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[Bug rtl-optimization/23560] [4.0 Regression] Strength-reduction breaking unsigned COMPARE
- 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: 26 Aug 2005 07:33:55 -0000
- Subject: [Bug rtl-optimization/23560] [4.0 Regression] Strength-reduction breaking unsigned COMPARE
- References: <20050825135533.23560.jakub@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-08-26 07:33 -------
Subject: Bug 23560
CVSROOT: /cvs/gcc
Module name: gcc
Branch: gcc-4_0-branch
Changes by: rth@gcc.gnu.org 2005-08-26 07:33:27
Modified files:
gcc : ChangeLog loop.c
Log message:
PR rtl-opt/23560
* loop.c (biased_biv_may_wrap_p): New.
(maybe_eliminate_biv_1): Use it to suppress non-equality
comparison transformations. Delete disabled code.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.391&r2=2.7592.2.392
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/loop.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.522.8.2&r2=1.522.8.3
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23560