[Patch 1/5] rs6000, Add 128-bit sign extension support

[Segher Boessenkool]

Hi!

On Thu, Aug 13, 2020 at 05:11:11PM -0500, will schmidt wrote:
> > > That is probably a level of detail that is not
> > > really needed in the GCC code comment.  Probably best to just
> > > change
> > > the comment to read something like "ISA 3.0 sign extend builtins". 
> > 
> > Sounds good.
> 
> As long as there are no issues defining the builtins for 3.0 here.
> AFAIK they are not documented in ISA 3.0.  This is a happy accident
> that these ISA 3.1 builtins can be implemented with existing support.

There are *no* builtins defined in the ISA!  The insns are just ISA 3.0
instructions.


Segher