Fix predicate in decrement_and_branch_until_zero pattern on PA

[Richard Henderson]

On Wed, Jan 09, 2002 at 01:45:13PM -0500, John David Anglin wrote:
> Isn't the first alternative preferred because it contains a 'r' in addition
> to the '!'?  The documentation indicates 'r' votes in favor of a general
> register.  The other alternatives contain a '*',  and thus they are
> ignored in the determination of register preferences.

Ok, "preferred" was the wrong word, since it's overloaded in
this instance.  Nevertheless all alternatives are punished,
which seems wrong.


r~