[clang] nonblocking/nonallocating attributes (was: nolock/noalloc) (PR #84983)

[Chris Apple via cfe-commits]

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@@ -8057,3 +8057,70 @@ requirement:
   }
   }];
 }
+
+def DocCatNonBlockingNonAllocating : DocumentationCategory<"Performance Constraint Attributes"> {
+  let Content = [{
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cjappl wrote:

It may be good to mention what the flag is that you use to enable these warnings.

https://github.com/llvm/llvm-project/pull/84983