[llvm] [NFC][Cloning] Make DifferentModule case more obvious in CollectDebugInfoForCloning (PR #129146)

[Artem Pianykh via llvm-commits]

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@@ -147,8 +147,10 @@ void llvm::CloneFunctionAttributesInto(Function *NewFunc,
 DISubprogram *llvm::CollectDebugInfoForCloning(const Function &F,
                                                CloneFunctionChangeType Changes,
                                                DebugInfoFinder &DIFinder) {
-  // CloneModule takes care of cloning debug info.
-  if (Changes == CloneFunctionChangeType::ClonedModule)
+  // CloneModule takes care of cloning debug info for ClonedModule. Cloning into
+  // DifferentModule is taken care of separately in ClonedFunctionInto as part
+  // of llvm.dbg.cu update.
+  if (Changes >= CloneFunctionChangeType::DifferentModule)
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artempyanykh wrote:

Given that FindDebugInfoToIdentityMap and CollectDebugInfoForCloning get removed later in the stack, I'm going to go ahead and merge this. Please, let me know if I missed something important and I'll fix it on top.

https://github.com/llvm/llvm-project/pull/129146