1 /*

     2  * Copyright (c) 2015, 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  */

    23 

    24 /*

    25  * @test

    26  * @bug 8134974

    27  * @summary Cannot pin eliminated arraycopy loads for deopt state in uncommon trap path if it is a loop predicate unc

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

    29  *

    30  */

    31 

    32 public class TestEliminatedArrayLoopPredicateCopyDeopt {

    33 

    34     static boolean test(int[] array_src) {

    35         int[] array_dst = new int[10];

    36         System.arraycopy(array_src, 0, array_dst, 0, 10);

    37 

    38         for (int i = 0; i < 100; i++) {

    39             array_src[i] = i;

    40         }

    41         if (array_dst[0] == 0) {

    42             return true;

    43         }

    44         return false;

    45     }

    46 

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

    48         int[] array_src = new int[100];

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

    50             test(array_src);

    51         }

    52     }

    53 }