--- a/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl.java	Wed Nov 21 12:36:16 2018 -0800
+++ b/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotResolvedObjectTypeImpl.java	Wed Nov 21 22:02:17 2018 +0100
@@ -33,6 +33,7 @@
 import java.lang.annotation.Annotation;
 import java.lang.reflect.Array;
 import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.nio.ByteOrder;
@@ -75,6 +76,11 @@
     private HotSpotResolvedObjectType arrayOfType;
 
     /**
+     * Managed exclusively by {@link HotSpotResolvedJavaFieldImpl#toJava}.
+     */
+    HashMap<HotSpotResolvedJavaFieldImpl, Field> reflectionFieldCache;
+
+    /**
      * Gets the JVMCI mirror for a {@link Class} object.
      *
      * @return the {@link HotSpotResolvedJavaType} corresponding to {@code javaClass}