72 struct SpillPlacement::Node {  struct in SpillPlacement
74   BlockFrequency BiasN;
76   BlockFrequency BiasP;
81   int Value;
83   typedef SmallVector<std::pair<BlockFrequency, unsigned>, 4> LinkVector;
87   LinkVector Links;
90   BlockFrequency SumLinkWeights;
93   bool preferReg() const {  in preferReg()
99   bool mustSpill() const {  in mustSpill()
108   void clear(const BlockFrequency &Threshold) {  in clear()
115   void addLink(unsigned b, BlockFrequency w) {  in addLink()
130   void addBias(BlockFrequency freq, BorderConstraint direction) {  in addBias()
148   bool update(const Node nodes[], const BlockFrequency &Threshold) {  in update()
177   void getDissentingNeighbors(SparseSet<unsigned> &List,  in getDissentingNeighbors()