0.00%) self.assemble_generator_candidates(obligation, &mut candidates); 17,776 ( 0.00%) self.assemble_closure_candidates(obligation, &mut candidates); 17,776 ( 0.00%) self.assemble_fn_pointer_candidates(obligation, &mut candidates); 53,328 ( 0.00%) self.assemble_candidates_from_impls(obligation, &mut candidates); . self.assemble_candidates_from_object_ty(obligation, &mut candidates); . } . . self.assemble_candidates_from_projected_tys(obligation, &mut candidates); . self.assemble_candidates_from_caller_bounds(stack, &mut candidates)?; . // Auto implementations have lower priority, so we only . // consider triggering a default if there is no other impl that can apply. 41,380 ( 0.00%) if candidates.vec.is_empty() { . self.assemble_candidates_from_auto_impls(obligation, &mut candidates); . } . } . debug!("candidate list size: {}", candidates.vec.len()); 537,940 ( 0.01%) Ok(candidates) . } . . #[tracing::instrument(level = "debug", skip(self, candidates))] . fn assemble_candidates_from_projected_tys( . &mut self, . obligation: &TraitObligation<'tcx>, . candidates: &mut SelectionCandidateSet<'tcx>, . ) { . // Before we go into the whole placeholder thing, just . // quickly check if the self-type is a projection at all. 365,808 ( 0.01%) match obligation.predicate.skip_binder().trait_ref.self_ty().kind() { . ty::Projection(_) | ty::Opaque(..) => {} . ty::Infer(ty::TyVar(_)) => { . span_bug!( . obligation.cause.span, . "Self=_ should have been handled by assemble_candidates" . ); . } . _ => return, . } . 6,622 ( 0.00%) let result = self . .infcx 3,311 ( 0.00%) .probe(|_| self.match_projection_obligation_against_definition_bounds(obligation)); . 6,622 ( 0.00%) candidates.vec.extend(result.into_iter().map(ProjectionCandidate)); . } . . /// Given an obligation like ``, searches the obligations that the caller . /// supplied to find out whether it is listed among them. . /// . /// Never affects the inference environment. . #[tracing::instrument(level = "debug", skip(self, stack, candidates))] . fn assemble_candidates_from_caller_bounds<'o>( . &mut self, . stack: &TraitObligationStack<'o, 'tcx>, . candidates: &mut SelectionCandidateSet<'tcx>, . ) -> Result<(), SelectionError<'tcx>> { . debug!(?stack.obligation); . 165,520 ( 0.00%) let all_bounds = stack . .obligation . .param_env . .caller_bounds() . .iter() 1,538,654 ( 0.03%) .filter_map(|o| o.to_opt_poly_trait_pred()); . . // Micro-optimization: filter out predicates relating to different traits. . let matching_bounds = 9,219,888 ( 0.16%) all_bounds.filter(|p| p.def_id() == stack.obligation.predicate.def_id()); . . // Keep only those bounds which may apply, and propagate overflow if it occurs. . for bound in matching_bounds { . // FIXME(oli-obk): it is suspicious that we are dropping the constness and . // polarity here. 548,540 ( 0.01%) let wc = self.evaluate_where_clause(stack, bound.map_bound(|t| t.trait_ref))?; 1,097,080 ( 0.02%) if wc.may_apply() { . candidates.vec.push(ParamCandidate(bound)); . } . } . . Ok(()) . } . 142,208 ( 0.00%) fn assemble_generator_candidates( . &mut self, . obligation: &TraitObligation<'tcx>, . candidates: &mut SelectionCandidateSet<'tcx>, . ) { 213,312 ( 0.00%) if self.tcx().lang_items().gen_trait() != Some(obligation.predicate.def_id()) { . return; . } . . // Okay to skip binder because the substs on generator types never . // touch bound regions, they just capture the in-scope . // type/region parameters. . let self_ty = obligation.self_ty().skip_binder(); . match self_ty.kind() { -- line 414 ---------------------------------------- -- line 418 ---------------------------------------- . candidates.vec.push(GeneratorCandidate); . } . ty::Infer(ty::TyVar(_)) => { . debug!("assemble_generator_candidates: ambiguous self-type"); . candidates.ambiguous = true; . } . _ => {} . } 124,432 ( 0.00%) } . . /// Checks for the artificial impl that the compiler will create for an obligation like `X : . /// FnMut<..>` where `X` is a closure type. . /// . /// Note: the type parameters on a closure candidate are modeled as *output* type . /// parameters and hence do not affect whether this trait is a match or not. They will be . /// unified during the confirmation step. 124,432 ( 0.00%) fn assemble_closure_candidates( . &mut self, . obligation: &TraitObligation<'tcx>, . candidates: &mut SelectionCandidateSet<'tcx>, . ) { 195,536 ( 0.00%) let kind = match self.tcx().fn_trait_kind_from_lang_item(obligation.predicate.def_id()) { . Some(k) => k, . None => { . return; . } . }; . . // Okay to skip binder because the substs on closure types never . // touch bound regions, they just capture the in-scope . // type/region parameters 4,282 ( 0.00%) match *obligation.self_ty().skip_binder().kind() { 477 ( 0.00%) ty::Closure(_, closure_substs) => { . debug!(?kind, ?obligation, "assemble_unboxed_candidates"); 1,908 ( 0.00%) match self.infcx.closure_kind(closure_substs) { . Some(closure_kind) => { . debug!(?closure_kind, "assemble_unboxed_candidates"); 2,385 ( 0.00%) if closure_kind.extends(kind) { . candidates.vec.push(ClosureCandidate); . } . } . None => { . debug!("assemble_unboxed_candidates: closure_kind not yet known"); . candidates.vec.push(ClosureCandidate); . } . } . } . ty::Infer(ty::TyVar(_)) => { . debug!("assemble_unboxed_closure_candidates: ambiguous self-type"); . candidates.ambiguous = true; . } . _ => {} . } 106,656 ( 0.00%) } . . /// Implements one of the `Fn()` family for a fn pointer. 159,984 ( 0.00%) fn assemble_fn_pointer_candidates( . &mut self, . obligation: &TraitObligation<'tcx>, . candidates: &mut SelectionCandidateSet<'tcx>, . ) { . // We provide impl of all fn traits for fn pointers. 177,760 ( 0.00%) if self.tcx().fn_trait_kind_from_lang_item(obligation.predicate.def_id()).is_none() { . return; . } . . // Okay to skip binder because what we are inspecting doesn't involve bound regions. 1,496 ( 0.00%) let self_ty = obligation.self_ty().skip_binder(); 4,756 ( 0.00%) match *self_ty.kind() { . ty::Infer(ty::TyVar(_)) => { . debug!("assemble_fn_pointer_candidates: ambiguous self-type"); . candidates.ambiguous = true; // Could wind up being a fn() type. . } . // Provide an impl, but only for suitable `fn` pointers. . ty::FnPtr(_) => { . if let ty::FnSig { . unsafety: hir::Unsafety::Normal, -- line 494 ---------------------------------------- -- line 496 ---------------------------------------- . c_variadic: false, . .. . } = self_ty.fn_sig(self.tcx()).skip_binder() . { . candidates.vec.push(FnPointerCandidate { is_const: false }); . } . } . // Provide an impl for suitable functions, rejecting `#[target_feature]` functions (RFC 2396). 240 ( 0.00%) ty::FnDef(def_id, _) => { 360 ( 0.00%) if let ty::FnSig { . unsafety: hir::Unsafety::Normal, . abi: Abi::Rust, . c_variadic: false, . .. 240 ( 0.00%) } = self_ty.fn_sig(self.tcx()).skip_binder() . { 218 ( 0.00%) if self.tcx().codegen_fn_attrs(def_id).target_features.is_empty() { . candidates . .vec 480 ( 0.00%) .push(FnPointerCandidate { is_const: self.tcx().is_const_fn(def_id) }); . } . } . } . _ => {} . } 142,208 ( 0.00%) } . . /// Searches for impls that might apply to `obligation`. 215,860 ( 0.00%) fn assemble_candidates_from_impls( . &mut self, . obligation: &TraitObligation<'tcx>, . candidates: &mut SelectionCandidateSet<'tcx>, . ) { . debug!(?obligation, "assemble_candidates_from_impls"); . . // Essentially any user-written impl will match with an error type, . // so creating `ImplCandidates` isn't useful. However, we might . // end up finding a candidate elsewhere (e.g. a `BuiltinCandidate` for `Sized) . // This helps us avoid overflow: see issue #72839 . // Since compilation is already guaranteed to fail, this is just . // to try to show the 'nicest' possible errors to the user. . // We don't check for errors in the `ParamEnv` - in practice, . // it seems to cause us to be overly aggressive in deciding . // to give up searching for candidates, leading to spurious errors. 43,172 ( 0.00%) if obligation.predicate.references_error() { . return; . } . 64,758 ( 0.00%) self.tcx().for_each_relevant_impl( 172,688 ( 0.00%) obligation.predicate.def_id(), . obligation.predicate.skip_binder().trait_ref.self_ty(), 107,930 ( 0.00%) |impl_def_id| { 100,616 ( 0.00%) self.infcx.probe(|_| { 108,090 ( 0.00%) if let Ok(_substs) = self.match_impl(impl_def_id, obligation) { 16,314 ( 0.00%) candidates.vec.push(ImplCandidate(impl_def_id)); . } . }); . }, . ); 172,688 ( 0.00%) } . . fn assemble_candidates_from_auto_impls( . &mut self, . obligation: &TraitObligation<'tcx>, . candidates: &mut SelectionCandidateSet<'tcx>, . ) { . // Okay to skip binder here because the tests we do below do not involve bound regions. 4,904 ( 0.00%) let self_ty = obligation.self_ty().skip_binder(); . debug!(?self_ty, "assemble_candidates_from_auto_impls"); . 29,424 ( 0.00%) let def_id = obligation.predicate.def_id(); . 19,616 ( 0.00%) if self.tcx().trait_is_auto(def_id) { . match self_ty.kind() { . ty::Dynamic(..) => { . // For object types, we don't know what the closed . // over types are. This means we conservatively . // say nothing; a candidate may be added by . // `assemble_candidates_from_object_ty`. . } . ty::Foreign(..) => { -- line 576 ---------------------------------------- -- line 625 ---------------------------------------- . obligation: &TraitObligation<'tcx>, . candidates: &mut SelectionCandidateSet<'tcx>, . ) { . debug!( . self_ty = ?obligation.self_ty().skip_binder(), . "assemble_candidates_from_object_ty", . ); . 142,208 ( 0.00%) self.infcx.probe(|_snapshot| { . // The code below doesn't care about regions, and the . // self-ty here doesn't escape this probe, so just erase . // any LBR. 17,776 ( 0.00%) let self_ty = self.tcx().erase_late_bound_regions(obligation.self_ty()); 88,882 ( 0.00%) let poly_trait_ref = match self_ty.kind() { . ty::Dynamic(ref data, ..) => { . if data.auto_traits().any(|did| did == obligation.predicate.def_id()) { . debug!( . "assemble_candidates_from_object_ty: matched builtin bound, \ . pushing candidate" . ); . candidates.vec.push(BuiltinObjectCandidate); . return; -- line 646 ---------------------------------------- -- line 739 ---------------------------------------- . }; . . let def_id = data.principal_def_id()?; . . return Some((normalized_ty, def_id)); . } . . /// Searches for unsizing that might apply to `obligation`. 5,490 ( 0.00%) fn assemble_candidates_for_unsizing( . &mut self, . obligation: &TraitObligation<'tcx>, . candidates: &mut SelectionCandidateSet<'tcx>, . ) { . // We currently never consider higher-ranked obligations e.g. . // `for<'a> &'a T: Unsize` to be implemented. This is not . // because they are a priori invalid, and we could potentially add support . // for them later, it's just that there isn't really a strong need for it. -- line 755 ---------------------------------------- -- line 758 ---------------------------------------- . // . // That said, one might try to write a fn with a where clause like . // for<'a> Foo<'a, T>: Unsize> . // where the `'a` is kind of orthogonal to the relevant part of the `Unsize`. . // Still, you'd be more likely to write that where clause as . // T: Trait . // so it seems ok if we (conservatively) fail to accept that `Unsize` . // obligation above. Should be possible to extend this in the future. 2,745 ( 0.00%) let source = match obligation.self_ty().no_bound_vars() { 549 ( 0.00%) Some(t) => t, . None => { . // Don't add any candidates if there are bound regions. . return; . } . }; 1,647 ( 0.00%) let target = obligation.predicate.skip_binder().trait_ref.substs.type_at(1); . . debug!(?source, ?target, "assemble_candidates_for_unsizing"); . 7,294 ( 0.00%) match (source.kind(), target.kind()) { . // Trait+Kx+'a -> Trait+Ky+'b (upcasts). . (&ty::Dynamic(ref data_a, ..), &ty::Dynamic(ref data_b, ..)) => { . // Upcast coercions permit several things: . // . // 1. Dropping auto traits, e.g., `Foo + Send` to `Foo` . // 2. Tightening the region bound, e.g., `Foo + 'a` to `Foo + 'b` if `'a: 'b` . // 3. Tightening trait to its super traits, eg. `Foo` to `Bar` if `Foo: Bar` . // . // Note that neither of the first two of these changes requires any . // change at runtime. The third needs to change pointer metadata at runtime. . // . // We always perform upcasting coercions when we can because of reason . // #2 (region bounds). 3 ( 0.00%) let auto_traits_compatible = data_b . .auto_traits() . // All of a's auto traits need to be in b's auto traits. 2 ( 0.00%) .all(|b| data_a.auto_traits().any(|a| a == b)); 2 ( 0.00%) if auto_traits_compatible { 5 ( 0.00%) let principal_def_id_a = data_a.principal_def_id(); 3 ( 0.00%) let principal_def_id_b = data_b.principal_def_id(); 3 ( 0.00%) if principal_def_id_a == principal_def_id_b { . // no cyclic . candidates.vec.push(BuiltinUnsizeCandidate); . } else if principal_def_id_a.is_some() && principal_def_id_b.is_some() { . // not casual unsizing, now check whether this is trait upcasting coercion. . let principal_a = data_a.principal().unwrap(); . let target_trait_did = principal_def_id_b.unwrap(); . let source_trait_ref = principal_a.with_self_ty(self.tcx(), source); . if let Some((deref_output_ty, deref_output_trait_did)) = self -- line 806 ---------------------------------------- -- line 843 ---------------------------------------- . candidates.vec.push(BuiltinUnsizeCandidate); . } . . // Ambiguous handling is below `T` -> `Trait`, because inference . // variables can still implement `Unsize` and nested . // obligations will have the final say (likely deferred). . (&ty::Infer(ty::TyVar(_)), _) | (_, &ty::Infer(ty::TyVar(_))) => { . debug!("assemble_candidates_for_unsizing: ambiguous"); 336 ( 0.00%) candidates.ambiguous = true; . } . . // `[T; n]` -> `[T]` . (&ty::Array(..), &ty::Slice(_)) => { . candidates.vec.push(BuiltinUnsizeCandidate); . } . . // `Struct` -> `Struct` 108 ( 0.00%) (&ty::Adt(def_id_a, _), &ty::Adt(def_id_b, _)) if def_id_a.is_struct() => { 150 ( 0.00%) if def_id_a == def_id_b { . candidates.vec.push(BuiltinUnsizeCandidate); . } . } . . // `(.., T)` -> `(.., U)` . (&ty::Tuple(tys_a), &ty::Tuple(tys_b)) => { . if tys_a.len() == tys_b.len() { . candidates.vec.push(BuiltinUnsizeCandidate); . } . } . . _ => {} . }; 4,392 ( 0.00%) } . 579,320 ( 0.01%) #[tracing::instrument(level = "debug", skip(self, obligation, candidates))] . fn assemble_candidates_for_trait_alias( . &mut self, . obligation: &TraitObligation<'tcx>, . candidates: &mut SelectionCandidateSet<'tcx>, . ) { . // Okay to skip binder here because the tests we do below do not involve bound regions. 82,760 ( 0.00%) let self_ty = obligation.self_ty().skip_binder(); . debug!(?self_ty); . 331,040 ( 0.01%) let def_id = obligation.predicate.def_id(); . 165,520 ( 0.00%) if self.tcx().is_trait_alias(def_id) { . candidates.vec.push(TraitAliasCandidate(def_id)); . } . } . . /// Assembles the trait which are built-in to the language itself: . /// `Copy`, `Clone` and `Sized`. 185,344 ( 0.00%) #[tracing::instrument(level = "debug", skip(self, candidates))] . fn assemble_builtin_bound_candidates( . &mut self, . conditions: BuiltinImplConditions<'tcx>, . candidates: &mut SelectionCandidateSet<'tcx>, . ) { 99,934 ( 0.00%) match conditions { . BuiltinImplConditions::Where(nested) => { . candidates . .vec . .push(BuiltinCandidate { has_nested: !nested.skip_binder().is_empty() }); . } . BuiltinImplConditions::None => {} . BuiltinImplConditions::Ambiguous => { . candidates.ambiguous = true; . } . } . } . 216 ( 0.00%) fn assemble_const_drop_candidates( . &mut self, . obligation: &TraitObligation<'tcx>, . candidates: &mut SelectionCandidateSet<'tcx>, . ) { . // If the predicate is `~const Drop` in a non-const environment, we don't actually need . // to check anything. We'll short-circuit checking any obligations in confirmation, too. . if obligation.param_env.constness() == hir::Constness::NotConst { . candidates.vec.push(ConstDropCandidate(None)); -- line 923 ---------------------------------------- -- line 979 ---------------------------------------- . candidates.vec.push(ConstDropCandidate(None)); . } . } . . ty::Infer(_) => { . candidates.ambiguous = true; . } . } 216 ( 0.00%) } . } 3,698,435 ( 0.06%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_span/src/lib.rs -------------------------------------------------------------------------------- Ir -- line 84 ---------------------------------------- . pub struct SessionGlobals { . symbol_interner: symbol::Interner, . span_interner: Lock, . hygiene_data: Lock, . source_map: Lock>>, . } . . impl SessionGlobals { 12 ( 0.00%) pub fn new(edition: Edition) -> SessionGlobals { 50 ( 0.00%) SessionGlobals { 2 ( 0.00%) symbol_interner: symbol::Interner::fresh(), . span_interner: Lock::new(span_encoding::SpanInterner::default()), 6 ( 0.00%) hygiene_data: Lock::new(hygiene::HygieneData::new(edition)), . source_map: Lock::new(None), . } 10 ( 0.00%) } . } . . #[inline] . pub fn create_session_globals_then(edition: Edition, f: impl FnOnce() -> R) -> R { 1 ( 0.00%) assert!( . !SESSION_GLOBALS.is_set(), . "SESSION_GLOBALS should never be overwritten! \ . Use another thread if you need another SessionGlobals" . ); 3 ( 0.00%) let session_globals = SessionGlobals::new(edition); 7 ( 0.00%) SESSION_GLOBALS.set(&session_globals, f) 1 ( 0.00%) } . . #[inline] . pub fn set_session_globals_then(session_globals: &SessionGlobals, f: impl FnOnce() -> R) -> R { . assert!( . !SESSION_GLOBALS.is_set(), . "SESSION_GLOBALS should never be overwritten! \ . Use another thread if you need another SessionGlobals" . ); -- line 119 ---------------------------------------- -- line 120 ---------------------------------------- . SESSION_GLOBALS.set(session_globals, f) . } . . #[inline] . pub fn create_default_session_if_not_set_then(f: F) -> R . where . F: FnOnce(&SessionGlobals) -> R, . { 4 ( 0.00%) create_session_if_not_set_then(edition::DEFAULT_EDITION, f) . } . . #[inline] . pub fn create_session_if_not_set_then(edition: Edition, f: F) -> R . where . F: FnOnce(&SessionGlobals) -> R, . { 1 ( 0.00%) if !SESSION_GLOBALS.is_set() { 3 ( 0.00%) let session_globals = SessionGlobals::new(edition); 11 ( 0.00%) SESSION_GLOBALS.set(&session_globals, || SESSION_GLOBALS.with(f)) 1 ( 0.00%) } else { . SESSION_GLOBALS.with(f) . } . } . . #[inline] . pub fn with_session_globals(f: F) -> R . where . F: FnOnce(&SessionGlobals) -> R, . { 1,915,565 ( 0.03%) SESSION_GLOBALS.with(f) . } . . #[inline] . pub fn create_default_session_globals_then(f: impl FnOnce() -> R) -> R { . create_session_globals_then(edition::DEFAULT_EDITION, f) . } . . // If this ever becomes non thread-local, `decode_syntax_context` . // and `decode_expn_id` will need to be updated to handle concurrent . // deserialization. . scoped_tls::scoped_thread_local!(static SESSION_GLOBALS: SessionGlobals); . . // FIXME: We should use this enum or something like it to get rid of the . // use of magic `/rust/1.x/...` paths across the board. 112 ( 0.00%) #[derive(Debug, Eq, PartialEq, Clone, Ord, PartialOrd)] 1,106 ( 0.00%) #[derive(Decodable)] . pub enum RealFileName { 13 ( 0.00%) LocalPath(PathBuf), . /// For remapped paths (namely paths into libstd that have been mapped . /// to the appropriate spot on the local host's file system, and local file . /// system paths that have been remapped with `FilePathMapping`), . Remapped { . /// `local_path` is the (host-dependent) local path to the file. This is . /// None if the file was imported from another crate . local_path: Option, . /// `virtual_name` is the stable path rustc will store internally within -- line 175 ---------------------------------------- -- line 179 ---------------------------------------- . } . . impl Hash for RealFileName { . fn hash(&self, state: &mut H) { . // To prevent #70924 from happening again we should only hash the . // remapped (virtualized) path if that exists. This is because . // virtualized paths to sysroot crates (/rust/$hash or /rust/$version) . // remain stable even if the corresponding local_path changes 3,113 ( 0.00%) self.remapped_path_if_available().hash(state) . } . } . . // This is functionally identical to #[derive(Encodable)], with the exception of . // an added assert statement . impl Encodable for RealFileName { . fn encode(&self, encoder: &mut S) -> Result<(), S::Error> { 36 ( 0.00%) encoder.emit_enum(|encoder| match *self { . RealFileName::LocalPath(ref local_path) => { 144 ( 0.00%) encoder.emit_enum_variant("LocalPath", 0, 1, |encoder| { . encoder.emit_enum_variant_arg(true, |encoder| local_path.encode(encoder))?; . Ok(()) . }) . } . . RealFileName::Remapped { ref local_path, ref virtual_name } => encoder . .emit_enum_variant("Remapped", 1, 2, |encoder| { . // For privacy and build reproducibility, we must not embed host-dependant path in artifacts -- line 205 ---------------------------------------- -- line 213 ---------------------------------------- . } . } . . impl RealFileName { . /// Returns the path suitable for reading from the file system on the local host, . /// if this information exists. . /// Avoid embedding this in build artifacts; see `remapped_path_if_available()` for that. . pub fn local_path(&self) -> Option<&Path> { 2 ( 0.00%) match self { . RealFileName::LocalPath(p) => Some(p), . RealFileName::Remapped { local_path: p, virtual_name: _ } => { . p.as_ref().map(PathBuf::as_path) . } . } . } . . /// Returns the path suitable for reading from the file system on the local host, . /// if this information exists. . /// Avoid embedding this in build artifacts; see `remapped_path_if_available()` for that. 2 ( 0.00%) pub fn into_local_path(self) -> Option { 2 ( 0.00%) match self { . RealFileName::LocalPath(p) => Some(p), . RealFileName::Remapped { local_path: p, virtual_name: _ } => p, . } 3 ( 0.00%) } . . /// Returns the path suitable for embedding into build artifacts. This would still . /// be a local path if it has not been remapped. A remapped path will not correspond . /// to a valid file system path: see `local_path_if_available()` for something that . /// is more likely to return paths into the local host file system. . pub fn remapped_path_if_available(&self) -> &Path { 2,432 ( 0.00%) match self { . RealFileName::LocalPath(p) . | RealFileName::Remapped { local_path: _, virtual_name: p } => &p, . } 19 ( 0.00%) } . . /// Returns the path suitable for reading from the file system on the local host, . /// if this information exists. Otherwise returns the remapped name. . /// Avoid embedding this in build artifacts; see `remapped_path_if_available()` for that. . pub fn local_path_if_available(&self) -> &Path { 18 ( 0.00%) match self { . RealFileName::LocalPath(path) . | RealFileName::Remapped { local_path: None, virtual_name: path } . | RealFileName::Remapped { local_path: Some(path), virtual_name: _ } => path, . } . } . . pub fn to_string_lossy(&self, display_pref: FileNameDisplayPreference) -> Cow<'_, str> { 18 ( 0.00%) match display_pref { . FileNameDisplayPreference::Local => self.local_path_if_available().to_string_lossy(), . FileNameDisplayPreference::Remapped => { . self.remapped_path_if_available().to_string_lossy() . } . } . } . } . . /// Differentiates between real files and common virtual files. 6,909 ( 0.00%) #[derive(Debug, Eq, PartialEq, Clone, Ord, PartialOrd, Hash)] 6,910 ( 0.00%) #[derive(Decodable, Encodable)] . pub enum FileName { . Real(RealFileName), . /// Call to `quote!`. 3 ( 0.00%) QuoteExpansion(u64), . /// Command line. . Anon(u64), . /// Hack in `src/librustc_ast/parse.rs`. . // FIXME(jseyfried) . MacroExpansion(u64), 5 ( 0.00%) ProcMacroSourceCode(u64), . /// Strings provided as `--cfg [cfgspec]` stored in a `crate_cfg`. . CfgSpec(u64), . /// Strings provided as crate attributes in the CLI. . CliCrateAttr(u64), . /// Custom sources for explicit parser calls from plugins and drivers. . Custom(String), . DocTest(PathBuf, isize), . /// Post-substitution inline assembly from LLVM. . InlineAsm(u64), . } . . impl From for FileName { 126 ( 0.00%) fn from(p: PathBuf) -> Self { 36 ( 0.00%) assert!(!p.to_string_lossy().ends_with('>')); 108 ( 0.00%) FileName::Real(RealFileName::LocalPath(p)) 126 ( 0.00%) } . } . 2 ( 0.00%) #[derive(Clone, Copy, Eq, PartialEq, Hash, Debug)] . pub enum FileNameDisplayPreference { . Remapped, . Local, . } . . pub struct FileNameDisplay<'a> { . inner: &'a FileName, . display_pref: FileNameDisplayPreference, . } . . impl fmt::Display for FileNameDisplay<'_> { 72 ( 0.00%) fn fmt(&self, fmt: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { . use FileName::*; 108 ( 0.00%) match *self.inner { . Real(ref name) => { 108 ( 0.00%) write!(fmt, "{}", name.to_string_lossy(self.display_pref)) . } . QuoteExpansion(_) => write!(fmt, ""), . MacroExpansion(_) => write!(fmt, ""), . Anon(_) => write!(fmt, ""), . ProcMacroSourceCode(_) => write!(fmt, ""), . CfgSpec(_) => write!(fmt, ""), . CliCrateAttr(_) => write!(fmt, ""), . Custom(ref s) => write!(fmt, "<{}>", s), . DocTest(ref path, _) => write!(fmt, "{}", path.display()), . InlineAsm(_) => write!(fmt, ""), . } 90 ( 0.00%) } . } . . impl FileNameDisplay<'_> { . pub fn to_string_lossy(&self) -> Cow<'_, str> { . match self.inner { . FileName::Real(ref inner) => inner.to_string_lossy(self.display_pref), . _ => Cow::from(format!("{}", self)), . } . } . } . . impl FileName { . pub fn is_real(&self) -> bool { . use FileName::*; 1,146 ( 0.00%) match *self { . Real(_) => true, . Anon(_) . | MacroExpansion(_) . | ProcMacroSourceCode(_) . | CfgSpec(_) . | CliCrateAttr(_) . | Custom(_) . | QuoteExpansion(_) -- line 353 ---------------------------------------- -- line 357 ---------------------------------------- . } . . pub fn prefer_remapped(&self) -> FileNameDisplay<'_> { . FileNameDisplay { inner: self, display_pref: FileNameDisplayPreference::Remapped } . } . . // This may include transient local filesystem information. . // Must not be embedded in build outputs. 18 ( 0.00%) pub fn prefer_local(&self) -> FileNameDisplay<'_> { . FileNameDisplay { inner: self, display_pref: FileNameDisplayPreference::Local } 36 ( 0.00%) } . . pub fn display(&self, display_pref: FileNameDisplayPreference) -> FileNameDisplay<'_> { . FileNameDisplay { inner: self, display_pref } . } . . pub fn macro_expansion_source_code(src: &str) -> FileName { . let mut hasher = StableHasher::new(); . src.hash(&mut hasher); -- line 375 ---------------------------------------- -- line 377 ---------------------------------------- . } . . pub fn anon_source_code(src: &str) -> FileName { . let mut hasher = StableHasher::new(); . src.hash(&mut hasher); . FileName::Anon(hasher.finish()) . } . 25 ( 0.00%) pub fn proc_macro_source_code(src: &str) -> FileName { . let mut hasher = StableHasher::new(); . src.hash(&mut hasher); 10 ( 0.00%) FileName::ProcMacroSourceCode(hasher.finish()) 25 ( 0.00%) } . 15 ( 0.00%) pub fn cfg_spec_source_code(src: &str) -> FileName { . let mut hasher = StableHasher::new(); . src.hash(&mut hasher); 6 ( 0.00%) FileName::QuoteExpansion(hasher.finish()) 15 ( 0.00%) } . . pub fn cli_crate_attr_source_code(src: &str) -> FileName { . let mut hasher = StableHasher::new(); . src.hash(&mut hasher); . FileName::CliCrateAttr(hasher.finish()) . } . . pub fn doc_test_source_code(path: PathBuf, line: isize) -> FileName { -- line 403 ---------------------------------------- -- line 423 ---------------------------------------- . /// that the length of the span is equal to `span.hi - span.lo`; there may be space in the . /// [`BytePos`] range between files. . /// . /// `SpanData` is public because `Span` uses a thread-local interner and can't be . /// sent to other threads, but some pieces of performance infra run in a separate thread. . /// Using `Span` is generally preferred. . #[derive(Clone, Copy, Hash, PartialEq, Eq)] . pub struct SpanData { 15 ( 0.00%) pub lo: BytePos, 15 ( 0.00%) pub hi: BytePos, . /// Information about where the macro came from, if this piece of . /// code was created by a macro expansion. 42 ( 0.00%) pub ctxt: SyntaxContext, 14 ( 0.00%) pub parent: Option, . } . . // Order spans by position in the file. . impl Ord for SpanData { . fn cmp(&self, other: &Self) -> Ordering { . let SpanData { . lo: s_lo, . hi: s_hi, -- line 444 ---------------------------------------- -- line 485 ---------------------------------------- . } . #[inline] . pub fn with_parent(&self, parent: Option) -> Span { . Span::new(self.lo, self.hi, self.ctxt, parent) . } . /// Returns `true` if this is a dummy span with any hygienic context. . #[inline] . pub fn is_dummy(self) -> bool { 540,510 ( 0.01%) self.lo.0 == 0 && self.hi.0 == 0 . } . /// Returns `true` if `self` fully encloses `other`. . pub fn contains(self, other: Self) -> bool { 939 ( 0.00%) self.lo <= other.lo && other.hi <= self.hi . } . } . . // The interner is pointed to by a thread local value which is only set on the main thread . // with parallelization is disabled. So we don't allow `Span` to transfer between threads . // to avoid panics and other errors, even though it would be memory safe to do so. . #[cfg(not(parallel_compiler))] . impl !Send for Span {} . #[cfg(not(parallel_compiler))] . impl !Sync for Span {} . . impl PartialOrd for Span { 55,936 ( 0.00%) fn partial_cmp(&self, rhs: &Self) -> Option { 41,952 ( 0.00%) PartialOrd::partial_cmp(&self.data(), &rhs.data()) 55,936 ( 0.00%) } . } . impl Ord for Span { . fn cmp(&self, rhs: &Self) -> Ordering { . Ord::cmp(&self.data(), &rhs.data()) . } . } . . /// A collection of `Span`s. -- line 520 ---------------------------------------- -- line 532 ---------------------------------------- . } . . impl Span { . #[inline] . pub fn lo(self) -> BytePos { . self.data().lo . } . #[inline] 137,430 ( 0.00%) pub fn with_lo(self, lo: BytePos) -> Span { . self.data().with_lo(lo) 91,620 ( 0.00%) } . #[inline] 32,724 ( 0.00%) pub fn hi(self) -> BytePos { . self.data().hi 32,724 ( 0.00%) } . #[inline] 84,051 ( 0.00%) pub fn with_hi(self, hi: BytePos) -> Span { . self.data().with_hi(hi) 56,034 ( 0.00%) } . #[inline] . pub fn ctxt(self) -> SyntaxContext { . self.data_untracked().ctxt . } . #[inline] 7,210 ( 0.00%) pub fn with_ctxt(self, ctxt: SyntaxContext) -> Span { . self.data_untracked().with_ctxt(ctxt) 4,326 ( 0.00%) } . #[inline] . pub fn parent(self) -> Option { . self.data().parent . } . #[inline] 36 ( 0.00%) pub fn with_parent(self, ctxt: Option) -> Span { . self.data().with_parent(ctxt) 24 ( 0.00%) } . . /// Returns `true` if this is a dummy span with any hygienic context. . #[inline] . pub fn is_dummy(self) -> bool { . self.data_untracked().is_dummy() . } . . /// Returns `true` if this span comes from a macro or desugaring. . #[inline] 51 ( 0.00%) pub fn from_expansion(self) -> bool { . self.ctxt() != SyntaxContext::root() 34 ( 0.00%) } . . /// Returns `true` if `span` originates in a derive-macro's expansion. . pub fn in_derive_expansion(self) -> bool { . matches!(self.ctxt().outer_expn_data().kind, ExpnKind::Macro(MacroKind::Derive, _)) . } . . /// Gate suggestions that would not be appropriate in a context the user didn't write. . pub fn can_be_used_for_suggestions(self) -> bool { -- line 586 ---------------------------------------- -- line 600 ---------------------------------------- . /// Returns a new span representing an empty span at the beginning of this span. . #[inline] . pub fn shrink_to_lo(self) -> Span { . let span = self.data_untracked(); . span.with_hi(span.lo) . } . /// Returns a new span representing an empty span at the end of this span. . #[inline] 96 ( 0.00%) pub fn shrink_to_hi(self) -> Span { . let span = self.data_untracked(); . span.with_lo(span.hi) 64 ( 0.00%) } . . #[inline] . /// Returns `true` if `hi == lo`. . pub fn is_empty(self) -> bool { . let span = self.data_untracked(); . span.hi == span.lo . } . . /// Returns `self` if `self` is not the dummy span, and `other` otherwise. . pub fn substitute_dummy(self, other: Span) -> Span { . if self.is_dummy() { other } else { self } . } . . /// Returns `true` if `self` fully encloses `other`. 2,817 ( 0.00%) pub fn contains(self, other: Span) -> bool { . let span = self.data(); . let other = other.data(); . span.contains(other) 1,878 ( 0.00%) } . . /// Returns `true` if `self` touches `other`. . pub fn overlaps(self, other: Span) -> bool { . let span = self.data(); . let other = other.data(); . span.lo < other.hi && other.lo < span.hi . } . -- line 638 ---------------------------------------- -- line 663 ---------------------------------------- . /// The `Span` for the tokens in the previous macro expansion from which `self` was generated, . /// if any. . pub fn parent_callsite(self) -> Option { . let expn_data = self.ctxt().outer_expn_data(); . if !expn_data.is_root() { Some(expn_data.call_site) } else { None } . } . . /// Walk down the expansion ancestors to find a span that's contained within `outer`. 2,210 ( 0.00%) pub fn find_ancestor_inside(mut self, outer: Span) -> Option { 1,105 ( 0.00%) while !outer.contains(self) { . self = self.parent_callsite()?; . } . Some(self) 2,431 ( 0.00%) } . . /// Edition of the crate from which this span came. 40,128 ( 0.00%) pub fn edition(self) -> edition::Edition { . self.ctxt().edition() 26,752 ( 0.00%) } . . #[inline] . pub fn rust_2015(self) -> bool { 9,230 ( 0.00%) self.edition() == edition::Edition::Edition2015 . } . . #[inline] . pub fn rust_2018(self) -> bool { 2,907 ( 0.00%) self.edition() >= edition::Edition::Edition2018 . } . . #[inline] . pub fn rust_2021(self) -> bool { 5,253 ( 0.00%) self.edition() >= edition::Edition::Edition2021 . } . . /// Returns the source callee. . /// . /// Returns `None` if the supplied span has no expansion trace, . /// else returns the `ExpnData` for the macro definition . /// corresponding to the source callsite. . pub fn source_callee(self) -> Option { -- line 703 ---------------------------------------- -- line 707 ---------------------------------------- . } . let expn_data = self.ctxt().outer_expn_data(); . if !expn_data.is_root() { Some(source_callee(expn_data)) } else { None } . } . . /// Checks if a span is "internal" to a macro in which `#[unstable]` . /// items can be used (that is, a macro marked with . /// `#[allow_internal_unstable]`). 420 ( 0.00%) pub fn allows_unstable(self, feature: Symbol) -> bool { 84 ( 0.00%) self.ctxt() . .outer_expn_data() . .allow_internal_unstable . .map_or(false, |features| features.iter().any(|&f| f == feature)) 336 ( 0.00%) } . . /// Checks if this span arises from a compiler desugaring of kind `kind`. 30,877 ( 0.00%) pub fn is_desugaring(self, kind: DesugaringKind) -> bool { 26,466 ( 0.00%) match self.ctxt().outer_expn_data().kind { . ExpnKind::Desugaring(k) => k == kind, . _ => false, . } 22,055 ( 0.00%) } . . /// Returns the compiler desugaring that created this span, or `None` . /// if this span is not from a desugaring. 170 ( 0.00%) pub fn desugaring_kind(self) -> Option { 204 ( 0.00%) match self.ctxt().outer_expn_data().kind { . ExpnKind::Desugaring(k) => Some(k), . _ => None, . } 136 ( 0.00%) } . . /// Checks if a span is "internal" to a macro in which `unsafe` . /// can be used without triggering the `unsafe_code` lint. . // (that is, a macro marked with `#[allow_internal_unsafe]`). 12 ( 0.00%) pub fn allows_unsafe(self) -> bool { 3 ( 0.00%) self.ctxt().outer_expn_data().allow_internal_unsafe 12 ( 0.00%) } . . pub fn macro_backtrace(mut self) -> impl Iterator { . let mut prev_span = DUMMY_SP; . std::iter::from_fn(move || { . loop { . let expn_data = self.ctxt().outer_expn_data(); . if expn_data.is_root() { . return None; -- line 752 ---------------------------------------- -- line 767 ---------------------------------------- . . /// Returns a `Span` that would enclose both `self` and `end`. . /// . /// ```text . /// ____ ___ . /// self lorem ipsum end . /// ^^^^^^^^^^^^^^^^^^^^ . /// ``` 966,669 ( 0.02%) pub fn to(self, end: Span) -> Span { . let span_data = self.data(); . let end_data = end.data(); . // FIXME(jseyfried): `self.ctxt` should always equal `end.ctxt` here (cf. issue #23480). . // Return the macro span on its own to avoid weird diagnostic output. It is preferable to . // have an incomplete span than a completely nonsensical one. 170,088 ( 0.00%) if span_data.ctxt != end_data.ctxt { 5,670 ( 0.00%) if span_data.ctxt == SyntaxContext::root() { . return end; 5,094 ( 0.00%) } else if end_data.ctxt == SyntaxContext::root() { . return self; . } . // Both spans fall within a macro. . // FIXME(estebank): check if it is the *same* macro. . } . Span::new( . cmp::min(span_data.lo, end_data.lo), . cmp::max(span_data.hi, end_data.hi), . if span_data.ctxt == SyntaxContext::root() { end_data.ctxt } else { span_data.ctxt }, 579,754 ( 0.01%) if span_data.parent == end_data.parent { span_data.parent } else { None }, . ) 790,911 ( 0.01%) } . . /// Returns a `Span` between the end of `self` to the beginning of `end`. . /// . /// ```text . /// ____ ___ . /// self lorem ipsum end . /// ^^^^^^^^^^^^^ . /// ``` 4,609 ( 0.00%) pub fn between(self, end: Span) -> Span { . let span = self.data(); . let end = end.data(); . Span::new( . span.hi, . end.lo, . if end.ctxt == SyntaxContext::root() { end.ctxt } else { span.ctxt }, 2,933 ( 0.00%) if span.parent == end.parent { span.parent } else { None }, . ) 3,352 ( 0.00%) } . . /// Returns a `Span` from the beginning of `self` until the beginning of `end`. . /// . /// ```text . /// ____ ___ . /// self lorem ipsum end . /// ^^^^^^^^^^^^^^^^^ . /// ``` 9,185 ( 0.00%) pub fn until(self, end: Span) -> Span { . // Most of this function's body is copied from `to`. . // We can't just do `self.to(end.shrink_to_lo())`, . // because to also does some magic where it uses min/max so . // it can handle overlapping spans. Some advanced mis-use of . // `until` with different ctxts makes this visible. . let span_data = self.data(); . let end_data = end.data(); . // FIXME(jseyfried): `self.ctxt` should always equal `end.ctxt` here (cf. issue #23480). . // Return the macro span on its own to avoid weird diagnostic output. It is preferable to . // have an incomplete span than a completely nonsensical one. 1,670 ( 0.00%) if span_data.ctxt != end_data.ctxt { . if span_data.ctxt == SyntaxContext::root() { . return end; . } else if end_data.ctxt == SyntaxContext::root() { . return self; . } . // Both spans fall within a macro. . // FIXME(estebank): check if it is the *same* macro. . } . Span::new( . span_data.lo, . end_data.lo, . if end_data.ctxt == SyntaxContext::root() { end_data.ctxt } else { span_data.ctxt }, 5,845 ( 0.00%) if span_data.parent == end_data.parent { span_data.parent } else { None }, . ) 7,515 ( 0.00%) } . 88 ( 0.00%) pub fn from_inner(self, inner: InnerSpan) -> Span { . let span = self.data(); . Span::new( . span.lo + BytePos::from_usize(inner.start), . span.lo + BytePos::from_usize(inner.end), . span.ctxt, . span.parent, . ) 56 ( 0.00%) } . . /// Equivalent of `Span::def_site` from the proc macro API, . /// except that the location is taken from the `self` span. . pub fn with_def_site_ctxt(self, expn_id: ExpnId) -> Span { 1,760 ( 0.00%) self.with_ctxt_from_mark(expn_id, Transparency::Opaque) . } . . /// Equivalent of `Span::call_site` from the proc macro API, . /// except that the location is taken from the `self` span. . pub fn with_call_site_ctxt(self, expn_id: ExpnId) -> Span { 22 ( 0.00%) self.with_ctxt_from_mark(expn_id, Transparency::Transparent) . } . . /// Equivalent of `Span::mixed_site` from the proc macro API, . /// except that the location is taken from the `self` span. . pub fn with_mixed_site_ctxt(self, expn_id: ExpnId) -> Span { 20 ( 0.00%) self.with_ctxt_from_mark(expn_id, Transparency::SemiTransparent) . } . . /// Produces a span with the same location as `self` and context produced by a macro with the . /// given ID and transparency, assuming that macro was defined directly and not produced by . /// some other macro (which is the case for built-in and procedural macros). 10,812 ( 0.00%) pub fn with_ctxt_from_mark(self, expn_id: ExpnId, transparency: Transparency) -> Span { . self.with_ctxt(SyntaxContext::root().apply_mark(expn_id, transparency)) 6,307 ( 0.00%) } . . #[inline] . pub fn apply_mark(self, expn_id: ExpnId, transparency: Transparency) -> Span { . let span = self.data(); 450,225 ( 0.01%) span.with_ctxt(span.ctxt.apply_mark(expn_id, transparency)) . } . . #[inline] . pub fn remove_mark(&mut self) -> ExpnId { 60 ( 0.00%) let mut span = self.data(); 60 ( 0.00%) let mark = span.ctxt.remove_mark(); 240 ( 0.00%) *self = Span::new(span.lo, span.hi, span.ctxt, span.parent); . mark . } . . #[inline] . pub fn adjust(&mut self, expn_id: ExpnId) -> Option { . let mut span = self.data(); . let mark = span.ctxt.adjust(expn_id); . *self = Span::new(span.lo, span.hi, span.ctxt, span.parent); . mark . } . . #[inline] 109,530 ( 0.00%) pub fn normalize_to_macros_2_0_and_adjust(&mut self, expn_id: ExpnId) -> Option { 73,020 ( 0.00%) let mut span = self.data(); 59,190 ( 0.00%) let mark = span.ctxt.normalize_to_macros_2_0_and_adjust(expn_id); 109,530 ( 0.00%) *self = Span::new(span.lo, span.hi, span.ctxt, span.parent); . mark 120,040 ( 0.00%) } . . #[inline] . pub fn glob_adjust(&mut self, expn_id: ExpnId, glob_span: Span) -> Option> { 136 ( 0.00%) let mut span = self.data(); 204 ( 0.00%) let mark = span.ctxt.glob_adjust(expn_id, glob_span); 544 ( 0.00%) *self = Span::new(span.lo, span.hi, span.ctxt, span.parent); . mark . } . . #[inline] 4,401 ( 0.00%) pub fn reverse_glob_adjust( . &mut self, . expn_id: ExpnId, . glob_span: Span, . ) -> Option> { 5,010 ( 0.00%) let mut span = self.data(); 6,597 ( 0.00%) let mark = span.ctxt.reverse_glob_adjust(expn_id, glob_span); 12,705 ( 0.00%) *self = Span::new(span.lo, span.hi, span.ctxt, span.parent); . mark 4,890 ( 0.00%) } . . #[inline] 207,256 ( 0.00%) pub fn normalize_to_macros_2_0(self) -> Span { . let span = self.data(); . span.with_ctxt(span.ctxt.normalize_to_macros_2_0()) 181,349 ( 0.00%) } . . #[inline] . pub fn normalize_to_macro_rules(self) -> Span { . let span = self.data(); . span.with_ctxt(span.ctxt.normalize_to_macro_rules()) . } . } . -- line 948 ---------------------------------------- -- line 958 ---------------------------------------- . . /// What label should we attach to this span (if any)? . pub label: Option, . } . . impl Default for Span { . fn default() -> Self { . DUMMY_SP 2 ( 0.00%) } . } . . impl Encodable for Span { . default fn encode(&self, s: &mut E) -> Result<(), E::Error> { . let span = self.data(); . s.emit_struct(false, |s| { . s.emit_struct_field("lo", true, |s| span.lo.encode(s))?; . s.emit_struct_field("hi", false, |s| span.hi.encode(s)) -- line 974 ---------------------------------------- -- line 990 ---------------------------------------- . /// any spans that are debug-printed during the closure's execution. . /// . /// Normally, the global `TyCtxt` is used to retrieve the `SourceMap` . /// (see `rustc_interface::callbacks::span_debug1`). However, some parts . /// of the compiler (e.g. `rustc_parse`) may debug-print `Span`s before . /// a `TyCtxt` is available. In this case, we fall back to . /// the `SourceMap` provided to this function. If that is not available, . /// we fall back to printing the raw `Span` field values. 9 ( 0.00%) pub fn with_source_map T>(source_map: Lrc, f: F) -> T { . with_session_globals(|session_globals| { 2 ( 0.00%) *session_globals.source_map.borrow_mut() = Some(source_map); . }); . struct ClearSourceMap; . impl Drop for ClearSourceMap { . fn drop(&mut self) { . with_session_globals(|session_globals| { 1 ( 0.00%) session_globals.source_map.borrow_mut().take(); . }); . } . } . . let _guard = ClearSourceMap; 4 ( 0.00%) f() 8 ( 0.00%) } . . pub fn debug_with_source_map( . span: Span, . f: &mut fmt::Formatter<'_>, . source_map: &SourceMap, . ) -> fmt::Result { . write!(f, "{} ({:?})", source_map.span_to_diagnostic_string(span), span.ctxt()) . } -- line 1021 ---------------------------------------- -- line 1047 ---------------------------------------- . } . . impl MultiSpan { . #[inline] . pub fn new() -> MultiSpan { . MultiSpan { primary_spans: vec![], span_labels: vec![] } . } . 20 ( 0.00%) pub fn from_span(primary_span: Span) -> MultiSpan { 4,095 ( 0.00%) MultiSpan { primary_spans: vec![primary_span], span_labels: vec![] } 20 ( 0.00%) } . . pub fn from_spans(mut vec: Vec) -> MultiSpan { . vec.sort(); 260 ( 0.00%) MultiSpan { primary_spans: vec, span_labels: vec![] } . } . 48 ( 0.00%) pub fn push_span_label(&mut self, span: Span, label: String) { 16 ( 0.00%) self.span_labels.push((span, label)); 40 ( 0.00%) } . . /// Selects the first primary span (if any). . pub fn primary_span(&self) -> Option { . self.primary_spans.first().cloned() 575 ( 0.00%) } . . /// Returns all primary spans. . pub fn primary_spans(&self) -> &[Span] { . &self.primary_spans 52 ( 0.00%) } . . /// Returns `true` if any of the primary spans are displayable. . pub fn has_primary_spans(&self) -> bool { . self.primary_spans.iter().any(|sp| !sp.is_dummy()) . } . . /// Returns `true` if this contains only a dummy primary span with any hygienic context. . pub fn is_dummy(&self) -> bool { -- line 1084 ---------------------------------------- -- line 1139 ---------------------------------------- . . /// Returns `true` if any of the span labels is displayable. . pub fn has_span_labels(&self) -> bool { . self.span_labels.iter().any(|(sp, _)| !sp.is_dummy()) . } . } . . impl From for MultiSpan { 4,075 ( 0.00%) fn from(span: Span) -> MultiSpan { . MultiSpan::from_span(span) 4,075 ( 0.00%) } . } . . impl From> for MultiSpan { 260 ( 0.00%) fn from(spans: Vec) -> MultiSpan { 208 ( 0.00%) MultiSpan::from_spans(spans) 260 ( 0.00%) } . } . . /// Identifies an offset of a multi-byte character in a `SourceFile`. 44 ( 0.00%) #[derive(Copy, Clone, Encodable, Decodable, Eq, PartialEq, Debug)] . pub struct MultiByteChar { . /// The absolute offset of the character in the `SourceMap`. . pub pos: BytePos, . /// The number of bytes, `>= 2`. . pub bytes: u8, . } . . /// Identifies an offset of a non-narrow character in a `SourceFile`. 356 ( 0.00%) #[derive(Copy, Clone, Encodable, Decodable, Eq, PartialEq, Debug)] . pub enum NonNarrowChar { . /// Represents a zero-width character. . ZeroWidth(BytePos), . /// Represents a wide (full-width) character. . Wide(BytePos), . /// Represents a tab character, represented visually with a width of 4 characters. . Tab(BytePos), . } . . impl NonNarrowChar { . fn new(pos: BytePos, width: usize) -> Self { 16 ( 0.00%) match width { . 0 => NonNarrowChar::ZeroWidth(pos), . 2 => NonNarrowChar::Wide(pos), . 4 => NonNarrowChar::Tab(pos), . _ => panic!("width {} given for non-narrow character", width), . } . } . . /// Returns the absolute offset of the character in the `SourceMap`. -- line 1188 ---------------------------------------- -- line 1201 ---------------------------------------- . } . } . } . . impl Add for NonNarrowChar { . type Output = Self; . . fn add(self, rhs: BytePos) -> Self { 540 ( 0.00%) match self { . NonNarrowChar::ZeroWidth(pos) => NonNarrowChar::ZeroWidth(pos + rhs), . NonNarrowChar::Wide(pos) => NonNarrowChar::Wide(pos + rhs), . NonNarrowChar::Tab(pos) => NonNarrowChar::Tab(pos + rhs), . } . } . } . . impl Sub for NonNarrowChar { . type Output = Self; . 156 ( 0.00%) fn sub(self, rhs: BytePos) -> Self { 540 ( 0.00%) match self { . NonNarrowChar::ZeroWidth(pos) => NonNarrowChar::ZeroWidth(pos - rhs), . NonNarrowChar::Wide(pos) => NonNarrowChar::Wide(pos - rhs), . NonNarrowChar::Tab(pos) => NonNarrowChar::Tab(pos - rhs), . } 468 ( 0.00%) } . } . . /// Identifies an offset of a character that was normalized away from `SourceFile`. . #[derive(Copy, Clone, Encodable, Decodable, Eq, PartialEq, Debug)] . pub struct NormalizedPos { . /// The absolute offset of the character in the `SourceMap`. . pub pos: BytePos, . /// The difference between original and normalized string at position. . pub diff: u32, . } . 54 ( 0.00%) #[derive(PartialEq, Eq, Clone, Debug)] . pub enum ExternalSource { . /// No external source has to be loaded, since the `SourceFile` represents a local crate. . Unneeded, . Foreign { . kind: ExternalSourceKind, . /// This SourceFile's byte-offset within the source_map of its original crate. . original_start_pos: BytePos, . /// The end of this SourceFile within the source_map of its original crate. -- line 1246 ---------------------------------------- -- line 1257 ---------------------------------------- . AbsentOk, . /// A failed attempt has been made to load the external source. . AbsentErr, . Unneeded, . } . . impl ExternalSource { . pub fn get_source(&self) -> Option<&Lrc> { 561 ( 0.00%) match self { . ExternalSource::Foreign { kind: ExternalSourceKind::Present(ref src), .. } => Some(src), . _ => None, . } . } . } . . #[derive(Debug)] . pub struct OffsetOverflowError; . 1,122 ( 0.00%) #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Encodable, Decodable)] . pub enum SourceFileHashAlgorithm { . Md5, . Sha1, . Sha256, . } . . impl FromStr for SourceFileHashAlgorithm { . type Err = (); -- line 1283 ---------------------------------------- -- line 1290 ---------------------------------------- . _ => Err(()), . } . } . } . . rustc_data_structures::impl_stable_hash_via_hash!(SourceFileHashAlgorithm); . . /// The hash of the on-disk source file used for debug info. 108 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, Debug)] 2,244 ( 0.00%) #[derive(HashStable_Generic, Encodable, Decodable)] . pub struct SourceFileHash { . pub kind: SourceFileHashAlgorithm, . value: [u8; 32], . } . . impl SourceFileHash { . pub fn new(kind: SourceFileHashAlgorithm, src: &str) -> SourceFileHash { 1 ( 0.00%) let mut hash = SourceFileHash { kind, value: Default::default() }; . let len = hash.hash_len(); . let value = &mut hash.value[..len]; . let data = src.as_bytes(); . match kind { . SourceFileHashAlgorithm::Md5 => { 81 ( 0.00%) value.copy_from_slice(&Md5::digest(data)); . } . SourceFileHashAlgorithm::Sha1 => { . value.copy_from_slice(&Sha1::digest(data)); . } . SourceFileHashAlgorithm::Sha256 => { . value.copy_from_slice(&Sha256::digest(data)); . } . } . hash . } . . /// Check if the stored hash matches the hash of the string. . pub fn matches(&self, src: &str) -> bool { 1 ( 0.00%) Self::new(self.kind, src) == *self . } . . /// The bytes of the hash. . pub fn hash_bytes(&self) -> &[u8] { . let len = self.hash_len(); . &self.value[..len] . } . . fn hash_len(&self) -> usize { 80 ( 0.00%) match self.kind { . SourceFileHashAlgorithm::Md5 => 16, . SourceFileHashAlgorithm::Sha1 => 20, . SourceFileHashAlgorithm::Sha256 => 32, . } . } . } . . /// A single source in the [`SourceMap`]. 1,044 ( 0.00%) #[derive(Clone)] . pub struct SourceFile { . /// The name of the file that the source came from. Source that doesn't . /// originate from files has names between angle brackets by convention . /// (e.g., ``). . pub name: FileName, . /// The complete source code. 18 ( 0.00%) pub src: Option>, . /// The source code's hash. . pub src_hash: SourceFileHash, . /// The external source code (used for external crates, which will have a `None` . /// value as `self.src`. . pub external_src: Lock, . /// The start position of this source in the `SourceMap`. . pub start_pos: BytePos, . /// The end position of this source in the `SourceMap`. -- line 1361 ---------------------------------------- -- line 1364 ---------------------------------------- . pub lines: Vec, . /// Locations of multi-byte characters in the source code. . pub multibyte_chars: Vec, . /// Width of characters that are not narrow in the source code. . pub non_narrow_chars: Vec, . /// Locations of characters removed during normalization. . pub normalized_pos: Vec, . /// A hash of the filename, used for speeding up hashing in incremental compilation. 18 ( 0.00%) pub name_hash: u128, . /// Indicates which crate this `SourceFile` was imported from. 18 ( 0.00%) pub cnum: CrateNum, . } . . impl Encodable for SourceFile { . fn encode(&self, s: &mut S) -> Result<(), S::Error> { . s.emit_struct(false, |s| { . s.emit_struct_field("name", true, |s| self.name.encode(s))?; . s.emit_struct_field("src_hash", false, |s| self.src_hash.encode(s))?; . s.emit_struct_field("start_pos", false, |s| self.start_pos.encode(s))?; . s.emit_struct_field("end_pos", false, |s| self.end_pos.encode(s))?; . s.emit_struct_field("lines", false, |s| { . let lines = &self.lines[..]; . // Store the length. . s.emit_u32(lines.len() as u32)?; . 72 ( 0.00%) if !lines.is_empty() { . // In order to preserve some space, we exploit the fact that . // the lines list is sorted and individual lines are . // probably not that long. Because of that we can store lines . // as a difference list, using as little space as possible . // for the differences. . let max_line_length = if lines.len() == 1 { . 0 . } else { -- line 1397 ---------------------------------------- -- line 1399 ---------------------------------------- . .array_windows() . .map(|&[fst, snd]| snd - fst) . .map(|bp| bp.to_usize()) . .max() . .unwrap() . }; . . let bytes_per_diff: u8 = match max_line_length { 36 ( 0.00%) 0..=0xFF => 1, 4 ( 0.00%) 0x100..=0xFFFF => 2, . _ => 4, . }; . . // Encode the number of bytes used per diff. . bytes_per_diff.encode(s)?; . . // Encode the first element. . lines[0].encode(s)?; . . let diff_iter = lines.array_windows().map(|&[fst, snd]| snd - fst); . 38 ( 0.00%) match bytes_per_diff { . 1 => { . for diff in diff_iter { . (diff.0 as u8).encode(s)? . } . } . 2 => { . for diff in diff_iter { . (diff.0 as u16).encode(s)? -- line 1428 ---------------------------------------- -- line 1436 ---------------------------------------- . _ => unreachable!(), . } . } . . Ok(()) . })?; . s.emit_struct_field("multibyte_chars", false, |s| self.multibyte_chars.encode(s))?; . s.emit_struct_field("non_narrow_chars", false, |s| self.non_narrow_chars.encode(s))?; 54 ( 0.00%) s.emit_struct_field("name_hash", false, |s| self.name_hash.encode(s))?; . s.emit_struct_field("normalized_pos", false, |s| self.normalized_pos.encode(s))?; 198 ( 0.00%) s.emit_struct_field("cnum", false, |s| self.cnum.encode(s)) . }) . } . } . . impl Decodable for SourceFile { 5,049 ( 0.00%) fn decode(d: &mut D) -> SourceFile { . d.read_struct(|d| { . let name: FileName = d.read_struct_field("name", |d| Decodable::decode(d)); . let src_hash: SourceFileHash = . d.read_struct_field("src_hash", |d| Decodable::decode(d)); . let start_pos: BytePos = d.read_struct_field("start_pos", |d| Decodable::decode(d)); . let end_pos: BytePos = d.read_struct_field("end_pos", |d| Decodable::decode(d)); . let lines: Vec = d.read_struct_field("lines", |d| { . let num_lines: u32 = Decodable::decode(d); 561 ( 0.00%) let mut lines = Vec::with_capacity(num_lines as usize); . . if num_lines > 0 { . // Read the number of bytes used per diff. . let bytes_per_diff: u8 = Decodable::decode(d); . . // Read the first element. . let mut line_start: BytePos = Decodable::decode(d); . lines.push(line_start); . . for _ in 1..num_lines { 925,044 ( 0.02%) let diff = match bytes_per_diff { . 1 => d.read_u8() as u32, . 2 => d.read_u16() as u32, . 4 => d.read_u32(), . _ => unreachable!(), . }; . . line_start = line_start + BytePos(diff); . -- line 1480 ---------------------------------------- -- line 1483 ---------------------------------------- . } . . lines . }); . let multibyte_chars: Vec = . d.read_struct_field("multibyte_chars", |d| Decodable::decode(d)); . let non_narrow_chars: Vec = . d.read_struct_field("non_narrow_chars", |d| Decodable::decode(d)); 1,122 ( 0.00%) let name_hash: u128 = d.read_struct_field("name_hash", |d| Decodable::decode(d)); . let normalized_pos: Vec = . d.read_struct_field("normalized_pos", |d| Decodable::decode(d)); . let cnum: CrateNum = d.read_struct_field("cnum", |d| Decodable::decode(d)); 6,171 ( 0.00%) SourceFile { 4,488 ( 0.00%) name, . start_pos, . end_pos, . src: None, 2,244 ( 0.00%) src_hash, . // Unused - the metadata decoder will construct . // a new SourceFile, filling in `external_src` properly . external_src: Lock::new(ExternalSource::Unneeded), 2,244 ( 0.00%) lines, 2,244 ( 0.00%) multibyte_chars, 2,244 ( 0.00%) non_narrow_chars, 2,244 ( 0.00%) normalized_pos, . name_hash, . cnum, . } . }) 5,049 ( 0.00%) } . } . . impl fmt::Debug for SourceFile { . fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result { . write!(fmt, "SourceFile({:?})", self.name) . } . } . . impl SourceFile { 286 ( 0.00%) pub fn new( . name: FileName, . mut src: String, . start_pos: BytePos, . hash_kind: SourceFileHashAlgorithm, . ) -> Self { . // Compute the file hash before any normalization. . let src_hash = SourceFileHash::new(hash_kind, &src); 78 ( 0.00%) let normalized_pos = normalize_src(&mut src, start_pos); . . let name_hash = { . let mut hasher: StableHasher = StableHasher::new(); 52 ( 0.00%) name.hash(&mut hasher); . hasher.finish::() . }; 52 ( 0.00%) let end_pos = start_pos.to_usize() + src.len(); 78 ( 0.00%) assert!(end_pos <= u32::MAX as usize); . 312 ( 0.00%) let (lines, multibyte_chars, non_narrow_chars) = 52 ( 0.00%) analyze_source_file::analyze_source_file(&src, start_pos); . 442 ( 0.00%) SourceFile { . name, . src: Some(Lrc::new(src)), 286 ( 0.00%) src_hash, . external_src: Lock::new(ExternalSource::Unneeded), . start_pos, . end_pos: Pos::from_usize(end_pos), 104 ( 0.00%) lines, 104 ( 0.00%) multibyte_chars, 104 ( 0.00%) non_narrow_chars, 104 ( 0.00%) normalized_pos, . name_hash, . cnum: LOCAL_CRATE, . } 234 ( 0.00%) } . . /// Returns the `BytePos` of the beginning of the current line. . pub fn line_begin_pos(&self, pos: BytePos) -> BytePos { . let line_index = self.lookup_line(pos).unwrap(); . self.lines[line_index] . } . . /// Add externally loaded source. . /// If the hash of the input doesn't match or no input is supplied via None, . /// it is interpreted as an error and the corresponding enum variant is set. . /// The return value signifies whether some kind of source is present. 9,569 ( 0.00%) pub fn add_external_src(&self, get_src: F) -> bool . where . F: FnOnce() -> Option, . { 1,483 ( 0.00%) if matches!( 2,734 ( 0.00%) *self.external_src.borrow(), . ExternalSource::Foreign { kind: ExternalSourceKind::AbsentOk, .. } . ) { 1 ( 0.00%) let src = get_src(); . let mut external_src = self.external_src.borrow_mut(); . // Check that no-one else have provided the source while we were getting it 3 ( 0.00%) if let ExternalSource::Foreign { . kind: src_kind @ ExternalSourceKind::AbsentOk, .. . } = &mut *external_src . { 5 ( 0.00%) if let Some(mut src) = src { . // The src_hash needs to be computed on the pre-normalized src. 1 ( 0.00%) if self.src_hash.matches(&src) { 3 ( 0.00%) normalize_src(&mut src, BytePos::from_usize(0)); 8 ( 0.00%) *src_kind = ExternalSourceKind::Present(Lrc::new(src)); . return true; . } . } else { . *src_kind = ExternalSourceKind::AbsentErr; . } . . false . } else { . self.src.is_some() || external_src.get_source().is_some() . } . } else { 1,366 ( 0.00%) self.src.is_some() || self.external_src.borrow().get_source().is_some() . } 12,303 ( 0.00%) } . . /// Gets a line from the list of pre-computed line-beginnings. . /// The line number here is 0-based. . pub fn get_line(&self, line_number: usize) -> Option> { . fn get_until_newline(src: &str, begin: usize) -> &str { . // We can't use `lines.get(line_number+1)` because we might . // be parsing when we call this function and thus the current . // line is the last one we have line info for. -- line 1610 ---------------------------------------- -- line 1627 ---------------------------------------- . Some(Cow::Owned(String::from(get_until_newline(src, begin)))) . } else { . None . } . } . . pub fn is_real_file(&self) -> bool { . self.name.is_real() 573 ( 0.00%) } . . pub fn is_imported(&self) -> bool { . self.src.is_none() 32,285 ( 0.00%) } . . pub fn count_lines(&self) -> usize { . self.lines.len() . } . . /// Finds the line containing the given position. The return value is the . /// index into the `lines` array of this `SourceFile`, not the 1-based line . /// number. If the source_file is empty or the position is located before the . /// first line, `None` is returned. . pub fn lookup_line(&self, pos: BytePos) -> Option { 26,750 ( 0.00%) match self.lines.binary_search(&pos) { . Ok(idx) => Some(idx), . Err(0) => None, . Err(idx) => Some(idx - 1), . } . } . . pub fn line_bounds(&self, line_index: usize) -> Range { 77,897 ( 0.00%) if self.is_empty() { . return self.start_pos..self.end_pos; . } . 53,800 ( 0.00%) assert!(line_index < self.lines.len()); 75,711 ( 0.00%) if line_index == (self.lines.len() - 1) { 301 ( 0.00%) self.lines[line_index]..self.end_pos . } else { 50,252 ( 0.00%) self.lines[line_index]..self.lines[line_index + 1] . } . } . . /// Returns whether or not the file contains the given `SourceMap` byte . /// position. The position one past the end of the file is considered to be . /// contained by the file. This implies that files for which `is_empty` . /// returns true still contain one byte position according to this function. . #[inline] -- line 1674 ---------------------------------------- -- line 1692 ---------------------------------------- . Err(i) if i == 0 => 0, . Err(i) => self.normalized_pos[i - 1].diff, . }; . . BytePos::from_u32(pos.0 - self.start_pos.0 + diff) . } . . /// Converts an absolute `BytePos` to a `CharPos` relative to the `SourceFile`. 54 ( 0.00%) pub fn bytepos_to_file_charpos(&self, bpos: BytePos) -> CharPos { . // The number of extra bytes due to multibyte chars in the `SourceFile`. . let mut total_extra_bytes = 0; . 162 ( 0.00%) for mbc in self.multibyte_chars.iter() { . debug!("{}-byte char at {:?}", mbc.bytes, mbc.pos); 20 ( 0.00%) if mbc.pos < bpos { . // Every character is at least one byte, so we only . // count the actual extra bytes. 48 ( 0.00%) total_extra_bytes += mbc.bytes as u32 - 1; . // We should never see a byte position in the middle of a . // character. 40 ( 0.00%) assert!(bpos.to_u32() >= mbc.pos.to_u32() + mbc.bytes as u32); . } else { . break; . } . } . 324 ( 0.00%) assert!(self.start_pos.to_u32() + total_extra_bytes <= bpos.to_u32()); 270 ( 0.00%) CharPos(bpos.to_usize() - self.start_pos.to_usize() - total_extra_bytes as usize) 108 ( 0.00%) } . . /// Looks up the file's (1-based) line number and (0-based `CharPos`) column offset, for a . /// given `BytePos`. 189 ( 0.00%) pub fn lookup_file_pos(&self, pos: BytePos) -> (usize, CharPos) { 54 ( 0.00%) let chpos = self.bytepos_to_file_charpos(pos); 26 ( 0.00%) match self.lookup_line(pos) { . Some(a) => { . let line = a + 1; // Line numbers start at 1 27 ( 0.00%) let linebpos = self.lines[a]; 54 ( 0.00%) let linechpos = self.bytepos_to_file_charpos(linebpos); . let col = chpos - linechpos; . debug!("byte pos {:?} is on the line at byte pos {:?}", pos, linebpos); . debug!("char pos {:?} is on the line at char pos {:?}", chpos, linechpos); . debug!("byte is on line: {}", line); 27 ( 0.00%) assert!(chpos >= linechpos); . (line, col) . } . None => (0, chpos), . } 216 ( 0.00%) } . . /// Looks up the file's (1-based) line number, (0-based `CharPos`) column offset, and (0-based) . /// column offset when displayed, for a given `BytePos`. 216 ( 0.00%) pub fn lookup_file_pos_with_col_display(&self, pos: BytePos) -> (usize, CharPos, usize) { 81 ( 0.00%) let (line, col_or_chpos) = self.lookup_file_pos(pos); 54 ( 0.00%) if line > 0 { . let col = col_or_chpos; 27 ( 0.00%) let linebpos = self.lines[line - 1]; . let col_display = { . let start_width_idx = self . .non_narrow_chars . .binary_search_by_key(&linebpos, |x| x.pos()) . .unwrap_or_else(|x| x); . let end_width_idx = self . .non_narrow_chars . .binary_search_by_key(&pos, |x| x.pos()) . .unwrap_or_else(|x| x); 9 ( 0.00%) let special_chars = end_width_idx - start_width_idx; . let non_narrow: usize = self.non_narrow_chars[start_width_idx..end_width_idx] . .iter() . .map(|x| x.width()) . .sum(); 135 ( 0.00%) col.0 - special_chars + non_narrow . }; . (line, col, col_display) . } else { . let chpos = col_or_chpos; . let col_display = { . let end_width_idx = self . .non_narrow_chars . .binary_search_by_key(&pos, |x| x.pos()) . .unwrap_or_else(|x| x); . let non_narrow: usize = . self.non_narrow_chars[0..end_width_idx].iter().map(|x| x.width()).sum(); . chpos.0 - end_width_idx + non_narrow . }; . (0, chpos, col_display) . } 189 ( 0.00%) } . } . . /// Normalizes the source code and records the normalizations. 270 ( 0.00%) fn normalize_src(src: &mut String, start_pos: BytePos) -> Vec { . let mut normalized_pos = vec![]; . remove_bom(src, &mut normalized_pos); . normalize_newlines(src, &mut normalized_pos); . . // Offset all the positions by start_pos to match the final file positions. . for np in &mut normalized_pos { . np.pos.0 += start_pos.0; . } . . normalized_pos 243 ( 0.00%) } . . /// Removes UTF-8 BOM, if any. . fn remove_bom(src: &mut String, normalized_pos: &mut Vec) { 27 ( 0.00%) if src.starts_with('\u{feff}') { . src.drain(..3); . normalized_pos.push(NormalizedPos { pos: BytePos(0), diff: 3 }); . } . } . . /// Replaces `\r\n` with `\n` in-place in `src`. . /// . /// Returns error if there's a lone `\r` in the string. . fn normalize_newlines(src: &mut String, normalized_pos: &mut Vec) { 27 ( 0.00%) if !src.as_bytes().contains(&b'\r') { . return; . } . . // We replace `\r\n` with `\n` in-place, which doesn't break utf-8 encoding. . // While we *can* call `as_mut_vec` and do surgery on the live string . // directly, let's rather steal the contents of `src`. This makes the code . // safe even if a panic occurs. . -- line 1816 ---------------------------------------- -- line 1877 ---------------------------------------- . ( . $( . $(#[$attr:meta])* . $vis:vis struct $ident:ident($inner_vis:vis $inner_ty:ty); . )* . ) => { . $( . $(#[$attr])* 113,886 ( 0.00%) $vis struct $ident($inner_vis $inner_ty); . . impl Pos for $ident { . #[inline(always)] . fn from_usize(n: usize) -> $ident { 6,400 ( 0.00%) $ident(n as $inner_ty) . } . . #[inline(always)] . fn to_usize(&self) -> usize { 120,842 ( 0.00%) self.0 as usize . } . . #[inline(always)] . fn from_u32(n: u32) -> $ident { . $ident(n as $inner_ty) . } . . #[inline(always)] -- line 1903 ---------------------------------------- -- line 1906 ---------------------------------------- . } . } . . impl Add for $ident { . type Output = $ident; . . #[inline(always)] . fn add(self, rhs: $ident) -> $ident { 1,861,179 ( 0.03%) $ident(self.0 + rhs.0) . } . } . . impl Sub for $ident { . type Output = $ident; . . #[inline(always)] . fn sub(self, rhs: $ident) -> $ident { 2,644,868 ( 0.05%) $ident(self.0 - rhs.0) . } . } . )* . }; . } . . impl_pos! { . /// A byte offset. -- line 1931 ---------------------------------------- -- line 1939 ---------------------------------------- . /// Because of multibyte UTF-8 characters, a byte offset . /// is not equivalent to a character offset. The [`SourceMap`] will convert [`BytePos`] . /// values to `CharPos` values as necessary. . #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug)] . pub struct CharPos(pub usize); . } . . impl Encodable for BytePos { 20 ( 0.00%) fn encode(&self, s: &mut S) -> Result<(), S::Error> { . s.emit_u32(self.0) 24 ( 0.00%) } . } . . impl Decodable for BytePos { . fn decode(d: &mut D) -> BytePos { 169,354 ( 0.00%) BytePos(d.read_u32()) . } . } . . // _____________________________________________________________________________ . // Loc, SourceFileAndLine, SourceFileAndBytePos . // . . /// A source code location used for error reporting. -- line 1962 ---------------------------------------- -- line 2042 ---------------------------------------- . /// Range inside of a `Span` used for diagnostics when we only have access to relative positions. . #[derive(Copy, Clone, PartialEq, Eq, Debug)] . pub struct InnerSpan { . pub start: usize, . pub end: usize, . } . . impl InnerSpan { 52 ( 0.00%) pub fn new(start: usize, end: usize) -> InnerSpan { . InnerSpan { start, end } 26 ( 0.00%) } . } . . /// Requirements for a `StableHashingContext` to be used in this crate. . /// . /// This is a hack to allow using the [`HashStable_Generic`] derive macro . /// instead of implementing everything in rustc_middle. . pub trait HashStableContext { . fn def_path_hash(&self, def_id: DefId) -> DefPathHash; -- line 2060 ---------------------------------------- -- line 2079 ---------------------------------------- . /// offsets into the `SourceMap`). Instead, we hash the (file name, line, column) . /// triple, which stays the same even if the containing `SourceFile` has moved . /// within the `SourceMap`. . /// . /// Also note that we are hashing byte offsets for the column, not unicode . /// codepoint offsets. For the purpose of the hash that's sufficient. . /// Also, hashing filenames is expensive so we avoid doing it twice when the . /// span starts and ends in the same file, which is almost always the case. 1,437,716 ( 0.02%) fn hash_stable(&self, ctx: &mut CTX, hasher: &mut StableHasher) { . const TAG_VALID_SPAN: u8 = 0; . const TAG_INVALID_SPAN: u8 = 1; . const TAG_RELATIVE_SPAN: u8 = 2; . 285,279 ( 0.00%) if !ctx.hash_spans() { . return; . } . 1,152,437 ( 0.02%) let span = self.data_untracked(); 376,503 ( 0.01%) span.ctxt.hash_stable(ctx, hasher); 616,164 ( 0.01%) span.parent.hash_stable(ctx, hasher); . 414,719 ( 0.01%) if span.is_dummy() { . Hash::hash(&TAG_INVALID_SPAN, hasher); . return; . } . 402,890 ( 0.01%) if let Some(parent) = span.parent { . let def_span = ctx.def_span(parent).data_untracked(); . if def_span.contains(span) { . // This span is enclosed in a definition: only hash the relative position. . Hash::hash(&TAG_RELATIVE_SPAN, hasher); . (span.lo - def_span.lo).to_u32().hash_stable(ctx, hasher); . (span.hi - def_span.lo).to_u32().hash_stable(ctx, hasher); . return; . } . } . . // If this is not an empty or invalid span, we want to hash the last . // position that belongs to it, as opposed to hashing the first . // position past it. 805,780 ( 0.01%) let (file, line_lo, col_lo, line_hi, col_hi) = match ctx.span_data_to_lines_and_cols(&span) . { 402,890 ( 0.01%) Some(pos) => pos, . None => { . Hash::hash(&TAG_INVALID_SPAN, hasher); . return; . } . }; . . Hash::hash(&TAG_VALID_SPAN, hasher); . // We truncate the stable ID hash and line and column numbers. The chances -- line 2129 ---------------------------------------- -- line 2134 ---------------------------------------- . // hash only the length, for example, then two otherwise equal spans with . // different end locations will have the same hash. This can cause a problem . // during incremental compilation wherein a previous result for a query that . // depends on the end location of a span will be incorrectly reused when the . // end location of the span it depends on has changed (see issue #74890). A . // similar analysis applies if some query depends specifically on the length . // of the span, but we only hash the end location. So hash both. . 201,445 ( 0.00%) let col_lo_trunc = (col_lo.0 as u64) & 0xFF; . let line_lo_trunc = ((line_lo as u64) & 0xFF_FF_FF) << 8; . let col_hi_trunc = (col_hi.0 as u64) & 0xFF << 32; . let line_hi_trunc = ((line_hi as u64) & 0xFF_FF_FF) << 40; . let col_line = col_lo_trunc | line_lo_trunc | col_hi_trunc | line_hi_trunc; 201,445 ( 0.00%) let len = (span.hi - span.lo).0; . Hash::hash(&col_line, hasher); . Hash::hash(&len, hasher); 1,643,104 ( 0.03%) } . } 4,060,320 ( 0.07%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/result.rs -------------------------------------------------------------------------------- Ir -- line 491 ---------------------------------------- . . use crate::iter::{self, FromIterator, FusedIterator, TrustedLen}; . use crate::ops::{self, ControlFlow, Deref, DerefMut}; . use crate::{convert, fmt, hint}; . . /// `Result` is a type that represents either success ([`Ok`]) or failure ([`Err`]). . /// . /// See the [module documentation](self) for details. 666 ( 0.00%) #[derive(Copy, PartialEq, PartialOrd, Eq, Ord, Debug, Hash)] . #[must_use = "this `Result` may be an `Err` variant, which should be handled"] . #[rustc_diagnostic_item = "Result"] . #[stable(feature = "rust1", since = "1.0.0")] . pub enum Result { . /// Contains the success value . #[lang = "Ok"] . #[stable(feature = "rust1", since = "1.0.0")] 66 ( 0.00%) Ok(#[stable(feature = "rust1", since = "1.0.0")] T), . . /// Contains the error value . #[lang = "Err"] . #[stable(feature = "rust1", since = "1.0.0")] . Err(#[stable(feature = "rust1", since = "1.0.0")] E), . } . . ///////////////////////////////////////////////////////////////////////////// -- line 515 ---------------------------------------- -- line 533 ---------------------------------------- . /// . /// let x: Result = Err("Some error message"); . /// assert_eq!(x.is_ok(), false); . /// ``` . #[must_use = "if you intended to assert that this is ok, consider `.unwrap()` instead"] . #[rustc_const_stable(feature = "const_result", since = "1.48.0")] . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] 600 ( 0.00%) pub const fn is_ok(&self) -> bool { 18,171 ( 0.00%) matches!(*self, Ok(_)) 1,500 ( 0.00%) } . . /// Returns `true` if the result is [`Ok`] wrapping a value matching the predicate. . /// . /// # Examples . /// . /// ``` . /// #![feature(is_some_with)] . /// -- line 551 ---------------------------------------- -- line 577 ---------------------------------------- . /// . /// let x: Result = Err("Some error message"); . /// assert_eq!(x.is_err(), true); . /// ``` . #[must_use = "if you intended to assert that this is err, consider `.unwrap_err()` instead"] . #[rustc_const_stable(feature = "const_result", since = "1.48.0")] . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] 6 ( 0.00%) pub const fn is_err(&self) -> bool { 9 ( 0.00%) !self.is_ok() 12 ( 0.00%) } . . /// Returns `true` if the result is [`Err`] wrapping a value matching the predicate. . /// . /// # Examples . /// . /// ``` . /// #![feature(is_some_with)] . /// use std::io::{Error, ErrorKind}; -- line 595 ---------------------------------------- -- line 627 ---------------------------------------- . /// let x: Result = Ok(2); . /// assert_eq!(x.ok(), Some(2)); . /// . /// let x: Result = Err("Nothing here"); . /// assert_eq!(x.ok(), None); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] 44 ( 0.00%) pub fn ok(self) -> Option { 83,891 ( 0.00%) match self { 19,218 ( 0.00%) Ok(x) => Some(x), . Err(_) => None, . } 88 ( 0.00%) } . . /// Converts from `Result` to [`Option`]. . /// . /// Converts `self` into an [`Option`], consuming `self`, . /// and discarding the success value, if any. . /// . /// # Examples . /// -- line 648 ---------------------------------------- -- line 657 ---------------------------------------- . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn err(self) -> Option { . match self { . Ok(_) => None, . Err(x) => Some(x), . } 4 ( 0.00%) } . . ///////////////////////////////////////////////////////////////////////// . // Adapter for working with references . ///////////////////////////////////////////////////////////////////////// . . /// Converts from `&Result` to `Result<&T, &E>`. . /// . /// Produces a new `Result`, containing a reference -- line 673 ---------------------------------------- -- line 683 ---------------------------------------- . /// . /// let x: Result = Err("Error"); . /// assert_eq!(x.as_ref(), Err(&"Error")); . /// ``` . #[inline] . #[rustc_const_stable(feature = "const_result", since = "1.48.0")] . #[stable(feature = "rust1", since = "1.0.0")] . pub const fn as_ref(&self) -> Result<&T, &E> { 62 ( 0.00%) match *self { . Ok(ref x) => Ok(x), . Err(ref x) => Err(x), . } . } . . /// Converts from `&mut Result` to `Result<&mut T, &mut E>`. . /// . /// # Examples -- line 699 ---------------------------------------- -- line 715 ---------------------------------------- . /// let mut x: Result = Err(13); . /// mutate(&mut x); . /// assert_eq!(x.unwrap_err(), 0); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_result", issue = "82814")] . pub const fn as_mut(&mut self) -> Result<&mut T, &mut E> { 235 ( 0.00%) match *self { . Ok(ref mut x) => Ok(x), . Err(ref mut x) => Err(x), . } . } . . ///////////////////////////////////////////////////////////////////////// . // Transforming contained values . ///////////////////////////////////////////////////////////////////////// -- line 731 ---------------------------------------- -- line 746 ---------------------------------------- . /// match num.parse::().map(|i| i * 2) { . /// Ok(n) => println!("{}", n), . /// Err(..) => {} . /// } . /// } . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] 589 ( 0.00%) pub fn map U>(self, op: F) -> Result { 2,624,130 ( 0.05%) match self { 1,404,533 ( 0.02%) Ok(t) => Ok(op(t)), 1,670,385 ( 0.03%) Err(e) => Err(e), . } 759 ( 0.00%) } . . /// Returns the provided default (if [`Err`]), or . /// applies a function to the contained value (if [`Ok`]), . /// . /// Arguments passed to `map_or` are eagerly evaluated; if you are passing . /// the result of a function call, it is recommended to use [`map_or_else`], . /// which is lazily evaluated. . /// -- line 767 ---------------------------------------- -- line 774 ---------------------------------------- . /// assert_eq!(x.map_or(42, |v| v.len()), 3); . /// . /// let x: Result<&str, _> = Err("bar"); . /// assert_eq!(x.map_or(42, |v| v.len()), 42); . /// ``` . #[inline] . #[stable(feature = "result_map_or", since = "1.41.0")] . pub fn map_or U>(self, default: U, f: F) -> U { 1,319 ( 0.00%) match self { 593 ( 0.00%) Ok(t) => f(t), . Err(_) => default, . } . } . . /// Maps a `Result` to `U` by applying fallback function `default` to . /// a contained [`Err`] value, or function `f` to a contained [`Ok`] value. . /// . /// This function can be used to unpack a successful result -- line 791 ---------------------------------------- -- line 831 ---------------------------------------- . /// let x: Result = Ok(2); . /// assert_eq!(x.map_err(stringify), Ok(2)); . /// . /// let x: Result = Err(13); . /// assert_eq!(x.map_err(stringify), Err("error code: 13".to_string())); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] 41,954 ( 0.00%) pub fn map_err F>(self, op: O) -> Result { 1,595,310 ( 0.03%) match self { 2,243,280 ( 0.04%) Ok(t) => Ok(t), 524,482 ( 0.01%) Err(e) => Err(op(e)), . } 44,541 ( 0.00%) } . . /// Calls the provided closure with a reference to the contained value (if [`Ok`]). . /// . /// # Examples . /// . /// ``` . /// #![feature(result_option_inspect)] . /// -- line 852 ---------------------------------------- -- line 1008 ---------------------------------------- . /// . /// ```should_panic . /// let x: Result = Err("emergency failure"); . /// x.expect("Testing expect"); // panics with `Testing expect: emergency failure` . /// ``` . #[inline] . #[track_caller] . #[stable(feature = "result_expect", since = "1.4.0")] 14,000 ( 0.00%) pub fn expect(self, msg: &str) -> T . where . E: fmt::Debug, . { 84,121 ( 0.00%) match self { 11,136 ( 0.00%) Ok(t) => t, . Err(e) => unwrap_failed(msg, &e), . } 3,274 ( 0.00%) } . . /// Returns the contained [`Ok`] value, consuming the `self` value. . /// . /// Because this function may panic, its use is generally discouraged. . /// Instead, prefer to use pattern matching and handle the [`Err`] . /// case explicitly, or call [`unwrap_or`], [`unwrap_or_else`], or . /// [`unwrap_or_default`]. . /// -- line 1032 ---------------------------------------- -- line 1051 ---------------------------------------- . /// . /// ```should_panic . /// let x: Result = Err("emergency failure"); . /// x.unwrap(); // panics with `emergency failure` . /// ``` . #[inline] . #[track_caller] . #[stable(feature = "rust1", since = "1.0.0")] 4 ( 0.00%) pub fn unwrap(self) -> T . where . E: fmt::Debug, . { 94,095 ( 0.00%) match self { 10,201 ( 0.00%) Ok(t) => t, . Err(e) => unwrap_failed("called `Result::unwrap()` on an `Err` value", &e), . } 6 ( 0.00%) } . . /// Returns the contained [`Ok`] value or a default . /// . /// Consumes the `self` argument then, if [`Ok`], returns the contained . /// value, otherwise if [`Err`], returns the default value for that . /// type. . /// . /// # Examples -- line 1075 ---------------------------------------- -- line 1092 ---------------------------------------- . /// [`parse`]: str::parse . /// [`FromStr`]: crate::str::FromStr . #[inline] . #[stable(feature = "result_unwrap_or_default", since = "1.16.0")] . pub fn unwrap_or_default(self) -> T . where . T: Default, . { 9,916 ( 0.00%) match self { 6,487 ( 0.00%) Ok(x) => x, . Err(_) => Default::default(), . } . } . . /// Returns the contained [`Err`] value, consuming the `self` value. . /// . /// # Panics . /// -- line 1109 ---------------------------------------- -- line 1152 ---------------------------------------- . /// ``` . #[inline] . #[track_caller] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn unwrap_err(self) -> E . where . T: fmt::Debug, . { 2,550 ( 0.00%) match self { . Ok(t) => unwrap_failed("called `Result::unwrap_err()` on an `Ok` value", &t), . Err(e) => e, . } . } . . /// Returns the contained [`Ok`] value, but never panics. . /// . /// Unlike [`unwrap`], this method is known to never panic on the -- line 1168 ---------------------------------------- -- line 1190 ---------------------------------------- . /// ``` . #[unstable(feature = "unwrap_infallible", reason = "newly added", issue = "61695")] . #[inline] . pub fn into_ok(self) -> T . where . E: Into, . { . match self { 12,250,510 ( 0.21%) Ok(x) => x, . Err(e) => e.into(), . } . } . . /// Returns the contained [`Err`] value, but never panics. . /// . /// Unlike [`unwrap_err`], this method is known to never panic on the . /// result types it is implemented for. Therefore, it can be used -- line 1206 ---------------------------------------- -- line 1290 ---------------------------------------- . /// assert_eq!(Ok(2).and_then(sq).and_then(sq), Ok(16)); . /// assert_eq!(Ok(2).and_then(sq).and_then(err), Err(4)); . /// assert_eq!(Ok(2).and_then(err).and_then(sq), Err(2)); . /// assert_eq!(Err(3).and_then(sq).and_then(sq), Err(3)); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn and_then Result>(self, op: F) -> Result { 20,093 ( 0.00%) match self { 34,338 ( 0.00%) Ok(t) => op(t), 7,803 ( 0.00%) Err(e) => Err(e), . } . } . . /// Returns `res` if the result is [`Err`], otherwise returns the [`Ok`] value of `self`. . /// . /// Arguments passed to `or` are eagerly evaluated; if you are passing the . /// result of a function call, it is recommended to use [`or_else`], which is . /// lazily evaluated. -- line 1308 ---------------------------------------- -- line 1355 ---------------------------------------- . /// assert_eq!(Ok(2).or_else(sq).or_else(sq), Ok(2)); . /// assert_eq!(Ok(2).or_else(err).or_else(sq), Ok(2)); . /// assert_eq!(Err(3).or_else(sq).or_else(err), Ok(9)); . /// assert_eq!(Err(3).or_else(err).or_else(err), Err(3)); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn or_else Result>(self, op: O) -> Result { 3,670 ( 0.00%) match self { 12,806 ( 0.00%) Ok(t) => Ok(t), . Err(e) => op(e), . } . } . . /// Returns the contained [`Ok`] value or a provided default. . /// . /// Arguments passed to `unwrap_or` are eagerly evaluated; if you are passing . /// the result of a function call, it is recommended to use [`unwrap_or_else`], -- line 1372 ---------------------------------------- -- line 1384 ---------------------------------------- . /// assert_eq!(x.unwrap_or(default), 9); . /// . /// let x: Result = Err("error"); . /// assert_eq!(x.unwrap_or(default), default); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] . pub fn unwrap_or(self, default: T) -> T { 5,795 ( 0.00%) match self { 150 ( 0.00%) Ok(t) => t, . Err(_) => default, . } . } . . /// Returns the contained [`Ok`] value or computes it from a closure. . /// . /// . /// # Examples -- line 1401 ---------------------------------------- -- line 1405 ---------------------------------------- . /// ``` . /// fn count(x: &str) -> usize { x.len() } . /// . /// assert_eq!(Ok(2).unwrap_or_else(count), 2); . /// assert_eq!(Err("foo").unwrap_or_else(count), 3); . /// ``` . #[inline] . #[stable(feature = "rust1", since = "1.0.0")] 82 ( 0.00%) pub fn unwrap_or_else T>(self, op: F) -> T { 212,564 ( 0.00%) match self { 105,443 ( 0.00%) Ok(t) => t, . Err(e) => op(e), . } 139 ( 0.00%) } . . /// Returns the contained [`Ok`] value, consuming the `self` value, . /// without checking that the value is not an [`Err`]. . /// . /// # Safety . /// . /// Calling this method on an [`Err`] is *[undefined behavior]*. . /// -- line 1426 ---------------------------------------- -- line 1647 ---------------------------------------- . /// let x: Result, SomeErr> = Ok(Some(5)); . /// let y: Option> = Some(Ok(5)); . /// assert_eq!(x.transpose(), y); . /// ``` . #[inline] . #[stable(feature = "transpose_result", since = "1.33.0")] . #[rustc_const_unstable(feature = "const_result", issue = "82814")] . pub const fn transpose(self) -> Option> { 1,424 ( 0.00%) match self { . Ok(Some(x)) => Some(Ok(x)), . Ok(None) => None, . Err(e) => Some(Err(e)), . } . } . } . . impl Result, E> { -- line 1663 ---------------------------------------- -- line 1751 ---------------------------------------- . . ///////////////////////////////////////////////////////////////////////////// . // Trait implementations . ///////////////////////////////////////////////////////////////////////////// . . #[stable(feature = "rust1", since = "1.0.0")] . impl Clone for Result { . #[inline] 171,951 ( 0.00%) fn clone(&self) -> Self { 835,068 ( 0.01%) match self { 911,487 ( 0.02%) Ok(x) => Ok(x.clone()), 126,218 ( 0.00%) Err(x) => Err(x.clone()), . } 345,522 ( 0.01%) } . . #[inline] . fn clone_from(&mut self, source: &Self) { . match (self, source) { . (Ok(to), Ok(from)) => to.clone_from(from), . (Err(to), Err(from)) => to.clone_from(from), . (to, from) => *to = from.clone(), . } -- line 1772 ---------------------------------------- -- line 1791 ---------------------------------------- . /// let v: Vec = x.into_iter().collect(); . /// assert_eq!(v, [5]); . /// . /// let x: Result = Err("nothing!"); . /// let v: Vec = x.into_iter().collect(); . /// assert_eq!(v, []); . /// ``` . #[inline] 33 ( 0.00%) fn into_iter(self) -> IntoIter { 165 ( 0.00%) IntoIter { inner: self.ok() } 22 ( 0.00%) } . } . . #[stable(since = "1.4.0", feature = "result_iter")] . impl<'a, T, E> IntoIterator for &'a Result { . type Item = &'a T; . type IntoIter = Iter<'a, T>; . . fn into_iter(self) -> Iter<'a, T> { -- line 1809 ---------------------------------------- -- line 1931 ---------------------------------------- . inner: Option, . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl Iterator for IntoIter { . type Item = T; . . #[inline] 88 ( 0.00%) fn next(&mut self) -> Option { 22 ( 0.00%) self.inner.take() 44 ( 0.00%) } . #[inline] . fn size_hint(&self) -> (usize, Option) { . let n = if self.inner.is_some() { 1 } else { 0 }; . (n, Some(n)) . } . } . . #[stable(feature = "rust1", since = "1.0.0")] -- line 1949 ---------------------------------------- -- line 2011 ---------------------------------------- . /// . /// Since the third element caused an underflow, no further elements were taken, . /// so the final value of `shared` is 6 (= `3 + 2 + 1`), not 16. . #[inline] . fn from_iter>>(iter: I) -> Result { . // FIXME(#11084): This could be replaced with Iterator::scan when this . // performance bug is closed. . 1,939,518 ( 0.03%) iter::process_results(iter.into_iter(), |i| i.collect()) . } . } . . #[unstable(feature = "try_trait_v2", issue = "84277")] . #[rustc_const_unstable(feature = "const_convert", issue = "88674")] . impl const ops::Try for Result { . type Output = T; . type Residual = Result; . . #[inline] . fn from_output(output: Self::Output) -> Self { 6,576 ( 0.00%) Ok(output) . } . . #[inline] 77,096 ( 0.00%) fn branch(self) -> ControlFlow { 8,213,269 ( 0.14%) match self { 4,475,169 ( 0.08%) Ok(v) => ControlFlow::Continue(v), 2,950,497 ( 0.05%) Err(e) => ControlFlow::Break(Err(e)), . } 58,786 ( 0.00%) } . } . . #[unstable(feature = "try_trait_v2", issue = "84277")] . #[rustc_const_unstable(feature = "const_convert", issue = "88674")] . impl> const ops::FromResidual> . for Result . { . #[inline] . #[track_caller] 774 ( 0.00%) fn from_residual(residual: Result) -> Self { . match residual { 1,388,246 ( 0.02%) Err(e) => Err(From::from(e)), . } 516 ( 0.00%) } . } . . #[unstable(feature = "try_trait_v2_residual", issue = "91285")] . impl ops::Residual for Result { . type TryType = Result; . } 4,156,594 ( 0.07%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/bitmask.rs -------------------------------------------------------------------------------- Ir -- line 16 ---------------------------------------- . #[derive(Copy, Clone)] . pub struct BitMask(pub BitMaskWord); . . #[allow(clippy::use_self)] . impl BitMask { . /// Returns a new `BitMask` with all bits inverted. . #[inline] . #[must_use] 9 ( 0.00%) pub fn invert(self) -> Self { 202,218 ( 0.00%) BitMask(self.0 ^ BITMASK_MASK) 9 ( 0.00%) } . . /// Flip the bit in the mask for the entry at the given index. . /// . /// Returns the bit's previous state. . #[inline] . #[allow(clippy::cast_ptr_alignment)] . #[cfg(feature = "raw")] . pub unsafe fn flip(&mut self, index: usize) -> bool { -- line 34 ---------------------------------------- -- line 37 ---------------------------------------- . self.0 ^= mask; . // The bit was set if the bit is now 0. . self.0 & mask == 0 . } . . /// Returns a new `BitMask` with the lowest bit removed. . #[inline] . #[must_use] 20 ( 0.00%) pub fn remove_lowest_bit(self) -> Self { 209,210 ( 0.00%) BitMask(self.0 & (self.0 - 1)) 15 ( 0.00%) } . /// Returns whether the `BitMask` has at least one set bit. . #[inline] 12 ( 0.00%) pub fn any_bit_set(self) -> bool { 2,928,070 ( 0.05%) self.0 != 0 16 ( 0.00%) } . . /// Returns the first set bit in the `BitMask`, if there is one. . #[inline] 72 ( 0.00%) pub fn lowest_set_bit(self) -> Option { 40,928,778 ( 0.71%) if self.0 == 0 { 7 ( 0.00%) None . } else { 55 ( 0.00%) Some(unsafe { self.lowest_set_bit_nonzero() }) . } 72 ( 0.00%) } . . /// Returns the first set bit in the `BitMask`, if there is one. The . /// bitmask must not be empty. . #[inline] . #[cfg(feature = "nightly")] 33 ( 0.00%) pub unsafe fn lowest_set_bit_nonzero(self) -> usize { 57,203 ( 0.00%) intrinsics::cttz_nonzero(self.0) as usize / BITMASK_STRIDE 22 ( 0.00%) } . #[inline] . #[cfg(not(feature = "nightly"))] . pub unsafe fn lowest_set_bit_nonzero(self) -> usize { . self.trailing_zeros() . } . . /// Returns the number of trailing zeroes in the `BitMask`. . #[inline] -- line 78 ---------------------------------------- -- line 96 ---------------------------------------- . } . } . . impl IntoIterator for BitMask { . type Item = usize; . type IntoIter = BitMaskIter; . . #[inline] 18 ( 0.00%) fn into_iter(self) -> BitMaskIter { 6 ( 0.00%) BitMaskIter(self) 18 ( 0.00%) } . } . . /// Iterator over the contents of a `BitMask`, returning the indices of set . /// bits. . pub struct BitMaskIter(BitMask); . . impl Iterator for BitMaskIter { . type Item = usize; . . #[inline] 18 ( 0.00%) fn next(&mut self) -> Option { 12,045,084 ( 0.21%) let bit = self.0.lowest_set_bit()?; 10 ( 0.00%) self.0 = self.0.remove_lowest_bit(); 4 ( 0.00%) Some(bit) 30 ( 0.00%) } . } 606,717 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/undo_log.rs -------------------------------------------------------------------------------- Ir -- line 28 ---------------------------------------- . PushRegionObligation, . } . . macro_rules! impl_from { . ($($ctor: ident ($ty: ty),)*) => { . $( . impl<'tcx> From<$ty> for UndoLog<'tcx> { . fn from(x: $ty) -> Self { 9,637 ( 0.00%) UndoLog::$ctor(x.into()) . } . } . )* . } . } . . // Upcast from a single kind of "undoable action" to the general enum . impl_from! { -- line 44 ---------------------------------------- -- line 57 ---------------------------------------- . ConstUnificationTable(sv::UndoLog>>), . . RegionUnificationTable(sv::UndoLog>>), . ProjectionCache(traits::UndoLog<'tcx>), . } . . /// The Rollback trait defines how to rollback a particular action. . impl<'tcx> Rollback> for InferCtxtInner<'tcx> { 744,267 ( 0.01%) fn reverse(&mut self, undo: UndoLog<'tcx>) { 1,240,445 ( 0.02%) match undo { 1,601,800 ( 0.03%) UndoLog::TypeVariables(undo) => self.type_variable_storage.reverse(undo), 754 ( 0.00%) UndoLog::ConstUnificationTable(undo) => self.const_unification_storage.reverse(undo), 108 ( 0.00%) UndoLog::IntUnificationTable(undo) => self.int_unification_storage.reverse(undo), 4 ( 0.00%) UndoLog::FloatUnificationTable(undo) => self.float_unification_storage.reverse(undo), . UndoLog::RegionConstraintCollector(undo) => { 316,379 ( 0.01%) self.region_constraint_storage.as_mut().unwrap().reverse(undo) . } . UndoLog::RegionUnificationTable(undo) => { 79,748 ( 0.00%) self.region_constraint_storage.as_mut().unwrap().unification_table.reverse(undo) . } . UndoLog::ProjectionCache(undo) => self.projection_cache.reverse(undo), . UndoLog::PushRegionObligation => { . self.region_obligations.pop(); . } . } 992,356 ( 0.02%) } . } . . /// The combined undo log for all the various unification tables. For each change to the storage . /// for any kind of inference variable, we record an UndoLog entry in the vector here. . pub(crate) struct InferCtxtUndoLogs<'tcx> { . logs: Vec>, . num_open_snapshots: usize, . } . . impl Default for InferCtxtUndoLogs<'_> { . fn default() -> Self { 78,100 ( 0.00%) Self { logs: Default::default(), num_open_snapshots: Default::default() } . } . } . . /// The UndoLogs trait defines how we undo a particular kind of action (of type T). We can undo any . /// action that is convertable into an UndoLog (per the From impls above). . impl<'tcx, T> UndoLogs for InferCtxtUndoLogs<'tcx> . where . UndoLog<'tcx>: From, -- line 102 ---------------------------------------- -- line 103 ---------------------------------------- . { . #[inline] . fn num_open_snapshots(&self) -> usize { . self.num_open_snapshots . } . . #[inline] . fn push(&mut self, undo: T) { 248,305 ( 0.00%) if self.in_snapshot() { 77,096 ( 0.00%) self.logs.push(undo.into()) . } . } . . fn clear(&mut self) { . self.logs.clear(); . self.num_open_snapshots = 0; . } . -- line 120 ---------------------------------------- -- line 125 ---------------------------------------- . { . if self.in_snapshot() { . self.logs.extend(undos.into_iter().map(UndoLog::from)) . } . } . } . . impl<'tcx> InferCtxtInner<'tcx> { 5,296,440 ( 0.09%) pub fn rollback_to(&mut self, snapshot: Snapshot<'tcx>) { . debug!("rollback_to({})", snapshot.undo_len); . self.undo_log.assert_open_snapshot(&snapshot); . 2,509,747 ( 0.04%) while self.undo_log.logs.len() > snapshot.undo_len { . let undo = self.undo_log.logs.pop().unwrap(); 2,977,068 ( 0.05%) self.reverse(undo); . } . 1,798,370 ( 0.03%) if self.undo_log.num_open_snapshots == 1 { . // The root snapshot. It's safe to clear the undo log because . // there's no snapshot further out that we might need to roll back . // to. 552,850 ( 0.01%) assert!(snapshot.undo_len == 0); . self.undo_log.logs.clear(); . } . 2,924,645 ( 0.05%) self.undo_log.num_open_snapshots -= 1; 6,179,180 ( 0.11%) } . . pub fn commit(&mut self, snapshot: Snapshot<'tcx>) { . debug!("commit({})", snapshot.undo_len); . 862,536 ( 0.01%) if self.undo_log.num_open_snapshots == 1 { . // The root snapshot. It's safe to clear the undo log because . // there's no snapshot further out that we might need to roll back . // to. 187,324 ( 0.00%) assert!(snapshot.undo_len == 0); . self.undo_log.logs.clear(); . } . 956,198 ( 0.02%) self.undo_log.num_open_snapshots -= 1; . } . } . . impl<'tcx> InferCtxtUndoLogs<'tcx> { . pub fn start_snapshot(&mut self) -> Snapshot<'tcx> { 4,681,008 ( 0.08%) self.num_open_snapshots += 1; . Snapshot { undo_len: self.logs.len(), _marker: PhantomData } . } . . pub(crate) fn region_constraints_in_snapshot( . &self, . s: &Snapshot<'tcx>, . ) -> impl Iterator> + Clone { 351,579 ( 0.01%) self.logs[s.undo_len..].iter().filter_map(|log| match log { . UndoLog::RegionConstraintCollector(log) => Some(log), . _ => None, . }) . } . . pub(crate) fn region_constraints( . &self, . ) -> impl Iterator> + Clone { 40 ( 0.00%) self.logs.iter().filter_map(|log| match log { . UndoLog::RegionConstraintCollector(log) => Some(log), . _ => None, . }) . } . . fn assert_open_snapshot(&self, snapshot: &Snapshot<'tcx>) { . // Failures here may indicate a failure to follow a stack discipline. 2,648,220 ( 0.05%) assert!(self.logs.len() >= snapshot.undo_len); 2,648,220 ( 0.05%) assert!(self.num_open_snapshots > 0); . } . } . . impl<'tcx> std::ops::Index for InferCtxtUndoLogs<'tcx> { . type Output = UndoLog<'tcx>; . . fn index(&self, key: usize) -> &Self::Output { . &self.logs[key] -- line 204 ---------------------------------------- 1,977,822 ( 0.03%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/mod.rs -------------------------------------------------------------------------------- Ir -- line 157 ---------------------------------------- . pub fn opt_fn_def_id(self) -> Option { . if let Res::Def(DefKind::Fn, def_id) = self.res { Some(def_id) } else { None } . } . } . . /// The "header" of an impl is everything outside the body: a Self type, a trait . /// ref (in the case of a trait impl), and a set of predicates (from the . /// bounds / where-clauses). 4,947 ( 0.00%) #[derive(Clone, Debug, TypeFoldable)] . pub struct ImplHeader<'tcx> { . pub impl_def_id: DefId, . pub self_ty: Ty<'tcx>, . pub trait_ref: Option>, . pub predicates: Vec>, . } . . #[derive( . Copy, . Clone, 680,725 ( 0.01%) PartialEq, . Eq, . Hash, . TyEncodable, 18,068 ( 0.00%) TyDecodable, . HashStable, . Debug, . TypeFoldable . )] . pub enum ImplPolarity { . /// `impl Trait for Type` . Positive, . /// `impl !Trait for Type` -- line 188 ---------------------------------------- -- line 210 ---------------------------------------- . match self { . Self::Positive => f.write_str("positive"), . Self::Negative => f.write_str("negative"), . Self::Reservation => f.write_str("reservation"), . } . } . } . 241,022 ( 0.00%) #[derive(Clone, Debug, PartialEq, Eq, Copy, Hash, TyEncodable, TyDecodable, HashStable)] . pub enum Visibility { . /// Visible everywhere (including in other crates). . Public, . /// Visible only in the given crate-local module. . Restricted(DefId), . /// Not visible anywhere in the local crate. This is the visibility of private external items. . Invisible, . } . 2,275,338 ( 0.04%) #[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, HashStable, TyEncodable, TyDecodable)] . pub enum BoundConstness { . /// `T: Trait` . NotConst, . /// `T: ~const Trait` . /// . /// Requires resolving to const only when we are in a const context. . ConstIfConst, . } . . impl BoundConstness { . /// Reduce `self` and `constness` to two possible combined states instead of four. 46,792 ( 0.00%) pub fn and(&mut self, constness: hir::Constness) -> hir::Constness { 70,188 ( 0.00%) match (constness, self) { . (hir::Constness::Const, BoundConstness::ConstIfConst) => hir::Constness::Const, . (_, this) => { 165,850 ( 0.00%) *this = BoundConstness::NotConst; . hir::Constness::NotConst . } . } 23,396 ( 0.00%) } . } . . impl fmt::Display for BoundConstness { . fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { . match self { . Self::NotConst => f.write_str("normal"), . Self::ConstIfConst => f.write_str("`~const`"), . } -- line 256 ---------------------------------------- -- line 274 ---------------------------------------- . pub before_feature_tys: Ty<'tcx>, . /// Tuple containing the types of closure captures after the feature `capture_disjoint_fields` . pub after_feature_tys: Ty<'tcx>, . } . . pub trait DefIdTree: Copy { . fn parent(self, id: DefId) -> Option; . 161 ( 0.00%) fn is_descendant_of(self, mut descendant: DefId, ancestor: DefId) -> bool { 29 ( 0.00%) if descendant.krate != ancestor.krate { . return false; . } . 42,249 ( 0.00%) while descendant != ancestor { 81,250 ( 0.00%) match self.parent(descendant) { . Some(parent) => descendant = parent, . None => return false, . } . } . true 184 ( 0.00%) } . } . . impl<'tcx> DefIdTree for TyCtxt<'tcx> { 42,488 ( 0.00%) fn parent(self, id: DefId) -> Option { . self.def_key(id).parent.map(|index| DefId { index, ..id }) 63,732 ( 0.00%) } . } . . impl Visibility { 314 ( 0.00%) pub fn from_hir(visibility: &hir::Visibility<'_>, id: hir::HirId, tcx: TyCtxt<'_>) -> Self { 942 ( 0.00%) match visibility.node { . hir::VisibilityKind::Public => Visibility::Public, . hir::VisibilityKind::Crate(_) => Visibility::Restricted(DefId::local(CRATE_DEF_INDEX)), . hir::VisibilityKind::Restricted { ref path, .. } => match path.res { . // If there is no resolution, `resolve` will have already reported an error, so . // assume that the visibility is public to avoid reporting more privacy errors. . Res::Err => Visibility::Public, . def => Visibility::Restricted(def.def_id()), . }, . hir::VisibilityKind::Inherited => { 596 ( 0.00%) Visibility::Restricted(tcx.parent_module(id).to_def_id()) . } . } 314 ( 0.00%) } . . /// Returns `true` if an item with this visibility is accessible from the given block. 119,088 ( 0.00%) pub fn is_accessible_from(self, module: DefId, tree: T) -> bool { 595,533 ( 0.01%) let restriction = match self { . // Public items are visible everywhere. . Visibility::Public => return true, . // Private items from other crates are visible nowhere. . Visibility::Invisible => return false, . // Restricted items are visible in an arbitrary local module. 14,184 ( 0.00%) Visibility::Restricted(other) if other.krate != module.krate => return false, . Visibility::Restricted(module) => module, . }; . 46 ( 0.00%) tree.is_descendant_of(module, restriction) 119,088 ( 0.00%) } . . /// Returns `true` if this visibility is at least as accessible as the given visibility 16,209 ( 0.00%) pub fn is_at_least(self, vis: Visibility, tree: T) -> bool { 52,828 ( 0.00%) let vis_restriction = match vis { . Visibility::Public => return self == Visibility::Public, . Visibility::Invisible => return true, . Visibility::Restricted(module) => module, . }; . . self.is_accessible_from(vis_restriction, tree) 16,209 ( 0.00%) } . . // Returns `true` if this item is visible anywhere in the local crate. . pub fn is_visible_locally(self) -> bool { . match self { . Visibility::Public => true, . Visibility::Restricted(def_id) => def_id.is_local(), . Visibility::Invisible => false, . } . } . . pub fn is_public(self) -> bool { 13,842 ( 0.00%) matches!(self, Visibility::Public) 6,921 ( 0.00%) } . } . . /// The crate variances map is computed during typeck and contains the . /// variance of every item in the local crate. You should not use it . /// directly, because to do so will make your pass dependent on the . /// HIR of every item in the local crate. Instead, use . /// `tcx.variances_of()` to get the variance for a *particular* . /// item. -- line 365 ---------------------------------------- -- line 509 ---------------------------------------- . #[derive(Clone, Copy, Lift)] . pub struct Predicate<'tcx> { . inner: &'tcx PredicateInner<'tcx>, . } . . impl<'tcx> PartialEq for Predicate<'tcx> { . fn eq(&self, other: &Self) -> bool { . // `self.kind` is always interned. 2,245,186 ( 0.04%) ptr::eq(self.inner, other.inner) 1,229,111 ( 0.02%) } . } . . impl Hash for Predicate<'_> { . fn hash(&self, s: &mut H) { . (self.inner as *const PredicateInner<'_>).hash(s) . } . } . . impl<'tcx> Eq for Predicate<'tcx> {} . . impl<'tcx> Predicate<'tcx> { . /// Gets the inner `Binder<'tcx, PredicateKind<'tcx>>`. . #[inline] . pub fn kind(self) -> Binder<'tcx, PredicateKind<'tcx>> { 6,768,286 ( 0.12%) self.inner.kind . } . . /// Flips the polarity of a Predicate. . /// . /// Given `T: Trait` predicate it returns `T: !Trait` and given `T: !Trait` returns `T: Trait`. . pub fn flip_polarity(&self, tcx: TyCtxt<'tcx>) -> Option> { . let kind = self . .inner -- line 541 ---------------------------------------- -- line 567 ---------------------------------------- . flags: _, . outer_exclusive_binder: _, . } = self.inner; . . kind.hash_stable(hcx, hasher); . } . } . 29,904,524 ( 0.52%) #[derive(Clone, Copy, PartialEq, Eq, Hash, TyEncodable, TyDecodable)] 40,360,534 ( 0.70%) #[derive(HashStable, TypeFoldable)] . pub enum PredicateKind<'tcx> { . /// Corresponds to `where Foo: Bar`. `Foo` here would be . /// the `Self` type of the trait reference and `A`, `B`, and `C` . /// would be the type parameters. . Trait(TraitPredicate<'tcx>), . . /// `where 'a: 'b` . RegionOutlives(RegionOutlivesPredicate<'tcx>), -- line 584 ---------------------------------------- -- line 594 ---------------------------------------- . WellFormed(GenericArg<'tcx>), . . /// Trait must be object-safe. . ObjectSafe(DefId), . . /// No direct syntax. May be thought of as `where T: FnFoo<...>` . /// for some substitutions `...` and `T` being a closure type. . /// Satisfied (or refuted) once we know the closure's kind. 2,149 ( 0.00%) ClosureKind(DefId, SubstsRef<'tcx>, ClosureKind), . . /// `T1 <: T2` . /// . /// This obligation is created most often when we have two . /// unresolved type variables and hence don't have enough . /// information to process the subtyping obligation yet. 7,700 ( 0.00%) Subtype(SubtypePredicate<'tcx>), . . /// `T1` coerced to `T2` . /// . /// Like a subtyping obligation, this is created most often . /// when we have two unresolved type variables and hence . /// don't have enough information to process the coercion . /// obligation yet. At the moment, we actually process coercions . /// very much like subtyping and don't handle the full coercion -- line 617 ---------------------------------------- -- line 645 ---------------------------------------- . } . . impl<'tcx> Predicate<'tcx> { . /// Performs a substitution suitable for going from a . /// poly-trait-ref to supertraits that must hold if that . /// poly-trait-ref holds. This is slightly different from a normal . /// substitution in terms of what happens with bound regions. See . /// lengthy comment below for details. 89,649 ( 0.00%) pub fn subst_supertrait( . self, . tcx: TyCtxt<'tcx>, . trait_ref: &ty::PolyTraitRef<'tcx>, . ) -> Predicate<'tcx> { . // The interaction between HRTB and supertraits is not entirely . // obvious. Let me walk you (and myself) through an example. . // . // Let's start with an easy case. Consider two traits: -- line 661 ---------------------------------------- -- line 731 ---------------------------------------- . // ['x, 'b] . let bound_pred = self.kind(); . let pred_bound_vars = bound_pred.bound_vars(); . let trait_bound_vars = trait_ref.bound_vars(); . // 1) Self: Bar1<'a, '^0.0> -> Self: Bar1<'a, '^0.1> . let shifted_pred = . tcx.shift_bound_var_indices(trait_bound_vars.len(), bound_pred.skip_binder()); . // 2) Self: Bar1<'a, '^0.1> -> T: Bar1<'^0.0, '^0.1> 9,961 ( 0.00%) let new = shifted_pred.subst(tcx, trait_ref.skip_binder().substs); . // 3) ['x] + ['b] -> ['x, 'b] . let bound_vars = . tcx.mk_bound_variable_kinds(trait_bound_vars.iter().chain(pred_bound_vars)); 89,649 ( 0.00%) tcx.reuse_or_mk_predicate(self, ty::Binder::bind_with_vars(new, bound_vars)) 69,727 ( 0.00%) } . } . 177,827 ( 0.00%) #[derive(Clone, Copy, PartialEq, Eq, Hash, TyEncodable, TyDecodable)] 4,485,398 ( 0.08%) #[derive(HashStable, TypeFoldable)] . pub struct TraitPredicate<'tcx> { . pub trait_ref: TraitRef<'tcx>, . 3,767,656 ( 0.07%) pub constness: BoundConstness, . 6,411,488 ( 0.11%) pub polarity: ImplPolarity, . } . . pub type PolyTraitPredicate<'tcx> = ty::Binder<'tcx, TraitPredicate<'tcx>>; . . impl<'tcx> TraitPredicate<'tcx> { 1,140,280 ( 0.02%) pub fn remap_constness(&mut self, tcx: TyCtxt<'tcx>, param_env: &mut ParamEnv<'tcx>) { 997,907 ( 0.02%) if unlikely!(Some(self.trait_ref.def_id) == tcx.lang_items().drop_trait()) { . // remap without changing constness of this predicate. . // this is because `T: ~const Drop` has a different meaning to `T: Drop` 162 ( 0.00%) param_env.remap_constness_with(self.constness) . } else { 142,454 ( 0.00%) *param_env = param_env.with_constness(self.constness.and(param_env.constness())) . } 855,210 ( 0.01%) } . . /// Remap the constness of this predicate before emitting it for diagnostics. . pub fn remap_constness_diag(&mut self, param_env: ParamEnv<'tcx>) { . // this is different to `remap_constness` that callees want to print this predicate . // in case of selection errors. `T: ~const Drop` bounds cannot end up here when the . // param_env is not const because we it is always satisfied in non-const contexts. . if let hir::Constness::NotConst = param_env.constness() { . self.constness = ty::BoundConstness::NotConst; . } . } . . pub fn def_id(self) -> DefId { 128,162 ( 0.00%) self.trait_ref.def_id 64,081 ( 0.00%) } . 197,993 ( 0.00%) pub fn self_ty(self) -> Ty<'tcx> { 593,979 ( 0.01%) self.trait_ref.self_ty() 395,986 ( 0.01%) } . } . . impl<'tcx> PolyTraitPredicate<'tcx> { . pub fn def_id(self) -> DefId { . // Ok to skip binder since trait `DefId` does not care about regions. . self.skip_binder().def_id() 1,702,298 ( 0.03%) } . . pub fn self_ty(self) -> ty::Binder<'tcx, Ty<'tcx>> { . self.map_bound(|trait_ref| trait_ref.self_ty()) . } . . /// Remap the constness of this predicate before emitting it for diagnostics. . pub fn remap_constness_diag(&mut self, param_env: ParamEnv<'tcx>) { . *self = self.map_bound(|mut p| { . p.remap_constness_diag(param_env); . p . }); . } . } . 54 ( 0.00%) #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, TyEncodable, TyDecodable)] 82,537 ( 0.00%) #[derive(HashStable, TypeFoldable)] 70,468 ( 0.00%) pub struct OutlivesPredicate(pub A, pub B); // `A: B` . pub type RegionOutlivesPredicate<'tcx> = OutlivesPredicate, ty::Region<'tcx>>; . pub type TypeOutlivesPredicate<'tcx> = OutlivesPredicate, ty::Region<'tcx>>; . pub type PolyRegionOutlivesPredicate<'tcx> = ty::Binder<'tcx, RegionOutlivesPredicate<'tcx>>; . pub type PolyTypeOutlivesPredicate<'tcx> = ty::Binder<'tcx, TypeOutlivesPredicate<'tcx>>; . . /// Encodes that `a` must be a subtype of `b`. The `a_is_expected` flag indicates . /// whether the `a` type is the type that we should label as "expected" when . /// presenting user diagnostics. . #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, TyEncodable, TyDecodable)] 27,571 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub struct SubtypePredicate<'tcx> { 43,830 ( 0.00%) pub a_is_expected: bool, . pub a: Ty<'tcx>, . pub b: Ty<'tcx>, . } . pub type PolySubtypePredicate<'tcx> = ty::Binder<'tcx, SubtypePredicate<'tcx>>; . . /// Encodes that we have to coerce *from* the `a` type to the `b` type. . #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, TyEncodable, TyDecodable)] 52 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub struct CoercePredicate<'tcx> { . pub a: Ty<'tcx>, . pub b: Ty<'tcx>, . } . pub type PolyCoercePredicate<'tcx> = ty::Binder<'tcx, CoercePredicate<'tcx>>; . 50,568 ( 0.00%) #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, PartialOrd, Ord, TyEncodable, TyDecodable)] 65,261 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub enum Term<'tcx> { . Ty(Ty<'tcx>), . Const(&'tcx Const<'tcx>), . } . . impl<'tcx> From> for Term<'tcx> { . fn from(ty: Ty<'tcx>) -> Self { . Term::Ty(ty) 7,122 ( 0.00%) } . } . . impl<'tcx> From<&'tcx Const<'tcx>> for Term<'tcx> { . fn from(c: &'tcx Const<'tcx>) -> Self { . Term::Const(c) . } . } . . impl<'tcx> Term<'tcx> { . pub fn ty(&self) -> Option> { 10,566 ( 0.00%) if let Term::Ty(ty) = self { Some(ty) } else { None } 5,283 ( 0.00%) } . } . . /// This kind of predicate has no *direct* correspondent in the . /// syntax, but it roughly corresponds to the syntactic forms: . /// . /// 1. `T: TraitRef<..., Item = Type>` . /// 2. `>::Item == Type` (NYI) . /// . /// In particular, form #1 is "desugared" to the combination of a . /// normal trait predicate (`T: TraitRef<...>`) and one of these . /// predicates. Form #2 is a broader form in that it also permits . /// equality between arbitrary types. Processing an instance of . /// Form #2 eventually yields one of these `ProjectionPredicate` . /// instances to normalize the LHS. 49 ( 0.00%) #[derive(Copy, Clone, PartialEq, Eq, Hash, TyEncodable, TyDecodable)] 16,061 ( 0.00%) #[derive(HashStable, TypeFoldable)] . pub struct ProjectionPredicate<'tcx> { . pub projection_ty: ProjectionTy<'tcx>, 25,974 ( 0.00%) pub term: Term<'tcx>, . } . . pub type PolyProjectionPredicate<'tcx> = Binder<'tcx, ProjectionPredicate<'tcx>>; . . impl<'tcx> PolyProjectionPredicate<'tcx> { . /// Returns the `DefId` of the trait of the associated item being projected. . #[inline] . pub fn trait_def_id(&self, tcx: TyCtxt<'tcx>) -> DefId { 380 ( 0.00%) self.skip_binder().projection_ty.trait_def_id(tcx) . } . . /// Get the [PolyTraitRef] required for this projection to be well formed. . /// Note that for generic associated types the predicates of the associated . /// type also need to be checked. . #[inline] . pub fn required_poly_trait_ref(&self, tcx: TyCtxt<'tcx>) -> PolyTraitRef<'tcx> { . // Note: unlike with `TraitRef::to_poly_trait_ref()`, . // `self.0.trait_ref` is permitted to have escaping regions. . // This is because here `self` has a `Binder` and so does our . // return value, so we are preserving the number of binding . // levels. 362 ( 0.00%) self.map_bound(|predicate| predicate.projection_ty.trait_ref(tcx)) . } . . pub fn term(&self) -> Binder<'tcx, Term<'tcx>> { . self.map_bound(|predicate| predicate.term) . } . . /// The `DefId` of the `TraitItem` for the associated type. . /// . /// Note that this is not the `DefId` of the `TraitRef` containing this . /// associated type, which is in `tcx.associated_item(projection_def_id()).container`. . pub fn projection_def_id(&self) -> DefId { . // Ok to skip binder since trait `DefId` does not care about regions. 940 ( 0.00%) self.skip_binder().projection_ty.item_def_id 470 ( 0.00%) } . } . . pub trait ToPolyTraitRef<'tcx> { . fn to_poly_trait_ref(&self) -> PolyTraitRef<'tcx>; . } . . impl<'tcx> ToPolyTraitRef<'tcx> for PolyTraitPredicate<'tcx> { 312,907 ( 0.01%) fn to_poly_trait_ref(&self) -> PolyTraitRef<'tcx> { 312,907 ( 0.01%) self.map_bound_ref(|trait_pred| trait_pred.trait_ref) 312,907 ( 0.01%) } . } . . pub trait ToPredicate<'tcx> { . fn to_predicate(self, tcx: TyCtxt<'tcx>) -> Predicate<'tcx>; . } . . impl<'tcx> ToPredicate<'tcx> for Binder<'tcx, PredicateKind<'tcx>> { . #[inline(always)] . fn to_predicate(self, tcx: TyCtxt<'tcx>) -> Predicate<'tcx> { . tcx.mk_predicate(self) . } . } . . impl<'tcx> ToPredicate<'tcx> for PolyTraitPredicate<'tcx> { 32,567 ( 0.00%) fn to_predicate(self, tcx: TyCtxt<'tcx>) -> Predicate<'tcx> { 162,835 ( 0.00%) self.map_bound(PredicateKind::Trait).to_predicate(tcx) 65,134 ( 0.00%) } . } . . impl<'tcx> ToPredicate<'tcx> for PolyRegionOutlivesPredicate<'tcx> { 2 ( 0.00%) fn to_predicate(self, tcx: TyCtxt<'tcx>) -> Predicate<'tcx> { 4 ( 0.00%) self.map_bound(PredicateKind::RegionOutlives).to_predicate(tcx) 4 ( 0.00%) } . } . . impl<'tcx> ToPredicate<'tcx> for PolyTypeOutlivesPredicate<'tcx> { 230 ( 0.00%) fn to_predicate(self, tcx: TyCtxt<'tcx>) -> Predicate<'tcx> { 460 ( 0.00%) self.map_bound(PredicateKind::TypeOutlives).to_predicate(tcx) 460 ( 0.00%) } . } . . impl<'tcx> ToPredicate<'tcx> for PolyProjectionPredicate<'tcx> { 1,911 ( 0.00%) fn to_predicate(self, tcx: TyCtxt<'tcx>) -> Predicate<'tcx> { 9,555 ( 0.00%) self.map_bound(PredicateKind::Projection).to_predicate(tcx) 3,822 ( 0.00%) } . } . . impl<'tcx> Predicate<'tcx> { 1,564,150 ( 0.03%) pub fn to_opt_poly_trait_pred(self) -> Option> { . let predicate = self.kind(); 4,692,450 ( 0.08%) match predicate.skip_binder() { 3,905,360 ( 0.07%) PredicateKind::Trait(t) => Some(predicate.rebind(t)), . PredicateKind::Projection(..) . | PredicateKind::Subtype(..) . | PredicateKind::Coerce(..) . | PredicateKind::RegionOutlives(..) . | PredicateKind::WellFormed(..) . | PredicateKind::ObjectSafe(..) . | PredicateKind::ClosureKind(..) . | PredicateKind::TypeOutlives(..) . | PredicateKind::ConstEvaluatable(..) . | PredicateKind::ConstEquate(..) 1,003 ( 0.00%) | PredicateKind::TypeWellFormedFromEnv(..) => None, . } 1,564,150 ( 0.03%) } . 641,444 ( 0.01%) pub fn to_opt_type_outlives(self) -> Option> { . let predicate = self.kind(); 1,282,888 ( 0.02%) match predicate.skip_binder() { 66 ( 0.00%) PredicateKind::TypeOutlives(data) => Some(predicate.rebind(data)), . PredicateKind::Trait(..) . | PredicateKind::Projection(..) . | PredicateKind::Subtype(..) . | PredicateKind::Coerce(..) . | PredicateKind::RegionOutlives(..) . | PredicateKind::WellFormed(..) . | PredicateKind::ObjectSafe(..) . | PredicateKind::ClosureKind(..) . | PredicateKind::ConstEvaluatable(..) . | PredicateKind::ConstEquate(..) 641,422 ( 0.01%) | PredicateKind::TypeWellFormedFromEnv(..) => None, . } 641,444 ( 0.01%) } . } . . /// Represents the bounds declared on a particular set of type . /// parameters. Should eventually be generalized into a flag list of . /// where-clauses. You can obtain an `InstantiatedPredicates` list from a . /// `GenericPredicates` by using the `instantiate` method. Note that this method . /// reflects an important semantic invariant of `InstantiatedPredicates`: while . /// the `GenericPredicates` are expressed in terms of the bound type -- line 1005 ---------------------------------------- -- line 1011 ---------------------------------------- . /// Example: . /// . /// struct Foo> { ... } . /// . /// Here, the `GenericPredicates` for `Foo` would contain a list of bounds like . /// `[[], [U:Bar]]`. Now if there were some particular reference . /// like `Foo`, then the `InstantiatedPredicates` would be `[[], . /// [usize:Bar]]`. 170,348 ( 0.00%) #[derive(Clone, Debug, TypeFoldable)] . pub struct InstantiatedPredicates<'tcx> { . pub predicates: Vec>, . pub spans: Vec, . } . . impl<'tcx> InstantiatedPredicates<'tcx> { 91 ( 0.00%) pub fn empty() -> InstantiatedPredicates<'tcx> { 103,082 ( 0.00%) InstantiatedPredicates { predicates: vec![], spans: vec![] } 91 ( 0.00%) } . . pub fn is_empty(&self) -> bool { . self.predicates.is_empty() 88 ( 0.00%) } . } . . #[derive(Copy, Clone, Debug, PartialEq, Eq, HashStable, TyEncodable, TyDecodable, TypeFoldable)] . pub struct OpaqueTypeKey<'tcx> { . pub def_id: DefId, . pub substs: SubstsRef<'tcx>, . } . -- line 1040 ---------------------------------------- -- line 1091 ---------------------------------------- . /// ``` . /// for<'a> fn(&'a u32) . /// ``` . /// . /// Once we "enter" into this `for<'a>` quantifier, we are in a . /// new universe that extends `U` -- in this new universe, we can . /// name the region `'a`, but that region was not nameable from . /// `U` because it was not in scope there. 360,259 ( 0.01%) pub fn next_universe(self) -> UniverseIndex { . UniverseIndex::from_u32(self.private.checked_add(1).unwrap()) 1,080,777 ( 0.02%) } . . /// Returns `true` if `self` can name a name from `other` -- in other words, . /// if the set of names in `self` is a superset of those in . /// `other` (`self >= other`). . pub fn can_name(self, other: UniverseIndex) -> bool { 81,936 ( 0.00%) self.private >= other.private 40,968 ( 0.00%) } . . /// Returns `true` if `self` cannot name some names from `other` -- in other . /// words, if the set of names in `self` is a strict subset of . /// those in `other` (`self < other`). . pub fn cannot_name(self, other: UniverseIndex) -> bool { 58 ( 0.00%) self.private < other.private 29 ( 0.00%) } . } . . /// The "placeholder index" fully defines a placeholder region, type, or const. Placeholders are . /// identified by both a universe, as well as a name residing within that universe. Distinct bound . /// regions/types/consts within the same universe simply have an unknown relationship to one . /// another. . #[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, TyEncodable, TyDecodable, PartialOrd, Ord)] . pub struct Placeholder { 822 ( 0.00%) pub universe: UniverseIndex, 399 ( 0.00%) pub name: T, . } . . impl<'a, T> HashStable> for Placeholder . where . T: HashStable>, . { . fn hash_stable(&self, hcx: &mut StableHashingContext<'a>, hasher: &mut StableHasher) { . self.universe.hash_stable(hcx, hasher); -- line 1133 ---------------------------------------- -- line 1194 ---------------------------------------- . /// aren't allowed to call that query: it is equal to `type_of(const_param)` which is . /// trivial to compute. . /// . /// If we now want to use that constant in a place which potentionally needs its type . /// we also pass the type of its `const_param`. This is the point of `WithOptConstParam`, . /// except that instead of a `Ty` we bundle the `DefId` of the const parameter. . /// Meaning that we need to use `type_of(const_param_did)` if `const_param_did` is `Some` . /// to get the type of `did`. 1,903 ( 0.00%) #[derive(Copy, Clone, Debug, TypeFoldable, Lift, TyEncodable, TyDecodable)] . #[derive(PartialEq, Eq, PartialOrd, Ord)] . #[derive(Hash, HashStable)] . pub struct WithOptConstParam { 9,962 ( 0.00%) pub did: T, . /// The `DefId` of the corresponding generic parameter in case `did` is . /// a const argument. . /// . /// Note that even if `did` is a const argument, this may still be `None`. . /// All queries taking `WithOptConstParam` start by calling `tcx.opt_const_param_of(def.did)` . /// to potentially update `param_did` in the case it is `None`. 6,524 ( 0.00%) pub const_param_did: Option, . } . . impl WithOptConstParam { . /// Creates a new `WithOptConstParam` setting `const_param_did` to `None`. . #[inline(always)] . pub fn unknown(did: T) -> WithOptConstParam { . WithOptConstParam { did, const_param_did: None } 17,553 ( 0.00%) } . } . . impl WithOptConstParam { . /// Returns `Some((did, param_did))` if `def_id` is a const argument, . /// `None` otherwise. . #[inline(always)] . pub fn try_lookup(did: LocalDefId, tcx: TyCtxt<'_>) -> Option<(LocalDefId, DefId)> { . tcx.opt_const_param_of(did).map(|param_did| (did, param_did)) . } . . /// In case `self` is unknown but `self.did` is a const argument, this returns . /// a `WithOptConstParam` with the correct `const_param_did`. . #[inline(always)] . pub fn try_upgrade(self, tcx: TyCtxt<'_>) -> Option> { 2,924 ( 0.00%) if self.const_param_did.is_none() { 4,758 ( 0.00%) if let const_param_did @ Some(_) = tcx.opt_const_param_of(self.did) { . return Some(WithOptConstParam { did: self.did, const_param_did }); . } . } . . None 33 ( 0.00%) } . . pub fn to_global(self) -> WithOptConstParam { . WithOptConstParam { did: self.did.to_def_id(), const_param_did: self.const_param_did } 77 ( 0.00%) } . 252 ( 0.00%) pub fn def_id_for_type_of(self) -> DefId { 651 ( 0.00%) if let Some(did) = self.const_param_did { did } else { self.did.to_def_id() } 63 ( 0.00%) } . } . . impl WithOptConstParam { 1,925 ( 0.00%) pub fn as_local(self) -> Option> { . self.did . .as_local() . .map(|did| WithOptConstParam { did, const_param_did: self.const_param_did }) 1,925 ( 0.00%) } . . pub fn as_const_arg(self) -> Option<(LocalDefId, DefId)> { 2,544 ( 0.00%) if let Some(param_did) = self.const_param_did { 1,255 ( 0.00%) if let Some(did) = self.did.as_local() { . return Some((did, param_did)); . } . } . . None 102 ( 0.00%) } . . pub fn is_local(self) -> bool { . self.did.is_local() . } . 246 ( 0.00%) pub fn def_id_for_type_of(self) -> DefId { . self.const_param_did.unwrap_or(self.did) 246 ( 0.00%) } . } . . /// When type checking, we use the `ParamEnv` to track . /// details about the set of where-clauses that are in scope at this . /// particular point. . #[derive(Copy, Clone, Hash, PartialEq, Eq)] . pub struct ParamEnv<'tcx> { . /// This packs both caller bounds and the reveal enum into one pointer. -- line 1285 ---------------------------------------- -- line 1302 ---------------------------------------- . reveal: traits::Reveal, . constness: hir::Constness, . } . . unsafe impl rustc_data_structures::tagged_ptr::Tag for ParamTag { . const BITS: usize = 2; . #[inline] . fn into_usize(self) -> usize { 101,643 ( 0.00%) match self { . Self { reveal: traits::Reveal::UserFacing, constness: hir::Constness::NotConst } => 0, . Self { reveal: traits::Reveal::All, constness: hir::Constness::NotConst } => 1, . Self { reveal: traits::Reveal::UserFacing, constness: hir::Constness::Const } => 2, . Self { reveal: traits::Reveal::All, constness: hir::Constness::Const } => 3, . } . } . #[inline] . unsafe fn from_usize(ptr: usize) -> Self { 2,164,874 ( 0.04%) match ptr { . 0 => Self { reveal: traits::Reveal::UserFacing, constness: hir::Constness::NotConst }, . 1 => Self { reveal: traits::Reveal::All, constness: hir::Constness::NotConst }, . 2 => Self { reveal: traits::Reveal::UserFacing, constness: hir::Constness::Const }, . 3 => Self { reveal: traits::Reveal::All, constness: hir::Constness::Const }, . _ => std::hint::unreachable_unchecked(), . } . } . } -- line 1327 ---------------------------------------- -- line 1405 ---------------------------------------- . pub fn new( . caller_bounds: &'tcx List>, . reveal: Reveal, . constness: hir::Constness, . ) -> Self { . ty::ParamEnv { packed: CopyTaggedPtr::new(caller_bounds, ParamTag { reveal, constness }) } . } . 12 ( 0.00%) pub fn with_user_facing(mut self) -> Self { . self.packed.set_tag(ParamTag { reveal: Reveal::UserFacing, ..self.packed.tag() }); . self 12 ( 0.00%) } . . #[inline] . pub fn with_constness(mut self, constness: hir::Constness) -> Self { . self.packed.set_tag(ParamTag { constness, ..self.packed.tag() }); . self . } . . #[inline] -- line 1424 ---------------------------------------- -- line 1430 ---------------------------------------- . #[inline] . pub fn without_const(mut self) -> Self { . self.packed.set_tag(ParamTag { constness: hir::Constness::NotConst, ..self.packed.tag() }); . self . } . . #[inline] . pub fn remap_constness_with(&mut self, mut constness: ty::BoundConstness) { 30,653 ( 0.00%) *self = self.with_constness(constness.and(self.constness())) . } . . /// Returns a new parameter environment with the same clauses, but . /// which "reveals" the true results of projections in all cases . /// (even for associated types that are specializable). This is . /// the desired behavior during codegen and certain other special . /// contexts; normally though we want to use `Reveal::UserFacing`, . /// which is the default. . /// All opaque types in the caller_bounds of the `ParamEnv` . /// will be normalized to their underlying types. . /// See PR #65989 and issue #65918 for more details 3,560 ( 0.00%) pub fn with_reveal_all_normalized(self, tcx: TyCtxt<'tcx>) -> Self { . if self.packed.tag().reveal == traits::Reveal::All { . return self; . } . . ParamEnv::new( . tcx.normalize_opaque_types(self.caller_bounds()), . Reveal::All, . self.constness(), . ) 4,005 ( 0.00%) } . . /// Returns this same environment but with no caller bounds. . #[inline] . pub fn without_caller_bounds(self) -> Self { . Self::new(List::empty(), self.reveal(), self.constness()) . } . . /// Creates a suitable environment in which to perform trait -- line 1468 ---------------------------------------- -- line 1472 ---------------------------------------- . /// pair it with the empty environment. This improves caching and is generally . /// invisible. . /// . /// N.B., we preserve the environment when type-checking because it . /// is possible for the user to have wacky where-clauses like . /// `where Box: Copy`, which are clearly never . /// satisfiable. We generally want to behave as if they were true, . /// although the surrounding function is never reachable. 253,144 ( 0.00%) pub fn and>(self, value: T) -> ParamEnvAnd<'tcx, T> { . match self.reveal() { . Reveal::UserFacing => ParamEnvAnd { param_env: self, value }, . . Reveal::All => { 128 ( 0.00%) if value.is_global() { . ParamEnvAnd { param_env: self.without_caller_bounds(), value } . } else { . ParamEnvAnd { param_env: self, value } . } . } . } 243,333 ( 0.00%) } . } . . // FIXME(ecstaticmorse): Audit all occurrences of `without_const().to_predicate(tcx)` to ensure that . // the constness of trait bounds is being propagated correctly. . impl<'tcx> PolyTraitRef<'tcx> { . #[inline] . pub fn with_constness(self, constness: BoundConstness) -> PolyTraitPredicate<'tcx> { 10,236 ( 0.00%) self.map_bound(|trait_ref| ty::TraitPredicate { . trait_ref, . constness, . polarity: ty::ImplPolarity::Positive, . }) . } . #[inline] . pub fn without_const(self) -> PolyTraitPredicate<'tcx> { . self.with_constness(BoundConstness::NotConst) . } . } . 6,608 ( 0.00%) #[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, TypeFoldable)] . pub struct ParamEnvAnd<'tcx, T> { 74,382 ( 0.00%) pub param_env: ParamEnv<'tcx>, 1,158,159 ( 0.02%) pub value: T, . } . . impl<'tcx, T> ParamEnvAnd<'tcx, T> { . pub fn into_parts(self) -> (ParamEnv<'tcx>, T) { . (self.param_env, self.value) . } . . #[inline] . pub fn without_const(mut self) -> Self { . self.param_env = self.param_env.without_const(); 3,807 ( 0.00%) self . } . } . . impl<'a, 'tcx, T> HashStable> for ParamEnvAnd<'tcx, T> . where . T: HashStable>, . { . fn hash_stable(&self, hcx: &mut StableHashingContext<'a>, hasher: &mut StableHasher) { -- line 1534 ---------------------------------------- -- line 1542 ---------------------------------------- . #[derive(Copy, Clone, Debug, HashStable)] . pub struct Destructor { . /// The `DefId` of the destructor method . pub did: DefId, . /// The constness of the destructor method . pub constness: hir::Constness, . } . 8,228 ( 0.00%) bitflags! { 11,421 ( 0.00%) #[derive(HashStable, TyEncodable, TyDecodable)] . pub struct VariantFlags: u32 { . const NO_VARIANT_FLAGS = 0; . /// Indicates whether the field list of this variant is `#[non_exhaustive]`. . const IS_FIELD_LIST_NON_EXHAUSTIVE = 1 << 0; . /// Indicates whether this variant was obtained as part of recovering from . /// a syntactic error. May be incomplete or bogus. . const IS_RECOVERED = 1 << 1; . } . } . . /// Definition of a variant -- a struct's fields or an enum variant. 182,101 ( 0.00%) #[derive(Debug, HashStable, TyEncodable, TyDecodable)] . pub struct VariantDef { . /// `DefId` that identifies the variant itself. . /// If this variant belongs to a struct or union, then this is a copy of its `DefId`. . pub def_id: DefId, . /// `DefId` that identifies the variant's constructor. . /// If this variant is a struct variant, then this is `None`. . pub ctor_def_id: Option, . /// Variant or struct name. -- line 1571 ---------------------------------------- -- line 1592 ---------------------------------------- . /// `parent_did` is the `DefId` of the `AdtDef` representing the enum or struct that . /// owns this variant. It is used for checking if a struct has `#[non_exhaustive]` w/out having . /// to go through the redirect of checking the ctor's attributes - but compiling a small crate . /// requires loading the `AdtDef`s for all the structs in the universe (e.g., coherence for any . /// built-in trait), and we do not want to load attributes twice. . /// . /// If someone speeds up attribute loading to not be a performance concern, they can . /// remove this hack and use the constructor `DefId` everywhere. 2,496 ( 0.00%) pub fn new( . name: Symbol, . variant_did: Option, . ctor_def_id: Option, . discr: VariantDiscr, . fields: Vec, . ctor_kind: CtorKind, . adt_kind: AdtKind, . parent_did: DefId, -- line 1608 ---------------------------------------- -- line 1611 ---------------------------------------- . ) -> Self { . debug!( . "VariantDef::new(name = {:?}, variant_did = {:?}, ctor_def_id = {:?}, discr = {:?}, . fields = {:?}, ctor_kind = {:?}, adt_kind = {:?}, parent_did = {:?})", . name, variant_did, ctor_def_id, discr, fields, ctor_kind, adt_kind, parent_did, . ); . . let mut flags = VariantFlags::NO_VARIANT_FLAGS; 312 ( 0.00%) if is_field_list_non_exhaustive { . flags |= VariantFlags::IS_FIELD_LIST_NON_EXHAUSTIVE; . } . 936 ( 0.00%) if recovered { . flags |= VariantFlags::IS_RECOVERED; . } . 2,808 ( 0.00%) VariantDef { . def_id: variant_did.unwrap_or(parent_did), . ctor_def_id, . name, . discr, 1,248 ( 0.00%) fields, . ctor_kind, . flags, . } 1,248 ( 0.00%) } . . /// Is this field list non-exhaustive? . #[inline] . pub fn is_field_list_non_exhaustive(&self) -> bool { . self.flags.intersects(VariantFlags::IS_FIELD_LIST_NON_EXHAUSTIVE) . } . . /// Was this variant obtained as part of recovering from a syntactic error? . #[inline] . pub fn is_recovered(&self) -> bool { . self.flags.intersects(VariantFlags::IS_RECOVERED) . } . . /// Computes the `Ident` of this variant by looking up the `Span` 11,683 ( 0.00%) pub fn ident(&self, tcx: TyCtxt<'_>) -> Ident { 6,676 ( 0.00%) Ident::new(self.name, tcx.def_ident_span(self.def_id).unwrap()) 15,021 ( 0.00%) } . } . 107,195 ( 0.00%) #[derive(Copy, Clone, Debug, PartialEq, Eq, TyEncodable, TyDecodable, HashStable)] . pub enum VariantDiscr { . /// Explicit value for this variant, i.e., `X = 123`. . /// The `DefId` corresponds to the embedded constant. . Explicit(DefId), . . /// The previous variant's discriminant plus one. . /// For efficiency reasons, the distance from the . /// last `Explicit` discriminant is being stored, . /// or `0` for the first variant, if it has none. . Relative(u32), . } . 227,493 ( 0.00%) #[derive(Debug, HashStable, TyEncodable, TyDecodable)] . pub struct FieldDef { . pub did: DefId, . pub name: Symbol, . pub vis: Visibility, . } . 499 ( 0.00%) bitflags! { . #[derive(TyEncodable, TyDecodable, Default, HashStable)] . pub struct ReprFlags: u8 { . const IS_C = 1 << 0; . const IS_SIMD = 1 << 1; . const IS_TRANSPARENT = 1 << 2; . // Internal only for now. If true, don't reorder fields. . const IS_LINEAR = 1 << 3; . // If true, don't expose any niche to type's context. -- line 1684 ---------------------------------------- -- line 1689 ---------------------------------------- . // Any of these flags being set prevent field reordering optimisation. . const IS_UNOPTIMISABLE = ReprFlags::IS_C.bits . | ReprFlags::IS_SIMD.bits . | ReprFlags::IS_LINEAR.bits; . } . } . . /// Represents the repr options provided by the user, 146,990 ( 0.00%) #[derive(Copy, Clone, Debug, Eq, PartialEq, TyEncodable, TyDecodable, Default, HashStable)] . pub struct ReprOptions { . pub int: Option, . pub align: Option, . pub pack: Option, . pub flags: ReprFlags, . /// The seed to be used for randomizing a type's layout . /// . /// Note: This could technically be a `[u8; 16]` (a `u128`) which would -- line 1705 ---------------------------------------- -- line 1706 ---------------------------------------- . /// be the "most accurate" hash as it'd encompass the item and crate . /// hash without loss, but it does pay the price of being larger. . /// Everything's a tradeoff, a `u64` seed should be sufficient for our . /// purposes (primarily `-Z randomize-layout`) . pub field_shuffle_seed: u64, . } . . impl ReprOptions { 1,560 ( 0.00%) pub fn new(tcx: TyCtxt<'_>, did: DefId) -> ReprOptions { . let mut flags = ReprFlags::empty(); . let mut size = None; . let mut max_align: Option = None; . let mut min_pack: Option = None; . . // Generate a deterministically-derived seed from the item's path hash . // to allow for cross-crate compilation to actually work . let mut field_shuffle_seed = tcx.def_path_hash(did).0.to_smaller_hash(); . . // If the user defined a custom seed for layout randomization, xor the item's . // path hash with the user defined seed, this will allowing determinism while . // still allowing users to further randomize layout generation for e.g. fuzzing 360 ( 0.00%) if let Some(user_seed) = tcx.sess.opts.debugging_opts.layout_seed { . field_shuffle_seed ^= user_seed; . } . 480 ( 0.00%) for attr in tcx.get_attrs(did).iter() { 7,350 ( 0.00%) for r in attr::find_repr_attrs(&tcx.sess, attr) { . flags.insert(match r { . attr::ReprC => ReprFlags::IS_C, . attr::ReprPacked(pack) => { . let pack = Align::from_bytes(pack as u64).unwrap(); . min_pack = Some(if let Some(min_pack) = min_pack { . min_pack.min(pack) . } else { . pack -- line 1740 ---------------------------------------- -- line 1753 ---------------------------------------- . ReprFlags::empty() . } . }); . } . } . . // If `-Z randomize-layout` was enabled for the type definition then we can . // consider performing layout randomization 960 ( 0.00%) if tcx.sess.opts.debugging_opts.randomize_layout { . flags.insert(ReprFlags::RANDOMIZE_LAYOUT); . } . . // This is here instead of layout because the choice must make it into metadata. 720 ( 0.00%) if !tcx.consider_optimizing(|| format!("Reorder fields of {:?}", tcx.def_path_str(did))) { . flags.insert(ReprFlags::IS_LINEAR); . } . 240 ( 0.00%) Self { int: size, align: max_align, pack: min_pack, flags, field_shuffle_seed } 3,360 ( 0.00%) } . . #[inline] . pub fn simd(&self) -> bool { . self.flags.contains(ReprFlags::IS_SIMD) . } . . #[inline] . pub fn c(&self) -> bool { -- line 1779 ---------------------------------------- -- line 1798 ---------------------------------------- . #[inline] . pub fn hide_niche(&self) -> bool { . self.flags.contains(ReprFlags::HIDE_NICHE) . } . . /// Returns the discriminant type, given these `repr` options. . /// This must only be called on enums! . pub fn discr_type(&self) -> attr::IntType { 3,291 ( 0.00%) self.int.unwrap_or(attr::SignedInt(ast::IntTy::Isize)) 1,994 ( 0.00%) } . . /// Returns `true` if this `#[repr()]` should inhabit "smart enum . /// layout" optimizations, such as representing `Foo<&T>` as a . /// single pointer. . pub fn inhibit_enum_layout_opt(&self) -> bool { 10 ( 0.00%) self.c() || self.int.is_some() . } . . /// Returns `true` if this `#[repr()]` should inhibit struct field reordering . /// optimizations, such as with `repr(C)`, `repr(packed(1))`, or `repr()`. . pub fn inhibit_struct_field_reordering_opt(&self) -> bool { 30 ( 0.00%) if let Some(pack) = self.pack { . if pack.bytes() == 1 { . return true; . } . } . 60 ( 0.00%) self.flags.intersects(ReprFlags::IS_UNOPTIMISABLE) || self.int.is_some() . } . . /// Returns `true` if this type is valid for reordering and `-Z randomize-layout` . /// was enabled for its declaration crate . pub fn can_randomize_type_layout(&self) -> bool { 15 ( 0.00%) !self.inhibit_struct_field_reordering_opt() . && self.flags.contains(ReprFlags::RANDOMIZE_LAYOUT) . } . . /// Returns `true` if this `#[repr()]` should inhibit union ABI optimisations. . pub fn inhibit_union_abi_opt(&self) -> bool { . self.c() . } . } . . impl<'tcx> FieldDef { . /// Returns the type of this field. The resulting type is not normalized. The `subst` is . /// typically obtained via the second field of [`TyKind::Adt`]. 74,753 ( 0.00%) pub fn ty(&self, tcx: TyCtxt<'tcx>, subst: SubstsRef<'tcx>) -> Ty<'tcx> { 21,358 ( 0.00%) tcx.type_of(self.did).subst(tcx, subst) 85,432 ( 0.00%) } . . /// Computes the `Ident` of this variant by looking up the `Span` 14,007 ( 0.00%) pub fn ident(&self, tcx: TyCtxt<'_>) -> Ident { 8,004 ( 0.00%) Ident::new(self.name, tcx.def_ident_span(self.did).unwrap()) 18,009 ( 0.00%) } . } . . pub type Attributes<'tcx> = &'tcx [ast::Attribute]; . . #[derive(Debug, PartialEq, Eq)] . pub enum ImplOverlapKind { . /// These impls are always allowed to overlap. . Permitted { -- line 1859 ---------------------------------------- -- line 1891 ---------------------------------------- . /// marker traits. . /// 4. Neither of the impls can have any where-clauses. . /// . /// Once `traitobject` 0.1.0 is no longer an active concern, this hack can be removed. . Issue33140, . } . . impl<'tcx> TyCtxt<'tcx> { 44,496 ( 0.00%) pub fn typeck_body(self, body: hir::BodyId) -> &'tcx TypeckResults<'tcx> { 11,124 ( 0.00%) self.typeck(self.hir().body_owner_def_id(body)) 44,496 ( 0.00%) } . . pub fn provided_trait_methods(self, id: DefId) -> impl 'tcx + Iterator { . self.associated_items(id) . .in_definition_order() . .filter(|item| item.kind == AssocKind::Fn && item.defaultness.has_value()) . } . . fn item_name_from_hir(self, def_id: DefId) -> Option { . self.hir().get_if_local(def_id).and_then(|node| node.ident()) . } . 108 ( 0.00%) fn item_name_from_def_id(self, def_id: DefId) -> Option { 12 ( 0.00%) if def_id.index == CRATE_DEF_INDEX { . Some(self.crate_name(def_id.krate)) . } else { 36 ( 0.00%) let def_key = self.def_key(def_id); 60 ( 0.00%) match def_key.disambiguated_data.data { . // The name of a constructor is that of its parent. . rustc_hir::definitions::DefPathData::Ctor => self.item_name_from_def_id(DefId { . krate: def_id.krate, . index: def_key.parent.unwrap(), . }), 24 ( 0.00%) _ => def_key.disambiguated_data.data.get_opt_name(), . } . } 96 ( 0.00%) } . . /// Look up the name of an item across crates. This does not look at HIR. . /// . /// When possible, this function should be used for cross-crate lookups over . /// [`opt_item_name`] to avoid invalidating the incremental cache. If you . /// need to handle items without a name, or HIR items that will not be . /// serialized cross-crate, or if you need the span of the item, use . /// [`opt_item_name`] instead. . /// . /// [`opt_item_name`]: Self::opt_item_name 84 ( 0.00%) pub fn item_name(self, id: DefId) -> Symbol { . // Look at cross-crate items first to avoid invalidating the incremental cache . // unless we have to. 12 ( 0.00%) self.item_name_from_def_id(id).unwrap_or_else(|| { . bug!("item_name: no name for {:?}", self.def_path(id)); . }) 60 ( 0.00%) } . . /// Look up the name and span of an item or [`Node`]. . /// . /// See [`item_name`][Self::item_name] for more information. . pub fn opt_item_name(self, def_id: DefId) -> Option { . // Look at the HIR first so the span will be correct if this is a local item. . self.item_name_from_hir(def_id) . .or_else(|| self.item_name_from_def_id(def_id).map(Ident::with_dummy_span)) . } . 738,460 ( 0.01%) pub fn opt_associated_item(self, def_id: DefId) -> Option<&'tcx AssocItem> { 295,384 ( 0.01%) if let DefKind::AssocConst | DefKind::AssocFn | DefKind::AssocTy = self.def_kind(def_id) { . Some(self.associated_item(def_id)) . } else { . None . } 664,614 ( 0.01%) } . 3,780 ( 0.00%) pub fn field_index(self, hir_id: hir::HirId, typeck_results: &TypeckResults<'_>) -> usize { . typeck_results.field_indices().get(hir_id).cloned().expect("no index for a field") 7,560 ( 0.00%) } . . pub fn find_field_index(self, ident: Ident, variant: &VariantDef) -> Option { . variant . .fields . .iter() . .position(|field| self.hygienic_eq(ident, field.ident(self), variant.def_id)) . } . . /// Returns `true` if the impls are the same polarity and the trait either . /// has no items or is annotated `#[marker]` and prevents item overrides. 1,720 ( 0.00%) pub fn impls_are_allowed_to_overlap( . self, . def_id1: DefId, . def_id2: DefId, . ) -> Option { . // If either trait impl references an error, they're allowed to overlap, . // as one of them essentially doesn't exist. . if self.impl_trait_ref(def_id1).map_or(false, |tr| tr.references_error()) 344 ( 0.00%) || self.impl_trait_ref(def_id2).map_or(false, |tr| tr.references_error()) . { . return Some(ImplOverlapKind::Permitted { marker: false }); . } . 1,720 ( 0.00%) match (self.impl_polarity(def_id1), self.impl_polarity(def_id2)) { . (ImplPolarity::Reservation, _) | (_, ImplPolarity::Reservation) => { . // `#[rustc_reservation_impl]` impls don't overlap with anything . debug!( . "impls_are_allowed_to_overlap({:?}, {:?}) = Some(Permitted) (reservations)", . def_id1, def_id2 . ); . return Some(ImplOverlapKind::Permitted { marker: false }); . } -- line 1997 ---------------------------------------- -- line 2004 ---------------------------------------- . ); . return None; . } . (ImplPolarity::Positive, ImplPolarity::Positive) . | (ImplPolarity::Negative, ImplPolarity::Negative) => {} . }; . . let is_marker_overlap = { 1,720 ( 0.00%) let is_marker_impl = |def_id: DefId| -> bool { 516 ( 0.00%) let trait_ref = self.impl_trait_ref(def_id); 516 ( 0.00%) trait_ref.map_or(false, |tr| self.trait_def(tr.def_id).is_marker) 1,376 ( 0.00%) }; 688 ( 0.00%) is_marker_impl(def_id1) && is_marker_impl(def_id2) . }; . . if is_marker_overlap { . debug!( . "impls_are_allowed_to_overlap({:?}, {:?}) = Some(Permitted) (marker overlap)", . def_id1, def_id2 . ); . Some(ImplOverlapKind::Permitted { marker: true }) . } else { 688 ( 0.00%) if let Some(self_ty1) = self.issue33140_self_ty(def_id1) { . if let Some(self_ty2) = self.issue33140_self_ty(def_id2) { . if self_ty1 == self_ty2 { . debug!( . "impls_are_allowed_to_overlap({:?}, {:?}) - issue #33140 HACK", . def_id1, def_id2 . ); . return Some(ImplOverlapKind::Issue33140); . } else { -- line 2034 ---------------------------------------- -- line 2038 ---------------------------------------- . ); . } . } . } . . debug!("impls_are_allowed_to_overlap({:?}, {:?}) = None", def_id1, def_id2); . None . } 1,376 ( 0.00%) } . . /// Returns `ty::VariantDef` if `res` refers to a struct, . /// or variant or their constructors, panics otherwise. 2,177 ( 0.00%) pub fn expect_variant_res(self, res: Res) -> &'tcx VariantDef { 3,732 ( 0.00%) match res { . Res::Def(DefKind::Variant, did) => { . let enum_did = self.parent(did).unwrap(); . self.adt_def(enum_did).variant_with_id(did) . } . Res::Def(DefKind::Struct | DefKind::Union, did) => self.adt_def(did).non_enum_variant(), . Res::Def(DefKind::Ctor(CtorOf::Variant, ..), variant_ctor_did) => { . let variant_did = self.parent(variant_ctor_did).unwrap(); . let enum_did = self.parent(variant_did).unwrap(); -- line 2059 ---------------------------------------- -- line 2060 ---------------------------------------- . self.adt_def(enum_did).variant_with_ctor_id(variant_ctor_did) . } . Res::Def(DefKind::Ctor(CtorOf::Struct, ..), ctor_did) => { . let struct_did = self.parent(ctor_did).expect("struct ctor has no parent"); . self.adt_def(struct_did).non_enum_variant() . } . _ => bug!("expect_variant_res used with unexpected res {:?}", res), . } 2,488 ( 0.00%) } . . /// Returns the possibly-auto-generated MIR of a `(DefId, Subst)` pair. . pub fn instance_mir(self, instance: ty::InstanceDef<'tcx>) -> &'tcx Body<'tcx> { . match instance { . ty::InstanceDef::Item(def) => match self.def_kind(def.did) { . DefKind::Const . | DefKind::Static . | DefKind::AssocConst -- line 2076 ---------------------------------------- -- line 2091 ---------------------------------------- . | ty::InstanceDef::Virtual(..) . | ty::InstanceDef::ClosureOnceShim { .. } . | ty::InstanceDef::DropGlue(..) . | ty::InstanceDef::CloneShim(..) => self.mir_shims(instance), . } . } . . /// Gets the attributes of a definition. 316,790 ( 0.01%) pub fn get_attrs(self, did: DefId) -> Attributes<'tcx> { 95,037 ( 0.00%) if let Some(did) = did.as_local() { 86,589 ( 0.00%) self.hir().attrs(self.hir().local_def_id_to_hir_id(did)) . } else { . self.item_attrs(did) . } 253,432 ( 0.00%) } . . /// Determines whether an item is annotated with an attribute. 38,156 ( 0.00%) pub fn has_attr(self, did: DefId, attr: Symbol) -> bool { 114,606 ( 0.00%) self.sess.contains_name(&self.get_attrs(did), attr) . } . . /// Determines whether an item is annotated with `doc(hidden)`. 378 ( 0.00%) pub fn is_doc_hidden(self, did: DefId) -> bool { 54 ( 0.00%) self.get_attrs(did) . .iter() 80 ( 0.00%) .filter_map(|attr| if attr.has_name(sym::doc) { attr.meta_item_list() } else { None }) . .any(|items| items.iter().any(|item| item.has_name(sym::hidden))) 432 ( 0.00%) } . . /// Returns `true` if this is an `auto trait`. 43,001 ( 0.00%) pub fn trait_is_auto(self, trait_def_id: DefId) -> bool { 6,143 ( 0.00%) self.trait_def(trait_def_id).has_auto_impl 49,144 ( 0.00%) } . . /// Returns layout of a generator. Layout might be unavailable if the . /// generator is tainted by errors. . pub fn generator_layout(self, def_id: DefId) -> Option<&'tcx GeneratorLayout<'tcx>> { . self.optimized_mir(def_id).generator_layout() . } . . /// Given the `DefId` of an impl, returns the `DefId` of the trait it implements. . /// If it implements no trait, returns `None`. 23,401 ( 0.00%) pub fn trait_id_of_impl(self, def_id: DefId) -> Option { . self.impl_trait_ref(def_id).map(|tr| tr.def_id) 30,087 ( 0.00%) } . . /// If the given defid describes a method belonging to an impl, returns the . /// `DefId` of the impl that the method belongs to; otherwise, returns `None`. 844 ( 0.00%) pub fn impl_of_method(self, def_id: DefId) -> Option { 3,376 ( 0.00%) self.opt_associated_item(def_id).and_then(|trait_item| match trait_item.container { . TraitContainer(_) => None, . ImplContainer(def_id) => Some(def_id), . }) 1,688 ( 0.00%) } . . /// Looks up the span of `impl_did` if the impl is local; otherwise returns `Err` . /// with the name of the crate containing the impl. . pub fn span_of_impl(self, impl_did: DefId) -> Result { . if let Some(impl_did) = impl_did.as_local() { . Ok(self.def_span(impl_did)) . } else { . Err(self.crate_name(impl_did.krate)) . } . } . . /// Hygienically compares a use-site name (`use_name`) for a field or an associated item with . /// its supposed definition name (`def_name`). The method also needs `DefId` of the supposed . /// definition's parent/scope to perform comparison. 47,712 ( 0.00%) pub fn hygienic_eq(self, use_name: Ident, def_name: Ident, def_parent_def_id: DefId) -> bool { . // We could use `Ident::eq` here, but we deliberately don't. The name . // comparison fails frequently, and we want to avoid the expensive . // `normalize_to_macros_2_0()` calls required for the span comparison whenever possible. 5,964 ( 0.00%) use_name.name == def_name.name 17,784 ( 0.00%) && use_name . .span . .ctxt() . .hygienic_eq(def_name.span.ctxt(), self.expn_that_defined(def_parent_def_id)) 47,712 ( 0.00%) } . 8,289 ( 0.00%) pub fn adjust_ident(self, mut ident: Ident, scope: DefId) -> Ident { 1,842 ( 0.00%) ident.span.normalize_to_macros_2_0_and_adjust(self.expn_that_defined(scope)); 1,842 ( 0.00%) ident 7,368 ( 0.00%) } . 48,294 ( 0.00%) pub fn adjust_ident_and_get_scope( . self, . mut ident: Ident, . scope: DefId, . block: hir::HirId, . ) -> (Ident, DefId) { 5,366 ( 0.00%) let scope = ident . .span . .normalize_to_macros_2_0_and_adjust(self.expn_that_defined(scope)) . .and_then(|actual_expansion| actual_expansion.expn_data().parent_module) 21,464 ( 0.00%) .unwrap_or_else(|| self.parent_module(block).to_def_id()); 32,196 ( 0.00%) (ident, scope) 48,294 ( 0.00%) } . 2,254 ( 0.00%) pub fn is_object_safe(self, key: DefId) -> bool { . self.object_safety_violations(key).is_empty() 2,576 ( 0.00%) } . } . . /// Yields the parent function's `LocalDefId` if `def_id` is an `impl Trait` definition. 7,527 ( 0.00%) pub fn is_impl_trait_defn(tcx: TyCtxt<'_>, def_id: DefId) -> Option { 7,527 ( 0.00%) let def_id = def_id.as_local()?; 8,888 ( 0.00%) if let Node::Item(item) = tcx.hir().get_by_def_id(def_id) { 2,292 ( 0.00%) if let hir::ItemKind::OpaqueTy(ref opaque_ty) = item.kind { . return match opaque_ty.origin { . hir::OpaqueTyOrigin::FnReturn(parent) | hir::OpaqueTyOrigin::AsyncFn(parent) => { . Some(parent) . } . hir::OpaqueTyOrigin::TyAlias => None, . }; . } . } . None 10,036 ( 0.00%) } . . pub fn int_ty(ity: ast::IntTy) -> IntTy { . match ity { . ast::IntTy::Isize => IntTy::Isize, . ast::IntTy::I8 => IntTy::I8, . ast::IntTy::I16 => IntTy::I16, . ast::IntTy::I32 => IntTy::I32, . ast::IntTy::I64 => IntTy::I64, -- line 2216 ---------------------------------------- -- line 2224 ---------------------------------------- . ast::UintTy::U8 => UintTy::U8, . ast::UintTy::U16 => UintTy::U16, . ast::UintTy::U32 => UintTy::U32, . ast::UintTy::U64 => UintTy::U64, . ast::UintTy::U128 => UintTy::U128, . } . } . 180 ( 0.00%) pub fn float_ty(fty: ast::FloatTy) -> FloatTy { . match fty { . ast::FloatTy::F32 => FloatTy::F32, . ast::FloatTy::F64 => FloatTy::F64, . } 180 ( 0.00%) } . 650 ( 0.00%) pub fn ast_int_ty(ity: IntTy) -> ast::IntTy { . match ity { . IntTy::Isize => ast::IntTy::Isize, . IntTy::I8 => ast::IntTy::I8, . IntTy::I16 => ast::IntTy::I16, . IntTy::I32 => ast::IntTy::I32, . IntTy::I64 => ast::IntTy::I64, . IntTy::I128 => ast::IntTy::I128, . } 650 ( 0.00%) } . . pub fn ast_uint_ty(uty: UintTy) -> ast::UintTy { . match uty { . UintTy::Usize => ast::UintTy::Usize, . UintTy::U8 => ast::UintTy::U8, . UintTy::U16 => ast::UintTy::U16, . UintTy::U32 => ast::UintTy::U32, . UintTy::U64 => ast::UintTy::U64, -- line 2256 ---------------------------------------- -- line 2262 ---------------------------------------- . closure::provide(providers); . context::provide(providers); . erase_regions::provide(providers); . layout::provide(providers); . util::provide(providers); . print::provide(providers); . super::util::bug::provide(providers); . super::middle::provide(providers); 8 ( 0.00%) *providers = ty::query::Providers { . trait_impls_of: trait_def::trait_impls_of_provider, . type_uninhabited_from: inhabitedness::type_uninhabited_from, . const_param_default: consts::const_param_default, . vtable_allocation: vtable::vtable_allocation_provider, . ..*providers . }; 1 ( 0.00%) } . . /// A map for the local crate mapping each type to a vector of its . /// inherent impls. This is not meant to be used outside of coherence; . /// rather, you should request the vector for a specific type via . /// `tcx.inherent_impls(def_id)` so as to minimize your dependencies . /// (constructing this map requires touching the entire crate). . #[derive(Clone, Debug, Default, HashStable)] . pub struct CrateInherentImpls { -- line 2285 ---------------------------------------- -- line 2288 ---------------------------------------- . . #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, TyEncodable, HashStable)] . pub struct SymbolName<'tcx> { . /// `&str` gives a consistent ordering, which ensures reproducible builds. . pub name: &'tcx str, . } . . impl<'tcx> SymbolName<'tcx> { 6 ( 0.00%) pub fn new(tcx: TyCtxt<'tcx>, name: &str) -> SymbolName<'tcx> { . SymbolName { . name: unsafe { str::from_utf8_unchecked(tcx.arena.alloc_slice(name.as_bytes())) }, . } 8 ( 0.00%) } . } . . impl<'tcx> fmt::Display for SymbolName<'tcx> { . fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result { . fmt::Display::fmt(&self.name, fmt) . } . } . -- line 2308 ---------------------------------------- 26,639,332 ( 0.46%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/alloc/src/vec/into_iter.rs -------------------------------------------------------------------------------- Ir -- line 51 ---------------------------------------- . /// let vec = vec!['a', 'b', 'c']; . /// let mut into_iter = vec.into_iter(); . /// assert_eq!(into_iter.as_slice(), &['a', 'b', 'c']); . /// let _ = into_iter.next().unwrap(); . /// assert_eq!(into_iter.as_slice(), &['b', 'c']); . /// ``` . #[stable(feature = "vec_into_iter_as_slice", since = "1.15.0")] . pub fn as_slice(&self) -> &[T] { 56,086 ( 0.00%) unsafe { slice::from_raw_parts(self.ptr, self.len()) } . } . . /// Returns the remaining items of this iterator as a mutable slice. . /// . /// # Examples . /// . /// ``` . /// let vec = vec!['a', 'b', 'c']; -- line 67 ---------------------------------------- -- line 79 ---------------------------------------- . . /// Returns a reference to the underlying allocator. . #[unstable(feature = "allocator_api", issue = "32838")] . #[inline] . pub fn allocator(&self) -> &A { . &self.alloc . } . 448 ( 0.00%) fn as_raw_mut_slice(&mut self) -> *mut [T] { 1,562,423 ( 0.03%) ptr::slice_from_raw_parts_mut(self.ptr as *mut T, self.len()) 448 ( 0.00%) } . . /// Drops remaining elements and relinquishes the backing allocation. . /// . /// This is roughly equivalent to the following, but more efficient . /// . /// ``` . /// # let mut into_iter = Vec::::with_capacity(10).into_iter(); . /// (&mut into_iter).for_each(core::mem::drop); -- line 97 ---------------------------------------- -- line 99 ---------------------------------------- . /// ``` . #[cfg(not(no_global_oom_handling))] . pub(super) fn forget_allocation_drop_remaining(&mut self) { . let remaining = self.as_raw_mut_slice(); . . // overwrite the individual fields instead of creating a new . // struct and then overwriting &mut self. . // this creates less assembly 2,421 ( 0.00%) self.cap = 0; 4,842 ( 0.00%) self.buf = unsafe { NonNull::new_unchecked(RawVec::NEW.ptr()) }; 2,628 ( 0.00%) self.ptr = self.buf.as_ptr(); 3,371 ( 0.00%) self.end = self.buf.as_ptr(); . . unsafe { . ptr::drop_in_place(remaining); . } . } . } . . #[stable(feature = "vec_intoiter_as_ref", since = "1.46.0")] -- line 118 ---------------------------------------- -- line 127 ---------------------------------------- . #[stable(feature = "rust1", since = "1.0.0")] . unsafe impl Sync for IntoIter {} . . #[stable(feature = "rust1", since = "1.0.0")] . impl Iterator for IntoIter { . type Item = T; . . #[inline] 2,891 ( 0.00%) fn next(&mut self) -> Option { 4,302,520 ( 0.07%) if self.ptr as *const _ == self.end { 281,193 ( 0.00%) None 1,528 ( 0.00%) } else if mem::size_of::() == 0 { . // purposefully don't use 'ptr.offset' because for . // vectors with 0-size elements this would return the . // same pointer. . self.ptr = unsafe { arith_offset(self.ptr as *const i8, 1) as *mut T }; . . // Make up a value of this ZST. . Some(unsafe { mem::zeroed() }) . } else { 1,065 ( 0.00%) let old = self.ptr; 523,827 ( 0.01%) self.ptr = unsafe { self.ptr.offset(1) }; . 165,304 ( 0.00%) Some(unsafe { ptr::read(old) }) . } 1,160 ( 0.00%) } . . #[inline] 1,390 ( 0.00%) fn size_hint(&self) -> (usize, Option) { 834 ( 0.00%) let exact = if mem::size_of::() == 0 { . (self.end as usize).wrapping_sub(self.ptr as usize) . } else { 1,390 ( 0.00%) unsafe { self.end.offset_from(self.ptr) as usize } . }; 2,505 ( 0.00%) (exact, Some(exact)) 556 ( 0.00%) } . . #[inline] . fn advance_by(&mut self, n: usize) -> Result<(), usize> { . let step_size = self.len().min(n); . let to_drop = ptr::slice_from_raw_parts_mut(self.ptr as *mut T, step_size); . if mem::size_of::() == 0 { . // SAFETY: due to unchecked casts of unsigned amounts to signed offsets the wraparound . // effectively results in unsigned pointers representing positions 0..usize::MAX, -- line 170 ---------------------------------------- -- line 181 ---------------------------------------- . if step_size < n { . return Err(step_size); . } . Ok(()) . } . . #[inline] . fn count(self) -> usize { 2 ( 0.00%) self.len() . } . . #[doc(hidden)] . unsafe fn __iterator_get_unchecked(&mut self, i: usize) -> Self::Item . where . Self: TrustedRandomAccessNoCoerce, . { . // SAFETY: the caller must guarantee that `i` is in bounds of the -- line 197 ---------------------------------------- -- line 207 ---------------------------------------- . } . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl DoubleEndedIterator for IntoIter { . #[inline] . fn next_back(&mut self) -> Option { 185,553 ( 0.00%) if self.end == self.ptr { . None . } else if mem::size_of::() == 0 { . // See above for why 'ptr.offset' isn't used . self.end = unsafe { arith_offset(self.end as *const i8, -1) as *mut T }; . . // Make up a value of this ZST. . Some(unsafe { mem::zeroed() }) . } else { 57,438 ( 0.00%) self.end = unsafe { self.end.offset(-1) }; . 1,804 ( 0.00%) Some(unsafe { ptr::read(self.end) }) . } . } . . #[inline] . fn advance_back_by(&mut self, n: usize) -> Result<(), usize> { . let step_size = self.len().min(n); . if mem::size_of::() == 0 { . // SAFETY: same as for advance_by() -- line 234 ---------------------------------------- -- line 295 ---------------------------------------- . #[cfg(test)] . fn clone(&self) -> Self { . crate::slice::to_vec(self.as_slice(), self.alloc.clone()).into_iter() . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . unsafe impl<#[may_dangle] T, A: Allocator> Drop for IntoIter { 4,872,045 ( 0.08%) fn drop(&mut self) { . struct DropGuard<'a, T, A: Allocator>(&'a mut IntoIter); . . impl Drop for DropGuard<'_, T, A> { 672 ( 0.00%) fn drop(&mut self) { . unsafe { . // `IntoIter::alloc` is not used anymore after this 896 ( 0.00%) let alloc = ptr::read(&self.0.alloc); . // RawVec handles deallocation 1,094,268 ( 0.02%) let _ = RawVec::from_raw_parts_in(self.0.buf.as_ptr(), self.0.cap, alloc); 224 ( 0.00%) } 448 ( 0.00%) } . } . 224 ( 0.00%) let guard = DropGuard(self); . // destroy the remaining elements . unsafe { 2,115 ( 0.00%) ptr::drop_in_place(guard.0.as_raw_mut_slice()); . } . // now `guard` will be dropped and do the rest 4,079,412 ( 0.07%) } . } . . #[unstable(issue = "none", feature = "inplace_iteration")] . #[doc(hidden)] . unsafe impl InPlaceIterable for IntoIter {} . . #[unstable(issue = "none", feature = "inplace_iteration")] . #[doc(hidden)] -- line 331 ---------------------------------------- 2,017,136 ( 0.03%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_span/src/caching_source_map_view.rs -------------------------------------------------------------------------------- Ir -- line 27 ---------------------------------------- . impl CacheEntry { . #[inline] . fn update( . &mut self, . new_file_and_idx: Option<(Lrc, usize)>, . pos: BytePos, . time_stamp: usize, . ) { 29,703 ( 0.00%) if let Some((file, file_idx)) = new_file_and_idx { 10,945 ( 0.00%) self.file = file; 15,332 ( 0.00%) self.file_index = file_idx; . } . 16,478 ( 0.00%) let line_index = self.file.lookup_line(pos).unwrap(); . let line_bounds = self.file.line_bounds(line_index); 50,474 ( 0.00%) self.line_number = line_index + 1; 74,571 ( 0.00%) self.line = line_bounds; . self.touch(time_stamp); . } . . #[inline] . fn touch(&mut self, time_stamp: usize) { 379,839 ( 0.01%) self.time_stamp = time_stamp; . } . } . . #[derive(Clone)] . pub struct CachingSourceMapView<'sm> { . source_map: &'sm SourceMap, . line_cache: [CacheEntry; 3], . time_stamp: usize, . } . . impl<'sm> CachingSourceMapView<'sm> { 8,204 ( 0.00%) pub fn new(source_map: &'sm SourceMap) -> CachingSourceMapView<'sm> { . let files = source_map.files(); 4,102 ( 0.00%) let first_file = files[0].clone(); . let entry = CacheEntry { . time_stamp: 0, . line_number: 0, . line: BytePos(0)..BytePos(0), . file: first_file, . file_index: 0, . }; . 20,510 ( 0.00%) CachingSourceMapView { . source_map, 28,714 ( 0.00%) line_cache: [entry.clone(), entry.clone(), entry], . time_stamp: 0, . } 16,408 ( 0.00%) } . . pub fn byte_pos_to_line_and_col( . &mut self, . pos: BytePos, . ) -> Option<(Lrc, usize, BytePos)> { . self.time_stamp += 1; . . // Check if the position is in one of the cached lines -- line 85 ---------------------------------------- -- line 106 ---------------------------------------- . }; . . let cache_entry = &mut self.line_cache[oldest]; . cache_entry.update(new_file_and_idx, pos, self.time_stamp); . . Some((cache_entry.file.clone(), cache_entry.line_number, pos - cache_entry.line.start)) . } . 1,410,115 ( 0.02%) pub fn span_data_to_lines_and_cols( . &mut self, . span_data: &SpanData, . ) -> Option<(Lrc, usize, BytePos, usize, BytePos)> { 805,780 ( 0.01%) self.time_stamp += 1; . . // Check if lo and hi are in the cached lines. 201,445 ( 0.00%) let lo_cache_idx = self.cache_entry_index(span_data.lo); 201,445 ( 0.00%) let hi_cache_idx = self.cache_entry_index(span_data.hi); . 361,638 ( 0.01%) if lo_cache_idx != -1 && hi_cache_idx != -1 { . // Cache hit for span lo and hi. Check if they belong to the same file. . let result = { 356,788 ( 0.01%) let lo = &self.line_cache[lo_cache_idx as usize]; . let hi = &self.line_cache[hi_cache_idx as usize]; . 1,070,364 ( 0.02%) if lo.file_index != hi.file_index { . return None; . } . . ( 356,788 ( 0.01%) lo.file.clone(), . lo.line_number, . span_data.lo - lo.line.start, 178,394 ( 0.00%) hi.line_number, . span_data.hi - hi.line.start, . ) . }; . 178,394 ( 0.00%) self.line_cache[lo_cache_idx as usize].touch(self.time_stamp); 178,394 ( 0.00%) self.line_cache[hi_cache_idx as usize].touch(self.time_stamp); . 713,576 ( 0.01%) return Some(result); . } . . // No cache hit or cache hit for only one of span lo and hi. 41,252 ( 0.00%) let oldest = if lo_cache_idx != -1 || hi_cache_idx != -1 { . let avoid_idx = if lo_cache_idx != -1 { lo_cache_idx } else { hi_cache_idx }; . self.oldest_cache_entry_index_avoid(avoid_idx as usize) . } else { . self.oldest_cache_entry_index() . }; . . // If the entry doesn't point to the correct file, get the new file and index. . // Return early if the file containing beginning of span doesn't contain end of span. 184,316 ( 0.00%) let new_file_and_idx = if !file_contains(&self.line_cache[oldest].file, span_data.lo) { 32,865 ( 0.00%) let new_file_and_idx = self.file_for_position(span_data.lo)?; 39,438 ( 0.00%) if !file_contains(&new_file_and_idx.0, span_data.hi) { . return None; . } . 26,292 ( 0.00%) Some(new_file_and_idx) . } else { . let file = &self.line_cache[oldest].file; 49,434 ( 0.00%) if !file_contains(&file, span_data.hi) { . return None; . } . 49,434 ( 0.00%) None . }; . . // Update the cache entries. 115,255 ( 0.00%) let (lo_idx, hi_idx) = match (lo_cache_idx, hi_cache_idx) { . // Oldest cache entry is for span_data.lo line. . (-1, -1) => { . let lo = &mut self.line_cache[oldest]; . lo.update(new_file_and_idx, span_data.lo, self.time_stamp); . 51,900 ( 0.00%) if !lo.line.contains(&span_data.hi) { . let new_file_and_idx = Some((lo.file.clone(), lo.file_index)); . let next_oldest = self.oldest_cache_entry_index_avoid(oldest); . let hi = &mut self.line_cache[next_oldest]; . hi.update(new_file_and_idx, span_data.hi, self.time_stamp); . (oldest, next_oldest) . } else { . (oldest, oldest) . } . } . // Oldest cache entry is for span_data.lo line. . (-1, _) => { . let lo = &mut self.line_cache[oldest]; . lo.update(new_file_and_idx, span_data.lo, self.time_stamp); 4,850 ( 0.00%) let hi = &mut self.line_cache[hi_cache_idx as usize]; 7,275 ( 0.00%) hi.touch(self.time_stamp); . (oldest, hi_cache_idx as usize) . } . // Oldest cache entry is for span_data.hi line. . (_, -1) => { . let hi = &mut self.line_cache[oldest]; 3,326 ( 0.00%) hi.update(new_file_and_idx, span_data.hi, self.time_stamp); 6,652 ( 0.00%) let lo = &mut self.line_cache[lo_cache_idx as usize]; 13,304 ( 0.00%) lo.touch(self.time_stamp); . (lo_cache_idx as usize, oldest) . } . _ => { . panic!(); . } . }; . . let lo = &self.line_cache[lo_idx]; . let hi = &self.line_cache[hi_idx]; . . // Span lo and hi may equal line end when last line doesn't . // end in newline, hence the inclusive upper bounds below. 46,102 ( 0.00%) assert!(span_data.lo >= lo.line.start); 23,051 ( 0.00%) assert!(span_data.lo <= lo.line.end); 46,102 ( 0.00%) assert!(span_data.hi >= hi.line.start); 23,051 ( 0.00%) assert!(span_data.hi <= hi.line.end); 115,255 ( 0.00%) assert!(lo.file.contains(span_data.lo)); 69,153 ( 0.00%) assert!(lo.file.contains(span_data.hi)); 69,153 ( 0.00%) assert_eq!(lo.file_index, hi.file_index); . 69,153 ( 0.00%) Some(( 23,051 ( 0.00%) lo.file.clone(), . lo.line_number, . span_data.lo - lo.line.start, 23,051 ( 0.00%) hi.line_number, . span_data.hi - hi.line.start, . )) 1,813,005 ( 0.03%) } . . fn cache_entry_index(&self, pos: BytePos) -> isize { . for (idx, cache_entry) in self.line_cache.iter().enumerate() { 2,015,785 ( 0.03%) if cache_entry.line.contains(&pos) { . return idx as isize; . } . } . . -1 . } . . fn oldest_cache_entry_index(&self) -> usize { . let mut oldest = 0; . . for idx in 1..self.line_cache.len() { 103,800 ( 0.00%) if self.line_cache[idx].time_stamp < self.line_cache[oldest].time_stamp { . oldest = idx; . } . } . . oldest . } . . fn oldest_cache_entry_index_avoid(&self, avoid_idx: usize) -> usize { . let mut oldest = if avoid_idx != 0 { 0 } else { 1 }; . . for idx in 0..self.line_cache.len() { 45,753 ( 0.00%) if idx != avoid_idx 21,423 ( 0.00%) && self.line_cache[idx].time_stamp < self.line_cache[oldest].time_stamp . { . oldest = idx; . } . } . . oldest . } . 32,865 ( 0.00%) fn file_for_position(&self, pos: BytePos) -> Option<(Lrc, usize)> { 6,573 ( 0.00%) if !self.source_map.files().is_empty() { 13,146 ( 0.00%) let file_idx = self.source_map.lookup_source_file_idx(pos); . let file = &self.source_map.files()[file_idx]; . 52,584 ( 0.00%) if file_contains(file, pos) { . return Some((file.clone(), file_idx)); . } . } . . None 32,865 ( 0.00%) } . } . . #[inline] . fn file_contains(file: &SourceFile, pos: BytePos) -> bool { . // `SourceMap::lookup_source_file_idx` and `SourceFile::contains` both consider the position . // one past the end of a file to belong to it. Normally, that's what we want. But for the . // purposes of converting a byte position to a line and column number, we can't come up with a . // line and column number if the file is empty, because an empty file doesn't contain any -- line 290 ---------------------------------------- 2,507,242 ( 0.04%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.12.0/src/raw/mod.rs -------------------------------------------------------------------------------- Ir -- line 110 ---------------------------------------- . /// Control byte value for an empty bucket. . 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] 27 ( 0.00%) fn is_full(ctrl: u8) -> bool { 4,632,193 ( 0.08%) ctrl & 0x80 == 0 36 ( 0.00%) } . . /// 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] 18 ( 0.00%) fn special_is_empty(ctrl: u8) -> bool { . debug_assert!(is_special(ctrl)); 330,026 ( 0.01%) ctrl & 0x01 != 0 24 ( 0.00%) } . . /// Primary hash function, used to select the initial bucket to probe from. . #[inline] . #[allow(clippy::cast_possible_truncation)] 36 ( 0.00%) fn h1(hash: u64) -> usize { . // On 32-bit platforms we simply ignore the higher hash bits. . hash as usize 24 ( 0.00%) } . . /// Secondary hash function, saved in the low 7 bits of the control byte. . #[inline] . #[allow(clippy::cast_possible_truncation)] 27 ( 0.00%) 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. 54 ( 0.00%) let hash_len = usize::min(mem::size_of::(), mem::size_of::()); 114,536,777 ( 1.98%) let top7 = hash >> (hash_len * 8 - 7); 9 ( 0.00%) (top7 & 0x7f) as u8 // truncation 18 ( 0.00%) } . . /// 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 . /// (skipping over 1 group), then 3 groups (skipping over 2 groups), and so on. . /// -- line 161 ---------------------------------------- -- 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" . ); . 559,244 ( 0.01%) self.stride += Group::WIDTH; 559,244 ( 0.01%) self.pos += self.stride; 476,337 ( 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)] 9 ( 0.00%) 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. 438,018 ( 0.01%) 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. 908,173 ( 0.02%) 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. 224,250 ( 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()) 12 ( 0.00%) } . . /// Returns the maximum effective capacity for the given bucket mask, taking . /// the maximum load factor into account. . #[inline] 18 ( 0.00%) fn bucket_mask_to_capacity(bucket_mask: usize) -> usize { 1,183,878 ( 0.02%) 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. 6 ( 0.00%) bucket_mask . } else { . // For larger tables we reserve 12.5% of the slots as empty. 247,128 ( 0.00%) ((bucket_mask + 1) / 8) * 7 . } 18 ( 0.00%) } . . /// 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, . ctrl_align: usize, . } . . impl TableLayout { . #[inline] 6 ( 0.00%) fn new() -> Self { 18 ( 0.00%) let layout = Layout::new::(); 12 ( 0.00%) Self { 18 ( 0.00%) size: layout.size(), 36 ( 0.00%) ctrl_align: usize::max(layout.align(), Group::WIDTH), . } 24 ( 0.00%) } . . #[inline] 78 ( 0.00%) fn calculate_layout_for(self, buckets: usize) -> Option<(Layout, usize)> { . debug_assert!(buckets.is_power_of_two()); . 12 ( 0.00%) let TableLayout { size, ctrl_align } = self; . // Manual layout calculation since Layout methods are not yet stable. . let ctrl_offset = 817,909 ( 0.01%) size.checked_mul(buckets)?.checked_add(ctrl_align - 1)? & !(ctrl_align - 1); 1,153,312 ( 0.02%) let len = ctrl_offset.checked_add(buckets + Group::WIDTH)?; . 54 ( 0.00%) Some(( 24 ( 0.00%) unsafe { Layout::from_size_align_unchecked(len, ctrl_align) }, . ctrl_offset, . )) 18 ( 0.00%) } . } . . /// Returns a Layout which describes the allocation required for a hash table, . /// and the offset of the control bytes in the allocation. . /// (the offset is also one past last element of buckets) . /// . /// Returns `None` if an overflow occurs. . #[cfg_attr(feature = "inline-more", inline)] -- line 269 ---------------------------------------- -- line 292 ---------------------------------------- . #[inline] . fn clone(&self) -> Self { . Self { ptr: self.ptr } . } . } . . impl Bucket { . #[inline] 50 ( 0.00%) unsafe fn from_base_index(base: NonNull, index: usize) -> Self { 40 ( 0.00%) let ptr = if mem::size_of::() == 0 { . // won't overflow because index must be less than length . (index + 1) as *mut T . } else { 40 ( 0.00%) base.as_ptr().sub(index) . }; 10 ( 0.00%) Self { 40 ( 0.00%) ptr: NonNull::new_unchecked(ptr), . } 30 ( 0.00%) } . #[inline] . unsafe fn to_base_index(&self, base: NonNull) -> usize { . if mem::size_of::() == 0 { . self.ptr.as_ptr() as usize - 1 . } else { . offset_from(base.as_ptr(), self.ptr.as_ptr()) . } . } . #[inline] 30 ( 0.00%) pub fn as_ptr(&self) -> *mut T { 40 ( 0.00%) if mem::size_of::() == 0 { . // Just return an arbitrary ZST pointer which is properly aligned . mem::align_of::() as *mut T . } else { 60 ( 0.00%) unsafe { self.ptr.as_ptr().sub(1) } . } 30 ( 0.00%) } . #[inline] 15 ( 0.00%) unsafe fn next_n(&self, offset: usize) -> Self { 12 ( 0.00%) let ptr = if mem::size_of::() == 0 { . (self.ptr.as_ptr() as usize + offset) as *mut T . } else { 15 ( 0.00%) self.ptr.as_ptr().sub(offset) . }; 3 ( 0.00%) Self { 12 ( 0.00%) ptr: NonNull::new_unchecked(ptr), . } 9 ( 0.00%) } . #[cfg_attr(feature = "inline-more", inline)] 6 ( 0.00%) pub unsafe fn drop(&self) { 6 ( 0.00%) self.as_ptr().drop_in_place(); 6 ( 0.00%) } . #[inline] . pub unsafe fn read(&self) -> T { 2,274 ( 0.00%) self.as_ptr().read() . } . #[inline] 9 ( 0.00%) pub unsafe fn write(&self, val: T) { 36 ( 0.00%) self.as_ptr().write(val); 6 ( 0.00%) } . #[inline] 8 ( 0.00%) pub unsafe fn as_ref<'a>(&self) -> &'a T { 8 ( 0.00%) &*self.as_ptr() 8 ( 0.00%) } . #[inline] . pub unsafe fn as_mut<'a>(&self) -> &'a mut T { . &mut *self.as_ptr() . } . #[cfg(feature = "raw")] . #[inline] . pub unsafe fn copy_from_nonoverlapping(&self, other: &Self) { . self.as_ptr().copy_from_nonoverlapping(other.as_ptr(), 1); -- line 362 ---------------------------------------- -- line 392 ---------------------------------------- . . impl RawTable { . /// Creates a new empty hash table without allocating any memory. . /// . /// 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] 6 ( 0.00%) pub const fn new() -> Self { 16 ( 0.00%) Self { 4 ( 0.00%) table: RawTableInner::new_in(Global), . marker: PhantomData, . } 4 ( 0.00%) } . . /// Attempts to allocate a new hash table with at least enough capacity . /// for inserting the given number of elements without reallocating. . #[cfg(feature = "raw")] . pub fn try_with_capacity(capacity: usize) -> Result { . Self::try_with_capacity_in(capacity, Global) . } . -- line 413 ---------------------------------------- -- line 421 ---------------------------------------- . impl RawTable { . /// 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] 6 ( 0.00%) pub fn new_in(alloc: A) -> Self { 3,895 ( 0.00%) Self { 4 ( 0.00%) table: RawTableInner::new_in(alloc), . marker: PhantomData, . } 4 ( 0.00%) } . . /// Allocates a new hash table with the given number of buckets. . /// . /// The control bytes are left uninitialized. . #[cfg_attr(feature = "inline-more", inline)] . unsafe fn new_uninitialized( . alloc: A, . buckets: usize, . fallibility: Fallibility, . ) -> Result { . debug_assert!(buckets.is_power_of_two()); . . Ok(Self { 445 ( 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 { 18,853 ( 0.00%) table: RawTableInner::fallible_with_capacity( . alloc, . TableLayout::new::(), . capacity, . fallibility, . )?, . marker: PhantomData, . }) . } -- line 474 ---------------------------------------- -- line 493 ---------------------------------------- . /// Returns a reference to the underlying allocator. . #[inline] . pub fn allocator(&self) -> &A { . &self.table.alloc . } . . /// Deallocates the table without dropping any entries. . #[cfg_attr(feature = "inline-more", inline)] 9 ( 0.00%) unsafe fn free_buckets(&mut self) { 12 ( 0.00%) self.table.free_buckets(TableLayout::new::()); 6 ( 0.00%) } . . /// Returns pointer to one past last element of data table. . #[inline] 20 ( 0.00%) pub unsafe fn data_end(&self) -> NonNull { 50 ( 0.00%) NonNull::new_unchecked(self.table.ctrl.as_ptr().cast()) 20 ( 0.00%) } . . /// Returns pointer to start of data table. . #[inline] . #[cfg(feature = "nightly")] . pub unsafe fn data_start(&self) -> *mut T { . self.data_end().as_ptr().wrapping_sub(self.buckets()) . } . -- line 517 ---------------------------------------- -- line 518 ---------------------------------------- . /// Returns the index of a bucket from a `Bucket`. . #[inline] . pub unsafe fn bucket_index(&self, bucket: &Bucket) -> usize { . bucket.to_base_index(self.data_end()) . } . . /// Returns a pointer to an element in the table. . #[inline] 28 ( 0.00%) pub unsafe fn bucket(&self, index: usize) -> Bucket { . debug_assert_ne!(self.table.bucket_mask, 0); . debug_assert!(index < self.buckets()); 28 ( 0.00%) Bucket::from_base_index(self.data_end(), index) 14 ( 0.00%) } . . /// 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")] 91,461 ( 0.00%) pub unsafe fn erase_no_drop(&mut self, item: &Bucket) { 91,461 ( 0.00%) let index = self.bucket_index(item); . self.table.erase(index); 182,922 ( 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. 42,432 ( 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 { 140,490 ( 0.00%) self.erase_no_drop(&item); 459 ( 0.00%) item.read() . } . . /// Finds and removes an element from the table, returning it. . #[cfg_attr(feature = "inline-more", inline)] 1,852,422 ( 0.03%) pub fn remove_entry(&mut self, hash: u64, eq: impl FnMut(&T) -> bool) -> Option { . // Avoid `Option::map` because it bloats LLVM IR. 5,516 ( 0.00%) match self.find(hash, eq) { 18,981 ( 0.00%) Some(bucket) => Some(unsafe { self.remove(bucket) }), 324,578 ( 0.01%) None => None, . } 2,346,959 ( 0.04%) } . . /// 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(); . } . } . 16 ( 0.00%) unsafe fn drop_elements(&mut self) { 59,270 ( 0.00%) if mem::needs_drop::() && !self.is_empty() { 90 ( 0.00%) for item in self.iter() { 6 ( 0.00%) item.drop(); . } . } 14 ( 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 641 ---------------------------------------- . } . } . } . } . . /// Ensures that at least `additional` items can be inserted into the table . /// without reallocation. . #[cfg_attr(feature = "inline-more", inline)] 35 ( 0.00%) pub fn reserve(&mut self, additional: usize, hasher: impl Fn(&T) -> u64) { 1,002,399 ( 0.02%) if additional > self.table.growth_left { . // Avoid `Result::unwrap_or_else` because it bloats LLVM IR. 753,858 ( 0.01%) if self 6 ( 0.00%) .reserve_rehash(additional, hasher, Fallibility::Infallible) . .is_err() . { . unsafe { hint::unreachable_unchecked() } . } . } 25 ( 0.00%) } . . /// Tries to ensure that at least `additional` items can be inserted into . /// the table without reallocation. . #[cfg_attr(feature = "inline-more", inline)] . pub fn try_reserve( . &mut self, . additional: usize, . hasher: impl Fn(&T) -> u64, -- line 667 ---------------------------------------- -- line 671 ---------------------------------------- . } else { . Ok(()) . } . } . . /// Out-of-line slow path for `reserve` and `try_reserve`. . #[cold] . #[inline(never)] 1,760,189 ( 0.03%) fn reserve_rehash( . &mut self, . additional: usize, . hasher: impl Fn(&T) -> u64, . fallibility: Fallibility, . ) -> Result<(), TryReserveError> { . unsafe { 36 ( 0.00%) self.table.reserve_rehash_inner( . additional, 9 ( 0.00%) &|table, index| hasher(table.bucket::(index).as_ref()), . fallibility, 12 ( 0.00%) TableLayout::new::(), 15 ( 0.00%) if mem::needs_drop::() { 15 ( 0.00%) Some(mem::transmute(ptr::drop_in_place:: as unsafe fn(*mut T))) . } else { . None . }, . ) . } 1,234,025 ( 0.02%) } . . /// 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)] 6,757,848 ( 0.12%) pub fn insert(&mut self, hash: u64, value: T, hasher: impl Fn(&T) -> u64) -> Bucket { . unsafe { 21 ( 0.00%) 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. 17,134 ( 0.00%) let old_ctrl = *self.table.ctrl(index); 4,482,328 ( 0.08%) if unlikely(self.table.growth_left == 0 && special_is_empty(old_ctrl)) { 12 ( 0.00%) self.reserve(1, hasher); 12 ( 0.00%) index = self.table.find_insert_slot(hash); . } . 12 ( 0.00%) self.table.record_item_insert_at(index, old_ctrl, hash); . 15 ( 0.00%) let bucket = self.bucket(index); 35 ( 0.00%) bucket.write(value); 6 ( 0.00%) bucket . } 5,015,104 ( 0.09%) } . . /// 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)] 1,670,888 ( 0.03%) pub fn insert_entry(&mut self, hash: u64, value: T, hasher: impl Fn(&T) -> u64) -> &mut T { 556 ( 0.00%) unsafe { self.insert(hash, value, hasher).as_mut() } 1,253,166 ( 0.02%) } . . /// 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"))] 12,814 ( 0.00%) pub unsafe fn insert_no_grow(&mut self, hash: u64, value: T) -> Bucket { 865,551 ( 0.01%) let (index, old_ctrl) = self.table.prepare_insert_slot(hash); 31,416 ( 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. 1,926,635 ( 0.03%) self.table.growth_left -= special_is_empty(old_ctrl) as usize; . . bucket.write(value); 1,509,161 ( 0.03%) self.table.items += 1; . bucket 25,327 ( 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] 8,364 ( 0.00%) pub fn find(&self, hash: u64, mut eq: impl FnMut(&T) -> bool) -> Option> { 10,930 ( 0.00%) let result = self.table.find_inner(hash, &mut |index| unsafe { 69,104 ( 0.00%) eq(self.bucket(index).as_ref()) 2,199 ( 0.00%) }); . . // Avoid `Option::map` because it bloats LLVM IR. 22 ( 0.00%) match result { 1,235 ( 0.00%) Some(index) => Some(unsafe { self.bucket(index) }), 8 ( 0.00%) None => None, . } 8,352 ( 0.00%) } . . /// Gets a reference to an element in the table. . #[inline] 12 ( 0.00%) pub fn get(&self, hash: u64, eq: impl FnMut(&T) -> bool) -> Option<&T> { . // Avoid `Option::map` because it bloats LLVM IR. 85,448 ( 0.00%) match self.find(hash, eq) { 12 ( 0.00%) Some(bucket) => Some(unsafe { bucket.as_ref() }), 2 ( 0.00%) None => None, . } 9 ( 0.00%) } . . /// Gets a mutable reference to an element in the table. . #[inline] 12 ( 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. 11,309 ( 0.00%) match self.find(hash, eq) { . Some(bucket) => Some(unsafe { bucket.as_mut() }), 6 ( 0.00%) None => None, . } 9 ( 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 913 ---------------------------------------- . /// more, but is guaranteed to be able to hold at least this many. . #[inline] . pub fn capacity(&self) -> usize { . self.table.items + self.table.growth_left . } . . /// Returns the number of elements in the table. . #[inline] 18 ( 0.00%) pub fn len(&self) -> usize { 9 ( 0.00%) self.table.items 18 ( 0.00%) } . . /// Returns `true` if the table contains no elements. . #[inline] 14 ( 0.00%) pub fn is_empty(&self) -> bool { 1,933,245 ( 0.03%) self.len() == 0 28 ( 0.00%) } . . /// 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] 21 ( 0.00%) pub unsafe fn iter(&self) -> RawIter { 21 ( 0.00%) let data = Bucket::from_base_index(self.data_end(), 0); 27 ( 0.00%) RawIter { 21 ( 0.00%) iter: RawIterRange::new(self.table.ctrl.as_ptr(), data, self.table.buckets()), 217,175 ( 0.00%) items: self.table.items, . } 6 ( 0.00%) } . . /// 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. . /// . /// It is up to the caller to ensure that the `RawTable` outlives the -- line 956 ---------------------------------------- -- 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(); 16,556 ( 0.00%) let allocation = self.into_allocation(); 12,417 ( 0.00%) RawIntoIter { 20,695 ( 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)> { 8,297 ( 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(( 1,325 ( 0.00%) unsafe { NonNull::new_unchecked(self.table.ctrl.as_ptr().sub(ctrl_offset)) }, . layout, . )) . }; . mem::forget(self); . alloc . } . } . -- line 1033 ---------------------------------------- -- line 1041 ---------------------------------------- . where . T: Sync, . A: Sync, . { . } . . impl RawTableInner { . #[inline] 12 ( 0.00%) const fn new_in(alloc: A) -> Self { 2,192,556 ( 0.04%) Self { . // Be careful to cast the entire slice to a raw pointer. 28 ( 0.00%) ctrl: unsafe { NonNull::new_unchecked(Group::static_empty() as *const _ as *mut u8) }, . bucket_mask: 0, . items: 0, . growth_left: 0, . alloc, . } 8 ( 0.00%) } . } . . impl RawTableInner { . #[cfg_attr(feature = "inline-more", inline)] 1,441,783 ( 0.02%) 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. 48 ( 0.00%) let (layout, ctrl_offset) = match table_layout.calculate_layout_for(buckets) { 36 ( 0.00%) Some(lco) => lco, . None => return Err(fallibility.capacity_overflow()), . }; . . // We need an additional check to ensure that the allocation doesn't . // 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. 12 ( 0.00%) if mem::size_of::() < 8 && layout.size() > isize::MAX as usize { . return Err(fallibility.capacity_overflow()); . } . 311,594 ( 0.01%) let ptr: NonNull = match do_alloc(&alloc, layout) { 18 ( 0.00%) Ok(block) => block.cast(), . Err(_) => return Err(fallibility.alloc_err(layout)), . }; . 27 ( 0.00%) let ctrl = NonNull::new_unchecked(ptr.as_ptr().add(ctrl_offset)); 792,681 ( 0.01%) Ok(Self { . ctrl, 351,217 ( 0.01%) bucket_mask: buckets - 1, . items: 0, 27 ( 0.00%) growth_left: bucket_mask_to_capacity(buckets - 1), . alloc, . }) 1,049,242 ( 0.02%) } . . #[inline] 49,991 ( 0.00%) fn fallible_with_capacity( . alloc: A, . table_layout: TableLayout, . capacity: usize, . fallibility: Fallibility, . ) -> Result { 13,142 ( 0.00%) if capacity == 0 { 7,835 ( 0.00%) Ok(Self::new_in(alloc)) . } else { . unsafe { . let buckets = 51 ( 0.00%) capacity_to_buckets(capacity).ok_or_else(|| fallibility.capacity_overflow())?; . 653,029 ( 0.01%) let result = Self::new_uninitialized(alloc, table_layout, buckets, fallibility)?; 18 ( 0.00%) result.ctrl(0).write_bytes(EMPTY, result.num_ctrl_bytes()); . 29,015 ( 0.00%) Ok(result) . } . } 49,964 ( 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] 317,421 ( 0.01%) unsafe fn prepare_insert_slot(&self, hash: u64) -> (usize, u8) { . let index = self.find_insert_slot(hash); 317,421 ( 0.01%) let old_ctrl = *self.ctrl(index); . self.set_ctrl_h2(index, hash); . (index, old_ctrl) 634,842 ( 0.01%) } . . /// Searches for an empty or deleted bucket which is suitable for inserting . /// a new element. . /// . /// There must be at least 1 empty bucket in the table. . #[inline] 24 ( 0.00%) fn find_insert_slot(&self, hash: u64) -> usize { 18 ( 0.00%) let mut probe_seq = self.probe_seq(hash); 6 ( 0.00%) loop { . unsafe { 48 ( 0.00%) let group = Group::load(self.ctrl(probe_seq.pos)); 2,993,191 ( 0.05%) if let Some(bit) = group.match_empty_or_deleted().lowest_set_bit() { 8,800,323 ( 0.15%) 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). 4,052,784 ( 0.07%) 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(); . } . 12 ( 0.00%) return result; . } . } . probe_seq.move_next(self.bucket_mask); . } 18 ( 0.00%) } . . /// 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] 72 ( 0.00%) fn find_inner(&self, hash: u64, eq: &mut dyn FnMut(usize) -> bool) -> Option { 18 ( 0.00%) let h2_hash = h2(hash); 18 ( 0.00%) let mut probe_seq = self.probe_seq(hash); . 439,938 ( 0.01%) loop { 48 ( 0.00%) let group = unsafe { Group::load(self.ctrl(probe_seq.pos)) }; . 10,434,653 ( 0.18%) for bit in group.match_byte(h2_hash) { 21,812,023 ( 0.38%) let index = (probe_seq.pos + bit) & self.bucket_mask; . 13,111,030 ( 0.23%) if likely(eq(index)) { 4 ( 0.00%) return Some(index); . } . } . 2,709,962 ( 0.05%) if likely(group.match_empty().any_bit_set()) { 4 ( 0.00%) return None; . } . . probe_seq.move_next(self.bucket_mask); . } 24 ( 0.00%) } . . #[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. 17 ( 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. 15 ( 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(); 10,695,264 ( 0.18%) base.sub((index + 1) * size_of) . } . . #[inline] . unsafe fn data_end(&self) -> NonNull { . NonNull::new_unchecked(self.ctrl.as_ptr().cast()) . } . . /// Returns an iterator-like object for a probe sequence on the table. . /// . /// This iterator never terminates, but is guaranteed to visit each bucket . /// group exactly once. The loop using `probe_seq` must terminate upon . /// reaching a group containing an empty bucket. . #[inline] 84 ( 0.00%) fn probe_seq(&self, hash: u64) -> ProbeSeq { 24 ( 0.00%) ProbeSeq { 57,146,610 ( 0.99%) pos: h1(hash) & self.bucket_mask, . stride: 0, . } 48 ( 0.00%) } . . /// 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] . unsafe fn prepare_insert_no_grow(&mut self, hash: u64) -> Result { . let index = self.find_insert_slot(hash); . let old_ctrl = *self.ctrl(index); -- line 1260 ---------------------------------------- -- line 1262 ---------------------------------------- . Err(()) . } else { . self.record_item_insert_at(index, old_ctrl, hash); . Ok(index) . } . } . . #[inline] 27 ( 0.00%) unsafe fn record_item_insert_at(&mut self, index: usize, old_ctrl: u8, hash: u64) { 5,601,441 ( 0.10%) self.growth_left -= special_is_empty(old_ctrl) as usize; 6 ( 0.00%) self.set_ctrl_h2(index, hash); 4,481,145 ( 0.08%) self.items += 1; 6 ( 0.00%) } . . #[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; 192 ( 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] 27 ( 0.00%) unsafe fn set_ctrl_h2(&self, index: usize, hash: u64) { 12 ( 0.00%) self.set_ctrl(index, h2(hash)); 6 ( 0.00%) } . . #[inline] . unsafe fn replace_ctrl_h2(&self, index: usize, hash: u64) -> u8 { . let prev_ctrl = *self.ctrl(index); . self.set_ctrl_h2(index, hash); . prev_ctrl . } . . /// Sets a control byte, and possibly also the replicated control byte at . /// the end of the array. . #[inline] 30 ( 0.00%) unsafe fn set_ctrl(&self, index: usize, ctrl: u8) { . // Replicate the first Group::WIDTH control bytes at the end of . // the array without using a branch: . // - If index >= Group::WIDTH then index == index2. . // - Otherwise index2 == self.bucket_mask + 1 + index. . // . // The very last replicated control byte is never actually read because . // we mask the initial index for unaligned loads, but we write it . // anyways because it makes the set_ctrl implementation simpler. -- line 1309 ---------------------------------------- -- 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] | . // --------------------------------------------- 8,361,612 ( 0.14%) let index2 = ((index.wrapping_sub(Group::WIDTH)) & self.bucket_mask) + Group::WIDTH; . 2,787,209 ( 0.05%) *self.ctrl(index) = ctrl; 2,792,976 ( 0.05%) *self.ctrl(index2) = ctrl; 6 ( 0.00%) } . . /// Returns a pointer to a control byte. . #[inline] 132 ( 0.00%) unsafe fn ctrl(&self, index: usize) -> *mut u8 { . debug_assert!(index < self.num_ctrl_bytes()); 99 ( 0.00%) self.ctrl.as_ptr().add(index) 66 ( 0.00%) } . . #[inline] 18 ( 0.00%) fn buckets(&self) -> usize { 826,130 ( 0.01%) self.bucket_mask + 1 18 ( 0.00%) } . . #[inline] 6 ( 0.00%) fn num_ctrl_bytes(&self) -> usize { 750,858 ( 0.01%) self.bucket_mask + 1 + Group::WIDTH 6 ( 0.00%) } . . #[inline] 14 ( 0.00%) fn is_empty_singleton(&self) -> bool { 4,038,491 ( 0.07%) self.bucket_mask == 0 28 ( 0.00%) } . . #[allow(clippy::mut_mut)] . #[inline] 51 ( 0.00%) unsafe fn prepare_resize( . &self, . table_layout: TableLayout, . capacity: usize, . fallibility: Fallibility, . ) -> Result, TryReserveError> { 3 ( 0.00%) debug_assert!(self.items <= capacity); . . // Allocate and initialize the new table. 4,995 ( 0.00%) let mut new_table = RawTableInner::fallible_with_capacity( 3 ( 0.00%) self.alloc.clone(), . table_layout, . capacity, . fallibility, . )?; 482,839 ( 0.01%) new_table.growth_left -= self.items; 6 ( 0.00%) 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. 81 ( 0.00%) Ok(guard(new_table, move |self_| { 215,830 ( 0.00%) if !self_.is_empty_singleton() { . self_.free_buckets(table_layout); . } 6 ( 0.00%) })) 12 ( 0.00%) } . . /// Reserves or rehashes to make room for `additional` more elements. . /// . /// This uses dynamic dispatch to reduce the amount of . /// code generated, but it is eliminated by LLVM optimizations when inlined. . #[allow(clippy::inline_always)] . #[inline(always)] . unsafe fn reserve_rehash_inner( -- line 1387 ---------------------------------------- -- 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. 431,682 ( 0.01%) let new_items = match self.items.checked_add(additional) { 12 ( 0.00%) Some(new_items) => new_items, . None => return Err(fallibility.capacity_overflow()), . }; 431,655 ( 0.01%) let full_capacity = bucket_mask_to_capacity(self.bucket_mask); 919,619 ( 0.02%) 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); 10 ( 0.00%) Ok(()) . } else { . // Otherwise, conservatively resize to at least the next size up . // to avoid churning deletes into frequent rehashes. . self.resize_inner( 215,845 ( 0.00%) usize::max(new_items, full_capacity + 1), . hasher, . fallibility, . layout, . ) . } 6 ( 0.00%) } . . /// Allocates a new table of a different size and moves the contents of the . /// current table into it. . /// . /// This uses dynamic dispatch to reduce the amount of . /// code generated, but it is eliminated by LLVM optimizations when inlined. . #[allow(clippy::inline_always)] . #[inline(always)] . unsafe fn resize_inner( . &mut self, . capacity: usize, . hasher: &dyn Fn(&mut Self, usize) -> u64, . fallibility: Fallibility, . layout: TableLayout, . ) -> Result<(), TryReserveError> { 11,662 ( 0.00%) let mut new_table = self.prepare_resize(layout, capacity, fallibility)?; . . // Copy all elements to the new table. 123 ( 0.00%) for i in 0..self.buckets() { 1,699,771 ( 0.03%) if !is_full(*self.ctrl(i)) { . continue; . } . . // This may panic. . let hash = hasher(self, i); . . // We can use a simpler version of insert() here since: . // - there are no DELETED entries. -- line 1444 ---------------------------------------- -- line 1452 ---------------------------------------- . layout.size, . ); . } . . // 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). 15 ( 0.00%) mem::swap(self, &mut new_table); . 215,821 ( 0.00%) Ok(()) 12 ( 0.00%) } . . /// 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 . /// code generated, but it is eliminated by LLVM optimizations when inlined. -- line 1471 ---------------------------------------- -- 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() { 384 ( 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. 64 ( 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; . } . } . } . 15 ( 0.00%) guard.growth_left = bucket_mask_to_capacity(guard.bucket_mask) - guard.items; . . mem::forget(guard); . } . . #[inline] 21 ( 0.00%) unsafe fn free_buckets(&mut self, table_layout: TableLayout) { . // Avoid `Option::unwrap_or_else` because it bloats LLVM IR. 60 ( 0.00%) let (layout, ctrl_offset) = match table_layout.calculate_layout_for(self.buckets()) { 36 ( 0.00%) Some(lco) => lco, . None => hint::unreachable_unchecked(), . }; 9 ( 0.00%) self.alloc.deallocate( 147,060 ( 0.00%) NonNull::new_unchecked(self.ctrl.as_ptr().sub(ctrl_offset)), . layout, . ); 6 ( 0.00%) } . . /// Marks all table buckets as empty without dropping their contents. . #[inline] . fn clear_no_drop(&mut self) { 14,493 ( 0.00%) if !self.is_empty_singleton() { . unsafe { . self.ctrl(0).write_bytes(EMPTY, self.num_ctrl_bytes()); . } . } 18,234 ( 0.00%) self.items = 0; 14,493 ( 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))); 273,345 ( 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. 1,093,380 ( 0.02%) let ctrl = if empty_before.leading_zeros() + empty_after.trailing_zeros() >= Group::WIDTH { . DELETED . } else { 1,340,370 ( 0.02%) self.growth_left += 1; . EMPTY . }; . self.set_ctrl(index, ctrl); 1,093,380 ( 0.02%) self.items -= 1; . } . } . . impl Clone for RawTable { 10,360 ( 0.00%) fn clone(&self) -> Self { 1,382 ( 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) . } . } 11,655 ( 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; 178 ( 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)] 1,803,636 ( 0.03%) fn drop(&mut self) { 1,723,195 ( 0.03%) if !self.table.is_empty_singleton() { . unsafe { 3 ( 0.00%) self.drop_elements(); 3 ( 0.00%) self.free_buckets(); . } . } 1,842,994 ( 0.03%) } . } . #[cfg(not(feature = "nightly"))] . impl Drop for RawTable { . #[cfg_attr(feature = "inline-more", inline)] . fn drop(&mut self) { . if !self.table.is_empty_singleton() { . unsafe { . self.drop_elements(); -- line 1813 ---------------------------------------- -- line 1817 ---------------------------------------- . } . } . . impl IntoIterator for RawTable { . type Item = T; . type IntoIter = RawIntoIter; . . #[cfg_attr(feature = "inline-more", inline)] 16,556 ( 0.00%) fn into_iter(self) -> RawIntoIter { . unsafe { . let iter = self.iter(); . self.into_iter_from(iter) . } 20,695 ( 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 1848 ---------------------------------------- . end: *const u8, . } . . impl RawIterRange { . /// Returns a `RawIterRange` covering a subset of a table. . /// . /// The control byte address must be aligned to the group size. . #[cfg_attr(feature = "inline-more", inline)] 36 ( 0.00%) unsafe fn new(ctrl: *const u8, data: Bucket, len: usize) -> Self { . debug_assert_ne!(len, 0); . debug_assert_eq!(ctrl as usize % Group::WIDTH, 0); 3 ( 0.00%) let end = ctrl.add(len); . . // Load the first group and advance ctrl to point to the next group 18 ( 0.00%) let current_group = Group::load_aligned(ctrl).match_full(); 3 ( 0.00%) let next_ctrl = ctrl.add(Group::WIDTH); . 12 ( 0.00%) Self { . current_group, . data, . next_ctrl, . end, . } 6 ( 0.00%) } . . /// Splits a `RawIterRange` into two halves. . /// . /// Returns `None` if the remaining range is smaller than or equal to the . /// group width. . #[cfg_attr(feature = "inline-more", inline)] . #[cfg(feature = "rayon")] . pub(crate) fn split(mut self) -> (Self, Option>) { -- line 1879 ---------------------------------------- -- line 1931 ---------------------------------------- . } . } . } . . impl Iterator for RawIterRange { . type Item = Bucket; . . #[cfg_attr(feature = "inline-more", inline)] 24 ( 0.00%) fn next(&mut self) -> Option> { . unsafe { . loop { 654,309 ( 0.01%) if let Some(index) = self.current_group.lowest_set_bit() { 86,616 ( 0.00%) self.current_group = self.current_group.remove_lowest_bit(); 137,613 ( 0.00%) return Some(self.data.next_n(index)); . } . 519,128 ( 0.01%) if self.next_ctrl >= self.end { 3 ( 0.00%) 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). 16,581 ( 0.00%) self.current_group = Group::load_aligned(self.next_ctrl).match_full(); 11,614 ( 0.00%) self.data = self.data.next_n(Group::WIDTH); 36,006 ( 0.00%) self.next_ctrl = self.next_ctrl.add(Group::WIDTH); . } . } 18 ( 0.00%) } . . #[inline] . fn size_hint(&self) -> (usize, Option) { . // We don't have an item count, so just guess based on the range size. . ( . 0, . Some(unsafe { offset_from(self.end, self.next_ctrl) + Group::WIDTH }), . ) -- line 1969 ---------------------------------------- -- line 2102 ---------------------------------------- . } . } else { . // We must have already iterated past the removed item. . } . } . } . . unsafe fn drop_elements(&mut self) { 3,304 ( 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)] 97,661 ( 0.00%) fn next(&mut self) -> Option> { 258,396 ( 0.00%) if let Some(b) = self.iter.next() { 1,033,563 ( 0.02%) self.items -= 1; 3 ( 0.00%) 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); 3 ( 0.00%) None . } 195,304 ( 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)] 6,338 ( 0.00%) fn drop(&mut self) { . unsafe { . // Drop all remaining elements . self.iter.drop_elements(); . . // Free the table 39,255 ( 0.00%) if let Some((ptr, layout)) = self.allocation { . self.alloc.deallocate(ptr, layout); . } . } 424 ( 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)] 1,865 ( 0.00%) fn next(&mut self) -> Option { 1,365 ( 0.00%) unsafe { Some(self.iter.next()?.read()) } 3,730 ( 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)] 2,240 ( 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. 280 ( 0.00%) self.orig_table . .as_ptr() . .copy_from_nonoverlapping(&*self.table, 1); . } 2,240 ( 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 ---------------------------------------- 32,751,040 ( 0.57%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/subst.rs -------------------------------------------------------------------------------- Ir -- line 22 ---------------------------------------- . . /// An entity in the Rust type system, which can be one of . /// several kinds (types, lifetimes, and consts). . /// To reduce memory usage, a `GenericArg` is an interned pointer, . /// with the lowest 2 bits being reserved for a tag to . /// indicate the type (`Ty`, `Region`, or `Const`) it points to. . #[derive(Copy, Clone, PartialEq, Eq, Hash)] . pub struct GenericArg<'tcx> { 3,760,794 ( 0.07%) ptr: NonZeroUsize, 7,783,809 ( 0.13%) marker: PhantomData<(Ty<'tcx>, ty::Region<'tcx>, &'tcx ty::Const<'tcx>)>, . } . . const TAG_MASK: usize = 0b11; . const TYPE_TAG: usize = 0b00; . const REGION_TAG: usize = 0b01; . const CONST_TAG: usize = 0b10; . 74,687 ( 0.00%) #[derive(Debug, TyEncodable, TyDecodable, PartialEq, Eq, PartialOrd, Ord, HashStable)] . pub enum GenericArgKind<'tcx> { . Lifetime(ty::Region<'tcx>), . Type(Ty<'tcx>), . Const(&'tcx ty::Const<'tcx>), . } . . impl<'tcx> GenericArgKind<'tcx> { 17,750 ( 0.00%) fn pack(self) -> GenericArg<'tcx> { 17,750 ( 0.00%) let (tag, ptr) = match self { . GenericArgKind::Lifetime(lt) => { . // Ensure we can use the tag bits. . assert_eq!(mem::align_of_val(lt) & TAG_MASK, 0); . (REGION_TAG, lt as *const _ as usize) . } . GenericArgKind::Type(ty) => { . // Ensure we can use the tag bits. . assert_eq!(mem::align_of_val(ty) & TAG_MASK, 0); -- line 56 ---------------------------------------- -- line 58 ---------------------------------------- . } . GenericArgKind::Const(ct) => { . // Ensure we can use the tag bits. . assert_eq!(mem::align_of_val(ct) & TAG_MASK, 0); . (CONST_TAG, ct as *const _ as usize) . } . }; . 1,576,383 ( 0.03%) GenericArg { ptr: unsafe { NonZeroUsize::new_unchecked(ptr | tag) }, marker: PhantomData } 17,750 ( 0.00%) } . } . . impl<'tcx> fmt::Debug for GenericArg<'tcx> { . fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { . match self.unpack() { . GenericArgKind::Lifetime(lt) => lt.fmt(f), . GenericArgKind::Type(ty) => ty.fmt(f), . GenericArgKind::Const(ct) => ct.fmt(f), -- line 75 ---------------------------------------- -- line 85 ---------------------------------------- . . impl<'tcx> PartialOrd for GenericArg<'tcx> { . fn partial_cmp(&self, other: &GenericArg<'_>) -> Option { . Some(self.cmp(&other)) . } . } . . impl<'tcx> From> for GenericArg<'tcx> { 1,383,413 ( 0.02%) fn from(r: ty::Region<'tcx>) -> GenericArg<'tcx> { . GenericArgKind::Lifetime(r).pack() 1,383,413 ( 0.02%) } . } . . impl<'tcx> From> for GenericArg<'tcx> { 4,267,160 ( 0.07%) fn from(ty: Ty<'tcx>) -> GenericArg<'tcx> { . GenericArgKind::Type(ty).pack() 4,267,160 ( 0.07%) } . } . . impl<'tcx> From<&'tcx ty::Const<'tcx>> for GenericArg<'tcx> { 3,225 ( 0.00%) fn from(c: &'tcx ty::Const<'tcx>) -> GenericArg<'tcx> { . GenericArgKind::Const(c).pack() 3,225 ( 0.00%) } . } . . impl<'tcx> GenericArg<'tcx> { . #[inline] . pub fn unpack(self) -> GenericArgKind<'tcx> { . let ptr = self.ptr.get(); . unsafe { 43,225,155 ( 0.75%) match ptr & TAG_MASK { 464,054 ( 0.01%) REGION_TAG => GenericArgKind::Lifetime(&*((ptr & !TAG_MASK) as *const _)), 10,762,432 ( 0.19%) TYPE_TAG => GenericArgKind::Type(&*((ptr & !TAG_MASK) as *const _)), 4,303 ( 0.00%) CONST_TAG => GenericArgKind::Const(&*((ptr & !TAG_MASK) as *const _)), . _ => intrinsics::unreachable(), . } . } . } . . /// Unpack the `GenericArg` as a type when it is known certainly to be a type. . /// This is true in cases where `Substs` is used in places where the kinds are known . /// to be limited (e.g. in tuples, where the only parameters are type parameters). . pub fn expect_ty(self) -> Ty<'tcx> { . match self.unpack() { . GenericArgKind::Type(ty) => ty, . _ => bug!("expected a type, but found another kind"), . } 136,022 ( 0.00%) } . . /// Unpack the `GenericArg` as a const when it is known certainly to be a const. . pub fn expect_const(self) -> &'tcx ty::Const<'tcx> { . match self.unpack() { . GenericArgKind::Const(c) => c, . _ => bug!("expected a const, but found another kind"), . } . } -- line 140 ---------------------------------------- -- line 155 ---------------------------------------- . impl<'tcx> TypeFoldable<'tcx> for GenericArg<'tcx> { . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { . match self.unpack() { . GenericArgKind::Lifetime(lt) => lt.try_fold_with(folder).map(Into::into), . GenericArgKind::Type(ty) => ty.try_fold_with(folder).map(Into::into), 6 ( 0.00%) GenericArgKind::Const(ct) => ct.try_fold_with(folder).map(Into::into), . } . } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { . match self.unpack() { . GenericArgKind::Lifetime(lt) => lt.visit_with(visitor), . GenericArgKind::Type(ty) => ty.visit_with(visitor), . GenericArgKind::Const(ct) => ct.visit_with(visitor), . } . } . } . . impl<'tcx, E: TyEncoder<'tcx>> Encodable for GenericArg<'tcx> { . fn encode(&self, e: &mut E) -> Result<(), E::Error> { 33,665 ( 0.00%) self.unpack().encode(e) . } . } . . impl<'tcx, D: TyDecoder<'tcx>> Decodable for GenericArg<'tcx> { 88,750 ( 0.00%) fn decode(d: &mut D) -> GenericArg<'tcx> { 88,750 ( 0.00%) GenericArgKind::decode(d).pack() . } . } . . /// A substitution mapping generic parameters to new values. . pub type InternalSubsts<'tcx> = List>; . . pub type SubstsRef<'tcx> = &'tcx InternalSubsts<'tcx>; . . impl<'a, 'tcx> InternalSubsts<'tcx> { . /// Interpret these substitutions as the substitutions of a closure type. . /// Closure substitutions have a particular structure controlled by the . /// compiler that encodes information like the signature and closure kind; . /// see `ty::ClosureSubsts` struct for more comments. 3,734 ( 0.00%) pub fn as_closure(&'a self) -> ClosureSubsts<'a> { . ClosureSubsts { substs: self } 3,734 ( 0.00%) } . . /// Interpret these substitutions as the substitutions of a generator type. . /// Generator substitutions have a particular structure controlled by the . /// compiler that encodes information like the signature and generator kind; . /// see `ty::GeneratorSubsts` struct for more comments. . pub fn as_generator(&'tcx self) -> GeneratorSubsts<'tcx> { . GeneratorSubsts { substs: self } . } -- line 208 ---------------------------------------- -- line 211 ---------------------------------------- . /// Inline const substitutions have a particular structure controlled by the . /// compiler that encodes information like the inferred type; . /// see `ty::InlineConstSubsts` struct for more comments. . pub fn as_inline_const(&'tcx self) -> InlineConstSubsts<'tcx> { . InlineConstSubsts { substs: self } . } . . /// Creates an `InternalSubsts` that maps each generic parameter to itself. 31,550 ( 0.00%) pub fn identity_for_item(tcx: TyCtxt<'tcx>, def_id: DefId) -> SubstsRef<'tcx> { 49,464 ( 0.00%) Self::for_item(tcx, def_id, |param, _| tcx.mk_param_from_def(param)) 28,395 ( 0.00%) } . . /// Creates an `InternalSubsts` for generic parameter definitions, . /// by calling closures to obtain each kind. . /// The closures get to observe the `InternalSubsts` as they're . /// being built, which can be used to correctly . /// substitute defaults of generic parameters. 286,065 ( 0.00%) pub fn for_item(tcx: TyCtxt<'tcx>, def_id: DefId, mut mk_kind: F) -> SubstsRef<'tcx> . where . F: FnMut(&ty::GenericParamDef, &[GenericArg<'tcx>]) -> GenericArg<'tcx>, . { . let defs = tcx.generics_of(def_id); . let count = defs.count(); . let mut substs = SmallVec::with_capacity(count); 106,218 ( 0.00%) Self::fill_item(&mut substs, tcx, defs, &mut mk_kind); 63,940 ( 0.00%) tcx.intern_substs(&substs) 287,757 ( 0.00%) } . . pub fn extend_to(&self, tcx: TyCtxt<'tcx>, def_id: DefId, mut mk_kind: F) -> SubstsRef<'tcx> . where . F: FnMut(&ty::GenericParamDef, &[GenericArg<'tcx>]) -> GenericArg<'tcx>, . { . Self::for_item(tcx, def_id, |param, substs| { . self.get(param.index as usize).cloned().unwrap_or_else(|| mk_kind(param, substs)) . }) . } . 424,272 ( 0.01%) pub fn fill_item( . substs: &mut SmallVec<[GenericArg<'tcx>; 8]>, . tcx: TyCtxt<'tcx>, . defs: &ty::Generics, . mk_kind: &mut F, . ) where . F: FnMut(&ty::GenericParamDef, &[GenericArg<'tcx>]) -> GenericArg<'tcx>, . { 177,460 ( 0.00%) if let Some(def_id) = defs.parent { . let parent_defs = tcx.generics_of(def_id); 34,901 ( 0.00%) Self::fill_item(substs, tcx, parent_defs, mk_kind); . } . Self::fill_single(substs, defs, mk_kind) 337,560 ( 0.01%) } . 704 ( 0.00%) pub fn fill_single( . substs: &mut SmallVec<[GenericArg<'tcx>; 8]>, . defs: &ty::Generics, . mk_kind: &mut F, . ) where . F: FnMut(&ty::GenericParamDef, &[GenericArg<'tcx>]) -> GenericArg<'tcx>, . { . substs.reserve(defs.params.len()); . for param in &defs.params { . let kind = mk_kind(param, substs); 438,324 ( 0.01%) assert_eq!(param.index as usize, substs.len()); . substs.push(kind); . } 704 ( 0.00%) } . . #[inline] . pub fn types(&'a self) -> impl DoubleEndedIterator> + 'a { . self.iter() . .filter_map(|k| if let GenericArgKind::Type(ty) = k.unpack() { Some(ty) } else { None }) . } . . #[inline] -- line 284 ---------------------------------------- -- line 302 ---------------------------------------- . self.iter().filter_map(|k| match k.unpack() { . GenericArgKind::Lifetime(_) => None, . generic => Some(generic), . }) . } . . #[inline] . pub fn type_at(&self, i: usize) -> Ty<'tcx> { 957,519 ( 0.02%) if let GenericArgKind::Type(ty) = self[i].unpack() { . ty . } else { . bug!("expected type for param #{} in {:?}", i, self); . } . } . . #[inline] . pub fn region_at(&self, i: usize) -> ty::Region<'tcx> { -- line 318 ---------------------------------------- -- line 350 ---------------------------------------- . /// impl X for U { fn f() {} } . /// ``` . /// . /// * If `self` is `[Self, S, T]`: the identity substs of `f` in the trait. . /// * If `source_ancestor` is the def_id of the trait. . /// * If `target_substs` is `[U]`, the substs for the impl. . /// * Then we will return `[U, T]`, the subst for `f` in the impl that . /// are needed for it to match the trait. 29,848 ( 0.00%) pub fn rebase_onto( . &self, . tcx: TyCtxt<'tcx>, . source_ancestor: DefId, . target_substs: SubstsRef<'tcx>, . ) -> SubstsRef<'tcx> { . let defs = tcx.generics_of(source_ancestor); 8,528 ( 0.00%) tcx.mk_substs(target_substs.iter().chain(self.iter().skip(defs.params.len()))) 34,112 ( 0.00%) } . . pub fn truncate_to(&self, tcx: TyCtxt<'tcx>, generics: &ty::Generics) -> SubstsRef<'tcx> { . tcx.mk_substs(self.iter().take(generics.count())) . } . } . . impl<'tcx> TypeFoldable<'tcx> for SubstsRef<'tcx> { 636,258 ( 0.01%) fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { . // This code is hot enough that it's worth specializing for the most . // common length lists, to avoid the overhead of `SmallVec` creation. . // The match arms are in order of frequency. The 1, 2, and 0 cases are . // typically hit in 90--99.99% of cases. When folding doesn't change . // the substs, it's faster to reuse the existing substs rather than . // calling `intern_substs`. 14,897,096 ( 0.26%) match self.len() { . 1 => { 1,944,416 ( 0.03%) let param0 = self[0].try_fold_with(folder)?; 4,874,343 ( 0.08%) if param0 == self[0] { Ok(self) } else { Ok(folder.tcx().intern_substs(&[param0])) } . } . 2 => { 1,122,901 ( 0.02%) let param0 = self[0].try_fold_with(folder)?; 2,660,817 ( 0.05%) let param1 = self[1].try_fold_with(folder)?; 3,151,293 ( 0.05%) if param0 == self[0] && param1 == self[1] { . Ok(self) . } else { 1,879,402 ( 0.03%) Ok(folder.tcx().intern_substs(&[param0, param1])) . } . } . 0 => Ok(self), . _ => { . let params: SmallVec<[_; 8]> = 1,164,902 ( 0.02%) self.iter().map(|k| k.try_fold_with(folder)).collect::>()?; 23,497 ( 0.00%) if params[..] == self[..] { . Ok(self) . } else { 1,725,483 ( 0.03%) Ok(folder.tcx().intern_substs(¶ms)) . } . } . } 851,442 ( 0.01%) } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { 1,159,008 ( 0.02%) self.iter().try_for_each(|t| t.visit_with(visitor)) . } . } . . /////////////////////////////////////////////////////////////////////////// . // Public trait `Subst` . // . // Just call `foo.subst(tcx, substs)` to perform a substitution across . // `foo`. Or use `foo.subst_spanned(tcx, substs, Some(span))` when -- line 420 ---------------------------------------- -- line 435 ---------------------------------------- . . impl<'tcx, T: TypeFoldable<'tcx>> Subst<'tcx> for T { . fn subst_spanned( . self, . tcx: TyCtxt<'tcx>, . substs: &[GenericArg<'tcx>], . span: Option, . ) -> T { 1,417,878 ( 0.02%) let mut folder = SubstFolder { tcx, substs, span, binders_passed: 0 }; . self.fold_with(&mut folder) . } . } . . /////////////////////////////////////////////////////////////////////////// . // The actual substitution engine itself is a type folder. . . struct SubstFolder<'a, 'tcx> { -- line 451 ---------------------------------------- -- line 456 ---------------------------------------- . span: Option, . . /// Number of region binders we have passed through while doing the substitution . binders_passed: u32, . } . . impl<'a, 'tcx> TypeFolder<'tcx> for SubstFolder<'a, 'tcx> { . fn tcx<'b>(&'b self) -> TyCtxt<'tcx> { 352,244 ( 0.01%) self.tcx . } . . fn fold_binder>( . &mut self, . t: ty::Binder<'tcx, T>, . ) -> ty::Binder<'tcx, T> { 592,920 ( 0.01%) self.binders_passed += 1; 142,880 ( 0.00%) let t = t.super_fold_with(self); 592,920 ( 0.01%) self.binders_passed -= 1; . t . } . 450,180 ( 0.01%) fn fold_region(&mut self, r: ty::Region<'tcx>) -> ty::Region<'tcx> { . // Note: This routine only handles regions that are bound on . // type declarations and other outer declarations, not those . // bound in *fn types*. Region substitution of the bound . // regions that appear in a function signature is done using . // the specialized routine `ty::replace_late_regions()`. 150,060 ( 0.00%) match *r { 139,806 ( 0.00%) ty::ReEarlyBound(data) => { 139,806 ( 0.00%) let rk = self.substs.get(data.index as usize).map(|k| k.unpack()); . match rk { 69,903 ( 0.00%) Some(GenericArgKind::Lifetime(lt)) => self.shift_region_through_binders(lt), . _ => { . let span = self.span.unwrap_or(DUMMY_SP); . let msg = format!( . "Region parameter out of range \ . when substituting in region {} (index={})", . data.name, data.index . ); . span_bug!(span, "{}", msg); . } . } . } . _ => r, . } 525,210 ( 0.01%) } . 1,283,466 ( 0.02%) fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> { 427,822 ( 0.01%) if !t.needs_subst() { . return t; . } . 807,256 ( 0.01%) match *t.kind() { 1,501,525 ( 0.03%) ty::Param(p) => self.ty_for_param(p, t), 619,938 ( 0.01%) _ => t.super_fold_with(self), . } 1,622,495 ( 0.03%) } . 5,418 ( 0.00%) fn fold_const(&mut self, c: &'tcx ty::Const<'tcx>) -> &'tcx ty::Const<'tcx> { 5,333 ( 0.00%) if let ty::ConstKind::Param(p) = c.val { . self.const_for_param(p, c) . } else { 153 ( 0.00%) c.super_fold_with(self) . } 6,056 ( 0.00%) } . . #[inline] . fn fold_mir_const(&mut self, c: mir::ConstantKind<'tcx>) -> mir::ConstantKind<'tcx> { . c.super_fold_with(self) . } . } . . impl<'a, 'tcx> SubstFolder<'a, 'tcx> { . fn ty_for_param(&self, p: ty::ParamTy, source_ty: Ty<'tcx>) -> Ty<'tcx> { . // Look up the type in the substitutions. It really should be in there. 600,610 ( 0.01%) let opt_ty = self.substs.get(p.index as usize).map(|k| k.unpack()); . let ty = match opt_ty { . Some(GenericArgKind::Type(ty)) => ty, . Some(kind) => { . let span = self.span.unwrap_or(DUMMY_SP); . span_bug!( . span, . "expected type for `{:?}` ({:?}/{}) but found {:?} \ . when substituting, substs={:?}", -- line 539 ---------------------------------------- -- line 562 ---------------------------------------- . } . . fn const_for_param( . &self, . p: ParamConst, . source_ct: &'tcx ty::Const<'tcx>, . ) -> &'tcx ty::Const<'tcx> { . // Look up the const in the substitutions. It really should be in there. 1,514 ( 0.00%) let opt_ct = self.substs.get(p.index as usize).map(|k| k.unpack()); . let ct = match opt_ct { . Some(GenericArgKind::Const(ct)) => ct, . Some(kind) => { . let span = self.span.unwrap_or(DUMMY_SP); . span_bug!( . span, . "expected const for `{:?}` ({:?}/{}) but found {:?} \ . when substituting substs={:?}", -- line 578 ---------------------------------------- -- line 645 ---------------------------------------- . fn shift_vars_through_binders>(&self, val: T) -> T { . debug!( . "shift_vars(val={:?}, binders_passed={:?}, has_escaping_bound_vars={:?})", . val, . self.binders_passed, . val.has_escaping_bound_vars() . ); . 1,085,065 ( 0.02%) if self.binders_passed == 0 || !val.has_escaping_bound_vars() { . return val; . } . . let result = ty::fold::shift_vars(self.tcx(), val, self.binders_passed); . debug!("shift_vars: shifted result = {:?}", result); . . result . } . . fn shift_region_through_binders(&self, region: ty::Region<'tcx>) -> ty::Region<'tcx> { 184,756 ( 0.00%) if self.binders_passed == 0 || !region.has_escaping_bound_vars() { . return region; . } . ty::fold::shift_region(self.tcx, region, self.binders_passed) . } . } . . /// Stores the user-given substs to reach some fully qualified path . /// (e.g., `::Item` or `::Item`). . #[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, TyEncodable, TyDecodable)] 15,605 ( 0.00%) #[derive(HashStable, TypeFoldable, Lift)] . pub struct UserSubsts<'tcx> { . /// The substitutions for the item as given by the user. . pub substs: SubstsRef<'tcx>, . . /// The self type, in the case of a `::Item` path (when applied . /// to an inherent impl). See `UserSelfTy` below. 4,520 ( 0.00%) pub user_self_ty: Option>, . } . . /// Specifies the user-given self type. In the case of a path that . /// refers to a member in an inherent impl, this self type is . /// sometimes needed to constrain the type parameters on the impl. For . /// example, in this code: . /// . /// ``` -- line 689 ---------------------------------------- -- line 696 ---------------------------------------- . /// self type `Foo`. Then we can instantiate the parameters of . /// the impl (with the substs from `UserSubsts`) and apply those to . /// the self type, giving `Foo`. Finally, we unify that with . /// the self type here, which contains `?A` to be `&'static u32` . #[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, TyEncodable, TyDecodable)] . #[derive(HashStable, TypeFoldable, Lift)] . pub struct UserSelfTy<'tcx> { . pub impl_def_id: DefId, 1,296 ( 0.00%) pub self_ty: Ty<'tcx>, . } 18,932,550 ( 0.33%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/combine.rs -------------------------------------------------------------------------------- Ir -- line 56 ---------------------------------------- . #[derive(Copy, Clone, Debug)] . pub enum RelationDir { . SubtypeOf, . SupertypeOf, . EqTo, . } . . impl<'infcx, 'tcx> InferCtxt<'infcx, 'tcx> { 2,731,176 ( 0.05%) pub fn super_combine_tys( . &self, . relation: &mut R, . a: Ty<'tcx>, . b: Ty<'tcx>, . ) -> RelateResult<'tcx, Ty<'tcx>> . where . R: TypeRelation<'tcx>, . { . let a_is_expected = relation.a_is_expected(); . 2,201,160 ( 0.04%) match (a.kind(), b.kind()) { . // Relate integral variables to other types . (&ty::Infer(ty::IntVar(a_id)), &ty::Infer(ty::IntVar(b_id))) => { . self.inner . .borrow_mut() . .int_unification_table() . .unify_var_var(a_id, b_id) . .map_err(|e| int_unification_error(a_is_expected, e))?; . Ok(a) . } 30 ( 0.00%) (&ty::Infer(ty::IntVar(v_id)), &ty::Int(v)) => { 60 ( 0.00%) self.unify_integral_variable(a_is_expected, v_id, IntType(v)) . } . (&ty::Int(v), &ty::Infer(ty::IntVar(v_id))) => { . self.unify_integral_variable(!a_is_expected, v_id, IntType(v)) . } 34 ( 0.00%) (&ty::Infer(ty::IntVar(v_id)), &ty::Uint(v)) => { 68 ( 0.00%) self.unify_integral_variable(a_is_expected, v_id, UintType(v)) . } 2 ( 0.00%) (&ty::Uint(v), &ty::Infer(ty::IntVar(v_id))) => { 4 ( 0.00%) self.unify_integral_variable(!a_is_expected, v_id, UintType(v)) . } . . // Relate floating-point variables to other types . (&ty::Infer(ty::FloatVar(a_id)), &ty::Infer(ty::FloatVar(b_id))) => { . self.inner . .borrow_mut() . .float_unification_table() . .unify_var_var(a_id, b_id) . .map_err(|e| float_unification_error(relation.a_is_expected(), e))?; . Ok(a) . } 8 ( 0.00%) (&ty::Infer(ty::FloatVar(v_id)), &ty::Float(v)) => { 8 ( 0.00%) self.unify_float_variable(a_is_expected, v_id, v) . } . (&ty::Float(v), &ty::Infer(ty::FloatVar(v_id))) => { . self.unify_float_variable(!a_is_expected, v_id, v) . } . . // All other cases of inference are errors . (&ty::Infer(_), _) | (_, &ty::Infer(_)) => { 1,050 ( 0.00%) Err(TypeError::Sorts(ty::relate::expected_found(relation, a, b))) . } . 1,931,280 ( 0.03%) _ => ty::relate::super_relate_tys(relation, a, b), . } 2,731,176 ( 0.05%) } . 4,908 ( 0.00%) pub fn super_combine_consts( . &self, . relation: &mut R, . a: &'tcx ty::Const<'tcx>, . b: &'tcx ty::Const<'tcx>, . ) -> RelateResult<'tcx, &'tcx ty::Const<'tcx>> . where . R: ConstEquateRelation<'tcx>, . { . debug!("{}.consts({:?}, {:?})", relation.tag(), a, b); 2,875 ( 0.00%) if a == b { . return Ok(a); . } . 1,170 ( 0.00%) let a = replace_if_possible(&mut self.inner.borrow_mut().const_unification_table(), a); 1,170 ( 0.00%) let b = replace_if_possible(&mut self.inner.borrow_mut().const_unification_table(), b); . . let a_is_expected = relation.a_is_expected(); . 3,940 ( 0.00%) match (a.val, b.val) { . ( . ty::ConstKind::Infer(InferConst::Var(a_vid)), . ty::ConstKind::Infer(InferConst::Var(b_vid)), . ) => { 30 ( 0.00%) self.inner . .borrow_mut() . .const_unification_table() . .unify_var_var(a_vid, b_vid) . .map_err(|e| const_unification_error(a_is_expected, e))?; . return Ok(a); . } . . // All other cases of inference with other variables are errors. . (ty::ConstKind::Infer(InferConst::Var(_)), ty::ConstKind::Infer(_)) . | (ty::ConstKind::Infer(_), ty::ConstKind::Infer(InferConst::Var(_))) => { . bug!("tried to combine ConstKind::Infer/ConstKind::Infer(InferConst::Var)") . } . . (ty::ConstKind::Infer(InferConst::Var(vid)), _) => { 63 ( 0.00%) return self.unify_const_variable(relation.param_env(), vid, b, a_is_expected); . } . . (_, ty::ConstKind::Infer(InferConst::Var(vid))) => { 1,860 ( 0.00%) return self.unify_const_variable(relation.param_env(), vid, a, !a_is_expected); . } . (ty::ConstKind::Unevaluated(..), _) if self.tcx.lazy_normalization() => { . // FIXME(#59490): Need to remove the leak check to accommodate . // escaping bound variables here. . if !a.has_escaping_bound_vars() && !b.has_escaping_bound_vars() { . relation.const_equate_obligation(a, b); . } . return Ok(b); -- line 174 ---------------------------------------- -- line 179 ---------------------------------------- . if !a.has_escaping_bound_vars() && !b.has_escaping_bound_vars() { . relation.const_equate_obligation(a, b); . } . return Ok(a); . } . _ => {} . } . 20 ( 0.00%) ty::relate::super_relate_consts(relation, a, b) 3,681 ( 0.00%) } . . /// Unifies the const variable `target_vid` with the given constant. . /// . /// This also tests if the given const `ct` contains an inference variable which was previously . /// unioned with `target_vid`. If this is the case, inferring `target_vid` to `ct` . /// would result in an infinite type as we continuously replace an inference variable . /// in `ct` with `ct` itself. . /// -- line 196 ---------------------------------------- -- line 216 ---------------------------------------- . /// of `fn bind` (meaning that its substs contain `N`). . /// . /// `bind(arr)` now infers that the type of `arr` must be `[u8; N]`. . /// The assignment `arr = bind(arr)` now tries to equate `N` with `3 + 4`. . /// . /// As `3 + 4` contains `N` in its substs, this must not succeed. . /// . /// See `src/test/ui/const-generics/occurs-check/` for more examples where this is relevant. 7,239 ( 0.00%) #[instrument(level = "debug", skip(self))] . fn unify_const_variable( . &self, . param_env: ty::ParamEnv<'tcx>, . target_vid: ty::ConstVid<'tcx>, . ct: &'tcx ty::Const<'tcx>, . vid_is_expected: bool, . ) -> RelateResult<'tcx, &'tcx ty::Const<'tcx>> { . let (for_universe, span) = { . let mut inner = self.inner.borrow_mut(); 1,524 ( 0.00%) let variable_table = &mut inner.const_unification_table(); 762 ( 0.00%) let var_value = variable_table.probe_value(target_vid); 762 ( 0.00%) match var_value.val { . ConstVariableValue::Known { value } => { . bug!("instantiating {:?} which has a known value {:?}", target_vid, value) . } . ConstVariableValue::Unknown { universe } => (universe, var_value.origin.span), . } . }; 3,048 ( 0.00%) let value = ConstInferUnifier { infcx: self, span, param_env, for_universe, target_vid } . .relate(ct, ct)?; . 1,524 ( 0.00%) self.inner . .borrow_mut() . .const_unification_table() . .unify_var_value( . target_vid, 2,286 ( 0.00%) ConstVarValue { . origin: ConstVariableOrigin { . kind: ConstVariableOriginKind::ConstInference, . span: DUMMY_SP, . }, . val: ConstVariableValue::Known { value }, . }, . ) . .map(|()| value) . .map_err(|e| const_unification_error(vid_is_expected, e)) . } . 396 ( 0.00%) fn unify_integral_variable( . &self, . vid_is_expected: bool, . vid: ty::IntVid, . val: ty::IntVarValue, . ) -> RelateResult<'tcx, Ty<'tcx>> { 528 ( 0.00%) self.inner . .borrow_mut() . .int_unification_table() . .unify_var_value(vid, Some(val)) . .map_err(|e| int_unification_error(vid_is_expected, e))?; 132 ( 0.00%) match val { 30 ( 0.00%) IntType(v) => Ok(self.tcx.mk_mach_int(v)), 138 ( 0.00%) UintType(v) => Ok(self.tcx.mk_mach_uint(v)), . } 528 ( 0.00%) } . 20 ( 0.00%) fn unify_float_variable( . &self, . vid_is_expected: bool, . vid: ty::FloatVid, . val: ty::FloatTy, . ) -> RelateResult<'tcx, Ty<'tcx>> { 28 ( 0.00%) self.inner . .borrow_mut() . .float_unification_table() . .unify_var_value(vid, Some(ty::FloatVarValue(val))) . .map_err(|e| float_unification_error(vid_is_expected, e))?; 24 ( 0.00%) Ok(self.tcx.mk_mach_float(val)) 28 ( 0.00%) } . } . . impl<'infcx, 'tcx> CombineFields<'infcx, 'tcx> { . pub fn tcx(&self) -> TyCtxt<'tcx> { 98,772 ( 0.00%) self.infcx.tcx . } . . pub fn equate<'a>(&'a mut self, a_is_expected: bool) -> Equate<'a, 'infcx, 'tcx> { . Equate::new(self, a_is_expected) . } . 1,322,258 ( 0.02%) pub fn sub<'a>(&'a mut self, a_is_expected: bool) -> Sub<'a, 'infcx, 'tcx> { . Sub::new(self, a_is_expected) 661,129 ( 0.01%) } . . pub fn lub<'a>(&'a mut self, a_is_expected: bool) -> Lub<'a, 'infcx, 'tcx> { . Lub::new(self, a_is_expected) . } . 815,260 ( 0.01%) pub fn glb<'a>(&'a mut self, a_is_expected: bool) -> Glb<'a, 'infcx, 'tcx> { . Glb::new(self, a_is_expected) 407,630 ( 0.01%) } . . /// Here, `dir` is either `EqTo`, `SubtypeOf`, or `SupertypeOf`. . /// The idea is that we should ensure that the type `a_ty` is equal . /// to, a subtype of, or a supertype of (respectively) the type . /// to which `b_vid` is bound. . /// . /// Since `b_vid` has not yet been instantiated with a type, we . /// will first instantiate `b_vid` with a *generalized* version . /// of `a_ty`. Generalization introduces other inference . /// variables wherever subtyping could occur. 713,306 ( 0.01%) pub fn instantiate( . &mut self, . a_ty: Ty<'tcx>, . dir: RelationDir, . b_vid: ty::TyVid, . a_is_expected: bool, . ) -> RelateResult<'tcx, ()> { . use self::RelationDir::*; . -- line 333 ---------------------------------------- -- line 342 ---------------------------------------- . // - `a_ty == &'x ?1`, where `'x` is some free region and `?1` is an . // inference variable, . // - and `dir` == `SubtypeOf`. . // . // Then the generalized form `b_ty` would be `&'?2 ?3`, where . // `'?2` and `?3` are fresh region/type inference . // variables. (Down below, we will relate `a_ty <: b_ty`, . // adding constraints like `'x: '?2` and `?1 <: ?3`.) 64,846 ( 0.00%) let Generalization { ty: b_ty, needs_wf } = self.generalize(a_ty, b_vid, dir)?; . debug!( . "instantiate(a_ty={:?}, dir={:?}, b_vid={:?}, generalized b_ty={:?})", . a_ty, dir, b_vid, b_ty . ); 453,922 ( 0.01%) self.infcx.inner.borrow_mut().type_variables().instantiate(b_vid, b_ty); . 64,846 ( 0.00%) if needs_wf { . self.obligations.push(Obligation::new( . self.trace.cause.clone(), . self.param_env, . ty::Binder::dummy(ty::PredicateKind::WellFormed(b_ty.into())) . .to_predicate(self.infcx.tcx), . )); . } . . // Finally, relate `b_ty` to `a_ty`, as described in previous comment. . // . // FIXME(#16847): This code is non-ideal because all these subtype . // relations wind up attributed to the same spans. We need . // to associate causes/spans with each of the relations in . // the stack to get this right. 243,526 ( 0.00%) match dir { 240,745 ( 0.00%) EqTo => self.equate(a_is_expected).relate(a_ty, b_ty), 39,645 ( 0.00%) SubtypeOf => self.sub(a_is_expected).relate(a_ty, b_ty), 17,536 ( 0.00%) SupertypeOf => self.sub(a_is_expected).relate_with_variance( . ty::Contravariant, . ty::VarianceDiagInfo::default(), . a_ty, . b_ty, . ), . }?; . 64,846 ( 0.00%) Ok(()) 518,768 ( 0.01%) } . . /// Attempts to generalize `ty` for the type variable `for_vid`. . /// This checks for cycle -- that is, whether the type `ty` . /// references `for_vid`. The `dir` is the "direction" for which we . /// a performing the generalization (i.e., are we producing a type . /// that can be used as a supertype etc). . /// . /// Preconditions: -- line 392 ---------------------------------------- -- line 401 ---------------------------------------- . debug!("generalize(ty={:?}, for_vid={:?}, dir={:?}", ty, for_vid, dir); . // Determine the ambient variance within which `ty` appears. . // The surrounding equation is: . // . // ty [op] ty2 . // . // where `op` is either `==`, `<:`, or `:>`. This maps quite . // naturally. 259,384 ( 0.00%) let ambient_variance = match dir { . RelationDir::EqTo => ty::Invariant, . RelationDir::SubtypeOf => ty::Covariant, . RelationDir::SupertypeOf => ty::Contravariant, . }; . . debug!("generalize: ambient_variance = {:?}", ambient_variance); . 648,460 ( 0.01%) let for_universe = match self.infcx.inner.borrow_mut().type_variables().probe(for_vid) { . v @ TypeVariableValue::Known { .. } => { . bug!("instantiating {:?} which has a known value {:?}", for_vid, v,) . } . TypeVariableValue::Unknown { universe } => universe, . }; . . debug!("generalize: for_universe = {:?}", for_universe); . debug!("generalize: trace = {:?}", self.trace); . 648,460 ( 0.01%) let mut generalize = Generalizer { . infcx: self.infcx, . cause: &self.trace.cause, . for_vid_sub_root: self.infcx.inner.borrow_mut().type_variables().sub_root_var(for_vid), . for_universe, . ambient_variance, . needs_wf: false, . root_ty: ty, 64,846 ( 0.00%) param_env: self.param_env, . cache: SsoHashMap::new(), . }; . 129,692 ( 0.00%) let ty = match generalize.relate(ty, ty) { 64,846 ( 0.00%) Ok(ty) => ty, . Err(e) => { . debug!("generalize: failure {:?}", e); . return Err(e); . } . }; 64,846 ( 0.00%) let needs_wf = generalize.needs_wf; . debug!("generalize: success {{ {:?}, {:?} }}", ty, needs_wf); . Ok(Generalization { ty, needs_wf }) . } . . pub fn add_const_equate_obligation( . &mut self, . a_is_expected: bool, . a: &'tcx ty::Const<'tcx>, -- line 454 ---------------------------------------- -- line 528 ---------------------------------------- . /// will force the calling code to check that `WF(Foo)` . /// holds, which in turn implies that `?C::Item == ?D`. So once . /// `?C` is constrained, that should suffice to restrict `?D`. . needs_wf: bool, . } . . impl<'tcx> TypeRelation<'tcx> for Generalizer<'_, 'tcx> { . fn tcx(&self) -> TyCtxt<'tcx> { 153,499 ( 0.00%) self.infcx.tcx . } . fn param_env(&self) -> ty::ParamEnv<'tcx> { 697 ( 0.00%) self.param_env . } . . fn tag(&self) -> &'static str { . "Generalizer" . } . . fn a_is_expected(&self) -> bool { . true . } . 7,682 ( 0.00%) fn binders( . &mut self, . a: ty::Binder<'tcx, T>, . b: ty::Binder<'tcx, T>, . ) -> RelateResult<'tcx, ty::Binder<'tcx, T>> . where . T: Relate<'tcx>, . { 12,182 ( 0.00%) Ok(a.rebind(self.relate(a.skip_binder(), b.skip_binder())?)) 7,682 ( 0.00%) } . 427,130 ( 0.01%) fn relate_item_substs( . &mut self, . item_def_id: DefId, . a_subst: SubstsRef<'tcx>, . b_subst: SubstsRef<'tcx>, . ) -> RelateResult<'tcx, SubstsRef<'tcx>> { 38,830 ( 0.00%) if self.ambient_variance == ty::Variance::Invariant { . // Avoid fetching the variance if we are in an invariant . // context; no need, and it can induce dependency cycles . // (e.g., #41849). 25,112 ( 0.00%) relate::relate_substs(self, None, a_subst, b_subst) . } else { . let tcx = self.tcx(); . let opt_variances = tcx.variances_of(item_def_id); 68,590 ( 0.00%) relate::relate_substs(self, Some((item_def_id, &opt_variances)), a_subst, b_subst) . } 349,470 ( 0.01%) } . 28,908 ( 0.00%) fn relate_with_variance>( . &mut self, . variance: ty::Variance, . _info: ty::VarianceDiagInfo<'tcx>, . a: T, . b: T, . ) -> RelateResult<'tcx, T> { . let old_ambient_variance = self.ambient_variance; 549,747 ( 0.01%) self.ambient_variance = self.ambient_variance.xform(variance); . . let result = self.relate(a, b); 105,485 ( 0.00%) self.ambient_variance = old_ambient_variance; . result 22,484 ( 0.00%) } . 1,566,927 ( 0.03%) fn tys(&mut self, t: Ty<'tcx>, t2: Ty<'tcx>) -> RelateResult<'tcx, Ty<'tcx>> { 174,103 ( 0.00%) assert_eq!(t, t2); // we are abusing TypeRelation here; both LHS and RHS ought to be == . 1,044,618 ( 0.02%) if let Some(result) = self.cache.get(&t) { 22,672 ( 0.00%) return result.clone(); . } . debug!("generalize: t={:?}", t); . . // Check to see whether the type we are generalizing references . // any other type variable related to `vid` via . // subtyping. This is basically our "occurs check", preventing . // us from creating infinitely sized types. 540,275 ( 0.01%) let result = match *t.kind() { 5,817 ( 0.00%) ty::Infer(ty::TyVar(vid)) => { 5,817 ( 0.00%) let vid = self.infcx.inner.borrow_mut().type_variables().root_var(vid); 5,817 ( 0.00%) let sub_vid = self.infcx.inner.borrow_mut().type_variables().sub_root_var(vid); 5,817 ( 0.00%) if sub_vid == self.for_vid_sub_root { . // If sub-roots are equal, then `for_vid` and . // `vid` are related via subtyping. . Err(TypeError::CyclicTy(self.root_ty)) . } else { 34,902 ( 0.00%) let probe = self.infcx.inner.borrow_mut().type_variables().probe(vid); 11,634 ( 0.00%) match probe { . TypeVariableValue::Known { value: u } => { . debug!("generalize: known value {:?}", u); . self.relate(u, u) . } . TypeVariableValue::Unknown { universe } => { 25,010 ( 0.00%) match self.ambient_variance { . // Invariant: no need to make a fresh type variable. . ty::Invariant => { 10,760 ( 0.00%) if self.for_universe.can_name(universe) { 8,608 ( 0.00%) return Ok(t); . } . } . . // Bivariant: make a fresh var, but we . // may need a WF predicate. See . // comment on `needs_wf` field for . // more info. . ty::Bivariant => self.needs_wf = true, . . // Co/contravariant: this will be . // sufficiently constrained later on. . ty::Covariant | ty::Contravariant => (), . } . . let origin = 25,650 ( 0.00%) *self.infcx.inner.borrow_mut().type_variables().var_origin(vid); 19,950 ( 0.00%) let new_var_id = self . .infcx . .inner . .borrow_mut() . .type_variables() 19,950 ( 0.00%) .new_var(self.for_universe, origin); . let u = self.tcx().mk_ty_var(new_var_id); . . // Record that we replaced `vid` with `new_var_id` as part of a generalization . // operation. This is needed to detect cyclic types. To see why, see the . // docs in the `type_variables` module. 14,250 ( 0.00%) self.infcx.inner.borrow_mut().type_variables().sub(vid, new_var_id); . debug!("generalize: replacing original vid={:?} with new={:?}", vid, u); 5,700 ( 0.00%) Ok(u) . } . } . } . } . ty::Infer(ty::IntVar(_) | ty::FloatVar(_)) => { . // No matter what mode we are in, . // integer/floating-point types must be equal to be . // relatable. 17 ( 0.00%) Ok(t) . } 487,803 ( 0.01%) _ => relate::super_relate_tys(self, t, t), . }; . 1,662,830 ( 0.03%) self.cache.insert(t, result.clone()); 997,698 ( 0.02%) return result; 1,566,927 ( 0.03%) } . 168,200 ( 0.00%) fn regions( . &mut self, . r: ty::Region<'tcx>, . r2: ty::Region<'tcx>, . ) -> RelateResult<'tcx, ty::Region<'tcx>> { 19,293 ( 0.00%) assert_eq!(r, r2); // we are abusing TypeRelation here; both LHS and RHS ought to be == . . debug!("generalize: regions r={:?}", r); . 38,586 ( 0.00%) match *r { . // Never make variables for regions bound within the type itself, . // nor for erased regions. . ty::ReLateBound(..) | ty::ReErased => { . return Ok(r); . } . . ty::RePlaceholder(..) . | ty::ReVar(..) -- line 691 ---------------------------------------- -- line 697 ---------------------------------------- . } . } . . // If we are in an invariant context, we can re-use the region . // as is, unless it happens to be in some universe that we . // can't name. (In the case of a region *variable*, we could . // use it if we promoted it into our universe, but we don't . // bother.) 38,822 ( 0.00%) if let ty::Invariant = self.ambient_variance { 50,031 ( 0.00%) let r_universe = self.infcx.universe_of_region(r); 116,739 ( 0.00%) if self.for_universe.can_name(r_universe) { . return Ok(r); . } . } . . // FIXME: This is non-ideal because we don't give a . // very descriptive origin for this region variable. 27,340 ( 0.00%) Ok(self.infcx.next_region_var_in_universe(MiscVariable(self.cause.span), self.for_universe)) 168,200 ( 0.00%) } . 6,840 ( 0.00%) fn consts( . &mut self, . c: &'tcx ty::Const<'tcx>, . c2: &'tcx ty::Const<'tcx>, . ) -> RelateResult<'tcx, &'tcx ty::Const<'tcx>> { 2,091 ( 0.00%) assert_eq!(c, c2); // we are abusing TypeRelation here; both LHS and RHS ought to be == . . match c.val { . ty::ConstKind::Infer(InferConst::Var(vid)) => { 63 ( 0.00%) let mut inner = self.infcx.inner.borrow_mut(); 252 ( 0.00%) let variable_table = &mut inner.const_unification_table(); 63 ( 0.00%) let var_value = variable_table.probe_value(vid); 126 ( 0.00%) match var_value.val { . ConstVariableValue::Known { value: u } => { . drop(inner); . self.relate(u, u) . } 63 ( 0.00%) ConstVariableValue::Unknown { universe } => { 315 ( 0.00%) if self.for_universe.can_name(universe) { . Ok(c) . } else { . let new_var_id = variable_table.new_key(ConstVarValue { . origin: var_value.origin, . val: ConstVariableValue::Unknown { universe: self.for_universe }, . }); . Ok(self.tcx().mk_const_var(new_var_id, c.ty)) . } -- line 743 ---------------------------------------- -- line 754 ---------------------------------------- . substs, . substs, . )?; . Ok(self.tcx().mk_const(ty::Const { . ty: c.ty, . val: ty::ConstKind::Unevaluated(ty::Unevaluated { def, substs, promoted }), . })) . } 3,485 ( 0.00%) _ => relate::super_relate_consts(self, c, c), . } 6,840 ( 0.00%) } . } . . pub trait ConstEquateRelation<'tcx>: TypeRelation<'tcx> { . /// Register an obligation that both constants must be equal to each other. . /// . /// If they aren't equal then the relation doesn't hold. . fn const_equate_obligation(&mut self, a: &'tcx ty::Const<'tcx>, b: &'tcx ty::Const<'tcx>); . } -- line 772 ---------------------------------------- -- line 824 ---------------------------------------- . target_vid: ty::ConstVid<'tcx>, . } . . // We use `TypeRelation` here to propagate `RelateResult` upwards. . // . // Both inputs are expected to be the same. . impl<'tcx> TypeRelation<'tcx> for ConstInferUnifier<'_, 'tcx> { . fn tcx(&self) -> TyCtxt<'tcx> { 1,143 ( 0.00%) self.infcx.tcx . } . . fn param_env(&self) -> ty::ParamEnv<'tcx> { 381 ( 0.00%) self.param_env . } . . fn tag(&self) -> &'static str { . "ConstInferUnifier" . } . . fn a_is_expected(&self) -> bool { . true -- line 844 ---------------------------------------- -- line 937 ---------------------------------------- . return Ok(r); . } else { . // FIXME: This is non-ideal because we don't give a . // very descriptive origin for this region variable. . Ok(self.infcx.next_region_var_in_universe(MiscVariable(self.span), self.for_universe)) . } . } . 7,239 ( 0.00%) #[tracing::instrument(level = "debug", skip(self))] . fn consts( . &mut self, . c: &'tcx ty::Const<'tcx>, . _c: &'tcx ty::Const<'tcx>, . ) -> RelateResult<'tcx, &'tcx ty::Const<'tcx>> { . debug_assert_eq!(c, _c); . debug!("ConstInferUnifier: c={:?}", c); . 1,905 ( 0.00%) match c.val { . ty::ConstKind::Infer(InferConst::Var(vid)) => { . // Check if the current unification would end up . // unifying `target_vid` with a const which contains . // an inference variable which is unioned with `target_vid`. . // . // Not doing so can easily result in stack overflows. . if self . .infcx -- line 962 ---------------------------------------- -- line 1000 ---------------------------------------- . substs, . substs, . )?; . Ok(self.tcx().mk_const(ty::Const { . ty: c.ty, . val: ty::ConstKind::Unevaluated(ty::Unevaluated { def, substs, promoted }), . })) . } 1,905 ( 0.00%) _ => relate::super_relate_consts(self, c, c), . } . } . } 1,954,928 ( 0.03%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_parse/src/parser/mod.rs -------------------------------------------------------------------------------- Ir -- line 36 ---------------------------------------- . use rustc_session::parse::ParseSess; . use rustc_span::source_map::{MultiSpan, Span, DUMMY_SP}; . use rustc_span::symbol::{kw, sym, Ident, Symbol}; . use tracing::debug; . . use std::ops::Range; . use std::{cmp, mem, slice}; . 15,345 ( 0.00%) bitflags::bitflags! { . struct Restrictions: u8 { . const STMT_EXPR = 1 << 0; . const NO_STRUCT_LITERAL = 1 << 1; . const CONST_EXPR = 1 << 2; . } . } . . #[derive(Clone, Copy, PartialEq, Debug)] -- line 52 ---------------------------------------- -- line 104 ---------------------------------------- . $self.bump(); . return $self.maybe_recover_from_bad_qpath_stage_2($self.prev_token.span, ty); . } . } . } . }; . } . 84,213 ( 0.00%) #[derive(Clone)] . pub struct Parser<'a> { 2,187 ( 0.00%) pub sess: &'a ParseSess, . /// The current token. 1,230 ( 0.00%) pub token: Token, . /// The spacing for the current token 1,293 ( 0.00%) pub token_spacing: Spacing, . /// The previous token. 1,845 ( 0.00%) pub prev_token: Token, 1,971 ( 0.00%) pub capture_cfg: bool, 4,620 ( 0.00%) restrictions: Restrictions, 2,586 ( 0.00%) expected_tokens: Vec, . // Important: This must only be advanced from `next_tok` . // to ensure that `token_cursor.num_next_calls` is updated properly . token_cursor: TokenCursor, 2,586 ( 0.00%) desugar_doc_comments: bool, . /// This field is used to keep track of how many left angle brackets we have seen. This is . /// required in order to detect extra leading left angle brackets (`<` characters) and error . /// appropriately. . /// . /// See the comments in the `parse_path_segment` function for more details. 2,586 ( 0.00%) unmatched_angle_bracket_count: u32, 3,879 ( 0.00%) max_angle_bracket_count: u32, . /// A list of all unclosed delimiters found by the lexer. If an entry is used for error recovery . /// it gets removed from here. Every entry left at the end gets emitted as an independent . /// error. 1,293 ( 0.00%) pub(super) unclosed_delims: Vec, . last_unexpected_token_span: Option, . /// Span pointing at the `:` for the last type ascription the parser has seen, and whether it . /// looked like it could have been a mistyped path or literal `Option:Some(42)`). . pub last_type_ascription: Option<(Span, bool /* likely path typo */)>, . /// If present, this `Parser` is not parsing Rust code but rather a macro call. . subparser_name: Option<&'static str>, . capture_state: CaptureState, . /// This allows us to recover when the user forget to add braces around -- line 146 ---------------------------------------- -- line 173 ---------------------------------------- . /// the first macro inner attribute to invoke a proc-macro). . /// When create a `TokenStream`, the inner attributes get inserted . /// into the proper place in the token stream. . pub type ReplaceRange = (Range, Vec<(FlatToken, Spacing)>); . . /// Controls how we capture tokens. Capturing can be expensive, . /// so we try to avoid performing capturing in cases where . /// we will never need an `AttrAnnotatedTokenStream` 1,293 ( 0.00%) #[derive(Copy, Clone)] . pub enum Capturing { . /// We aren't performing any capturing - this is the default mode. . No, . /// We are capturing tokens . Yes, . } . 5,451 ( 0.00%) #[derive(Clone)] . struct CaptureState { 5,172 ( 0.00%) capturing: Capturing, 1,293 ( 0.00%) replace_ranges: Vec, . inner_attr_ranges: FxHashMap, . } . . impl<'a> Drop for Parser<'a> { . fn drop(&mut self) { 7,369 ( 0.00%) emit_unclosed_delims(&mut self.unclosed_delims, &self.sess); . } . } . 171,962 ( 0.00%) #[derive(Clone)] . struct TokenCursor { . frame: TokenCursorFrame, 38,877 ( 0.00%) stack: Vec, . desugar_doc_comments: bool, . // Counts the number of calls to `next` or `next_desugared`, . // depending on whether `desugar_doc_comments` is set. 12,464 ( 0.00%) num_next_calls: usize, . // During parsing, we may sometimes need to 'unglue' a . // glued token into two component tokens . // (e.g. '>>' into '>' and '>), so that the parser . // can consume them one at a time. This process . // bypasses the normal capturing mechanism . // (e.g. `num_next_calls` will not be incremented), . // since the 'unglued' tokens due not exist in . // the original `TokenStream`. -- line 217 ---------------------------------------- -- line 226 ---------------------------------------- . // in `Option>` requires us to unglue . // the trailing `>>` token. The `break_last_token` . // field is used to track this token - it gets . // appended to the captured stream when . // we evaluate a `LazyTokenStream` . break_last_token: bool, . } . 77,050 ( 0.00%) #[derive(Clone)] . struct TokenCursorFrame { 20,705 ( 0.00%) delim: token::DelimToken, . span: DelimSpan, . open_delim: bool, 41,410 ( 0.00%) tree_cursor: tokenstream::Cursor, . close_delim: bool, . } . . impl TokenCursorFrame { . fn new(span: DelimSpan, delim: DelimToken, tts: TokenStream) -> Self { 4,350 ( 0.00%) TokenCursorFrame { . delim, . span, . open_delim: false, 10,460 ( 0.00%) tree_cursor: tts.into_trees(), . close_delim: false, . } . } . } . . impl TokenCursor { 1,356,576 ( 0.02%) fn next(&mut self) -> (Token, Spacing) { . loop { 625,766 ( 0.01%) let (tree, spacing) = if !self.frame.open_delim { 8,698 ( 0.00%) self.frame.open_delim = true; 43,490 ( 0.00%) TokenTree::open_tt(self.frame.span, self.frame.delim).into() 1,330,521 ( 0.02%) } else if let Some(tree) = self.frame.tree_cursor.next_with_spacing() { . tree 36,762 ( 0.00%) } else if !self.frame.close_delim { 8,589 ( 0.00%) self.frame.close_delim = true; 42,945 ( 0.00%) TokenTree::close_tt(self.frame.span, self.frame.delim).into() 17,146 ( 0.00%) } else if let Some(frame) = self.stack.pop() { 111,449 ( 0.00%) self.frame = frame; . continue; . } else { 21,942 ( 0.00%) (TokenTree::Token(Token::new(token::Eof, DUMMY_SP)), Spacing::Alone) . }; . 243,448 ( 0.00%) match tree { . TokenTree::Token(token) => { 904,384 ( 0.02%) return (token, spacing); . } . TokenTree::Delimited(sp, delim, tts) => { . let frame = TokenCursorFrame::new(sp, delim, tts); . self.stack.push(mem::replace(&mut self.frame, frame)); . } . } . } 904,384 ( 0.02%) } . 126,290 ( 0.00%) fn next_desugared(&mut self) -> (Token, Spacing) { 37,931 ( 0.00%) let (data, attr_style, sp) = match self.next() { 66 ( 0.00%) (Token { kind: token::DocComment(_, attr_style, data), span }, _) => { . (data, attr_style, span) . } 63,035 ( 0.00%) tok => return tok, . }; . . // Searches for the occurrences of `"#*` and returns the minimum number of `#`s . // required to wrap the text. . let mut num_of_hashes = 0; . let mut count = 0; 3,964 ( 0.00%) for ch in data.as_str().chars() { . count = match ch { . '"' => 1, . '#' if count > 0 => count + 1, . _ => 0, . }; . num_of_hashes = cmp::max(num_of_hashes, count); . } . 88 ( 0.00%) let delim_span = DelimSpan::from_single(sp); 110 ( 0.00%) let body = TokenTree::Delimited( . delim_span, . token::Bracket, 264 ( 0.00%) [ 154 ( 0.00%) TokenTree::token(token::Ident(sym::doc, false), sp), 88 ( 0.00%) TokenTree::token(token::Eq, sp), 176 ( 0.00%) TokenTree::token(TokenKind::lit(token::StrRaw(num_of_hashes), data, None), sp), . ] . .iter() . .cloned() . .collect::(), 22 ( 0.00%) ); . . self.stack.push(mem::replace( . &mut self.frame, . TokenCursorFrame::new( . delim_span, . token::NoDelim, 22 ( 0.00%) if attr_style == AttrStyle::Inner { . [TokenTree::token(token::Pound, sp), TokenTree::token(token::Not, sp), body] . .iter() . .cloned() . .collect::() . } else { 264 ( 0.00%) [TokenTree::token(token::Pound, sp), body] . .iter() . .cloned() . .collect::() . }, . ), . )); . 66 ( 0.00%) self.next() 113,661 ( 0.00%) } . } . 132,940 ( 0.00%) #[derive(Debug, Clone, PartialEq)] . enum TokenType { 106,352 ( 0.00%) Token(TokenKind), . Keyword(Symbol), . Operator, . Lifetime, . Ident, . Path, . Type, . Const, . } -- line 353 ---------------------------------------- -- line 378 ---------------------------------------- . /// The separator token. . sep: Option, . /// `true` if a trailing separator is allowed. . trailing_sep_allowed: bool, . } . . impl SeqSep { . fn trailing_allowed(t: TokenKind) -> SeqSep { 282 ( 0.00%) SeqSep { sep: Some(t), trailing_sep_allowed: true } . } . . fn none() -> SeqSep { . SeqSep { sep: None, trailing_sep_allowed: false } . } . } . . pub enum FollowedByType { . Yes, . No, . } . . fn token_descr_opt(token: &Token) -> Option<&'static str> { 1,046 ( 0.00%) Some(match token.kind { 2,092 ( 0.00%) _ if token.is_special_ident() => "reserved identifier", 2,092 ( 0.00%) _ if token.is_used_keyword() => "keyword", 2,092 ( 0.00%) _ if token.is_unused_keyword() => "reserved keyword", . token::DocComment(..) => "doc comment", . _ => return None, . }) . } . 3,661 ( 0.00%) pub(super) fn token_descr(token: &Token) -> String { 1,046 ( 0.00%) let token_str = pprust::token_to_string(token); . match token_descr_opt(token) { . Some(prefix) => format!("{} `{}`", prefix, token_str), 3,661 ( 0.00%) _ => format!("`{}`", token_str), . } 2,615 ( 0.00%) } . . impl<'a> Parser<'a> { 12,180 ( 0.00%) pub fn new( . sess: &'a ParseSess, . tokens: TokenStream, . desugar_doc_comments: bool, . subparser_name: Option<&'static str>, . ) -> Self { 870 ( 0.00%) let mut start_frame = TokenCursorFrame::new(DelimSpan::dummy(), token::NoDelim, tokens); 1,740 ( 0.00%) start_frame.open_delim = true; . start_frame.close_delim = true; . 26,970 ( 0.00%) let mut parser = Parser { . sess, 870 ( 0.00%) token: Token::dummy(), . token_spacing: Spacing::Alone, 870 ( 0.00%) prev_token: Token::dummy(), . capture_cfg: false, . restrictions: Restrictions::empty(), . expected_tokens: Vec::new(), . token_cursor: TokenCursor { 5,220 ( 0.00%) frame: start_frame, . stack: Vec::new(), . num_next_calls: 0, . desugar_doc_comments, . break_last_token: false, . }, . desugar_doc_comments, . unmatched_angle_bracket_count: 0, . max_angle_bracket_count: 0, -- line 445 ---------------------------------------- -- line 451 ---------------------------------------- . capturing: Capturing::No, . replace_ranges: Vec::new(), . inner_attr_ranges: Default::default(), . }, . current_closure: None, . }; . . // Make parser point to the first token. 1,740 ( 0.00%) parser.bump(); . . parser 7,830 ( 0.00%) } . . fn next_tok(&mut self, fallback_span: Span) -> (Token, Spacing) { . loop { 630,924 ( 0.01%) let (mut next, spacing) = if self.desugar_doc_comments { 50,516 ( 0.00%) self.token_cursor.next_desugared() . } else { 277,575 ( 0.00%) self.token_cursor.next() . }; 420,616 ( 0.01%) self.token_cursor.num_next_calls += 1; . // We've retrieved an token from the underlying . // cursor, so we no longer need to worry about . // an unglued token. See `break_and_eat` for more details 105,154 ( 0.00%) self.token_cursor.break_last_token = false; 420,616 ( 0.01%) if next.span.is_dummy() { . // Tweak the location for better diagnostics, but keep syntactic context intact. 3,556 ( 0.00%) next.span = fallback_span.with_ctxt(next.span.ctxt()); . } 341,022 ( 0.01%) if matches!( 210,308 ( 0.00%) next.kind, . token::OpenDelim(token::NoDelim) | token::CloseDelim(token::NoDelim) . ) { . continue; . } 420,440 ( 0.01%) return (next, spacing); . } . } . . pub fn unexpected(&mut self) -> PResult<'a, T> { . match self.expect_one_of(&[], &[]) { . Err(e) => Err(e), . // We can get `Ok(true)` from `recover_closing_delimiter` . // which is called in `expected_one_of_not_found`. . Ok(_) => FatalError.raise(), . } . } . . /// Expects and consumes the token `t`. Signals an error if the next token is not `t`. 79,317 ( 0.00%) pub fn expect(&mut self, t: &TokenKind) -> PResult<'a, bool /* recovered */> { 8,813 ( 0.00%) if self.expected_tokens.is_empty() { 6,690 ( 0.00%) if self.token == *t { 5,575 ( 0.00%) self.bump(); . Ok(false) . } else { . self.unexpected_try_recover(t) . } . } else { 92,376 ( 0.00%) self.expect_one_of(slice::from_ref(t), &[]) . } 132,195 ( 0.00%) } . . /// Expect next token to be edible or inedible token. If edible, . /// then consume it; if inedible, then return without consuming . /// anything. Signal a fatal error if next token is unexpected. 108,612 ( 0.00%) pub fn expect_one_of( . &mut self, . edible: &[TokenKind], . inedible: &[TokenKind], . ) -> PResult<'a, bool /* recovered */> { 18,102 ( 0.00%) if edible.contains(&self.token.kind) { 24,399 ( 0.00%) self.bump(); . Ok(false) . } else if inedible.contains(&self.token.kind) { . // leave it in the input . Ok(false) . } else if self.last_unexpected_token_span == Some(self.token.span) { . FatalError.raise(); . } else { . self.expected_one_of_not_found(edible, inedible) . } 135,765 ( 0.00%) } . . // Public for rustfmt usage. . pub fn parse_ident(&mut self) -> PResult<'a, Ident> { 100,810 ( 0.00%) self.parse_ident_common(true) . } . . fn ident_or_err(&mut self) -> PResult<'a, (Ident, /* is_raw */ bool)> { 77,046 ( 0.00%) self.token.ident().ok_or_else(|| match self.prev_token.kind { . TokenKind::DocComment(..) => { . self.span_err(self.prev_token.span, Error::UselessDocComment) . } . _ => self.expected_ident_found(), . }) . } . 179,165 ( 0.00%) fn parse_ident_common(&mut self, recover: bool) -> PResult<'a, Ident> { 25,595 ( 0.00%) let (ident, is_raw) = self.ident_or_err()?; 153,570 ( 0.00%) if !is_raw && ident.is_reserved() { . let mut err = self.expected_ident_found(); . if recover { . err.emit(); . } else { . return Err(err); . } . } 102,380 ( 0.00%) self.bump(); . Ok(ident) 255,950 ( 0.00%) } . . /// Checks if the next token is `tok`, and returns `true` if so. . /// . /// This method will automatically add `tok` to `expected_tokens` if `tok` is not . /// encountered. 1,965,110 ( 0.03%) fn check(&mut self, tok: &TokenKind) -> bool { 898,066 ( 0.02%) let is_present = self.token == *tok; 608,838 ( 0.01%) if !is_present { 1,337,554 ( 0.02%) self.expected_tokens.push(TokenType::Token(tok.clone())); . } . is_present 1,965,110 ( 0.03%) } . . /// Consumes a token 'tok' if it exists. Returns whether the given token was present. 160 ( 0.00%) pub fn eat(&mut self, tok: &TokenKind) -> bool { 444,107 ( 0.01%) let is_present = self.check(tok); 292,650 ( 0.01%) if is_present { 53,425 ( 0.00%) self.bump() . } . is_present 200 ( 0.00%) } . . /// If the next token is the given keyword, returns `true` without eating it. . /// An expectation is also added for diagnostics purposes. 88,135 ( 0.00%) fn check_keyword(&mut self, kw: Symbol) -> bool { 19,756 ( 0.00%) self.expected_tokens.push(TokenType::Keyword(kw)); 667,725 ( 0.01%) self.token.is_keyword(kw) . } . . /// If the next token is the given keyword, eats it and returns `true`. . /// Otherwise, returns `false`. An expectation is also added for diagnostics purposes. . // Public for rustfmt usage. 173,585 ( 0.00%) pub fn eat_keyword(&mut self, kw: Symbol) -> bool { 111,254 ( 0.00%) if self.check_keyword(kw) { 9,079 ( 0.00%) self.bump(); . true . } else { . false . } 173,585 ( 0.00%) } . . fn eat_keyword_noexpect(&mut self, kw: Symbol) -> bool { 58,276 ( 0.00%) if self.token.is_keyword(kw) { 10,348 ( 0.00%) self.bump(); . true . } else { . false . } . } . . /// If the given word is not a keyword, signals an error. . /// If the next token is not the given word, signals an error. . /// Otherwise, eats it. 2,665 ( 0.00%) fn expect_keyword(&mut self, kw: Symbol) -> PResult<'a, ()> { . if !self.eat_keyword(kw) { self.unexpected() } else { Ok(()) } 2,132 ( 0.00%) } . . /// Is the given keyword `kw` followed by a non-reserved identifier? 41,416 ( 0.00%) fn is_kw_followed_by_ident(&self, kw: Symbol) -> bool { 20,708 ( 0.00%) self.token.is_keyword(kw) && self.look_ahead(1, |t| t.is_ident() && !t.is_reserved_ident()) 46,593 ( 0.00%) } . 260,448 ( 0.00%) fn check_or_expected(&mut self, ok: bool, typ: TokenType) -> bool { 89,182 ( 0.00%) if ok { . true . } else { 69,048 ( 0.00%) self.expected_tokens.push(typ); . false . } 260,448 ( 0.00%) } . . fn check_ident(&mut self) -> bool { 34,684 ( 0.00%) self.check_or_expected(self.token.is_ident(), TokenType::Ident) . } . 56,884 ( 0.00%) fn check_path(&mut self) -> bool { 131,752 ( 0.00%) self.check_or_expected(self.token.is_path_start(), TokenType::Path) 71,105 ( 0.00%) } . . fn check_type(&mut self) -> bool { 56,028 ( 0.00%) self.check_or_expected(self.token.can_begin_type(), TokenType::Type) . } . . fn check_const_arg(&mut self) -> bool { 42,192 ( 0.00%) self.check_or_expected(self.token.can_begin_const_arg(), TokenType::Const) . } . 19,170 ( 0.00%) fn check_inline_const(&self, dist: usize) -> bool { 10,650 ( 0.00%) self.is_keyword_ahead(dist, &[kw::Const]) . && self.look_ahead(dist + 1, |t| match t.kind { . token::Interpolated(ref nt) => matches!(**nt, token::NtBlock(..)), . token::OpenDelim(DelimToken::Brace) => true, . _ => false, . }) 19,170 ( 0.00%) } . . /// Checks to see if the next token is either `+` or `+=`. . /// Otherwise returns `false`. . fn check_plus(&mut self) -> bool { 40,356 ( 0.00%) self.check_or_expected( 20,178 ( 0.00%) self.token.is_like_plus(), 20,178 ( 0.00%) TokenType::Token(token::BinOp(token::Plus)), . ) . } . . /// Eats the expected token if it's present possibly breaking . /// compound tokens like multi-character operators in process. . /// Returns `true` if the token was eaten. 307,164 ( 0.01%) fn break_and_eat(&mut self, expected: TokenKind) -> bool { 179,179 ( 0.00%) if self.token.kind == expected { 20,668 ( 0.00%) self.bump(); . return true; . } 76,315 ( 0.00%) match self.token.kind.break_two_token_op() { 794 ( 0.00%) Some((first, second)) if first == expected => { 452 ( 0.00%) let first_span = self.sess.source_map().start_point(self.token.span); 565 ( 0.00%) let second_span = self.token.span.with_lo(first_span.hi()); 1,017 ( 0.00%) self.token = Token::new(first, first_span); . // Keep track of this token - if we end token capturing now, . // we'll want to append this token to the captured stream. . // . // If we consume any additional tokens, then this token . // is not needed (we'll capture the entire 'glued' token), . // and `next_tok` will set this field to `None` 113 ( 0.00%) self.token_cursor.break_last_token = true; . // Use the spacing of the glued token as the spacing . // of the unglued second token. 1,582 ( 0.00%) self.bump_with((Token::new(second, second_span), self.token_spacing)); . true . } . _ => { 45,450 ( 0.00%) self.expected_tokens.push(TokenType::Token(expected)); . false . } . } 290,974 ( 0.01%) } . . /// Eats `+` possibly breaking tokens like `+=` in process. . fn eat_plus(&mut self) -> bool { 6,124 ( 0.00%) self.break_and_eat(token::BinOp(token::Plus)) . } . . /// Eats `&` possibly breaking tokens like `&&` in process. . /// Signals an error if `&` is not eaten. . fn expect_and(&mut self) -> PResult<'a, ()> { 5,082 ( 0.00%) if self.break_and_eat(token::BinOp(token::And)) { Ok(()) } else { self.unexpected() } . } . . /// Eats `|` possibly breaking tokens like `||` in process. . /// Signals an error if `|` was not eaten. . fn expect_or(&mut self) -> PResult<'a, ()> { 564 ( 0.00%) if self.break_and_eat(token::BinOp(token::Or)) { Ok(()) } else { self.unexpected() } . } . . /// Eats `<` possibly breaking tokens like `<<` in process. 21,178 ( 0.00%) fn eat_lt(&mut self) -> bool { 60,231 ( 0.00%) let ate = self.break_and_eat(token::Lt); 40,544 ( 0.00%) if ate { . // See doc comment for `unmatched_angle_bracket_count`. 18,928 ( 0.00%) self.unmatched_angle_bracket_count += 1; 19,954 ( 0.00%) self.max_angle_bracket_count += 1; . debug!("eat_lt: (increment) count={:?}", self.unmatched_angle_bracket_count); . } . ate 21,178 ( 0.00%) } . . /// Eats `<` possibly breaking tokens like `<<` in process. . /// Signals an error if `<` was not eaten. . fn expect_lt(&mut self) -> PResult<'a, ()> { . if self.eat_lt() { Ok(()) } else { self.unexpected() } . } . . /// Eats `>` possibly breaking tokens like `>>` in process. . /// Signals an error if `>` was not eaten. . fn expect_gt(&mut self) -> PResult<'a, ()> { 28,224 ( 0.00%) if self.break_and_eat(token::Gt) { . // See doc comment for `unmatched_angle_bracket_count`. 14,112 ( 0.00%) if self.unmatched_angle_bracket_count > 0 { 9,408 ( 0.00%) self.unmatched_angle_bracket_count -= 1; . debug!("expect_gt: (decrement) count={:?}", self.unmatched_angle_bracket_count); . } . Ok(()) . } else { . self.unexpected() . } . } . . fn expect_any_with_type(&mut self, kets: &[&TokenKind], expect: TokenExpectType) -> bool { . kets.iter().any(|k| match expect { 31,473 ( 0.00%) TokenExpectType::Expect => self.check(k), 1,410 ( 0.00%) TokenExpectType::NoExpect => self.token == **k, . }) . } . . fn parse_seq_to_before_tokens( . &mut self, . kets: &[&TokenKind], . sep: SeqSep, . expect: TokenExpectType, -- line 759 ---------------------------------------- -- line 761 ---------------------------------------- . ) -> PResult<'a, (Vec, bool /* trailing */, bool /* recovered */)> { . let mut first = true; . let mut recovered = false; . let mut trailing = false; . let mut v = vec![]; . let unclosed_delims = !self.unclosed_delims.is_empty(); . . while !self.expect_any_with_type(kets, expect) { 32,793 ( 0.00%) if let token::CloseDelim(..) | token::Eof = self.token.kind { . break; . } 21,835 ( 0.00%) if let Some(ref t) = sep.sep { 23,452 ( 0.00%) if first { . first = false; . } else { 17,549 ( 0.00%) match self.expect(t) { . Ok(false) => { . self.current_closure.take(); . } . Ok(true) => { . self.current_closure.take(); . recovered = true; . break; . } -- line 784 ---------------------------------------- -- line 857 ---------------------------------------- . e.cancel(); . break; . } . } . } . } . } . } 11,510 ( 0.00%) if sep.trailing_sep_allowed && self.expect_any_with_type(kets, expect) { . trailing = true; . break; . } . 7,470 ( 0.00%) let t = f(self)?; 5,348 ( 0.00%) v.push(t); . } . 15,820 ( 0.00%) Ok((v, trailing, recovered)) . } . . fn recover_missing_braces_around_closure_body( . &mut self, . closure_spans: ClosureSpans, . mut expect_err: DiagnosticBuilder<'_>, . ) -> PResult<'a, ()> { . let initial_semicolon = self.token.span; -- line 882 ---------------------------------------- -- line 937 ---------------------------------------- . /// `f` must consume tokens until reaching the next separator or . /// closing bracket. . fn parse_seq_to_before_end( . &mut self, . ket: &TokenKind, . sep: SeqSep, . f: impl FnMut(&mut Parser<'a>) -> PResult<'a, T>, . ) -> PResult<'a, (Vec, bool, bool)> { 16,633 ( 0.00%) self.parse_seq_to_before_tokens(&[ket], sep, TokenExpectType::Expect, f) . } . . /// Parses a sequence, including the closing delimiter. The function . /// `f` must consume tokens until reaching the next separator or . /// closing bracket. 24,140 ( 0.00%) fn parse_seq_to_end( . &mut self, . ket: &TokenKind, . sep: SeqSep, . f: impl FnMut(&mut Parser<'a>) -> PResult<'a, T>, . ) -> PResult<'a, (Vec, bool /* trailing */)> { 10,245 ( 0.00%) let (val, trailing, recovered) = self.parse_seq_to_before_end(ket, sep, f)?; 5,199 ( 0.00%) if !recovered { . self.eat(ket); . } 26,759 ( 0.00%) Ok((val, trailing)) 19,312 ( 0.00%) } . . /// Parses a sequence, including the closing delimiter. The function . /// `f` must consume tokens until reaching the next separator or . /// closing bracket. . fn parse_unspanned_seq( . &mut self, . bra: &TokenKind, . ket: &TokenKind, . sep: SeqSep, . f: impl FnMut(&mut Parser<'a>) -> PResult<'a, T>, . ) -> PResult<'a, (Vec, bool)> { 9,305 ( 0.00%) self.expect(bra)?; 19,312 ( 0.00%) self.parse_seq_to_end(ket, sep, f) . } . . fn parse_delim_comma_seq( . &mut self, . delim: DelimToken, . f: impl FnMut(&mut Parser<'a>) -> PResult<'a, T>, . ) -> PResult<'a, (Vec, bool)> { . self.parse_unspanned_seq( 3,775 ( 0.00%) &token::OpenDelim(delim), 5,144 ( 0.00%) &token::CloseDelim(delim), . SeqSep::trailing_allowed(token::Comma), . f, . ) . } . . fn parse_paren_comma_seq( . &mut self, . f: impl FnMut(&mut Parser<'a>) -> PResult<'a, T>, . ) -> PResult<'a, (Vec, bool)> { . self.parse_delim_comma_seq(token::Paren, f) . } . . /// Advance the parser by one token using provided token as the next one. 1,367,899 ( 0.02%) fn bump_with(&mut self, (next_token, next_spacing): (Token, Spacing)) { . // Bumping after EOF is a bad sign, usually an infinite loop. 631,338 ( 0.01%) if self.prev_token.kind == TokenKind::Eof { . let msg = "attempted to bump the parser past EOF (may be stuck in a loop)"; . self.span_bug(self.token.span, msg); . } . . // Update the current and previous tokens. 420,892 ( 0.01%) self.prev_token = mem::replace(&mut self.token, next_token); 105,223 ( 0.00%) self.token_spacing = next_spacing; . . // Diagnostics. 105,223 ( 0.00%) self.expected_tokens.clear(); . } . . /// Advance the parser by one token. 840,880 ( 0.01%) pub fn bump(&mut self) { 420,440 ( 0.01%) let next_token = self.next_tok(self.token.span); 630,660 ( 0.01%) self.bump_with(next_token); 840,880 ( 0.01%) } . . /// Look-ahead `dist` tokens of `self.token` and get access to that token there. . /// When `dist == 0` then the current token is looked at. 64 ( 0.00%) pub fn look_ahead(&self, dist: usize, looker: impl FnOnce(&Token) -> R) -> R { 10,240 ( 0.00%) if dist == 0 { 4,436 ( 0.00%) return looker(&self.token); . } . 32,709 ( 0.00%) let frame = &self.token_cursor.frame; 35,529 ( 0.00%) if frame.delim != DelimToken::NoDelim { . let all_normal = (0..dist).all(|i| { 86,761 ( 0.00%) let token = frame.tree_cursor.look_ahead(i); 113,785 ( 0.00%) !matches!(token, Some(TokenTree::Delimited(_, DelimToken::NoDelim, _))) . }); . if all_normal { 143,014 ( 0.00%) return match frame.tree_cursor.look_ahead(dist - 1) { 51,418 ( 0.00%) Some(tree) => match tree { 24,603 ( 0.00%) TokenTree::Token(token) => looker(token), . TokenTree::Delimited(dspan, delim, _) => { 8,955 ( 0.00%) looker(&Token::new(token::OpenDelim(*delim), dspan.open)) . } . }, 21,638 ( 0.00%) None => looker(&Token::new(token::CloseDelim(frame.delim), frame.span.close)), . }; . } . } . . let mut cursor = self.token_cursor.clone(); . let mut i = 0; 6,993 ( 0.00%) let mut token = Token::dummy(); 12,066 ( 0.00%) while i < dist { 56,408 ( 0.00%) token = cursor.next().0; 23,440 ( 0.00%) if matches!( 14,616 ( 0.00%) token.kind, . token::OpenDelim(token::NoDelim) | token::CloseDelim(token::NoDelim) . ) { . continue; . } 6,340 ( 0.00%) i += 1; . } 444 ( 0.00%) return looker(&token); 72 ( 0.00%) } . . /// Returns whether any of the given keywords are `dist` tokens ahead of the current one. 30,366 ( 0.00%) fn is_keyword_ahead(&self, dist: usize, kws: &[Symbol]) -> bool { 9,258 ( 0.00%) self.look_ahead(dist, |t| kws.iter().any(|&kw| t.is_keyword(kw))) 30,366 ( 0.00%) } . . /// Parses asyncness: `async` or nothing. . fn parse_asyncness(&mut self) -> Async { . if self.eat_keyword(kw::Async) { . let span = self.prev_token.uninterpolated_span(); . Async::Yes { span, closure_id: DUMMY_NODE_ID, return_impl_trait_id: DUMMY_NODE_ID } . } else { . Async::No . } . } . . /// Parses unsafety: `unsafe` or nothing. 2,252 ( 0.00%) fn parse_unsafety(&mut self) -> Unsafe { . if self.eat_keyword(kw::Unsafe) { . Unsafe::Yes(self.prev_token.uninterpolated_span()) . } else { . Unsafe::No . } 9,008 ( 0.00%) } . . /// Parses constness: `const` or nothing. 20,384 ( 0.00%) fn parse_constness(&mut self) -> Const { . // Avoid const blocks to be parsed as const items 6,549 ( 0.00%) if self.look_ahead(1, |t| t != &token::OpenDelim(DelimToken::Brace)) . && self.eat_keyword(kw::Const) . { 40 ( 0.00%) Const::Yes(self.prev_token.uninterpolated_span()) . } else { . Const::No . } 35,672 ( 0.00%) } . . /// Parses inline const expressions. . fn parse_const_block(&mut self, span: Span, pat: bool) -> PResult<'a, P> { . if pat { . self.sess.gated_spans.gate(sym::inline_const_pat, span); . } else { . self.sess.gated_spans.gate(sym::inline_const, span); . } -- line 1104 ---------------------------------------- -- line 1108 ---------------------------------------- . id: DUMMY_NODE_ID, . value: self.mk_expr(blk.span, ExprKind::Block(blk, None), AttrVec::new()), . }; . let blk_span = anon_const.value.span; . Ok(self.mk_expr(span.to(blk_span), ExprKind::ConstBlock(anon_const), AttrVec::new())) . } . . /// Parses mutability (`mut` or nothing). 4 ( 0.00%) fn parse_mutability(&mut self) -> Mutability { . if self.eat_keyword(kw::Mut) { Mutability::Mut } else { Mutability::Not } 1,698 ( 0.00%) } . . /// Possibly parses mutability (`const` or `mut`). . fn parse_const_or_mut(&mut self) -> Option { . if self.eat_keyword(kw::Mut) { . Some(Mutability::Mut) . } else if self.eat_keyword(kw::Const) { . Some(Mutability::Not) . } else { . None . } . } . . fn parse_field_name(&mut self) -> PResult<'a, Ident> { 166 ( 0.00%) if let token::Literal(token::Lit { kind: token::Integer, symbol, suffix }) = self.token.kind . { . self.expect_no_suffix(self.token.span, "a tuple index", suffix); . self.bump(); . Ok(Ident::new(symbol, self.prev_token.span)) . } else { 249 ( 0.00%) self.parse_ident_common(true) . } . } . . fn parse_mac_args(&mut self) -> PResult<'a, P> { 1,035 ( 0.00%) self.parse_mac_args_common(true).map(P) . } . . fn parse_attr_args(&mut self) -> PResult<'a, MacArgs> { 993 ( 0.00%) self.parse_mac_args_common(false) . } . 6,111 ( 0.00%) fn parse_mac_args_common(&mut self, delimited_only: bool) -> PResult<'a, MacArgs> { 5,432 ( 0.00%) Ok( 4,617 ( 0.00%) if self.check(&token::OpenDelim(DelimToken::Paren)) 918 ( 0.00%) || self.check(&token::OpenDelim(DelimToken::Bracket)) 915 ( 0.00%) || self.check(&token::OpenDelim(DelimToken::Brace)) . { 2,140 ( 0.00%) match self.parse_token_tree() { 2,675 ( 0.00%) TokenTree::Delimited(dspan, delim, tokens) => . // We've confirmed above that there is a delimiter so unwrapping is OK. . { 1,070 ( 0.00%) MacArgs::Delimited(dspan, MacDelimiter::from_token(delim).unwrap(), tokens) . } . _ => unreachable!(), . } 288 ( 0.00%) } else if !delimited_only { . if self.eat(&token::Eq) { 26 ( 0.00%) let eq_span = self.prev_token.span; . . // Collect tokens because they are used during lowering to HIR. 26 ( 0.00%) let expr = self.parse_expr_force_collect()?; 26 ( 0.00%) let span = expr.span; . 130 ( 0.00%) let token_kind = token::Interpolated(Lrc::new(token::NtExpr(expr))); 234 ( 0.00%) MacArgs::Eq(eq_span, Token::new(token_kind, span)) . } else { . MacArgs::Empty . } . } else { . return self.unexpected(); . }, . ) 4,753 ( 0.00%) } . . fn parse_or_use_outer_attributes( . &mut self, . already_parsed_attrs: Option, . ) -> PResult<'a, AttrWrapper> { 14,095 ( 0.00%) if let Some(attrs) = already_parsed_attrs { . Ok(attrs) . } else { 8,686 ( 0.00%) self.parse_outer_attributes() . } . } . . /// Parses a single token tree from the input. 9,112 ( 0.00%) pub(crate) fn parse_token_tree(&mut self) -> TokenTree { 5,037 ( 0.00%) match self.token.kind { . token::OpenDelim(..) => { . let depth = self.token_cursor.stack.len(); . . // We keep advancing the token cursor until we hit . // the matching `CloseDelim` token. 53,250 ( 0.00%) while !(depth == self.token_cursor.stack.len() . && matches!(self.token.kind, token::CloseDelim(_))) . { . // Advance one token at a time, so `TokenCursor::next()` . // can capture these tokens if necessary. 40,306 ( 0.00%) self.bump(); . } . // We are still inside the frame corresponding . // to the delimited stream we captured, so grab . // the tokens from this frame. . let frame = &self.token_cursor.frame; 1,468 ( 0.00%) let stream = frame.tree_cursor.stream.clone(); 1,468 ( 0.00%) let span = frame.span; 734 ( 0.00%) let delim = frame.delim; . // Consume close delimiter 1,468 ( 0.00%) self.bump(); 3,670 ( 0.00%) TokenTree::Delimited(span, delim, stream) . } . token::CloseDelim(_) | token::Eof => unreachable!(), . _ => { 810 ( 0.00%) self.bump(); 2,025 ( 0.00%) TokenTree::Token(self.prev_token.clone()) . } . } 7,973 ( 0.00%) } . . /// Parses a stream of tokens into a list of `TokenTree`s, up to EOF. . pub fn parse_all_token_trees(&mut self) -> PResult<'a, Vec> { . let mut tts = Vec::new(); . while self.token != token::Eof { . tts.push(self.parse_token_tree()); . } . Ok(tts) -- line 1234 ---------------------------------------- -- line 1244 ---------------------------------------- . } . TokenStream::new(result) . } . . /// Evaluates the closure with restrictions in place. . /// . /// Afters the closure is evaluated, restrictions are reset. . fn with_res(&mut self, res: Restrictions, f: impl FnOnce(&mut Self) -> T) -> T { 5,492 ( 0.00%) let old = self.restrictions; 6,685 ( 0.00%) self.restrictions = res; . let res = f(self); 6,155 ( 0.00%) self.restrictions = old; . res . } . 26,048 ( 0.00%) fn is_crate_vis(&self) -> bool { 16,280 ( 0.00%) self.token.is_keyword(kw::Crate) && self.look_ahead(1, |t| t != &token::ModSep) 29,304 ( 0.00%) } . . /// Parses `pub`, `pub(crate)` and `pub(in path)` plus shortcuts `crate` for `pub(crate)`, . /// `pub(self)` for `pub(in self)` and `pub(super)` for `pub(in super)`. . /// If the following element can't be a tuple (i.e., it's a function definition), then . /// it's not a tuple struct field), and the contents within the parentheses aren't valid, . /// so emit a proper diagnostic. . // Public for rustfmt usage. 24,120 ( 0.00%) pub fn parse_visibility(&mut self, fbt: FollowedByType) -> PResult<'a, Visibility> { 4,824 ( 0.00%) maybe_whole!(self, NtVis, |x| x); . 2,412 ( 0.00%) self.expected_tokens.push(TokenType::Keyword(kw::Crate)); 9,648 ( 0.00%) if self.is_crate_vis() { . self.bump(); // `crate` . self.sess.gated_spans.gate(sym::crate_visibility_modifier, self.prev_token.span); . return Ok(Visibility { . span: self.prev_token.span, . kind: VisibilityKind::Crate(CrateSugar::JustCrate), . tokens: None, . }); . } . . if !self.eat_keyword(kw::Pub) { . // We need a span for our `Spanned`, but there's inherently no . // keyword to grab a span from for inherited visibility; an empty span at the . // beginning of the current token would seem to be the "Schelling span". 2,264 ( 0.00%) return Ok(Visibility { 6,792 ( 0.00%) span: self.token.span.shrink_to_lo(), . kind: VisibilityKind::Inherited, . tokens: None, . }); . } 148 ( 0.00%) let lo = self.prev_token.span; . 740 ( 0.00%) if self.check(&token::OpenDelim(token::Paren)) { . // We don't `self.bump()` the `(` yet because this might be a struct definition where . // `()` or a tuple might be allowed. For example, `struct Struct(pub (), pub (usize));`. . // Because of this, we only `bump` the `(` if we're assured it is appropriate to do so . // by the following tokens. 198 ( 0.00%) if self.is_keyword_ahead(1, &[kw::Crate]) && self.look_ahead(2, |t| t != &token::ModSep) . // account for `pub(crate::foo)` . { . // Parse `pub(crate)`. 66 ( 0.00%) self.bump(); // `(` 44 ( 0.00%) self.bump(); // `crate` 66 ( 0.00%) self.expect(&token::CloseDelim(token::Paren))?; // `)` 22 ( 0.00%) let vis = VisibilityKind::Crate(CrateSugar::PubCrate); . return Ok(Visibility { 66 ( 0.00%) span: lo.to(self.prev_token.span), . kind: vis, . tokens: None, . }); . } else if self.is_keyword_ahead(1, &[kw::In]) { . // Parse `pub(in path)`. . self.bump(); // `(` . self.bump(); // `in` . let path = self.parse_path(PathStyle::Mod)?; // `path` -- line 1317 ---------------------------------------- -- line 1338 ---------------------------------------- . } else if let FollowedByType::No = fbt { . // Provide this diagnostic if a type cannot follow; . // in particular, if this is not a tuple struct. . self.recover_incorrect_vis_restriction()?; . // Emit diagnostic, but continue with public visibility. . } . } . 378 ( 0.00%) Ok(Visibility { span: lo, kind: VisibilityKind::Public, tokens: None }) 21,708 ( 0.00%) } . . /// Recovery for e.g. `pub(something) fn ...` or `struct X { pub(something) y: Z }` . fn recover_incorrect_vis_restriction(&mut self) -> PResult<'a, ()> { . self.bump(); // `(` . let path = self.parse_path(PathStyle::Mod)?; . self.expect(&token::CloseDelim(token::Paren))?; // `)` . . let msg = "incorrect visibility restriction"; -- line 1355 ---------------------------------------- -- line 1370 ---------------------------------------- . ) . .emit(); . . Ok(()) . } . . /// Parses `extern string_literal?`. . fn parse_extern(&mut self) -> Extern { 659 ( 0.00%) if self.eat_keyword(kw::Extern) { Extern::from_abi(self.parse_abi()) } else { Extern::None } . } . . /// Parses a string literal as an ABI spec. . fn parse_abi(&mut self) -> Option { . match self.parse_str_lit() { . Ok(str_lit) => Some(str_lit), . Err(Some(lit)) => match lit.kind { . ast::LitKind::Err(_) => None, -- line 1386 ---------------------------------------- -- line 1395 ---------------------------------------- . .emit(); . None . } . }, . Err(None) => None, . } . } . 470 ( 0.00%) pub fn collect_tokens_no_attrs( . &mut self, . f: impl FnOnce(&mut Self) -> PResult<'a, R>, . ) -> PResult<'a, R> { . // The only reason to call `collect_tokens_no_attrs` is if you want tokens, so use . // `ForceCollect::Yes` . self.collect_tokens_trailing_token( . AttrWrapper::empty(), . ForceCollect::Yes, 372 ( 0.00%) |this, _attrs| Ok((f(this)?, TrailingToken::None)), . ) 470 ( 0.00%) } . . /// `::{` or `::*` 161,600 ( 0.00%) fn is_import_coupler(&mut self) -> bool { 80,800 ( 0.00%) self.check(&token::ModSep) . && self.look_ahead(1, |t| { 39,640 ( 0.00%) *t == token::OpenDelim(token::Brace) || *t == token::BinOp(token::Star) . }) 162,162 ( 0.00%) } . . pub fn clear_expected_tokens(&mut self) { . self.expected_tokens.clear(); . } . } . . crate fn make_unclosed_delims_error( . unmatched: UnmatchedBrace, -- line 1430 ---------------------------------------- -- line 1450 ---------------------------------------- . err.span_label(sp, "closing delimiter possibly meant for this"); . } . if let Some(sp) = unmatched.unclosed_span { . err.span_label(sp, "unclosed delimiter"); . } . Some(err) . } . 17,344 ( 0.00%) pub fn emit_unclosed_delims(unclosed_delims: &mut Vec, sess: &ParseSess) { 8,672 ( 0.00%) *sess.reached_eof.borrow_mut() |= . unclosed_delims.iter().any(|unmatched_delim| unmatched_delim.found_delim.is_none()); 8,672 ( 0.00%) for unmatched in unclosed_delims.drain(..) { . if let Some(mut e) = make_unclosed_delims_error(unmatched, sess) { . e.emit(); . } . } 17,344 ( 0.00%) } . . /// A helper struct used when building an `AttrAnnotatedTokenStream` from . /// a `LazyTokenStream`. Both delimiter and non-delimited tokens . /// are stored as `FlatToken::Token`. A vector of `FlatToken`s . /// is then 'parsed' to build up an `AttrAnnotatedTokenStream` with nested . /// `AttrAnnotatedTokenTree::Delimited` tokens . #[derive(Debug, Clone)] . pub enum FlatToken { -- line 1474 ---------------------------------------- 643,075 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/alloc/src/collections/btree/map.rs -------------------------------------------------------------------------------- Ir -- line 165 ---------------------------------------- . #[rustc_insignificant_dtor] . pub struct BTreeMap { . root: Option>, . length: usize, . } . . #[stable(feature = "btree_drop", since = "1.7.0")] . unsafe impl<#[may_dangle] K, #[may_dangle] V> Drop for BTreeMap { 4,574,768 ( 0.08%) fn drop(&mut self) { 224 ( 0.00%) drop(unsafe { ptr::read(self) }.into_iter()) 4,596,309 ( 0.08%) } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl Clone for BTreeMap { . fn clone(&self) -> BTreeMap { 60 ( 0.00%) fn clone_subtree<'a, K: Clone, V: Clone>( . node: NodeRef, K, V, marker::LeafOrInternal>, . ) -> BTreeMap . where . K: 'a, . V: 'a, . { 7 ( 0.00%) match node.force() { . Leaf(leaf) => { 19 ( 0.00%) let mut out_tree = BTreeMap { root: Some(Root::new()), length: 0 }; . . { . let root = out_tree.root.as_mut().unwrap(); // unwrap succeeds because we just wrapped . let mut out_node = match root.borrow_mut().force() { . Leaf(leaf) => leaf, . Internal(_) => unreachable!(), . }; . . let mut in_edge = leaf.first_edge(); . while let Ok(kv) = in_edge.right_kv() { . let (k, v) = kv.into_kv(); . in_edge = kv.right_edge(); . 19 ( 0.00%) out_node.push(k.clone(), v.clone()); 49 ( 0.00%) out_tree.length += 1; . } . } . 29 ( 0.00%) out_tree . } . Internal(internal) => { . let mut out_tree = clone_subtree(internal.first_edge().descend()); . . { . let out_root = BTreeMap::ensure_is_owned(&mut out_tree.root); . let mut out_node = out_root.push_internal_level(); . let mut in_edge = internal.first_edge(); -- line 217 ---------------------------------------- -- line 235 ---------------------------------------- . out_node.push(k, v, subroot.unwrap_or_else(Root::new)); . out_tree.length += 1 + sublength; . } . } . . out_tree . } . } 56 ( 0.00%) } . 8 ( 0.00%) if self.is_empty() { . BTreeMap::new() . } else { 20 ( 0.00%) clone_subtree(self.root.as_ref().unwrap().reborrow()) // unwrap succeeds because not empty . } . } . } . . impl super::Recover for BTreeMap . where . K: Borrow + Ord, . Q: Ord, -- line 256 ---------------------------------------- -- line 514 ---------------------------------------- . /// let mut map = BTreeMap::new(); . /// . /// // entries can now be inserted into the empty map . /// map.insert(1, "a"); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_btree_new", issue = "71835")] . #[must_use] 144 ( 0.00%) pub const fn new() -> BTreeMap { 1,728,831 ( 0.03%) BTreeMap { root: None, length: 0 } 144 ( 0.00%) } . . /// Clears the map, removing all elements. . /// . /// # Examples . /// . /// Basic usage: . /// . /// ``` -- line 532 ---------------------------------------- -- line 560 ---------------------------------------- . /// assert_eq!(map.get(&2), None); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] . pub fn get(&self, key: &Q) -> Option<&V> . where . K: Borrow + Ord, . Q: Ord, . { 16,493 ( 0.00%) let root_node = self.root.as_ref()?.reborrow(); 76,148 ( 0.00%) match root_node.search_tree(key) { 44 ( 0.00%) Found(handle) => Some(handle.into_kv().1), . GoDown(_) => 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 the ordering . /// on the borrowed form *must* match the ordering on the key type. -- line 578 ---------------------------------------- -- line 814 ---------------------------------------- . /// ``` . // See `get` for implementation notes, this is basically a copy-paste with mut's added . #[stable(feature = "rust1", since = "1.0.0")] . pub fn get_mut(&mut self, key: &Q) -> Option<&mut V> . where . K: Borrow + Ord, . Q: Ord, . { 5,151 ( 0.00%) let root_node = self.root.as_mut()?.borrow_mut(); 36,057 ( 0.00%) match root_node.search_tree(key) { . Found(handle) => Some(handle.into_val_mut()), . GoDown(_) => None, . } . } . . /// Inserts a key-value pair into the map. . /// . /// If the map did not have this key present, `None` is returned. -- line 831 ---------------------------------------- -- line 848 ---------------------------------------- . /// 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"); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] 89,372 ( 0.00%) pub fn insert(&mut self, key: K, value: V) -> Option . where . K: Ord, . { . match self.entry(key) { . Occupied(mut entry) => Some(entry.insert(value)), . Vacant(entry) => { 110,402 ( 0.00%) entry.insert(value); 1,600 ( 0.00%) None . } . } 81,358 ( 0.00%) } . . /// Tries to insert a key-value pair into the map, and returns . /// a mutable reference to the value in the entry. . /// . /// If the map already had this key present, nothing is updated, and . /// an error containing the occupied entry and the value is returned. . /// . /// # Examples -- line 875 ---------------------------------------- -- line 914 ---------------------------------------- . /// use std::collections::BTreeMap; . /// . /// let mut map = BTreeMap::new(); . /// map.insert(1, "a"); . /// assert_eq!(map.remove(&1), Some("a")); . /// assert_eq!(map.remove(&1), None); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] 272,656 ( 0.00%) pub fn remove(&mut self, key: &Q) -> Option . where . K: Borrow + Ord, . Q: Ord, . { 176,650 ( 0.00%) self.remove_entry(key).map(|(_, v)| v) 307,232 ( 0.01%) } . . /// 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 the ordering . /// on the borrowed form *must* match the ordering on the key type. . /// . /// # Examples -- line 936 ---------------------------------------- -- line 947 ---------------------------------------- . /// ``` . #[stable(feature = "btreemap_remove_entry", since = "1.45.0")] . pub fn remove_entry(&mut self, key: &Q) -> Option<(K, V)> . where . K: Borrow + Ord, . Q: Ord, . { . let (map, dormant_map) = DormantMutRef::new(self); 42,520 ( 0.00%) let root_node = map.root.as_mut()?.borrow_mut(); 191,682 ( 0.00%) match root_node.search_tree(key) { . Found(handle) => { 137,046 ( 0.00%) Some(OccupiedEntry { handle, dormant_map, _marker: PhantomData }.remove_entry()) 34,134 ( 0.00%) } . GoDown(_) => None, . } . } . . /// Retains only the elements specified by the predicate. . /// . /// In other words, remove all pairs `(k, v)` such that `f(&k, &mut v)` returns `false`. . /// The elements are visited in ascending key order. -- line 967 ---------------------------------------- -- line 1135 ---------------------------------------- . /// // count the number of occurrences of letters in the vec . /// for x in ["a", "b", "a", "c", "a", "b"] { . /// *count.entry(x).or_insert(0) += 1; . /// } . /// . /// assert_eq!(count["a"], 3); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] 30 ( 0.00%) pub fn entry(&mut self, key: K) -> Entry<'_, K, V> . where . K: Ord, . { . // FIXME(@porglezomp) Avoid allocating if we don't insert . let (map, dormant_map) = DormantMutRef::new(self); . let root_node = Self::ensure_is_owned(&mut map.root).borrow_mut(); 187,924 ( 0.00%) match root_node.search_tree(&key) { 3,456 ( 0.00%) Found(handle) => Occupied(OccupiedEntry { handle, dormant_map, _marker: PhantomData }), . GoDown(handle) => { 36,277 ( 0.00%) Vacant(VacantEntry { key, handle, dormant_map, _marker: PhantomData }) . } . } 27 ( 0.00%) } . . /// Splits the collection into two at the given key. Returns everything after the given key, . /// including the key. . /// . /// # Examples . /// . /// Basic usage: . /// -- line 1164 ---------------------------------------- -- line 1307 ---------------------------------------- . } . . /// Makes a `BTreeMap` from a sorted iterator. . pub(crate) fn bulk_build_from_sorted_iter(iter: I) -> Self . where . K: Ord, . I: IntoIterator, . { 6 ( 0.00%) let mut root = Root::new(); 3 ( 0.00%) let mut length = 0; 15 ( 0.00%) root.bulk_push(DedupSortedIter::new(iter.into_iter()), &mut length); 6 ( 0.00%) BTreeMap { root: Some(root), length } . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl<'a, K, V> IntoIterator for &'a BTreeMap { . type Item = (&'a K, &'a V); . type IntoIter = Iter<'a, K, V>; . -- line 1326 ---------------------------------------- -- line 1328 ---------------------------------------- . self.iter() . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl<'a, K: 'a, V: 'a> Iterator for Iter<'a, K, V> { . type Item = (&'a K, &'a V); . 186 ( 0.00%) fn next(&mut self) -> Option<(&'a K, &'a V)> { 322,544 ( 0.01%) if self.length == 0 { 58 ( 0.00%) None . } else { 126,083 ( 0.00%) self.length -= 1; . Some(unsafe { self.range.next_unchecked() }) . } 252 ( 0.00%) } . . fn size_hint(&self) -> (usize, Option) { . (self.length, Some(self.length)) . } . . fn last(mut self) -> Option<(&'a K, &'a V)> { . self.next_back() . } -- line 1351 ---------------------------------------- -- line 1458 ---------------------------------------- . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl IntoIterator for BTreeMap { . type Item = (K, V); . type IntoIter = IntoIter; . 216 ( 0.00%) fn into_iter(self) -> IntoIter { 432 ( 0.00%) let mut me = ManuallyDrop::new(self); 1,632,988 ( 0.03%) if let Some(root) = me.root.take() { . let full_range = root.into_dying().full_range(); . 18 ( 0.00%) IntoIter { range: full_range, length: me.length } . } else { 1,048,681 ( 0.02%) IntoIter { range: LazyLeafRange::none(), length: 0 } . } 144 ( 0.00%) } . } . . #[stable(feature = "btree_drop", since = "1.7.0")] . impl Drop for IntoIter { 10,960 ( 0.00%) fn drop(&mut self) { . struct DropGuard<'a, K, V>(&'a mut IntoIter); . . impl<'a, K, V> Drop for DropGuard<'a, K, V> { . fn drop(&mut self) { . // Continue the same loop we perform below. This only runs when unwinding, so we . // don't have to care about panics this time (they'll abort). . while let Some(kv) = self.0.dying_next() { . // SAFETY: we consume the dying handle immediately. . unsafe { kv.drop_key_val() }; . } . } . } . 341,515 ( 0.01%) while let Some(kv) = self.dying_next() { . let guard = DropGuard(self); . // SAFETY: we don't touch the tree before consuming the dying handle. 16,714 ( 0.00%) unsafe { kv.drop_key_val() }; . mem::forget(guard); . } 10,888 ( 0.00%) } . } . . impl IntoIter { . /// Core of a `next` method returning a dying KV handle, . /// invalidated by further calls to this function and some others. 533,014 ( 0.01%) fn dying_next( . &mut self, . ) -> Option, marker::KV>> { 1,802,299 ( 0.03%) if self.length == 0 { 224 ( 0.00%) self.range.deallocating_end(); 118,578 ( 0.00%) None . } else { 74,282 ( 0.00%) self.length -= 1; 77,917 ( 0.00%) Some(unsafe { self.range.deallocating_next_unchecked() }) . } 532,675 ( 0.01%) } . . /// Core of a `next_back` method returning a dying KV handle, . /// invalidated by further calls to this function and some others. . fn dying_next_back( . &mut self, . ) -> Option, marker::KV>> { . if self.length == 0 { . self.range.deallocating_end(); -- line 1524 ---------------------------------------- -- line 1529 ---------------------------------------- . } . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl Iterator for IntoIter { . type Item = (K, V); . 4,724 ( 0.00%) fn next(&mut self) -> Option<(K, V)> { . // SAFETY: we consume the dying handle immediately. 160 ( 0.00%) self.dying_next().map(unsafe { |kv| kv.into_key_val() }) 5,296 ( 0.00%) } . . fn size_hint(&self) -> (usize, Option) { 518 ( 0.00%) (self.length, Some(self.length)) . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl DoubleEndedIterator for IntoIter { . fn next_back(&mut self) -> Option<(K, V)> { . // SAFETY: we consume the dying handle immediately. . self.dying_next_back().map(unsafe { |kv| kv.into_key_val() }) -- line 1551 ---------------------------------------- -- line 1561 ---------------------------------------- . . #[stable(feature = "fused", since = "1.26.0")] . impl FusedIterator for IntoIter {} . . #[stable(feature = "rust1", since = "1.0.0")] . impl<'a, K, V> Iterator for Keys<'a, K, V> { . type Item = &'a K; . 116 ( 0.00%) fn next(&mut self) -> Option<&'a K> { 298 ( 0.00%) self.inner.next().map(|(k, _)| k) 116 ( 0.00%) } . . fn size_hint(&self) -> (usize, Option) { . self.inner.size_hint() . } . . fn last(mut self) -> Option<&'a K> { . self.next_back() . } -- line 1579 ---------------------------------------- -- line 2088 ---------------------------------------- . /// for (key, value) in map.iter() { . /// println!("{}: {}", key, value); . /// } . /// . /// let (first_key, first_value) = map.iter().next().unwrap(); . /// assert_eq!((*first_key, *first_value), (1, "a")); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] 290 ( 0.00%) pub fn iter(&self) -> Iter<'_, K, V> { 394,214 ( 0.01%) if let Some(root) = &self.root { . let full_range = root.reborrow().full_range(); . 19 ( 0.00%) Iter { range: full_range, length: self.length } . } else { 412 ( 0.00%) Iter { range: LazyLeafRange::none(), length: 0 } . } 116 ( 0.00%) } . . /// Gets a mutable iterator over the entries of the map, sorted by key. . /// . /// # Examples . /// . /// Basic usage: . /// . /// ``` -- line 2112 ---------------------------------------- -- line 2148 ---------------------------------------- . /// let mut a = BTreeMap::new(); . /// a.insert(2, "b"); . /// a.insert(1, "a"); . /// . /// let keys: Vec<_> = a.keys().cloned().collect(); . /// assert_eq!(keys, [1, 2]); . /// ``` . #[stable(feature = "rust1", since = "1.0.0")] 232 ( 0.00%) pub fn keys(&self) -> Keys<'_, K, V> { 6,081 ( 0.00%) Keys { inner: self.iter() } 116 ( 0.00%) } . . /// Gets an iterator over the values of the map, in order by key. . /// . /// # Examples . /// . /// Basic usage: . /// . /// ``` -- line 2166 ---------------------------------------- -- line 2216 ---------------------------------------- . /// let mut a = BTreeMap::new(); . /// assert_eq!(a.len(), 0); . /// a.insert(1, "a"); . /// assert_eq!(a.len(), 1); . /// ``` . #[must_use] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_btree_new", issue = "71835")] 40 ( 0.00%) pub const fn len(&self) -> usize { 25 ( 0.00%) self.length 40 ( 0.00%) } . . /// Returns `true` if the map contains no elements. . /// . /// # Examples . /// . /// Basic usage: . /// . /// ``` -- line 2234 ---------------------------------------- -- line 2238 ---------------------------------------- . /// assert!(a.is_empty()); . /// a.insert(1, "a"); . /// assert!(!a.is_empty()); . /// ``` . #[must_use] . #[stable(feature = "rust1", since = "1.0.0")] . #[rustc_const_unstable(feature = "const_btree_new", issue = "71835")] . pub const fn is_empty(&self) -> bool { 361,159 ( 0.01%) self.len() == 0 . } . . /// If the root node is the empty (non-allocated) root node, allocate our . /// own node. Is an associated function to avoid borrowing the entire BTreeMap. . fn ensure_is_owned(root: &mut Option>) -> &mut Root { . root.get_or_insert_with(Root::new) . } . } -- line 2254 ---------------------------------------- 232,932 ( 0.00%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_ast/src/token.rs -------------------------------------------------------------------------------- Ir -- line 12 ---------------------------------------- . use rustc_data_structures::sync::Lrc; . use rustc_macros::HashStable_Generic; . use rustc_span::symbol::{kw, sym}; . use rustc_span::symbol::{Ident, Symbol}; . use rustc_span::{self, edition::Edition, Span, DUMMY_SP}; . use std::borrow::Cow; . use std::{fmt, mem}; . 47,450 ( 0.00%) #[derive(Clone, Copy, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)] . pub enum CommentKind { . Line, . Block, . } . 452 ( 0.00%) #[derive(Clone, PartialEq, Encodable, Decodable, Hash, Debug, Copy)] . #[derive(HashStable_Generic)] . pub enum BinOpToken { . Plus, . Minus, . Star, . Slash, . Percent, . Caret, . And, . Or, . Shl, . Shr, . } . . /// A delimiter token. 45,862 ( 0.00%) #[derive(Clone, PartialEq, Eq, Encodable, Decodable, Hash, Debug, Copy)] . #[derive(HashStable_Generic)] . pub enum DelimToken { . /// A round parenthesis (i.e., `(` or `)`). . Paren, . /// A square bracket (i.e., `[` or `]`). . Bracket, . /// A curly brace (i.e., `{` or `}`). . Brace, . /// An empty delimiter. . NoDelim, . } . 2,750 ( 0.00%) #[derive(Clone, Copy, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)] . pub enum LitKind { . Bool, // AST only, must never appear in a `Token` . Byte, . Char, . Integer, . Float, . Str, . StrRaw(u16), // raw string delimited by `n` hash symbols . ByteStr, . ByteStrRaw(u16), // raw byte string delimited by `n` hash symbols . Err, . } . . /// A literal token. 13,791 ( 0.00%) #[derive(Clone, Copy, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)] . pub struct Lit { . pub kind: LitKind, . pub symbol: Symbol, . pub suffix: Option, . } . . impl fmt::Display for Lit { 220 ( 0.00%) fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { 396 ( 0.00%) let Lit { kind, symbol, suffix } = *self; . match kind { . Byte => write!(f, "b'{}'", symbol)?, . Char => write!(f, "'{}'", symbol)?, 66 ( 0.00%) Str => write!(f, "\"{}\"", symbol)?, 108 ( 0.00%) StrRaw(n) => write!( . f, . "r{delim}\"{string}\"{delim}", 60 ( 0.00%) delim = "#".repeat(n as usize), . string = symbol . )?, . ByteStr => write!(f, "b\"{}\"", symbol)?, . ByteStrRaw(n) => write!( . f, . "br{delim}\"{string}\"{delim}", . delim = "#".repeat(n as usize), . string = symbol . )?, 30 ( 0.00%) Integer | Float | Bool | Err => write!(f, "{}", symbol)?, . } . 88 ( 0.00%) if let Some(suffix) = suffix { . write!(f, "{}", suffix)?; . } . . Ok(()) 220 ( 0.00%) } . } . . impl LitKind { . /// An English article for the literal token kind. . pub fn article(self) -> &'static str { . match self { . Integer | Err => "an", . _ => "a", -- line 113 ---------------------------------------- -- line 123 ---------------------------------------- . Float => "float", . Str | StrRaw(..) => "string", . ByteStr | ByteStrRaw(..) => "byte string", . Err => "error", . } . } . . crate fn may_have_suffix(self) -> bool { 14 ( 0.00%) matches!(self, Integer | Float | Err) . } . } . . impl Lit { . pub fn new(kind: LitKind, symbol: Symbol, suffix: Option) -> Lit { . Lit { kind, symbol, suffix } 1,102 ( 0.00%) } . } . 744 ( 0.00%) pub fn ident_can_begin_expr(name: Symbol, span: Span, is_raw: bool) -> bool { 1,302 ( 0.00%) let ident_token = Token::new(Ident(name, is_raw), span); . 374 ( 0.00%) !ident_token.is_reserved_ident() . || ident_token.is_path_segment_keyword() . || [ . kw::Async, . kw::Do, . kw::Box, . kw::Break, . kw::Const, . kw::Continue, -- line 152 ---------------------------------------- -- line 161 ---------------------------------------- . kw::True, . kw::Try, . kw::Unsafe, . kw::While, . kw::Yield, . kw::Static, . ] . .contains(&name) 930 ( 0.00%) } . . fn ident_can_begin_type(name: Symbol, span: Span, is_raw: bool) -> bool { 37,032 ( 0.00%) let ident_token = Token::new(Ident(name, is_raw), span); . 12,876 ( 0.00%) !ident_token.is_reserved_ident() . || ident_token.is_path_segment_keyword() . || [kw::Underscore, kw::For, kw::Impl, kw::Fn, kw::Unsafe, kw::Extern, kw::Typeof, kw::Dyn] . .contains(&name) . } . 11,194,104 ( 0.19%) #[derive(Clone, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)] . pub enum TokenKind { . /* Expression-operator symbols. */ . Eq, . Lt, . Le, . EqEq, . Ne, . Ge, . Gt, . AndAnd, . OrOr, . Not, . Tilde, 105,033 ( 0.00%) BinOp(BinOpToken), 33 ( 0.00%) BinOpEq(BinOpToken), . . /* Structural symbols */ . At, . Dot, . DotDot, . DotDotDot, . DotDotEq, . Comma, -- line 203 ---------------------------------------- -- line 208 ---------------------------------------- . LArrow, . FatArrow, . Pound, . Dollar, . Question, . /// Used by proc macros for representing lifetimes, not generated by lexer right now. . SingleQuote, . /// An opening delimiter (e.g., `{`). 168,924 ( 0.00%) OpenDelim(DelimToken), . /// A closing delimiter (e.g., `}`). 39,732 ( 0.00%) CloseDelim(DelimToken), . . /* Literals */ 11,871 ( 0.00%) Literal(Lit), . . /// Identifier token. . /// Do not forget about `NtIdent` when you want to match on identifiers. . /// It's recommended to use `Token::(ident,uninterpolate,uninterpolated_span)` to . /// treat regular and interpolated identifiers in the same way. 93,544 ( 0.00%) Ident(Symbol, /* is_raw */ bool), . /// Lifetime identifier token. . /// Do not forget about `NtLifetime` when you want to match on lifetime identifiers. . /// It's recommended to use `Token::(lifetime,uninterpolate,uninterpolated_span)` to . /// treat regular and interpolated lifetime identifiers in the same way. 13,749 ( 0.00%) Lifetime(Symbol), . 8,375 ( 0.00%) Interpolated(Lrc), . . /// A doc comment token. . /// `Symbol` is the doc comment's data excluding its "quotes" (`///`, `/**`, etc) . /// similarly to symbols in string literal tokens. 9,864 ( 0.00%) DocComment(CommentKind, ast::AttrStyle, Symbol), . . Eof, . } . . // `TokenKind` is used a lot. Make sure it doesn't unintentionally get bigger. . #[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))] . rustc_data_structures::static_assert_size!(TokenKind, 16); . 829,070 ( 0.01%) #[derive(Clone, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)] . pub struct Token { 27,144 ( 0.00%) pub kind: TokenKind, 52 ( 0.00%) pub span: Span, . } . . impl TokenKind { . pub fn lit(kind: LitKind, symbol: Symbol, suffix: Option) -> TokenKind { . Literal(Lit::new(kind, symbol, suffix)) 110 ( 0.00%) } . . // An approximation to proc-macro-style single-character operators used by rustc parser. . // If the operator token can be broken into two tokens, the first of which is single-character, . // then this function performs that operation, otherwise it returns `None`. 15,263 ( 0.00%) pub fn break_two_token_op(&self) -> Option<(TokenKind, TokenKind)> { 62,053 ( 0.00%) Some(match *self { . Le => (Lt, Eq), . EqEq => (Eq, Eq), . Ne => (Not, Eq), . Ge => (Gt, Eq), . AndAnd => (BinOp(And), BinOp(And)), . OrOr => (BinOp(Or), BinOp(Or)), . BinOp(Shl) => (Lt, Lt), . BinOp(Shr) => (Gt, Gt), -- line 271 ---------------------------------------- -- line 280 ---------------------------------------- . BinOpEq(Shl) => (Lt, Le), . BinOpEq(Shr) => (Gt, Ge), . DotDot => (Dot, Dot), . DotDotDot => (Dot, DotDot), . ModSep => (Colon, Colon), . RArrow => (BinOp(Minus), Gt), . LArrow => (Lt, BinOp(Minus)), . FatArrow => (Eq, Gt), 15,149 ( 0.00%) _ => return None, . }) 15,263 ( 0.00%) } . . /// Returns tokens that are likely to be typed accidentally instead of the current token. . /// Enables better error recovery when the wrong token is found. . pub fn similar_tokens(&self) -> Option> { . match *self { . Comma => Some(vec![Dot, Lt, Semi]), . Semi => Some(vec![Colon, Comma]), . FatArrow => Some(vec![Eq, RArrow]), . _ => None, . } . } . . pub fn should_end_const_arg(&self) -> bool { 15,334 ( 0.00%) matches!(self, Gt | Ge | BinOp(Shr) | BinOpEq(Shr)) 3,670 ( 0.00%) } . } . . impl Token { 45,442 ( 0.00%) pub fn new(kind: TokenKind, span: Span) -> Self { 187,945 ( 0.00%) Token { kind, span } 45,442 ( 0.00%) } . . /// Some token that will be thrown away later. 8,729 ( 0.00%) pub fn dummy() -> Self { . Token::new(TokenKind::Question, DUMMY_SP) 8,729 ( 0.00%) } . . /// Recovers a `Token` from an `Ident`. This creates a raw identifier if necessary. . pub fn from_ast_ident(ident: Ident) -> Self { 6,416 ( 0.00%) Token::new(Ident(ident.name, ident.is_raw_guess()), ident.span) . } . . /// Return this token by value and leave a dummy token in its place. 32,653 ( 0.00%) pub fn take(&mut self) -> Self { . mem::replace(self, Token::dummy()) 32,653 ( 0.00%) } . . /// For interpolated tokens, returns a span of the fragment to which the interpolated . /// token refers. For all other tokens this is just a regular span. . /// It is particularly important to use this for identifiers and lifetimes . /// for which spans affect name resolution and edition checks. . /// Note that keywords are also identifiers, so they should use this . /// if they keep spans or perform edition checks. . pub fn uninterpolated_span(&self) -> Span { 2,924 ( 0.00%) match &self.kind { 126 ( 0.00%) Interpolated(nt) => nt.span(), 1,399 ( 0.00%) _ => self.span, . } 1,399 ( 0.00%) } . . pub fn is_op(&self) -> bool { 97,959 ( 0.00%) !matches!( 32,653 ( 0.00%) self.kind, . OpenDelim(..) . | CloseDelim(..) . | Literal(..) . | DocComment(..) . | Ident(..) . | Lifetime(..) . | Interpolated(..) . | Eof . ) 32,653 ( 0.00%) } . . pub fn is_like_plus(&self) -> bool { 110,250 ( 0.00%) matches!(self.kind, BinOp(Plus) | BinOpEq(Plus)) 21,958 ( 0.00%) } . . /// Returns `true` if the token can appear at the start of an expression. 199 ( 0.00%) pub fn can_begin_expr(&self) -> bool { 995 ( 0.00%) match self.uninterpolate().kind { 1,674 ( 0.00%) Ident(name, is_raw) => 558 ( 0.00%) ident_can_begin_expr(name, self.span, is_raw), // value name or keyword . OpenDelim(..) | // tuple, array or block . Literal(..) | // literal . Not | // operator not . BinOp(Minus) | // unary minus . BinOp(Star) | // dereference . BinOp(Or) | OrOr | // closure . BinOp(And) | // reference . AndAnd | // double reference -- line 371 ---------------------------------------- -- line 376 ---------------------------------------- . Lifetime(..) | // labeled loop . Pound => true, // expression attributes . Interpolated(ref nt) => matches!(**nt, NtLiteral(..) | . NtExpr(..) | . NtBlock(..) | . NtPath(..)), . _ => false, . } 398 ( 0.00%) } . . /// Returns `true` if the token can appear at the start of a type. 32,236 ( 0.00%) pub fn can_begin_type(&self) -> bool { 44,848 ( 0.00%) match self.uninterpolate().kind { 55,548 ( 0.00%) Ident(name, is_raw) => 6,172 ( 0.00%) ident_can_begin_type(name, self.span, is_raw), // type name or keyword . OpenDelim(Paren) | // tuple . OpenDelim(Bracket) | // array . Not | // never . BinOp(Star) | // raw pointer . BinOp(And) | // reference . AndAnd | // double reference . Question | // maybe bound in trait object . Lifetime(..) | // lifetime bound in trait object . Lt | BinOp(Shl) | // associated path . ModSep => true, // global path 6,270 ( 0.00%) Interpolated(ref nt) => matches!(**nt, NtTy(..) | NtPath(..)), . _ => false, . } 48,354 ( 0.00%) } . . /// Returns `true` if the token can appear at the start of a const param. . pub fn can_begin_const_arg(&self) -> bool { 26,370 ( 0.00%) match self.kind { . OpenDelim(Brace) => true, 17,488 ( 0.00%) Interpolated(ref nt) => matches!(**nt, NtExpr(..) | NtBlock(..) | NtLiteral(..)), 3,088 ( 0.00%) _ => self.can_begin_literal_maybe_minus(), . } 2,186 ( 0.00%) } . . /// Returns `true` if the token can appear at the start of a generic bound. . pub fn can_begin_bound(&self) -> bool { . self.is_path_start() . || self.is_lifetime() . || self.is_keyword(kw::For) . || self == &Question . || self == &OpenDelim(Paren) -- line 421 ---------------------------------------- -- line 427 ---------------------------------------- . } . . /// Returns `true` if the token is any literal, a minus (which can prefix a literal, . /// for example a '-42', or one of the boolean idents). . /// . /// In other words, would this token be a valid start of `parse_literal_maybe_minus`? . /// . /// Keep this in sync with and `Lit::from_token`, excluding unary negation. 3,135 ( 0.00%) pub fn can_begin_literal_maybe_minus(&self) -> bool { 29,901 ( 0.00%) match self.uninterpolate().kind { . Literal(..) | BinOp(Minus) => true, 11,320 ( 0.00%) Ident(name, false) if name.is_bool_lit() => true, . Interpolated(ref nt) => match &**nt { . NtLiteral(_) => true, . NtExpr(e) => match &e.kind { . ast::ExprKind::Lit(_) => true, . ast::ExprKind::Unary(ast::UnOp::Neg, e) => { . matches!(&e.kind, ast::ExprKind::Lit(_)) . } . _ => false, . }, . _ => false, . }, . _ => false, . } 6,270 ( 0.00%) } . . // A convenience function for matching on identifiers during parsing. . // Turns interpolated identifier (`$i: ident`) or lifetime (`$l: lifetime`) token . // into the regular identifier or lifetime token it refers to, . // otherwise returns the original token. 9,061 ( 0.00%) pub fn uninterpolate(&self) -> Cow<'_, Token> { 1,059,636 ( 0.02%) match &self.kind { 433,579 ( 0.01%) Interpolated(nt) => match **nt { 136,431 ( 0.00%) NtIdent(ident, is_raw) => { 341,235 ( 0.01%) Cow::Owned(Token::new(Ident(ident.name, is_raw), ident.span)) . } . NtLifetime(ident) => Cow::Owned(Token::new(Lifetime(ident.name), ident.span)), . _ => Cow::Borrowed(self), . }, . _ => Cow::Borrowed(self), . } 9,061 ( 0.00%) } . . /// Returns an identifier if this token is an identifier. 78,475 ( 0.00%) pub fn ident(&self) -> Option<(Ident, /* is_raw */ bool)> { . let token = self.uninterpolate(); 683,851 ( 0.01%) match token.kind { 3,405,803 ( 0.06%) Ident(name, is_raw) => Some((Ident::new(name, token.span), is_raw)), . _ => None, . } 685,530 ( 0.01%) } . . /// Returns a lifetime identifier if this token is a lifetime. 6,612 ( 0.00%) pub fn lifetime(&self) -> Option { . let token = self.uninterpolate(); 42,616 ( 0.00%) match token.kind { 22,146 ( 0.00%) Lifetime(name) => Some(Ident::new(name, token.span)), . _ => None, . } 46,284 ( 0.00%) } . . /// Returns `true` if the token is an identifier. . pub fn is_ident(&self) -> bool { . self.ident().is_some() 7,086 ( 0.00%) } . . /// Returns `true` if the token is a lifetime. 14,696 ( 0.00%) pub fn is_lifetime(&self) -> bool { . self.lifetime().is_some() 29,392 ( 0.00%) } . . /// Returns `true` if the token is an identifier whose name is the given . /// string slice. 3,294 ( 0.00%) pub fn is_ident_named(&self, name: Symbol) -> bool { . self.ident().map_or(false, |(ident, _)| ident.name == name) 6,588 ( 0.00%) } . . /// Returns `true` if the token is an interpolated path. . fn is_path(&self) -> bool { 68,860 ( 0.00%) if let Interpolated(ref nt) = self.kind { 7,798 ( 0.00%) if let NtPath(..) = **nt { . return true; . } . } . false . } . . /// Would `maybe_whole_expr` in `parser.rs` return `Ok(..)`? . /// That is, is this a pre-parsed expression dropped into the token stream -- line 516 ---------------------------------------- -- line 522 ---------------------------------------- . } . } . . false . } . . // Is the token an interpolated block (`$b:block`)? . pub fn is_whole_block(&self) -> bool { 176 ( 0.00%) if let Interpolated(ref nt) = self.kind { . if let NtBlock(..) = **nt { . return true; . } . } . false 88 ( 0.00%) } . . /// Returns `true` if the token is either the `mut` or `const` keyword. . pub fn is_mutability(&self) -> bool { . self.is_keyword(kw::Mut) || self.is_keyword(kw::Const) . } . 1,692 ( 0.00%) pub fn is_qpath_start(&self) -> bool { 36,174 ( 0.00%) self == &Lt || self == &BinOp(Shl) 6 ( 0.00%) } . 68,968 ( 0.00%) pub fn is_path_start(&self) -> bool { 106,365 ( 0.00%) self == &ModSep . || self.is_qpath_start() . || self.is_path() . || self.is_path_segment_keyword() 12,590 ( 0.00%) || self.is_ident() && !self.is_reserved_ident() 86,210 ( 0.00%) } . . /// Returns `true` if the token is a given keyword, `kw`. 207,623 ( 0.00%) pub fn is_keyword(&self, kw: Symbol) -> bool { . self.is_non_raw_ident_where(|id| id.name == kw) 415,246 ( 0.01%) } . 1,916 ( 0.00%) pub fn is_path_segment_keyword(&self) -> bool { . self.is_non_raw_ident_where(Ident::is_path_segment_keyword) . } . . // Returns true for reserved identifiers used internally for elided lifetimes, . // unnamed method parameters, crate root module, error recovery etc. 523 ( 0.00%) pub fn is_special_ident(&self) -> bool { . self.is_non_raw_ident_where(Ident::is_special) . } . . /// Returns `true` if the token is a keyword used in the language. 523 ( 0.00%) pub fn is_used_keyword(&self) -> bool { . self.is_non_raw_ident_where(Ident::is_used_keyword) . } . . /// Returns `true` if the token is a keyword reserved for possible future use. 523 ( 0.00%) pub fn is_unused_keyword(&self) -> bool { . self.is_non_raw_ident_where(Ident::is_unused_keyword) . } . . /// Returns `true` if the token is either a special identifier or a keyword. . pub fn is_reserved_ident(&self) -> bool { . self.is_non_raw_ident_where(Ident::is_reserved) . } . . /// Returns `true` if the token is the identifier `true` or `false`. 1,916 ( 0.00%) pub fn is_bool_lit(&self) -> bool { 3,832 ( 0.00%) self.is_non_raw_ident_where(|id| id.name.is_bool_lit()) . } . . pub fn is_numeric_lit(&self) -> bool { . matches!( . self.kind, . Literal(Lit { kind: LitKind::Integer, .. }) | Literal(Lit { kind: LitKind::Float, .. }) . ) . } . . /// Returns `true` if the token is a non-raw identifier for which `pred` holds. 32 ( 0.00%) pub fn is_non_raw_ident_where(&self, pred: impl FnOnce(Ident) -> bool) -> bool { 1,400,122 ( 0.02%) match self.ident() { 16,071 ( 0.00%) Some((id, false)) => pred(id), . _ => false, . } 40 ( 0.00%) } . 121,700 ( 0.00%) pub fn glue(&self, joint: &Token) -> Option { 60,850 ( 0.00%) let kind = match self.kind { 986 ( 0.00%) Eq => match joint.kind { . Eq => EqEq, . Gt => FatArrow, . _ => return None, . }, 168 ( 0.00%) Lt => match joint.kind { . Eq => Le, . Lt => BinOp(Shl), . Le => BinOpEq(Shl), . BinOp(Minus) => LArrow, . _ => return None, . }, 4,505 ( 0.00%) Gt => match joint.kind { . Eq => Ge, . Gt => BinOp(Shr), . Ge => BinOpEq(Shr), . _ => return None, . }, . Not => match joint.kind { . Eq => Ne, . _ => return None, . }, 3,005 ( 0.00%) BinOp(op) => match joint.kind { . Eq => BinOpEq(op), 12 ( 0.00%) BinOp(And) if op == And => AndAnd, 1 ( 0.00%) BinOp(Or) if op == Or => OrOr, 379 ( 0.00%) Gt if op == Minus => RArrow, . _ => return None, . }, 42 ( 0.00%) Dot => match joint.kind { . Dot => DotDot, . DotDot => DotDotDot, . _ => return None, . }, . DotDot => match joint.kind { . Dot => DotDotDot, . Eq => DotDotEq, . _ => return None, . }, 3,444 ( 0.00%) Colon => match joint.kind { . Colon => ModSep, . _ => return None, . }, 328 ( 0.00%) SingleQuote => match joint.kind { 738 ( 0.00%) Ident(name, false) => Lifetime(Symbol::intern(&format!("'{}", name))), . _ => return None, . }, . . Le | EqEq | Ne | Ge | AndAnd | OrOr | Tilde | BinOpEq(..) | At | DotDotDot . | DotDotEq | Comma | Semi | ModSep | RArrow | LArrow | FatArrow | Pound | Dollar . | Question | OpenDelim(..) | CloseDelim(..) | Literal(..) | Ident(..) . | Lifetime(..) | Interpolated(..) | DocComment(..) | Eof => return None, . }; . 31,993 ( 0.00%) Some(Token::new(kind, self.span.to(joint.span))) 109,530 ( 0.00%) } . } . . impl PartialEq for Token { . fn eq(&self, rhs: &TokenKind) -> bool { 550,658 ( 0.01%) self.kind == *rhs . } . } . 182 ( 0.00%) #[derive(Clone, Encodable, Decodable)] . /// For interpolation during macro expansion. . pub enum Nonterminal { . NtItem(P), . NtBlock(P), . NtStmt(ast::Stmt), . NtPat(P), 52 ( 0.00%) NtExpr(P), . NtTy(P), . NtIdent(Ident, /* is_raw */ bool), . NtLifetime(Ident), . NtLiteral(P), . /// Stuff inside brackets for attributes . NtMeta(P), . NtPath(ast::Path), . NtVis(ast::Visibility), -- line 686 ---------------------------------------- -- line 711 ---------------------------------------- . Path, . Vis, . TT, . } . . impl NonterminalKind { . /// The `edition` closure is used to get the edition for the given symbol. Doing . /// `span.edition()` is expensive, so we do it lazily. 796 ( 0.00%) pub fn from_symbol( . symbol: Symbol, . edition: impl FnOnce() -> Edition, . ) -> Option { 1,884 ( 0.00%) Some(match symbol { . sym::item => NonterminalKind::Item, . sym::block => NonterminalKind::Block, . sym::stmt => NonterminalKind::Stmt, . sym::pat => match edition() { . Edition::Edition2015 | Edition::Edition2018 => { . NonterminalKind::PatParam { inferred: true } . } . Edition::Edition2021 => NonterminalKind::PatWithOr, -- line 731 ---------------------------------------- -- line 737 ---------------------------------------- . sym::lifetime => NonterminalKind::Lifetime, . sym::literal => NonterminalKind::Literal, . sym::meta => NonterminalKind::Meta, . sym::path => NonterminalKind::Path, . sym::vis => NonterminalKind::Vis, . sym::tt => NonterminalKind::TT, . _ => return None, . }) 796 ( 0.00%) } . fn symbol(self) -> Symbol { . match self { . NonterminalKind::Item => sym::item, . NonterminalKind::Block => sym::block, . NonterminalKind::Stmt => sym::stmt, . NonterminalKind::PatParam { inferred: false } => sym::pat_param, . NonterminalKind::PatParam { inferred: true } | NonterminalKind::PatWithOr => sym::pat, . NonterminalKind::Expr => sym::expr, -- line 753 ---------------------------------------- -- line 765 ---------------------------------------- . . impl fmt::Display for NonterminalKind { . fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { . write!(f, "{}", self.symbol()) . } . } . . impl Nonterminal { 63 ( 0.00%) pub fn span(&self) -> Span { 315 ( 0.00%) match self { . NtItem(item) => item.span, . NtBlock(block) => block.span, . NtStmt(stmt) => stmt.span, . NtPat(pat) => pat.span, . NtExpr(expr) | NtLiteral(expr) => expr.span, . NtTy(ty) => ty.span, 63 ( 0.00%) NtIdent(ident, _) | NtLifetime(ident) => ident.span, . NtMeta(attr_item) => attr_item.span(), . NtPath(path) => path.span, . NtVis(vis) => vis.span, . NtTT(tt) => tt.span(), . } 126 ( 0.00%) } . } . . impl PartialEq for Nonterminal { . fn eq(&self, rhs: &Self) -> bool { . match (self, rhs) { . (NtIdent(ident_lhs, is_raw_lhs), NtIdent(ident_rhs, is_raw_rhs)) => { . ident_lhs == ident_rhs && is_raw_lhs == is_raw_rhs . } -- line 795 ---------------------------------------- 3,927,932 ( 0.07%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/core/src/ops/function.rs -------------------------------------------------------------------------------- Ir -- line 62 ---------------------------------------- . message = "expected a `{Fn}<{Args}>` closure, found `{Self}`", . label = "expected an `Fn<{Args}>` closure, found `{Self}`" . )] . #[fundamental] // so that regex can rely that `&str: !FnMut` . #[must_use = "closures are lazy and do nothing unless called"] . pub trait Fn: FnMut { . /// Performs the call operation. . #[unstable(feature = "fn_traits", issue = "29625")] 232 ( 0.00%) extern "rust-call" fn call(&self, args: Args) -> Self::Output; . } . . /// The version of the call operator that takes a mutable receiver. . /// . /// Instances of `FnMut` can be called repeatedly and may mutate state. . /// . /// `FnMut` is implemented automatically by closures which take mutable . /// references to captured variables, as well as all types that implement -- line 78 ---------------------------------------- -- line 142 ---------------------------------------- . message = "expected a `{FnMut}<{Args}>` closure, found `{Self}`", . label = "expected an `FnMut<{Args}>` closure, found `{Self}`" . )] . #[fundamental] // so that regex can rely that `&str: !FnMut` . #[must_use = "closures are lazy and do nothing unless called"] . pub trait FnMut: FnOnce { . /// Performs the call operation. . #[unstable(feature = "fn_traits", issue = "29625")] 287,374 ( 0.00%) extern "rust-call" fn call_mut(&mut self, args: Args) -> Self::Output; . } . . /// The version of the call operator that takes a by-value receiver. . /// . /// Instances of `FnOnce` can be called, but might not be callable multiple . /// times. Because of this, if the only thing known about a type is that it . /// implements `FnOnce`, it can only be called once. . /// -- line 158 ---------------------------------------- -- line 219 ---------------------------------------- . pub trait FnOnce { . /// The returned type after the call operator is used. . #[lang = "fn_once_output"] . #[stable(feature = "fn_once_output", since = "1.12.0")] . type Output; . . /// Performs the call operation. . #[unstable(feature = "fn_traits", issue = "29625")] 1,031,157 ( 0.02%) extern "rust-call" fn call_once(self, args: Args) -> Self::Output; . } . . mod impls { . #[stable(feature = "rust1", since = "1.0.0")] . impl Fn for &F . where . F: Fn, . { . extern "rust-call" fn call(&self, args: A) -> F::Output { 4 ( 0.00%) (**self).call(args) . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl FnMut for &F . where . F: Fn, . { -- line 245 ---------------------------------------- -- line 251 ---------------------------------------- . #[stable(feature = "rust1", since = "1.0.0")] . impl FnOnce for &F . where . F: Fn, . { . type Output = F::Output; . . extern "rust-call" fn call_once(self, args: A) -> F::Output { 2 ( 0.00%) (*self).call(args) . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl FnMut for &mut F . where . F: FnMut, . { 160,162 ( 0.00%) extern "rust-call" fn call_mut(&mut self, args: A) -> F::Output { 1,999,464 ( 0.03%) (*self).call_mut(args) 220,362 ( 0.00%) } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl FnOnce for &mut F . where . F: FnMut, . { . type Output = F::Output; 6,143,829 ( 0.11%) extern "rust-call" fn call_once(self, args: A) -> F::Output { 535,446 ( 0.01%) (*self).call_mut(args) 5,149,772 ( 0.09%) } . } . } 64,430 ( 0.00%) -------------------------------------------------------------------------------- -- 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. 92,822 ( 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 { 54,888 ( 0.00%) 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. 1,717,254 ( 0.03%) self.ptr = unsafe { NonNull::new_unchecked(self.ptr.as_ptr().offset(offset)) }; 9,148 ( 0.00%) old . } 18,296 ( 0.00%) } . . // 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)] . 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`. 4,449 ( 0.00%) self.end = unsafe { self.end.offset(-offset) }; 1,264 ( 0.00%) self.end . } 1,264 ( 0.00%) } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl ExactSizeIterator for $name<'_, T> { . #[inline(always)] . fn len(&self) -> usize { 234,326 ( 0.00%) len!(self) 800 ( 0.00%) } . . #[inline(always)] . fn is_empty(&self) -> bool { . is_empty!(self) . } . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl<'a, T> Iterator for $name<'a, T> { . type Item = $elem; . . #[inline] 34,737 ( 0.00%) fn next(&mut self) -> Option<$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 { 567,350 ( 0.01%) assume(!self.ptr.as_ptr().is_null()); 57,895 ( 0.00%) if mem::size_of::() != 0 { 105,252 ( 0.00%) assume(!self.end.is_null()); . } 119,298,419 ( 2.06%) if is_empty!(self) { 2,431 ( 0.00%) None . } else { 18,419 ( 0.00%) Some(next_unchecked!(self)) . } . } 34,737 ( 0.00%) } . . #[inline] . fn size_hint(&self) -> (usize, Option) { 3,261,496 ( 0.06%) let exact = len!(self); . (exact, Some(exact)) . } . . #[inline] . fn count(self) -> usize { . len!(self) . } . . #[inline] . fn nth(&mut self, n: usize) -> Option<$elem> { 45,308 ( 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() { 8,258 ( 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, . { 4,072 ( 0.00%) while let Some(x) = self.next() { 23,075 ( 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] 16 ( 0.00%) fn any(&mut self, mut f: F) -> bool . where . Self: Sized, . F: FnMut(Self::Item) -> bool, . { 668,825 ( 0.01%) while let Some(x) = self.next() { 938,452 ( 0.02%) if f(x) { . return true; . } . } . false 16 ( 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] 282 ( 0.00%) fn find

(&mut self, mut predicate: P) -> Option . where . Self: Sized, . P: FnMut(&Self::Item) -> bool, . { 46,750 ( 0.00%) while let Some(x) = self.next() { 149,792 ( 0.00%) if predicate(&x) { 34 ( 0.00%) return Some(x); . } . } 38 ( 0.00%) None 2,901 ( 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] 50 ( 0.00%) fn find_map(&mut self, mut f: F) -> Option . where . Self: Sized, . F: FnMut(Self::Item) -> Option, . { 1,446,939 ( 0.03%) while let Some(x) = self.next() { 562,517 ( 0.01%) if let Some(y) = f(x) { 122,910 ( 0.00%) return Some(y); . } 20 ( 0.00%) } 6 ( 0.00%) None 11,583 ( 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] 16 ( 0.00%) fn position

(&mut self, mut predicate: P) -> Option where . Self: Sized, . P: FnMut(Self::Item) -> bool, . { 92 ( 0.00%) let n = len!(self); 4 ( 0.00%) let mut i = 0; 104 ( 0.00%) while let Some(x) = self.next() { 234,633 ( 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. 4 ( 0.00%) unsafe { assume(i < n) }; 12 ( 0.00%) return Some(i); . } 32 ( 0.00%) i += 1; . } . None 20 ( 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] . 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; 17,131 ( 0.00%) while let Some(x) = self.next_back() { 230,172 ( 0.00%) i -= 1; 174,650 ( 0.00%) if predicate(x) { . // SAFETY: `i` must be lower than `n` since it starts at `n` . // and is only decreasing. . unsafe { assume(i < n) }; . return Some(i); . } . } . None . } -- line 326 ---------------------------------------- -- line 332 ---------------------------------------- . // the returned references is guaranteed to refer to an element . // of the slice and thus guaranteed to be valid. . // . // Also note that the caller also guarantees that we're never . // called with the same index again, and that no other methods . // that will access this subslice are called, so it is valid . // for the returned reference to be mutable in the case of . // `IterMut` 995,358 ( 0.02%) unsafe { & $( $mut_ )? * self.ptr.as_ptr().add(idx) } . } . . $($extra)* . } . . #[stable(feature = "rust1", since = "1.0.0")] . impl<'a, T> DoubleEndedIterator for $name<'a, T> { . #[inline] 1,896 ( 0.00%) fn next_back(&mut self) -> Option<$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 { 2,532 ( 0.00%) assume(!self.ptr.as_ptr().is_null()); 3,160 ( 0.00%) if mem::size_of::() != 0 { 1,289 ( 0.00%) assume(!self.end.is_null()); . } 1,691,293 ( 0.03%) if is_empty!(self) { . None . } else { 1,264 ( 0.00%) Some(next_back_unchecked!(self)) . } . } 1,896 ( 0.00%) } . . #[inline] . fn nth_back(&mut self, n: usize) -> Option<$elem> { . if n >= len!(self) { . // This iterator is now empty. . self.end = self.ptr.as_ptr(); . return None; . } -- line 375 ---------------------------------------- 18,943,355 ( 0.33%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/freshen.rs -------------------------------------------------------------------------------- Ir -- line 47 ---------------------------------------- . const_freshen_count: u32, . ty_freshen_map: FxHashMap>, . const_freshen_map: FxHashMap, &'tcx ty::Const<'tcx>>, . keep_static: bool, . } . . impl<'a, 'tcx> TypeFreshener<'a, 'tcx> { . pub fn new(infcx: &'a InferCtxt<'a, 'tcx>, keep_static: bool) -> TypeFreshener<'a, 'tcx> { 1,561,755 ( 0.03%) TypeFreshener { . infcx, . ty_freshen_count: 0, . const_freshen_count: 0, . ty_freshen_map: Default::default(), . const_freshen_map: Default::default(), . keep_static, . } . } . 341,552 ( 0.01%) fn freshen_ty( . &mut self, . opt_ty: Option>, . key: ty::InferTy, . freshener: F, . ) -> Ty<'tcx> . where . F: FnOnce(u32) -> ty::InferTy, . { 85,388 ( 0.00%) if let Some(ty) = opt_ty { . return ty.fold_with(self); . } . 69,436 ( 0.00%) match self.ty_freshen_map.entry(key) { 5,844 ( 0.00%) Entry::Occupied(entry) => *entry.get(), . Entry::Vacant(entry) => { 28,874 ( 0.00%) let index = self.ty_freshen_count; 115,496 ( 0.00%) self.ty_freshen_count += 1; 57,748 ( 0.00%) let t = self.infcx.tcx.mk_ty_infer(freshener(index)); . entry.insert(t); . t . } . } 312,462 ( 0.01%) } . . fn freshen_const( . &mut self, . opt_ct: Option<&'tcx ty::Const<'tcx>>, . key: ty::InferConst<'tcx>, . freshener: F, . ty: Ty<'tcx>, . ) -> &'tcx ty::Const<'tcx> . where . F: FnOnce(u32) -> ty::InferConst<'tcx>, . { 112 ( 0.00%) if let Some(ct) = opt_ct { . return ct.fold_with(self); . } . 112 ( 0.00%) match self.const_freshen_map.entry(key) { 11 ( 0.00%) Entry::Occupied(entry) => *entry.get(), . Entry::Vacant(entry) => { 45 ( 0.00%) let index = self.const_freshen_count; 180 ( 0.00%) self.const_freshen_count += 1; 90 ( 0.00%) let ct = self.infcx.tcx.mk_const_infer(freshener(index), ty); . entry.insert(ct); . ct . } . } . } . } . . impl<'a, 'tcx> TypeFolder<'tcx> for TypeFreshener<'a, 'tcx> { . fn tcx<'b>(&'b self) -> TyCtxt<'tcx> { 508,396 ( 0.01%) self.infcx.tcx 94,660 ( 0.00%) } . . fn fold_region(&mut self, r: ty::Region<'tcx>) -> ty::Region<'tcx> { 356,976 ( 0.01%) match *r { . ty::ReLateBound(..) => { . // leave bound regions alone . r . } . . ty::ReEarlyBound(..) . | ty::ReFree(_) . | ty::ReVar(_) . | ty::RePlaceholder(..) . | ty::ReEmpty(_) . | ty::ReErased => { . // replace all free regions with 'erased . self.tcx().lifetimes.re_erased . } . ty::ReStatic => { 305 ( 0.00%) if self.keep_static { . r . } else { . self.tcx().lifetimes.re_erased . } . } . } 32,980 ( 0.00%) } . 2,136,222 ( 0.04%) fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx> { 1,068,111 ( 0.02%) if !t.needs_infer() && !t.has_erasable_regions() { . return t; . } . . let tcx = self.infcx.tcx; . 688,282 ( 0.01%) match *t.kind() { 42,634 ( 0.00%) ty::Infer(ty::TyVar(v)) => { 341,072 ( 0.01%) let opt_ty = self.infcx.inner.borrow_mut().type_variables().probe(v).known(); 383,706 ( 0.01%) self.freshen_ty(opt_ty, ty::TyVar(v), ty::FreshTy) . } . 208 ( 0.00%) ty::Infer(ty::IntVar(v)) => self.freshen_ty( 416 ( 0.00%) self.infcx . .inner . .borrow_mut() . .int_unification_table() . .probe_value(v) . .map(|v| v.to_type(tcx)), . ty::IntVar(v), . ty::FreshIntTy, . ), . 40 ( 0.00%) ty::Infer(ty::FloatVar(v)) => self.freshen_ty( 64 ( 0.00%) self.infcx . .inner . .borrow_mut() . .float_unification_table() . .probe_value(v) . .map(|v| v.to_type(tcx)), . ty::FloatVar(v), . ty::FreshFloatTy, . ), -- line 181 ---------------------------------------- -- line 210 ---------------------------------------- . | ty::Dynamic(..) . | ty::Never . | ty::Tuple(..) . | ty::Projection(..) . | ty::Foreign(..) . | ty::Param(..) . | ty::Closure(..) . | ty::GeneratorWitness(..) 696,912 ( 0.01%) | ty::Opaque(..) => t.super_fold_with(self), . . ty::Placeholder(..) | ty::Bound(..) => bug!("unexpected type {:?}", t), . } 1,584,023 ( 0.03%) } . 3,348 ( 0.00%) fn fold_const(&mut self, ct: &'tcx ty::Const<'tcx>) -> &'tcx ty::Const<'tcx> { 3,460 ( 0.00%) match ct.val { . ty::ConstKind::Infer(ty::InferConst::Var(v)) => { 448 ( 0.00%) let opt_ct = self . .infcx . .inner . .borrow_mut() . .const_unification_table() . .probe_value(v) . .val . .known(); . return self.freshen_const( -- line 235 ---------------------------------------- -- line 256 ---------------------------------------- . } . . ty::ConstKind::Param(_) . | ty::ConstKind::Value(_) . | ty::ConstKind::Unevaluated(..) . | ty::ConstKind::Error(_) => {} . } . 4,016 ( 0.00%) ct.super_fold_with(self) 392 ( 0.00%) } . } 569,911 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_middle/src/ty/structural_impls.rs -------------------------------------------------------------------------------- Ir -- line 685 ---------------------------------------- . } . } . . impl<'tcx, T: TypeFoldable<'tcx>, U: TypeFoldable<'tcx>> TypeFoldable<'tcx> for (T, U) { . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result<(T, U), F::Error> { 6,418 ( 0.00%) Ok((self.0.try_fold_with(folder)?, self.1.try_fold_with(folder)?)) . } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { . self.0.visit_with(visitor)?; 138 ( 0.00%) self.1.visit_with(visitor) . } . } . . impl<'tcx, A: TypeFoldable<'tcx>, B: TypeFoldable<'tcx>, C: TypeFoldable<'tcx>> TypeFoldable<'tcx> . for (A, B, C) . { . fn try_super_fold_with>( . self, -- line 706 ---------------------------------------- -- line 826 ---------------------------------------- . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { . self.try_map_id(|value| value.try_fold_with(folder)) . } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { 3,780 ( 0.00%) (**self).visit_with(visitor) . } . } . . impl<'tcx, T: TypeFoldable<'tcx>> TypeFoldable<'tcx> for Vec { . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { 124,582 ( 0.00%) self.try_map_id(|t| t.try_fold_with(folder)) . } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { 3,936 ( 0.00%) self.iter().try_for_each(|t| t.visit_with(visitor)) . } . } . . impl<'tcx, T: TypeFoldable<'tcx>> TypeFoldable<'tcx> for Box<[T]> { . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { -- line 855 ---------------------------------------- -- line 857 ---------------------------------------- . } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { . self.iter().try_for_each(|t| t.visit_with(visitor)) . } . } . . impl<'tcx, T: TypeFoldable<'tcx>> TypeFoldable<'tcx> for ty::Binder<'tcx, T> { 65,811 ( 0.00%) fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { 21,286,416 ( 0.37%) self.try_map_bound(|ty| ty.try_fold_with(folder)) 81,843 ( 0.00%) } . . fn try_fold_with>(self, folder: &mut F) -> Result { 1,556,621 ( 0.03%) folder.try_fold_binder(self) . } . 3,438 ( 0.00%) fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { 13,793 ( 0.00%) self.as_ref().skip_binder().visit_with(visitor) 3,056 ( 0.00%) } . . fn visit_with>(&self, visitor: &mut V) -> ControlFlow { . visitor.visit_binder(self) . } . } . . impl<'tcx> TypeFoldable<'tcx> for &'tcx ty::List>> { . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { 9,982 ( 0.00%) ty::util::fold_list(self, folder, |tcx, v| tcx.intern_poly_existential_predicates(v)) . } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { . self.iter().try_for_each(|p| p.visit_with(visitor)) . } . } . . impl<'tcx> TypeFoldable<'tcx> for &'tcx ty::List> { . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { 147,846 ( 0.00%) ty::util::fold_list(self, folder, |tcx, v| tcx.intern_type_list(v)) . } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { . self.iter().try_for_each(|t| t.visit_with(visitor)) . } . } . . impl<'tcx> TypeFoldable<'tcx> for &'tcx ty::List { -- line 911 ---------------------------------------- -- line 949 ---------------------------------------- . } . }, . }) . } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { . use crate::ty::InstanceDef::*; . self.substs.visit_with(visitor)?; 200 ( 0.00%) match self.def { . Item(def) => def.visit_with(visitor), . VtableShim(did) | ReifyShim(did) | Intrinsic(did) | Virtual(did, _) => { . did.visit_with(visitor) . } . FnPtrShim(did, ty) | CloneShim(did, ty) => { . did.visit_with(visitor)?; . ty.visit_with(visitor) . } -- line 965 ---------------------------------------- -- line 976 ---------------------------------------- . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { . Ok(Self { instance: self.instance.try_fold_with(folder)?, promoted: self.promoted }) . } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { 100 ( 0.00%) self.instance.visit_with(visitor) . } . } . . impl<'tcx> TypeFoldable<'tcx> for Ty<'tcx> { 344,452 ( 0.01%) fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { 4,737,283 ( 0.08%) let kind = match *self.kind() { 1,068 ( 0.00%) ty::RawPtr(tm) => ty::RawPtr(tm.try_fold_with(folder)?), 15,480 ( 0.00%) ty::Array(typ, sz) => ty::Array(typ.try_fold_with(folder)?, sz.try_fold_with(folder)?), 7,444 ( 0.00%) ty::Slice(typ) => ty::Slice(typ.try_fold_with(folder)?), 2,331,862 ( 0.04%) ty::Adt(tid, substs) => ty::Adt(tid, substs.try_fold_with(folder)?), 7,804 ( 0.00%) ty::Dynamic(trait_ty, region) => { 15,421 ( 0.00%) ty::Dynamic(trait_ty.try_fold_with(folder)?, region.try_fold_with(folder)?) . } 208,178 ( 0.00%) ty::Tuple(ts) => ty::Tuple(ts.try_fold_with(folder)?), 229,600 ( 0.00%) ty::FnDef(def_id, substs) => ty::FnDef(def_id, substs.try_fold_with(folder)?), 76,378 ( 0.00%) ty::FnPtr(f) => ty::FnPtr(f.try_fold_with(folder)?), 225,678 ( 0.00%) ty::Ref(r, ty, mutbl) => { 368,121 ( 0.01%) ty::Ref(r.try_fold_with(folder)?, ty.try_fold_with(folder)?, mutbl) . } . ty::Generator(did, substs, movability) => { . ty::Generator(did, substs.try_fold_with(folder)?, movability) . } . ty::GeneratorWitness(types) => ty::GeneratorWitness(types.try_fold_with(folder)?), 103,388 ( 0.00%) ty::Closure(did, substs) => ty::Closure(did, substs.try_fold_with(folder)?), 877,661 ( 0.02%) ty::Projection(data) => ty::Projection(data.try_fold_with(folder)?), . ty::Opaque(did, substs) => ty::Opaque(did, substs.try_fold_with(folder)?), . . ty::Bool . | ty::Char . | ty::Str . | ty::Int(_) . | ty::Uint(_) . | ty::Float(_) -- line 1020 ---------------------------------------- -- line 1022 ---------------------------------------- . | ty::Infer(_) . | ty::Param(..) . | ty::Bound(..) . | ty::Placeholder(..) . | ty::Never . | ty::Foreign(..) => return Ok(self), . }; . 2,493,290 ( 0.04%) Ok(if *self.kind() == kind { self } else { folder.tcx().mk_ty(kind) }) 487,464 ( 0.01%) } . . fn try_fold_with>(self, folder: &mut F) -> Result { 868,910 ( 0.02%) folder.try_fold_ty(self) . } . 1,967,516 ( 0.03%) fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { 1,911,363 ( 0.03%) match self.kind() { . ty::RawPtr(ref tm) => tm.visit_with(visitor), 634 ( 0.00%) ty::Array(typ, sz) => { 1,478 ( 0.00%) typ.visit_with(visitor)?; 5,706 ( 0.00%) sz.visit_with(visitor) . } . ty::Slice(typ) => typ.visit_with(visitor), . ty::Adt(_, substs) => substs.visit_with(visitor), 188 ( 0.00%) ty::Dynamic(ref trait_ty, ref reg) => { . trait_ty.visit_with(visitor)?; 1,880 ( 0.00%) reg.visit_with(visitor) . } . ty::Tuple(ts) => ts.visit_with(visitor), . ty::FnDef(_, substs) => substs.visit_with(visitor), . ty::FnPtr(ref f) => f.visit_with(visitor), . ty::Ref(r, ty, _) => { 13,574 ( 0.00%) r.visit_with(visitor)?; . ty.visit_with(visitor) . } . ty::Generator(_did, ref substs, _) => substs.visit_with(visitor), . ty::GeneratorWitness(ref types) => types.visit_with(visitor), . ty::Closure(_did, ref substs) => substs.visit_with(visitor), 14 ( 0.00%) ty::Projection(ref data) => data.visit_with(visitor), . ty::Opaque(_, ref substs) => substs.visit_with(visitor), . . ty::Bool . | ty::Char . | ty::Str . | ty::Int(_) . | ty::Uint(_) . | ty::Float(_) -- line 1068 ---------------------------------------- -- line 1069 ---------------------------------------- . | ty::Error(_) . | ty::Infer(_) . | ty::Bound(..) . | ty::Placeholder(..) . | ty::Param(..) . | ty::Never . | ty::Foreign(..) => ControlFlow::CONTINUE, . } 1,917,079 ( 0.03%) } . . fn visit_with>(&self, visitor: &mut V) -> ControlFlow { 2,775,835 ( 0.05%) visitor.visit_ty(self) . } . } . . impl<'tcx> TypeFoldable<'tcx> for ty::Region<'tcx> { . fn try_super_fold_with>( . self, . _folder: &mut F, . ) -> Result { . Ok(self) . } . . fn try_fold_with>(self, folder: &mut F) -> Result { 80,925 ( 0.00%) folder.try_fold_region(self) . } . . fn super_visit_with>(&self, _visitor: &mut V) -> ControlFlow { . ControlFlow::CONTINUE . } . 188 ( 0.00%) fn visit_with>(&self, visitor: &mut V) -> ControlFlow { 87,689 ( 0.00%) visitor.visit_region(*self) 563 ( 0.00%) } . } . . impl<'tcx> TypeFoldable<'tcx> for ty::Predicate<'tcx> { 92,790 ( 0.00%) fn try_fold_with>(self, folder: &mut F) -> Result { . folder.try_fold_predicate(self) 77,325 ( 0.00%) } . . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { 7,919,179 ( 0.14%) let new = self.inner.kind.try_fold_with(folder)?; 27,136,446 ( 0.47%) Ok(folder.tcx().reuse_or_mk_predicate(self, new)) 46,395 ( 0.00%) } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { . self.inner.kind.visit_with(visitor) . } . . fn visit_with>(&self, visitor: &mut V) -> ControlFlow { 287,943 ( 0.00%) visitor.visit_predicate(*self) . } . . fn has_vars_bound_at_or_above(&self, binder: ty::DebruijnIndex) -> bool { 128,509 ( 0.00%) self.inner.outer_exclusive_binder > binder 128,509 ( 0.00%) } . . fn has_type_flags(&self, flags: ty::TypeFlags) -> bool { 503,102 ( 0.01%) self.inner.flags.intersects(flags) 503,102 ( 0.01%) } . } . . impl<'tcx> TypeFoldable<'tcx> for &'tcx ty::List> { . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { 432,224 ( 0.01%) ty::util::fold_list(self, folder, |tcx, v| tcx.intern_predicates(v)) . } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { 3,560 ( 0.00%) self.iter().try_for_each(|p| p.visit_with(visitor)) . } . } . . impl<'tcx, T: TypeFoldable<'tcx>, I: Idx> TypeFoldable<'tcx> for IndexVec { . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { -- line 1152 ---------------------------------------- -- line 1154 ---------------------------------------- . } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { . self.iter().try_for_each(|t| t.visit_with(visitor)) . } . } . . impl<'tcx> TypeFoldable<'tcx> for &'tcx ty::Const<'tcx> { 747 ( 0.00%) fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { 6,408 ( 0.00%) let ty = self.ty.try_fold_with(folder)?; 71,067 ( 0.00%) let val = self.val.try_fold_with(folder)?; 18,077 ( 0.00%) if ty != self.ty || val != self.val { 32,201 ( 0.00%) Ok(folder.tcx().mk_const(ty::Const { ty, val })) . } else { . Ok(self) . } 871 ( 0.00%) } . 18 ( 0.00%) fn try_fold_with>(self, folder: &mut F) -> Result { 7,427 ( 0.00%) folder.try_fold_const(self) 18 ( 0.00%) } . 28 ( 0.00%) fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { 522 ( 0.00%) self.ty.visit_with(visitor)?; 20 ( 0.00%) self.val.visit_with(visitor) 36 ( 0.00%) } . 3,804 ( 0.00%) fn visit_with>(&self, visitor: &mut V) -> ControlFlow { 1,727 ( 0.00%) visitor.visit_const(self) 4,438 ( 0.00%) } . } . . impl<'tcx> TypeFoldable<'tcx> for ty::ConstKind<'tcx> { . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { 52,245 ( 0.00%) Ok(match self { . ty::ConstKind::Infer(ic) => ty::ConstKind::Infer(ic.try_fold_with(folder)?), 100 ( 0.00%) ty::ConstKind::Param(p) => ty::ConstKind::Param(p.try_fold_with(folder)?), 54 ( 0.00%) ty::ConstKind::Unevaluated(uv) => ty::ConstKind::Unevaluated(uv.try_fold_with(folder)?), . ty::ConstKind::Value(_) . | ty::ConstKind::Bound(..) . | ty::ConstKind::Placeholder(..) 15,676 ( 0.00%) | ty::ConstKind::Error(_) => self, . }) . } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { 1,584 ( 0.00%) match *self { . ty::ConstKind::Infer(ic) => ic.visit_with(visitor), . ty::ConstKind::Param(p) => p.visit_with(visitor), . ty::ConstKind::Unevaluated(uv) => uv.visit_with(visitor), . ty::ConstKind::Value(_) . | ty::ConstKind::Bound(..) . | ty::ConstKind::Placeholder(_) . | ty::ConstKind::Error(_) => ControlFlow::CONTINUE, . } -- line 1214 ---------------------------------------- -- line 1230 ---------------------------------------- . . impl<'tcx> TypeFoldable<'tcx> for ty::Unevaluated<'tcx> { . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { . Ok(ty::Unevaluated { . def: self.def, 246 ( 0.00%) substs: self.substs.try_fold_with(folder)?, . promoted: self.promoted, . }) . } . . fn visit_with>(&self, visitor: &mut V) -> ControlFlow { 10 ( 0.00%) visitor.visit_unevaluated_const(*self) . } . . fn super_visit_with>(&self, visitor: &mut V) -> ControlFlow { 4 ( 0.00%) self.substs.visit_with(visitor) . } . } . . impl<'tcx> TypeFoldable<'tcx> for ty::Unevaluated<'tcx, ()> { . fn try_super_fold_with>( . self, . folder: &mut F, . ) -> Result { -- line 1256 ---------------------------------------- 1,435,372 ( 0.02%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_data_structures/src/sip128.rs -------------------------------------------------------------------------------- Ir -- line 91 ---------------------------------------- . // maximum of number bytes needed to fill an 8-byte-sized element on which . // SipHash operates. Note that for variable-sized copies which are known to be . // less than 8 bytes, this function will perform more work than necessary unless . // the compiler is able to optimize the extra work away. . #[inline] . unsafe fn copy_nonoverlapping_small(src: *const u8, dst: *mut u8, count: usize) { . debug_assert!(count <= 8); . 119,513 ( 0.00%) if count == 8 { . ptr::copy_nonoverlapping(src, dst, 8); . return; . } . . let mut i = 0; 132,304 ( 0.00%) if i + 3 < count { . ptr::copy_nonoverlapping(src.add(i), dst.add(i), 4); . i += 4; . } . 278,304 ( 0.00%) if i + 1 < count { . ptr::copy_nonoverlapping(src.add(i), dst.add(i), 2); 35,133 ( 0.00%) i += 2 . } . 132,304 ( 0.00%) if i < count { 112,350 ( 0.00%) *dst.add(i) = *src.add(i); . i += 1; . } . . debug_assert_eq!(i, count); . } . . // # Implementation . // -- line 124 ---------------------------------------- -- line 201 ---------------------------------------- . . hasher . } . . // A specialized write function for values with size <= 8. . #[inline] . fn short_write(&mut self, x: T) { . let size = mem::size_of::(); 1,826,853 ( 0.03%) let nbuf = self.nbuf; . debug_assert!(size <= 8); . debug_assert!(nbuf < BUFFER_SIZE); . debug_assert!(nbuf + size < BUFFER_WITH_SPILL_SIZE); . 12,356,166 ( 0.21%) if nbuf + size < BUFFER_SIZE { . unsafe { . // The memcpy call is optimized away because the size is known. . let dst = (self.buf.as_mut_ptr() as *mut u8).add(nbuf); . ptr::copy_nonoverlapping(&x as *const _ as *const u8, dst, size); . } . 3,830,522 ( 0.07%) self.nbuf = nbuf + size; . . return; . } . 652,720 ( 0.01%) unsafe { self.short_write_process_buffer(x) } . } . . // A specialized write function for values with size <= 8 that should only . // be called when the write would cause the buffer to fill. . // . // SAFETY: the write of `x` into `self.buf` starting at byte offset . // `self.nbuf` must cause `self.buf` to become fully initialized (and not . // overflow) if it wasn't already. . #[inline(never)] 195,199 ( 0.00%) unsafe fn short_write_process_buffer(&mut self, x: T) { . let size = mem::size_of::(); 195,199 ( 0.00%) let nbuf = self.nbuf; . debug_assert!(size <= 8); . debug_assert!(nbuf < BUFFER_SIZE); . debug_assert!(nbuf + size >= BUFFER_SIZE); . debug_assert!(nbuf + size < BUFFER_WITH_SPILL_SIZE); . . // Copy first part of input into end of buffer, possibly into spill . // element. The memcpy call is optimized away because the size is known. . let dst = (self.buf.as_mut_ptr() as *mut u8).add(nbuf); . ptr::copy_nonoverlapping(&x as *const _ as *const u8, dst, size); . . // Process buffer. . for i in 0..BUFFER_CAPACITY { 1,951,990 ( 0.03%) let elem = self.buf.get_unchecked(i).assume_init().to_le(); 1,561,592 ( 0.03%) self.state.v3 ^= elem; . Sip24Rounds::c_rounds(&mut self.state); 1,756,791 ( 0.03%) self.state.v0 ^= elem; . } . . // Copy remaining input into start of buffer by copying size - 1 . // elements from spill (at most size - 1 bytes could have overflowed . // into the spill). The memcpy call is optimized away because the size . // is known. And the whole copy is optimized away for size == 1. . let src = self.buf.get_unchecked(BUFFER_SPILL_INDEX) as *const _ as *const u8; . ptr::copy_nonoverlapping(src, self.buf.as_mut_ptr() as *mut u8, size - 1); . . // This function should only be called when the write fills the buffer. . // Therefore, when size == 1, the new `self.nbuf` must be zero. The size . // is statically known, so the branch is optimized away. 918,575 ( 0.02%) self.nbuf = if size == 1 { 0 } else { nbuf + size - BUFFER_SIZE }; 780,796 ( 0.01%) self.processed += BUFFER_SIZE; 390,398 ( 0.01%) } . . // A write function for byte slices. . #[inline] . fn slice_write(&mut self, msg: &[u8]) { . let length = msg.len(); 18,141 ( 0.00%) let nbuf = self.nbuf; . debug_assert!(nbuf < BUFFER_SIZE); . 400,940 ( 0.01%) if nbuf + length < BUFFER_SIZE { . unsafe { . let dst = (self.buf.as_mut_ptr() as *mut u8).add(nbuf); . 147,296 ( 0.00%) if length <= 8 { . copy_nonoverlapping_small(msg.as_ptr(), dst, length); . } else { . // This memcpy is *not* optimized away. . ptr::copy_nonoverlapping(msg.as_ptr(), dst, length); . } . } . 74,007 ( 0.00%) self.nbuf = nbuf + length; . . return; . } . 49,987 ( 0.00%) unsafe { self.slice_write_process_buffer(msg) } . } . . // A write function for byte slices that should only be called when the . // write would cause the buffer to fill. . // . // SAFETY: `self.buf` must be initialized up to the byte offset `self.nbuf`, . // and `msg` must contain enough bytes to initialize the rest of the element . // containing the byte offset `self.nbuf`. . #[inline(never)] 29,540 ( 0.00%) unsafe fn slice_write_process_buffer(&mut self, msg: &[u8]) { . let length = msg.len(); 5,908 ( 0.00%) let nbuf = self.nbuf; . debug_assert!(nbuf < BUFFER_SIZE); . debug_assert!(nbuf + length >= BUFFER_SIZE); . . // Always copy first part of input into current element of buffer. . // This function should only be called when the write fills the buffer, . // so we know that there is enough input to fill the current element. 17,724 ( 0.00%) let valid_in_elem = nbuf % ELEM_SIZE; 5,908 ( 0.00%) let needed_in_elem = ELEM_SIZE - valid_in_elem; . . let src = msg.as_ptr(); . let dst = (self.buf.as_mut_ptr() as *mut u8).add(nbuf); . copy_nonoverlapping_small(src, dst, needed_in_elem); . . // Process buffer. . . // Using `nbuf / ELEM_SIZE + 1` rather than `(nbuf + needed_in_elem) / . // ELEM_SIZE` to show the compiler that this loop's upper bound is > 0. . // We know that is true, because last step ensured we have a full . // element in the buffer. 11,816 ( 0.00%) let last = nbuf / ELEM_SIZE + 1; . . for i in 0..last { 45,610 ( 0.00%) let elem = self.buf.get_unchecked(i).assume_init().to_le(); 51,518 ( 0.00%) self.state.v3 ^= elem; . Sip24Rounds::c_rounds(&mut self.state); 91,220 ( 0.00%) self.state.v0 ^= elem; . } . . // Process the remaining element-sized chunks of input. . let mut processed = needed_in_elem; 11,816 ( 0.00%) let input_left = length - processed; 6,735 ( 0.00%) let elems_left = input_left / ELEM_SIZE; . let extra_bytes_left = input_left % ELEM_SIZE; . . for _ in 0..elems_left { 3,149 ( 0.00%) let elem = (msg.as_ptr().add(processed) as *const u64).read_unaligned().to_le(); 3,149 ( 0.00%) self.state.v3 ^= elem; . Sip24Rounds::c_rounds(&mut self.state); 3,149 ( 0.00%) self.state.v0 ^= elem; 6,298 ( 0.00%) processed += ELEM_SIZE; . } . . // Copy remaining input into start of buffer. . let src = msg.as_ptr().add(processed); . let dst = self.buf.as_mut_ptr() as *mut u8; . copy_nonoverlapping_small(src, dst, extra_bytes_left); . 5,908 ( 0.00%) self.nbuf = extra_bytes_left; 29,540 ( 0.00%) self.processed += nbuf + processed; 35,448 ( 0.00%) } . . #[inline] . pub fn finish128(mut self) -> (u64, u64) { . debug_assert!(self.nbuf < BUFFER_SIZE); . . // Process full elements in buffer. 53,589 ( 0.00%) let last = self.nbuf / ELEM_SIZE; . . // Since we're consuming self, avoid updating members for a potential . // performance gain. 71,452 ( 0.00%) let mut state = self.state; . . for i in 0..last { 58,553 ( 0.00%) let elem = unsafe { self.buf.get_unchecked(i).assume_init().to_le() }; 58,553 ( 0.00%) state.v3 ^= elem; . Sip24Rounds::c_rounds(&mut state); 58,553 ( 0.00%) state.v0 ^= elem; . } . . // Get remaining partial element. 35,726 ( 0.00%) let elem = if self.nbuf % ELEM_SIZE != 0 { . unsafe { . // Ensure element is initialized by writing zero bytes. At most . // `ELEM_SIZE - 1` are required given the above check. It's safe . // to write this many because we have the spill and we maintain . // `self.nbuf` such that this write will start before the spill. . let dst = (self.buf.as_mut_ptr() as *mut u8).add(self.nbuf); . ptr::write_bytes(dst, 0, ELEM_SIZE - 1); 14,697 ( 0.00%) self.buf.get_unchecked(last).assume_init().to_le() . } . } else { . 0 . }; . . // Finalize the hash. 50,423 ( 0.00%) let length = self.processed + self.nbuf; 35,724 ( 0.00%) let b: u64 = ((length as u64 & 0xff) << 56) | elem; . 17,862 ( 0.00%) state.v3 ^= b; . Sip24Rounds::c_rounds(&mut state); 17,862 ( 0.00%) state.v0 ^= b; . 17,862 ( 0.00%) state.v2 ^= 0xee; . Sip24Rounds::d_rounds(&mut state); 54,856 ( 0.00%) let _0 = state.v0 ^ state.v1 ^ state.v2 ^ state.v3; . 19,130 ( 0.00%) state.v1 ^= 0xdd; . Sip24Rounds::d_rounds(&mut state); 19,130 ( 0.00%) let _1 = state.v0 ^ state.v1 ^ state.v2 ^ state.v3; . . (_0, _1) . } . } . . impl Hasher for SipHasher128 { . #[inline] . fn write_u8(&mut self, i: u8) { -- line 414 ---------------------------------------- -- line 471 ---------------------------------------- . } . . #[derive(Debug, Clone, Default)] . struct Sip24Rounds; . . impl Sip24Rounds { . #[inline] . fn c_rounds(state: &mut State) { 6,959,987 ( 0.12%) compress!(state); 7,469,491 ( 0.13%) compress!(state); . } . . #[inline] . fn d_rounds(state: &mut State) { 109,708 ( 0.00%) compress!(state); 109,708 ( 0.00%) compress!(state); 109,708 ( 0.00%) compress!(state); 91,847 ( 0.00%) compress!(state); . } . } 1,501,040 ( 0.03%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/at.rs -------------------------------------------------------------------------------- Ir -- line 44 ---------------------------------------- . . impl<'a, 'tcx> InferCtxt<'a, 'tcx> { . #[inline] . pub fn at( . &'a self, . cause: &'a ObligationCause<'tcx>, . param_env: ty::ParamEnv<'tcx>, . ) -> At<'a, 'tcx> { 141,112 ( 0.00%) At { infcx: self, cause, param_env } . } . } . . pub trait ToTrace<'tcx>: Relate<'tcx> + Copy { . fn to_trace( . tcx: TyCtxt<'tcx>, . cause: &ObligationCause<'tcx>, . a_is_expected: bool, . a: Self, . b: Self, . ) -> TypeTrace<'tcx>; . } . . impl<'a, 'tcx> At<'a, 'tcx> { . /// Hacky routine for equating two impl headers in coherence. 1,240 ( 0.00%) pub fn eq_impl_headers( . self, . expected: &ty::ImplHeader<'tcx>, . actual: &ty::ImplHeader<'tcx>, . ) -> InferResult<'tcx, ()> { . debug!("eq_impl_header({:?} = {:?})", expected, actual); 1,550 ( 0.00%) match (expected.trait_ref, actual.trait_ref) { . (Some(a_ref), Some(b_ref)) => self.eq(a_ref, b_ref), . (None, None) => self.eq(expected.self_ty, actual.self_ty), . _ => bug!("mk_eq_impl_headers given mismatched impl kinds"), . } 1,395 ( 0.00%) } . . /// Makes `a <: b`, where `a` may or may not be expected. . pub fn sub_exp(self, a_is_expected: bool, a: T, b: T) -> InferResult<'tcx, ()> . where . T: ToTrace<'tcx>, . { 2,554,166 ( 0.04%) self.trace_exp(a_is_expected, a, b).sub(a, b) . } . . /// Makes `actual <: expected`. For example, if type-checking a . /// call like `foo(x)`, where `foo: fn(i32)`, you might have . /// `sup(i32, x)`, since the "expected" type is the type that . /// appears in the signature. . pub fn sup(self, expected: T, actual: T) -> InferResult<'tcx, ()> . where -- line 94 ---------------------------------------- -- line 109 ---------------------------------------- . pub fn eq_exp(self, a_is_expected: bool, a: T, b: T) -> InferResult<'tcx, ()> . where . T: ToTrace<'tcx>, . { . self.trace_exp(a_is_expected, a, b).eq(a, b) . } . . /// Makes `expected <: actual`. 410 ( 0.00%) pub fn eq(self, expected: T, actual: T) -> InferResult<'tcx, ()> . where . T: ToTrace<'tcx>, . { 123 ( 0.00%) self.trace(expected, actual).eq(expected, actual) 369 ( 0.00%) } . 6,600 ( 0.00%) pub fn relate(self, expected: T, variance: ty::Variance, actual: T) -> InferResult<'tcx, ()> . where . T: ToTrace<'tcx>, . { 3,300 ( 0.00%) match variance { . ty::Variance::Covariant => self.sub(expected, actual), 1,980 ( 0.00%) ty::Variance::Invariant => self.eq(expected, actual), . ty::Variance::Contravariant => self.sup(expected, actual), . . // We could make this make sense but it's not readily . // exposed and I don't feel like dealing with it. Note . // that bivariance in general does a bit more than just . // *nothing*, it checks that the types are the same . // "modulo variance" basically. . ty::Variance::Bivariant => panic!("Bivariant given to `relate()`"), . } 5,940 ( 0.00%) } . . /// Computes the least-upper-bound, or mutual supertype, of two . /// values. The order of the arguments doesn't matter, but since . /// this can result in an error (e.g., if asked to compute LUB of . /// u32 and i32), it is meaningful to call one of them the . /// "expected type". . pub fn lub(self, expected: T, actual: T) -> InferResult<'tcx, T> . where -- line 148 ---------------------------------------- -- line 174 ---------------------------------------- . . /// Like `trace`, but the expected value is determined by the . /// boolean argument (if true, then the first argument `a` is the . /// "expected" value). . pub fn trace_exp(self, a_is_expected: bool, a: T, b: T) -> Trace<'a, 'tcx> . where . T: ToTrace<'tcx>, . { 5,559,417 ( 0.10%) let trace = ToTrace::to_trace(self.infcx.tcx, self.cause, a_is_expected, a, b); . Trace { at: self, trace, a_is_expected } . } . } . . impl<'a, 'tcx> Trace<'a, 'tcx> { . /// Makes `a <: b` where `a` may or may not be expected (if . /// `a_is_expected` is true, then `a` is expected). . #[instrument(skip(self), level = "debug")] . pub fn sub(self, a: T, b: T) -> InferResult<'tcx, ()> . where . T: Relate<'tcx>, . { 1,759,088 ( 0.03%) let Trace { at, trace, a_is_expected } = self; 7,567,337 ( 0.13%) at.infcx.commit_if_ok(|_| { 4,794,608 ( 0.08%) let mut fields = at.infcx.combine_fields(trace, at.param_env); 392,379 ( 0.01%) fields 1,029,891 ( 0.02%) .sub(a_is_expected) 2,651,876 ( 0.05%) .relate(a, b) 1,375,036 ( 0.02%) .map(move |_| InferOk { value: (), obligations: fields.obligations }) . }) . } . . /// Makes `a == b`; the expectation is set by the call to . /// `trace()`. . #[instrument(skip(self), level = "debug")] . pub fn eq(self, a: T, b: T) -> InferResult<'tcx, ()> . where . T: Relate<'tcx>, . { 343,742 ( 0.01%) let Trace { at, trace, a_is_expected } = self; 1,320,663 ( 0.02%) at.infcx.commit_if_ok(|_| { 821,409 ( 0.01%) let mut fields = at.infcx.combine_fields(trace, at.param_env); 176,293 ( 0.00%) fields 176,293 ( 0.00%) .equate(a_is_expected) 284,009 ( 0.00%) .relate(a, b) 235,264 ( 0.00%) .map(move |_| InferOk { value: (), obligations: fields.obligations }) . }) . } . . #[instrument(skip(self), level = "debug")] . pub fn lub(self, a: T, b: T) -> InferResult<'tcx, T> . where . T: Relate<'tcx>, . { 5,140 ( 0.00%) let Trace { at, trace, a_is_expected } = self; 22,616 ( 0.00%) at.infcx.commit_if_ok(|_| { 14,392 ( 0.00%) let mut fields = at.infcx.combine_fields(trace, at.param_env); 3,084 ( 0.00%) fields 3,084 ( 0.00%) .lub(a_is_expected) 4,112 ( 0.00%) .relate(a, b) 4,112 ( 0.00%) .map(move |t| InferOk { value: t, obligations: fields.obligations }) . }) . } . . #[instrument(skip(self), level = "debug")] . pub fn glb(self, a: T, b: T) -> InferResult<'tcx, T> . where . T: Relate<'tcx>, . { -- line 241 ---------------------------------------- -- line 253 ---------------------------------------- . impl<'tcx> ToTrace<'tcx> for Ty<'tcx> { . fn to_trace( . _: TyCtxt<'tcx>, . cause: &ObligationCause<'tcx>, . a_is_expected: bool, . a: Self, . b: Self, . ) -> TypeTrace<'tcx> { 235,998 ( 0.00%) TypeTrace { cause: cause.clone(), values: Types(ExpectedFound::new(a_is_expected, a, b)) } 67,428 ( 0.00%) } . } . . impl<'tcx> ToTrace<'tcx> for ty::Region<'tcx> { . fn to_trace( . _: TyCtxt<'tcx>, . cause: &ObligationCause<'tcx>, . a_is_expected: bool, . a: Self, . b: Self, . ) -> TypeTrace<'tcx> { 176,659 ( 0.00%) TypeTrace { cause: cause.clone(), values: Regions(ExpectedFound::new(a_is_expected, a, b)) } 50,474 ( 0.00%) } . } . . impl<'tcx> ToTrace<'tcx> for &'tcx Const<'tcx> { . fn to_trace( . _: TyCtxt<'tcx>, . cause: &ObligationCause<'tcx>, . a_is_expected: bool, . a: Self, . b: Self, . ) -> TypeTrace<'tcx> { . TypeTrace { cause: cause.clone(), values: Consts(ExpectedFound::new(a_is_expected, a, b)) } . } . } . . impl<'tcx> ToTrace<'tcx> for ty::TraitRef<'tcx> { 46,984 ( 0.00%) fn to_trace( . _: TyCtxt<'tcx>, . cause: &ObligationCause<'tcx>, . a_is_expected: bool, . a: Self, . b: Self, . ) -> TypeTrace<'tcx> { 117,460 ( 0.00%) TypeTrace { . cause: cause.clone(), 93,968 ( 0.00%) values: TraitRefs(ExpectedFound::new(a_is_expected, a, b)), . } 93,968 ( 0.00%) } . } . . impl<'tcx> ToTrace<'tcx> for ty::PolyTraitRef<'tcx> { 637,512 ( 0.01%) fn to_trace( . _: TyCtxt<'tcx>, . cause: &ObligationCause<'tcx>, . a_is_expected: bool, . a: Self, . b: Self, . ) -> TypeTrace<'tcx> { 1,593,780 ( 0.03%) TypeTrace { . cause: cause.clone(), 5,737,608 ( 0.10%) values: PolyTraitRefs(ExpectedFound::new(a_is_expected, a, b)), . } 1,275,024 ( 0.02%) } . } . . impl<'tcx> ToTrace<'tcx> for ty::ProjectionTy<'tcx> { 10,356 ( 0.00%) fn to_trace( . tcx: TyCtxt<'tcx>, . cause: &ObligationCause<'tcx>, . a_is_expected: bool, . a: Self, . b: Self, . ) -> TypeTrace<'tcx> { . let a_ty = tcx.mk_projection(a.item_def_id, a.substs); . let b_ty = tcx.mk_projection(b.item_def_id, b.substs); 6,041 ( 0.00%) TypeTrace { . cause: cause.clone(), . values: Types(ExpectedFound::new(a_is_expected, a_ty, b_ty)), . } 7,767 ( 0.00%) } . } 385,378 ( 0.01%) -------------------------------------------------------------------------------- -- 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 . // . 8,085,376 ( 0.14%) if layout.align() <= MIN_ALIGN && layout.align() <= layout.size() { 6,064,032 ( 0.10%) 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. 149,924 ( 0.00%) if layout.align() <= MIN_ALIGN && layout.align() <= layout.size() { 224,886 ( 0.00%) 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) { 2,058,813 ( 0.04%) libc::free(ptr as *mut libc::c_void) . } . . #[inline] . unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 { 637,048 ( 0.01%) if layout.align() <= MIN_ALIGN && layout.align() <= new_size { 1,274,096 ( 0.02%) libc::realloc(ptr as *mut libc::c_void, new_size) as *mut u8 . } else { . realloc_fallback(self, ptr, layout, new_size) . } . } . } . . cfg_if::cfg_if! { . if #[cfg(any( -- line 56 ---------------------------------------- -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/.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 { 696 ( 0.00%) fn clone(&self) -> Self { 6,451 ( 0.00%) HashMap { . hash_builder: self.hash_builder.clone(), 1,294 ( 0.00%) table: self.table.clone(), . } 783 ( 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); . } . } . . /// 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)] 10 ( 0.00%) pub(crate) fn make_hasher(hash_builder: &S) -> impl Fn(&(Q, V)) -> u64 + '_ . where . K: Borrow, . Q: Hash, . S: BuildHasher, . { 290,067 ( 0.01%) move |val| make_hash::(hash_builder, &val.0) 15 ( 0.00%) } . . /// 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)] 12 ( 0.00%) fn equivalent_key(k: &Q) -> impl Fn(&(K, V)) -> bool + '_ . where . K: Borrow, . Q: ?Sized + Eq, . { 656,402 ( 0.01%) move |x| k.eq(x.0.borrow()) 18 ( 0.00%) } . . /// 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, . { 1,926,802 ( 0.03%) 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)] 13 ( 0.00%) pub(crate) fn make_hash(hash_builder: &S, val: &Q) -> u64 . where . K: Borrow, . Q: Hash + ?Sized, . S: BuildHasher, . { 2,090 ( 0.00%) hash_builder.hash_one(val) 14 ( 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 275 ---------------------------------------- . 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)] 9 ( 0.00%) pub(crate) fn make_insert_hash(hash_builder: &S, val: &K) -> u64 . where . K: Hash, . S: BuildHasher, . { 31,131 ( 0.00%) hash_builder.hash_one(val) 6 ( 0.00%) } . . #[cfg(feature = "ahash")] . impl HashMap { . /// Creates an empty `HashMap`. . /// . /// The hash map is initially created with a capacity of 0, so it will not allocate until it . /// is first inserted into. . /// -- line 297 ---------------------------------------- -- line 366 ---------------------------------------- . /// . /// 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)] 16 ( 0.00%) pub const fn with_hasher(hash_builder: S) -> Self { 478,040 ( 0.01%) Self { . hash_builder, 4 ( 0.00%) table: RawTable::new(), . } 4 ( 0.00%) } . . /// Creates an empty `HashMap` with the specified capacity, using `hash_builder` . /// to hash the keys. . /// . /// The hash map will be able to hold at least `capacity` elements without . /// reallocating. If `capacity` is 0, the hash map will not allocate. . /// . /// Warning: `hash_builder` is normally randomly generated, and -- line 387 ---------------------------------------- -- line 436 ---------------------------------------- . /// use hashbrown::HashMap; . /// 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)] 16 ( 0.00%) pub fn with_hasher_in(hash_builder: S, alloc: A) -> Self { 87 ( 0.00%) Self { . hash_builder, 4 ( 0.00%) table: RawTable::new_in(alloc), . } 4 ( 0.00%) } . . /// Creates an empty `HashMap` with the specified capacity, using `hash_builder` . /// to hash the keys. It will be allocated with the given allocator. . /// . /// The hash map will be able to hold at least `capacity` elements without . /// reallocating. If `capacity` is 0, the hash map will not allocate. . /// . /// Warning: `hash_builder` is normally randomly generated, and -- line 457 ---------------------------------------- -- line 662 ---------------------------------------- . /// use hashbrown::HashMap; . /// . /// 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)] 4 ( 0.00%) pub fn len(&self) -> usize { 37,447 ( 0.00%) self.table.len() 4 ( 0.00%) } . . /// Returns `true` if the map contains no elements. . /// . /// # Examples . /// . /// ``` . /// use hashbrown::HashMap; . /// . /// let mut a = HashMap::new(); . /// assert!(a.is_empty()); . /// a.insert(1, "a"); . /// assert!(!a.is_empty()); . /// ``` . #[cfg_attr(feature = "inline-more", inline)] 4 ( 0.00%) pub fn is_empty(&self) -> bool { 145,725 ( 0.00%) self.len() == 0 8 ( 0.00%) } . . /// Clears the map, returning all key-value pairs as an iterator. Keeps the . /// allocated memory for reuse. . /// . /// # Examples . /// . /// ``` . /// use hashbrown::HashMap; -- line 697 ---------------------------------------- -- 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 865 ---------------------------------------- . /// # Examples . /// . /// ``` . /// use hashbrown::HashMap; . /// let mut map: HashMap<&str, i32> = HashMap::new(); . /// map.reserve(10); . /// ``` . #[cfg_attr(feature = "inline-more", inline)] 8 ( 0.00%) pub fn reserve(&mut self, additional: usize) { 8 ( 0.00%) self.table 4 ( 0.00%) .reserve(additional, make_hasher::(&self.hash_builder)); 4 ( 0.00%) } . . /// Tries to reserve capacity for at least `additional` more elements to be inserted . /// in the given `HashMap`. The collection may reserve more space to avoid . /// frequent reallocations. . /// . /// # Errors . /// . /// If the capacity overflows, or the allocator reports a failure, then an error -- line 884 ---------------------------------------- -- 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)] 1,296 ( 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)) { 155 ( 0.00%) Entry::Occupied(OccupiedEntry { . hash, . key: Some(key), . elem, . table: self, . }) . } else { 1,465 ( 0.00%) Entry::Vacant(VacantEntry { . hash, . key, . table: self, . }) . } 1,620 ( 0.00%) } . . /// Gets the given key's corresponding entry by reference in the map for in-place manipulation. . /// . /// # Examples . /// . /// ``` . /// use hashbrown::HashMap; . /// -- line 995 ---------------------------------------- -- line 1047 ---------------------------------------- . /// ``` . #[inline] . pub fn get(&self, k: &Q) -> Option<&V> . where . K: Borrow, . Q: Hash + Eq, . { . // Avoid `Option::map` because it bloats LLVM IR. 1,442,954 ( 0.02%) 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 1086 ---------------------------------------- . // Avoid `Option::map` because it bloats LLVM IR. . match self.get_inner(k) { . Some(&(ref key, ref value)) => Some((key, value)), . None => None, . } . } . . #[inline] 20 ( 0.00%) fn get_inner(&self, k: &Q) -> Option<&(K, V)> . where . K: Borrow, . Q: Hash + Eq, . { 1,879,862 ( 0.03%) if self.table.is_empty() { 1 ( 0.00%) None . } else { 14 ( 0.00%) let hash = make_hash::(&self.hash_builder, k); 18 ( 0.00%) self.table.get(hash, equivalent_key(k)) . } 12 ( 0.00%) } . . /// 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 . /// the key type. . /// . /// [`Eq`]: https://doc.rust-lang.org/std/cmp/trait.Eq.html -- line 1113 ---------------------------------------- -- 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)] 1,275,183 ( 0.02%) pub fn contains_key(&self, k: &Q) -> bool . where . K: Borrow, . Q: Hash + Eq, . { 20 ( 0.00%) self.get_inner(k).is_some() 1,548,286 ( 0.03%) } . . /// 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)] 312 ( 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. 936 ( 0.00%) match self.get_inner_mut(k) { . Some(&mut (_, ref mut v)) => Some(v), . None => None, . } 624 ( 0.00%) } . . #[inline] . fn get_inner_mut(&mut self, k: &Q) -> Option<&mut (K, V)> . where . K: Borrow, . Q: Hash + Eq, . { 312 ( 0.00%) if self.table.is_empty() { . None . } else { . let hash = make_hash::(&self.hash_builder, k); . self.table.get_mut(hash, equivalent_key(k)) . } . } . . /// Attempts to get mutable references to `N` values in the map at once. -- line 1219 ---------------------------------------- -- line 1495 ---------------------------------------- . /// assert_eq!(map.insert(37, "a"), None); . /// assert_eq!(map.is_empty(), false); . /// . /// map.insert(37, "b"); . /// assert_eq!(map.insert(37, "c"), Some("b")); . /// assert_eq!(map[&37], "c"); . /// ``` . #[cfg_attr(feature = "inline-more", inline)] 7,184,708 ( 0.12%) pub fn insert(&mut self, k: K, v: V) -> Option { 24 ( 0.00%) let hash = make_insert_hash::(&self.hash_builder, &k); 1,067 ( 0.00%) if let Some((_, item)) = self.table.get_mut(hash, equivalent_key(&k)) { 4 ( 0.00%) Some(mem::replace(item, v)) . } else { 3,205,650 ( 0.06%) self.table 3,723,126 ( 0.06%) .insert(hash, (k, v), make_hasher::(&self.hash_builder)); 443,410 ( 0.01%) None . } 6,577,399 ( 0.11%) } . . /// 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)] 117,135 ( 0.00%) pub fn remove(&mut self, k: &Q) -> Option . where . K: Borrow, . Q: Hash + Eq, . { . // Avoid `Option::map` because it bloats LLVM IR. 1,287,687 ( 0.02%) match self.remove_entry(k) { 42,350 ( 0.00%) Some((_, v)) => Some(v), 115,538 ( 0.00%) None => None, . } 253,869 ( 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); 550,274 ( 0.01%) self.table.remove_entry(hash, equivalent_key(k)) . } . } . . impl HashMap { . /// Creates a raw entry builder for the HashMap. . /// . /// Raw entries provide the lowest level of control for searching and . /// manipulating a map. They must be manually initialized with a hash and -- line 1647 ---------------------------------------- -- line 1737 ---------------------------------------- . . impl Default for HashMap . where . S: Default, . A: Default + Allocator + Clone, . { . /// Creates an empty `HashMap`, with the `Default` value for the hasher and allocator. . #[cfg_attr(feature = "inline-more", inline)] 6 ( 0.00%) fn default() -> Self { 22 ( 0.00%) Self::with_hasher_in(Default::default(), Default::default()) 4 ( 0.00%) } . } . . impl Index<&Q> for HashMap . where . K: Eq + Hash + Borrow, . Q: Eq + Hash, . S: BuildHasher, . A: Allocator + Clone, -- line 1755 ---------------------------------------- -- 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, . { 10,058,770 ( 0.17%) 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)] 24,690,472 ( 0.43%) 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) 26,918,081 ( 0.47%) } . . #[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, . { 2,858,200 ( 0.05%) match self.map.table.find(hash, |(k, _)| is_match(k)) { 17,147,159 ( 0.30%) Some(elem) => RawEntryMut::Occupied(RawOccupiedEntryMut { . elem, . table: &mut self.map.table, . hash_builder: &self.map.hash_builder, . }), 697,307 ( 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)] 2,534,597 ( 0.04%) pub fn from_key_hashed_nocheck(self, hash: u64, k: &Q) -> Option<(&'a K, &'a V)> . where . K: Borrow, . Q: Eq, . { 3,243,781 ( 0.06%) self.from_hash(hash, equivalent(k)) 4,609,835 ( 0.08%) } . . #[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, . { 4,353,586 ( 0.08%) 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, . { 1,164,756 ( 0.02%) 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)] 4,158 ( 0.00%) fn into_iter(self) -> IntoIter { 74,930 ( 0.00%) IntoIter { 36,628 ( 0.00%) inner: self.table.into_iter(), . } 12,474 ( 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. 301,561 ( 0.01%) match self.inner.next() { . Some(x) => unsafe { . let r = x.as_ref(); 3,286 ( 0.00%) Some((&r.0, &r.1)) . }, . None => None, . } . } . #[cfg_attr(feature = "inline-more", inline)] . fn size_hint(&self) -> (usize, Option) { . self.inner.size_hint() . } -- line 3006 ---------------------------------------- -- line 3051 ---------------------------------------- . } . } . . impl Iterator for IntoIter { . type Item = (K, V); . . #[cfg_attr(feature = "inline-more", inline)] . fn next(&mut self) -> Option<(K, V)> { 3,726 ( 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)] 116 ( 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, . } 232 ( 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; 46 ( 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)] 113,106 ( 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. 91,701 ( 0.00%) let iter = iter.into_iter(); 45,097 ( 0.00%) let reserve = if self.is_empty() { 8 ( 0.00%) iter.size_hint().0 . } else { 3,981 ( 0.00%) (iter.size_hint().0 + 1) / 2 . }; 6 ( 0.00%) self.reserve(reserve); 26 ( 0.00%) iter.for_each(move |(k, v)| { 412,062 ( 0.01%) self.insert(k, v); 4 ( 0.00%) }); 79,035 ( 0.00%) } . . #[inline] . #[cfg(feature = "nightly")] . fn extend_one(&mut self, (k, v): (K, V)) { . self.insert(k, v); . } . . #[inline] -- line 4588 ---------------------------------------- 8,778,607 ( 0.15%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/.cargo/registry/src/github.com-1ecc6299db9ec823/smallvec-1.7.0/src/lib.rs -------------------------------------------------------------------------------- Ir -- line 294 ---------------------------------------- . #[allow(deprecated)] . impl From for CollectionAllocErr { . fn from(_: LayoutErr) -> Self { . CollectionAllocErr::CapacityOverflow . } . } . . fn infallible(result: Result) -> T { 440,744 ( 0.01%) match result { . Ok(x) => x, . Err(CollectionAllocErr::CapacityOverflow) => panic!("capacity overflow"), . Err(CollectionAllocErr::AllocErr { layout }) => alloc::alloc::handle_alloc_error(layout), . } . } . . /// FIXME: use `Layout::array` when we require a Rust version where it’s stable . /// https://github.com/rust-lang/rust/issues/55724 -- line 310 ---------------------------------------- -- line 376 ---------------------------------------- . fn len(&self) -> usize { . self.iter.len() . } . } . . impl<'a, T: Array> FusedIterator for Drain<'a, T> {} . . impl<'a, T: 'a + Array> Drop for Drain<'a, T> { 2,905 ( 0.00%) fn drop(&mut self) { . self.for_each(drop); . 1,245 ( 0.00%) if self.tail_len > 0 { . unsafe { . let source_vec = self.vec.as_mut(); . . // memmove back untouched tail, update to new length . let start = source_vec.len(); . let tail = self.tail_start; . if tail != start { . let src = source_vec.as_ptr().add(tail); . let dst = source_vec.as_mut_ptr().add(start); . ptr::copy(src, dst, self.tail_len); . } . source_vec.set_len(start + self.tail_len); . } . } 2,905 ( 0.00%) } . } . . #[cfg(feature = "union")] . union SmallVecData { . inline: core::mem::ManuallyDrop>, . heap: (*mut A::Item, usize), . } . -- line 410 ---------------------------------------- -- 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 { 69,504 ( 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) { 67,201 ( 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::() . ); 1,239,966 ( 0.02%) 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 579 ---------------------------------------- . /// let v: SmallVec<[u8; 3]> = SmallVec::with_capacity(100); . /// . /// assert!(v.is_empty()); . /// assert!(v.capacity() >= 100); . /// ``` . #[inline] . pub fn with_capacity(n: usize) -> Self { . let mut v = SmallVec::new(); 2 ( 0.00%) v.reserve_exact(n); . v . } . . /// Construct a new `SmallVec` from a `Vec`. . /// . /// Elements will be copied to the inline buffer if vec.capacity() <= Self::inline_capacity(). . /// . /// ```rust -- line 595 ---------------------------------------- -- 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(), 17,486 ( 0.00%) data: SmallVecData::from_inline(MaybeUninit::new(buf)), . } . } . . /// Constructs a new `SmallVec` on the stack from an `A` without . /// copying elements. Also sets the length, which must be less or . /// equal to the size of `buf`. . /// . /// ```rust -- line 651 ---------------------------------------- -- line 653 ---------------------------------------- . /// . /// let buf = [1, 2, 3, 4, 5, 0, 0, 0]; . /// let small_vec: SmallVec<_> = SmallVec::from_buf_and_len(buf, 5); . /// . /// assert_eq!(&*small_vec, &[1, 2, 3, 4, 5]); . /// ``` . #[inline] . pub fn from_buf_and_len(buf: A, len: usize) -> SmallVec { 12 ( 0.00%) assert!(len <= A::size()); 36 ( 0.00%) unsafe { SmallVec::from_buf_and_len_unchecked(MaybeUninit::new(buf), len) } . } . . /// Constructs a new `SmallVec` on the stack from an `A` without . /// copying elements. Also sets the length. The user is responsible . /// for ensuring that `len <= A::size()`. . /// . /// ```rust . /// use smallvec::SmallVec; -- line 670 ---------------------------------------- -- line 674 ---------------------------------------- . /// let small_vec: SmallVec<_> = unsafe { . /// SmallVec::from_buf_and_len_unchecked(MaybeUninit::new(buf), 5) . /// }; . /// . /// assert_eq!(&*small_vec, &[1, 2, 3, 4, 5]); . /// ``` . #[inline] . pub unsafe fn from_buf_and_len_unchecked(buf: MaybeUninit, len: usize) -> SmallVec { 6 ( 0.00%) SmallVec { . capacity: len, . data: SmallVecData::from_inline(buf), . } . } . . /// Sets the length of a vector. . /// . /// This will explicitly set the size of the vector, without actually . /// modifying its buffers, so it is up to the caller to ensure that the . /// vector is actually the specified size. . pub unsafe fn set_len(&mut self, new_len: usize) { . let (_, len_ptr, _) = self.triple_mut(); 201,027 ( 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 { . A::size() . } else { -- line 703 ---------------------------------------- -- 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 { 142,222 ( 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 { 7,237,636 ( 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 { 13,847,171 ( 0.24%) if self.spilled() { 889,356 ( 0.02%) 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 { 13,702,143 ( 0.24%) 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. . /// . /// Note 2: It is unspecified how many elements are removed from the vector . /// if the `Drain` value is leaked. . /// . /// # Panics . /// . /// Panics if the starting point is greater than the end point or if . /// the end point is greater than the length of the vector. 415 ( 0.00%) pub fn drain(&mut self, range: R) -> Drain<'_, A> . where . R: RangeBounds, . { . use core::ops::Bound::*; . . let len = self.len(); . let start = match range.start_bound() { . Included(&n) => n, -- line 800 ---------------------------------------- -- line 810 ---------------------------------------- . assert!(start <= end); . assert!(end <= len); . . unsafe { . self.set_len(start); . . let range_slice = slice::from_raw_parts_mut(self.as_mut_ptr().add(start), end - start); . 2,075 ( 0.00%) Drain { . tail_start: end, . tail_len: len - end, . iter: range_slice.iter(), . vec: NonNull::from(self), . } . } 415 ( 0.00%) } . . /// Append an item to the vector. . #[inline] 83,675 ( 0.00%) pub fn push(&mut self, value: A::Item) { . unsafe { . let (mut ptr, mut len, cap) = self.triple_mut(); 6,771,943 ( 0.12%) if *len == cap { 3,601 ( 0.00%) self.reserve(1); 38,241 ( 0.00%) let &mut (heap_ptr, ref mut heap_len) = self.data.heap_mut(); . ptr = heap_ptr; . len = heap_len; . } 26,869 ( 0.00%) ptr::write(ptr.add(*len), value); 6,553,820 ( 0.11%) *len += 1; . } 66,940 ( 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(); 616,136 ( 0.01%) if *len_ptr == 0 { . return None; . } 187,739 ( 0.00%) let last_index = *len_ptr - 1; 189,936 ( 0.00%) *len_ptr = last_index; 172,913 ( 0.00%) Some(ptr::read(ptr.add(last_index))) . } . } . . /// Moves all the elements of `other` into `self`, leaving `other` empty. . /// . /// # Example . /// . /// ``` -- line 861 ---------------------------------------- -- 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 336,760 ( 0.01%) pub fn try_grow(&mut self, new_cap: usize) -> Result<(), CollectionAllocErr> { . unsafe { 10,712 ( 0.00%) let (ptr, &mut len, cap) = self.triple_mut(); . let unspilled = !self.spilled(); 114,816 ( 0.00%) assert!(new_cap >= len); 114,816 ( 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); 114,816 ( 0.00%) } else if new_cap != cap { 111,760 ( 0.00%) let layout = layout_array::(new_cap)?; . debug_assert!(layout.size() > 0); . let new_alloc; 57,408 ( 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`. 5,813 ( 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(); . } 114,816 ( 0.00%) self.data = SmallVecData::from_heap(new_alloc, len); 198,878 ( 0.00%) self.capacity = new_cap; . } . Ok(()) . } 347,472 ( 0.01%) } . . /// 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] 995,786 ( 0.02%) pub fn reserve(&mut self, additional: usize) { 435,805 ( 0.01%) infallible(self.try_reserve(additional)) 1,133,488 ( 0.02%) } . . /// Reserve capacity for `additional` more elements to be inserted. . /// . /// May reserve more space to avoid frequent reallocations. 1,605,811 ( 0.03%) 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() 72,807 ( 0.00%) let (_, &mut len, cap) = self.triple_mut(); 2,921,123 ( 0.05%) if cap - len >= additional { . return Ok(()); . } . let new_cap = len . .checked_add(additional) . .and_then(usize::checked_next_power_of_two) . .ok_or(CollectionAllocErr::CapacityOverflow)?; 38,907 ( 0.00%) self.try_grow(new_cap) 1,801,627 ( 0.03%) } . . /// Reserve the minimum capacity for `additional` more elements to be inserted. . /// . /// Panics if the new capacity overflows `usize`. 2 ( 0.00%) pub fn reserve_exact(&mut self, additional: usize) { . infallible(self.try_reserve_exact(additional)) 2 ( 0.00%) } . . /// 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(); 293,038 ( 0.01%) if cap - len >= additional { . return Ok(()); . } . let new_cap = len . .checked_add(additional) . .ok_or(CollectionAllocErr::CapacityOverflow)?; 29,465 ( 0.00%) self.try_grow(new_cap) 29,449 ( 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(); 67,890 ( 0.00%) while len < *len_ptr { . let last_index = *len_ptr - 1; 1 ( 0.00%) *len_ptr = last_index; . ptr::drop_in_place(ptr.add(last_index)); . } . } . } . . /// Extracts a slice containing the entire vector. . /// . /// Equivalent to `&s[..]`. -- line 1017 ---------------------------------------- -- 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. 20 ( 0.00%) pub fn remove(&mut self, index: usize) -> A::Item { . unsafe { . let (mut ptr, len_ptr, _) = self.triple_mut(); 1,397 ( 0.00%) let len = *len_ptr; 7,920 ( 0.00%) assert!(index < len); 19,220 ( 0.00%) *len_ptr = len - 1; . ptr = ptr.add(index); . let item = ptr::read(ptr); 5,280 ( 0.00%) ptr::copy(ptr.add(1), ptr, len - index - 1); . item . } 25 ( 0.00%) } . . /// Insert an element at position `index`, shifting all elements after it to the right. . /// . /// Panics if `index` is out of bounds. 28,510 ( 0.00%) pub fn insert(&mut self, index: usize, element: A::Item) { . self.reserve(1); . . unsafe { . let (mut ptr, len_ptr, _) = self.triple_mut(); 2,790 ( 0.00%) let len = *len_ptr; 5,382 ( 0.00%) assert!(index <= len); 10,764 ( 0.00%) *len_ptr = len + 1; . ptr = ptr.add(index); 5,382 ( 0.00%) ptr::copy(ptr, ptr.add(1), len - index); . ptr::write(ptr, element); . } 18,145 ( 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. 125,235 ( 0.00%) pub fn retain bool>(&mut self, mut f: F) { . let mut del = 0; . let len = self.len(); . for i in 0..len { 151,452 ( 0.00%) if !f(&mut self[i]) { 12 ( 0.00%) del += 1; 52,858 ( 0.00%) } else if del > 0 { 18 ( 0.00%) self.swap(i - del, i); . } . } 27,830 ( 0.00%) self.truncate(len - del); 111,320 ( 0.00%) } . . /// Removes consecutive duplicate elements. 21 ( 0.00%) pub fn dedup(&mut self) . where . A::Item: PartialEq, . { . self.dedup_by(|a, b| a == b); 24 ( 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(); 6 ( 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, . ); 7,619 ( 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`. 1,020,381 ( 0.02%) pub fn insert_from_slice(&mut self, index: usize, slice: &[A::Item]) { . self.reserve(slice.len()); . . let len = self.len(); 327,216 ( 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()); 218,144 ( 0.00%) self.set_len(len + slice.len()); . } 872,576 ( 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(); 367,438 ( 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`. . /// . /// If `len` is less than the current length, the vector simply truncated. . /// . /// If `len` is greater than the current length, `value` is appended to the . /// vector until its length equals `len`. 30 ( 0.00%) pub fn resize(&mut self, len: usize, value: A::Item) { . let old_len = self.len(); . 6 ( 0.00%) if len > old_len { . self.extend(repeat(value).take(len - old_len)); . } else { . self.truncate(len); . } 21 ( 0.00%) } . . /// 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'])); . /// ``` -- line 1495 ---------------------------------------- -- line 1522 ---------------------------------------- . } . } . } . . impl ops::DerefMut for SmallVec { . #[inline] . fn deref_mut(&mut self) -> &mut [A::Item] { . unsafe { 47,453 ( 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 1691 ---------------------------------------- . fn from(array: A) -> SmallVec { . SmallVec::from_buf(array) . } . } . . impl> ops::Index for SmallVec { . type Output = I::Output; . 1 ( 0.00%) fn index(&self, index: I) -> &I::Output { . &(**self)[index] 3 ( 0.00%) } . } . . impl> ops::IndexMut for SmallVec { . fn index_mut(&mut self, index: I) -> &mut I::Output { . &mut (&mut **self)[index] . } . } . -- line 1709 ---------------------------------------- -- line 1716 ---------------------------------------- . SmallVec::extend_from_slice(self, other) . } . } . . impl FromIterator for SmallVec { . #[inline] . fn from_iter>(iterable: I) -> SmallVec { . let mut v = SmallVec::new(); 3,363,740 ( 0.06%) v.extend(iterable); . v . } . } . . impl Extend for SmallVec { 4,485,349 ( 0.08%) fn extend>(&mut self, iterable: I) { 2,644,610 ( 0.05%) let mut iter = iterable.into_iter(); . let (lower_size_bound, _) = iter.size_hint(); 273,334 ( 0.00%) self.reserve(lower_size_bound); . . unsafe { . let (ptr, len_ptr, cap) = self.triple_mut(); . let mut len = SetLenOnDrop::new(len_ptr); 3,681,735 ( 0.06%) while len.get() < cap { 5,393,513 ( 0.09%) if let Some(out) = iter.next() { 1,040 ( 0.00%) ptr::write(ptr.add(len.get()), out); . len.increment_len(1); . } else { . return; . } . } . } . 238,057 ( 0.00%) for elem in iter { 21,084 ( 0.00%) self.push(elem); . } 4,296,290 ( 0.07%) } . } . . impl fmt::Debug for SmallVec . where . A::Item: fmt::Debug, . { . fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { . f.debug_list().entries(self.iter()).finish() -- line 1759 ---------------------------------------- -- line 1764 ---------------------------------------- . #[inline] . fn default() -> SmallVec { . SmallVec::new() . } . } . . #[cfg(feature = "may_dangle")] . unsafe impl<#[may_dangle] A: Array> Drop for SmallVec { 740,204 ( 0.01%) fn drop(&mut self) { . unsafe { 2,963,311 ( 0.05%) if self.spilled() { . let (ptr, len) = self.data.heap(); . Vec::from_raw_parts(ptr, len, self.capacity); . } else { . ptr::drop_in_place(&mut self[..]); . } . } 823,905 ( 0.01%) } . } . . #[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 { 5,217 ( 0.00%) fn drop(&mut self) { 115,987 ( 0.00%) for _ in self {} 4,776 ( 0.00%) } . } . . impl Iterator for IntoIter { . type Item = A::Item; . . #[inline] . fn next(&mut self) -> Option { 726,033 ( 0.01%) if self.current == self.end { 1,647 ( 0.00%) None . } else { . unsafe { . let current = self.current; 415,499 ( 0.01%) self.current += 1; 30,112 ( 0.00%) Some(ptr::read(self.data.as_ptr().add(current))) . } . } . } . . #[inline] . fn size_hint(&self) -> (usize, Option) { 19,761 ( 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); 44,245 ( 0.00%) IntoIter { 399,684 ( 0.01%) data: self, . current: 0, . end: len, . } . } . } . } . . impl<'a, A: Array> IntoIterator for &'a SmallVec { -- line 1972 ---------------------------------------- -- line 2000 ---------------------------------------- . len: &'a mut usize, . local_len: usize, . } . . impl<'a> SetLenOnDrop<'a> { . #[inline] . fn new(len: &'a mut usize) -> Self { . SetLenOnDrop { 551,176 ( 0.01%) local_len: *len, . len, . } . } . . #[inline] . fn get(&self) -> usize { . self.local_len . } . . #[inline] . fn increment_len(&mut self, increment: usize) { 1,182,242 ( 0.02%) self.local_len += increment; . } . } . . impl<'a> Drop for SetLenOnDrop<'a> { . #[inline] . fn drop(&mut self) { 882,476 ( 0.02%) *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 ---------------------------------------- 10,856,876 ( 0.19%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/compiler/rustc_infer/src/infer/higher_ranked/mod.rs -------------------------------------------------------------------------------- Ir -- line 22 ---------------------------------------- . // Rather than checking the subtype relationship between `a` and `b` . // as-is, we need to do some extra work here in order to make sure . // that function subtyping works correctly with respect to regions . // . // Note: this is a subtle algorithm. For a full explanation, please see . // the rustc dev guide: . // . 638,644 ( 0.01%) let span = self.trace.cause.span; . 4,151,186 ( 0.07%) self.infcx.commit_if_ok(|_| { . // First, we instantiate each bound region in the supertype with a . // fresh placeholder region. 2,871,255 ( 0.05%) let b_prime = self.infcx.replace_bound_vars_with_placeholders(b); . . // Next, we instantiate each bound region in the subtype . // with a fresh region variable. These region variables -- . // but no other pre-existing region variables -- can name . // the placeholders. 637,512 ( 0.01%) let (a_prime, _) = 1,277,475 ( 0.02%) self.infcx.replace_bound_vars_with_fresh_vars(span, HigherRankedType, a); . . debug!("a_prime={:?}", a_prime); . debug!("b_prime={:?}", b_prime); . . // Compare types now that bound regions have been replaced. 2,234,501 ( 0.04%) let result = self.sub(a_is_expected).relate(a_prime, b_prime)?; . . debug!("higher_ranked_sub: OK result={:?}", result); . . // We related `a_prime` and `b_prime`, which just had any bound vars . // replaced with placeholders or infer vars, respectively. Relating . // them should not introduce new bound vars. . Ok(ty::Binder::dummy(result)) . }) -- line 56 ---------------------------------------- -- line 63 ---------------------------------------- . /// placeholder region. This is the first step of checking subtyping . /// when higher-ranked things are involved. . /// . /// **Important:** You have to be careful to not leak these placeholders, . /// for more information about how placeholders and HRTBs work, see . /// the [rustc dev guide]. . /// . /// [rustc dev guide]: https://rustc-dev-guide.rust-lang.org/traits/hrtb.html 2,099,485 ( 0.04%) pub fn replace_bound_vars_with_placeholders(&self, binder: ty::Binder<'tcx, T>) -> T . where . T: TypeFoldable<'tcx>, . { . // Figure out what the next universe will be, but don't actually create . // it until after we've done the substitution (in particular there may . // be no bound variables). This is a performance optimization, since the . // leak check for example can be skipped if no new universes are created . // (i.e., if there are no placeholders). 1,471,891 ( 0.03%) let next_universe = self.universe().next_universe(); . . let fld_r = |br: ty::BoundRegion| { 1,105 ( 0.00%) self.tcx.mk_region(ty::RePlaceholder(ty::PlaceholderRegion { 170 ( 0.00%) universe: next_universe, . name: br.kind, . })) . }; . . let fld_t = |bound_ty: ty::BoundTy| { . self.tcx.mk_ty(ty::Placeholder(ty::PlaceholderType { . universe: next_universe, . name: bound_ty.var, -- line 92 ---------------------------------------- -- line 98 ---------------------------------------- . val: ty::ConstKind::Placeholder(ty::PlaceholderConst { . universe: next_universe, . name: ty::BoundConst { var: bound_var, ty }, . }), . ty, . }) . }; . 7,973,761 ( 0.14%) let (result, map) = self.tcx.replace_bound_vars(binder, fld_r, fld_t, fld_c); . . // If there were higher-ranked regions to replace, then actually create . // the next universe (this avoids needlessly creating universes). 360,200 ( 0.01%) if !map.is_empty() { 103 ( 0.00%) let n_u = self.create_next_universe(); 47 ( 0.00%) assert_eq!(n_u, next_universe); . } . . debug!( . "replace_bound_vars_with_placeholders(\ . next_universe={:?}, \ . result={:?}, \ . map={:?})", . next_universe, result, map, . ); . . result 2,391,534 ( 0.04%) } . . /// See `infer::region_constraints::RegionConstraintCollector::leak_check`. 1,724,040 ( 0.03%) pub fn leak_check( . &self, . overly_polymorphic: bool, . snapshot: &CombinedSnapshot<'_, 'tcx>, . ) -> RelateResult<'tcx, ()> { . // If the user gave `-Zno-leak-check`, or we have been . // configured to skip the leak check, then skip the leak check . // completely. The leak check is deprecated. Any legitimate . // subtyping errors that it would have caught will now be . // caught later on, during region checking. However, we . // continue to use it for a transition period. 1,436,700 ( 0.02%) if self.tcx.sess.opts.debugging_opts.no_leak_check || self.skip_leak_check.get() { 2 ( 0.00%) return Ok(()); . } . 1,724,028 ( 0.03%) self.inner.borrow_mut().unwrap_region_constraints().leak_check( . self.tcx, . overly_polymorphic, . self.universe(), . snapshot, . ) 1,436,700 ( 0.02%) } . } 644,089 ( 0.01%) -------------------------------------------------------------------------------- -- Auto-annotated source: /usr/home/liquid/rust/worktree-benchmarking/library/alloc/src/collections/btree/search.rs -------------------------------------------------------------------------------- Ir -- line 40 ---------------------------------------- . . impl NodeRef { . /// Looks up a given key in a (sub)tree headed by the node, recursively. . /// Returns a `Found` with the handle of the matching KV, if any. Otherwise, . /// returns a `GoDown` with the handle of the leaf edge where the key belongs. . /// . /// The result is meaningful only if the tree is ordered by key, like the tree . /// in a `BTreeMap` is. 1,854,893 ( 0.03%) pub fn search_tree( . mut self, . key: &Q, . ) -> SearchResult . where . Q: Ord, . K: Borrow, . { . loop { . self = match self.search_node(key) { . Found(handle) => return Found(handle), 61,152 ( 0.00%) GoDown(handle) => match handle.force() { . Leaf(leaf) => return GoDown(leaf), . Internal(internal) => internal.descend(), . }, . } . } 931,847 ( 0.02%) } . . /// Descends to the nearest node where the edge matching the lower bound . /// of the range is different from the edge matching the upper bound, i.e., . /// the nearest node that has at least one key contained in the range. . /// . /// If found, returns an `Ok` with that node, the strictly ascending pair of . /// edge indices in the node delimiting the range, and the corresponding . /// pair of bounds for continuing the search in the child nodes, in case -- line 73 ---------------------------------------- -- line 202 ---------------------------------------- . unsafe fn find_key_index(&self, key: &Q, start_index: usize) -> IndexResult . where . Q: Ord, . K: Borrow, . { . let node = self.reborrow(); . let keys = node.keys(); . debug_assert!(start_index <= keys.len()); 1,143,832 ( 0.02%) for (offset, k) in unsafe { keys.get_unchecked(start_index..) }.iter().enumerate() { 3,469,173 ( 0.06%) match key.cmp(k.borrow()) { . Ordering::Greater => {} . Ordering::Equal => return IndexResult::KV(start_index + offset), . Ordering::Less => return IndexResult::Edge(start_index + offset), . } . } . IndexResult::Edge(keys.len()) . } . -- line 219 ---------------------------------------- 1,347,808 ( 0.02%) -------------------------------------------------------------------------------- The following files chosen for auto-annotation could not be found: -------------------------------------------------------------------------------- ./elf/../sysdeps/x86_64/dl-machine.h ./elf/dl-lookup.c ./malloc/malloc.c ./string/../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S -------------------------------------------------------------------------------- Ir -------------------------------------------------------------------------------- 2,835,307,245 (49.01%) events annotated