From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21728 invoked by alias); 12 May 2003 17:08:50 -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 21610 invoked from network); 12 May 2003 17:08:48 -0000 Received: from unknown (HELO mx1.redhat.com) (66.187.233.31) by sources.redhat.com with SMTP; 12 May 2003 17:08:48 -0000 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.11.6/8.11.6) with ESMTP id h4CH8mH16902 for ; Mon, 12 May 2003 13:08:48 -0400 Received: from speedy.slc.redhat.com (vpn50-22.rdu.redhat.com [172.16.50.22]) by int-mx1.corp.redhat.com (8.11.6/8.11.6) with ESMTP id h4CH8aI32091; Mon, 12 May 2003 13:08:36 -0400 Received: from redhat.com (law@localhost) by speedy.slc.redhat.com (8.12.8/8.12.8/Submit) with ESMTP id h4CH86cS015911; Mon, 12 May 2003 11:08:16 -0600 Message-Id: <200305121708.h4CH86cS015911@speedy.slc.redhat.com> X-Authentication-Warning: speedy.slc.redhat.com: law owned process doing -bs To: Andrew MacLeod cc: Diego Novillo , gcc mailing list Reply-To: law@redhat.com Subject: Re: [tree-ssa] Out of SSA status and issues In-Reply-To: Your message of "12 May 2003 11:57:07 EDT." <1052755028.2743.368.camel@p4> From: law@redhat.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 12 May 2003 17:08:00 -0000 X-SW-Source: 2003-05/txt/msg01174.txt.bz2 In message <1052755028.2743.368.camel@p4>, Andrew MacLeod writes: >On another note, shouldn't the into-ssa-pass's copy propagation only be >turned on when -ftree-copyprop is specified? I think we do it all the >time right now... thus my problem in libstdc++ even without >-ftree-copyprop... Probably... FWIW, I dug up my changes to identify the problem variables (those occurring in abnormal PHIs) and cobbled together the two lines of code necessary to use that information to avoid copy propagating those variables during SSA renaming. Interested in playing with it to see if it resolves your problems? jeff