[PATCH] Use RTX_AUTOINC in rs6000 predicates.md

[David Edelsohn]

On Fri, Jul 17, 2009 at 1:12 PM, Richard
Sandiford<rdsandiford@googlemail.com> wrote:

>> This is okay.  I agree with starting to use two-letter constraints.
>> Mike is using "w" for VSX.
>
> Ah.  Should I use "ws" instead then?  (That'd be fine with me FWIW.)

I don't have a strong opinion either way.  Mike is not using "w" as a
general escape, but more as a prefix for a series of VSX constraints.
It probably is cleaner to limit "w" to vector-related uses and use "e"
as the general purpose escape.  I don't see any benefit of preserving
additional single-letter constraints as opposed to setting both aside
as escapes.

Thanks, David