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/*
* Copyright (c) 2022, Arm Limited. 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.
*/
package compiler.vectorization;
import compiler.lib.ir_framework.*;
/*
* @test
* @bug 8297689
* @summary Test miscompilation of reverseBytes call from subword types
* @library /test/lib /
* @requires vm.compiler2.enabled
* @run driver compiler.vectorization.TestSubwordReverseBytes
*/
public class TestSubwordReverseBytes {
private static final int SIZE = 32000;
private static int[] idx = new int[SIZE];
private static short[] rbs = new short[SIZE];
private static char[] rbc = new char[SIZE];
static {
for (int i = 0; i < SIZE; i++) {
idx[i] = i;
}
for (short s = 0; s < SIZE; s++) {
rbs[s] = Short.reverseBytes(s);
}
for (char c = 0; c < SIZE; c++) {
rbc[c] = Character.reverseBytes(c);
}
}
@Test
@IR(failOn = {IRNode.REVERSE_BYTES_VS})
public static int[] testShortReverseBytes() {
int[] res = new int[SIZE];
for (int i = 0; i < SIZE; i++) {
res[i] = Short.reverseBytes((short) idx[i]);
}
return res;
}
@Run(test = "testShortReverseBytes")
public static void testShort() {
int[] res = testShortReverseBytes();
for (int i = 0; i < SIZE; i++) {
if (res[i] != rbs[i]) {
throw new RuntimeException("Wrong result: expected = " +
(int) rbs[i] + ", actual = " + res[i]);
}
}
}
@Test
@IR(failOn = {IRNode.REVERSE_BYTES_VS})
public static int[] testCharacterReverseBytes() {
int[] res = new int[SIZE];
for (int i = 0; i < SIZE; i++) {
res[i] = Character.reverseBytes((char) idx[i]);
}
return res;
}
@Run(test = "testCharacterReverseBytes")
public static void testChar() {
int[] res = testCharacterReverseBytes();
for (int i = 0; i < SIZE; i++) {
if (res[i] != rbc[i]) {
throw new RuntimeException("Wrong result: expected = " +
(int) rbc[i] + ", actual = " + res[i]);
}
}
}
public static void main(String[] args) {
TestFramework.run();
}
}
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