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8303508: Vector.lane() gets wrong value on x86
Backport-of: d61de141eb8ba52122db43172429f9186ea47e61
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/* | ||
* Copyright (c) 2023, 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. | ||
*/ | ||
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package compiler.vectorapi; | ||
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import jdk.incubator.vector.ByteVector; | ||
import jdk.incubator.vector.ShortVector; | ||
import jdk.incubator.vector.VectorSpecies; | ||
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/* | ||
* @test | ||
* @bug 8303508 | ||
* @summary Vector.lane() gets wrong value on x86 | ||
* @modules jdk.incubator.vector | ||
* @library /test/lib | ||
* | ||
* @run main/othervm -Xbatch -XX:-TieredCompilation -ea compiler.vectorapi.Test8303508 | ||
*/ | ||
public class Test8303508 { | ||
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static final VectorSpecies<Byte> BSPECIES_128 = ByteVector.SPECIES_128; | ||
static final VectorSpecies<Short> SSPECIES_128 = ShortVector.SPECIES_128; | ||
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static final byte[] ba = {0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, -13, -14, -15}; | ||
static final short[] sa = {0, -1, -2, -3, -4, -5, -6, -7}; | ||
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private static byte vec_extract_byte(int idx) { | ||
var bv = ByteVector.fromArray(BSPECIES_128, ba, 0); | ||
return bv.lane(idx); | ||
} | ||
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private static short vec_extract_short(int idx) { | ||
var sv = ShortVector.fromArray(SSPECIES_128, sa, 0); | ||
return sv.lane(idx); | ||
} | ||
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public static void main(String[] args) { | ||
int idx = 0; | ||
int actual = 0; | ||
int expected = 0; | ||
for (int i = 0; i < 10000; i++) { | ||
idx = i & 0xF; | ||
actual = vec_extract_byte(idx); | ||
expected = ba[idx]; | ||
if (actual != expected) { | ||
throw new AssertionError("incorrect result byte extraction, actual = " + actual + " expected = " + expected); | ||
} | ||
idx = i & 0x7; | ||
actual = vec_extract_short(idx); | ||
expected = sa[idx]; | ||
if (actual != expected) { | ||
throw new AssertionError("incorrect result short extraction, actual = " + actual + " expected = " + expected); | ||
} | ||
} | ||
System.out.println("PASS"); | ||
} | ||
} |
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