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This conference talk presents research on SNIP (Speculative Execution and Non-Interference Preservation) for compiler transformations, delivered by Sören van der Wall and Roland Meyer from TU Braunschweig at the PriSC 2025 workshop. Explore a novel proof method that ensures non-interference preservation across compiler transformations under speculative semantics using a new simulation relation that works with directives modeling attacker control over micro-architectural states. Learn how the researchers proved the correctness of dead code elimination while discovering a previously unknown security weakness in register allocation that introduces non-interference violations, confirmed in mainstream compilers with libsodium cryptographic library code. Discover their innovative static analysis solution that operates on a product of source and register-allocated programs, providing an automated fix for existing register allocation implementations with proven correctness.
