From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11219 invoked by alias); 27 Feb 2012 03:39:06 -0000 Received: (qmail 11190 invoked by uid 22791); 27 Feb 2012 03:39:04 -0000 X-SWARE-Spam-Status: No, hits=-2.8 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; Mon, 27 Feb 2012 03:38:52 +0000 From: "pinskia at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/34417] simplify '(x & A) % B' if 'B > A/2' Date: Mon, 27 Feb 2012 04:27:00 -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: enhancement X-Bugzilla-Who: pinskia at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- 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: 2012-02/txt/msg02513.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34417 --- Comment #2 from Andrew Pinski 2012-02-27 03:38:48 UTC --- (In reply to comment #1) > Confirmed. > > VRP could do this, though we generally avoid creating control flow and extra > basic blocks here. We could create a COND_EXPR here, though I don't know if that would be a good idea on some targets.