From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 16628 invoked by alias); 25 Jul 2011 16:28:48 -0000 Received: (qmail 16619 invoked by uid 22791); 25 Jul 2011 16:28:46 -0000 X-SWARE-Spam-Status: No, hits=-2.3 required=5.0 tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,RP_MATCHES_RCVD,SPF_HELO_PASS X-Spam-Check-By: sourceware.org Received: from smtp-out.google.com (HELO smtp-out.google.com) (216.239.44.51) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 25 Jul 2011 16:28:31 +0000 Received: from hpaq1.eem.corp.google.com (hpaq1.eem.corp.google.com [172.25.149.1]) by smtp-out.google.com with ESMTP id p6PGSUHr004691 for ; Mon, 25 Jul 2011 09:28:30 -0700 Received: from gyb13 (gyb13.prod.google.com [10.243.49.77]) by hpaq1.eem.corp.google.com with ESMTP id p6PGSFvq028547 (version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=NOT) for ; Mon, 25 Jul 2011 09:28:28 -0700 Received: by gyb13 with SMTP id 13so2550600gyb.15 for ; Mon, 25 Jul 2011 09:28:28 -0700 (PDT) MIME-Version: 1.0 Received: by 10.150.238.19 with SMTP id l19mr2284506ybh.301.1311611308260; Mon, 25 Jul 2011 09:28:28 -0700 (PDT) Received: by 10.150.97.8 with HTTP; Mon, 25 Jul 2011 09:28:28 -0700 (PDT) In-Reply-To: <4E2D4425.9040104@gnu.org> References: <4E25F810.6050904@redhat.com> <4E2D4425.9040104@gnu.org> Date: Mon, 25 Jul 2011 18:40:00 -0000 Message-ID: Subject: Re: [RFC] Remove -freorder-blocks-and-partition From: Xinliang David Li To: Paolo Bonzini Cc: Richard Henderson , "gcc@gcc.gnu.org" Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-System-Of-Record: true X-IsSubscribed: yes Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-owner@gcc.gnu.org X-SW-Source: 2011-07/txt/msg00452.txt.bz2 On Mon, Jul 25, 2011 at 3:23 AM, Paolo Bonzini wrote: > On 07/25/2011 06:42 AM, Xinliang David Li wrote: >> >> FYI =A0the performance impact of this option with SPEC06 (built with >> google_46 compiler and measured on a core2 box). =A0The base line number >> is FDO, and ref number is FDO + reorder_with_partitioning. >> >> xalancbmk improves> =A03.5% >> perlbench improves> =A01.5% >> dealII and bzip2 degrades about 1.4%. >> >> Note the partitioning scheme is not tuned at all -- there is not even >> a tunable parameter to play with. > > Did you check what is pushed down to the cold section in these cases? I have not done any analysis on them . David > > Paolo >