Computers and Technology, 22.07.2019 18:30 momosoccer2545

Consider the following loop.
loop: lw r1, 0(r1)
r1, r1, r2
lw r1, 0(r1)
lw r1, 0(r1)
beq r1, r0,
loop assume that perfect branch prediction is used (no stalls due to control hazards), that there are no delay slots, and that the pipeline has full forwarding support. also assume that many iterations of this loop are executed before the loop exits.
a) show a pipeline execution diagram for the third iteration of this loop, from the cycle in which we fetch the first instruction of that iteration up to (but not including) the cycle in which we can fetch the first instruction of the next iteration. show all instructions that are in the pipeline during these cycles (not just those from the third iteration). b) how often (as a percentage of all cycles) do we have a cycle in which all five pipeline stages are doing useful work?

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Consider the following loop.
loop: lw r1, 0(r1)
r1, r1, r2
lw r1, 0(r1)
...

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