[Bug tree-optimization/109862] IV-OPTs could use int but still uses smaller sized for IV

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109862

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think IVOPTs never considers candidates of different size.  One could use
niter info to bound the value range (or use ranger) and add a candidate based
on that.  But you have to be careful with targets that cannot do sub-word
arithmetic efficiently.