//
// 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 is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
DLLImportLinkage, ///< Function to be imported from DLL
DLLExportLinkage, ///< Function to be accessible from DLL
ExternalWeakLinkage,///< ExternalWeak linkage description
- GhostLinkage ///< Stand-in functions for streaming fns from BC files
+ GhostLinkage, ///< Stand-in functions for streaming fns from BC files
+ CommonLinkage ///< Tentative definitions
};
/// @brief An enumeration for the kinds of visibility of global values.
};
protected:
- GlobalValue(const Type *Ty, ValueTy vty, Use *Ops, unsigned NumOps,
+ GlobalValue(const Type *ty, ValueTy vty, Use *Ops, unsigned NumOps,
LinkageTypes linkage, const std::string &name = "")
- : Constant(Ty, vty, Ops, NumOps), Parent(0),
+ : Constant(ty, vty, Ops, NumOps), Parent(0),
Linkage(linkage), Visibility(DefaultVisibility), Alignment(0) {
if (!name.empty()) setName(name);
}
Alignment = Align;
}
- VisibilityTypes getVisibility() const { return (VisibilityTypes)Visibility; }
+ VisibilityTypes getVisibility() const { return VisibilityTypes(Visibility); }
bool hasHiddenVisibility() const { return Visibility == HiddenVisibility; }
bool hasProtectedVisibility() const {
return Visibility == ProtectedVisibility;
bool hasExternalLinkage() const { return Linkage == ExternalLinkage; }
bool hasLinkOnceLinkage() const { return Linkage == LinkOnceLinkage; }
bool hasWeakLinkage() const { return Linkage == WeakLinkage; }
+ bool hasCommonLinkage() const { return Linkage == CommonLinkage; }
bool hasAppendingLinkage() const { return Linkage == AppendingLinkage; }
bool hasInternalLinkage() const { return Linkage == InternalLinkage; }
bool hasDLLImportLinkage() const { return Linkage == DLLImportLinkage; }
bool hasDLLExportLinkage() const { return Linkage == DLLExportLinkage; }
bool hasExternalWeakLinkage() const { return Linkage == ExternalWeakLinkage; }
+ bool hasGhostLinkage() const { return Linkage == GhostLinkage; }
void setLinkage(LinkageTypes LT) { Linkage = LT; }
LinkageTypes getLinkage() const { return Linkage; }
+ /// mayBeOverridden - Whether the definition of this global may be replaced
+ /// at link time. For example, if a function has weak linkage then the code
+ /// defining it may be replaced by different code.
+ bool mayBeOverridden() const {
+ return (Linkage == WeakLinkage ||
+ Linkage == LinkOnceLinkage ||
+ Linkage == CommonLinkage ||
+ Linkage == ExternalWeakLinkage);
+ }
+
+ /// copyAttributesFrom - copy all additional attributes (those not needed to
+ /// create a GlobalValue) from the GlobalValue Src to this one.
+ virtual void copyAttributesFrom(const GlobalValue *Src);
+
/// hasNotBeenReadFromBitcode - If a module provider is being used to lazily
/// stream in functions from disk, this method can be used to check to see if
/// the function has been read in yet or not. Unless you are working on the
/// value is outside of the current translation unit...
virtual bool isDeclaration() const = 0;
+ /// removeFromParent - This method unlinks 'this' from the containing module,
+ /// but does not delete it.
+ virtual void removeFromParent() = 0;
+
+ /// eraseFromParent - This method unlinks 'this' from the containing module
+ /// and deletes it.
+ virtual void eraseFromParent() = 0;
+
/// getParent - Get the module that this global value is contained inside
/// of...
inline Module *getParent() { return Parent; }