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| author | Will Schmidt <will_schmidt@vnet.ibm.com> | 2012-08-22 11:04:42 -0500 |
|---|---|---|
| committer | Ryan S. Arnold <rsa@linux.vnet.ibm.com> | 2012-08-22 11:04:42 -0500 |
| commit | 15d0da8cb36f5c96a3c649d29a2e2623e995cd49 (patch) | |
| tree | 3c1ccdcbc8fb94fb795fc13e519e02957d02e626 /sysdeps/powerpc/powerpc64 | |
| parent | bcca089526c6859e775243731037a469aec3065c (diff) | |
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Add versions of wcscpy, wcschr, wcsrchr for power6/power7.
Initially based on the versions found in wcsmbs/* ; these files have
been changed by hand unrolling, and adding some additional variables
to allow some read-ahead to occur, which then relieves some of the
wait-for-increment/wait-for-load/wait-for-compare-results pressure
that was slowing down every iteration through the while-loop.
For 64-bit Power7, These changes give an approx 20% throughput boost
for the wcschr and wcsrchr functions; and approx 40% boost for the
wcscpy function. 32-bit improvements appear to be slightly better
with ~ %30 and ~ %45 respectively. Results for Power6 closely match
those for power7.
Diffstat (limited to 'sysdeps/powerpc/powerpc64')
| -rw-r--r-- | sysdeps/powerpc/powerpc64/power6/wcschr.c | 1 | ||||
| -rw-r--r-- | sysdeps/powerpc/powerpc64/power6/wcscpy.c | 1 | ||||
| -rw-r--r-- | sysdeps/powerpc/powerpc64/power6/wcsrchr.c | 1 |
3 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc64/power6/wcschr.c b/sysdeps/powerpc/powerpc64/power6/wcschr.c new file mode 100644 index 0000000000..9136c02cb5 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power6/wcschr.c @@ -0,0 +1 @@ +#include "../../powerpc32/power6/wcschr.c" diff --git a/sysdeps/powerpc/powerpc64/power6/wcscpy.c b/sysdeps/powerpc/powerpc64/power6/wcscpy.c new file mode 100644 index 0000000000..57b706ab99 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power6/wcscpy.c @@ -0,0 +1 @@ +#include "../../powerpc32/power6/wcscpy.c" diff --git a/sysdeps/powerpc/powerpc64/power6/wcsrchr.c b/sysdeps/powerpc/powerpc64/power6/wcsrchr.c new file mode 100644 index 0000000000..2327c05b04 --- /dev/null +++ b/sysdeps/powerpc/powerpc64/power6/wcsrchr.c @@ -0,0 +1 @@ +#include "../../powerpc32/power6/wcsrchr.c" |