From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 2381 invoked by alias); 19 Nov 2012 12:47:38 -0000 Received: (qmail 2370 invoked by uid 22791); 19 Nov 2012 12:47:37 -0000 X-SWARE-Spam-Status: No, hits=-5.9 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,KHOP_RCVD_TRUST,KHOP_THREADED,RCVD_IN_DNSWL_LOW,RCVD_IN_HOSTKARMA_YE X-Spam-Check-By: sourceware.org Received: from mail-pa0-f47.google.com (HELO mail-pa0-f47.google.com) (209.85.220.47) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 19 Nov 2012 12:47:31 +0000 Received: by mail-pa0-f47.google.com with SMTP id fa11so3150124pad.20 for ; Mon, 19 Nov 2012 04:47:31 -0800 (PST) MIME-Version: 1.0 Received: by 10.66.79.168 with SMTP id k8mr35445100pax.12.1353329251128; Mon, 19 Nov 2012 04:47:31 -0800 (PST) Received: by 10.68.153.196 with HTTP; Mon, 19 Nov 2012 04:47:31 -0800 (PST) In-Reply-To: <50A425E8.9060008@gcc.gnu.org> References: <50A425E8.9060008@gcc.gnu.org> Date: Mon, 19 Nov 2012 12:47:00 -0000 Message-ID: Subject: Re: Problems in pr26180.c with own backend From: =?ISO-8859-1?Q?Andreas_Gei=DFler?= To: Georg-Johann Lay Cc: gcc-help@gcc.gnu.org Content-Type: text/plain; charset=ISO-8859-1 Mailing-List: contact gcc-help-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-help-owner@gcc.gnu.org X-SW-Source: 2012-11/txt/msg00153.txt.bz2 Thanks to your help, i could find the problem. And you're absolutely right, > Who knows if not you? That depends on your backend: Maybe absXX2, maybe > movXXcc, maybe jumping around and movXX and negXX2, ... It was absXX2. > Look at .expand dump and track until where it gets wrong. Presumably a > wrong expander, wrong constraints (missing early clobber), wrong peephole, > whatever. wrong expander. Many thanks again. Andreas