// ppc64x: `ADD\t[$]-20,\sR[0-9]+,\sR`
	c := -(20 - a)
	return c
}

func NegAddFromConstNeg(a int) int {
	// ppc64x: `SUBC\tR[0-9]+,\s[$]40,\sR`
	c := -(-40 + a)
	return c
}

func SubSubNegSimplify(a, b int) int {
	// amd64:"NEGQ"
	// ppc64x:"NEG"
	r := (a - b) - a
	return r
}

func SubAddSimplify(a, b int) int {
	// amd64:-"SUBQ",-"ADDQ"
	// ppc64x:-"SUB",-"ADD"
	r := a + (b - a)