[cfe-dev] Question about LLVM dependence graph

[Feng Lu]

Hi, all,
 I am new to LLVM and Clang,
 I am interested in the following problem:
   Given a function with parameters, obtain the part of parameters which
are used in branch conditions within the function or sub-functions.

For the following example, I hope to get v.c1
  struct p {
      int c1,
      int c2
  };
  void foo (p v) {
      if (v.c1)
          ...
      else
         ...
  }

Does LLVM or Clang contains the code that could easily achieve this
efficiently?

Thanks,
Feng Lu
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