Just a heads up, @Rot127 finished the support for ARM and PPC (was merged mainstream), and currently works on AArch64: https://github.com/capstone-engine/capstone/pull/2026
Issue to track the full project is at `auto-sync` progress tracker: Refactor and implement architectures · Issue #2015 · capstone-engine/capstone · GitHub
The changes for LLVM/TableGen were merged already in the auto-sync branch of this repository: Commits · capstone-engine/llvm-capstone · GitHub
Any feedback is welcome. Also, would be nice to reduce the amount of changes eventually, by progressing with the patch in question - separating code generation in TableGen.