[Bug target/113022] GCN offloading bricked by "amdgcn: Work around XNACK register allocation problem"

[ams at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113022

--- Comment #1 from Andrew Stubbs <ams at gcc dot gnu.org> ---
This is what I get for trying to get this done before vacation. :(

Yes, there's probably something in mkoffload that has to match the default
change from -mxnack=any to -mxnack=off on the older ISAs.