From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 18334 invoked by alias); 30 Sep 2007 17:00:36 -0000 Received: (qmail 18318 invoked by uid 22791); 30 Sep 2007 17:00:36 -0000 X-Spam-Check-By: sourceware.org Received: from VLSI1.ULTRA.NYU.EDU (HELO vlsi1.ultra.nyu.edu) (128.122.140.213) by sourceware.org (qpsmtpd/0.31) with SMTP; Sun, 30 Sep 2007 17:00:35 +0000 Received: by vlsi1.ultra.nyu.edu (4.1/1.34) id AA28271; Sun, 30 Sep 07 13:04:56 EDT From: kenner@vlsi1.ultra.nyu.edu (Richard Kenner) Message-Id: <10709301704.AA28271@vlsi1.ultra.nyu.edu> Date: Sun, 30 Sep 2007 21:16:00 -0000 To: richard.guenther@gmail.com Subject: Re: [PATCH] Fix optimization regression in constant folder Cc: ebotcazou@adacore.com, gcc-patches@gcc.gnu.org, iant@google.com In-Reply-To: <84fc9c000709300930u590453a7m708f13b0e9d50aa4@mail.gmail.com> References: <200709171539.26653.ebotcazou@adacore.com> <200709301522.01416.ebotcazou@adacore.com> <84fc9c000709300626k56568fa3g2a2a6f58f1bca726@mail.gmail.com> <200709301801.39718.ebotcazou@adacore.com> <10709301625.AA26004@vlsi1.ultra.nyu.edu> <84fc9c000709300930u590453a7m708f13b0e9d50aa4@mail.gmail.com> 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: 2007-09/txt/msg02106.txt.bz2 > > I agree because they are both always known to be much better behaved than > > any user type and one of the most critical types to optimize. It will > > always be the case that many more optimizations are both safe and > > important for those types than for user types. > > Please show testcases. I'm making a general comment about strategies, not a specific optimization.