[Bug tree-optimization/26854] Inordinate compile times on large routines

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26854

--- Comment #133 from Richard Biener <rguenth at gcc dot gnu.org> ---
Thanks for the update - this PR (one of the testcases) is also tracked in
http://gcc.opensuse.org/c++bench-czerny/random/ (two testcases, pr26854.c is
"all.c" and pr26854-2.c is "_num.c").

note that our focus is primarily -O1 for this kind of testcases - -O2 contains
too many known quadraticnesses though _num.c seems to survive fine (well, ~2gb
of ram).