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Diffstat (limited to 'include/llvm/GlobalVariable.h')
| -rw-r--r-- | include/llvm/GlobalVariable.h | 191 | 
1 files changed, 0 insertions, 191 deletions
| diff --git a/include/llvm/GlobalVariable.h b/include/llvm/GlobalVariable.h deleted file mode 100644 index b9d3f68642f4..000000000000 --- a/include/llvm/GlobalVariable.h +++ /dev/null @@ -1,191 +0,0 @@ -//===-- llvm/GlobalVariable.h - GlobalVariable class ------------*- C++ -*-===// -// -//                     The LLVM Compiler Infrastructure -// -// This file 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 -// represents a single global variable (or constant) in the VM. -// -// Global variables are constant pointers that refer to hunks of space that are -// allocated by either the VM, or by the linker in a static compiler.  A global -// variable may have an initial value, which is copied into the executables .data -// area.  Global Constants are required to have initializers. -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_GLOBAL_VARIABLE_H -#define LLVM_GLOBAL_VARIABLE_H - -#include "llvm/GlobalValue.h" -#include "llvm/OperandTraits.h" -#include "llvm/ADT/ilist_node.h" -#include "llvm/ADT/Twine.h" - -namespace llvm { - -class Module; -class Constant; -template<typename ValueSubClass, typename ItemParentClass> -  class SymbolTableListTraits; - -class GlobalVariable : public GlobalValue, public ilist_node<GlobalVariable> { -  friend class SymbolTableListTraits<GlobalVariable, Module>; -  void *operator new(size_t, unsigned) LLVM_DELETED_FUNCTION; -  void operator=(const GlobalVariable &) LLVM_DELETED_FUNCTION; -  GlobalVariable(const GlobalVariable &) LLVM_DELETED_FUNCTION; - -  void setParent(Module *parent); - -  bool isConstantGlobal : 1;           // Is this a global constant? -  unsigned threadLocalMode : 3;        // Is this symbol "Thread Local", -                                       // if so, what is the desired model? - -public: -  // allocate space for exactly one operand -  void *operator new(size_t s) { -    return User::operator new(s, 1); -  } - -  enum ThreadLocalMode { -    NotThreadLocal = 0, -    GeneralDynamicTLSModel, -    LocalDynamicTLSModel, -    InitialExecTLSModel, -    LocalExecTLSModel -  }; - -  /// GlobalVariable ctor - If a parent module is specified, the global is -  /// automatically inserted into the end of the specified modules global list. -  GlobalVariable(Type *Ty, bool isConstant, LinkageTypes Linkage, -                 Constant *Initializer = 0, const Twine &Name = "", -                 ThreadLocalMode = NotThreadLocal, unsigned AddressSpace = 0); -  /// GlobalVariable ctor - This creates a global and inserts it before the -  /// specified other global. -  GlobalVariable(Module &M, Type *Ty, bool isConstant, -                 LinkageTypes Linkage, Constant *Initializer, -                 const Twine &Name = "", -                 GlobalVariable *InsertBefore = 0, -                 ThreadLocalMode = NotThreadLocal, -                 unsigned AddressSpace = 0); - -  ~GlobalVariable() { -    NumOperands = 1; // FIXME: needed by operator delete -  } - -  /// Provide fast operand accessors -  DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value); - -  /// 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 !isDeclaration(); } - -  /// hasDefinitiveInitializer - Whether the global variable has an initializer, -  /// and any other instances of the global (this can happen due to weak -  /// linkage) are guaranteed to have the same initializer. -  /// -  /// Note that if you want to transform a global, you must use -  /// hasUniqueInitializer() instead, because of the *_odr linkage type. -  /// -  /// Example: -  /// -  /// @a = global SomeType* null - Initializer is both definitive and unique. -  /// -  /// @b = global weak SomeType* null - Initializer is neither definitive nor -  /// unique. -  /// -  /// @c = global weak_odr SomeType* null - Initializer is definitive, but not -  /// unique. -  inline bool hasDefinitiveInitializer() const { -    return hasInitializer() && -      // The initializer of a global variable with weak linkage may change at -      // link time. -      !mayBeOverridden(); -  } - -  /// hasUniqueInitializer - Whether the global variable has an initializer, and -  /// any changes made to the initializer will turn up in the final executable. -  inline bool hasUniqueInitializer() const { -    return hasInitializer() && -      // It's not safe to modify initializers of global variables with weak -      // linkage, because the linker might choose to discard the initializer and -      // use the initializer from another instance of the global variable -      // instead. It is wrong to modify the initializer of a global variable -      // with *_odr linkage because then different instances of the global may -      // have different initializers, breaking the One Definition Rule. -      !isWeakForLinker(); -  } - -  /// getInitializer - Return the initializer for this global variable.  It is -  /// illegal to call this method if the global is external, because we cannot -  /// tell what the value is initialized to! -  /// -  inline const Constant *getInitializer() const { -    assert(hasInitializer() && "GV doesn't have initializer!"); -    return static_cast<Constant*>(Op<0>().get()); -  } -  inline Constant *getInitializer() { -    assert(hasInitializer() && "GV doesn't have initializer!"); -    return static_cast<Constant*>(Op<0>().get()); -  } -  /// setInitializer - Sets the initializer for this global variable, removing -  /// any existing initializer if InitVal==NULL.  If this GV has type T*, the -  /// initializer must have type T. -  void setInitializer(Constant *InitVal); - -  /// 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 Val) { isConstantGlobal = Val; } - -  /// If the value is "Thread Local", its value isn't shared by the threads. -  bool isThreadLocal() const { return threadLocalMode != NotThreadLocal; } -  void setThreadLocal(bool Val) { -    threadLocalMode = Val ? GeneralDynamicTLSModel : NotThreadLocal; -  } -  void setThreadLocalMode(ThreadLocalMode Val) { threadLocalMode = Val; } -  ThreadLocalMode getThreadLocalMode() const { -    return static_cast<ThreadLocalMode>(threadLocalMode); -  } - -  /// copyAttributesFrom - copy all additional attributes (those not needed to -  /// create a GlobalVariable) from the GlobalVariable Src to this one. -  void copyAttributesFrom(const GlobalValue *Src); - -  /// removeFromParent - This method unlinks 'this' from the containing module, -  /// but does not delete it. -  /// -  virtual void removeFromParent(); - -  /// eraseFromParent - This method unlinks 'this' from the containing module -  /// and deletes it. -  /// -  virtual void eraseFromParent(); - -  /// Override Constant's implementation of this method so we can -  /// replace constant initializers. -  virtual void replaceUsesOfWithOnConstant(Value *From, Value *To, Use *U); - -  // Methods for support type inquiry through isa, cast, and dyn_cast: -  static inline bool classof(const Value *V) { -    return V->getValueID() == Value::GlobalVariableVal; -  } -}; - -template <> -struct OperandTraits<GlobalVariable> : -  public OptionalOperandTraits<GlobalVariable> { -}; - -DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GlobalVariable, Value) - -} // End llvm namespace - -#endif | 
