mirror of
https://github.com/openjdk/jdk.git
synced 2026-02-01 05:58:29 +00:00
65 lines
2.2 KiB
Java
65 lines
2.2 KiB
Java
/*
|
|
* Copyright (c) 2025, 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 8347718
|
|
* @summary Check that Reduce Allocation Merges correctly handle "NE" pointer comparisons.
|
|
* @requires vm.flagless & vm.compiler2.enabled & vm.opt.final.EliminateAllocations
|
|
* @run main/othervm -XX:CompileCommand=compileonly,*TestReduceAllocationAndPointerComparisons*::*
|
|
* -XX:CompileCommand=dontinline,*TestReduceAllocationAndPointerComparisons*::*
|
|
* -XX:-TieredCompilation -Xcomp
|
|
* compiler.c2.TestReduceAllocationAndPointerComparisons
|
|
* @run main compiler.c2.TestReduceAllocationAndPointerComparisons
|
|
*/
|
|
|
|
package compiler.c2;
|
|
|
|
public class TestReduceAllocationAndPointerComparisons {
|
|
public static void main(String[] args) {
|
|
for (int i=0; i<50000; i++) {
|
|
if (test(true) == false) {
|
|
throw new RuntimeException("Unexpected result.");
|
|
}
|
|
}
|
|
}
|
|
|
|
public static boolean test(boolean b) {
|
|
MyClass obj = new MyClass();
|
|
|
|
for (int i = 0; i < 100_000; ++i) { }
|
|
|
|
obj = b ? obj : new MyClass();
|
|
obj = b ? obj : new MyClass();
|
|
|
|
if (obj == null) {
|
|
return false;
|
|
}
|
|
|
|
return b;
|
|
}
|
|
|
|
static class MyClass {
|
|
}
|
|
}
|