From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 62915 invoked by alias); 14 Oct 2015 17:26:25 -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 62900 invoked by uid 89); 14 Oct 2015 17:26:22 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.7 required=5.0 tests=AWL,BAYES_00,SPF_HELO_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, 14 Oct 2015 17:26:22 +0000 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (Postfix) with ESMTPS id E8C6F8F272; Wed, 14 Oct 2015 17:26:20 +0000 (UTC) Received: from localhost.localdomain (ovpn-113-105.phx2.redhat.com [10.3.113.105]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id t9EHQK3V018436; Wed, 14 Oct 2015 13:26:20 -0400 Subject: Re: Handle CONSTRUCTOR in operand_equal_p To: Jan Hubicka , gcc-patches@gcc.gnu.org, rguenther@suse.de References: <20151014162702.GD16672@kam.mff.cuni.cz> From: Jeff Law Message-ID: <561E903C.2070901@redhat.com> Date: Wed, 14 Oct 2015 17:26:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: <20151014162702.GD16672@kam.mff.cuni.cz> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2015-10/txt/msg01398.txt.bz2 On 10/14/2015 10:27 AM, Jan Hubicka wrote: > Hi, > this patch adds the CONSTRUCTOR case discussed while back. Only empty > constructors are matched, as those are only appearing in gimple operand. > I tested that during bootstrap about 7500 matches are for empty ctors. > There are couple hundred for non-empty probably used on generic. > > Bootstrapped/regtested x86_64-linux, OK? > > Honza > > * fold-const.c (operand_equal_p): Match empty constructors. OK. It'd be useful to have a test which shows that matching these results in some kind of difference we can see in the dump files. jeff