   0  inline_call_r_i <JitCode 'c_int_w'>, R[%r0] -> %i0
   6  -live- %i0
   9  int_signext %i0, $4 -> %i0
  13  residual_call_ir_v $<* fn exit>, I[%i0], R[], <CallDescr(i) EF=2>
  20  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
