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[Bug tree-optimization/14796] [tree-ssa] combine two shifts into one
- From: "cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 13 Jun 2005 00:18:53 -0000
- Subject: [Bug tree-optimization/14796] [tree-ssa] combine two shifts into one
- References: <20040331095139.14796.kazu@cs.umass.edu>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-06-13 00:18 -------
Subject: Bug 14796
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: phython@gcc.gnu.org 2005-06-13 00:18:41
Modified files:
gcc : ChangeLog fold-const.c
gcc/testsuite : ChangeLog
gcc/testsuite/gcc.dg: pr14796-1.c
Log message:
2005-06-12 James A. Morrison <phython@gcc.gnu.org>
PR tree-optimization/14796
* fold-const (fold_binary): Transform (X << C) >> C into X & (-1>>C)
for unsigned types.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9132&r2=2.9133
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fold-const.c.diff?cvsroot=gcc&r1=1.593&r2=1.594
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5628&r2=1.5629
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/pr14796-1.c.diff?cvsroot=gcc&r1=1.1&r2=1.2
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14796