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[Bug tree-optimization/21563] New: A trivial VRP opportunity missed


Consider:

int
foo (int a)
{
  if (a > 1)
    if (a == 0)
      return 1;
  return 0;
}

The second "if" statement is not folded.

-- 
           Summary: A trivial VRP opportunity missed
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: kazu at cs dot umass dot edu
                CC: dnovillo at redhat dot com,gcc-bugs at gcc dot gnu dot
                    org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21563


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