[clang] [PAC] Add support for __ptrauth type qualifier (PR #100830)

[Aaron Ballman via cfe-commits]

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@@ -2850,6 +2850,26 @@ void CXXNameMangler::mangleQualifiers(Qualifiers Quals, const DependentAddressSp
   if (Quals.hasUnaligned())
     mangleVendorQualifier("__unaligned");
 
+  // __ptrauth.  Note that this is parameterized.
+  if (PointerAuthQualifier PtrAuth = Quals.getPointerAuth()) {
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AaronBallman wrote:

We seem to be missing mangling for Microsoft; should we be using a vendor mangling there?

https://github.com/llvm/llvm-project/pull/100830