Performs decompression according to the mask and outputs the generated data to dst. Decompression method: the 0th element in dst is set to 0, and the i-th element in dst equals the count of 1s from the 0th to the (i-1)th element in mask. The highest bit of mask is ignored and not included in the count. The algorithm logic is as follows:
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For details about vector data registers and mask registers, see .
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