--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.virtual.bench/src/org/graalvm/compiler/virtual/bench/PartialEscapeBench.java	2017-02-15 17:09:34.301323005 -0800
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2015, 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.virtual.bench;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.annotations.Scope;
+import org.openjdk.jmh.annotations.State;
+import org.openjdk.jmh.annotations.Warmup;
+
+import org.graalvm.compiler.microbenchmarks.graal.GraalBenchmark;
+
+public class PartialEscapeBench extends GraalBenchmark {
+
+    private static class Thing {
+        final int id;
+        final String name;
+
+        Thing(int id, String name) {
+            this.id = id;
+            this.name = name;
+        }
+    }
+
+    @State(Scope.Thread)
+    public static class ThingsCache {
+
+        private Thing[] cache = new Thing[100];
+
+        public Thing getOrAdd(Thing input) {
+            if (cache[input.id] == null) {
+                cache[input.id] = input;
+            }
+            return cache[input.id];
+        }
+    }
+
+    @Benchmark
+    @Warmup(iterations = 30)
+    public String benchPartialEscape(ThingsCache cache) {
+        Thing thing = cache.getOrAdd(new Thing(42, "the answer!"));
+        return thing.name;
+    }
+}