[Bug c++/84824] DCE fails to remove dead code of std::function constructor

[manjian2006 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84824

--- Comment #2 from linzj <manjian2006 at gmail dot com> ---
Okay， it's std::_Function_base::_Base_manager<getFunc(int)::<lambda(int, int)>
>::_M_manager(std::_Any_data &, const std::_Any_data &,
std::_Manager_operation) (__dest=..., __source=...,
__op=std::__destroy_functor) 

function that dce fails to remove.