| /* |
| * 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 { |
| } |