--- a/include/llvm/Support/CodeGen.h	Sun Dec 23 19:23:36 2018 +0900
+++ b/include/llvm/Support/CodeGen.h	Wed Aug 14 19:46:37 2019 +0900
@@ -1,9 +1,8 @@
 //===-- llvm/Support/CodeGen.h - CodeGen Concepts ---------------*- 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
 //
 //===----------------------------------------------------------------------===//
 //
@@ -19,13 +18,14 @@
 
   // Relocation model types.
   namespace Reloc {
-  enum Model { Static, PIC_, DynamicNoPIC, ROPI, RWPI, ROPI_RWPI };
+    // Cannot be named PIC due to collision with -DPIC
+    enum Model { Static, PIC_, DynamicNoPIC, ROPI, RWPI, ROPI_RWPI };
   }
 
   // Code model types.
   namespace CodeModel {
     // Sync changes with CodeGenCWrappers.h.
-  enum Model { Small, Kernel, Medium, Large };
+    enum Model { Tiny, Small, Kernel, Medium, Large };
   }
 
   namespace PICLevel {
@@ -50,13 +50,18 @@
   // Code generation optimization level.
   namespace CodeGenOpt {
     enum Level {
-      None,        // -O0
-      Less,        // -O1
-      Default,     // -O2, -Os
-      Aggressive   // -O3
+      None = 0,      // -O0
+      Less = 1,      // -O1
+      Default = 2,   // -O2, -Os
+      Aggressive = 3 // -O3
     };
   }
 
+  // Specify effect of frame pointer elimination optimization.
+  namespace FramePointer {
+    enum FP {All, NonLeaf, None};
+  }
+
 }  // end llvm namespace
 
 #endif