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diff --git a/include/llvm/IR/Writer.h b/include/llvm/IR/Writer.h
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+//===-- Writer.h - Printer for LLVM IR assembly files -------------*- C++ -*-=//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This functionality is implemented by lib/IR/AsmWriter.cpp.
+// This library is used to print LLVM assembly language files to an iostream. It
+// can print LLVM code at a variety of granularities, including Modules,
+// BasicBlocks, and Instructions. This makes it useful for debugging.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_IR_WRITER_H
+#define LLVM_IR_WRITER_H
+
+namespace llvm {
+
+class Module;
+class Value;
+class raw_ostream;
+
+// WriteAsOperand - Write the name of the specified value out to the specified
+// ostream. This can be useful when you just want to print int %reg126, not the
+// whole instruction that generated it. If you specify a Module for context,
+// then even constants get pretty-printed; for example, the type of a null
+// pointer is printed symbolically.
+//
+void WriteAsOperand(raw_ostream &, const Value *, bool PrintTy = true,
+ const Module *Context = 0);
+
+} // End llvm namespace
+
+#endif