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comparison test/compiler/c2/TestReplacedNodesOSR.java @ 24205:b1f3fbe39975

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8175097: [TESTBUG] 8174164 fix missed the test Reviewed-by: kvn
author roland
date Thu, 16 Feb 2017 15:14:44 -0800
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24204:3ff8d0b5a04b 24205:b1f3fbe39975
1 /*
2 * Copyright (c) 2017, Red Hat, 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 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 8174164
27 * @summary SafePointNode::_replaced_nodes breaks with irreducible loops
28 * @run main/othervm -XX:-BackgroundCompilation TestReplacedNodesOSR
29 *
30 */
31
32 public class TestReplacedNodesOSR {
33
34 static Object dummy;
35
36 static interface I {
37 }
38
39 static class A implements I {
40 }
41
42 static final class MyException extends Exception {
43 }
44
45 static final A obj = new A();
46 static I static_field() { return obj; }
47
48 // When OSR compiled, this method has an irreducible loop
49 static void test(int v, MyException e) {
50 int i = 0;
51 for (;;) {
52 if (i == 1000) {
53 break;
54 }
55 try {
56 if ((i%2) == 0) {
57 int j = 0;
58 for (;;) {
59 j++;
60 if (i+j != v) {
61 if (j == 1000) {
62 break;
63 }
64 } else {
65 A a = (A)static_field();
66 // replaced node recorded here
67 throw e;
68 }
69 }
70 }
71 } catch(MyException ex) {
72 }
73 i++;
74 // replaced node applied on return of the method
75 // replaced node used here
76 dummy = static_field();
77 }
78 }
79
80
81 static public void main(String[] args) {
82 for (int i = 0; i < 1000; i++) {
83 test(1100, new MyException());
84 }
85 }
86 }