68 lines
2.2 KiB
Java
68 lines
2.2 KiB
Java
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/*
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* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2021, Rado Smogura. All rights reserved.
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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/*
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* @test
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* @summary Test if memory ordering is preserved
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*
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* @run main/othervm -XX:-TieredCompilation -XX:+UnlockDiagnosticVMOptions -XX:+AbortVMOnCompilationFailure
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* -XX:CompileThreshold=100 -XX:CompileCommand=dontinline,compiler.vectorapi.VectorMemoryAlias::test
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* compiler.vectorapi.VectorMemoryAlias
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* @modules jdk.incubator.vector
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*/
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package compiler.vectorapi;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import jdk.incubator.vector.ByteVector;
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import jdk.incubator.vector.VectorSpecies;
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public class VectorMemoryAlias {
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public static final VectorSpecies<Byte> SPECIES = VectorSpecies.ofLargestShape(byte.class);
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public static void main(String[] args) {
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for (int i=0; i < 30000; i++) {
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if (test() != 1) {
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throw new AssertionError();
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}
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}
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}
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public static int test() {
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byte arr[] = new byte[256];
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final var bb = ByteBuffer.wrap(arr);
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final var ones = ByteVector.broadcast(SPECIES, 1);
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var res = ByteVector.zero(SPECIES);
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int result = 0;
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result += arr[2];
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res.add(ones).intoByteBuffer(bb, 0, ByteOrder.nativeOrder());
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result += arr[2];
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return result;
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}
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}
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