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8259757: add a regression test for 8259353 and 8259601
Co-authored-by: Xiaohong Gong <xgong@openjdk.org>
Co-authored-by: Igor Ignatyev <iignatyev@openjdk.org>
Reviewed-by: kvn, jiefu
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iignatev and Xiaohong Gong committed Jan 20, 2021
1 parent 0120510 commit 0408b23bcf5fb56646317631e2a5ca6cefbae7e7
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/*
* Copyright (c) 2021, 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.
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*/

package compiler.vectorapi;

import jdk.incubator.vector.ByteVector;
import jdk.incubator.vector.Vector;
import jdk.incubator.vector.VectorSpecies;

import java.util.Arrays;

import jdk.test.lib.format.ArrayDiff;

/*
* @test
* @bug 8259353 8259601
* @summary VectorReinterpretNode is incorrectly optimized out
* @modules jdk.incubator.vector
* @library /test/lib
*
* @run main compiler.vectorapi.Test8259353
*/
public class Test8259353 {

static final VectorSpecies<Byte> SPECIES_128 = ByteVector.SPECIES_128;
static final VectorSpecies<Byte> SPECIES_64 = ByteVector.SPECIES_64;

static final byte[] a = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
static final byte[] b = new byte[16];
static final byte[] c = new byte[16];
static final byte[] r = {0, 1, 2, 3, 4, 5, 6, 7, 0, 0, 0, 0, 0, 0, 0, 0};

private static void func() {
var av = ByteVector.fromArray(SPECIES_128, a, 0);
var bv = (ByteVector)av.reinterpretShape(SPECIES_64, 0);
bv.intoArray(b, 0);

var cv = (ByteVector)bv.reinterpretShape(SPECIES_128, 0);
cv.intoArray(c, 0);
}

public static void main(String[] args) {
for (int i = 0; i < 100000; i++) {
func();
}

System.out.println("a: " + Arrays.toString(a));
System.out.println("b: " + Arrays.toString(b));
System.out.println("c: " + Arrays.toString(c));

var diff = ArrayDiff.of(b, r);
if (!diff.areEqual()) {
throw new AssertionError("b array is unexpected: " + diff.format());
}

diff = ArrayDiff.of(c, r);
if (!diff.areEqual()) {
throw new AssertionError("c array is unexpected: " + diff.format());
}
}
}

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