Methods and apparatus for fordwarding buffered store data on an

Details Methods and apparatus for fordwarding buffered store data on an Methods and apparatus for fordwarding buffered store data on an

1995-05-19

1996-12-24

Eng, David Y.

Boots, shoes, and leggings

3642398, 3649397, 395800, G06F 930

Patent

active

055881262

ABSTRACT:
In an out-of-order execution computer system, a store buffer is conditionally signaled to output buffered store data of buffered memory store operations, when a buffered memory load operation is being executed. The determination on whether to signal the store buffer or not is made using control information that includes the allocation state of the store buffer at the time the memory load operation being executed was issued. The allocation state includes the identification of the buffer slot storing the last memory store operation stored into the store buffer, and the wraparound state of a circular wraparound allocation approach employed to allocate buffer slots to the memory store operations, at the time the memory load operation being executed was issued.

REFERENCES:
patent: 3787815 (1974-01-01), Farr
patent: 3924245 (1975-12-01), Eaton
patent: 4991090 (1991-02-01), Emma

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