https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69873
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> --- It's difficult to find a testcase that we'd vectorize with a runtime profitability check but whithout any versioning or peeling because we should always be able to statically decide profitability there - more vector iterations shouldn't be able to offset any outside cost on the vector path because there is none (well, an "excessive" number of emitted splats maybe - but that starts to be quite a bit tricky).
