[llvm] [FnSpecialization] Enable function specialization of call chains (PR #163891)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions h,cpp -- llvm/include/llvm/Transforms/IPO/FunctionSpecialization.h llvm/lib/Transforms/IPO/FunctionSpecialization.cpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/llvm/include/llvm/Transforms/IPO/FunctionSpecialization.h b/llvm/include/llvm/Transforms/IPO/FunctionSpecialization.h
index a8f6447c9..84bdd5c23 100644
--- a/llvm/include/llvm/Transforms/IPO/FunctionSpecialization.h
+++ b/llvm/include/llvm/Transforms/IPO/FunctionSpecialization.h
@@ -127,9 +127,7 @@ struct SpecSig {
   }
 };
 
-enum CallSiteStatusT {
-  AWAITING_PARENT, HAS_PARENT, NO_PARENT
-};
+enum CallSiteStatusT { AWAITING_PARENT, HAS_PARENT, NO_PARENT };
 
 struct SpecCall {
   CallBase *CallSite;

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https://github.com/llvm/llvm-project/pull/163891