1 //===--- CompilerInvocation.cpp -------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "clang/Frontend/CompilerInvocation.h"
11 #include "TestModuleFileExtension.h"
12 #include "clang/Basic/Builtins.h"
13 #include "clang/Basic/FileManager.h"
14 #include "clang/Basic/Version.h"
15 #include "clang/Config/config.h"
16 #include "clang/Driver/DriverDiagnostic.h"
17 #include "clang/Driver/Options.h"
18 #include "clang/Driver/Util.h"
19 #include "clang/Frontend/FrontendDiagnostic.h"
20 #include "clang/Frontend/LangStandard.h"
21 #include "clang/Frontend/Utils.h"
22 #include "clang/Lex/HeaderSearchOptions.h"
23 #include "clang/Lex/PreprocessorOptions.h"
24 #include "clang/Serialization/ASTReader.h"
25 #include "clang/Serialization/ModuleFileExtension.h"
26 #include "llvm/ADT/Hashing.h"
27 #include "llvm/ADT/STLExtras.h"
28 #include "llvm/ADT/SmallVector.h"
29 #include "llvm/ADT/StringExtras.h"
30 #include "llvm/ADT/StringSwitch.h"
31 #include "llvm/ADT/Triple.h"
32 #include "llvm/Linker/Linker.h"
33 #include "llvm/Option/Arg.h"
34 #include "llvm/Option/ArgList.h"
35 #include "llvm/Option/OptTable.h"
36 #include "llvm/Option/Option.h"
37 #include "llvm/ProfileData/InstrProfReader.h"
38 #include "llvm/Support/CodeGen.h"
39 #include "llvm/Support/ErrorHandling.h"
40 #include "llvm/Support/FileSystem.h"
41 #include "llvm/Support/Host.h"
42 #include "llvm/Support/Path.h"
43 #include "llvm/Support/Process.h"
44 #include "llvm/Target/TargetOptions.h"
45 #include "llvm/Support/ScopedPrinter.h"
49 #include <system_error>
50 using namespace clang;
52 //===----------------------------------------------------------------------===//
54 //===----------------------------------------------------------------------===//
56 CompilerInvocationBase::CompilerInvocationBase()
57 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
58 DiagnosticOpts(new DiagnosticOptions()),
59 HeaderSearchOpts(new HeaderSearchOptions()),
60 PreprocessorOpts(new PreprocessorOptions()) {}
62 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
63 : LangOpts(new LangOptions(*X.getLangOpts())),
64 TargetOpts(new TargetOptions(X.getTargetOpts())),
65 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
66 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
67 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
69 CompilerInvocationBase::~CompilerInvocationBase() {}
71 //===----------------------------------------------------------------------===//
72 // Deserialization (from args)
73 //===----------------------------------------------------------------------===//
75 using namespace clang::driver;
76 using namespace clang::driver::options;
77 using namespace llvm::opt;
81 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
82 DiagnosticsEngine &Diags) {
83 unsigned DefaultOpt = 0;
84 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
87 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
88 if (A->getOption().matches(options::OPT_O0))
91 if (A->getOption().matches(options::OPT_Ofast))
94 assert (A->getOption().matches(options::OPT_O));
96 StringRef S(A->getValue());
97 if (S == "s" || S == "z" || S.empty())
103 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
109 static unsigned getOptimizationLevelSize(ArgList &Args) {
110 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
111 if (A->getOption().matches(options::OPT_O)) {
112 switch (A->getValue()[0]) {
125 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
126 OptSpecifier GroupWithValue,
127 std::vector<std::string> &Diagnostics) {
128 for (Arg *A : Args.filtered(Group)) {
129 if (A->getOption().getKind() == Option::FlagClass) {
130 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
131 // its name (minus the "W" or "R" at the beginning) to the warning list.
132 Diagnostics.push_back(A->getOption().getName().drop_front(1));
133 } else if (A->getOption().matches(GroupWithValue)) {
134 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group.
135 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-"));
137 // Otherwise, add its value (for OPT_W_Joined and similar).
138 for (const char *Arg : A->getValues())
139 Diagnostics.emplace_back(Arg);
144 static void getAllNoBuiltinFuncValues(ArgList &Args,
145 std::vector<std::string> &Funcs) {
146 SmallVector<const char *, 8> Values;
147 for (const auto &Arg : Args) {
148 const Option &O = Arg->getOption();
149 if (O.matches(options::OPT_fno_builtin_)) {
150 const char *FuncName = Arg->getValue();
151 if (Builtin::Context::isBuiltinFunc(FuncName))
152 Values.push_back(FuncName);
155 Funcs.insert(Funcs.end(), Values.begin(), Values.end());
158 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
159 DiagnosticsEngine &Diags) {
160 using namespace options;
162 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
163 StringRef Name = A->getValue();
164 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
165 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
166 .Case(CMDFLAG, NAME##Model)
167 #include "clang/StaticAnalyzer/Core/Analyses.def"
169 if (Value == NumStores) {
170 Diags.Report(diag::err_drv_invalid_value)
171 << A->getAsString(Args) << Name;
174 Opts.AnalysisStoreOpt = Value;
178 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
179 StringRef Name = A->getValue();
180 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
181 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
182 .Case(CMDFLAG, NAME##Model)
183 #include "clang/StaticAnalyzer/Core/Analyses.def"
184 .Default(NumConstraints);
185 if (Value == NumConstraints) {
186 Diags.Report(diag::err_drv_invalid_value)
187 << A->getAsString(Args) << Name;
190 Opts.AnalysisConstraintsOpt = Value;
194 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
195 StringRef Name = A->getValue();
196 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
197 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
198 .Case(CMDFLAG, PD_##NAME)
199 #include "clang/StaticAnalyzer/Core/Analyses.def"
200 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
201 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
202 Diags.Report(diag::err_drv_invalid_value)
203 << A->getAsString(Args) << Name;
206 Opts.AnalysisDiagOpt = Value;
210 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
211 StringRef Name = A->getValue();
212 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
213 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
215 #include "clang/StaticAnalyzer/Core/Analyses.def"
216 .Default(NumPurgeModes);
217 if (Value == NumPurgeModes) {
218 Diags.Report(diag::err_drv_invalid_value)
219 << A->getAsString(Args) << Name;
222 Opts.AnalysisPurgeOpt = Value;
226 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
227 StringRef Name = A->getValue();
228 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
229 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
231 #include "clang/StaticAnalyzer/Core/Analyses.def"
232 .Default(NumInliningModes);
233 if (Value == NumInliningModes) {
234 Diags.Report(diag::err_drv_invalid_value)
235 << A->getAsString(Args) << Name;
238 Opts.InliningMode = Value;
242 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
243 Opts.ShowEnabledCheckerList = Args.hasArg(OPT_analyzer_list_enabled_checkers);
244 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks);
246 Opts.visualizeExplodedGraphWithGraphViz =
247 Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
248 Opts.visualizeExplodedGraphWithUbiGraph =
249 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
250 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
251 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
252 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
253 Opts.AnalyzeNestedBlocks =
254 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
255 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume);
256 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
257 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
258 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
259 Opts.maxBlockVisitOnPath =
260 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags);
261 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
262 Opts.InlineMaxStackDepth =
263 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth,
264 Opts.InlineMaxStackDepth, Diags);
266 Opts.CheckersControlList.clear();
268 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) {
270 bool enable = (A->getOption().getID() == OPT_analyzer_checker);
271 // We can have a list of comma separated checker names, e.g:
272 // '-analyzer-checker=cocoa,unix'
273 StringRef checkerList = A->getValue();
274 SmallVector<StringRef, 4> checkers;
275 checkerList.split(checkers, ",");
276 for (StringRef checker : checkers)
277 Opts.CheckersControlList.emplace_back(checker, enable);
280 // Go through the analyzer configuration options.
281 for (const Arg *A : Args.filtered(OPT_analyzer_config)) {
283 // We can have a list of comma separated config names, e.g:
284 // '-analyzer-config key1=val1,key2=val2'
285 StringRef configList = A->getValue();
286 SmallVector<StringRef, 4> configVals;
287 configList.split(configVals, ",");
288 for (unsigned i = 0, e = configVals.size(); i != e; ++i) {
290 std::tie(key, val) = configVals[i].split("=");
292 Diags.Report(SourceLocation(),
293 diag::err_analyzer_config_no_value) << configVals[i];
297 if (val.find('=') != StringRef::npos) {
298 Diags.Report(SourceLocation(),
299 diag::err_analyzer_config_multiple_values)
304 Opts.Config[key] = val;
311 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
312 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
313 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
317 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
318 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
319 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments);
322 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) {
323 if (Arg *A = Args.getLastArg(OPT_mcode_model)) {
324 StringRef Value = A->getValue();
325 if (Value == "small" || Value == "kernel" || Value == "medium" ||
328 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
333 /// \brief Create a new Regex instance out of the string value in \p RpassArg.
334 /// It returns a pointer to the newly generated Regex instance.
335 static std::shared_ptr<llvm::Regex>
336 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args,
338 StringRef Val = RpassArg->getValue();
339 std::string RegexError;
340 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
341 if (!Pattern->isValid(RegexError)) {
342 Diags.Report(diag::err_drv_optimization_remark_pattern)
343 << RegexError << RpassArg->getAsString(Args);
349 static bool parseDiagnosticLevelMask(StringRef FlagName,
350 const std::vector<std::string> &Levels,
351 DiagnosticsEngine *Diags,
352 DiagnosticLevelMask &M) {
354 for (const auto &Level : Levels) {
355 DiagnosticLevelMask const PM =
356 llvm::StringSwitch<DiagnosticLevelMask>(Level)
357 .Case("note", DiagnosticLevelMask::Note)
358 .Case("remark", DiagnosticLevelMask::Remark)
359 .Case("warning", DiagnosticLevelMask::Warning)
360 .Case("error", DiagnosticLevelMask::Error)
361 .Default(DiagnosticLevelMask::None);
362 if (PM == DiagnosticLevelMask::None) {
365 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level;
372 static void parseSanitizerKinds(StringRef FlagName,
373 const std::vector<std::string> &Sanitizers,
374 DiagnosticsEngine &Diags, SanitizerSet &S) {
375 for (const auto &Sanitizer : Sanitizers) {
376 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false);
378 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
384 // Set the profile kind for fprofile-instrument.
385 static void setPGOInstrumentor(CodeGenOptions &Opts, ArgList &Args,
386 DiagnosticsEngine &Diags) {
387 Arg *A = Args.getLastArg(OPT_fprofile_instrument_EQ);
390 StringRef S = A->getValue();
391 unsigned I = llvm::StringSwitch<unsigned>(S)
392 .Case("none", CodeGenOptions::ProfileNone)
393 .Case("clang", CodeGenOptions::ProfileClangInstr)
394 .Case("llvm", CodeGenOptions::ProfileIRInstr)
397 Diags.Report(diag::err_drv_invalid_pgo_instrumentor) << A->getAsString(Args)
401 CodeGenOptions::ProfileInstrKind Instrumentor =
402 static_cast<CodeGenOptions::ProfileInstrKind>(I);
403 Opts.setProfileInstr(Instrumentor);
406 // Set the profile kind using fprofile-instrument-use-path.
407 static void setPGOUseInstrumentor(CodeGenOptions &Opts,
408 const Twine &ProfileName) {
409 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName);
410 // In error, return silently and let Clang PGOUse report the error message.
411 if (auto E = ReaderOrErr.takeError()) {
412 llvm::consumeError(std::move(E));
413 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
416 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader =
417 std::move(ReaderOrErr.get());
418 if (PGOReader->isIRLevelProfile())
419 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr);
421 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
424 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
425 DiagnosticsEngine &Diags,
426 const TargetOptions &TargetOpts) {
427 using namespace options;
429 llvm::Triple Triple = llvm::Triple(TargetOpts.Triple);
431 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
432 // TODO: This could be done in Driver
433 unsigned MaxOptLevel = 3;
434 if (OptimizationLevel > MaxOptLevel) {
435 // If the optimization level is not supported, fall back on the default
437 Diags.Report(diag::warn_drv_optimization_value)
438 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
439 OptimizationLevel = MaxOptLevel;
441 Opts.OptimizationLevel = OptimizationLevel;
443 // At O0 we want to fully disable inlining outside of cases marked with
444 // 'alwaysinline' that are required for correctness.
445 Opts.setInlining((Opts.OptimizationLevel == 0)
446 ? CodeGenOptions::OnlyAlwaysInlining
447 : CodeGenOptions::NormalInlining);
448 // Explicit inlining flags can disable some or all inlining even at
449 // optimization levels above zero.
450 if (Arg *InlineArg = Args.getLastArg(
451 options::OPT_finline_functions, options::OPT_finline_hint_functions,
452 options::OPT_fno_inline_functions, options::OPT_fno_inline)) {
453 if (Opts.OptimizationLevel > 0) {
454 const Option &InlineOpt = InlineArg->getOption();
455 if (InlineOpt.matches(options::OPT_finline_functions))
456 Opts.setInlining(CodeGenOptions::NormalInlining);
457 else if (InlineOpt.matches(options::OPT_finline_hint_functions))
458 Opts.setInlining(CodeGenOptions::OnlyHintInlining);
460 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining);
464 Opts.ExperimentalNewPassManager = Args.hasFlag(
465 OPT_fexperimental_new_pass_manager, OPT_fno_experimental_new_pass_manager,
466 /* Default */ false);
468 if (Arg *A = Args.getLastArg(OPT_fveclib)) {
469 StringRef Name = A->getValue();
470 if (Name == "Accelerate")
471 Opts.setVecLib(CodeGenOptions::Accelerate);
472 else if (Name == "SVML")
473 Opts.setVecLib(CodeGenOptions::SVML);
474 else if (Name == "none")
475 Opts.setVecLib(CodeGenOptions::NoLibrary);
477 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
480 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) {
482 llvm::StringSwitch<unsigned>(A->getValue())
483 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly)
484 .Case("limited", codegenoptions::LimitedDebugInfo)
485 .Case("standalone", codegenoptions::FullDebugInfo)
488 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
491 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val));
493 if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) {
494 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue())
495 .Case("gdb", unsigned(llvm::DebuggerKind::GDB))
496 .Case("lldb", unsigned(llvm::DebuggerKind::LLDB))
497 .Case("sce", unsigned(llvm::DebuggerKind::SCE))
500 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
503 Opts.setDebuggerTuning(static_cast<llvm::DebuggerKind>(Val));
505 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags);
506 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
507 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview);
508 Opts.WholeProgramVTables = Args.hasArg(OPT_fwhole_program_vtables);
509 Opts.LTOVisibilityPublicStd = Args.hasArg(OPT_flto_visibility_public_std);
510 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
511 Opts.SplitDwarfInlining = !Args.hasArg(OPT_fno_split_dwarf_inlining);
512 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs);
513 Opts.DebugExplicitImport = Triple.isPS4CPU();
515 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ))
516 Opts.DebugPrefixMap.insert(StringRef(Arg).split('='));
519 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists))
520 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists;
522 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes);
523 Opts.DisableLifetimeMarkers = Args.hasArg(OPT_disable_lifetimemarkers);
524 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
525 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
526 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
527 OPT_fuse_register_sized_bitfield_access);
528 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
529 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
530 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
531 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
532 Opts.NoCommon = Args.hasArg(OPT_fno_common);
533 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
534 Opts.OptimizeSize = getOptimizationLevelSize(Args);
535 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
536 Args.hasArg(OPT_ffreestanding));
537 if (Opts.SimplifyLibCalls)
538 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
540 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
541 (Opts.OptimizationLevel > 1));
542 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
544 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
545 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
546 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
548 setPGOInstrumentor(Opts, Args, Diags);
549 Opts.InstrProfileOutput =
550 Args.getLastArgValue(OPT_fprofile_instrument_path_EQ);
551 Opts.ProfileInstrumentUsePath =
552 Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ);
553 if (!Opts.ProfileInstrumentUsePath.empty())
554 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath);
556 Opts.CoverageMapping =
557 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false);
558 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
559 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
560 Opts.PreserveAsmComments = !Args.hasArg(OPT_fno_preserve_as_comments);
561 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
562 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
563 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
564 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
565 Opts.CodeModel = getCodeModel(Args, Diags);
566 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
568 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg));
569 Opts.DisableFree = Args.hasArg(OPT_disable_free);
570 Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names);
571 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
572 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
573 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
574 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
575 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
576 Args.hasArg(OPT_cl_finite_math_only) ||
577 Args.hasArg(OPT_cl_fast_relaxed_math));
578 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
579 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
580 Args.hasArg(OPT_cl_finite_math_only) ||
581 Args.hasArg(OPT_cl_fast_relaxed_math));
582 Opts.NoSignedZeros = (Args.hasArg(OPT_fno_signed_zeros) ||
583 Args.hasArg(OPT_cl_no_signed_zeros));
584 Opts.FlushDenorm = Args.hasArg(OPT_cl_denorms_are_zero);
585 Opts.CorrectlyRoundedDivSqrt =
586 Args.hasArg(OPT_cl_fp32_correctly_rounded_divide_sqrt);
587 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math);
588 Opts.NoTrappingMath = Args.hasArg(OPT_fno_trapping_math);
589 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
590 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
591 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
592 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
593 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
594 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
595 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
596 Opts.IncrementalLinkerCompatible =
597 Args.hasArg(OPT_mincremental_linker_compatible);
598 Opts.PIECopyRelocations =
599 Args.hasArg(OPT_mpie_copy_relocations);
600 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
601 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
602 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
603 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
604 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
605 Opts.StrictReturn = !Args.hasArg(OPT_fno_strict_return);
606 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers);
607 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
608 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
609 Args.hasArg(OPT_cl_fast_relaxed_math);
610 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
611 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
612 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
613 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
614 Diags.Report(diag::err_drv_invalid_value)
615 << Args.getLastArg(OPT_mthread_model)->getAsString(Args)
617 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
618 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
620 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
621 OPT_fno_function_sections, false);
622 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
623 OPT_fno_data_sections, false);
624 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names,
625 OPT_fno_unique_section_names, true);
627 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
629 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables);
631 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ);
632 const Arg *A = Args.getLastArg(OPT_flto, OPT_flto_EQ);
633 Opts.EmitSummaryIndex = A && A->containsValue("thin");
634 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) {
635 if (IK != IK_LLVM_IR)
636 Diags.Report(diag::err_drv_argument_only_allowed_with)
637 << A->getAsString(Args) << "-x ir";
638 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ);
641 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile);
643 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
644 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
645 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
647 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
648 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
650 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
651 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
652 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
653 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
654 Opts.CoverageDataFile = Args.getLastArgValue(OPT_coverage_data_file);
655 Opts.CoverageNotesFile = Args.getLastArgValue(OPT_coverage_notes_file);
656 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
657 Opts.CoverageNoFunctionNamesInData =
658 Args.hasArg(OPT_coverage_no_function_names_in_data);
659 Opts.CoverageExitBlockBeforeBody =
660 Args.hasArg(OPT_coverage_exit_block_before_body);
661 if (Args.hasArg(OPT_coverage_version_EQ)) {
662 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
663 if (CoverageVersion.size() != 4) {
664 Diags.Report(diag::err_drv_invalid_value)
665 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
668 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
672 // Handle -fembed-bitcode option.
673 if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) {
674 StringRef Name = A->getValue();
675 unsigned Model = llvm::StringSwitch<unsigned>(Name)
676 .Case("off", CodeGenOptions::Embed_Off)
677 .Case("all", CodeGenOptions::Embed_All)
678 .Case("bitcode", CodeGenOptions::Embed_Bitcode)
679 .Case("marker", CodeGenOptions::Embed_Marker)
682 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
685 Opts.setEmbedBitcode(
686 static_cast<CodeGenOptions::EmbedBitcodeKind>(Model));
688 // FIXME: For backend options that are not yet recorded as function
689 // attributes in the IR, keep track of them so we can embed them in a
690 // separate data section and use them when building the bitcode.
691 if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) {
692 for (const auto &A : Args) {
693 // Do not encode output and input.
694 if (A->getOption().getID() == options::OPT_o ||
695 A->getOption().getID() == options::OPT_INPUT ||
696 A->getOption().getID() == options::OPT_x ||
697 A->getOption().getID() == options::OPT_fembed_bitcode ||
698 (A->getOption().getGroup().isValid() &&
699 A->getOption().getGroup().getID() == options::OPT_W_Group))
702 A->render(Args, ASL);
703 for (const auto &arg : ASL) {
704 StringRef ArgStr(arg);
705 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end());
706 // using \00 to seperate each commandline options.
707 Opts.CmdArgs.push_back('\0');
712 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
713 Opts.XRayInstrumentFunctions = Args.hasArg(OPT_fxray_instrument);
714 Opts.XRayInstructionThreshold =
715 getLastArgIntValue(Args, OPT_fxray_instruction_threshold_, 200, Diags);
716 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
717 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
718 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
719 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations);
720 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
721 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) {
722 unsigned LinkFlags = llvm::Linker::Flags::None;
723 if (A->getOption().matches(OPT_mlink_cuda_bitcode))
724 LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded |
725 llvm::Linker::Flags::InternalizeLinkedSymbols;
726 Opts.LinkBitcodeFiles.push_back(std::make_pair(LinkFlags, A->getValue()));
728 Opts.SanitizeCoverageType =
729 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags);
730 Opts.SanitizeCoverageIndirectCalls =
731 Args.hasArg(OPT_fsanitize_coverage_indirect_calls);
732 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb);
733 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp);
734 Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div);
735 Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep);
736 Opts.SanitizeCoverage8bitCounters =
737 Args.hasArg(OPT_fsanitize_coverage_8bit_counters);
738 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc);
739 Opts.SanitizeCoverageTracePCGuard =
740 Args.hasArg(OPT_fsanitize_coverage_trace_pc_guard);
741 Opts.SanitizeMemoryTrackOrigins =
742 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
743 Opts.SanitizeMemoryUseAfterDtor =
744 Args.hasArg(OPT_fsanitize_memory_use_after_dtor);
745 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso);
746 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats);
747 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_after_scope,
748 OPT_fno_sanitize_address_use_after_scope)) {
749 Opts.SanitizeAddressUseAfterScope =
750 A->getOption().getID() == OPT_fsanitize_address_use_after_scope;
753 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
754 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
755 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
756 StringRef Val = A->getValue();
757 unsigned StackAlignment = Opts.StackAlignment;
758 Val.getAsInteger(10, StackAlignment);
759 Opts.StackAlignment = StackAlignment;
762 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) {
763 StringRef Val = A->getValue();
764 unsigned StackProbeSize = Opts.StackProbeSize;
765 Val.getAsInteger(0, StackProbeSize);
766 Opts.StackProbeSize = StackProbeSize;
769 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
770 StringRef Name = A->getValue();
771 unsigned Method = llvm::StringSwitch<unsigned>(Name)
772 .Case("legacy", CodeGenOptions::Legacy)
773 .Case("non-legacy", CodeGenOptions::NonLegacy)
774 .Case("mixed", CodeGenOptions::Mixed)
777 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
780 Opts.setObjCDispatchMethod(
781 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
786 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false);
788 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
789 StringRef Name = A->getValue();
790 unsigned Model = llvm::StringSwitch<unsigned>(Name)
791 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
792 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
793 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
794 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
797 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
800 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
804 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
805 StringRef Val = A->getValue();
807 Opts.setFPContractMode(CodeGenOptions::FPC_Fast);
808 else if (Val == "on")
809 Opts.setFPContractMode(CodeGenOptions::FPC_On);
810 else if (Val == "off")
811 Opts.setFPContractMode(CodeGenOptions::FPC_Off);
813 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
816 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) {
817 StringRef Val = A->getValue();
819 Opts.FPDenormalMode = "ieee";
820 else if (Val == "preserve-sign")
821 Opts.FPDenormalMode = "preserve-sign";
822 else if (Val == "positive-zero")
823 Opts.FPDenormalMode = "positive-zero";
825 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
828 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
829 if (A->getOption().matches(OPT_fpcc_struct_return)) {
830 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
832 assert(A->getOption().matches(OPT_freg_struct_return));
833 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
837 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
838 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option);
839 bool NeedLocTracking = false;
841 Opts.OptRecordFile = Args.getLastArgValue(OPT_opt_record_file);
842 if (!Opts.OptRecordFile.empty())
843 NeedLocTracking = true;
845 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
846 Opts.OptimizationRemarkPattern =
847 GenerateOptimizationRemarkRegex(Diags, Args, A);
848 NeedLocTracking = true;
851 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
852 Opts.OptimizationRemarkMissedPattern =
853 GenerateOptimizationRemarkRegex(Diags, Args, A);
854 NeedLocTracking = true;
857 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
858 Opts.OptimizationRemarkAnalysisPattern =
859 GenerateOptimizationRemarkRegex(Diags, Args, A);
860 NeedLocTracking = true;
863 Opts.DiagnosticsWithHotness =
864 Args.hasArg(options::OPT_fdiagnostics_show_hotness);
865 if (Opts.DiagnosticsWithHotness &&
866 Opts.getProfileUse() == CodeGenOptions::ProfileNone)
867 Diags.Report(diag::warn_drv_fdiagnostics_show_hotness_requires_pgo);
869 // If the user requested to use a sample profile for PGO, then the
870 // backend will need to track source location information so the profile
871 // can be incorporated into the IR.
872 if (!Opts.SampleProfileFile.empty())
873 NeedLocTracking = true;
875 // If the user requested a flag that requires source locations available in
876 // the backend, make sure that the backend tracks source location information.
877 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo)
878 Opts.setDebugInfo(codegenoptions::LocTrackingOnly);
880 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
882 // Parse -fsanitize-recover= arguments.
883 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
884 parseSanitizerKinds("-fsanitize-recover=",
885 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
886 Opts.SanitizeRecover);
887 parseSanitizerKinds("-fsanitize-trap=",
888 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags,
891 Opts.CudaGpuBinaryFileNames =
892 Args.getAllArgValues(OPT_fcuda_include_gpubinary);
894 Opts.Backchain = Args.hasArg(OPT_mbackchain);
896 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue(
897 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags);
902 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
904 using namespace options;
905 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
906 Opts.Targets = Args.getAllArgValues(OPT_MT);
907 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
908 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
909 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
910 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
911 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
912 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
913 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
914 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
915 Opts.ModuleDependencyOutputDir =
916 Args.getLastArgValue(OPT_module_dependency_dir);
917 if (Args.hasArg(OPT_MV))
918 Opts.OutputFormat = DependencyOutputFormat::NMake;
919 // Add sanitizer blacklists as extra dependencies.
920 // They won't be discovered by the regular preprocessor, so
921 // we let make / ninja to know about this implicit dependency.
922 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry);
923 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
924 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(),
928 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) {
929 // Color diagnostics default to auto ("on" if terminal supports) in the driver
930 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color.
931 // Support both clang's -f[no-]color-diagnostics and gcc's
932 // -f[no-]diagnostics-colors[=never|always|auto].
937 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off;
938 for (Arg *A : Args) {
939 const Option &O = A->getOption();
940 if (O.matches(options::OPT_fcolor_diagnostics) ||
941 O.matches(options::OPT_fdiagnostics_color)) {
942 ShowColors = Colors_On;
943 } else if (O.matches(options::OPT_fno_color_diagnostics) ||
944 O.matches(options::OPT_fno_diagnostics_color)) {
945 ShowColors = Colors_Off;
946 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
947 StringRef Value(A->getValue());
948 if (Value == "always")
949 ShowColors = Colors_On;
950 else if (Value == "never")
951 ShowColors = Colors_Off;
952 else if (Value == "auto")
953 ShowColors = Colors_Auto;
956 return ShowColors == Colors_On ||
957 (ShowColors == Colors_Auto &&
958 llvm::sys::Process::StandardErrHasColors());
961 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
962 DiagnosticsEngine *Diags,
963 bool DefaultDiagColor, bool DefaultShowOpt) {
964 using namespace options;
967 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
969 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
970 Opts.DiagnosticSerializationFile = A->getValue();
971 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
972 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
973 Opts.Pedantic = Args.hasArg(OPT_pedantic);
974 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
975 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
976 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor);
977 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
980 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
981 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
982 Opts.AbsolutePath = Args.hasArg(OPT_fdiagnostics_absolute_paths);
983 Opts.ShowOptionNames =
984 Args.hasFlag(OPT_fdiagnostics_show_option,
985 OPT_fno_diagnostics_show_option, DefaultShowOpt);
987 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
989 // Default behavior is to not to show note include stacks.
990 Opts.ShowNoteIncludeStack = false;
991 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
992 OPT_fno_diagnostics_show_note_include_stack))
993 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
994 Opts.ShowNoteIncludeStack = true;
996 StringRef ShowOverloads =
997 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
998 if (ShowOverloads == "best")
999 Opts.setShowOverloads(Ovl_Best);
1000 else if (ShowOverloads == "all")
1001 Opts.setShowOverloads(Ovl_All);
1005 Diags->Report(diag::err_drv_invalid_value)
1006 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1010 StringRef ShowCategory =
1011 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1012 if (ShowCategory == "none")
1013 Opts.ShowCategories = 0;
1014 else if (ShowCategory == "id")
1015 Opts.ShowCategories = 1;
1016 else if (ShowCategory == "name")
1017 Opts.ShowCategories = 2;
1021 Diags->Report(diag::err_drv_invalid_value)
1022 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1027 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1028 if (Format == "clang")
1029 Opts.setFormat(DiagnosticOptions::Clang);
1030 else if (Format == "msvc")
1031 Opts.setFormat(DiagnosticOptions::MSVC);
1032 else if (Format == "msvc-fallback") {
1033 Opts.setFormat(DiagnosticOptions::MSVC);
1034 Opts.CLFallbackMode = true;
1035 } else if (Format == "vi")
1036 Opts.setFormat(DiagnosticOptions::Vi);
1040 Diags->Report(diag::err_drv_invalid_value)
1041 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1045 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1046 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1047 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
1048 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1049 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None;
1050 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=",
1051 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ),
1053 if (Args.hasArg(OPT_verify_ignore_unexpected))
1054 DiagMask = DiagnosticLevelMask::All;
1055 Opts.setVerifyIgnoreUnexpected(DiagMask);
1056 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
1057 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
1058 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
1059 Opts.MacroBacktraceLimit =
1060 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
1061 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1062 Opts.TemplateBacktraceLimit = getLastArgIntValue(
1063 Args, OPT_ftemplate_backtrace_limit,
1064 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
1065 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
1066 Args, OPT_fconstexpr_backtrace_limit,
1067 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
1068 Opts.SpellCheckingLimit = getLastArgIntValue(
1069 Args, OPT_fspell_checking_limit,
1070 DiagnosticOptions::DefaultSpellCheckingLimit, Diags);
1071 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
1072 DiagnosticOptions::DefaultTabStop, Diags);
1073 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1074 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1076 Diags->Report(diag::warn_ignoring_ftabstop_value)
1077 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1079 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
1080 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
1081 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
1086 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1087 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1090 /// Parse the argument to the -ftest-module-file-extension
1091 /// command-line argument.
1093 /// \returns true on error, false on success.
1094 static bool parseTestModuleFileExtensionArg(StringRef Arg,
1095 std::string &BlockName,
1096 unsigned &MajorVersion,
1097 unsigned &MinorVersion,
1099 std::string &UserInfo) {
1100 SmallVector<StringRef, 5> Args;
1101 Arg.split(Args, ':', 5);
1102 if (Args.size() < 5)
1105 BlockName = Args[0];
1106 if (Args[1].getAsInteger(10, MajorVersion)) return true;
1107 if (Args[2].getAsInteger(10, MinorVersion)) return true;
1108 if (Args[3].getAsInteger(2, Hashed)) return true;
1109 if (Args.size() > 4)
1114 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1115 DiagnosticsEngine &Diags,
1116 bool &IsHeaderFile) {
1117 using namespace options;
1118 Opts.ProgramAction = frontend::ParseSyntaxOnly;
1119 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1120 switch (A->getOption().getID()) {
1122 llvm_unreachable("Invalid option in group!");
1124 Opts.ProgramAction = frontend::ASTDeclList; break;
1126 case OPT_ast_dump_lookups:
1127 Opts.ProgramAction = frontend::ASTDump; break;
1129 Opts.ProgramAction = frontend::ASTPrint; break;
1131 Opts.ProgramAction = frontend::ASTView; break;
1132 case OPT_dump_raw_tokens:
1133 Opts.ProgramAction = frontend::DumpRawTokens; break;
1134 case OPT_dump_tokens:
1135 Opts.ProgramAction = frontend::DumpTokens; break;
1137 Opts.ProgramAction = frontend::EmitAssembly; break;
1138 case OPT_emit_llvm_bc:
1139 Opts.ProgramAction = frontend::EmitBC; break;
1141 Opts.ProgramAction = frontend::EmitHTML; break;
1143 Opts.ProgramAction = frontend::EmitLLVM; break;
1144 case OPT_emit_llvm_only:
1145 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1146 case OPT_emit_codegen_only:
1147 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1149 Opts.ProgramAction = frontend::EmitObj; break;
1151 Opts.FixItSuffix = A->getValue();
1154 Opts.ProgramAction = frontend::FixIt; break;
1155 case OPT_emit_module:
1156 Opts.ProgramAction = frontend::GenerateModule; break;
1157 case OPT_emit_module_interface:
1158 Opts.ProgramAction = frontend::GenerateModuleInterface; break;
1160 Opts.ProgramAction = frontend::GeneratePCH; break;
1162 Opts.ProgramAction = frontend::GeneratePTH; break;
1164 Opts.ProgramAction = frontend::InitOnly; break;
1165 case OPT_fsyntax_only:
1166 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1167 case OPT_module_file_info:
1168 Opts.ProgramAction = frontend::ModuleFileInfo; break;
1169 case OPT_verify_pch:
1170 Opts.ProgramAction = frontend::VerifyPCH; break;
1171 case OPT_print_decl_contexts:
1172 Opts.ProgramAction = frontend::PrintDeclContext; break;
1173 case OPT_print_preamble:
1174 Opts.ProgramAction = frontend::PrintPreamble; break;
1176 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1177 case OPT_rewrite_macros:
1178 Opts.ProgramAction = frontend::RewriteMacros; break;
1179 case OPT_rewrite_objc:
1180 Opts.ProgramAction = frontend::RewriteObjC; break;
1181 case OPT_rewrite_test:
1182 Opts.ProgramAction = frontend::RewriteTest; break;
1184 Opts.ProgramAction = frontend::RunAnalysis; break;
1186 Opts.ProgramAction = frontend::MigrateSource; break;
1188 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1192 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1193 Opts.Plugins.emplace_back(A->getValue(0));
1194 Opts.ProgramAction = frontend::PluginAction;
1195 Opts.ActionName = A->getValue();
1197 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1198 for (const Arg *AA : Args.filtered(OPT_plugin_arg))
1199 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1));
1201 for (const std::string &Arg :
1202 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) {
1203 std::string BlockName;
1204 unsigned MajorVersion;
1205 unsigned MinorVersion;
1207 std::string UserInfo;
1208 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion,
1209 MinorVersion, Hashed, UserInfo)) {
1210 Diags.Report(diag::err_test_module_file_extension_format) << Arg;
1215 // Add the testing module file extension.
1216 Opts.ModuleFileExtensions.push_back(
1217 std::make_shared<TestModuleFileExtension>(
1218 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo));
1221 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1222 Opts.CodeCompletionAt =
1223 ParsedSourceLocation::FromString(A->getValue());
1224 if (Opts.CodeCompletionAt.FileName.empty())
1225 Diags.Report(diag::err_drv_invalid_value)
1226 << A->getAsString(Args) << A->getValue();
1228 Opts.DisableFree = Args.hasArg(OPT_disable_free);
1230 Opts.OutputFile = Args.getLastArgValue(OPT_o);
1231 Opts.Plugins = Args.getAllArgValues(OPT_load);
1232 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1233 Opts.ShowHelp = Args.hasArg(OPT_help);
1234 Opts.ShowStats = Args.hasArg(OPT_print_stats);
1235 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1236 Opts.ShowVersion = Args.hasArg(OPT_version);
1237 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1238 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1239 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1240 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
1241 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
1242 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
1243 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
1244 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
1245 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
1246 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
1247 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
1248 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
1249 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
1250 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ);
1251 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files);
1252 Opts.IncludeTimestamps = !Args.hasArg(OPT_fno_pch_timestamp);
1254 Opts.CodeCompleteOpts.IncludeMacros
1255 = Args.hasArg(OPT_code_completion_macros);
1256 Opts.CodeCompleteOpts.IncludeCodePatterns
1257 = Args.hasArg(OPT_code_completion_patterns);
1258 Opts.CodeCompleteOpts.IncludeGlobals
1259 = !Args.hasArg(OPT_no_code_completion_globals);
1260 Opts.CodeCompleteOpts.IncludeBriefComments
1261 = Args.hasArg(OPT_code_completion_brief_comments);
1263 Opts.OverrideRecordLayoutsFile
1264 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
1266 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple));
1267 Opts.FindPchSource = Args.getLastArgValue(OPT_find_pch_source_EQ);
1268 Opts.StatsFile = Args.getLastArgValue(OPT_stats_file);
1270 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1272 OPT_arcmt_migrate)) {
1273 switch (A->getOption().getID()) {
1275 llvm_unreachable("missed a case");
1276 case OPT_arcmt_check:
1277 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1279 case OPT_arcmt_modify:
1280 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1282 case OPT_arcmt_migrate:
1283 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1287 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
1288 Opts.ARCMTMigrateReportOut
1289 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1290 Opts.ARCMTMigrateEmitARCErrors
1291 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1293 if (Args.hasArg(OPT_objcmt_migrate_literals))
1294 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
1295 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
1296 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
1297 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
1298 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
1299 if (Args.hasArg(OPT_objcmt_migrate_property))
1300 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
1301 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
1302 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
1303 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
1304 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
1305 if (Args.hasArg(OPT_objcmt_migrate_annotation))
1306 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
1307 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
1308 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
1309 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
1310 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
1311 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
1312 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
1313 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
1314 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
1315 if (Args.hasArg(OPT_objcmt_atomic_property))
1316 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
1317 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
1318 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
1319 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
1320 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
1321 if (Args.hasArg(OPT_objcmt_migrate_all))
1322 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
1324 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
1326 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
1327 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
1328 Diags.Report(diag::err_drv_argument_not_allowed_with)
1329 << "ARC migration" << "ObjC migration";
1332 InputKind DashX = IK_None;
1333 if (const Arg *A = Args.getLastArg(OPT_x)) {
1334 DashX = llvm::StringSwitch<InputKind>(A->getValue())
1336 .Case("cl", IK_OpenCL)
1337 .Case("cuda", IK_CUDA)
1338 .Case("c++", IK_CXX)
1339 .Case("c++-module", IK_CXX)
1340 .Case("objective-c", IK_ObjC)
1341 .Case("objective-c++", IK_ObjCXX)
1342 .Case("cpp-output", IK_PreprocessedC)
1343 .Case("assembler-with-cpp", IK_Asm)
1344 .Case("c++-cpp-output", IK_PreprocessedCXX)
1345 .Case("c++-module-cpp-output", IK_PreprocessedCXX)
1346 .Case("cuda-cpp-output", IK_PreprocessedCuda)
1347 .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1348 .Case("objc-cpp-output", IK_PreprocessedObjC)
1349 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1350 .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
1351 .Case("c-header", IK_C)
1352 .Case("cl-header", IK_OpenCL)
1353 .Case("objective-c-header", IK_ObjC)
1354 .Case("c++-header", IK_CXX)
1355 .Case("objective-c++-header", IK_ObjCXX)
1356 .Cases("ast", "pcm", IK_AST)
1357 .Case("ir", IK_LLVM_IR)
1358 .Case("renderscript", IK_RenderScript)
1360 if (DashX == IK_None)
1361 Diags.Report(diag::err_drv_invalid_value)
1362 << A->getAsString(Args) << A->getValue();
1363 IsHeaderFile = llvm::StringSwitch<bool>(A->getValue())
1364 .Case("c-header", true)
1365 .Case("cl-header", true)
1366 .Case("objective-c-header", true)
1367 .Case("c++-header", true)
1368 .Case("objective-c++-header", true)
1372 // '-' is the default input if none is given.
1373 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1374 Opts.Inputs.clear();
1376 Inputs.push_back("-");
1377 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1378 InputKind IK = DashX;
1379 if (IK == IK_None) {
1380 IK = FrontendOptions::getInputKindForExtension(
1381 StringRef(Inputs[i]).rsplit('.').second);
1382 // FIXME: Remove this hack.
1386 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK);
1392 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1394 std::string ClangExecutable =
1395 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1396 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
1398 // Compute the path to the resource directory.
1399 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
1400 SmallString<128> P(Dir);
1401 if (ClangResourceDir != "")
1402 llvm::sys::path::append(P, ClangResourceDir);
1404 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX,
1405 "clang", CLANG_VERSION_STRING);
1410 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1411 using namespace options;
1412 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1413 Opts.Verbose = Args.hasArg(OPT_v);
1414 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1415 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1416 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1417 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1418 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1419 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1420 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path);
1421 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
1422 for (const Arg *A : Args.filtered(OPT_fprebuilt_module_path))
1423 Opts.AddPrebuiltModulePath(A->getValue());
1424 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1425 Opts.ModulesValidateDiagnosticOptions =
1426 !Args.hasArg(OPT_fmodules_disable_diagnostic_validation);
1427 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps);
1428 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
1429 Opts.ModuleCachePruneInterval =
1430 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
1431 Opts.ModuleCachePruneAfter =
1432 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
1433 Opts.ModulesValidateOncePerBuildSession =
1434 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
1435 Opts.BuildSessionTimestamp =
1436 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
1437 Opts.ModulesValidateSystemHeaders =
1438 Args.hasArg(OPT_fmodules_validate_system_headers);
1439 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ))
1440 Opts.ModuleFormat = A->getValue();
1442 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) {
1443 StringRef MacroDef = A->getValue();
1444 Opts.ModulesIgnoreMacros.insert(
1445 llvm::CachedHashString(MacroDef.split('=').first));
1448 // Add -I..., -F..., and -index-header-map options in order.
1449 bool IsIndexHeaderMap = false;
1450 bool IsSysrootSpecified =
1451 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot);
1452 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) {
1453 if (A->getOption().matches(OPT_index_header_map)) {
1454 // -index-header-map applies to the next -I or -F.
1455 IsIndexHeaderMap = true;
1459 frontend::IncludeDirGroup Group =
1460 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled;
1462 bool IsFramework = A->getOption().matches(OPT_F);
1463 std::string Path = A->getValue();
1465 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') {
1466 SmallString<32> Buffer;
1467 llvm::sys::path::append(Buffer, Opts.Sysroot,
1468 llvm::StringRef(A->getValue()).substr(1));
1469 Path = Buffer.str();
1472 Opts.AddPath(Path, Group, IsFramework,
1473 /*IgnoreSysroot*/ true);
1474 IsIndexHeaderMap = false;
1477 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1478 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1480 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) {
1481 if (A->getOption().matches(OPT_iprefix))
1482 Prefix = A->getValue();
1483 else if (A->getOption().matches(OPT_iwithprefix))
1484 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true);
1486 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true);
1489 for (const Arg *A : Args.filtered(OPT_idirafter))
1490 Opts.AddPath(A->getValue(), frontend::After, false, true);
1491 for (const Arg *A : Args.filtered(OPT_iquote))
1492 Opts.AddPath(A->getValue(), frontend::Quoted, false, true);
1493 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot))
1494 Opts.AddPath(A->getValue(), frontend::System, false,
1495 !A->getOption().matches(OPT_iwithsysroot));
1496 for (const Arg *A : Args.filtered(OPT_iframework))
1497 Opts.AddPath(A->getValue(), frontend::System, true, true);
1499 // Add the paths for the various language specific isystem flags.
1500 for (const Arg *A : Args.filtered(OPT_c_isystem))
1501 Opts.AddPath(A->getValue(), frontend::CSystem, false, true);
1502 for (const Arg *A : Args.filtered(OPT_cxx_isystem))
1503 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true);
1504 for (const Arg *A : Args.filtered(OPT_objc_isystem))
1505 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true);
1506 for (const Arg *A : Args.filtered(OPT_objcxx_isystem))
1507 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true);
1509 // Add the internal paths from a driver that detects standard include paths.
1511 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) {
1512 frontend::IncludeDirGroup Group = frontend::System;
1513 if (A->getOption().matches(OPT_internal_externc_isystem))
1514 Group = frontend::ExternCSystem;
1515 Opts.AddPath(A->getValue(), Group, false, true);
1518 // Add the path prefixes which are implicitly treated as being system headers.
1520 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix))
1521 Opts.AddSystemHeaderPrefix(
1522 A->getValue(), A->getOption().matches(OPT_system_header_prefix));
1524 for (const Arg *A : Args.filtered(OPT_ivfsoverlay))
1525 Opts.AddVFSOverlayFile(A->getValue());
1528 static bool isOpenCL(LangStandard::Kind LangStd) {
1529 return LangStd == LangStandard::lang_opencl ||
1530 LangStd == LangStandard::lang_opencl11 ||
1531 LangStd == LangStandard::lang_opencl12 ||
1532 LangStd == LangStandard::lang_opencl20;
1535 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1536 const llvm::Triple &T,
1537 PreprocessorOptions &PPOpts,
1538 LangStandard::Kind LangStd) {
1539 // Set some properties which depend solely on the input kind; it would be nice
1540 // to move these to the language standard, and have the driver resolve the
1541 // input kind + language standard.
1543 Opts.AsmPreprocessor = 1;
1544 } else if (IK == IK_ObjC ||
1546 IK == IK_PreprocessedObjC ||
1547 IK == IK_PreprocessedObjCXX) {
1548 Opts.ObjC1 = Opts.ObjC2 = 1;
1551 if (LangStd == LangStandard::lang_unspecified) {
1552 // Based on the base language, pick one.
1557 llvm_unreachable("Invalid input kind!");
1559 LangStd = LangStandard::lang_opencl;
1562 case IK_PreprocessedCuda:
1563 LangStd = LangStandard::lang_cuda;
1567 case IK_PreprocessedC:
1568 // The PS4 uses C99 as the default C standard.
1570 LangStd = LangStandard::lang_gnu99;
1572 LangStd = LangStandard::lang_gnu11;
1575 case IK_PreprocessedObjC:
1576 LangStd = LangStandard::lang_gnu11;
1579 case IK_PreprocessedCXX:
1581 case IK_PreprocessedObjCXX:
1582 LangStd = LangStandard::lang_gnucxx98;
1584 case IK_RenderScript:
1585 LangStd = LangStandard::lang_c99;
1590 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1591 Opts.LineComment = Std.hasLineComments();
1592 Opts.C99 = Std.isC99();
1593 Opts.C11 = Std.isC11();
1594 Opts.CPlusPlus = Std.isCPlusPlus();
1595 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1596 Opts.CPlusPlus14 = Std.isCPlusPlus14();
1597 Opts.CPlusPlus1z = Std.isCPlusPlus1z();
1598 Opts.Digraphs = Std.hasDigraphs();
1599 Opts.GNUMode = Std.isGNUMode();
1600 Opts.GNUInline = Std.isC89();
1601 Opts.HexFloats = Std.hasHexFloats();
1602 Opts.ImplicitInt = Std.hasImplicitInt();
1604 // Set OpenCL Version.
1605 Opts.OpenCL = isOpenCL(LangStd) || IK == IK_OpenCL;
1606 if (LangStd == LangStandard::lang_opencl)
1607 Opts.OpenCLVersion = 100;
1608 else if (LangStd == LangStandard::lang_opencl11)
1609 Opts.OpenCLVersion = 110;
1610 else if (LangStd == LangStandard::lang_opencl12)
1611 Opts.OpenCLVersion = 120;
1612 else if (LangStd == LangStandard::lang_opencl20)
1613 Opts.OpenCLVersion = 200;
1615 // OpenCL has some additional defaults.
1619 Opts.CXXOperatorNames = 1;
1620 Opts.LaxVectorConversions = 0;
1621 Opts.DefaultFPContract = 1;
1622 Opts.NativeHalfType = 1;
1623 Opts.NativeHalfArgsAndReturns = 1;
1624 // Include default header file for OpenCL.
1625 if (Opts.IncludeDefaultHeader) {
1626 PPOpts.Includes.push_back("opencl-c.h");
1630 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda ||
1631 LangStd == LangStandard::lang_cuda;
1633 Opts.RenderScript = IK == IK_RenderScript;
1634 if (Opts.RenderScript) {
1635 Opts.NativeHalfType = 1;
1636 Opts.NativeHalfArgsAndReturns = 1;
1639 // OpenCL and C++ both have bool, true, false keywords.
1640 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1642 // OpenCL has half keyword
1643 Opts.Half = Opts.OpenCL;
1645 // C++ has wchar_t keyword.
1646 Opts.WChar = Opts.CPlusPlus;
1648 Opts.GNUKeywords = Opts.GNUMode;
1649 Opts.CXXOperatorNames = Opts.CPlusPlus;
1651 Opts.AlignedAllocation = Opts.CPlusPlus1z;
1653 Opts.DollarIdents = !Opts.AsmPreprocessor;
1656 /// Attempt to parse a visibility value out of the given argument.
1657 static Visibility parseVisibility(Arg *arg, ArgList &args,
1658 DiagnosticsEngine &diags) {
1659 StringRef value = arg->getValue();
1660 if (value == "default") {
1661 return DefaultVisibility;
1662 } else if (value == "hidden" || value == "internal") {
1663 return HiddenVisibility;
1664 } else if (value == "protected") {
1665 // FIXME: diagnose if target does not support protected visibility
1666 return ProtectedVisibility;
1669 diags.Report(diag::err_drv_invalid_value)
1670 << arg->getAsString(args) << value;
1671 return DefaultVisibility;
1674 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1675 const TargetOptions &TargetOpts,
1676 PreprocessorOptions &PPOpts,
1677 DiagnosticsEngine &Diags) {
1678 // FIXME: Cleanup per-file based stuff.
1679 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1680 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1681 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1682 #define LANGSTANDARD(id, name, desc, features) \
1683 .Case(name, LangStandard::lang_##id)
1684 #define LANGSTANDARD_ALIAS(id, alias) \
1685 .Case(alias, LangStandard::lang_##id)
1686 #include "clang/Frontend/LangStandards.def"
1687 .Default(LangStandard::lang_unspecified);
1688 if (LangStd == LangStandard::lang_unspecified)
1689 Diags.Report(diag::err_drv_invalid_value)
1690 << A->getAsString(Args) << A->getValue();
1692 // Valid standard, check to make sure language and standard are
1694 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1698 case IK_PreprocessedC:
1699 case IK_PreprocessedObjC:
1700 if (!(Std.isC89() || Std.isC99()))
1701 Diags.Report(diag::err_drv_argument_not_allowed_with)
1702 << A->getAsString(Args) << "C/ObjC";
1706 case IK_PreprocessedCXX:
1707 case IK_PreprocessedObjCXX:
1708 if (!Std.isCPlusPlus())
1709 Diags.Report(diag::err_drv_argument_not_allowed_with)
1710 << A->getAsString(Args) << "C++/ObjC++";
1713 if (!isOpenCL(LangStd))
1714 Diags.Report(diag::err_drv_argument_not_allowed_with)
1715 << A->getAsString(Args) << "OpenCL";
1718 case IK_PreprocessedCuda:
1719 if (!Std.isCPlusPlus())
1720 Diags.Report(diag::err_drv_argument_not_allowed_with)
1721 << A->getAsString(Args) << "CUDA";
1729 // -cl-std only applies for OpenCL language standards.
1730 // Override the -std option in this case.
1731 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1732 LangStandard::Kind OpenCLLangStd
1733 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1734 .Cases("cl", "CL", LangStandard::lang_opencl)
1735 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11)
1736 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12)
1737 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20)
1738 .Default(LangStandard::lang_unspecified);
1740 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1741 Diags.Report(diag::err_drv_invalid_value)
1742 << A->getAsString(Args) << A->getValue();
1745 LangStd = OpenCLLangStd;
1748 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header);
1750 llvm::Triple T(TargetOpts.Triple);
1751 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd);
1753 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0.
1754 // This option should be deprecated for CL > 1.0 because
1755 // this option was added for compatibility with OpenCL 1.0.
1756 if (Args.getLastArg(OPT_cl_strict_aliasing)
1757 && Opts.OpenCLVersion > 100) {
1758 std::string VerSpec = llvm::to_string(Opts.OpenCLVersion / 100) +
1760 llvm::to_string((Opts.OpenCLVersion % 100) / 10);
1761 Diags.Report(diag::warn_option_invalid_ocl_version)
1762 << VerSpec << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args);
1765 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1766 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1767 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1768 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1769 // name, as it doesn't seem a useful distinction.
1770 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1773 if (Args.hasArg(OPT_fno_operator_names))
1774 Opts.CXXOperatorNames = 0;
1776 if (Args.hasArg(OPT_fcuda_is_device))
1777 Opts.CUDAIsDevice = 1;
1779 if (Args.hasArg(OPT_fcuda_allow_variadic_functions))
1780 Opts.CUDAAllowVariadicFunctions = 1;
1782 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr))
1783 Opts.CUDAHostDeviceConstexpr = 0;
1785 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero))
1786 Opts.CUDADeviceFlushDenormalsToZero = 1;
1788 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals))
1789 Opts.CUDADeviceApproxTranscendentals = 1;
1792 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1793 StringRef value = arg->getValue();
1794 if (Opts.ObjCRuntime.tryParse(value))
1795 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1798 if (Args.hasArg(OPT_fobjc_gc_only))
1799 Opts.setGC(LangOptions::GCOnly);
1800 else if (Args.hasArg(OPT_fobjc_gc))
1801 Opts.setGC(LangOptions::HybridGC);
1802 else if (Args.hasArg(OPT_fobjc_arc)) {
1803 Opts.ObjCAutoRefCount = 1;
1804 if (!Opts.ObjCRuntime.allowsARC())
1805 Diags.Report(diag::err_arc_unsupported_on_runtime);
1808 // ObjCWeakRuntime tracks whether the runtime supports __weak, not
1809 // whether the feature is actually enabled. This is predominantly
1810 // determined by -fobjc-runtime, but we allow it to be overridden
1811 // from the command line for testing purposes.
1812 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1813 Opts.ObjCWeakRuntime = 1;
1815 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak();
1817 // ObjCWeak determines whether __weak is actually enabled.
1818 // Note that we allow -fno-objc-weak to disable this even in ARC mode.
1819 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) {
1820 if (!weakArg->getOption().matches(OPT_fobjc_weak)) {
1821 assert(!Opts.ObjCWeak);
1822 } else if (Opts.getGC() != LangOptions::NonGC) {
1823 Diags.Report(diag::err_objc_weak_with_gc);
1824 } else if (!Opts.ObjCWeakRuntime) {
1825 Diags.Report(diag::err_objc_weak_unsupported);
1829 } else if (Opts.ObjCAutoRefCount) {
1830 Opts.ObjCWeak = Opts.ObjCWeakRuntime;
1833 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1834 Opts.ObjCInferRelatedResultType = 0;
1836 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
1837 Opts.ObjCSubscriptingLegacyRuntime =
1838 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
1841 if (Args.hasArg(OPT_fgnu89_inline)) {
1843 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fgnu89-inline"
1849 if (Args.hasArg(OPT_fapple_kext)) {
1850 if (!Opts.CPlusPlus)
1851 Diags.Report(diag::warn_c_kext);
1856 if (Args.hasArg(OPT_print_ivar_layout))
1857 Opts.ObjCGCBitmapPrint = 1;
1858 if (Args.hasArg(OPT_fno_constant_cfstrings))
1859 Opts.NoConstantCFStrings = 1;
1861 if (Args.hasArg(OPT_faltivec))
1864 if (Args.hasArg(OPT_fzvector))
1867 if (Args.hasArg(OPT_pthread))
1868 Opts.POSIXThreads = 1;
1870 // The value-visibility mode defaults to "default".
1871 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
1872 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
1874 Opts.setValueVisibilityMode(DefaultVisibility);
1877 // The type-visibility mode defaults to the value-visibility mode.
1878 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
1879 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
1881 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
1884 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1885 Opts.InlineVisibilityHidden = 1;
1887 if (Args.hasArg(OPT_ftrapv)) {
1888 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1889 // Set the handler, if one is specified.
1890 Opts.OverflowHandler =
1891 Args.getLastArgValue(OPT_ftrapv_handler);
1893 else if (Args.hasArg(OPT_fwrapv))
1894 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1896 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
1897 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
1898 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
1899 Opts.MSCompatibilityVersion = 0;
1900 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) {
1902 if (VT.tryParse(A->getValue()))
1903 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
1905 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 +
1906 VT.getMinor().getValueOr(0) * 100000 +
1907 VT.getSubminor().getValueOr(0);
1910 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1911 // is specified, or -std is set to a conforming mode.
1912 // Trigraphs are disabled by default in c++1z onwards.
1913 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z;
1915 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
1917 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1918 OPT_fno_dollars_in_identifiers,
1920 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1921 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
1922 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1923 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1924 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1926 if (Args.hasArg(OPT_fno_lax_vector_conversions))
1927 Opts.LaxVectorConversions = 0;
1928 if (Args.hasArg(OPT_fno_threadsafe_statics))
1929 Opts.ThreadsafeStatics = 0;
1930 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1931 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1932 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1933 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1934 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind);
1935 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1937 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti);
1938 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
1939 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL
1940 && Opts.OpenCLVersion >= 200);
1941 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1942 Opts.CoroutinesTS = Args.hasArg(OPT_fcoroutines_ts);
1943 Opts.ModulesTS = Args.hasArg(OPT_fmodules_ts);
1944 Opts.Modules = Args.hasArg(OPT_fmodules) || Opts.ModulesTS;
1945 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
1946 Opts.ModulesDeclUse =
1947 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
1948 Opts.ModulesLocalVisibility =
1949 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS;
1950 Opts.ModulesSearchAll = Opts.Modules &&
1951 !Args.hasArg(OPT_fno_modules_search_all) &&
1952 Args.hasArg(OPT_fmodules_search_all);
1953 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
1954 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules);
1955 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
1956 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
1957 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
1958 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1959 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1960 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1961 if (!Opts.NoBuiltin)
1962 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
1963 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
1964 Opts.RelaxedTemplateTemplateArgs =
1965 Args.hasArg(OPT_frelaxed_template_template_args);
1966 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation);
1967 Opts.AlignedAllocation =
1968 Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation,
1969 Opts.AlignedAllocation);
1970 Opts.NewAlignOverride =
1971 getLastArgIntValue(Args, OPT_fnew_alignment_EQ, 0, Diags);
1972 if (Opts.NewAlignOverride && !llvm::isPowerOf2_32(Opts.NewAlignOverride)) {
1973 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ);
1974 Diags.Report(diag::err_fe_invalid_alignment) << A->getAsString(Args)
1976 Opts.NewAlignOverride = 0;
1978 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts);
1979 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1980 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1981 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1982 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
1983 Opts.InstantiationDepth =
1984 getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags);
1986 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
1987 Opts.ConstexprCallDepth =
1988 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
1989 Opts.ConstexprStepLimit =
1990 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
1991 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
1992 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1993 Opts.NumLargeByValueCopy =
1994 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
1995 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1996 Opts.ObjCConstantStringClass =
1997 Args.getLastArgValue(OPT_fconstant_string_class);
1998 Opts.ObjCDefaultSynthProperties =
1999 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
2000 Opts.EncodeExtendedBlockSig =
2001 Args.hasArg(OPT_fencode_extended_block_signature);
2002 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
2003 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
2004 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
2005 Opts.AlignDouble = Args.hasArg(OPT_malign_double);
2006 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2007 Opts.PIE = Args.hasArg(OPT_pic_is_pie);
2008 Opts.Static = Args.hasArg(OPT_static_define);
2009 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
2010 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
2011 || Args.hasArg(OPT_fdump_record_layouts);
2012 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
2013 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
2014 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
2015 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
2016 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
2017 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
2018 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
2019 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
2020 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
2021 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
2022 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
2023 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
2024 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name_EQ);
2025 Opts.AppExt = Args.hasArg(OPT_fapplication_extension);
2026 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature);
2027 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end());
2028 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type);
2029 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns);
2030 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns
2032 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns)
2033 | Opts.NativeHalfArgsAndReturns;
2034 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm);
2036 // __declspec is enabled by default for the PS4 by the driver, and also
2037 // enabled for Microsoft Extensions or Borland Extensions, here.
2039 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a
2040 // CUDA extension. However, it is required for supporting
2041 // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has
2042 // been rewritten in terms of something more generic, remove the Opts.CUDA
2044 Opts.DeclSpecKeyword =
2045 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec,
2046 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA));
2048 // For now, we only support local submodule visibility in C++ (because we
2049 // heavily depend on the ODR for merging redefinitions).
2050 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus)
2051 Diags.Report(diag::err_drv_argument_not_allowed_with)
2052 << "-fmodules-local-submodule-visibility" << "C";
2054 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
2055 switch (llvm::StringSwitch<unsigned>(A->getValue())
2056 .Case("target", LangOptions::ASMM_Target)
2057 .Case("no", LangOptions::ASMM_Off)
2058 .Case("yes", LangOptions::ASMM_On)
2061 Diags.Report(diag::err_drv_invalid_value)
2062 << "-faddress-space-map-mangling=" << A->getValue();
2064 case LangOptions::ASMM_Target:
2065 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
2067 case LangOptions::ASMM_On:
2068 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
2070 case LangOptions::ASMM_Off:
2071 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
2076 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
2077 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
2078 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
2081 LangOptions::PPTMK_FullGeneralitySingleInheritance)
2083 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
2085 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
2086 .Default(LangOptions::PPTMK_BestCase);
2087 if (InheritanceModel == LangOptions::PPTMK_BestCase)
2088 Diags.Report(diag::err_drv_invalid_value)
2089 << "-fms-memptr-rep=" << A->getValue();
2091 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
2094 // Check for MS default calling conventions being specified.
2095 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) {
2096 LangOptions::DefaultCallingConvention DefaultCC =
2097 llvm::StringSwitch<LangOptions::DefaultCallingConvention>(
2099 .Case("cdecl", LangOptions::DCC_CDecl)
2100 .Case("fastcall", LangOptions::DCC_FastCall)
2101 .Case("stdcall", LangOptions::DCC_StdCall)
2102 .Case("vectorcall", LangOptions::DCC_VectorCall)
2103 .Default(LangOptions::DCC_None);
2104 if (DefaultCC == LangOptions::DCC_None)
2105 Diags.Report(diag::err_drv_invalid_value)
2106 << "-fdefault-calling-conv=" << A->getValue();
2108 llvm::Triple T(TargetOpts.Triple);
2109 llvm::Triple::ArchType Arch = T.getArch();
2110 bool emitError = (DefaultCC == LangOptions::DCC_FastCall ||
2111 DefaultCC == LangOptions::DCC_StdCall) &&
2112 Arch != llvm::Triple::x86;
2113 emitError |= DefaultCC == LangOptions::DCC_VectorCall &&
2114 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64);
2116 Diags.Report(diag::err_drv_argument_not_allowed_with)
2117 << A->getSpelling() << T.getTriple();
2119 Opts.setDefaultCallingConv(DefaultCC);
2123 if (Arg *A = Args.getLastArg(OPT_mrtd)) {
2124 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None)
2125 Diags.Report(diag::err_drv_argument_not_allowed_with)
2126 << A->getSpelling() << "-fdefault-calling-conv";
2128 llvm::Triple T(TargetOpts.Triple);
2129 if (T.getArch() != llvm::Triple::x86)
2130 Diags.Report(diag::err_drv_argument_not_allowed_with)
2131 << A->getSpelling() << T.getTriple();
2133 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall);
2137 // Check if -fopenmp is specified.
2138 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0;
2140 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls);
2141 Opts.OpenMPIsDevice =
2142 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device);
2146 getLastArgIntValue(Args, OPT_fopenmp_version_EQ, Opts.OpenMP, Diags);
2148 Opts.OpenMP = Version;
2149 // Provide diagnostic when a given target is not expected to be an OpenMP
2151 if (!Opts.OpenMPIsDevice) {
2152 switch (T.getArch()) {
2155 // Add unsupported host targets here:
2156 case llvm::Triple::nvptx:
2157 case llvm::Triple::nvptx64:
2158 Diags.Report(clang::diag::err_drv_omp_host_target_not_supported)
2159 << TargetOpts.Triple;
2165 // Get the OpenMP target triples if any.
2166 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) {
2168 for (unsigned i = 0; i < A->getNumValues(); ++i) {
2169 llvm::Triple TT(A->getValue(i));
2171 if (TT.getArch() == llvm::Triple::UnknownArch)
2172 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i);
2174 Opts.OMPTargetTriples.push_back(TT);
2178 // Get OpenMP host file path if any and report if a non existent file is
2180 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) {
2181 Opts.OMPHostIRFile = A->getValue();
2182 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile))
2183 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found)
2184 << Opts.OMPHostIRFile;
2187 // Record whether the __DEPRECATED define was requested.
2188 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
2189 OPT_fno_deprecated_macro,
2192 // FIXME: Eliminate this dependency.
2193 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
2194 OptSize = getOptimizationLevelSize(Args);
2195 Opts.Optimize = Opt != 0;
2196 Opts.OptimizeSize = OptSize != 0;
2198 // This is the __NO_INLINE__ define, which just depends on things like the
2199 // optimization level and -fno-inline, not actually whether the backend has
2200 // inlining enabled.
2201 Opts.NoInlineDefine = !Opts.Optimize;
2202 if (Arg *InlineArg = Args.getLastArg(
2203 options::OPT_finline_functions, options::OPT_finline_hint_functions,
2204 options::OPT_fno_inline_functions, options::OPT_fno_inline))
2205 if (InlineArg->getOption().matches(options::OPT_fno_inline))
2206 Opts.NoInlineDefine = true;
2208 Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
2209 Args.hasArg(OPT_cl_fast_relaxed_math);
2210 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
2211 Args.hasArg(OPT_cl_finite_math_only) ||
2212 Args.hasArg(OPT_cl_fast_relaxed_math);
2213 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
2214 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
2215 Args.hasArg(OPT_cl_fast_relaxed_math);
2217 Opts.RetainCommentsFromSystemHeaders =
2218 Args.hasArg(OPT_fretain_comments_from_system_headers);
2220 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
2223 Diags.Report(diag::err_drv_invalid_value)
2224 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
2226 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
2227 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
2228 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
2229 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
2232 // Parse -fsanitize= arguments.
2233 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2234 Diags, Opts.Sanitize);
2235 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
2236 Opts.SanitizeAddressFieldPadding =
2237 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
2238 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist);
2241 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
2242 FileManager &FileMgr,
2243 DiagnosticsEngine &Diags) {
2244 using namespace options;
2245 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
2246 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
2247 if (const Arg *A = Args.getLastArg(OPT_token_cache))
2248 Opts.TokenCache = A->getValue();
2250 Opts.TokenCache = Opts.ImplicitPTHInclude;
2251 Opts.UsePredefines = !Args.hasArg(OPT_undef);
2252 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
2253 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
2255 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
2256 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl))
2257 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
2259 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
2260 StringRef Value(A->getValue());
2261 size_t Comma = Value.find(',');
2263 unsigned EndOfLine = 0;
2265 if (Comma == StringRef::npos ||
2266 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
2267 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
2268 Diags.Report(diag::err_drv_preamble_format);
2270 Opts.PrecompiledPreambleBytes.first = Bytes;
2271 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
2275 // Add macros from the command line.
2276 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) {
2277 if (A->getOption().matches(OPT_D))
2278 Opts.addMacroDef(A->getValue());
2280 Opts.addMacroUndef(A->getValue());
2283 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
2285 // Add the ordered list of -includes.
2286 for (const Arg *A : Args.filtered(OPT_include))
2287 Opts.Includes.emplace_back(A->getValue());
2289 for (const Arg *A : Args.filtered(OPT_chain_include))
2290 Opts.ChainedIncludes.emplace_back(A->getValue());
2292 for (const Arg *A : Args.filtered(OPT_remap_file)) {
2293 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';');
2295 if (Split.second.empty()) {
2296 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
2300 Opts.addRemappedFile(Split.first, Split.second);
2303 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
2304 StringRef Name = A->getValue();
2305 unsigned Library = llvm::StringSwitch<unsigned>(Name)
2306 .Case("libc++", ARCXX_libcxx)
2307 .Case("libstdc++", ARCXX_libstdcxx)
2308 .Case("none", ARCXX_nolib)
2311 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
2313 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
2317 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
2319 frontend::ActionKind Action) {
2320 using namespace options;
2323 case frontend::ASTDeclList:
2324 case frontend::ASTDump:
2325 case frontend::ASTPrint:
2326 case frontend::ASTView:
2327 case frontend::EmitAssembly:
2328 case frontend::EmitBC:
2329 case frontend::EmitHTML:
2330 case frontend::EmitLLVM:
2331 case frontend::EmitLLVMOnly:
2332 case frontend::EmitCodeGenOnly:
2333 case frontend::EmitObj:
2334 case frontend::FixIt:
2335 case frontend::GenerateModule:
2336 case frontend::GenerateModuleInterface:
2337 case frontend::GeneratePCH:
2338 case frontend::GeneratePTH:
2339 case frontend::ParseSyntaxOnly:
2340 case frontend::ModuleFileInfo:
2341 case frontend::VerifyPCH:
2342 case frontend::PluginAction:
2343 case frontend::PrintDeclContext:
2344 case frontend::RewriteObjC:
2345 case frontend::RewriteTest:
2346 case frontend::RunAnalysis:
2347 case frontend::MigrateSource:
2351 case frontend::DumpRawTokens:
2352 case frontend::DumpTokens:
2353 case frontend::InitOnly:
2354 case frontend::PrintPreamble:
2355 case frontend::PrintPreprocessedInput:
2356 case frontend::RewriteMacros:
2357 case frontend::RunPreprocessorOnly:
2358 Opts.ShowCPP = !Args.hasArg(OPT_dM);
2362 Opts.ShowComments = Args.hasArg(OPT_C);
2363 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
2364 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
2365 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
2366 Opts.ShowIncludeDirectives = Args.hasArg(OPT_dI);
2367 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
2368 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives);
2371 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args,
2372 DiagnosticsEngine &Diags) {
2373 using namespace options;
2374 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
2375 if (Arg *A = Args.getLastArg(OPT_meabi)) {
2376 StringRef Value = A->getValue();
2377 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value)
2378 .Case("default", llvm::EABI::Default)
2379 .Case("4", llvm::EABI::EABI4)
2380 .Case("5", llvm::EABI::EABI5)
2381 .Case("gnu", llvm::EABI::GNU)
2382 .Default(llvm::EABI::Unknown);
2383 if (EABIVersion == llvm::EABI::Unknown)
2384 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
2387 Opts.EABIVersion = Value;
2389 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
2390 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
2391 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
2392 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
2393 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
2394 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ);
2395 // Use the default target triple if unspecified.
2396 if (Opts.Triple.empty())
2397 Opts.Triple = llvm::sys::getDefaultTargetTriple();
2398 Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ);
2401 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
2402 const char *const *ArgBegin,
2403 const char *const *ArgEnd,
2404 DiagnosticsEngine &Diags) {
2405 bool Success = true;
2407 // Parse the arguments.
2408 std::unique_ptr<OptTable> Opts(createDriverOptTable());
2409 const unsigned IncludedFlagsBitmask = options::CC1Option;
2410 unsigned MissingArgIndex, MissingArgCount;
2412 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex,
2413 MissingArgCount, IncludedFlagsBitmask);
2414 LangOptions &LangOpts = *Res.getLangOpts();
2416 // Check for missing argument error.
2417 if (MissingArgCount) {
2418 Diags.Report(diag::err_drv_missing_argument)
2419 << Args.getArgString(MissingArgIndex) << MissingArgCount;
2423 // Issue errors on unknown arguments.
2424 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) {
2425 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args);
2429 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags);
2430 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args);
2431 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args);
2433 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags,
2434 false /*DefaultDiagColor*/, false /*DefaultShowOpt*/);
2435 ParseCommentArgs(LangOpts.CommentOpts, Args);
2436 ParseFileSystemArgs(Res.getFileSystemOpts(), Args);
2437 // FIXME: We shouldn't have to pass the DashX option around here
2438 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags,
2439 LangOpts.IsHeaderFile);
2440 ParseTargetArgs(Res.getTargetOpts(), Args, Diags);
2441 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags,
2442 Res.getTargetOpts());
2443 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args);
2444 if (DashX == IK_AST || DashX == IK_LLVM_IR) {
2445 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the
2446 // PassManager in BackendUtil.cpp. They need to be initializd no matter
2447 // what the input type is.
2448 if (Args.hasArg(OPT_fobjc_arc))
2449 LangOpts.ObjCAutoRefCount = 1;
2450 // PIClevel and PIELevel are needed during code generation and this should be
2451 // set regardless of the input type.
2452 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2453 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie);
2454 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2455 Diags, LangOpts.Sanitize);
2457 // Other LangOpts are only initialzed when the input is not AST or LLVM IR.
2458 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(),
2459 Res.getPreprocessorOpts(), Diags);
2460 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2461 LangOpts.ObjCExceptions = 1;
2464 if (LangOpts.CUDA) {
2465 // During CUDA device-side compilation, the aux triple is the
2466 // triple used for host compilation.
2467 if (LangOpts.CUDAIsDevice)
2468 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
2470 // Set default FP_CONTRACT to FAST.
2471 if (!Args.hasArg(OPT_ffp_contract))
2472 Res.getCodeGenOpts().setFPContractMode(CodeGenOptions::FPC_Fast);
2475 // FIXME: Override value name discarding when asan or msan is used because the
2476 // backend passes depend on the name of the alloca in order to print out
2478 Res.getCodeGenOpts().DiscardValueNames &=
2479 !LangOpts.Sanitize.has(SanitizerKind::Address) &&
2480 !LangOpts.Sanitize.has(SanitizerKind::Memory);
2482 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
2483 // PCH file and find the original header name. Remove the need to do that in
2484 // ParsePreprocessorArgs and remove the FileManager
2485 // parameters from the function and the "FileManager.h" #include.
2486 FileManager FileMgr(Res.getFileSystemOpts());
2487 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags);
2488 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args,
2489 Res.getFrontendOpts().ProgramAction);
2491 // Turn on -Wspir-compat for SPIR target.
2492 llvm::Triple T(Res.getTargetOpts().Triple);
2493 auto Arch = T.getArch();
2494 if (Arch == llvm::Triple::spir || Arch == llvm::Triple::spir64) {
2495 Res.getDiagnosticOpts().Warnings.push_back("spir-compat");
2500 std::string CompilerInvocation::getModuleHash() const {
2501 // Note: For QoI reasons, the things we use as a hash here should all be
2502 // dumped via the -module-info flag.
2503 using llvm::hash_code;
2504 using llvm::hash_value;
2505 using llvm::hash_combine;
2507 // Start the signature with the compiler version.
2508 // FIXME: We'd rather use something more cryptographically sound than
2509 // CityHash, but this will do for now.
2510 hash_code code = hash_value(getClangFullRepositoryVersion());
2512 // Extend the signature with the language options
2513 #define LANGOPT(Name, Bits, Default, Description) \
2514 code = hash_combine(code, LangOpts->Name);
2515 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2516 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
2517 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
2518 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
2519 #include "clang/Basic/LangOptions.def"
2521 for (StringRef Feature : LangOpts->ModuleFeatures)
2522 code = hash_combine(code, Feature);
2524 // Extend the signature with the target options.
2525 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
2527 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
2528 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
2530 // Extend the signature with preprocessor options.
2531 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
2532 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
2533 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
2535 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator
2536 I = getPreprocessorOpts().Macros.begin(),
2537 IEnd = getPreprocessorOpts().Macros.end();
2539 // If we're supposed to ignore this macro for the purposes of modules,
2540 // don't put it into the hash.
2541 if (!hsOpts.ModulesIgnoreMacros.empty()) {
2542 // Check whether we're ignoring this macro.
2543 StringRef MacroDef = I->first;
2544 if (hsOpts.ModulesIgnoreMacros.count(
2545 llvm::CachedHashString(MacroDef.split('=').first)))
2549 code = hash_combine(code, I->first, I->second);
2552 // Extend the signature with the sysroot and other header search options.
2553 code = hash_combine(code, hsOpts.Sysroot,
2554 hsOpts.ModuleFormat,
2555 hsOpts.UseDebugInfo,
2556 hsOpts.UseBuiltinIncludes,
2557 hsOpts.UseStandardSystemIncludes,
2558 hsOpts.UseStandardCXXIncludes,
2560 hsOpts.ModulesValidateDiagnosticOptions);
2561 code = hash_combine(code, hsOpts.ResourceDir);
2563 // Extend the signature with the user build path.
2564 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
2566 // Extend the signature with the module file extensions.
2567 const FrontendOptions &frontendOpts = getFrontendOpts();
2568 for (const auto &ext : frontendOpts.ModuleFileExtensions) {
2569 code = ext->hashExtension(code);
2572 // Darwin-specific hack: if we have a sysroot, use the contents and
2573 // modification time of
2574 // $sysroot/System/Library/CoreServices/SystemVersion.plist
2575 // as part of the module hash.
2576 if (!hsOpts.Sysroot.empty()) {
2577 SmallString<128> systemVersionFile;
2578 systemVersionFile += hsOpts.Sysroot;
2579 llvm::sys::path::append(systemVersionFile, "System");
2580 llvm::sys::path::append(systemVersionFile, "Library");
2581 llvm::sys::path::append(systemVersionFile, "CoreServices");
2582 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist");
2584 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer =
2585 llvm::MemoryBuffer::getFile(systemVersionFile);
2587 code = hash_combine(code, buffer.get()->getBuffer());
2589 struct stat statBuf;
2590 if (stat(systemVersionFile.c_str(), &statBuf) == 0)
2591 code = hash_combine(code, statBuf.st_mtime);
2595 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
2600 template<typename IntTy>
2601 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
2603 DiagnosticsEngine *Diags) {
2604 IntTy Res = Default;
2605 if (Arg *A = Args.getLastArg(Id)) {
2606 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
2608 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
2616 // Declared in clang/Frontend/Utils.h.
2617 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
2618 DiagnosticsEngine *Diags) {
2619 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
2622 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
2624 DiagnosticsEngine *Diags) {
2625 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
2628 void BuryPointer(const void *Ptr) {
2629 // This function may be called only a small fixed amount of times per each
2630 // invocation, otherwise we do actually have a leak which we want to report.
2631 // If this function is called more than kGraveYardMaxSize times, the pointers
2632 // will not be properly buried and a leak detector will report a leak, which
2633 // is what we want in such case.
2634 static const size_t kGraveYardMaxSize = 16;
2635 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2636 static std::atomic<unsigned> GraveYardSize;
2637 unsigned Idx = GraveYardSize++;
2638 if (Idx >= kGraveYardMaxSize)
2640 GraveYard[Idx] = Ptr;
2643 IntrusiveRefCntPtr<vfs::FileSystem>
2644 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2645 DiagnosticsEngine &Diags) {
2646 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2647 return vfs::getRealFileSystem();
2649 IntrusiveRefCntPtr<vfs::OverlayFileSystem>
2650 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem()));
2651 // earlier vfs files are on the bottom
2652 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2653 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2654 llvm::MemoryBuffer::getFile(File);
2656 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2657 return IntrusiveRefCntPtr<vfs::FileSystem>();
2660 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML(
2661 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File);
2663 Diags.Report(diag::err_invalid_vfs_overlay) << File;
2664 return IntrusiveRefCntPtr<vfs::FileSystem>();
2666 Overlay->pushOverlay(FS);
2670 } // end namespace clang