/*

 * Copyright (c) 2016, 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 8155635

 * @modules java.base/jdk.internal.misc

 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -Xbatch -XX:-TieredCompilation compiler.unsafe.MixedUnsafeStoreObject

 * @run main/othervm -Xbatch compiler.unsafe.MixedUnsafeStoreObject

 */

package compiler.unsafe;

import jdk.internal.misc.Unsafe;

public class MixedUnsafeStoreObject {

    static final Unsafe UNSAFE = Unsafe.getUnsafe();

    static final long F_OFFSET;

    static {

        try {

            F_OFFSET = UNSAFE.objectFieldOffset(T.class.getDeclaredField("f"));

        } catch (Exception e) {

            throw new Error(e);

        }

    }

    static class T {

        Object f;

    }

    public static void testFieldInstanceObject(Object t) {

        for (int c = 0; c < 20000; c++) { // trigger OSR compilation

            // java/lang/Object+12 *

            // _base = InstPtr, _ptr = BotPTR, _field = NULL, mismatched = true

        }

    }

    public static void testFieldInstanceT(T t) {

        for (int c = 0; c < 20000; c++) { // trigger OSR compilation

            // ...$T+12 *

            // _base = InstPtr, _ptr = BotPTR, _field = T.f, mismatched = false

        }

    }

    public static void main(String[] args) {

        testFieldInstanceObject(new T());

        testFieldInstanceT(new T());

    }

}