https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947 Bug 53947 depends on bug 117776, which changed state.
Bug 117776 Summary: [12/13/14/15 Regression] Missed optimization/vectorization opportunity (adding a even/odd check to an accumulator) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117776 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED