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| author | Wilco Dijkstra <wdijkstr@arm.com> | 2015-08-05 15:15:28 +0100 |
|---|---|---|
| committer | Wilco Dijkstra <wdijkstr@arm.com> | 2015-08-05 16:24:02 +0100 |
| commit | f6482cf29d3094ca9688be59802353014c528959 (patch) | |
| tree | 11e8c2855b92cb90ce2a16ad55151c60e8d6962f /ChangeLog | |
| parent | 7b1c56e4834aa3b139fea39ded64a7e901be89a2 (diff) | |
| download | glibc-f6482cf29d3094ca9688be59802353014c528959.tar.gz glibc-f6482cf29d3094ca9688be59802353014c528959.tar.xz glibc-f6482cf29d3094ca9688be59802353014c528959.zip | |
This patch improves strncpy performance by using strnlen/memcpy rather than a byte loop. Performance
on bench-strncpy is 1.9-2.1x faster on average. I tried several variations, and using a tailcall and calling memset conditionally gave the best overall results.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index d0135619cf..5f40e4e015 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,10 @@ 2015-08-05 Wilco Dijkstra <wdijkstr@arm.com> + * string/strncpy.c (strncpy): + Improve performance by using __strnlen/memcpy. + +2015-08-05 Wilco Dijkstra <wdijkstr@arm.com> + * sysdeps/aarch64/fpu/feenablxcpt.c (feenableexcept): Optimize to avoid an unnecessary FPCR read. |