diff -r 13588c901957 -r 9cf78a70fa4f src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.jtt/src/org/graalvm/compiler/jtt/optimize/NestedLoop_EA.java
--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.jtt/src/org/graalvm/compiler/jtt/optimize/NestedLoop_EA.java	Thu Oct 17 20:27:44 2019 +0100
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.jtt/src/org/graalvm/compiler/jtt/optimize/NestedLoop_EA.java	Thu Oct 17 20:53:35 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -129,8 +129,7 @@
     }
 
     @Override
-    protected boolean checkHighTierGraph(StructuredGraph graph) {
+    protected void checkHighTierGraph(StructuredGraph graph) {
         assert graph.getNodes().filter(CommitAllocationNode.class).count() == 0 : "all allocations should be virtualized";
-        return true;
     }
 }