[Bug tree-optimization/58915] [missed optimization] GCC fails to get the loop bound for some loops.

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58915

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #4)
> Without the VRP, GCC 6.1.0 have this fixed by r6-5389.

Or it was fixed by r6-3351 but it was some patch in GCC 6 timeframe which got
tree-ssa-loop-niter.c to work without VRP usage.