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| author | Liubov Dmitrieva <liubov.dmitrieva@intel.com> | 2013-06-28 15:28:50 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2013-06-28 15:31:40 -0700 |
| commit | 6308fd9a46a2f4aa550886e6f58190fb209ef027 (patch) | |
| tree | 668039e1091165b38354a1ffebf35b0058de3eed /sysdeps/x86_64/multiarch/init-arch.c | |
| parent | 89cd956937f46e8f4a0374994965f991642dd408 (diff) | |
| download | glibc-6308fd9a46a2f4aa550886e6f58190fb209ef027.tar.gz glibc-6308fd9a46a2f4aa550886e6f58190fb209ef027.tar.xz glibc-6308fd9a46a2f4aa550886e6f58190fb209ef027.zip | |
Skip SSE4.2 versions on Intel Silvermont
SSE2/SSSE3 versions are faster than SSE4.2 versions on Intel Silvermont.
Diffstat (limited to 'sysdeps/x86_64/multiarch/init-arch.c')
| -rw-r--r-- | sysdeps/x86_64/multiarch/init-arch.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sysdeps/x86_64/multiarch/init-arch.c b/sysdeps/x86_64/multiarch/init-arch.c index 9524aeea18..55839610e2 100644 --- a/sysdeps/x86_64/multiarch/init-arch.c +++ b/sysdeps/x86_64/multiarch/init-arch.c @@ -81,8 +81,16 @@ __init_cpu_features (void) case 0x37: /* Unaligned load versions are faster than SSSE3 on Silvermont. */ +#if index_Fast_Unaligned_Load != index_Prefer_PMINUB_for_stringop +# error index_Fast_Unaligned_Load != index_Prefer_PMINUB_for_stringop +#endif +#if index_Fast_Unaligned_Load != index_Slow_SSE4_2 +# error index_Fast_Unaligned_Load != index_Slow_SSE4_2 +#endif __cpu_features.feature[index_Fast_Unaligned_Load] - |= bit_Fast_Unaligned_Load; + |= (bit_Fast_Unaligned_Load + | bit_Prefer_PMINUB_for_stringop + | bit_Slow_SSE4_2); break; default: |