5cc87b424b
If `-allow-incomplete-ir` is enabled, automatically insert declarations for missing globals. If a global is only used in calls with the same function type, insert a function declaration with that type. Otherwise, insert a dummy i8 global. The fallback case could be extended with various heuristics (e.g. we could look at load/store types), but I've chosen to keep it simple for now, because I'm unsure to what degree this would really useful without more experience. I expect that in most cases the declaration type doesn't really matter (note that the type of an external global specifies a *minimum* size only, not a precise size). This is a followup to https://github.com/llvm/llvm-project/pull/78421.
The LLVM Compiler Infrastructure
Welcome to the LLVM project!
This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
The LLVM project has multiple components. The core of the project is itself called "LLVM". This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.
C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM.
Other components include: the libc++ C++ standard library, the LLD linker, and more.
Getting the Source Code and Building LLVM
Consult the Getting Started with LLVM page for information on building and running LLVM.
For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.
Getting in touch
Join the LLVM Discourse forums, Discord chat, LLVM Office Hours or Regular sync-ups.
The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.