From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1HSItH-0000VA-Oa for qemu-devel@nongnu.org; Fri, 16 Mar 2007 16:19:07 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1HSItG-0000Ux-C8 for qemu-devel@nongnu.org; Fri, 16 Mar 2007 16:19:06 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HSItG-0000Uu-6K for qemu-devel@nongnu.org; Fri, 16 Mar 2007 15:19:06 -0500 Received: from static-71-162-243-5.phlapa.fios.verizon.net ([71.162.243.5] helo=grelber.thyrsus.com) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1HSIs6-0002ds-Kt for qemu-devel@nongnu.org; Fri, 16 Mar 2007 16:17:54 -0400 From: Rob Landley Subject: Re: [Qemu-devel] SSE 'maxps' instruction bug? Date: Fri, 16 Mar 2007 16:17:40 -0400 References: <200703121450.41180.jseward@acm.org> <200703161407.50228.rob@landley.net> <200703161810.35979.jseward@acm.org> In-Reply-To: <200703161810.35979.jseward@acm.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200703161617.40341.rob@landley.net> Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Julian Seward Cc: Tim Olson , qemu-devel@nongnu.org On Friday 16 March 2007 2:10 pm, Julian Seward wrote: > On Friday 16 March 2007 18:07, Rob Landley wrote: > > On Tuesday 13 March 2007 10:21 pm, Julian Seward wrote: > > > > 0.9.0, or that the compiler/host combination used to build the qemu > > > > binary Julian is running generated bad code for the float compares. > > > > > > I used gcc 3.4.6 bootstrapped as normal ('make bootstrap; make install') > > > on a 64-bit machine. If it is qemu generating bad code due to variations > > > in gcc behaviour, that's another argument in favour of scrapping the gcc > > > 3.X based backend and using a self contained, handwritten insn selector > > > and register allocator. > > > > Are you referring to https://nowt.dyndns.org/ or something else? > > I was referring to an idea, of which the nowt thing is an implementation. > I'm not aware of any other such backends to qemu. That's Paul Brook's QOPS thing that gets discussed here from time to time. There are vague plans to switch over to that soonish. Rob -- Vista: Windows Millenium Second Edition