   0  getfield_gc_r %r0, FieldDescr<pypy.objspace.std.dictproxyobject.W_DictProxyObject.inst_w_mapping> -> %r0
   5  -live- %r0
   8  guard_class %r0 -> %i0
  11  getfield_raw_i %i0, FieldDescr<pypy.interpreter.baseobjspace.W_Root_vtable.cls_shortcut___iter__> -> %i0
  16  -live- %i0, %r0
  19  int_guard_value %i0
  21  residual_call_r_r %i0, <IndirectCallTargets>, R[%r0], <CallDescr(r) EF=7> -> %r0
  28  -live- %r0
  31  ref_return %r0
