Abstract: The out of order execution of store and load instructions always results in memory dependence hazards．MDP(Memory Dependence Prediction) can reduce these hazards,and improve the processor performance．Most of academic research works are complex and spend high hardware cost．Although MDP is implemented simply in commercial processors,it still has some shortages,such as,no self-adaptive ability or blocking ILP(Instruction Level Parallelism)．This paper proposed a simple and effective memory dependence predictor SMDP,which possesses self-adaptive ability,low hardware cost,and high ILP．The simulation shows that SMDP improves the processor performance effectively,by 0.7991% on average over blind prediction,and by 4.9225% at best.

Key words: Memory dependence prediction,Self-adaptive,Improving performance