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Ch5 管線化(Pipeline)
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52. Pipeline Hazard、Data Forwarding、Branch Hazard
#CC-05-052
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Pipeline Hazard
Data Forwarding
Branch Hazard
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Which of the following statements are true regarding the pipeline hazards of a 5-stage MIPS CPU?
A
The data forwarding technique passes data to the previous instructions that need the data
B
The structural hazard happens when a required resource is busy
C
Rearranging the instructions may solve some of the data hazards
D
If we put the register comparator and the target address calculator at the ID stage, then 2 stalls are needed for a branch hazard
E
If we put the register comparator and the target address calculator at the ID stage, and a comparison register is a destination of immediately preceding load instruction, then 1 stall is needed
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