From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5840 invoked by alias); 18 Feb 2015 09:49:38 -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 3596 invoked by uid 55); 18 Feb 2015 09:49:30 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/62217] [4.9/5 Regression] DOM confuses complete unrolling which in turn causes VRP to warn Date: Wed, 18 Feb 2015 09:49:00 -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: 4.9.2 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.9.3 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/msg01969.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62217 --- Comment #15 from Richard Biener --- Author: rguenth Date: Wed Feb 18 09:48:57 2015 New Revision: 220785 URL: https://gcc.gnu.org/viewcvs?rev=220785&root=gcc&view=rev Log: 2015-02-18 Richard Biener PR tree-optimization/62217 * tree-ssa-dom.c (cprop_operand): Avoid propagating copies into BIVs. * gcc.dg/tree-ssa/cunroll-11.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/cunroll-11.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-dom.c