https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947 Bug 53947 depends on bug 65965, which changed state.
Bug 65965 Summary: Straight-line memcpy/memset not vectorized when equivalent loop is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65965 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED