[PATCH v4] ARM: Improve armv7 memcpy performance.
Joseph S. Myers
joseph@codesourcery.com
Mon Sep 16 15:25:00 GMT 2013
On Mon, 16 Sep 2013, Will Newton wrote:
> Only enter the aligned copy loop with buffers that can be 8-byte
> aligned. This improves performance slightly on Cortex-A9 and
> Cortex-A15 cores for large copies with buffers that are 4-byte
> aligned but not 8-byte aligned.
>
> ports/ChangeLog.arm:
>
> 2013-08-30 Will Newton <will.newton@linaro.org>
>
> * sysdeps/arm/armv7/multiarch/memcpy_impl.S: Tighten check
> on entry to aligned copy loop to improve performance.
OK.
--
Joseph S. Myers
joseph@codesourcery.com
More information about the Libc-ports
mailing list