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diff --git a/utils/TableGen/CodeGenTarget.h b/utils/TableGen/CodeGenTarget.h
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+//===- CodeGenTarget.h - Target Class Wrapper -------------------*- 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 wrappers for the Target class and related global
+// functionality.  This makes it easier to access the data and provides a single
+// place that needs to check it for validity.  All of these classes throw
+// exceptions on error conditions.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CODEGEN_TARGET_H
+#define CODEGEN_TARGET_H
+
+#include "CodeGenRegisters.h"
+#include "CodeGenInstruction.h"
+#include <algorithm>
+#include <iosfwd>
+#include <map>
+
+namespace llvm {
+
+class Record;
+class RecordKeeper;
+struct CodeGenRegister;
+class CodeGenTarget;
+
+// SelectionDAG node properties.
+//  SDNPMemOperand: indicates that a node touches memory and therefore must
+//                  have an associated memory operand that describes the access.
+enum SDNP {
+  SDNPCommutative, 
+  SDNPAssociative, 
+  SDNPHasChain,
+  SDNPOutFlag,
+  SDNPInFlag,
+  SDNPOptInFlag,
+  SDNPMayLoad,
+  SDNPMayStore,
+  SDNPSideEffect,
+  SDNPMemOperand
+};
+
+// ComplexPattern attributes.
+enum CPAttr { CPAttrParentAsRoot };
+
+/// getValueType - Return the MVT::SimpleValueType that the specified TableGen
+/// record corresponds to.
+MVT::SimpleValueType getValueType(Record *Rec);
+
+std::string getName(MVT::SimpleValueType T);
+std::string getEnumName(MVT::SimpleValueType T);
+
+/// getQualifiedName - Return the name of the specified record, with a
+/// namespace qualifier if the record contains one.
+std::string getQualifiedName(const Record *R);
+  
+/// CodeGenTarget - This class corresponds to the Target class in the .td files.
+///
+class CodeGenTarget {
+  Record *TargetRec;
+
+  mutable std::map<std::string, CodeGenInstruction> Instructions;
+  mutable std::vector<CodeGenRegister> Registers;
+  mutable std::vector<CodeGenRegisterClass> RegisterClasses;
+  mutable std::vector<MVT::SimpleValueType> LegalValueTypes;
+  void ReadRegisters() const;
+  void ReadRegisterClasses() const;
+  void ReadInstructions() const;
+  void ReadLegalValueTypes() const;
+public:
+  CodeGenTarget();
+
+  Record *getTargetRecord() const { return TargetRec; }
+  const std::string &getName() const;
+
+  /// getInstNamespace - Return the target-specific instruction namespace.
+  ///
+  std::string getInstNamespace() const;
+
+  /// getInstructionSet - Return the InstructionSet object.
+  ///
+  Record *getInstructionSet() const;
+
+  /// getAsmWriter - Return the AssemblyWriter definition for this target.
+  ///
+  Record *getAsmWriter() const;
+
+  const std::vector<CodeGenRegister> &getRegisters() const {
+    if (Registers.empty()) ReadRegisters();
+    return Registers;
+  }
+
+  const std::vector<CodeGenRegisterClass> &getRegisterClasses() const {
+    if (RegisterClasses.empty()) ReadRegisterClasses();
+    return RegisterClasses;
+  }
+  
+  const CodeGenRegisterClass &getRegisterClass(Record *R) const {
+    const std::vector<CodeGenRegisterClass> &RC = getRegisterClasses();
+    for (unsigned i = 0, e = RC.size(); i != e; ++i)
+      if (RC[i].TheDef == R)
+        return RC[i];
+    assert(0 && "Didn't find the register class");
+    abort();
+  }
+  
+  /// getRegisterClassForRegister - Find the register class that contains the
+  /// specified physical register.  If the register is not in a register
+  /// class, return null. If the register is in multiple classes, and the
+  /// classes have a superset-subset relationship and the same set of
+  /// types, return the superclass.  Otherwise return null.
+  const CodeGenRegisterClass *getRegisterClassForRegister(Record *R) const {
+    const std::vector<CodeGenRegisterClass> &RCs = getRegisterClasses();
+    const CodeGenRegisterClass *FoundRC = 0;
+    for (unsigned i = 0, e = RCs.size(); i != e; ++i) {
+      const CodeGenRegisterClass &RC = RegisterClasses[i];
+      for (unsigned ei = 0, ee = RC.Elements.size(); ei != ee; ++ei) {
+        if (R != RC.Elements[ei])
+          continue;
+
+        // If a register's classes have different types, return null.
+        if (FoundRC && RC.getValueTypes() != FoundRC->getValueTypes())
+          return 0;
+
+        // If this is the first class that contains the register,
+        // make a note of it and go on to the next class.
+        if (!FoundRC) {
+          FoundRC = &RC;
+          break;
+        }
+
+        std::vector<Record *> Elements(RC.Elements);
+        std::vector<Record *> FoundElements(FoundRC->Elements);
+        std::sort(Elements.begin(), Elements.end());
+        std::sort(FoundElements.begin(), FoundElements.end());
+
+        // Check to see if the previously found class that contains
+        // the register is a subclass of the current class. If so,
+        // prefer the superclass.
+        if (std::includes(Elements.begin(), Elements.end(),
+                          FoundElements.begin(), FoundElements.end())) {
+          FoundRC = &RC;
+          break;
+        }
+
+        // Check to see if the previously found class that contains
+        // the register is a superclass of the current class. If so,
+        // prefer the superclass.
+        if (std::includes(FoundElements.begin(), FoundElements.end(),
+                          Elements.begin(), Elements.end()))
+          break;
+
+        // Multiple classes, and neither is a superclass of the other.
+        // Return null.
+        return 0;
+      }
+    }
+    return FoundRC;
+  }
+
+  /// getRegisterVTs - Find the union of all possible SimpleValueTypes for the
+  /// specified physical register.
+  std::vector<unsigned char> getRegisterVTs(Record *R) const;
+  
+  const std::vector<MVT::SimpleValueType> &getLegalValueTypes() const {
+    if (LegalValueTypes.empty()) ReadLegalValueTypes();
+    return LegalValueTypes;
+  }
+  
+  /// isLegalValueType - Return true if the specified value type is natively
+  /// supported by the target (i.e. there are registers that directly hold it).
+  bool isLegalValueType(MVT::SimpleValueType VT) const {
+    const std::vector<MVT::SimpleValueType> &LegalVTs = getLegalValueTypes();
+    for (unsigned i = 0, e = LegalVTs.size(); i != e; ++i)
+      if (LegalVTs[i] == VT) return true;
+    return false;    
+  }
+
+  /// getInstructions - Return all of the instructions defined for this target.
+  ///
+  const std::map<std::string, CodeGenInstruction> &getInstructions() const {
+    if (Instructions.empty()) ReadInstructions();
+    return Instructions;
+  }
+  std::map<std::string, CodeGenInstruction> &getInstructions() {
+    if (Instructions.empty()) ReadInstructions();
+    return Instructions;
+  }
+
+  CodeGenInstruction &getInstruction(const std::string &Name) const {
+    const std::map<std::string, CodeGenInstruction> &Insts = getInstructions();
+    assert(Insts.count(Name) && "Not an instruction!");
+    return const_cast<CodeGenInstruction&>(Insts.find(Name)->second);
+  }
+
+  typedef std::map<std::string,
+                   CodeGenInstruction>::const_iterator inst_iterator;
+  inst_iterator inst_begin() const { return getInstructions().begin(); }
+  inst_iterator inst_end() const { return Instructions.end(); }
+
+  /// getInstructionsByEnumValue - Return all of the instructions defined by the
+  /// target, ordered by their enum value.
+  void getInstructionsByEnumValue(std::vector<const CodeGenInstruction*>
+                                                &NumberedInstructions);
+
+
+  /// isLittleEndianEncoding - are instruction bit patterns defined as  [0..n]?
+  ///
+  bool isLittleEndianEncoding() const;
+};
+
+/// ComplexPattern - ComplexPattern info, corresponding to the ComplexPattern
+/// tablegen class in TargetSelectionDAG.td
+class ComplexPattern {
+  MVT::SimpleValueType Ty;
+  unsigned NumOperands;
+  std::string SelectFunc;
+  std::vector<Record*> RootNodes;
+  unsigned Properties; // Node properties
+  unsigned Attributes; // Pattern attributes
+public:
+  ComplexPattern() : NumOperands(0) {};
+  ComplexPattern(Record *R);
+
+  MVT::SimpleValueType getValueType() const { return Ty; }
+  unsigned getNumOperands() const { return NumOperands; }
+  const std::string &getSelectFunc() const { return SelectFunc; }
+  const std::vector<Record*> &getRootNodes() const {
+    return RootNodes;
+  }
+  bool hasProperty(enum SDNP Prop) const { return Properties & (1 << Prop); }
+  bool hasAttribute(enum CPAttr Attr) const { return Attributes & (1 << Attr); }
+};
+
+} // End llvm namespace
+
+#endif