[llvm] [IR2Vec] Exposing Embedding as an ADT wrapped around std::vector<double> (PR #143197)

[S. VenkataKeerthy via llvm-commits]

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@@ -53,7 +53,24 @@ class raw_ostream;
 enum class IR2VecKind { Symbolic };
 
 namespace ir2vec {
-using Embedding = std::vector<double>;
+/// Embedding is a ADT that wraps std::vector<double>. It provides
+/// additional functionality for arithmetic and comparison operations.
+struct Embedding : public std::vector<double> {
+  using std::vector<double>::vector;
+
+  /// Arithmetic operators
+  Embedding &operator+=(const Embedding &RHS);
+  Embedding &operator-=(const Embedding &RHS);
+
+  /// Adds Src Embedding scaled by Factor with the called Embedding.
+  /// Called_Embedding += Src * Factor
+  void scaleAndAdd(const Embedding &Src, float Factor);
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svkeerthy wrote:

Done

https://github.com/llvm/llvm-project/pull/143197