[llvm] [MemProf] Don't mutate the function type when calling clone (PR #147829)

[Snehasish Kumar via llvm-commits]

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@@ -95,6 +95,7 @@ STATISTIC(NewMergedNodes, "Number of new nodes created during merging");
 STATISTIC(NonNewMergedNodes, "Number of non new nodes used during merging");
 STATISTIC(MissingAllocForContextId,
           "Number of missing alloc nodes for context ids");
+STATISTIC(SkippedCallsCloning, "Number of calls skipped during cloning");
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snehasish wrote:

I wonder if this could be more specific to the reason it was skipped? On the other hand, is this case the only place where we may skip calls during cloning?

https://github.com/llvm/llvm-project/pull/147829