From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 9638 invoked by alias); 14 Jan 2009 21:16:48 -0000 Received: (qmail 9361 invoked by uid 48); 14 Jan 2009 21:16:37 -0000 Date: Wed, 14 Jan 2009 21:16:00 -0000 Message-ID: <20090114211637.9360.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug middle-end/38846] [Graphite] 70% slower using -floop* than without graphite (gas_dyn of Polyhedron) In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "burnus 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: 2009-01/txt/msg01540.txt.bz2 ------- Comment #3 from burnus at gcc dot gnu dot org 2009-01-14 21:16 ------- > Thanks for this report. Please also test with the code of graphite > branch that contains a patch that schedules several scalar optimizations > that can improve the quality of the code generated. For the geometric mean I see a 1% improvement over trunk+graphite. gas_dyn is now 18.70s. However, capacita is slower on the branch (only 4% instead of 6% faster than the trunk w/o graphite); channel is 2% slower on the branch than trunk's graphite. Except of these two, the branch is faster. (Though the load of other programs might be also a bit less than for the trunk run [w/ and w/o -floop*].) Thanks for your Graphite work! -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38846