Question 2: Instruction Set Speedup (45 Points) Assume load operations are 20% of the total instructions for your workload and stores are 10%. Your load and store instructions can use a register+offset to compute the address. LOAD R1, offset (R2) ; Register (R1] = Memory[ Register (R2] + offset ] You are considering removing these displacement load and store instructions from the instruction set, instead requiring two instructions for the 60% of loads and stores when the offset is not 0. ADD R1, R2, offset LOAD R1, R1 ; Register[R1] = Register (R2] + offset ; Register[R1] = Memory (R1] 2.1 Average CPI (15 Points) If the CPI of load and stores before the change is 5, while other instructions have a CPI of 4, what is the average CPI? 2.2 Clock speedup (15 Points) What is the expected speedup from this change, if it will allow a 1.2x improvement in clock speed, with no change in CPI