From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12517 invoked by alias); 7 Apr 2014 14:04:34 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 12470 invoked by uid 55); 7 Apr 2014 14:04:31 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/60766] [4.7/4.8/4.9 Regression] Wrong optimization with -O2 Date: Mon, 07 Apr 2014 14:04:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 4.8.2 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: major X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.8.3 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2014-04/txt/msg00473.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60766 --- Comment #7 from Richard Biener --- Author: rguenth Date: Mon Apr 7 14:03:55 2014 New Revision: 209190 URL: http://gcc.gnu.org/viewcvs?rev=209190&root=gcc&view=rev Log: 2014-04-07 Richard Biener PR tree-optimization/60766 * tree-ssa-loop-ivopts.c (cand_value_at): Compute in an unsigned type. (may_eliminate_iv): Convert cand_value_at result to desired type. * gcc.dg/torture/pr60766.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/torture/pr60766.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-loop-ivopts.c