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 product reduction optimizations : int test

    29  *

    30  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=2 -XX:CompileThresholdScaling=0.1 ProdRed_Int

    31  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=2 -XX:CompileThresholdScaling=0.1 ProdRed_Int

    32  *

    33  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=4 -XX:CompileThresholdScaling=0.1 ProdRed_Int

    34  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=4 -XX:CompileThresholdScaling=0.1 ProdRed_Int

    35  *

    36  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=8 -XX:CompileThresholdScaling=0.1 ProdRed_Int

    37  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=8 -XX:CompileThresholdScaling=0.1 ProdRed_Int

    38  *

    39  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=16 -XX:CompileThresholdScaling=0.1 ProdRed_Int

    40  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:LoopMaxUnroll=16 -XX:CompileThresholdScaling=0.1 ProdRed_Int

    41  */

    42 

    43 public class ProdRed_Int

    44 {

    45   public static void main(String[] args) throws Exception {

    46     int[] a = new int[256*1024];

    47     int[] b = new int[256*1024];

    48     prodReductionInit(a,b);

    49     int valid = 419430401;

    50     int total = 1;

    51     for(int j = 0; j < 2000; j++) {

    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(int[] a, int[] 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 int prodReductionImplement(int[] a, int[] b, int 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 }