https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947 Bug 53947 depends on bug 98908, which changed state.
Bug 98908 Summary: Failure to optimize arithmetic involving struct members into operating on the entire struct https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98908 What |Removed |Added ---------------------------------------------------------------------------- Status|WAITING |RESOLVED Resolution|--- |FIXED