[clang] [Clang] Add wraps attribute (for granular integer overflow handling) (PR #86618)

[Erich Keane via cfe-commits]

================
@@ -4506,3 +4506,9 @@ def CodeAlign: StmtAttr {
     static constexpr int MaximumAlignment = 4096;
   }];
 }
+
+def Wraps : DeclOrTypeAttr {
+  let Spellings = [GNU<"wraps">];
+  let Subjects = SubjectList<[Var, TypedefName, Field]>;
+  let Documentation = [WrapsDocs];
+}
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erichkeane wrote:

```suggestion
let LangOpts = [COnly];
}
```

??

https://github.com/llvm/llvm-project/pull/86618