--- a/lib/Target/X86/X86TargetMachine.h	Sun Dec 23 19:23:36 2018 +0900
+++ b/lib/Target/X86/X86TargetMachine.h	Wed Aug 14 19:46:37 2019 +0900
@@ -1,9 +1,8 @@
 //===-- X86TargetMachine.h - Define TargetMachine for the X86 ---*- C++ -*-===//
 //
-//                     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
 //
 //===----------------------------------------------------------------------===//
 //
@@ -53,10 +52,6 @@
   TargetLoweringObjectFile *getObjFileLowering() const override {
     return TLOF.get();
   }
-
-  bool isMachineVerifierClean() const override {
-    return false;
-  }
 };
 
 } // end namespace llvm