# HG changeset patch
# User Christian Wimmer <christian.wimmer@oracle.com>
# Date 1350083445 25200
# Node ID 85724a16e4c2d7ffd11d33a1e673dea1e98e6ded
# Parent  3cd6c6743a6a73eac619db19f6740e79c3e1ca61
Remove BoxNode that is never used

diff -r 3cd6c6743a6a -r 85724a16e4c2 graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/BoxNode.java
--- a/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/BoxNode.java	Fri Oct 12 16:10:05 2012 -0700
+++ b/graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/extended/BoxNode.java	Fri Oct 12 16:10:45 2012 -0700
@@ -27,10 +27,11 @@
 import com.oracle.graal.nodes.*;
 import com.oracle.graal.nodes.java.*;
 import com.oracle.graal.nodes.java.MethodCallTargetNode.InvokeKind;
+import com.oracle.graal.nodes.spi.*;
 import com.oracle.graal.nodes.type.*;
 
 
-public final class BoxNode extends AbstractStateSplit implements StateSplit, Node.IterableNodeType {
+public final class BoxNode extends AbstractStateSplit implements StateSplit, Node.IterableNodeType, Canonicalizable {
 
     @Input private ValueNode source;
     private int bci;
@@ -61,4 +62,15 @@
         invokeNode.setStateAfter(stateAfter());
         ((StructuredGraph) graph()).replaceFixedWithFixed(this, invokeNode);
     }
+
+    @Override
+    public ValueNode canonical(CanonicalizerTool tool) {
+        for (Node usage : usages()) {
+            if (usage != stateAfter()) {
+                return this;
+            }
+        }
+        replaceAtUsages(null);
+        return null;
+    }
 }