[Bug c++/13712] New: Executable runs 25% slower than when compiled with INTEL compiler

["william dot crocker at analog dot com" <gcc-bugzilla at gcc dot gnu dot org>]

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