[Bug rtl-optimization/80159] [7 regression] gcc takes very long time with -Os

[vmakarov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80159

--- Comment #3 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Either patch proposed by Bernd for PR80160 or my patch on which I am working
for PR80148 will solve the problem.