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| author | Huon Wilson <dbau.pp+github@gmail.com> | 2015-05-04 20:56:28 +1000 |
|---|---|---|
| committer | Huon Wilson <dbau.pp+github@gmail.com> | 2015-05-04 21:20:10 +1000 |
| commit | 4b46546af0d230a56b4f66d0fcc2ede7b89c09b5 (patch) | |
| tree | ddddaa43f4ca958d180cdea2790b3d7753ab1878 /src/test/codegen/stack-alloc-string-slice.cc | |
| parent | b59403606953d01391c1faa38d96062e3dfafa3d (diff) | |
| download | rust-4b46546af0d230a56b4f66d0fcc2ede7b89c09b5.tar.gz rust-4b46546af0d230a56b4f66d0fcc2ede7b89c09b5.zip | |
Make `BitVec::process` faster (branch free).
This makes the `bit::vec::bench::bench_bit_vec_big_union` benchmark go from `774 ns/iter (+/- 190)` to `602 ns/iter (+/- 5)`. (There's room for more work here too: if one can guarantee 128-bit alignment for the vector, the compiler actually optimises `union`, `intersection` etc. to SIMD instructions, which end up being ~5x faster that the original version, and 4x faster than the optimised version in this patch.)
Diffstat (limited to 'src/test/codegen/stack-alloc-string-slice.cc')
0 files changed, 0 insertions, 0 deletions