Question: Problem 2 Several researchers have suggested that adding a register-memory addressing mode to a load-store machine might be useful. The idea is to replace sequences

Problem 2

Several researchers have suggested that adding a register-memory addressing mode to a load-store machine might be useful. The idea is to replace sequences of

ld x1, 0(x8)

add x2, x2, x1

with

add x2, 0(x8)

Assume that the new instruction will cause the clock cycle time to increase by 5% and will not affect the CPI. Also, assume loads constitute 25.1% of all instructions. What percentage of the loads must be eliminated for the machine with the new instruction to have at least the same performance?

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