$16\mathrm{.}13$ Consider the state diagrams of Figure $16\mathrm{.}31.$

a$.$ Describe the behavior of each.

b$.$ Compare these with the branch prediction state diagram in Section $16\mathrm{.}4.$ Discuss the

relative merits of each of the three approaches to branch prediction.

Figure $16\mathrm{.}31$ Two Branch Prediction State Diagrams