diff -r 000000000000 -r f90c822e73f8 test/compiler/6837094/Test.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/compiler/6837094/Test.java Wed Apr 27 01:25:04 2016 +0800 @@ -0,0 +1,94 @@ +/* + * 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 { + Factory Zero = new Factory() { + public Child0[] getArray() { return new Child0[1]; } + }; + + Factory One = new Factory() { + 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 void collectIs( + Factory factory, Set s) { + for (I i : factory.getArray()) { + try { + s.add(i); + } catch (Exception e) { + } + } + } + + static public void main(String argv[]) { + Set 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 { +}