[jabl]

Huh, that's surprising. I looked it up and indeed you're correct. Well, oof. Though to be fair I don't now how much of an impediment that is for actually implementing very wide decoders in practice. Hopefully not too bad.

[snvzz]

Relative to x86 (where you need bruteforce, with complexity growing geometric to decode width), it is so cheap you could call it free.