--- old/src/hotspot/share/gc/g1/g1ParScanThreadState.cpp	2018-03-21 16:41:03.979888182 +0100
+++ new/src/hotspot/share/gc/g1/g1ParScanThreadState.cpp	2018-03-21 16:41:03.779888189 +0100
@@ -33,6 +33,7 @@
 #include "gc/shared/gcTrace.hpp"
 #include "gc/shared/taskqueue.inline.hpp"
 #include "memory/allocation.inline.hpp"
+#include "oops/access.inline.hpp"
 #include "oops/oop.inline.hpp"
 #include "runtime/prefetch.inline.hpp"
 
@@ -104,7 +105,7 @@
   assert(ref != NULL, "invariant");
   assert(UseCompressedOops, "sanity");
   assert(!has_partial_array_mask(ref), "ref=" PTR_FORMAT, p2i(ref));
-  oop p = oopDesc::load_decode_heap_oop(ref);
+  oop p = RawAccess<>::oop_load(ref);
   assert(_g1h->is_in_g1_reserved(p),
          "ref=" PTR_FORMAT " p=" PTR_FORMAT, p2i(ref), p2i(p));
   return true;
@@ -118,7 +119,7 @@
     assert(_g1h->is_in_cset(p),
            "ref=" PTR_FORMAT " p=" PTR_FORMAT, p2i(ref), p2i(p));
   } else {
-    oop p = oopDesc::load_decode_heap_oop(ref);
+    oop p = RawAccess<>::oop_load(ref);
     assert(_g1h->is_in_g1_reserved(p),
            "ref=" PTR_FORMAT " p=" PTR_FORMAT, p2i(ref), p2i(p));
   }