88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
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// This file is part of OpenCV project.
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// It is subject to the license terms in the LICENSE file found in the top-level directory
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// of this distribution and at http://opencv.org/license.html.
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#ifndef OPENCV_CORE_SIMD_INTRINSICS_HPP
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#define OPENCV_CORE_SIMD_INTRINSICS_HPP
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/**
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Helper header to support SIMD intrinsics (universal intrinsics) in user code.
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Intrinsics documentation: https://docs.opencv.org/4.x/df/d91/group__core__hal__intrin.html
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Checks of target CPU instruction set based on compiler definitions don't work well enough.
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More reliable solutions require utilization of configuration systems (like CMake).
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So, probably you need to specify your own configuration.
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You can do that via CMake in this way:
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add_definitions(/DOPENCV_SIMD_CONFIG_HEADER=opencv_simd_config_custom.hpp)
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or
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add_definitions(/DOPENCV_SIMD_CONFIG_INCLUDE_DIR=1)
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Additionally you may need to add include directory to your files:
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include_directories("${CMAKE_CURRENT_LIST_DIR}/opencv_config_${MYTARGET}")
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These files can be pre-generated for target configurations of your application
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or generated by CMake on the fly (use CMAKE_BINARY_DIR for that).
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Notes:
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- H/W capability checks are still responsibility of your application
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- runtime dispatching is not covered by this helper header
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*/
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#ifdef __OPENCV_BUILD
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#error "Use core/hal/intrin.hpp during OpenCV build"
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#endif
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#ifdef OPENCV_HAL_INTRIN_HPP
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#error "core/simd_intrinsics.hpp must be included before core/hal/intrin.hpp"
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#endif
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#include "opencv2/core/cvdef.h"
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#ifdef OPENCV_SIMD_CONFIG_HEADER
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#include CVAUX_STR(OPENCV_SIMD_CONFIG_HEADER)
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#elif defined(OPENCV_SIMD_CONFIG_INCLUDE_DIR)
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#include "opencv_simd_config.hpp" // corresponding directory should be added via -I compiler parameter
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#else // custom config headers
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#if (!defined(CV_AVX_512F) || !CV_AVX_512F) && (defined(__AVX512__) || defined(__AVX512F__))
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# include <immintrin.h>
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# undef CV_AVX_512F
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# define CV_AVX_512F 1
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# ifndef OPENCV_SIMD_DONT_ASSUME_SKX // Skylake-X with AVX-512F/CD/BW/DQ/VL
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# undef CV_AVX512_SKX
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# define CV_AVX512_SKX 1
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# undef CV_AVX_512CD
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# define CV_AVX_512CD 1
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# undef CV_AVX_512BW
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# define CV_AVX_512BW 1
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# undef CV_AVX_512DQ
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# define CV_AVX_512DQ 1
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# undef CV_AVX_512VL
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# define CV_AVX_512VL 1
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# endif
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#endif // AVX512
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// GCC/Clang: -mavx2
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// MSVC: /arch:AVX2
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#if defined __AVX2__
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# include <immintrin.h>
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# undef CV_AVX2
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# define CV_AVX2 1
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# if defined __F16C__
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# undef CV_FP16
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# define CV_FP16 1
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# endif
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#endif
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#endif
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// SSE / NEON / VSX is handled by cv_cpu_dispatch.h compatibility block
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#include "cv_cpu_dispatch.h"
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#include "hal/intrin.hpp"
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#endif // OPENCV_CORE_SIMD_INTRINSICS_HPP
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