[PATCH] D124866: [CUDA][HIP] support __noinline__ as keyword

[Yaxun Liu via Phabricator via cfe-commits]

yaxunl created this revision.
yaxunl added a reviewer: tra.
Herald added a reviewer: aaron.ballman.
Herald added subscribers: mattd, carlosgalvezp, dexonsmith.
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yaxunl requested review of this revision.

CUDA/HIP programs use `__noinline__` like a keyword e.g.
`__noinline__ void foo() {}` since `__noinline__` is defined
as a macro `__attribute__((noinline))` in CUDA/HIP runtime
header files.

However, gcc and clang supports `__attribute__((__noinline__))`
the same as `__attribute__((noinline))`. Some C++ libraries
use `__attribute__((__noinline__))` in their header files.
When CUDA/HIP programs include such header files,
clang will emit error about invalid attributes.

This patch fixes this issue by supporting `__noinline__` as
a keyword, so that CUDA/HIP runtime could remove
the macro definition.


https://reviews.llvm.org/D124866

Files:
  clang/include/clang/Basic/Attr.td
  clang/include/clang/Basic/TokenKinds.def
  clang/include/clang/Parse/Parser.h
  clang/lib/Basic/IdentifierTable.cpp
  clang/lib/Parse/ParseDecl.cpp
  clang/test/CodeGenCUDA/noinline.cu
  clang/test/SemaCUDA/noinline.cu

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