[Bug debug/78835] [7 regression] ICE with -fdebug-types-section and member function

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78835

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Now, even going through all cgraph edges and marking the callee DIEs as used
(setting die_mark for them) early (but I guess it would be better to do the
early finish then after early optimizations, but before free_lang_data) would
help in this particular case, but not when we only need devirtualization or
later optimizations to turn indirect calls into direct calls.
Creating a skeleton DIE tree in resolve_addr is yet another option, but I'm not
very familiar with the break_out_comdat_types details (generate_skeleton and
the like) to know how difficult it would be exactly.  Though, for LTO we'll
need to figure out anyway where to create those.