75 struct SpillPlacement::Node {  struct in SpillPlacement
77   BlockFrequency BiasN;
80   BlockFrequency BiasP;
85   int Value;
87   using LinkVector = SmallVector<std::pair<BlockFrequency, unsigned>, 4>;
91   LinkVector Links;
94   BlockFrequency SumLinkWeights;
97   bool preferReg() const {  in preferReg()
103   bool mustSpill() const {  in mustSpill()
112   void clear(const BlockFrequency &Threshold) {  in clear()
119   void addLink(unsigned b, BlockFrequency w) {  in addLink()
134   void addBias(BlockFrequency freq, BorderConstraint direction) {  in addBias()
152   bool update(const Node nodes[], const BlockFrequency &Threshold) {  in update()
181   void getDissentingNeighbors(SparseSet<unsigned> &List,  in getDissentingNeighbors()