Luau’s Speed Secrets: Fast Interpreter, Optional JIT, and Tuning Tips
Roblox’s Luau engine prioritizes stable high‑performance in interpreted code, delivering a highly tuned C‑based bytecode interpreter that rivals LuaJIT on many workloads. It also offers an optional JIT for x64/arm64 that leverages type annotations but skips runtime tracing. These choices let game developers write idiomatic Lua that runs fast without heavy platform‑specific hacks.