[Bug tree-optimization/59387] [4.9 Regression] wrong code (hangs) at -Os on x86_64-linux-gnu

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59387

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Well, it should pass and check folded_casts to analyze_scalar_evolution_in_loop
and not do anything if that is set to true and the type is
TYPE_OVERFLOW_UNDEFINED (see simple_iv).