From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 3114 invoked by alias); 27 Jul 2005 09:04:51 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 3021 invoked by alias); 27 Jul 2005 09:04:47 -0000 Date: Wed, 27 Jul 2005 09:36:00 -0000 Message-ID: <20050727090447.3019.qmail@sourceware.org> From: "sebastian dot pop at cri dot ensmp dot fr" To: gcc-bugs@gcc.gnu.org In-Reply-To: <20050629203622.22236.pinskia@gcc.gnu.org> References: <20050629203622.22236.pinskia@gcc.gnu.org> Reply-To: gcc-bugzilla@gcc.gnu.org Subject: [Bug tree-optimization/22236] [4.1 Regression] wrong code for casts and scev X-Bugzilla-Reason: CC X-SW-Source: 2005-07/txt/msg03507.txt.bz2 List-Id: ------- Additional Comments From sebastian dot pop at cri dot ensmp dot fr 2005-07-27 09:04 ------- Subject: Re: [4.1 Regression] wrong code for casts and scev dberlin at dberlin dot org wrote: > > I don't think it is possible to properly convert these ivs without > > knowing an approximation of the number of iterations. > > I disagree. > Okay, we could (and should) use other informations than the number of iterations for proving non-wrappingness ;-) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22236