关键词: 数据流限制 值预测 线性函数

Abstract:

In an effort to exploit instruction level parallelism in modern microprocessors, several schemes have been proposed using value prediction to exceed t  he dataflow limit. Some of these mechanisms achieve very high prediction hit rates,albeit at considerable hardware cost. Others with lower hardware cost but obtain mediocre prediction performance. This paper proposes a new simple value predictor based on linear functions. For the SPEC CINT95 benchmark s uite, our scheme has little performance loss compared with that of the best but most complicated hybrid scheme.

Key words: （dataflow limit, data value prediction, linear function）