102 lines
2.9 KiB
Java
102 lines
2.9 KiB
Java
/*
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* Copyright (c) 2019, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8231620
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* @summary assert(bol->is_Bool()) crash during split if due to FastLockNode
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*
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* @run main/othervm -XX:-TieredCompilation -XX:-BackgroundCompilation -XX:-UseOnStackReplacement SplitIfSharedFastLockBehindCastPP
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*/
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public class SplitIfSharedFastLockBehindCastPP {
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private static boolean field;
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private static A obj_field;
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public static void main(String[] args) {
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A lock = new A();
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obj_field = lock;
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for (int i = 0; i < 20_000; i++) {
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test1(true, lock);
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test1(false, lock);
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test2(true);
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test2(false);
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}
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}
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private static void test1(boolean flag, Object obj) {
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if (obj == null) {
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}
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boolean flag2;
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if (flag) {
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flag2 = true;
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} else {
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flag2 = false;
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obj = obj_field;
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}
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// This loop will be unswitched. The condition becomes candidate for split if
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for (int i = 0; i < 100; i++) {
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if (flag2) {
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field = true;
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} else {
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field = false;
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}
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synchronized (obj) {
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field = true;
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}
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}
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}
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private static Object test2(boolean flag) {
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int integer;
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if (flag) {
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field = true;
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integer = 1;
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} else {
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field = false;
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integer = 2;
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}
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Object obj = integer;
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// This loop will be unswitched. The condition becomes candidate for split if
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for (int i = 0; i < 100; i++) {
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if (integer == 1) {
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field = true;
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} else {
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field = false;
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}
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synchronized (obj) {
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field = true;
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}
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}
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return obj;
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}
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private static final class A {
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}
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}
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