[PATCH] D24975: [CUDA] Add #pragma clang force_cuda_host_device_{begin, end} pragmas.

[Justin Lebar via cfe-commits]

jlebar created this revision.
jlebar added a reviewer: rsmith.
jlebar added subscribers: cfe-commits, jhen, tra.

These cause us to consider all functions in-between to be __host__
__device__.

You can nest these pragmas; you just can't have more 'end's than
'begin's.

https://reviews.llvm.org/D24975

Files:
  clang/include/clang/Basic/DiagnosticParseKinds.td
  clang/include/clang/Parse/Parser.h
  clang/include/clang/Sema/Sema.h
  clang/lib/Parse/ParsePragma.cpp
  clang/lib/Sema/SemaCUDA.cpp
  clang/test/Parser/cuda-force-host-device.cu

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