Re: AIX support

I wrote:
> I think the only way we could deal with this in a maintainable
> fashion would be to remove the assumption that int64 and double
> have the same alignment requirement.  That is tech debt that
> we really should have cleaned up years ago anyway.

In hopes of moving this effort along, I've posted a draft patch
for that part here:

https://www.postgresql.org/message-id/1127261.1769649624%40sss.pgh.pa.us

We are running out of time to make this happen for v19, so
I suggest focusing your effort if you don't want to see
AIX support slide for another year.

            regards, tom lane