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Consider the following sequence o instructions, and assume that it is executed on a 5-stage pipelined data path: add r5, r2, r1 lwt3, 4(r5) lw
Consider the following sequence o instructions, and assume that it is executed on a 5-stage pipelined data path: add r5, r2, r1 lwt3, 4(r5) lw r2, 0(r2) Or r3, r5, r3 sw r3, 0(r5) # 11 #12 #13 #14 #15 b. Assume the 5-stage MIPS pipeline with no forwarding, and each stage takes 1 cycle. Instead of inserting NOPs, you let the processor stall on hazards. How many times does the processor stall? What is the total number of stall cycles? What is the execution time (in cycles) for the whole program? Sketch a diagram to explain your answer. Assume the 5-stage MIPS pipeline with full forwarding. Insert NOPs to eliminate the hazards. Sketch a diagram to verify your answer. c. d
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