[Bug target/84762] GCC for PowerPC32 violates the SysV ABI spec for small struct returns

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84762

--- Comment #8 from Segher Boessenkool <segher at gcc dot gnu.org> ---
It is.  This PR is about us not following the ABI.  On trunk this code
is miscompiled; there is at least one other PR for that.