From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31319 invoked by alias); 28 Aug 2012 07:05:22 -0000 Received: (qmail 31268 invoked by uid 22791); 28 Aug 2012 07:05:20 -0000 X-SWARE-Spam-Status: No, hits=-4.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED,TW_FC 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, 28 Aug 2012 07:05:06 +0000 From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/53395] [4.8 Regression] The LAPACK functions i(d|s)amax are more than two times slower after revision 187183 Date: Tue, 28 Aug 2012 07:05:00 -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-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: pinskia at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.8.0 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: 2012-08/txt/msg01832.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53395 --- Comment #9 from Andrew Pinski 2012-08-28 07:04:52 UTC --- While working on this, I noticed that sometimes we don't produce what the x86 back-end calls IEEE MIN/MAX either but that is a different issue all together and I have a fix for that (I ran into that while implementing improving the last phi-opt that also converts those PHIs into COND_EXPR like ifcvt does).