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diff --git a/include/llvm/MC/MCTargetAsmParser.h b/include/llvm/MC/MCTargetAsmParser.h
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+++ b/include/llvm/MC/MCTargetAsmParser.h
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+//===-- llvm/MC/MCTargetAsmParser.h - Target Assembly Parser ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_MC_TARGETPARSER_H
+#define LLVM_MC_TARGETPARSER_H
+
+#include "llvm/MC/MCParser/MCAsmParserExtension.h"
+
+namespace llvm {
+class MCStreamer;
+class StringRef;
+class SMLoc;
+class AsmToken;
+class MCParsedAsmOperand;
+template <typename T> class SmallVectorImpl;
+
+/// MCTargetAsmParser - Generic interface to target specific assembly parsers.
+class MCTargetAsmParser : public MCAsmParserExtension {
+  MCTargetAsmParser(const MCTargetAsmParser &);   // DO NOT IMPLEMENT
+  void operator=(const MCTargetAsmParser &);  // DO NOT IMPLEMENT
+protected: // Can only create subclasses.
+  MCTargetAsmParser();
+ 
+  /// AvailableFeatures - The current set of available features.
+  unsigned AvailableFeatures;
+
+public:
+  virtual ~MCTargetAsmParser();
+
+  unsigned getAvailableFeatures() const { return AvailableFeatures; }
+  void setAvailableFeatures(unsigned Value) { AvailableFeatures = Value; }
+
+  virtual bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc,
+                             SMLoc &EndLoc) = 0;
+
+  /// ParseInstruction - Parse one assembly instruction.
+  ///
+  /// The parser is positioned following the instruction name. The target
+  /// specific instruction parser should parse the entire instruction and
+  /// construct the appropriate MCInst, or emit an error. On success, the entire
+  /// line should be parsed up to and including the end-of-statement token. On
+  /// failure, the parser is not required to read to the end of the line.
+  //
+  /// \param Name - The instruction name.
+  /// \param NameLoc - The source location of the name.
+  /// \param Operands [out] - The list of parsed operands, this returns
+  ///        ownership of them to the caller.
+  /// \return True on failure.
+  virtual bool ParseInstruction(StringRef Name, SMLoc NameLoc,
+                            SmallVectorImpl<MCParsedAsmOperand*> &Operands) = 0;
+
+  /// ParseDirective - Parse a target specific assembler directive
+  ///
+  /// The parser is positioned following the directive name.  The target
+  /// specific directive parser should parse the entire directive doing or
+  /// recording any target specific work, or return true and do nothing if the
+  /// directive is not target specific. If the directive is specific for
+  /// the target, the entire line is parsed up to and including the
+  /// end-of-statement token and false is returned.
+  ///
+  /// \param DirectiveID - the identifier token of the directive.
+  virtual bool ParseDirective(AsmToken DirectiveID) = 0;
+  
+  /// MatchAndEmitInstruction - Recognize a series of operands of a parsed
+  /// instruction as an actual MCInst and emit it to the specified MCStreamer.
+  /// This returns false on success and returns true on failure to match.
+  ///
+  /// On failure, the target parser is responsible for emitting a diagnostic
+  /// explaining the match failure.
+  virtual bool 
+  MatchAndEmitInstruction(SMLoc IDLoc,
+                          SmallVectorImpl<MCParsedAsmOperand*> &Operands,
+                          MCStreamer &Out) = 0;
+  
+};
+
+} // End llvm namespace
+
+#endif