From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23129 invoked by alias); 12 Apr 2011 15:01:19 -0000 Received: (qmail 23120 invoked by uid 22791); 12 Apr 2011 15:01:18 -0000 X-SWARE-Spam-Status: No, hits=-2.2 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-yw0-f47.google.com (HELO mail-yw0-f47.google.com) (209.85.213.47) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 12 Apr 2011 15:01:12 +0000 Received: by ywg8 with SMTP id 8so3782568ywg.20 for ; Tue, 12 Apr 2011 08:01:11 -0700 (PDT) MIME-Version: 1.0 Received: by 10.101.208.8 with SMTP id k8mr1984777anq.159.1302620471622; Tue, 12 Apr 2011 08:01:11 -0700 (PDT) Received: by 10.100.214.4 with HTTP; Tue, 12 Apr 2011 08:01:11 -0700 (PDT) In-Reply-To: References: <20110412141626.GF23480@codesourcery.com> <20110412143205.GG23480@codesourcery.com> Date: Tue, 12 Apr 2011 15:01:00 -0000 Message-ID: Subject: Re: [PATCH] add statistics counting to postreload, copy-rename, and math-opts From: Steven Bosscher To: Richard Guenther Cc: Nathan Froyd , gcc-patches@gcc.gnu.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable 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: 2011-04/txt/msg00898.txt.bz2 On Tue, Apr 12, 2011 at 4:37 PM, Richard Guenther wrote: > Yes, I used it exactly for that. =A0And also to verify that passes don't > do anything if replicated (well, for those that shouldn't at least). What about passes that undo the work of previous patches -- and then followed by a patch that re-does the changes? Think CPROP -> loop-invariant -> CPROP, and I'm sure there are other examples. That kind of thing makes the statistics gathering a bit suspect... Ciao! Steven