LuaJIT is a just-in-time (JIT) compiler for the Lua language. The virtual
machine (VM) is based on a fast interpreter combined with a trace compiler.
It can significantly improve the performance of Lua programs.

LuaJIT is API- and ABI-compatible with the VM of the standard Lua 5.1
interpreter. When embedding the VM into an application, the built library can be
used as a drop-in replacement.