jdk8-mips64-public/hotspot: test/compiler/8007722/Test8007722.java@5dcfeb396fed

     1 /*

     2  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    24 /*

    25  * @test

    26  * @bug 8007722

    27  * @summary GetAndSetP's MachNode should capture bottom type

    28  * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation Test8007722

    29  *

    30  */

    32 import java.util.concurrent.atomic.*;

    34 public class Test8007722 {

    36     int i;

    37     static AtomicReference<Test8007722> ref;

    39     static int test(Test8007722 new_obj) {

    40         Test8007722 o = ref.getAndSet(new_obj);

    41         int ret = o.i;

    42         o.i = 5;

    43         return ret;

    44     }

    46     static public void main(String[] args) {

    47         Test8007722 obj = new Test8007722();

    48         ref = new AtomicReference<Test8007722>(obj);

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

    51             test(obj);

    52         }

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

    55     }

    56 }

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