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| author | bors <bors@rust-lang.org> | 2022-07-27 01:12:30 +0000 |
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| committer | bors <bors@rust-lang.org> | 2022-07-27 01:12:30 +0000 |
| commit | b573e10d21b69ebfadf41aa9c2f0a27919fe4480 (patch) | |
| tree | e4ec1b41755a3e7e6f4e299ba14473e08a578667 /compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp | |
| parent | 4d6d601c8a83284d6b23c253a3e2a060fd197316 (diff) | |
| parent | 4ba7cac359b0180add75d78929ebae4f90813fa1 (diff) | |
| download | rust-b573e10d21b69ebfadf41aa9c2f0a27919fe4480.tar.gz rust-b573e10d21b69ebfadf41aa9c2f0a27919fe4480.zip | |
Auto merge of #98553 - the8472:next_chunk_opt, r=Mark-Simulacrum
Optimized vec::IntoIter::next_chunk impl ``` x86_64v1, default test vec::bench_next_chunk ... bench: 696 ns/iter (+/- 22) x86_64v1, pr test vec::bench_next_chunk ... bench: 309 ns/iter (+/- 4) znver2, default test vec::bench_next_chunk ... bench: 17,272 ns/iter (+/- 117) znver2, pr test vec::bench_next_chunk ... bench: 211 ns/iter (+/- 3) ``` On znver2 the default impl seems to be slow due to different inlining decisions. It goes through `core::array::iter_next_chunk` which has a deep call tree.
Diffstat (limited to 'compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp')
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