From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26107 invoked by alias); 31 Oct 2012 12:34:32 -0000 Received: (qmail 26055 invoked by uid 22791); 31 Oct 2012 12:34:30 -0000 X-SWARE-Spam-Status: No, hits=-6.7 required=5.0 tests=AWL,BAYES_00,KHOP_RCVD_UNTRUST,RCVD_IN_DNSWL_HI,RCVD_IN_HOSTKARMA_W,RP_MATCHES_RCVD,SPF_HELO_PASS X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 31 Oct 2012 12:34:12 +0000 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q9VCYCos011721 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 31 Oct 2012 08:34:12 -0400 Received: from zalov.redhat.com (vpn1-6-190.ams2.redhat.com [10.36.6.190]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id q9VCYAJf026646 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 31 Oct 2012 08:34:11 -0400 Received: from zalov.cz (localhost [127.0.0.1]) by zalov.redhat.com (8.14.5/8.14.5) with ESMTP id q9VCY9VE019622; Wed, 31 Oct 2012 13:34:09 +0100 Received: (from jakub@localhost) by zalov.cz (8.14.5/8.14.5/Submit) id q9VCY9Xg019621; Wed, 31 Oct 2012 13:34:09 +0100 Date: Wed, 31 Oct 2012 12:36:00 -0000 From: Jakub Jelinek To: Richard Biener Cc: Jan Hubicka , gcc-patches@gcc.gnu.org Subject: Re: Non-dominating loop bounds in tree-ssa-loop-niter 3/4 Message-ID: <20121031123408.GH1752@tucnak.redhat.com> Reply-To: Jakub Jelinek References: <20121031103949.GD19020@kam.mff.cuni.cz> <20121031120359.GA13132@kam.mff.cuni.cz> <20121031122234.GA15866@kam.mff.cuni.cz> 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 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 X-SW-Source: 2012-10/txt/msg02911.txt.bz2 On Wed, Oct 31, 2012 at 01:30:02PM +0100, Richard Biener wrote: > On Wed, 31 Oct 2012, Jan Hubicka wrote: > > > unroll you mean. Because unrolling mutates the CFG too much. > > > Well - it was just a starting point, populating -Og with as little > > > as possible and 100% profitable transforms (in both debug and speed > > > metric). In late opts we only do (early opt queue is shared): > > > > Well, and what about early cunrolli? > > It's not there (and I would disable it for -Og). Generally, most of the loop transforms are undesirable for -Og. Jakub