From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 27643 invoked by alias); 23 Jul 2012 15:44:06 -0000 Received: (qmail 27634 invoked by uid 22791); 23 Jul 2012 15:44:05 -0000 X-SWARE-Spam-Status: No, hits=-4.3 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,KHOP_THREADED X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 23 Jul 2012 15:43:52 +0000 From: "t.artem at mailcity dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/54073] SciMark Monte Carlo test performance has seriously decreased in recent GCC releases Date: Mon, 23 Jul 2012 15:44:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: t.artem at mailcity dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 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: 2012-07/txt/msg01799.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D54073 --- Comment #1 from Artem S. Tashkinov 2012-0= 7-23 15:43:50 UTC --- The results are obtained from here: http://openbenchmarking.org/result/1207077-SU-GCCPERFOR59 Benchmarking of GCC 4.2 through GCC 4.8 when building the compiler the same= and setting CFLAGS/CXXFLAGS of -O3 and -march=3Dnative prior to test installati= on and execution. Benchmarking for a future article on Phoronix.com by Michael Larabel. Testing on an Intel Core i7 and AMD Opteron 2384 when using the 64= -bit (x86_64 target) build of Ubuntu Linux. The CPU is: Nehalem microarchitecture, "Clarksfield" (45 nm), Intel=C2=AE Core=E2=84=A2= i7-720QM Processor (6M Cache, 1.60 GHz) http://ark.intel.com/products/43122/Intel-Core-i7-720QM-Processor-%286M-Cac= he-1_60-GHz%29