remove the .gpudata field

[nouiz]

To don't use this field by mistake in old code that don't support strides.

We need PyCUDA/PyOpenCL to try to use the .bytes fields when we ask him to do so.

[inducer]

I'm not sure I agree. How about

@property
def gpudata(self):
  assert no_strides
  return self.bytes

I'm reluctant to remove it outright, because it would effectively break every PyCUDA code under the sun.

[nouiz]

I agree that we could keep it with your proposal.

But to be able to use your proposal, we need PyCUDA/PyOpenCL check the .bytes fields of object it receive and not just .gpudata. But we don't want to always check this.

What about adding a parameter to SourceModule.get_function(, use_bytes=False). When use_bytes is True, it will check for the attributes bytes and not the attributes gpudata.