Remove array bound checks

[HMBSbige]

using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

public class Demo
{
    public static ref byte Baseline(byte[] array, int index)
    {
        return ref array[index];
    }
    public static ref byte Baseline(Span<byte> span, int index)
    {
        return ref span[index];
    }
    public static ref byte Span(Span<byte> span, int index)
    {
        return ref Unsafe.Add(ref MemoryMarshal.GetReference(span), index);
    }
    public static ref byte Array(byte[] array, int index)
    {
        ref var data = ref MemoryMarshal.GetArrayDataReference(array);
        return ref Unsafe.Add(ref data, index);
    }
}

Jit