--- /dev/null	2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.jtt/src/org/graalvm/compiler/jtt/JTTTest.java	2016-12-09 00:50:11.616177715 -0800
@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2012, 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.jtt;
+
+import static java.lang.reflect.Modifier.isStatic;
+
+import java.util.Collections;
+import java.util.Set;
+
+import jdk.vm.ci.code.InstalledCode;
+import jdk.vm.ci.meta.DeoptimizationReason;
+import jdk.vm.ci.meta.JavaConstant;
+import jdk.vm.ci.meta.JavaType;
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+
+import org.junit.Assert;
+
+import org.graalvm.compiler.core.common.CompilationIdentifier;
+import org.graalvm.compiler.core.test.GraalCompilerTest;
+import org.graalvm.compiler.nodes.ConstantNode;
+import org.graalvm.compiler.nodes.ParameterNode;
+import org.graalvm.compiler.nodes.StructuredGraph;
+import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;
+
+/**
+ * Base class for the JTT tests.
+ * <p>
+ * These tests are executed twice: once with arguments passed to the execution and once with the
+ * arguments bound to the test's parameters during compilation. The latter is a good test of
+ * canonicalization.
+ */
+public class JTTTest extends GraalCompilerTest {
+
+    public static final class DummyTestClass {
+    }
+
+    protected static final Set<DeoptimizationReason> EMPTY = Collections.<DeoptimizationReason> emptySet();
+    /**
+     * The arguments which, if non-null, will replace the Locals in the test method's graph.
+     */
+    Object[] argsToBind;
+
+    public JTTTest() {
+        Assert.assertNotNull(getCodeCache());
+    }
+
+    @Override
+    protected StructuredGraph parseEager(ResolvedJavaMethod m, AllowAssumptions allowAssumptions, CompilationIdentifier compilationId) {
+        StructuredGraph graph = super.parseEager(m, allowAssumptions, compilationId);
+        if (argsToBind != null) {
+            Object receiver = isStatic(m.getModifiers()) ? null : this;
+            Object[] args = argsWithReceiver(receiver, argsToBind);
+            JavaType[] parameterTypes = m.toParameterTypes();
+            assert parameterTypes.length == args.length;
+            for (ParameterNode param : graph.getNodes(ParameterNode.TYPE)) {
+                JavaConstant c = getSnippetReflection().forBoxed(parameterTypes[param.index()].getJavaKind(), args[param.index()]);
+                ConstantNode replacement = ConstantNode.forConstant(c, getMetaAccess(), graph);
+                param.replaceAtUsages(replacement);
+            }
+        }
+        return graph;
+    }
+
+    @Override
+    protected InstalledCode getCode(ResolvedJavaMethod method, StructuredGraph graph) {
+        return super.getCode(method, graph, argsToBind != null);
+    }
+
+    Double delta;
+
+    @Override
+    protected void assertDeepEquals(Object expected, Object actual) {
+        if (delta != null) {
+            Assert.assertEquals(((Number) expected).doubleValue(), ((Number) actual).doubleValue(), delta);
+        } else {
+            super.assertDeepEquals(expected, actual);
+        }
+    }
+
+    @SuppressWarnings("hiding")
+    protected void runTestWithDelta(double delta, String name, Object... args) {
+        this.delta = Double.valueOf(delta);
+        runTest(name, args);
+    }
+
+    protected void runTest(String name, Object... args) {
+        runTest(EMPTY, name, args);
+    }
+
+    protected void runTest(Set<DeoptimizationReason> shouldNotDeopt, String name, Object... args) {
+        runTest(shouldNotDeopt, true, false, name, args);
+    }
+
+    protected void runTest(Set<DeoptimizationReason> shouldNotDeopt, boolean bind, boolean noProfile, String name, Object... args) {
+        ResolvedJavaMethod method = getResolvedJavaMethod(name);
+        Object receiver = method.isStatic() ? null : this;
+
+        Result expect = executeExpected(method, receiver, args);
+
+        if (noProfile) {
+            method.reprofile();
+        }
+
+        testAgainstExpected(method, expect, shouldNotDeopt, receiver, args);
+        if (args.length > 0 && bind) {
+            if (noProfile) {
+                method.reprofile();
+            }
+
+            this.argsToBind = args;
+            testAgainstExpected(method, expect, shouldNotDeopt, receiver, args);
+            this.argsToBind = null;
+        }
+    }
+}