src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/memory/AbstractWriteNode.java

*** 25,34 ****
--- 25,35 ----
  package org.graalvm.compiler.nodes.memory;
  
  import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_2;
  import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_1;
  
+ import org.graalvm.compiler.core.common.type.Stamp;
  import org.graalvm.compiler.core.common.type.StampFactory;
  import org.graalvm.compiler.graph.Node;
  import org.graalvm.compiler.graph.NodeClass;
  import org.graalvm.compiler.nodeinfo.InputType;
  import org.graalvm.compiler.nodeinfo.NodeInfo;
*** 88,93 ****
--- 89,96 ----
      public void setLastLocationAccess(MemoryNode lla) {
          Node newLla = ValueNodeUtil.asNode(lla);
          updateUsages(lastLocationAccess, newLla);
          lastLocationAccess = newLla;
      }
+ 
+     public abstract Stamp getAccessStamp();
  }