https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947 Bug 53947 depends on bug 68483, which changed state.
Bug 68483 Summary: [5/6 Regression] gcc 5.2: suboptimal code compared to 4.9 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68483 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED