From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23422 invoked by alias); 15 Nov 2007 16:06:43 -0000 Received: (qmail 23369 invoked by uid 48); 15 Nov 2007 16:06:30 -0000 Date: Thu, 15 Nov 2007 16:06:00 -0000 Message-ID: <20071115160630.23368.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/34099] [4.3 Regression] optimizer problem 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: 2007-11/txt/msg01401.txt.bz2 ------- Comment #9 from rguenth at gcc dot gnu dot org 2007-11-15 16:06 ------- Created an attachment (id=14557) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14557&action=view) broken patch It miscompiles gengtype. I remember problems with changing likely_value in similar ways back in time. The other option is to not ignore UNDEFINED lattice values in ccp_lattice_meet but do any M UNDEFINED = VARYING instead of any M UNDEFINED = any -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34099