From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31082 invoked by alias); 15 Dec 2011 20:51:54 -0000 Received: (qmail 31072 invoked by uid 22791); 15 Dec 2011 20:51:52 -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; Thu, 15 Dec 2011 20:51:40 +0000 From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug rtl-optimization/50101] [4.5/4.6 regression] GCC 4.5 and 4.6 generate suboptimal code on ppc for countdown loops when the CTR register cannot be used Date: Thu, 15 Dec 2011 20:53:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: rtl-optimization X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.5.4 X-Bugzilla-Changed-Fields: Keywords Target Milestone Summary 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: 2011-12/txt/msg01730.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50101 Andrew Pinski changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |missed-optimization Target Milestone|--- |4.5.4 Summary|GCC 4.5 and 4.6 generate |[4.5/4.6 regression] GCC |suboptimal code on ppc for |4.5 and 4.6 generate |countdown loops when the |suboptimal code on ppc for |CTR register cannot be used |countdown loops when the | |CTR register cannot be used