From owner-freebsd-current@FreeBSD.ORG  Tue May 20 11:00:08 2003
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
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 D981B37B401
	for <freebsd-current@FreeBSD.ORG>;
	Tue, 20 May 2003 11:00:08 -0700 (PDT)
Received: from HAL9000.homeunix.com (12-233-57-131.client.attbi.com
	[12.233.57.131])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 2CCD443F93
	for <freebsd-current@FreeBSD.ORG>;
	Tue, 20 May 2003 11:00:08 -0700 (PDT)	(envelope-from das@FreeBSD.ORG)
Received: from HAL9000.homeunix.com (localhost [127.0.0.1])
	by HAL9000.homeunix.com (8.12.9/8.12.5) with ESMTP id h4KI06qN002461;
	Tue, 20 May 2003 11:00:06 -0700 (PDT)
	(envelope-from das@FreeBSD.ORG)
Received: (from das@localhost)
	by HAL9000.homeunix.com (8.12.9/8.12.5/Submit) id h4KI04fZ002460;
	Tue, 20 May 2003 11:00:04 -0700 (PDT)
	(envelope-from das@FreeBSD.ORG)
Date: Tue, 20 May 2003 11:00:04 -0700
From: David Schultz <das@FreeBSD.ORG>
To: Jon Lido <jlido@goof.com>
Message-ID: <20030520180004.GA2372@HAL9000.homeunix.com>
Mail-Followup-To: Jon Lido <jlido@goof.com>,
	Morten Rodal <morten@rodal.no>, freebsd-current@freebsd.org
References: <200305201025.30296.jlido@goof.com>
	<20030520152856.GA530@atlantis.rodal.no> <200305201216.10964.jlido@goof.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <200305201216.10964.jlido@goof.com>
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
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 20 May 2003 18:00:09 -0000

On Tue, May 20, 2003, Jon Lido wrote:
> Well, I do have a P4, and had built everything with -march=pentium4.  However, 
> rebuilding the kernel and modules with -march=pentium3 produces the same 
> results.

This isn't a kernel problem, so you need to rebuild libm and libc
without -march=pentium4.  You really don't want to be using the
Pentium 4 optimizations in gcc 3.2 anyway; the generated code is
generally slower.  gcc 3.3 has fixes for a number of the bugs, but
I don't know about the performance problems.