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/*
* Copyright (c) 2015, 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 8076276
* @summary Add C2 x86 Superword support for scalar sum reduction optimizations : long test
* @requires os.arch=="x86" | os.arch=="i386" | os.arch=="amd64" | os.arch=="x86_64"
*
* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
* -XX:CompileThresholdScaling=0.1
* -XX:+SuperWordReductions
* -XX:LoopMaxUnroll=4
* compiler.loopopts.superword.SumRed_Long
* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
* -XX:CompileThresholdScaling=0.1
* -XX:-SuperWordReductions
* -XX:LoopMaxUnroll=4
* compiler.loopopts.superword.SumRed_Long
*
* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
* -XX:CompileThresholdScaling=0.1
* -XX:+SuperWordReductions
* -XX:LoopMaxUnroll=8
* compiler.loopopts.superword.SumRed_Long
* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
* -XX:CompileThresholdScaling=0.1
* -XX:-SuperWordReductions
* -XX:LoopMaxUnroll=8
* compiler.loopopts.superword.SumRed_Long
*/
package compiler.loopopts.superword;
public class SumRed_Long {
public static void main(String[] args) throws Exception {
long[] a = new long[256 * 1024];
long[] b = new long[256 * 1024];
long[] c = new long[256 * 1024];
long[] d = new long[256 * 1024];
sumReductionInit(a, b, c);
long total = 0;
long valid = 262144000;
for (int j = 0; j < 2000; j++) {
total = sumReductionImplement(a, b, c, d, total);
}
total = (int) total;
if (total == valid) {
System.out.println("Success");
} else {
System.out.println("Invalid sum of elements variable in total: " + total);
System.out.println("Expected value = " + valid);
throw new Exception("Failed");
}
}
public static void sumReductionInit(
long[] a,
long[] b,
long[] c) {
for (int j = 0; j < 1; j++) {
for (int i = 0; i < a.length; i++) {
a[i] = i * 1 + j;
b[i] = i * 1 - j;
c[i] = i + j;
}
}
}
public static long sumReductionImplement(
long[] a,
long[] b,
long[] c,
long[] d,
long total) {
for (int i = 0; i < a.length; i++) {
d[i] = (a[i] * b[i]) + (a[i] * c[i]) + (b[i] * c[i]);
total += d[i];
}
return total;
}
}
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