Apparatus and method to reserve and permute bits in a mask register
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United States of America Patent
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May 9, 2017
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app pub date -
Jun 27, 2013
filing date -
Jun 27, 2013
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Abstract
An apparatus and method are described for performing a bit reversal and permutation on mask values. For example, a processor is described to execute an instruction to perform the operations of: reading a plurality of mask bits stored in a source mask register, the mask bits associated with vector data elements of a vector register; and performing a bit reversal operation to copy each mask bit from a source mask register to a destination mask register, wherein the bit reversal operation causes bits from the source mask register to be reversed within the destination mask register resulting in a symmetric, mirror image of the original bit arrangement.
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