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/**
 * @test
 * @bug 8310886
 * @requires os.arch == "x86_64" | os.arch == "aarch64"
 * @summary Test MulAddS2I vectorization.
 * @library /test/lib /
 * @run driver compiler.loopopts.superword.TestMulAddS2I
 */

package compiler.loopopts.superword;

import compiler.lib.ir_framework.*;
import jdk.test.lib.Asserts;
import jdk.test.lib.Platform;

public class TestMulAddS2I {
    static final int RANGE = 1024;
    static final int ITER  = RANGE/2 - 1;

    static short[] sArr1 = new short[RANGE];
    static short[] sArr2 = new short[RANGE];
    static final int[] GOLDEN;

    static {
        for (int i = 0; i < RANGE; i++) {
            sArr1[i] = (short)(AbstractInfo.getRandom().nextInt());
            sArr2[i] = (short)(AbstractInfo.getRandom().nextInt());
        }
        GOLDEN = test();
    }


    public static void main(String[] args) {
        if (Platform.isX64() || Platform.isX86()) {
            TestFramework.runWithFlags("-XX:+UseUnalignedLoadStores");
            TestFramework.runWithFlags("-XX:-UseUnalignedLoadStores");
        } else {
            TestFramework.run();
        }
    }

    @Run(test = "test")
    @Warmup(0)
    public static void run() {
        compare(test());
    }

    public static void compare(int[] out) {
        for (int i = 0; i < ITER; i++) {
            Asserts.assertEQ(out[i], GOLDEN[i], "wrong result for out[" + i + "]");
        }
    }

    @Test
    @IR(applyIfCPUFeature = {"sse2", "true"}, applyIf = {"UseUnalignedLoadStores", "true"},
        counts = {IRNode.MUL_ADD_S2I, "> 0", IRNode.MUL_ADD_VS2VI, "> 0"})
    @IR(applyIfCPUFeature = {"sse2", "true"}, applyIf = {"UseUnalignedLoadStores", "false"},
        failOn = {IRNode.MUL_ADD_VS2VI}, // Can only pack LoadS if UseUnalignedLoadStores is true (default if sse4.2)
        counts = {IRNode.MUL_ADD_S2I, "> 0"})
    @IR(applyIfCPUFeature = {"asimd", "true"}, applyIf = {"MaxVectorSize", "16"}, // AD file requires vector_length = 16
            counts = {IRNode.MUL_ADD_S2I, "> 0", IRNode.MUL_ADD_VS2VI, "> 0"})
    @IR(applyIfCPUFeature = {"avx512_vnni", "true"}, applyIf = {"UseUnalignedLoadStores", "true"},
            counts = {IRNode.MUL_ADD_S2I, "> 0", IRNode.MUL_ADD_VS2VI_VNNI, "> 0"})
    public static int[] test() {
        int[] out = new int[ITER];
        int[] out2 = new int[ITER];
        for (int i = 0; i < ITER; i++) {
            out[i] += ((sArr1[2*i] * sArr1[2*i]) + (sArr1[2*i+1] * sArr1[2*i+1]));
            out2[i] += out[i];
        }
        return out;
    }
}