From owner-freebsd-stable@FreeBSD.ORG Thu Sep 14 00:07:37 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 74B6716A407 for ; Thu, 14 Sep 2006 00:07:37 +0000 (UTC) (envelope-from anthony.maher@uts.edu.au) Received: from dib.itd.uts.edu.au (dib.itd.uts.edu.au [138.25.22.74]) by mx1.FreeBSD.org (Postfix) with ESMTP id 034EE43D45 for ; Thu, 14 Sep 2006 00:07:36 +0000 (GMT) (envelope-from anthony.maher@uts.edu.au) Received: by dib.itd.uts.edu.au (Postfix, from userid 1011) id 3B259DFDC3; Thu, 14 Sep 2006 10:03:28 +1000 (EST) Received: from localhost (localhost [127.0.0.1]) by dib.itd.uts.edu.au (Postfix/Intermediary) with ESMTP id 2C1FADFE5A; Thu, 14 Sep 2006 10:03:28 +1000 (EST) Received: from vimes (vimes.itd.uts.edu.au [138.25.243.34]) by dib.itd.uts.edu.au (Postfix/Ingress) with ESMTP id 19801DFDC3; Thu, 14 Sep 2006 10:03:28 +1000 (EST) Received: from [138.25.81.112] by postoffice.uts.edu.au (Sun Java System Messaging Server 6.2-4.03 (built Sep 22 2005)) with ESMTPS id <0J5K0031X30N0360@postoffice.uts.edu.au>; Thu, 14 Sep 2006 10:07:35 +1000 (EST) Date: Thu, 14 Sep 2006 10:07:35 +1000 From: Tony Maher In-reply-to: <20060913234934.GA92067@thought.org> To: Gary Kline Message-id: <45089D47.6070005@uts.edu.au> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7BIT X-Accept-Language: en-us, en X-Enigmail-Version: 0.93.0.0 References: <200609130905.k8D95idk062789@lurza.secnetix.de> <4507CC9B.60704@sun-fish.com> <20060913234934.GA92067@thought.org> User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.13) Gecko/20060511 Cc: freebsd-stable@freebsd.org, Stefan Lambrev Subject: Re: optimization levels for 6-STABLE build{kernel,world} X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 14 Sep 2006 00:07:37 -0000 Gary Kline wrote: > > > A couple of things. Will having gcc unroll loops have any > negative consequences? (I can't imagine how:: but better > informed than to have something crash inexplicability.) > With 6.X safe at -O2 and with -funroll-loops, that should be > a slight gain, right? (It also will make an upgrade from 5.5 > to 6.[12] that much more rational.) -funroll-loops affect loader see http://lists.freebsd.org/pipermail/freebsd-stable/2006-September/028145.html -- tonym