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| author | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2015-01-07 07:18:30 -0500 |
|---|---|---|
| committer | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2015-01-13 11:28:58 -0500 |
| commit | 8bedcb5f03c62bf6001396dafdd82fbd4da7c2db (patch) | |
| tree | 436c29346cd848224d7adee415d8e78cc4409915 /sysdeps/powerpc/powerpc64/multiarch/strcmp.c | |
| parent | f06a4faf8a2b4d046eb40e94b47948cc47d79902 (diff) | |
| download | glibc-8bedcb5f03c62bf6001396dafdd82fbd4da7c2db.tar.gz glibc-8bedcb5f03c62bf6001396dafdd82fbd4da7c2db.tar.xz glibc-8bedcb5f03c62bf6001396dafdd82fbd4da7c2db.zip | |
powerpc: Optimized strcmp for POWER8/PPC64
This patch adds an optimized POWER8 strcmp using unaligned accesses. The algorithm first check the initial 16 bytes, then align the first function source and uses unaligned loads on second argument only. Aditional checks for page boundaries are done for unaligned cases
Diffstat (limited to 'sysdeps/powerpc/powerpc64/multiarch/strcmp.c')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/multiarch/strcmp.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sysdeps/powerpc/powerpc64/multiarch/strcmp.c b/sysdeps/powerpc/powerpc64/multiarch/strcmp.c index 9b2922f644..b45ba1f54d 100644 --- a/sysdeps/powerpc/powerpc64/multiarch/strcmp.c +++ b/sysdeps/powerpc/powerpc64/multiarch/strcmp.c @@ -23,9 +23,12 @@ extern __typeof (strcmp) __strcmp_ppc attribute_hidden; extern __typeof (strcmp) __strcmp_power7 attribute_hidden; +extern __typeof (strcmp) __strcmp_power8 attribute_hidden; libc_ifunc (strcmp, - (hwcap & PPC_FEATURE_HAS_VSX) - ? __strcmp_power7 + (hwcap2 & PPC_FEATURE2_ARCH_2_07) + ? __strcmp_power8 : + (hwcap & PPC_FEATURE_HAS_VSX) + ? __strcmp_power7 : __strcmp_ppc); #endif |