https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90437
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2019-05-13 Ever confirmed|0 |1 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- VRP obviously only sees a + b in [0, 20] and [0, 20] < [0, 10] as unknown.