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 /** 26 * @test 27 * @bug 8074981 28 * @summary Add C2 x86 Superword support for scalar sum reduction optimizations : double test 29 * 30 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=2 -XX:CompileThresholdScaling=0.1 SumRed_Double 31 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=2 -XX:CompileThresholdScaling=0.1 SumRed_Double 32 * 33 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=4 -XX:CompileThresholdScaling=0.1 SumRed_Double 34 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=4 -XX:CompileThresholdScaling=0.1 SumRed_Double 35 * 36 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=8 -XX:CompileThresholdScaling=0.1 SumRed_Double 37 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=8 -XX:CompileThresholdScaling=0.1 SumRed_Double 38 * 39 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=16 -XX:CompileThresholdScaling=0.1 SumRed_Double 40 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=16 -XX:CompileThresholdScaling=0.1 SumRed_Double 41 */ 42 43 public class SumRed_Double 44 { 45 public static void main(String[] args) throws Exception { 46 double[] a = new double[256*1024]; 47 double[] b = new double[256*1024]; 48 double[] c = new double[256*1024]; 49 double[] d = new double[256*1024]; 50 sumReductionInit(a,b,c); 51 double total = 0; 52 double valid = 3.6028590866691944E19; 53 for(int j = 0; j < 2000; j++) { 54 total = sumReductionImplement(a,b,c,d,total); 55 } 56 if(total == valid) { 57 System.out.println("Success"); 58 } else { 59 System.out.println("Invalid sum of elements variable in total: " + total); 60 System.out.println("Expected value = " + valid); 61 throw new Exception("Failed"); 62 } 63 } 64 65 public static void sumReductionInit( 66 double[] a, 67 double[] b, 68 double[] c) 69 { 70 for(int j = 0; j < 1; j++) 71 { 72 for(int i = 0; i < a.length; i++) 73 { 74 a[i] = i * 1 + j; 75 b[i] = i * 1 - j; 76 c[i] = i + j; 77 } 78 } 79 } 80 81 public static double sumReductionImplement( 82 double[] a, 83 double[] b, 84 double[] c, 85 double[] d, 86 double total) 87 { 88 for(int i = 0; i < a.length; i++) 89 { 90 d[i]= (a[i] * b[i]) + (a[i] * c[i]) + (b[i] * c[i]); 91 total += d[i]; 92 } 93 return total; 94 } 95 96 }