Interleaving data accesses issued in response to vector access instructions
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United States of America Patent
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Apr 28, 2015
Grant Date -
Mar 28, 2013
app pub date -
Sep 28, 2011
filing date -
Sep 28, 2011
priority date (Note) -
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Abstract
A vector data access unit includes data access ordering circuitry, for issuing data access requests indicated by elements of earlier and a later vector instructions, one being a write instruction. An element indicating the next data access for each of the instructions is determined. The next data accesses for the earlier and the later instructions may be reordered. The next data access of the earlier instruction is selected if the position of the earlier instruction's next data element is less than or equal to the position of the later instruction's next data element minus a predetermined value. The next data access of the later instruction may be selected if the position of the earlier instruction's next data element is higher than the position of the later instruction's next data element minus a predetermined value. Thus data accesses from earlier and later instructions are partially interleaved.
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