jdk8-mips64-public/hotspot: test/compiler/6837094/Test.java@fb9d124d9192 (annotated)

test/compiler/6837094/Test.java@fb9d124d9192 (annotated)

test/compiler/6837094/Test.java

Wed, 21 May 2014 10:56:41 -0700

author: katleman
date: Wed, 21 May 2014 10:56:41 -0700
changeset 6672: fb9d124d9192
parent 1907: c18cbe5936b8
child 6876: 710a3c8b516e
permissions: -rw-r--r--

Added tag jdk8u20-b15 for changeset 8c785f9bde6f

 /*
  * Copyright 2009 Google Inc.  All Rights Reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 /**
  * @test
  * @bug 6837094
  * @summary False positive for "meet not symmetric" failure
  *
  * @run main/othervm -Xbatch -XX:CompileOnly=Test.collectIs,Test$Factory$1.getArray,Test$Factory$2.getArray Test
  */
 import java.util.Set;
 import java.util.HashSet;
 public class Test {
   private interface Factory<M extends Interface> {
     Factory<Child0> Zero = new Factory<Child0>() {
       public Child0[] getArray() { return new Child0[1]; }
     };
     Factory<Child1> One = new Factory<Child1>() {
       public Child1[] getArray() { return new Child1[1]; }
     };
     M[] getArray();
   }
   /**
    * C2 asserts when compiling this method. Bimorphic inlining happens at
    * getArray call site. A Phi in the catch block tries to join the meet type
    * from he inline site (Parent[]) with the type expected by CI (Interface[]).
    *
    * C2 throws an assert when it doesn't need to.
    */
   private static <I extends Interface> void collectIs(
       Factory<I> factory, Set<Interface> s) {
     for (I i : factory.getArray()) {
       try {
         s.add(i);
       } catch (Exception e) {
       }
     }
   }
   static public void main(String argv[]) {
     Set<Interface> s = new HashSet();
     for (int i = 0; i < 25000; i++) {
       collectIs(Factory.Zero, s);
       collectIs(Factory.One, s);
     }
   }
 }
 /**
  * Establish necessary class hierarchy
  */
 interface Interface {
 }
 class Parent {
 }
 class Child0 extends Parent implements Interface {
 }
 class Child1 extends Parent implements Interface {
 }
 class Child2 extends Parent implements Interface {
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/compiler/6837094/Test.java@fb9d124d9192 (annotated)

test/compiler/6837094/Test.java