   0  inline_call_r_r <JitCode 'ObjSpace.text_or_none_w'>, R[%r1] -> %r1
   6  -live- %r0, %r1
   9  inline_call_r_r <JitCode 'utf8_encode_utf_16'>, R[%r0, %r1] -> %r0
  16  -live- %r0
  19  ref_return %r0
