Assembly language instructions

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Consider the following pipelined SRC, with data forwarding enabled. A series of assembly language instructions are listed. Carefully follow the execution to trace the flow of data. Despite all the hazards, there is exactly one stall. Between which two instructions is it located? (That is, where would a no-op be inserted?)

# Instruction

1 ldr r5, -100

2 add r4, r21, r5

3 sub r1, r29, r4

4 add r23, r13, r1

5  add r12, r13, r0

6 brnz r14, r13

A. between instructions 1 & 2

B. between instructions 2 & 3

C. between instructions 3 & 4

D. between instructions 4 & 5

E. between instructions 5 & 6

Reference no: EM132153088

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