1/*
2 * Copyright (c) 2015, 2016, 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 8073154
27 * @run main/othervm -XX:TypeProfileLevel=020
28 *                   -XX:CompileCommand=compileonly,compiler.print.TestProfileReturnTypePrinting::testMethod
29 *                   -XX:+IgnoreUnrecognizedVMOptions -XX:+PrintLIR
30 *                   compiler.print.TestProfileReturnTypePrinting
31 * @summary Verify that c1's LIR that contains ProfileType node could be dumped
32 *          without a crash disregard to an exact class knowledge.
33 */
34
35package compiler.print;
36
37public class TestProfileReturnTypePrinting {
38    private static final int ITERATIONS = 1_000_000;
39
40    public static void main(String args[]) {
41        for (int i = 0; i < ITERATIONS; i++) {
42            TestProfileReturnTypePrinting.testMethod(i);
43        }
44    }
45
46    private static int testMethod(int i) {
47        return TestProfileReturnTypePrinting.foo().hashCode()
48                + TestProfileReturnTypePrinting.bar(i).hashCode();
49    }
50
51    /* Exact class of returned value is known statically. */
52    private static B foo() {
53        return new B();
54    }
55
56    /* Exact class of returned value is not known statically. */
57    private static Object bar(int i) {
58        if (i % 2 == 0) {
59            return new A();
60        } else {
61            return new B();
62        }
63    }
64
65    private static class A {
66    }
67
68    private static class B extends A {
69    }
70}
71