s.insertBack(Unary.create(GET_CLASS_TIB, res, type));
OPT_Instruction s2 = GuardedUnary.create(GET_OBJ_TIB, res, obj, guard); s.insertBack(s2);
  static OPT_RegisterOperand getTIB (OPT_Instruction s, OPT_IR ir, 				     OPT_TypeOperand type) {    OPT_RegisterOperand res =       ir.regpool.makeTemp(OPT_ClassLoaderProxy.JavaLangObjectArrayType);    s.insertBack(Unary.create(GET_CLASS_TIB, res, type));    return  res.copyD2U();  }