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PATCH: Improve 32 bit strchr and strrchr functions with SSE2

From: Dmitrieva Liubov <liubov dot dmitrieva at gmail dot com>
To: libc-alpha at sourceware dot org
Date: Mon, 8 Aug 2011 13:55:30 +0400
Subject: PATCH: Improve 32 bit strchr and strrchr functions with SSE2

Hello,

This patch improves strchr and strrchr for IA 32 bit with SSE2 (two
versions: with bsf, bsr instructions, without bsf, bsr instructions
(good on atom) ).
Tested on core i7, core 2, atom.

It improves performance by up to 6.5 X for strrchr and 7.5 X for strchr.


--
Liubov Dmitrieva

Attachment: strchr_strrchr_32_bit.patch
Description: Binary data

Attachment: ChangeLog.strchr_strrchr_32
Description: Binary data

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