Electrical computers and digital processing systems: processing – Dynamic instruction dependency checking – monitoring or...
Reexamination Certificate
2006-09-05
2009-10-06
Huisman, David J (Department: 2183)
Electrical computers and digital processing systems: processing
Dynamic instruction dependency checking, monitoring or...
Reexamination Certificate
active
07600097
ABSTRACT:
One embodiment of the present invention provides a system that processes memory-access instructions in an object-addressed memory hierarchy. During operation, the system receives a load instruction to be executed, wherein the load instruction loads a data item from an object, and wherein the load instruction specifies an object identifier (OID) for the object and an offset for the data item within the object. Next, the system compares the OID and the offset for the data item against OIDs and offsets for outstanding store instructions in a store queue. If the offset for the data item does not match any of the offsets for the outstanding store instructions in the store queue, and hence no read-after-write (RAW) hazard exists, the system performs a cache access to retrieve the data item for the load instruction.
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Huisman David J
Park Vaughan & Fleming LLP
Sun Microsystems Inc.
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