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Explore an innovative approach to optimizing Emacs Lisp performance through speculative Just-In-Time (JIT) compilation implemented in Java in this 19-minute conference talk from EmacsConf 2025. Discover how Juicemacs leverages Java's mature JIT compilation infrastructure to potentially accelerate ELisp execution, examining the technical challenges and opportunities of bridging these two distinct programming environments. Learn about the experimental implementation details, performance considerations, and the speculative nature of this compilation approach as presenter Kana demonstrates how modern JVM optimization techniques might be applied to enhance the responsiveness of Emacs and its extensive ecosystem of Lisp-based extensions and configurations.
