X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FModule.h;h=56207a0af27f35f8e3612be8e17f30ccdf1c3f61;hb=5eca075b74d62c621b160aa216b4cd50829a2cc7;hp=28e8b868c83fc42d05f8ebade2ac6a93f1a2475a;hpb=a7a35a831bf7aaa63287824645bb71937652e1b9;p=oota-llvm.git diff --git a/include/llvm/Module.h b/include/llvm/Module.h index 28e8b868c83..56207a0af27 100644 --- a/include/llvm/Module.h +++ b/include/llvm/Module.h @@ -1,11 +1,13 @@ -//===-- llvm/Module.h - C++ class to represent a VM module -------*- C++ -*--=// +//===-- llvm/Module.h - C++ class to represent a VM module ------*- C++ -*-===// // -// This file contains the declarations for the Module class that is used to -// maintain all the information related to a VM module. +// The LLVM Compiler Infrastructure // -// A module also maintains a GlobalValRefMap object that is used to hold all -// constant references to global variables in the module. When a global -// variable is destroyed, it should have no entries in the GlobalValueRefMap. +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +/// @file This file contains the declarations for the Module class. // //===----------------------------------------------------------------------===// @@ -14,188 +16,409 @@ #include "llvm/Function.h" #include "llvm/GlobalVariable.h" -class GlobalVariable; +#include "llvm/GlobalAlias.h" +#include "llvm/Support/DataTypes.h" +#include + +namespace llvm { + class GlobalValueRefMap; // Used by ConstantVals.cpp -class ConstantPointerRef; class FunctionType; -class SymbolTable; template<> struct ilist_traits - : public SymbolTableListTraits { - // createNode is used to create a node that marks the end of the list... - static Function *createNode(); + : public SymbolTableListTraits { + // createSentinel is used to create a node that marks the end of the list. + static Function *createSentinel(); + static void destroySentinel(Function *F) { delete F; } static iplist &getList(Module *M); + static inline ValueSymbolTable *getSymTab(Module *M); + static int getListOffset(); }; template<> struct ilist_traits - : public SymbolTableListTraits { - // createNode is used to create a node that marks the end of the list... - static GlobalVariable *createNode(); + : public SymbolTableListTraits { + // createSentinel is used to create a node that marks the end of the list. + static GlobalVariable *createSentinel(); + static void destroySentinel(GlobalVariable *GV) { delete GV; } static iplist &getList(Module *M); + static inline ValueSymbolTable *getSymTab(Module *M); + static int getListOffset(); +}; +template<> struct ilist_traits + : public SymbolTableListTraits { + // createSentinel is used to create a node that marks the end of the list. + static GlobalAlias *createSentinel(); + static void destroySentinel(GlobalAlias *GA) { delete GA; } + static iplist &getList(Module *M); + static inline ValueSymbolTable *getSymTab(Module *M); + static int getListOffset(); }; -struct Module : public Annotable { +/// A Module instance is used to store all the information related to an +/// LLVM module. Modules are the top level container of all other LLVM +/// Intermediate Representation (IR) objects. Each module directly contains a +/// list of globals variables, a list of functions, a list of libraries (or +/// other modules) this module depends on, a symbol table, and various data +/// about the target's characteristics. +/// +/// A module maintains a GlobalValRefMap object that is used to hold all +/// constant references to global variables in the module. When a global +/// variable is destroyed, it should have no entries in the GlobalValueRefMap. +/// @brief The main container class for the LLVM Intermediate Representation. +class Module { +/// @name Types And Enumerations +/// @{ +public: + /// The type for the list of global variables. typedef iplist GlobalListType; + /// The type for the list of functions. typedef iplist FunctionListType; + /// The type for the list of aliases. + typedef iplist AliasListType; - // Global Variable iterators... - typedef GlobalListType::iterator giterator; - typedef GlobalListType::const_iterator const_giterator; - typedef std::reverse_iterator reverse_giterator; - typedef std::reverse_iterator const_reverse_giterator; + /// The type for the list of dependent libraries. + typedef std::vector LibraryListType; - // Function iterators... + /// The Global Variable iterator. + typedef GlobalListType::iterator global_iterator; + /// The Global Variable constant iterator. + typedef GlobalListType::const_iterator const_global_iterator; + + /// The Function iterators. typedef FunctionListType::iterator iterator; + /// The Function constant iterator typedef FunctionListType::const_iterator const_iterator; - typedef std::reverse_iterator reverse_iterator; - typedef std::reverse_iterator const_reverse_iterator; + /// The Global Alias iterators. + typedef AliasListType::iterator alias_iterator; + /// The Global Alias constant iterator + typedef AliasListType::const_iterator const_alias_iterator; + + /// The Library list iterator. + typedef LibraryListType::const_iterator lib_iterator; + + /// An enumeration for describing the endianess of the target machine. enum Endianness { AnyEndianness, LittleEndian, BigEndian }; + + /// An enumeration for describing the size of a pointer on the target machine. enum PointerSize { AnyPointerSize, Pointer32, Pointer64 }; +/// @} +/// @name Member Variables +/// @{ private: - GlobalListType GlobalList; // The Global Variables in the module - FunctionListType FunctionList; // The Functions in the module - GlobalValueRefMap *GVRefMap; // Keep track of GlobalValueRef's - SymbolTable *SymTab; // Symbol Table for the module - std::string ModuleID; // Human readable identifier for the module - - // These flags are probably not the right long-term way to handle this kind of - // target information, but it is sufficient for now. - Endianness Endian; // True if target is little endian - PointerSize PtrSize; // True if target has 32-bit pointers (false = 64-bit) - - // Accessor for the underlying GVRefMap... only through the Constant class... + GlobalListType GlobalList; ///< The Global Variables in the module + FunctionListType FunctionList; ///< The Functions in the module + AliasListType AliasList; ///< The Aliases in the module + LibraryListType LibraryList; ///< The Libraries needed by the module + std::string GlobalScopeAsm; ///< Inline Asm at global scope. + ValueSymbolTable *ValSymTab; ///< Symbol table for values + TypeSymbolTable *TypeSymTab; ///< Symbol table for types + std::string ModuleID; ///< Human readable identifier for the module + std::string TargetTriple; ///< Platform target triple Module compiled on + std::string DataLayout; ///< Target data description + friend class Constant; - friend class ConstantPointerRef; - void mutateConstantPointerRef(GlobalValue *OldGV, GlobalValue *NewGV); - ConstantPointerRef *getConstantPointerRef(GlobalValue *GV); - void destroyConstantPointerRef(ConstantPointerRef *CPR); +/// @} +/// @name Constructors +/// @{ public: - Module(const std::string &ModuleID); + /// The Module constructor. Note that there is no default constructor. You + /// must provide a name for the module upon construction. + explicit Module(const std::string &ModuleID); + /// The module destructor. This will dropAllReferences. ~Module(); +/// @} +/// @name Module Level Accessors +/// @{ +public: + /// Get the module identifier which is, essentially, the name of the module. + /// @returns the module identifier as a string const std::string &getModuleIdentifier() const { return ModuleID; } - /// Target endian information... - Endianness getEndianness() const { return Endian; } - void setEndianness(Endianness E) { Endian = E; } + /// Get the data layout string for the module's target platform. This encodes + /// the type sizes and alignments expected by this module. + /// @returns the data layout as a string + const std::string& getDataLayout() const { return DataLayout; } + + /// Get the target triple which is a string describing the target host. + /// @returns a string containing the target triple. + const std::string &getTargetTriple() const { return TargetTriple; } + + /// Get the target endian information. + /// @returns Endianess - an enumeration for the endianess of the target + Endianness getEndianness() const; + + /// Get the target pointer size. + /// @returns PointerSize - an enumeration for the size of the target's pointer + PointerSize getPointerSize() const; + + /// Get any module-scope inline assembly blocks. + /// @returns a string containing the module-scope inline assembly blocks. + const std::string &getModuleInlineAsm() const { return GlobalScopeAsm; } +/// @} +/// @name Module Level Mutators +/// @{ +public: + + /// Set the module identifier. + void setModuleIdentifier(const std::string &ID) { ModuleID = ID; } + + /// Set the data layout + void setDataLayout(const std::string& DL) { DataLayout = DL; } + + /// Set the target triple. + void setTargetTriple(const std::string &T) { TargetTriple = T; } + + /// Set the module-scope inline assembly blocks. + void setModuleInlineAsm(const std::string &Asm) { GlobalScopeAsm = Asm; } + + /// Append to the module-scope inline assembly blocks, automatically + /// appending a newline to the end. + void appendModuleInlineAsm(const std::string &Asm) { + GlobalScopeAsm += Asm; + GlobalScopeAsm += '\n'; + } - /// Target Pointer Size information... - PointerSize getPointerSize() const { return PtrSize; } - void setPointerSize(PointerSize PS) { PtrSize = PS; } +/// @} +/// @name Function Accessors +/// @{ +public: + /// getOrInsertFunction - Look up the specified function in the module symbol + /// table. Four possibilities: + /// 1. If it does not exist, add a prototype for the function and return it. + /// 2. If it exists, and has internal linkage, the existing function is + /// renamed and a new one is inserted. + /// 3. Otherwise, if the existing function has the correct prototype, return + /// the existing function. + /// 4. Finally, the function exists but has the wrong prototype: return the + /// function with a constantexpr cast to the right prototype. + Constant *getOrInsertFunction(const std::string &Name, const FunctionType *T); /// getOrInsertFunction - Look up the specified function in the module symbol /// table. If it does not exist, add a prototype for the function and return - /// it. - Function *getOrInsertFunction(const std::string &Name, const FunctionType *T); + /// it. This function guarantees to return a constant of pointer to the + /// specified function type or a ConstantExpr BitCast of that type if the + /// named function has a different type. This version of the method takes a + /// null terminated list of function arguments, which makes it easier for + /// clients to use. + Constant *getOrInsertFunction(const std::string &Name, const Type *RetTy,...) + END_WITH_NULL; /// getFunction - Look up the specified function in the module symbol table. /// If it does not exist, return null. - /// - Function *getFunction(const std::string &Name, const FunctionType *Ty); + Function *getFunction(const std::string &Name) const; + Function *getFunction(const char *Name) const; - /// getMainFunction - This function looks up main efficiently. This is such a - /// common case, that it is a method in Module. If main cannot be found, a - /// null pointer is returned. - /// - Function *getMainFunction(); +/// @} +/// @name Global Variable Accessors +/// @{ +public: + /// getGlobalVariable - Look up the specified global variable in the module + /// symbol table. If it does not exist, return null. If AllowInternal is set + /// to true, this function will return types that have InternalLinkage. By + /// default, these types are not returned. + GlobalVariable *getGlobalVariable(const std::string &Name, + bool AllowInternal = false) const; + + /// getNamedGlobal - Return the first global variable in the module with the + /// specified name, of arbitrary type. This method returns null if a global + /// with the specified name is not found. + GlobalVariable *getNamedGlobal(const std::string &Name) const { + return getGlobalVariable(Name, true); + } - /// getNamedFunction - Return the first function in the module with the - /// specified name, of arbitrary type. This method returns null if a function +/// @} +/// @name Global Alias Accessors +/// @{ +public: + /// getNamedAlias - Return the first global alias in the module with the + /// specified name, of arbitrary type. This method returns null if a global /// with the specified name is not found. - /// - Function *getNamedFunction(const std::string &Name); + GlobalAlias *getNamedAlias(const std::string &Name) const; +/// @} +/// @name Type Accessors +/// @{ +public: /// addTypeName - Insert an entry in the symbol table mapping Str to Type. If /// there is already an entry for this name, true is returned and the symbol /// table is not modified. - /// bool addTypeName(const std::string &Name, const Type *Ty); /// getTypeName - If there is at least one entry in the symbol table for the /// specified type, return it. - /// - std::string getTypeName(const Type *Ty); - - /// Get the underlying elements of the Module... - inline const GlobalListType &getGlobalList() const { return GlobalList; } - inline GlobalListType &getGlobalList() { return GlobalList; } - inline const FunctionListType &getFunctionList() const { return FunctionList;} - inline FunctionListType &getFunctionList() { return FunctionList;} - - - //===--------------------------------------------------------------------===// - // Symbol table support functions... - - /// getSymbolTable() - Get access to the symbol table for the module, where - /// global variables and functions are identified. - /// - inline SymbolTable &getSymbolTable() { return *SymTab; } - inline const SymbolTable &getSymbolTable() const { return *SymTab; } - - - //===--------------------------------------------------------------------===// - // Module iterator forwarding functions - // - inline giterator gbegin() { return GlobalList.begin(); } - inline const_giterator gbegin() const { return GlobalList.begin(); } - inline giterator gend () { return GlobalList.end(); } - inline const_giterator gend () const { return GlobalList.end(); } - - inline reverse_giterator grbegin() { return GlobalList.rbegin(); } - inline const_reverse_giterator grbegin() const { return GlobalList.rbegin(); } - inline reverse_giterator grend () { return GlobalList.rend(); } - inline const_reverse_giterator grend () const { return GlobalList.rend(); } - - inline unsigned gsize() const { return GlobalList.size(); } - inline bool gempty() const { return GlobalList.empty(); } - inline const GlobalVariable &gfront() const { return GlobalList.front(); } - inline GlobalVariable &gfront() { return GlobalList.front(); } - inline const GlobalVariable &gback() const { return GlobalList.back(); } - inline GlobalVariable &gback() { return GlobalList.back(); } - - - - inline iterator begin() { return FunctionList.begin(); } - inline const_iterator begin() const { return FunctionList.begin(); } - inline iterator end () { return FunctionList.end(); } - inline const_iterator end () const { return FunctionList.end(); } - - inline reverse_iterator rbegin() { return FunctionList.rbegin(); } - inline const_reverse_iterator rbegin() const { return FunctionList.rbegin(); } - inline reverse_iterator rend () { return FunctionList.rend(); } - inline const_reverse_iterator rend () const { return FunctionList.rend(); } - - inline unsigned size() const { return FunctionList.size(); } - inline bool empty() const { return FunctionList.empty(); } - inline const Function &front() const { return FunctionList.front(); } - inline Function &front() { return FunctionList.front(); } - inline const Function &back() const { return FunctionList.back(); } - inline Function &back() { return FunctionList.back(); } - - void print(std::ostream &OS) const; - void dump() const; + std::string getTypeName(const Type *Ty) const; + + /// getTypeByName - Return the type with the specified name in this module, or + /// null if there is none by that name. + const Type *getTypeByName(const std::string &Name) const; - /// dropAllReferences() - This function causes all the subinstructions to "let - /// go" of all references that they are maintaining. This allows one to - /// 'delete' a whole class at a time, even though there may be circular - /// references... first all references are dropped, and all use counts go to - /// zero. Then everything is delete'd for real. Note that no operations are - /// valid on an object that has "dropped all references", except operator - /// delete. - /// +/// @} +/// @name Direct access to the globals list, functions list, and symbol table +/// @{ +public: + /// Get the Module's list of global variables (constant). + const GlobalListType &getGlobalList() const { return GlobalList; } + /// Get the Module's list of global variables. + GlobalListType &getGlobalList() { return GlobalList; } + /// Get the Module's list of functions (constant). + const FunctionListType &getFunctionList() const { return FunctionList; } + /// Get the Module's list of functions. + FunctionListType &getFunctionList() { return FunctionList; } + /// Get the Module's list of aliases (constant). + const AliasListType &getAliasList() const { return AliasList; } + /// Get the Module's list of aliases. + AliasListType &getAliasList() { return AliasList; } + /// Get the symbol table of global variable and function identifiers + const ValueSymbolTable &getValueSymbolTable() const { return *ValSymTab; } + /// Get the Module's symbol table of global variable and function identifiers. + ValueSymbolTable &getValueSymbolTable() { return *ValSymTab; } + /// Get the symbol table of types + const TypeSymbolTable &getTypeSymbolTable() const { return *TypeSymTab; } + /// Get the Module's symbol table of types + TypeSymbolTable &getTypeSymbolTable() { return *TypeSymTab; } + +/// @} +/// @name Global Variable Iteration +/// @{ +public: + /// Get an iterator to the first global variable + global_iterator global_begin() { return GlobalList.begin(); } + /// Get a constant iterator to the first global variable + const_global_iterator global_begin() const { return GlobalList.begin(); } + /// Get an iterator to the last global variable + global_iterator global_end () { return GlobalList.end(); } + /// Get a constant iterator to the last global variable + const_global_iterator global_end () const { return GlobalList.end(); } + /// Determine if the list of globals is empty. + bool global_empty() const { return GlobalList.empty(); } + +/// @} +/// @name Function Iteration +/// @{ +public: + /// Get an iterator to the first function. + iterator begin() { return FunctionList.begin(); } + /// Get a constant iterator to the first function. + const_iterator begin() const { return FunctionList.begin(); } + /// Get an iterator to the last function. + iterator end () { return FunctionList.end(); } + /// Get a constant iterator to the last function. + const_iterator end () const { return FunctionList.end(); } + /// Determine how many functions are in the Module's list of functions. + size_t size() const { return FunctionList.size(); } + /// Determine if the list of functions is empty. + bool empty() const { return FunctionList.empty(); } + +/// @} +/// @name Dependent Library Iteration +/// @{ +public: + /// @brief Get a constant iterator to beginning of dependent library list. + inline lib_iterator lib_begin() const { return LibraryList.begin(); } + /// @brief Get a constant iterator to end of dependent library list. + inline lib_iterator lib_end() const { return LibraryList.end(); } + /// @brief Returns the number of items in the list of libraries. + inline size_t lib_size() const { return LibraryList.size(); } + /// @brief Add a library to the list of dependent libraries + void addLibrary(const std::string& Lib); + /// @brief Remove a library from the list of dependent libraries + void removeLibrary(const std::string& Lib); + /// @brief Get all the libraries + inline const LibraryListType& getLibraries() const { return LibraryList; } + +/// @} +/// @name Alias Iteration +/// @{ +public: + /// Get an iterator to the first alias. + alias_iterator alias_begin() { return AliasList.begin(); } + /// Get a constant iterator to the first alias. + const_alias_iterator alias_begin() const { return AliasList.begin(); } + /// Get an iterator to the last alias. + alias_iterator alias_end () { return AliasList.end(); } + /// Get a constant iterator to the last alias. + const_alias_iterator alias_end () const { return AliasList.end(); } + /// Determine how many functions are in the Module's list of aliases. + size_t alias_size () const { return AliasList.size(); } + /// Determine if the list of aliases is empty. + bool alias_empty() const { return AliasList.empty(); } + +/// @} +/// @name Utility functions for printing and dumping Module objects +/// @{ +public: + /// Print the module to an output stream + void print(std::ostream &OS) const { print(OS, 0); } + void print(std::ostream *OS) const { if (OS) print(*OS); } + /// Print the module to an output stream with AssemblyAnnotationWriter. + void print(std::ostream &OS, AssemblyAnnotationWriter *AAW) const; + void print(std::ostream *OS, AssemblyAnnotationWriter *AAW) const { + if (OS) print(*OS, AAW); + } + /// Dump the module to std::cerr (for debugging). + void dump() const; + /// This function causes all the subinstructions to "let go" of all references + /// that they are maintaining. This allows one to 'delete' a whole class at + /// a time, even though there may be circular references... first all + /// references are dropped, and all use counts go to zero. Then everything + /// is delete'd for real. Note that no operations are valid on an object + /// that has "dropped all references", except operator delete. void dropAllReferences(); +/// @} + + static unsigned getFunctionListOffset() { + Module *Obj = 0; + return unsigned(reinterpret_cast(&Obj->FunctionList)); + } + static unsigned getGlobalVariableListOffset() { + Module *Obj = 0; + return unsigned(reinterpret_cast(&Obj->GlobalList)); + } + static unsigned getAliasListOffset() { + Module *Obj = 0; + return unsigned(reinterpret_cast(&Obj->AliasList)); + } }; -inline std::ostream &operator<<(std::ostream &O, const Module *M) { - M->print(O); - return O; -} - +/// An iostream inserter for modules. inline std::ostream &operator<<(std::ostream &O, const Module &M) { M.print(O); return O; } +inline ValueSymbolTable * +ilist_traits::getSymTab(Module *M) { + return M ? &M->getValueSymbolTable() : 0; +} + +inline ValueSymbolTable * +ilist_traits::getSymTab(Module *M) { + return M ? &M->getValueSymbolTable() : 0; +} + +inline ValueSymbolTable * +ilist_traits::getSymTab(Module *M) { + return M ? &M->getValueSymbolTable() : 0; +} + +inline int +ilist_traits::getListOffset() { + return Module::getFunctionListOffset(); +} + +inline int +ilist_traits::getListOffset() { + return Module::getGlobalVariableListOffset(); +} + +inline int +ilist_traits::getListOffset() { + return Module::getAliasListOffset(); +} + +} // End llvm namespace + #endif