[PATCH] D28322: [CUDA] More correctly inherit primitive types from the host during device compilation.

[Justin Lebar via Phabricator via cfe-commits]

jlebar created this revision.
jlebar added a reviewer: tra.
jlebar added a subscriber: cfe-commits.

CUDA lets users share structs between the host and device, so for that
and other reasons, primitive types such as ptrdiff_t should be the same
on both sides of the compilation.

Our code to do this wasn't entirely successful.  In particular, we did a
bunch of work during the NVPTXTargetInfo constructor, only to override
it in the NVPTX{32,64}TargetInfo constructors.  It worked well enough on
Linux and Mac, but Windows is LLP64, which is different enough to break
it.

This patch removes the NVPTX{32,64}TargetInfo classes entirely and fixes
the bug described above.


https://reviews.llvm.org/D28322

Files:
  clang/lib/Basic/Targets.cpp
  clang/test/Preprocessor/cuda-types.cu

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