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This patch optimizes strstr function for power >= 7 systems. Performance gain is obtained using aligned memory access and usage of cmpb instruction for quicker comparison. The average improvement of this optimization is ~40%. Tested on ppc64 and ppc64le. 2015-07-16 Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com> * sysdeps/powerpc/powerpc64/multiarch/Makefile: Add strstr(). * sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c: Likewise. * sysdeps/powerpc/powerpc64/power7/strstr.S: New File. * sysdeps/powerpc/powerpc64/multiarch/strstr-power7.S: New File. * sysdeps/powerpc/powerpc64/multiarch/strstr-ppc64.c: New File. * sysdeps/powerpc/powerpc64/multiarch/strstr.c: New File. |
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.. | ||
970 | ||
a2 | ||
bits | ||
cell | ||
fpu | ||
multiarch | ||
power4 | ||
power5 | ||
power5+ | ||
power6 | ||
power6x | ||
power7 | ||
power8 | ||
__longjmp-common.S | ||
__longjmp.S | ||
addmul_1.S | ||
backtrace.c | ||
bsd-_setjmp.S | ||
bsd-setjmp.S | ||
bzero.S | ||
configure | ||
configure.ac | ||
crti.S | ||
crtn.S | ||
dl-dtprocnum.h | ||
dl-irel.h | ||
dl-machine.c | ||
dl-machine.h | ||
dl-trampoline.S | ||
entry.h | ||
ffsll.c | ||
hp-timing.h | ||
Implies | ||
lshift.S | ||
Makefile | ||
memcpy.S | ||
memset.S | ||
mul_1.S | ||
ppc-mcount.S | ||
register-dump.h | ||
rtld-memset.c | ||
setjmp-common.S | ||
setjmp.S | ||
stackguard-macros.h | ||
start.S | ||
stpcpy.S | ||
strchr.S | ||
strcmp.S | ||
strcpy.S | ||
strcspn.S | ||
strlen.S | ||
strncmp.S | ||
strpbrk.S | ||
strspn.S | ||
strtok_r.S | ||
strtok.S | ||
submul_1.S | ||
sysdep.h | ||
tls-macros.h | ||
tst-audit.h |