1 //===-- Bitcode/Writer/ValueEnumerator.h - Number values --------*- 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 class gives values and types Unique ID's. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef VALUE_ENUMERATOR_H 15 #define VALUE_ENUMERATOR_H 16 17 #include "llvm/ADT/DenseMap.h" 18 #include "llvm/ADT/SmallVector.h" 19 #include "llvm/IR/Attributes.h" 20 #include <vector> 21 22 namespace llvm { 23 24 class Type; 25 class Value; 26 class Instruction; 27 class BasicBlock; 28 class Function; 29 class Module; 30 class Metadata; 31 class LocalAsMetadata; 32 class MDNode; 33 class NamedMDNode; 34 class AttributeSet; 35 class ValueSymbolTable; 36 class MDSymbolTable; 37 class raw_ostream; 38 39 } // end llvm namespace 40 41 namespace llvm_2_9 { 42 43 class ValueEnumerator { 44 public: 45 typedef std::vector<llvm::Type*> TypeList; 46 47 // For each value, we remember its Value* and occurrence frequency. 48 typedef std::vector<std::pair<const llvm::Value*, unsigned> > ValueList; 49 private: 50 typedef llvm::DenseMap<llvm::Type*, unsigned> TypeMapType; 51 TypeMapType TypeMap; 52 TypeList Types; 53 54 typedef llvm::DenseMap<const llvm::Value*, unsigned> ValueMapType; 55 ValueMapType ValueMap; 56 ValueList Values; 57 58 59 std::vector<const llvm::Metadata *> MDs; 60 llvm::SmallVector<const llvm::LocalAsMetadata *, 8> FunctionLocalMDs; 61 typedef llvm::DenseMap<const llvm::Metadata *, unsigned> MetadataMapType; 62 MetadataMapType MDValueMap; 63 bool HasMDString; 64 bool HasDILocation; 65 66 typedef llvm::DenseMap<llvm::AttributeSet, unsigned> AttributeGroupMapType; 67 AttributeGroupMapType AttributeGroupMap; 68 std::vector<llvm::AttributeSet> AttributeGroups; 69 70 typedef llvm::DenseMap<llvm::AttributeSet, unsigned> AttributeMapType; 71 AttributeMapType AttributeMap; 72 std::vector<llvm::AttributeSet> Attribute; 73 74 /// GlobalBasicBlockIDs - This map memoizes the basic block ID's referenced by 75 /// the "getGlobalBasicBlockID" method. 76 mutable llvm::DenseMap<const llvm::BasicBlock*, unsigned> GlobalBasicBlockIDs; 77 78 typedef llvm::DenseMap<const llvm::Instruction*, unsigned> InstructionMapType; 79 InstructionMapType InstructionMap; 80 unsigned InstructionCount; 81 82 /// BasicBlocks - This contains all the basic blocks for the currently 83 /// incorporated function. Their reverse mapping is stored in ValueMap. 84 std::vector<const llvm::BasicBlock*> BasicBlocks; 85 86 /// When a function is incorporated, this is the size of the Values list 87 /// before incorporation. 88 unsigned NumModuleValues; 89 90 /// When a function is incorporated, this is the size of the MDValues list 91 /// before incorporation. 92 unsigned NumModuleMDs; 93 94 unsigned FirstFuncConstantID; 95 unsigned FirstInstID; 96 97 ValueEnumerator(const ValueEnumerator &) = delete; 98 void operator=(const ValueEnumerator &) = delete; 99 public: 100 ValueEnumerator(const llvm::Module &M); 101 102 void dump() const; 103 void print(llvm::raw_ostream &OS, const ValueMapType &Map, const char *Name) const; 104 void print(llvm::raw_ostream &OS, const MetadataMapType &Map, 105 const char *Name) const; 106 107 unsigned getValueID(const llvm::Value *V) const; 108 unsigned getMetadataID(const llvm::Metadata *MD) const { 109 auto ID = getMetadataOrNullID(MD); 110 assert(ID != 0 && "Metadata not in slotcalculator!"); 111 return ID - 1; 112 } 113 unsigned getMetadataOrNullID(const llvm::Metadata *MD) const { 114 return MDValueMap.lookup(MD); 115 } 116 117 bool hasMDString() const { return HasMDString; } 118 bool hasDILocation() const { return HasDILocation; } 119 120 unsigned getTypeID(llvm::Type *T) const { 121 TypeMapType::const_iterator I = TypeMap.find(T); 122 assert(I != TypeMap.end() && "Type not in ValueEnumerator!"); 123 return I->second-1; 124 } 125 126 unsigned getInstructionID(const llvm::Instruction *I) const; 127 void setInstructionID(const llvm::Instruction *I); 128 129 unsigned getAttributeID(llvm::AttributeSet PAL) const { 130 if (PAL.isEmpty()) return 0; // Null maps to zero. 131 AttributeMapType::const_iterator I = AttributeMap.find(PAL); 132 assert(I != AttributeMap.end() && "Attribute not in ValueEnumerator!"); 133 return I->second; 134 } 135 136 unsigned getAttributeGroupID(llvm::AttributeSet PAL) const { 137 if (PAL.isEmpty()) return 0; // Null maps to zero. 138 AttributeGroupMapType::const_iterator I = AttributeGroupMap.find(PAL); 139 assert(I != AttributeGroupMap.end() && "Attribute not in ValueEnumerator!"); 140 return I->second; 141 } 142 143 /// getFunctionConstantRange - Return the range of values that corresponds to 144 /// function-local constants. 145 void getFunctionConstantRange(unsigned &Start, unsigned &End) const { 146 Start = FirstFuncConstantID; 147 End = FirstInstID; 148 } 149 150 const ValueList &getValues() const { return Values; } 151 const std::vector<const llvm::Metadata *> &getMDs() const { return MDs; } 152 const llvm::SmallVectorImpl<const llvm::LocalAsMetadata *> &getFunctionLocalMDs() const { 153 return FunctionLocalMDs; 154 } 155 const TypeList &getTypes() const { return Types; } 156 const std::vector<const llvm::BasicBlock*> &getBasicBlocks() const { 157 return BasicBlocks; 158 } 159 const std::vector<llvm::AttributeSet> &getAttributes() const { 160 return Attribute; 161 } 162 const std::vector<llvm::AttributeSet> &getAttributeGroups() const { 163 return AttributeGroups; 164 } 165 166 /// getGlobalBasicBlockID - This returns the function-specific ID for the 167 /// specified basic block. This is relatively expensive information, so it 168 /// should only be used by rare constructs such as address-of-label. 169 unsigned getGlobalBasicBlockID(const llvm::BasicBlock *BB) const; 170 171 /// incorporateFunction/purgeFunction - If you'd like to deal with a function, 172 /// use these two methods to get its data into the ValueEnumerator! 173 /// 174 void incorporateFunction(const llvm::Function &F); 175 void purgeFunction(); 176 177 private: 178 void OptimizeConstants(unsigned CstStart, unsigned CstEnd); 179 180 void EnumerateMDNodeOperands(const llvm::MDNode *N); 181 void EnumerateMetadata(const llvm::Metadata *MD); 182 void EnumerateFunctionLocalMetadata(const llvm::LocalAsMetadata *Local); 183 void EnumerateNamedMDNode(const llvm::NamedMDNode *NMD); 184 void EnumerateValue(const llvm::Value *V); 185 void EnumerateType(llvm::Type *T); 186 void EnumerateOperandType(const llvm::Value *V); 187 void EnumerateAttributes(llvm::AttributeSet PAL); 188 189 void EnumerateValueSymbolTable(const llvm::ValueSymbolTable &ST); 190 void EnumerateNamedMetadata(const llvm::Module &M); 191 }; 192 193 } // end llvm_2_9 namespace 194 195 #endif 196
