[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 #24 from Than McIntosh <thanm at google dot com> ---
Did another run with the patch from comment 21. For the offending routine I
get:

phi-translate cache statistics: size 2097143, 1171808 elements, 0.465610
collisions