--- old/src/hotspot/share/gc/g1/g1Arguments.cpp	2018-11-19 17:19:00.227828000 -0800
+++ new/src/hotspot/share/gc/g1/g1Arguments.cpp	2018-11-19 17:18:59.322512700 -0800
@@ -147,5 +147,9 @@
 }
 
 CollectedHeap* G1Arguments::create_heap() {
+  if(AllocateOldGenAt != NULL) {
+    return create_heap_with_policy<G1CollectedHeap, G1HeteroCollectorPolicy>();
+  }
   return create_heap_with_policy<G1CollectedHeap, G1CollectorPolicy>();
+  
 }