From owner-freebsd-alpha Wed Mar 19 11:19:40 2003 Delivered-To: freebsd-alpha@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 500BD37B401 for ; Wed, 19 Mar 2003 11:19:39 -0800 (PST) Received: from HAL9000.homeunix.com (12-233-57-224.client.attbi.com [12.233.57.224]) by mx1.FreeBSD.org (Postfix) with ESMTP id B032943F85 for ; Wed, 19 Mar 2003 11:19:38 -0800 (PST) (envelope-from das@FreeBSD.ORG) Received: from HAL9000.homeunix.com (localhost [127.0.0.1]) by HAL9000.homeunix.com (8.12.6/8.12.5) with ESMTP id h2JJJcmR001998 for ; Wed, 19 Mar 2003 11:19:38 -0800 (PST) (envelope-from das@FreeBSD.ORG) Received: (from das@localhost) by HAL9000.homeunix.com (8.12.6/8.12.5/Submit) id h2JJJcZu001997 for alpha@FreeBSD.ORG; Wed, 19 Mar 2003 11:19:38 -0800 (PST) (envelope-from das@FreeBSD.ORG) Date: Wed, 19 Mar 2003 11:19:37 -0800 From: David Schultz To: alpha@FreeBSD.ORG Subject: making -mieee the default Message-ID: <20030319191937.GA1678@HAL9000.homeunix.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org As discussed in the thread "HEADS UP: Don't upgrade your Alphas!", I would like to make the -mieee option to gcc the default, since lots of floating point stuff breaks without it. Alpha hardware doesn't support IEEE FP, so there is a performance penalty associated with this; when a floating point value x *might* be NaN, the compiler inserts explicit logic to generate a trap only if appropriate. (It seems to use cmpt??/su most of the time). I just wanted to check if there were any objections before moving forward. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message