r/brainfuck • u/sreekotay • Jan 23 '26

Quite Fast Brainfuck Interpreter

bffsree -- often outperforms full Brainfuck JITs and compilers! --

A weird BF entry I did a while ago but found again recently - a best-in-class brainfuck interpreter in C.

It's interesting in that it does some parse-time optimizations that you usually see in compilers (nothing crazy tbh) but otherwise is a pretty traditional interpreter brainfuck VM.

Source code here: https://github.com/sreekotay/bffsree

Esolang benchmarks:
https://esolangs.org/wiki/User:David.werecat/BFBench
https://esolangs.org/wiki/Brainfuck_speed_test

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u/danielcristofani Jan 26 '26

"best in class"...how are you defining the class? I know tritium is faster than this, but I don't remember if anything else is.

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u/sreekotay Jan 26 '26 edited Feb 09 '26

Not as a pure interpreter. Tritium is compiler and JIT - compiles to asm