[Bug tree-optimization/128292] [14/15/16 Regression] wrong code at -O2: fabs() ignored on negative value in tree-vrp

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128292

--- Comment #2 from Drea Pinski <pinskia at gcc dot gnu.org> ---
>From the patch which fixes this: "that we also need to update
or invalidate range information."s

So yes I am 99% sure this was the correct fix.