[lldb] Replace literal "__C" with MANGLING_MODULE_OBJC (NFC)

Author: kastiglione

lldb/source/Plugins/LanguageRuntime/Swift/SwiftLanguageRuntimeDynamicTypeResolution.cpp

@@ -39,6 +39,7 @@
 #include "swift/Remote/MemoryReader.h"
 #include "swift/RemoteAST/RemoteAST.h"
 #include "swift/Runtime/Metadata.h"
+#include "swift/Strings.h"
 
 #include <sstream>
 
@@ -2971,7 +2972,9 @@ bool SwiftLanguageRuntimeImpl::GetDynamicTypeAndAddress_ClangType(
     NodePointer cty = factory.createNode(Node::Kind::Type);
     list->addChild(cty, factory);
     NodePointer c = factory.createNode(Node::Kind::Class);
-    c->addChild(factory.createNode(Node::Kind::Module, "__C"), factory);
+    c->addChild(
+        factory.createNode(Node::Kind::Module, swift::MANGLING_MODULE_OBJC),
+        factory);
     c->addChild(factory.createNode(Node::Kind::Identifier, dyn_name), factory);
     cty->addChild(c, factory);
 

lldb/source/Plugins/TypeSystem/Swift/TypeSystemSwiftTypeRef.cpp

@@ -899,7 +899,7 @@ CompilerType TypeSystemSwiftTypeRef::GetBuiltinRawPointerType() {
 static bool IsImportedType(swift::Demangle::NodePointer node) {
   if (!node)
     return false;
-  if (node->hasText() && node->getText() == "__C")
+  if (node->hasText() && node->getText() == swift::MANGLING_MODULE_OBJC)
     return true;
   if (node->hasChildren())
     return IsImportedType(node->getFirstChild());
@@ -3920,7 +3920,7 @@ static bool IsSIMDNode(NodePointer node) {
     NodePointer module = node->getFirstChild();
     NodePointer identifier = node->getChild(1);
     return module->getKind() == Node::Kind::Module &&
-           module->getText() == "__C" &&
+           module->getText() == swift::MANGLING_MODULE_OBJC &&
            identifier->getKind() == Node::Kind::Identifier &&
            identifier->getText().startswith("simd_");
   }