/*

 * 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

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 * questions.

 */

/*

 * @test

 * @bug 8011706

 * @summary loop invariant code motion may move load before store to the same field

 *

 * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation

 *      compiler.c1.Test8011706

 */

package compiler.c1;

public class Test8011706 {

    int[] array;

    void m(boolean test, int[] array1, int[] array2) {

        int i = 0;

        if (test) {

            array = array1;

        } else {

            array = array2;

        }

        while(true) {

            int v = array[i];

            i++;

            if (i >= 10) return;

        }

    }

    static public void main(String[] args) {

        int[] new_array = new int[10];

        Test8011706 ti = new Test8011706();

        boolean failed = false;

        try {

            for (int i = 0; i < 10000; i++) {

                ti.array = null;

                ti.m(true, new_array, new_array);

            }

        } catch(NullPointerException ex) {

            throw new RuntimeException("TEST FAILED", ex);

        }

        System.out.println("TEST PASSED");

    }

}