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📄 AbstractCallSite.h(9.5 KB)
📄 Argument.h(5.03 KB)
📄 AssemblyAnnotationWriter.h(2.2 KB)
📄 Attributes.h(35.5 KB)
📄 Attributes.td(8.96 KB)
📄 AutoUpgrade.h(3.96 KB)
📄 BasicBlock.h(21.91 KB)
📄 CFG.h(13.84 KB)
📄 CallingConv.h(9.27 KB)
📄 Comdat.h(2.16 KB)
📄 Constant.h(8.33 KB)
📄 ConstantFolder.h(10.01 KB)
📄 ConstantRange.h(21.6 KB)
📄 Constants.h(53.03 KB)
📄 ConstrainedOps.def(5.4 KB)
📄 DIBuilder.h(44.36 KB)
📄 DataLayout.h(24.11 KB)
📄 DebugInfo.h(5.42 KB)
📄 DebugInfoFlags.def(3.62 KB)
📄 DebugInfoMetadata.h(132.91 KB)
📄 DebugLoc.h(4.57 KB)
📄 DerivedTypes.h(26.81 KB)
📄 DerivedUser.h(1.32 KB)
📄 DiagnosticHandler.h(2.89 KB)
📄 DiagnosticInfo.h(41.02 KB)
📄 DiagnosticPrinter.h(3.46 KB)
📄 Dominators.h(9.94 KB)
📄 FPEnv.h(1.97 KB)
📄 FixedMetadataKinds.def(2.05 KB)
📄 Function.h(31.39 KB)
📄 GVMaterializer.h(1.45 KB)
📄 GetElementPtrTypeIterator.h(5.54 KB)
📄 GlobalAlias.h(3.16 KB)
📄 GlobalIFunc.h(2.51 KB)
📄 GlobalIndirectSymbol.h(3.11 KB)
📄 GlobalObject.h(7.39 KB)
📄 GlobalValue.h(21.2 KB)
📄 GlobalVariable.h(9.6 KB)
📄 IRBuilder.h(105.58 KB)
📄 IRBuilderFolder.h(7.1 KB)
📄 IRPrintingPasses.h(3.57 KB)
📄 InlineAsm.h(15.84 KB)
📄 InstIterator.h(5.06 KB)
📄 InstVisitor.h(13.95 KB)
📄 InstrTypes.h(86.25 KB)
📄 Instruction.def(8.53 KB)
📄 Instruction.h(30.74 KB)
📄 Instructions.h(195.68 KB)
📄 IntrinsicInst.h(29.03 KB)
📄 Intrinsics.h(8.21 KB)
📄 Intrinsics.td(78.88 KB)
📄 IntrinsicsAArch64.td(100.59 KB)
📄 IntrinsicsAMDGPU.td(80.43 KB)
📄 IntrinsicsARM.td(65.15 KB)
📄 IntrinsicsBPF.td(1.54 KB)
📄 IntrinsicsHexagon.td(11.53 KB)
📄 IntrinsicsHexagonDep.td(197.38 KB)
📄 IntrinsicsMips.td(94.94 KB)
📄 IntrinsicsNVVM.td(193.97 KB)
📄 IntrinsicsPowerPC.td(68.23 KB)
📄 IntrinsicsRISCV.td(3.24 KB)
📄 IntrinsicsSystemZ.td(18.56 KB)
📄 IntrinsicsWebAssembly.td(9.38 KB)
📄 IntrinsicsX86.td(242.99 KB)
📄 IntrinsicsXCore.td(6.83 KB)
📄 LLVMContext.h(14.18 KB)
📄 LLVMRemarkStreamer.h(3.36 KB)
📄 LegacyPassManager.h(3.11 KB)
📄 LegacyPassManagers.h(18.17 KB)
📄 LegacyPassNameParser.h(3.73 KB)
📄 MDBuilder.h(8.65 KB)
📄 Mangler.h(2.06 KB)
📄 MatrixBuilder.h(8.81 KB)
📄 Metadata.def(5.07 KB)
📄 Metadata.h(45.24 KB)
📄 Module.h(34.6 KB)
📄 ModuleSlotTracker.h(2.56 KB)
📄 ModuleSummaryIndex.h(58.12 KB)
📄 ModuleSummaryIndexYAML.h(10.93 KB)
📄 NoFolder.h(11.32 KB)
📄 OperandTraits.h(5.78 KB)
📄 Operator.h(19.58 KB)
📄 OptBisect.h(2.79 KB)
📄 PassInstrumentation.h(8.05 KB)
📄 PassManager.h(54.18 KB)
📄 PassManagerImpl.h(5.76 KB)
📄 PassManagerInternal.h(11.9 KB)
📄 PassTimingInfo.h(3.65 KB)
📄 PatternMatch.h(73.41 KB)
📄 PredIteratorCache.h(2.59 KB)
📄 ProfileSummary.h(4.34 KB)
📄 RuntimeLibcalls.def(24.52 KB)
📄 SafepointIRVerifier.h(1.63 KB)
📄 Statepoint.h(13.61 KB)
📄 SymbolTableListTraits.h(4.45 KB)
📄 TrackingMDRef.h(4.5 KB)
📄 Type.h(18.98 KB)
📄 TypeFinder.h(2.57 KB)
📄 Use.h(3.75 KB)
📄 UseListOrder.h(1.18 KB)
📄 User.h(11.75 KB)
📄 VPIntrinsics.def(2.34 KB)
📄 Value.def(3.62 KB)
📄 Value.h(32.16 KB)
📄 ValueHandle.h(18.11 KB)
📄 ValueMap.h(14.09 KB)
📄 ValueSymbolTable.h(4.22 KB)
📄 Verifier.h(5.47 KB)

Editing: GlobalObject.h

//===-- llvm/GlobalObject.h - Class to represent global objects -*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// 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/ADT/StringRef.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/Value.h"
#include "llvm/Support/Alignment.h"
#include <string>
#include <utility>

namespace llvm {

class Comdat;
class MDNode;
class Metadata;

class GlobalObject : public GlobalValue {
public:
  // VCallVisibility - values for visibility metadata attached to vtables. This
  // describes the scope in which a virtual call could end up being dispatched
  // through this vtable.
  enum VCallVisibility {
    // Type is potentially visible to external code.
    VCallVisibilityPublic = 0,
    // Type is only visible to code which will be in the current Module after
    // LTO internalization.
    VCallVisibilityLinkageUnit = 1,
    // Type is only visible to code in the current Module.
    VCallVisibilityTranslationUnit = 2,
  };

protected:
  GlobalObject(Type *Ty, ValueTy VTy, Use *Ops, unsigned NumOps,
               LinkageTypes Linkage, const Twine &Name,
               unsigned AddressSpace = 0)
      : GlobalValue(Ty, VTy, Ops, NumOps, Linkage, Name, AddressSpace),
        ObjComdat(nullptr) {
    setGlobalValueSubClassData(0);
  }

Comdat *ObjComdat;
  enum {
    LastAlignmentBit = 4,
    HasMetadataHashEntryBit,
    HasSectionHashEntryBit,

GlobalObjectBits,
  };
  static const unsigned GlobalObjectSubClassDataBits =
      GlobalValueSubClassDataBits - GlobalObjectBits;

private:
  static const unsigned AlignmentBits = LastAlignmentBit + 1;
  static const unsigned AlignmentMask = (1 << AlignmentBits) - 1;
  static const unsigned GlobalObjectMask = (1 << GlobalObjectBits) - 1;

public:
  GlobalObject(const GlobalObject &) = delete;

/// FIXME: Remove this function once transition to Align is over.
  unsigned getAlignment() const {
    MaybeAlign Align = getAlign();
    return Align ? Align->value() : 0;
  }

/// Returns the alignment of the given variable or function.
  ///
  /// Note that for functions this is the alignment of the code, not the
  /// alignment of a function pointer.
  MaybeAlign getAlign() const {
    unsigned Data = getGlobalValueSubClassData();
    unsigned AlignmentData = Data & AlignmentMask;
    return decodeMaybeAlign(AlignmentData);
  }

void setAlignment(MaybeAlign Align);

unsigned getGlobalObjectSubClassData() const {
    unsigned ValueData = getGlobalValueSubClassData();
    return ValueData >> GlobalObjectBits;
  }

void setGlobalObjectSubClassData(unsigned Val) {
    unsigned OldData = getGlobalValueSubClassData();
    setGlobalValueSubClassData((OldData & GlobalObjectMask) |
                               (Val << GlobalObjectBits));
    assert(getGlobalObjectSubClassData() == Val && "representation error");
  }

/// Check if this global has a custom object file section.
  ///
  /// This is more efficient than calling getSection() and checking for an empty
  /// string.
  bool hasSection() const {
    return getGlobalValueSubClassData() & (1 << HasSectionHashEntryBit);
  }

/// Get the custom section of this global if it has one.
  ///
  /// If this global does not have a custom section, this will be empty and the
  /// default object file section (.text, .data, etc) will be used.
  StringRef getSection() const {
    return hasSection() ? getSectionImpl() : StringRef();
  }

/// Change the section for this global.
  ///
  /// Setting the section to the empty string tells LLVM to choose an
  /// appropriate default object file section.
  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; }

/// Check if this has any metadata.
  bool hasMetadata() const { return hasMetadataHashEntry(); }

/// Check if this has any metadata of the given kind.
  bool hasMetadata(unsigned KindID) const {
    return getMetadata(KindID) != nullptr;
  }
  bool hasMetadata(StringRef Kind) const {
    return getMetadata(Kind) != nullptr;
  }

/// Get the current metadata attachments for the given kind, if any.
  ///
  /// These functions require that the function have at most a single attachment
  /// of the given kind, and return \c nullptr if such an attachment is missing.
  /// @{
  MDNode *getMetadata(unsigned KindID) const;
  MDNode *getMetadata(StringRef Kind) const;
  /// @}

/// Appends all attachments with the given ID to \c MDs in insertion order.
  /// If the global has no attachments with the given ID, or if ID is invalid,
  /// leaves MDs unchanged.
  /// @{
  void getMetadata(unsigned KindID, SmallVectorImpl<MDNode *> &MDs) const;
  void getMetadata(StringRef Kind, SmallVectorImpl<MDNode *> &MDs) const;
  /// @}

/// Set a particular kind of metadata attachment.
  ///
  /// Sets the given attachment to \c MD, erasing it if \c MD is \c nullptr or
  /// replacing it if it already exists.
  /// @{
  void setMetadata(unsigned KindID, MDNode *MD);
  void setMetadata(StringRef Kind, MDNode *MD);
  /// @}

/// Add a metadata attachment.
  /// @{
  void addMetadata(unsigned KindID, MDNode &MD);
  void addMetadata(StringRef Kind, MDNode &MD);
  /// @}

/// Appends all attachments for the global to \c MDs, sorting by attachment
  /// ID. Attachments with the same ID appear in insertion order.
  void
  getAllMetadata(SmallVectorImpl<std::pair<unsigned, MDNode *>> &MDs) const;

/// Erase all metadata attachments with the given kind.
  ///
  /// \returns true if any metadata was removed.
  bool eraseMetadata(unsigned KindID);

/// Copy metadata from Src, adjusting offsets by Offset.
  void copyMetadata(const GlobalObject *Src, unsigned Offset);

void addTypeMetadata(unsigned Offset, Metadata *TypeID);
  void setVCallVisibilityMetadata(VCallVisibility Visibility);
  VCallVisibility getVCallVisibility() const;

/// Returns true if the alignment of the value can be unilaterally
  /// increased.
  ///
  /// Note that for functions this is the alignment of the code, not the
  /// alignment of a function pointer.
  bool canIncreaseAlignment() const;

protected:
  void copyAttributesFrom(const GlobalObject *Src);

public:
  // Methods for support type inquiry through isa, cast, and dyn_cast:
  static bool classof(const Value *V) {
    return V->getValueID() == Value::FunctionVal ||
           V->getValueID() == Value::GlobalVariableVal;
  }

void clearMetadata();

private:
  void setGlobalObjectFlag(unsigned Bit, bool Val) {
    unsigned Mask = 1 << Bit;
    setGlobalValueSubClassData((~Mask & getGlobalValueSubClassData()) |
                               (Val ? Mask : 0u));
  }

bool hasMetadataHashEntry() const {
    return getGlobalValueSubClassData() & (1 << HasMetadataHashEntryBit);
  }
  void setHasMetadataHashEntry(bool HasEntry) {
    setGlobalObjectFlag(HasMetadataHashEntryBit, HasEntry);
  }

StringRef getSectionImpl() const;
};

} // end namespace llvm

#endif // LLVM_IR_GLOBALOBJECT_H

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