Mercurial > hg > truffle
comparison test/compiler/types/TestSpeculationFailedHigherEqual.java @ 14383:5ec7dace41a6
8027422: assert(_gvn.type(obj)->higher_equal(tjp)) failed: cast_up is no longer needed
Summary: type methods shouldn't always operate on speculative part
Reviewed-by: kvn, twisti
author | roland |
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date | Fri, 24 Jan 2014 09:31:53 +0100 |
parents | |
children | 45b0159f30f2 |
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14272:757ec609d8d5 | 14383:5ec7dace41a6 |
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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:+UnlockExperimentalVMOptions -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 } |