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Re: 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: Tue, 23 Aug 2011 11:50:26 +0400
Subject: Re: PATCH: Improve 32 bit strchr and strrchr functions with SSE2
References: <CAHjhQ933=Odweh0DtJX=OfdNAp9XdBL6GJUd_7GJ-bBo4_DeVQ@mail.gmail.com>

Reposting.

2011/8/8 Dmitrieva Liubov <liubov.dmitrieva@gmail.com>:
> 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
>

References:
- PATCH: Improve 32 bit strchr and strrchr functions with SSE2
  - From: Dmitrieva Liubov

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