The Inner Workings of C# Compilation: From Source Code to Assembly

The process of compiling C# source code into machine code involves several steps, which can be summarized as follows:

Before reaching the type system, it's essential to understand how C# source code is compiled into machine code. This consists of the following stages:

1. **Compilation by Roslyn**: The Roslyn compiler compiles the C# source code into a DLL file, which contains metadata and Intermediate Language (IL) code.
2. **Loading and Metadata Construction**: The loader uses the metadata within the DLL to construct the type system's data structures.
3. **Just-In-Time (JIT) Compilation**: The JIT compiler, which operates on IL code, generates assembly code in a lazy-loading manner, meaning that it only compiles and loads the necessary code as it is needed for execution.

In short, the compilation of C# source code involves the use of metadata to construct the type system and the JIT compiler to generate assembly code. This process allows for efficient and dynamic compilation of C# code into machine code.