From owner-freebsd-alpha@FreeBSD.ORG Fri Jan 14 00:19:07 2005 Return-Path: Delivered-To: freebsd-alpha@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B940B16A4CE for ; Fri, 14 Jan 2005 00:19:07 +0000 (GMT) Received: from dragon.nuxi.com (trang.nuxi.com [66.93.134.19]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3F5F943D58 for ; Fri, 14 Jan 2005 00:19:07 +0000 (GMT) (envelope-from obrien@NUXI.com) Received: from dragon.nuxi.com (obrien@localhost [127.0.0.1]) by dragon.nuxi.com (8.13.1/8.13.1) with ESMTP id j0E0Ixdd052417; Thu, 13 Jan 2005 16:18:59 -0800 (PST) (envelope-from obrien@dragon.nuxi.com) Received: (from obrien@localhost) by dragon.nuxi.com (8.13.1/8.13.1/Submit) id j0E0IwU7052412; Thu, 13 Jan 2005 16:18:58 -0800 (PST) (envelope-from obrien) Date: Thu, 13 Jan 2005 16:18:58 -0800 From: "David O'Brien" To: Angus MacGyver Message-ID: <20050114001858.GB29445@dragon.nuxi.com> References: <1105601068.4123.4767.camel@yavin4.calibre-solutions.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1105601068.4123.4767.camel@yavin4.calibre-solutions.co.uk> User-Agent: Mutt/1.4.1i X-Operating-System: FreeBSD 6.0-CURRENT Organization: The NUXI BSD Group X-Pgp-Rsa-Fingerprint: B7 4D 3E E9 11 39 5F A3 90 76 5D 69 58 D9 98 7A X-Pgp-Rsa-Keyid: 1024/34F9F9D5 cc: freebsd-alpha@freebsd.org Subject: Re: Question... Alpha Compile optimizations.... X-BeenThere: freebsd-alpha@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: freebsd-alpha@freebsd.org List-Id: Porting FreeBSD to the Alpha List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Jan 2005 00:19:07 -0000 On Thu, Jan 13, 2005 at 07:24:28AM +0000, Angus MacGyver wrote: > I've been using FreeBSD on an Alpha (164LX and 164SX) for a while, and > have done some re-compiles of programs using some of the optimization > flags in make.conf... > .... no problem.. > > I am just wondering, after reading the sample make.conf from > 5.3-RELEASE, what is the nature of the bugs that MAY appear if I use > > CFLAGS= -O2 -pipe > > as the optimisation flags. -O2 should be fine provided you also use -fno-strict-aliasing. -- -- David (obrien@FreeBSD.org)