Exercise 7.23 How many cycles are required to run the following program on the multicycle ARM processor? What is the CPI of this program? MOV R0 , #5 MOV R1, #0 ; result=5 L1 CMP RO, R1 BEQ DONE SUB RO, RO, #1 if result ? 0, loop : result= result-1 L1 DONE Exercise 7.24 Repeat Exercise 7.23 for the following program MOV R0 , #0 MOV R1, #0 MOV R2, #10 ; sum=0 : R2 = 10 LOOP ; R2RO? CMP R2, RO BEQ L2 ADD R1, R1, RO ADD RO, RO, #1 : sum = sum + 1 ; incrementi LOOP ?2 Exercise 7.23 How many cycles are required to run the following program on the multicycle ARM processor? What is the CPI of this program? MOV R0 , #5 MOV R1, #0 ; result=5 L1 CMP RO, R1 BEQ DONE SUB RO, RO, #1 if result ? 0, loop : result= result-1 L1 DONE Exercise 7.24 Repeat Exercise 7.23 for the following program MOV R0 , #0 MOV R1, #0 MOV R2, #10 ; sum=0 : R2 = 10 LOOP ; R2RO? CMP R2, RO BEQ L2 ADD R1, R1, RO ADD RO, RO, #1 : sum = sum + 1 ; incrementi LOOP ?2