/*

 * Copyright (c) 2018, Red Hat, 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

/**

 * @test

 * @bug 8193597

 * @summary limit test is shared with out of loop if

 *

 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-BackgroundCompilation -XX:LoopUnrollLimit=0 -XX:+UseCountedLoopSafepoints -XX:LoopStripMiningIter=1000 LimitSharedwithOutOfLoopTest

 *

 */

public class LimitSharedwithOutOfLoopTest {

    public static void main(String[] args) {

        boolean[] array1 = new boolean[2001];

        boolean[] array2 = new boolean[2001];

        boolean[] array3 = new boolean[2001];

        array2[1000] = true;

        array3[2000] = true;

        for (int i = 0; i < 20_000; i++) {

            if (test(2000, array1)) {

                throw new RuntimeException("bad return");

            }

            if (!test(2000, array2)) {

                throw new RuntimeException("bad return");

            }

            if (test(2000, array3)) {

                throw new RuntimeException("bad return");

            }

        }

    }

    static volatile boolean barrier;

    private static boolean test(int limit, boolean[] array) {

        for (int i = 0; i < limit;) {

            i++;

            if (array[i]) {

                // Same test as end of loop test. When loop is strip

                // mined, this must not become the end of inner loop

                // test.

                if (i < limit) {

                    return true;

                }

                return false;

            }

            barrier = true;

        }

        return false;

    }

}