https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103585
--- Comment #5 from Jan Hubicka <hubicka at gcc dot gnu.org> --- Quick counting from gcov data. It is 585898984 calls and from the disassmebly the call is 101 instructions, so it account 58589898400 The perf reports shows 69059173576 difference so at least instruction count wise most of it is call overhead of perdida.