jdk8-mips64-public/hotspot: test/compiler/7044738/Test7044738.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) 2011, 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  */

    25 /**

    26  * @test

    27  * @bug 7044738

    28  * @summary Loop unroll optimization causes incorrect result

    29  *

    30  * @run main/othervm -Xbatch Test7044738

    31  */

    33 public class Test7044738 {

    35   private static final int INITSIZE = 10000;

    36   public int d[] = { 1, 2, 3, 4 };

    37   public int i, size;

    39   private static int iter = 5;

    41   boolean done() { return (--iter > 0); }

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

    44     Test7044738 t = new Test7044738();

    45     t.test();

    46   }

    48   int test() {

    50     while (done()) {

    51       size = INITSIZE;

    53       for (i = 0; i < size; i++) {

    54         d[0] = d[1]; // 2

    55         d[1] = d[2]; // 3

    56         d[2] = d[3]; // 4

    57         d[3] = d[0]; // 2

    59         d[0] = d[1]; // 3

    60         d[1] = d[2]; // 4

    61         d[2] = d[3]; // 2

    62         d[3] = d[0]; // 3

    64         d[0] = d[1]; // 4

    65         d[1] = d[2]; // 2

    66         d[2] = d[3]; // 3

    67         d[3] = d[0]; // 4

    69         d[0] = d[1]; // 2

    70         d[1] = d[2]; // 3

    71         d[2] = d[3]; // 4

    72         d[3] = d[0]; // 2

    74         d[0] = d[1]; // 3

    75         d[1] = d[2]; // 4

    76         d[2] = d[3]; // 2

    77         d[3] = d[0]; // 3

    79         d[0] = d[1]; // 4

    80         d[1] = d[2]; // 2

    81         d[2] = d[3]; // 3

    82         d[3] = d[0]; // 4

    84         d[0] = d[1]; // 2

    85         d[1] = d[2]; // 3

    86         d[2] = d[3]; // 4

    87         d[3] = d[0]; // 2

    89         d[0] = d[1]; // 3

    90         d[1] = d[2]; // 4

    91         d[2] = d[3]; // 2

    92         d[3] = d[0]; // 3

    93       }

    95       // try to defeat dead code elimination

    96       if (d[0] == d[1]) {

    97         System.out.println("test failed: iter=" + iter + "  i=" + i + " d[] = { " + d[0] + ", " + d[1] + ", " + d[2] + ", " + d[3] + " } ");

    98         System.exit(97);

    99       }

   100     }

   101     return d[3];

   102   }

   104 }

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

test/compiler/7044738/Test7044738.java@dbb05f6d93c4

test/compiler/7044738/Test7044738.java