AppendingLinkage, ///< Special purpose, only applies to global arrays
InternalLinkage, ///< Rename collisions when linking (static functions).
PrivateLinkage, ///< Like Internal, but omit from symbol table.
- LinkerPrivateLinkage, ///< Like Private, but linker removes.
- LinkerPrivateWeakLinkage, ///< Like LinkerPrivate, but weak.
- DLLImportLinkage, ///< Function to be imported from DLL
- DLLExportLinkage, ///< Function to be accessible from DLL.
ExternalWeakLinkage,///< ExternalWeak linkage description.
CommonLinkage ///< Tentative definitions.
};
ProtectedVisibility ///< The GV is protected
};
+ /// @brief Storage classes of global values for PE targets.
+ enum DLLStorageClassTypes {
+ DefaultStorageClass = 0,
+ DLLImportStorageClass = 1, ///< Function to be imported from DLL
+ DLLExportStorageClass = 2 ///< Function to be accessible from DLL.
+ };
+
protected:
GlobalValue(Type *ty, ValueTy vty, Use *Ops, unsigned NumOps,
LinkageTypes linkage, const Twine &Name)
: Constant(ty, vty, Ops, NumOps), Linkage(linkage),
- Visibility(DefaultVisibility), Alignment(0), UnnamedAddr(0), Parent(0) {
+ Visibility(DefaultVisibility), Alignment(0), UnnamedAddr(0),
+ DllStorageClass(DefaultStorageClass), Parent(nullptr) {
setName(Name);
}
unsigned Visibility : 2; // The visibility style of this global
unsigned Alignment : 16; // Alignment of this symbol, must be power of two
unsigned UnnamedAddr : 1; // This value's address is not significant
+ unsigned DllStorageClass : 2; // DLL storage class
Module *Parent; // The containing module.
std::string Section; // Section to emit this into, empty mean default
public:
return Visibility == ProtectedVisibility;
}
void setVisibility(VisibilityTypes V) { Visibility = V; }
-
+
+ DLLStorageClassTypes getDLLStorageClass() const {
+ return DLLStorageClassTypes(DllStorageClass);
+ }
+ bool hasDLLImportStorageClass() const {
+ return DllStorageClass == DLLImportStorageClass;
+ }
+ bool hasDLLExportStorageClass() const {
+ return DllStorageClass == DLLExportStorageClass;
+ }
+ void setDLLStorageClass(DLLStorageClassTypes C) { DllStorageClass = C; }
+
bool hasSection() const { return !Section.empty(); }
const std::string &getSection() const { return Section; }
- void setSection(StringRef S) { Section = S; }
-
+ void setSection(StringRef S) {
+ assert((getValueID() != Value::GlobalAliasVal || S.empty()) &&
+ "GlobalAlias should not have a section!");
+ Section = S;
+ }
+
/// If the usage is empty (except transitively dead constants), then this
/// global value can be safely deleted since the destructor will
/// delete the dead constants as well.
static bool isPrivateLinkage(LinkageTypes Linkage) {
return Linkage == PrivateLinkage;
}
- static bool isLinkerPrivateLinkage(LinkageTypes Linkage) {
- return Linkage == LinkerPrivateLinkage;
- }
- static bool isLinkerPrivateWeakLinkage(LinkageTypes Linkage) {
- return Linkage == LinkerPrivateWeakLinkage;
- }
static bool isLocalLinkage(LinkageTypes Linkage) {
- return isInternalLinkage(Linkage) || isPrivateLinkage(Linkage) ||
- isLinkerPrivateLinkage(Linkage) || isLinkerPrivateWeakLinkage(Linkage);
- }
- static bool isDLLImportLinkage(LinkageTypes Linkage) {
- return Linkage == DLLImportLinkage;
- }
- static bool isDLLExportLinkage(LinkageTypes Linkage) {
- return Linkage == DLLExportLinkage;
+ return isInternalLinkage(Linkage) || isPrivateLinkage(Linkage);
}
static bool isExternalWeakLinkage(LinkageTypes Linkage) {
return Linkage == ExternalWeakLinkage;
/// by something non-equivalent at link time. For example, if a function has
/// weak linkage then the code defining it may be replaced by different code.
static bool mayBeOverridden(LinkageTypes Linkage) {
- return Linkage == WeakAnyLinkage ||
- Linkage == LinkOnceAnyLinkage ||
- Linkage == CommonLinkage ||
- Linkage == ExternalWeakLinkage ||
- Linkage == LinkerPrivateWeakLinkage;
+ return Linkage == WeakAnyLinkage || Linkage == LinkOnceAnyLinkage ||
+ Linkage == CommonLinkage || Linkage == ExternalWeakLinkage;
}
/// isWeakForLinker - Whether the definition of this global may be replaced at
/// always a mistake: when working at the IR level use mayBeOverridden instead
/// as it knows about ODR semantics.
static bool isWeakForLinker(LinkageTypes Linkage) {
- return Linkage == AvailableExternallyLinkage ||
- Linkage == WeakAnyLinkage ||
- Linkage == WeakODRLinkage ||
- Linkage == LinkOnceAnyLinkage ||
- Linkage == LinkOnceODRLinkage ||
- Linkage == CommonLinkage ||
- Linkage == ExternalWeakLinkage ||
- Linkage == LinkerPrivateWeakLinkage;
+ return Linkage == AvailableExternallyLinkage || Linkage == WeakAnyLinkage ||
+ Linkage == WeakODRLinkage || Linkage == LinkOnceAnyLinkage ||
+ Linkage == LinkOnceODRLinkage || Linkage == CommonLinkage ||
+ Linkage == ExternalWeakLinkage;
}
bool hasExternalLinkage() const { return isExternalLinkage(Linkage); }
bool hasAppendingLinkage() const { return isAppendingLinkage(Linkage); }
bool hasInternalLinkage() const { return isInternalLinkage(Linkage); }
bool hasPrivateLinkage() const { return isPrivateLinkage(Linkage); }
- bool hasLinkerPrivateLinkage() const { return isLinkerPrivateLinkage(Linkage); }
- bool hasLinkerPrivateWeakLinkage() const {
- return isLinkerPrivateWeakLinkage(Linkage);
- }
bool hasLocalLinkage() const { return isLocalLinkage(Linkage); }
- bool hasDLLImportLinkage() const { return isDLLImportLinkage(Linkage); }
- bool hasDLLExportLinkage() const { return isDLLExportLinkage(Linkage); }
bool hasExternalWeakLinkage() const { return isExternalWeakLinkage(Linkage); }
bool hasCommonLinkage() const { return isCommonLinkage(Linkage); }
/// Materialize - make sure this GlobalValue is fully read. If the module is
/// corrupt, this returns true and fills in the optional string with
/// information about the problem. If successful, this returns false.
- bool Materialize(std::string *ErrInfo = 0);
+ bool Materialize(std::string *ErrInfo = nullptr);
/// 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
/// @}
/// Override from Constant class.
- virtual void destroyConstant();
+ void destroyConstant() override;
/// isDeclaration - Return true if the primary definition of this global
/// value is outside of the current translation unit.
inline Module *getParent() { return Parent; }
inline const Module *getParent() const { return Parent; }
+ const DataLayout *getDataLayout() const;
+
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const Value *V) {
return V->getValueID() == Value::FunctionVal ||
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