/*

 * Copyright 2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/**

 * @test

 * @bug 6636138

 * @summary SuperWord::co_locate_pack(Node_List* p) generates memory graph that leads to memory order violation.

 *

 * @run main/othervm -server -Xbatch -XX:CompileOnly=Test2.shift -XX:+UseSuperword Test2

 */

class Test2 {

    public static void init(int src[]) {

        // Initialize the array

        for (int i = 0; i < src.length; i++)

            src[i] = i;

    }

   public static void shift(int src[]) {

       //left-shift the array

       for (int i = src.length-1; i > 0; i--){

           int tmp  = src[i];

           src[i]   = src[i-1];

           src[i-1] = tmp;

       }

    }

    public static void verify(int src[]) {

        for (int i = 0; i < src.length; i++){

            int value = (i-1 + src.length)%src.length; // correct value after shifting

                if (src[i] != value) {

                    System.out.println("Error: src["+i+"] should be "+ value + " instead of " + src[i]);

                    System.exit(-1);

                }

        }

    }

    public static void test() {

        int[] src = new int[10];

        init(src);

        shift(src);

        verify(src);

    }

    public static void main(String[] args) {

        for (int i=0; i< 2000; i++)

            test();

    }

}