I wanted to learn about LLVM and practice Rust, so I wrote a compiler for a toy language that mostly follows the official LLVM Kaleidoscope tutorial. There were some modifications that I made on a whim, like making function parameters comma-separated and changing the for-loop semantics slightly. The output is correct for all tutorial examples, but I haven't done much further testing.
Run interactive mode with cargo run and try the following:
>>> def binary : 1 (x, y) y
>>> def fibi(x) var a, b = 1, c in (for i = 0, i < x in c = a + b : a = b : b = c) : a
>>> fibi(10)
Some things to explore in the future:
- Cleanup (some code from the tutorial is hacky)
- More primitive types and a static type checker
- Structs and arrays
- Heap allocated data and garbage collection