Using Value Prediction to Increase the Power of Speculative Execution Hardware

This paper presents an experimental and analytical study of value prediction and its impact on speculative execution in superscalar microprocessors. Value prediction is a new paradigm that suggests predicting outcome values of operations (at run-time) and using these predicted values to trigger the execution of true-data dependent operations speculatively. As a result, stalls to memory locations can be reduced and the amount of instruction-level parallelism can be extended beyond the limits of the program’s dataflow graph. This paper examines the characteristics of the value prediction

• Type: Journal
• Year: 1998
• Where: TOCS
• Authors: Freddy Gabbay, Avi Mendelson
• Keywords: Speculative Execution, TOCS 1998, True-data Dependent Operations, Value Prediction