[PATCH] D84743: [Clang][AMDGCN] Universal device offloading macros header

[Saiyedul Islam via Phabricator via cfe-commits]

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Fixed clang-tidy warnings.


This header creates macros  _DEVICE_ARCH and _DEVICE_GPU with values. This
header exists because compiler macros are inconsistent in specifying if a
compiliation is a device pass or a host pass. There is also inconsistency in
how the device architecture and type are specified during a device pass. The
inconsistencies are between OpenMP, CUDA, HIP, and OpenCL. The macro logic
in this header is aware of these inconsistencies and sets useful values for
_DEVICE_ARCH and _DEVICE_GPU during a device compilation. The macros will
not be defined during a host compilation pass. So "#ifndef _DEVICE_ARCH" can
be used by users to imply a host compilation. This header must remain a
preprocessing header only because it is intended to be used by different
languages.

Originally authored by Greg Rodgers (@gregrodgers).


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D84743

Files:
  clang/lib/Headers/offload_macros.h

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