It’s not based on LLVM, that’s way too heavy for the use case. The same backend is used for AoT and JIT compilation. It uses a custom lightweight IR that’s rea

It’s not based on LLVM, that’s way too heavy for the use case. The same backend is used for AoT and JIT compilation. It uses a custom lightweight IR that’s really close to x86 itself, with a big focus towards reducing translation times. Rosetta 2/Cambria was fully written in-house.