What are some examples of branch predictors in computer architecture?

What are some examples of branch predictors in computer architecture?

Branch predictors are techniques used in CPUs to improve the flow of instruction execution. Examples include static prediction, dynamic prediction, and two-level adaptive predictors.

Can you explain how dynamic branch prediction works?

Dynamic branch prediction uses historical information to make predictions about the direction of branches. It typically employs a branch history table to track the outcomes of previous branches.

What is the difference between static and dynamic branch prediction?

Static branch prediction relies on fixed rules, while dynamic branch prediction adapts based on runtime behavior, making it generally more accurate.

Are there any specific algorithms used in dynamic branch prediction?

Yes, common algorithms include the Gshare predictor, which combines global history with the branch address, and the Tournament predictor, which uses multiple predictors and selects the best one.