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[Bug optimization/11381] [3.3/3.4 regression] volatile memory access optimized away
- 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: 3 Jul 2003 07:30:15 -0000
- Subject: [Bug optimization/11381] [3.3/3.4 regression] volatile memory access optimized away
- References: <20030630162521.11381.tobias@ringstrom.mine.nu>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11381
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2003-07-03 07:30 -------
Subject: Bug 11381
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: ebotcazou@gcc.gnu.org 2003-07-03 07:30:03
Modified files:
gcc : ChangeLog simplify-rtx.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/gcc.dg: i386-volatile-1.c
Log message:
PR optimization/11381
* simplify-rtx.c (simplify_relational_operation): Check that
two equal operands have no side-effects before simplifying
the comparison.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.308&r2=2.309
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/simplify-rtx.c.diff?cvsroot=gcc&r1=1.144&r2=1.145
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.2829&r2=1.2830
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/i386-volatile-1.c.diff?cvsroot=gcc&r1=NONE&r2=1.1