Question: Suppose the order of the third and fourth cases (the two forwarding sources from the memory stage) in the HCL code for d_valA were reversed.

Suppose the order of the third and fourth cases (the two forwarding sources from the memory stage) in the HCL code for d_valA were reversed. Describe the resulting behavior of the rrmovq instruction (line 5) for the following program:

1 2 3 4 5 irmovq $5, %rdx irmov $0x100, %rsp rmmovq %rdx, 0(%rsp) popq %rsp rrmovq %rsp,%rax

1 2 3 4 5 irmovq $5, %rdx irmov $0x100,%rsp rmmovq %rdx, 0(%rsp) popq %rsp rrmov %rsp, %rax

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