From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8257 invoked by alias); 3 Apr 2002 00:26:53 -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 8234 invoked by uid 61); 3 Apr 2002 00:26:52 -0000 Date: Tue, 02 Apr 2002 16:26:00 -0000 Message-ID: <20020403002652.8233.qmail@sources.redhat.com> To: 105309-quiet@bugs.debian.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, herbert@gondor.apana.org.au, nobody@gcc.gnu.org From: rth@gcc.gnu.org Reply-To: rth@gcc.gnu.org, 105309-quiet@bugs.debian.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org, herbert@gondor.apana.org.au, nobody@gcc.gnu.org, gcc-gnats@gcc.gnu.org Subject: Re: optimization/3995: i386 optimisation: joining tests X-SW-Source: 2002-04/txt/msg00138.txt.bz2 List-Id: Synopsis: i386 optimisation: joining tests State-Changed-From-To: open->analyzed State-Changed-By: rth State-Changed-When: Tue Apr 2 16:26:51 2002 State-Changed-Why: Fold needs to recognize !(x & sign) as x >= 0. At which point the regular simplifications take care of it. As for leave+ret, may be handled by Jan's block duplication code on cfg-branch. At present we only issue multiple returns without a stack frame. http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=3995