(CondSelect x y (SETBC [a] cmp))  => (ISEL [a] x y cmp)
(CondSelect x y (SETBCR [a] cmp))  => (ISEL [a+4] x y cmp)
// Only lower after bool is lowered. It should always lower. This helps ensure the folding below happens reliably.
(CondSelect x y bool) && flagArg(bool) == nil => (ISEL [6] x y (CMPconst [0] (ANDconst [1] bool)))

	typ := &b.Func.Config.Types
	// match: (CondSelect x y (SETBC [a] cmp))
	// result: (ISEL [a] x y cmp)
	for {
		x := v_0
		y := v_1
		if v_2.Op != OpPPC64SETBC {
			break
		}
		a := auxIntToInt32(v_2.AuxInt)
		cmp := v_2.Args[0]
		v.reset(OpPPC64ISEL)
		v.AuxInt = int32ToAuxInt(a)
		v.AddArg3(x, y, cmp)
		return true
	}
	// match: (CondSelect x y (SETBCR [a] cmp))