From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 78770 invoked by alias); 8 Sep 2016 17:55:17 -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 78757 invoked by uid 89); 8 Sep 2016 17:55:16 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-3.2 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy=Hx-languages-length:385 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 ESMTP; Thu, 08 Sep 2016 17:55:06 +0000 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 6F0D861978; Thu, 8 Sep 2016 17:55:05 +0000 (UTC) Received: from localhost.localdomain (ovpn-116-111.phx2.redhat.com [10.3.116.111]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u88Ht4fx011949; Thu, 8 Sep 2016 13:55:05 -0400 Subject: Re: [PATCH 7/9] cprop: Leave RTX_FRAME_RELATED_P instructions alone To: Segher Boessenkool , gcc-patches@gcc.gnu.org References: <9adf81ea9825b4c605cf02022817970a3b0d2cb8.1470015604.git.segher@kernel.crashing.org> Cc: bschmidt@redhat.com From: Jeff Law Message-ID: <8e9f3ff5-6ef1-ca66-3d5b-18c7e1f09487@redhat.com> Date: Thu, 08 Sep 2016 18:34:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: <9adf81ea9825b4c605cf02022817970a3b0d2cb8.1470015604.git.segher@kernel.crashing.org> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2016-09/txt/msg00463.txt.bz2 On 07/31/2016 07:42 PM, Segher Boessenkool wrote: > Doing cprop on frame-related instructions blows up spectacularly. > So don't. > > 2016-06-07 Segher Boessenkool > > * regcprop.c (copyprop_hardreg_forward_1): Don't change > RTX_FRAME_RELATED_P instructions. Example or testcase? jeff