From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 15635 invoked by alias); 5 May 2002 22:02:04 -0000 Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-prs-owner@gcc.gnu.org Received: (qmail 15613 invoked by uid 61); 5 May 2002 22:02:03 -0000 Date: Sun, 05 May 2002 15:02:00 -0000 Message-ID: <20020505220203.15612.qmail@sources.redhat.com> To: Sylvain.Pion@sophia.inria.fr, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org From: hubicka@gcc.gnu.org Reply-To: hubicka@gcc.gnu.org, Sylvain.Pion@sophia.inria.fr, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, nobody@gcc.gnu.org, gcc-gnats@gcc.gnu.org Subject: Re: optimization/6562: useless subl/addl $12, %esp in small functions involving sse2 X-SW-Source: 2002-05/txt/msg00131.txt.bz2 List-Id: Synopsis: useless subl/addl $12, %esp in small functions involving sse2 State-Changed-From-To: open->closed State-Changed-By: hubicka State-Changed-When: Sun May 5 15:02:02 2002 State-Changed-Why: The add/sum is mandatory - stack needs to be allocated in order to move value from i387 to SSE register. Sadly i386 ABI requires values to be returned there. With -mfpmath=sse,i387 the move should not happen and the result should be computed in i387 directly. http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6562