Context-based Branch Prediction for High-Performance and Low-Power Computing
نویسندگان
چکیده
Advanced processors can simultaneously execute multiple instructions in parallel to achieve performance. Branches introduce control dependence between instructions. Branch prediction therefore is important to modern processors. Most present predictors use branch history to predict branch outcomes. Using branch history alone results in delay for identifying mispredictions. In this paper, a context-based branch predictor is proposed to resolve branch condition for conditional branches. Simulation results of SimWattch from SPECint95 and MediaBench programs reveal that using our method, on average, the CPI can be improved by 2.12%, the IPC can be improved by 2.19%, and power consumption can be improved by 2.12%.
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