Advanced load value check enhancement

Details Advanced load value check enhancement Advanced load value check enhancement

2005-08-12

2009-11-03

Chan, Eddie P (Department: 2183)

Electrical computers and digital processing systems: processing

Dynamic instruction dependency checking, monitoring or...

Commitment control or register bypass

Reexamination Certificate

active

07613906

ABSTRACT:
Systems and methods for performing re-ordered computer instructions are disclosed. A computer processor loads a first value from a first memory address, and records both the first value and the second value in a table or queue. The processor stores a second value to the same memory address, and either evicts the previous table entry, or adds the second value to the previous table entry. Upon subsequently detecting the evicted table entry or inconsistent second value, the processor generates an exception that triggers recovery of speculative use of the first value.

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