// Copyright (c) Six Labors.
// Licensed under the Six Labors Split License.

using System.Numerics;
using BenchmarkDotNet.Attributes;

namespace SixLabors.ImageSharp.Benchmarks.General.Vectorization;

public class BitwiseOrUInt32
{
    private uint[] input;

    private uint[] result;

    [Params(32)]
    public int InputSize { get; set; }

    private uint testValue;

    [GlobalSetup]
    public void Setup()
    {
        this.input = new uint[this.InputSize];
        this.result = new uint[this.InputSize];
        this.testValue = 42;

        for (int i = 0; i < this.InputSize; i++)
        {
            this.input[i] = (uint)i;
        }
    }

    [Benchmark(Baseline = true)]
    public void Standard()
    {
        uint v = this.testValue;
        for (int i = 0; i < this.input.Length; i++)
        {
            this.result[i] = this.input[i] | v;
        }
    }

    [Benchmark]
    public void Simd()
    {
        Vector<uint> v = new(this.testValue);

        for (int i = 0; i < this.input.Length; i += Vector<uint>.Count)
        {
            Vector<uint> a = new(this.input, i);
            a = Vector.BitwiseOr(a, v);
            a.CopyTo(this.result, i);
        }
    }
}