# CompCert
The verified C compiler.

## Overview
The CompCert C verified compiler is a compiler for a large subset of the
C programming language that generates code for the PowerPC, ARM, x86 and
RISC-V processors.

The distinguishing feature of CompCert is that it has been formally
verified using the Coq proof assistant: the generated assembly code is
formally guaranteed to behave as prescribed by the semantics of the
source C code.

For more information on CompCert (supported platforms, supported C
features, installation instructions, using the compiler, etc), please
refer to the [Web site](http://compcert.inria.fr/) and especially
the [user's manual](http://compcert.inria.fr/man/).

## Verimag-Kalray version
This is a special version with additions from Verimag and Kalray :

* A backend for the KVX processor: see [`README_Kalray.md`](README_Kalray.md) for details.
* Some general-purpose optimization phases (e.g. profiling).
  * see [`PROFILING.md`](PROFILING.md) for details on the profiling system
	
The people responsible for this version are

* Sylvain Boulmé (Grenoble-INP, Verimag)
* David Monniaux (CNRS, Verimag)
* Cyril Six (Kalray)

## Papers, docs, etc on this CompCert version

* [a 5-minutes video](http://www-verimag.imag.fr/~boulme/videos/poster-oopsla20.mp4) by C. Six, presenting the postpass scheduling and the KVX backend
(also on [YouTube if you need subtitles](https://www.youtube.com/watch?v=RAzMDS9OVSw)).
* [Certified and Efficient Instruction Scheduling](https://hal.archives-ouvertes.fr/hal-02185883), an OOPSLA'20 paper, by Six, Boulmé and Monniaux.
* [the documentation of the KVX backend Coq sources](https://certicompil.gricad-pages.univ-grenoble-alpes.fr/compcert-kvx)

## License
CompCert is not free software.  This non-commercial release can only
be used for evaluation, research, educational and personal purposes.
A commercial version of CompCert, without this restriction and with
professional support, can be purchased from
[AbsInt](https://www.absint.com).  See the file `LICENSE` for more
information.

## Copyright
The CompCert verified compiler is Copyright Institut National de
Recherche en Informatique et en Automatique (INRIA) and 
AbsInt Angewandte Informatik GmbH.

The additions are Copyright Grenoble-INP, CNRS and Kalray.

## Contact
General discussions on CompCert take place on the
[compcert-users@inria.fr](https://sympa.inria.fr/sympa/info/compcert-users)
mailing list.

For inquiries on the commercial version of CompCert, please contact
info@absint.com

For inquiries on the Verimag-specific additions, contact the researchers.