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609ea50026
* hexagon: fix tail corruption with rows sizes not multiple of 256 * hexagon: use different stride for repacking partial blocks * hex-mm: update repack and kernels to avoid shuffles for full 256-element blocks Previous commit changed the repacking to use even:odd (0:1,2:3,..) packing instead of the original (0:128,1:129,...) packing in order to fix tail corruption. Since the mm kernels already deal with partial tails we can use even:odd packing only for the last block. This avoid performance penalty of having to shuffle to zip the elements in the common case. * hex-mm: update rmpy x8 for better optimizations * hex-mm: tighten supported MUL_MAT checks to avoid spurios failures * hex-mm: use vzero to init accumulators * hex-mm: properly call partial rmpy_x8