Re: [9fans] ureg alignment

[erik quanstrom <quanstro@quanstro.net>]

> > on 64-bit machines, the unions in the ureg.h can lead to internal
> > padding.
>
> although one tactic not yet implemented, but soon ..., is to make
> struct and union alignment match the least alignment required, as is
> done for arrays, the approach on amd64 and arm64 is simply not to
> bother with the unions.  if it's sp, it's sp.  link is link.  i think
> the need for the alias has gone.  there aren't any references in port,
> which i think might have caused the aliasing in the first place, and
> xyz/trap.c should know what's what.

good point. i hadn't considered that it might simply be unnecessary.
perhaps because i was also fretting about this not being done consistently
across various codebases.  do you think that's perhaps worth leaving the
#define in as a temporary measure?

- erik