Add pair conversion functions to BasicBlockEdge.

llvm-svn: 295888

Author: dberlin

llvm/include/llvm/IR/Dominators.h

@@ -46,6 +46,10 @@ class BasicBlockEdge {
 public:
   BasicBlockEdge(const BasicBlock *Start_, const BasicBlock *End_) :
     Start(Start_), End(End_) { }
+  BasicBlockEdge(const std::pair<BasicBlock *, BasicBlock *> &Pair)
+      : Start(Pair.first), End(Pair.second) {}
+  BasicBlockEdge(const std::pair<const BasicBlock *, const BasicBlock *> &Pair)
+      : Start(Pair.first), End(Pair.second) {}
   const BasicBlock *getStart() const {
     return Start;
   }