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PATCH: Improve 64bit strcpy functions

From: "H.J. Lu" <hongjiu dot lu at intel dot com>
To: GNU C Library <libc-alpha at sourceware dot org>
Date: Wed, 22 Jun 2011 13:51:23 -0700
Subject: PATCH: Improve 64bit strcpy functions
Reply-to: "H.J. Lu" <hjl dot tools at gmail dot com>

Hi,

This patch has new SSE2/SSSE3 implementations of 64bit strcpy functions.
Tested on Atom, Core 2 and Core i7.  It improves strcpy performance by
up to 4X.

BTW, this patch needs init-arch changes in the 32bit strcpy patch.


H.J.
----
2011-06-22  H.J. Lu  <hongjiu.lu@intel.com>

	* sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add
	strcpy-ssse3 strncpy-ssse3 stpcpy-ssse3 stpncpy-ssse3
	strcpy-sse2-unaligned strncpy-sse2-unaligned
	stpcpy-sse2-unaligned stpncpy-sse2-unaligned.

	* sysdeps/x86_64/multiarch/stpcpy-sse2-unaligned.S: New.
	* sysdeps/x86_64/multiarch/stpcpy-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/stpncpy-sse2-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/stpncpy-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strcpy-sse2-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/strcpy-ssse3.S: Likewise.
	* sysdeps/x86_64/multiarch/strncpy-sse2-unaligned.S: Likewise.
	* sysdeps/x86_64/multiarch/strncpy-ssse3.S: Likewise.

	* sysdeps/x86_64/multiarch/strcpy.S: Remove strcpy with SSSE3.
	(STRCPY): Support SSE2 and SSSE3 versions.

Attachment: libc-strcpy-64bit-1.patch.bz2
Description: BZip2 compressed data

Follow-Ups:
- Re: PATCH: Improve 64bit strcpy functions
  - From: Ulrich Drepper

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