From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21004 invoked by alias); 19 Mar 2012 17:29:41 -0000 Received: (qmail 20984 invoked by uid 22791); 19 Mar 2012 17:29:39 -0000 X-SWARE-Spam-Status: No, hits=-1.9 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from qmta07.westchester.pa.mail.comcast.net (HELO qmta07.westchester.pa.mail.comcast.net) (76.96.62.64) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 19 Mar 2012 17:29:06 +0000 Received: from omta22.westchester.pa.mail.comcast.net ([76.96.62.73]) by qmta07.westchester.pa.mail.comcast.net with comcast id nVNp1i0081ap0As57VV7UL; Mon, 19 Mar 2012 17:29:07 +0000 Received: from up.mrs.kithrup.com ([24.4.193.8]) by omta22.westchester.pa.mail.comcast.net with comcast id nVV51i01P0BKwT43iVV6LB; Mon, 19 Mar 2012 17:29:07 +0000 Subject: Re: [Patch,AVR]: Hack around PR rtl-optimization/52543 Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: text/plain; charset=us-ascii From: Mike Stump In-Reply-To: <4F5A4FFE.9000203@gjlay.de> Date: Mon, 19 Mar 2012 17:29:00 -0000 Cc: gcc-patches@gcc.gnu.org, Denis Chertykov , Eric Weddington Content-Transfer-Encoding: quoted-printable Message-Id: <851677C3-FBA6-4A2B-AC88-193A1E84A5D6@comcast.net> References: <4F5A4FFE.9000203@gjlay.de> To: Georg-Johann Lay X-IsSubscribed: yes Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org X-SW-Source: 2012-03/txt/msg01297.txt.bz2 On Mar 9, 2012, at 10:46 AM, Georg-Johann Lay wrote: > The problem with the PR is that lower-subreg.c happily splits multi-byte = moves > from address spaces without knowing anything about the additional costs t= his is > causing. Nasty, arm hit this sort of problem recently as well, and I've hit this sor= t of problem; here's to wishing the underlying problem gets fixed soon.