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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1503 91177308-0d34-0410-b5e6-96231b3b80d8
51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
//===-- llvm/GlobalValue.h - Class to represent a global value ---*- C++ -*--=//
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//
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// This file is a common base class of all globally definable objects. As such,
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// it is subclassed by GlobalVariable and by Method. This is used because you
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// can do certain things with these global objects that you can't do to anything
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// else. For example, use the address of one as a constant.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_GLOBALVALUE_H
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#define LLVM_GLOBALVALUE_H
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#include "llvm/User.h"
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class PointerType;
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class GlobalValue : public User {
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GlobalValue(const GlobalValue &); // do not implement
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protected:
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GlobalValue(const Type *Ty, ValueTy vty, bool hasInternalLinkage,
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const std::string &name = "")
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: User(Ty, vty, name), HasInternalLinkage(hasInternalLinkage), Parent(0) {}
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bool HasInternalLinkage; // Is this value accessable externally?
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Module *Parent;
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public:
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~GlobalValue() {}
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// getType - Global values are always pointers.
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inline const PointerType *getType() const {
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return (const PointerType*)User::getType();
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}
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// Internal Linkage - True if the global value is inaccessible to
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bool hasInternalLinkage() const { return HasInternalLinkage; }
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bool hasExternalLinkage() const { return !HasInternalLinkage; }
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void setInternalLinkage(bool HIL) { HasInternalLinkage = HIL; }
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// Get the module that this global value is contained inside of...
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inline Module *getParent() { return Parent; }
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inline const Module *getParent() const { return Parent; }
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const GlobalValue *T) { return true; }
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static inline bool classof(const Value *V) {
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return V->getValueType() == Value::MethodVal ||
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V->getValueType() == Value::GlobalVariableVal;
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}
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};
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#endif
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