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

[thanm at google dot com]

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

--- Comment #12 from Than McIntosh <thanm at google dot com> ---
Created attachment 46304
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46304&action=edit
modified test case (file 2 of 2)