diff --git a/llvm/include/llvm/TableGen/Parser.h b/llvm/include/llvm/TableGen/Parser.h
new file mode 100644
--- /dev/null
+++ b/llvm/include/llvm/TableGen/Parser.h
@@ -0,0 +1,35 @@
+//===- llvm/TableGen/Parser.h - tblgen parser entry point -------*- 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 declares an entry point into the tablegen parser for use by tools.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TABLEGEN_PARSER_H
+#define LLVM_TABLEGEN_PARSER_H
+
+#include "llvm/ADT/STLExtras.h"
+
+namespace llvm {
+class MemoryBuffer;
+class RecordKeeper;
+
+/// Peform the tablegen action using the given set of parsed records. Returns
+/// true on error, false otherwise.
+using TableGenParserFn = function_ref<bool(RecordKeeper &)>;
+
+/// Parse the given input buffer containing a tablegen file, invoking the
+/// provided parser function with the set of parsed records. Returns true on
+/// failure, false otherwise.
+bool TableGenParseFile(std::unique_ptr<MemoryBuffer> Buffer,
+                       std::vector<std::string> IncludeDirs,
+                       TableGenParserFn ParserFn);
+
+} // end namespace llvm
+
+#endif // LLVM_TABLEGEN_PARSER_H
diff --git a/llvm/lib/TableGen/CMakeLists.txt b/llvm/lib/TableGen/CMakeLists.txt
--- a/llvm/lib/TableGen/CMakeLists.txt
+++ b/llvm/lib/TableGen/CMakeLists.txt
@@ -3,6 +3,7 @@
   Error.cpp
   JSONBackend.cpp
   Main.cpp
+  Parser.cpp
   Record.cpp
   SetTheory.cpp
   StringMatcher.cpp
diff --git a/llvm/lib/TableGen/Parser.cpp b/llvm/lib/TableGen/Parser.cpp
new file mode 100644
--- /dev/null
+++ b/llvm/lib/TableGen/Parser.cpp
@@ -0,0 +1,30 @@
+//===- Parser.cpp - Top-Level TableGen Parser implementation --------------===//
+//
+// 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 "llvm/TableGen/Parser.h"
+#include "TGParser.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
+
+using namespace llvm;
+
+bool llvm::TableGenParseFile(std::unique_ptr<MemoryBuffer> Buffer,
+                             std::vector<std::string> IncludeDirs,
+                             TableGenParserFn ParserFn) {
+  RecordKeeper Records;
+  Records.saveInputFilename(Buffer->getBufferIdentifier().str());
+
+  SrcMgr.AddNewSourceBuffer(std::move(Buffer), SMLoc());
+  SrcMgr.setIncludeDirs(IncludeDirs);
+  TGParser Parser(SrcMgr, /*Macros=*/None, Records);
+  if (Parser.ParseFile())
+    return true;
+
+  return ParserFn(Records);
+}
diff --git a/llvm/unittests/TableGen/CMakeLists.txt b/llvm/unittests/TableGen/CMakeLists.txt
--- a/llvm/unittests/TableGen/CMakeLists.txt
+++ b/llvm/unittests/TableGen/CMakeLists.txt
@@ -10,8 +10,9 @@
 add_public_tablegen_target(AutomataTestTableGen)
 
 add_llvm_unittest(TableGenTests DISABLE_LLVM_LINK_LLVM_DYLIB
-  CodeExpanderTest.cpp
   AutomataTest.cpp
+  CodeExpanderTest.cpp
+  ParserEntryPointTest.cpp
   )
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../../utils/TableGen)
 target_link_libraries(TableGenTests PRIVATE LLVMTableGenGlobalISel LLVMTableGen)
diff --git a/llvm/unittests/TableGen/ParserEntryPointTest.cpp b/llvm/unittests/TableGen/ParserEntryPointTest.cpp
new file mode 100644
--- /dev/null
+++ b/llvm/unittests/TableGen/ParserEntryPointTest.cpp
@@ -0,0 +1,39 @@
+//===- unittest/TableGen/ParserEntryPointTest.cpp - Parser tests ----------===//
+//
+// 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 "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/TableGen/Parser.h"
+#include "llvm/TableGen/Record.h"
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+using namespace llvm;
+
+TEST(Parser, SanityTest) {
+  // Simple TableGen source file with a single record.
+  const char *SimpleTdSource = R"td(
+    def Foo {
+      string strField = "value";
+    }
+  )td";
+
+  auto ProcessFn = [&](const RecordKeeper &Records) {
+    Record *Foo = Records.getDef("Foo");
+    Optional<StringRef> Field = Foo->getValueAsOptionalString("strField");
+    EXPECT_TRUE(Field.hasValue());
+    EXPECT_EQ(Field.getValue(), "value");
+    return false;
+  };
+
+  bool ProcessResult = TableGenParseFile(
+      MemoryBuffer::getMemBuffer(SimpleTdSource, "test_buffer"),
+      /*IncludeDirs=*/{}, ProcessFn);
+  EXPECT_FALSE(ProcessResult);
+}