[PATCH] D89443: [PowerPC][AIX] Make `__vector [un]signed long` an error

[Hubert Tong via Phabricator via cfe-commits]

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The semantics associated with `__vector [un]signed long` are neither consistently specified nor consistently implemented. The IBM XL compilers on AIX traditionally treated these as deprecated aliases for the corresponding `__vector int` type in both 32-bit and 64-bit modes. The newer, Clang-based, IBM XL compilers on AIX make usage of the previously deprecated types an error. This is also consistent with IBM XL C/C++ for Linux on Power (on little endian distributions).

In line with the above, this patch upgrades (on AIX) the deprecation of `__vector long` to become removal.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D89443

Files:
  clang/lib/Sema/DeclSpec.cpp
  clang/test/Parser/altivec.c
  clang/test/Parser/cxx-altivec.cpp

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