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2331c9f887
Added GCOVEdge which are simple structs owned by the GCOVFunction that stores the source and destination GCOVBlocks, as well as the counts. Changed GCOVBlocks so that it stores a vector of source GCOVEdges and a vector of destination GCOVEdges, rather than just the block number. Storing the block number was only useful for knowing the number of edges and for debug info. Using a struct is useful for traversing the edges, especially back edges which may be needed later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196175 91177308-0d34-0410-b5e6-96231b3b80d8