PrivateLinkage, ///< Like Internal, but omit from symbol table.
LinkerPrivateLinkage, ///< Like Private, but linker removes.
LinkerPrivateWeakLinkage, ///< Like LinkerPrivate, but weak.
+ LinkerPrivateWeakDefAutoLinkage, ///< Like LinkerPrivateWeak, but possibly
+ /// hidden.
DLLImportLinkage, ///< Function to be imported from DLL
DLLExportLinkage, ///< Function to be accessible from DLL.
ExternalWeakLinkage,///< ExternalWeak linkage description.
GlobalValue(const Type *ty, ValueTy vty, Use *Ops, unsigned NumOps,
LinkageTypes linkage, const Twine &Name)
: Constant(ty, vty, Ops, NumOps), Parent(0),
- Linkage(linkage), Visibility(DefaultVisibility), Alignment(0) {
+ Linkage(linkage), Visibility(DefaultVisibility), Alignment(0),
+ UnnamedAddr(0) {
setName(Name);
}
LinkageTypes Linkage : 5; // The linkage of this global
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
std::string Section; // Section to emit this into, empty mean default
public:
~GlobalValue() {
}
void setAlignment(unsigned Align);
+ bool hasUnnamedAddr() const { return UnnamedAddr; }
+ void setUnnamedAddr(bool Val) { UnnamedAddr = Val; }
+
VisibilityTypes getVisibility() const { return VisibilityTypes(Visibility); }
bool hasDefaultVisibility() const { return Visibility == DefaultVisibility; }
bool hasHiddenVisibility() const { return Visibility == HiddenVisibility; }
static bool isLinkerPrivateWeakLinkage(LinkageTypes Linkage) {
return Linkage == LinkerPrivateWeakLinkage;
}
+ static bool isLinkerPrivateWeakDefAutoLinkage(LinkageTypes Linkage) {
+ return Linkage == LinkerPrivateWeakDefAutoLinkage;
+ }
static bool isLocalLinkage(LinkageTypes Linkage) {
return isInternalLinkage(Linkage) || isPrivateLinkage(Linkage) ||
- isLinkerPrivateLinkage(Linkage) || isLinkerPrivateWeakLinkage(Linkage);
+ isLinkerPrivateLinkage(Linkage) || isLinkerPrivateWeakLinkage(Linkage) ||
+ isLinkerPrivateWeakDefAutoLinkage(Linkage);
}
static bool isDLLImportLinkage(LinkageTypes Linkage) {
return Linkage == DLLImportLinkage;
/// 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 ||
+ Linkage == LinkerPrivateWeakLinkage ||
+ Linkage == LinkerPrivateWeakDefAutoLinkage;
}
/// isWeakForLinker - Whether the definition of this global may be replaced at
- /// link time.
+ /// link time. NB: Using this method outside of the code generators is almost
+ /// 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 ||
+ Linkage == LinkerPrivateWeakLinkage ||
+ Linkage == LinkerPrivateWeakDefAutoLinkage;
}
bool hasExternalLinkage() const { return isExternalLinkage(Linkage); }
bool hasLinkerPrivateWeakLinkage() const {
return isLinkerPrivateWeakLinkage(Linkage);
}
+ bool hasLinkerPrivateWeakDefAutoLinkage() const {
+ return isLinkerPrivateWeakDefAutoLinkage(Linkage);
+ }
bool hasLocalLinkage() const { return isLocalLinkage(Linkage); }
bool hasDLLImportLinkage() const { return isDLLImportLinkage(Linkage); }
bool hasDLLExportLinkage() const { return isDLLExportLinkage(Linkage); }