--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.test/src/org/graalvm/compiler/test/JLRModule.java	2017-02-15 17:09:33.332280579 -0800
@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2016, 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.test;
+
+import java.lang.reflect.Method;
+
+/**
+ * Facade for the {@code java.lang.reflect.Module} class introduced in JDK9 that allows tests to be
+ * developed against JDK8 but use module logic if deployed on JDK9.
+ */
+public class JLRModule {
+
+    static {
+        if (GraalTest.Java8OrEarlier) {
+            throw new AssertionError("Use of " + JLRModule.class + " only allowed if " + GraalTest.class.getName() + ".JDK8OrEarlier is false");
+        }
+    }
+
+    private final Object realModule;
+
+    public JLRModule(Object module) {
+        this.realModule = module;
+    }
+
+    private static final Class<?> moduleClass;
+    private static final Method getModuleMethod;
+    private static final Method getUnnamedModuleMethod;
+    private static final Method getPackagesMethod;
+    private static final Method isExportedMethod;
+    private static final Method isExported2Method;
+    private static final Method addExportsMethod;
+    static {
+        try {
+            moduleClass = Class.forName("java.lang.reflect.Module");
+            getModuleMethod = Class.class.getMethod("getModule");
+            getUnnamedModuleMethod = ClassLoader.class.getMethod("getUnnamedModule");
+            getPackagesMethod = moduleClass.getMethod("getPackages");
+            isExportedMethod = moduleClass.getMethod("isExported", String.class);
+            isExported2Method = moduleClass.getMethod("isExported", String.class, moduleClass);
+            addExportsMethod = moduleClass.getMethod("addExports", String.class, moduleClass);
+        } catch (Exception e) {
+            throw new AssertionError(e);
+        }
+    }
+
+    public static JLRModule fromClass(Class<?> cls) {
+        try {
+            return new JLRModule(getModuleMethod.invoke(cls));
+        } catch (Exception e) {
+            throw new AssertionError(e);
+        }
+    }
+
+    public static JLRModule getUnnamedModuleFor(ClassLoader cl) {
+        try {
+            return new JLRModule(getUnnamedModuleMethod.invoke(cl));
+        } catch (Exception e) {
+            throw new AssertionError(e);
+        }
+    }
+
+    /**
+     * Exports all packages in this module to a given module.
+     */
+    public void exportAllPackagesTo(JLRModule module) {
+        if (this != module) {
+            for (String pkg : getPackages()) {
+                // Export all JVMCI packages dynamically instead
+                // of requiring a long list of -XaddExports
+                // options on the JVM command line.
+                if (!isExported(pkg, module)) {
+                    addExports(pkg, module);
+                }
+            }
+        }
+    }
+
+    public String[] getPackages() {
+        try {
+            return (String[]) getPackagesMethod.invoke(realModule);
+        } catch (Exception e) {
+            throw new AssertionError(e);
+        }
+    }
+
+    public boolean isExported(String pn) {
+        try {
+            return (Boolean) isExportedMethod.invoke(realModule, pn);
+        } catch (Exception e) {
+            throw new AssertionError(e);
+        }
+    }
+
+    public boolean isExported(String pn, JLRModule other) {
+        try {
+            return (Boolean) isExported2Method.invoke(realModule, pn, other.realModule);
+        } catch (Exception e) {
+            throw new AssertionError(e);
+        }
+    }
+
+    public void addExports(String pn, JLRModule other) {
+        try {
+            addExportsMethod.invoke(realModule, pn, other.realModule);
+        } catch (Exception e) {
+            throw new AssertionError(e);
+        }
+    }
+}