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HAN Liutong
b5ea32158a
Upgrade RISC-V Vector intrinsic and cleanup the obsolete RVV backend. #25883 This patch upgrade RISC-V Vector intrinsic from `v0.10` to `v0.12`/`v1.0`: - Update cmake check and options; - Upgrade RVV implement for Universal Intrinsic; - Upgrade RVV optimized DNN kernel. - Cleanup the obsolete RVV backend (`intrin_rvv.hpp`) and compatable header file. With this patch, RVV backend require Clang 17+ or GCC 14+ (which means `__riscv_v_intrinsic >= 12000`, see https://godbolt.org/z/es7ncETE3) This patch is test with Clang 17.0.6 (require extra `-DWITH_PNG=OFF` due to ICE), Clang 18.1.8 and GCC 14.1.0 on QEMU and k230 (with `--gtest_filter="*hal_*"`). ### Pull Request Readiness Checklist 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 - [ ] The PR is proposed to the proper branch - [ ] There is a reference to the original bug report and related work - [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [ ] The feature is well documented and sample code can be built with the project CMake
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