1 /* 2 * Copyright (c) 2014, 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 8135028 28 * @summary Add C2 x86 Superword support for scalar sum reduction optimizations : double sqrt test 29 * @requires os.arch=="x86" | os.arch=="amd64" | os.arch=="x86_64" | os.arch=="aarch64" 30 * 31 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=2 -XX:CompileThresholdScaling=0.1 SumRedSqrt_Double 32 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=2 -XX:CompileThresholdScaling=0.1 SumRedSqrt_Double 33 * 34 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=4 -XX:CompileThresholdScaling=0.1 SumRedSqrt_Double 35 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=4 -XX:CompileThresholdScaling=0.1 SumRedSqrt_Double 36 * 37 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=8 -XX:CompileThresholdScaling=0.1 SumRedSqrt_Double 38 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=8 -XX:CompileThresholdScaling=0.1 SumRedSqrt_Double 39 * 40 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=16 -XX:CompileThresholdScaling=0.1 SumRedSqrt_Double 41 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=16 -XX:CompileThresholdScaling=0.1 SumRedSqrt_Double 42 */ 43 44 public class SumRedSqrt_Double 45 { 46 public static void main(String[] args) throws Exception { 47 double[] a = new double[256*1024]; 48 double[] b = new double[256*1024]; 49 double[] c = new double[256*1024]; 50 double[] d = new double[256*1024]; 51 sumReductionInit(a,b,c); 52 double total = 0; 53 double valid = 2.06157643776E14; 54 for(int j = 0; j < 2000; j++) { 55 total = sumReductionImplement(a,b,c,d,total); 56 } 57 if(total == valid) { 58 System.out.println("Success"); 59 } else { 60 System.out.println("Invalid sum of elements variable in total: " + total); 61 System.out.println("Expected value = " + valid); 62 throw new Exception("Failed"); 63 } 64 } 65 66 public static void sumReductionInit( 67 double[] a, 68 double[] b, 69 double[] c) 70 { 71 for(int j = 0; j < 1; j++) 72 { 73 for(int i = 0; i < a.length; i++) 74 { 75 a[i] = i * 1 + j; 76 b[i] = i * 1 - j; 77 c[i] = i + j; 78 } 79 } 80 } 81 82 public static double sumReductionImplement( 83 double[] a, 84 double[] b, 85 double[] c, 86 double[] d, 87 double total) 88 { 89 for(int i = 0; i < a.length; i++) 90 { 91 d[i]= Math.sqrt(a[i] * b[i]) + Math.sqrt(a[i] * c[i]) + Math.sqrt(b[i] * c[i]); 92 total += d[i]; 93 } 94 return total; 95 } 96 97 }