From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 9130 invoked by alias); 13 Dec 2013 14:14:00 -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 Received: (qmail 9064 invoked by uid 48); 13 Dec 2013 14:13:54 -0000 From: "dominiq at lps dot ens.fr" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/59487] [4.9 Regression] When compiled with -fwhole-program rnflow.f90 runs up to 40% slower after r202826 Date: Fri, 13 Dec 2013 14:14:00 -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: X-Bugzilla-Severity: normal X-Bugzilla-Who: dominiq at lps dot ens.fr 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: 2013-12/txt/msg01169.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59487 --- Comment #5 from Dominique d'Humieres --- > Still the regression must appear with a different revision. > The one you cited has nothing to do with -fwhole-program. I see the slowdown with -fwhole-program for all the revisions I have tested starting at r202826 up to r205891. If this has been fixed and broken again, bissection won't give reliable results and I am not planning to test the 3000+ revisions in that range.