From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23369 invoked by alias); 14 Jul 2011 09:59:29 -0000 Received: (qmail 23359 invoked by uid 22791); 14 Jul 2011 09:59:29 -0000 X-SWARE-Spam-Status: No, hits=-1.9 required=5.0 tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW X-Spam-Check-By: sourceware.org Received: from mail-pv0-f175.google.com (HELO mail-pv0-f175.google.com) (74.125.83.175) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 14 Jul 2011 09:59:16 +0000 Received: by pvf24 with SMTP id 24so80893pvf.20 for ; Thu, 14 Jul 2011 02:59:15 -0700 (PDT) MIME-Version: 1.0 Received: by 10.68.14.202 with SMTP id r10mr2681749pbc.492.1310637555488; Thu, 14 Jul 2011 02:59:15 -0700 (PDT) Received: by 10.68.66.100 with HTTP; Thu, 14 Jul 2011 02:59:15 -0700 (PDT) In-Reply-To: References: <20110713232837.GA31809@hungry-tiger.westford.ibm.com> Date: Thu, 14 Jul 2011 10:04:00 -0000 Message-ID: Subject: Re: [PATCH Atom][PR middle-end/44382] Tree reassociation improvement From: Ilya Enkovich To: Richard Guenther Cc: Michael Meissner , gcc-patches@gcc.gnu.org Content-Type: text/plain; charset=ISO-8859-1 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: 2011-07/txt/msg01122.txt.bz2 2011/7/14 Richard Guenther : > > Btw, rather than a new target hook and an option I suggest to use > a --param which default you can modify in the backend. > > Richard. > Introduced target hook does not just define default value for option. It is meant to make decision in each particular case. For now it returns a constant value but march dependent heuristics will be added later. Ilya