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[PATCH] Sign extension elimination

From: Mircea Namolaru <NAMOLARU at il dot ibm dot com>
To: gcc-patches at gcc dot gnu dot org
Cc: roger at eyesopen dot com, leehod dot baruch at weizmann dot ac dot il, leehod at gmail dot com
Date: Mon, 27 Feb 2006 16:56:15 +0200
Subject: [PATCH] Sign extension elimination

Hello,

I've updated the above patch against mainline:

http://gcc.gnu.org/ml/gcc-patches/2005-09/msg01769.html.

Changes in infrastructure of gcc that can be reviewed
and commitated separately were moved in separate patches.
See: 
[PATCH} Extension to web.c
[PATCH] New function in cfgrtl.c
submittated before this patch.

Bootstrapped successfully on powerpc64-linux and power-linux.
Regression tests passed on powerpc64-linux and powerpc-linux.

Performance results on SPEC2000: improvement 2.5% crafty,
2% vpr, 1.5% mesa. Degradation: 2% gzip.

Mircea

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Attachment: recog.patch
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Follow-Ups:
- Re: [PATCH] Sign extension elimination
  - From: Mark Mitchell
- Re: [PATCH] Sign extension elimination
  - From: H. J. Lu

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