Question

6. Consider the code below executing in a 5-stage pipeline with inter-stage buffers: 100 104 108 CBZ X1, LOOP ADD X1, X2, X3 ORR X6, X7, X8 ADD X5, X3, X2 112 LOOP: Rewrite CBZ X1, LOOP using a numerical value in place of the label, LOOP. CBZ X1, Assume the branch is taken. What is the content of the PC just before the branch is taken and just after the branch is taken ? Just Before Branch Just After Branch Where did the system get the PC value used to compute the branch target address?

Answer 1

The values to be filled in blank positions are :

1. 12

2. 104

3. 112

4. PC value is stored in Program Counter register.