From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8445 invoked by alias); 7 Mar 2004 18:30:26 -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 8427 invoked from network); 7 Mar 2004 18:30:25 -0000 Received: from unknown (HELO mx1.redhat.com) (66.187.233.31) by sources.redhat.com with SMTP; 7 Mar 2004 18:30:25 -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 i27IUKST003874; Sun, 7 Mar 2004 13:30:20 -0500 Received: from pobox.corp.redhat.com (pobox.corp.redhat.com [172.16.52.156]) by int-mx1.corp.redhat.com (8.11.6/8.11.6) with ESMTP id i27IUK800721; Sun, 7 Mar 2004 13:30:20 -0500 Received: from frogsleap.quesejoda.com (sebastian-int.corp.redhat.com [172.16.52.221]) by pobox.corp.redhat.com (8.12.8/8.12.8) with ESMTP id i27IUImH021025; Sun, 7 Mar 2004 13:30:19 -0500 Received: by frogsleap.quesejoda.com (Postfix, from userid 500) id A35213BC11; Sun, 7 Mar 2004 14:30:17 -0400 (AST) To: Dale Johannesen Cc: Dorit Naishlos , gcc@gcc.gnu.org Subject: Re: rs6000.md/altivec.md problem in setting of vector registers References: <790DA3BC-6D42-11D8-8C0E-000A95D7CD40@apple.com> From: Aldy Hernandez Date: Sun, 07 Mar 2004 18:30:00 -0000 In-Reply-To: <790DA3BC-6D42-11D8-8C0E-000A95D7CD40@apple.com> Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-SW-Source: 2004-03/txt/msg00379.txt.bz2 >>>>> "Dale" == Dale Johannesen writes: > This sort of thing generally violates strict aliasing rules, and has a > tendency > not to work as expected when scheduled. Vectors are outside the > standard, > but I don't think there's any special handling for aliasing them, is > there Aldy? No. Aldy