From 6308fd9a46a2f4aa550886e6f58190fb209ef027 Mon Sep 17 00:00:00 2001 From: Liubov Dmitrieva Date: Fri, 28 Jun 2013 15:28:50 -0700 Subject: Skip SSE4.2 versions on Intel Silvermont SSE2/SSSE3 versions are faster than SSE4.2 versions on Intel Silvermont. --- sysdeps/x86_64/multiarch/init-arch.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'sysdeps/x86_64/multiarch/init-arch.c') 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: -- cgit v1.2.3