forked from OSchip/llvm-project
180 lines
6.4 KiB
C
180 lines
6.4 KiB
C
/*===---- cuda_runtime.h - CUDA runtime support ----------------------------===
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*===-----------------------------------------------------------------------===
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*/
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#ifndef __CLANG_CUDA_RUNTIME_H__
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#define __CLANG_CUDA_RUNTIME_H__
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#if defined(__CUDA__) && defined(__clang__)
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// Include some standard headers to avoid CUDA headers including them
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// while some required macros (like __THROW) are in a weird state.
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#include <stdlib.h>
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// Preserve common macros that will be changed below by us or by CUDA
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// headers.
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#pragma push_macro("__THROW")
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#pragma push_macro("__CUDA_ARCH__")
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// WARNING: Preprocessor hacks below are based on specific of
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// implementation of CUDA-7.x headers and are expected to break with
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// any other version of CUDA headers.
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#include "cuda.h"
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#if !defined(CUDA_VERSION)
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#error "cuda.h did not define CUDA_VERSION"
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#elif CUDA_VERSION < 7000 || CUDA_VERSION > 7050
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#error "Unsupported CUDA version!"
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#endif
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// Make largest subset of device functions available during host
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// compilation -- SM_35 for the time being.
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#ifndef __CUDA_ARCH__
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#define __CUDA_ARCH__ 350
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#endif
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#include "cuda_builtin_vars.h"
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// No need for device_launch_parameters.h as cuda_builtin_vars.h above
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// has taken care of builtin variables declared in the file.
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#define __DEVICE_LAUNCH_PARAMETERS_H__
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// {math,device}_functions.h only have declarations of the
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// functions. We don't need them as we're going to pull in their
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// definitions from .hpp files.
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#define __DEVICE_FUNCTIONS_H__
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#define __MATH_FUNCTIONS_H__
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#undef __CUDACC__
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#define __CUDABE__
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// Disables definitions of device-side runtime support stubs in
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// cuda_device_runtime_api.h
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#define __CUDADEVRT_INTERNAL__
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#include "host_config.h"
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#include "host_defines.h"
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#include "driver_types.h"
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#include "common_functions.h"
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#undef __CUDADEVRT_INTERNAL__
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#undef __CUDABE__
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#define __CUDACC__
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#include_next "cuda_runtime.h"
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#undef __CUDACC__
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#define __CUDABE__
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// CUDA headers use __nvvm_memcpy and __nvvm_memset which clang does
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// not have at the moment. Emulate them with a builtin memcpy/memset.
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#define __nvvm_memcpy(s,d,n,a) __builtin_memcpy(s,d,n)
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#define __nvvm_memset(d,c,n,a) __builtin_memset(d,c,n)
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#include "crt/host_runtime.h"
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#include "crt/device_runtime.h"
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// device_runtime.h defines __cxa_* macros that will conflict with
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// cxxabi.h.
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// FIXME: redefine these as __device__ functions.
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#undef __cxa_vec_ctor
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#undef __cxa_vec_cctor
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#undef __cxa_vec_dtor
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#undef __cxa_vec_new2
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#undef __cxa_vec_new3
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#undef __cxa_vec_delete2
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#undef __cxa_vec_delete
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#undef __cxa_vec_delete3
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#undef __cxa_pure_virtual
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// We need decls for functions in CUDA's libdevice woth __device__
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// attribute only. Alas they come either as __host__ __device__ or
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// with no attributes at all. To work around that, define __CUDA_RTC__
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// which produces HD variant and undef __host__ which gives us desided
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// decls with __device__ attribute.
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#pragma push_macro("__host__")
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#define __host__
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#define __CUDACC_RTC__
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#include "device_functions_decls.h"
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#undef __CUDACC_RTC__
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// Temporarily poison __host__ macro to ensure it's not used by any of
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// the headers we're about to include.
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#define __host__ UNEXPECTED_HOST_ATTRIBUTE
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// device_functions.hpp and math_functions*.hpp use 'static
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// __forceinline__' (with no __device__) for definitions of device
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// functions. Temporarily redefine __forceinline__ to include
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// __device__.
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#pragma push_macro("__forceinline__")
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#define __forceinline__ __device__ __inline__ __attribute__((always_inline))
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#include "device_functions.hpp"
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#include "math_functions.hpp"
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#include "math_functions_dbl_ptx3.hpp"
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#pragma pop_macro("__forceinline__")
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// For some reason single-argument variant is not always declared by
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// CUDA headers. Alas, device_functions.hpp included below needs it.
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static inline __device__ void __brkpt(int c) { __brkpt(); }
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// Now include *.hpp with definitions of various GPU functions. Alas,
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// a lot of thins get declared/defined with __host__ attribute which
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// we don't want and we have to define it out. We also have to include
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// {device,math}_functions.hpp again in order to extract the other
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// branch of #if/else inside.
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#define __host__
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#undef __CUDABE__
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#define __CUDACC__
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#undef __DEVICE_FUNCTIONS_HPP__
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#include "device_functions.hpp"
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#include "device_atomic_functions.hpp"
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#include "sm_20_atomic_functions.hpp"
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#include "sm_32_atomic_functions.hpp"
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#include "sm_20_intrinsics.hpp"
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// sm_30_intrinsics.h has declarations that use default argument, so
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// we have to include it and it will in turn include .hpp
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#include "sm_30_intrinsics.h"
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#include "sm_32_intrinsics.hpp"
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#undef __MATH_FUNCTIONS_HPP__
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#include "math_functions.hpp"
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#pragma pop_macro("__host__")
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#include "texture_indirect_functions.h"
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// Restore state of __CUDA_ARCH__ and __THROW we had on entry.
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#pragma pop_macro("__CUDA_ARCH__")
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#pragma pop_macro("__THROW")
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// Set up compiler macros expected to be seen during compilation.
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#undef __CUDABE__
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#define __CUDACC__
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#define __NVCC__
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#if defined(__CUDA_ARCH__)
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// We need to emit IR declaration for non-existing __nvvm_reflect to
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// let backend know that it should be treated as const nothrow
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// function which is implicitly assumed by NVVMReflect pass.
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extern "C" __device__ __attribute__((const)) int __nvvm_reflect(const void *);
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static __device__ __attribute__((used)) int __nvvm_reflect_anchor() {
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return __nvvm_reflect("NONE");
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}
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#endif
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#endif // __CUDA__
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#endif // __CLANG_CUDA_RUNTIME_H__
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