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
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/*
* Copyright (c) 2020, 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
* @bug 8257594
* @summary Test that failing checkcast does not trigger repeated recompilation until cutoff is hit.
* @requires vm.compiler2.enabled
* @modules java.base/jdk.internal.misc
* @library /test/lib
* @build sun.hotspot.WhiteBox
* @run driver ClassFileInstaller sun.hotspot.WhiteBox
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
* -Xbatch -XX:CompileCommand=dontinline,compiler.uncommontrap.TestNullAssertAtCheckCast::test*
* -XX:CompileCommand=inline,compiler.uncommontrap.TestNullAssertAtCheckCast::cast
* -XX:CompileCommand=inline,compiler.uncommontrap.TestNullAssertAtCheckCast::store
* compiler.uncommontrap.TestNullAssertAtCheckCast
*/
package compiler.uncommontrap;
import sun.hotspot.WhiteBox;
import java.lang.reflect.Method;
public class TestNullAssertAtCheckCast {
private static final WhiteBox WB = WhiteBox.getWhiteBox();
private static final int COMP_LEVEL_FULL_OPTIMIZATION = 4;
static Long cast(Object val) {
return (Long)val;
}
static void test1() {
try {
// Always fails
cast(new Integer(42));
} catch (ClassCastException cce) {
// Ignored
}
}
static void test2(Integer val) {
try {
// Always fails
cast(val);
} catch (ClassCastException cce) {
// Ignored
}
}
static void store(Object[] array, Object val) {
array[0] = val;
}
static void test3() {
try {
// Always fails
store(new Long[1], new Integer(42));
} catch (ArrayStoreException cce) {
// Ignored
}
}
static void test4(Integer val) {
try {
// Always fails
store(new Long[1], val);
} catch (ArrayStoreException cce) {
// Ignored
}
}
public static void main(String[] args) throws Exception {
for (int i = 0; i < 1_000_000; ++i) {
test1();
test2((i % 2 == 0) ? null : 42);
test3();
test4((i % 2 == 0) ? null : 42);
}
Method method = TestNullAssertAtCheckCast.class.getDeclaredMethod("test1");
if (!WB.isMethodCompilable(method, COMP_LEVEL_FULL_OPTIMIZATION, false)) {
throw new RuntimeException("TestNullAssertAtCheckCast::test1 not compilable");
}
method = TestNullAssertAtCheckCast.class.getDeclaredMethod("test2", Integer.class);
if (!WB.isMethodCompilable(method, COMP_LEVEL_FULL_OPTIMIZATION, false)) {
throw new RuntimeException("TestNullAssertAtCheckCast::test2 not compilable");
}
method = TestNullAssertAtCheckCast.class.getDeclaredMethod("test3");
if (!WB.isMethodCompilable(method, COMP_LEVEL_FULL_OPTIMIZATION, false)) {
throw new RuntimeException("TestNullAssertAtCheckCast::test3 not compilable");
}
method = TestNullAssertAtCheckCast.class.getDeclaredMethod("test4", Integer.class);
if (!WB.isMethodCompilable(method, COMP_LEVEL_FULL_OPTIMIZATION, false)) {
throw new RuntimeException("TestNullAssertAtCheckCast::test4 not compilable");
}
}
}
|
