Processor having a selectively configurable branch prediction un

Details Processor having a selectively configurable branch prediction un Processor having a selectively configurable branch prediction un

1996-07-22

1999-05-04

Lee, Thomas C.

395585, G06F 932

Patent

active

059013079

ABSTRACT:
A processor and method for speculatively executing a branch instruction are disclosed. The processor includes a branch prediction unit for predicting a resolution of a speculative branch instruction, which is selectively configurable such that resolution of the speculative branch instruction is predicted in response to only an address of the speculative branch instruction or in response to branch history of at least one previously executed branch instruction. The processor also includes an address calculation unit for determining a target address in response to the predicted resolution of the speculative branch instruction. In one embodiment, the processor further includes configuration logic for dynamically configuring the branch prediction logic.

REFERENCES:
patent: 5454117 (1995-09-01), Puziol et al.
patent: 5507028 (1996-04-01), Liu
patent: 5574871 (1996-11-01), Hoyt et al.
patent: 5577217 (1996-11-01), Hoyt et al.
patent: 5584001 (1996-12-01), Hoyt et al.
patent: 5606676 (1997-02-01), Grochowski et al.

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