[PATCH 1/3, v2] rs6000: Add base support and types for defining MMA built-ins.

[Segher Boessenkool]

On Fri, Jun 19, 2020 at 02:43:36PM -0500, Peter Bergner wrote:
> Heh, now I'm not so sure after reading the comment before the test. :-)
> Mike added this code.
> 
> Mike, it looks like you explicitly added XImode here, even though we
> will never generate XImode uses.  Is there some code somewhere that
> requires an integer mode and it's associated partial integer mode to
> have the same registers and if they don't, something won't work right?
> Meaning, is there some reason I shouldn't remove the XImode use here?
> 
> Ditto for OImode and PImode.

If you need to keep it, please add a comment explaining why?


Segher