diff options
| author | Alan Modra <amodra@gmail.com> | 2013-08-17 18:47:59 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2013-10-04 10:41:35 +0930 |
| commit | 3be87c77d24c4456ccca4034363b6d1814cd0c84 (patch) | |
| tree | c81589a21d74b94d5ae20235bc6d81715eca858c /ChangeLog | |
| parent | 759cfef3ac4c07dba1ece0bbc1207e099348816d (diff) | |
| download | glibc-3be87c77d24c4456ccca4034363b6d1814cd0c84.tar.gz glibc-3be87c77d24c4456ccca4034363b6d1814cd0c84.tar.xz glibc-3be87c77d24c4456ccca4034363b6d1814cd0c84.zip | |
PowerPC LE memset
http://sourceware.org/ml/libc-alpha/2013-08/msg00104.html
One of the things I noticed when looking at power7 timing is that rlwimi
is cracked and the two resulting insns have a register dependency.
That makes it a little slower than the equivalent rldimi.
* sysdeps/powerpc/powerpc64/memset.S: Replace rlwimi with
insrdi. Formatting.
* sysdeps/powerpc/powerpc64/power4/memset.S: Likewise.
* sysdeps/powerpc/powerpc64/power6/memset.S: Likewise.
* sysdeps/powerpc/powerpc64/power7/memset.S: Likewise.
* sysdeps/powerpc/powerpc32/power4/memset.S: Likewise.
* sysdeps/powerpc/powerpc32/power6/memset.S: Likewise.
* sysdeps/powerpc/powerpc32/power7/memset.S: Likewise.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 959d3a30ab..cd54976bcf 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,16 @@ 2013-10-04 Alan Modra <amodra@gmail.com> + * sysdeps/powerpc/powerpc64/memset.S: Replace rlwimi with + insrdi. Formatting. + * sysdeps/powerpc/powerpc64/power4/memset.S: Likewise. + * sysdeps/powerpc/powerpc64/power6/memset.S: Likewise. + * sysdeps/powerpc/powerpc64/power7/memset.S: Likewise. + * sysdeps/powerpc/powerpc32/power4/memset.S: Likewise. + * sysdeps/powerpc/powerpc32/power6/memset.S: Likewise. + * sysdeps/powerpc/powerpc32/power7/memset.S: Likewise. + +2013-10-04 Alan Modra <amodra@gmail.com> + * sysdeps/powerpc/powerpc32/power4/memcpy.S: Add little endian support. * sysdeps/powerpc/powerpc32/power6/memcpy.S: Likewise. * sysdeps/powerpc/powerpc32/power7/memcpy.S: Likewise. |