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

[Aaron Ballman via cfe-commits]

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@@ -73,7 +73,7 @@ namespace {
       //   value of the expression to the unqualified, non-atomic version of
       //   the named type.
       if (!S.Context.getLangOpts().ObjC && !DestType->isRecordType() &&
-          !DestType->isArrayType()) {
+          !DestType->isArrayType() && !DestType.getPointerAuth()) {
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AaronBallman wrote:

This is a bit of a surprise -- no other qualifier behaves this way, even the weird `_Atomic` qualifier. I think this needs comments explaining what's going on.

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