author | jwilhelm |
Thu, 26 Feb 2015 21:00:03 +0100 (2015-02-26) | |
changeset 29324 | 8672c9d7ae94 |
parent 26176 | cc5975228236 |
child 40059 | c2304140ed64 |
permissions | -rw-r--r-- |
26176
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
1 |
/* |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
2 |
* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
4 |
* |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
5 |
* This code is free software; you can redistribute it and/or modify it |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
6 |
* under the terms of the GNU General Public License version 2 only, as |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
7 |
* published by the Free Software Foundation. |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
8 |
* |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
9 |
* This code is distributed in the hope that it will be useful, but WITHOUT |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
10 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
11 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
12 |
* version 2 for more details (a copy is included in the LICENSE file that |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
13 |
* accompanied this code). |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
14 |
* |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
15 |
* You should have received a copy of the GNU General Public License version |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
16 |
* 2 along with this work; if not, write to the Free Software Foundation, |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
17 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
18 |
* |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
19 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
20 |
* or visit www.oracle.com if you need additional information or have any |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
21 |
* questions. |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
22 |
*/ |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
23 |
|
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
24 |
/* |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
25 |
* @test TestMemBarAcquire |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
26 |
* @bug 8048879 |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
27 |
* @summary "Tests optimization of MemBarAcquireNodes" |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
28 |
* @run main/othervm -XX:-TieredCompilation -XX:-BackgroundCompilation TestMemBarAcquire |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
29 |
*/ |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
30 |
public class TestMemBarAcquire { |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
31 |
private volatile static Object defaultObj = new Object(); |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
32 |
private Object obj; |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
33 |
|
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
34 |
public TestMemBarAcquire(Object param) { |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
35 |
// Volatile load. MemBarAcquireNode is added after the |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
36 |
// load to prevent following loads from floating up past. |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
37 |
// StoreNode is added to store result of load in 'obj'. |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
38 |
this.obj = defaultObj; |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
39 |
// Overrides 'obj' and therefore makes previous StoreNode |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
40 |
// and the corresponding LoadNode useless. However, the |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
41 |
// LoadNode is still connected to the MemBarAcquireNode |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
42 |
// that should now release the reference. |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
43 |
this.obj = param; |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
44 |
} |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
45 |
|
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
46 |
public static void main(String[] args) throws Exception { |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
47 |
// Make sure TestMemBarAcquire::<init> is compiled |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
48 |
for (int i = 0; i < 100000; ++i) { |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
49 |
TestMemBarAcquire p = new TestMemBarAcquire(new Object()); |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
50 |
} |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
51 |
} |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
52 |
} |
cc5975228236
8048879: "unexpected yanked node" opto/postaloc.cpp:139
thartmann
parents:
diff
changeset
|
53 |