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comparison test/compiler/types/TestSpeculationFailedHigherEqual.java @ 18041:52b4284cb496

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Merge with jdk8u20-b26
author Gilles Duboscq <duboscq@ssw.jku.at>
date Wed, 15 Oct 2014 16:02:50 +0200
parents 45b0159f30f2
children 92aa6797d639
comparison
equal deleted inserted replaced
17606:45d7b2c7029d 18041:52b4284cb496
1 /*
2 * Copyright (c) 2014, Oracle and/or its affiliates. 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
24 /*
25 * @test
26 * @bug 8027422
27 * @summary type methods shouldn't always operate on speculative part
28 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:TypeProfileLevel=222 -XX:+UseTypeSpeculation -XX:-BackgroundCompilation TestSpeculationFailedHigherEqual
29 *
30 */
31
32 public class TestSpeculationFailedHigherEqual {
33
34 static class A {
35 void m() {}
36 int i;
37 }
38
39 static class C extends A {
40 }
41
42 static C c;
43
44 static A m1(A a, boolean cond) {
45 // speculative type for a is C not null
46 if (cond ) {
47 a = c;
48 }
49 // speculative type for a is C (may be null)
50 int i = a.i;
51 return a;
52 }
53
54 static public void main(String[] args) {
55 C c = new C();
56 TestSpeculationFailedHigherEqual.c = c;
57 for (int i = 0; i < 20000; i++) {
58 m1(c, i%2 == 0);
59 }
60
61 System.out.println("TEST PASSED");
62 }
63 }