| //===-- Function.cpp - Implement the Global object classes -------*- C++ -*--=// |
| // |
| // This file implements the Function & GlobalVariable classes for the VMCore |
| // library. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Module.h" |
| #include "llvm/DerivedTypes.h" |
| #include "llvm/iOther.h" |
| #include "SymbolTableListTraitsImpl.h" |
| |
| BasicBlock *ilist_traits<BasicBlock>::createNode() { |
| return new BasicBlock(); |
| } |
| |
| iplist<BasicBlock> &ilist_traits<BasicBlock>::getList(Function *F) { |
| return F->getBasicBlockList(); |
| } |
| |
| Argument *ilist_traits<Argument>::createNode() { |
| return new Argument(Type::IntTy); |
| } |
| |
| iplist<Argument> &ilist_traits<Argument>::getList(Function *F) { |
| return F->getArgumentList(); |
| } |
| |
| // Explicit instantiations of SymbolTableListTraits since some of the methods |
| // are not in the public header file... |
| template SymbolTableListTraits<Argument, Function, Function>; |
| template SymbolTableListTraits<BasicBlock, Function, Function>; |
| |
| //===----------------------------------------------------------------------===// |
| // Argument Implementation |
| //===----------------------------------------------------------------------===// |
| |
| Argument::Argument(const Type *Ty, const std::string &Name = "", Function *Par) |
| : Value(Ty, Value::ArgumentVal, Name) { |
| Parent = 0; |
| if (Par) |
| Par->getArgumentList().push_back(this); |
| } |
| |
| |
| // Specialize setName to take care of symbol table majik |
| void Argument::setName(const std::string &name, SymbolTable *ST) { |
| Function *P; |
| assert((ST == 0 || (!getParent() || ST == getParent()->getSymbolTable())) && |
| "Invalid symtab argument!"); |
| if ((P = getParent()) && hasName()) P->getSymbolTable()->remove(this); |
| Value::setName(name); |
| if (P && hasName()) P->getSymbolTable()->insert(this); |
| } |
| |
| void Argument::setParent(Function *parent) { |
| Parent = parent; |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // Function Implementation |
| //===----------------------------------------------------------------------===// |
| |
| Function::Function(const FunctionType *Ty, bool isInternal, |
| const std::string &name, Module *ParentModule) |
| : GlobalValue(PointerType::get(Ty), Value::FunctionVal, isInternal, name) { |
| BasicBlocks.setItemParent(this); |
| BasicBlocks.setParent(this); |
| ArgumentList.setItemParent(this); |
| ArgumentList.setParent(this); |
| ParentSymTab = SymTab = 0; |
| |
| if (ParentModule) |
| ParentModule->getFunctionList().push_back(this); |
| } |
| |
| Function::~Function() { |
| dropAllReferences(); // After this it is safe to delete instructions. |
| |
| BasicBlocks.clear(); // Delete all basic blocks... |
| |
| // Delete all of the method arguments and unlink from symbol table... |
| ArgumentList.clear(); |
| ArgumentList.setParent(0); |
| delete SymTab; |
| } |
| |
| // Specialize setName to take care of symbol table majik |
| void Function::setName(const std::string &name, SymbolTable *ST) { |
| Module *P; |
| assert((ST == 0 || (!getParent() || ST == getParent()->getSymbolTable())) && |
| "Invalid symtab argument!"); |
| if ((P = getParent()) && hasName()) P->getSymbolTable()->remove(this); |
| Value::setName(name); |
| if (P && getName() != "") P->getSymbolTableSure()->insert(this); |
| } |
| |
| void Function::setParent(Module *parent) { |
| Parent = parent; |
| |
| // Relink symbol tables together... |
| ParentSymTab = Parent ? Parent->getSymbolTableSure() : 0; |
| if (SymTab) SymTab->setParentSymTab(ParentSymTab); |
| } |
| |
| const FunctionType *Function::getFunctionType() const { |
| return cast<FunctionType>(getType()->getElementType()); |
| } |
| |
| const Type *Function::getReturnType() const { |
| return getFunctionType()->getReturnType(); |
| } |
| |
| SymbolTable *Function::getSymbolTableSure() { |
| if (!SymTab) SymTab = new SymbolTable(ParentSymTab); |
| return SymTab; |
| } |
| |
| // hasSymbolTable() - Returns true if there is a symbol table allocated to |
| // this object AND if there is at least one name in it! |
| // |
| bool Function::hasSymbolTable() const { |
| if (!SymTab) return false; |
| |
| for (SymbolTable::const_iterator I = SymTab->begin(); |
| I != SymTab->end(); ++I) { |
| if (I->second.begin() != I->second.end()) |
| return true; // Found nonempty type plane! |
| } |
| |
| return false; |
| } |
| |
| |
| // 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. |
| // |
| void Function::dropAllReferences() { |
| for (iterator I = begin(), E = end(); I != E; ++I) |
| I->dropAllReferences(); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // GlobalVariable Implementation |
| //===----------------------------------------------------------------------===// |
| |
| GlobalVariable::GlobalVariable(const Type *Ty, bool constant, bool isIntern, |
| Constant *Initializer, |
| const std::string &Name, Module *ParentModule) |
| : GlobalValue(PointerType::get(Ty), Value::GlobalVariableVal, isIntern, Name), |
| isConstantGlobal(constant) { |
| if (Initializer) Operands.push_back(Use((Value*)Initializer, this)); |
| |
| if (ParentModule) |
| ParentModule->getGlobalList().push_back(this); |
| } |
| |
| void GlobalVariable::setParent(Module *parent) { |
| Parent = parent; |
| } |
| |
| // Specialize setName to take care of symbol table majik |
| void GlobalVariable::setName(const std::string &name, SymbolTable *ST) { |
| Module *P; |
| assert((ST == 0 || (!getParent() || ST == getParent()->getSymbolTable())) && |
| "Invalid symtab argument!"); |
| if ((P = getParent()) && hasName()) P->getSymbolTable()->remove(this); |
| Value::setName(name); |
| if (P && getName() != "") P->getSymbolTableSure()->insert(this); |
| } |