https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101926 Bug 101926 depends on bug 115351, which changed state.
Bug 115351 Summary: [14 regression] pointless movs when passing by value on x86-64 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115351 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED