A simple brainfuck interpreter with loop optimization.
To try this, you have to install nimlang (https://nim-lang.org/).
$ git clone https://github.com/d2verb/brainfuck
$ cd brainfuck
$ nimble build -d:release
$ ./brainfuck interpret examples/helloworld.b
Hello World!
hanoi.b
$ time ./brainfuck interpret exmaples/hanoi.b
./brainfuck interpret examples/hanoi.b 20.50s user 0.01s system 99% cpu 20.513 total
$ time ./brainfuck interpret --jit exmaples/hanoi.b
./brainfuck interpret --jit examples/hanoi.b 14.09s user 0.04s system 99% cpu 14.132 total
Winner is JIT version.
hanoi.b(build with release mode)
$ time ./brainfuck interpret exmaples/hanoi.b
./brainfuck interpret examples/hanoi.b 5.74s user 0.00s system 99% cpu 5.749 total
$ time ./brainfuck interpret --jit exmaples/hanoi.b
./brainfuck interpret --jit examples/hanoi.b 14.04s user 0.04s system 99% cpu 14.082 total
Winner is normal version.
| build mode | normal | JIT |
|---|---|---|
| none | 20.50s | 14.09s |
| release | 5.749s | 14.04s |
[1] http://howistart.org/posts/nim/1/index.html
[2] https://postd.cc/adventures-in-jit-compilation-part-1-an-interpreter/