const go/types.nilvalue

5 uses

	go/types (current package)
		assignments.go#L30: 	case nilvalue:
		operand.go#L33: 	nilvalue                     // operand is the nil value - only used by types2
		operand.go#L48: 	nilvalue:  "nil", // only used by types2
		operand.go#L132: 		if x.mode() == nilvalue {
		operand.go#L316: 		return x.mode() == nilvalue