[Bug target/65278] [5 Regression] ICE on powerpc{64}-linux-gnu

[hubicka at ucw dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65278

--- Comment #8 from Jan Hubicka <hubicka at ucw dot cz> ---
> The offending insn gets created in rs6000_output_mi_thunk, but without the
> patch there are no thunks, so this function doesn't even get called.
> 
> Perhaps either Honza or David can comment on what needs to happen here, whether
> the icf code needs to be tweaked, or a non-local insn needs to be added to the
> ppc backend.

ICF itself does not produce thunk (it uses the expand_thunk to make real RTL
wrappers, but it never uses the ASm machinery) so I suppose this may be a dup
of PR65263?

I can imagine that ICF merging actually keeps a real C++ tunk alive by
differences
of later optimizations and this thunk being redirected to externalsymbols. 
Does
the patch in PR65263 help?

Honza