jdk-24/test/hotspot/jtreg/compiler/c2/TestNotifyCastToXor.java
2023-10-20 10:44:58 +00:00

58 lines
1.8 KiB
Java

/*
* Copyright (c) 2023, 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 8318049
* @summary Test that xor nodes are properly notified when constraint casts change.
* @run main/othervm -Xcomp -XX:-TieredCompilation -XX:CompileOnly=compiler.c2.TestNotifyCastToXor::test
-XX:+IgnoreUnrecognizedVMOptions -XX:VerifyIterativeGVN=10 compiler.c2.TestNotifyCastToXor
*/
package compiler.c2;
public class TestNotifyCastToXor {
public static long longField = 0L;
public static void test() {
int ind = -15;
ind %= ind;
for (int i = 0; i < 40; ++i) {
int j = 1;
do {
ind ^= (int)longField;
// Dead loop
for (int k = 1; k < 1; k++) {
}
} while (j++ < 10);
}
}
public static void main(String[] args) {
test();
}
}