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| author | Wainer dos Santos Moschetta <wainersm@linux.vnet.ibm.com> | 2017-04-05 10:24:24 -0300 |
|---|---|---|
| committer | Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> | 2017-04-05 10:26:58 -0300 |
| commit | 18b6e2c86ce03c9be8ee0a53840fe5d533de22b3 (patch) | |
| tree | 1e58ed4cc0d2886d01223510f11ccf2889a719dd /sysdeps/powerpc/powerpc64/multiarch/Makefile | |
| parent | b2b1ea8b777c2f1362d41ee34089104f535e9903 (diff) | |
| download | glibc-18b6e2c86ce03c9be8ee0a53840fe5d533de22b3.tar.gz glibc-18b6e2c86ce03c9be8ee0a53840fe5d533de22b3.tar.xz glibc-18b6e2c86ce03c9be8ee0a53840fe5d533de22b3.zip | |
powerpc64: Add POWER8 strnlen
Added strnlen POWER8 otimized for long strings. It delivers same performance as POWER7 implementation for short strings. This takes advantage of reasonably performing unaligned loads and bit permutes to check the first 1-16 bytes until quadword aligned, then checks in 64 bytes strides until unsafe, then 16 bytes, truncating the count if need be. Likewise, the POWER7 code is recycled for less than 32 bytes strings. Tested on ppc64 and ppc64le. * sysdeps/powerpc/powerpc64/multiarch/Makefile (sysdep_routines): Add strnlen-power8. * sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c (strnlen): Add __strnlen_power8 to list of strnlen functions. * sysdeps/powerpc/powerpc64/multiarch/strnlen-power8.S: New file. * sysdeps/powerpc/powerpc64/multiarch/strnlen.c (__strnlen): Add __strnlen_power8 to ifunc list. * sysdeps/powerpc/powerpc64/power8/strnlen.S: New file.
Diffstat (limited to 'sysdeps/powerpc/powerpc64/multiarch/Makefile')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/multiarch/Makefile | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sysdeps/powerpc/powerpc64/multiarch/Makefile b/sysdeps/powerpc/powerpc64/multiarch/Makefile index f5889a322b..38233a72c0 100644 --- a/sysdeps/powerpc/powerpc64/multiarch/Makefile +++ b/sysdeps/powerpc/powerpc64/multiarch/Makefile @@ -5,8 +5,9 @@ sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \ memset-ppc64 memset-power8 \ mempcpy-power7 mempcpy-ppc64 memchr-power7 memchr-ppc64 \ memrchr-power7 memrchr-ppc64 rawmemchr-power7 \ - rawmemchr-ppc64 strlen-power7 strlen-ppc64 strnlen-power7 \ - strnlen-ppc64 strcasecmp-power7 strcasecmp_l-power7 \ + rawmemchr-ppc64 strlen-power7 strlen-ppc64 \ + strnlen-power8 strnlen-power7 strnlen-ppc64 \ + strcasecmp-power7 strcasecmp_l-power7 \ strncase-power7 strncase_l-power7 \ strncmp-power9 strncmp-power8 strncmp-power7 \ strncmp-power4 strncmp-ppc64 \ |