[Bug tree-optimization/56365] Missed opportunities for smin/smax standard name patterns when compiling as C++

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56365

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
No, that doesn't handle PHI nodes.  phiopt needs to be improved to handle
merged PHIs for this case.