--- old/src/hotspot/share/runtime/arguments.cpp	2018-09-19 15:51:39.736991300 -0700
+++ new/src/hotspot/share/runtime/arguments.cpp	2018-09-19 15:51:38.878314100 -0700
@@ -1633,6 +1633,10 @@
 void Arguments::set_use_compressed_oops() {
 #ifndef ZERO
 #ifdef _LP64
+  if(AllocateOldGenAt != NULL) {
+    FLAG_SET_ERGO(bool, UseCompressedOops, false);
+    return;
+  }
   // MaxHeapSize is not set up properly at this point, but
   // the only value that can override MaxHeapSize if we are
   // to use UseCompressedOops is InitialHeapSize.