Languages / Knowledge library
Just-in-Time Compilation (JIT)
Compiles code during execution using observed runtime information
Why learn Just-in-Time Compilation (JIT)?
It specializes hot paths while retaining portable input formats
The problem it solves
It balances startup flexibility with optimized repeated execution
Where it came from
Just-in-Time Compilation (JIT) is a programming language and runtime concept that compiles code during execution using observed runtime information. Its guarantees and tradeoffs depend on the concrete implementation and operating context.
Build your understanding
Work through these exercises in order. Try the task before opening a reference.
- Define Just-in-Time Compilation (JIT) and distinguish it from a neighboring concept.
- Choose a realistic task where Just-in-Time Compilation (JIT) is appropriate.
- Identify a failure mode caused by misusing Just-in-Time Compilation (JIT).
- Interpret a small design or result involving Just-in-Time Compilation (JIT).
- Explain one tradeoff or limitation of Just-in-Time Compilation (JIT).
Documentation and sources
- LLVM Language Reference Manual (llvm.org)