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| author | Sunil K Pandey <skpgkp2@gmail.com> | 2024-02-13 12:23:14 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2024-04-14 05:41:02 -0700 |
| commit | 423099a03264ea28298f47355d7811b8efe03c97 (patch) | |
| tree | f97479dc0237ab13396d8a07bab4e9016374e7b5 /sysdeps/x86_64/fpu/multiarch/e_exp2f.c | |
| parent | 04df8652eb1919da18d54b3dcd6db1675993d45d (diff) | |
| download | glibc-423099a03264ea28298f47355d7811b8efe03c97.tar.gz glibc-423099a03264ea28298f47355d7811b8efe03c97.tar.xz glibc-423099a03264ea28298f47355d7811b8efe03c97.zip | |
x86_64: Exclude SSE, AVX and FMA4 variants in libm multiarch
When glibc is built with ISA level 3 or higher by default, the resulting glibc binaries won't run on SSE or FMA4 processors. Exclude SSE, AVX and FMA4 variants in libm multiarch when ISA level 3 or higher is enabled by default. When glibc is built with ISA level 2 enabled by default, only keep SSE4.1 variant. Fixes BZ 31335. NB: elf/tst-valgrind-smoke test fails with ISA level 4, because valgrind doesn't support AVX512 instructions: https://bugs.kde.org/show_bug.cgi?id=383010 Reviewed-by: H.J. Lu <hjl.tools@gmail.com> (cherry picked from commit 9f78a7c1d0963282608da836b840f0d5ae1c478e)
Diffstat (limited to 'sysdeps/x86_64/fpu/multiarch/e_exp2f.c')
| -rw-r--r-- | sysdeps/x86_64/fpu/multiarch/e_exp2f.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/sysdeps/x86_64/fpu/multiarch/e_exp2f.c b/sysdeps/x86_64/fpu/multiarch/e_exp2f.c index 804fd6be85..06fe5028d6 100644 --- a/sysdeps/x86_64/fpu/multiarch/e_exp2f.c +++ b/sysdeps/x86_64/fpu/multiarch/e_exp2f.c @@ -16,25 +16,28 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -#include <libm-alias-float.h> -#include <libm-alias-finite.h> +#include <sysdeps/x86/isa-level.h> +#if MINIMUM_X86_ISA_LEVEL < AVX2_X86_ISA_LEVEL +# include <libm-alias-float.h> +# include <libm-alias-finite.h> extern float __redirect_exp2f (float); -#define SYMBOL_NAME exp2f -#include "ifunc-fma.h" +# define SYMBOL_NAME exp2f +# include "ifunc-fma.h" libc_ifunc_redirected (__redirect_exp2f, __exp2f, IFUNC_SELECTOR ()); -#ifdef SHARED +# ifdef SHARED versioned_symbol (libm, __ieee754_exp2f, exp2f, GLIBC_2_27); libm_alias_float_other (__exp2, exp2) -#else +# else libm_alias_float (__exp2, exp2) -#endif +# endif strong_alias (__exp2f, __ieee754_exp2f) libm_alias_finite (__exp2f, __exp2f) -#define __exp2f __exp2f_sse2 +# define __exp2f __exp2f_sse2 +#endif #include <sysdeps/ieee754/flt-32/e_exp2f.c> |