[patch] optimize 40x description a bit

[David Edelsohn]

>>>>> Eric Christopher writes:

Eric> * config/rs6000/40x.md: Split into two automatons.

Eric> -(define_automaton "ppc40x")
Eric> -(define_cpu_unit "iu_40x,bpu_40x,fpu_405" "ppc40x")
Eric> +(define_automaton "ppc40x,iu_40x")
Eric> +(define_cpu_unit "bpu_40x,fpu_405" "ppc40x")
Eric> +(define_cpu_unit "iu_40x" "iu_40x")
 
	Okay, but would you please name the new automata ppc40xiu instead
of iu_40x to be consistent with the other automata in the rs6000 port?

Thanks, David