--- /dev/null	2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.nodes/src/org/graalvm/compiler/nodes/debug/instrumentation/RootNameNode.java	2016-12-09 00:55:29.847205270 -0800
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2015, 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.nodes.debug.instrumentation;
+
+import static org.graalvm.compiler.nodeinfo.NodeCycles.CYCLES_IGNORED;
+import static org.graalvm.compiler.nodeinfo.NodeSize.SIZE_IGNORED;
+
+import org.graalvm.compiler.core.common.LocationIdentity;
+import org.graalvm.compiler.core.common.type.Stamp;
+import org.graalvm.compiler.graph.NodeClass;
+import org.graalvm.compiler.nodeinfo.NodeInfo;
+import org.graalvm.compiler.nodes.FixedWithNextNode;
+import org.graalvm.compiler.nodes.NamedLocationIdentity;
+import org.graalvm.compiler.nodes.StructuredGraph;
+import org.graalvm.compiler.nodes.debug.StringToBytesNode;
+import org.graalvm.compiler.nodes.memory.MemoryCheckpoint;
+import org.graalvm.compiler.nodes.spi.Lowerable;
+import org.graalvm.compiler.nodes.spi.LoweringTool;
+
+import jdk.vm.ci.meta.JavaKind;
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+
+/**
+ * The {@code RootNameNode} represents the name of the compilation root.
+ */
+@NodeInfo(cycles = CYCLES_IGNORED, size = SIZE_IGNORED)
+public final class RootNameNode extends FixedWithNextNode implements Lowerable, InstrumentationInliningCallback, MemoryCheckpoint.Single {
+
+    public static final NodeClass<RootNameNode> TYPE = NodeClass.create(RootNameNode.class);
+
+    public RootNameNode(Stamp stamp) {
+        super(TYPE, stamp);
+    }
+
+    /**
+     * resolve this node and replace with a {@link StringToBytesNode} that constructs the root
+     * method name in the compiled code. To ensure the correct result, this method should be invoked
+     * after inlining.
+     */
+    private void resolve(StructuredGraph graph) {
+        ResolvedJavaMethod method = graph.method();
+        String rootName = method == null ? "<unresolved method>" : (method.getDeclaringClass().toJavaName() + "." + method.getName() + method.getSignature().toMethodDescriptor());
+        StringToBytesNode stringToByteNode = graph().add(new StringToBytesNode(rootName, stamp()));
+        graph().replaceFixedWithFixed(this, stringToByteNode);
+    }
+
+    @Override
+    public void lower(LoweringTool tool) {
+        resolve(graph());
+    }
+
+    @Override
+    public void preInlineInstrumentation(InstrumentationNode instrumentation) {
+        // resolve to the method name of the original graph
+        resolve(instrumentation.graph());
+    }
+
+    @Override
+    public void postInlineInstrumentation(InstrumentationNode instrumentation) {
+    }
+
+    @Override
+    public LocationIdentity getLocationIdentity() {
+        return NamedLocationIdentity.getArrayLocation(JavaKind.Byte);
+    }
+
+}