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/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 MDNode; 31 class NamedMDNode; 32 class AttrListPtr; 33 class ValueSymbolTable; 34 class MDSymbolTable; 35 class raw_ostream; 36 37 } // end llvm namespace 38 39 namespace llvm_2_9 { 40 41 class ValueEnumerator { 42 public: 43 typedef std::vector<llvm::Type*> TypeList; 44 45 // For each value, we remember its Value* and occurrence frequency. 46 typedef std::vector<std::pair<const llvm::Value*, unsigned> > ValueList; 47 private: 48 typedef llvm::DenseMap<llvm::Type*, unsigned> TypeMapType; 49 TypeMapType TypeMap; 50 TypeList Types; 51 52 typedef llvm::DenseMap<const llvm::Value*, unsigned> ValueMapType; 53 ValueMapType ValueMap; 54 ValueList Values; 55 ValueList MDValues; 56 llvm::SmallVector<const llvm::MDNode *, 8> FunctionLocalMDs; 57 ValueMapType MDValueMap; 58 59 typedef llvm::DenseMap<void*, unsigned> AttributeMapType; 60 AttributeMapType AttributeMap; 61 std::vector<llvm::AttrListPtr> Attributes; 62 63 /// GlobalBasicBlockIDs - This map memoizes the basic block ID's referenced by 64 /// the "getGlobalBasicBlockID" method. 65 mutable llvm::DenseMap<const llvm::BasicBlock*, unsigned> GlobalBasicBlockIDs; 66 67 typedef llvm::DenseMap<const llvm::Instruction*, unsigned> InstructionMapType; 68 InstructionMapType InstructionMap; 69 unsigned InstructionCount; 70 71 /// BasicBlocks - This contains all the basic blocks for the currently 72 /// incorporated function. Their reverse mapping is stored in ValueMap. 73 std::vector<const llvm::BasicBlock*> BasicBlocks; 74 75 /// When a function is incorporated, this is the size of the Values list 76 /// before incorporation. 77 unsigned NumModuleValues; 78 79 /// When a function is incorporated, this is the size of the MDValues list 80 /// before incorporation. 81 unsigned NumModuleMDValues; 82 83 unsigned FirstFuncConstantID; 84 unsigned FirstInstID; 85 86 ValueEnumerator(const ValueEnumerator &); // DO NOT IMPLEMENT 87 void operator=(const ValueEnumerator &); // DO NOT IMPLEMENT 88 public: 89 ValueEnumerator(const llvm::Module *M); 90 91 void dump() const; 92 void print(llvm::raw_ostream &OS, const ValueMapType &Map, const char *Name) const; 93 94 unsigned getValueID(const llvm::Value *V) const; 95 96 unsigned getTypeID(llvm::Type *T) const { 97 TypeMapType::const_iterator I = TypeMap.find(T); 98 assert(I != TypeMap.end() && "Type not in ValueEnumerator!"); 99 return I->second-1; 100 } 101 102 unsigned getInstructionID(const llvm::Instruction *I) const; 103 void setInstructionID(const llvm::Instruction *I); 104 105 unsigned getAttributeID(const llvm::AttrListPtr &PAL) const { 106 if (PAL.isEmpty()) return 0; // Null maps to zero. 107 AttributeMapType::const_iterator I = AttributeMap.find(PAL.getRawPointer()); 108 assert(I != AttributeMap.end() && "Attribute not in ValueEnumerator!"); 109 return I->second; 110 } 111 112 /// getFunctionConstantRange - Return the range of values that corresponds to 113 /// function-local constants. 114 void getFunctionConstantRange(unsigned &Start, unsigned &End) const { 115 Start = FirstFuncConstantID; 116 End = FirstInstID; 117 } 118 119 const ValueList &getValues() const { return Values; } 120 const ValueList &getMDValues() const { return MDValues; } 121 const llvm::SmallVector<const llvm::MDNode *, 8> &getFunctionLocalMDValues() const { 122 return FunctionLocalMDs; 123 } 124 const TypeList &getTypes() const { return Types; } 125 const std::vector<const llvm::BasicBlock*> &getBasicBlocks() const { 126 return BasicBlocks; 127 } 128 const std::vector<llvm::AttrListPtr> &getAttributes() const { 129 return Attributes; 130 } 131 132 /// getGlobalBasicBlockID - This returns the function-specific ID for the 133 /// specified basic block. This is relatively expensive information, so it 134 /// should only be used by rare constructs such as address-of-label. 135 unsigned getGlobalBasicBlockID(const llvm::BasicBlock *BB) const; 136 137 /// incorporateFunction/purgeFunction - If you'd like to deal with a function, 138 /// use these two methods to get its data into the ValueEnumerator! 139 /// 140 void incorporateFunction(const llvm::Function &F); 141 void purgeFunction(); 142 143 private: 144 void OptimizeConstants(unsigned CstStart, unsigned CstEnd); 145 146 void EnumerateMDNodeOperands(const llvm::MDNode *N); 147 void EnumerateMetadata(const llvm::Value *MD); 148 void EnumerateFunctionLocalMetadata(const llvm::MDNode *N); 149 void EnumerateNamedMDNode(const llvm::NamedMDNode *NMD); 150 void EnumerateValue(const llvm::Value *V); 151 void EnumerateType(llvm::Type *T); 152 void EnumerateOperandType(const llvm::Value *V); 153 void EnumerateAttributes(const llvm::AttrListPtr &PAL); 154 155 void EnumerateValueSymbolTable(const llvm::ValueSymbolTable &ST); 156 void EnumerateNamedMetadata(const llvm::Module *M); 157 }; 158 159 } // end llvm_2_9 namespace 160 161 #endif 162
