--- a/hotspot/src/share/vm/oops/oop.hpp	Tue Feb 10 17:16:17 2015 +0100
+++ b/hotspot/src/share/vm/oops/oop.hpp	Fri Feb 13 14:37:35 2015 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -108,7 +108,7 @@
   // to be able to figure out the size of an object knowing its klass.
   int size_given_klass(Klass* klass);
 
-  // type test operations (inlined in oop.inline.h)
+  // type test operations (inlined in oop.inline.hpp)
   bool is_instance()            const;
   bool is_instanceMirror()      const;
   bool is_instanceClassLoader() const;
@@ -117,6 +117,15 @@
   bool is_objArray()            const;
   bool is_typeArray()           const;
 
+  // type test operations that don't require inclusion of oop.inline.hpp.
+  bool is_instance_noinline()          const;
+  bool is_instanceMirror_noinline()    const;
+  bool is_instanceClassLoader_noline() const;
+  bool is_instanceRef_noline()         const;
+  bool is_array_noinline()             const;
+  bool is_objArray_noinline()          const;
+  bool is_typeArray_noinline()         const;
+
  private:
   // field addresses in oop
   void*     field_base(int offset)        const;
@@ -370,10 +379,15 @@
   markOop  displaced_mark() const;
   void     set_displaced_mark(markOop m);
 
+  static bool has_klass_gap();
+
   // for code generation
-  static int mark_offset_in_bytes()    { return offset_of(oopDesc, _mark); }
-  static int klass_offset_in_bytes()   { return offset_of(oopDesc, _metadata._klass); }
-  static int klass_gap_offset_in_bytes();
+  static int mark_offset_in_bytes()      { return offset_of(oopDesc, _mark); }
+  static int klass_offset_in_bytes()     { return offset_of(oopDesc, _metadata._klass); }
+  static int klass_gap_offset_in_bytes() {
+    assert(has_klass_gap(), "only applicable to compressed klass pointers");
+    return klass_offset_in_bytes() + sizeof(narrowKlass);
+  }
 };
 
 #endif // SHARE_VM_OOPS_OOP_HPP