john-h-k / rustfuck

A very speedy JIT compiler + interpreter for Brainfuck

MIT License

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brainfuck cli rust

readme

rustfuck

A brainfuck JIT and interpreter set

Why?

I wanted to write a brainfuck interpreter. They are inherently quite useless

What does it have?

rustfuck contains 4 interpreters as well as an optimising JIT-compiler (currently only available on AArch64).

The 4 backends:

BF interpreter - executes brainfuck, as-is
- takes around 30s on mandelbrot.b
HIR interpreter - only fuses +-s and <>s, as well as creating a branch lookup table
- takes around 5s on mandelbrot.b
LIR interpreter - additiionally performs a bunch of different loop optimisations to
- takes around 2.7s on mandelbrot.b
JIT compiler - emits raw machine code (doesn't currently support reading from STDIN)
- takes around 600ms on mandelbrot.b

There are several examples in the examples folder, including hello_world and mandelbrot.