143 lines
4.4 KiB
Java
143 lines
4.4 KiB
Java
/*
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* Copyright (c) 2021, 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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package org.openjdk.bench.vm.compiler;
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import org.openjdk.jmh.annotations.Benchmark;
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import org.openjdk.jmh.annotations.BenchmarkMode;
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import org.openjdk.jmh.annotations.Fork;
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import org.openjdk.jmh.annotations.Level;
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import org.openjdk.jmh.annotations.Measurement;
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import org.openjdk.jmh.annotations.Mode;
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import org.openjdk.jmh.annotations.OutputTimeUnit;
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import org.openjdk.jmh.annotations.Scope;
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import org.openjdk.jmh.annotations.Setup;
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import org.openjdk.jmh.annotations.State;
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import org.openjdk.jmh.annotations.Warmup;
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import org.openjdk.jmh.infra.Blackhole;
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import java.util.concurrent.TimeUnit;
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@BenchmarkMode(Mode.AverageTime)
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@OutputTimeUnit(TimeUnit.NANOSECONDS)
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@Warmup(iterations = 4, time = 2, timeUnit = TimeUnit.SECONDS)
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@Measurement(iterations = 4, time = 2, timeUnit = TimeUnit.SECONDS)
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@Fork(2)
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@State(Scope.Thread)
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public class UnsignedComparison {
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private static final int ITERATIONS = 1000;
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private static final int CONST_OPERAND = 4;
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private static final int INT_MIN = Integer.MIN_VALUE;
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private static final long LONG_MIN = Long.MIN_VALUE;
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int arg0 = 0, arg1 = 4;
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@Setup(Level.Invocation)
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public void toggle() {
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arg0 = (arg0 + 1) & 7;
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}
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@Benchmark
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public void intVarDirect(Blackhole bh) {
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for (int i = 0; i < ITERATIONS; i++) {
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bh.consume(arg0 + INT_MIN < arg1 + INT_MIN);
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}
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}
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@Benchmark
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public void intVarLibLT(Blackhole bh) {
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for (int i = 0; i < ITERATIONS; i++) {
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bh.consume(Integer.compareUnsigned(arg0, arg1) < 0);
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}
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}
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@Benchmark
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public void intVarLibGT(Blackhole bh) {
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for (int i = 0; i < ITERATIONS; i++) {
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bh.consume(Integer.compareUnsigned(arg0, arg1) > 0);
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}
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}
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@Benchmark
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public void intConDirect(Blackhole bh) {
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for (int i = 0; i < ITERATIONS; i++) {
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bh.consume(arg0 + INT_MIN < CONST_OPERAND + INT_MIN);
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}
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}
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@Benchmark
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public void intConLibLT(Blackhole bh) {
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for (int i = 0; i < ITERATIONS; i++) {
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bh.consume(Integer.compareUnsigned(arg0, CONST_OPERAND) < 0);
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}
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}
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@Benchmark
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public void intConLibGT(Blackhole bh) {
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for (int i = 0; i < ITERATIONS; i++) {
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bh.consume(Integer.compareUnsigned(arg0, CONST_OPERAND) > 0);
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}
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}
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@Benchmark
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public void longVarDirect(Blackhole bh) {
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for (int i = 0; i < ITERATIONS; i++) {
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bh.consume(arg0 + LONG_MIN < arg1 + LONG_MIN);
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}
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}
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@Benchmark
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public void longVarLibLT(Blackhole bh) {
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for (int i = 0; i < ITERATIONS; i++) {
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bh.consume(Long.compareUnsigned(arg0, arg1) < 0);
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}
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}
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@Benchmark
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public void longVarLibGT(Blackhole bh) {
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for (int i = 0; i < ITERATIONS; i++) {
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bh.consume(Long.compareUnsigned(arg0, arg1) > 0);
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}
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}
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@Benchmark
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public void longConDirect(Blackhole bh) {
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for (int i = 0; i < ITERATIONS; i++) {
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bh.consume(arg0 + LONG_MIN < CONST_OPERAND + LONG_MIN);
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}
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}
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@Benchmark
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public void longConLibLT(Blackhole bh) {
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for (int i = 0; i < ITERATIONS; i++) {
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bh.consume(Long.compareUnsigned(arg0, CONST_OPERAND) < 0);
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}
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}
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@Benchmark
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public void longConLibGT(Blackhole bh) {
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for (int i = 0; i < ITERATIONS; i++) {
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bh.consume(Long.compareUnsigned(arg0, CONST_OPERAND) > 0);
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}
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}
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}
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