Optimizing Worst-Case Execution Times Using Mainstream Compilers

Compiler optimizations are widely used to enhance the average case performance of software, and these techniques are very effective and advance with every compiler version. However, in realtime systems, it is the worst-case performance that matters. While there are techniques that aim at reducing the worst-case execution time (WCET), most of them are specific to certain targets and not implemented in mainstream compilers. In this paper, we present our ongoing work for a generic approach to harness the power of existing compiler optimizations for WCET reduction.