From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17736 invoked by alias); 20 Feb 2015 16:58:46 -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 Received: (qmail 17674 invoked by uid 55); 20 Feb 2015 16:58:43 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/65136] [5 Regression] VRP inserts unnecessary constant copy in the loop Date: Fri, 20 Feb 2015 17:05:00 -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-Version: 5.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: RESOLVED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org X-Bugzilla-Target-Milestone: 5.0 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-02/txt/msg02308.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65136 --- Comment #5 from Richard Biener --- Author: rguenth Date: Fri Feb 20 16:58:11 2015 New Revision: 220876 URL: https://gcc.gnu.org/viewcvs?rev=220876&root=gcc&view=rev Log: 2015-02-20 Richard Biener PR tree-optimization/65136 * tree-ssa-propagate.c: Include cfgloop.h. (replace_phi_args_in): Avoid replacing loop latch edge PHI arguments with constants. * gcc.dg/tree-ssa/pr65136.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/pr65136.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-propagate.c