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Pratham Kumar
f46dd2af02
core: add ArmPL HAL backend for cv::SVD::compute - #30045 ## Summary - Adds an ARM Performance Library (ARMPL) HAL backend for cv::SVD::compute (cv_hal_SVD32f / cv_hal_SVD64f), replacing OpenCV's default SVD path with ARMPL's LAPACKE_sgesdd / LAPACKE_dgesdd for float and double matrices on AArch64. ## Changes **hal/armpl/include/armpl_hal_core.hpp:** - Declare armpl_hal_SVD32f / armpl_hal_SVD64f and register them as cv_hal_SVD32f / cv_hal_SVD64f. **hal/armpl/src/armpl_hal_core.cpp:** - Add a templated armpl_svd helper that maps OpenCV's CV_HAL_SVD_NO_UV / SHORT_UV / MODIFY_A / FULL_UV flags onto LAPACKE's jobz parameter and calls LAPACKE_sgesdd / dgesdd. - Fall back to OpenCV's default (non-HAL) implementation for small matrices (m < 33, ARMPL_SVD_SMALL_MATRIX_THRESH). ## Performance Benchmarks <img width="842" height="422" alt="image" src="https://github.com/user-attachments/assets/12b84943-be57-4bf4-9d7e-c85121da4689" />