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Document
Fine-Grain Iterative Compilation for WCET Estimation

Authors: Isabelle Puaut, Mickaël Dardaillon, Christoph Cullmann, Gernot Gebhard, and Steven Derrien

Published in: OASIcs, Volume 63, 18th International Workshop on Worst-Case Execution Time Analysis (WCET 2018)


Abstract
Compiler optimizations, although reducing the execution times of programs, raise issues in static WCET estimation techniques and tools. Flow facts, such as loop bounds, may not be automatically found by static WCET analysis tools after aggressive code optimizations. In this paper, we explore the use of iterative compilation (WCET-directed program optimization to explore the optimization space), with the objective to (i) allow flow facts to be automatically found and (ii) select optimizations that result in the lowest WCET estimates. We also explore to which extent code outlining helps, by allowing the selection of different optimization options for different code snippets of the application.

Cite as

Isabelle Puaut, Mickaël Dardaillon, Christoph Cullmann, Gernot Gebhard, and Steven Derrien. Fine-Grain Iterative Compilation for WCET Estimation. In 18th International Workshop on Worst-Case Execution Time Analysis (WCET 2018). Open Access Series in Informatics (OASIcs), Volume 63, pp. 9:1-9:12, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)


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@InProceedings{puaut_et_al:OASIcs.WCET.2018.9,
  author =	{Puaut, Isabelle and Dardaillon, Micka\"{e}l and Cullmann, Christoph and Gebhard, Gernot and Derrien, Steven},
  title =	{{Fine-Grain Iterative Compilation for WCET Estimation}},
  booktitle =	{18th International Workshop on Worst-Case Execution Time Analysis (WCET 2018)},
  pages =	{9:1--9:12},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-073-6},
  ISSN =	{2190-6807},
  year =	{2018},
  volume =	{63},
  editor =	{Brandner, Florian},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.WCET.2018.9},
  URN =		{urn:nbn:de:0030-drops-97556},
  doi =		{10.4230/OASIcs.WCET.2018.9},
  annote =	{Keywords: Worst-Case Execution Time Estimation, Compiler optimizations, Iterative Compilation, Flow fact extraction, Outlining}
}
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