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| author | H.J. Lu <hongjiu.lu@intel.com> | 2010-11-08 03:41:34 -0500 |
|---|---|---|
| committer | Ulrich Drepper <drepper@gmail.com> | 2010-11-08 03:41:34 -0500 |
| commit | ff02d5280bf252e86d325ff4348feaf531ede831 (patch) | |
| tree | 243484af328916c3945588aab649615521ceebc6 /sysdeps/x86_64/multiarch/init-arch.c | |
| parent | 344d0b545d0a0a0ab737ff333d807969721ce381 (diff) | |
| download | glibc-ff02d5280bf252e86d325ff4348feaf531ede831.tar.gz glibc-ff02d5280bf252e86d325ff4348feaf531ede831.tar.xz glibc-ff02d5280bf252e86d325ff4348feaf531ede831.zip | |
Use IFUNC on x86-64 memset
Diffstat (limited to 'sysdeps/x86_64/multiarch/init-arch.c')
| -rw-r--r-- | sysdeps/x86_64/multiarch/init-arch.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sysdeps/x86_64/multiarch/init-arch.c b/sysdeps/x86_64/multiarch/init-arch.c index 786466d5fd..15bc9046e3 100644 --- a/sysdeps/x86_64/multiarch/init-arch.c +++ b/sysdeps/x86_64/multiarch/init-arch.c @@ -59,6 +59,11 @@ __init_cpu_features (void) get_common_indeces (&family, &model); + /* Intel processors prefer SSE instruction for memory/string + routines if they are avaiable. */ + __cpu_features.feature[index_Prefer_SSE_for_memop] + |= bit_Prefer_SSE_for_memop; + unsigned int eax = __cpu_features.cpuid[COMMON_CPUID_INDEX_1].eax; unsigned int extended_family = (eax >> 20) & 0xff; unsigned int extended_model = (eax >> 12) & 0xf0; |