Today, LLVM's C API is more or less a stable API, but we don't have very well defined policies on how this works. Some users of llvm-c want stable API interfaces into various parts of the LLVM infrasture, others want further ABI guarantees about this usage, and still others simply want a way to bind to LLVM through their language frontend’s existing FFI support for C.
If we want to improve the situation for any of these users, we need to properly understand how these APIs are being used (or abused) today. This BoF will serve to allow the various stakeholders to explain what they need so that we can design future extensions properly and come up with well defined policies on how to maintain and evolve the C API.
