jdk8-mips64-public/hotspot: test/compiler/6837094/Test.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 2009 Google 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  */

    25 /**

    26  * @test

    27  * @bug 6837094

    28  * @summary False positive for "meet not symmetric" failure

    29  *

    30  * @run main/othervm -Xbatch -XX:CompileOnly=Test.collectIs,Test$Factory$1.getArray,Test$Factory$2.getArray Test

    31  */

    33 import java.util.Set;

    34 import java.util.HashSet;

    36 public class Test {

    38   private interface Factory<M extends Interface> {

    39     Factory<Child0> Zero = new Factory<Child0>() {

    40       public Child0[] getArray() { return new Child0[1]; }

    41     };

    43     Factory<Child1> One = new Factory<Child1>() {

    44       public Child1[] getArray() { return new Child1[1]; }

    45     };

    47     M[] getArray();

    48   }

    50   /**

    51    * C2 asserts when compiling this method. Bimorphic inlining happens at

    52    * getArray call site. A Phi in the catch block tries to join the meet type

    53    * from he inline site (Parent[]) with the type expected by CI (Interface[]).

    54    *

    55    * C2 throws an assert when it doesn't need to.

    56    */

    57   private static <I extends Interface> void collectIs(

    58       Factory<I> factory, Set<Interface> s) {

    59     for (I i : factory.getArray()) {

    60       try {

    61         s.add(i);

    62       } catch (Exception e) {

    63       }

    64     }

    65   }

    67   static public void main(String argv[]) {

    68     Set<Interface> s = new HashSet();

    70     for (int i = 0; i < 25000; i++) {

    71       collectIs(Factory.Zero, s);

    72       collectIs(Factory.One, s);

    73     }

    74   }

    75 }

    77 /**

    78  * Establish necessary class hierarchy

    79  */

    81 interface Interface {

    82 }

    84 class Parent {

    85 }

    87 class Child0 extends Parent implements Interface {

    88 }

    90 class Child1 extends Parent implements Interface {

    91 }

    93 class Child2 extends Parent implements Interface {

    94 }

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

test/compiler/6837094/Test.java@dbb05f6d93c4

test/compiler/6837094/Test.java