[Bug libstdc++/91356] Poor optimization of calls involving std::unique_ptr

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91356

--- Comment #9 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #8)
> you'd still need a change to the Itanium ABI.

Or an attribute like [[clang::trivial_abi]], or the one that p1029 is trying to
standardize. But since we would need all compilers to support the attribute, I
guess that it would indeed count as a change to the Itanium ABI.