   0  -live- %r1
   3  goto_if_not_ptr_nonzero %r1, L1
   7  ref_copy %r1 -> %r0
  10  -live- %r0, %r1
  13  guard_class %r1 -> %i0
  16  -live- %i0, %r0
  19  goto_if_not_int_eq %i0, $<* struct object_vtable>, L2
  24  inline_call_r_r <JitCode 'W_Dtype.descr_get_subdtype'>, R[%r0] -> %r0
  30  -live- %r0
  33  ref_return %r0
  35  ---
  35  L2:
  35  L3:
  35  raise $<* struct object>
  37  ---
  37  L1:
  37  goto L3
