   0  -live- %r0, %r1
   0  guard_class %r0 -> %i0
   3  getfield_raw_i %i0, FieldDescr<pypy.module.array.interp_array.W_ArrayBase_vtable.cls_extend> -> %i0
   8  residual_call_ir_v %i0, I[$False], R[%r0, %r1], <CallDescr(rri) EF=7>
  17  -live-
  17  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
