[CUDA] Don't define __NVCC__.

Summary:
We decided this makes life too difficult for code authors.  For example,
people may want to detect NVCC and disable variadic templates, which
NVCC does not support, but which we do.

Since people are going to have to change compiler flags *anyway* in
order to compile with clang, if they really want the old behavior, they
can pass -D__NVCC__.

Tested with tensorflow and thrust, no apparent problems.

Reviewers: tra

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D18417

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@264205 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Headers/__clang_cuda_runtime_wrapper.h b/lib/Headers/__clang_cuda_runtime_wrapper.h
index 8753a8ce6e464eccf6cee6c436a6b7aea5c604b2..95d1f5fa0112a34d65da7c51dadafe068c5078c4 100644 (file)
--- a/lib/Headers/__clang_cuda_runtime_wrapper.h
+++ b/lib/Headers/__clang_cuda_runtime_wrapper.h
@@ -199,7 +199,6 @@ static inline __device__ void __brkpt(int __c) { __brkpt(); }
 // Set up compiler macros expected to be seen during compilation.
 #undef __CUDABE__
 #define __CUDACC__
-#define __NVCC__
 
 #if defined(__CUDA_ARCH__)
 // We need to emit IR declaration for non-existing __nvvm_reflect() to