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diff --git a/tools/external/asm/org/objectweb/asm/tree/analysis/DataflowValue.java b/tools/external/asm/org/objectweb/asm/tree/analysis/DataflowValue.java
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+/***
+ * ASM: a very small and fast Java bytecode manipulation framework
+ * Copyright (c) 2000-2005 INRIA, France Telecom
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holders nor the names of its
+ *    contributors may be used to endorse or promote products derived from
+ *    this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.objectweb.asm.tree.analysis;
+
+import java.util.Set;
+
+import org.objectweb.asm.tree.AbstractInsnNode;
+
+/**
+ * A {@link Value} that is represented by its type in a two types type system.
+ * This type system distinguishes the ONEWORD and TWOWORDS types.
+ * 
+ * @author Eric Bruneton
+ */
+public class DataflowValue implements Value {
+
+    /**
+     * The size of this value.
+     */
+    public final int size;
+
+    /**
+     * The instructions that can produce this value. For example, for the Java
+     * code below, the instructions that can produce the value of <tt>i</tt>
+     * at line 5 are the txo ISTORE instructions at line 1 and 3:
+     * 
+     * <pre>
+     * 1: i = 0;
+     * 2: if (...) {
+     * 3:   i = 1;
+     * 4: }
+     * 5: return i;
+     * </pre>
+     * 
+     * This field is a set of {@link AbstractInsnNode} objects.
+     */
+    public final Set insns;
+
+    public DataflowValue(final int size) {
+        this(size, SmallSet.EMPTY_SET);
+    }
+
+    public DataflowValue(final int size, final AbstractInsnNode insn) {
+        this.size = size;
+        this.insns = new SmallSet(insn, null);
+    }
+
+    public DataflowValue(final int size, final Set insns) {
+        this.size = size;
+        this.insns = insns;
+    }
+
+    public int getSize() {
+        return size;
+    }
+
+    public boolean equals(final Object value) {
+        DataflowValue v = (DataflowValue) value;
+        return size == v.size && insns.equals(v.insns);
+    }
+
+    public int hashCode() {
+        return insns.hashCode();
+    }
+}