From owner-freebsd-hackers@FreeBSD.ORG Sun May 30 15:41:55 2010 Return-Path: <owner-freebsd-hackers@FreeBSD.ORG> Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C4C351065672 for <freebsd-hackers@freebsd.org>; Sun, 30 May 2010 15:41:55 +0000 (UTC) (envelope-from erik@cederstrand.dk) Received: from csmtp2.one.com (csmtp2.one.com [91.198.169.22]) by mx1.freebsd.org (Postfix) with ESMTP id 5E5758FC1E for <freebsd-hackers@freebsd.org>; Sun, 30 May 2010 15:41:55 +0000 (UTC) Received: from macfeast.lan (0x573b9942.cpe.ge-1-2-0-1101.ronqu1.customer.tele.dk [87.59.153.66]) by csmtp2.one.com (Postfix) with ESMTP id C5A661B01821F; Sun, 30 May 2010 15:41:53 +0000 (UTC) Mime-Version: 1.0 (Apple Message framework v1078) Content-Type: multipart/signed; boundary=Apple-Mail-163-574170180; protocol="application/pkcs7-signature"; micalg=sha1 From: Erik Cederstrand <erik@cederstrand.dk> In-Reply-To: <4C0272E9.8020800@pathscale.com> Date: Sun, 30 May 2010 17:41:53 +0200 Message-Id: <3A66374B-B6EE-4286-9575-BDA6261A0AFA@cederstrand.dk> References: <op.vb0w1zrh43o42p@klevas> <4BDD28E2.8010201@rawbw.com> <httjse$4ee$1@dough.gmane.org> <op.vdirbroh43o42p@klevas> <45C1FA95-C9A3-41EA-9E3A-61E35C7F6AD1@cederstrand.dk> <4C0272E9.8020800@pathscale.com> To: freebsd-hackers@freebsd.org X-Mailer: Apple Mail (2.1078) X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: "=?iso-8859-1?Q?=22C._Bergstr=F6m=22?=" <cbergstrom@pathscale.com> Subject: Re: Permissive licensed toolchain X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD <freebsd-hackers.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, <mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers> List-Post: <mailto:freebsd-hackers@freebsd.org> List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, <mailto:freebsd-hackers-request@freebsd.org?subject=subscribe> X-List-Received-Date: Sun, 30 May 2010 15:41:56 -0000 --Apple-Mail-163-574170180 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=iso-8859-1 Den 30/05/2010 kl. 16.15 skrev C. Bergstr=F6m: > What's the real status of a fully permissive licensed toolchain? You mean ClangBSD? > 1) Benchmarks - (I mean emperical evidence on FBSD and per target with = no anecdotal comments or speculation.. I admit benchmarks can actually = be misleading since many companies optimize for them specifically) I'm working (slowly) on comparing FreeBSD and ClangBSD for various = benchmarks. > 3) Which assembler is being used? The same as FreeBSD: GNU as. There is ongoing work in the llvm-mc = project to provide an assembler for LLVM, but ELF support is low = priority for Apple. There was an experimental patch on the mailing list = a couple of weeks back. > 4) Which linker is being used? GNU ld. LLVM also provides a linker, but last time I checked it wasn't = functional on FreeBSD. It provides LTO that would be interesting to = benchmark. > What's the best way to make a plan which will get feedback if someone = wanted to try alternative approach to the above? Make it easily available, e.g. as a Subversion repo like ClangBSD, or an = install CD, and provide instructions for easy installation and test. I'm = testing ClangBSD in a VirtualBox VM which makes it easy to recover after = hosing the operating system. Erik= --Apple-Mail-163-574170180--