Method for enforcing true dependencies in an out-of-order proces

Details Method for enforcing true dependencies in an out-of-order proces Method for enforcing true dependencies in an out-of-order proces

1997-06-25

1998-12-15

Treat, William M.

39580023, G06F 930

Patent

active

058505334

ABSTRACT:
In a processor executing instructions speculatively or out-of-order, a dependency table tracks instruction dependencies between a current instruction and a live instruction. The table contains an instruction identifier and the destination register specified by the live instruction. The table can also contain information about the age of the entry, the validity of the entry, and the process which the entry is associated. A dependency between instructions is determined by one or more comparators comparing the destination register to the source registers of the current instruction. True dependencies are distinguished from false dependencies using the age information, the validity information, and the process information.

REFERENCES:
patent: 5134561 (1992-07-01), Liptay
patent: 5487156 (1996-01-01), Popescu et al.
patent: 5546597 (1996-08-01), Martell et al.
patent: 5560032 (1996-09-01), Nguyen et al.
patent: 5561776 (1996-10-01), Popescu et al.
patent: 5625789 (1997-04-01), Hesson et al.
patent: 5625837 (1997-04-01), Popescu et al.
patent: 5745726 (1998-04-01), Shebanow et al.
patent: 5745780 (1998-04-01), Phillips et al.
patent: 5748934 (1998-05-01), Lesartre et al.
patent: 5751984 (1998-05-01), Chang et al.
Popescu et al., The Metaflow Architecture, IEEE Micro, 1991, pp. 10-13 and 63-73.
Huang et al., An extended Classification of Inter-Instruction Dependency and Its Application in Automatic Synthesis of Pipelined Processors, IEEE 1993, pp. 236-246.

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