mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-21 04:31:04 +08:00
584b18eb4d
A sse42 version of strstr used pcmpistr instruction which is quite ineffective. A faster way is look for pairs of characters which is uses sse2, is faster than pcmpistr and for real strings a pairs we look for are relatively rare. For linear time complexity we use buy or rent technique which switches to two-way algorithm when superlinear behaviour is detected.
33 lines
1.0 KiB
Makefile
33 lines
1.0 KiB
Makefile
ifeq ($(subdir),csu)
|
|
aux += init-arch
|
|
tests += test-multiarch
|
|
gen-as-const-headers += ifunc-defines.sym
|
|
endif
|
|
|
|
ifeq ($(subdir),string)
|
|
|
|
sysdep_routines += strncat-c stpncpy-c strncpy-c strcmp-ssse3 \
|
|
strcmp-sse2-unaligned strncmp-ssse3 \
|
|
memcmp-sse4 memcpy-ssse3 \
|
|
memcpy-sse2-unaligned mempcpy-ssse3 \
|
|
memmove-ssse3 memcpy-ssse3-back mempcpy-ssse3-back \
|
|
memmove-ssse3-back strcasecmp_l-ssse3 \
|
|
strncase_l-ssse3 strcat-ssse3 strncat-ssse3\
|
|
strcpy-ssse3 strncpy-ssse3 stpcpy-ssse3 stpncpy-ssse3 \
|
|
strcpy-sse2-unaligned strncpy-sse2-unaligned \
|
|
stpcpy-sse2-unaligned stpncpy-sse2-unaligned \
|
|
strcat-sse2-unaligned strncat-sse2-unaligned \
|
|
strchr-sse2-no-bsf memcmp-ssse3 strstr-sse2-unaligned
|
|
ifeq (yes,$(config-cflags-sse4))
|
|
sysdep_routines += strcspn-c strpbrk-c strspn-c varshift
|
|
CFLAGS-varshift.c += -msse4
|
|
CFLAGS-strcspn-c.c += -msse4
|
|
CFLAGS-strpbrk-c.c += -msse4
|
|
CFLAGS-strspn-c.c += -msse4
|
|
endif
|
|
endif
|
|
|
|
ifeq ($(subdir),wcsmbs)
|
|
sysdep_routines += wmemcmp-sse4 wmemcmp-ssse3 wmemcmp-c wcscpy-ssse3 wcscpy-c
|
|
endif
|