[rfc] Implement support for IBM XL C for OpenCL vector ABI

[Ulrich Weigand]

Tom Tromey:
> >>>>> "Ulrich" == Ulrich Weigand <uweigand@de.ibm.com> writes:
> 
> Ulrich> The version below implements your suggestion.  Does this look
> Ulrich> good to you?
> 
> Yes, thanks.

OK, I've checked this in now.

Thanks,
Ulrich

-- 
  Dr. Ulrich Weigand
  GNU Toolchain for Linux on System z and Cell BE
  Ulrich.Weigand@de.ibm.com