
In certain cases, the SDK headers declare `OSSpinLock*` APIs as macros (instead of functions), so users can be transparently forwarded to non-deprecated APIs. When enabled, building of TSan interceptors failed because these macros interfere with the interceptor machinery, i.e., they prevent proper forward declaration of intercepted APIs. In a previous change [1], we misattributed this to the deprecation of `OSSpinLock*` APIs. [1] ae484c21c05668f84b13304c28bc39f753e493de rdar://143193907
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.
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