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946957189d
Summary: This patches fixes an issue in which the __clang_cuda_cmath.h header is being included even when cmath or math.h headers are not included. Reviewers: jdoerfert, ABataev, hfinkel, caomhin, tra Reviewed By: tra Subscribers: tra, mgorny, guansong, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D61765 llvm-svn: 360626
36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
/*===---- __clang_openmp_math.h - OpenMP target math support ---------------===
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*
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*===-----------------------------------------------------------------------===
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*/
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#if defined(__NVPTX__) && defined(_OPENMP)
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/// TODO:
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/// We are currently reusing the functionality of the Clang-CUDA code path
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/// as an alternative to the host declarations provided by math.h and cmath.
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/// This is suboptimal.
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///
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/// We should instead declare the device functions in a similar way, e.g.,
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/// through OpenMP 5.0 variants, and afterwards populate the module with the
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/// host declarations by unconditionally including the host math.h or cmath,
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/// respectively. This is actually what the Clang-CUDA code path does, using
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/// __device__ instead of variants to avoid redeclarations and get the desired
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/// overload resolution.
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#define __CUDA__
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#if defined(__cplusplus)
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#include <__clang_cuda_cmath.h>
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#endif
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#undef __CUDA__
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/// Magic macro for stopping the math.h/cmath host header from being included.
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#define __CLANG_NO_HOST_MATH__
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#endif
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