From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31110 invoked by alias); 17 Feb 2011 19:42:02 -0000 Received: (qmail 31099 invoked by uid 22791); 17 Feb 2011 19:42:01 -0000 X-SWARE-Spam-Status: No, hits=-2.7 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; Thu, 17 Feb 2011 19:41:57 +0000 From: "law at redhat dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/45685] [4.6 Regression] missed conditional move opportunity in loop 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: law at redhat dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.7.0 X-Bugzilla-Changed-Fields: Blocks Target Milestone 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: Thu, 17 Feb 2011 19:47:00 -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: 2011-02/txt/msg02072.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45685 Jeffrey A. Law changed: What |Removed |Added ---------------------------------------------------------------------------- Blocks| |42632 Target Milestone|4.6.0 |4.7.0 --- Comment #17 from Jeffrey A. Law 2011-02-17 19:41:27 UTC --- Potential fix is attached. Gets the desired code, triggers several hundred times during a bootstrap. Haven't checked compile-time, runtime performance or codesize issues. Did verify bootstrap & regression test were on x86_64-unknown-linux-gnu. Clearly not stage4 material.