https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947 Bug 53947 depends on bug 98291, which changed state.
Bug 98291 Summary: multiple scalar FP accumulators auto-vectorize worse than scalar, including vector load + merge instead of scalar + high-half insert https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98291 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED