   0  inline_call_r_r <JitCode 'force'>, R[%r0] -> %r0
   6  -live- %r0
   6  inline_call_r_r <JitCode 'call_method_opt__star_0'>, R[%r0, $<* struct rpy_string>] -> %r0
  13  -live- %r0
  13  ref_return %r0
