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8318562: Computational test more than 2x slower when AVX instructions…
… are used Backport-of: 0881f2b0c43870ed10b1166d04cef9832e58629e
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142 changes: 142 additions & 0 deletions
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test/micro/org/openjdk/bench/vm/compiler/x86/ComputePI.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| /* | ||
| * Copyright (c) 2023, 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 org.openjdk.bench.vm.compiler; | ||
|
|
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| import org.openjdk.jmh.annotations.Benchmark; | ||
| import org.openjdk.jmh.annotations.BenchmarkMode; | ||
| import org.openjdk.jmh.annotations.Fork; | ||
| import org.openjdk.jmh.annotations.Measurement; | ||
| import org.openjdk.jmh.annotations.Mode; | ||
| 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.Warmup; | ||
|
|
||
| import java.util.concurrent.TimeUnit; | ||
|
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| @State(Scope.Thread) | ||
| @BenchmarkMode(Mode.AverageTime) | ||
| @OutputTimeUnit(TimeUnit.NANOSECONDS) | ||
| @Warmup(iterations = 5, time = 5, timeUnit = TimeUnit.SECONDS) | ||
| @Measurement(iterations = 5, time = 5, timeUnit = TimeUnit.SECONDS) | ||
| @Fork(value = 3) | ||
| public class ComputePI { | ||
|
|
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| @Benchmark | ||
| public double compute_pi_int_dbl() { | ||
| double pi = 4.0; | ||
| boolean sign = false; | ||
|
|
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| for (int i = 3; i < 1000; i += 2) { | ||
| if (sign) { | ||
| pi += 4.0 / i; | ||
| } else { | ||
| pi -= 4.0 / i; | ||
| } | ||
| sign = !sign; | ||
| } | ||
| return pi; | ||
| } | ||
|
|
||
| @Benchmark | ||
| public double compute_pi_int_flt() { | ||
| float pi = 4.0f; | ||
| boolean sign = false; | ||
|
|
||
| for (int i = 3; i < 1000; i += 2) { | ||
| if (sign) { | ||
| pi += 4.0f / i; | ||
| } else { | ||
| pi -= 4.0f / i; | ||
| } | ||
| sign = !sign; | ||
| } | ||
| return pi; | ||
| } | ||
|
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| @Benchmark | ||
| public double compute_pi_long_dbl() { | ||
| double pi = 4.0; | ||
| boolean sign = false; | ||
|
|
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| for (long i = 3; i < 1000; i += 2) { | ||
| if (sign) { | ||
| pi += 4.0 / i; | ||
| } else { | ||
| pi -= 4.0 / i; | ||
| } | ||
| sign = !sign; | ||
| } | ||
| return pi; | ||
| } | ||
|
|
||
| @Benchmark | ||
| public double compute_pi_long_flt() { | ||
| float pi = 4.0f; | ||
| boolean sign = false; | ||
|
|
||
| for (long i = 3; i < 1000; i += 2) { | ||
| if (sign) { | ||
| pi += 4.0f / i; | ||
| } else { | ||
| pi -= 4.0f / i; | ||
| } | ||
| sign = !sign; | ||
| } | ||
| return pi; | ||
| } | ||
|
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||
| @Benchmark | ||
| public double compute_pi_flt_dbl() { | ||
| double pi = 4.0; | ||
| boolean sign = false; | ||
|
|
||
| for (float i = 3.0f; i < 1000.0f; i += 2.0f) { | ||
| if (sign) { | ||
| pi += 4.0 / i; | ||
| } else { | ||
| pi -= 4.0 / i; | ||
| } | ||
| sign = !sign; | ||
| } | ||
| return pi; | ||
| } | ||
|
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| @Benchmark | ||
| public double compute_pi_dbl_flt() { | ||
| float pi = 4.0f; | ||
| boolean sign = false; | ||
|
|
||
| for (float i = 3.0f; i < 1000.0f; i += 2.0f) { | ||
| if (sign) { | ||
| pi += 4.0f / i; | ||
| } else { | ||
| pi -= 4.0f / i; | ||
| } | ||
| sign = !sign; | ||
| } | ||
| return pi; | ||
| } | ||
| } |
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