Demangling: Add option for printing simplified async resume functions

Author: kastiglione

include/swift/Demangling/Demangle.h

@@ -63,6 +63,7 @@ struct DemangleOptions {
   bool DisplayStdlibModule = true;
   bool DisplayObjCModule = true;
   bool PrintForTypeName = false;
+  bool ShowAsyncResumePartial = true;
 
   /// If this is nonempty, entities in this module name will not be qualified.
   llvm::StringRef HidingCurrentModule;

lib/Demangling/NodePrinter.cpp

@@ -2812,16 +2812,20 @@ NodePointer NodePrinter::print(NodePointer Node, bool asPrefixContext) {
     Printer << "async function pointer to ";
     return nullptr;
   case Node::Kind::AsyncAwaitResumePartialFunction:
-    Printer << "(";
-    print(Node->getChild(0));
-    Printer << ")";
-    Printer << " await resume partial function for ";
+    if (Options.ShowAsyncResumePartial) {
+      Printer << "(";
+      print(Node->getChild(0));
+      Printer << ")";
+      Printer << " await resume partial function for ";
+    }
     return nullptr;
   case Node::Kind::AsyncSuspendResumePartialFunction:
-    Printer << "(";
-    print(Node->getChild(0));
-    Printer << ")";
-    Printer << " suspend resume partial function for ";
+    if (Options.ShowAsyncResumePartial) {
+      Printer << "(";
+      print(Node->getChild(0));
+      Printer << ")";
+      Printer << " suspend resume partial function for ";
+    }
     return nullptr;
   }