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Improve memcpy for Atom

From: Michael Zolotukhin <michael dot v dot zolotukhin at gmail dot com>
To: libc-alpha at sourceware dot org
Date: Wed, 19 Oct 2011 17:11:25 +0400
Subject: Improve memcpy for Atom

Hi,

This patch contains one function:
__memcpy_ssse3

It improves memcpy on small sizes and on sizes between half of shared
cache size and shared cache size for Atom (up to 40% performance
gain).

The patch was tested on Atom.

Change Log:
2011-10-11  Michael Zolotukhin  <michael.v.zolotukhin@gmail.com>

        * sysdeps/i386/i686/multiarch/memcpy-ssse3.S: Update.
        XMM-moves are used for copying on small sizes. Use
SHARED_CACHE_SIZE instead of
        SHARED_CACHE_SIZE_HALF.

-- 
---
Best regards,
Michael V. Zolotukhin,
Software Engineer
Intel Corporation.

Attachment: memcpy_32.patch
Description: Binary data

Follow-Ups:
- Re: Improve memcpy for Atom
  - From: H.J. Lu

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