--- old/src/share/vm/ci/ciInstanceKlass.cpp	2013-05-06 18:14:11.000000000 -0700
+++ new/src/share/vm/ci/ciInstanceKlass.cpp	2013-05-06 18:14:11.000000000 -0700
@@ -211,13 +211,42 @@
 
 // ------------------------------------------------------------------
 // ciInstanceKlass::uses_default_loader
-bool ciInstanceKlass::uses_default_loader() {
+bool ciInstanceKlass::uses_default_loader() const {
   // Note:  We do not need to resolve the handle or enter the VM
   // in order to test null-ness.
   return _loader == NULL;
 }
 
 // ------------------------------------------------------------------
+
+/**
+ * Return basic type of boxed value for box klass or T_OBJECT if not.
+ */
+BasicType ciInstanceKlass::box_klass_type() const {
+  if (uses_default_loader() && is_loaded()) {
+    return SystemDictionary::box_klass_type(get_Klass());
+  } else {
+    return T_OBJECT;
+  }
+}
+
+/**
+ * Is this boxing klass?
+ */
+bool ciInstanceKlass::is_box_klass() const {
+  return is_java_primitive(box_klass_type());
+}
+
+/**
+ *  Is this boxed value offset?
+ */
+bool ciInstanceKlass::is_boxed_value_offset(int offset) const {
+  BasicType bt = box_klass_type();
+  return is_java_primitive(bt) &&
+         (offset == java_lang_boxing_object::value_offset_in_bytes(bt));
+}
+
+// ------------------------------------------------------------------
 // ciInstanceKlass::is_in_package
 //
 // Is this klass in the given package?