[llvm] [MergeFunctions] Preserve instruction-level profile metadata during merging (PR #208009)

[Alok Kumar Sharma via llvm-commits]

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@@ -198,10 +213,13 @@ class MergeFunctions {
   }
 
   template <typename FuncContainer> bool run(FuncContainer &Functions);
-  DenseMap<Function *, Function *> runOnFunctions(ArrayRef<Function *> F);
+  DenseMap<Function *, Function *>
+  runOnFunctions(ArrayRef<Function *> F, FunctionAnalysisManager *AM = nullptr);
 
   SmallPtrSet<GlobalValue *, 4> &getUsed();
 
+  void setFunctionAnalysisManager(FunctionAnalysisManager *AM) { FAM = AM; }
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alokkrsharma wrote:

Agreed. I’ll refactor the helper APIs to use ModuleAnalysisManager and retrieve FAM through FunctionAnalysisManagerModuleProxy.

https://github.com/llvm/llvm-project/pull/208009