*** old/src/share/vm/interpreter/bytecodes.hpp	Mon Nov 10 08:14:22 2014
--- new/src/share/vm/interpreter/bytecodes.hpp	Mon Nov 10 08:14:22 2014

*** 399,410 ****
--- 399,412 ----
    static bool        is_aload       (Code code)    { return (code == _aload  || code == _aload_0  || code == _aload_1
                                                                               || code == _aload_2  || code == _aload_3); }
    static bool        is_astore      (Code code)    { return (code == _astore || code == _astore_0 || code == _astore_1
                                                                               || code == _astore_2 || code == _astore_3); }
  
+   static bool        is_const       (Code code)    { return (_aconst_null <= code && code <= _ldc2_w); }
    static bool        is_zero_const  (Code code)    { return (code == _aconst_null || code == _iconst_0
                                                             || code == _fconst_0 || code == _dconst_0); }
+   static bool        is_return      (Code code)    { return (_ireturn <= code && code <= _return); }
    static bool        is_invoke      (Code code)    { return (_invokevirtual <= code && code <= _invokedynamic); }
    static bool        has_receiver   (Code code)    { assert(is_invoke(code), "");  return code == _invokevirtual ||
                                                                                            code == _invokespecial ||
                                                                                            code == _invokeinterface; }
    static bool        has_optional_appendix(Code code) { return code == _invokedynamic || code == _invokehandle; }