94   struct RegisterSet : private BitVector {  struct
96     explicit RegisterSet(unsigned s, bool t = false) : BitVector(s, t) {}  in RegisterSet()  function
102     unsigned find_first() const {  in find_first()
109     unsigned find_next(unsigned Prev) const {  in find_next()
116     RegisterSet &insert(unsigned R) {  in insert()
121     RegisterSet &remove(unsigned R) {  in remove()
128     RegisterSet &insert(const RegisterSet &Rs) {  in insert()
131     RegisterSet &remove(const RegisterSet &Rs) {  in remove()
135     reference operator[](unsigned R) {  in operator []()
140     bool operator[](unsigned R) const {  in operator []()
145     bool has(unsigned R) const {  in has()
152     bool empty() const {  in empty()
155     bool includes(const RegisterSet &Rs) const {  in includes()
159     bool intersects(const RegisterSet &Rs) const {  in intersects()
164     void ensure(unsigned Idx) {  in ensure()
169     static inline unsigned v2x(unsigned v) {  in v2x()
173     static inline unsigned x2v(unsigned x) {  in x2v()