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authorSunil K Pandey <skpgkp2@gmail.com>2022-09-28 15:53:49 -0700
committerSunil K Pandey <skpgkp2@gmail.com>2022-09-28 18:08:36 -0700
commitd4b75594574ab8a9c2c41209cd8c62aac76b5a04 (patch)
tree653df1dfcd58c260e67e73615d887afb1c178ffd
parentb8bb48a18d9e5af6f2f036012c51cba0ee758e9d (diff)
x86-64: Require BMI2 for avx2 functions [BZ #29611]
This patch fixes BZ #29611
-rw-r--r--sysdeps/x86_64/multiarch/ifunc-impl-list.c38
1 files changed, 28 insertions, 10 deletions
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index f76326e0b2..e712b148f5 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -41,10 +41,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/memchr.c. */
IFUNC_IMPL (i, name, memchr,
IFUNC_IMPL_ADD (array, i, memchr,
- HAS_ARCH_FEATURE (AVX2_Usable),
+ (HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)),
__memchr_avx2)
IFUNC_IMPL_ADD (array, i, memchr,
(HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)
&& HAS_CPU_FEATURE (RTM)),
__memchr_avx2_rtm)
IFUNC_IMPL_ADD (array, i, memchr,
@@ -166,15 +168,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/memrchr.c. */
IFUNC_IMPL (i, name, memrchr,
IFUNC_IMPL_ADD (array, i, memrchr,
- HAS_ARCH_FEATURE (AVX2_Usable),
+ (HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)),
__memrchr_avx2)
IFUNC_IMPL_ADD (array, i, memrchr,
(HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)
&& HAS_CPU_FEATURE (RTM)),
__memrchr_avx2_rtm)
IFUNC_IMPL_ADD (array, i, memrchr,
(HAS_ARCH_FEATURE (AVX512VL_Usable)
- && HAS_ARCH_FEATURE (AVX512BW_Usable)),
+ && HAS_ARCH_FEATURE (AVX512BW_Usable)
+ && HAS_CPU_FEATURE (BMI2)),
__memrchr_evex)
IFUNC_IMPL_ADD (array, i, memrchr, 1, __memrchr_sse2))
@@ -269,10 +274,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/rawmemchr.c. */
IFUNC_IMPL (i, name, rawmemchr,
IFUNC_IMPL_ADD (array, i, rawmemchr,
- HAS_ARCH_FEATURE (AVX2_Usable),
+ (HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)),
__rawmemchr_avx2)
IFUNC_IMPL_ADD (array, i, rawmemchr,
(HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)
&& HAS_CPU_FEATURE (RTM)),
__rawmemchr_avx2_rtm)
IFUNC_IMPL_ADD (array, i, rawmemchr,
@@ -437,15 +444,18 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/strrchr.c. */
IFUNC_IMPL (i, name, strrchr,
IFUNC_IMPL_ADD (array, i, strrchr,
- HAS_ARCH_FEATURE (AVX2_Usable),
+ (HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)),
__strrchr_avx2)
IFUNC_IMPL_ADD (array, i, strrchr,
(HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)
&& HAS_CPU_FEATURE (RTM)),
__strrchr_avx2_rtm)
IFUNC_IMPL_ADD (array, i, strrchr,
(HAS_ARCH_FEATURE (AVX512VL_Usable)
- && HAS_ARCH_FEATURE (AVX512BW_Usable)),
+ && HAS_ARCH_FEATURE (AVX512BW_Usable)
+ && HAS_CPU_FEATURE (BMI2)),
__strrchr_evex)
IFUNC_IMPL_ADD (array, i, strrchr, 1, __strrchr_sse2))
@@ -596,10 +606,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/wcsrchr.c. */
IFUNC_IMPL (i, name, wcsrchr,
IFUNC_IMPL_ADD (array, i, wcsrchr,
- HAS_ARCH_FEATURE (AVX2_Usable),
+ (HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)),
__wcsrchr_avx2)
IFUNC_IMPL_ADD (array, i, wcsrchr,
(HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)
&& HAS_CPU_FEATURE (RTM)),
__wcsrchr_avx2_rtm)
IFUNC_IMPL_ADD (array, i, wcsrchr,
@@ -612,10 +624,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/wcscmp.c. */
IFUNC_IMPL (i, name, wcscmp,
IFUNC_IMPL_ADD (array, i, wcscmp,
- HAS_ARCH_FEATURE (AVX2_Usable),
+ (HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)),
__wcscmp_avx2)
IFUNC_IMPL_ADD (array, i, wcscmp,
(HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)
&& HAS_CPU_FEATURE (RTM)),
__wcscmp_avx2_rtm)
IFUNC_IMPL_ADD (array, i, wcscmp,
@@ -628,10 +642,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/wcsncmp.c. */
IFUNC_IMPL (i, name, wcsncmp,
IFUNC_IMPL_ADD (array, i, wcsncmp,
- HAS_ARCH_FEATURE (AVX2_Usable),
+ (HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)),
__wcsncmp_avx2)
IFUNC_IMPL_ADD (array, i, wcsncmp,
(HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)
&& HAS_CPU_FEATURE (RTM)),
__wcsncmp_avx2_rtm)
IFUNC_IMPL_ADD (array, i, wcsncmp,
@@ -692,10 +708,12 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
/* Support sysdeps/x86_64/multiarch/wmemchr.c. */
IFUNC_IMPL (i, name, wmemchr,
IFUNC_IMPL_ADD (array, i, wmemchr,
- HAS_ARCH_FEATURE (AVX2_Usable),
+ (HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)),
__wmemchr_avx2)
IFUNC_IMPL_ADD (array, i, wmemchr,
(HAS_ARCH_FEATURE (AVX2_Usable)
+ && HAS_CPU_FEATURE (BMI2)
&& HAS_CPU_FEATURE (RTM)),
__wmemchr_avx2_rtm)
IFUNC_IMPL_ADD (array, i, wmemchr,