[Bug tree-optimization/121362] SCCVN (FRE) sometimes does not read through aggregate copies

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121362

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 62036
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=62036&action=edit
preliminary patch