https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947 Bug 53947 depends on bug 110018, which changed state.
Bug 110018 Summary: Missing vectorizable_conversion(unsigned char -> double) for BB vectorizer https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110018 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED