[Bug c++/82899] *this in constructors could not alias with reference input parameters of the same type

[glisse at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82899

--- Comment #10 from Marc Glisse <glisse at gcc dot gnu.org> ---
This seems fixed in 8.1 (at least we don't generate the extra mov anymore), can
you check?