From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 30770 invoked by alias); 14 Dec 2004 15:38:18 -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 30311 invoked from network); 14 Dec 2004 15:37:48 -0000 Received: from unknown (HELO alwazn.tat.physik.uni-tuebingen.de) (134.2.170.157) by sourceware.org with SMTP; 14 Dec 2004 15:37:48 -0000 Received: by alwazn.tat.physik.uni-tuebingen.de (Postfix, from userid 30023) id 6B59A3FA1; Tue, 14 Dec 2004 16:37:48 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by alwazn.tat.physik.uni-tuebingen.de (Postfix) with ESMTP id 65B8D76988 for ; Tue, 14 Dec 2004 16:37:48 +0100 (CET) Date: Tue, 14 Dec 2004 15:38:00 -0000 From: Richard Guenther To: gcc@gcc.gnu.org Subject: Re: [scev] Re: Strange IV choices? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-SW-Source: 2004-12/txt/msg00511.txt.bz2 On Tue, 14 Dec 2004, Richard Guenther wrote: > On Tue, 14 Dec 2004, Steven Bosscher wrote: > > > On Dec 14, 2004 04:02 PM, Richard Guenther wrote: > > > No, but does this help the scev analyzer with currently > > > unknown evolution? > > It seems to depend on the level of "indirection" in the C++ class > hierarchy, if I short-cut one level, it works again. Are there > any complexity limits in the scev analyzer? How would they depend > on the amount of "local" variables? > > I'm slightly confused. Maybe someone can have a look at the ivopts dump. "Testcase" (sorry, big) at http://www.tat.physik.uni-tuebingen.de/~rguenth/gcc/perf.iu.ii.gz Richard. -- Richard Guenther WWW: http://www.tat.physik.uni-tuebingen.de/~rguenth/