From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32680 invoked by alias); 26 Nov 2013 09:04:50 -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 32630 invoked by uid 55); 26 Nov 2013 09:04:47 -0000 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/59287] points-to analysis confused by union accesses Date: Tue, 26 Nov 2013 09:04:00 -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: 4.9.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth 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: --- 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: 2013-11/txt/msg02645.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59287 --- Comment #1 from Richard Biener --- Author: rguenth Date: Tue Nov 26 09:04:44 2013 New Revision: 205380 URL: http://gcc.gnu.org/viewcvs?rev=205380&root=gcc&view=rev Log: 2013-11-26 Richard Biener PR tree-optimization/59287 * tree-ssa-structalias.c (get_constraint_for_component_ref): Remove no longer necessary special-casing of union accesses. * gcc.dg/tree-ssa/alias-29.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/alias-29.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-structalias.c