def reduce_int
      reduce = Risc.slot_to_reg( "int -> fix" , self , Parfait::Integer.integer_index , self)
      builder.add_code(reduce) if builder
      reduce
    end
def reduce_int
      reduce = Risc.slot_to_reg( "int -> fix" , self , Parfait::Integer.integer_index , self)
      builder.add_code(reduce) if builder
      reduce
    end
reduce integer to fixnum and add instruction if builder is used