diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2015-02-17 02:30:01 -0500 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2015-02-17 02:30:01 -0500 |
| commit | 2511fe206c59793d25bf0e3e24a185545b3a93b6 (patch) | |
| tree | 1a46462f9b40a58c7cb7f9751d4db20df56668de /sysdeps/x86_64/multiarch/init-arch.c | |
| parent | 1b08ac828aeafeff86fa67108a8ad285d32f70e6 (diff) | |
| parent | 4d54424420c6300efbf57a7b9aa8635a8b8c1942 (diff) | |
| download | glibc-2511fe206c59793d25bf0e3e24a185545b3a93b6.tar.gz glibc-2511fe206c59793d25bf0e3e24a185545b3a93b6.tar.xz glibc-2511fe206c59793d25bf0e3e24a185545b3a93b6.zip | |
Merge branch 'release/2.20/master' into 'gentoo/2.20'
Diffstat (limited to 'sysdeps/x86_64/multiarch/init-arch.c')
| -rw-r--r-- | sysdeps/x86_64/multiarch/init-arch.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sysdeps/x86_64/multiarch/init-arch.c b/sysdeps/x86_64/multiarch/init-arch.c index 2a6dcb78d8..f7c1bbe0db 100644 --- a/sysdeps/x86_64/multiarch/init-arch.c +++ b/sysdeps/x86_64/multiarch/init-arch.c @@ -167,9 +167,14 @@ __init_cpu_features (void) /* Determine if AVX is usable. */ if (CPUID_AVX) __cpu_features.feature[index_AVX_Usable] |= bit_AVX_Usable; - /* Determine if AVX2 is usable. */ +#if index_AVX2_Usable != index_AVX_Fast_Unaligned_Load +# error index_AVX2_Usable != index_AVX_Fast_Unaligned_Load +#endif + /* Determine if AVX2 is usable. Unaligned load with 256-bit + AVX registers are faster on processors with AVX2. */ if (CPUID_AVX2) - __cpu_features.feature[index_AVX2_Usable] |= bit_AVX2_Usable; + __cpu_features.feature[index_AVX2_Usable] + |= bit_AVX2_Usable | bit_AVX_Fast_Unaligned_Load; /* Determine if FMA is usable. */ if (CPUID_FMA) __cpu_features.feature[index_FMA_Usable] |= bit_FMA_Usable; |