From owner-freebsd-current@FreeBSD.ORG Sat Jun 26 19:31:07 2004 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 C651416A4CE for ; Sat, 26 Jun 2004 19:31:07 +0000 (GMT) Received: from papagena.rockefeller.edu (papagena.rockefeller.edu [129.85.41.71]) by mx1.FreeBSD.org (Postfix) with ESMTP id 78AA743D31 for ; Sat, 26 Jun 2004 19:30:57 +0000 (GMT) (envelope-from rsidd@papagena.rockefeller.edu) Received: from papagena.rockefeller.edu (localhost.localdomain [127.0.0.1]) i5QJTbuv024847; Sat, 26 Jun 2004 15:29:57 -0400 Received: (from rsidd@localhost) by papagena.rockefeller.edu (8.12.8/8.12.8/Submit) id i5QJTatQ024845; Sat, 26 Jun 2004 15:29:36 -0400 Date: Sat, 26 Jun 2004 15:29:36 -0400 From: Rahul Siddharthan To: Alex Keahan Message-ID: <20040626192936.GA24837@online.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200406261906.32590.alex@hightemplar.com> User-Agent: Mutt/1.4.1i X-Operating-System: Linux 2.4.20-20.9smp i686 cc: current@freebsd.org Subject: Re: HEADSUP: ibcs2 and svr4 compat headed for history 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: Sat, 26 Jun 2004 19:31:07 -0000 Alex Keahan wrote: > You can use Sun's compilers for Intel to generate x86 assembly code and > (with a little bit of tweaking) assemble it with gas to create a native > FreeBSD binary. Last time I did that (ca. 2000), I measured a 20-30% > improvement in run-time execution speed. I get that improvement using gcc3 over gcc2 on intel. In fact, gcc these days, on my code, is a bit faster than Intel's compiler. Even on Solaris/sparc, I know many people who prefer gcc to Sun's compilers (perhaps not for speed reasons, but people who want numbercrunching speed don't use sparc any more anyway...) Rahul