[clang] [PAC] Authenticate function pointers in UBSan type checks (PR #99590)

[Anton Korobeynikov via cfe-commits]

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@@ -13,6 +15,8 @@ void fun() {}
 // ARM:   ptrtoint ptr {{.*}} to i32, !nosanitize !5
 // ARM:   and i32 {{.*}}, -2, !nosanitize !5
 // ARM:   inttoptr i32 {{.*}} to ptr, !nosanitize !5
+// 64e:   %[[STRIPPED:.*]] = ptrtoint ptr {{.*}} to i64, !nosanitize
+// 64e:   call i64 @llvm.ptrauth.auth(i64 %[[STRIPPED]], i32 0, i64 0), !nosanitize
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asl wrote:

Sadly we are not checking full sequence here :( But this is not a problem of this patch, it is just underlying test done this way

https://github.com/llvm/llvm-project/pull/99590