From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17194 invoked by alias); 1 Apr 2011 18:59:51 -0000 Received: (qmail 17185 invoked by uid 22791); 1 Apr 2011 18:59:50 -0000 X-SWARE-Spam-Status: No, hits=-2.3 required=5.0 tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,TW_FC X-Spam-Check-By: sourceware.org Received: from mail-iy0-f175.google.com (HELO mail-iy0-f175.google.com) (209.85.210.175) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 01 Apr 2011 18:59:44 +0000 Received: by iye7 with SMTP id 7so4956227iye.20 for ; Fri, 01 Apr 2011 11:59:43 -0700 (PDT) MIME-Version: 1.0 Received: by 10.43.49.8 with SMTP id uy8mr3466883icb.252.1301684383451; Fri, 01 Apr 2011 11:59:43 -0700 (PDT) Received: by 10.43.51.129 with HTTP; Fri, 1 Apr 2011 11:59:43 -0700 (PDT) In-Reply-To: <4D8A0786.4060509@codesourcery.com> References: <4D8A0703.9090306@codesourcery.com> <4D8A0786.4060509@codesourcery.com> Date: Fri, 01 Apr 2011 18:59:00 -0000 Message-ID: Subject: Re: [PATCH 1/6] Disallow predicating the prologue From: "H.J. Lu" To: Bernd Schmidt Cc: GCC Patches Content-Type: text/plain; charset=ISO-8859-1 X-IsSubscribed: yes Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org X-SW-Source: 2011-04/txt/msg00080.txt.bz2 On Wed, Mar 23, 2011 at 7:45 AM, Bernd Schmidt wrote: > With prologues appearing in blocks other than the entry block, ifcvt can > decide to predicate them. This is not a good idea, as dwarf2out will > blow up trying to handle predicated frame-related things. > One of your changes breaks GCC bootstrap: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48403 -- H.J.