ACF runs on WordPress so basically, if you are able to install WordPress on HHVM, then ACF should be able to work.
wordpress declares hhvm compatibility since v3.9. I had to ask since, so far, we have been using great and free simple fields plugin which unfortunatelly cannot quite catch up to speed we are looking for.
I will do a test drive of ACF and will let you know of results. I was just asking if you guys have played with hhvm.
Please do and be sure to share your results here.
I have notified the developer on this so that he can carry out some tests.
Hip Hop Virtual Machine (HHVM) is an open-source virtual machine based on just-in-time (JIT) compilation that serves as an execution engine for the Hack programming language
Yes it is available on wordpress