Remove ENABLE_SSSE3_ON_ATOM.

It turns that SSSE3 isn't slow on Atom. The problem is bsf. This patch
removes ENABLE_SSSE3_ON_ATOM.

diff --git a/ChangeLog b/ChangeLog
index a979b2f6095014fff6cf243358e49049b4e1cfa3..b52cb81b60482b8197317f2fe6833e253714a876 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2009-08-27  H.J. Lu  <hongjiu.lu@intel.com>
+
+       * sysdeps/i386/i686/multiarch/init-arch.c (ENABLE_SSSE3_ON_ATOM):
+       Removed.
+       * sysdeps/x86_64/multiarch/init-arch.c (__init_cpu_features): Don't
+       turn off SSSE3 on Atom.
+
 2009-08-28  Ulrich Drepper  <drepper@redhat.com>
 
        * stdlib/tst-strtol.c (tests): More tests.

diff --git a/sysdeps/i386/i686/multiarch/init-arch.c b/sysdeps/i386/i686/multiarch/init-arch.c
index b371bae1dc056e1b2fb96808b59538f0f9c44b7a..00a94d83dc45df7dc30ebfa30e9151ffe42407f1 100644 (file)
--- a/sysdeps/i386/i686/multiarch/init-arch.c
+++ b/sysdeps/i386/i686/multiarch/init-arch.c
@@ -1,3 +1 @@
-#define ENABLE_SSSE3_ON_ATOM
-
 #include <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 c152ab29eba45cf45102fca6b5aa5ecb8079d182..9a1e776c9a54f3a5c827dc1c0edaef30ec1ca50f 100644 (file)
--- a/sysdeps/x86_64/multiarch/init-arch.c
+++ b/sysdeps/x86_64/multiarch/init-arch.c
@@ -64,15 +64,7 @@ __init_cpu_features (void)
          __cpu_features.model += extended_model;
        }
       else if (__cpu_features.family == 0x06)
-       {
-         __cpu_features.model += extended_model;
-
-#ifndef ENABLE_SSSE3_ON_ATOM
-         if (__cpu_features.model == 0x1c)
-           /* Avoid SSSE3 on Atom since it is slow.  */
-           __cpu_features.cpuid[COMMON_CPUID_INDEX_1].ecx &= ~(1 << 9);
-#endif
-       }
+       __cpu_features.model += extended_model;
     }
   /* This spells out "AuthenticAMD".  */
   else if (ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746e65)