glibc/SOURCES/glibc-upstream-2.34-294.patch

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2022-11-15 07:04:49 +00:00
commit c51d8d383cfb92142b86d8d1822159f3bea10d16
Author: Noah Goldstein <goldstein.w.n@gmail.com>
Date: Thu Jun 16 15:01:08 2022 -0700
x86: Add BMI1/BMI2 checks for ISA_V3 check
BMI1/BMI2 are part of the ISA V3 requirements:
https://en.wikipedia.org/wiki/X86-64
And defined by GCC when building with `-march=x86-64-v3`
(cherry picked from commit 8da9f346cb2051844348785b8a932ec44489e0b7)
diff --git a/sysdeps/x86/isa-level.c b/sysdeps/x86/isa-level.c
index 49ef4aa6122072cf..07815381122c94c3 100644
--- a/sysdeps/x86/isa-level.c
+++ b/sysdeps/x86/isa-level.c
@@ -47,7 +47,8 @@
# endif
# if ISA_V2 && defined __AVX__ && defined __AVX2__ && defined __F16C__ \
- && defined __FMA__ && defined __LZCNT__ && defined HAVE_X86_MOVBE
+ && defined __FMA__ && defined __LZCNT__ && defined HAVE_X86_MOVBE \
+ && defined __BMI__ && defined __BMI2__
/* NB: ISAs in x86-64 ISA level v3 are used. */
# define ISA_V3 GNU_PROPERTY_X86_ISA_1_V3
# else