From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5367 invoked by alias); 3 Sep 2013 12:18:40 -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 5329 invoked by uid 55); 3 Sep 2013 12:18:38 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/58246] [4.7/4.8 Regression] wrong code at -O1 and above Date: Tue, 03 Sep 2013 12:18:00 -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: unknown X-Bugzilla-Keywords: X-Bugzilla-Severity: normal 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: 4.7.4 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: 2013-09/txt/msg00140.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58246 --- Comment #7 from Richard Biener --- Author: rguenth Date: Tue Sep 3 12:18:34 2013 New Revision: 202217 URL: http://gcc.gnu.org/viewcvs?rev=202217&root=gcc&view=rev Log: 2013-09-03 Richard Biener Backport from mainline 2013-08-29 Richard Biener PR tree-optimization/58246 * tree-ssa-dce.c (mark_aliased_reaching_defs_necessary_1): Properly handle the dominance check inside a basic-block. * gcc.dg/torture/pr58246.c: New testcase. Added: branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/torture/pr58246.c Modified: branches/gcc-4_8-branch/gcc/ChangeLog branches/gcc-4_8-branch/gcc/testsuite/ChangeLog branches/gcc-4_8-branch/gcc/tree-ssa-dce.c