[clang] [clang][codegen] Mention the invariant that LLVM demangler should be … (PR #117346)

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``````````bash
git-clang-format --diff 026af9e972469c878e51f1215659b7264da0136d abd3c27d94b7f18990377d518aa8e14b32659b5f --extensions cpp -- clang/lib/CodeGen/CodeGenModule.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index 6eef085ae3..26acf67c9b 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -2048,7 +2048,8 @@ StringRef CodeGenModule::getMangledName(GlobalDecl GD) {
                  ND));
 
   // This invariant should hold true in the future.
-  // Prior work: https://discourse.llvm.org/t/rfc-clang-diagnostic-for-demangling-failures/82835/8
+  // Prior work:
+  // https://discourse.llvm.org/t/rfc-clang-diagnostic-for-demangling-failures/82835/8
   // https://github.com/llvm/llvm-project/issues/111345
   // assert(llvm::isMangledName(MangledName) &&
   //        llvm::demangle(MangledName) != MangledName &&

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https://github.com/llvm/llvm-project/pull/117346