--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/intrinsics/unsafe/UnsafeGetAddressTest.java	Mon Mar 24 08:43:10 2014 -0700
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2014, 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.
+ */
+
+/*
+ * @test
+ * @bug 6653795
+ * @summary C2 intrinsic for Unsafe.getAddress performs pointer sign extension on 32-bit systems
+ * @run main UnsafeGetAddressTest
+ *
+ */
+
+import sun.misc.Unsafe;
+import java.lang.reflect.*;
+
+public class UnsafeGetAddressTest {
+    private static Unsafe unsafe;
+
+    public static void main(String[] args) throws Exception {
+        Class c = UnsafeGetAddressTest.class.getClassLoader().loadClass("sun.misc.Unsafe");
+        Field f = c.getDeclaredField("theUnsafe");
+        f.setAccessible(true);
+        unsafe = (Unsafe)f.get(c);
+
+        long address = unsafe.allocateMemory(unsafe.addressSize());
+        unsafe.putAddress(address, 0x0000000080000000L);
+        // from sun.misc.Unsafe.getAddress' documentation:
+        // "If the native pointer is less than 64 bits wide, it is
+        // extended as an unsigned number to a Java long."
+        result = unsafe.getAddress(address);
+        System.out.printf("1: was 0x%x, expected 0x%x\n", result,
+                0x0000000080000000L);
+        for (int i = 0; i < 1000000; i++) {
+            result = unsafe.getAddress(address);
+        }
+
+        // The code has got compiled, check the result now
+        System.out.printf("2: was 0x%x, expected 0x%x\n", result,
+                0x0000000080000000L);
+        if (result != 0x0000000080000000L) {
+            System.out.println("Test Failed");
+            System.exit(97);
+        } else {
+            System.out.println("Test Passed");
+        }
+    }
+    static volatile long result;
+}
+