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/*
* Copyright (c) 2015, 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.
*/
/**
* @test
* @bug 8074981
* @summary Add C2 x86 Superword support for scalar product reduction optimizations : float test
* @library /test/lib /
* @run driver compiler.loopopts.superword.ProdRed_Double
*/
package compiler.loopopts.superword;
import compiler.lib.ir_framework.*;
public class ProdRed_Double {
public static void main(String[] args) throws Exception {
TestFramework framework = new TestFramework();
framework.addFlags("-XX:+IgnoreUnrecognizedVMOptions",
"-XX:LoopUnrollLimit=250",
"-XX:CompileThresholdScaling=0.1");
int i = 0;
Scenario[] scenarios = new Scenario[6];
for (String reductionSign : new String[] {"+", "-"}) {
for (int maxUnroll : new int[] {4, 8, 16}) {
scenarios[i] = new Scenario(i, "-XX:" + reductionSign + "SuperWordReductions",
"-XX:LoopMaxUnroll=" + maxUnroll);
i++;
}
}
framework.addScenarios(scenarios);
framework.start();
}
@Run(test = {"prodReductionImplement",
"prodReductionWithStoreImplement"},
mode = RunMode.STANDALONE)
public void runTests() throws Exception {
double[] a = new double[256 * 1024];
double[] b = new double[256 * 1024];
double[] c = new double[256 * 1024];
prodReductionInit(a, b);
double valid = 2000;
double total = 0;
for (int j = 0; j < 2000; j++) {
total = j + 1;
total = prodReductionImplement(a, b, total);
}
testCorrectness(valid, total, "prodReduction");
total = 0;
for (int j = 0; j < 2000; j++) {
total = j + 1;
total = prodReductionWithStoreImplement(a, b, c, total);
}
testCorrectness(valid, total, "prodReductionWithStore");
}
public static void prodReductionInit(double[] a, double[] b) {
for (int i = 0; i < a.length; i++) {
a[i] = i + 2;
b[i] = i + 1;
}
}
@Test
@IR(applyIf = {"SuperWordReductions", "false"},
failOn = {IRNode.MUL_REDUCTION_VD})
@IR(applyIfAnd = {"SuperWordReductions", "true", "LoopMaxUnroll", ">= 8"},
applyIfCPUFeature = {"sse2", "true"},
counts = {IRNode.MUL_REDUCTION_VD, ">= 1"})
// There is no efficient way to implement strict-ordered version on riscv64.
@IR(applyIf = {"SuperWordReductions", "true"},
applyIfCPUFeature = {"rvv", "true"},
failOn = {IRNode.MUL_REDUCTION_VD})
public static double prodReductionImplement(double[] a, double[] b, double total) {
for (int i = 0; i < a.length; i++) {
total *= a[i] - b[i];
}
return total;
}
@Test
@IR(applyIf = {"SuperWordReductions", "false"},
failOn = {IRNode.MUL_REDUCTION_VD})
@IR(applyIfAnd = {"SuperWordReductions", "true", "LoopMaxUnroll", ">= 8"},
applyIfCPUFeature = {"sse2", "true"},
counts = {IRNode.MUL_REDUCTION_VD, ">= 1"})
// There is no efficient way to implement strict-ordered version on riscv64.
@IR(applyIf = {"SuperWordReductions", "true"},
applyIfCPUFeature = {"rvv", "true"},
failOn = {IRNode.MUL_REDUCTION_VD})
public static double prodReductionWithStoreImplement(double[] a, double[] b, double[] c, double total) {
for (int i = 0; i < a.length; i++) {
c[i] = a[i] - b[i];
total *= c[i];
}
return total;
}
public static void testCorrectness(
double total,
double valid,
String op) throws Exception {
if (total != valid) {
throw new Exception(
"Invalid total: " + total + " " +
"Expected value = " + valid + " " + op + ": Failed");
}
}
}
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