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diff --git a/include/llvm/MC/MCCodeEmitter.h b/include/llvm/MC/MCCodeEmitter.h
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+++ b/include/llvm/MC/MCCodeEmitter.h
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+//===-- llvm/MC/MCCodeEmitter.h - Instruction Encoding ----------*- 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_MCCODEEMITTER_H
+#define LLVM_MC_MCCODEEMITTER_H
+
+namespace llvm {
+class MCInst;
+class raw_ostream;
+
+/// MCCodeEmitter - Generic instruction encoding interface.
+class MCCodeEmitter {
+ MCCodeEmitter(const MCCodeEmitter &); // DO NOT IMPLEMENT
+ void operator=(const MCCodeEmitter &); // DO NOT IMPLEMENT
+protected: // Can only create subclasses.
+ MCCodeEmitter();
+
+public:
+ virtual ~MCCodeEmitter();
+
+ /// EncodeInstruction - Encode the given \arg Inst to bytes on the output
+ /// stream \arg OS.
+ virtual void EncodeInstruction(const MCInst &Inst, raw_ostream &OS) const = 0;
+};
+
+} // End llvm namespace
+
+#endif
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