[llvm-branch-commits] [llvm] [BOLT] Name similarity function matching (PR #95884)

[Amir Ayupov via llvm-branch-commits]

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@@ -415,11 +422,87 @@ Error YAMLProfileReader::readProfile(BinaryContext &BC) {
     if (!YamlBF.Used && BF && !ProfiledFunctions.count(BF))
       matchProfileToFunction(YamlBF, *BF);
 
+  // Uses name similarity to match functions that were not matched by name.
+  uint64_t MatchedWithNameSimilarity = 0;
+
+  if (opts::NameSimilarityFunctionMatchingThreshold > 0) {
+    auto DemangleName = [&](std::string &FunctionName) {
+      StringRef RestoredName = NameResolver::restore(FunctionName);
+      return demangle(RestoredName);
+    };
+
+    auto DeriveNameSpace = [&](ItaniumPartialDemangler &ItaniumPartialDemangler,
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aaupov wrote:

You can have ItaniumPartialDemangler defined above, and it will be captured by DeriveNameSpace lambda, so no need to pass it explicitly.

https://github.com/llvm/llvm-project/pull/95884