Evaluation
The more hardware (real estate) the better!
- GA s for a given number of “s” the larger G the better; for a given “G” length, the larger the number of “s” the better.
Note that the result of a branch might not be known when the GA (or PA) needs to be used again (because we might issue several instructions per cycle). It must be speculatively updated (and corrected if need be).
Ditto for PHT but less in a hurry?