Implementing an alternative JIT provider for PostgreSQL

Mon, 09 Oct 2023 00:00:00 +0000

Just in time compilation is added to PostgreSQL since the version of 11. The default JIT provider for PostgreSQL is based on LLVM. PostgreSQL allows user to use an alternative JIT provider by setting the jit_provider GUC parameter¹. The pluggable JIT interface is very easy to use and I’ve successfully built two prototypes, one emits C codes² and the other one emits assembly codes³ using the AsmJit library⁴. In this post, I’ll give a brief introduction to the existing LLVM JIT provider and show you how to implement the prototype that emits C codes. It’s fun and easy.

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Implementing an alternative JIT provider for PostgreSQL