jdk-24/test/hotspot/jtreg/compiler/loopopts/superword/RedTest_int.java

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/**
 * @test
 * @bug 8240248
 * @summary Add C2 x86 Superword support for scalar logical reduction optimizations : int test
 *
 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 *      -XX:CompileThresholdScaling=0.1
 *      -XX:-TieredCompilation
 *      -XX:+SuperWordReductions
 *      -XX:LoopMaxUnroll=2
 *      compiler.loopopts.superword.RedTest_int
 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 *      -XX:CompileThresholdScaling=0.1
 *      -XX:-SuperWordReductions
 *      -XX:LoopMaxUnroll=2
 *      compiler.loopopts.superword.RedTest_int
 *
 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 *      -XX:CompileThresholdScaling=0.1
 *      -XX:-TieredCompilation
 *      -XX:+SuperWordReductions
 *      -XX:LoopMaxUnroll=4
 *      compiler.loopopts.superword.RedTest_int
 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 *      -XX:CompileThresholdScaling=0.1
 *      -XX:-SuperWordReductions
 *      -XX:LoopMaxUnroll=4
 *      compiler.loopopts.superword.RedTest_int
 *
 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 *      -XX:CompileThresholdScaling=0.1
 *      -XX:-TieredCompilation
 *      -XX:+SuperWordReductions
 *      -XX:LoopMaxUnroll=8
 *      compiler.loopopts.superword.RedTest_int
 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 *      -XX:CompileThresholdScaling=0.1
 *      -XX:-SuperWordReductions
 *      -XX:LoopMaxUnroll=8
 *      compiler.loopopts.superword.RedTest_int
 *
 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 *      -XX:CompileThresholdScaling=0.1
 *      -XX:-TieredCompilation
 *      -XX:+SuperWordReductions
 *      -XX:LoopMaxUnroll=16
 *      compiler.loopopts.superword.RedTest_int
 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:LoopUnrollLimit=250
 *      -XX:CompileThresholdScaling=0.1
 *      -XX:-SuperWordReductions
 *      -XX:LoopMaxUnroll=16
 *      compiler.loopopts.superword.RedTest_int
 */

package compiler.loopopts.superword;

public class RedTest_int {
    static final int NUM = 1024;
    static final int ITER = 8000;
    public static void main(String[] args) throws Exception {
        int[] a = new int[NUM];
        int[] b = new int[NUM];
        int[] c = new int[NUM];
        int[] d = new int[NUM];
        reductionInit1(a, b, c);
        int total = 0;
        int valid = 0;
        for (int j = 0; j < ITER; j++) {
            total = sumReductionImplement(a, b, c, d);
        }
        for (int j = 0; j < d.length; j++) {
            valid += d[j];
        }
        testCorrectness(total, valid, "Add Reduction");

        valid = 0;
        for (int j = 0; j < ITER; j++) {
            total = orReductionImplement(a, b, c, d);
        }
        for (int j = 0; j < d.length; j++) {
            valid |= d[j];
        }
        testCorrectness(total, valid, "Or Reduction");

        valid = -1;
        for (int j = 0; j < ITER; j++) {
            total = andReductionImplement(a, b, c, d);
        }
        for (int j = 0; j < d.length; j++) {
            valid &= d[j];
        }
        testCorrectness(total, valid, "And Reduction");

        valid = -1;
        for (int j = 0; j < ITER; j++) {
            total = xorReductionImplement(a, b, c, d);
        }
        for (int j = 0; j < d.length; j++) {
            valid ^= d[j];
        }
        testCorrectness(total, valid, "Xor Reduction");

        reductionInit2(a, b, c);
        valid = 1;
        for (int j = 0; j < ITER; j++) {
            total = mulReductionImplement(a, b, c, d);
        }
        for (int j = 0; j < d.length; j++) {
            valid *= d[j];
        }
        testCorrectness(total, valid, "Mul Reduction");
    }

    public static void reductionInit1(
            int[] a,
            int[] b,
            int[] c) {
        for (int i = 0; i < a.length; i++) {
           a[i] = (i%2) + 0x4099;
           b[i] = (i%2) + 0x1033;
           c[i] = (i%2) + 0x455;
        }
    }

    public static void reductionInit2(
            int[] a,
            int[] b,
            int[] c) {
        for (int i = 0; i < a.length; i++) {
           a[i] = 0x11;
           b[i] = 0x12;
           c[i] = 0x13;
        }
    }


    public static int sumReductionImplement(
            int[] a,
            int[] b,
            int[] c,
            int[] d) {
        int total = 0;
        for (int i = 0; i < a.length; i++) {
            d[i] = (a[i] * b[i]) + (a[i] * c[i]) + (b[i] * c[i]);
            total += d[i];
        }
        return total;
    }

    public static int orReductionImplement(
            int[] a,
            int[] b,
            int[] c,
            int[] d) {
        int total = 0;
        for (int i = 0; i < a.length; i++) {
            d[i] = (a[i] * b[i]) + (a[i] * c[i]) + (b[i] * c[i]);
            total |= d[i];
        }
        return total;
    }

    public static int andReductionImplement(
            int[] a,
            int[] b,
            int[] c,
            int[] d) {
        int total = -1;
        for (int i = 0; i < a.length; i++) {
            d[i] = (a[i] * b[i]) + (a[i] * c[i]) + (b[i] * c[i]);
            total &= d[i];
        }
        return total;
    }

    public static int xorReductionImplement(
            int[] a,
            int[] b,
            int[] c,
            int[] d) {
        int total = -1;
        for (int i = 0; i < a.length; i++) {
            d[i] = (a[i] * b[i]) + (a[i] * c[i]) + (b[i] * c[i]);
            total ^= d[i];
        }
        return total;
    }

    public static int mulReductionImplement(
            int[] a,
            int[] b,
            int[] c,
            int[] d) {
        int total = 1;
        for (int i = 0; i < a.length; i++) {
            d[i] = (a[i] * b[i]) + (a[i] * c[i]) + (b[i] * c[i]);
            total = total*d[i];
        }
        return total;
    }

    public static void testCorrectness(
            int total,
            int valid,
            String op) throws Exception {
        if (total == valid) {
            System.out.println(op + ": Success");
        } else {
            System.out.println("Invalid total: " + total);
            System.out.println("Expected value = " + valid);
            throw new Exception(op + ": Failed");
        }
    }
}