GTY on simple struct (Was: Re: Ping^6: contribute Synopsys Designware ARC port)

[Joern Rennecke]

Quoting Diego Novillo <dnovi...@google.com>:

No need to mark struct arc_frame_info with GTY. It contains no pointers.

That's not quite how it works.  machine_function needs GTY.  It uses
arc_frame_info, hence arc_frame_info also needs GTY.