   0  -live- %r0
   0  guard_class %r0 -> %i0
   3  getfield_raw_i %i0, FieldDescr<pypy.interpreter.baseobjspace.W_Root_vtable.cls_typedef> -> %i0
   8  getfield_raw_r %i0, FieldDescr<pbc.pbcinternal_memofield_getorbuild_0> -> %r0
  13  ref_return %r0
