JIT (also known as Dynamic Translation) is compilation of a program that is done during the execution of a program, rather than before execution. JIT is kind of code inlining known from static compilation and shares the same advantages and disadvantages. A proper use of JIT is to get a balance between code size generation, time of code generation and performance win. A complex code processed by a JIT compiler might decrease the final efficiency, and statically compiled C/C++/Rust code with such algorithm usually performs better.