--- old/src/hotspot/share/oops/klass.cpp	2018-03-21 16:41:13.255887859 +0100
+++ new/src/hotspot/share/oops/klass.cpp	2018-03-21 16:41:13.055887865 +0100
@@ -35,6 +35,7 @@
 #include "memory/metaspaceShared.hpp"
 #include "memory/oopFactory.hpp"
 #include "memory/resourceArea.hpp"
+#include "oops/compressedOops.inline.hpp"
 #include "oops/instanceKlass.hpp"
 #include "oops/klass.inline.hpp"
 #include "oops/oop.inline.hpp"
@@ -569,7 +570,7 @@
 oop Klass::archived_java_mirror_raw() {
   assert(DumpSharedSpaces, "called only during runtime");
   assert(has_raw_archived_mirror(), "must have raw archived mirror");
-  return oopDesc::decode_heap_oop(_archived_mirror);
+  return CompressedOops::decode(_archived_mirror);
 }
 
 // Used at CDS runtime to get the archived mirror from shared class. Uses GC barrier.
@@ -582,7 +583,7 @@
 // No GC barrier
 void Klass::set_archived_java_mirror_raw(oop m) {
   assert(DumpSharedSpaces, "called only during runtime");
-  _archived_mirror = oopDesc::encode_heap_oop(m);
+  _archived_mirror = CompressedOops::encode(m);
 }
 #endif // INCLUDE_CDS_JAVA_HEAP