--- a/lib/Option/ArgList.cpp	Sun Dec 23 19:23:36 2018 +0900
+++ b/lib/Option/ArgList.cpp	Wed Aug 14 19:46:37 2019 +0900
@@ -1,9 +1,8 @@
 //===- ArgList.cpp - Argument List Management -----------------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
@@ -13,6 +12,7 @@
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/Twine.h"
+#include "llvm/Config/llvm-config.h"
 #include "llvm/Option/Arg.h"
 #include "llvm/Option/ArgList.h"
 #include "llvm/Option/Option.h"
@@ -95,21 +95,6 @@
   return std::vector<std::string>(Values.begin(), Values.end());
 }
 
-void ArgList::AddLastArg(ArgStringList &Output, OptSpecifier Id) const {
-  if (Arg *A = getLastArg(Id)) {
-    A->claim();
-    A->render(*this, Output);
-  }
-}
-
-void ArgList::AddLastArg(ArgStringList &Output, OptSpecifier Id0,
-                         OptSpecifier Id1) const {
-  if (Arg *A = getLastArg(Id0, Id1)) {
-    A->claim();
-    A->render(*this, Output);
-  }
-}
-
 void ArgList::AddAllArgsExcept(ArgStringList &Output,
                                ArrayRef<OptSpecifier> Ids,
                                ArrayRef<OptSpecifier> ExcludeIds) const {