Revision 164367:

miscompiled SPEC CPU 2K at -O3.

On Linux/x86-64, I got

  Running 186.crafty ref peak lnx32e-gcc default
*** Miscompare of crafty.out, see
  Running 200.sixtrack ref peak lnx32e-gcc default
*** Miscompare of inp.out, see

with -O3 -funroll-loops -ffast-math.

On Linux/ia32, I got

  Running ref peak lnx32-gcc default
*** Miscompare of ref.out, see

with -O3 -funroll-loops -msse2 -mfpmath=sse -ffast-math.

           Summary: [4.6 regression] Revision 164367 miscompiled SPEC CPU 2K
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl dot tools at gmail dot com

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