#ir #compiler


Compiler Infrastructure for Hardware Accelerator Generation

3 unstable releases

new 0.7.1 Feb 29, 2024
0.6.1 Oct 15, 2023
0.6.0 Aug 31, 2023

#683 in Programming languages

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Used in calyx

Custom license

12K SLoC

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A Compiler Infrastructure for Accelerator Generators

Calyx is an intermediate language and infrastructure for building compilers that generate custom hardware accelerators.

See the Calyx website, language documentation and the documentation for the source code for more information. Calyx's design is based on our paper.



If you want to try out the compiler, install it using cargo:

cargo install calyx

This will install the calyx binary can optimize and compile Calyx programs to Verilog or CIRCT.

Follow the getting started instructions.


This repository contains the source code for the following:

  • calyx-utils: Utilities for the Calyx compiler
  • calyx-frontend: Parser and frontend AST for the Calyx language.
  • calyx-ir: The Calyx intermediate language.
  • calyx-opt: Optimizations for the Calyx intermediate language.
  • calyx: The Calyx compiler driver.

You can also use the Calyx compiler as a library and implement your own optimizations. To do this, check out the example provided by the calyx-opt crate.


~148K SLoC