1/* 2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/** 25 * @test 26 * @bug 8076276 27 * @summary Add C2 x86 Superword support for scalar sum reduction optimizations : long test 28 * @requires os.arch=="x86" | os.arch=="i386" | os.arch=="amd64" | os.arch=="x86_64" 29 * 30 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250 31 * -XX:CompileThresholdScaling=0.1 32 * -XX:+SuperWordReductions 33 * -XX:LoopMaxUnroll=4 34 * compiler.loopopts.superword.SumRed_Long 35 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250 36 * -XX:CompileThresholdScaling=0.1 37 * -XX:-SuperWordReductions 38 * -XX:LoopMaxUnroll=4 39 * compiler.loopopts.superword.SumRed_Long 40 * 41 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250 42 * -XX:CompileThresholdScaling=0.1 43 * -XX:+SuperWordReductions 44 * -XX:LoopMaxUnroll=8 45 * compiler.loopopts.superword.SumRed_Long 46 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250 47 * -XX:CompileThresholdScaling=0.1 48 * -XX:-SuperWordReductions 49 * -XX:LoopMaxUnroll=8 50 * compiler.loopopts.superword.SumRed_Long 51 */ 52 53package compiler.loopopts.superword; 54 55public class SumRed_Long { 56 public static void main(String[] args) throws Exception { 57 long[] a = new long[256 * 1024]; 58 long[] b = new long[256 * 1024]; 59 long[] c = new long[256 * 1024]; 60 long[] d = new long[256 * 1024]; 61 sumReductionInit(a, b, c); 62 long total = 0; 63 long valid = 262144000; 64 for (int j = 0; j < 2000; j++) { 65 total = sumReductionImplement(a, b, c, d, total); 66 } 67 total = (int) total; 68 if (total == valid) { 69 System.out.println("Success"); 70 } else { 71 System.out.println("Invalid sum of elements variable in total: " + total); 72 System.out.println("Expected value = " + valid); 73 throw new Exception("Failed"); 74 } 75 } 76 77 public static void sumReductionInit( 78 long[] a, 79 long[] b, 80 long[] c) { 81 for (int j = 0; j < 1; j++) { 82 for (int i = 0; i < a.length; i++) { 83 a[i] = i * 1 + j; 84 b[i] = i * 1 - j; 85 c[i] = i + j; 86 } 87 } 88 } 89 90 public static long sumReductionImplement( 91 long[] a, 92 long[] b, 93 long[] c, 94 long[] d, 95 long total) { 96 for (int i = 0; i < a.length; i++) { 97 d[i] = (a[i] * b[i]) + (a[i] * c[i]) + (b[i] * c[i]); 98 total += d[i]; 99 } 100 return total; 101 } 102 103} 104