From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21969 invoked by alias); 20 Aug 2009 09:48:19 -0000 Received: (qmail 21960 invoked by uid 22791); 20 Aug 2009 09:48:18 -0000 X-SWARE-Spam-Status: No, hits=-2.4 required=5.0 tests=AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from nef2.ens.fr (HELO nef2.ens.fr) (129.199.96.40) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 20 Aug 2009 09:48:12 +0000 Received: from mailhost.lps.ens.fr (tournesol.lps.ens.fr [129.199.120.1]) by nef2.ens.fr (8.13.6/1.01.28121999) with ESMTP id n7K9m8wn031862 ; Thu, 20 Aug 2009 11:48:08 +0200 (CEST) X-Envelope-To: gcc@gcc.gnu.org Received: from localhost (localhost [127.0.0.1]) by mailhost.lps.ens.fr (Postfix) with ESMTP id DBBF83BAB7; Thu, 20 Aug 2009 11:48:07 +0200 (CEST) Received: from mailhost.lps.ens.fr ([127.0.0.1]) by localhost (tournesol.lps.ens.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id rmgHk59Fotk7; Thu, 20 Aug 2009 11:48:07 +0200 (CEST) Received: by mailhost.lps.ens.fr (Postfix, from userid 8513) id C6A5C3BE85; Thu, 20 Aug 2009 11:48:07 +0200 (CEST) Date: Thu, 20 Aug 2009 11:20:00 -0000 To: gcc@gcc.gnu.org Cc: richard.guenther@gmail.com, Albert.Cohen@inria.fr Subject: Re: complete_unrolli / complete_unroll User-Agent: Heirloom mailx 12.1 6/15/06 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: <20090820094807.C6A5C3BE85@mailhost.lps.ens.fr> From: dominiq@lps.ens.fr (Dominique Dhumieres) 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: 2009-08/txt/msg00362.txt.bz2 IIRC another code that is "improved" by complete_unrolli is the polyhedron test induct.f90. However it gives worse results for some variants (see pr34265: induct_v2/3). > Can't we use graphite to re-roll loops? ... Is doing and undoing always some kind of work? Cheers Dominique