PostgreSQL Begins Landing LLVM JIT Support For Faster Performance Written by Michael Larabel in LLVM on 22 March 2018 at 08:19 AM EDT. 23 Comments The widely-used PostgreSQL database software may soon become much faster thanks to a work-in-progress LLVM JIT back-end that has begun to land. A long-running project has been JIT-compiling SQL queries in PostgreSQL by making use of LLVM's just-in-time