[ORC-RT] Initial check-in for a new, top-level ORC runtime project. (#113499 )

Includes CMake files and placeholder header, library, test tool, regression
test and unit test.

The aim for this project is to create a replacement for the existing ORC
Runtime that currently resides in `llvm-project/compiler-rt/lib/orc`. The new
project will provide a superset of the original features, and the old runtime
will be removed once the new runtime is sufficiently developed.

See discussion at
https://discourse.llvm.org/t/rfc-move-orc-executor-support-into-top-level-project/81049

2025-08-19 10:56:18 +10:00

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LLVM ORC Runtime

Overview

The ORC runtime provides executor-side support code for the LLVM ORC APIs.

.. toctree::
   :titlesonly:

   Building-orc-rt

Current Status

The ORC Runtime is a new, experimental project. It is being actively developed, and neither the ABI nor API are stable. LLVM ORC API clients should be careful to use an ORC Runtime from the same build as their LLVM ORC libraries.

Platform and Compiler Support

TODO

The following minimum compiler versions are strongly recommended.

Clang 16 and above

Anything older may work.

Notes and Known Issues

TODO

Getting Involved

First please review our Developer's Policy and Getting started with LLVM.

Bug Reports

If you think you've found a bug in the ORC Runtime, please report it using the LLVM bug tracker. Please use the tag "orc-rt" for new threads.

Patches

If you want to contribute a patch to th ORC runtime, please start by reading the LLVM documentation about contributing.

Discussion and Questions

TODO

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