default:
		panic("unreachable")
	}
}

// arm64Invert evaluates (InvertFlags op), which
// is the same as altering the condition codes such
// that the same result would be produced if the arguments
// to the flag-generating instruction were reversed, e.g.
// (InvertFlags (CMP x y)) -> (CMP y x)
func arm64Invert(op Op) Op {
	switch op {
	case OpARM64LessThan:
		return OpARM64GreaterThan