plugin hooks for plugin-provided builtins?

[Marcus Daniels]

  On 9/14/10 8:46 AM, Basile Starynkevitch wrote:
>   My current work aims to translate some Gimple into OpenCL source
> code, thus providing GCC with the ability to take advantage of GPU
> running their proprietary OpenCL compilers without asking the user to
> learn OpenCL.
My understanding is that Gimple does not have the notion of data 
parallel operations.
For example, in Fortran, array operators are lowered to scalarized form.
OpenCL does have these semantics.   kernels enqueued as an NDRanges are 
item-by-item data parallel and there are often not any loops expressed 
in the kernel itself.  And kernels that do have lots of control logic, 
and use lots of registers, global memory, etc. will tend not to work 
well on GPUs.
> Remember that for geographical & political reasons all my GCC work is
> more "source to source" that "source to machine" oriented. I don't
> have the expertise, and I am not legitimate (internally in my CEA LIST
> organization at least, and also w.r.t. of funding French government
> agencies) to work on anything close to the target processor or silicon
> in GCC.
It seems to me a "source to source" compiler should definitely retain 
high level constructs like array operators, DO ALL, OpenMP directives, etc.

Marcus