gcc - Generating Control Flow Graph for c++ code -

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i want analyzes c++ programs. trying generating control flow graph, run tests, , mark vertexes hit. know gcc gives ability generate cfg compiled code -fdump-tree-cfg. generated file hard read , have no idea how parse file. have questions here.

  1. how parse generated cfg file gcc?
  2. how mark vertexes hit running tests?

i found many related questions , answers, no 1 satisfies questions. idea appreciated.

thanks


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