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Only set EIGEN_CONSTEXPR_ARE_DEVICE_FUNC for clang++ if cxx_relaxed_constexpr is available.

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This commit is contained in:
Rasmus Munk Larsen 2018-10-18 16:55:02 -07:00
parent dda68f56ec
commit d8f285852b
1 changed files with 3 additions and 6 deletions
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9
Eigen/src/Core/util/Macros.h
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@ -654,12 +654,9 @@
#ifdef __CUDACC_RELAXED_CONSTEXPR__
#define EIGEN_CONSTEXPR_ARE_DEVICE_FUNC
#endif
// See bug 1580: clang/CUDA fails to make the following calls
// to constexpr bool std::equal_to::operator() even when
// EIGEN_CONSTEXPR_ARE_DEVICE_FUNC is defined in c++14 only.
// #elif defined(__clang__) && defined(__CUDA__) && EIGEN_HAS_CONSTEXPR == 1
// // clang++ always considers constexpr functions as implicitly __host__ __device__
// #define EIGEN_CONSTEXPR_ARE_DEVICE_FUNC
#elif defined(__clang__) && defined(__CUDA__) && __has_feature(cxx_relaxed_constexpr)
// clang++ always considers constexpr functions as implicitly __host__ __device__
#define EIGEN_CONSTEXPR_ARE_DEVICE_FUNC
#endif
#endif