message: Emit scf.for statement for For op
diff: @@ -173,6 +173,7 @@ class StmtInferrer(gast.NodeVisitor):
  self.closure_types = closure_types
  self.types_in = types_in
  self.new_symbols = {}
  + self.rvalue = None
  def visit(self, node):
  types = super().visit(node)
  