CC_MODE and cc0

[Richard Earnshaw]

> > (define_insn "cbranchqi4"
> >   [(set (pc)
> > 	(if_then_else (match_operator 0 "comparison_operator" ""
> > 			[(match_operand 1 "register_operand" "r")
> > 			 (match_operand 2 "nonmemory_operand" "rni")])
> > 		      (label_ref (match_operand 3 "" ""))
> > 		      (pc)))]
> >   ""
> >   "blah")
> 
> Oh, cool, I wonder when it got added.

Bernd added it to support Thumb branching in the ARM md file.  Previously 
the Thumb target was a separate compiler target that used CC0 -- that had 
to go when the target was merged with ARM.

R.