Add relevant logic to lldb to eliminate warnings and try to fix failed tests

Author: YexuanXiao

lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp

@@ -2566,6 +2566,7 @@ RemoveWrappingTypes(QualType type, ArrayRef<clang::Type::TypeClass> mask = {}) {
     case clang::Type::TypeOf:
     case clang::Type::TypeOfExpr:
     case clang::Type::Using:
+    case clang::Type::PredefinedSugar:
       type = type->getLocallyUnqualifiedSingleStepDesugaredType();
       break;
     default:
@@ -4141,6 +4142,7 @@ TypeSystemClang::GetTypeClass(lldb::opaque_compiler_type_t type) {
   case clang::Type::TypeOf:
   case clang::Type::TypeOfExpr:
   case clang::Type::Using:
+  case clang::Type::PredefinedSugar:
     llvm_unreachable("Handled in RemoveWrappingTypes!");
   case clang::Type::UnaryTransform:
     break;
@@ -4851,6 +4853,7 @@ lldb::Encoding TypeSystemClang::GetEncoding(lldb::opaque_compiler_type_t type,
   case clang::Type::TypeOf:
   case clang::Type::TypeOfExpr:
   case clang::Type::Using:
+  case clang::Type::PredefinedSugar:
     llvm_unreachable("Handled in RemoveWrappingTypes!");
 
   case clang::Type::UnaryTransform:
@@ -5152,6 +5155,7 @@ lldb::Format TypeSystemClang::GetFormat(lldb::opaque_compiler_type_t type) {
   case clang::Type::TypeOf:
   case clang::Type::TypeOfExpr:
   case clang::Type::Using:
+  case clang::Type::PredefinedSugar:
     llvm_unreachable("Handled in RemoveWrappingTypes!");
   case clang::Type::UnaryTransform:
     break;