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

[via cfe-commits]

================
@@ -10778,6 +10778,101 @@ def warn_imp_cast_drops_unaligned : Warning<
   "implicit cast from type %0 to type %1 drops __unaligned qualifier">,
   InGroup<DiagGroup<"unaligned-qualifier-implicit-cast">>;
 
+def warn_func_effect_allocates : Warning<
+  "'%0' function '%1' must not allocate or deallocate memory">,
+  InGroup<FunctionEffects>;
+
+def note_func_effect_allocates : Note<
+  "'%1' cannot be inferred '%0' because it allocates/deallocates memory">;
----------------
Sirraide wrote:

Hmm, I’m not sure I follow; `%0` is the first thing you pass to the diagnostic, `%1` the second, so swapping `%0` and `%1` in the note and swapping the order in which you pass the args to the diagnostic should work, or am I missing something?

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