[cft] subreg validation round 2

[Richard Henderson]

On Thu, Nov 18, 2004 at 01:17:07PM +0000, Richard Sandiford wrote:
> I realise that they are in general, but it's fairly clear that,
> for example, FUNCTION_VALUE is allowed to return BLKmode REGs.
> Routines like hard_function_value have code that specifically
> handles such cases.

I think you have a point.  I'll revert that part of the patch
and fix this a different way.  And update the documentation.


r~