[runevault]

In general, probably, you'd have to replace the part where he writes the LLVM IR directly to say GCC's IR. If you mean no IR at all it doesn't sound like it based on the part about replacing the assembly from LuaJIT.

[kryptiskt]

GCC is written in C++ these days, so something like QBE(https://c9x.me/compile/) would be needed.