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diff --git a/lib/CodeGen/PBQP/Solution.h b/lib/CodeGen/PBQP/Solution.h
deleted file mode 100644
index 047fd04c7cb8..000000000000
--- a/lib/CodeGen/PBQP/Solution.h
+++ /dev/null
@@ -1,89 +0,0 @@
-//===-- Solution.h ------- PBQP Solution ------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// PBQP Solution class.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CODEGEN_PBQP_SOLUTION_H
-#define LLVM_CODEGEN_PBQP_SOLUTION_H
-
-#include "Math.h"
-#include "Graph.h"
-
-#include <map>
-
-namespace PBQP {
-
-  /// \brief Represents a solution to a PBQP problem.
-  ///
-  /// To get the selection for each node in the problem use the getSelection method.
-  class Solution {
-  private:
-
-    typedef std::map<Graph::NodeItr, unsigned, NodeItrComparator> SelectionsMap;
-    SelectionsMap selections;
-
-    unsigned r0Reductions, r1Reductions, r2Reductions, rNReductions;
-
-  public:
-
-    /// \brief Number of nodes for which selections have been made.
-    /// @return Number of nodes for which selections have been made.
-    unsigned numNodes() const { return selections.size(); }
-
-    /// \brief Records a reduction via the R0 rule. Should be called from the
-    ///        solver only.
-    void recordR0() { ++r0Reductions; }
-
-    /// \brief Returns the number of R0 reductions applied to solve the problem.
-    unsigned numR0Reductions() const { return r0Reductions; }
-
-    /// \brief Records a reduction via the R1 rule. Should be called from the
-    ///        solver only.
-    void recordR1() { ++r1Reductions; }
-
-    /// \brief Returns the number of R1 reductions applied to solve the problem.
-    unsigned numR1Reductions() const { return r1Reductions; }
-
-    /// \brief Records a reduction via the R2 rule. Should be called from the
-    ///        solver only.
-    void recordR2() { ++r2Reductions; }
-
-    /// \brief Returns the number of R2 reductions applied to solve the problem.
-    unsigned numR2Reductions() const { return r2Reductions; }
-
-    /// \brief Records a reduction via the RN rule. Should be called from the
-    ///        solver only.
-    void recordRN() { ++ rNReductions; }
-
-    /// \brief Returns the number of RN reductions applied to solve the problem.
-    unsigned numRNReductions() const { return rNReductions; }
-
-    /// \brief Set the selection for a given node.
-    /// @param nItr Node iterator.
-    /// @param selection Selection for nItr.
-    void setSelection(Graph::NodeItr nItr, unsigned selection) {
-      selections[nItr] = selection;
-    }
-
-    /// \brief Get a node's selection.
-    /// @param nItr Node iterator.
-    /// @return The selection for nItr;
-    unsigned getSelection(Graph::NodeItr nItr) const {
-      SelectionsMap::const_iterator sItr = selections.find(nItr);
-      assert(sItr != selections.end() && "No selection for node.");
-      return sItr->second;
-    }
-
-  };
-
-}
-
-#endif // LLVM_CODEGEN_PBQP_SOLUTION_H