jdk8-mips64-public/hotspot: test/compiler/8011771/Test8011771.java@dbb05f6d93c4

8051344: JVM crashed in Compile::start() during method parsing w/ UseRTMDeopt turned on
Summary: call rtm_deopt() only if there were no compilation bailouts before.
Reviewed-by: kvn

     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 8011771

    27  * @summary Array bound check elimination's in block motion doesn't always reset its data structures from one step to the other.

    28  * @run main/othervm -XX:-BackgroundCompilation Test8011771

    29  *

    30  */

    32 public class Test8011771 {

    34     static void m(int[] a, int[] b, int j) {

    35         // Array bound check elimination inserts a predicate before

    36         // the loop. We'll have the predicate fail, so the method is

    37         // recompiled without optimistic optimizations

    38         for (int i = 0; i < 10; i++) {

    39             a[i] = i;

    40         }

    42         // The test itself

    43         a[j] = 0;

    44         a[j+5] = 0;

    45         b[j+4] = 0; // this range check shouldn't be eliminated

    46     }

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

    49         int[] arr1 = new int[10], arr2 = new int[10];

    50         // force compilation:

    51         for (int i = 0; i < 5000; i++) {

    52             m(arr1, arr2, 0);

    53         }

    55         try {

    56             m(new int[1], null, 0); // force predicate failure

    57         } catch(ArrayIndexOutOfBoundsException e) {}

    59         // force compilation again (no optimistic opts):

    60         for (int i = 0; i < 5000; i++) {

    61             m(arr1, arr2, 0);

    62         }

    64         // Check that the range check  on the second array wasn't optimized out

    65         boolean success = false;

    66         try {

    67             m(arr1, new int[1], 0);

    68         } catch(ArrayIndexOutOfBoundsException e) {

    69             success = true;

    70         }

    71         if (success) {

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

    73         } else {

    74             throw new RuntimeException("TEST FAILED: erroneous bound check elimination");

    75         }

    76     }

    77 }

Mercurial > jdk8-mips64-public > hotspot / file revision

test/compiler/8011771/Test8011771.java@dbb05f6d93c4

test/compiler/8011771/Test8011771.java