diff options
Diffstat (limited to 'gnu/llvm/tools/clang/lib/Headers/cuda_wrappers/algorithm')
| -rw-r--r-- | gnu/llvm/tools/clang/lib/Headers/cuda_wrappers/algorithm | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/gnu/llvm/tools/clang/lib/Headers/cuda_wrappers/algorithm b/gnu/llvm/tools/clang/lib/Headers/cuda_wrappers/algorithm deleted file mode 100644 index 01af18360d8..00000000000 --- a/gnu/llvm/tools/clang/lib/Headers/cuda_wrappers/algorithm +++ /dev/null @@ -1,116 +0,0 @@ -/*===---- complex - CUDA wrapper for <algorithm> ----------------------------=== - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - * - *===-----------------------------------------------------------------------=== - */ - -#ifndef __CLANG_CUDA_WRAPPERS_ALGORITHM -#define __CLANG_CUDA_WRAPPERS_ALGORITHM - -// This header defines __device__ overloads of std::min/max. -// -// Ideally we'd declare these functions only if we're <= C++11. In C++14, -// these functions are constexpr, and so are implicitly __host__ __device__. -// -// However, the compiler being in C++14 mode does not imply that the standard -// library supports C++14. There is no macro we can test to check that the -// stdlib has constexpr std::min/max. Thus we have to unconditionally define -// our device overloads. -// -// A host+device function cannot be overloaded, and a constexpr function -// implicitly become host device if there's no explicitly host or device -// overload preceding it. So the simple thing to do would be to declare our -// device min/max overloads, and then #include_next <algorithm>. This way our -// device overloads would come first, and so if we have a C++14 stdlib, its -// min/max won't become host+device and conflict with our device overloads. -// -// But that also doesn't work. libstdc++ is evil and declares std::min/max in -// an internal header that is included *before* <algorithm>. Thus by the time -// we're inside of this file, std::min/max may already have been declared, and -// thus we can't prevent them from becoming host+device if they're constexpr. -// -// Therefore we perpetrate the following hack: We mark our __device__ overloads -// with __attribute__((enable_if(true, ""))). This causes the signature of the -// function to change without changing anything else about it. (Except that -// overload resolution will prefer it over the __host__ __device__ version -// rather than considering them equally good). - -#include_next <algorithm> - -// We need to define these overloads in exactly the namespace our standard -// library uses (including the right inline namespace), otherwise they won't be -// picked up by other functions in the standard library (e.g. functions in -// <complex>). Thus the ugliness below. -#ifdef _LIBCPP_BEGIN_NAMESPACE_STD -_LIBCPP_BEGIN_NAMESPACE_STD -#else -namespace std { -#ifdef _GLIBCXX_BEGIN_NAMESPACE_VERSION -_GLIBCXX_BEGIN_NAMESPACE_VERSION -#endif -#endif - -#pragma push_macro("_CPP14_CONSTEXPR") -#if __cplusplus >= 201402L -#define _CPP14_CONSTEXPR constexpr -#else -#define _CPP14_CONSTEXPR -#endif - -template <class __T, class __Cmp> -__attribute__((enable_if(true, ""))) -inline _CPP14_CONSTEXPR __host__ __device__ const __T & -max(const __T &__a, const __T &__b, __Cmp __cmp) { - return __cmp(__a, __b) ? __b : __a; -} - -template <class __T> -__attribute__((enable_if(true, ""))) -inline _CPP14_CONSTEXPR __host__ __device__ const __T & -max(const __T &__a, const __T &__b) { - return __a < __b ? __b : __a; -} - -template <class __T, class __Cmp> -__attribute__((enable_if(true, ""))) -inline _CPP14_CONSTEXPR __host__ __device__ const __T & -min(const __T &__a, const __T &__b, __Cmp __cmp) { - return __cmp(__b, __a) ? __b : __a; -} - -template <class __T> -__attribute__((enable_if(true, ""))) -inline _CPP14_CONSTEXPR __host__ __device__ const __T & -min(const __T &__a, const __T &__b) { - return __a < __b ? __a : __b; -} - -#pragma pop_macro("_CPP14_CONSTEXPR") - -#ifdef _LIBCPP_END_NAMESPACE_STD -_LIBCPP_END_NAMESPACE_STD -#else -#ifdef _GLIBCXX_BEGIN_NAMESPACE_VERSION -_GLIBCXX_END_NAMESPACE_VERSION -#endif -} // namespace std -#endif - -#endif // __CLANG_CUDA_WRAPPERS_ALGORITHM |