https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947 Bug 53947 depends on bug 119960, which changed state.
Bug 119960 Summary: [15 Regression] vectorizer seems not to do as much any more since r15-5863 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119960 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED