轉載地址:http://blog.csdn.net/zzwu/article/details/54810162app
說明:ide
執行6級流水做業:fetch
1. fetch(取指)spa
2. decode(譯碼).net
3. dispatch/renaming(分發/重命名)code
4. select/wakeup(選擇/喚醒)blog
5. execution/mem access/finish(執行/存取/結束)ip
6. complete/retire(完成/恢復)it
六級流水做業的另外一種劃分說法:pip
The six-stage pipeline should be divided into the following stages:
- Instruction Fetch (取指)-- request instruction from iMem and update PC
- Decode(譯碼) -- receive response from iMem and decode instruction
- Register Fetch(取寄存器) -- read from the register file
- Execute(執行) -- execute the instruction and redirect the processor if necessary
- Memory(存儲) -- send memory request to dMem
- Write Back(回寫) -- receive memory response from dMem (if applicable) and write to register file