114 lines
3.6 KiB
Java
114 lines
3.6 KiB
Java
/*
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* Copyright (c) 2022, 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.CompilerControl;
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import org.openjdk.jmh.annotations.Fork;
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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.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.OutputTimeUnit;
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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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/**
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* Tests transformation that converts "~x + c" into "(c - 1) - x" in
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* AddNode::IdealIL and "~(x+c)" into "(-c - 1) - x" in XorINode:Ideal
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* and XorLNode::Ideal.
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*/
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@BenchmarkMode(Mode.AverageTime)
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@OutputTimeUnit(TimeUnit.NANOSECONDS)
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@State(Scope.Thread)
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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(value = 3)
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public class AddIdealNotXPlusC {
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private static final int I_C = 1234567;
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private static final long L_C = 123_456_789_123_456L;
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private int iFld = 4711;
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private long lFld = 4711 * 4711 * 4711;
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private final int SIZE = 10;
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@Benchmark
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public void baselineInt(Blackhole bh) {
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for (int i = 0; i < SIZE; i++) {
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bh.consume(iFld);
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}
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}
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@Benchmark
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public void baselineLong(Blackhole bh) {
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for (int i = 0; i < SIZE; i++) {
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bh.consume(lFld);
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}
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}
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// Convert "~x + c" into "(c - 1) - x" for int.
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// (c - 1) -x + x is then converted into c - 1.
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@Benchmark
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public void testInt1(Blackhole bh) {
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for (int i = 0; i < SIZE; i++) {
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bh.consume(~iFld + I_C + iFld);
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}
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}
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// Convert "~(x + c)" into "(-c - 1) - x" for int.
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// (-c - 1) -x + x is then converted into -c - 1.
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@Benchmark
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public void testInt2(Blackhole bh) {
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for (int i = 0; i < SIZE; i++) {
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bh.consume(~(iFld + I_C) + iFld);
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}
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}
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// Convert "~x + c" into "(c - 1) - x" for long.
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// (c - 1) -x + x is then converted into c - 1.
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@Benchmark
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public void testLong1(Blackhole bh) {
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for (int i = 0; i < SIZE; i++) {
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bh.consume(~lFld + L_C + lFld);
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}
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}
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// Convert "~(x + c)" into "(-c - 1) - x" for long.
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// (-c - 1) -x + x is then converted into -c - 1.
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@Benchmark
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public void testLong2(Blackhole bh) {
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for (int i = 0; i < SIZE; i++) {
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bh.consume(~(lFld + L_C) + lFld);
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}
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}
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}
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