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| author | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-03-23 16:57:24 -0500 |
|---|---|---|
| committer | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-03-25 11:46:13 -0500 |
| commit | 412d10343168b05b8cf6c3683457cf9711d28046 (patch) | |
| tree | 5b141d96031b2ff23400528d4d046361553fad2f /scripts | |
| parent | 30d627d477d7255345a4b713cf352ac32d644d61 (diff) | |
| download | glibc-412d10343168b05b8cf6c3683457cf9711d28046.tar.xz glibc-412d10343168b05b8cf6c3683457cf9711d28046.zip | |
x86: Optimize strspn in strspn-c.c
Use _mm_cmpeq_epi8 and _mm_movemask_epi8 to get strlen instead of
_mm_cmpistri. Also change offset to unsigned to avoid unnecessary
sign extensions.
geometric_mean(N=20) of all benchmarks that dont fallback on
sse2; New / Original: .901
All string/memory tests pass.
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions