[clang] [Clang] Re-write codegen for atomic_test_and_set and atomic_clear (PR #121943)

[Oliver Stannard via cfe-commits]

================
@@ -1977,16 +1977,16 @@ def AtomicNandFetch : AtomicBuiltin {
   let Prototype = "void(...)";
 }
 
-def AtomicTestAndSet : Builtin {
+def AtomicTestAndSet : AtomicBuiltin {
   let Spellings = ["__atomic_test_and_set"];
-  let Attributes = [NoThrow];
-  let Prototype = "bool(void volatile*, int)";
+  let Attributes = [NoThrow, CustomTypeChecking];
+  let Prototype = "void(...)";
----------------
ostannard wrote:

Done

https://github.com/llvm/llvm-project/pull/121943
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