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//===-- llvm/GlobalObject.h - Class to represent global objects -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This represents an independent object. That is, a function or a global
// variable, but not an alias.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_IR_GLOBALOBJECT_H
#define LLVM_IR_GLOBALOBJECT_H
#include "llvm/IR/Constant.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/GlobalValue.h"
namespace llvm {
class Comdat;
class Module;
class GlobalObject : public GlobalValue {
GlobalObject(const GlobalObject &) = delete;
protected:
GlobalObject(Type *Ty, ValueTy VTy, Use *Ops, unsigned NumOps,
LinkageTypes Linkage, const Twine &Name)
: GlobalValue(Ty, VTy, Ops, NumOps, Linkage, Name), ObjComdat(nullptr) {
setGlobalValueSubClassData(0);
}
std::string Section; // Section to emit this into, empty means default
Comdat *ObjComdat;
static const unsigned AlignmentBits = 5;
static const unsigned GlobalObjectSubClassDataBits =
GlobalValueSubClassDataBits - AlignmentBits;
private:
static const unsigned AlignmentMask = (1 << AlignmentBits) - 1;
public:
unsigned getAlignment() const {
unsigned Data = getGlobalValueSubClassData();
unsigned AlignmentData = Data & AlignmentMask;
return (1u << AlignmentData) >> 1;
}
void setAlignment(unsigned Align);
unsigned getGlobalObjectSubClassData() const;
void setGlobalObjectSubClassData(unsigned Val);
bool hasSection() const { return !StringRef(getSection()).empty(); }
const char *getSection() const { return Section.c_str(); }
void setSection(StringRef S);
bool hasComdat() const { return getComdat() != nullptr; }
const Comdat *getComdat() const { return ObjComdat; }
Comdat *getComdat() { return ObjComdat; }
void setComdat(Comdat *C) { ObjComdat = C; }
void copyAttributesFrom(const GlobalValue *Src) override;
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const Value *V) {
return V->getValueID() == Value::FunctionVal ||
V->getValueID() == Value::GlobalVariableVal;
}
};
} // End llvm namespace
#endif
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