diff options
| author | bors <bors@rust-lang.org> | 2021-03-22 01:16:29 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2021-03-22 01:16:29 +0000 |
| commit | 35385770ae1ea86a911cc44ac43f856831e44b26 (patch) | |
| tree | 509eb08317fe567c9294f2162699bb310266f52c /compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp | |
| parent | 97663b6690689379aa0493deb494dfe14627c46b (diff) | |
| parent | 2d8be457434103bfeeea59f1882a15760f2a5c70 (diff) | |
| download | rust-35385770ae1ea86a911cc44ac43f856831e44b26.tar.gz rust-35385770ae1ea86a911cc44ac43f856831e44b26.zip | |
Auto merge of #79846 - the8472:inplace-tra, r=m-ou-se
Use TrustedRandomAccess for in-place iterators where possible This can speed up in-place iterators containing simple casts and transmutes from `Copy` types to any type of same size. `!Copy` types can't be optimized since `TrustedRandomAccess` isn't implemented for those iterators. ``` name on.b ns/iter o1.b ns/iter diff ns/iter diff % speedup vec::bench_transmute 20 (40000 MB/s) 12 (66666 MB/s) -8 -40.00% x 1.67 ```
Diffstat (limited to 'compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp')
0 files changed, 0 insertions, 0 deletions