[clang] [llvm] [X86] Enhance kCFI type IDs with a 3-bit arity indicator. (PR #117121)

[Scott Constable via cfe-commits]

================
@@ -208,10 +209,34 @@ void llvm::setKCFIType(Module &M, Function &F, StringRef 
MangledType) {
   std::string Type = MangledType.str();
   if (M.getModuleFlag("cfi-normalize-integers"))
     Type += ".normalized";
+
+  uint32_t OutHash = static_cast<uint32_t>(llvm::xxHash64(Type));
+  auto T = Triple(Twine(M.getTargetTriple()));
----------------
scottconstable wrote:

Thank you for the suggestion! This does look tidier than what I had written. I 
updated the PR.

https://github.com/llvm/llvm-project/pull/117121
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