From owner-freebsd-ia32@FreeBSD.ORG Fri Nov 3 21:59:51 2006 Return-Path: X-Original-To: freebsd-ia32@freebsd.org Delivered-To: freebsd-ia32@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2CC3B16A407 for ; Fri, 3 Nov 2006 21:59:50 +0000 (UTC) (envelope-from ranjith_kumar_b4u@yahoo.com) Received: from web58411.mail.re3.yahoo.com (web58411.mail.re3.yahoo.com [68.142.236.179]) by mx1.FreeBSD.org (Postfix) with SMTP id 81BBF43D46 for ; Fri, 3 Nov 2006 21:59:47 +0000 (GMT) (envelope-from ranjith_kumar_b4u@yahoo.com) Received: (qmail 88507 invoked by uid 60001); 3 Nov 2006 21:59:46 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:Received:Date:From:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=vD05xJ0LnUtIaOrgFbQuxFKVvNG6NLOeTIv+zufLO3jy/9NiJMX7bwZYoCclqUDgybr1zVYVUb2dcKx6MaJuFj079agyrT0UPYf7foWwS1SDxPGv7suhD07MbZEMvteK4HMWUc81CN8Z5W6blac0F4e1VUapX6SozfcUWMRtYWA= ; Message-ID: <20061103215946.88505.qmail@web58411.mail.re3.yahoo.com> Received: from [202.68.145.230] by web58411.mail.re3.yahoo.com via HTTP; Fri, 03 Nov 2006 13:59:46 PST Date: Fri, 3 Nov 2006 13:59:46 -0800 (PST) From: ranjith kumar To: freebsd-ia32@freebsd.org In-Reply-To: <3bbf2fe10610181116w64407a43j83e1acfa16c6c9d5@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Subject: issue group for pentium4 X-BeenThere: freebsd-ia32@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD on the IA-32 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Nov 2006 21:59:51 -0000 Hi 1) "Issue group" is a set of instructions which can be issued to different execution units at same time so that many execution units can be executed parallely. Can any one tell any sourse where I can get the information such as which set of instructions are called as an issue group(in case of pentium 4 processor only). 2) Compilers exploit such a feature by reodering instructions. But Pentium 4 processor reoders instructions to do the same thing. So reordering by compilers is unnessecary. Am I right???????????? 3)How many instructions does Pentium 4 processor can look insatantly to reorder instructions? ____________________________________________________________________________________ Get your email and see which of your friends are online - Right on the New Yahoo.com (http://www.yahoo.com/preview)