--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/lib/Interpreter/IncrementalExecutor.h	Tue Jun 15 19:15:29 2021 +0900
@@ -0,0 +1,48 @@
+//===--- IncrementalExecutor.h - Incremental Execution ----------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the class which performs incremental code execution.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_LIB_INTERPRETER_INCREMENTALEXECUTOR_H
+#define LLVM_CLANG_LIB_INTERPRETER_INCREMENTALEXECUTOR_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/ExecutionEngine/Orc/ExecutionUtils.h"
+
+#include <memory>
+
+namespace llvm {
+class Error;
+class Module;
+namespace orc {
+class LLJIT;
+class ThreadSafeContext;
+} // namespace orc
+} // namespace llvm
+
+namespace clang {
+class IncrementalExecutor {
+  using CtorDtorIterator = llvm::orc::CtorDtorIterator;
+  std::unique_ptr<llvm::orc::LLJIT> Jit;
+  llvm::orc::ThreadSafeContext &TSCtx;
+
+public:
+  IncrementalExecutor(llvm::orc::ThreadSafeContext &TSC, llvm::Error &Err,
+                      const llvm::Triple &Triple);
+  ~IncrementalExecutor();
+
+  llvm::Error addModule(std::unique_ptr<llvm::Module> M);
+  llvm::Error runCtors() const;
+};
+
+} // end namespace clang
+
+#endif // LLVM_CLANG_LIB_INTERPRETER_INCREMENTALEXECUTOR_H