[Bug tree-optimization/54073] New: SciMark Monte Carlo test performance has seriously decreased in recent GCC releases

t.artem at mailcity dot com gcc-bugzilla@gcc.gnu.org
Mon Jul 23 15:25:00 GMT 2012


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54073

             Bug #: 54073
           Summary: SciMark Monte Carlo test performance has seriously
                    decreased in recent GCC releases
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: t.artem@mailcity.com


Created attachment 27860
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27860
Sci Mark Monte Carlo test

On an Intel Core i7 CPU (see the attached screenshot):

GCC 4.2.x - 380
GCC 4.7.x - 265

i.e. 44% slower.

SciMark 2.0 sources can be fetched here:
http://math.nist.gov/scimark2/download_c.html



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