Worst-case execution times for a purely functional language

This paper provides guaranteed bounds on worst-case execution times for a strict, purely functional programming notation. Our approach involves combining time information obtained using a low-level commercial analyser with a high-level source-derived model to give worst-case execution time information. We validate our results using concrete timing information obtained using machine code fragments executing on a Renesas M32C/85 microcontroller development board. Our results confirm experimentally that our worst-case execution time model is a good predictor of execution times.