1 /*

     2  * Copyright (c) 2019, Red Hat, Inc. 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 8134739

    27  * @summary SEGV in SuperWord::get_pre_loop_end

    28  * @run main/othervm compiler.loopopts.superword.TestFuzzPreLoop

    29  */

    30 

    31 package compiler.loopopts.superword;

    32 

    33 public class TestFuzzPreLoop {

    34     static Object sink;

    35     short sFld = -19206;

    36 

    37     void doTest() {

    38         int[] arr = new int[400];

    39 

    40         for (int i1 = 0; i1 < 200; i1++) {

    41             for (int i2 = 0; i2 < 100; i2++) {

    42                 sink = new int[400];

    43             }

    44             arr[i1] = 0;

    45         }

    46 

    47         float f1 = 0;

    48         for (int i3 = 0; i3 < 200; i3++) {

    49             f1 += i3 * i3;

    50         }

    51         for (int i4 = 0; i4 < 200; i4++) {

    52             f1 += i4 - sFld;

    53         }

    54 

    55         System.out.println(arr);

    56         System.out.println(f1);

    57     }

    58 

    59     public static void main(String... args) throws Exception {

    60         TestFuzzPreLoop test = new TestFuzzPreLoop();

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

    62             test.doTest();

    63         }

    64     }

    65 }