From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14112 invoked by alias); 3 Jan 2014 15:41:04 -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 14066 invoked by uid 55); 3 Jan 2014 15:41:00 -0000 From: "meibf at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/59651] [4.9 Regression] Vectorizer failing to spot dependence causes incorrect code generation. Date: Fri, 03 Jan 2014 15:41:00 -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: 4.9.0 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: meibf at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.9.0 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: 2014-01/txt/msg00139.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59651 --- Comment #8 from meibf at gcc dot gnu.org --- Author: meibf Date: Fri Jan 3 15:40:57 2014 New Revision: 206319 URL: http://gcc.gnu.org/viewcvs?rev=206319&root=gcc&view=rev Log: 2014-01-03 Bingfeng Mei PR tree-optimization/59651 * tree-vect-loop-manip.c (vect_create_cond_for_alias_checks): Address range for negative step should be added by TYPE_SIZE_UNIT. PR tree-optimization/59651 * gcc.dg/torture/pr59651.c: New test. * gcc.dg/vect/pr59651.c: Ditto. Added: trunk/gcc/testsuite/gcc.dg/torture/pr59651.c trunk/gcc/testsuite/gcc.dg/vect/pr59651.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-vect-loop-manip.c