From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14963 invoked by alias); 14 Jul 2004 07:16:19 -0000 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 Received: (qmail 14955 invoked from network); 14 Jul 2004 07:16:16 -0000 Received: from unknown (HELO mx1.redhat.com) (66.187.233.31) by sourceware.org with SMTP; 14 Jul 2004 07:16:16 -0000 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.12.10/8.12.10) with ESMTP id i6E7GFe1009992; Wed, 14 Jul 2004 03:16:15 -0400 Received: from localhost (mail@vpnuser2.surrey.redhat.com [172.16.9.2]) by int-mx1.corp.redhat.com (8.11.6/8.11.6) with ESMTP id i6E7GE026468; Wed, 14 Jul 2004 03:16:14 -0400 Received: from rsandifo by localhost with local (Exim 3.35 #1) id 1Bkdzx-0000sn-00; Wed, 14 Jul 2004 08:16:13 +0100 To: Alexandre Oliva Cc: Kazu Hirata , gcc-patches@gcc.gnu.org Subject: Re: add h8sx support to h8300 References: <20040621.102356.74724063.kazu@cs.umass.edu> <87fz83f456.fsf@redhat.com> <87zn6aevpa.fsf@redhat.com> <873c42e8rb.fsf@redhat.com> <87r7rh8hx8.fsf@redhat.com> From: Richard Sandiford Date: Wed, 14 Jul 2004 17:16:00 -0000 In-Reply-To: (Alexandre Oliva's message of "14 Jul 2004 00:46:31 -0300") Message-ID: <874qobvz2a.fsf@redhat.com> User-Agent: Gnus/5.1006 (Gnus v5.10.6) Emacs/21.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-SW-Source: 2004-07/txt/msg01450.txt.bz2 Alexandre Oliva writes: >> ! if (!regs_ever_live[HFP_REG]) >> ! return NO_REGS; > > I had both HFP_REG and FP_REG at some point. I thought this would > minimize the risk of running into the failure case. Don't you think > so? I wouldn't have thought checking for FP_REG was necessary. It really is the liveness of er6 that we're concerned about. Perhaps DESTINATION_REG would be more self-documenting than HFP_REG... Richard