[Bug tree-optimization/85964] [8/9 Regression] compile time hog w/ -O3 -ftracer -fno-guess-branch-probability

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85964

--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Jeff can you look at the backwards threading scaling issue?  There's also
PR69580
for that which may be the same underlying issue.