From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 24939 invoked by alias); 16 Jan 2004 21:11:33 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 24931 invoked by uid 48); 16 Jan 2004 21:11:33 -0000 Date: Fri, 16 Jan 2004 21:11:00 -0000 From: "william dot crocker at analog dot com" To: gcc-bugs@gcc.gnu.org Message-ID: <20040116211131.13712.william.crocker@analog.com> Reply-To: gcc-bugzilla@gcc.gnu.org Subject: [Bug c++/13712] New: Executable runs 25% slower than when compiled with INTEL compiler X-Bugzilla-Reason: CC X-SW-Source: 2004-01/txt/msg01928.txt.bz2 List-Id: Keep up the good work BUT When I compile my (very large number crunching) program with the INTEL C++ compiler (icc,v7.0) it runs 20 to 30% faster. On INTEL I use a single compilation pass with no "special" options, just -O3. With GCC(3.3.2) I tried all sorts of options, but could not get any closer. I would really like to continue using GCC, but 25% is hard to pass up. I used no special options when GCC was built and installed. Bill -- Summary: Executable runs 25% slower than when compiled with INTEL compiler Product: gcc Version: 3.3.2 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: william dot crocker at analog dot com CC: gcc-bugs at gcc dot gnu dot org GCC build triplet: ??? GCC host triplet: DELL, Pentium4, Linux RedHat 7.3 GCC target triplet: ??? http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13712