[clang] nolock/noalloc attributes (PR #84983)

[via cfe-commits]

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@@ -1402,6 +1402,29 @@ def CXX11NoReturn : InheritableAttr {
   let Documentation = [CXX11NoReturnDocs];
 }
 
+def NoLock : DeclOrTypeAttr {
+  let Spellings = [CXX11<"clang", "nolock">,
+                   C23<"clang", "nolock">,
+                   GNU<"clang_nolock">];
+
+  // Subjects - not needed?
+  //let Subjects = SubjectList<[FunctionLike, Block, TypedefName], ErrorDiag>;
+  let Args = [DefaultBoolArgument<"Cond", /*default*/1>];
+  let HasCustomParsing = 0;
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Sirraide wrote:

(this is about `HasCustomParsing`; just pointing that out because Github selected more than just the one line I told it to comment on)

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