[Bug lto/61123] With LTO, -fno-short-enums is ignored, resulting in ABI mis-matching in linking.

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61123

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
It seems that Tag_ABI_PCS_wchar_t is emitted from the C-family frontends only
via config/arm/arm-c.c (as opposed to any other Tags).  Probably because
the option is c-family specific.  This code needs to move to generic handling
(the option enum is shared across all frontends, so that's not a reason to
keep it in a C specific file).