Save compiled functions to file (bytecode in Julia)

Palli · February 24, 2026, 11:29am

Julia doesn’t have bytecode, but this new alternative (subset) implementation does:

AoT / Bytecode

Save/load .sjbc bytecode files

[I’m guessing the .sjbc file format for the bytecode, is just for this project; standing for “subset Julia bytecode”?]

subset_julia_vm/src/bytecode.rs

5b103ee0a


      
          //! Bytecode file format for SubsetJuliaVM.
          //!
          //! This module provides serialization and deserialization of Julia programs
          //! to a binary format (.sjbc files). The format stores the Core IR representation
          //! which can be loaded and compiled to either VM bytecode or AoT native code.
          //!
          //! # File Format
          //!
          //! ```text
          //! +------------------+
          //! | Magic (4 bytes)  |  "SJBC"
          //! +------------------+
          //! | Version (4 bytes)|  u32 format version
          //! +------------------+

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Save compiled functions to file (bytecode in Julia)

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