[PATCH][AArch64] Optimize strlen

Marcus Shawcroft marcus.shawcroft@gmail.com
Mon Jul 6 14:42:00 GMT 2015


On 16 January 2015 at 17:39, Wilco Dijkstra <wdijkstr@arm.com> wrote:
> Optimize the strlen implementation by using a page cross check and a fast check
> for nul bytes which reverts to separate loop when a non-ASCII char is encountered.
> Speedup on test-strlen is ~10%, long ASCII strings are processed ~60% faster,
> and on random tests it is ~80% better.
>
> ChangeLog:
>
> 2015-01-16  Wilco Dijkstra  <wdijkstr@arm.com>
>
>         * sysdeps/aarch64/strlen.S (strlen): Optimize strlen.

OK /Marcus



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