https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86557
Marc Glisse <glisse at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2018-07-18 Ever confirmed|0 |1 --- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> --- Indeed, this example was mentioned during the discussion on better diagnostics but not entered in bugzilla, thanks. IIRC the issue is that we do not handle EXACT_DIV_EXPR in the vectorizer, which should be easy enough. (then it isn't obvious to me that vectorizing this particular loop is a good idea, but that's an independent question)