[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 #37 from Than McIntosh <thanm at google dot com> ---
(In reply to rguent...@suse.de from comment #36)

> Thanks for the experiment.  I guess I will limit backporting things
> to the GCC 9 branch then.  Am I correct that the 2127 seconds are
> the same regardless of whether r271124 is applied to the branch or not?

The patch makes things slightly better -- without it the time is 2540 seconds.