For the following code, calculate the number of instruction cycles required to execute the following code, using the simplified pipeline timing rules in class, including the time to call this function with BL bro8 and the time to return from the function with BX LR. You can assume that the pipeline is full before the BL bro8 instruction is executed. bro8 instruction is executed. bro8:
MOV R1, RO
MOV R0, #0
MOV R2, #0x00000080
MOV R3, #0x00000001

bro8_loop:

TST R1, R2
ORRNE RO, R3
MOVS R2 , R2, LSR #1
MOV R3, R3, LSL #1 BNE bro8_loop BX LR Clock cycles:

If the clock rate is 1 GHz, what is the execute time in microseconds?