Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 16 Jan 2002 10:26:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 16 Jan 2002 10:26:04 -0500 Received: from pc-62-31-92-140-az.blueyonder.co.uk ([62.31.92.140]:63706 "EHLO kushida.apsleyroad.org") by vger.kernel.org with ESMTP id ; Wed, 16 Jan 2002 10:25:50 -0500 Date: Wed, 16 Jan 2002 15:18:52 +0000 From: Jamie Lokier To: Alan Cox Cc: Richard Henderson , Ronald Wahl , linux-kernel@vger.kernel.org Subject: Re: [Q] Looking for an emulation for CMOV* instructions. Message-ID: <20020116151852.B31993@kushida.apsleyroad.org> In-Reply-To: <20020111141850.A9873@twiddle.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from alan@lxorguk.ukuu.org.uk on Fri, Jan 11, 2002 at 11:07:21PM +0000 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Alan Cox wrote: > > What's the point of optimizing an IF to a cmov if I have > > to insert another IF to see if I can use cmov? > > I've always wondered. Intel made the instruction optional yet there isnt > an obvious way to do runtime fixups on it Yes there is -- emulation! :-) -- Jamie - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/