Apparatus and method for dependency tracking and register file bypass controls using a scannable register file
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United States of America Patent
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Issued Date -
Jul 27, 2006
app pub date -
Jan 27, 2005
filing date -
Jan 27, 2005
priority date (Note) -
Abandoned
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Abstract
An apparatus and method for dependency tracking and register file bypass controls using a scannable register file are provided. With the apparatus and method, a scannable register file array is provided and used to track the stage of any instruction in the execution unit. Every entry in the target vector is updated every cycle to stay synchronized with the instructions in the execution unit. To keep the register file array synchronized with the instructions in the execution unit, a right shift of all the data in each entry of the register file array occurs every cycle. The scan port of the register file array cells is used as the shift function.
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