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| author | Noah Goldstein <goldstein.w.n@gmail.com> | 2021-04-19 17:48:10 -0400 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2021-04-19 15:08:04 -0700 |
| commit | f53790272ce7bdc5ecd14b45f65d0464d2a61a3a (patch) | |
| tree | 080054bf654d57c524271f86b8195d602d881ae4 /sysdeps/x86_64/multiarch/ifunc-impl-list.c | |
| parent | 83c5b368226c34a2f0a5287df40fc290b2b34359 (diff) | |
| download | glibc-f53790272ce7bdc5ecd14b45f65d0464d2a61a3a.tar.gz glibc-f53790272ce7bdc5ecd14b45f65d0464d2a61a3a.tar.xz glibc-f53790272ce7bdc5ecd14b45f65d0464d2a61a3a.zip | |
x86: Optimize less_vec evex and avx512 memset-vec-unaligned-erms.S
No bug. This commit adds optimized cased for less_vec memset case that uses the avx512vl/avx512bw mask store avoiding the excessive branches. test-memset and test-wmemset are passing. Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
Diffstat (limited to 'sysdeps/x86_64/multiarch/ifunc-impl-list.c')
| -rw-r--r-- | sysdeps/x86_64/multiarch/ifunc-impl-list.c | 40 |
1 files changed, 28 insertions, 12 deletions
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c index 0b0927b124..c377cab629 100644 --- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c +++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c @@ -204,19 +204,23 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, __memset_chk_avx2_unaligned_erms_rtm) IFUNC_IMPL_ADD (array, i, __memset_chk, (CPU_FEATURE_USABLE (AVX512VL) - && CPU_FEATURE_USABLE (AVX512BW)), + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (BMI2)), __memset_chk_evex_unaligned) IFUNC_IMPL_ADD (array, i, __memset_chk, (CPU_FEATURE_USABLE (AVX512VL) - && CPU_FEATURE_USABLE (AVX512BW)), + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (BMI2)), __memset_chk_evex_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memset_chk, (CPU_FEATURE_USABLE (AVX512VL) - && CPU_FEATURE_USABLE (AVX512BW)), + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (BMI2)), __memset_chk_avx512_unaligned_erms) IFUNC_IMPL_ADD (array, i, __memset_chk, (CPU_FEATURE_USABLE (AVX512VL) - && CPU_FEATURE_USABLE (AVX512BW)), + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (BMI2)), __memset_chk_avx512_unaligned) IFUNC_IMPL_ADD (array, i, __memset_chk, CPU_FEATURE_USABLE (AVX512F), @@ -247,19 +251,23 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, __memset_avx2_unaligned_erms_rtm) IFUNC_IMPL_ADD (array, i, memset, (CPU_FEATURE_USABLE (AVX512VL) - && CPU_FEATURE_USABLE (AVX512BW)), + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (BMI2)), __memset_evex_unaligned) IFUNC_IMPL_ADD (array, i, memset, (CPU_FEATURE_USABLE (AVX512VL) - && CPU_FEATURE_USABLE (AVX512BW)), + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (BMI2)), __memset_evex_unaligned_erms) IFUNC_IMPL_ADD (array, i, memset, (CPU_FEATURE_USABLE (AVX512VL) - && CPU_FEATURE_USABLE (AVX512BW)), + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (BMI2)), __memset_avx512_unaligned_erms) IFUNC_IMPL_ADD (array, i, memset, (CPU_FEATURE_USABLE (AVX512VL) - && CPU_FEATURE_USABLE (AVX512BW)), + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (BMI2)), __memset_avx512_unaligned) IFUNC_IMPL_ADD (array, i, memset, CPU_FEATURE_USABLE (AVX512F), @@ -728,10 +736,14 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, && CPU_FEATURE_USABLE (RTM)), __wmemset_avx2_unaligned_rtm) IFUNC_IMPL_ADD (array, i, wmemset, - CPU_FEATURE_USABLE (AVX512VL), + (CPU_FEATURE_USABLE (AVX512VL) + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (BMI2)), __wmemset_evex_unaligned) IFUNC_IMPL_ADD (array, i, wmemset, - CPU_FEATURE_USABLE (AVX512VL), + (CPU_FEATURE_USABLE (AVX512VL) + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (BMI2)), __wmemset_avx512_unaligned)) #ifdef SHARED @@ -935,10 +947,14 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array, CPU_FEATURE_USABLE (AVX2), __wmemset_chk_avx2_unaligned) IFUNC_IMPL_ADD (array, i, __wmemset_chk, - CPU_FEATURE_USABLE (AVX512VL), + (CPU_FEATURE_USABLE (AVX512VL) + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (BMI2)), __wmemset_chk_evex_unaligned) IFUNC_IMPL_ADD (array, i, __wmemset_chk, - CPU_FEATURE_USABLE (AVX512F), + (CPU_FEATURE_USABLE (AVX512VL) + && CPU_FEATURE_USABLE (AVX512BW) + && CPU_FEATURE_USABLE (BMI2)), __wmemset_chk_avx512_unaligned)) #endif |