handle conformance requirement on extension in distributed funcs

Author: ktoso

include/swift/AST/ASTSynthesis.h

@@ -41,15 +41,16 @@ enum SingletonTypeSynthesizer {
   _any,
   _bridgeObject,
   _error,
-  _executor,
+  _executor, // the 'BuiltinExecutor' type
   _job,
   _nativeObject,
   _never,
   _rawPointer,
   _rawUnsafeContinuation,
   _void,
   _word,
-  _serialExecutor,
+  _executorProtocol, // the '_Concurrency.Executor' protocol
+  _serialExecutor, // the '_Concurrency.SerialExecutor' protocol
 };
 inline Type synthesizeType(SynthesisContext &SC,
                            SingletonTypeSynthesizer kind) {
@@ -66,9 +67,15 @@ inline Type synthesizeType(SynthesisContext &SC,
   case _void: return SC.Context.TheEmptyTupleType;
   case _word: return BuiltinIntegerType::get(BuiltinIntegerWidth::pointer(),
                                              SC.Context);
-  case _serialExecutor:
+  case _executorProtocol:
+    return SC.Context.getProtocol(KnownProtocolKind::Executor)
+      ->getDeclaredInterfaceType();
+    case _serialExecutor:
     return SC.Context.getProtocol(KnownProtocolKind::SerialExecutor)
       ->getDeclaredInterfaceType();
+  case _taskExecutor:
+    return SC.Context.getProtocol(KnownProtocolKind::TaskExecutor)
+      ->getDeclaredInterfaceType();
   }
 }
 

include/swift/AST/DistributedDecl.h

@@ -115,6 +115,6 @@ getDistributedSerializationRequirements(
     ProtocolDecl *protocol,
     llvm::SmallPtrSetImpl<ProtocolDecl *> &requirementProtos);
 
-// ==== ------------------------------------------------------------------------
+}
 
 #endif /* SWIFT_DECL_DISTRIBUTEDDECL_H */