RFC: subreg fixing (extract_bit_field or simplify_subreg)

[Aldy Hernandez]

On Thu, Oct 28, 2004 at 08:43:48PM +0200, Ulrich Weigand wrote:
> Aldy Hernandez wrote:
> 
> > The RTL is invalid because you can't have a SI subreg of a DF value.
> 
> Why do you think so?

Richard said it was invalid a while ago, but I may be mistaken.

Richard, is (subreg:SI (reg:DF)) valid or not?

If it isn't, I'm sure classic PPC creates it while building floatdidf.

Aldy