820
|
1 /*
|
|
2 * Copyright 2009 Sun Microsystems, 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
20 * CA 95054 USA or visit www.sun.com if you need additional information or
|
|
21 * have any questions.
|
|
22 *
|
|
23 */
|
|
24
|
|
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 */
|
|
32
|
|
33 import java.util.Set;
|
|
34 import java.util.HashSet;
|
|
35
|
|
36 public class Test {
|
|
37
|
|
38 private interface Factory<M extends Interface> {
|
|
39 Factory<Child0> Zero = new Factory<Child0>() {
|
|
40 public Child0[] getArray() { return new Child0[1]; }
|
|
41 };
|
|
42
|
|
43 Factory<Child1> One = new Factory<Child1>() {
|
|
44 public Child1[] getArray() { return new Child1[1]; }
|
|
45 };
|
|
46
|
|
47 M[] getArray();
|
|
48 }
|
|
49
|
|
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 }
|
|
66
|
|
67 static public void main(String argv[]) {
|
|
68 Set<Interface> s = new HashSet();
|
|
69
|
|
70 for (int i = 0; i < 25000; i++) {
|
|
71 collectIs(Factory.Zero, s);
|
|
72 collectIs(Factory.One, s);
|
|
73 }
|
|
74 }
|
|
75 }
|
|
76
|
|
77 /**
|
|
78 * Establish necessary class hierarchy
|
|
79 */
|
|
80
|
|
81 interface Interface {
|
|
82 }
|
|
83
|
|
84 class Parent {
|
|
85 }
|
|
86
|
|
87 class Child0 extends Parent implements Interface {
|
|
88 }
|
|
89
|
|
90 class Child1 extends Parent implements Interface {
|
|
91 }
|
|
92
|
|
93 class Child2 extends Parent implements Interface {
|
|
94 }
|