From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 15770 invoked by alias); 26 Jul 2012 10:19:12 -0000 Received: (qmail 15760 invoked by uid 22791); 26 Jul 2012 10:19:11 -0000 X-SWARE-Spam-Status: No, hits=-4.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED 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, 26 Jul 2012 10:18:56 +0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/53957] Polyhedron 11 benchmark: MP_PROP_DESIGN twice as long as other compiler Date: Thu, 26 Jul 2012 10:19:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: fortran X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned 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 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: 2012-07/txt/msg01967.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53957 --- Comment #9 from Richard Guenther 2012-07-26 10:18:55 UTC --- (In reply to comment #8) > (In reply to comment #7) > > so it would be still worthwhile to pursue your patch if it does not have > > negative effects elsewhere. We should be able to fix the induction code > > to handle this case. > > Regarding negative (or positive) impact with regards to performance: That's > difficult to test :-( > > However, with the patch, f951 stops with the following ICE > internal compiler error: in free_regset_pool, at sel-sched-ir.c:994 > with gfortran.dg/pr42294.f and gfortran.dg/pr44691.f. That's a pre-existing issue on current trunk, unrelated to the patch.