Understanding Predicate and Constrains

[Jim Wilson]

On Tue, 2008-04-08 at 13:33 -0500, Omar wrote:
> I have been looking at other targets, and they seem to use the
> CONST_OK_FOR_LETTER_P macro for this purpose.

Current ports in current sources use the constraints.md file.  Old ports
and/or old sources use CONST_OK_FOR_LETTER_P.  Long term, everything
will be moved to the constraints.md file, but the change is not complete
yet.

Jim