/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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/**

 * @test

 * @bug 8074981

 * @summary Add C2 x86 Superword support for scalar product reduction optimizations : int test

 * @requires os.arch=="x86" | os.arch=="i386" | os.arch=="amd64" | os.arch=="x86_64" | os.arch=="aarch64"

 *

 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+SuperWordReductions -XX:LoopUnrollLimit=250 -XX:CompileThresholdScaling=0.1 -XX:CompileCommand=exclude,ReductionPerf::main ReductionPerf

 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-SuperWordReductions -XX:LoopUnrollLimit=250 -XX:CompileThresholdScaling=0.1 -XX:CompileCommand=exclude,ReductionPerf::main ReductionPerf

 */

public class ReductionPerf {

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

    int[] a1 = new int[8*1024];

    int[] a2 = new int[8*1024];

    int[] a3 = new int[8*1024];

    long[] b1 = new long[8*1024];

    long[] b2 = new long[8*1024];

    long[] b3 = new long[8*1024];

    float[] c1 = new float[8*1024];

    float[] c2 = new float[8*1024];

    float[] c3 = new float[8*1024];

    double[] d1 = new double[8*1024];

    double[] d2 = new double[8*1024];

    double[] d3 = new double[8*1024];

    ReductionInit(a1,a2,a3,b1,b2,b3,c1,c2,c3,d1,d2,d3);

    int    sumIv = sumInt(a1,a2,a3);

    long   sumLv = sumLong(b1,b2,b3);

    float  sumFv = sumFloat(c1,c2,c3);

    double sumDv = sumDouble(d1,d2,d3);

    int    mulIv = prodInt(a1,a2,a3);

    long   mulLv = prodLong(b1,b2,b3);

    float  mulFv = prodFloat(c1,c2,c3);

    double mulDv = prodDouble(d1,d2,d3);

    int    sumI = 0;

    long   sumL = 0;

    float  sumF = 0.f;

    double sumD = 0.;

    int    mulI = 0;

    long   mulL = 0;

    float  mulF = 0.f;

    double mulD = 0.;

    System.out.println("Warmup ...");

    long  start = System.currentTimeMillis();

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

      sumI = sumInt(a1,a2,a3);

      sumL = sumLong(b1,b2,b3);

      sumF = sumFloat(c1,c2,c3);

      sumD = sumDouble(d1,d2,d3);

      mulI = prodInt(a1,a2,a3);

      mulL = prodLong(b1,b2,b3);

      mulF = prodFloat(c1,c2,c3);

      mulD = prodDouble(d1,d2,d3);

    }

    long stop = System.currentTimeMillis();

    System.out.println(" Warmup is done in " + (stop - start) + " msec");

    if (sumIv != sumI) {

      System.out.println("sum int:    " + sumIv + " != " + sumI);

    }

    if (sumLv != sumL) {

      System.out.println("sum long:   " + sumLv + " != " + sumL);

    }

    if (sumFv != sumF) {

      System.out.println("sum float:  " + sumFv + " != " + sumF);

    }

    if (sumDv != sumD) {

      System.out.println("sum double: " + sumDv + " != " + sumD);

    }

    if (mulIv != mulI) {

      System.out.println("prod int:    " + mulIv + " != " + mulI);

    }

    if (mulLv != mulL) {

      System.out.println("prod long:   " + mulLv + " != " + mulL);

    }

    if (mulFv != mulF) {

      System.out.println("prod float:  " + mulFv + " != " + mulF);

    }

    if (mulDv != mulD) {

      System.out.println("prod double: " + mulDv + " != " + mulD);

    }

    start = System.currentTimeMillis();

    for (int j = 0; j < 5000; j++) {

      sumI = sumInt(a1, a2 ,a3);

    }

    stop = System.currentTimeMillis();

    System.out.println("sum int:    " + (stop - start));

    start = System.currentTimeMillis();

    for (int j = 0; j < 5000; j++) {

      sumL = sumLong(b1, b2, b3);

    }

    stop = System.currentTimeMillis();

    System.out.println("sum long:   " + (stop - start));

    start = System.currentTimeMillis();

    for (int j = 0; j < 5000; j++) {

      sumF = sumFloat(c1, c2, c3);

    }

    stop = System.currentTimeMillis();

    System.out.println("sum float:  " + (stop - start));

    start = System.currentTimeMillis();

    for (int j = 0; j < 5000; j++) {

      sumD = sumDouble(d1, d2, d3);

    }

    stop = System.currentTimeMillis();

    System.out.println("sum double: " + (stop - start));

    start = System.currentTimeMillis();

    for (int j = 0; j < 5000; j++) {

      mulI = prodInt(a1, a2, a3);

    }

    stop = System.currentTimeMillis();

    System.out.println("prod int:    " + (stop - start));

    start = System.currentTimeMillis();

    for (int j = 0; j < 5000; j++) {

      mulL = prodLong(b1, b2 ,b3);

    }

    stop = System.currentTimeMillis();

    System.out.println("prod long:   " + (stop - start));

    start = System.currentTimeMillis();

    for (int j = 0; j < 5000; j++) {

      mulF = prodFloat(c1, c2, c3);

    }

    stop = System.currentTimeMillis();

    System.out.println("prod float:  " + (stop - start));

    start = System.currentTimeMillis();

    for (int j = 0; j < 5000; j++) {

      mulD = prodDouble(d1, d2, d3);

    }

    stop = System.currentTimeMillis();

    System.out.println("prod double: " + (stop - start));

  }

  public static void ReductionInit(int[]    a1, int[]    a2, int[]    a3,

                                   long[]   b1, long[]   b2, long[]   b3,

                                   float[]  c1, float[]  c2, float[]  c3,

                                   double[] d1, double[] d2, double[] d3 ) {

    for(int i = 0; i < a1.length; i++) {

      a1[i] =          (i + 0);

      a2[i] =          (i + 1);

      a3[i] =          (i + 2);

      b1[i] =   (long) (i + 0);

      b2[i] =   (long) (i + 1);

      b3[i] =   (long) (i + 2);

      c1[i] =  (float) (i + 0);

      c2[i] =  (float) (i + 1);

      c3[i] =  (float) (i + 2);

      d1[i] = (double) (i + 0);

      d2[i] = (double) (i + 1);

      d3[i] = (double) (i + 2);

    }

  }

  public static int sumInt(int[] a1, int[] a2, int[] a3) {

    int total = 0;

    for(int i = 0; i < a1.length; i++) {

      total += (a1[i] * a2[i]) + (a1[i] * a3[i]) + (a2[i] * a3[i]);

    }

    return total;

  }

  public static long sumLong(long[] b1, long[] b2, long[] b3) {

    long total = 0;

    for(int i = 0; i < b1.length; i++) {

      total += (b1[i] * b2[i]) + (b1[i] * b3[i]) + (b2[i] * b3[i]);

    }

    return total;

  }

  public static float sumFloat(float[] c1, float[] c2, float[] c3) {

    float total = 0;

    for(int i = 0; i < c1.length; i++) {

      total += (c1[i] * c2[i]) + (c1[i] * c3[i]) + (c2[i] * c3[i]);

    }

    return total;

  }

  public static double sumDouble(double[] d1, double[] d2, double[] d3) {

    double total = 0;

    for(int i = 0; i < d1.length; i++) {

      total += (d1[i] * d2[i]) + (d1[i] * d3[i]) + (d2[i] * d3[i]);

    }

    return total;

  }

  public static int prodInt(int[] a1, int[] a2, int[] a3) {

    int total = 1;

    for(int i = 0; i < a1.length; i++) {

      total *= (a1[i] * a2[i]) + (a1[i] * a3[i]) + (a2[i] * a3[i]);

    }

    return total;

  }

  public static long prodLong(long[] b1, long[] b2, long[] b3) {

    long total = 1;

    for(int i = 0; i < b1.length; i++) {

      total *= (b1[i] * b2[i]) + (b1[i] * b3[i]) + (b2[i] * b3[i]);

    }

    return total;

  }

  public static float prodFloat(float[] c1, float[] c2, float[] c3) {

    float total = 1;

    for(int i = 0; i < c1.length; i++) {

      total *= (c1[i] * c2[i]) + (c1[i] * c3[i]) + (c2[i] * c3[i]);

    }

    return total;

  }

  public static double prodDouble(double[] d1, double[] d2, double[] d3) {

    double total = 1;

    for(int i = 0; i < d1.length; i++) {

      total *= (d1[i] * d2[i]) + (d1[i] * d3[i]) + (d2[i] * d3[i]);

    }

    return total;

  }

}