https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947 Bug 53947 depends on bug 91094, which changed state.
Bug 91094 Summary: BB vectorization is too quick to disable itself because of possible unrolling needed https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91094 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED