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Formal Verification of an SSA-based Middle-end for CompCert

Gilles Barthe 1 Delphine Demange 2 David Pichardie 2 
2 CELTIQUE - Software certification with semantic analysis
Inria Rennes – Bretagne Atlantique , IRISA-D4 - LANGAGE ET GÉNIE LOGICIEL
Abstract : CompCert is a formally verified compiler that generates compact and efficient code for a large subset of the C language. However, CompCert foregoes using SSA, an intermediate representation employed by many compilers that enables writing simpler, faster optimizers. In fact, it has remained an open problem to verify formally an SSA-based compiler. We report on a formally verified, SSA-based middle-end for CompCert. In addition to providing a formally verified SSA-based middle-end, we address two problems raised by Leroy in [2009]: giving an intuitive formal semantics to SSA, and leveraging its global properties to reason locally about program optimizations.
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Contributor : Delphine Demange Connect in order to contact the contributor
Submitted on : Saturday, December 20, 2014 - 9:48:03 PM
Last modification on : Wednesday, February 2, 2022 - 3:50:45 PM

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Gilles Barthe, Delphine Demange, David Pichardie. Formal Verification of an SSA-based Middle-end for CompCert. ACM Transactions on Programming Languages and Systems (TOPLAS), 2014, 36 (1), pp.35. ⟨10.1145/2579080⟩. ⟨hal-01097677⟩



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