Repeat 4.22.1, but assume that delay slots are used. In the given code, the instruction that follows the branch is now the delay slot instruction for that branch.

Exercise 4.22.1

Draw the pipeline execution diagram for this code, assuming there are no delay slots and that branches execute in the EX stage.

This exercise is intended to help you understand the relationship between delay slots, control hazards, and branch execution in a pipelined processor. In this exercise, we assume that the following MIPS code is executed on a pipelined processor with a 5-stage pipeline, full forwarding, and a predict-taken branch predictor:

Transcribed Image Text:

a. b. Label1: LW R2,0 (R2) BEQ OR SW R2, RO, Label; Taken once, then not taken R2, R2, R3 R2,0 (R5) LW R2,0 (R1) Label1: BEQ R2, RO, Labe12; Not taken once, then taken LW R3,0 (R2) BEQ ADD Label2: SW R3, RO, Labell; Taken R1, R3, R1 R1,0 (R2)