From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 27233 invoked by alias); 25 Apr 2012 13:22:29 -0000 Received: (qmail 27216 invoked by uid 22791); 25 Apr 2012 13:22:27 -0000 X-SWARE-Spam-Status: No, hits=-3.7 required=5.0 tests=AWL,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-lb0-f175.google.com (HELO mail-lb0-f175.google.com) (209.85.217.175) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 25 Apr 2012 13:22:14 +0000 Received: by lbjn8 with SMTP id n8so74531lbj.20 for ; Wed, 25 Apr 2012 06:22:13 -0700 (PDT) MIME-Version: 1.0 Received: by 10.112.99.71 with SMTP id eo7mr1311244lbb.84.1335360133214; Wed, 25 Apr 2012 06:22:13 -0700 (PDT) Received: by 10.152.4.164 with HTTP; Wed, 25 Apr 2012 06:22:13 -0700 (PDT) In-Reply-To: References: Date: Wed, 25 Apr 2012 13:22:00 -0000 Message-ID: Subject: Re: [ARM]Extra load store/instructions compared to gcc-3.4 From: Alexey Kravets To: Alexander Monakov Cc: gcc@gcc.gnu.org Content-Type: text/plain; charset=UTF-8 X-IsSubscribed: yes Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-owner@gcc.gnu.org X-SW-Source: 2012-04/txt/msg00817.txt.bz2 Hi, On Wed, Apr 25, 2012 at 05:00:40PM +0400, Alexander Monakov wrote: > Hi, > > This is a case when ivopts pass makes too many induction variables, exceeding > the number of available registers. If you want to debug it, see > ivopts_global_cost_for_size in tree-ssa-loop-ivopts.c and its callers; > perhaps, the issue is that it fails to account for IVs created in inner loops > when processing outer loops. Thank you, I will check it. > > In any case, I recommend to create a bug report in the GCC bugzilla for this > problem. Yep, will do it. > > Hope that helps, > Alexander > -- Alexey Kravets a.kravets@samsung.com local ext. 3964