v.Fatalf("op %s doesn't have an int32 aux field", v.Op)
	}
	return int32(v.AuxInt)
}

// AuxUnsigned returns v.AuxInt as an unsigned value for OpConst*.
// v.AuxInt is always sign-extended to 64 bits, even if the
// represented value is unsigned. This undoes that sign extension.
func (v *Value) AuxUnsigned() uint64 {
	c := v.AuxInt
	switch v.Op {
	case OpConst64:
		return uint64(c)
	case OpConst32: