From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 24913 invoked by alias); 12 May 2011 12:33:53 -0000 Received: (qmail 24902 invoked by uid 22791); 12 May 2011 12:33:52 -0000 X-SWARE-Spam-Status: No, hits=-2.7 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 12 May 2011 12:33:05 +0000 From: "irar at il dot ibm.com" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/48172] [4.5/4.6/4.7 Regression] incorrect vectorization of loop in GCC 4.5.* with -O3 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: critical X-Bugzilla-Who: irar at il dot ibm.com X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.5.4 X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Date: Thu, 12 May 2011 12:46:00 -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 X-SW-Source: 2011-05/txt/msg01015.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48172 --- Comment #9 from Ira Rosen 2011-05-12 11:48:56 UTC --- (In reply to comment #8) > Created attachment 24236 [details] > patch > > Patch I'm going to test. So, segment_length = scalar_step * vf * scalar_niters? I think we don't need vf here. Also, why not do that only for different steps? Thanks, Ira