v.AuxInt = int32ToAuxInt(0)
		return true
	}
	return false
}
func rewriteValueAMD64_OpAMD64SBBQ(v *Value) bool {
	v_2 := v.Args[2]
	v_1 := v.Args[1]
	v_0 := v.Args[0]
	// match: (SBBQ x (MOVQconst [c]) borrow)
	// cond: is32Bit(c)
	// result: (SBBQconst x [int32(c)] borrow)
	for {
		x := v_0
		if v_1.Op != OpAMD64MOVQconst {
			break
		}
		c := auxIntToInt64(v_1.AuxInt)