Lucian Popescu

PhD Student
Department of Computer Science and Engineering
INESC-ID, Instituto Superior Técnico, University of Lisbon

Email: lucian.popescu@tecnico.ulisboa.pt | GitHub | LinkedIn | ORCID

About

I am a la Caixa INPhINIT PhD fellow at Instituto Superior Técnico and INESC-ID, advised by Nuno Lopes. My research focuses on compilers and programming languages. Previously, I obtained my MSc in Computer Science and Engineering from Universitatea Politehnica din București.

Publications

• Exploiting Undefined Behavior in C/C++ Programs for Optimization: A Study on the Performance Impact
  Lucian Popescu, Nuno P. Lopes
  PLDI, 2025 [pdf]
• Low-Level Software Security for Compiler Developers
  Arm Limited, Bill Wendling, Lucian Popescu, Anders Waldenborg
  Book chapter, 2023 [pdf]
• Performance Impact of Exploiting Undefined Behavior in C/C++
  Lucian Popescu, Nuno P. Lopes
  EuroLLVM Poster, 2023 [pdf]

Education

• PhD in Computer Science and Engineering, Instituto Superior Técnico, 2026 – Present
• MSc in Computer Science and Engineering, Universitatea Politehnica din București, 2022 – 2024. Advisors: Răzvan Deaconescu, Nuno Lopes. [Thesis].
• BSc in Computer Science and Engineering, Universitatea Politehnica din București, 2018 – 2022. Advisors: Lucian Mogoșanu, Răzvan Deaconescu. [Thesis].

Last updated: February 2026