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diff --git a/include/llvm/Transforms/Vectorize.h b/include/llvm/Transforms/Vectorize.h
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+//===-- Vectorize.h - Vectorization Transformations -------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This header file defines prototypes for accessor functions that expose passes
+// in the Vectorize transformations library.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_VECTORIZE_H
+#define LLVM_TRANSFORMS_VECTORIZE_H
+
+namespace llvm {
+class BasicBlock;
+class BasicBlockPass;
+
+//===----------------------------------------------------------------------===//
+/// @brief Vectorize configuration.
+struct VectorizeConfig {
+  //===--------------------------------------------------------------------===//
+  // Target architecture related parameters
+
+  /// @brief The size of the native vector registers.
+  unsigned VectorBits;
+
+  /// @brief Vectorize integer values.
+  bool VectorizeInts;
+
+  /// @brief Vectorize floating-point values.
+  bool VectorizeFloats;
+
+  /// @brief Vectorize casting (conversion) operations.
+  bool VectorizeCasts;
+
+  /// @brief Vectorize floating-point math intrinsics.
+  bool VectorizeMath;
+
+  /// @brief Vectorize the fused-multiply-add intrinsic.
+  bool VectorizeFMA;
+
+  /// @brief Vectorize loads and stores.
+  bool VectorizeMemOps;
+
+  /// @brief Only generate aligned loads and stores.
+  bool AlignedOnly;
+
+  //===--------------------------------------------------------------------===//
+  // Misc parameters
+
+  /// @brief The required chain depth for vectorization.
+  unsigned ReqChainDepth;
+
+  /// @brief The maximum search distance for instruction pairs.
+  unsigned SearchLimit;
+
+  /// @brief The maximum number of candidate pairs with which to use a full
+  ///        cycle check.
+  unsigned MaxCandPairsForCycleCheck;
+
+  /// @brief Replicating one element to a pair breaks the chain.
+  bool SplatBreaksChain;
+
+  /// @brief The maximum number of pairable instructions per group.
+  unsigned MaxInsts;
+
+  /// @brief The maximum number of pairing iterations.
+  unsigned MaxIter;
+
+  /// @brief Don't boost the chain-depth contribution of loads and stores.
+  bool NoMemOpBoost;
+
+  /// @brief Use a fast instruction dependency analysis.
+  bool FastDep;
+
+  /// @brief Initialize the VectorizeConfig from command line options.
+  VectorizeConfig();
+};
+
+//===----------------------------------------------------------------------===//
+//
+// BBVectorize - A basic-block vectorization pass.
+//
+BasicBlockPass *
+createBBVectorizePass(const VectorizeConfig &C = VectorizeConfig());
+
+//===----------------------------------------------------------------------===//
+/// @brief Vectorize the BasicBlock.
+///
+/// @param BB The BasicBlock to be vectorized
+/// @param P  The current running pass, should require AliasAnalysis and
+///           ScalarEvolution. After the vectorization, AliasAnalysis,
+///           ScalarEvolution and CFG are preserved.
+///
+/// @return True if the BB is changed, false otherwise.
+///
+bool vectorizeBasicBlock(Pass *P, BasicBlock &BB,
+                         const VectorizeConfig &C = VectorizeConfig());
+
+} // End llvm namespace
+
+#endif