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[HAL] split8u RVV 1.0 #26884 ### Pull Request Readiness Checklist * Banana Pi BF3 (SpacemiT K1) * Compiler: Syntacore Clang 18.1.4 (build 2024.12) ``` Geometric mean (ms) Name of Test baseline hal hal ui vs baseline ui (x-factor) split::Size_Depth_Channels::(127x61, 8UC1, 2) 0.012 0.004 3.12 split::Size_Depth_Channels::(127x61, 8UC1, 3) 0.019 0.006 2.91 split::Size_Depth_Channels::(127x61, 8UC1, 4) 0.028 0.011 2.64 split::Size_Depth_Channels::(127x61, 8UC1, 5) 0.067 0.033 2.02 split::Size_Depth_Channels::(127x61, 8UC1, 6) 0.084 0.040 2.11 split::Size_Depth_Channels::(127x61, 8UC1, 7) 0.103 0.055 1.88 split::Size_Depth_Channels::(127x61, 8UC1, 8) 0.113 0.032 3.50 split::Size_Depth_Channels::(640x480, 8UC1, 2) 0.454 0.179 2.54 split::Size_Depth_Channels::(640x480, 8UC1, 3) 0.677 0.298 2.27 split::Size_Depth_Channels::(640x480, 8UC1, 4) 0.901 0.410 2.20 split::Size_Depth_Channels::(640x480, 8UC1, 5) 3.781 3.010 1.26 split::Size_Depth_Channels::(640x480, 8UC1, 6) 4.886 4.009 1.22 split::Size_Depth_Channels::(640x480, 8UC1, 7) 5.777 4.770 1.21 split::Size_Depth_Channels::(640x480, 8UC1, 8) 4.596 1.330 3.46 split::Size_Depth_Channels::(1280x720, 8UC1, 2) 1.377 0.709 1.94 split::Size_Depth_Channels::(1280x720, 8UC1, 3) 2.091 1.034 2.02 split::Size_Depth_Channels::(1280x720, 8UC1, 4) 2.744 1.573 1.74 split::Size_Depth_Channels::(1280x720, 8UC1, 5) 9.542 6.284 1.52 split::Size_Depth_Channels::(1280x720, 8UC1, 6) 11.114 7.850 1.42 split::Size_Depth_Channels::(1280x720, 8UC1, 7) 14.083 11.879 1.19 split::Size_Depth_Channels::(1280x720, 8UC1, 8) 13.524 3.865 3.50 split::Size_Depth_Channels::(1920x1080, 8UC1, 2) 3.108 1.395 2.23 split::Size_Depth_Channels::(1920x1080, 8UC1, 3) 4.659 2.128 2.19 split::Size_Depth_Channels::(1920x1080, 8UC1, 4) 6.127 2.818 2.17 split::Size_Depth_Channels::(1920x1080, 8UC1, 5) 26.733 16.625 1.61 split::Size_Depth_Channels::(1920x1080, 8UC1, 6) 31.242 22.414 1.39 split::Size_Depth_Channels::(1920x1080, 8UC1, 7) 35.968 27.658 1.30 split::Size_Depth_Channels::(1920x1080, 8UC1, 8) 29.997 8.655 3.47 ``` See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [x] There is a reference to the original bug report and related work - [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [x] The feature is well documented and sample code can be built with the project CMake
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