95 lines
3.1 KiB
C
95 lines
3.1 KiB
C
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//===- llvm/GlobalIndirectSymbol.h - GlobalIndirectSymbol class -*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the declaration of the GlobalIndirectSymbol class, which
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// is a base class for GlobalAlias and GlobalIFunc. It contains all common code
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// for aliases and ifuncs.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IR_GLOBALINDIRECTSYMBOL_H
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#define LLVM_IR_GLOBALINDIRECTSYMBOL_H
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#include "llvm/IR/GlobalObject.h"
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#include "llvm/IR/GlobalValue.h"
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#include "llvm/IR/OperandTraits.h"
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#include "llvm/IR/User.h"
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#include "llvm/IR/Value.h"
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#include "llvm/Support/Casting.h"
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#include <cstddef>
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namespace llvm {
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class GlobalIndirectSymbol : public GlobalValue {
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protected:
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GlobalIndirectSymbol(Type *Ty, ValueTy VTy, unsigned AddressSpace,
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LinkageTypes Linkage, const Twine &Name, Constant *Symbol);
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public:
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GlobalIndirectSymbol(const GlobalIndirectSymbol &) = delete;
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GlobalIndirectSymbol &operator=(const GlobalIndirectSymbol &) = delete;
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// allocate space for exactly one operand
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void *operator new(size_t s) {
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return User::operator new(s, 1);
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}
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/// Provide fast operand accessors
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DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant);
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void copyAttributesFrom(const GlobalValue *Src) {
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GlobalValue::copyAttributesFrom(Src);
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}
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/// These methods set and retrieve indirect symbol.
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void setIndirectSymbol(Constant *Symbol) {
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setOperand(0, Symbol);
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}
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const Constant *getIndirectSymbol() const {
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return getOperand(0);
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}
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Constant *getIndirectSymbol() {
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return const_cast<Constant *>(
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static_cast<const GlobalIndirectSymbol *>(this)->getIndirectSymbol());
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}
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const GlobalObject *getBaseObject() const;
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GlobalObject *getBaseObject() {
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return const_cast<GlobalObject *>(
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static_cast<const GlobalIndirectSymbol *>(this)->getBaseObject());
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}
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const GlobalObject *getBaseObject(const DataLayout &DL, APInt &Offset) const {
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return dyn_cast<GlobalObject>(
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getIndirectSymbol()->stripAndAccumulateInBoundsConstantOffsets(DL,
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Offset));
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}
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GlobalObject *getBaseObject(const DataLayout &DL, APInt &Offset) {
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return const_cast<GlobalObject *>(
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static_cast<const GlobalIndirectSymbol *>(this)
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->getBaseObject(DL, Offset));
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}
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// Methods for support type inquiry through isa, cast, and dyn_cast:
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static bool classof(const Value *V) {
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return V->getValueID() == Value::GlobalAliasVal ||
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V->getValueID() == Value::GlobalIFuncVal;
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}
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};
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template <>
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struct OperandTraits<GlobalIndirectSymbol> :
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public FixedNumOperandTraits<GlobalIndirectSymbol, 1> {
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};
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DEFINE_TRANSPARENT_OPERAND_ACCESSORS(GlobalIndirectSymbol, Constant)
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} // end namespace llvm
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#endif // LLVM_IR_GLOBALINDIRECTSYMBOL_H
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