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(parent: 02aa1f4) | patch
x86-64: Require BMI1/BMI2 for AVX2 strrchr and wcsrchr implementations
authorAurelien Jarno <aurelien@aurel32.net>
Mon, 3 Oct 2022 21:16:46 +0000 (23:16 +0200)
committerAurelien Jarno <aurelien@aurel32.net>
Mon, 3 Oct 2022 21:53:40 +0000 (23:53 +0200)
commit20152a849b34abe83c702b27b7276c96b191b644
tree78a8551ef0fa55c8c9fcbc44d9f665432f6649ddtree | snapshot
parent02aa1f4a5b6955f2cb384daa4e520d9c8078a078commit | diff
x86-64: Require BMI1/BMI2 for AVX2 strrchr and wcsrchr implementations

The AVX2 strrchr and wcsrchr implementation uses the 'blsmsk'
instruction which belongs to the BMI1 CPU feature and the 'shrx'
instruction, which belongs to the BMI2 CPU feature.

Fixes: df7e295d18ff ("x86: Optimize {str|wcs}rchr-avx2")
Partially resolves: BZ #29611

Reviewed-by: Noah Goldstein <goldstein.w.n@gmail.com>
(cherry picked from commit 7e8283170c5d6805b609a040801d819e362a6292)
sysdeps/x86_64/multiarch/ifunc-avx2.h diff | blob | blame | history
sysdeps/x86_64/multiarch/ifunc-impl-list.c diff | blob | blame | history
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