1 //===-- Vectorize.h - Vectorization Transformations -------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This header file defines prototypes for accessor functions that expose passes 11 // in the Vectorize transformations library. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_TRANSFORMS_VECTORIZE_H 16 #define LLVM_TRANSFORMS_VECTORIZE_H 17 18 namespace llvm { 19 class BasicBlock; 20 class BasicBlockPass; 21 22 //===----------------------------------------------------------------------===// 23 /// @brief Vectorize configuration. 24 struct VectorizeConfig { 25 //===--------------------------------------------------------------------===// 26 // Target architecture related parameters 27 28 /// @brief The size of the native vector registers. 29 unsigned VectorBits; 30 31 /// @brief Vectorize integer values. 32 bool VectorizeInts; 33 34 /// @brief Vectorize floating-point values. 35 bool VectorizeFloats; 36 37 /// @brief Vectorize pointer values. 38 bool VectorizePointers; 39 40 /// @brief Vectorize casting (conversion) operations. 41 bool VectorizeCasts; 42 43 /// @brief Vectorize floating-point math intrinsics. 44 bool VectorizeMath; 45 46 /// @brief Vectorize the fused-multiply-add intrinsic. 47 bool VectorizeFMA; 48 49 /// @brief Vectorize select instructions. 50 bool VectorizeSelect; 51 52 /// @brief Vectorize getelementptr instructions. 53 bool VectorizeGEP; 54 55 /// @brief Vectorize loads and stores. 56 bool VectorizeMemOps; 57 58 /// @brief Only generate aligned loads and stores. 59 bool AlignedOnly; 60 61 //===--------------------------------------------------------------------===// 62 // Misc parameters 63 64 /// @brief The required chain depth for vectorization. 65 unsigned ReqChainDepth; 66 67 /// @brief The maximum search distance for instruction pairs. 68 unsigned SearchLimit; 69 70 /// @brief The maximum number of candidate pairs with which to use a full 71 /// cycle check. 72 unsigned MaxCandPairsForCycleCheck; 73 74 /// @brief Replicating one element to a pair breaks the chain. 75 bool SplatBreaksChain; 76 77 /// @brief The maximum number of pairable instructions per group. 78 unsigned MaxInsts; 79 80 /// @brief The maximum number of pairing iterations. 81 unsigned MaxIter; 82 83 /// @brief Don't boost the chain-depth contribution of loads and stores. 84 bool NoMemOpBoost; 85 86 /// @brief Use a fast instruction dependency analysis. 87 bool FastDep; 88 89 /// @brief Initialize the VectorizeConfig from command line options. 90 VectorizeConfig(); 91 }; 92 93 //===----------------------------------------------------------------------===// 94 // 95 // BBVectorize - A basic-block vectorization pass. 96 // 97 BasicBlockPass * 98 createBBVectorizePass(const VectorizeConfig &C = VectorizeConfig()); 99 100 //===----------------------------------------------------------------------===// 101 /// @brief Vectorize the BasicBlock. 102 /// 103 /// @param BB The BasicBlock to be vectorized 104 /// @param P The current running pass, should require AliasAnalysis and 105 /// ScalarEvolution. After the vectorization, AliasAnalysis, 106 /// ScalarEvolution and CFG are preserved. 107 /// 108 /// @return True if the BB is changed, false otherwise. 109 /// 110 bool vectorizeBasicBlock(Pass *P, BasicBlock &BB, 111 const VectorizeConfig &C = VectorizeConfig()); 112 113 } // End llvm namespace 114 115 #endif 116
