[Bug ipa/79931] ICE in dump_possible_polymorphic_call_targets with -fdump-ipa-all -O2

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79931

--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 41061
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41061&action=edit
Verification patch