--- /dev/null	2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/TypeCheckTest.java	2016-12-09 00:56:52.151833129 -0800
@@ -0,0 +1,82 @@
+/*
+ * 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.graalvm.compiler.core.common.CompilationIdentifier;
+import org.graalvm.compiler.core.test.GraalCompilerTest;
+import org.graalvm.compiler.nodes.StructuredGraph;
+
+import jdk.vm.ci.code.InstalledCode;
+import jdk.vm.ci.meta.JavaTypeProfile;
+import jdk.vm.ci.meta.JavaTypeProfile.ProfiledType;
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+import jdk.vm.ci.meta.TriState;
+
+/**
+ * Base class for instanceof test classes.
+ */
+public abstract class TypeCheckTest extends GraalCompilerTest {
+
+    protected abstract void replaceProfile(StructuredGraph graph, JavaTypeProfile profile);
+
+    protected JavaTypeProfile currentProfile;
+
+    @Override
+    protected StructuredGraph parseForCompile(ResolvedJavaMethod method, CompilationIdentifier compilationId) {
+        StructuredGraph graph = super.parseForCompile(method, compilationId);
+        if (currentProfile != null) {
+            replaceProfile(graph, currentProfile);
+        }
+        return graph;
+    }
+
+    @Override
+    protected InstalledCode getCode(final ResolvedJavaMethod method, final StructuredGraph graph) {
+        return getCode(method, graph, currentProfile != null);
+    }
+
+    protected JavaTypeProfile profile(Class<?>... types) {
+        return profile(TriState.FALSE, types);
+    }
+
+    protected JavaTypeProfile profile(TriState nullSeen, Class<?>... types) {
+        if (types.length == 0) {
+            return null;
+        }
+        ProfiledType[] ptypes = new ProfiledType[types.length];
+        for (int i = 0; i < types.length; i++) {
+            ptypes[i] = new ProfiledType(getMetaAccess().lookupJavaType(types[i]), 1.0D / types.length);
+        }
+        return new JavaTypeProfile(nullSeen, 0.0D, ptypes);
+    }
+
+    protected void test(String name, JavaTypeProfile profile, Object... args) {
+        assert currentProfile == null;
+        currentProfile = profile;
+        try {
+            super.test(name, args);
+        } finally {
+            currentProfile = null;
+        }
+    }
+}