[Bug c/38755] New: [graphite] wrong code with -O3 -fgraphite-identity -floop-block on polyhedron benchmarks

["howarth at nitro dot med dot uc dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

The capacita and test_fpu benchmarks fail under current gcc trunk (r143160)
when compiled with -ffast-math -funroll-loops -msse3 -O3 -fgraphite-identity
-floop-block. The capacita benchmark produces results with NaN as occurred
before r143159. The test_fpu benchmark segfaults with -floop-block.


-- 
           Summary: [graphite] wrong code with -O3 -fgraphite-identity -
                    floop-block on polyhedron benchmarks
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: howarth at nitro dot med dot uc dot edu
 GCC build triplet: i686-apple-darwin9
  GCC host triplet: i686-apple-darwin9
GCC target triplet: i686-apple-darwin9


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38755