[Bug c++/96717] -flifetime-dse=2 breaks webkit-gtk-2.28.4

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96717

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I've moved the #c3 issues into PR96721 and PR96722 as they are separate.  And
either this bug turns a dup of the former, or not.