From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20318 invoked by alias); 4 Jan 2013 10:46:13 -0000 Received: (qmail 20254 invoked by uid 55); 4 Jan 2013 10:45:45 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug middle-end/55863] Fails to fold (i + 2) - (i + 1) to 1 Date: Fri, 04 Jan 2013 10:46:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: middle-end X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: ASSIGNED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: rguenth 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: 2013-01/txt/msg00287.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55863 --- Comment #2 from Richard Biener 2013-01-04 10:45:44 UTC --- Author: rguenth Date: Fri Jan 4 10:45:37 2013 New Revision: 194899 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194899 Log: 2013-01-04 Richard Biener PR middle-end/55863 * fold-const.c (split_tree): Undo -X - 1 to ~X folding for reassociation. * gcc.dg/fold-reassoc-2.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/fold-reassoc-2.c Modified: trunk/gcc/ChangeLog trunk/gcc/fold-const.c trunk/gcc/testsuite/ChangeLog