/*

 * 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 7173584

 * @summary arraycopy as macro node

 *

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

 *                   compiler.arraycopy.TestArrayCopyMacro

 */

package compiler.arraycopy;

public class TestArrayCopyMacro {

    static class A {

    }

    // In its own method so profiling reports both branches taken

    static Object m2(Object o1, Object o2, int i) {

        if (i == 4) {

            return o1;

        }

        return o2;

    }

    static Object m1(A[] src, Object dest) {

        int i = 1;

        // won't be optimized out until after parsing

        for (; i < 3; i *= 4) {

        }

        dest = m2(new A[10], dest, i);

        // dest is new array here but C2 picks the "disjoint" stub

        // only if stub to call is decided after parsing

        System.arraycopy(src, 0, dest, 0, 10);

        return dest;

    }

    public static void main(String[] args) {

        A[] array_src = new A[10];

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

            array_src[i] = new A();

        }

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

            m2(null, null, 0);

        }

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

            Object[] array_dest = (Object[])m1(array_src, null);

            for (int j = 0; j < array_src.length; j++) {

                if (array_dest[j] != array_src[j]) {

                    throw new RuntimeException("copy failed at index " + j + " src = " + array_src[j] + " dest = " + array_dest[j]);

                }

            }

        }

    }

}