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

[pinskia at gcc dot gnu.org]

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

--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #6)
> Fixed.  I'd be interested in cases we're still missing.

Another related one found PR 121493.