jdk8-mips64-public/hotspot: test/compiler/8011706/Test8011706.java@49b5160951dd

     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 8011706

    27  * @summary loop invariant code motion may move load before store to the same field

    28  * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation Test8011706

    29  *

    30  */

    32 public class Test8011706 {

    33     int[] array;

    35     void m(boolean test, int[] array1, int[] array2) {

    36         int i = 0;

    37         if (test) {

    38             array = array1;

    39         } else {

    40             array = array2;

    41         }

    43         while(true) {

    44             int v = array[i];

    45             i++;

    46             if (i >= 10) return;

    47         }

    48     }

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

    51         int[] new_array = new int[10];

    52         Test8011706 ti = new Test8011706();

    53         boolean failed = false;

    54         try {

    55             for (int i = 0; i < 10000; i++) {

    56                 ti.array = null;

    57                 ti.m(true, new_array, new_array);

    58             }

    59         } catch(NullPointerException ex) {

    60             throw new RuntimeException("TEST FAILED", ex);

    61         }

    62         System.out.println("TEST PASSED");

    63     }

    65 }

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