Apple M1 Microarchitecture Research

Amazing work, but the fact this kind of work is even needed illustrates just how anti-consumer these new Macs really are.

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This is an early attempt at microarchitecture documentation for the CPU in the Apple M1, inspired by and building on the amazing work of Andreas Abel, Andrei Frumusanu, @Veedrac, Travis Downs, Henry Wong and Agner Fog. This documentation is my best effort, but it is based on black-box reverse engineering, and there are definitely mistakes. No warranty of any kind (and not just as a legal technicality). To make it easier to verify the information and/or identify such errors, entries in the instruction tables link to the experiments and results (~35k tables of counter values).