From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1918 invoked by alias); 7 Jan 2010 15:17:00 -0000 Received: (qmail 1846 invoked by uid 48); 7 Jan 2010 15:16:46 -0000 Date: Thu, 07 Jan 2010 15:17:00 -0000 Message-ID: <20100107151646.1845.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug tree-optimization/42376] [4.5 Regression] Performance regression of generated code In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "martin at mpa-garching dot mpg dot de" 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: 2010-01/txt/msg00794.txt.bz2 ------- Comment #7 from martin at mpa-garching dot mpg dot de 2010-01-07 15:16 ------- Created an attachment (id=19499) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19499&action=view) Proposed wwwdocs patch to explain the apparent performance regression Here is a proposed patch to gcc-4.5/changes.html, which mentions the apparent performance regression (and describes how to avoid it) in the "Caveats" section. The FSF should have my copyright assignment; in any case I think this patch is trivial enough. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42376