ccc

a work-in-progress compiler for a tiny subset of C language.

ccc is intended to be an optimizing compiler that produces code which is faster than gcc -O1 does, and compiles faster than that.

Roadmap

• [ ] support C11 features
  • [x] arithmetic operations
  • [x] pointer arithmetic
  • [x] arrays
  • [x] type checker
    • [ ] support type qualifiers
  • [x] implicit type conversions
  • [ ] initializers
    • [x] scalar
    • [x] array
    • [ ] struct
    • [ ] designated initializers
  • [ ] a copy of struct
    • [x] local assignment
    • [ ] argument
    • [ ] return value
  • [ ] preprocessor
  • [ ] self-hosting
  • [ ] complex declarators
  • [ ] alignment specifiers
  • [ ] float-point values
• [ ] optimizations
  • [x] linear scan register allocation
  • [x] naive mem2reg
  • [x] constant folding
  • [x] copy propagation
  • [x] dead code elimination
  • [ ] tail call optimization
  • [ ] loop unwinding
• [ ] misc
  • [ ] improved error messages
  • [ ] better support of debuggers
  • [ ] support targets other than x86_64

Development

To build ccc, run:

make

You'll see a compiled binary under ./build/.

You can add DEBUG=0 to get an optimized build of ccc.

To run tests, use test target:

make test