--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lldb/source/Symbol/CompilerDecl.cpp	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,49 @@
+//===-- CompilerDecl.cpp --------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Symbol/CompilerDecl.h"
+#include "lldb/Symbol/CompilerDeclContext.h"
+#include "lldb/Symbol/TypeSystem.h"
+
+using namespace lldb_private;
+
+ConstString CompilerDecl::GetName() const {
+  return m_type_system->DeclGetName(m_opaque_decl);
+}
+
+ConstString CompilerDecl::GetMangledName() const {
+  return m_type_system->DeclGetMangledName(m_opaque_decl);
+}
+
+CompilerDeclContext CompilerDecl::GetDeclContext() const {
+  return m_type_system->DeclGetDeclContext(m_opaque_decl);
+}
+
+CompilerType CompilerDecl::GetFunctionReturnType() const {
+  return m_type_system->DeclGetFunctionReturnType(m_opaque_decl);
+}
+
+size_t CompilerDecl::GetNumFunctionArguments() const {
+  return m_type_system->DeclGetFunctionNumArguments(m_opaque_decl);
+}
+
+CompilerType CompilerDecl::GetFunctionArgumentType(size_t arg_idx) const {
+  return m_type_system->DeclGetFunctionArgumentType(m_opaque_decl, arg_idx);
+}
+
+bool lldb_private::operator==(const lldb_private::CompilerDecl &lhs,
+                              const lldb_private::CompilerDecl &rhs) {
+  return lhs.GetTypeSystem() == rhs.GetTypeSystem() &&
+         lhs.GetOpaqueDecl() == rhs.GetOpaqueDecl();
+}
+
+bool lldb_private::operator!=(const lldb_private::CompilerDecl &lhs,
+                              const lldb_private::CompilerDecl &rhs) {
+  return lhs.GetTypeSystem() != rhs.GetTypeSystem() ||
+         lhs.GetOpaqueDecl() != rhs.GetOpaqueDecl();
+}