GlobalObject.h revision c6a4f5e819217e1e12c458aed8e7b122e23a3a58 
1//===-- llvm/GlobalObject.h - Class to represent a global object *- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This represents an independent object. That is, a function or a global
11// variable, but not an alias.
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef LLVM_IR_GLOBALOBJECT_H
16#define LLVM_IR_GLOBALOBJECT_H
17
18#include "llvm/IR/Constant.h"
19#include "llvm/IR/DerivedTypes.h"
20#include "llvm/IR/GlobalValue.h"
21
22namespace llvm {
23class Comdat;
24class Module;
25
26class GlobalObject : public GlobalValue {
27  GlobalObject(const GlobalObject &) LLVM_DELETED_FUNCTION;
28
29protected:
30  GlobalObject(Type *Ty, ValueTy VTy, Use *Ops, unsigned NumOps,
31               LinkageTypes Linkage, const Twine &Name)
32      : GlobalValue(Ty, VTy, Ops, NumOps, Linkage, Name), ObjComdat(nullptr) {
33    setGlobalValueSubClassData(0);
34  }
35
36  std::string Section;     // Section to emit this into, empty means default
37  Comdat *ObjComdat;
38public:
39  unsigned getAlignment() const {
40    return (1u << getGlobalValueSubClassData()) >> 1;
41  }
42  void setAlignment(unsigned Align);
43
44  bool hasSection() const { return !StringRef(getSection()).empty(); }
45  const char *getSection() const { return Section.c_str(); }
46  void setSection(StringRef S);
47
48  bool hasComdat() const { return getComdat() != nullptr; }
49  const Comdat *getComdat() const { return ObjComdat; }
50  Comdat *getComdat() { return ObjComdat; }
51  void setComdat(Comdat *C) { ObjComdat = C; }
52
53  void copyAttributesFrom(const GlobalValue *Src) override;
54
55  // Methods for support type inquiry through isa, cast, and dyn_cast:
56  static inline bool classof(const Value *V) {
57    return V->getValueID() == Value::FunctionVal ||
58           V->getValueID() == Value::GlobalVariableVal;
59  }
60};
61
62} // End llvm namespace
63
64#endif
65