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