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
|
/*
* Copyright (c) 2024, 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 8331033
* @summary EA fails with "EA unexpected CallLeaf unsafe_setmemory" after JDK-8329331
* @requires vm.compMode != "Xint"
*
* @run main/othervm -Xbatch -XX:-TieredCompilation Test8331033
*
*/
import java.lang.foreign.*;
class MyClass {
public int field1;
public int field2;
public int field3;
public int field4;
public MyClass(int field1, int field2, int field3, int field4) {
this.field1 = field1;
this.field2 = field2;
this.field3 = field3;
this.field4 = field4;
}
}
public class Test8331033 {
public static int micro1(int ctr) {
// non-escaping object, EA sweepable, values are forwarded to users, additional
// bookeeping (SafepointScalarObjectNode) for eliminated objects at SafePoints
// With -XX:-Inline, constructor will not be inlined and hence AllocateNode are
// considered escapable.
MyClass obj = new MyClass(10, 20, 30, 40);
return obj.field1 * ctr + obj.field2 + obj.field3 + obj.field4;
}
public static int micro2(int ctr) {
// small known length arrays of size less than
// -XX:+EliminateAllocationArraySizeLimit are eliminatable if non-escaping.
int[] arr = new int[5];
arr[0] = 10;
arr[1] = 10;
arr[2] = 10;
arr[3] = 10;
arr[4] = 10;
// value forwarding will forward constants to expressions.
return ctr * arr[0] + arr[1] + arr[2] + arr[3] + arr[4];
}
public static int micro3(int ctr) {
int[] arr = new int[8];
MemorySegment ms = MemorySegment.ofArray(arr);
ms.fill((byte) 10);
return ctr * ms.get(ValueLayout.JAVA_INT, 12) +
ms.get(ValueLayout.JAVA_INT, 16) +
ms.get(ValueLayout.JAVA_INT, 20) +
ms.get(ValueLayout.JAVA_INT, 24);
}
public static void main(String[] args) {
{
int res = 0;
for (int i = 0; i < 100000; i++) {
res += micro1(i);
}
System.out.println("[res] " + res);
}
{
int res = 0;
for (int i = 0; i < 100000; i++) {
res += micro2(i);
}
System.out.println("[res] " + res);
}
{
int res = 0;
for (int i = 0; i < 100000; i++) {
res += micro3(i);
}
System.out.println("[res] " + res);
}
}
}
|
