[llvm] Refactoring llvm-ir2vec.cpp for better separation of concerns in the Tooling classes (PR #170078)

[Nishant Sachdeva via llvm-commits]

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@@ -151,7 +152,30 @@ static cl::opt<EmbeddingLevel>
           cl::init(FunctionLevel), cl::sub(EmbeddingsSubCmd),
           cl::cat(CommonCategory));
 
+struct Triplet {
+  unsigned Head;
+  unsigned Tail;
+  unsigned Relation;
+};
+
+struct TripletResult {
+  unsigned MaxRelation;
+  std::vector<Triplet> Triplets;
+};
+
 namespace ir2vec {
+/// Entity mappings: [entity_name]
+using EntityList = std::vector<std::string>;
+
+/// Basic block embeddings: [{bb_ptr, Embedding}]
+using BBVecList = std::vector<std::pair<const BasicBlock *, ir2vec::Embedding>>;
+
+/// Instruction embeddings: [{instruction_ptr, Embedding}]
+using InstVecList =
+    std::vector<std::pair<const Instruction *, ir2vec::Embedding>>;
+
+/// Function embeddings: [Embedding]
+using FuncVecList = std::vector<ir2vec::Embedding>;
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nishant-sachdeva wrote:

Accepted this. 

This is going to be useful with the upcoming Python bindings. Removing this for now

https://github.com/llvm/llvm-project/pull/170078