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8248830: C2: Optimize Rotate API on x86

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Improved existing scalar rotate operations, added support for vector rotate operations using new AVX512 instructions.

Reviewed-by: vlivanov, kvn
This commit is contained in:
Jatin Bhateja 2020-08-09 02:03:09 +05:30
parent 084e15bca3
commit 3ed56830b4
19 changed files with 1474 additions and 282 deletions
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87
test/micro/org/openjdk/bench/java/lang/RotateBenchmark.java Normal file
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//
// Copyright (c) 2003, 2020, 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.java.lang;
import java.util.Random;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.infra.Blackhole;
@OutputTimeUnit(TimeUnit.MILLISECONDS)
@State(Scope.Thread)
@BenchmarkMode(Mode.Throughput)
public class RotateBenchmark {
@Param({"1024"})
public int TESTSIZE;
@Param({"20"})
public int SHIFT;
public long [] larr;
public int [] iarr;
public long [] lres;
public int [] ires;
@Setup(Level.Trial)
public void BmSetup() {
Random r = new Random(1024);
larr = new long[TESTSIZE];
iarr = new int[TESTSIZE];
lres = new long[TESTSIZE];
ires = new int[TESTSIZE];
for (int i = 0; i < TESTSIZE; i++) {
larr[i] = r.nextLong();
}
for (int i = 0; i < TESTSIZE; i++) {
iarr[i] = r.nextInt();
}
}
@Benchmark
public void testRotateLeftI() {
for (int i = 0; i < TESTSIZE; i++)
ires[i] = Integer.rotateLeft(iarr[i], SHIFT);
}
@Benchmark
public void testRotateRightI() {
for (int i = 0; i < TESTSIZE; i++)
ires[i] = Integer.rotateRight(iarr[i], SHIFT);
}
@Benchmark
public void testRotateLeftL() {
for (int i = 0; i < TESTSIZE; i++)
lres[i] = Long.rotateLeft(larr[i], SHIFT);
}
@Benchmark
public void testRotateRightL() {
for (int i = 0; i < TESTSIZE; i++)
lres[i] = Long.rotateRight(larr[i], SHIFT);
}
}