[Bug middle-end/86145] Inefficient homogeneous struct return

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86145

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|unknown                     |8.1.0

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is that the ABI details are not exposed soon enough and thus
decisions on where to allocate locals are already committed to.

There are a bunch of dups for x86 returns/args of vectors and complex vars.