Worst-Case Execution Time Aware Compilation Techniques for Real-Time Systems

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Springer Science & Business Media, Sep 24, 2010 - Technology & Engineering - 262 pages

For real-time systems, the worst-case execution time (WCET) is the key objective to be considered. Traditionally, code for real-time systems is generated without taking this objective into account and the WCET is computed only after code generation. Worst-Case Execution Time Aware Compilation Techniques for Real-Time Systems presents the first comprehensive approach integrating WCET considerations into the code generation process. Based on the proposed reconciliation between a compiler and a timing analyzer, a wide range of novel optimization techniques is provided. Among others, the techniques cover source code and assembly level optimizations, exploit machine learning techniques and address the design of modern systems that have to meet multiple objectives.

Using these optimizations, the WCET of real-time applications can be reduced by about 30% to 45% on the average. This opens opportunities for decreasing clock speeds, costs and energy consumption of embedded processors. The proposed techniques can be used for all types real-time systems, including automotive and avionics IT systems.

 

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Contents

Introduction
1
WCET Analysis Techniques
13
WCCWCETAware C Compiler
23
WCETAware Source Code Level Optimizations
60
WCETAware Assembly Level Optimizations
131
Machine Learning Techniques in Compiler Design
158
Multiobjective Optimizations
197
Summary and Future Work
228
Appendix A Abstract Interpretation
235
Appendix B Transformation of Conditions
241
References
243
Index
257
Copyright

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