From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 19479 invoked by alias); 7 Mar 2008 09:48:34 -0000 Received: (qmail 19388 invoked by alias); 7 Mar 2008 09:47:52 -0000 Date: Fri, 07 Mar 2008 09:48:00 -0000 Message-ID: <20080307094752.19387.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/35472] [4.3 Regression] tree DSE is broken In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "rguenth at gcc dot gnu dot org" 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: 2008-03/txt/msg00474.txt.bz2 ------- Comment #5 from rguenth at gcc dot gnu dot org 2008-03-07 09:47 ------- Subject: Bug 35472 Author: rguenth Date: Fri Mar 7 09:47:06 2008 New Revision: 133004 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=133004 Log: 2008-03-07 Richard Guenther PR tree-optimization/35472 * tree-ssa-dse.c (dse_optimize_stmt): Do not delete a store whose single use_stmt has a overlapping set of loaded and stored symbols as that use_stmt might be a noop assignment then. * gcc.c-torture/execute/pr35472.c: New testcase. Added: branches/gcc-4_3-branch/gcc/testsuite/gcc.c-torture/execute/pr35472.c - copied unchanged from r132899, trunk/gcc/testsuite/gcc.c-torture/execute/pr35472.c Modified: branches/gcc-4_3-branch/gcc/ChangeLog branches/gcc-4_3-branch/gcc/testsuite/ChangeLog branches/gcc-4_3-branch/gcc/tree-ssa-dse.c -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35472