//===-- llvm/GlobalVariable.h - GlobalVariable class ------------*- C++ -*-===//
-//
+//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+//
//===----------------------------------------------------------------------===//
//
// This file contains the declaration of the GlobalVariable class, which
class Module;
class Constant;
class PointerType;
-template<typename SC> struct ilist_traits;
-template<typename ValueSubClass, typename ItemParentClass, typename SymTabClass,
- typename SubClass> class SymbolTableListTraits;
+template<typename ValueSubClass, typename ItemParentClass>
+ class SymbolTableListTraits;
class GlobalVariable : public GlobalValue {
- friend class SymbolTableListTraits<GlobalVariable, Module, Module,
- ilist_traits<GlobalVariable> >;
+ friend class SymbolTableListTraits<GlobalVariable, Module>;
+ void operator=(const GlobalVariable &); // Do not implement
+ GlobalVariable(const GlobalVariable &); // Do not implement
+
void setParent(Module *parent);
GlobalVariable *Prev, *Next;
void setNext(GlobalVariable *N) { Next = N; }
void setPrev(GlobalVariable *N) { Prev = N; }
- bool isConstantGlobal; // Is this a global constant?
+ bool isConstantGlobal : 1; // Is this a global constant?
+ bool isThreadLocalSymbol : 1; // Is this symbol "Thread Local"?
Use Initializer;
+protected:
+ static void destroyThis(GlobalVariable*v) {
+ GlobalValue::destroyThis(v);
+ }
+ friend class Value;
public:
/// GlobalVariable ctor - If a parent module is specified, the global is
/// automatically inserted into the end of the specified modules global list.
- ///
GlobalVariable(const Type *Ty, bool isConstant, LinkageTypes Linkage,
- Constant *Initializer = 0, const std::string &Name = "",
- Module *Parent = 0);
-
- // Specialize setName to handle symbol table majik.
- virtual void setName(const std::string &name);
-
- /// isExternal - Is this global variable lacking an initializer? If so, the
- /// global variable is defined in some other translation unit, and is thus
- /// externally defined here.
- ///
- virtual bool isExternal() const { return getNumOperands() == 0; }
+ Constant *Initializer = 0, const std::string &Name = "",
+ Module *Parent = 0, bool ThreadLocal = false);
+ /// GlobalVariable ctor - This creates a global and inserts it before the
+ /// specified other global.
+ GlobalVariable(const Type *Ty, bool isConstant, LinkageTypes Linkage,
+ Constant *Initializer, const std::string &Name,
+ GlobalVariable *InsertBefore, bool ThreadLocal = false);
+
+ /// isDeclaration - Is this global variable lacking an initializer? If so,
+ /// the global variable is defined in some other translation unit, and is thus
+ /// only a declaration here.
+ virtual bool isDeclaration() const { return getNumOperands() == 0; }
/// hasInitializer - Unless a global variable isExternal(), it has an
/// initializer. The initializer for the global variable/constant is held by
/// Initializer if an initializer is specified.
///
- inline bool hasInitializer() const { return !isExternal(); }
+ inline bool hasInitializer() const { return !isDeclaration(); }
/// getInitializer - Return the initializer for this global variable. It is
/// illegal to call this method if the global is external, because we cannot
}
}
- // getNext/Prev - Return the next or previous global variable in the list.
- GlobalVariable *getNext() { return Next; }
- const GlobalVariable *getNext() const { return Next; }
- GlobalVariable *getPrev() { return Prev; }
- const GlobalVariable *getPrev() const { return Prev; }
-
/// If the value is a global constant, its value is immutable throughout the
/// runtime execution of the program. Assigning a value into the constant
/// leads to undefined behavior.
bool isConstant() const { return isConstantGlobal; }
void setConstant(bool Value) { isConstantGlobal = Value; }
+ /// If the value is "Thread Local", its value isn't shared by the threads.
+ bool isThreadLocal() const { return isThreadLocalSymbol; }
+ void setThreadLocal(bool Value) { isThreadLocalSymbol = Value; }
+
/// removeFromParent - This method unlinks 'this' from the containing module,
/// but does not delete it.
///
/// and deletes it.
///
void eraseFromParent();
-
- /// Override Constant's implementation of this method so we can
+
+ /// Override Constant's implementation of this method so we can
/// replace constant initializers.
- virtual void replaceUsesOfWithOnConstant(Value *From, Value *To,
- bool DisableChecking = false);
-
+ virtual void replaceUsesOfWithOnConstant(Value *From, Value *To, Use *U);
+
virtual void print(std::ostream &OS) const;
+ void print(std::ostream *OS) const { if (OS) print(*OS); }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const GlobalVariable *) { return true; }
static inline bool classof(const Value *V) {
- return V->getValueType() == Value::GlobalVariableVal;
+ return V->getValueID() == Value::GlobalVariableVal;
}
+private:
+ // getNext/Prev - Return the next or previous global variable in the list.
+ GlobalVariable *getNext() { return Next; }
+ const GlobalVariable *getNext() const { return Next; }
+ GlobalVariable *getPrev() { return Prev; }
+ const GlobalVariable *getPrev() const { return Prev; }
};
} // End llvm namespace
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