--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/InstanceOfDynamicTest.java	2017-02-15 17:08:49.422358130 -0800
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 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.replacements.test;
+
+import org.junit.Test;
+
+import org.graalvm.compiler.core.test.GraalCompilerTest;
+import org.graalvm.compiler.nodes.java.InstanceOfDynamicNode;
+
+/**
+ * Tests for {@link InstanceOfDynamicNode}.
+ */
+public class InstanceOfDynamicTest extends GraalCompilerTest {
+
+    public static int id(int value) {
+        return value;
+    }
+
+    @Test
+    public void test100() {
+        final Object nul = null;
+        test("isStringDynamic", nul);
+        test("isStringDynamic", "object");
+        test("isStringDynamic", Object.class);
+    }
+
+    @Test
+    public void test101() {
+        final Object nul = null;
+        test("isStringIntDynamic", nul);
+        test("isStringIntDynamic", "object");
+        test("isStringIntDynamic", Object.class);
+    }
+
+    @Test
+    public void test103() {
+        test("isInstanceDynamic", String.class, null);
+        test("isInstanceDynamic", String.class, "object");
+        test("isInstanceDynamic", String.class, Object.class);
+        test("isInstanceDynamic", int.class, null);
+        test("isInstanceDynamic", int.class, "Object");
+        test("isInstanceDynamic", int.class, Object.class);
+    }
+
+    @Test
+    public void test104() {
+        test("isInstanceIntDynamic", String.class, null);
+        test("isInstanceIntDynamic", String.class, "object");
+        test("isInstanceIntDynamic", String.class, Object.class);
+        test("isInstanceIntDynamic", int.class, null);
+        test("isInstanceIntDynamic", int.class, "Object");
+        test("isInstanceIntDynamic", int.class, Object.class);
+    }
+
+    public static boolean isStringDynamic(Object o) {
+        return String.class.isInstance(o);
+    }
+
+    public static int isStringIntDynamic(Object o) {
+        if (String.class.isInstance(o)) {
+            return o.toString().length();
+        }
+        return o.getClass().getName().length();
+    }
+
+    public static boolean isInstanceDynamic(Class<?> c, Object o) {
+        return c.isInstance(o);
+    }
+
+    public static int isInstanceIntDynamic(Class<?> c, Object o) {
+        if (c.isInstance(o)) {
+            return o.toString().length();
+        }
+        return o.getClass().getName().length();
+    }
+}