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

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 */

/**

 * @test

 * @bug 8074981

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

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

 *

 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250

 *      -XX:CompileThresholdScaling=0.1

 *      -XX:+SuperWordReductions

 *      -XX:LoopMaxUnroll=2

 *      compiler.loopopts.superword.ProdRed_Float

 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250

 *      -XX:CompileThresholdScaling=0.1

 *      -XX:-SuperWordReductions

 *      -XX:LoopMaxUnroll=2

 *      compiler.loopopts.superword.ProdRed_Float

 *

 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250

 *      -XX:CompileThresholdScaling=0.1

 *      -XX:+SuperWordReductions

 *      -XX:LoopMaxUnroll=4

 *      compiler.loopopts.superword.ProdRed_Float

 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250

 *      -XX:CompileThresholdScaling=0.1

 *      -XX:-SuperWordReductions

 *      -XX:LoopMaxUnroll=4

 *      compiler.loopopts.superword.ProdRed_Float

 *

 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250

 *      -XX:CompileThresholdScaling=0.1

 *      -XX:+SuperWordReductions

 *      -XX:LoopMaxUnroll=8

 *      compiler.loopopts.superword.ProdRed_Float

 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250

 *      -XX:CompileThresholdScaling=0.1

 *      -XX:-SuperWordReductions

 *      -XX:LoopMaxUnroll=8

 *      compiler.loopopts.superword.ProdRed_Float

 *

 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250

 *      -XX:CompileThresholdScaling=0.1

 *      -XX:+SuperWordReductions

 *      -XX:LoopMaxUnroll=16

 *      compiler.loopopts.superword.ProdRed_Float

 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250

 *      -XX:CompileThresholdScaling=0.1

 *      -XX:-SuperWordReductions

 *      -XX:LoopMaxUnroll=16

 *      compiler.loopopts.superword.ProdRed_Float

 */

package compiler.loopopts.superword;

public class ProdRed_Float {

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

        float[] a = new float[256 * 1024];

        float[] b = new float[256 * 1024];

        prodReductionInit(a, b);

        float valid = 2000;

        float total = 0;

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

            total = j + 1;

            total = prodReductionImplement(a, b, total);

        }

        if (total == valid) {

            System.out.println("Success");

        } else {

            System.out.println("Invalid sum of elements variable in total: " + total);

            System.out.println("Expected value = " + valid);

            throw new Exception("Failed");

        }

    }

    public static void prodReductionInit(float[] a, float[] b) {

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

            a[i] = i + 2;

            b[i] = i + 1;

        }

    }

    public static float prodReductionImplement(float[] a, float[] b, float total) {

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

            total *= a[i] - b[i];

        }

        return total;

    }

}