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8285868: x86 intrinsics for floating point method isInfinite

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Reviewed-by: kvn, jbhateja
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vamsi-parasa 2022-06-02 17:42:42 +00:00 • committed by Jatin Bhateja
parent 13596cdf69
commit 7f44f572ea
18 changed files with 513 additions and 0 deletions
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102
test/micro/org/openjdk/bench/java/lang/DoubleClassCheck.java Normal file
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/*
* Copyright (c) 2022, 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.
*
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*/
package org.openjdk.bench.java.lang;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.CompilerControl;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OperationsPerInvocation;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Param;
import java.util.random.RandomGenerator;
import java.util.random.RandomGeneratorFactory;
import java.util.concurrent.TimeUnit;
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@State(Scope.Thread)
@Fork(1)
public class DoubleClassCheck {
RandomGenerator rng;
static final int BUFFER_SIZE = 1024;
double[] inputs;
boolean[] storeOutputs;
int[] cmovOutputs;
int[] branchOutputs;
@CompilerControl(CompilerControl.Mode.DONT_INLINE)
static int call() {
return 1;
}
@Setup
public void setup() {
storeOutputs = new boolean[BUFFER_SIZE];
cmovOutputs = new int[BUFFER_SIZE];
branchOutputs = new int[BUFFER_SIZE];
inputs = new double[BUFFER_SIZE];
RandomGenerator rng = RandomGeneratorFactory.getDefault().create(0);
double input;
for (int i = 0; i < BUFFER_SIZE; i++) {
if (i % 5 == 0) {
input = (i%2 == 0) ? Double.NEGATIVE_INFINITY : Double.POSITIVE_INFINITY;
}
else if (i % 3 == 0) input = Double.NaN;
else input = rng.nextDouble();
inputs[i] = input;
}
}
@Benchmark
@OperationsPerInvocation(BUFFER_SIZE)
public void testIsInfiniteStore() {
for (int i = 0; i < BUFFER_SIZE; i++) {
storeOutputs[i] = Double.isInfinite(inputs[i]);
}
}
@Benchmark
@OperationsPerInvocation(BUFFER_SIZE)
public void testIsInfiniteCMov() {
for (int i = 0; i < BUFFER_SIZE; i++) {
cmovOutputs[i] = Double.isInfinite(inputs[i]) ? 9 : 7;
}
}
@Benchmark
@OperationsPerInvocation(BUFFER_SIZE)
public void testIsInfiniteBranch() {
for (int i = 0; i < BUFFER_SIZE; i++) {
cmovOutputs[i] = Double.isInfinite(inputs[i]) ? call() : 7;
}
}
}