From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23184 invoked by alias); 12 Mar 2007 16:01:17 -0000 Received: (qmail 23121 invoked by uid 48); 12 Mar 2007 16:01:03 -0000 Date: Mon, 12 Mar 2007 16:01:00 -0000 Message-ID: <20070312160103.23120.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/31146] forwprop does not look through casts 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: 2007-03/txt/msg01066.txt.bz2 ------- Comment #5 from rguenth at gcc dot gnu dot org 2007-03-12 16:01 ------- Well sure - if we then would get int *p_1 = &a[0]; void *q_1 = (void *)p_1; int *r_1 = (int *)q_1; if (r_1 != NULL) ... then FRE would figure out that r_1 == p_1 and the forwprop pass after FRE will fold the comparison. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31146