[llvm] [IR2Vec] Changes to support programmatic creation of Vocabulary (PR #177348)

[Mircea Trofin via llvm-commits]

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@@ -327,6 +327,16 @@ class Vocabulary {
   Vocabulary(Vocabulary &&) = default;
   Vocabulary &operator=(Vocabulary &&Other) = delete;
 
+  /// Create a Vocabulary by loading embeddings from a JSON file.
+  /// This is the primary entry point for programmatic vocabulary creation,
+  /// suitable for use in Python bindings or other contexts where command-line
+  /// options are not available. Weights are applied to scale the embeddings
+  /// for opcodes, types, and arguments respectively.
+  LLVM_ABI static Expected<Vocabulary> fromFile(StringRef VocabFilePath,
+                                                float OpcWeight = 1.0,
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mtrofin wrote:

would these make sense to come from flag values?

https://github.com/llvm/llvm-project/pull/177348