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/*
* Copyright (c) 2021, 2022, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2021, Rado Smogura. 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
* @enablePreview
* @summary Test if memory ordering is preserved
*
* @run main/othervm -XX:-TieredCompilation -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure
* -XX:CompileThreshold=100 -XX:CompileCommand=dontinline,compiler.vectorapi.VectorMemoryAlias::test
* compiler.vectorapi.VectorMemoryAlias
* @modules jdk.incubator.vector
*/
package compiler.vectorapi;
import java.nio.ByteOrder;
import java.lang.foreign.MemorySegment;
import jdk.incubator.vector.ByteVector;
import jdk.incubator.vector.VectorSpecies;
public class VectorMemoryAlias {
public static final VectorSpecies<Byte> SPECIES = VectorSpecies.ofLargestShape(byte.class);
public static void main(String[] args) {
for (int i=0; i < 30000; i++) {
if (test() != 1) {
throw new AssertionError();
}
}
}
public static int test() {
byte arr[] = new byte[256];
final var ms = MemorySegment.ofArray(arr);
final var ones = ByteVector.broadcast(SPECIES, 1);
var res = ByteVector.zero(SPECIES);
int result = 0;
result += arr[2];
res.add(ones).intoMemorySegment(ms, 0L, ByteOrder.nativeOrder());
result += arr[2];
return result;
}
}
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