From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4263 invoked by alias); 21 Feb 2006 23:16:17 -0000 Received: (qmail 4251 invoked by uid 22791); 21 Feb 2006 23:16:15 -0000 X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (66.187.233.31) by sourceware.org (qpsmtpd/0.31) with ESMTP; Tue, 21 Feb 2006 23:16:13 +0000 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.12.11/8.12.11) with ESMTP id k1LNG5W1023923; Tue, 21 Feb 2006 18:16:05 -0500 Received: from potter.sfbay.redhat.com (potter.sfbay.redhat.com [172.16.27.15]) by int-mx1.corp.redhat.com (8.11.6/8.11.6) with ESMTP id k1LNG0116188; Tue, 21 Feb 2006 18:16:00 -0500 Received: from louie.sfbay.redhat.com (louie.sfbay.redhat.com [192.168.28.4]) by potter.sfbay.redhat.com (8.12.8/8.12.8) with ESMTP id k1LNFwjs002742; Tue, 21 Feb 2006 18:15:58 -0500 Received: from louie.sfbay.redhat.com (louie.sfbay.redhat.com [127.0.0.1]) by louie.sfbay.redhat.com (8.13.4/8.13.1) with ESMTP id k1LNFv00018854; Tue, 21 Feb 2006 15:15:57 -0800 Received: (from rth@localhost) by louie.sfbay.redhat.com (8.13.4/8.13.4/Submit) id k1LNFtBe018853; Tue, 21 Feb 2006 15:15:55 -0800 Date: Tue, 21 Feb 2006 23:16:00 -0000 From: Richard Henderson To: Zdenek Dvorak Cc: Roger Sayle , Paolo Bonzini , gcc-patches@gcc.gnu.org Subject: Re: Patch ping Message-ID: <20060221231555.GA18756@redhat.com> Mail-Followup-To: Richard Henderson , Zdenek Dvorak , Roger Sayle , Paolo Bonzini , gcc-patches@gcc.gnu.org References: <20060221091531.GA26781@atrey.karlin.mff.cuni.cz> <20060221154317.GA27569@atrey.karlin.mff.cuni.cz> <20060221180114.GA16778@redhat.com> <20060221230437.GA4783@atrey.karlin.mff.cuni.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060221230437.GA4783@atrey.karlin.mff.cuni.cz> User-Agent: Mutt/1.4.2.1i X-IsSubscribed: yes Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org X-SW-Source: 2006-02/txt/msg01726.txt.bz2 On Wed, Feb 22, 2006 at 12:04:37AM +0100, Zdenek Dvorak wrote: > If w <= HOST_BITS_PER_WIDE_INT, the functions returns just CONST_INT, not > CONST_DOUBLE. In this case, rule (b) -- filling bits above w with s -- > is used. Yep. > Suppose now w > HOST_BITS_PER_WIDE_INT. If i1 == 0 and i0 >=0, or > i1 == -1 and i1 < 0, we return CONST_INT for i0, anyway. Sure. It saves memory. > Otherwise, the components i0 and i1 are put into the constant unchanged. Note that there exists no rtl mode for which w > HBPWI and w < 2*HBPWI. That is, if w > HBPWI, then w == 2*HBPWI. So the point you're trying to make here doesn't actually apply, so rule (b) continues to hold. r~