/*

 * Copyright (c) 2015, 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.

 *

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 */

/*

 * @test

 * @bug 8080699

 * @summary eliminated arraycopy node still reachable through exception edges

 *

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

 *                   compiler.arraycopy.TestDeadArrayCopyOnMemChain

 */

package compiler.arraycopy;

public class TestDeadArrayCopyOnMemChain {

    static class A {

        int f;

    }

    static void test_helper(Object o) {

    }

    static void test(int src_off, boolean flag) {

        // dst is eliminated first. Eliminating dst causes src to be

        // eliminated. When working on the safepoint at the uncommon

        // trap in the exception handler, the eliminated ArrayCopyNode

        // is reached through the exception edges.

        Object[] dst = new Object[10];

        Object[] src = new Object[10];

        // src_off causes the exception handler to be run sometimes

        try {

            System.arraycopy(src, src_off, dst, 0, 10);

        } catch (IndexOutOfBoundsException ioobe) {

            // flag always false so test becomes uncommon trap. Make

            // sure src is live at the unc.

            if (flag) {

                test_helper(src);

            }

        }

    }

    static public void main(String[] args) {

        for (int i = 0; i < 20000; i++) {

            test((i%2) == 0 ? 0 : -1, false);

        }

    }

}