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https://github.com/c64scene-ar/llvm-6502.git
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2358 91177308-0d34-0410-b5e6-96231b3b80d8
165 lines
7.0 KiB
C++
165 lines
7.0 KiB
C++
//===-- llvm/Module.h - C++ class to represent a VM module -------*- C++ -*--=//
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//
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// This file contains the declarations for the Module class that is used to
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// maintain all the information related to a VM module.
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//
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// A module also maintains a GlobalValRefMap object that is used to hold all
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// constant references to global variables in the module. When a global
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// variable is destroyed, it should have no entries in the GlobalValueRefMap.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MODULE_H
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#define LLVM_MODULE_H
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#include "llvm/Value.h"
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#include "llvm/ValueHolder.h"
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class GlobalVariable;
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class GlobalValueRefMap; // Used by ConstantVals.cpp
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class ConstantPointerRef;
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class FunctionType;
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class SymbolTable;
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class Module : public Annotable {
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public:
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typedef ValueHolder<GlobalVariable, Module, Module> GlobalListType;
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typedef ValueHolder<Function, Module, Module> FunctionListType;
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// Global Variable iterators...
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typedef GlobalListType::iterator giterator;
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typedef GlobalListType::const_iterator const_giterator;
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typedef std::reverse_iterator<giterator> reverse_giterator;
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typedef std::reverse_iterator<const_giterator> const_reverse_giterator;
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// Function iterators...
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typedef FunctionListType::iterator iterator;
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typedef FunctionListType::const_iterator const_iterator;
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typedef std::reverse_iterator<iterator> reverse_iterator;
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typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
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private:
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GlobalListType GlobalList; // The Global Variables
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FunctionListType FunctionList; // The Functions
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GlobalValueRefMap *GVRefMap;
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SymbolTable *SymTab;
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// Accessor for the underlying GlobalValRefMap... only through the
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// ConstantPointerRef class...
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friend class ConstantPointerRef;
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void mutateConstantPointerRef(GlobalValue *OldGV, GlobalValue *NewGV);
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ConstantPointerRef *getConstantPointerRef(GlobalValue *GV);
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public:
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Module();
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~Module();
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// getOrInsertFunction - Look up the specified function in the module symbol
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// table. If it does not exist, add a prototype for the function and return
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// it.
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Function *getOrInsertFunction(const std::string &Name, const FunctionType *T);
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// getFunction - Look up the specified function in the module symbol table.
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// If it does not exist, return null.
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//
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Function *getFunction(const std::string &Name, const FunctionType *Ty);
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// addTypeName - Insert an entry in the symbol table mapping Str to Type. If
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// there is already an entry for this name, true is returned and the symbol
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// table is not modified.
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//
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bool addTypeName(const std::string &Name, const Type *Ty);
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// getTypeName - If there is at least one entry in the symbol table for the
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// specified type, return it.
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//
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std::string getTypeName(const Type *Ty);
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// Get the underlying elements of the Module...
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inline const GlobalListType &getGlobalList() const { return GlobalList; }
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inline GlobalListType &getGlobalList() { return GlobalList; }
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inline const FunctionListType &getFunctionList() const { return FunctionList;}
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inline FunctionListType &getFunctionList() { return FunctionList;}
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//===--------------------------------------------------------------------===//
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// Symbol table support functions...
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// hasSymbolTable() - Returns true if there is a symbol table allocated to
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// this object AND if there is at least one name in it!
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//
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bool hasSymbolTable() const;
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// CAUTION: The current symbol table may be null if there are no names (ie,
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// the symbol table is empty)
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//
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inline SymbolTable *getSymbolTable() { return SymTab; }
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inline const SymbolTable *getSymbolTable() const { return SymTab; }
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// getSymbolTableSure is guaranteed to not return a null pointer, because if
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// the method does not already have a symtab, one is created. Use this if
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// you intend to put something into the symbol table for the method.
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//
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SymbolTable *getSymbolTableSure();
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//===--------------------------------------------------------------------===//
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// Module iterator forwarding functions
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//
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inline giterator gbegin() { return GlobalList.begin(); }
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inline const_giterator gbegin() const { return GlobalList.begin(); }
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inline giterator gend () { return GlobalList.end(); }
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inline const_giterator gend () const { return GlobalList.end(); }
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inline reverse_giterator grbegin() { return GlobalList.rbegin(); }
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inline const_reverse_giterator grbegin() const { return GlobalList.rbegin(); }
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inline reverse_giterator grend () { return GlobalList.rend(); }
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inline const_reverse_giterator grend () const { return GlobalList.rend(); }
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inline unsigned gsize() const { return GlobalList.size(); }
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inline bool gempty() const { return GlobalList.empty(); }
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inline const GlobalVariable *gfront() const { return GlobalList.front(); }
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inline GlobalVariable *gfront() { return GlobalList.front(); }
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inline const GlobalVariable *gback() const { return GlobalList.back(); }
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inline GlobalVariable *gback() { return GlobalList.back(); }
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inline iterator begin() { return FunctionList.begin(); }
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inline const_iterator begin() const { return FunctionList.begin(); }
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inline iterator end () { return FunctionList.end(); }
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inline const_iterator end () const { return FunctionList.end(); }
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inline reverse_iterator rbegin() { return FunctionList.rbegin(); }
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inline const_reverse_iterator rbegin() const { return FunctionList.rbegin(); }
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inline reverse_iterator rend () { return FunctionList.rend(); }
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inline const_reverse_iterator rend () const { return FunctionList.rend(); }
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inline unsigned size() const { return FunctionList.size(); }
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inline bool empty() const { return FunctionList.empty(); }
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inline const Function *front() const { return FunctionList.front(); }
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inline Function *front() { return FunctionList.front(); }
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inline const Function *back() const { return FunctionList.back(); }
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inline Function *back() { return FunctionList.back(); }
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void print(std::ostream &OS) const;
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// dropAllReferences() - This function causes all the subinstructions to "let
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// go" of all references that they are maintaining. This allows one to
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// 'delete' a whole class at a time, even though there may be circular
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// references... first all references are dropped, and all use counts go to
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// zero. Then everything is delete'd for real. Note that no operations are
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// valid on an object that has "dropped all references", except operator
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// delete.
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//
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void dropAllReferences();
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};
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inline std::ostream &operator<<(std::ostream &O, const Module *M) {
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M->print(O);
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return O;
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}
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#endif
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