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 * @summary Add C2 x86 Superword support for scalar product reduction optimizations : float test
  28 *
  29 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=2 ProdRed_Float
  30 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=2 ProdRed_Float
  31 *
  32 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=4 ProdRed_Float
  33 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=4 ProdRed_Float
  34 *
  35 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=8 ProdRed_Float
  36 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=8 ProdRed_Float
  37 *
  38 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=16 ProdRed_Float
  39 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=16 ProdRed_Float
  40 */
  41 
  42 public class ProdRed_Float
  43 {
  44   public static void main(String[] args) throws Exception {
  45     float[] a = new float[256*1024];
  46     float[] b = new float[256*1024];
  47     prodReductionInit(a,b);
  48     float valid = 20000;
  49     float total = 0;
  50     for(int j = 0; j < 20000; j++) {
  51       total = j + 1;
  52       total = prodReductionImplement(a,b, total);
  53     }
  54     if(total == valid) {
  55       System.out.println("Success");
  56     } else {
  57       System.out.println("Invalid sum of elements variable in total: " + total);
  58       System.out.println("Expected value = " + valid);
  59       throw new Exception("Failed");
  60     }
  61   }
  62 
  63   public static void prodReductionInit(float[] a, float[] b)
  64   {
  65     for(int i = 0; i < a.length; i++)
  66     {
  67       a[i] = i + 2;
  68       b[i] = i + 1;
  69     }
  70   }
  71 
  72   public static float prodReductionImplement(float[] a, float[] b, float total)
  73   {
  74     for(int i = 0; i < a.length; i++)
  75     {
  76       total *= a[i] - b[i];
  77     }
  78     return total;
  79   }
  80 
  81 }