[Bug libstdc++/62045] __gnu_pbds::priority_queue, binary_heap_tag> is too slow

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62045

--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I'm guessing this probably regressed with r174100