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/*
* Copyright (c) 2020, Red Hat, Inc. 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 8244663
* @summary Shenandoah: C2 assertion fails in Matcher::collect_null_checks
* @key gc
* @requires vm.flavor == "server"
* @requires vm.gc.Shenandoah & !vm.graal.enabled
*
* @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:-TieredCompilation -XX:-BackgroundCompilation -XX:-UseOnStackReplacement
* -XX:CompileCommand=dontinline,TestShenandoahCmpPAfterCall::not_inlined TestShenandoahCmpPAfterCall
*
*/
public class TestShenandoahCmpPAfterCall {
private static Object field1 = new Object();
private static Object field2 = new Object();
private static Object o3;
private static volatile int barrier;
public static void main(String[] args) {
for (int i = 0; i < 20_000; i++) {
test();
}
}
private static void test() {
Object o1 = null;
Object o2 = field2;
try {
not_inlined();
o1 = field1;
if (o1 == o2) {
}
} catch (Exception1 ex1) {
o1 = field1;
if (o1 == o2) {
}
}
barrier = 42;
if (o1 == o2) {
}
}
static int count = 0;
private static void not_inlined() throws Exception1 {
count++;
if ((count % 100) == 0) {
throw new Exception1();
}
}
private static class Exception1 extends Exception {
}
}
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