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| author | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2013-09-26 09:29:19 -0500 |
|---|---|---|
| committer | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2013-10-25 13:28:24 -0500 |
| commit | 69f13dbf06c6195de0ada8632271d58ca3cf55da (patch) | |
| tree | c2611636127f33fdc43bb51a6ac0f2f97795136c /ChangeLog | |
| parent | 151659f6371ce39a488fd132a5c8ce5e3bba983c (diff) | |
| download | glibc-69f13dbf06c6195de0ada8632271d58ca3cf55da.zip glibc-69f13dbf06c6195de0ada8632271d58ca3cf55da.tar.gz glibc-69f13dbf06c6195de0ada8632271d58ca3cf55da.tar.bz2 | |
PowerPC: strcpy/stpcpy optimization for PPC64/POWER7
This patch intends to unify both strcpy and stpcpy implementationsi
for PPC64 and PPC64/POWER7. The idead default powerpc64 implementation
is to provide both doubleword and word aligned memory access.
For PPC64/POWER7 is also provide doubleword and word memory access,
remove the branch hints, use the cmpb instruction for compare
doubleword/words, and add an optimization for inputs of same alignment.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 11 |
1 files changed, 11 insertions, 0 deletions
@@ -1,3 +1,14 @@ +2013-10-04 Adhemerval Zanella <azanella@linux.vnet.ibm.com> + + * sysdeps/powerpc/powerpc64/strcpy.S (strcpy): Add word load/store + to provide a boost for large inputs with word alignment. + * sysdeps/powerpc/powerpc64/stpcpy.S (__stpcpy): Rewrite + implementation based on optimized PPC64 strcpy. + * sysdeps/powerpc/powerpc64/power7/strcpy.S: New file: optimized + strcpy for PPC64/POWER7 based on both doubleword and word load/store. + * sysdeps/powerpc/powerpc64/power7/stpcpy.S: New file: optimized + stpcpy for PPC64/POWER7 based on PPC64/POWER7 strcpy. + 2013-10-25 Ondřej Bílka <neleai@seznam.cz> [BZ 2801] |