ReturnStatement.cs

namespace MiniSharpCompiler
{
    using LLVMSharp;
    using Microsoft.CodeAnalysis;
    using Microsoft.CodeAnalysis.CSharp;
    using Microsoft.CodeAnalysis.CSharp.Syntax;

    public partial class LLVMIRGenerationVisitor
    {
        /// <summary>
        /// 8.9.4
        /// </summary>
        public override void VisitReturnStatement(ReturnStatementSyntax node)
        {
            var returnType = this.semanticModel.GetTypeInfo(node.Expression);
            if (returnType.Type.SpecialType == SpecialType.System_Void)
            {
                LLVM.BuildRetVoid(this.builder);
            }
            else
            {
                LLVM.BuildRet(this.builder, this.Pop(node.Expression));
            }

            LLVM.PositionBuilderAtEnd(this.builder, LLVM.AppendBasicBlock(this.function, "UnreachableReturn"));
        }
    }
}