--- a/src/hotspot/share/gc/g1/heapRegionManager.cpp	Wed Nov 27 10:21:22 2019 +0100
+++ b/src/hotspot/share/gc/g1/heapRegionManager.cpp	Tue Nov 26 10:47:46 2019 +0100
@@ -33,6 +33,8 @@
 #include "gc/g1/heterogeneousHeapRegionManager.hpp"
 #include "logging/logStream.hpp"
 #include "memory/allocation.hpp"
+#include "runtime/atomic.hpp"
+#include "runtime/orderAccess.hpp"
 #include "utilities/bitMap.inline.hpp"
 
 class MasterFreeRegionListChecker : public HeapRegionSetChecker {