   0  getfield_gc_r %r0, FieldDescr<pypy.objspace.std.listobject.W_ListObject.inst_strategy> -> %r2
   5  -live- %r0, %r1, %r2
   8  guard_class %r2 -> %i0
  11  getfield_raw_i %i0, FieldDescr<pypy.objspace.std.listobject.ListStrategy_vtable.cls_extend> -> %i0
  16  inline_call_ir_v <JitCode 'dispatcher_extend'>, I[%i0], R[%r2, %r0, %r1]
  25  -live-
  28  void_return
