[Clang][HIP] Deprecate __hip_atomic_* builtins (#189897) Emit deprecation warnings for all __hip_atomic_* builtins, pointing users to their __scoped_atomic_* equivalents. The warning is ignored by default, and can be enabled with -Whip-deprecated-builtins. It will be turned on by default eventually after we have cleaned up all ROCm/HIP headers and put a deprecation schedule in place. Also provide a fixit when the scope is a compile-time constant and there is a direct mapping from the HIP builtin to a Clang builtin. The compare_exchange builtins differ in how they accept the desired value, so only a warning (without a fixit) is emitted for those. This makes #185408 almost redundant for HIP, since the HIP scopes themselves will disappear once the `__hip_*` builtins are gone. OpenCL is different because the language itself specifies an enum. A simpler version of #185408 can be used to emit a warning when Sema recognizes that a non-OpenCL builtin is being passed an OpenCL scope. Assisted-By: Claude Opus 4.6
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.
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.
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.