Clock 5: Execution of instruction B(After retirement of instruction A)

Reorder Buffer

| Status | Dst | Value

0 | Empty | 8 | 25

1 | Finished_Valid | 8 | 55

2 | Issued_Valid | 9 | 0

3 | Issued_Valid | 10 | 0

4 | Empty | 0 | 0

Head =>

<=Tail

instr b

instr c

instr d

Location 0 is marked as empty, Tail pointer incremented. Can retire up to EUMAX instructions per clock. Location 1 not retired this clock because it was just updated; will be retired next clock.

instr a

Previous slide

Next slide

Back to first slide

View graphic version