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/*
* 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 8330247
* @summary Check that Reduce Allocation Merges doesn't try to reduce non-exact allocations.
* @library /test/lib /
* @modules java.base/jdk.internal.misc
* @requires vm.debug & vm.flagless & vm.compiler2.enabled & vm.opt.final.EliminateAllocations
* @run main/othervm -XX:CompileCommand=compileonly,*TestReduceAllocationAndNonExactAllocate*::test
* -XX:CompileCommand=compileonly,*::allocateInstance
* -XX:CompileCommand=dontinline,*TestReduceAllocationAndNonExactAllocate*::*
* -XX:+UnlockDiagnosticVMOptions
* -XX:+TraceReduceAllocationMerges
* -XX:-TieredCompilation
* -Xbatch
* -Xcomp
* compiler.c2.TestReduceAllocationAndNonExactAllocate
*/
package compiler.c2;
import jdk.internal.misc.Unsafe;
public class TestReduceAllocationAndNonExactAllocate {
private static final Unsafe UNSAFE = Unsafe.getUnsafe();
public static void main(String[] args) {
try {
if (test(20, Integer.class) != 2032) {
throw new RuntimeException("Expected the value to be 2032.");
}
}
catch (InstantiationException e) {
e.printStackTrace();
}
}
public static int test(int val, Class<?> c) throws InstantiationException {
Object p = null;
if (val == 20) {
p = UNSAFE.allocateInstance(c);
}
dummy();
return p != null ? 2032 : 3242;
}
static int dummy() { return 42; }
}
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