From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 27352 invoked by alias); 13 Sep 2011 08:01:07 -0000 Received: (qmail 27325 invoked by uid 22791); 13 Sep 2011 08:01:05 -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; Tue, 13 Sep 2011 08:00:49 +0000 From: "Joost.VandeVondele at pci dot uzh.ch" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/38306] [4.4/4.5/4.6/4.7 Regression] 15% slowdown w.r.t. 4.3 of computational kernel on some architectures Date: Tue, 13 Sep 2011 08:30:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: Joost.VandeVondele at pci dot uzh.ch X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.4.7 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: 2011-09/txt/msg00869.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38306 --- Comment #27 from Joost VandeVondele 2011-09-13 07:59:06 UTC --- (In reply to comment #25) > 2) Then find the earliest optimization pass where they differ (you may even use > diff to make this faster). The first point where things differ for PD2VAL is pr38306_xxx.f90.057t.cunrolli afterwards, everything seems fully different.