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diff --git a/include/llvm/CodeGen/MachineConstantPool.h b/include/llvm/CodeGen/MachineConstantPool.h
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+++ b/include/llvm/CodeGen/MachineConstantPool.h
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+//===-- CodeGen/MachineConstantPool.h - Abstract Constant Pool --*- C++ -*-===//
+// 
+// The MachineConstantPool class keeps track of constants referenced by a
+// function which must be spilled to memory.  This is used for constants which
+// are unable to be used directly as operands to instructions, which typically
+// include floating point and large integer constants.
+//
+// Instructions reference the address of these constant pool constants through
+// the use of MO_ConstantPoolIndex values.  When emitting assembly or machine
+// code, these virtual address references are converted to refer to the
+// address of the function constant pool values.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_MACHINECONSTANTPOOL_H
+#define LLVM_CODEGEN_MACHINECONSTANTPOOL_H
+
+#include <vector>
+class Constant;
+
+class MachineConstantPool {
+  std::vector<Constant*> Constants;
+public:
+
+  /// getConstantPoolIndex - Create a new entry in the constant pool or return
+  /// an existing one.  This should eventually allow sharing of duplicate
+  /// objects in the constant pool, but this is adequate for now.
+  ///
+  unsigned getConstantPoolIndex(Constant *C) {
+    Constants.push_back(C);
+    return Constants.size()-1;
+  }
+
+  const std::vector<Constant*> &getConstants() const { return Constants; }
+
+  /// print - Used by the MachineFunction printer to print information about
+  /// stack objects.  Implemented in MachineFunction.cpp
+  ///
+  void print(std::ostream &OS) const;
+
+  /// dump - Call print(std::cerr) to be called from the debugger.
+  void dump() const;
+};
+
+#endif