[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



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