From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11786 invoked by alias); 26 Jan 2011 10:23:37 -0000 Received: (qmail 11736 invoked by uid 22791); 26 Jan 2011 10:23:36 -0000 X-SWARE-Spam-Status: No, hits=-2.9 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; Wed, 26 Jan 2011 10:23:31 +0000 From: "dominiq at lps dot ens.fr" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/40979] induct benchmark 60% slower when compiled with -fgraphite-identity X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: dominiq at lps dot ens.fr X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: spop at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- 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: Wed, 26 Jan 2011 10:45:00 -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: 2011-01/txt/msg02795.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40979 --- Comment #9 from Dominique d'Humieres 2011-01-26 10:23:12 UTC --- This pr is not fixed at revision 169261 (gfc). AFAIU -ftree-loop-linear is now implemented through graphite. This leads to a sort of regression with respect to revision 169227(gfc6): [macbook] lin/test% gfc -Ofast -ftree-loop-linear induct.f90 [macbook] lin/test% time a.out > /dev/null 22.380u 0.023s 0:22.40 100.0% 0+0k 0+0io 0pf+0w [macbook] lin/test% gfc6 -Ofast -ftree-loop-linear induct.f90 [macbook] lin/test% time a.out > /dev/null 13.978u 0.019s 0:13.99 99.9% 0+0k 0+0io 0pf+0w