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x86-64: Require BMI2 for __strlen_evex and __strnlen_evex

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Since __strlen_evex and __strnlen_evex added by

commit 1fd8c163a8
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Fri Mar 5 06:24:52 2021 -0800

    x86-64: Add ifunc-avx2.h functions with 256-bit EVEX

use sarx:

c4 e2 6a f7 c0       	sarx   %edx,%eax,%eax

require BMI2 for __strlen_evex and __strnlen_evex in ifunc-impl-list.c.
ifunc-avx2.h already requires BMI2 for EVEX implementation.

(cherry picked from commit 55bf411b45)
This commit is contained in:
H.J. Lu 2021-04-19 07:07:21 -07:00
parent c3535cb6cd
commit 3fc179e2b2
1 changed files with 4 additions and 2 deletions
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6
sysdeps/x86_64/multiarch/ifunc-impl-list.c
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@ -293,7 +293,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__strlen_avx2_rtm)
IFUNC_IMPL_ADD (array, i, strlen,
(HAS_ARCH_FEATURE (AVX512VL_Usable)
&& HAS_ARCH_FEATURE (AVX512BW_Usable)),
&& HAS_ARCH_FEATURE (AVX512BW_Usable)
&& HAS_CPU_FEATURE (BMI2)),
__strlen_evex)
IFUNC_IMPL_ADD (array, i, strlen, 1, __strlen_sse2))
@ -308,7 +309,8 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__strnlen_avx2_rtm)
IFUNC_IMPL_ADD (array, i, strnlen,
(HAS_ARCH_FEATURE (AVX512VL_Usable)
&& HAS_ARCH_FEATURE (AVX512BW_Usable)),
&& HAS_ARCH_FEATURE (AVX512BW_Usable)
&& HAS_CPU_FEATURE (BMI2)),
__strnlen_evex)
IFUNC_IMPL_ADD (array, i, strnlen, 1, __strnlen_sse2))