1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*
* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @key stress randomness
* @bug 8280123
* @run main/othervm -Xcomp -XX:-TieredCompilation
* -XX:CompileCommand=compileonly,compiler.c2.TestCMoveInfiniteGVN::test
* -XX:+UnlockDiagnosticVMOptions -XX:+StressIGVN -XX:StressSeed=43739875
* compiler.c2.TestCMoveInfiniteGVN
* @run main/othervm -Xcomp -XX:-TieredCompilation
* -XX:CompileCommand=compileonly,compiler.c2.TestCMoveInfiniteGVN::test
* -XX:+UnlockDiagnosticVMOptions -XX:+StressIGVN
* compiler.c2.TestCMoveInfiniteGVN
*/
package compiler.c2;
public class TestCMoveInfiniteGVN {
static int test(boolean b, int i) {
int iArr[] = new int[2];
double d = Math.max(i, i);
for (int i1 = 1; i1 < 2; i1++) {
if (i1 != 0) {
return (b ? 1 : 0); // CMoveI
}
for (int i2 = 1; i2 < 2; i2++) {
switch (i2) {
case 1: d -= Math.max(i1, i2); break;
}
d -= iArr[i1 - 1];
}
}
return 0;
}
static void test() {
test(true, 234);
}
public static void main(String[] strArr) {
test(); // compilation, then nmethod invalidation during execution
test(); // trigger crashing recompilation
}
}
|
