--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.bytecode/src/org/graalvm/compiler/bytecode/BytecodeTableSwitch.java	2017-02-15 16:56:43.912716297 -0800
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package org.graalvm.compiler.bytecode;
+
+/**
+ * A utility for processing {@link Bytecodes#TABLESWITCH} bytecodes.
+ */
+public class BytecodeTableSwitch extends BytecodeSwitch {
+
+    private static final int OFFSET_TO_LOW_KEY = 4;
+    private static final int OFFSET_TO_HIGH_KEY = 8;
+    private static final int OFFSET_TO_FIRST_JUMP_OFFSET = 12;
+    private static final int JUMP_OFFSET_SIZE = 4;
+
+    /**
+     * Constructor for a {@link BytecodeStream}.
+     *
+     * @param stream the {@code BytecodeStream} containing the switch instruction
+     * @param bci the index in the stream of the switch instruction
+     */
+    public BytecodeTableSwitch(BytecodeStream stream, int bci) {
+        super(stream, bci);
+    }
+
+    /**
+     * Gets the low key of the table switch.
+     *
+     * @return the low key
+     */
+    public int lowKey() {
+        return stream.readInt(alignedBci + OFFSET_TO_LOW_KEY);
+    }
+
+    /**
+     * Gets the high key of the table switch.
+     *
+     * @return the high key
+     */
+    public int highKey() {
+        return stream.readInt(alignedBci + OFFSET_TO_HIGH_KEY);
+    }
+
+    @Override
+    public int keyAt(int i) {
+        return lowKey() + i;
+    }
+
+    @Override
+    public int offsetAt(int i) {
+        return stream.readInt(alignedBci + OFFSET_TO_FIRST_JUMP_OFFSET + JUMP_OFFSET_SIZE * i);
+    }
+
+    @Override
+    public int numberOfCases() {
+        return highKey() - lowKey() + 1;
+    }
+
+    @Override
+    public int size() {
+        return alignedBci + OFFSET_TO_FIRST_JUMP_OFFSET + JUMP_OFFSET_SIZE * numberOfCases() - bci;
+    }
+}