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