Mercurial > hg > truffle
annotate test/compiler/regalloc/C1ObjectSpillInLogicOp.java @ 18408:2c3666f44855
Truffle: initial commit of object API implementation
| author | Andreas Woess <andreas.woess@jku.at> |
|---|---|
| date | Tue, 18 Nov 2014 23:19:43 +0100 |
| parents | ad45ebfba060 |
| children |
| rev | line source |
|---|---|
| 13044 | 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 8027751 | |
| 27 * @summary C1 crashes generating G1 post-barrier in Unsafe.getAndSetObject() intrinsic because of the new value spill | |
| 28 * @run main/othervm -XX:+UseG1GC C1ObjectSpillInLogicOp | |
| 29 * | |
| 30 * G1 barriers use logical operators (xor) on T_OBJECT mixed with T_LONG or T_INT. | |
| 31 * The current implementation of logical operations on x86 in C1 doesn't allow for long operands to be on stack. | |
| 32 * There is a special code in the register allocator that forces long arguments in registers on x86. However T_OBJECT | |
| 33 * can be spilled just fine, and in that case the xor emission will fail. | |
| 34 */ | |
| 35 | |
| 36 import java.util.concurrent.atomic.*; | |
|
13443
ad45ebfba060
8028122: [TESTBUG] compiler/regalloc/C1ObjectSpillInLogicOp.java
iignatyev
parents:
13044
diff
changeset
|
37 |
|
ad45ebfba060
8028122: [TESTBUG] compiler/regalloc/C1ObjectSpillInLogicOp.java
iignatyev
parents:
13044
diff
changeset
|
38 public class C1ObjectSpillInLogicOp { |
|
ad45ebfba060
8028122: [TESTBUG] compiler/regalloc/C1ObjectSpillInLogicOp.java
iignatyev
parents:
13044
diff
changeset
|
39 public static void main(String[] args) { |
| 13044 | 40 AtomicReferenceArray<Integer> x = new AtomicReferenceArray(128); |
| 41 Integer y = new Integer(0); | |
| 42 for (int i = 0; i < 50000; i++) { | |
| 43 x.getAndSet(i % x.length(), y); | |
| 44 } | |
| 45 } | |
| 46 } |