From owner-freebsd-current@FreeBSD.ORG Tue May 27 01:42:55 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id B2D0537B401; Tue, 27 May 2003 01:42:55 -0700 (PDT) Received: from herring.nlsystems.com (mailgate.nlsystems.com [62.49.251.130]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2C79943F3F; Tue, 27 May 2003 01:42:54 -0700 (PDT) (envelope-from dfr@nlsystems.com) Received: from herring.nlsystems.com (herring.nlsystems.com [10.0.0.2]) by herring.nlsystems.com (8.12.9/8.12.8) with ESMTP id h4R8ghRP080623; Tue, 27 May 2003 09:42:43 +0100 (BST) (envelope-from dfr@nlsystems.com) From: Doug Rabson To: freebsd-current@freebsd.org, "David O'Brien" , Anti Date: Tue, 27 May 2003 09:42:42 +0100 User-Agent: KMail/1.5 References: <200305201025.30296.jlido@goof.com> <20030522093623.30915ed0.fearow@attbi.com> <20030522173256.GA81438@dragon.nuxi.com> In-Reply-To: <20030522173256.GA81438@dragon.nuxi.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200305270942.42945.dfr@nlsystems.com> X-Spam-Status: No, hits=-26.1 required=6.0 tests=EMAIL_ATTRIBUTION,IN_REP_TO,QUOTED_EMAIL_TEXT,REFERENCES, REPLY_WITH_QUOTES,USER_AGENT version=2.50 X-Spam-Checker-Version: SpamAssassin 2.50 (1.173-2003-02-20-exp) cc: freebsd-current@freebsd.org Subject: Re: gcc/libm floating-point bug? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 May 2003 08:42:56 -0000 On Thursday 22 May 2003 6:32 pm, David O'Brien wrote: > On Thu, May 22, 2003 at 09:36:23AM -0500, Anti wrote: > > p4 should expand to "-march=pentium4 -mno-sse2" > > If we are going to make any change, it should be one we know will > deal with the issue once and for all. I also considered submitting a > patch like that, but it is too late in the game to figure out if > "-march=pentium4 -mno-sse2" would be sufficient in all cases. Even for special cases, it is hard to use -msse (or -msse2) with gcc-3.2.x since it doesn't always manage to 16-byte align the stack pointer. This makes it hard to declare local vector float variables safely. All of this appears to be fixed in gcc-3.3-prerelease at least. -- Doug Rabson Mail: dfr@nlsystems.com Phone: +44 20 8348 6160