Arrangement for predicting a branch target address in the second

Details Arrangement for predicting a branch target address in the second Arrangement for predicting a branch target address in the second

1994-02-22

1995-02-28

Lall, Parshotam S.

Boots, shoes, and leggings

395425, 3642613, 3642631, G06F 900

Patent

active

053945301

ABSTRACT:
Improved techniques for predicting a branch target address using a branch history table (BHT), is disclosed. The BHT stores a plurality of pairs of a branch address and corresponding branch target address. In order to eliminate or effectively reduce loss of machine cycles in the branch target address prediction, a prefetched address data is compared with an incoming new branch instruction address before being applied to a BHT (branch history table) for the purpose of updating same. When the coincidence is detected, a selector selects a new branch target address before being applied to the BHT. The selected new branch target address is fed to an instruction address prefetch register.

REFERENCES:
patent: 4430706 (1984-02-01), Sand
patent: 4984154 (1991-01-01), Hanatani et al.
patent: 4991080 (1991-02-01), Emma et al.
patent: 5142634 (1992-08-01), Fite et al.
patent: 5313634 (1994-05-01), Eickemyer
patent: 5317702 (1994-05-01), Morisada

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