https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68030
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2015-10-20 CC| |rguenth at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Induction variable optimization is responsible here but it needs some help from a CSE. I proposed adding a late FRE for that some time ago. The issue is that the vectorizer creates some redundancies when creating address IVs for the vectorized accesses.