Mercurial > hg > truffle
comparison test/compiler/8007294/Test8007294.java @ 8116:6931f425c517
8007294: ReduceFieldZeroing doesn't check for dependent load and can lead to incorrect execution
Summary: InitializeNode::can_capture_store() must check that the captured store doesn't overwrite a memory location that is loaded before the store.
Reviewed-by: kvn
author | roland |
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date | Mon, 25 Feb 2013 14:13:04 +0100 |
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8097:be1fbee20765 | 8116:6931f425c517 |
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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 8007294 | |
27 * @summary ReduceFieldZeroing doesn't check for dependent load and can lead to incorrect execution | |
28 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+AlwaysIncrementalInline -XX:-UseOnStackReplacement -XX:-BackgroundCompilation Test8007294 | |
29 * | |
30 */ | |
31 | |
32 public class Test8007294 { | |
33 | |
34 int i1; | |
35 int i2; | |
36 | |
37 Test8007294(int i1, int i2) { | |
38 this.i1 = i1; | |
39 this.i2 = i2; | |
40 } | |
41 | |
42 static int m(int v) { | |
43 return v; | |
44 } | |
45 | |
46 static Test8007294 test1() { | |
47 Test8007294 obj = new Test8007294(10, 100); | |
48 int v1 = obj.i1; | |
49 | |
50 int v3 = m(v1); | |
51 int v2 = obj.i2; | |
52 obj.i2 = v3; | |
53 obj.i1 = v2; | |
54 | |
55 return obj; | |
56 } | |
57 | |
58 static int test2(int i) { | |
59 int j = 0; | |
60 if (i > 0) { | |
61 j = 1; | |
62 } | |
63 | |
64 int[] arr = new int[10]; | |
65 arr[0] = 1; | |
66 arr[1] = 2; | |
67 int v1 = arr[j]; | |
68 arr[0] = 3; | |
69 arr[1] = 4; | |
70 | |
71 return v1; | |
72 } | |
73 | |
74 static public void main(String[] args) { | |
75 boolean failed = false; | |
76 for (int i = 0; i < 20000; i++) { | |
77 Test8007294 obj = test1(); | |
78 if (obj.i1 != 100 || obj.i2 != 10) { | |
79 System.out.println("FAILED test1 obj.i1 = " + obj.i1 +", obj.i2 = " + obj.i2); | |
80 failed = true; | |
81 break; | |
82 } | |
83 } | |
84 for (int i = 0; i < 20000; i++) { | |
85 int res = test2(1); | |
86 if (res != 2) { | |
87 System.out.println("FAILED test2 = " + res); | |
88 failed = true; | |
89 break; | |
90 } | |
91 } | |
92 if (failed) { | |
93 System.exit(97); | |
94 } else { | |
95 System.out.println("PASSED"); | |
96 } | |
97 } | |
98 } |