Filter out candidates with the same name but different instructions, … (#925)

* Filter out candidates with the same name but different instructions, file IDs, and function names

* polish

* improve log

* improving log

* improve log

* Improve function signature (#2)

* try to fix ci

* try to fix ci

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Co-authored-by: gagb <gagb@users.noreply.github.com>
Co-authored-by: Chi Wang <wang.chi@microsoft.com>