/*

 * Copyright (c) 2009, 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 6636138

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

 *

 * @run main/othervm -Xbatch

 *      -XX:CompileCommand=compileonly,compiler.c2.Test6636138_2::shift

 *      compiler.c2.Test6636138_2

 */

package compiler.c2;

public class Test6636138_2 {

    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(97);

            }

        }

    }

    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();

    }

}