https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947 Bug 53947 depends on bug 95866, which changed state.
Bug 95866 Summary: vectorized shift with scalar argument not correctly costed https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95866 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED