README.md 970 B
About
This is a minimal compiler for the
Brainfuck language, written for the
purpose of practicing Ocaml LLVM bindings and seeing how well LLVM optimizes
arrays. Brainfuck commands are transformed to LLVM IR, which is generated in
such a way that it is easy to optimize for LLVM's opt utility.
Building and usage
Building the bf compiler (Debian dependencies):
$ sudo apt-get install ocaml llvm-3.4 libllvm-3.4-ocaml-dev
$ make
Building a brainfuck program (plain and optimized):
$ make hello hello-opt # compile file "hello.b" to binaries
$ ./hello
Hello World!
$ ./hello-opt
Hello World!
Quick compilation and running (deletes temporary binary after running):
$ echo ++++++++++++. | ./run.sh
$ ./run.sh < hello.b
Hello World!
Examining generated LLVM:
$ echo ++++++++++++. | ./bf
...
$ echo ++++++++++++. | ./bf | opt -O3 -S
...