Mangling: add a dumpNode function to make it easier from the debugger to dump a node tree

Author: eeckstein

include/swift/Basic/DemangleWrappers.h

@@ -39,6 +39,9 @@ class NodeDumper {
   void print(llvm::raw_ostream &Out) const;
 };
 
+/// Utility function, useful to be called from the debugger.
+void dumpNode(const NodePointer &Root);
+
 NodePointer
 demangleSymbolAsNode(StringRef MangledName,
                      const DemangleOptions &Options = DemangleOptions());

lib/Basic/DemangleWrappers.cpp

@@ -55,6 +55,10 @@ void NodeDumper::print(llvm::raw_ostream &Out) const {
   printNode(Out, Root.get(), 0);
 }
 
+void swift::demangle_wrappers::dumpNode(const NodePointer &Root) {
+  NodeDumper(Root).dump();
+}
+
 namespace {
 /// A pretty-stack-trace node for demangling trees.
 class PrettyStackTraceNode : public llvm::PrettyStackTraceEntry {