[Bug middle-end/28831] [6/7/8 Regression] Aggregate copy not elided when using a return value as a pass-by-value parameter

[aldyh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=28831

--- Comment #32 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
errr, slightly LESS worse code