diff a/src/hotspot/share/oops/cpCache.cpp b/src/hotspot/share/oops/cpCache.cpp
--- a/src/hotspot/share/oops/cpCache.cpp
+++ b/src/hotspot/share/oops/cpCache.cpp
@@ -772,19 +772,26 @@
   set_reference_map(NULL);
 }
 
 #if INCLUDE_CDS_JAVA_HEAP
 oop ConstantPoolCache::archived_references() {
-  if (CompressedOops::is_null(_archived_references)) {
+  if (_archived_references_index < 0) {
     return NULL;
   }
-  return HeapShared::materialize_archived_object(_archived_references);
+  return HeapShared::get_root(_archived_references_index);
+}
+
+void ConstantPoolCache::clear_archived_references() {
+  if (_archived_references_index >= 0) {
+    HeapShared::clear_root(_archived_references_index);
+    _archived_references_index = -1;
+  }
 }
 
 void ConstantPoolCache::set_archived_references(oop o) {
   assert(DumpSharedSpaces, "called only during runtime");
-  _archived_references = CompressedOops::encode(o);
+  _archived_references_index = HeapShared::append_root(o);
 }
 #endif
 
 #if INCLUDE_JVMTI
 // RedefineClasses() API support: