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68b02dcd54
To do this, change the representation of lazy loaded functions. The previous representation cannot differentiate between a function whose body has been removed and one whose body hasn't been read from the .bc file. That means that in order to drop a function, the entire body had to be read. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220580 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
2.4 KiB
C++
77 lines
2.4 KiB
C++
//===-- llvm/GlobalObject.h - Class to represent a global object *- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This represents an independent object. That is, a function or a global
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// variable, but not an alias.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IR_GLOBALOBJECT_H
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#define LLVM_IR_GLOBALOBJECT_H
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#include "llvm/IR/Constant.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/GlobalValue.h"
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namespace llvm {
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class Comdat;
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class Module;
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class GlobalObject : public GlobalValue {
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GlobalObject(const GlobalObject &) LLVM_DELETED_FUNCTION;
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protected:
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GlobalObject(Type *Ty, ValueTy VTy, Use *Ops, unsigned NumOps,
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LinkageTypes Linkage, const Twine &Name)
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: GlobalValue(Ty, VTy, Ops, NumOps, Linkage, Name), ObjComdat(nullptr) {
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setGlobalValueSubClassData(0);
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}
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std::string Section; // Section to emit this into, empty means default
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Comdat *ObjComdat;
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static const unsigned AlignmentBits = 5;
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static const unsigned GlobalObjectSubClassDataBits =
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GlobalValueSubClassDataBits - AlignmentBits;
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private:
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static const unsigned AlignmentMask = (1 << AlignmentBits) - 1;
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public:
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unsigned getAlignment() const {
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unsigned Data = getGlobalValueSubClassData();
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unsigned AlignmentData = Data & AlignmentMask;
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return (1u << AlignmentData) >> 1;
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}
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void setAlignment(unsigned Align);
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unsigned getGlobalObjectSubClassData() const;
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void setGlobalObjectSubClassData(unsigned Val);
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bool hasSection() const { return !StringRef(getSection()).empty(); }
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const char *getSection() const { return Section.c_str(); }
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void setSection(StringRef S);
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bool hasComdat() const { return getComdat() != nullptr; }
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const Comdat *getComdat() const { return ObjComdat; }
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Comdat *getComdat() { return ObjComdat; }
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void setComdat(Comdat *C) { ObjComdat = C; }
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void copyAttributesFrom(const GlobalValue *Src) override;
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static inline bool classof(const Value *V) {
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return V->getValueID() == Value::FunctionVal ||
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V->getValueID() == Value::GlobalVariableVal;
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}
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};
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} // End llvm namespace
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#endif
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