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diff --git a/contrib/llvm/include/llvm/Analysis/CodeMetrics.h b/contrib/llvm/include/llvm/Analysis/CodeMetrics.h
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+//===- CodeMetrics.h - Code cost measurements -------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements various weight measurements for code, helping
+// the Inliner and other passes decide whether to duplicate its contents.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ANALYSIS_CODEMETRICS_H
+#define LLVM_ANALYSIS_CODEMETRICS_H
+
+#include "llvm/ADT/DenseMap.h"
+
+namespace llvm {
+  class BasicBlock;
+  class Function;
+  class Instruction;
+  class TargetData;
+  class Value;
+
+  /// \brief Check whether an instruction is likely to be "free" when lowered.
+  bool isInstructionFree(const Instruction *I, const TargetData *TD = 0);
+
+  /// \brief Check whether a call will lower to something small.
+  ///
+  /// This tests checks whether calls to this function will lower to something
+  /// significantly cheaper than a traditional call, often a single
+  /// instruction.
+  bool callIsSmall(const Function *F);
+
+  /// \brief Utility to calculate the size and a few similar metrics for a set
+  /// of basic blocks.
+  struct CodeMetrics {
+    /// \brief True if this function contains a call to setjmp or other functions
+    /// with attribute "returns twice" without having the attribute itself.
+    bool exposesReturnsTwice;
+
+    /// \brief True if this function calls itself.
+    bool isRecursive;
+
+    /// \brief True if this function contains one or more indirect branches.
+    bool containsIndirectBr;
+
+    /// \brief True if this function calls alloca (in the C sense).
+    bool usesDynamicAlloca;
+
+    /// \brief Number of instructions in the analyzed blocks.
+    unsigned NumInsts;
+
+    /// \brief Number of analyzed blocks.
+    unsigned NumBlocks;
+
+    /// \brief Keeps track of basic block code size estimates.
+    DenseMap<const BasicBlock *, unsigned> NumBBInsts;
+
+    /// \brief Keep track of the number of calls to 'big' functions.
+    unsigned NumCalls;
+
+    /// \brief The number of calls to internal functions with a single caller.
+    ///
+    /// These are likely targets for future inlining, likely exposed by
+    /// interleaved devirtualization.
+    unsigned NumInlineCandidates;
+
+    /// \brief How many instructions produce vector values.
+    ///
+    /// The inliner is more aggressive with inlining vector kernels.
+    unsigned NumVectorInsts;
+
+    /// \brief How many 'ret' instructions the blocks contain.
+    unsigned NumRets;
+
+    CodeMetrics() : exposesReturnsTwice(false), isRecursive(false),
+                    containsIndirectBr(false), usesDynamicAlloca(false),
+                    NumInsts(0), NumBlocks(0), NumCalls(0),
+                    NumInlineCandidates(0), NumVectorInsts(0),
+                    NumRets(0) {}
+
+    /// \brief Add information about a block to the current state.
+    void analyzeBasicBlock(const BasicBlock *BB, const TargetData *TD = 0);
+
+    /// \brief Add information about a function to the current state.
+    void analyzeFunction(Function *F, const TargetData *TD = 0);
+  };
+}
+
+#endif