From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8903 invoked by alias); 25 Jun 2014 18:34:54 -0000 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 Received: (qmail 8880 invoked by uid 89); 25 Jun 2014 18:34:54 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.6 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS,SPF_PASS,T_RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Wed, 25 Jun 2014 18:34:51 +0000 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s5PIYnn0011731 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 25 Jun 2014 14:34:49 -0400 Received: from stumpy.slc.redhat.com (ovpn-113-44.phx2.redhat.com [10.3.113.44]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id s5PIYmb4028962; Wed, 25 Jun 2014 14:34:48 -0400 Message-ID: <53AB1648.1060008@redhat.com> Date: Wed, 25 Jun 2014 18:34:00 -0000 From: Jeff Law User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 MIME-Version: 1.0 To: Richard Biener , gcc-patches@gcc.gnu.org Subject: Re: [PATCH] Fix parts of PR61607 References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2014-06/txt/msg02048.txt.bz2 On 06/25/14 08:06, Richard Biener wrote: > > This removes prematurely killing loops during jump threading > and moves it to a spot where we know we didn't cancel the > jump thread. > > Bootstrapped on x86_64-unknown-linux-gnu, testing in progress. > > Ok? > > Thanks, > Richard. > > 2014-06-25 Richard Biener > > PR tree-optimization/61607 > * tree-ssa-threadupdate.c (ssa_redirect_edges): Cancel the > loop if we redirected its latch edge. > (thread_block_1): Do not cancel loops prematurely. This is fine. Looking at how often we prematurely cancel loops has been on my todo list for a while. Thanks for taking care of it. jeff