From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 22168 invoked by alias); 25 Feb 2010 15:23:56 -0000 Received: (qmail 21996 invoked by uid 48); 25 Feb 2010 15:23:45 -0000 Date: Thu, 25 Feb 2010 15:23:00 -0000 Message-ID: <20100225152345.21995.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug middle-end/40979] induct benchmark 60% slower when compiled with -fgraphite-identity In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "dominiq at lps dot ens dot fr" 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: 2010-02/txt/msg02576.txt.bz2 ------- Comment #4 from dominiq at lps dot ens dot fr 2010-02-25 15:23 ------- At revision 156693 or higher, the miscompilation with -floop-interchange reported in comment #3 is gone. As a consequence the corresponding execution time is now the same as when compiled with -fgraphite-identity. The timings wit/without the options correspond to a missed vectorization of the critical loops. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40979