From owner-freebsd-toolchain@FreeBSD.ORG Wed Sep 12 22:42:34 2012 Return-Path: Delivered-To: toolchain@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id E1AFE106564A; Wed, 12 Sep 2012 22:42:34 +0000 (UTC) (envelope-from nwhitehorn@freebsd.org) Received: from agogare.doit.wisc.edu (agogare.doit.wisc.edu [144.92.197.211]) by mx1.freebsd.org (Postfix) with ESMTP id AD0AD8FC08; Wed, 12 Sep 2012 22:42:34 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; CHARSET=US-ASCII; format=flowed Received: from avs-daemon.smtpauth2.wiscmail.wisc.edu by smtpauth2.wiscmail.wisc.edu (Sun Java(tm) System Messaging Server 7u2-7.05 32bit (built Jul 30 2009)) id <0MA900D02AYSJQ00@smtpauth2.wiscmail.wisc.edu>; Wed, 12 Sep 2012 16:42:28 -0500 (CDT) Received: from wanderer.tachypleus.net ([unknown] [128.104.255.7]) by smtpauth2.wiscmail.wisc.edu (Sun Java(tm) System Messaging Server 7u2-7.05 32bit (built Jul 30 2009)) with ESMTPSA id <0MA9000BSAYRAQ20@smtpauth2.wiscmail.wisc.edu>; Wed, 12 Sep 2012 16:42:28 -0500 (CDT) Date: Wed, 12 Sep 2012 16:42:27 -0500 From: Nathan Whitehorn In-reply-to: <504F5101.8090906@FreeBSD.org> To: Dimitry Andric Message-id: <505101C3.70203@freebsd.org> X-Spam-Report: AuthenticatedSender=yes, SenderIP=128.104.255.7 X-Spam-PmxInfo: Server=avs-14, Version=5.6.1.2065439, Antispam-Engine: 2.7.2.376379, Antispam-Data: 2012.9.12.213030, SenderIP=128.104.255.7 References: <20120910211207.GC64920@lor.one-eyed-alien.net> <20120911104518.GF37286@deviant.kiev.zoral.com.ua> <20120911120649.GA52235@freebsd.org> <20120911132410.GA87126@troutmask.apl.washington.edu> <504F4645.4070900@FreeBSD.org> <504F4A6B.4010001@coosemans.org> <504F5101.8090906@FreeBSD.org> User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:12.0) Gecko/20120502 Thunderbird/12.0 Cc: toolchain@FreeBSD.org, Tijl Coosemans , current@FreeBSD.org, Steve Kargl Subject: Re: Clang as default compiler November 4th X-BeenThere: freebsd-toolchain@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Maintenance of FreeBSD's integrated toolchain List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Sep 2012 22:42:35 -0000 On 09/11/12 09:56, Dimitry Andric wrote: > On 2012-09-11 16:27, Tijl Coosemans wrote:> On 11-09-2012 16:10, > Dimitry Andric wrote: > ... >>> Yes, maths support, specifically precision, is admittedly still one of >>> clang's (really llvm's) weaker points. It is currently not really a >>> high priority item for upstream. >>> >>> This is obviously something that a certain part of our userbase will >>> care a lot about, while most of the time they won't care so much about >>> licensing or politics. So those people are probably better off using >>> gcc for the time being. >> >> Does it affect the accuracy of libm functions? > > It seems to, at least in specific cases; Steve posted about this in an > earlier thread on -current: > > http://docs.freebsd.org/cgi/mid.cgi?20120905221310.GA97847 > _______________________________________________ If true, this is a serious problem, especially for those of us who use FreeBSD in a scientific computing environment. -Nathan