[llvm] Use "= default" (NFC) (#166088)

Identified with modernize-use-equals-default.

llvm/examples/Kaleidoscope/Chapter9/toy.cpp

@@ -203,7 +203,7 @@ class ExprAST {
 
 public:
   ExprAST(SourceLocation Loc = CurLoc) : Loc(Loc) {}
-  virtual ~ExprAST() {}
+  virtual ~ExprAST() = default;
   virtual Value *codegen() = 0;
   int getLine() const { return Loc.Line; }
   int getCol() const { return Loc.Col; }

llvm/examples/OptSubcommand/llvm-hello-sub.cpp

@@ -46,7 +46,7 @@ public:
   HelloSubOptTable()
       : GenericOptTable(OptionStrTable, OptionPrefixesTable, InfoTable,
                         /*IgnoreCase=*/false, OptionSubCommands,
-                        OptionSubCommandIDsTable) {}
+                        OptionSubCommandIDsTable) = default;
 };
 } // namespace
 

llvm/include/llvm/Analysis/DDG.h

@@ -60,11 +60,7 @@ public:
   DDGNode(DDGNode &&N) : DDGNodeBase(std::move(N)), Kind(N.Kind) {}
   virtual ~DDGNode() = 0;
 
-  DDGNode &operator=(const DDGNode &N) {
-    DGNode::operator=(N);
-    Kind = N.Kind;
-    return *this;
-  }
+  DDGNode &operator=(const DDGNode &N) = default;
 
   DDGNode &operator=(DDGNode &&N) {
     DGNode::operator=(std::move(N));

llvm/include/llvm/Demangle/Utility.h

@@ -81,7 +81,7 @@ public:
   OutputBuffer(const OutputBuffer &) = delete;
   OutputBuffer &operator=(const OutputBuffer &) = delete;
 
-  virtual ~OutputBuffer() {}
+  virtual ~OutputBuffer() = default;
 
   operator std::string_view() const {
     return std::string_view(Buffer, CurrentPosition);

llvm/include/llvm/ExecutionEngine/JITLink/aarch32.h

@@ -175,7 +175,7 @@ struct HalfWords {
 /// FixupInfo base class is required for dynamic lookups.
 struct FixupInfoBase {
   LLVM_ABI static const FixupInfoBase *getDynFixupInfo(Edge::Kind K);
-  virtual ~FixupInfoBase() {}
+  virtual ~FixupInfoBase() = default;
 };
 
 /// FixupInfo checks for Arm edge kinds work on 32-bit words

llvm/include/llvm/ExecutionEngine/Orc/MachOBuilder.h

@@ -36,7 +36,7 @@ size_t writeMachOStruct(MutableArrayRef<char> Buf, size_t Offset, MachOStruct S,
 
 /// Base type for MachOBuilder load command wrappers.
 struct MachOBuilderLoadCommandBase {
-  virtual ~MachOBuilderLoadCommandBase() {}
+  virtual ~MachOBuilderLoadCommandBase() = default;
   virtual size_t size() const = 0;
   virtual size_t write(MutableArrayRef<char> Buf, size_t Offset,
                        bool SwapStruct) = 0;

llvm/include/llvm/ExecutionEngine/Orc/TargetProcess/ExecutorSharedMemoryMapperService.h

@@ -29,7 +29,7 @@ namespace rt_bootstrap {
 class LLVM_ABI ExecutorSharedMemoryMapperService final
     : public ExecutorBootstrapService {
 public:
-  ~ExecutorSharedMemoryMapperService() override {};
+  ~ExecutorSharedMemoryMapperService() override = default;
 
   Expected<std::pair<ExecutorAddr, std::string>> reserve(uint64_t Size);
   Expected<ExecutorAddr> initialize(ExecutorAddr Reservation,

llvm/include/llvm/Frontend/OpenMP/OMPIRBuilder.h

@@ -2383,7 +2383,7 @@ public:
     /// runtime library for debugging
     Value *MapNamesArray = nullptr;
 
-    explicit TargetDataRTArgs() {}
+    explicit TargetDataRTArgs() = default;
     explicit TargetDataRTArgs(Value *BasePointersArray, Value *PointersArray,
                               Value *SizesArray, Value *MapTypesArray,
                               Value *MapTypesArrayEnd, Value *MappersArray,
@@ -2451,7 +2451,7 @@ public:
     bool HasNoWait = false;
 
     // Constructors for TargetKernelArgs.
-    TargetKernelArgs() {}
+    TargetKernelArgs() = default;
     TargetKernelArgs(unsigned NumTargetItems, TargetDataRTArgs RTArgs,
                      Value *NumIterations, ArrayRef<Value *> NumTeams,
                      ArrayRef<Value *> NumThreads, Value *DynCGGroupMem,
@@ -2494,7 +2494,7 @@ public:
     /// Whether the `target ... data` directive has a `nowait` clause.
     bool HasNoWait = false;
 
-    explicit TargetDataInfo() {}
+    explicit TargetDataInfo() = default;
     explicit TargetDataInfo(bool RequiresDevicePointerInfo,
                             bool SeparateBeginEndCalls)
         : RequiresDevicePointerInfo(RequiresDevicePointerInfo),

llvm/include/llvm/IR/DebugProgramInstruction.h

@@ -589,7 +589,7 @@ filterDbgVars(iterator_range<simple_ilist<DbgRecord>::iterator> R) {
 /// date.
 class DbgMarker {
 public:
-  DbgMarker() {}
+  DbgMarker() = default;
   /// Link back to the Instruction that owns this marker. Can be null during
   /// operations that move a marker from one instruction to another.
   Instruction *MarkedInstr = nullptr;

llvm/include/llvm/IR/DroppedVariableStats.h

@@ -42,7 +42,7 @@ class DroppedVariableStats {
 public:
   LLVM_ABI DroppedVariableStats(bool DroppedVarStatsEnabled);
 
-  virtual ~DroppedVariableStats() {}
+  virtual ~DroppedVariableStats() = default;
 
   // We intend this to be unique per-compilation, thus no copies.
   DroppedVariableStats(const DroppedVariableStats &) = delete;

llvm/include/llvm/IR/TrackingMDRef.h

@@ -111,17 +111,14 @@ public:
   explicit TypedTrackingMDRef(T *MD) : Ref(static_cast<Metadata *>(MD)) {}
 
   TypedTrackingMDRef(TypedTrackingMDRef &&X) : Ref(std::move(X.Ref)) {}
-  TypedTrackingMDRef(const TypedTrackingMDRef &X) : Ref(X.Ref) {}
+  TypedTrackingMDRef(const TypedTrackingMDRef &X) = default;
 
   TypedTrackingMDRef &operator=(TypedTrackingMDRef &&X) {
     Ref = std::move(X.Ref);
     return *this;
   }
 
-  TypedTrackingMDRef &operator=(const TypedTrackingMDRef &X) {
-    Ref = X.Ref;
-    return *this;
-  }
+  TypedTrackingMDRef &operator=(const TypedTrackingMDRef &X) = default;
 
   T *get() const { return (T *)Ref.get(); }
   operator T *() const { return get(); }

llvm/include/llvm/MC/MCRegisterInfo.h

@@ -272,7 +272,7 @@ public:
   friend class MCRegUnitRootIterator;
   friend class MCRegAliasIterator;
 
-  virtual ~MCRegisterInfo() {}
+  virtual ~MCRegisterInfo() = default;
 
   /// Initialize MCRegisterInfo, called by TableGen
   /// auto-generated routines. *DO NOT USE*.

llvm/include/llvm/MCA/SourceMgr.h

@@ -50,7 +50,7 @@ struct SourceMgr {
   /// Advance to the next \a SourceRef.
   virtual void updateNext() = 0;
 
-  virtual ~SourceMgr() {}
+  virtual ~SourceMgr() = default;
 };
 
 /// The default implementation of \a SourceMgr. It always takes a fixed number

llvm/include/llvm/ObjCopy/ConfigManager.h

@@ -23,7 +23,7 @@ namespace llvm {
 namespace objcopy {
 
 struct LLVM_ABI ConfigManager : public MultiFormatConfig {
-  ~ConfigManager() override {}
+  ~ConfigManager() override = default;
 
   const CommonConfig &getCommonConfig() const override { return Common; }
 

llvm/include/llvm/ObjCopy/MultiFormatConfig.h

@@ -24,7 +24,7 @@ struct DXContainerConfig;
 
 class MultiFormatConfig {
 public:
-  virtual ~MultiFormatConfig() {}
+  virtual ~MultiFormatConfig() = default;
 
   virtual const CommonConfig &getCommonConfig() const = 0;
   virtual Expected<const ELFConfig &> getELFConfig() const = 0;

llvm/include/llvm/ObjectYAML/DXContainerYAML.h

@@ -115,7 +115,7 @@ struct RootParameterHeaderYaml {
   dxbc::ShaderVisibility Visibility;
   uint32_t Offset;
 
-  RootParameterHeaderYaml(){};
+  RootParameterHeaderYaml() = default;
   RootParameterHeaderYaml(dxbc::RootParameterType T) : Type(T) {}
 };
 
@@ -123,7 +123,7 @@ struct RootParameterLocationYaml {
   RootParameterHeaderYaml Header;
   std::optional<size_t> IndexInSignature;
 
-  RootParameterLocationYaml(){};
+  RootParameterLocationYaml() = default;
   explicit RootParameterLocationYaml(RootParameterHeaderYaml Header)
       : Header(Header) {}
 };

llvm/include/llvm/ProfileData/DataAccessProf.h

@@ -42,7 +42,7 @@ struct SourceLocation {
       : FileName(FileNameRef.str()), Line(Line) {}
 
   // Empty constructor is used in yaml conversion.
-  SourceLocation() {}
+  SourceLocation() = default;
   /// The filename where the data is located.
   std::string FileName;
   /// The line number in the source code.

llvm/include/llvm/SandboxIR/Pass.h

@@ -56,7 +56,7 @@ public:
            "A pass name should not contain whitespaces!");
     assert(!Name.starts_with('-') && "A pass name should not start with '-'!");
   }
-  virtual ~Pass() {}
+  virtual ~Pass() = default;
   /// \Returns the name of the pass.
   StringRef getName() const { return Name; }
 #ifndef NDEBUG

llvm/lib/DWARFLinker/Parallel/DWARFLinkerUnit.h

@@ -28,7 +28,7 @@ using MacroOffset2UnitMapTy = DenseMap<uint64_t, DwarfUnit *>;
 /// Base class for all Dwarf units(Compile unit/Type table unit).
 class DwarfUnit : public OutputSections {
 public:
-  virtual ~DwarfUnit() {}
+  virtual ~DwarfUnit() = default;
   DwarfUnit(LinkingGlobalData &GlobalData, unsigned ID,
             StringRef ClangModuleName)
       : OutputSections(GlobalData), ID(ID), ClangModuleName(ClangModuleName),

llvm/lib/DWARFLinker/Parallel/StringEntryToDwarfStringPoolEntryMap.h

@@ -22,7 +22,7 @@ class StringEntryToDwarfStringPoolEntryMap {
 public:
   StringEntryToDwarfStringPoolEntryMap(LinkingGlobalData &GlobalData)
       : GlobalData(GlobalData) {}
-  ~StringEntryToDwarfStringPoolEntryMap() {}
+  ~StringEntryToDwarfStringPoolEntryMap() = default;
 
   /// Create DwarfStringPoolEntry for specified StringEntry if necessary.
   /// Initialize DwarfStringPoolEntry with initial values.

llvm/lib/ExecutionEngine/Orc/MemoryMapper.cpp

@@ -27,7 +27,7 @@
 namespace llvm {
 namespace orc {
 
-MemoryMapper::~MemoryMapper() {}
+MemoryMapper::~MemoryMapper() = default;
 
 InProcessMemoryMapper::InProcessMemoryMapper(size_t PageSize)
     : PageSize(PageSize) {}

llvm/lib/MC/GOFFObjectWriter.cpp

@@ -520,7 +520,7 @@ GOFFObjectWriter::GOFFObjectWriter(
     std::unique_ptr<MCGOFFObjectTargetWriter> MOTW, raw_pwrite_stream &OS)
     : TargetObjectWriter(std::move(MOTW)), OS(OS) {}
 
-GOFFObjectWriter::~GOFFObjectWriter() {}
+GOFFObjectWriter::~GOFFObjectWriter() = default;
 
 uint64_t GOFFObjectWriter::writeObject() {
   uint64_t Size = GOFFWriter(OS, *Asm).writeObject();

llvm/lib/MC/MCDXContainerWriter.cpp

@@ -16,7 +16,7 @@
 
 using namespace llvm;
 
-MCDXContainerTargetWriter::~MCDXContainerTargetWriter() {}
+MCDXContainerTargetWriter::~MCDXContainerTargetWriter() = default;
 
 uint64_t DXContainerObjectWriter::writeObject() {
   auto &Asm = *this->Asm;

llvm/lib/MC/MCGOFFStreamer.cpp

@@ -20,7 +20,7 @@
 
 using namespace llvm;
 
-MCGOFFStreamer::~MCGOFFStreamer() {}
+MCGOFFStreamer::~MCGOFFStreamer() = default;
 
 GOFFObjectWriter &MCGOFFStreamer::getWriter() {
   return static_cast<GOFFObjectWriter &>(getAssembler().getWriter());

llvm/lib/ObjCopy/COFF/COFFWriter.h

@@ -50,7 +50,7 @@ class COFFWriter {
   Expected<uint32_t> virtualAddressToFileAddress(uint32_t RVA);
 
 public:
-  virtual ~COFFWriter() {}
+  virtual ~COFFWriter() = default;
   Error write();
 
   COFFWriter(Object &Obj, raw_ostream &Out)

llvm/lib/ObjCopy/ELF/ELFObject.h

@@ -134,7 +134,7 @@ private:
   using Elf_Sym = typename ELFT::Sym;
 
 public:
-  ~ELFSectionWriter() override {}
+  ~ELFSectionWriter() override = default;
   Error visit(const SymbolTableSection &Sec) override;
   Error visit(const RelocationSection &Sec) override;
   Error visit(const GnuDebugLinkSection &Sec) override;
@@ -180,7 +180,7 @@ public:
 
 class BinarySectionWriter : public SectionWriter {
 public:
-  ~BinarySectionWriter() override {}
+  ~BinarySectionWriter() override = default;
 
   Error visit(const SymbolTableSection &Sec) override;
   Error visit(const RelocationSection &Sec) override;
@@ -346,7 +346,7 @@ private:
   size_t totalSize() const;
 
 public:
-  ~ELFWriter() override {}
+  ~ELFWriter() override = default;
   bool WriteSectionHeaders;
 
   // For --only-keep-debug, select an alternative section/segment layout
@@ -367,7 +367,7 @@ private:
   uint64_t TotalSize = 0;
 
 public:
-  ~BinaryWriter() override {}
+  ~BinaryWriter() override = default;
   Error finalize() override;
   Error write() override;
   BinaryWriter(Object &Obj, raw_ostream &Out, const CommonConfig &Config)
@@ -784,7 +784,7 @@ private:
   SymbolTableSection *Symbols = nullptr;
 
 public:
-  ~SectionIndexSection() override {}
+  ~SectionIndexSection() override = default;
   void addIndex(uint32_t Index) {
     assert(Size > 0);
     Indexes.push_back(Index);

llvm/lib/ObjCopy/MachO/MachOReader.h

@@ -23,7 +23,7 @@ namespace macho {
 // raw binaries and regular MachO object files.
 class Reader {
 public:
-  virtual ~Reader(){};
+  virtual ~Reader() = default;
   virtual Expected<std::unique_ptr<Object>> create() const = 0;
 };
 

llvm/lib/ObjCopy/XCOFF/XCOFFWriter.h

@@ -20,7 +20,7 @@ namespace xcoff {
 
 class XCOFFWriter {
 public:
-  virtual ~XCOFFWriter() {}
+  virtual ~XCOFFWriter() = default;
   XCOFFWriter(Object &Obj, raw_ostream &Out) : Obj(Obj), Out(Out) {}
   Error write();
 

llvm/lib/ObjectYAML/GOFFYAML.cpp

@@ -15,7 +15,7 @@
 namespace llvm {
 namespace GOFFYAML {
 
-Object::Object() {}
+Object::Object() = default;
 
 } // namespace GOFFYAML
 

llvm/lib/Passes/StandardInstrumentations.cpp

@@ -537,7 +537,7 @@ void IRChangedPrinter::handleAfter(StringRef PassID, std::string &Name,
   Out << "*** IR Dump After " << PassID << " on " << Name << " ***\n" << After;
 }
 
-IRChangedTester::~IRChangedTester() {}
+IRChangedTester::~IRChangedTester() = default;
 
 void IRChangedTester::registerCallbacks(PassInstrumentationCallbacks &PIC) {
   if (TestChanged != "")
@@ -1566,7 +1566,7 @@ void InLineChangePrinter::registerCallbacks(PassInstrumentationCallbacks &PIC) {
     TextChangeReporter<IRDataT<EmptyData>>::registerRequiredCallbacks(PIC);
 }
 
-TimeProfilingPassesHandler::TimeProfilingPassesHandler() {}
+TimeProfilingPassesHandler::TimeProfilingPassesHandler() = default;
 
 void TimeProfilingPassesHandler::registerCallbacks(
     PassInstrumentationCallbacks &PIC) {

llvm/lib/SandboxIR/Context.cpp

@@ -637,7 +637,7 @@ Context::Context(LLVMContext &LLVMCtx)
     : LLVMCtx(LLVMCtx), IRTracker(*this),
       LLVMIRBuilder(LLVMCtx, ConstantFolder()) {}
 
-Context::~Context() {}
+Context::~Context() = default;
 
 void Context::clear() {
   // TODO: Ideally we should clear only function-scope objects, and keep global

llvm/lib/Target/AMDGPU/AMDGPU.h

@@ -69,7 +69,7 @@ FunctionPass *createAMDGPUPreloadKernArgPrologLegacyPass();
 ModulePass *createAMDGPUPreloadKernelArgumentsLegacyPass(const TargetMachine *);
 
 struct AMDGPUSimplifyLibCallsPass : PassInfoMixin<AMDGPUSimplifyLibCallsPass> {
-  AMDGPUSimplifyLibCallsPass() {}
+  AMDGPUSimplifyLibCallsPass() = default;
   PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
 };
 
@@ -371,13 +371,13 @@ public:
 class AMDGPUAnnotateUniformValuesPass
     : public PassInfoMixin<AMDGPUAnnotateUniformValuesPass> {
 public:
-  AMDGPUAnnotateUniformValuesPass() {}
+  AMDGPUAnnotateUniformValuesPass() = default;
   PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
 };
 
 class SIModeRegisterPass : public PassInfoMixin<SIModeRegisterPass> {
 public:
-  SIModeRegisterPass() {}
+  SIModeRegisterPass() = default;
   PreservedAnalyses run(MachineFunction &F, MachineFunctionAnalysisManager &AM);
 };
 

llvm/lib/Target/AMDGPU/AMDGPUArgumentUsageInfo.h

@@ -96,7 +96,7 @@ inline raw_ostream &operator<<(raw_ostream &OS, const ArgDescriptor &Arg) {
 }
 
 struct KernArgPreloadDescriptor : public ArgDescriptor {
-  KernArgPreloadDescriptor() {}
+  KernArgPreloadDescriptor() = default;
   SmallVector<MCRegister> Regs;
 };
 

llvm/lib/Target/AMDGPU/AMDGPUPerfHintAnalysis.h

@@ -48,7 +48,7 @@ private:
   FuncInfoMap FIM;
 
 public:
-  AMDGPUPerfHintAnalysis() {}
+  AMDGPUPerfHintAnalysis() = default;
 
   // OldPM
   bool runOnSCC(const GCNTargetMachine &TM, CallGraphSCC &SCC);

llvm/lib/Target/AMDGPU/AMDGPURegBankLegalizeRules.cpp

@@ -202,7 +202,7 @@ bool PredicateMapping::match(const MachineInstr &MI,
   return true;
 }
 
-SetOfRulesForOpcode::SetOfRulesForOpcode() {}
+SetOfRulesForOpcode::SetOfRulesForOpcode() = default;
 
 SetOfRulesForOpcode::SetOfRulesForOpcode(FastRulesTypes FastTypes)
     : FastTypes(FastTypes) {}

llvm/lib/Target/AMDGPU/AMDGPUWaitSGPRHazards.cpp

@@ -54,7 +54,7 @@ public:
   bool CullSGPRHazardsAtMemWait;
   unsigned CullSGPRHazardsMemWaitThreshold;
 
-  AMDGPUWaitSGPRHazards() {}
+  AMDGPUWaitSGPRHazards() = default;
 
   // Return the numeric ID 0-127 for a given SGPR.
   static std::optional<unsigned> sgprNumber(Register Reg,

llvm/lib/Target/AMDGPU/GCNSchedStrategy.h

@@ -183,7 +183,7 @@ class ScheduleMetrics {
   unsigned BubbleCycles;
 
 public:
-  ScheduleMetrics() {}
+  ScheduleMetrics() = default;
   ScheduleMetrics(unsigned L, unsigned BC)
       : ScheduleLength(L), BubbleCycles(BC) {}
   unsigned getLength() const { return ScheduleLength; }
@@ -217,7 +217,7 @@ class RegionPressureMap {
   bool IsLiveOut;
 
 public:
-  RegionPressureMap() {}
+  RegionPressureMap() = default;
   RegionPressureMap(GCNScheduleDAGMILive *GCNDAG, bool LiveOut)
       : DAG(GCNDAG), IsLiveOut(LiveOut) {}
   // Build the Instr->LiveReg and RegionIdx->Instr maps

llvm/lib/Target/Hexagon/HexagonISelDAGToDAG.cpp

@@ -1815,7 +1815,7 @@ struct WeightedLeaf {
   int Weight;
   int InsertionOrder;
 
-  WeightedLeaf() {}
+  WeightedLeaf() = default;
 
   WeightedLeaf(SDValue Value, int Weight, int InsertionOrder) :
     Value(Value), Weight(Weight), InsertionOrder(InsertionOrder) {

llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchELFObjectWriter.cpp

@@ -39,7 +39,7 @@ LoongArchELFObjectWriter::LoongArchELFObjectWriter(uint8_t OSABI, bool Is64Bit)
     : MCELFObjectTargetWriter(Is64Bit, OSABI, ELF::EM_LOONGARCH,
                               /*HasRelocationAddend=*/true) {}
 
-LoongArchELFObjectWriter::~LoongArchELFObjectWriter() {}
+LoongArchELFObjectWriter::~LoongArchELFObjectWriter() = default;
 
 unsigned LoongArchELFObjectWriter::getRelocType(const MCFixup &Fixup,
                                                 const MCValue &Target,

llvm/lib/Target/LoongArch/MCTargetDesc/LoongArchMCCodeEmitter.cpp

@@ -38,7 +38,7 @@ public:
   LoongArchMCCodeEmitter(MCContext &ctx, MCInstrInfo const &MCII)
       : Ctx(ctx), MCII(MCII) {}
 
-  ~LoongArchMCCodeEmitter() override {}
+  ~LoongArchMCCodeEmitter() override = default;
 
   void encodeInstruction(const MCInst &MI, SmallVectorImpl<char> &CB,
                          SmallVectorImpl<MCFixup> &Fixups,

llvm/lib/Target/NVPTX/NVPTXAliasAnalysis.h

@@ -20,7 +20,7 @@ class MemoryLocation;
 
 class NVPTXAAResult : public AAResultBase {
 public:
-  NVPTXAAResult() {}
+  NVPTXAAResult() = default;
   NVPTXAAResult(NVPTXAAResult &&Arg) : AAResultBase(std::move(Arg)) {}
 
   /// Handle invalidation events from the new pass manager.

llvm/lib/Target/RISCV/RISCVInsertWriteVXRM.cpp

@@ -48,7 +48,7 @@ class VXRMInfo {
   } State = Uninitialized;
 
 public:
-  VXRMInfo() {}
+  VXRMInfo() = default;
 
   static VXRMInfo getUnknown() {
     VXRMInfo Info;

llvm/lib/Target/SPIRV/MCTargetDesc/SPIRVTargetStreamer.cpp

@@ -15,4 +15,4 @@
 using namespace llvm;
 
 SPIRVTargetStreamer::SPIRVTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
-SPIRVTargetStreamer::~SPIRVTargetStreamer() {}
+SPIRVTargetStreamer::~SPIRVTargetStreamer() = default;

llvm/lib/Target/SPIRV/SPIRVModuleAnalysis.h

@@ -81,7 +81,7 @@ private:
   void initAvailableCapabilitiesForVulkan(const SPIRVSubtarget &ST);
 
 public:
-  RequirementHandler() {}
+  RequirementHandler() = default;
   void clear() {
     MinimalCaps.clear();
     AllCaps.clear();

llvm/lib/Target/SPIRV/SPIRVTargetMachine.cpp

@@ -69,7 +69,7 @@ static Reloc::Model getEffectiveRelocModel(std::optional<Reloc::Model> RM) {
 }
 
 // Pin SPIRVTargetObjectFile's vtables to this file.
-SPIRVTargetObjectFile::~SPIRVTargetObjectFile() {}
+SPIRVTargetObjectFile::~SPIRVTargetObjectFile() = default;
 
 SPIRVTargetMachine::SPIRVTargetMachine(const Target &T, const Triple &TT,
                                        StringRef CPU, StringRef FS,

llvm/lib/Target/SystemZ/SystemZTargetObjectFile.h

@@ -16,7 +16,7 @@ namespace llvm {
 /// This implementation is used for SystemZ ELF targets.
 class SystemZELFTargetObjectFile : public TargetLoweringObjectFileELF {
 public:
-  SystemZELFTargetObjectFile() {}
+  SystemZELFTargetObjectFile() = default;
 
   /// Describe a TLS variable address within debug info.
   const MCExpr *getDebugThreadLocalSymbol(const MCSymbol *Sym) const override;

llvm/lib/TextAPI/RecordVisitor.cpp

@@ -15,7 +15,7 @@
 using namespace llvm;
 using namespace llvm::MachO;
 
-RecordVisitor::~RecordVisitor() {}
+RecordVisitor::~RecordVisitor() = default;
 void RecordVisitor::visitObjCInterface(const ObjCInterfaceRecord &) {}
 void RecordVisitor::visitObjCCategory(const ObjCCategoryRecord &) {}
 

llvm/tools/bugpoint/ListReducer.h

@@ -32,7 +32,7 @@ template <typename ElTy> struct ListReducer {
     KeepPrefix  // The prefix alone satisfies the predicate
   };
 
-  virtual ~ListReducer() {}
+  virtual ~ListReducer() = default;
 
   /// This virtual function should be overriden by subclasses to implement the
   /// test desired.  The testcase is only required to test to see if the Kept

llvm/tools/bugpoint/ToolRunner.h

@@ -105,7 +105,7 @@ public:
   createCustomExecutor(const char *Argv0, std::string &Message,
                        const std::string &ExecCommandLine);
 
-  virtual ~AbstractInterpreter() {}
+  virtual ~AbstractInterpreter() = default;
 
   /// compileProgram - Compile the specified program from bitcode to executable
   /// code.  This does not produce any output, it is only used when debugging

llvm/tools/dsymutil/BinaryHolder.h

@@ -110,7 +110,7 @@ public:
       std::string Filename;
       TimestampTy Timestamp;
 
-      KeyTy() {}
+      KeyTy() = default;
       KeyTy(StringRef Filename, TimestampTy Timestamp)
           : Filename(Filename.str()), Timestamp(Timestamp) {}
     };

llvm/tools/lli/lli.cpp

@@ -305,7 +305,7 @@ public:
         this->CacheDir[this->CacheDir.size() - 1] != '/')
       this->CacheDir += '/';
   }
-  ~LLIObjectCache() override {}
+  ~LLIObjectCache() override = default;
 
   void notifyObjectCompiled(const Module *M, MemoryBufferRef Obj) override {
     const std::string &ModuleID = M->getModuleIdentifier();

llvm/tools/llvm-cov/CoverageExporter.h

@@ -37,7 +37,7 @@ protected:
       : Coverage(CoverageMapping), Options(Options), OS(OS) {}
 
 public:
-  virtual ~CoverageExporter(){};
+  virtual ~CoverageExporter() = default;
 
   /// Render the CoverageMapping object.
   virtual void renderRoot(const CoverageFilters &IgnoreFilters) = 0;

llvm/tools/llvm-cov/CoverageFilters.h

@@ -28,7 +28,7 @@ struct FunctionRecord;
 /// Matches specific functions that pass the requirement of this filter.
 class CoverageFilter {
 public:
-  virtual ~CoverageFilter() {}
+  virtual ~CoverageFilter() = default;
 
   /// Return true if the function passes the requirements of this filter.
   virtual bool matches(const coverage::CoverageMapping &CM,

llvm/tools/llvm-cov/SourceCoverageView.h

@@ -122,7 +122,7 @@ public:
   static std::unique_ptr<CoveragePrinter>
   create(const CoverageViewOptions &Opts);
 
-  virtual ~CoveragePrinter() {}
+  virtual ~CoveragePrinter() = default;
 
   /// @name File Creation Interface
   /// @{
@@ -288,7 +288,7 @@ public:
   create(StringRef SourceName, const MemoryBuffer &File,
          const CoverageViewOptions &Options, CoverageData &&CoverageInfo);
 
-  virtual ~SourceCoverageView() {}
+  virtual ~SourceCoverageView() = default;
 
   /// Return the source name formatted for the host OS.
   std::string getSourceName() const;

llvm/tools/llvm-diff/lib/DiffConsumer.h

@@ -49,7 +49,7 @@ class StringRef;
     virtual void logd(const DiffLogBuilder &Log) = 0;
 
   protected:
-    virtual ~Consumer() {}
+    virtual ~Consumer() = default;
   };
 
   class DiffConsumer : public Consumer {

llvm/tools/llvm-diff/lib/DifferenceEngine.h

@@ -54,7 +54,7 @@ namespace llvm {
       virtual bool operator()(const Value *L, const Value *R) = 0;
 
     protected:
-      virtual ~Oracle() {}
+      virtual ~Oracle() = default;
     };
 
     DifferenceEngine(Consumer &consumer)

llvm/tools/llvm-exegesis/lib/BenchmarkRunner.cpp

@@ -877,7 +877,7 @@ Error BenchmarkRunner::getValidationCountersToRun(
   return Error::success();
 }
 
-BenchmarkRunner::FunctionExecutor::~FunctionExecutor() {}
+BenchmarkRunner::FunctionExecutor::~FunctionExecutor() = default;
 
 } // namespace exegesis
 } // namespace llvm

llvm/tools/llvm-exegesis/lib/Error.h

@@ -81,7 +81,7 @@ private:
 struct PerfCounterNotFullyEnabled
     : public ErrorInfo<PerfCounterNotFullyEnabled> {
   static char ID;
-  PerfCounterNotFullyEnabled() {}
+  PerfCounterNotFullyEnabled() = default;
 
   void log(raw_ostream &OS) const override;
 

llvm/tools/llvm-exegesis/lib/SnippetRepetitor.cpp

@@ -131,7 +131,7 @@ private:
 
 } // namespace
 
-SnippetRepetitor::~SnippetRepetitor() {}
+SnippetRepetitor::~SnippetRepetitor() = default;
 
 std::unique_ptr<const SnippetRepetitor>
 SnippetRepetitor::Create(Benchmark::RepetitionModeE Mode,

llvm/tools/llvm-exegesis/lib/Target.cpp

@@ -23,7 +23,7 @@ cl::OptionCategory Options("llvm-exegesis options");
 cl::OptionCategory BenchmarkOptions("llvm-exegesis benchmark options");
 cl::OptionCategory AnalysisOptions("llvm-exegesis analysis options");
 
-ExegesisTarget::~ExegesisTarget() {} // anchor.
+ExegesisTarget::~ExegesisTarget() = default; // anchor.
 
 static ExegesisTarget *FirstTarget = nullptr;
 
@@ -215,7 +215,7 @@ const PfmCountersInfo &ExegesisTarget::getDummyPfmCounters() const {
   return PfmCountersInfo::Dummy;
 }
 
-ExegesisTarget::SavedState::~SavedState() {} // anchor.
+ExegesisTarget::SavedState::~SavedState() = default; // anchor.
 
 namespace {
 

llvm/tools/llvm-libtool-darwin/DependencyInfo.h

@@ -18,7 +18,7 @@ public:
   explicit DependencyInfo(std::string DependencyInfoPath)
       : DependencyInfoPath(DependencyInfoPath) {}
 
-  virtual ~DependencyInfo(){};
+  virtual ~DependencyInfo() = default;
 
   virtual void addMissingInput(llvm::StringRef Path) {
     NotFounds.insert(Path.str());

llvm/tools/llvm-mca/CodeRegionGenerator.cpp

@@ -26,7 +26,7 @@ namespace llvm {
 namespace mca {
 
 // This virtual dtor serves as the anchor for the CodeRegionGenerator class.
-CodeRegionGenerator::~CodeRegionGenerator() {}
+CodeRegionGenerator::~CodeRegionGenerator() = default;
 
 Expected<const CodeRegions &> AsmCodeRegionGenerator::parseCodeRegions(
     const std::unique_ptr<MCInstPrinter> &IP, bool SkipFailures) {

llvm/tools/llvm-mca/CodeRegionGenerator.h

@@ -151,7 +151,7 @@ protected:
                    bool SkipFailures) = 0;
 
 public:
-  CodeRegionGenerator() {}
+  CodeRegionGenerator() = default;
   virtual ~CodeRegionGenerator();
 };
 

llvm/tools/llvm-objdump/SourcePrinter.h

@@ -34,7 +34,7 @@ public:
   LiveElement(const char *Name, DWARFUnit *Unit, const DWARFDie FuncDie)
       : Name(Name), Unit(Unit), FuncDie(FuncDie) {}
 
-  virtual ~LiveElement() {};
+  virtual ~LiveElement() = default;
   const char *getName() const { return Name; }
 
   virtual bool liveAtAddress(object::SectionedAddress Addr) const = 0;

llvm/tools/llvm-objdump/llvm-objdump.h

@@ -84,7 +84,7 @@ protected:
 
 public:
   Dumper(const object::ObjectFile &O);
-  virtual ~Dumper() {}
+  virtual ~Dumper() = default;
 
   void reportUniqueWarning(Error Err);
   void reportUniqueWarning(const Twine &Msg);

llvm/tools/llvm-pdbutil/DumpOutputStyle.cpp

@@ -68,7 +68,7 @@ DumpOutputStyle::DumpOutputStyle(InputFile &File)
     RefTracker.reset(new TypeReferenceTracker(File));
 }
 
-DumpOutputStyle::~DumpOutputStyle() {}
+DumpOutputStyle::~DumpOutputStyle() = default;
 
 PDBFile &DumpOutputStyle::getPdb() { return File.pdb(); }
 object::COFFObjectFile &DumpOutputStyle::getObj() { return File.obj(); }

llvm/tools/llvm-pdbutil/DumpOutputStyle.h

@@ -29,7 +29,7 @@ class TypeReferenceTracker;
 
 struct StatCollection {
   struct Stat {
-    Stat() {}
+    Stat() = default;
     Stat(uint32_t Count, uint32_t Size) : Count(Count), Size(Size) {}
     uint32_t Count = 0;
     uint32_t Size = 0;

llvm/tools/llvm-pdbutil/OutputStyle.h

@@ -17,7 +17,7 @@ namespace pdb {
 
 class OutputStyle {
 public:
-  virtual ~OutputStyle() {}
+  virtual ~OutputStyle() = default;
 
   virtual Error dump() = 0;
 };

llvm/tools/llvm-pdbutil/StreamUtil.h

@@ -35,7 +35,7 @@ enum class StreamPurpose {
 
 struct StreamInfo {
 public:
-  StreamInfo() {}
+  StreamInfo() = default;
 
   uint32_t getModuleIndex() const { return *ModuleIndex; }
   StreamPurpose getPurpose() const { return Purpose; }

llvm/tools/llvm-profgen/ProfiledBinary.cpp

@@ -187,7 +187,7 @@ ProfiledBinary::ProfiledBinary(const StringRef ExeBinPath,
   load();
 }
 
-ProfiledBinary::~ProfiledBinary() {}
+ProfiledBinary::~ProfiledBinary() = default;
 
 void ProfiledBinary::warnNoFuncEntry() {
   uint64_t NoFuncEntryNum = 0;

llvm/tools/llvm-rc/ResourceScriptStmt.h

@@ -242,9 +242,9 @@ public:
   virtual raw_ostream &log(raw_ostream &OS) const {
     return OS << "Base statement\n";
   };
-  RCResource() {}
+  RCResource() = default;
   RCResource(uint16_t Flags) : MemoryFlags(Flags) {}
-  virtual ~RCResource() {}
+  virtual ~RCResource() = default;
 
   virtual Error visit(Visitor *) const {
     llvm_unreachable("This is unable to call methods from Visitor base");
@@ -290,7 +290,7 @@ class OptionalStmtList : public OptionalStmt {
   std::vector<std::unique_ptr<OptionalStmt>> Statements;
 
 public:
-  OptionalStmtList() {}
+  OptionalStmtList() = default;
   raw_ostream &log(raw_ostream &OS) const override;
 
   void addStmt(std::unique_ptr<OptionalStmt> Stmt) {
@@ -510,7 +510,7 @@ public:
   virtual raw_ostream &log(raw_ostream &OS) const {
     return OS << "Base menu definition\n";
   }
-  virtual ~MenuDefinition() {}
+  virtual ~MenuDefinition() = default;
 
   virtual uint16_t getResFlags() const { return 0; }
   virtual MenuDefKind getKind() const { return MkBase; }
@@ -818,7 +818,7 @@ public:
   enum StmtKind { StBase = 0, StBlock = 1, StValue = 2 };
 
   virtual raw_ostream &log(raw_ostream &OS) const { return OS << "VI stmt\n"; }
-  virtual ~VersionInfoStmt() {}
+  virtual ~VersionInfoStmt() = default;
 
   virtual StmtKind getKind() const { return StBase; }
   static bool classof(const VersionInfoStmt *S) {

llvm/tools/llvm-rc/ResourceVisitor.h

@@ -55,7 +55,7 @@ public:
   virtual Error visitVersionStmt(const VersionStmt *) = 0;
   virtual Error visitMenuStmt(const MenuStmt *) = 0;
 
-  virtual ~Visitor() {}
+  virtual ~Visitor() = default;
 };
 
 } // namespace rc

llvm/tools/llvm-readobj/ObjDumper.cpp

@@ -41,7 +41,7 @@ ObjDumper::ObjDumper(ScopedPrinter &Writer, StringRef ObjName) : W(Writer) {
   };
 }
 
-ObjDumper::~ObjDumper() {}
+ObjDumper::~ObjDumper() = default;
 
 void ObjDumper::reportUniqueWarning(Error Err) const {
   reportUniqueWarning(toString(std::move(Err)));

llvm/tools/llvm-readtapi/DiffEngine.h

@@ -39,7 +39,7 @@ enum DiffAttrKind {
 class AttributeDiff {
 public:
   AttributeDiff(DiffAttrKind Kind) : Kind(Kind){};
-  virtual ~AttributeDiff(){};
+  virtual ~AttributeDiff() = default;
   DiffAttrKind getKind() const { return Kind; }
 
 private:

llvm/unittests/DebugInfo/CodeView/RandomAccessVisitorTest.cpp

@@ -84,7 +84,7 @@ public:
 
 class RandomAccessVisitorTest : public testing::Test {
 public:
-  RandomAccessVisitorTest() {}
+  RandomAccessVisitorTest() = default;
 
   static void SetUpTestCase() {
     GlobalState = std::make_unique<GlobalTestState>();

llvm/unittests/DebugInfo/CodeView/TypeIndexDiscoveryTest.cpp

@@ -21,7 +21,7 @@ using namespace llvm::codeview;
 
 class TypeIndexIteratorTest : public testing::Test {
 public:
-  TypeIndexIteratorTest() {}
+  TypeIndexIteratorTest() = default;
 
   void SetUp() override {
     Refs.clear();

llvm/unittests/DebugInfo/DWARF/DWARFDebugLineTest.cpp

@@ -864,7 +864,7 @@ TEST_F(DebugLineBasicFixture, CallbackUsedForUnterminatedSequence) {
 }
 
 struct AdjustAddressFixtureBase : public CommonFixture {
-  virtual ~AdjustAddressFixtureBase() {}
+  virtual ~AdjustAddressFixtureBase() = default;
 
   // Create and update the prologue as specified by the subclass, then return
   // the length of the table.

llvm/unittests/ExecutionEngine/JITLink/JITLinkTestUtils.h

@@ -19,7 +19,7 @@ class MockJITLinkMemoryManager : public llvm::jitlink::JITLinkMemoryManager {
 public:
   class Alloc {
   public:
-    virtual ~Alloc() {}
+    virtual ~Alloc() = default;
   };
 
   class SimpleAlloc : public Alloc {

llvm/unittests/MC/SystemZ/SystemZMCDisassemblerTest.cpp

@@ -61,7 +61,7 @@ Context &getContext() {
 class SystemZMCSymbolizerTest : public MCSymbolizer {
 public:
   SystemZMCSymbolizerTest(MCContext &MC) : MCSymbolizer(MC, nullptr) {}
-  ~SystemZMCSymbolizerTest() override {}
+  ~SystemZMCSymbolizerTest() override = default;
 
   bool tryAddingSymbolicOperand([[maybe_unused]] MCInst &Inst,
                                 [[maybe_unused]] raw_ostream &CStream,

llvm/unittests/MC/X86/X86MCDisassemblerTest.cpp

@@ -62,7 +62,7 @@ Context &getContext() {
 class X86MCSymbolizerTest : public MCSymbolizer {
 public:
   X86MCSymbolizerTest(MCContext &MC) : MCSymbolizer(MC, nullptr) {}
-  ~X86MCSymbolizerTest() override {}
+  ~X86MCSymbolizerTest() override = default;
 
   struct OpInfo {
     int64_t Value = 0;

llvm/unittests/MIR/MachineMetadata.cpp

@@ -33,7 +33,7 @@ using namespace llvm;
 
 class MachineMetadataTest : public testing::Test {
 public:
-  MachineMetadataTest() {}
+  MachineMetadataTest() = default;
 
 protected:
   LLVMContext Context;

llvm/unittests/MIR/MachineStableHashTest.cpp

@@ -22,7 +22,7 @@ using namespace llvm;
 
 class MachineStableHashTest : public testing::Test {
 public:
-  MachineStableHashTest() {}
+  MachineStableHashTest() = default;
 
 protected:
   LLVMContext Context;

llvm/utils/FileCheck/FileCheck.cpp

@@ -193,7 +193,7 @@ struct MarkerStyle {
   std::string Note;
   /// Does this marker indicate inclusion by -dump-input-filter=error?
   bool FiltersAsError;
-  MarkerStyle() {}
+  MarkerStyle() = default;
   MarkerStyle(char Lead, raw_ostream::Colors Color,
               const std::string &Note = "", bool FiltersAsError = false)
       : Lead(Lead), Color(Color), Note(Note), FiltersAsError(FiltersAsError) {