AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-11 15:50:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

Remove ENABLE_SSSE3_ON_ATOM.

Browse Source 
It turns that SSSE3 isn't slow on Atom. The problem is bsf. This patch
removes ENABLE_SSSE3_ON_ATOM.
This commit is contained in:
H.J. Lu 2009-08-28 14:54:46 -07:00 committed by Ulrich Drepper
parent d444ac573c
commit 5a4eb7282e
3 changed files with 8 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
ChangeLog
View File

@ -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.

2
sysdeps/i386/i686/multiarch/init-arch.c
View File

@ -1,3 +1 @@
#define ENABLE_SSSE3_ON_ATOM
#include <sysdeps/x86_64/multiarch/init-arch.c>

8
sysdeps/x86_64/multiarch/init-arch.c
View File

@ -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
}
}
/* This spells out "AuthenticAMD". */
else if (ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746e65)