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/*
* Copyright (c) 2020, 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.
*/
/**
* @test
* @bug 8251994
* @summary Test forced vectorization
* @requires vm.compiler2.enabled & vm.compMode != "Xint"
*
* @run main/othervm -XX:CompileCommand=option,*::test,Vectorize compiler.vectorization.TestOptionVectorize
*/
package compiler.vectorization;
import java.util.stream.IntStream;
public class TestOptionVectorize {
static final int RANGE = 512;
static final int ITER = 100;
static void init(double[] data) {
IntStream.range(0, RANGE).parallel().forEach(j -> {
data[j] = j + 1;
});
}
static void test(double[] data, double A, double B) {
for (int i = RANGE - 1; i > 0; i--) {
for (int j = 0; j <= i - 1; j++) {
data[j] = A * data[j + 1] + B * data[j];
}
}
}
static void verify(double[] data, double[] gold) {
for (int i = 0; i < RANGE; i++) {
if (data[i] != gold[i]) {
throw new RuntimeException(" Invalid result: data[" + i + "]: " + data[i] + " != " + gold[i]);
}
}
}
public static void main(String[] args) {
double[] data = new double[RANGE];
double[] gold = new double[RANGE];
System.out.println(" Run test ...");
init(gold); // reset
test(gold, 1.0, 2.0);
for (int i = 0; i < ITER; i++) {
init(data); // reset
test(data, 1.0, 2.0);
}
verify(data, gold);
System.out.println(" Finished test.");
}
}
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