I'd perhaps put ARM vs RISC-V closer to like C# vs Java (or maybe JS vs Python) - on a high level rather similar, but a majority of the specifics don't really l

I'd perhaps put ARM vs RISC-V closer to like C# vs Java (or maybe JS vs Python) - on a high level rather similar, but a majority of the specifics don't really line up (especially at the uop level requiring dumping a bunch of previous optimized cases, and adding a bunch of new ones).