From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 28145 invoked by alias); 9 Dec 2008 21:53:30 -0000 Received: (qmail 27729 invoked by uid 48); 9 Dec 2008 21:52:08 -0000 Date: Tue, 09 Dec 2008 21:53:00 -0000 Message-ID: <20081209215208.27728.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/38440] auto-increment generation does not work In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "amylaar at gcc dot gnu dot org" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2008-12/txt/msg00921.txt.bz2 ------- Comment #5 from amylaar at gcc dot gnu dot org 2008-12-09 21:52 ------- FWIW, the same problem can be seen for the SH, although it doesn't manifest as an actual preformance regression from 4.2.1 because the 4.2.1 SH backend is suboptimal - the mov.b / extu.b scheduling is bad, that could be fixed with a peephole2, and the doloop_end pattern that can make use of the dt instruction is not available. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38440