Mercurial > hg > truffle
annotate test/compiler/types/TestMeetTopArrayExactConstantArray.java @ 14777:10c6700908ef
mx: removed use of exclusion filter files from findbugs command
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 26 Mar 2014 22:20:23 +0100 |
parents | 92aa6797d639 |
children |
rev | line source |
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14228 | 1 /* |
2 * Copyright (c) 2013, 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 8027571 | |
27 * @summary meet of TopPTR exact array with constant array is not symmetric | |
14726
92aa6797d639
Backed out merge changeset: b51e29501f30
Doug Simon <doug.simon@oracle.com>
parents:
14681
diff
changeset
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28 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-UseOnStackReplacement -XX:TypeProfileLevel=222 -XX:+UnlockExperimentalVMOptions -XX:+UseTypeSpeculation -XX:-BackgroundCompilation TestMeetTopArrayExactConstantArray |
14228 | 29 * |
30 */ | |
31 | |
32 public class TestMeetTopArrayExactConstantArray { | |
33 | |
34 static class A { | |
35 } | |
36 | |
37 static class B { | |
38 } | |
39 | |
40 static class C extends A { | |
41 } | |
42 | |
43 static class D extends C { | |
44 } | |
45 | |
46 final static B[] b = new B[10]; | |
47 | |
48 static void m0(Object[] o) { | |
49 if (o.getClass() == Object[].class) { | |
50 } | |
51 } | |
52 | |
53 static void m1(Object[] o, boolean cond) { | |
54 if (cond) { | |
55 o = b; | |
56 } | |
57 m0(o); | |
58 } | |
59 | |
60 static void m2(Object[] o, boolean cond1, boolean cond2) { | |
61 if (cond1) { | |
62 m1(o, cond2); | |
63 } | |
64 } | |
65 | |
66 static void m3(C[] o, boolean cond1, boolean cond2, boolean cond3) { | |
67 if (cond1) { | |
68 m2(o, cond2, cond3); | |
69 } | |
70 } | |
71 | |
72 static public void main(String[] args) { | |
73 A[] a = new A[10]; | |
74 D[] d = new D[10]; | |
75 Object[] o = new Object[10]; | |
76 for (int i = 0; i < 5000; i++) { | |
77 // record in profiling that the if in m0 succeeds | |
78 m0(o); | |
79 // record some profiling for m2 and m1 | |
80 m2(a, true, (i%2) == 0); | |
81 // record some profiling for m3 and conflicting profile for m2 | |
82 m3(d, true, false, (i%2) == 0); | |
83 } | |
84 | |
85 // get m3 compiled. The if in m0 will be optimized because of argument profiling in m3 | |
86 C[] c = new C[10]; | |
87 for (int i = 0; i < 20000; i++) { | |
88 m3(c, true, false, (i%2) == 0); | |
89 } | |
90 // make m3 not entrant and the if in m0 fail | |
91 m3(c, true, true, false); | |
92 m3(c, true, true, false); | |
93 m3(c, true, true, false); | |
94 m3(c, true, true, false); | |
95 | |
96 // make m3 recompile, this time with if the not optimized | |
97 // on entry to m3, argument o is of type C[], profiled C[] | |
98 // on entry to m1, argument o is of type C[], speculative C[] exact, profiled A[]. Speculative becomes AnyNull | |
99 // after the if in m1, speculative type of o becomes constant from final field b | |
100 // the true if branch in m0 does a join between the type of o of speculative type constant from final field b and exact klass Object[] | |
101 for (int i = 0; i < 20000; i++) { | |
102 m3(c, true, false, (i%2) == 0); | |
103 } | |
104 | |
105 System.out.println("TEST PASSED"); | |
106 } | |
107 } |