   0  inline_call_ir_r <JitCode 'interp_w__W_GenericBox'>, I[$False], R[%r0] -> %r0
   8  -live- %r0
   8  inline_call_r_r <JitCode 'W_GenericBox.item'>, R[%r0] -> %r0
  14  -live- %r0
  14  ref_return %r0
