[Hexagon[ Optimize HVXVectorCombine:Limit Conversion for Unaligned Loads (#176457) The current implementation of HVXVectorCombine converts unaligned loads to aligned ones if adjacency is proven. However, this does not account for the cost of extra loads whether it is amortized or not, leading to performance regressions in certain cases. This change prevents performance regressions by avoiding unnecessary conversions for few numbers of contiguous unaligned loads. Patch By: Fateme Hosseini Co-authored-by: Prasoon Mishra <prasmish@hu-prasmish-hyd.qualcomm.com> Co-authored-by: Prasoon Mishra <prasmish@qti.qualcomm.com>
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