qiurui/glibc - glibc - Gitea: Git with a cup of tea

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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.

2012-08-22 16:04:42 +00:00

#include "../../powerpc32/power6/wcscpy.c"