From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8162 invoked by alias); 17 Dec 2001 18:30:43 -0000 Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-owner@gcc.gnu.org Received: (qmail 8104 invoked from network); 17 Dec 2001 18:30:39 -0000 Received: from unknown (HELO igw3.watson.ibm.com) (198.81.209.18) by sources.redhat.com with SMTP; 17 Dec 2001 18:30:39 -0000 Received: from sp1n293en1.watson.ibm.com (sp1n293en1.watson.ibm.com [9.2.112.57]) by igw3.watson.ibm.com (8.11.4/8.11.4) with ESMTP id fBHIU5n34166; Mon, 17 Dec 2001 13:30:05 -0500 Received: from makai.watson.ibm.com (makai.watson.ibm.com [9.2.216.144]) by sp1n293en1.watson.ibm.com (8.11.4/8.11.4) with ESMTP id fBHIU5n20206; Mon, 17 Dec 2001 13:30:06 -0500 Received: from watson.ibm.com (localhost [127.0.0.1]) by makai.watson.ibm.com (AIX4.3/8.9.3/8.9.3/01-10-2000) with ESMTP id NAA22910; Mon, 17 Dec 2001 13:30:05 -0500 Message-Id: <200112171830.NAA22910@makai.watson.ibm.com> To: degger@fhm.edu cc: gcc@gcc.gnu.org Subject: Re: rs6000: Trivial code generation stupidity In-Reply-To: Message from degger@fhm.edu of "Mon, 17 Dec 2001 17:56:51 +0100." <20011217180335.C5CFB6C61@Nicole.fhm.edu> Date: Mon, 17 Dec 2001 10:31:00 -0000 From: David Edelsohn X-SW-Source: 2001-12/txt/msg00909.txt.bz2 >>>>> degger writes: degger> I just noticed that the current cvs gcc generates stupid degger> code for dead simple cases. degger> The same happens for floatingpoint code. If there's more then 1 degger> parameter then I will always get a register move which is degger> really unnecessary. gcc 2.95.3 gets it right. Any ideas? Yes, GCC has degraded to introducing unnecessary, intermediate register moves that it previously avoided. David