[Bug middle-end/79756] [5/6/7 Regression] ICE in execute_todo, at passes.c:2011

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79756

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
That is, we probably lack testcases for constexpr GCC vector extension indexing
uses?