Move TableGen's parser and entry point into a library

This is the first step towards splitting LLVM and Clang's tblgen executables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140951 91177308-0d34-0410-b5e6-96231b3b80d8

77 files changed, 369 insertions, 241 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e767ce0d24..874f381a21 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -195,6 +195,7 @@ endif()
 
 # Put this before tblgen. Else we have a circular dependence.
 add_subdirectory(lib/Support)
+add_subdirectory(lib/TableGen)
 
 set(LLVM_TABLEGEN "tblgen" CACHE
   STRING "Native TableGen executable. Saves building one when cross-compiling.")
diff --git a/Makefile b/Makefile
index 610deba36b..2a36a7a26e 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@
 LEVEL := .
 
 # Top-Level LLVM Build Stages:
-#   1. Build lib/Support, which is used by utils (tblgen).
+#   1. Build lib/Support and lib/TableGen, which are used by utils (tblgen).
 #   2. Build utils, which is used by VMCore.
 #   3. Build VMCore, which builds the Intrinsics.inc file used by libs.
 #   4. Build libs, which are needed by llvm-config.
@@ -27,10 +27,10 @@ LEVEL := .
 ifneq ($(findstring llvmCore, $(RC_ProjectName)),llvmCore)  # Normal build (not "Apple-style").
 
 ifeq ($(BUILD_DIRS_ONLY),1)
-  DIRS := lib/Support utils
+  DIRS := lib/Support lib/TableGen utils
   OPTIONAL_DIRS :=
 else
-  DIRS := lib/Support utils lib/VMCore lib tools/llvm-shlib \
+  DIRS := lib/Support lib/TableGen utils lib/VMCore lib tools/llvm-shlib \
           tools/llvm-config tools runtime docs unittests
   OPTIONAL_DIRS := projects bindings
 endif
diff --git a/utils/TableGen/Error.h b/include/llvm/TableGen/Error.h
index b3a0146194..c01b32b1c2 100644
--- a/utils/TableGen/Error.h
+++ b/include/llvm/TableGen/Error.h
@@ -1,4 +1,4 @@
-//===- Error.h - tblgen error handling helper routines ----------*- C++ -*-===//
+//===- llvm/TableGen/Error.h - tblgen error handling helpers ----*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -12,8 +12,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef ERROR_H
-#define ERROR_H
+#ifndef LLVM_TABLEGEN_ERROR_H
+#define LLVM_TABLEGEN_ERROR_H
 
 #include "llvm/Support/SourceMgr.h"
 
diff --git a/include/llvm/TableGen/Main.h b/include/llvm/TableGen/Main.h
new file mode 100644
index 0000000000..deaef4a990
--- /dev/null
+++ b/include/llvm/TableGen/Main.h
@@ -0,0 +1,26 @@
+//===- llvm/TableGen/Main.h - tblgen entry point ----------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the common entry point for tblgen tools.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TABLEGEN_MAIN_H
+#define LLVM_TABLEGEN_MAIN_H
+
+namespace llvm {
+
+class TableGenAction;
+
+/// Run the table generator, performing the specified Action on parsed records.
+int TableGenMain(char *argv0, TableGenAction &Action);
+
+}
+
+#endif
diff --git a/utils/TableGen/Record.h b/include/llvm/TableGen/Record.h
index 84313e66d5..afce760998 100644
--- a/utils/TableGen/Record.h
+++ b/include/llvm/TableGen/Record.h
@@ -1,5 +1,4 @@
-
-//===- Record.h - Classes to represent Table Records ------------*- C++ -*-===//
+//===- llvm/TableGen/Record.h - Classes for Table Records -------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -13,8 +12,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef RECORD_H
-#define RECORD_H
+#ifndef LLVM_TABLEGEN_RECORD_H
+#define LLVM_TABLEGEN_RECORD_H
 
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/FoldingSet.h"
diff --git a/include/llvm/TableGen/TableGenAction.h b/include/llvm/TableGen/TableGenAction.h
new file mode 100644
index 0000000000..9f1c23c5b4
--- /dev/null
+++ b/include/llvm/TableGen/TableGenAction.h
@@ -0,0 +1,34 @@
+//===- llvm/TableGen/TableGenAction.h - defines TableGenAction --*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the TableGenAction base class to be derived from by
+// tblgen tools.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TABLEGEN_TABLEGENACTION_H
+#define LLVM_TABLEGEN_TABLEGENACTION_H
+
+namespace llvm {
+
+class raw_ostream;
+class RecordKeeper;
+
+class TableGenAction {
+public:
+  virtual ~TableGenAction() {}
+
+  /// Perform the action using Records, and write output to OS.
+  /// @returns true on error, false otherwise
+  virtual bool operator()(raw_ostream &OS, RecordKeeper &Records) = 0;
+};
+
+}
+
+#endif
diff --git a/utils/TableGen/TableGenBackend.h b/include/llvm/TableGen/TableGenBackend.h
index 9c2b948b0d..853f92e406 100644
--- a/utils/TableGen/TableGenBackend.h
+++ b/include/llvm/TableGen/TableGenBackend.h
@@ -1,4 +1,4 @@
-//===- TableGenBackend.h - Base class for TableGen Backends -----*- C++ -*-===//
+//===- llvm/TableGen/TableGenBackend.h - Backend base class -----*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -12,8 +12,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef TABLEGENBACKEND_H
-#define TABLEGENBACKEND_H
+#ifndef LLVM_TABLEGEN_TABLEGENBACKEND_H
+#define LLVM_TABLEGEN_TABLEGENBACKEND_H
 
 #include "llvm/Support/raw_ostream.h"
 #include <string>
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index d8a9b7365b..fb63c63f32 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -1,4 +1,4 @@
-# `Support' library is added on the top-level CMakeLists.txt
+# `Support' and `TableGen' libraries are added on the top-level CMakeLists.txt
 
 add_subdirectory(VMCore)
 add_subdirectory(CodeGen)
diff --git a/lib/TableGen/CMakeLists.txt b/lib/TableGen/CMakeLists.txt
new file mode 100644
index 0000000000..0db4134691
--- /dev/null
+++ b/lib/TableGen/CMakeLists.txt
@@ -0,0 +1,16 @@
+## FIXME: This only requires RTTI because tblgen uses it.  Fix that.
+set(LLVM_REQUIRES_RTTI 1)
+set(LLVM_REQUIRES_EH 1)
+
+add_llvm_library(LLVMTableGen
+  Error.cpp
+  Main.cpp
+  Record.cpp
+  TableGenBackend.cpp
+  TGLexer.cpp
+  TGParser.cpp
+  )
+
+add_llvm_library_dependencies(LLVMTableGen
+  LLVMSupport
+  )
diff --git a/utils/TableGen/Error.cpp b/lib/TableGen/Error.cpp
index 3f6cda8977..5b2cbbfec4 100644
--- a/utils/TableGen/Error.cpp
+++ b/lib/TableGen/Error.cpp
@@ -12,7 +12,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "Error.h"
+#include "llvm/TableGen/Error.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/raw_ostream.h"
 
diff --git a/lib/TableGen/Main.cpp b/lib/TableGen/Main.cpp
new file mode 100644
index 0000000000..01bc55e989
--- /dev/null
+++ b/lib/TableGen/Main.cpp
@@ -0,0 +1,124 @@
+//===- Main.cpp - Top-Level TableGen implementation -----------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// TableGen is a tool which can be used to build up a description of something,
+// then invoke one or more "tablegen backends" to emit information about the
+// description in some predefined format.  In practice, this is used by the LLVM
+// code generators to automate generation of a code generator through a
+// high-level description of the target.
+//
+//===----------------------------------------------------------------------===//
+
+#include "TGParser.h"
+#include "llvm/ADT/OwningPtr.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/system_error.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/TableGenAction.h"
+#include <algorithm>
+#include <cstdio>
+using namespace llvm;
+
+namespace {
+  cl::opt<std::string>
+  OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
+                 cl::init("-"));
+
+  cl::opt<std::string>
+  DependFilename("d", cl::desc("Dependency filename"), cl::value_desc("filename"),
+                 cl::init(""));
+
+  cl::opt<std::string>
+  InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
+
+  cl::list<std::string>
+  IncludeDirs("I", cl::desc("Directory of include files"),
+              cl::value_desc("directory"), cl::Prefix);
+}
+
+namespace llvm {
+
+int TableGenMain(char *argv0, TableGenAction &Action) {
+  RecordKeeper Records;
+
+  try {
+    // Parse the input file.
+    OwningPtr<MemoryBuffer> File;
+    if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputFilename.c_str(), File)) {
+      errs() << "Could not open input file '" << InputFilename << "': "
+             << ec.message() <<"\n";
+      return 1;
+    }
+    MemoryBuffer *F = File.take();
+
+    // Tell SrcMgr about this buffer, which is what TGParser will pick up.
+    SrcMgr.AddNewSourceBuffer(F, SMLoc());
+
+    // Record the location of the include directory so that the lexer can find
+    // it later.
+    SrcMgr.setIncludeDirs(IncludeDirs);
+
+    TGParser Parser(SrcMgr, Records);
+
+    if (Parser.ParseFile())
+      return 1;
+
+    std::string Error;
+    tool_output_file Out(OutputFilename.c_str(), Error);
+    if (!Error.empty()) {
+      errs() << argv0 << ": error opening " << OutputFilename
+        << ":" << Error << "\n";
+      return 1;
+    }
+    if (!DependFilename.empty()) {
+      if (OutputFilename == "-") {
+        errs() << argv0 << ": the option -d must be used together with -o\n";
+        return 1;
+      }
+      tool_output_file DepOut(DependFilename.c_str(), Error);
+      if (!Error.empty()) {
+        errs() << argv0 << ": error opening " << DependFilename
+          << ":" << Error << "\n";
+        return 1;
+      }
+      DepOut.os() << OutputFilename << ":";
+      const std::vector<std::string> &Dependencies = Parser.getDependencies();
+      for (std::vector<std::string>::const_iterator I = Dependencies.begin(),
+                                                          E = Dependencies.end();
+           I != E; ++I) {
+        DepOut.os() << " " << (*I);
+      }
+      DepOut.os() << "\n";
+      DepOut.keep();
+    }
+
+    if (Action(Out.os(), Records))
+      return 1;
+
+    // Declare success.
+    Out.keep();
+    return 0;
+
+  } catch (const TGError &Error) {
+    PrintError(Error);
+  } catch (const std::string &Error) {
+    PrintError(Error);
+  } catch (const char *Error) {
+    PrintError(Error);
+  } catch (...) {
+    errs() << argv0 << ": Unknown unexpected exception occurred.\n";
+  }
+
+  return 1;
+}
+
+}
diff --git a/lib/TableGen/Makefile b/lib/TableGen/Makefile
new file mode 100644
index 0000000000..44724389e1
--- /dev/null
+++ b/lib/TableGen/Makefile
@@ -0,0 +1,18 @@
+##===- lib/TableGen/Makefile -------------------------------*- Makefile -*-===##
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+
+LEVEL = ../..
+LIBRARYNAME = LLVMTableGen
+BUILD_ARCHIVE = 1
+
+## FIXME: This only requires RTTI because tblgen uses it.  Fix that.
+REQUIRES_RTTI = 1
+REQUIRES_EH = 1
+
+include $(LEVEL)/Makefile.common
diff --git a/utils/TableGen/Record.cpp b/lib/TableGen/Record.cpp
index 3d42a5233c..b4277973b5 100644
--- a/utils/TableGen/Record.cpp
+++ b/lib/TableGen/Record.cpp
@@ -11,8 +11,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "Record.h"
-#include "Error.h"
+#include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/Error.h"
 #include "llvm/Support/DataTypes.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/Format.h"
diff --git a/utils/TableGen/TGLexer.cpp b/lib/TableGen/TGLexer.cpp
index b4b90ff64e..0dc1c70136 100644
--- a/utils/TableGen/TGLexer.cpp
+++ b/lib/TableGen/TGLexer.cpp
@@ -12,7 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "TGLexer.h"
-#include "Error.h"
+#include "llvm/TableGen/Error.h"
 #include "llvm/Support/SourceMgr.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Config/config.h"
diff --git a/utils/TableGen/TGLexer.h b/lib/TableGen/TGLexer.h
index 84d328b12d..84d328b12d 100644
--- a/utils/TableGen/TGLexer.h
+++ b/lib/TableGen/TGLexer.h
diff --git a/utils/TableGen/TGParser.cpp b/lib/TableGen/TGParser.cpp
index f734b984e1..1601a530b1 100644
--- a/utils/TableGen/TGParser.cpp
+++ b/lib/TableGen/TGParser.cpp
@@ -12,7 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "TGParser.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/StringExtras.h"
 #include <algorithm>
 #include <sstream>
diff --git a/utils/TableGen/TGParser.h b/lib/TableGen/TGParser.h
index 8b56b8a329..b408c80b7a 100644
--- a/utils/TableGen/TGParser.h
+++ b/lib/TableGen/TGParser.h
@@ -15,7 +15,7 @@
 #define TGPARSER_H
 
 #include "TGLexer.h"
-#include "Error.h"
+#include "llvm/TableGen/Error.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/SourceMgr.h"
 #include <map>
diff --git a/utils/TableGen/TableGenBackend.cpp b/lib/TableGen/TableGenBackend.cpp
index b3e33b5f9c..29588db324 100644
--- a/utils/TableGen/TableGenBackend.cpp
+++ b/lib/TableGen/TableGenBackend.cpp
@@ -11,8 +11,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "TableGenBackend.h"
-#include "Record.h"
+#include "llvm/TableGen/TableGenBackend.h"
+#include "llvm/TableGen/Record.h"
 using namespace llvm;
 
 void TableGenBackend::EmitSourceFileHeader(const std::string &Desc,
diff --git a/utils/TableGen/ARMDecoderEmitter.cpp b/utils/TableGen/ARMDecoderEmitter.cpp
index c4bac10cfb..145b96df98 100644
--- a/utils/TableGen/ARMDecoderEmitter.cpp
+++ b/utils/TableGen/ARMDecoderEmitter.cpp
@@ -18,10 +18,10 @@
 
 #include "ARMDecoderEmitter.h"
 #include "CodeGenTarget.h"
-#include "Record.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
+#include "llvm/TableGen/Record.h"
 
 #include <vector>
 #include <map>
diff --git a/utils/TableGen/ARMDecoderEmitter.h b/utils/TableGen/ARMDecoderEmitter.h
index 1faeb91fae..486f899354 100644
--- a/utils/TableGen/ARMDecoderEmitter.h
+++ b/utils/TableGen/ARMDecoderEmitter.h
@@ -15,9 +15,8 @@
 #ifndef ARMDECODEREMITTER_H
 #define ARMDECODEREMITTER_H
 
-#include "TableGenBackend.h"
-
 #include "llvm/Support/DataTypes.h"
+#include "llvm/TableGen/TableGenBackend.h"
 
 namespace llvm {
 
diff --git a/utils/TableGen/AsmMatcherEmitter.cpp b/utils/TableGen/AsmMatcherEmitter.cpp
index 6d5d2de201..e43f8311a8 100644
--- a/utils/TableGen/AsmMatcherEmitter.cpp
+++ b/utils/TableGen/AsmMatcherEmitter.cpp
@@ -98,8 +98,6 @@
 
 #include "AsmMatcherEmitter.h"
 #include "CodeGenTarget.h"
-#include "Error.h"
-#include "Record.h"
 #include "StringMatcher.h"
 #include "llvm/ADT/OwningPtr.h"
 #include "llvm/ADT/PointerUnion.h"
@@ -109,6 +107,8 @@
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
 #include <map>
 #include <set>
 using namespace llvm;
diff --git a/utils/TableGen/AsmMatcherEmitter.h b/utils/TableGen/AsmMatcherEmitter.h
index c13adf3dc5..e04ac103a4 100644
--- a/utils/TableGen/AsmMatcherEmitter.h
+++ b/utils/TableGen/AsmMatcherEmitter.h
@@ -15,7 +15,7 @@
 #ifndef ASMMATCHER_EMITTER_H
 #define ASMMATCHER_EMITTER_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include <cassert>
 
 namespace llvm {
diff --git a/utils/TableGen/AsmWriterEmitter.cpp b/utils/TableGen/AsmWriterEmitter.cpp
index 0f011de710..bb91cd0415 100644
--- a/utils/TableGen/AsmWriterEmitter.cpp
+++ b/utils/TableGen/AsmWriterEmitter.cpp
@@ -14,13 +14,13 @@
 
 #include "AsmWriterEmitter.h"
 #include "AsmWriterInst.h"
-#include "Error.h"
 #include "CodeGenTarget.h"
-#include "Record.h"
 #include "StringToOffsetTable.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/MathExtras.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
 #include <algorithm>
 using namespace llvm;
 
diff --git a/utils/TableGen/AsmWriterEmitter.h b/utils/TableGen/AsmWriterEmitter.h
index 84c925b66e..731e31cc74 100644
--- a/utils/TableGen/AsmWriterEmitter.h
+++ b/utils/TableGen/AsmWriterEmitter.h
@@ -15,7 +15,7 @@
 #ifndef ASMWRITER_EMITTER_H
 #define ASMWRITER_EMITTER_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include <map>
 #include <vector>
 #include <cassert>
diff --git a/utils/TableGen/AsmWriterInst.cpp b/utils/TableGen/AsmWriterInst.cpp
index fdf447f2aa..350a2ccfcc 100644
--- a/utils/TableGen/AsmWriterInst.cpp
+++ b/utils/TableGen/AsmWriterInst.cpp
@@ -13,8 +13,8 @@
 
 #include "AsmWriterInst.h"
 #include "CodeGenTarget.h"
-#include "Record.h"
 #include "llvm/ADT/StringExtras.h"
+#include "llvm/TableGen/Record.h"
 
 using namespace llvm;
 
diff --git a/utils/TableGen/CMakeLists.txt b/utils/TableGen/CMakeLists.txt
index 0202f53c42..9e9a3a1d0d 100644
--- a/utils/TableGen/CMakeLists.txt
+++ b/utils/TableGen/CMakeLists.txt
@@ -25,7 +25,6 @@ add_llvm_utility(tblgen
   DAGISelMatcher.cpp
   DisassemblerEmitter.cpp
   EDEmitter.cpp
-  Error.cpp
   FastISelEmitter.cpp
   FixedLenDecoderEmitter.cpp
   InstrEnumEmitter.cpp
@@ -34,21 +33,16 @@ add_llvm_utility(tblgen
   NeonEmitter.cpp
   OptParserEmitter.cpp
   PseudoLoweringEmitter.cpp
-  Record.cpp
   RegisterInfoEmitter.cpp
   SetTheory.cpp
   StringMatcher.cpp
   SubtargetEmitter.cpp
-  TGLexer.cpp
-  TGParser.cpp
   TGValueTypes.cpp
   TableGen.cpp
-  TableGenBackend.cpp
   X86DisassemblerTables.cpp
   X86RecognizableInstr.cpp
   )
-
-target_link_libraries(tblgen LLVMSupport)
+target_link_libraries(tblgen LLVMSupport LLVMTableGen)
 if( MINGW )
   target_link_libraries(tblgen imagehlp psapi)
   if(CMAKE_SIZEOF_VOID_P MATCHES "8")
diff --git a/utils/TableGen/CallingConvEmitter.cpp b/utils/TableGen/CallingConvEmitter.cpp
index c51afd82a3..fcdaa082fb 100644
--- a/utils/TableGen/CallingConvEmitter.cpp
+++ b/utils/TableGen/CallingConvEmitter.cpp
@@ -13,8 +13,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "CallingConvEmitter.h"
-#include "Record.h"
 #include "CodeGenTarget.h"
+#include "llvm/TableGen/Record.h"
 using namespace llvm;
 
 void CallingConvEmitter::run(raw_ostream &O) {
diff --git a/utils/TableGen/CallingConvEmitter.h b/utils/TableGen/CallingConvEmitter.h
index 431c33bcc0..7bddd6c93e 100644
--- a/utils/TableGen/CallingConvEmitter.h
+++ b/utils/TableGen/CallingConvEmitter.h
@@ -15,7 +15,7 @@
 #ifndef CALLINGCONV_EMITTER_H
 #define CALLINGCONV_EMITTER_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include <cassert>
 
 namespace llvm {
diff --git a/utils/TableGen/ClangASTNodesEmitter.h b/utils/TableGen/ClangASTNodesEmitter.h
index 712333bd2d..edd9316544 100644
--- a/utils/TableGen/ClangASTNodesEmitter.h
+++ b/utils/TableGen/ClangASTNodesEmitter.h
@@ -14,8 +14,8 @@
 #ifndef CLANGAST_EMITTER_H
 #define CLANGAST_EMITTER_H
 
-#include "TableGenBackend.h"
-#include "Record.h"
+#include "llvm/TableGen/TableGenBackend.h"
+#include "llvm/TableGen/Record.h"
 #include <string>
 #include <cctype>
 #include <map>
diff --git a/utils/TableGen/ClangAttrEmitter.cpp b/utils/TableGen/ClangAttrEmitter.cpp
index 68cd87dcdc..5f25b8fa56 100644
--- a/utils/TableGen/ClangAttrEmitter.cpp
+++ b/utils/TableGen/ClangAttrEmitter.cpp
@@ -12,8 +12,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "ClangAttrEmitter.h"
-#include "Record.h"
 #include "llvm/ADT/StringSwitch.h"
+#include "llvm/TableGen/Record.h"
 #include <algorithm>
 #include <cctype>
 
diff --git a/utils/TableGen/ClangAttrEmitter.h b/utils/TableGen/ClangAttrEmitter.h
index d6c00d6e23..5acca560f0 100644
--- a/utils/TableGen/ClangAttrEmitter.h
+++ b/utils/TableGen/ClangAttrEmitter.h
@@ -14,7 +14,7 @@
 #ifndef CLANGATTR_EMITTER_H
 #define CLANGATTR_EMITTER_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 
 namespace llvm {
 
diff --git a/utils/TableGen/ClangDiagnosticsEmitter.cpp b/utils/TableGen/ClangDiagnosticsEmitter.cpp
index 130f3e1e76..da2fb70b4a 100644
--- a/utils/TableGen/ClangDiagnosticsEmitter.cpp
+++ b/utils/TableGen/ClangDiagnosticsEmitter.cpp
@@ -12,7 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "ClangDiagnosticsEmitter.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/ADT/DenseSet.h"
diff --git a/utils/TableGen/ClangDiagnosticsEmitter.h b/utils/TableGen/ClangDiagnosticsEmitter.h
index 1e4c8b70c2..73d3c4dc0e 100644
--- a/utils/TableGen/ClangDiagnosticsEmitter.h
+++ b/utils/TableGen/ClangDiagnosticsEmitter.h
@@ -14,7 +14,7 @@
 #ifndef CLANGDIAGS_EMITTER_H
 #define CLANGDIAGS_EMITTER_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 
 namespace llvm {
 
diff --git a/utils/TableGen/ClangSACheckersEmitter.cpp b/utils/TableGen/ClangSACheckersEmitter.cpp
index 97739c6b3f..423b68a648 100644
--- a/utils/TableGen/ClangSACheckersEmitter.cpp
+++ b/utils/TableGen/ClangSACheckersEmitter.cpp
@@ -12,7 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "ClangSACheckersEmitter.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/DenseSet.h"
 #include <map>
 #include <string>
diff --git a/utils/TableGen/ClangSACheckersEmitter.h b/utils/TableGen/ClangSACheckersEmitter.h
index 6bd1635473..5a0e148111 100644
--- a/utils/TableGen/ClangSACheckersEmitter.h
+++ b/utils/TableGen/ClangSACheckersEmitter.h
@@ -14,7 +14,7 @@
 #ifndef CLANGSACHECKERS_EMITTER_H
 #define CLANGSACHECKERS_EMITTER_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 
 namespace llvm {
 
diff --git a/utils/TableGen/CodeEmitterGen.cpp b/utils/TableGen/CodeEmitterGen.cpp
index 81551a7cfe..c5a152665b 100644
--- a/utils/TableGen/CodeEmitterGen.cpp
+++ b/utils/TableGen/CodeEmitterGen.cpp
@@ -15,7 +15,7 @@
 
 #include "CodeEmitterGen.h"
 #include "CodeGenTarget.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Debug.h"
diff --git a/utils/TableGen/CodeEmitterGen.h b/utils/TableGen/CodeEmitterGen.h
index a874d970fe..7f6ee2a1b4 100644
--- a/utils/TableGen/CodeEmitterGen.h
+++ b/utils/TableGen/CodeEmitterGen.h
@@ -14,7 +14,7 @@
 #ifndef CODEMITTERGEN_H
 #define CODEMITTERGEN_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include <vector>
 #include <string>
 
diff --git a/utils/TableGen/CodeGenDAGPatterns.cpp b/utils/TableGen/CodeGenDAGPatterns.cpp
index ef6634ea56..4954f33986 100644
--- a/utils/TableGen/CodeGenDAGPatterns.cpp
+++ b/utils/TableGen/CodeGenDAGPatterns.cpp
@@ -13,8 +13,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "CodeGenDAGPatterns.h"
-#include "Error.h"
-#include "Record.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/Debug.h"
diff --git a/utils/TableGen/CodeGenInstruction.cpp b/utils/TableGen/CodeGenInstruction.cpp
index 4b252774f0..53d499f395 100644
--- a/utils/TableGen/CodeGenInstruction.cpp
+++ b/utils/TableGen/CodeGenInstruction.cpp
@@ -13,8 +13,8 @@
 
 #include "CodeGenInstruction.h"
 #include "CodeGenTarget.h"
-#include "Error.h"
-#include "Record.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/STLExtras.h"
diff --git a/utils/TableGen/CodeGenRegisters.cpp b/utils/TableGen/CodeGenRegisters.cpp
index 6e98d0ca91..a5bb5c2e63 100644
--- a/utils/TableGen/CodeGenRegisters.cpp
+++ b/utils/TableGen/CodeGenRegisters.cpp
@@ -14,7 +14,7 @@
 
 #include "CodeGenRegisters.h"
 #include "CodeGenTarget.h"
-#include "Error.h"
+#include "llvm/TableGen/Error.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringExtras.h"
diff --git a/utils/TableGen/CodeGenRegisters.h b/utils/TableGen/CodeGenRegisters.h
index c3af5593c1..f5759b557d 100644
--- a/utils/TableGen/CodeGenRegisters.h
+++ b/utils/TableGen/CodeGenRegisters.h
@@ -15,8 +15,8 @@
 #ifndef CODEGEN_REGISTERS_H
 #define CODEGEN_REGISTERS_H
 
-#include "Record.h"
 #include "SetTheory.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/CodeGen/ValueTypes.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/BitVector.h"
diff --git a/utils/TableGen/CodeGenTarget.cpp b/utils/TableGen/CodeGenTarget.cpp
index e8d376d943..4a7bad7e6d 100644
--- a/utils/TableGen/CodeGenTarget.cpp
+++ b/utils/TableGen/CodeGenTarget.cpp
@@ -16,7 +16,7 @@
 
 #include "CodeGenTarget.h"
 #include "CodeGenIntrinsics.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/CommandLine.h"
diff --git a/utils/TableGen/CodeGenTarget.h b/utils/TableGen/CodeGenTarget.h
index bfd086346c..730216c331 100644
--- a/utils/TableGen/CodeGenTarget.h
+++ b/utils/TableGen/CodeGenTarget.h
@@ -19,7 +19,7 @@
 
 #include "CodeGenRegisters.h"
 #include "CodeGenInstruction.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/Support/raw_ostream.h"
 #include <algorithm>
 
diff --git a/utils/TableGen/DAGISelEmitter.cpp b/utils/TableGen/DAGISelEmitter.cpp
index d66ae96cbc..7db9003499 100644
--- a/utils/TableGen/DAGISelEmitter.cpp
+++ b/utils/TableGen/DAGISelEmitter.cpp
@@ -13,7 +13,7 @@
 
 #include "DAGISelEmitter.h"
 #include "DAGISelMatcher.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/Support/Debug.h"
 using namespace llvm;
 
diff --git a/utils/TableGen/DAGISelEmitter.h b/utils/TableGen/DAGISelEmitter.h
index 35ab550343..9c9fe4273f 100644
--- a/utils/TableGen/DAGISelEmitter.h
+++ b/utils/TableGen/DAGISelEmitter.h
@@ -14,7 +14,7 @@
 #ifndef DAGISEL_EMITTER_H
 #define DAGISEL_EMITTER_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include "CodeGenDAGPatterns.h"
 
 namespace llvm {
diff --git a/utils/TableGen/DAGISelMatcher.cpp b/utils/TableGen/DAGISelMatcher.cpp
index b12e1015c3..1367e8dd6e 100644
--- a/utils/TableGen/DAGISelMatcher.cpp
+++ b/utils/TableGen/DAGISelMatcher.cpp
@@ -10,7 +10,7 @@
 #include "DAGISelMatcher.h"
 #include "CodeGenDAGPatterns.h"
 #include "CodeGenTarget.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/ADT/StringExtras.h"
 using namespace llvm;
diff --git a/utils/TableGen/DAGISelMatcherEmitter.cpp b/utils/TableGen/DAGISelMatcherEmitter.cpp
index acb0135422..3b65b2a6de 100644
--- a/utils/TableGen/DAGISelMatcherEmitter.cpp
+++ b/utils/TableGen/DAGISelMatcherEmitter.cpp
@@ -13,7 +13,7 @@
 
 #include "DAGISelMatcher.h"
 #include "CodeGenDAGPatterns.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringMap.h"
diff --git a/utils/TableGen/DAGISelMatcherGen.cpp b/utils/TableGen/DAGISelMatcherGen.cpp
index 85a4266a70..49ad956f88 100644
--- a/utils/TableGen/DAGISelMatcherGen.cpp
+++ b/utils/TableGen/DAGISelMatcherGen.cpp
@@ -10,7 +10,7 @@
 #include "DAGISelMatcher.h"
 #include "CodeGenDAGPatterns.h"
 #include "CodeGenRegisters.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringMap.h"
diff --git a/utils/TableGen/DisassemblerEmitter.cpp b/utils/TableGen/DisassemblerEmitter.cpp
index 24db080b26..ff314e9c4f 100644
--- a/utils/TableGen/DisassemblerEmitter.cpp
+++ b/utils/TableGen/DisassemblerEmitter.cpp
@@ -9,12 +9,12 @@
 
 #include "DisassemblerEmitter.h"
 #include "CodeGenTarget.h"
-#include "Error.h"
-#include "Record.h"
 #include "X86DisassemblerTables.h"
 #include "X86RecognizableInstr.h"
 #include "ARMDecoderEmitter.h"
 #include "FixedLenDecoderEmitter.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
 
 using namespace llvm;
 using namespace llvm::X86Disassembler;
diff --git a/utils/TableGen/DisassemblerEmitter.h b/utils/TableGen/DisassemblerEmitter.h
index 7229d81649..63ee55264a 100644
--- a/utils/TableGen/DisassemblerEmitter.h
+++ b/utils/TableGen/DisassemblerEmitter.h
@@ -10,7 +10,7 @@
 #ifndef DISASSEMBLEREMITTER_H
 #define DISASSEMBLEREMITTER_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 
 namespace llvm {
 
diff --git a/utils/TableGen/EDEmitter.cpp b/utils/TableGen/EDEmitter.cpp
index e866487d25..85f7e1f26c 100644
--- a/utils/TableGen/EDEmitter.cpp
+++ b/utils/TableGen/EDEmitter.cpp
@@ -17,8 +17,8 @@
 
 #include "AsmWriterInst.h"
 #include "CodeGenTarget.h"
-#include "Record.h"
 
+#include "llvm/TableGen/Record.h"
 #include "llvm/MC/EDInstInfo.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/Format.h"
diff --git a/utils/TableGen/EDEmitter.h b/utils/TableGen/EDEmitter.h
index e30373fed2..f268375547 100644
--- a/utils/TableGen/EDEmitter.h
+++ b/utils/TableGen/EDEmitter.h
@@ -16,7 +16,7 @@
 #ifndef SEMANTIC_INFO_EMITTER_H
 #define SEMANTIC_INFO_EMITTER_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 
 namespace llvm {
   
diff --git a/utils/TableGen/FastISelEmitter.cpp b/utils/TableGen/FastISelEmitter.cpp
index 66fc9a68ba..9fdc2e33a5 100644
--- a/utils/TableGen/FastISelEmitter.cpp
+++ b/utils/TableGen/FastISelEmitter.cpp
@@ -18,8 +18,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "FastISelEmitter.h"
-#include "Error.h"
-#include "Record.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/VectorExtras.h"
 #include "llvm/Support/Debug.h"
diff --git a/utils/TableGen/FastISelEmitter.h b/utils/TableGen/FastISelEmitter.h
index ce4e77e6f8..4f75ac1fd9 100644
--- a/utils/TableGen/FastISelEmitter.h
+++ b/utils/TableGen/FastISelEmitter.h
@@ -14,8 +14,8 @@
 #ifndef FASTISEL_EMITTER_H
 #define FASTISEL_EMITTER_H
 
-#include "TableGenBackend.h"
 #include "CodeGenDAGPatterns.h"
+#include "llvm/TableGen/TableGenBackend.h"
 
 namespace llvm {
 
diff --git a/utils/TableGen/FixedLenDecoderEmitter.cpp b/utils/TableGen/FixedLenDecoderEmitter.cpp
index a3255a06e9..02b966a214 100644
--- a/utils/TableGen/FixedLenDecoderEmitter.cpp
+++ b/utils/TableGen/FixedLenDecoderEmitter.cpp
@@ -16,7 +16,7 @@
 
 #include "FixedLenDecoderEmitter.h"
 #include "CodeGenTarget.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
diff --git a/utils/TableGen/FixedLenDecoderEmitter.h b/utils/TableGen/FixedLenDecoderEmitter.h
index 7460f83c69..2df5448aa8 100644
--- a/utils/TableGen/FixedLenDecoderEmitter.h
+++ b/utils/TableGen/FixedLenDecoderEmitter.h
@@ -16,8 +16,8 @@
 #define FixedLenDECODEREMITTER_H
 
 #include "CodeGenTarget.h"
-#include "TableGenBackend.h"
 
+#include "llvm/TableGen/TableGenBackend.h"
 #include "llvm/Support/DataTypes.h"
 
 namespace llvm {
diff --git a/utils/TableGen/InstrEnumEmitter.cpp b/utils/TableGen/InstrEnumEmitter.cpp
index aa596892f5..5981afde0e 100644
--- a/utils/TableGen/InstrEnumEmitter.cpp
+++ b/utils/TableGen/InstrEnumEmitter.cpp
@@ -14,7 +14,7 @@
 
 #include "InstrEnumEmitter.h"
 #include "CodeGenTarget.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include <cstdio>
 using namespace llvm;
 
diff --git a/utils/TableGen/InstrEnumEmitter.h b/utils/TableGen/InstrEnumEmitter.h
index 89f8b659d7..c29a30938d 100644
--- a/utils/TableGen/InstrEnumEmitter.h
+++ b/utils/TableGen/InstrEnumEmitter.h
@@ -15,7 +15,7 @@
 #ifndef INSTRENUM_EMITTER_H
 #define INSTRENUM_EMITTER_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 
 namespace llvm {
 
diff --git a/utils/TableGen/InstrInfoEmitter.cpp b/utils/TableGen/InstrInfoEmitter.cpp
index 35fe728f9e..8341724a73 100644
--- a/utils/TableGen/InstrInfoEmitter.cpp
+++ b/utils/TableGen/InstrInfoEmitter.cpp
@@ -14,7 +14,7 @@
 
 #include "InstrInfoEmitter.h"
 #include "CodeGenTarget.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/StringExtras.h"
 #include <algorithm>
 using namespace llvm;
diff --git a/utils/TableGen/InstrInfoEmitter.h b/utils/TableGen/InstrInfoEmitter.h
index 165ce423ab..1461e2c5f7 100644
--- a/utils/TableGen/InstrInfoEmitter.h
+++ b/utils/TableGen/InstrInfoEmitter.h
@@ -15,8 +15,8 @@
 #ifndef INSTRINFO_EMITTER_H
 #define INSTRINFO_EMITTER_H
 
-#include "TableGenBackend.h"
 #include "CodeGenDAGPatterns.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include <vector>
 #include <map>
 
diff --git a/utils/TableGen/IntrinsicEmitter.cpp b/utils/TableGen/IntrinsicEmitter.cpp
index e5e7cea120..782b89ede2 100644
--- a/utils/TableGen/IntrinsicEmitter.cpp
+++ b/utils/TableGen/IntrinsicEmitter.cpp
@@ -13,8 +13,8 @@
 
 #include "CodeGenTarget.h"
 #include "IntrinsicEmitter.h"
-#include "Record.h"
 #include "StringMatcher.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/StringExtras.h"
 #include <algorithm>
 using namespace llvm;
diff --git a/utils/TableGen/IntrinsicEmitter.h b/utils/TableGen/IntrinsicEmitter.h
index b1efecb92e..eb6379cc74 100644
--- a/utils/TableGen/IntrinsicEmitter.h
+++ b/utils/TableGen/IntrinsicEmitter.h
@@ -15,7 +15,7 @@
 #define INTRINSIC_EMITTER_H
 
 #include "CodeGenIntrinsics.h"
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 
 namespace llvm {
   class IntrinsicEmitter : public TableGenBackend {
diff --git a/utils/TableGen/Makefile b/utils/TableGen/Makefile
index c01b6602fa..17e94eacc3 100644
--- a/utils/TableGen/Makefile
+++ b/utils/TableGen/Makefile
@@ -9,7 +9,7 @@
 
 LEVEL = ../..
 TOOLNAME = tblgen
-USEDLIBS = LLVMSupport.a
+USEDLIBS = LLVMTableGen.a LLVMSupport.a
 REQUIRES_EH := 1
 REQUIRES_RTTI := 1
 
diff --git a/utils/TableGen/NeonEmitter.cpp b/utils/TableGen/NeonEmitter.cpp
index 1e96da7f64..0b5665fdc2 100644
--- a/utils/TableGen/NeonEmitter.cpp
+++ b/utils/TableGen/NeonEmitter.cpp
@@ -24,7 +24,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "NeonEmitter.h"
-#include "Error.h"
+#include "llvm/TableGen/Error.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringExtras.h"
diff --git a/utils/TableGen/NeonEmitter.h b/utils/TableGen/NeonEmitter.h
index 12e4e86799..708ad3c06a 100644
--- a/utils/TableGen/NeonEmitter.h
+++ b/utils/TableGen/NeonEmitter.h
@@ -16,8 +16,8 @@
 #ifndef NEON_EMITTER_H
 #define NEON_EMITTER_H
 
-#include "Record.h"
-#include "TableGenBackend.h"
+#include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/StringMap.h"
 
diff --git a/utils/TableGen/OptParserEmitter.cpp b/utils/TableGen/OptParserEmitter.cpp
index 431026c669..dea22d3886 100644
--- a/utils/TableGen/OptParserEmitter.cpp
+++ b/utils/TableGen/OptParserEmitter.cpp
@@ -8,7 +8,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "OptParserEmitter.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/STLExtras.h"
 using namespace llvm;
 
diff --git a/utils/TableGen/OptParserEmitter.h b/utils/TableGen/OptParserEmitter.h
index 241a3f2b4a..ca667caf43 100644
--- a/utils/TableGen/OptParserEmitter.h
+++ b/utils/TableGen/OptParserEmitter.h
@@ -10,7 +10,7 @@
 #ifndef UTILS_TABLEGEN_OPTPARSEREMITTER_H
 #define UTILS_TABLEGEN_OPTPARSEREMITTER_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 
 namespace llvm {
   /// OptParserEmitter - This tablegen backend takes an input .td file
diff --git a/utils/TableGen/PseudoLoweringEmitter.cpp b/utils/TableGen/PseudoLoweringEmitter.cpp
index db33c1f7f6..c685527a14 100644
--- a/utils/TableGen/PseudoLoweringEmitter.cpp
+++ b/utils/TableGen/PseudoLoweringEmitter.cpp
@@ -8,10 +8,10 @@
 //===----------------------------------------------------------------------===//
 
 #define DEBUG_TYPE "pseudo-lowering"
-#include "Error.h"
 #include "CodeGenInstruction.h"
 #include "PseudoLoweringEmitter.h"
-#include "Record.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/IndexedMap.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/Support/ErrorHandling.h"
diff --git a/utils/TableGen/PseudoLoweringEmitter.h b/utils/TableGen/PseudoLoweringEmitter.h
index 2749280e6a..325bc8be14 100644
--- a/utils/TableGen/PseudoLoweringEmitter.h
+++ b/utils/TableGen/PseudoLoweringEmitter.h
@@ -12,7 +12,7 @@
 
 #include "CodeGenInstruction.h"
 #include "CodeGenTarget.h"
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include "llvm/ADT/IndexedMap.h"
 #include "llvm/ADT/SmallVector.h"
 
diff --git a/utils/TableGen/RegisterInfoEmitter.cpp b/utils/TableGen/RegisterInfoEmitter.cpp
index e5185020b7..19b45f8667 100644
--- a/utils/TableGen/RegisterInfoEmitter.cpp
+++ b/utils/TableGen/RegisterInfoEmitter.cpp
@@ -16,7 +16,7 @@
 #include "RegisterInfoEmitter.h"
 #include "CodeGenTarget.h"
 #include "CodeGenRegisters.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/BitVector.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/STLExtras.h"
diff --git a/utils/TableGen/RegisterInfoEmitter.h b/utils/TableGen/RegisterInfoEmitter.h
index 4ad9cfa97f..0fd4d079eb 100644
--- a/utils/TableGen/RegisterInfoEmitter.h
+++ b/utils/TableGen/RegisterInfoEmitter.h
@@ -16,7 +16,7 @@
 #ifndef REGISTER_INFO_EMITTER_H
 #define REGISTER_INFO_EMITTER_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include <vector>
 
 namespace llvm {
diff --git a/utils/TableGen/SetTheory.cpp b/utils/TableGen/SetTheory.cpp
index 21ac09cb66..bef73f33ef 100644
--- a/utils/TableGen/SetTheory.cpp
+++ b/utils/TableGen/SetTheory.cpp
@@ -13,8 +13,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "SetTheory.h"
-#include "Error.h"
-#include "Record.h"
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/Support/Format.h"
 
 using namespace llvm;
diff --git a/utils/TableGen/SubtargetEmitter.cpp b/utils/TableGen/SubtargetEmitter.cpp
index 978e91a1d6..103a4032b0 100644
--- a/utils/TableGen/SubtargetEmitter.cpp
+++ b/utils/TableGen/SubtargetEmitter.cpp
@@ -13,7 +13,7 @@
 
 #include "SubtargetEmitter.h"
 #include "CodeGenTarget.h"
-#include "Record.h"
+#include "llvm/TableGen/Record.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Support/Debug.h"
 #include <algorithm>
diff --git a/utils/TableGen/SubtargetEmitter.h b/utils/TableGen/SubtargetEmitter.h
index b239f3dda7..ff01274bd1 100644
--- a/utils/TableGen/SubtargetEmitter.h
+++ b/utils/TableGen/SubtargetEmitter.h
@@ -14,7 +14,7 @@
 #ifndef SUBTARGET_EMITTER_H
 #define SUBTARGET_EMITTER_H
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include "llvm/MC/MCInstrItineraries.h"
 #include <vector>
 #include <map>
diff --git a/utils/TableGen/TableGen.cpp b/utils/TableGen/TableGen.cpp
index f060711200..a1cb4272de 100644
--- a/utils/TableGen/TableGen.cpp
+++ b/utils/TableGen/TableGen.cpp
@@ -1,4 +1,4 @@
-//===- TableGen.cpp - Top-Level TableGen implementation -------------------===//
+//===- TableGen.cpp - Top-Level TableGen implementation for LLVM ----------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -7,11 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// TableGen is a tool which can be used to build up a description of something,
-// then invoke one or more "tablegen backends" to emit information about the
-// description in some predefined format.  In practice, this is used by the LLVM
-// code generators to automate generation of a code generator through a
-// high-level description of the target.
+// This file contains the main function for LLVM's TableGen.
 //
 //===----------------------------------------------------------------------===//
 
@@ -26,28 +22,25 @@
 #include "DAGISelEmitter.h"
 #include "DisassemblerEmitter.h"
 #include "EDEmitter.h"
-#include "Error.h"
 #include "FastISelEmitter.h"
 #include "InstrInfoEmitter.h"
 #include "IntrinsicEmitter.h"
 #include "NeonEmitter.h"
 #include "OptParserEmitter.h"
 #include "PseudoLoweringEmitter.h"
-#include "Record.h"
 #include "RegisterInfoEmitter.h"
 #include "ARMDecoderEmitter.h"
 #include "SubtargetEmitter.h"
 #include "SetTheory.h"
-#include "TGParser.h"
-#include "llvm/ADT/OwningPtr.h"
+
 #include "llvm/Support/CommandLine.h"
-#include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/Support/ToolOutputFile.h"
 #include "llvm/Support/Signals.h"
-#include "llvm/Support/system_error.h"
-#include <algorithm>
-#include <cstdio>
+#include "llvm/TableGen/Error.h"
+#include "llvm/TableGen/Main.h"
+#include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/TableGenAction.h"
+
 using namespace llvm;
 
 enum ActionType {
@@ -173,196 +166,124 @@ namespace {
         cl::value_desc("class name"));
 
   cl::opt<std::string>
-  OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
-                 cl::init("-"));
-
-  cl::opt<std::string>
-  DependFilename("d", cl::desc("Dependency filename"), cl::value_desc("filename"),
-                 cl::init(""));
-
-  cl::opt<std::string>
-  InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
-
-  cl::list<std::string>
-  IncludeDirs("I", cl::desc("Directory of include files"),
-              cl::value_desc("directory"), cl::Prefix);
-
-  cl::opt<std::string>
   ClangComponent("clang-component",
                  cl::desc("Only use warnings from specified component"),
                  cl::value_desc("component"), cl::Hidden);
 }
 
-
-int main(int argc, char **argv) {
-  RecordKeeper Records;
-
-  sys::PrintStackTraceOnErrorSignal();
-  PrettyStackTraceProgram X(argc, argv);
-  cl::ParseCommandLineOptions(argc, argv);
-
-
-  try {
-    // Parse the input file.
-    OwningPtr<MemoryBuffer> File;
-    if (error_code ec = MemoryBuffer::getFileOrSTDIN(InputFilename.c_str(), File)) {
-      errs() << "Could not open input file '" << InputFilename << "': "
-             << ec.message() <<"\n";
-      return 1;
-    }
-    MemoryBuffer *F = File.take();
-
-    // Tell SrcMgr about this buffer, which is what TGParser will pick up.
-    SrcMgr.AddNewSourceBuffer(F, SMLoc());
-
-    // Record the location of the include directory so that the lexer can find
-    // it later.
-    SrcMgr.setIncludeDirs(IncludeDirs);
-
-    TGParser Parser(SrcMgr, Records);
-
-    if (Parser.ParseFile())
-      return 1;
-
-    std::string Error;
-    tool_output_file Out(OutputFilename.c_str(), Error);
-    if (!Error.empty()) {
-      errs() << argv[0] << ": error opening " << OutputFilename
-        << ":" << Error << "\n";
-      return 1;
-    }
-    if (!DependFilename.empty()) {
-      if (OutputFilename == "-") {
-        errs() << argv[0] << ": the option -d must be used together with -o\n";
-        return 1;
-      }
-      tool_output_file DepOut(DependFilename.c_str(), Error);
-      if (!Error.empty()) {
-        errs() << argv[0] << ": error opening " << DependFilename
-          << ":" << Error << "\n";
-        return 1;
-      }
-      DepOut.os() << OutputFilename << ":";
-      const std::vector<std::string> &Dependencies = Parser.getDependencies();
-      for (std::vector<std::string>::const_iterator I = Dependencies.begin(),
-                                                          E = Dependencies.end();
-           I != E; ++I) {
-        DepOut.os() << " " << (*I);
-      }
-      DepOut.os() << "\n";
-      DepOut.keep();
-    }
-
+class LLVMTableGenAction : public TableGenAction {
+public:
+  bool operator()(raw_ostream &OS, RecordKeeper &Records) {
     switch (Action) {
     case PrintRecords:
-      Out.os() << Records;           // No argument, dump all contents
+      OS << Records;           // No argument, dump all contents
       break;
     case GenEmitter:
-      CodeEmitterGen(Records).run(Out.os());
+      CodeEmitterGen(Records).run(OS);
       break;
     case GenRegisterInfo:
-      RegisterInfoEmitter(Records).run(Out.os());
+      RegisterInfoEmitter(Records).run(OS);
       break;
     case GenInstrInfo:
-      InstrInfoEmitter(Records).run(Out.os());
+      InstrInfoEmitter(Records).run(OS);
       break;
     case GenCallingConv:
-      CallingConvEmitter(Records).run(Out.os());
+      CallingConvEmitter(Records).run(OS);
       break;
     case GenAsmWriter:
-      AsmWriterEmitter(Records).run(Out.os());
+      AsmWriterEmitter(Records).run(OS);
       break;
     case GenARMDecoder:
-      ARMDecoderEmitter(Records).run(Out.os());
+      ARMDecoderEmitter(Records).run(OS);
       break;
     case GenAsmMatcher:
-      AsmMatcherEmitter(Records).run(Out.os());
+      AsmMatcherEmitter(Records).run(OS);
       break;
     case GenClangAttrClasses:
-      ClangAttrClassEmitter(Records).run(Out.os());
+      ClangAttrClassEmitter(Records).run(OS);
       break;
     case GenClangAttrImpl:
-      ClangAttrImplEmitter(Records).run(Out.os());
+      ClangAttrImplEmitter(Records).run(OS);
       break;
     case GenClangAttrList:
-      ClangAttrListEmitter(Records).run(Out.os());
+      ClangAttrListEmitter(Records).run(OS);
       break;
     case GenClangAttrPCHRead:
-      ClangAttrPCHReadEmitter(Records).run(Out.os());
+      ClangAttrPCHReadEmitter(Records).run(OS);
       break;
     case GenClangAttrPCHWrite:
-      ClangAttrPCHWriteEmitter(Records).run(Out.os());
+      ClangAttrPCHWriteEmitter(Records).run(OS);
       break;
     case GenClangAttrSpellingList:
-      ClangAttrSpellingListEmitter(Records).run(Out.os());
+      ClangAttrSpellingListEmitter(Records).run(OS);
       break;
     case GenClangAttrLateParsedList:
-      ClangAttrLateParsedListEmitter(Records).run(Out.os());
+      ClangAttrLateParsedListEmitter(Records).run(OS);
       break;
     case GenClangDiagsDefs:
-      ClangDiagsDefsEmitter(Records, ClangComponent).run(Out.os());
+      ClangDiagsDefsEmitter(Records, ClangComponent).run(OS);
       break;
     case GenClangDiagGroups:
-      ClangDiagGroupsEmitter(Records).run(Out.os());
+      ClangDiagGroupsEmitter(Records).run(OS);
       break;
     case GenClangDiagsIndexName:
-      ClangDiagsIndexNameEmitter(Records).run(Out.os());
+      ClangDiagsIndexNameEmitter(Records).run(OS);
       break;
     case GenClangDeclNodes:
-      ClangASTNodesEmitter(Records, "Decl", "Decl").run(Out.os());
-      ClangDeclContextEmitter(Records).run(Out.os());
+      ClangASTNodesEmitter(Records, "Decl", "Decl").run(OS);
+      ClangDeclContextEmitter(Records).run(OS);
       break;
     case GenClangStmtNodes:
-      ClangASTNodesEmitter(Records, "Stmt", "").run(Out.os());
+      ClangASTNodesEmitter(Records, "Stmt", "").run(OS);
       break;
     case GenClangSACheckers:
-      ClangSACheckersEmitter(Records).run(Out.os());
+      ClangSACheckersEmitter(Records).run(OS);
       break;
     case GenDisassembler:
-      DisassemblerEmitter(Records).run(Out.os());
+      DisassemblerEmitter(Records).run(OS);
       break;
     case GenPseudoLowering:
-      PseudoLoweringEmitter(Records).run(Out.os());
+      PseudoLoweringEmitter(Records).run(OS);
       break;
     case GenOptParserDefs:
-      OptParserEmitter(Records, true).run(Out.os());
+      OptParserEmitter(Records, true).run(OS);
       break;
     case GenOptParserImpl:
-      OptParserEmitter(Records, false).run(Out.os());
+      OptParserEmitter(Records, false).run(OS);
       break;
     case GenDAGISel:
-      DAGISelEmitter(Records).run(Out.os());
+      DAGISelEmitter(Records).run(OS);
       break;
     case GenFastISel:
-      FastISelEmitter(Records).run(Out.os());
+      FastISelEmitter(Records).run(OS);
       break;
     case GenSubtarget:
-      SubtargetEmitter(Records).run(Out.os());
+      SubtargetEmitter(Records).run(OS);
       break;
     case GenIntrinsic:
-      IntrinsicEmitter(Records).run(Out.os());
+      IntrinsicEmitter(Records).run(OS);
       break;
     case GenTgtIntrinsic:
-      IntrinsicEmitter(Records, true).run(Out.os());
+      IntrinsicEmitter(Records, true).run(OS);
       break;
     case GenEDInfo:
-      EDEmitter(Records).run(Out.os());
+      EDEmitter(Records).run(OS);
       break;
     case GenArmNeon:
-      NeonEmitter(Records).run(Out.os());
+      NeonEmitter(Records).run(OS);
       break;
     case GenArmNeonSema:
-      NeonEmitter(Records).runHeader(Out.os());
+      NeonEmitter(Records).runHeader(OS);
       break;
     case GenArmNeonTest:
-      NeonEmitter(Records).runTests(Out.os());
+      NeonEmitter(Records).runTests(OS);
       break;
     case PrintEnums:
     {
       std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
       for (unsigned i = 0, e = Recs.size(); i != e; ++i)
-        Out.os() << Recs[i]->getName() << ", ";
-      Out.os() << "\n";
+        OS << Recs[i]->getName() << ", ";
+      OS << "\n";
       break;
     }
     case PrintSets:
@@ -371,33 +292,29 @@ int main(int argc, char **argv) {
       Sets.addFieldExpander("Set", "Elements");
       std::vector<Record*> Recs = Records.getAllDerivedDefinitions("Set");
       for (unsigned i = 0, e = Recs.size(); i != e; ++i) {
-        Out.os() << Recs[i]->getName() << " = [";
+        OS << Recs[i]->getName() << " = [";
         const std::vector<Record*> *Elts = Sets.expand(Recs[i]);
         assert(Elts && "Couldn't expand Set instance");
         for (unsigned ei = 0, ee = Elts->size(); ei != ee; ++ei)
-          Out.os() << ' ' << (*Elts)[ei]->getName();
-        Out.os() << " ]\n";
+          OS << ' ' << (*Elts)[ei]->getName();
+        OS << " ]\n";
       }
       break;
     }
     default:
       assert(1 && "Invalid Action");
-      return 1;
+      return true;
     }
 
-    // Declare success.
-    Out.keep();
-    return 0;
-
-  } catch (const TGError &Error) {
-    PrintError(Error);
-  } catch (const std::string &Error) {
-    PrintError(Error);
-  } catch (const char *Error) {
-    PrintError(Error);
-  } catch (...) {
-    errs() << argv[0] << ": Unknown unexpected exception occurred.\n";
+    return false;
   }
+};
+
+int main(int argc, char **argv) {
+  sys::PrintStackTraceOnErrorSignal();
+  PrettyStackTraceProgram X(argc, argv);
+  cl::ParseCommandLineOptions(argc, argv);
 
-  return 1;
+  LLVMTableGenAction Action;
+  return TableGenMain(argv[0], Action);
 }
diff --git a/utils/TableGen/X86DisassemblerTables.cpp b/utils/TableGen/X86DisassemblerTables.cpp
index b12660eea2..e7b608306c 100644
--- a/utils/TableGen/X86DisassemblerTables.cpp
+++ b/utils/TableGen/X86DisassemblerTables.cpp
@@ -17,7 +17,7 @@
 #include "X86DisassemblerShared.h"
 #include "X86DisassemblerTables.h"
 
-#include "TableGenBackend.h"
+#include "llvm/TableGen/TableGenBackend.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/Format.h"
diff --git a/utils/TableGen/X86RecognizableInstr.h b/utils/TableGen/X86RecognizableInstr.h
index 390b89e032..0b600df872 100644
--- a/utils/TableGen/X86RecognizableInstr.h
+++ b/utils/TableGen/X86RecognizableInstr.h
@@ -20,8 +20,8 @@
 #include "X86DisassemblerTables.h"
 
 #include "CodeGenTarget.h"
-#include "Record.h"
 
+#include "llvm/TableGen/Record.h"
 #include "llvm/Support/DataTypes.h"
 #include "llvm/ADT/SmallVector.h"