https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947 Bug 53947 depends on bug 21997, which changed state.
Bug 21997 Summary: vectorization inhibited by gcc's choice to view an integer as a boolean https://gcc.gnu.org/bugzilla/show_bug.cgi?id=21997 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED