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| author | Sunil K Pandey <skpgkp2@gmail.com> | 2024-02-13 12:23:14 -0800 |
|---|---|---|
| committer | Sunil K Pandey <skpgkp2@gmail.com> | 2024-02-25 13:20:51 -0800 |
| commit | 9f78a7c1d0963282608da836b840f0d5ae1c478e (patch) | |
| tree | bb6e79f075d7fbc5b2b6e39d4551f8a8b0dda332 /sysdeps/x86_64/fpu/multiarch/s_nearbyint-sse4_1.S | |
| parent | f31d677fd69fb68c8b7a3c4cdaa6e9a1bd46d6a4 (diff) | |
| download | glibc-9f78a7c1d0963282608da836b840f0d5ae1c478e.tar.gz glibc-9f78a7c1d0963282608da836b840f0d5ae1c478e.tar.xz glibc-9f78a7c1d0963282608da836b840f0d5ae1c478e.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>
Diffstat (limited to 'sysdeps/x86_64/fpu/multiarch/s_nearbyint-sse4_1.S')
| -rw-r--r-- | sysdeps/x86_64/fpu/multiarch/s_nearbyint-sse4_1.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/sysdeps/x86_64/fpu/multiarch/s_nearbyint-sse4_1.S b/sysdeps/x86_64/fpu/multiarch/s_nearbyint-sse4_1.S index 674f7eb40a..9d84410a1f 100644 --- a/sysdeps/x86_64/fpu/multiarch/s_nearbyint-sse4_1.S +++ b/sysdeps/x86_64/fpu/multiarch/s_nearbyint-sse4_1.S @@ -17,8 +17,20 @@ #include <sysdep.h> +#include <sysdeps/x86/isa-level.h> +#if MINIMUM_X86_ISA_LEVEL == SSE4_1_X86_ISA_LEVEL +# include <libm-alias-double.h> +# define __nearbyint_sse41 __nearbyint + .text +#else .section .text.sse4.1,"ax",@progbits +#endif + ENTRY(__nearbyint_sse41) roundsd $0xc, %xmm0, %xmm0 ret END(__nearbyint_sse41) + +#if MINIMUM_X86_ISA_LEVEL == SSE4_1_X86_ISA_LEVEL +libm_alias_double (__nearbyint, nearbyint) +#endif |