[Bug target/89545] ABI clarification for over-aligned type stack passing

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89545

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 45866
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45866&action=edit
An psABI patch

How about this?