--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/extended/JavaWriteNode.java	Thu Mar 28 11:06:00 2019 -0700
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/extended/JavaWriteNode.java	Thu Mar 28 19:39:14 2019 +0100
@@ -24,6 +24,8 @@
 
 package org.graalvm.compiler.nodes.extended;
 
+import org.graalvm.compiler.core.common.type.Stamp;
+import org.graalvm.compiler.core.common.type.StampFactory;
 import org.graalvm.compiler.graph.NodeClass;
 import org.graalvm.compiler.nodeinfo.NodeInfo;
 import org.graalvm.compiler.nodes.StateSplit;
@@ -72,4 +74,9 @@
     public boolean isCompressible() {
         return compressible;
     }
+
+    @Override
+    public Stamp getAccessStamp() {
+        return StampFactory.forKind(writeKind);
+    }
 }