--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.microbenchmarks/src/micro/benchmarks/MathFunctionBenchmark.java 2017-02-15 17:06:13.307527386 -0800 @@ -0,0 +1,103 @@ +/* + * Copyright (c) 2015, 2015, 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. + */ +package micro.benchmarks; + +import java.util.Random; + +import org.openjdk.jmh.annotations.Benchmark; +import org.openjdk.jmh.annotations.Scope; +import org.openjdk.jmh.annotations.State; +import org.openjdk.jmh.annotations.Warmup; + +import org.graalvm.compiler.microbenchmarks.graal.GraalBenchmark; + +/** + * Benchmarks cost of Math intrinsics. + */ +public class MathFunctionBenchmark extends GraalBenchmark { + + @State(Scope.Benchmark) + public static class ThreadState { + double[] data = randomDoubles(100); + double[] result = new double[100]; + + static double[] randomDoubles(int len) { + double[] data = new double[len]; + Random r = new Random(); + for (int i = 0; i < data.length; i++) { + data[i] = r.nextDouble(); + } + return data; + } + } + + @Benchmark + @Warmup(iterations = 5) + public void mathLog(ThreadState state) { + double[] data = state.data; + for (int i = 0; i < data.length; i++) { + double[] result = state.result; + result[i] = Math.log(data[i]); + } + } + + @Benchmark + @Warmup(iterations = 5) + public void mathLog10(ThreadState state) { + double[] data = state.data; + for (int i = 0; i < data.length; i++) { + double[] result = state.result; + result[i] = Math.log10(data[i]); + } + } + + @Benchmark + @Warmup(iterations = 5) + public void mathSin(ThreadState state) { + double[] data = state.data; + for (int i = 0; i < data.length; i++) { + double[] result = state.result; + result[i] = Math.sin(data[i]); + } + } + + @Benchmark + @Warmup(iterations = 5) + public void mathCos(ThreadState state) { + double[] data = state.data; + for (int i = 0; i < data.length; i++) { + double[] result = state.result; + result[i] = Math.cos(data[i]); + } + } + + @Benchmark + @Warmup(iterations = 5) + public void mathTan(ThreadState state) { + double[] data = state.data; + for (int i = 0; i < data.length; i++) { + double[] result = state.result; + result[i] = Math.tan(data[i]); + } + } +}