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by monocasa
1629 days ago
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My understanding is that Apple hired a lot of the staff of Transitive, and had a more or less do whatever you want license with source access. Ad that the AOT mode is based on LLVM, but the JIT piece is still pretty core to the design (hence why other JITs run well on top of it). |
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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.