[Bug libstdc++/117655] std::string::swap() could be much faster and smaller

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117655

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Created attachment 60560
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60560&action=edit
testcase