AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-12 16:20:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

x86: Remove {w}memcmp-ssse3

Browse Source 
With SSE2, SSE4.1, AVX2, and EVEX versions very few targets prefer
SSSE3. As a result it is no longer worth it to keep the SSSE3
versions given the code size cost.
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
This commit is contained in:
Noah Goldstein 2022-04-14 11:47:34 -05:00
parent 404656009b
commit c725f408db
5 changed files with 0 additions and 2006 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sysdeps/x86_64/multiarch/Makefile
View File

@ -12,7 +12,6 @@ sysdep_routines += \
memcmp-evex-movbe \
memcmp-sse2 \
memcmp-sse4 \
memcmp-ssse3 \
memcmpeq-avx2 \
memcmpeq-avx2-rtm \
memcmpeq-evex \
@ -179,7 +178,6 @@ sysdep_routines += \
wmemcmp-c \
wmemcmp-evex-movbe \
wmemcmp-sse4 \
wmemcmp-ssse3 \
# sysdep_routines
endif

4
sysdeps/x86_64/multiarch/ifunc-impl-list.c
View File

@ -98,8 +98,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__memcmp_evex_movbe)
IFUNC_IMPL_ADD (array, i, memcmp, CPU_FEATURE_USABLE (SSE4_1),
__memcmp_sse4_1)
IFUNC_IMPL_ADD (array, i, memcmp, CPU_FEATURE_USABLE (SSSE3),
__memcmp_ssse3)
IFUNC_IMPL_ADD (array, i, memcmp, 1, __memcmp_sse2))
#ifdef SHARED
@ -844,8 +842,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__wmemcmp_evex_movbe)
IFUNC_IMPL_ADD (array, i, wmemcmp, CPU_FEATURE_USABLE (SSE4_1),
__wmemcmp_sse4_1)
IFUNC_IMPL_ADD (array, i, wmemcmp, CPU_FEATURE_USABLE (SSSE3),
__wmemcmp_ssse3)
IFUNC_IMPL_ADD (array, i, wmemcmp, 1, __wmemcmp_sse2))
/* Support sysdeps/x86_64/multiarch/wmemset.c. */

4
sysdeps/x86_64/multiarch/ifunc-memcmp.h
View File

@ -20,7 +20,6 @@
# include <init-arch.h>
extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) attribute_hidden;
extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) attribute_hidden;
extern __typeof (REDIRECT_NAME) OPTIMIZE (sse4_1) attribute_hidden;
extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_movbe) attribute_hidden;
extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_movbe_rtm) attribute_hidden;
@ -50,8 +49,5 @@ IFUNC_SELECTOR (void)
if (CPU_FEATURE_USABLE_P (cpu_features, SSE4_1))
return OPTIMIZE (sse4_1);
if (CPU_FEATURE_USABLE_P (cpu_features, SSSE3))
return OPTIMIZE (ssse3);
return OPTIMIZE (sse2);
}

1992
sysdeps/x86_64/multiarch/memcmp-ssse3.S
View File

File diff suppressed because it is too large Load Diff

4
sysdeps/x86_64/multiarch/wmemcmp-ssse3.S
View File

@ -1,4 +0,0 @@
#define USE_AS_WMEMCMP 1
#define MEMCMP __wmemcmp_ssse3
#include "memcmp-ssse3.S"