diff options
| author | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-03-24 18:56:12 -0500 |
|---|---|---|
| committer | Noah Goldstein <goldstein.w.n@gmail.com> | 2022-03-25 13:16:43 -0500 |
| commit | bbf81222343fed5cd704001a2ae0d86c71544151 (patch) | |
| tree | be61639b266f1452ecea891871f6f11482b0aa4c /sysdeps/x86_64/multiarch/ifunc-strcasecmp.h | |
| parent | 39399913a244a911edb1ff1e31dfe38e64177bb5 (diff) | |
| download | glibc-bbf81222343fed5cd704001a2ae0d86c71544151.tar.gz glibc-bbf81222343fed5cd704001a2ae0d86c71544151.tar.xz glibc-bbf81222343fed5cd704001a2ae0d86c71544151.zip | |
x86: Add AVX2 optimized str{n}casecmp
geometric_mean(N=40) of all benchmarks AVX2 / SSE42: .702 All string/memory tests pass. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
Diffstat (limited to 'sysdeps/x86_64/multiarch/ifunc-strcasecmp.h')
| -rw-r--r-- | sysdeps/x86_64/multiarch/ifunc-strcasecmp.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h b/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h index 9e3cc61ac0..c4de111fd0 100644 --- a/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h +++ b/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h @@ -23,12 +23,24 @@ extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (sse42) attribute_hidden; extern __typeof (REDIRECT_NAME) OPTIMIZE (avx) attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2) attribute_hidden; +extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_rtm) attribute_hidden; static inline void * IFUNC_SELECTOR (void) { const struct cpu_features* cpu_features = __get_cpu_features (); + if (CPU_FEATURE_USABLE_P (cpu_features, AVX2) + && CPU_FEATURES_ARCH_P (cpu_features, AVX_Fast_Unaligned_Load)) + { + if (CPU_FEATURE_USABLE_P (cpu_features, RTM)) + return OPTIMIZE (avx2_rtm); + + if (!CPU_FEATURES_ARCH_P (cpu_features, Prefer_No_VZEROUPPER)) + return OPTIMIZE (avx2); + } + if (CPU_FEATURE_USABLE_P (cpu_features, AVX)) return OPTIMIZE (avx); |