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README.md

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 # Mini C Compiler (MCC)
 
 Working-in-progress C compiler written in C. My goal is to make it able to self-host.
+
+## Current Features
+
+The mcc compiler follows a standard batch-compiler architecture, consisting of the following components:
+
+- **Frontend**: lexers and parsers to transform C source file
+  into [AST](https://en.wikipedia.org/wiki/Abstract_syntax_tree)
+- **IR Generation**: Converts the AST into
+  a [three-address code intermediate representation](https://en.wikipedia.org/wiki/Three-address_code).
+- **Assembly Generation**: Translates the intermediate representation into x86-64 assembly code.
+
+`mcc` invokes `gcc` for preprocessor, assembler, and linker. Only Linux is supported and tested.
+
+At present, only a small subset of the C language is supported. You can find example programs demonstrating the
+compiler’s capabilities in the [test/test_data](./test/test_data) directory. Additionally, mcc does not yet implement
+any optimization and currently produces extremely inefficient code with no regard for performance.