[Bug tree-optimization/90316] [8/9 Regression] large compile time increase in opt / alias stmt walking for Go example

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90316

--- Comment #25 from Richard Biener <rguenth at gcc dot gnu.org> ---
OK, so the hashtable looks good.  But

135 pre "insert iterations == 1084" 1

is indeed excessive.  Expecially combined with

135 pre "Insertions" 3

I wonder if you can share the full -fdump-tree-pre-details dump (it's
going to be large though).