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Matthew Flatt f5895ebc97 Chez Scheme arm32: avoid bouncing in label-address assignment 
The A32 instruction set has an interesting encoding of immediate
values where a larger value sometimes fits in a smaller set of
instructions. That turns out to be a bad property for loading a return
address, because it means that the as label computations push code
further away, a contracting return-address calculation can pull code
back nearer, and this push-and-pull can keep the label allocator from
arriving at a fixpoint.

This became a bigger problem with 8834597c1f, which creates
return-label references that go backwards and where the offset can be
much larger than the normal, forward references.
2020-09-02 18:37:15 -06:00
.github GitHub issues: add contact links back to racket users and slack 2020-09-01 07:17:28 -06:00
pkgs add documentation for datum and syntax variables, attributes 2020-09-02 20:21:44 +02:00
racket Chez Scheme arm32: avoid bouncing in label-address assignment 2020-09-02 18:37:15 -06:00
.gitattributes
.gitignore Fix typo. 2019-06-21 12:32:37 -05:00
.lgtm.yml Fetch PB to start LGTM build 2020-08-07 12:17:17 +02:00
.mailmap Minor metadata changes. 2019-10-15 08:09:32 -04:00
.makefile makefile: adjust pb fetch for older git clients 2020-08-15 07:46:11 -06:00
build.md fix typo 2020-08-20 18:39:33 -06:00
LICENSE Recent GMP is under LGPL v3. 2020-05-01 22:26:25 -04:00
Makefile makefile: adjust pb fetch for older git clients 2020-08-15 07:46:11 -06:00
README.md fix broken build guide link 2020-07-20 09:02:28 -04:00

README.md

Racket is a general-purpose programming language and an ecosystem for language-oriented programming.

This repository holds the source code for the core of Racket plus some related packages. The rest of the Racket distribution source code is in other repositories, mostly under the Racket GitHub organization.

Quick Start

Pre-built versions of Racket for a variety of operating systems and architectures, as well as convenient source distributions are available at

https://download.racket-lang.org

Racket comes with extensive documentation, including several tutorials. You can read all of this documentation, as well as documentation for third-party packages at

https://docs.racket-lang.org

Building from Source

For information on building Racket from this repository, see the Build Guide.

Contributing

Contribute to Racket by submitting a pull request, joining the development mailing list, or visiting the IRC or Slack channels.

By making a contribution, you are agreeing that your contribution is licensed under the LGPLv3, Apache 2.0, and MIT licenses. Those licenses are available in this repository in the files racket/src/LICENSE-LGPL.txt, racket/src/LICENSE-APACHE.txt, and racket/src/LICENSE-MIT.txt.

See the Racket Build Guide for more guidance on contributing.

The Friendly Environment Policy contains guidelines on expected behavior within the Racket community.

License

Racket is free software; see LICENSE for more details.