83 lines
2.8 KiB
Java
83 lines
2.8 KiB
Java
/*
|
|
* 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 8324969
|
|
* @summary C2 incorrectly marks unbalanced (after coarsened locks were eliminated)
|
|
* nested locks for elimination.
|
|
* @requires vm.compMode != "Xint"
|
|
* @run main/othervm -XX:-BackgroundCompilation TestCoarsenedAndNestedLocksElimination
|
|
*/
|
|
|
|
public class TestCoarsenedAndNestedLocksElimination {
|
|
|
|
public static void main(String[] strArr) {
|
|
for (int i = 0; i < 12000; ++i) {
|
|
test1(-1);
|
|
test2(-1);
|
|
}
|
|
}
|
|
|
|
static synchronized int methodA(int var) {
|
|
return var;
|
|
}
|
|
|
|
static synchronized int methodB(int var) {
|
|
return var;
|
|
}
|
|
|
|
static int varA = 0;
|
|
static int varB = 0;
|
|
|
|
static void test1(int var) {
|
|
synchronized (TestNestedLocksElimination.class) {
|
|
for (int i2 = 0; i2 < 3; i2++) { // Fully unrolled
|
|
varA = methodA(i2); // Nested synchronized methods also use
|
|
varB = i2 + methodB(var); // TestNestedLocksElimination.class for lock
|
|
}
|
|
}
|
|
TestNestedLocksElimination t = new TestNestedLocksElimination(); // Triggers EA
|
|
}
|
|
|
|
static boolean test2(int var) {
|
|
synchronized (TestNestedLocksElimination.class) {
|
|
for (int i1 = 0; i1 < 100; i1++) {
|
|
switch (42) {
|
|
case 42:
|
|
short[] sArr = new short[256]; // Big enough to avoid scalarization checks
|
|
case 50:
|
|
for (int i2 = 2; i2 < 8; i2 += 2) { // Fully unrolled
|
|
for (int i3 = 1;;) {
|
|
int var1 = methodA(i2);
|
|
int var2 = i2 + methodB(i3);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return var > 0;
|
|
}
|
|
}
|