Supporting only/ignore matching on the host

[RalfJung]

We have only-target-foo and ignore-target-foo, matching the target triple. It would make just as much sense to also have only-host-foo and ignore-host-foo, matching the host triple.

[RalfJung]

It would also be nice to have host versions of only-32bit etc. Though there the naming becomes a bit tricky...

[oli-obk]

It would also be nice to have host versions of only-32bit etc. Though there the naming becomes a bit tricky...

Hmm... I guess if we'd switch to requiring only-target-32bit that should be fine, we can special case [0-9]+bit and make it not get processed as a target triple substring. A bit icky, but better than being even more verbose

[RalfJung]

we can special case [0-9]+bit and make it not get processed as a target triple substring

I don't think I like that. :/ but I don't have a better suggestion either.