LLVM  3.7.0
Public Member Functions | Static Public Member Functions | Friends | List of all members
llvm::GlobalVariable Class Reference

#include <GlobalVariable.h>

Inheritance diagram for llvm::GlobalVariable:
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Collaboration diagram for llvm::GlobalVariable:
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Public Member Functions

void * operator new (size_t s)
 
 GlobalVariable (Type *Ty, bool isConstant, LinkageTypes Linkage, Constant *Initializer=nullptr, const Twine &Name="", ThreadLocalMode=NotThreadLocal, unsigned AddressSpace=0, bool isExternallyInitialized=false)
 GlobalVariable ctor - If a parent module is specified, the global is automatically inserted into the end of the specified modules global list. More...
 
 GlobalVariable (Module &M, Type *Ty, bool isConstant, LinkageTypes Linkage, Constant *Initializer, const Twine &Name="", GlobalVariable *InsertBefore=nullptr, ThreadLocalMode=NotThreadLocal, unsigned AddressSpace=0, bool isExternallyInitialized=false)
 GlobalVariable ctor - This creates a global and inserts it before the specified other global. More...
 
 ~GlobalVariable () override
 
 DECLARE_TRANSPARENT_OPERAND_ACCESSORS (Value)
 Provide fast operand accessors. More...
 
bool hasInitializer () const
 Definitions have initializers, declarations don't. More...
 
bool hasDefinitiveInitializer () const
 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. More...
 
bool hasUniqueInitializer () const
 hasUniqueInitializer - Whether the global variable has an initializer, and any changes made to the initializer will turn up in the final executable. More...
 
const ConstantgetInitializer () const
 getInitializer - Return the initializer for this global variable. More...
 
ConstantgetInitializer ()
 
void setInitializer (Constant *InitVal)
 setInitializer - Sets the initializer for this global variable, removing any existing initializer if InitVal==NULL. More...
 
bool isConstant () const
 If the value is a global constant, its value is immutable throughout the runtime execution of the program. More...
 
void setConstant (bool Val)
 
bool isExternallyInitialized () const
 
void setExternallyInitialized (bool Val)
 
void copyAttributesFrom (const GlobalValue *Src) override
 copyAttributesFrom - copy all additional attributes (those not needed to create a GlobalVariable) from the GlobalVariable Src to this one. More...
 
void removeFromParent () override
 removeFromParent - This method unlinks 'this' from the containing module, but does not delete it. More...
 
void eraseFromParent () override
 eraseFromParent - This method unlinks 'this' from the containing module and deletes it. More...
 
- Public Member Functions inherited from llvm::GlobalObject
unsigned getAlignment () const
 
void setAlignment (unsigned Align)
 
unsigned getGlobalObjectSubClassData () const
 
void setGlobalObjectSubClassData (unsigned Val)
 
bool hasSection () const
 
const char * getSection () const
 
void setSection (StringRef S)
 
bool hasComdat () const
 
const ComdatgetComdat () const
 
ComdatgetComdat ()
 
void setComdat (Comdat *C)
 
- Public Member Functions inherited from llvm::GlobalValue
 ~GlobalValue () override
 
unsigned getAlignment () const
 
bool hasUnnamedAddr () const
 
void setUnnamedAddr (bool Val)
 
bool hasComdat () const
 
ComdatgetComdat ()
 
const ComdatgetComdat () const
 
VisibilityTypes getVisibility () const
 
bool hasDefaultVisibility () const
 
bool hasHiddenVisibility () const
 
bool hasProtectedVisibility () const
 
void setVisibility (VisibilityTypes V)
 
bool isThreadLocal () const
 If the value is "Thread Local", its value isn't shared by the threads. More...
 
void setThreadLocal (bool Val)
 
void setThreadLocalMode (ThreadLocalMode Val)
 
ThreadLocalMode getThreadLocalMode () const
 
DLLStorageClassTypes getDLLStorageClass () const
 
bool hasDLLImportStorageClass () const
 
bool hasDLLExportStorageClass () const
 
void setDLLStorageClass (DLLStorageClassTypes C)
 
bool hasSection () const
 
const char * getSection () const
 
PointerTypegetType () const
 Global values are always pointers. More...
 
TypegetValueType () const
 
bool hasExternalLinkage () const
 
bool hasAvailableExternallyLinkage () const
 
bool hasLinkOnceLinkage () const
 
bool hasLinkOnceODRLinkage () const
 
bool hasWeakLinkage () const
 
bool hasWeakAnyLinkage () const
 
bool hasWeakODRLinkage () const
 
bool hasAppendingLinkage () const
 
bool hasInternalLinkage () const
 
bool hasPrivateLinkage () const
 
bool hasLocalLinkage () const
 
bool hasExternalWeakLinkage () const
 
bool hasCommonLinkage () const
 
void setLinkage (LinkageTypes LT)
 
LinkageTypes getLinkage () const
 
bool isDiscardableIfUnused () const
 
bool mayBeOverridden () const
 
bool isWeakForLinker () const
 
bool isDeclaration () const
 Return true if the primary definition of this global value is outside of the current translation unit. More...
 
bool isDeclarationForLinker () const
 
bool isStrongDefinitionForLinker () const
 Returns true if this global's definition will be the one chosen by the linker. More...
 
ModulegetParent ()
 Get the module that this global value is contained inside of... More...
 
const ModulegetParent () const
 
bool isMaterializable () const
 If this function's Module is being lazily streamed in functions from disk or some other source, this method can be used to check to see if the function has been read in yet or not. More...
 
bool isDematerializable () const
 Returns true if this function was loaded from a GVMaterializer that's still attached to its Module and that knows how to dematerialize the function. More...
 
std::error_code materialize ()
 Make sure this GlobalValue is fully read. More...
 
void dematerialize ()
 If this GlobalValue is read in, and if the GVMaterializer supports it, release the memory for the function, and set it up to be materialized lazily. More...
 
- Public Member Functions inherited from llvm::Constant
bool isNullValue () const
 isNullValue - Return true if this is the value that would be returned by getNullValue. More...
 
bool isOneValue () const
 Returns true if the value is one. More...
 
bool isAllOnesValue () const
 isAllOnesValue - Return true if this is the value that would be returned by getAllOnesValue. More...
 
bool isNegativeZeroValue () const
 isNegativeZeroValue - Return true if the value is what would be returned by getZeroValueForNegation. More...
 
bool isZeroValue () const
 Return true if the value is negative zero or null value. More...
 
bool isNotMinSignedValue () const
 Return true if the value is not the smallest signed value. More...
 
bool isMinSignedValue () const
 Return true if the value is the smallest signed value. More...
 
bool canTrap () const
 canTrap - Return true if evaluation of this constant could trap. More...
 
bool isThreadDependent () const
 isThreadDependent - Return true if the value can vary between threads. More...
 
bool isDLLImportDependent () const
 Return true if the value is dependent on a dllimport variable. More...
 
bool isConstantUsed () const
 isConstantUsed - Return true if the constant has users other than constant exprs and other dangling things. More...
 
PossibleRelocationsTy getRelocationInfo () const
 getRelocationInfo - This method classifies the entry according to whether or not it may generate a relocation entry. More...
 
ConstantgetAggregateElement (unsigned Elt) const
 getAggregateElement - For aggregates (struct/array/vector) return the constant that corresponds to the specified element if possible, or null if not. More...
 
ConstantgetAggregateElement (Constant *Elt) const
 
ConstantgetSplatValue () const
 getSplatValue - If this is a splat vector constant, meaning that all of the elements have the same value, return that value. More...
 
const APIntgetUniqueInteger () const
 If C is a constant integer then return its value, otherwise C must be a vector of constant integers, all equal, and the common value is returned. More...
 
void destroyConstant ()
 Called if some element of this constant is no longer valid. More...
 
void handleOperandChange (Value *, Value *, Use *)
 This method is a special form of User::replaceUsesOfWith (which does not work on constants) that does work on constants. More...
 
void removeDeadConstantUsers () const
 removeDeadConstantUsers - If there are any dead constant users dangling off of this constant, remove them. More...
 
ConstantstripPointerCasts ()
 
const ConstantstripPointerCasts () const
 
- Public Member Functions inherited from llvm::User
 ~User () override
 
void operator delete (void *Usr)
 Free memory allocated for User and Use objects. More...
 
void operator delete (void *, unsigned)
 Placement delete - required by std, but never called. More...
 
void operator delete (void *, unsigned, bool)
 Placement delete - required by std, but never called. More...
 
UsegetOperandList ()
 
const UsegetOperandList () const
 
ValuegetOperand (unsigned i) const
 
void setOperand (unsigned i, Value *Val)
 
const UsegetOperandUse (unsigned i) const
 
UsegetOperandUse (unsigned i)
 
unsigned getNumOperands () const
 
void setGlobalVariableNumOperands (unsigned NumOps)
 Set the number of operands on a GlobalVariable. More...
 
void setFunctionNumOperands (unsigned NumOps)
 Set the number of operands on a Function. More...
 
void setNumHungOffUseOperands (unsigned NumOps)
 Subclasses with hung off uses need to manage the operand count themselves. More...
 
op_iterator op_begin ()
 
const_op_iterator op_begin () const
 
op_iterator op_end ()
 
const_op_iterator op_end () const
 
op_range operands ()
 
const_op_range operands () const
 
value_op_iterator value_op_begin ()
 
value_op_iterator value_op_end ()
 
iterator_range< value_op_iteratoroperand_values ()
 
void dropAllReferences ()
 Drop all references to operands. More...
 
void replaceUsesOfWith (Value *From, Value *To)
 Replace uses of one Value with another. More...
 
- Public Member Functions inherited from llvm::Value
virtual ~Value ()
 
void dump () const
 Support for debugging, callable in GDB: V->dump() More...
 
TypegetType () const
 All values are typed, get the type of this value. More...
 
LLVMContextgetContext () const
 All values hold a context through their type. More...
 
bool hasName () const
 
ValueNamegetValueName () const
 
void setValueName (ValueName *VN)
 
StringRef getName () const
 Return a constant reference to the value's name. More...
 
void setName (const Twine &Name)
 Change the name of the value. More...
 
void takeName (Value *V)
 Transfer the name from V to this value. More...
 
void replaceAllUsesWith (Value *V)
 Change all uses of this to point to a new Value. More...
 
void replaceUsesOutsideBlock (Value *V, BasicBlock *BB)
 replaceUsesOutsideBlock - Go through the uses list for this definition and make each use point to "V" instead of "this" when the use is outside the block. More...
 
bool use_empty () const
 
use_iterator use_begin ()
 
const_use_iterator use_begin () const
 
use_iterator use_end ()
 
const_use_iterator use_end () const
 
iterator_range< use_iteratoruses ()
 
iterator_range
< const_use_iterator
uses () const
 
bool user_empty () const
 
user_iterator user_begin ()
 
const_user_iterator user_begin () const
 
user_iterator user_end ()
 
const_user_iterator user_end () const
 
Useruser_back ()
 
const Useruser_back () const
 
iterator_range< user_iteratorusers ()
 
iterator_range
< const_user_iterator
users () const
 
bool hasOneUse () const
 Return true if there is exactly one user of this value. More...
 
bool hasNUses (unsigned N) const
 Return true if this Value has exactly N users. More...
 
bool hasNUsesOrMore (unsigned N) const
 Return true if this value has N users or more. More...
 
bool isUsedInBasicBlock (const BasicBlock *BB) const
 Check if this value is used in the specified basic block. More...
 
unsigned getNumUses () const
 This method computes the number of uses of this Value. More...
 
void addUse (Use &U)
 This method should only be used by the Use class. More...
 
unsigned getValueID () const
 Return an ID for the concrete type of this object. More...
 
unsigned getRawSubclassOptionalData () const
 Return the raw optional flags value contained in this value. More...
 
void clearSubclassOptionalData ()
 Clear the optional flags contained in this value. More...
 
bool hasSameSubclassOptionalData (const Value *V) const
 Check the optional flags for equality. More...
 
void intersectOptionalDataWith (const Value *V)
 Clear any optional flags not set in the given Value. More...
 
bool hasValueHandle () const
 Return true if there is a value handle associated with this value. More...
 
bool isUsedByMetadata () const
 Return true if there is metadata referencing this value. More...
 
ValuestripPointerCasts ()
 Strip off pointer casts, all-zero GEPs, and aliases. More...
 
const ValuestripPointerCasts () const
 
ValuestripPointerCastsNoFollowAliases ()
 Strip off pointer casts and all-zero GEPs. More...
 
const ValuestripPointerCastsNoFollowAliases () const
 
ValuestripInBoundsConstantOffsets ()
 Strip off pointer casts and all-constant inbounds GEPs. More...
 
const ValuestripInBoundsConstantOffsets () const
 
ValuestripAndAccumulateInBoundsConstantOffsets (const DataLayout &DL, APInt &Offset)
 Accumulate offsets from stripInBoundsConstantOffsets(). More...
 
const ValuestripAndAccumulateInBoundsConstantOffsets (const DataLayout &DL, APInt &Offset) const
 
ValuestripInBoundsOffsets ()
 Strip off pointer casts and inbounds GEPs. More...
 
const ValuestripInBoundsOffsets () const
 
ValueDoPHITranslation (const BasicBlock *CurBB, const BasicBlock *PredBB)
 Translate PHI node to its predecessor from the given basic block. More...
 
const ValueDoPHITranslation (const BasicBlock *CurBB, const BasicBlock *PredBB) const
 
void mutateType (Type *Ty)
 Mutate the type of this Value to be of the specified type. More...
 
template<class Compare >
void sortUseList (Compare Cmp)
 Sort the use-list. More...
 
void reverseUseList ()
 Reverse the use-list. More...
 
void print (raw_ostream &O) const
 Implement operator<< on Value. More...
 
void print (raw_ostream &O, ModuleSlotTracker &MST) const
 
void printAsOperand (raw_ostream &O, bool PrintType=true, const Module *M=nullptr) const
 Print the name of this Value out to the specified raw_ostream. More...
 
void printAsOperand (raw_ostream &O, bool PrintType, ModuleSlotTracker &MST) const
 
- Public Member Functions inherited from llvm::ilist_node< GlobalVariable >
GlobalVariablegetPrevNode ()
 Get the previous node, or 0 for the list head. More...
 
const GlobalVariablegetPrevNode () const
 Get the previous node, or 0 for the list head. More...
 
GlobalVariablegetNextNode ()
 Get the next node, or 0 for the list tail. More...
 
const GlobalVariablegetNextNode () const
 Get the next node, or 0 for the list tail. More...
 

Static Public Member Functions

static bool classof (const Value *V)
 
- Static Public Member Functions inherited from llvm::GlobalObject
static bool classof (const Value *V)
 
- Static Public Member Functions inherited from llvm::GlobalValue
static LinkageTypes getLinkOnceLinkage (bool ODR)
 
static LinkageTypes getWeakLinkage (bool ODR)
 
static bool isExternalLinkage (LinkageTypes Linkage)
 
static bool isAvailableExternallyLinkage (LinkageTypes Linkage)
 
static bool isLinkOnceODRLinkage (LinkageTypes Linkage)
 
static bool isLinkOnceLinkage (LinkageTypes Linkage)
 
static bool isWeakAnyLinkage (LinkageTypes Linkage)
 
static bool isWeakODRLinkage (LinkageTypes Linkage)
 
static bool isWeakLinkage (LinkageTypes Linkage)
 
static bool isAppendingLinkage (LinkageTypes Linkage)
 
static bool isInternalLinkage (LinkageTypes Linkage)
 
static bool isPrivateLinkage (LinkageTypes Linkage)
 
static bool isLocalLinkage (LinkageTypes Linkage)
 
static bool isExternalWeakLinkage (LinkageTypes Linkage)
 
static bool isCommonLinkage (LinkageTypes Linkage)
 
static bool isDiscardableIfUnused (LinkageTypes Linkage)
 Whether the definition of this global may be discarded if it is not used in its compilation unit. More...
 
static bool mayBeOverridden (LinkageTypes Linkage)
 Whether the definition of this global may be replaced by something non-equivalent at link time. More...
 
static bool isWeakForLinker (LinkageTypes Linkage)
 Whether the definition of this global may be replaced at link time. More...
 
static StringRef getRealLinkageName (StringRef Name)
 If special LLVM prefix that is used to inform the asm printer to not emit usual symbol prefix before the symbol name is used then return linkage name after skipping this special LLVM prefix. More...
 
static bool classof (const Value *V)
 
- Static Public Member Functions inherited from llvm::Constant
static bool classof (const Value *V)
 
static ConstantgetNullValue (Type *Ty)
 
static ConstantgetAllOnesValue (Type *Ty)
 Get the all ones value. More...
 
static ConstantgetIntegerValue (Type *Ty, const APInt &V)
 getIntegerValue - Return the value for an integer or pointer constant, or a vector thereof, with the given scalar value. More...
 
- Static Public Member Functions inherited from llvm::User
static bool classof (const Value *V)
 

Friends

class SymbolTableListTraits< GlobalVariable, Module >
 

Additional Inherited Members

- Public Types inherited from llvm::GlobalValue
enum  LinkageTypes {
  ExternalLinkage = 0, AvailableExternallyLinkage, LinkOnceAnyLinkage, LinkOnceODRLinkage,
  WeakAnyLinkage, WeakODRLinkage, AppendingLinkage, InternalLinkage,
  PrivateLinkage, ExternalWeakLinkage, CommonLinkage
}
 An enumeration for the kinds of linkage for global values. More...
 
enum  VisibilityTypes { DefaultVisibility = 0, HiddenVisibility, ProtectedVisibility }
 An enumeration for the kinds of visibility of global values. More...
 
enum  DLLStorageClassTypes { DefaultStorageClass = 0, DLLImportStorageClass = 1, DLLExportStorageClass = 2 }
 Storage classes of global values for PE targets. More...
 
enum  ThreadLocalMode {
  NotThreadLocal = 0, GeneralDynamicTLSModel, LocalDynamicTLSModel, InitialExecTLSModel,
  LocalExecTLSModel
}
 
- Public Types inherited from llvm::Constant
enum  PossibleRelocationsTy { NoRelocation = 0, LocalRelocation = 1, GlobalRelocations = 2 }
 
- Public Types inherited from llvm::User
typedef Useop_iterator
 
typedef const Useconst_op_iterator
 
typedef iterator_range
< op_iterator
op_range
 
typedef iterator_range
< const_op_iterator
const_op_range
 
- Public Types inherited from llvm::Value
enum  ValueTy
 Concrete subclass of this. More...
 
typedef use_iterator_impl< Useuse_iterator
 
typedef use_iterator_impl
< const Use
const_use_iterator
 
typedef user_iterator_impl< Useruser_iterator
 
typedef user_iterator_impl
< const User
const_user_iterator
 
- Static Public Attributes inherited from llvm::Value
static const unsigned MaxAlignmentExponent = 29
 The maximum alignment for instructions. More...
 
static const unsigned MaximumAlignment = 1u << MaxAlignmentExponent
 
- Protected Types inherited from llvm::Value
enum  : unsigned { NumUserOperandsBits = 29 }
 The number of operands in the subclass. More...
 
- Protected Member Functions inherited from llvm::GlobalObject
 GlobalObject (PointerType *Ty, ValueTy VTy, Use *Ops, unsigned NumOps, LinkageTypes Linkage, const Twine &Name)
 
- Protected Member Functions inherited from llvm::GlobalValue
 GlobalValue (PointerType *Ty, ValueTy VTy, Use *Ops, unsigned NumOps, LinkageTypes Linkage, const Twine &Name)
 
unsigned getGlobalValueSubClassData () const
 
void setGlobalValueSubClassData (unsigned V)
 
- Protected Member Functions inherited from llvm::Constant
 Constant (Type *ty, ValueTy vty, Use *Ops, unsigned NumOps)
 
- Protected Member Functions inherited from llvm::User
void * operator new (size_t Size)
 Allocate a User with an operand pointer co-allocated. More...
 
void * operator new (size_t Size, unsigned Us)
 Allocate a User with the operands co-allocated. More...
 
 User (Type *ty, unsigned vty, Use *OpList, unsigned NumOps)
 
void allocHungoffUses (unsigned N, bool IsPhi=false)
 Allocate the array of Uses, followed by a pointer (with bottom bit set) to the User. More...
 
void growHungoffUses (unsigned N, bool IsPhi=false)
 Grow the number of hung off uses. More...
 
template<int Idx>
UseOp ()
 
template<int Idx>
const UseOp () const
 
- Protected Member Functions inherited from llvm::Value
 Value (Type *Ty, unsigned scid)
 
unsigned short getSubclassDataFromValue () const
 
void setValueSubclassData (unsigned short D)
 
- Protected Member Functions inherited from llvm::ilist_node< GlobalVariable >
 ilist_node ()
 
- Static Protected Member Functions inherited from llvm::User
template<int Idx, typename U >
static UseOpFrom (const U *that)
 
- Protected Attributes inherited from llvm::GlobalObject
std::string Section
 
ComdatObjComdat
 
- Protected Attributes inherited from llvm::GlobalValue
LinkageTypes Linkage: 5
 
unsigned Visibility: 2
 
unsigned UnnamedAddr: 1
 
unsigned DllStorageClass: 2
 
unsigned ThreadLocal: 3
 
Intrinsic::ID IntID
 The intrinsic ID for this subclass (which must be a Function). More...
 
ModuleParent
 
- Protected Attributes inherited from llvm::Value
unsigned char SubclassOptionalData: 7
 Hold subclass data that can be dropped. More...
 
unsigned NumUserOperands: NumUserOperandsBits
 
bool IsUsedByMD: 1
 
bool HasName: 1
 
bool HasHungOffUses: 1
 
- Static Protected Attributes inherited from llvm::GlobalObject
static const unsigned AlignmentBits = 5
 
static const unsigned GlobalObjectSubClassDataBits
 
- Static Protected Attributes inherited from llvm::GlobalValue
static const unsigned GlobalValueSubClassDataBits = 19
 

Detailed Description

Definition at line 35 of file GlobalVariable.h.

Constructor & Destructor Documentation

GlobalVariable::GlobalVariable ( Type Ty,
bool  isConstant,
LinkageTypes  Linkage,
Constant Initializer = nullptr,
const Twine Name = "",
ThreadLocalMode  TLMode = NotThreadLocal,
unsigned  AddressSpace = 0,
bool  isExternallyInitialized = false 
)

GlobalVariable ctor - If a parent module is specified, the global is automatically inserted into the end of the specified modules global list.

Definition at line 146 of file Globals.cpp.

References llvm::Value::getType(), and llvm::GlobalValue::setThreadLocalMode().

GlobalVariable::GlobalVariable ( Module M,
Type Ty,
bool  isConstant,
LinkageTypes  Linkage,
Constant Initializer,
const Twine Name = "",
GlobalVariable InsertBefore = nullptr,
ThreadLocalMode  TLMode = NotThreadLocal,
unsigned  AddressSpace = 0,
bool  isExternallyInitialized = false 
)
llvm::GlobalVariable::~GlobalVariable ( )
inlineoverride

Definition at line 68 of file GlobalVariable.h.

References llvm::User::setGlobalVariableNumOperands().

Member Function Documentation

static bool llvm::GlobalVariable::classof ( const Value V)
inlinestatic

Definition at line 169 of file GlobalVariable.h.

References llvm::Value::getValueID().

void GlobalVariable::copyAttributesFrom ( const GlobalValue Src)
overridevirtual

copyAttributesFrom - copy all additional attributes (those not needed to create a GlobalVariable) from the GlobalVariable Src to this one.

Reimplemented from llvm::GlobalObject.

Definition at line 221 of file Globals.cpp.

References llvm::GlobalObject::copyAttributesFrom(), llvm::GlobalValue::getThreadLocalMode(), isExternallyInitialized(), setExternallyInitialized(), and llvm::GlobalValue::setThreadLocalMode().

Referenced by llvm::orc::cloneGlobalVariableDecl(), llvm::CloneModule(), INITIALIZE_PASS(), and upgradeGlobalArray().

llvm::GlobalVariable::DECLARE_TRANSPARENT_OPERAND_ACCESSORS ( Value  )

Provide fast operand accessors.

void GlobalVariable::eraseFromParent ( )
overridevirtual
const Constant* llvm::GlobalVariable::getInitializer ( ) const
inline
Constant* llvm::GlobalVariable::getInitializer ( )
inline

Definition at line 131 of file GlobalVariable.h.

References hasInitializer().

bool llvm::GlobalVariable::hasDefinitiveInitializer ( ) const
inline

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:

= global SomeType* null - Initializer is both definitive and unique.

= global weak SomeType* null - Initializer is neither definitive nor unique.

= global weak_odr SomeType* null - Initializer is definitive, but not unique.

Definition at line 96 of file GlobalVariable.h.

References hasInitializer(), isExternallyInitialized(), and llvm::GlobalValue::mayBeOverridden().

Referenced by FoldReinterpretLoadFromConstPtr(), llvm::getConstantStringInfo(), and llvm::ObjectSizeOffsetVisitor::visitGlobalVariable().

bool llvm::GlobalVariable::hasInitializer ( ) const
inline
bool llvm::GlobalVariable::hasUniqueInitializer ( ) const
inline

hasUniqueInitializer - Whether the global variable has an initializer, and any changes made to the initializer will turn up in the final executable.

Definition at line 108 of file GlobalVariable.h.

References hasInitializer(), isExternallyInitialized(), and llvm::GlobalValue::isWeakForLinker().

Referenced by isSimpleEnoughPointerToCommit().

bool llvm::GlobalVariable::isConstant ( ) const
inline

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.

Definition at line 144 of file GlobalVariable.h.

Referenced by AnalyzeLoadFromClobberingMemInst(), CleanupPointerRootUsers(), llvm::orc::cloneGlobalVariableDecl(), copyGlobalVariableProto(), FoldReinterpretLoadFromConstPtr(), llvm::getConstantStringInfo(), llvm::TargetLoweringObjectFile::getKindForGlobal(), INITIALIZE_PASS(), isGOTEquivalentCandidate(), isSuitableForBSS(), SRAGlobal(), and upgradeGlobalArray().

bool llvm::GlobalVariable::isExternallyInitialized ( ) const
inline
void* llvm::GlobalVariable::operator new ( size_t  s)
inline

Definition at line 50 of file GlobalVariable.h.

void GlobalVariable::removeFromParent ( )
overridevirtual

removeFromParent - This method unlinks 'this' from the containing module, but does not delete it.

Implements llvm::GlobalValue.

Definition at line 190 of file Globals.cpp.

References llvm::Module::getGlobalList(), llvm::GlobalValue::getParent(), and llvm::iplist< NodeTy, Traits >::remove().

Referenced by setUsedInitializer().

void llvm::GlobalVariable::setConstant ( bool  Val)
inline

Definition at line 145 of file GlobalVariable.h.

Referenced by EvaluateStaticConstructor().

void llvm::GlobalVariable::setExternallyInitialized ( bool  Val)
inline

Definition at line 150 of file GlobalVariable.h.

Referenced by copyAttributesFrom().

void GlobalVariable::setInitializer ( Constant InitVal)

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.

Definition at line 198 of file Globals.cpp.

References llvm::SequentialType::getElementType(), llvm::GlobalValue::getType(), llvm::Value::getType(), hasInitializer(), and llvm::User::setGlobalVariableNumOperands().

Referenced by llvm::CloneModule(), CommitValueTo(), and llvm::orc::moveGlobalVariableInitializer().

Friends And Related Function Documentation

friend class SymbolTableListTraits< GlobalVariable, Module >
friend

Definition at line 36 of file GlobalVariable.h.


The documentation for this class was generated from the following files: