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A simple OCaml library for dealing with the "Big Red Intermediate Language", an educational IR used in Cornell's advanced compilers course CS6120.

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Bril OCaml

A simple OCaml library for dealing with the "Big Red Intermediate Language", an educational IR used in Cornell's advanced compilers course CS6120.

Why

The Bril GitHub contains an OCaml library already, why did you make this one?

The existing OCaml library has "too many" features. When it loads up a Bril program, it constructs the basic blocks for you. Moreover, it implements a lot of the features that a new student would like to implement on their own.

This library does nothing but load up Bril programs into a "raw" AST-like data structure, and that's it.

Usage

You can pin this library with opam:

opam pin add bril git://github.com/FinleyMcIlwaine/bril-ocaml#core

The command above will pin the core branch of this repo, which only has support for the "core" Bril language. If you would like to have types for the extensions mentioned in the official repository (memory, floating points, and speculative execution), you can run:

opam pin add bril git://github.com/FinleyMcIlwaine/bril-ocaml#extended

That command will pin the extended branch of this repo that has support for those features.

Once you've pinned it, you can include it in your Dune files as bril and use it just as you would any other dependency!

The main function is the Bril.from_json function, which loads a Bril program in its JSON representation into the AST provided by this library. From there, you can follow along with CS6120 and implement all the cool compiler stuff on your own!

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A simple OCaml library for dealing with the "Big Red Intermediate Language", an educational IR used in Cornell's advanced compilers course CS6120.

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