   0  inline_call_r_r <JitCode 'getarg_w__s_'>, R[$<* struct rpy_string>, %r1] -> %r1
   7  -live- %r0, %r1
  10  inline_call_r_r <JitCode '_unpack'>, R[%r0, %r1] -> %r0
  17  -live- %r0
  20  ref_return %r0
