--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core/src/org/graalvm/compiler/core/gen/InstructionPrinter.java	2017-02-15 16:58:04.556221264 -0800
@@ -0,0 +1,143 @@
+/*
+ * 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.core.gen;
+
+import static org.graalvm.compiler.core.gen.InstructionPrinter.InstructionLineColumn.BCI;
+import static org.graalvm.compiler.core.gen.InstructionPrinter.InstructionLineColumn.END;
+import static org.graalvm.compiler.core.gen.InstructionPrinter.InstructionLineColumn.INSTRUCTION;
+import static org.graalvm.compiler.core.gen.InstructionPrinter.InstructionLineColumn.USE;
+import static org.graalvm.compiler.core.gen.InstructionPrinter.InstructionLineColumn.VALUE;
+
+import org.graalvm.compiler.debug.LogStream;
+import org.graalvm.compiler.nodes.StateSplit;
+import org.graalvm.compiler.nodes.ValueNode;
+import org.graalvm.compiler.nodes.ValueNodeUtil;
+
+/**
+ * A utility for {@linkplain #printInstruction(ValueNode) printing} a node as an expression or
+ * statement.
+ */
+public class InstructionPrinter {
+
+    /**
+     * The columns printed in a tabulated instruction
+     * {@linkplain InstructionPrinter#printInstructionListing(ValueNode) listing}.
+     */
+    public enum InstructionLineColumn {
+        /**
+         * The instruction's bytecode index.
+         */
+        BCI(2, "bci"),
+
+        /**
+         * The instruction's use count.
+         */
+        USE(7, "use"),
+
+        /**
+         * The instruction as a value.
+         */
+        VALUE(12, "tid"),
+
+        /**
+         * The instruction formatted as an expression or statement.
+         */
+        INSTRUCTION(19, "instr"),
+
+        END(60, "");
+
+        final int position;
+        final String label;
+
+        InstructionLineColumn(int position, String label) {
+            this.position = position;
+            this.label = label;
+        }
+
+        /**
+         * Prints this column's label to a given stream after padding the stream with '_' characters
+         * until its {@linkplain LogStream#position() position} is equal to this column's position.
+         *
+         * @param out the print stream
+         */
+        public void printLabel(LogStream out) {
+            out.fillTo(position + out.indentationLevel(), '_');
+            out.print(label);
+        }
+
+        /**
+         * Prints space characters to a given stream until its {@linkplain LogStream#position()
+         * position} is equal to this column's position.
+         *
+         * @param out the print stream
+         */
+        public void advance(LogStream out) {
+            out.fillTo(position + out.indentationLevel(), ' ');
+        }
+    }
+
+    private final LogStream out;
+
+    public InstructionPrinter(LogStream out) {
+        this.out = out;
+    }
+
+    public LogStream out() {
+        return out;
+    }
+
+    /**
+     * Prints a header for the tabulated data printed by {@link #printInstructionListing(ValueNode)}
+     * .
+     */
+    public void printInstructionListingHeader() {
+        BCI.printLabel(out);
+        USE.printLabel(out);
+        VALUE.printLabel(out);
+        INSTRUCTION.printLabel(out);
+        END.printLabel(out);
+        out.println();
+    }
+
+    /**
+     * Prints an instruction listing on one line. The instruction listing is composed of the columns
+     * specified by {@link InstructionLineColumn}.
+     *
+     * @param instruction the instruction to print
+     */
+    public void printInstructionListing(ValueNode instruction) {
+        int indentation = out.indentationLevel();
+        out.fillTo(BCI.position + indentation, ' ').print(0).fillTo(USE.position + indentation, ' ').print("0").fillTo(VALUE.position + indentation, ' ').print(
+                        ValueNodeUtil.valueString(instruction)).fillTo(
+                                        INSTRUCTION.position + indentation, ' ');
+        printInstruction(instruction);
+        if (instruction instanceof StateSplit) {
+            out.print("  [state: " + ((StateSplit) instruction).stateAfter() + "]");
+        }
+        out.println();
+    }
+
+    public void printInstruction(ValueNode node) {
+        out.print(node.toString());
+    }
+}