   0  inline_call_r_r <JitCode 'allocate_instance__W_IOBase'>, R[%r0] -> %r0
   6  -live- %r0
   6  inline_call_ir_v <JitCode 'W_IOBase.__init__'>, I[$True], R[%r0]
  13  -live- %r0
  13  ref_return %r0
