35     BitVector Elements;  member in llvm::Graph::NodeSubset
36     NodeSubset(BitVector e) : Elements(e) {}  in NodeSubset()
39     NodeSubset() : Elements(0) {  in NodeSubset()
43     NodeSubset(const NodeSubset &other) : Elements(other.Elements) {}  in NodeSubset()
47       return other.Elements == this->Elements;  in operator ==()
56       Elements |= 1U << Idx;  in AddNode()
62       Elements &= ~(1U << Idx);  in DeleteNode()
68       return (Elements & (1U << Idx)) != 0;  in count()
73       return Elements == 0;  in isEmpty()
78       return (this->Elements | other.Elements) == other.Elements;  in isSubsetOf()
83       return ~(unsigned)this->Elements & ((1U << N) - 1);  in Complement()
88       return this->Elements | other.Elements;  in Join()
93       return this->Elements & other.Elements;  in Meet()