Multi-prediction branch prediction mechanism

Details Multi-prediction branch prediction mechanism Multi-prediction branch prediction mechanism

1993-07-13

1994-10-04

Lall, P. S.

Boots, shoes, and leggings

3642613, 3642615, 3642631, 3642557, 3642318, 364DIG1, G06F 938

Patent

active

053534212

ABSTRACT:
A multi-prediction branch prediction mechanism predicts each conditional branch at least twice, first during the instruction-fetch phase of the pipeline and then again during the decode phase of the pipeline. The mechanism uses at least two different branch prediction mechanisms, each a separate and independent mechanism from the other. A set of rules are used to resolve those instances as to when the predictions differ.

REFERENCES:
patent: 4853840 (1989-08-01), Shibuya
patent: 4894772 (1990-01-01), Langendrof
patent: 4943908 (1990-07-01), Emma et al.
patent: 5121473 (1992-05-01), Hodges
patent: 5142634 (1992-08-01), Fite et al.

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