From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21700 invoked by alias); 13 Jan 2014 18:59:12 -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 21689 invoked by uid 89); 13 Jan 2014 18:59:12 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-3.8 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS,SPF_PASS 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 ESMTP; Mon, 13 Jan 2014 18:59:11 +0000 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s0DIx92I000798 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 13 Jan 2014 13:59:09 -0500 Received: from tucnak.zalov.cz (vpn1-6-246.ams2.redhat.com [10.36.6.246]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id s0DIx8dX030152 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 13 Jan 2014 13:59:09 -0500 Received: from tucnak.zalov.cz (localhost [127.0.0.1]) by tucnak.zalov.cz (8.14.7/8.14.7) with ESMTP id s0DIx7bB000932; Mon, 13 Jan 2014 19:59:07 +0100 Received: (from jakub@localhost) by tucnak.zalov.cz (8.14.7/8.14.7/Submit) id s0DIx6w5000931; Mon, 13 Jan 2014 19:59:06 +0100 Date: Mon, 13 Jan 2014 18:59:00 -0000 From: Jakub Jelinek To: Uros Bizjak Cc: Kirill Yukhin , Richard Biener , "gcc-patches@gcc.gnu.org" Subject: Re: Patch ping Message-ID: <20140113185906.GB892@tucnak.redhat.com> Reply-To: Jakub Jelinek References: <20140113080711.GS892@tucnak.redhat.com> <20140113083501.GT892@tucnak.redhat.com> <20140113182613.GD24431@msticlxl57.ims.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-IsSubscribed: yes X-SW-Source: 2014-01/txt/msg00745.txt.bz2 On Mon, Jan 13, 2014 at 07:40:16PM +0100, Uros Bizjak wrote: > An unrelated observation: gcc should figure out that %k1 mask register > can be used in all gather insns and avoid unnecessary copies at the > beginning of the loop. I thought about that too, even started modifying sse.md, but then I read the spec and the AVX512F gather insns overwrite the mask register (like it does for the vector mask register in AVX2 case). Jakub