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VanHattum, Alexa Sampson, Adrian Dell, Nicola Myers, Andrew 2024-04-05T18:48:11Z 2024-04-05T18:48:11Z 2023-08 ProQuest Submission ID: 13765 ProQuest Publication ID: 30567888 https://hdl.handle.net/1813/114787 https://doi.org/10.7298/3dd3-da81 16219222 151 pages Compilers are foundational to everything we ask our computers to do—applications can only be as efficient and reliable as the underlying compiler stack that translates their logic to machine code. But compiler expertise is a finite resource, and engineers may have to choose whether to prioritize adding optimizations for efficiency or validating their existing features for reliability. This dissertation presents three systems that use lightweight, practical formal methods to push past this tension between performance and correctness. The Diospyros compiler combines an efficient term-rewriting strategy, equality saturation, with translation validation to find correct, fast vectorizations for specialized linear algebra tasks on digital signal processors. The Kani verifier for Rust leverages compiler invariants to improve the performance of dynamically dispatched methods in a satisfiability-solver-based model checker for low-level systems code. Finally, the VeriISLE engine uses annotations to automatically verify machine code generation in Cranelift, a popular production compiler infrastructure for WebAssembly where miscompilation bugs can cause serious security vulnerabilities. In sum, these projects point to a future where lightweight formal methods help us build compilers for fast and reliable computer systems. en Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Compilers Formal methods Programming languages Lightweight Formal Methods for Correct, Efficient Systems Programming dissertation or thesis https://newcatalog.library.cornell.edu/catalog/16219222 application/pdf Computer Science Cornell University Doctor of Philosophy Ph. D., Computer Science https://hdl.handle.net/1813/59810.2 Publication Cornell Theses and Dissertations VanHattum, Alexa 5893a6ea-7af3-41d7-abc6-04bcd26ab5df open.access open.access <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="0e35b901-715e-4366-abdc-30fa04912f63"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>en</Language> <Title>Lightweight Formal Methods for Correct, Efficient Systems Programming</Title> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2023-08</PublicationDate> <DOI>https://doi.org/10.7298/3dd3-da81</DOI> <Authors> <Author> <DisplayName>VanHattum, Alexa</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <OrgUnit /> </Publisher> </Publishers> <License>https://creativecommons.org/licenses/by/4.0/</License> <Keyword>Compilers</Keyword> <Keyword>Formal methods</Keyword> <Keyword>Programming languages</Keyword> <Abstract>Compilers are foundational to everything we ask our computers to do—applications can only be as efficient and reliable as the underlying compiler stack that translates their logic to machine code. But compiler expertise is a finite resource, and engineers may have to choose whether to prioritize adding optimizations for efficiency or validating their existing features for reliability. This dissertation presents three systems that use lightweight, practical formal methods to push past this tension between performance and correctness. The Diospyros compiler combines an efficient term-rewriting strategy, equality saturation, with translation validation to find correct, fast vectorizations for specialized linear algebra tasks on digital signal processors. The Kani verifier for Rust leverages compiler invariants to improve the performance of dynamically dispatched methods in a satisfiability-solver-based model checker for low-level systems code. Finally, the VeriISLE engine uses annotations to automatically verify machine code generation in Cranelift, a popular production compiler infrastructure for WebAssembly where miscompilation bugs can cause serious security vulnerabilities. In sum, these projects point to a future where lightweight formal methods help us build compilers for fast and reliable computer systems.</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>