[Bug tree-optimization/114999] A few missing optimizations due to `a - b` and `b - a` not being detected as negatives of each other

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114999

--- Comment #14 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Jennifer Schmitz from comment #12)
> Created attachment 60149 [details]
> Proposed patch for detecting abs diff for signed integers

That is actually PR 50856.