https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63406
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- I think we have similar dups elsewhere (warning for last unrolled iteration which is never executed). My previous naiive attempts dropped warnings from VRP2 and only warn from VRP1 (but that regresses some cases in the testsuite).
