https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947 Bug 53947 depends on bug 87914, which changed state.
Bug 87914 Summary: gcc fails to vectorize bitreverse code https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87914 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED