Mosa.Compiler.Framework.Context.Empty C# (CSharp) Method

        public void Empty()
        {
            Node.Empty();
        }

        /// <summary>
        /// Visitation function for <see cref="IX86Visitor.Mov"/> instructions.
        /// </summary>
        /// <param name="context">The context.</param>
        public void Mov(Context context)
        {
            if (context.Result.IsCPURegister && context.Operand1.IsCPURegister && context.Result.Register == context.Operand1.Register)
            {
                context.Empty();
                return;
            }

            // Mov can not use ESI or EDI registers with 8 or 16 bit memory or register
            if (context.Operand1.IsCPURegister && (context.Result.IsMemoryAddress || context.Result.IsCPURegister)
                && (context.Result.IsByte || context.Result.IsShort || context.Result.IsChar || context.Result.IsBoolean)
                && (context.Operand1.Register == GeneralPurposeRegister.ESI || context.Operand1.Register == GeneralPurposeRegister.EDI))
            {
                Operand source = context.Operand1;
                Operand dest = context.Result;

                var replace = (dest.IsMemoryAddress && dest.EffectiveOffsetBase == GeneralPurposeRegister.EAX)
                        ? GeneralPurposeRegister.EBX : GeneralPurposeRegister.EAX;

                Operand reg = Operand.CreateCPURegister(TypeSystem.BuiltIn.I4, replace);

                context.SetInstruction2(X86.Xchg, reg, source, source, reg);
                context.AppendInstruction(X86.Mov, dest, reg);
                context.AppendInstruction2(X86.Xchg, source, reg, reg, source);
            }
        }