CodeGenAction.cpp Source File (original) (raw)

31#include "llvm/ADT/Hashing.h"

32#include "llvm/Bitcode/BitcodeReader.h"

33#include "llvm/CodeGen/MachineOptimizationRemarkEmitter.h"

34#include "llvm/Demangle/Demangle.h"

35#include "llvm/IR/DebugInfo.h"

36#include "llvm/IR/DiagnosticInfo.h"

37#include "llvm/IR/DiagnosticPrinter.h"

38#include "llvm/IR/GlobalValue.h"

39#include "llvm/IR/LLVMContext.h"

40#include "llvm/IR/LLVMRemarkStreamer.h"

41#include "llvm/IR/Module.h"

42#include "llvm/IRReader/IRReader.h"

43#include "llvm/LTO/LTOBackend.h"

44#include "llvm/Linker/Linker.h"

45#include "llvm/Pass.h"

46#include "llvm/Support/MemoryBuffer.h"

47#include "llvm/Support/SourceMgr.h"

48#include "llvm/Support/TimeProfiler.h"

49#include "llvm/Support/Timer.h"

50#include "llvm/Support/ToolOutputFile.h"

51#include "llvm/Transforms/IPO/Internalize.h"

52#include "llvm/Transforms/Utils/Cloning.h"

54#include

55using namespace clang;

56using namespace llvm;

58#define DEBUG_TYPE "codegenaction"

63public:

65 : CodeGenOpts(CGOpts), BackendCon(BCon) {}

71 }

74 }

77 }

83 }

85private:

88};

92 handleAllErrors(

93 std::move(E),

94 [&](const LLVMRemarkSetupFileError &E) {

95 Diags.Report(diag::err_cannot_open_file)

97 },

98 [&](const LLVMRemarkSetupPatternError &E) {

99 Diags.Report(diag::err_drv_optimization_remark_pattern)

101 },

102 [&](const LLVMRemarkSetupFormatError &E) {

103 Diags.Report(diag::err_drv_optimization_remark_format)

105 });

106}

107

110 LLVMContext &C,

112 StringRef InFile,

113 std::unique_ptr<raw_pwrite_stream> OS,

115 llvm::Module *CurLinkModule)

116 : CI(CI), Diags(CI.getDiagnostics()), CodeGenOpts(CI.getCodeGenOpts()),

117 TargetOpts(CI.getTargetOpts()), LangOpts(CI.getLangOpts()),

118 AsmOutStream(std::move(OS)), FS(VFS), Action(Action),

120 CI.getHeaderSearchOpts(), CI.getPreprocessorOpts(),

121 CI.getCodeGenOpts(), C, CoverageInfo)),

122 LinkModules(std::move(LinkModules)), CurLinkModule(CurLinkModule) {

123 TimerIsEnabled = CodeGenOpts.TimePasses;

124 llvm::TimePassesIsEnabled = CodeGenOpts.TimePasses;

125 llvm::TimePassesPerRun = CodeGenOpts.TimePassesPerRun;

126 if (CodeGenOpts.TimePasses)

127 LLVMIRGeneration.init("irgen", "LLVM IR generation", CI.getTimerGroup());

128}

129

131 return Gen->GetModule();

132}

133

135 return std::unique_ptrllvm::Module(Gen->ReleaseModule());

136}

137

139 return Gen.get();

140}

141

143 Gen->HandleCXXStaticMemberVarInstantiation(VD);

144}

145

147 assert(!Context && "initialized multiple times");

148

149 Context = &Ctx;

150

151 if (TimerIsEnabled)

152 LLVMIRGeneration.startTimer();

153

154 Gen->Initialize(Ctx);

155

156 if (TimerIsEnabled)

157 LLVMIRGeneration.stopTimer();

158}

159

163 "LLVM IR generation of declaration");

164

165

166 if (TimerIsEnabled && !LLVMIRGenerationRefCount++)

168

169 Gen->HandleTopLevelDecl(D);

170

171 if (TimerIsEnabled && !--LLVMIRGenerationRefCount)

173

174 return true;

175}

176

180 "LLVM IR generation of inline function");

181 if (TimerIsEnabled)

183

184 Gen->HandleInlineFunctionDefinition(D);

185

186 if (TimerIsEnabled)

188}

189

191

192 if (!IRGenFinished)

194}

195

196

198 for (auto &LM : LinkModules) {

199 assert(LM.Module && "LinkModule does not actually have a module");

200

201 if (LM.PropagateAttrs)

202 for (Function &F : *LM.Module) {

203

204

205 if (F.isIntrinsic())

206 continue;

208 F, CodeGenOpts, LangOpts, TargetOpts, LM.Internalize);

209 }

210

211 CurLinkModule = LM.Module.get();

212 bool Err;

213

214 if (LM.Internalize) {

215 Err = Linker::linkModules(

216 *M, std::move(LM.Module), LM.LinkFlags,

217 [](llvm::Module &M, const llvm::StringSet<> &GVS) {

218 internalizeModule(M, [&GVS](const llvm::GlobalValue &GV) {

219 return !GV.hasName() || (GVS.count(GV.getName()) == 0);

220 });

221 });

222 } else

223 Err = Linker::linkModules(*M, std::move(LM.Module), LM.LinkFlags);

224

225 if (Err)

226 return true;

227 }

228

229 LinkModules.clear();

230 return false;

231}

232

234 {

235 llvm::TimeTraceScope TimeScope("Frontend");

236 PrettyStackTraceString CrashInfo("Per-file LLVM IR generation");

237 if (TimerIsEnabled && !LLVMIRGenerationRefCount++)

239

240 Gen->HandleTranslationUnit(C);

241

242 if (TimerIsEnabled && !--LLVMIRGenerationRefCount)

244

245 IRGenFinished = true;

246 }

247

248

250 return;

251

252 LLVMContext &Ctx = getModule()->getContext();

253 std::unique_ptr OldDiagnosticHandler =

254 Ctx.getDiagnosticHandler();

255 Ctx.setDiagnosticHandler(std::make_unique(

256 CodeGenOpts, this));

257

258 Ctx.setDefaultTargetCPU(TargetOpts.CPU);

259 Ctx.setDefaultTargetFeatures(llvm::join(TargetOpts.Features, ","));

260

262 setupLLVMOptimizationRemarks(

264 CodeGenOpts.OptRecordFormat, CodeGenOpts.DiagnosticsWithHotness,

266

267 if (Error E = OptRecordFileOrErr.takeError()) {

269 return;

270 }

271

272 std::unique_ptrllvm::ToolOutputFile OptRecordFile =

273 std::move(*OptRecordFileOrErr);

274

275 if (OptRecordFile &&

277 Ctx.setDiagnosticsHotnessRequested(true);

278

279 if (CodeGenOpts.MisExpect) {

280 Ctx.setMisExpectWarningRequested(true);

281 }

282

284 Ctx.setDiagnosticsMisExpectTolerance(

286 }

287

288

290 return;

291

292 for (auto &F : getModule()->functions()) {

293 if (const Decl *FD = Gen->GetDeclForMangledName(F.getName())) {

294 auto Loc = FD->getASTContext().getFullLoc(FD->getLocation());

295

297 ManglingFullSourceLocs.push_back(std::make_pair(NameHash, Loc));

298 }

299 }

300

301 if (CodeGenOpts.ClearASTBeforeBackend) {

302 LLVM_DEBUG(llvm::dbgs() << "Clearing AST...\n");

303

304

305

306

307

308

309 C.cleanup();

310 C.getAllocator().Reset();

311 }

312

314

316 Action, FS, std::move(AsmOutStream), this);

317

318 Ctx.setDiagnosticHandler(std::move(OldDiagnosticHandler));

319

320 if (OptRecordFile)

321 OptRecordFile->keep();

322}

323

327 "LLVM IR generation of declaration");

328 Gen->HandleTagDeclDefinition(D);

329}

330

332 Gen->HandleTagDeclRequiredDefinition(D);

333}

334

336 Gen->CompleteTentativeDefinition(D);

337}

338

340 Gen->CompleteExternalDeclaration(D);

341}

342

344 Gen->AssignInheritanceModel(RD);

345}

346

348 Gen->HandleVTable(RD);

349}

350

351void BackendConsumer::anchor() { }

352

353}

354

357 return true;

358}

359

360

361

364

365

366

367 const llvm::SourceMgr &LSM = *D.getSourceMgr();

368

369

370

371 const MemoryBuffer *LBuf =

372 LSM.getMemoryBuffer(LSM.FindBufferContainingLoc(D.getLoc()));

373

374

375

376 std::unique_ptrllvm::MemoryBuffer CBuf =

377 llvm::MemoryBuffer::getMemBufferCopy(LBuf->getBuffer(),

378 LBuf->getBufferIdentifier());

379

381

382

383 unsigned Offset = D.getLoc().getPointer() - LBuf->getBufferStart();

387}

388

389#define ComputeDiagID(Severity, GroupName, DiagID) \

390 do { \

391 switch (Severity) { \

392 case llvm::DS_Error: \

393 DiagID = diag::err_fe_##GroupName; \

394 break; \

395 case llvm::DS_Warning: \

396 DiagID = diag::warn_fe_##GroupName; \

397 break; \

398 case llvm::DS_Remark: \

399 llvm_unreachable("'remark' severity not expected"); \

400 break; \

401 case llvm::DS_Note: \

402 DiagID = diag::note_fe_##GroupName; \

403 break; \

404 } \

405 } while (false)

406

407#define ComputeDiagRemarkID(Severity, GroupName, DiagID) \

408 do { \

409 switch (Severity) { \

410 case llvm::DS_Error: \

411 DiagID = diag::err_fe_##GroupName; \

412 break; \

413 case llvm::DS_Warning: \

414 DiagID = diag::warn_fe_##GroupName; \

415 break; \

416 case llvm::DS_Remark: \

417 DiagID = diag::remark_fe_##GroupName; \

418 break; \

419 case llvm::DS_Note: \

420 DiagID = diag::note_fe_##GroupName; \

421 break; \

422 } \

423 } while (false)

424

426 const llvm::SMDiagnostic &D = DI.getSMDiag();

427

428 unsigned DiagID;

429 if (DI.isInlineAsmDiag())

430 ComputeDiagID(DI.getSeverity(), inline_asm, DiagID);

431 else

432 ComputeDiagID(DI.getSeverity(), source_mgr, DiagID);

433

434

435

436 if (!Context) {

437 D.print(nullptr, llvm::errs());

438 Diags.Report(DiagID).AddString("cannot compile inline asm");

439 return;

440 }

441

442

443

444

445

446 StringRef Message = D.getMessage();

447 (void)Message.consume_front("error: ");

448

449

451 if (D.getLoc() != SMLoc())

453

454

455

456

457 if (DI.isInlineAsmDiag()) {

460 if (LocCookie.isValid()) {

462

463 if (D.getLoc().isValid()) {

465

466

467 for (const std::pair<unsigned, unsigned> &Range : D.getRanges()) {

468 unsigned Column = D.getColumnNo();

471 }

472 }

473 return;

474 }

475 }

476

477

478

479

481}

482

483bool

485 unsigned DiagID;

487 std::string Message = D.getMsgStr().str();

488

489

490

491

496 else {

497

498

499

500

503 }

504

505 return true;

506}

507

508bool

510 if (D.getSeverity() != llvm::DS_Warning)

511

512

513 return false;

514

516 if ( Loc )

517 return false;

518

519 Diags.Report(*Loc, diag::warn_fe_frame_larger_than)

520 << D.getStackSize() << D.getStackLimit()

521 << llvm::demangle(D.getFunction().getName());

522 return true;

523}

524

526 const llvm::DiagnosticInfoResourceLimit &D) {

528 if ( Loc )

529 return false;

530 unsigned DiagID = diag::err_fe_backend_resource_limit;

531 ComputeDiagID(D.getSeverity(), backend_resource_limit, DiagID);

532

534 << D.getResourceName() << D.getResourceSize() << D.getResourceLimit()

535 << llvm::demangle(D.getFunction().getName());

536 return true;

537}

538

540 const llvm::DiagnosticInfoWithLocationBase &D, bool &BadDebugInfo,

545

546 if (D.isLocationAvailable()) {

548 if (Line > 0) {

550 if (!FE)

552 if (FE) {

553

554

556 }

557 }

558 BadDebugInfo = DILoc.isInvalid();

559 }

560

561

562

563

567 Loc = *MaybeLoc;

568 }

569

570 if (DILoc.isInvalid() && D.isLocationAvailable())

571

572

573

574

575 Diags.Report(Loc, diag::note_fe_backend_invalid_loc)

577

578 return Loc;

579}

580

581std::optional

584 for (const auto &Pair : ManglingFullSourceLocs) {

585 if (Pair.first == Hash)

586 return Pair.second;

587 }

588 return std::nullopt;

589}

590

592 const llvm::DiagnosticInfoUnsupported &D) {

593

594 assert(D.getSeverity() == llvm::DS_Error ||

595 D.getSeverity() == llvm::DS_Warning);

596

599 bool BadDebugInfo = false;

601 std::string Msg;

602 raw_string_ostream MsgStream(Msg);

603

604

605

606 if (Context != nullptr) {

608 MsgStream << D.getMessage();

609 } else {

610 DiagnosticPrinterRawOStream DP(MsgStream);

612 }

613

614 auto DiagType = D.getSeverity() == llvm::DS_Error

615 ? diag::err_fe_backend_unsupported

616 : diag::warn_fe_backend_unsupported;

617 Diags.Report(Loc, DiagType) << Msg;

618

619 if (BadDebugInfo)

620

621

622

623

624 Diags.Report(Loc, diag::note_fe_backend_invalid_loc)

626}

627

629 const llvm::DiagnosticInfoOptimizationBase &D, unsigned DiagID) {

630

631 assert(D.getSeverity() == llvm::DS_Remark ||

632 D.getSeverity() == llvm::DS_Warning);

633

636 bool BadDebugInfo = false;

638 std::string Msg;

639 raw_string_ostream MsgStream(Msg);

640

641

642

643 if (Context != nullptr) {

645 MsgStream << D.getMsg();

646 } else {

647 DiagnosticPrinterRawOStream DP(MsgStream);

649 }

650

651 if (D.getHotness())

652 MsgStream << " (hotness: " << *D.getHotness() << ")";

653

655

656 if (BadDebugInfo)

657

658

659

660

661 Diags.Report(Loc, diag::note_fe_backend_invalid_loc)

663}

664

666 const llvm::DiagnosticInfoOptimizationBase &D) {

667

668 if (D.isVerbose() && .getHotness())

669 return;

670

671 if (D.isPassed()) {

672

673

676 } else if (D.isMissed()) {

677

678

679

682 D, diag::remark_fe_backend_optimization_remark_missed);

683 } else {

684 assert(D.isAnalysis() && "Unknown remark type");

685

686 bool ShouldAlwaysPrint = false;

687 if (auto *ORA = dyn_castllvm::OptimizationRemarkAnalysis(&D))

688 ShouldAlwaysPrint = ORA->shouldAlwaysPrint();

689

690 if (ShouldAlwaysPrint ||

693 D, diag::remark_fe_backend_optimization_remark_analysis);

694 }

695}

696

698 const llvm::OptimizationRemarkAnalysisFPCommute &D) {

699

700

701

702

703 if (D.shouldAlwaysPrint() ||

706 D, diag::remark_fe_backend_optimization_remark_analysis_fpcommute);

707}

708

710 const llvm::OptimizationRemarkAnalysisAliasing &D) {

711

712

713

714

715 if (D.shouldAlwaysPrint() ||

718 D, diag::remark_fe_backend_optimization_remark_analysis_aliasing);

719}

720

722 const llvm::DiagnosticInfoOptimizationFailure &D) {

724}

725

729

730

731

732 if (!LocCookie.isValid())

733 return;

734

735 Diags.Report(LocCookie, D.getSeverity() == DiagnosticSeverity::DS_Error

736 ? diag::err_fe_backend_error_attr

737 : diag::warn_fe_backend_warning_attr)

738 << llvm::demangle(D.getFunctionName()) << D.getNote();

739}

740

742 const llvm::DiagnosticInfoMisExpect &D) {

745 bool BadDebugInfo = false;

748

749 Diags.Report(Loc, diag::warn_profile_data_misexpect) << D.getMsg().str();

750

751 if (BadDebugInfo)

752

753

754

755

756 Diags.Report(Loc, diag::note_fe_backend_invalid_loc)

758}

759

760

761

763 unsigned DiagID = diag::err_fe_inline_asm;

764 llvm::DiagnosticSeverity Severity = DI.getSeverity();

765

766 switch (DI.getKind()) {

767 case llvm::DK_InlineAsm:

769 return;

771 break;

772 case llvm::DK_SrcMgr:

774 return;

775 case llvm::DK_StackSize:

777 return;

778 ComputeDiagID(Severity, backend_frame_larger_than, DiagID);

779 break;

780 case llvm::DK_ResourceLimit:

782 return;

783 ComputeDiagID(Severity, backend_resource_limit, DiagID);

784 break;

785 case DK_Linker:

787 break;

788 case llvm::DK_OptimizationRemark:

789

790

792 return;

793 case llvm::DK_OptimizationRemarkMissed:

794

795

797 return;

798 case llvm::DK_OptimizationRemarkAnalysis:

799

800

802 return;

803 case llvm::DK_OptimizationRemarkAnalysisFPCommute:

804

805

807 return;

808 case llvm::DK_OptimizationRemarkAnalysisAliasing:

809

810

812 return;

813 case llvm::DK_MachineOptimizationRemark:

814

815

817 return;

818 case llvm::DK_MachineOptimizationRemarkMissed:

819

820

822 return;

823 case llvm::DK_MachineOptimizationRemarkAnalysis:

824

825

827 return;

828 case llvm::DK_OptimizationFailure:

829

830

832 return;

833 case llvm::DK_Unsupported:

835 return;

836 case llvm::DK_DontCall:

838 return;

839 case llvm::DK_MisExpect:

841 return;

842 default:

843

845 break;

846 }

847 std::string MsgStorage;

848 {

849 raw_string_ostream Stream(MsgStorage);

850 DiagnosticPrinterRawOStream DP(Stream);

851 DI.print(DP);

852 }

853

854 if (DI.getKind() == DK_Linker) {

855 assert(CurLinkModule && "CurLinkModule must be set for linker diagnostics");

856 Diags.Report(DiagID) << CurLinkModule->getModuleIdentifier() << MsgStorage;

857 return;

858 }

859

860

863}

864#undef ComputeDiagID

865

867 : Act(_Act), VMContext(_VMContext ? _VMContext : new LLVMContext),

868 OwnsVMContext(!_VMContext) {}

869

871 TheModule.reset();

872 if (OwnsVMContext)

873 delete VMContext;

874}

875

877 if (!LinkModules.empty())

878 return false;

879

883 if (!BCBuf) {

885 << F.Filename << BCBuf.getError().message();

886 LinkModules.clear();

887 return true;

888 }

889

891 getOwningLazyBitcodeModule(std::move(*BCBuf), *VMContext);

892 if (!ModuleOrErr) {

893 handleAllErrors(ModuleOrErr.takeError(), [&](ErrorInfoBase &EIB) {

894 CI.getDiagnostics().Report(diag::err_cannot_open_file)

895 << F.Filename << EIB.message();

896 });

897 LinkModules.clear();

898 return true;

899 }

900 LinkModules.push_back({std::move(ModuleOrErr.get()), F.PropagateAttrs,

901 F.Internalize, F.LinkFlags});

902 }

903 return false;

904}

905

907

909

911 return;

912

913

915}

916

918 return std::move(TheModule);

919}

920

922 OwnsVMContext = false;

923 return VMContext;

924}

925

928}

929

933 return true;

934}

935

936static std::unique_ptr<raw_pwrite_stream>

938 switch (Action) {

946 return nullptr;

951 }

952

953 llvm_unreachable("Invalid action!");

954}

955

956std::unique_ptr

959 std::unique_ptr<raw_pwrite_stream> OS = CI.takeOutputStream();

960 if (!OS)

962

964 return nullptr;

965

966

967 if (loadLinkModules(CI))

968 return nullptr;

969

971

975

978 InFile, std::move(OS), CoverageInfo));

980

981

982

983 if (CI.getCodeGenOpts().getDebugInfo() != codegenoptions::NoDebugInfo &&

985 std::unique_ptr Callbacks =

989 }

990

993 std::vector<std::unique_ptr> Consumers(2);

994 Consumers[0] = std::make_unique(

997 Consumers[1] = std::move(Result);

998 return std::make_unique(std::move(Consumers));

999 }

1000

1001 return std::move(Result);

1002}

1003

1004std::unique_ptrllvm::Module

1005CodeGenAction::loadModule(MemoryBufferRef MBRef) {

1008

1009 auto DiagErrors = [&](Error E) -> std::unique_ptrllvm::Module {

1010 unsigned DiagID =

1012 handleAllErrors(std::move(E), [&](ErrorInfoBase &EIB) {

1014 });

1015 return {};

1016 };

1017

1018

1019

1020

1022 VMContext->enableDebugTypeODRUniquing();

1023

1025 if (!BMsOrErr)

1026 return DiagErrors(BMsOrErr.takeError());

1027 BitcodeModule *Bm = llvm::lto::findThinLTOModule(*BMsOrErr);

1028

1029

1030

1031

1032 if (!Bm) {

1033 auto M = std::make_uniquellvm::Module("empty", *VMContext);

1035 return M;

1036 }

1038 Bm->parseModule(*VMContext);

1039 if (!MOrErr)

1040 return DiagErrors(MOrErr.takeError());

1041 return std::move(*MOrErr);

1042 }

1043

1044

1045 if (loadLinkModules(CI))

1046 return nullptr;

1047

1048

1049 llvm::SMDiagnostic Err;

1050 if (std::unique_ptrllvm::Module M = parseIR(MBRef, Err, *VMContext))

1051 return M;

1052

1053

1054

1055

1057 if (BMsOrErr && BMsOrErr->size()) {

1058 std::unique_ptrllvm::Module FirstM;

1059 for (auto &BM : *BMsOrErr) {

1061 BM.parseModule(*VMContext);

1062 if (!MOrErr)

1063 return DiagErrors(MOrErr.takeError());

1064 if (FirstM)

1065 LinkModules.push_back({std::move(*MOrErr), false,

1066 false, {}});

1067 else

1068 FirstM = std::move(*MOrErr);

1069 }

1070 if (FirstM)

1071 return FirstM;

1072 }

1073

1074

1075 consumeError(BMsOrErr.takeError());

1076

1077

1078

1079

1081 if (Err.getLineNo() > 0) {

1082 assert(Err.getColumnNo() >= 0);

1083 Loc = SM.translateFileLineCol(SM.getFileEntryForID(SM.getMainFileID()),

1084 Err.getLineNo(), Err.getColumnNo() + 1);

1085 }

1086

1087

1088 StringRef Msg = Err.getMessage();

1089 Msg.consume_front("error: ");

1090

1091 unsigned DiagID =

1093

1095 return {};

1096}

1097

1101 return;

1102 }

1103

1104

1109 std::unique_ptr<raw_pwrite_stream> OS =

1112 return;

1113

1115 FileID FID = SM.getMainFileID();

1116 std::optional MainFile = SM.getBufferOrNone(FID);

1117 if (!MainFile)

1118 return;

1119

1120 TheModule = loadModule(*MainFile);

1121 if (!TheModule)

1122 return;

1123

1125 if (TheModule->getTargetTriple() != TargetOpts.Triple) {

1126 Diagnostics.Report(SourceLocation(), diag::warn_fe_override_module)

1127 << TargetOpts.Triple;

1128 TheModule->setTargetTriple(TargetOpts.Triple);

1129 }

1130

1131 EmbedObject(TheModule.get(), CodeGenOpts, Diagnostics);

1132 EmbedBitcode(TheModule.get(), CodeGenOpts, *MainFile);

1133

1134 LLVMContext &Ctx = TheModule->getContext();

1135

1136

1137

1138 struct RAII {

1139 LLVMContext &Ctx;

1140 std::unique_ptr PrevHandler = Ctx.getDiagnosticHandler();

1141 ~RAII() { Ctx.setDiagnosticHandler(std::move(PrevHandler)); }

1142 } _{Ctx};

1143

1144

1145

1147 std::move(LinkModules), "", nullptr, nullptr,

1148 TheModule.get());

1149

1150

1151 if (!CodeGenOpts.LinkBitcodePostopt && Result.LinkInModules(&*TheModule))

1152 return;

1153

1154

1155

1156 Ctx.setDiscardValueNames(false);

1157 Ctx.setDiagnosticHandler(

1158 std::make_unique(CodeGenOpts, &Result));

1159

1160 Ctx.setDefaultTargetCPU(TargetOpts.CPU);

1161 Ctx.setDefaultTargetFeatures(llvm::join(TargetOpts.Features, ","));

1162

1164 setupLLVMOptimizationRemarks(

1165 Ctx, CodeGenOpts.OptRecordFile, CodeGenOpts.OptRecordPasses,

1166 CodeGenOpts.OptRecordFormat, CodeGenOpts.DiagnosticsWithHotness,

1167 CodeGenOpts.DiagnosticsHotnessThreshold);

1168

1169 if (Error E = OptRecordFileOrErr.takeError()) {

1171 return;

1172 }

1173 std::unique_ptrllvm::ToolOutputFile OptRecordFile =

1174 std::move(*OptRecordFileOrErr);

1175

1178 std::move(OS));

1179 if (OptRecordFile)

1180 OptRecordFile->keep();

1181}

1182

1183

1184

1185void EmitAssemblyAction::anchor() { }

1188

1189void EmitBCAction::anchor() { }

1192

1193void EmitLLVMAction::anchor() { }

1196

1197void EmitLLVMOnlyAction::anchor() { }

1200

1201void EmitCodeGenOnlyAction::anchor() { }

1204

1205void EmitObjAction::anchor() { }

Defines the clang::ASTContext interface.

#define ComputeDiagID(Severity, GroupName, DiagID)

static std::unique_ptr< raw_pwrite_stream > GetOutputStream(CompilerInstance &CI, StringRef InFile, BackendAction Action)

#define ComputeDiagRemarkID(Severity, GroupName, DiagID)

static FullSourceLoc ConvertBackendLocation(const llvm::SMDiagnostic &D, SourceManager &CSM)

ConvertBackendLocation - Convert a location in a temporary llvm::SourceMgr buffer to be a valid FullS...

Defines the C++ Decl subclasses, other than those for templates (found in DeclTemplate....

Defines the clang::FileManager interface and associated types.

Defines the clang::Preprocessor interface.

Defines the SourceManager interface.

Holds long-lived AST nodes (such as types and decls) that can be referred to throughout the semantic ...

SourceManager & getSourceManager()

void ExecuteAction() override

Implement the ExecuteAction interface by running Sema on the already-initialized AST consumer.

llvm::Module * getModule() const

void CompleteExternalDeclaration(DeclaratorDecl *D) override

CompleteExternalDeclaration - Callback invoked at the end of a translation unit to notify the consume...

void OptimizationRemarkHandler(const llvm::DiagnosticInfoOptimizationBase &D)

bool StackSizeDiagHandler(const llvm::DiagnosticInfoStackSize &D)

Specialized handler for StackSize diagnostic.

void HandleVTable(CXXRecordDecl *RD) override

Callback involved at the end of a translation unit to notify the consumer that a vtable for the given...

void HandleTagDeclDefinition(TagDecl *D) override

HandleTagDeclDefinition - This callback is invoked each time a TagDecl (e.g.

bool HandleTopLevelDecl(DeclGroupRef D) override

HandleTopLevelDecl - Handle the specified top-level declaration.

void Initialize(ASTContext &Ctx) override

Initialize - This is called to initialize the consumer, providing the ASTContext.

void HandleInlineFunctionDefinition(FunctionDecl *D) override

This callback is invoked each time an inline (method or friend) function definition in a class is com...

void OptimizationFailureHandler(const llvm::DiagnosticInfoOptimizationFailure &D)

void DiagnosticHandlerImpl(const llvm::DiagnosticInfo &DI)

This function is invoked when the backend needs to report something to the user.

void HandleTagDeclRequiredDefinition(const TagDecl *D) override

This callback is invoked the first time each TagDecl is required to be complete.

void HandleInterestingDecl(DeclGroupRef D) override

HandleInterestingDecl - Handle the specified interesting declaration.

void HandleCXXStaticMemberVarInstantiation(VarDecl *VD) override

HandleCXXStaticMemberVarInstantiation - Tell the consumer that this.

std::optional< FullSourceLoc > getFunctionSourceLocation(const llvm::Function &F) const

bool ResourceLimitDiagHandler(const llvm::DiagnosticInfoResourceLimit &D)

Specialized handler for ResourceLimit diagnostic.

std::unique_ptr< llvm::Module > takeModule()

void AssignInheritanceModel(CXXRecordDecl *RD) override

Callback invoked when an MSInheritanceAttr has been attached to a CXXRecordDecl.

void HandleTranslationUnit(ASTContext &C) override

HandleTranslationUnit - This method is called when the ASTs for entire translation unit have been par...

void CompleteTentativeDefinition(VarDecl *D) override

CompleteTentativeDefinition - Callback invoked at the end of a translation unit to notify the consume...

void UnsupportedDiagHandler(const llvm::DiagnosticInfoUnsupported &D)

Specialized handler for unsupported backend feature diagnostic.

bool InlineAsmDiagHandler(const llvm::DiagnosticInfoInlineAsm &D)

Specialized handler for InlineAsm diagnostic.

bool LinkInModules(llvm::Module *M)

const FullSourceLoc getBestLocationFromDebugLoc(const llvm::DiagnosticInfoWithLocationBase &D, bool &BadDebugInfo, StringRef &Filename, unsigned &Line, unsigned &Column) const

Get the best possible source location to represent a diagnostic that may have associated debug info.

void EmitOptimizationMessage(const llvm::DiagnosticInfoOptimizationBase &D, unsigned DiagID)

Specialized handlers for optimization remarks.

void DontCallDiagHandler(const llvm::DiagnosticInfoDontCall &D)

void MisExpectDiagHandler(const llvm::DiagnosticInfoMisExpect &D)

Specialized handler for misexpect warnings.

CodeGenerator * getCodeGenerator()

void SrcMgrDiagHandler(const llvm::DiagnosticInfoSrcMgr &D)

Specialized handler for diagnostics reported using SMDiagnostic.

BackendConsumer(CompilerInstance &CI, BackendAction Action, IntrusiveRefCntPtr< llvm::vfs::FileSystem > VFS, llvm::LLVMContext &C, SmallVector< LinkModule, 4 > LinkModules, StringRef InFile, std::unique_ptr< raw_pwrite_stream > OS, CoverageSourceInfo *CoverageInfo, llvm::Module *CurLinkModule=nullptr)

Represents a C++ struct/union/class.

bool isMissedOptRemarkEnabled(StringRef PassName) const override

bool handleDiagnostics(const DiagnosticInfo &DI) override

ClangDiagnosticHandler(const CodeGenOptions &CGOpts, BackendConsumer *BCon)

bool isPassedOptRemarkEnabled(StringRef PassName) const override

bool isAnyRemarkEnabled() const override

bool isAnalysisRemarkEnabled(StringRef PassName) const override

std::unique_ptr< ASTConsumer > CreateASTConsumer(CompilerInstance &CI, StringRef InFile) override

Create the AST consumer object for this action, if supported.

CodeGenerator * getCodeGenerator() const

friend class BackendConsumer

void EndSourceFileAction() override

Callback at the end of processing a single input.

bool BeginSourceFileAction(CompilerInstance &CI) override

Callback at the start of processing a single input.

~CodeGenAction() override

CodeGenAction(unsigned _Act, llvm::LLVMContext *_VMContext=nullptr)

Create a new code generation action.

llvm::LLVMContext * takeLLVMContext()

Take the LLVM context used by this action.

BackendConsumer * BEConsumer

bool hasIRSupport() const override

Does this action support use with IR files?

void ExecuteAction() override

Callback to run the program action, using the initialized compiler instance.

std::unique_ptr< llvm::Module > takeModule()

Take the generated LLVM module, for use after the action has been run.

CodeGenOptions - Track various options which control how the code is optimized and passed to the back...

std::string OptRecordFile

The name of the file to which the backend should save YAML optimization records.

std::vector< BitcodeFileToLink > LinkBitcodeFiles

The files specified here are linked in to the module before optimizations.

std::optional< uint64_t > DiagnosticsHotnessThreshold

The minimum hotness value a diagnostic needs in order to be included in optimization diagnostics.

std::optional< uint32_t > DiagnosticsMisExpectTolerance

The maximum percentage profiling weights can deviate from the expected values in order to be included...

std::string OptRecordPasses

The regex that filters the passes that should be saved to the optimization records.

OptRemark OptimizationRemark

Selected optimizations for which we should enable optimization remarks.

std::string ThinLTOIndexFile

Name of the function summary index file to use for ThinLTO function importing.

OptRemark OptimizationRemarkAnalysis

Selected optimizations for which we should enable optimization analyses.

std::string OptRecordFormat

The format used for serializing remarks (default: YAML)

OptRemark OptimizationRemarkMissed

Selected optimizations for which we should enable missed optimization remarks.

static CoverageSourceInfo * setUpCoverageCallbacks(Preprocessor &PP)

The primary public interface to the Clang code generator.

CompilerInstance - Helper class for managing a single instance of the Clang compiler.

DiagnosticsEngine & getDiagnostics() const

Get the current diagnostics engine.

llvm::TimerGroup & getTimerGroup() const

std::unique_ptr< raw_pwrite_stream > createDefaultOutputFile(bool Binary=true, StringRef BaseInput="", StringRef Extension="", bool RemoveFileOnSignal=true, bool CreateMissingDirectories=false, bool ForceUseTemporary=false)

Create the default output file (from the invocation's options) and add it to the list of tracked outp...

llvm::Timer & getFrontendTimer() const

FileManager & getFileManager() const

Return the current file manager to the caller.

InMemoryModuleCache & getModuleCache() const

Preprocessor & getPreprocessor() const

Return the current preprocessor.

TargetOptions & getTargetOpts()

std::unique_ptr< llvm::raw_pwrite_stream > takeOutputStream()

FrontendOptions & getFrontendOpts()

TargetInfo & getTarget() const

llvm::vfs::FileSystem & getVirtualFileSystem() const

LangOptions & getLangOpts()

CodeGenOptions & getCodeGenOpts()

SourceManager & getSourceManager() const

Return the current source manager.

std::unique_ptr< raw_pwrite_stream > createNullOutputFile()

Stores additional source code information like skipped ranges which is required by the coverage mappi...

Decl - This represents one declaration (or definition), e.g.

SourceLocation getLocation() const

void print(raw_ostream &Out, unsigned Indentation=0, bool PrintInstantiation=false) const

Represents a ValueDecl that came out of a declarator.

A little helper class used to produce diagnostics.

Concrete class used by the front-end to report problems and issues.

DiagnosticBuilder Report(SourceLocation Loc, unsigned DiagID)

Issue the message to the client.

unsigned getCustomDiagID(Level L, const char(&FormatString)[N])

Return an ID for a diagnostic with the specified format string and level.

EmitAssemblyAction(llvm::LLVMContext *_VMContext=nullptr)

EmitBCAction(llvm::LLVMContext *_VMContext=nullptr)

EmitCodeGenOnlyAction(llvm::LLVMContext *_VMContext=nullptr)

EmitLLVMAction(llvm::LLVMContext *_VMContext=nullptr)

EmitLLVMOnlyAction(llvm::LLVMContext *_VMContext=nullptr)

EmitObjAction(llvm::LLVMContext *_VMContext=nullptr)

An opaque identifier used by SourceManager which refers to a source file (MemoryBuffer) along with it...

Implements support for file system lookup, file system caching, and directory search management.

llvm::ErrorOr< std::unique_ptr< llvm::MemoryBuffer > > getBufferForFile(FileEntryRef Entry, bool isVolatile=false, bool RequiresNullTerminator=true, std::optional< int64_t > MaybeLimit=std::nullopt, bool IsText=true)

Open the specified file as a MemoryBuffer, returning a new MemoryBuffer if successful,...

OptionalFileEntryRef getOptionalFileRef(StringRef Filename, bool OpenFile=false, bool CacheFailure=true)

Get a FileEntryRef if it exists, without doing anything on error.

llvm::IntrusiveRefCntPtr< llvm::vfs::FileSystem > getVirtualFileSystemPtr() const

InputKind getCurrentFileKind() const

CompilerInstance & getCompilerInstance() const

StringRef getCurrentFileOrBufferName() const

unsigned GenReducedBMI

Whether to generate reduced BMI for C++20 named modules.

std::string ModuleOutputPath

Output Path for module output file.

A SourceLocation and its associated SourceManager.

Represents a function declaration or definition.

@ CMK_ModuleInterface

Compiling a C++ modules interface unit.

void addPPCallbacks(std::unique_ptr< PPCallbacks > C)

PrettyStackTraceDecl - If a crash occurs, indicate that it happened when doing something to a specifi...

Encodes a location in the source.

static SourceLocation getFromRawEncoding(UIntTy Encoding)

Turn a raw encoding of a SourceLocation object into a real SourceLocation.

bool isValid() const

Return true if this is a valid SourceLocation object.

SourceLocation getLocWithOffset(IntTy Offset) const

Return a source location with the specified offset from this SourceLocation.

This class handles loading and caching of source files into memory.

FileID createFileID(FileEntryRef SourceFile, SourceLocation IncludePos, SrcMgr::CharacteristicKind FileCharacter, int LoadedID=0, SourceLocation::UIntTy LoadedOffset=0)

Create a new FileID that represents the specified file being #included from the specified IncludePosi...

FileManager & getFileManager() const

SourceLocation translateFileLineCol(const FileEntry *SourceFile, unsigned Line, unsigned Col) const

Get the source location for the given file:line:col triplet.

SourceLocation getLocForStartOfFile(FileID FID) const

Return the source location corresponding to the first byte of the specified file.

A trivial tuple used to represent a source range.

void AddString(StringRef V) const

Represents the declaration of a struct/union/class/enum.

const char * getDataLayoutString() const

Options for controlling the target.

std::string Triple

The name of the target triple to compile for.

std::vector< std::string > Features

The list of target specific features to enable or disable – this should be a list of strings starting...

std::string CPU

If given, the name of the target CPU to generate code for.

Represents a variable declaration or definition.

Defines the clang::TargetInfo interface.

void mergeDefaultFunctionDefinitionAttributes(llvm::Function &F, const CodeGenOptions &CodeGenOpts, const LangOptions &LangOpts, const TargetOptions &TargetOpts, bool WillInternalize)

Adds attributes to F according to our CodeGenOpts and LangOpts, as though we had emitted it ourselves...

The JSON file list parser is used to communicate input to InstallAPI.

void EmbedObject(llvm::Module *M, const CodeGenOptions &CGOpts, DiagnosticsEngine &Diags)

void emitBackendOutput(CompilerInstance &CI, StringRef TDesc, llvm::Module *M, BackendAction Action, llvm::IntrusiveRefCntPtr< llvm::vfs::FileSystem > VFS, std::unique_ptr< raw_pwrite_stream > OS, BackendConsumer *BC=nullptr)

static void reportOptRecordError(Error E, DiagnosticsEngine &Diags, const CodeGenOptions &CodeGenOpts)

CodeGenerator * CreateLLVMCodeGen(DiagnosticsEngine &Diags, llvm::StringRef ModuleName, IntrusiveRefCntPtr< llvm::vfs::FileSystem > FS, const HeaderSearchOptions &HeaderSearchOpts, const PreprocessorOptions &PreprocessorOpts, const CodeGenOptions &CGO, llvm::LLVMContext &C, CoverageSourceInfo *CoverageInfo=nullptr)

CreateLLVMCodeGen - Create a CodeGenerator instance.

@ Result

The result type of a method or function.

void EmbedBitcode(llvm::Module *M, const CodeGenOptions &CGOpts, llvm::MemoryBufferRef Buf)

@ Backend_EmitAssembly

Emit native assembly files.

@ Backend_EmitLL

Emit human-readable LLVM assembly.

@ Backend_EmitBC

Emit LLVM bitcode files.

@ Backend_EmitObj

Emit native object files.

@ Backend_EmitMCNull

Run CodeGen, but don't emit anything.

@ Backend_EmitNothing

Don't emit anything (benchmarking mode)

Diagnostic wrappers for TextAPI types for error reporting.

hash_code hash_value(const clang::tooling::dependencies::ModuleID &ID)