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Process masked integer norms chunk by chunk and reuse each loaded mask and predicate across channels, avoiding repeated mask processing. Extend norm_mask performance coverage with three-channel 8U, 8S, 16U, 16S, and 32S inputs for INF, L1, and L2 norms. Co-authored-by: Yang Wang <yangwang@iscas.ac.cn> Co-authored-by: Yuansheng <yuansheng@isrc.iscas.ac.cn>