diff -r dd84de796f2c -r c8bc506106e3 src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp
--- a/src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp	Thu Sep 05 08:26:49 2019 +0200
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp	Thu Sep 05 11:09:12 2019 +0200
@@ -214,6 +214,9 @@
   ShenandoahRegionIterator _update_refs_iterator;
 
 public:
+
+  inline HeapWord* base() const { return _heap_region.start(); }
+
   inline size_t num_regions() const { return _num_regions; }
   inline bool is_heap_region_special() { return _heap_region_special; }