Vector unpack operation. For unsigned integer types, the elements in the lower half or upper half of the source operand are written to the destination operand by extending the bit width with 0-filled high bits. For signed integer types, the elements in the lower half or upper half of the source operand are written to the destination operand by extending the bit width while preserving the sign bit. For boolean vectors, the elements in the lower half or upper half of the source operand are written to the destination operand, preserving their truth values and original order.
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For details about vector data registers and mask registers, see .
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PIPE_V
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