--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/arraycopy/UnsafeArrayCopyNode.java	Tue Apr 07 12:21:08 2015 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/arraycopy/UnsafeArrayCopyNode.java	Tue Apr 07 13:30:09 2015 +0200
@@ -34,7 +34,7 @@
 import com.oracle.graal.replacements.SnippetTemplate.Arguments;
 
 @NodeInfo(allowedUsageTypes = {InputType.Memory})
-public final class UnsafeArrayCopyNode extends ArrayRangeWriteNode implements Lowerable, MemoryCheckpoint.Single {
+public final class UnsafeArrayCopyNode extends ArrayRangeWriteNode implements Lowerable, MemoryCheckpoint.Single, MemoryAccess {
 
     public static final NodeClass<UnsafeArrayCopyNode> TYPE = NodeClass.create(UnsafeArrayCopyNode.class);
     @Input ValueNode src;
@@ -44,6 +44,8 @@
     @Input ValueNode length;
     @OptionalInput ValueNode layoutHelper;
 
+    @OptionalInput(InputType.Memory) MemoryNode lastLocationAccess;
+
     protected Kind elementKind;
 
     public UnsafeArrayCopyNode(ValueNode src, ValueNode srcPos, ValueNode dest, ValueNode destPos, ValueNode length, ValueNode layoutHelper, Kind elementKind) {
@@ -122,6 +124,15 @@
         return any();
     }
 
+    public MemoryNode getLastLocationAccess() {
+        return lastLocationAccess;
+    }
+
+    public void setLastLocationAccess(MemoryNode lla) {
+        updateUsagesInterface(lastLocationAccess, lla);
+        lastLocationAccess = lla;
+    }
+
     @NodeIntrinsic
     public static native void arraycopy(Object src, int srcPos, Object dest, int destPos, int length, @ConstantNodeParameter Kind elementKind);