--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/7088419/CRCTest.java	Tue Jul 02 20:42:12 2013 -0400
@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2013, 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 7088419
+   @run main CRCTest
+   @summary Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32 and java.util.zip.Adler32
+ */
+
+import java.nio.ByteBuffer;
+import java.util.zip.CRC32;
+import java.util.zip.Checksum;
+
+public class CRCTest {
+
+    public static void main(String[] args) throws Exception {
+
+        byte[] b = initializedBytes(4096 * 4096);
+
+        {
+            CRC32 crc1 = new CRC32();
+            CRC32 crc2 = new CRC32();
+            CRC32 crc3 = new CRC32();
+            CRC32 crc4 = new CRC32();
+
+            crc1.update(b, 0, b.length);
+            updateSerial(crc2, b, 0, b.length);
+            updateDirect(crc3, b, 0, b.length);
+            updateSerialSlow(crc4, b, 0, b.length);
+
+            check(crc1, crc2);
+            check(crc3, crc4);
+            check(crc1, crc3);
+
+            crc1.update(17);
+            crc2.update(17);
+            crc3.update(17);
+            crc4.update(17);
+
+            crc1.update(b, 1, b.length-2);
+            updateSerial(crc2, b, 1, b.length-2);
+            updateDirect(crc3, b, 1, b.length-2);
+            updateSerialSlow(crc4, b, 1, b.length-2);
+
+            check(crc1, crc2);
+            check(crc3, crc4);
+            check(crc1, crc3);
+
+            report("finished huge crc", crc1, crc2, crc3, crc4);
+
+            for (int i = 0; i < 256; i++) {
+                for (int j = 0; j < 256; j += 1) {
+                    crc1.update(b, i, j);
+                    updateSerial(crc2, b, i, j);
+                    updateDirect(crc3, b, i, j);
+                    updateSerialSlow(crc4, b, i, j);
+
+                    check(crc1, crc2);
+                    check(crc3, crc4);
+                    check(crc1, crc3);
+
+                }
+            }
+
+            report("finished small survey crc", crc1, crc2, crc3, crc4);
+        }
+
+    }
+
+    private static void report(String s, Checksum crc1, Checksum crc2,
+            Checksum crc3, Checksum crc4) {
+        System.out.println(s + ", crc1 = " + crc1.getValue() +
+                ", crc2 = " + crc2.getValue()+
+                ", crc3 = " + crc3.getValue()+
+                ", crc4 = " + crc4.getValue());
+    }
+
+    private static void check(Checksum crc1, Checksum crc2) throws Exception {
+        if (crc1.getValue() != crc2.getValue()) {
+            String s = "value 1 = " + crc1.getValue() + ", value 2 = " + crc2.getValue();
+            System.err.println(s);
+            throw new Exception(s);
+        }
+    }
+
+    private static byte[] initializedBytes(int M) {
+        byte[] bytes = new byte[M];
+        for (int i = 0; i < bytes.length; i++) {
+            bytes[i] = (byte) i;
+        }
+        return bytes;
+    }
+
+    private static void updateSerial(Checksum crc, byte[] b, int start, int length) {
+        for (int i = 0; i < length; i++)
+            crc.update(b[i+start]);
+    }
+
+    private static void updateSerialSlow(Checksum crc, byte[] b, int start, int length) {
+        for (int i = 0; i < length; i++)
+            crc.update(b[i+start]);
+        crc.getValue();
+    }
+
+    private static void updateDirect(CRC32 crc3, byte[] b, int start, int length) {
+        ByteBuffer buf = ByteBuffer.allocateDirect(length);
+        buf.put(b, start, length);
+        buf.flip();
+        crc3.update(buf);
+    }
+}