--- old/src/share/vm/opto/regalloc.hpp	2010-11-16 18:17:47.000000000 +0100
+++ new/src/share/vm/opto/regalloc.hpp	2010-11-16 18:17:47.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -22,6 +22,14 @@
  *
  */
 
+#ifndef SHARE_VM_OPTO_REGALLOC_HPP
+#define SHARE_VM_OPTO_REGALLOC_HPP
+
+#include "code/vmreg.hpp"
+#include "opto/block.hpp"
+#include "opto/matcher.hpp"
+#include "opto/phase.hpp"
+
 class Node;
 class Matcher;
 class PhaseCFG;
@@ -131,3 +139,5 @@
   static void print_statistics();
 #endif
 };
+
+#endif // SHARE_VM_OPTO_REGALLOC_HPP