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/CharInfo.h"
14 #include "clang/Basic/CodeGenOptions.h"
15 #include "clang/Basic/CommentOptions.h"
16 #include "clang/Basic/DebugInfoOptions.h"
17 #include "clang/Basic/Diagnostic.h"
18 #include "clang/Basic/DiagnosticOptions.h"
19 #include "clang/Basic/FileSystemOptions.h"
20 #include "clang/Basic/LLVM.h"
21 #include "clang/Basic/LangOptions.h"
22 #include "clang/Basic/ObjCRuntime.h"
23 #include "clang/Basic/Sanitizers.h"
24 #include "clang/Basic/SourceLocation.h"
25 #include "clang/Basic/TargetOptions.h"
26 #include "clang/Basic/Version.h"
27 #include "clang/Basic/Visibility.h"
28 #include "clang/Basic/XRayInstr.h"
29 #include "clang/Config/config.h"
30 #include "clang/Driver/DriverDiagnostic.h"
31 #include "clang/Driver/Options.h"
32 #include "clang/Frontend/CommandLineSourceLoc.h"
33 #include "clang/Frontend/DependencyOutputOptions.h"
34 #include "clang/Frontend/FrontendDiagnostic.h"
35 #include "clang/Frontend/FrontendOptions.h"
36 #include "clang/Frontend/FrontendPluginRegistry.h"
37 #include "clang/Frontend/LangStandard.h"
38 #include "clang/Frontend/MigratorOptions.h"
39 #include "clang/Frontend/PreprocessorOutputOptions.h"
40 #include "clang/Frontend/Utils.h"
41 #include "clang/Lex/HeaderSearchOptions.h"
42 #include "clang/Lex/PreprocessorOptions.h"
43 #include "clang/Sema/CodeCompleteOptions.h"
44 #include "clang/Serialization/ModuleFileExtension.h"
45 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h"
46 #include "llvm/ADT/APInt.h"
47 #include "llvm/ADT/ArrayRef.h"
48 #include "llvm/ADT/CachedHashString.h"
49 #include "llvm/ADT/Hashing.h"
50 #include "llvm/ADT/None.h"
51 #include "llvm/ADT/Optional.h"
52 #include "llvm/ADT/SmallString.h"
53 #include "llvm/ADT/SmallVector.h"
54 #include "llvm/ADT/StringRef.h"
55 #include "llvm/ADT/StringSwitch.h"
56 #include "llvm/ADT/Triple.h"
57 #include "llvm/ADT/Twine.h"
58 #include "llvm/IR/DebugInfoMetadata.h"
59 #include "llvm/Linker/Linker.h"
60 #include "llvm/MC/MCTargetOptions.h"
61 #include "llvm/Option/Arg.h"
62 #include "llvm/Option/ArgList.h"
63 #include "llvm/Option/OptSpecifier.h"
64 #include "llvm/Option/OptTable.h"
65 #include "llvm/Option/Option.h"
66 #include "llvm/ProfileData/InstrProfReader.h"
67 #include "llvm/Support/CodeGen.h"
68 #include "llvm/Support/Compiler.h"
69 #include "llvm/Support/Error.h"
70 #include "llvm/Support/ErrorHandling.h"
71 #include "llvm/Support/ErrorOr.h"
72 #include "llvm/Support/FileSystem.h"
73 #include "llvm/Support/Host.h"
74 #include "llvm/Support/MathExtras.h"
75 #include "llvm/Support/MemoryBuffer.h"
76 #include "llvm/Support/Path.h"
77 #include "llvm/Support/Process.h"
78 #include "llvm/Support/Regex.h"
79 #include "llvm/Support/VersionTuple.h"
80 #include "llvm/Support/VirtualFileSystem.h"
81 #include "llvm/Support/raw_ostream.h"
82 #include "llvm/Target/TargetOptions.h"
94 using namespace clang;
95 using namespace driver;
96 using namespace options;
97 using namespace llvm::opt;
99 //===----------------------------------------------------------------------===//
101 //===----------------------------------------------------------------------===//
103 CompilerInvocationBase::CompilerInvocationBase()
104 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
105 DiagnosticOpts(new DiagnosticOptions()),
106 HeaderSearchOpts(new HeaderSearchOptions()),
107 PreprocessorOpts(new PreprocessorOptions()) {}
109 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
110 : LangOpts(new LangOptions(*X.getLangOpts())),
111 TargetOpts(new TargetOptions(X.getTargetOpts())),
112 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
113 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
114 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
116 CompilerInvocationBase::~CompilerInvocationBase() = default;
118 //===----------------------------------------------------------------------===//
119 // Deserialization (from args)
120 //===----------------------------------------------------------------------===//
122 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
123 DiagnosticsEngine &Diags) {
124 unsigned DefaultOpt = llvm::CodeGenOpt::None;
125 if (IK.getLanguage() == InputKind::OpenCL && !Args.hasArg(OPT_cl_opt_disable))
126 DefaultOpt = llvm::CodeGenOpt::Default;
128 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
129 if (A->getOption().matches(options::OPT_O0))
130 return llvm::CodeGenOpt::None;
132 if (A->getOption().matches(options::OPT_Ofast))
133 return llvm::CodeGenOpt::Aggressive;
135 assert(A->getOption().matches(options::OPT_O));
137 StringRef S(A->getValue());
138 if (S == "s" || S == "z" || S.empty())
139 return llvm::CodeGenOpt::Default;
142 return llvm::CodeGenOpt::Less;
144 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
150 static unsigned getOptimizationLevelSize(ArgList &Args) {
151 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
152 if (A->getOption().matches(options::OPT_O)) {
153 switch (A->getValue()[0]) {
166 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
167 OptSpecifier GroupWithValue,
168 std::vector<std::string> &Diagnostics) {
169 for (auto *A : Args.filtered(Group)) {
170 if (A->getOption().getKind() == Option::FlagClass) {
171 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
172 // its name (minus the "W" or "R" at the beginning) to the warning list.
173 Diagnostics.push_back(A->getOption().getName().drop_front(1));
174 } else if (A->getOption().matches(GroupWithValue)) {
175 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group.
176 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-"));
178 // Otherwise, add its value (for OPT_W_Joined and similar).
179 for (const auto *Arg : A->getValues())
180 Diagnostics.emplace_back(Arg);
185 // Parse the Static Analyzer configuration. If \p Diags is set to nullptr,
186 // it won't verify the input.
187 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts,
188 DiagnosticsEngine *Diags);
190 static void getAllNoBuiltinFuncValues(ArgList &Args,
191 std::vector<std::string> &Funcs) {
192 SmallVector<const char *, 8> Values;
193 for (const auto &Arg : Args) {
194 const Option &O = Arg->getOption();
195 if (O.matches(options::OPT_fno_builtin_)) {
196 const char *FuncName = Arg->getValue();
197 if (Builtin::Context::isBuiltinFunc(FuncName))
198 Values.push_back(FuncName);
201 Funcs.insert(Funcs.end(), Values.begin(), Values.end());
204 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
205 DiagnosticsEngine &Diags) {
207 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
208 StringRef Name = A->getValue();
209 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
210 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
211 .Case(CMDFLAG, NAME##Model)
212 #include "clang/StaticAnalyzer/Core/Analyses.def"
214 if (Value == NumStores) {
215 Diags.Report(diag::err_drv_invalid_value)
216 << A->getAsString(Args) << Name;
219 Opts.AnalysisStoreOpt = Value;
223 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
224 StringRef Name = A->getValue();
225 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
226 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
227 .Case(CMDFLAG, NAME##Model)
228 #include "clang/StaticAnalyzer/Core/Analyses.def"
229 .Default(NumConstraints);
230 if (Value == NumConstraints) {
231 Diags.Report(diag::err_drv_invalid_value)
232 << A->getAsString(Args) << Name;
235 Opts.AnalysisConstraintsOpt = Value;
239 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
240 StringRef Name = A->getValue();
241 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
242 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
243 .Case(CMDFLAG, PD_##NAME)
244 #include "clang/StaticAnalyzer/Core/Analyses.def"
245 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
246 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
247 Diags.Report(diag::err_drv_invalid_value)
248 << A->getAsString(Args) << Name;
251 Opts.AnalysisDiagOpt = Value;
255 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
256 StringRef Name = A->getValue();
257 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
258 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
260 #include "clang/StaticAnalyzer/Core/Analyses.def"
261 .Default(NumPurgeModes);
262 if (Value == NumPurgeModes) {
263 Diags.Report(diag::err_drv_invalid_value)
264 << A->getAsString(Args) << Name;
267 Opts.AnalysisPurgeOpt = Value;
271 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
272 StringRef Name = A->getValue();
273 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
274 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
276 #include "clang/StaticAnalyzer/Core/Analyses.def"
277 .Default(NumInliningModes);
278 if (Value == NumInliningModes) {
279 Diags.Report(diag::err_drv_invalid_value)
280 << A->getAsString(Args) << Name;
283 Opts.InliningMode = Value;
287 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
288 Opts.ShowConfigOptionsList = Args.hasArg(OPT_analyzer_config_help);
289 Opts.ShowEnabledCheckerList = Args.hasArg(OPT_analyzer_list_enabled_checkers);
290 Opts.ShouldEmitErrorsOnInvalidConfigValue =
291 /* negated */!llvm::StringSwitch<bool>(
292 Args.getLastArgValue(OPT_analyzer_config_compatibility_mode))
294 .Case("false", false)
296 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks);
298 Opts.visualizeExplodedGraphWithGraphViz =
299 Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
300 Opts.DumpExplodedGraphTo = Args.getLastArgValue(OPT_analyzer_dump_egraph);
301 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
302 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
303 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
304 Opts.AnalyzeNestedBlocks =
305 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
306 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
307 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
308 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
309 Opts.maxBlockVisitOnPath =
310 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags);
311 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
312 Opts.InlineMaxStackDepth =
313 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth,
314 Opts.InlineMaxStackDepth, Diags);
316 Opts.CheckersControlList.clear();
318 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) {
320 bool enable = (A->getOption().getID() == OPT_analyzer_checker);
321 // We can have a list of comma separated checker names, e.g:
322 // '-analyzer-checker=cocoa,unix'
323 StringRef checkerList = A->getValue();
324 SmallVector<StringRef, 4> checkers;
325 checkerList.split(checkers, ",");
326 for (auto checker : checkers)
327 Opts.CheckersControlList.emplace_back(checker, enable);
330 // Go through the analyzer configuration options.
331 for (const auto *A : Args.filtered(OPT_analyzer_config)) {
333 // We can have a list of comma separated config names, e.g:
334 // '-analyzer-config key1=val1,key2=val2'
335 StringRef configList = A->getValue();
336 SmallVector<StringRef, 4> configVals;
337 configList.split(configVals, ",");
338 for (const auto &configVal : configVals) {
340 std::tie(key, val) = configVal.split("=");
342 Diags.Report(SourceLocation(),
343 diag::err_analyzer_config_no_value) << configVal;
347 if (val.find('=') != StringRef::npos) {
348 Diags.Report(SourceLocation(),
349 diag::err_analyzer_config_multiple_values)
355 // TODO: Check checker options too, possibly in CheckerRegistry.
356 // Leave unknown non-checker configs unclaimed.
357 if (!key.contains(":") && Opts.isUnknownAnalyzerConfig(key)) {
358 if (Opts.ShouldEmitErrorsOnInvalidConfigValue)
359 Diags.Report(diag::err_analyzer_config_unknown) << key;
364 Opts.Config[key] = val;
368 if (Opts.ShouldEmitErrorsOnInvalidConfigValue)
369 parseAnalyzerConfigs(Opts, &Diags);
371 parseAnalyzerConfigs(Opts, nullptr);
373 llvm::raw_string_ostream os(Opts.FullCompilerInvocation);
374 for (unsigned i = 0; i < Args.getNumInputArgStrings(); ++i) {
377 os << Args.getArgString(i);
384 static StringRef getStringOption(AnalyzerOptions::ConfigTable &Config,
385 StringRef OptionName, StringRef DefaultVal) {
386 return Config.insert({OptionName, DefaultVal}).first->second;
389 static void initOption(AnalyzerOptions::ConfigTable &Config,
390 DiagnosticsEngine *Diags,
391 StringRef &OptionField, StringRef Name,
392 StringRef DefaultVal) {
393 // String options may be known to invalid (e.g. if the expected string is a
394 // file name, but the file does not exist), those will have to be checked in
396 OptionField = getStringOption(Config, Name, DefaultVal);
399 static void initOption(AnalyzerOptions::ConfigTable &Config,
400 DiagnosticsEngine *Diags,
401 bool &OptionField, StringRef Name, bool DefaultVal) {
402 auto PossiblyInvalidVal = llvm::StringSwitch<Optional<bool>>(
403 getStringOption(Config, Name, (DefaultVal ? "true" : "false")))
405 .Case("false", false)
408 if (!PossiblyInvalidVal) {
410 Diags->Report(diag::err_analyzer_config_invalid_input)
411 << Name << "a boolean";
413 OptionField = DefaultVal;
415 OptionField = PossiblyInvalidVal.getValue();
418 static void initOption(AnalyzerOptions::ConfigTable &Config,
419 DiagnosticsEngine *Diags,
420 unsigned &OptionField, StringRef Name,
421 unsigned DefaultVal) {
423 OptionField = DefaultVal;
424 bool HasFailed = getStringOption(Config, Name, std::to_string(DefaultVal))
425 .getAsInteger(10, OptionField);
426 if (Diags && HasFailed)
427 Diags->Report(diag::err_analyzer_config_invalid_input)
428 << Name << "an unsigned";
431 static void parseAnalyzerConfigs(AnalyzerOptions &AnOpts,
432 DiagnosticsEngine *Diags) {
433 // TODO: There's no need to store the entire configtable, it'd be plenty
434 // enough tostore checker options.
436 #define ANALYZER_OPTION(TYPE, NAME, CMDFLAG, DESC, DEFAULT_VAL) \
437 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEFAULT_VAL);
439 #define ANALYZER_OPTION_DEPENDS_ON_USER_MODE(TYPE, NAME, CMDFLAG, DESC, \
440 SHALLOW_VAL, DEEP_VAL) \
441 switch (AnOpts.getUserMode()) { \
443 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, SHALLOW_VAL); \
446 initOption(AnOpts.Config, Diags, AnOpts.NAME, CMDFLAG, DEEP_VAL); \
450 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.def"
451 #undef ANALYZER_OPTION
452 #undef ANALYZER_OPTION_DEPENDS_ON_USER_MODE
454 // At this point, AnalyzerOptions is configured. Let's validate some options.
459 if (!AnOpts.CTUDir.empty() && !llvm::sys::fs::is_directory(AnOpts.CTUDir))
460 Diags->Report(diag::err_analyzer_config_invalid_input) << "ctu-dir"
463 if (!AnOpts.ModelPath.empty() &&
464 !llvm::sys::fs::is_directory(AnOpts.ModelPath))
465 Diags->Report(diag::err_analyzer_config_invalid_input) << "model-path"
469 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
470 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
471 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
475 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
476 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
477 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments);
480 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) {
481 if (Arg *A = Args.getLastArg(OPT_mcode_model)) {
482 StringRef Value = A->getValue();
483 if (Value == "small" || Value == "kernel" || Value == "medium" ||
484 Value == "large" || Value == "tiny")
486 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
491 static llvm::Reloc::Model getRelocModel(ArgList &Args,
492 DiagnosticsEngine &Diags) {
493 if (Arg *A = Args.getLastArg(OPT_mrelocation_model)) {
494 StringRef Value = A->getValue();
495 auto RM = llvm::StringSwitch<llvm::Optional<llvm::Reloc::Model>>(Value)
496 .Case("static", llvm::Reloc::Static)
497 .Case("pic", llvm::Reloc::PIC_)
498 .Case("ropi", llvm::Reloc::ROPI)
499 .Case("rwpi", llvm::Reloc::RWPI)
500 .Case("ropi-rwpi", llvm::Reloc::ROPI_RWPI)
501 .Case("dynamic-no-pic", llvm::Reloc::DynamicNoPIC)
505 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
507 return llvm::Reloc::PIC_;
510 /// Create a new Regex instance out of the string value in \p RpassArg.
511 /// It returns a pointer to the newly generated Regex instance.
512 static std::shared_ptr<llvm::Regex>
513 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args,
515 StringRef Val = RpassArg->getValue();
516 std::string RegexError;
517 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
518 if (!Pattern->isValid(RegexError)) {
519 Diags.Report(diag::err_drv_optimization_remark_pattern)
520 << RegexError << RpassArg->getAsString(Args);
526 static bool parseDiagnosticLevelMask(StringRef FlagName,
527 const std::vector<std::string> &Levels,
528 DiagnosticsEngine *Diags,
529 DiagnosticLevelMask &M) {
531 for (const auto &Level : Levels) {
532 DiagnosticLevelMask const PM =
533 llvm::StringSwitch<DiagnosticLevelMask>(Level)
534 .Case("note", DiagnosticLevelMask::Note)
535 .Case("remark", DiagnosticLevelMask::Remark)
536 .Case("warning", DiagnosticLevelMask::Warning)
537 .Case("error", DiagnosticLevelMask::Error)
538 .Default(DiagnosticLevelMask::None);
539 if (PM == DiagnosticLevelMask::None) {
542 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level;
549 static void parseSanitizerKinds(StringRef FlagName,
550 const std::vector<std::string> &Sanitizers,
551 DiagnosticsEngine &Diags, SanitizerSet &S) {
552 for (const auto &Sanitizer : Sanitizers) {
553 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false);
555 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
561 static void parseXRayInstrumentationBundle(StringRef FlagName, StringRef Bundle,
562 ArgList &Args, DiagnosticsEngine &D,
564 llvm::SmallVector<StringRef, 2> BundleParts;
565 llvm::SplitString(Bundle, BundleParts, ",");
566 for (const auto B : BundleParts) {
567 auto Mask = parseXRayInstrValue(B);
568 if (Mask == XRayInstrKind::None)
570 D.Report(diag::err_drv_invalid_value) << FlagName << Bundle;
573 else if (Mask == XRayInstrKind::All)
580 // Set the profile kind for fprofile-instrument.
581 static void setPGOInstrumentor(CodeGenOptions &Opts, ArgList &Args,
582 DiagnosticsEngine &Diags) {
583 Arg *A = Args.getLastArg(OPT_fprofile_instrument_EQ);
586 StringRef S = A->getValue();
587 unsigned I = llvm::StringSwitch<unsigned>(S)
588 .Case("none", CodeGenOptions::ProfileNone)
589 .Case("clang", CodeGenOptions::ProfileClangInstr)
590 .Case("llvm", CodeGenOptions::ProfileIRInstr)
593 Diags.Report(diag::err_drv_invalid_pgo_instrumentor) << A->getAsString(Args)
597 auto Instrumentor = static_cast<CodeGenOptions::ProfileInstrKind>(I);
598 Opts.setProfileInstr(Instrumentor);
601 // Set the profile kind using fprofile-instrument-use-path.
602 static void setPGOUseInstrumentor(CodeGenOptions &Opts,
603 const Twine &ProfileName) {
604 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName);
605 // In error, return silently and let Clang PGOUse report the error message.
606 if (auto E = ReaderOrErr.takeError()) {
607 llvm::consumeError(std::move(E));
608 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
611 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader =
612 std::move(ReaderOrErr.get());
613 if (PGOReader->isIRLevelProfile())
614 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr);
616 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
619 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
620 DiagnosticsEngine &Diags,
621 const TargetOptions &TargetOpts,
622 const FrontendOptions &FrontendOpts) {
624 llvm::Triple Triple = llvm::Triple(TargetOpts.Triple);
626 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
627 // TODO: This could be done in Driver
628 unsigned MaxOptLevel = 3;
629 if (OptimizationLevel > MaxOptLevel) {
630 // If the optimization level is not supported, fall back on the default
632 Diags.Report(diag::warn_drv_optimization_value)
633 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
634 OptimizationLevel = MaxOptLevel;
636 Opts.OptimizationLevel = OptimizationLevel;
638 // At O0 we want to fully disable inlining outside of cases marked with
639 // 'alwaysinline' that are required for correctness.
640 Opts.setInlining((Opts.OptimizationLevel == 0)
641 ? CodeGenOptions::OnlyAlwaysInlining
642 : CodeGenOptions::NormalInlining);
643 // Explicit inlining flags can disable some or all inlining even at
644 // optimization levels above zero.
645 if (Arg *InlineArg = Args.getLastArg(
646 options::OPT_finline_functions, options::OPT_finline_hint_functions,
647 options::OPT_fno_inline_functions, options::OPT_fno_inline)) {
648 if (Opts.OptimizationLevel > 0) {
649 const Option &InlineOpt = InlineArg->getOption();
650 if (InlineOpt.matches(options::OPT_finline_functions))
651 Opts.setInlining(CodeGenOptions::NormalInlining);
652 else if (InlineOpt.matches(options::OPT_finline_hint_functions))
653 Opts.setInlining(CodeGenOptions::OnlyHintInlining);
655 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining);
659 Opts.ExperimentalNewPassManager = Args.hasFlag(
660 OPT_fexperimental_new_pass_manager, OPT_fno_experimental_new_pass_manager,
661 /* Default */ ENABLE_EXPERIMENTAL_NEW_PASS_MANAGER);
663 Opts.DebugPassManager =
664 Args.hasFlag(OPT_fdebug_pass_manager, OPT_fno_debug_pass_manager,
665 /* Default */ false);
667 if (Arg *A = Args.getLastArg(OPT_fveclib)) {
668 StringRef Name = A->getValue();
669 if (Name == "Accelerate")
670 Opts.setVecLib(CodeGenOptions::Accelerate);
671 else if (Name == "SVML")
672 Opts.setVecLib(CodeGenOptions::SVML);
673 else if (Name == "none")
674 Opts.setVecLib(CodeGenOptions::NoLibrary);
676 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
679 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) {
681 llvm::StringSwitch<unsigned>(A->getValue())
682 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly)
683 .Case("line-directives-only", codegenoptions::DebugDirectivesOnly)
684 .Case("limited", codegenoptions::LimitedDebugInfo)
685 .Case("standalone", codegenoptions::FullDebugInfo)
688 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
691 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val));
693 if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) {
694 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue())
695 .Case("gdb", unsigned(llvm::DebuggerKind::GDB))
696 .Case("lldb", unsigned(llvm::DebuggerKind::LLDB))
697 .Case("sce", unsigned(llvm::DebuggerKind::SCE))
700 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
703 Opts.setDebuggerTuning(static_cast<llvm::DebuggerKind>(Val));
705 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags);
706 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
707 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview);
708 Opts.CodeViewGHash = Args.hasArg(OPT_gcodeview_ghash);
709 Opts.MacroDebugInfo = Args.hasArg(OPT_debug_info_macro);
710 Opts.WholeProgramVTables = Args.hasArg(OPT_fwhole_program_vtables);
711 Opts.LTOVisibilityPublicStd = Args.hasArg(OPT_flto_visibility_public_std);
712 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
713 Opts.SplitDwarfInlining = !Args.hasArg(OPT_fno_split_dwarf_inlining);
716 Args.getLastArg(OPT_enable_split_dwarf, OPT_enable_split_dwarf_EQ)) {
717 if (A->getOption().matches(options::OPT_enable_split_dwarf)) {
718 Opts.setSplitDwarfMode(CodeGenOptions::SplitFileFission);
720 StringRef Name = A->getValue();
721 if (Name == "single")
722 Opts.setSplitDwarfMode(CodeGenOptions::SingleFileFission);
723 else if (Name == "split")
724 Opts.setSplitDwarfMode(CodeGenOptions::SplitFileFission);
726 Diags.Report(diag::err_drv_invalid_value)
727 << A->getAsString(Args) << Name;
731 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs);
732 Opts.DebugExplicitImport = Args.hasArg(OPT_dwarf_explicit_import);
733 Opts.DebugFwdTemplateParams = Args.hasArg(OPT_debug_forward_template_params);
734 Opts.EmbedSource = Args.hasArg(OPT_gembed_source);
736 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ))
737 Opts.DebugPrefixMap.insert(StringRef(Arg).split('='));
740 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists))
741 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists;
743 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes);
744 Opts.DisableLifetimeMarkers = Args.hasArg(OPT_disable_lifetimemarkers);
745 Opts.DisableO0ImplyOptNone = Args.hasArg(OPT_disable_O0_optnone);
746 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
747 Opts.IndirectTlsSegRefs = Args.hasArg(OPT_mno_tls_direct_seg_refs);
748 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
749 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
750 OPT_fuse_register_sized_bitfield_access);
751 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
752 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
753 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) &&
754 Args.hasArg(OPT_new_struct_path_tbaa);
755 Opts.FineGrainedBitfieldAccesses =
756 Args.hasFlag(OPT_ffine_grained_bitfield_accesses,
757 OPT_fno_fine_grained_bitfield_accesses, false);
758 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
759 Opts.RecordCommandLine = Args.getLastArgValue(OPT_record_command_line);
760 Opts.MergeAllConstants = Args.hasArg(OPT_fmerge_all_constants);
761 Opts.NoCommon = Args.hasArg(OPT_fno_common);
762 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
763 Opts.OptimizeSize = getOptimizationLevelSize(Args);
764 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
765 Args.hasArg(OPT_ffreestanding));
766 if (Opts.SimplifyLibCalls)
767 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
769 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
770 (Opts.OptimizationLevel > 1));
771 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
773 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
774 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
775 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
776 Opts.DebugInfoForProfiling = Args.hasFlag(
777 OPT_fdebug_info_for_profiling, OPT_fno_debug_info_for_profiling, false);
778 Opts.DebugNameTable = static_cast<unsigned>(
779 Args.hasArg(OPT_ggnu_pubnames)
780 ? llvm::DICompileUnit::DebugNameTableKind::GNU
781 : Args.hasArg(OPT_gpubnames)
782 ? llvm::DICompileUnit::DebugNameTableKind::Default
783 : llvm::DICompileUnit::DebugNameTableKind::None);
784 Opts.DebugRangesBaseAddress = Args.hasArg(OPT_fdebug_ranges_base_address);
786 setPGOInstrumentor(Opts, Args, Diags);
787 Opts.InstrProfileOutput =
788 Args.getLastArgValue(OPT_fprofile_instrument_path_EQ);
789 Opts.ProfileInstrumentUsePath =
790 Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ);
791 if (!Opts.ProfileInstrumentUsePath.empty())
792 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath);
793 Opts.ProfileRemappingFile =
794 Args.getLastArgValue(OPT_fprofile_remapping_file_EQ);
795 if (!Opts.ProfileRemappingFile.empty() && !Opts.ExperimentalNewPassManager) {
796 Diags.Report(diag::err_drv_argument_only_allowed_with)
797 << Args.getLastArg(OPT_fprofile_remapping_file_EQ)->getAsString(Args)
798 << "-fexperimental-new-pass-manager";
801 Opts.CoverageMapping =
802 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false);
803 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
804 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
805 Opts.PreserveAsmComments = !Args.hasArg(OPT_fno_preserve_as_comments);
806 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
807 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
808 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
809 Opts.RegisterGlobalDtorsWithAtExit =
810 Args.hasArg(OPT_fregister_global_dtors_with_atexit);
811 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
812 Opts.CodeModel = TargetOpts.CodeModel;
813 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
815 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg));
816 Opts.DisableFree = Args.hasArg(OPT_disable_free);
817 Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names);
818 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
819 Opts.NoEscapingBlockTailCalls =
820 Args.hasArg(OPT_fno_escaping_block_tail_calls);
821 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
822 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable) ||
823 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
824 Args.hasArg(OPT_cl_fast_relaxed_math);
825 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
826 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
827 Args.hasArg(OPT_cl_finite_math_only) ||
828 Args.hasArg(OPT_cl_fast_relaxed_math));
829 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
830 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
831 Args.hasArg(OPT_cl_finite_math_only) ||
832 Args.hasArg(OPT_cl_fast_relaxed_math));
833 Opts.NoSignedZeros = (Args.hasArg(OPT_fno_signed_zeros) ||
834 Args.hasArg(OPT_cl_no_signed_zeros) ||
835 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
836 Args.hasArg(OPT_cl_fast_relaxed_math));
837 Opts.Reassociate = Args.hasArg(OPT_mreassociate);
838 Opts.FlushDenorm = Args.hasArg(OPT_cl_denorms_are_zero) ||
839 (Args.hasArg(OPT_fcuda_is_device) &&
840 Args.hasArg(OPT_fcuda_flush_denormals_to_zero));
841 Opts.CorrectlyRoundedDivSqrt =
842 Args.hasArg(OPT_cl_fp32_correctly_rounded_divide_sqrt);
844 Args.hasArg(OPT_cl_uniform_work_group_size);
845 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ);
846 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math);
847 Opts.NoTrappingMath = Args.hasArg(OPT_fno_trapping_math);
848 Opts.StrictFloatCastOverflow =
849 !Args.hasArg(OPT_fno_strict_float_cast_overflow);
851 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
852 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
853 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
854 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
855 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
856 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
857 Opts.IncrementalLinkerCompatible =
858 Args.hasArg(OPT_mincremental_linker_compatible);
859 Opts.PIECopyRelocations =
860 Args.hasArg(OPT_mpie_copy_relocations);
861 Opts.NoPLT = Args.hasArg(OPT_fno_plt);
862 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
863 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
864 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
865 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
866 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
867 Opts.StrictReturn = !Args.hasArg(OPT_fno_strict_return);
868 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers);
869 Opts.ForceEmitVTables = Args.hasArg(OPT_fforce_emit_vtables);
870 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
871 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
872 Args.hasArg(OPT_cl_fast_relaxed_math);
873 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
874 Opts.RelocationModel = getRelocModel(Args, Diags);
875 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
876 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
877 Diags.Report(diag::err_drv_invalid_value)
878 << Args.getLastArg(OPT_mthread_model)->getAsString(Args)
880 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
881 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
883 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
884 OPT_fno_function_sections, false);
885 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
886 OPT_fno_data_sections, false);
887 Opts.StackSizeSection =
888 Args.hasFlag(OPT_fstack_size_section, OPT_fno_stack_size_section, false);
889 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names,
890 OPT_fno_unique_section_names, true);
892 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
894 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables);
896 Opts.NullPointerIsValid = Args.hasArg(OPT_fno_delete_null_pointer_checks);
898 Opts.ProfileSampleAccurate = Args.hasArg(OPT_fprofile_sample_accurate);
900 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ);
901 Opts.PrepareForThinLTO = false;
902 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) {
903 StringRef S = A->getValue();
905 Opts.PrepareForThinLTO = true;
906 else if (S != "full")
907 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S;
909 Opts.LTOUnit = Args.hasFlag(OPT_flto_unit, OPT_fno_lto_unit, false);
910 Opts.EnableSplitLTOUnit = Args.hasArg(OPT_fsplit_lto_unit);
911 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) {
912 if (IK.getLanguage() != InputKind::LLVM_IR)
913 Diags.Report(diag::err_drv_argument_only_allowed_with)
914 << A->getAsString(Args) << "-x ir";
915 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ);
917 if (Arg *A = Args.getLastArg(OPT_save_temps_EQ))
918 Opts.SaveTempsFilePrefix =
919 llvm::StringSwitch<std::string>(A->getValue())
920 .Case("obj", FrontendOpts.OutputFile)
921 .Default(llvm::sys::path::filename(FrontendOpts.OutputFile).str());
923 Opts.ThinLinkBitcodeFile = Args.getLastArgValue(OPT_fthin_link_bitcode_EQ);
925 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile);
927 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
928 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
930 Opts.PreferVectorWidth = Args.getLastArgValue(OPT_mprefer_vector_width_EQ);
932 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
933 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
935 Opts.ControlFlowGuard = Args.hasArg(OPT_cfguard);
937 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
938 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
939 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
940 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
941 Opts.CoverageDataFile = Args.getLastArgValue(OPT_coverage_data_file);
942 Opts.CoverageNotesFile = Args.getLastArgValue(OPT_coverage_notes_file);
943 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
944 Opts.CoverageNoFunctionNamesInData =
945 Args.hasArg(OPT_coverage_no_function_names_in_data);
946 Opts.ProfileFilterFiles =
947 Args.getLastArgValue(OPT_fprofile_filter_files_EQ);
948 Opts.ProfileExcludeFiles =
949 Args.getLastArgValue(OPT_fprofile_exclude_files_EQ);
950 Opts.CoverageExitBlockBeforeBody =
951 Args.hasArg(OPT_coverage_exit_block_before_body);
952 if (Args.hasArg(OPT_coverage_version_EQ)) {
953 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
954 if (CoverageVersion.size() != 4) {
955 Diags.Report(diag::err_drv_invalid_value)
956 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
959 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
963 // Handle -fembed-bitcode option.
964 if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) {
965 StringRef Name = A->getValue();
966 unsigned Model = llvm::StringSwitch<unsigned>(Name)
967 .Case("off", CodeGenOptions::Embed_Off)
968 .Case("all", CodeGenOptions::Embed_All)
969 .Case("bitcode", CodeGenOptions::Embed_Bitcode)
970 .Case("marker", CodeGenOptions::Embed_Marker)
973 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
976 Opts.setEmbedBitcode(
977 static_cast<CodeGenOptions::EmbedBitcodeKind>(Model));
979 // FIXME: For backend options that are not yet recorded as function
980 // attributes in the IR, keep track of them so we can embed them in a
981 // separate data section and use them when building the bitcode.
982 if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) {
983 for (const auto &A : Args) {
984 // Do not encode output and input.
985 if (A->getOption().getID() == options::OPT_o ||
986 A->getOption().getID() == options::OPT_INPUT ||
987 A->getOption().getID() == options::OPT_x ||
988 A->getOption().getID() == options::OPT_fembed_bitcode ||
989 (A->getOption().getGroup().isValid() &&
990 A->getOption().getGroup().getID() == options::OPT_W_Group))
993 A->render(Args, ASL);
994 for (const auto &arg : ASL) {
995 StringRef ArgStr(arg);
996 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end());
997 // using \00 to separate each commandline options.
998 Opts.CmdArgs.push_back('\0');
1003 Opts.PreserveVec3Type = Args.hasArg(OPT_fpreserve_vec3_type);
1004 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
1005 Opts.InstrumentFunctionsAfterInlining =
1006 Args.hasArg(OPT_finstrument_functions_after_inlining);
1007 Opts.InstrumentFunctionEntryBare =
1008 Args.hasArg(OPT_finstrument_function_entry_bare);
1010 Opts.XRayInstrumentFunctions =
1011 Args.hasArg(OPT_fxray_instrument);
1012 Opts.XRayAlwaysEmitCustomEvents =
1013 Args.hasArg(OPT_fxray_always_emit_customevents);
1014 Opts.XRayAlwaysEmitTypedEvents =
1015 Args.hasArg(OPT_fxray_always_emit_typedevents);
1016 Opts.XRayInstructionThreshold =
1017 getLastArgIntValue(Args, OPT_fxray_instruction_threshold_EQ, 200, Diags);
1019 auto XRayInstrBundles =
1020 Args.getAllArgValues(OPT_fxray_instrumentation_bundle);
1021 if (XRayInstrBundles.empty())
1022 Opts.XRayInstrumentationBundle.Mask = XRayInstrKind::All;
1024 for (const auto &A : XRayInstrBundles)
1025 parseXRayInstrumentationBundle("-fxray-instrumentation-bundle=", A, Args,
1026 Diags, Opts.XRayInstrumentationBundle);
1028 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
1029 Opts.CallFEntry = Args.hasArg(OPT_mfentry);
1030 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
1032 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) {
1033 StringRef Name = A->getValue();
1034 if (Name == "full") {
1035 Opts.CFProtectionReturn = 1;
1036 Opts.CFProtectionBranch = 1;
1037 } else if (Name == "return")
1038 Opts.CFProtectionReturn = 1;
1039 else if (Name == "branch")
1040 Opts.CFProtectionBranch = 1;
1041 else if (Name != "none") {
1042 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1047 if (const Arg *A = Args.getLastArg(OPT_compress_debug_sections,
1048 OPT_compress_debug_sections_EQ)) {
1049 if (A->getOption().getID() == OPT_compress_debug_sections) {
1050 // TODO: be more clever about the compression type auto-detection
1051 Opts.setCompressDebugSections(llvm::DebugCompressionType::GNU);
1053 auto DCT = llvm::StringSwitch<llvm::DebugCompressionType>(A->getValue())
1054 .Case("none", llvm::DebugCompressionType::None)
1055 .Case("zlib", llvm::DebugCompressionType::Z)
1056 .Case("zlib-gnu", llvm::DebugCompressionType::GNU)
1057 .Default(llvm::DebugCompressionType::None);
1058 Opts.setCompressDebugSections(DCT);
1062 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations);
1063 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
1065 Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_builtin_bitcode)) {
1066 CodeGenOptions::BitcodeFileToLink F;
1067 F.Filename = A->getValue();
1068 if (A->getOption().matches(OPT_mlink_builtin_bitcode)) {
1069 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded;
1070 // When linking CUDA bitcode, propagate function attributes so that
1071 // e.g. libdevice gets fast-math attrs if we're building with fast-math.
1072 F.PropagateAttrs = true;
1073 F.Internalize = true;
1075 Opts.LinkBitcodeFiles.push_back(F);
1077 Opts.SanitizeCoverageType =
1078 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags);
1079 Opts.SanitizeCoverageIndirectCalls =
1080 Args.hasArg(OPT_fsanitize_coverage_indirect_calls);
1081 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb);
1082 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp);
1083 Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div);
1084 Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep);
1085 Opts.SanitizeCoverage8bitCounters =
1086 Args.hasArg(OPT_fsanitize_coverage_8bit_counters);
1087 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc);
1088 Opts.SanitizeCoverageTracePCGuard =
1089 Args.hasArg(OPT_fsanitize_coverage_trace_pc_guard);
1090 Opts.SanitizeCoverageNoPrune = Args.hasArg(OPT_fsanitize_coverage_no_prune);
1091 Opts.SanitizeCoverageInline8bitCounters =
1092 Args.hasArg(OPT_fsanitize_coverage_inline_8bit_counters);
1093 Opts.SanitizeCoveragePCTable = Args.hasArg(OPT_fsanitize_coverage_pc_table);
1094 Opts.SanitizeCoverageStackDepth =
1095 Args.hasArg(OPT_fsanitize_coverage_stack_depth);
1096 Opts.SanitizeMemoryTrackOrigins =
1097 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
1098 Opts.SanitizeMemoryUseAfterDtor =
1099 Args.hasFlag(OPT_fsanitize_memory_use_after_dtor,
1100 OPT_fno_sanitize_memory_use_after_dtor,
1102 Opts.SanitizeMinimalRuntime = Args.hasArg(OPT_fsanitize_minimal_runtime);
1103 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso);
1104 Opts.SanitizeCfiICallGeneralizePointers =
1105 Args.hasArg(OPT_fsanitize_cfi_icall_generalize_pointers);
1106 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats);
1107 if (Arg *A = Args.getLastArg(
1108 OPT_fsanitize_address_poison_custom_array_cookie,
1109 OPT_fno_sanitize_address_poison_custom_array_cookie)) {
1110 Opts.SanitizeAddressPoisonCustomArrayCookie =
1111 A->getOption().getID() ==
1112 OPT_fsanitize_address_poison_custom_array_cookie;
1114 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_after_scope,
1115 OPT_fno_sanitize_address_use_after_scope)) {
1116 Opts.SanitizeAddressUseAfterScope =
1117 A->getOption().getID() == OPT_fsanitize_address_use_after_scope;
1119 Opts.SanitizeAddressGlobalsDeadStripping =
1120 Args.hasArg(OPT_fsanitize_address_globals_dead_stripping);
1121 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_odr_indicator,
1122 OPT_fno_sanitize_address_use_odr_indicator)) {
1123 Opts.SanitizeAddressUseOdrIndicator =
1124 A->getOption().getID() == OPT_fsanitize_address_use_odr_indicator;
1126 Opts.SSPBufferSize =
1127 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
1128 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
1129 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
1130 StringRef Val = A->getValue();
1131 unsigned StackAlignment = Opts.StackAlignment;
1132 Val.getAsInteger(10, StackAlignment);
1133 Opts.StackAlignment = StackAlignment;
1136 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) {
1137 StringRef Val = A->getValue();
1138 unsigned StackProbeSize = Opts.StackProbeSize;
1139 Val.getAsInteger(0, StackProbeSize);
1140 Opts.StackProbeSize = StackProbeSize;
1143 Opts.NoStackArgProbe = Args.hasArg(OPT_mno_stack_arg_probe);
1145 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
1146 StringRef Name = A->getValue();
1147 unsigned Method = llvm::StringSwitch<unsigned>(Name)
1148 .Case("legacy", CodeGenOptions::Legacy)
1149 .Case("non-legacy", CodeGenOptions::NonLegacy)
1150 .Case("mixed", CodeGenOptions::Mixed)
1152 if (Method == ~0U) {
1153 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1156 Opts.setObjCDispatchMethod(
1157 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
1162 if (Args.hasArg(OPT_fno_objc_convert_messages_to_runtime_calls))
1163 Opts.ObjCConvertMessagesToRuntimeCalls = 0;
1165 if (Args.getLastArg(OPT_femulated_tls) ||
1166 Args.getLastArg(OPT_fno_emulated_tls)) {
1167 Opts.ExplicitEmulatedTLS = true;
1169 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false);
1172 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
1173 StringRef Name = A->getValue();
1174 unsigned Model = llvm::StringSwitch<unsigned>(Name)
1175 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
1176 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
1177 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
1178 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
1181 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1184 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
1188 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) {
1189 StringRef Val = A->getValue();
1191 Opts.FPDenormalMode = "ieee";
1192 else if (Val == "preserve-sign")
1193 Opts.FPDenormalMode = "preserve-sign";
1194 else if (Val == "positive-zero")
1195 Opts.FPDenormalMode = "positive-zero";
1197 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
1200 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
1201 if (A->getOption().matches(OPT_fpcc_struct_return)) {
1202 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
1204 assert(A->getOption().matches(OPT_freg_struct_return));
1205 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
1209 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
1210 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option);
1211 bool NeedLocTracking = false;
1213 Opts.OptRecordFile = Args.getLastArgValue(OPT_opt_record_file);
1214 if (!Opts.OptRecordFile.empty())
1215 NeedLocTracking = true;
1217 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
1218 Opts.OptimizationRemarkPattern =
1219 GenerateOptimizationRemarkRegex(Diags, Args, A);
1220 NeedLocTracking = true;
1223 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
1224 Opts.OptimizationRemarkMissedPattern =
1225 GenerateOptimizationRemarkRegex(Diags, Args, A);
1226 NeedLocTracking = true;
1229 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
1230 Opts.OptimizationRemarkAnalysisPattern =
1231 GenerateOptimizationRemarkRegex(Diags, Args, A);
1232 NeedLocTracking = true;
1235 Opts.DiagnosticsWithHotness =
1236 Args.hasArg(options::OPT_fdiagnostics_show_hotness);
1237 bool UsingSampleProfile = !Opts.SampleProfileFile.empty();
1238 bool UsingProfile = UsingSampleProfile ||
1239 (Opts.getProfileUse() != CodeGenOptions::ProfileNone);
1241 if (Opts.DiagnosticsWithHotness && !UsingProfile &&
1242 // An IR file will contain PGO as metadata
1243 IK.getLanguage() != InputKind::LLVM_IR)
1244 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
1245 << "-fdiagnostics-show-hotness";
1247 Opts.DiagnosticsHotnessThreshold = getLastArgUInt64Value(
1248 Args, options::OPT_fdiagnostics_hotness_threshold_EQ, 0);
1249 if (Opts.DiagnosticsHotnessThreshold > 0 && !UsingProfile)
1250 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
1251 << "-fdiagnostics-hotness-threshold=";
1253 // If the user requested to use a sample profile for PGO, then the
1254 // backend will need to track source location information so the profile
1255 // can be incorporated into the IR.
1256 if (UsingSampleProfile)
1257 NeedLocTracking = true;
1259 // If the user requested a flag that requires source locations available in
1260 // the backend, make sure that the backend tracks source location information.
1261 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo)
1262 Opts.setDebugInfo(codegenoptions::LocTrackingOnly);
1264 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
1266 // Parse -fsanitize-recover= arguments.
1267 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
1268 parseSanitizerKinds("-fsanitize-recover=",
1269 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
1270 Opts.SanitizeRecover);
1271 parseSanitizerKinds("-fsanitize-trap=",
1272 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags,
1275 Opts.CudaGpuBinaryFileName =
1276 Args.getLastArgValue(OPT_fcuda_include_gpubinary);
1278 Opts.Backchain = Args.hasArg(OPT_mbackchain);
1280 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue(
1281 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags);
1283 Opts.EmitVersionIdentMetadata = Args.hasFlag(OPT_Qy, OPT_Qn, true);
1285 Opts.Addrsig = Args.hasArg(OPT_faddrsig);
1287 if (Arg *A = Args.getLastArg(OPT_msign_return_address_EQ)) {
1288 StringRef SignScope = A->getValue();
1290 if (SignScope.equals_lower("none"))
1291 Opts.setSignReturnAddress(CodeGenOptions::SignReturnAddressScope::None);
1292 else if (SignScope.equals_lower("all"))
1293 Opts.setSignReturnAddress(CodeGenOptions::SignReturnAddressScope::All);
1294 else if (SignScope.equals_lower("non-leaf"))
1295 Opts.setSignReturnAddress(
1296 CodeGenOptions::SignReturnAddressScope::NonLeaf);
1298 Diags.Report(diag::err_drv_invalid_value)
1299 << A->getAsString(Args) << SignScope;
1301 if (Arg *A = Args.getLastArg(OPT_msign_return_address_key_EQ)) {
1302 StringRef SignKey = A->getValue();
1303 if (!SignScope.empty() && !SignKey.empty()) {
1304 if (SignKey.equals_lower("a_key"))
1305 Opts.setSignReturnAddressKey(
1306 CodeGenOptions::SignReturnAddressKeyValue::AKey);
1307 else if (SignKey.equals_lower("b_key"))
1308 Opts.setSignReturnAddressKey(
1309 CodeGenOptions::SignReturnAddressKeyValue::BKey);
1311 Diags.Report(diag::err_drv_invalid_value)
1312 << A->getAsString(Args) << SignKey;
1317 Opts.BranchTargetEnforcement = Args.hasArg(OPT_mbranch_target_enforce);
1319 Opts.KeepStaticConsts = Args.hasArg(OPT_fkeep_static_consts);
1321 Opts.SpeculativeLoadHardening = Args.hasArg(OPT_mspeculative_load_hardening);
1323 Opts.DefaultFunctionAttrs = Args.getAllArgValues(OPT_default_function_attr);
1328 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
1330 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
1331 Opts.Targets = Args.getAllArgValues(OPT_MT);
1332 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
1333 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
1334 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
1335 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1336 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
1337 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
1338 if (Args.hasArg(OPT_show_includes)) {
1339 // Writing both /showIncludes and preprocessor output to stdout
1340 // would produce interleaved output, so use stderr for /showIncludes.
1341 // This behaves the same as cl.exe, when /E, /EP or /P are passed.
1342 if (Args.hasArg(options::OPT_E) || Args.hasArg(options::OPT_P))
1343 Opts.ShowIncludesDest = ShowIncludesDestination::Stderr;
1345 Opts.ShowIncludesDest = ShowIncludesDestination::Stdout;
1347 Opts.ShowIncludesDest = ShowIncludesDestination::None;
1349 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
1350 Opts.ModuleDependencyOutputDir =
1351 Args.getLastArgValue(OPT_module_dependency_dir);
1352 if (Args.hasArg(OPT_MV))
1353 Opts.OutputFormat = DependencyOutputFormat::NMake;
1354 // Add sanitizer blacklists as extra dependencies.
1355 // They won't be discovered by the regular preprocessor, so
1356 // we let make / ninja to know about this implicit dependency.
1357 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry);
1358 // Only the -fmodule-file=<file> form.
1359 for (const auto *A : Args.filtered(OPT_fmodule_file)) {
1360 StringRef Val = A->getValue();
1361 if (Val.find('=') == StringRef::npos)
1362 Opts.ExtraDeps.push_back(Val);
1366 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) {
1367 // Color diagnostics default to auto ("on" if terminal supports) in the driver
1368 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color.
1369 // Support both clang's -f[no-]color-diagnostics and gcc's
1370 // -f[no-]diagnostics-colors[=never|always|auto].
1375 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off;
1376 for (auto *A : Args) {
1377 const Option &O = A->getOption();
1378 if (O.matches(options::OPT_fcolor_diagnostics) ||
1379 O.matches(options::OPT_fdiagnostics_color)) {
1380 ShowColors = Colors_On;
1381 } else if (O.matches(options::OPT_fno_color_diagnostics) ||
1382 O.matches(options::OPT_fno_diagnostics_color)) {
1383 ShowColors = Colors_Off;
1384 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
1385 StringRef Value(A->getValue());
1386 if (Value == "always")
1387 ShowColors = Colors_On;
1388 else if (Value == "never")
1389 ShowColors = Colors_Off;
1390 else if (Value == "auto")
1391 ShowColors = Colors_Auto;
1394 return ShowColors == Colors_On ||
1395 (ShowColors == Colors_Auto &&
1396 llvm::sys::Process::StandardErrHasColors());
1399 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes,
1400 DiagnosticsEngine *Diags) {
1401 bool Success = true;
1402 for (const auto &Prefix : VerifyPrefixes) {
1403 // Every prefix must start with a letter and contain only alphanumeric
1404 // characters, hyphens, and underscores.
1405 auto BadChar = std::find_if(Prefix.begin(), Prefix.end(),
1406 [](char C){return !isAlphanumeric(C)
1407 && C != '-' && C != '_';});
1408 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) {
1411 Diags->Report(diag::err_drv_invalid_value) << "-verify=" << Prefix;
1412 Diags->Report(diag::note_drv_verify_prefix_spelling);
1419 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1420 DiagnosticsEngine *Diags,
1421 bool DefaultDiagColor, bool DefaultShowOpt) {
1422 bool Success = true;
1424 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
1426 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
1427 Opts.DiagnosticSerializationFile = A->getValue();
1428 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
1429 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
1430 Opts.Pedantic = Args.hasArg(OPT_pedantic);
1431 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
1432 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
1433 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor);
1434 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1435 OPT_fno_show_column,
1437 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1438 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1439 Opts.AbsolutePath = Args.hasArg(OPT_fdiagnostics_absolute_paths);
1440 Opts.ShowOptionNames =
1441 Args.hasFlag(OPT_fdiagnostics_show_option,
1442 OPT_fno_diagnostics_show_option, DefaultShowOpt);
1444 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
1446 // Default behavior is to not to show note include stacks.
1447 Opts.ShowNoteIncludeStack = false;
1448 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1449 OPT_fno_diagnostics_show_note_include_stack))
1450 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1451 Opts.ShowNoteIncludeStack = true;
1453 StringRef ShowOverloads =
1454 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1455 if (ShowOverloads == "best")
1456 Opts.setShowOverloads(Ovl_Best);
1457 else if (ShowOverloads == "all")
1458 Opts.setShowOverloads(Ovl_All);
1462 Diags->Report(diag::err_drv_invalid_value)
1463 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1467 StringRef ShowCategory =
1468 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1469 if (ShowCategory == "none")
1470 Opts.ShowCategories = 0;
1471 else if (ShowCategory == "id")
1472 Opts.ShowCategories = 1;
1473 else if (ShowCategory == "name")
1474 Opts.ShowCategories = 2;
1478 Diags->Report(diag::err_drv_invalid_value)
1479 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1484 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1485 if (Format == "clang")
1486 Opts.setFormat(DiagnosticOptions::Clang);
1487 else if (Format == "msvc")
1488 Opts.setFormat(DiagnosticOptions::MSVC);
1489 else if (Format == "msvc-fallback") {
1490 Opts.setFormat(DiagnosticOptions::MSVC);
1491 Opts.CLFallbackMode = true;
1492 } else if (Format == "vi")
1493 Opts.setFormat(DiagnosticOptions::Vi);
1497 Diags->Report(diag::err_drv_invalid_value)
1498 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1502 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1503 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1504 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
1505 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ);
1506 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ);
1507 if (Args.hasArg(OPT_verify))
1508 Opts.VerifyPrefixes.push_back("expected");
1509 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and
1510 // then sort it to prepare for fast lookup using std::binary_search.
1511 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, Diags)) {
1512 Opts.VerifyDiagnostics = false;
1516 llvm::sort(Opts.VerifyPrefixes);
1517 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None;
1518 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=",
1519 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ),
1521 if (Args.hasArg(OPT_verify_ignore_unexpected))
1522 DiagMask = DiagnosticLevelMask::All;
1523 Opts.setVerifyIgnoreUnexpected(DiagMask);
1524 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
1525 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
1526 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
1527 Opts.MacroBacktraceLimit =
1528 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
1529 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1530 Opts.TemplateBacktraceLimit = getLastArgIntValue(
1531 Args, OPT_ftemplate_backtrace_limit,
1532 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
1533 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
1534 Args, OPT_fconstexpr_backtrace_limit,
1535 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
1536 Opts.SpellCheckingLimit = getLastArgIntValue(
1537 Args, OPT_fspell_checking_limit,
1538 DiagnosticOptions::DefaultSpellCheckingLimit, Diags);
1539 Opts.SnippetLineLimit = getLastArgIntValue(
1540 Args, OPT_fcaret_diagnostics_max_lines,
1541 DiagnosticOptions::DefaultSnippetLineLimit, Diags);
1542 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
1543 DiagnosticOptions::DefaultTabStop, Diags);
1544 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1545 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1547 Diags->Report(diag::warn_ignoring_ftabstop_value)
1548 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1550 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
1551 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
1552 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
1557 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1558 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1561 /// Parse the argument to the -ftest-module-file-extension
1562 /// command-line argument.
1564 /// \returns true on error, false on success.
1565 static bool parseTestModuleFileExtensionArg(StringRef Arg,
1566 std::string &BlockName,
1567 unsigned &MajorVersion,
1568 unsigned &MinorVersion,
1570 std::string &UserInfo) {
1571 SmallVector<StringRef, 5> Args;
1572 Arg.split(Args, ':', 5);
1573 if (Args.size() < 5)
1576 BlockName = Args[0];
1577 if (Args[1].getAsInteger(10, MajorVersion)) return true;
1578 if (Args[2].getAsInteger(10, MinorVersion)) return true;
1579 if (Args[3].getAsInteger(2, Hashed)) return true;
1580 if (Args.size() > 4)
1585 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1586 DiagnosticsEngine &Diags,
1587 bool &IsHeaderFile) {
1588 Opts.ProgramAction = frontend::ParseSyntaxOnly;
1589 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1590 switch (A->getOption().getID()) {
1592 llvm_unreachable("Invalid option in group!");
1594 Opts.ProgramAction = frontend::ASTDeclList; break;
1596 case OPT_ast_dump_all:
1597 case OPT_ast_dump_lookups:
1598 Opts.ProgramAction = frontend::ASTDump; break;
1600 Opts.ProgramAction = frontend::ASTPrint; break;
1602 Opts.ProgramAction = frontend::ASTView; break;
1603 case OPT_compiler_options_dump:
1604 Opts.ProgramAction = frontend::DumpCompilerOptions; break;
1605 case OPT_dump_raw_tokens:
1606 Opts.ProgramAction = frontend::DumpRawTokens; break;
1607 case OPT_dump_tokens:
1608 Opts.ProgramAction = frontend::DumpTokens; break;
1610 Opts.ProgramAction = frontend::EmitAssembly; break;
1611 case OPT_emit_llvm_bc:
1612 Opts.ProgramAction = frontend::EmitBC; break;
1614 Opts.ProgramAction = frontend::EmitHTML; break;
1616 Opts.ProgramAction = frontend::EmitLLVM; break;
1617 case OPT_emit_llvm_only:
1618 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1619 case OPT_emit_codegen_only:
1620 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1622 Opts.ProgramAction = frontend::EmitObj; break;
1624 Opts.FixItSuffix = A->getValue();
1627 Opts.ProgramAction = frontend::FixIt; break;
1628 case OPT_emit_module:
1629 Opts.ProgramAction = frontend::GenerateModule; break;
1630 case OPT_emit_module_interface:
1631 Opts.ProgramAction = frontend::GenerateModuleInterface; break;
1632 case OPT_emit_header_module:
1633 Opts.ProgramAction = frontend::GenerateHeaderModule; break;
1635 Opts.ProgramAction = frontend::GeneratePCH; break;
1637 Opts.ProgramAction = frontend::InitOnly; break;
1638 case OPT_fsyntax_only:
1639 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1640 case OPT_module_file_info:
1641 Opts.ProgramAction = frontend::ModuleFileInfo; break;
1642 case OPT_verify_pch:
1643 Opts.ProgramAction = frontend::VerifyPCH; break;
1644 case OPT_print_preamble:
1645 Opts.ProgramAction = frontend::PrintPreamble; break;
1647 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1648 case OPT_templight_dump:
1649 Opts.ProgramAction = frontend::TemplightDump; break;
1650 case OPT_rewrite_macros:
1651 Opts.ProgramAction = frontend::RewriteMacros; break;
1652 case OPT_rewrite_objc:
1653 Opts.ProgramAction = frontend::RewriteObjC; break;
1654 case OPT_rewrite_test:
1655 Opts.ProgramAction = frontend::RewriteTest; break;
1657 Opts.ProgramAction = frontend::RunAnalysis; break;
1659 Opts.ProgramAction = frontend::MigrateSource; break;
1661 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1665 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1666 Opts.Plugins.emplace_back(A->getValue(0));
1667 Opts.ProgramAction = frontend::PluginAction;
1668 Opts.ActionName = A->getValue();
1670 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1671 for (const auto *AA : Args.filtered(OPT_plugin_arg))
1672 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1));
1674 for (const std::string &Arg :
1675 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) {
1676 std::string BlockName;
1677 unsigned MajorVersion;
1678 unsigned MinorVersion;
1680 std::string UserInfo;
1681 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion,
1682 MinorVersion, Hashed, UserInfo)) {
1683 Diags.Report(diag::err_test_module_file_extension_format) << Arg;
1688 // Add the testing module file extension.
1689 Opts.ModuleFileExtensions.push_back(
1690 std::make_shared<TestModuleFileExtension>(
1691 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo));
1694 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1695 Opts.CodeCompletionAt =
1696 ParsedSourceLocation::FromString(A->getValue());
1697 if (Opts.CodeCompletionAt.FileName.empty())
1698 Diags.Report(diag::err_drv_invalid_value)
1699 << A->getAsString(Args) << A->getValue();
1701 Opts.DisableFree = Args.hasArg(OPT_disable_free);
1703 Opts.OutputFile = Args.getLastArgValue(OPT_o);
1704 Opts.Plugins = Args.getAllArgValues(OPT_load);
1705 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1706 Opts.ShowHelp = Args.hasArg(OPT_help);
1707 Opts.ShowStats = Args.hasArg(OPT_print_stats);
1708 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1709 Opts.ShowVersion = Args.hasArg(OPT_version);
1710 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1711 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1712 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1713 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
1714 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
1715 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
1716 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
1717 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all);
1718 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
1719 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
1720 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
1721 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
1722 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
1723 // Only the -fmodule-file=<file> form.
1724 for (const auto *A : Args.filtered(OPT_fmodule_file)) {
1725 StringRef Val = A->getValue();
1726 if (Val.find('=') == StringRef::npos)
1727 Opts.ModuleFiles.push_back(Val);
1729 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ);
1730 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files);
1731 Opts.IncludeTimestamps = !Args.hasArg(OPT_fno_pch_timestamp);
1733 Opts.CodeCompleteOpts.IncludeMacros
1734 = Args.hasArg(OPT_code_completion_macros);
1735 Opts.CodeCompleteOpts.IncludeCodePatterns
1736 = Args.hasArg(OPT_code_completion_patterns);
1737 Opts.CodeCompleteOpts.IncludeGlobals
1738 = !Args.hasArg(OPT_no_code_completion_globals);
1739 Opts.CodeCompleteOpts.IncludeNamespaceLevelDecls
1740 = !Args.hasArg(OPT_no_code_completion_ns_level_decls);
1741 Opts.CodeCompleteOpts.IncludeBriefComments
1742 = Args.hasArg(OPT_code_completion_brief_comments);
1743 Opts.CodeCompleteOpts.IncludeFixIts
1744 = Args.hasArg(OPT_code_completion_with_fixits);
1746 Opts.OverrideRecordLayoutsFile
1747 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
1748 Opts.AuxTriple = Args.getLastArgValue(OPT_aux_triple);
1749 Opts.StatsFile = Args.getLastArgValue(OPT_stats_file);
1751 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1753 OPT_arcmt_migrate)) {
1754 switch (A->getOption().getID()) {
1756 llvm_unreachable("missed a case");
1757 case OPT_arcmt_check:
1758 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1760 case OPT_arcmt_modify:
1761 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1763 case OPT_arcmt_migrate:
1764 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1768 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
1769 Opts.ARCMTMigrateReportOut
1770 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1771 Opts.ARCMTMigrateEmitARCErrors
1772 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1774 if (Args.hasArg(OPT_objcmt_migrate_literals))
1775 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
1776 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
1777 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
1778 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
1779 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
1780 if (Args.hasArg(OPT_objcmt_migrate_property))
1781 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
1782 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
1783 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
1784 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
1785 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
1786 if (Args.hasArg(OPT_objcmt_migrate_annotation))
1787 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
1788 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
1789 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
1790 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
1791 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
1792 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
1793 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
1794 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
1795 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
1796 if (Args.hasArg(OPT_objcmt_atomic_property))
1797 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
1798 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
1799 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
1800 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
1801 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
1802 if (Args.hasArg(OPT_objcmt_migrate_all))
1803 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
1805 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
1807 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
1808 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
1809 Diags.Report(diag::err_drv_argument_not_allowed_with)
1810 << "ARC migration" << "ObjC migration";
1813 InputKind DashX(InputKind::Unknown);
1814 if (const Arg *A = Args.getLastArg(OPT_x)) {
1815 StringRef XValue = A->getValue();
1817 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'.
1818 // FIXME: Supporting '<lang>-header-cpp-output' would be useful.
1819 bool Preprocessed = XValue.consume_back("-cpp-output");
1820 bool ModuleMap = XValue.consume_back("-module-map");
1822 !Preprocessed && !ModuleMap && XValue.consume_back("-header");
1824 // Principal languages.
1825 DashX = llvm::StringSwitch<InputKind>(XValue)
1826 .Case("c", InputKind::C)
1827 .Case("cl", InputKind::OpenCL)
1828 .Case("cuda", InputKind::CUDA)
1829 .Case("hip", InputKind::HIP)
1830 .Case("c++", InputKind::CXX)
1831 .Case("objective-c", InputKind::ObjC)
1832 .Case("objective-c++", InputKind::ObjCXX)
1833 .Case("renderscript", InputKind::RenderScript)
1834 .Default(InputKind::Unknown);
1836 // "objc[++]-cpp-output" is an acceptable synonym for
1837 // "objective-c[++]-cpp-output".
1838 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap)
1839 DashX = llvm::StringSwitch<InputKind>(XValue)
1840 .Case("objc", InputKind::ObjC)
1841 .Case("objc++", InputKind::ObjCXX)
1842 .Default(InputKind::Unknown);
1844 // Some special cases cannot be combined with suffixes.
1845 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile)
1846 DashX = llvm::StringSwitch<InputKind>(XValue)
1847 .Case("cpp-output", InputKind(InputKind::C).getPreprocessed())
1848 .Case("assembler-with-cpp", InputKind::Asm)
1849 .Cases("ast", "pcm",
1850 InputKind(InputKind::Unknown, InputKind::Precompiled))
1851 .Case("ir", InputKind::LLVM_IR)
1852 .Default(InputKind::Unknown);
1854 if (DashX.isUnknown())
1855 Diags.Report(diag::err_drv_invalid_value)
1856 << A->getAsString(Args) << A->getValue();
1859 DashX = DashX.getPreprocessed();
1861 DashX = DashX.withFormat(InputKind::ModuleMap);
1864 // '-' is the default input if none is given.
1865 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1866 Opts.Inputs.clear();
1868 Inputs.push_back("-");
1869 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1870 InputKind IK = DashX;
1871 if (IK.isUnknown()) {
1872 IK = FrontendOptions::getInputKindForExtension(
1873 StringRef(Inputs[i]).rsplit('.').second);
1874 // FIXME: Warn on this?
1877 // FIXME: Remove this hack.
1882 // The -emit-module action implicitly takes a module map.
1883 if (Opts.ProgramAction == frontend::GenerateModule &&
1884 IK.getFormat() == InputKind::Source)
1885 IK = IK.withFormat(InputKind::ModuleMap);
1887 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK);
1893 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1895 std::string ClangExecutable =
1896 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1897 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
1899 // Compute the path to the resource directory.
1900 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
1901 SmallString<128> P(Dir);
1902 if (ClangResourceDir != "")
1903 llvm::sys::path::append(P, ClangResourceDir);
1905 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX,
1906 "clang", CLANG_VERSION_STRING);
1911 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args,
1912 const std::string &WorkingDir) {
1913 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1914 Opts.Verbose = Args.hasArg(OPT_v);
1915 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1916 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1917 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1918 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1919 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1920 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1922 // Canonicalize -fmodules-cache-path before storing it.
1923 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path));
1924 if (!(P.empty() || llvm::sys::path::is_absolute(P))) {
1925 if (WorkingDir.empty())
1926 llvm::sys::fs::make_absolute(P);
1928 llvm::sys::fs::make_absolute(WorkingDir, P);
1930 llvm::sys::path::remove_dots(P);
1931 Opts.ModuleCachePath = P.str();
1933 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
1934 // Only the -fmodule-file=<name>=<file> form.
1935 for (const auto *A : Args.filtered(OPT_fmodule_file)) {
1936 StringRef Val = A->getValue();
1937 if (Val.find('=') != StringRef::npos)
1938 Opts.PrebuiltModuleFiles.insert(Val.split('='));
1940 for (const auto *A : Args.filtered(OPT_fprebuilt_module_path))
1941 Opts.AddPrebuiltModulePath(A->getValue());
1942 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1943 Opts.ModulesHashContent = Args.hasArg(OPT_fmodules_hash_content);
1944 Opts.ModulesValidateDiagnosticOptions =
1945 !Args.hasArg(OPT_fmodules_disable_diagnostic_validation);
1946 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps);
1947 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
1948 Opts.ModuleCachePruneInterval =
1949 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
1950 Opts.ModuleCachePruneAfter =
1951 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
1952 Opts.ModulesValidateOncePerBuildSession =
1953 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
1954 Opts.BuildSessionTimestamp =
1955 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
1956 Opts.ModulesValidateSystemHeaders =
1957 Args.hasArg(OPT_fmodules_validate_system_headers);
1958 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ))
1959 Opts.ModuleFormat = A->getValue();
1961 for (const auto *A : Args.filtered(OPT_fmodules_ignore_macro)) {
1962 StringRef MacroDef = A->getValue();
1963 Opts.ModulesIgnoreMacros.insert(
1964 llvm::CachedHashString(MacroDef.split('=').first));
1967 // Add -I..., -F..., and -index-header-map options in order.
1968 bool IsIndexHeaderMap = false;
1969 bool IsSysrootSpecified =
1970 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot);
1971 for (const auto *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) {
1972 if (A->getOption().matches(OPT_index_header_map)) {
1973 // -index-header-map applies to the next -I or -F.
1974 IsIndexHeaderMap = true;
1978 frontend::IncludeDirGroup Group =
1979 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled;
1981 bool IsFramework = A->getOption().matches(OPT_F);
1982 std::string Path = A->getValue();
1984 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') {
1985 SmallString<32> Buffer;
1986 llvm::sys::path::append(Buffer, Opts.Sysroot,
1987 llvm::StringRef(A->getValue()).substr(1));
1988 Path = Buffer.str();
1991 Opts.AddPath(Path, Group, IsFramework,
1992 /*IgnoreSysroot*/ true);
1993 IsIndexHeaderMap = false;
1996 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1997 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1998 for (const auto *A :
1999 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) {
2000 if (A->getOption().matches(OPT_iprefix))
2001 Prefix = A->getValue();
2002 else if (A->getOption().matches(OPT_iwithprefix))
2003 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true);
2005 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true);
2008 for (const auto *A : Args.filtered(OPT_idirafter))
2009 Opts.AddPath(A->getValue(), frontend::After, false, true);
2010 for (const auto *A : Args.filtered(OPT_iquote))
2011 Opts.AddPath(A->getValue(), frontend::Quoted, false, true);
2012 for (const auto *A : Args.filtered(OPT_isystem, OPT_iwithsysroot))
2013 Opts.AddPath(A->getValue(), frontend::System, false,
2014 !A->getOption().matches(OPT_iwithsysroot));
2015 for (const auto *A : Args.filtered(OPT_iframework))
2016 Opts.AddPath(A->getValue(), frontend::System, true, true);
2017 for (const auto *A : Args.filtered(OPT_iframeworkwithsysroot))
2018 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true,
2019 /*IgnoreSysRoot=*/false);
2021 // Add the paths for the various language specific isystem flags.
2022 for (const auto *A : Args.filtered(OPT_c_isystem))
2023 Opts.AddPath(A->getValue(), frontend::CSystem, false, true);
2024 for (const auto *A : Args.filtered(OPT_cxx_isystem))
2025 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true);
2026 for (const auto *A : Args.filtered(OPT_objc_isystem))
2027 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true);
2028 for (const auto *A : Args.filtered(OPT_objcxx_isystem))
2029 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true);
2031 // Add the internal paths from a driver that detects standard include paths.
2032 for (const auto *A :
2033 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) {
2034 frontend::IncludeDirGroup Group = frontend::System;
2035 if (A->getOption().matches(OPT_internal_externc_isystem))
2036 Group = frontend::ExternCSystem;
2037 Opts.AddPath(A->getValue(), Group, false, true);
2040 // Add the path prefixes which are implicitly treated as being system headers.
2041 for (const auto *A :
2042 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix))
2043 Opts.AddSystemHeaderPrefix(
2044 A->getValue(), A->getOption().matches(OPT_system_header_prefix));
2046 for (const auto *A : Args.filtered(OPT_ivfsoverlay))
2047 Opts.AddVFSOverlayFile(A->getValue());
2050 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
2051 const llvm::Triple &T,
2052 PreprocessorOptions &PPOpts,
2053 LangStandard::Kind LangStd) {
2054 // Set some properties which depend solely on the input kind; it would be nice
2055 // to move these to the language standard, and have the driver resolve the
2056 // input kind + language standard.
2058 // FIXME: Perhaps a better model would be for a single source file to have
2059 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std)
2060 // simultaneously active?
2061 if (IK.getLanguage() == InputKind::Asm) {
2062 Opts.AsmPreprocessor = 1;
2063 } else if (IK.isObjectiveC()) {
2067 if (LangStd == LangStandard::lang_unspecified) {
2068 // Based on the base language, pick one.
2069 switch (IK.getLanguage()) {
2070 case InputKind::Unknown:
2071 case InputKind::LLVM_IR:
2072 llvm_unreachable("Invalid input kind!");
2073 case InputKind::OpenCL:
2074 LangStd = LangStandard::lang_opencl10;
2076 case InputKind::CUDA:
2077 LangStd = LangStandard::lang_cuda;
2079 case InputKind::Asm:
2081 #if defined(CLANG_DEFAULT_STD_C)
2082 LangStd = CLANG_DEFAULT_STD_C;
2084 // The PS4 uses C99 as the default C standard.
2086 LangStd = LangStandard::lang_gnu99;
2088 LangStd = LangStandard::lang_gnu11;
2091 case InputKind::ObjC:
2092 #if defined(CLANG_DEFAULT_STD_C)
2093 LangStd = CLANG_DEFAULT_STD_C;
2095 LangStd = LangStandard::lang_gnu11;
2098 case InputKind::CXX:
2099 case InputKind::ObjCXX:
2100 #if defined(CLANG_DEFAULT_STD_CXX)
2101 LangStd = CLANG_DEFAULT_STD_CXX;
2103 LangStd = LangStandard::lang_gnucxx14;
2106 case InputKind::RenderScript:
2107 LangStd = LangStandard::lang_c99;
2109 case InputKind::HIP:
2110 LangStd = LangStandard::lang_hip;
2115 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
2116 Opts.LineComment = Std.hasLineComments();
2117 Opts.C99 = Std.isC99();
2118 Opts.C11 = Std.isC11();
2119 Opts.C17 = Std.isC17();
2120 Opts.CPlusPlus = Std.isCPlusPlus();
2121 Opts.CPlusPlus11 = Std.isCPlusPlus11();
2122 Opts.CPlusPlus14 = Std.isCPlusPlus14();
2123 Opts.CPlusPlus17 = Std.isCPlusPlus17();
2124 Opts.CPlusPlus2a = Std.isCPlusPlus2a();
2125 Opts.Digraphs = Std.hasDigraphs();
2126 Opts.GNUMode = Std.isGNUMode();
2127 Opts.GNUInline = !Opts.C99 && !Opts.CPlusPlus;
2128 Opts.HexFloats = Std.hasHexFloats();
2129 Opts.ImplicitInt = Std.hasImplicitInt();
2131 // Set OpenCL Version.
2132 Opts.OpenCL = Std.isOpenCL();
2133 if (LangStd == LangStandard::lang_opencl10)
2134 Opts.OpenCLVersion = 100;
2135 else if (LangStd == LangStandard::lang_opencl11)
2136 Opts.OpenCLVersion = 110;
2137 else if (LangStd == LangStandard::lang_opencl12)
2138 Opts.OpenCLVersion = 120;
2139 else if (LangStd == LangStandard::lang_opencl20)
2140 Opts.OpenCLVersion = 200;
2141 else if (LangStd == LangStandard::lang_openclcpp)
2142 Opts.OpenCLCPlusPlusVersion = 100;
2144 // OpenCL has some additional defaults.
2148 Opts.LaxVectorConversions = 0;
2149 Opts.setDefaultFPContractMode(LangOptions::FPC_On);
2150 Opts.NativeHalfType = 1;
2151 Opts.NativeHalfArgsAndReturns = 1;
2152 Opts.OpenCLCPlusPlus = Opts.CPlusPlus;
2153 // Include default header file for OpenCL.
2154 if (Opts.IncludeDefaultHeader) {
2155 PPOpts.Includes.push_back("opencl-c.h");
2159 Opts.HIP = IK.getLanguage() == InputKind::HIP;
2160 Opts.CUDA = IK.getLanguage() == InputKind::CUDA || Opts.HIP;
2162 // Set default FP_CONTRACT to FAST.
2163 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast);
2165 Opts.RenderScript = IK.getLanguage() == InputKind::RenderScript;
2166 if (Opts.RenderScript) {
2167 Opts.NativeHalfType = 1;
2168 Opts.NativeHalfArgsAndReturns = 1;
2171 // OpenCL and C++ both have bool, true, false keywords.
2172 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
2174 // OpenCL has half keyword
2175 Opts.Half = Opts.OpenCL;
2177 // C++ has wchar_t keyword.
2178 Opts.WChar = Opts.CPlusPlus;
2180 Opts.GNUKeywords = Opts.GNUMode;
2181 Opts.CXXOperatorNames = Opts.CPlusPlus;
2183 Opts.AlignedAllocation = Opts.CPlusPlus17;
2185 Opts.DollarIdents = !Opts.AsmPreprocessor;
2188 /// Attempt to parse a visibility value out of the given argument.
2189 static Visibility parseVisibility(Arg *arg, ArgList &args,
2190 DiagnosticsEngine &diags) {
2191 StringRef value = arg->getValue();
2192 if (value == "default") {
2193 return DefaultVisibility;
2194 } else if (value == "hidden" || value == "internal") {
2195 return HiddenVisibility;
2196 } else if (value == "protected") {
2197 // FIXME: diagnose if target does not support protected visibility
2198 return ProtectedVisibility;
2201 diags.Report(diag::err_drv_invalid_value)
2202 << arg->getAsString(args) << value;
2203 return DefaultVisibility;
2206 /// Check if input file kind and language standard are compatible.
2207 static bool IsInputCompatibleWithStandard(InputKind IK,
2208 const LangStandard &S) {
2209 switch (IK.getLanguage()) {
2210 case InputKind::Unknown:
2211 case InputKind::LLVM_IR:
2212 llvm_unreachable("should not parse language flags for this input");
2215 case InputKind::ObjC:
2216 case InputKind::RenderScript:
2217 return S.getLanguage() == InputKind::C;
2219 case InputKind::OpenCL:
2220 return S.getLanguage() == InputKind::OpenCL;
2222 case InputKind::CXX:
2223 case InputKind::ObjCXX:
2224 return S.getLanguage() == InputKind::CXX;
2226 case InputKind::CUDA:
2227 // FIXME: What -std= values should be permitted for CUDA compilations?
2228 return S.getLanguage() == InputKind::CUDA ||
2229 S.getLanguage() == InputKind::CXX;
2231 case InputKind::HIP:
2232 return S.getLanguage() == InputKind::CXX ||
2233 S.getLanguage() == InputKind::HIP;
2235 case InputKind::Asm:
2236 // Accept (and ignore) all -std= values.
2237 // FIXME: The -std= value is not ignored; it affects the tokenization
2238 // and preprocessing rules if we're preprocessing this asm input.
2242 llvm_unreachable("unexpected input language");
2245 /// Get language name for given input kind.
2246 static const StringRef GetInputKindName(InputKind IK) {
2247 switch (IK.getLanguage()) {
2250 case InputKind::ObjC:
2251 return "Objective-C";
2252 case InputKind::CXX:
2254 case InputKind::ObjCXX:
2255 return "Objective-C++";
2256 case InputKind::OpenCL:
2258 case InputKind::CUDA:
2260 case InputKind::RenderScript:
2261 return "RenderScript";
2262 case InputKind::HIP:
2265 case InputKind::Asm:
2267 case InputKind::LLVM_IR:
2270 case InputKind::Unknown:
2273 llvm_unreachable("unknown input language");
2276 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
2277 const TargetOptions &TargetOpts,
2278 PreprocessorOptions &PPOpts,
2279 DiagnosticsEngine &Diags) {
2280 // FIXME: Cleanup per-file based stuff.
2281 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
2282 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
2283 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
2284 #define LANGSTANDARD(id, name, lang, desc, features) \
2285 .Case(name, LangStandard::lang_##id)
2286 #define LANGSTANDARD_ALIAS(id, alias) \
2287 .Case(alias, LangStandard::lang_##id)
2288 #include "clang/Frontend/LangStandards.def"
2289 .Default(LangStandard::lang_unspecified);
2290 if (LangStd == LangStandard::lang_unspecified) {
2291 Diags.Report(diag::err_drv_invalid_value)
2292 << A->getAsString(Args) << A->getValue();
2293 // Report supported standards with short description.
2294 for (unsigned KindValue = 0;
2295 KindValue != LangStandard::lang_unspecified;
2297 const LangStandard &Std = LangStandard::getLangStandardForKind(
2298 static_cast<LangStandard::Kind>(KindValue));
2299 if (IsInputCompatibleWithStandard(IK, Std)) {
2300 auto Diag = Diags.Report(diag::note_drv_use_standard);
2301 Diag << Std.getName() << Std.getDescription();
2302 unsigned NumAliases = 0;
2303 #define LANGSTANDARD(id, name, lang, desc, features)
2304 #define LANGSTANDARD_ALIAS(id, alias) \
2305 if (KindValue == LangStandard::lang_##id) ++NumAliases;
2306 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
2307 #include "clang/Frontend/LangStandards.def"
2309 #define LANGSTANDARD(id, name, lang, desc, features)
2310 #define LANGSTANDARD_ALIAS(id, alias) \
2311 if (KindValue == LangStandard::lang_##id) Diag << alias;
2312 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
2313 #include "clang/Frontend/LangStandards.def"
2317 // Valid standard, check to make sure language and standard are
2319 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
2320 if (!IsInputCompatibleWithStandard(IK, Std)) {
2321 Diags.Report(diag::err_drv_argument_not_allowed_with)
2322 << A->getAsString(Args) << GetInputKindName(IK);
2327 if (Args.hasArg(OPT_fno_dllexport_inlines))
2328 Opts.DllExportInlines = false;
2330 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) {
2331 StringRef Name = A->getValue();
2332 if (Name == "full" || Name == "branch") {
2333 Opts.CFProtectionBranch = 1;
2336 // -cl-std only applies for OpenCL language standards.
2337 // Override the -std option in this case.
2338 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
2339 LangStandard::Kind OpenCLLangStd
2340 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
2341 .Cases("cl", "CL", LangStandard::lang_opencl10)
2342 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11)
2343 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12)
2344 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20)
2345 .Case("c++", LangStandard::lang_openclcpp)
2346 .Default(LangStandard::lang_unspecified);
2348 if (OpenCLLangStd == LangStandard::lang_unspecified) {
2349 Diags.Report(diag::err_drv_invalid_value)
2350 << A->getAsString(Args) << A->getValue();
2353 LangStd = OpenCLLangStd;
2356 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header);
2358 llvm::Triple T(TargetOpts.Triple);
2359 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd);
2361 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0.
2362 // This option should be deprecated for CL > 1.0 because
2363 // this option was added for compatibility with OpenCL 1.0.
2364 if (Args.getLastArg(OPT_cl_strict_aliasing)
2365 && Opts.OpenCLVersion > 100) {
2366 Diags.Report(diag::warn_option_invalid_ocl_version)
2367 << Opts.getOpenCLVersionTuple().getAsString()
2368 << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args);
2371 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
2372 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
2373 // while a subset (the non-C++ GNU keywords) is provided by GCC's
2374 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
2375 // name, as it doesn't seem a useful distinction.
2376 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
2379 Opts.Digraphs = Args.hasFlag(OPT_fdigraphs, OPT_fno_digraphs, Opts.Digraphs);
2381 if (Args.hasArg(OPT_fno_operator_names))
2382 Opts.CXXOperatorNames = 0;
2384 if (Args.hasArg(OPT_fcuda_is_device))
2385 Opts.CUDAIsDevice = 1;
2387 if (Args.hasArg(OPT_fcuda_allow_variadic_functions))
2388 Opts.CUDAAllowVariadicFunctions = 1;
2390 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr))
2391 Opts.CUDAHostDeviceConstexpr = 0;
2393 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals))
2394 Opts.CUDADeviceApproxTranscendentals = 1;
2396 Opts.GPURelocatableDeviceCode = Args.hasArg(OPT_fgpu_rdc);
2399 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
2400 StringRef value = arg->getValue();
2401 if (Opts.ObjCRuntime.tryParse(value))
2402 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
2405 if (Args.hasArg(OPT_fobjc_gc_only))
2406 Opts.setGC(LangOptions::GCOnly);
2407 else if (Args.hasArg(OPT_fobjc_gc))
2408 Opts.setGC(LangOptions::HybridGC);
2409 else if (Args.hasArg(OPT_fobjc_arc)) {
2410 Opts.ObjCAutoRefCount = 1;
2411 if (!Opts.ObjCRuntime.allowsARC())
2412 Diags.Report(diag::err_arc_unsupported_on_runtime);
2415 // ObjCWeakRuntime tracks whether the runtime supports __weak, not
2416 // whether the feature is actually enabled. This is predominantly
2417 // determined by -fobjc-runtime, but we allow it to be overridden
2418 // from the command line for testing purposes.
2419 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
2420 Opts.ObjCWeakRuntime = 1;
2422 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak();
2424 // ObjCWeak determines whether __weak is actually enabled.
2425 // Note that we allow -fno-objc-weak to disable this even in ARC mode.
2426 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) {
2427 if (!weakArg->getOption().matches(OPT_fobjc_weak)) {
2428 assert(!Opts.ObjCWeak);
2429 } else if (Opts.getGC() != LangOptions::NonGC) {
2430 Diags.Report(diag::err_objc_weak_with_gc);
2431 } else if (!Opts.ObjCWeakRuntime) {
2432 Diags.Report(diag::err_objc_weak_unsupported);
2436 } else if (Opts.ObjCAutoRefCount) {
2437 Opts.ObjCWeak = Opts.ObjCWeakRuntime;
2440 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
2441 Opts.ObjCInferRelatedResultType = 0;
2443 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
2444 Opts.ObjCSubscriptingLegacyRuntime =
2445 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
2448 if (Args.hasArg(OPT_fgnu89_inline)) {
2450 Diags.Report(diag::err_drv_argument_not_allowed_with)
2451 << "-fgnu89-inline" << GetInputKindName(IK);
2456 if (Args.hasArg(OPT_fapple_kext)) {
2457 if (!Opts.CPlusPlus)
2458 Diags.Report(diag::warn_c_kext);
2463 if (Args.hasArg(OPT_print_ivar_layout))
2464 Opts.ObjCGCBitmapPrint = 1;
2466 if (Args.hasArg(OPT_fno_constant_cfstrings))
2467 Opts.NoConstantCFStrings = 1;
2468 if (const auto *A = Args.getLastArg(OPT_fcf_runtime_abi_EQ))
2470 llvm::StringSwitch<LangOptions::CoreFoundationABI>(A->getValue())
2471 .Cases("unspecified", "standalone", "objc",
2472 LangOptions::CoreFoundationABI::ObjectiveC)
2473 .Cases("swift", "swift-5.0",
2474 LangOptions::CoreFoundationABI::Swift5_0)
2475 .Case("swift-4.2", LangOptions::CoreFoundationABI::Swift4_2)
2476 .Case("swift-4.1", LangOptions::CoreFoundationABI::Swift4_1)
2477 .Default(LangOptions::CoreFoundationABI::ObjectiveC);
2479 if (Args.hasArg(OPT_fzvector))
2482 if (Args.hasArg(OPT_pthread))
2483 Opts.POSIXThreads = 1;
2485 // The value-visibility mode defaults to "default".
2486 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
2487 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
2489 Opts.setValueVisibilityMode(DefaultVisibility);
2492 // The type-visibility mode defaults to the value-visibility mode.
2493 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
2494 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
2496 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
2499 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
2500 Opts.InlineVisibilityHidden = 1;
2502 if (Args.hasArg(OPT_fvisibility_global_new_delete_hidden))
2503 Opts.GlobalAllocationFunctionVisibilityHidden = 1;
2505 if (Args.hasArg(OPT_ftrapv)) {
2506 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
2507 // Set the handler, if one is specified.
2508 Opts.OverflowHandler =
2509 Args.getLastArgValue(OPT_ftrapv_handler);
2511 else if (Args.hasArg(OPT_fwrapv))
2512 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
2514 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
2515 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
2516 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
2517 Opts.MSCompatibilityVersion = 0;
2518 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) {
2520 if (VT.tryParse(A->getValue()))
2521 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
2523 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 +
2524 VT.getMinor().getValueOr(0) * 100000 +
2525 VT.getSubminor().getValueOr(0);
2528 // Mimicking gcc's behavior, trigraphs are only enabled if -trigraphs
2529 // is specified, or -std is set to a conforming mode.
2530 // Trigraphs are disabled by default in c++1z onwards.
2531 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17;
2533 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
2535 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
2536 OPT_fno_dollars_in_identifiers,
2538 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
2539 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
2540 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
2541 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
2542 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
2544 if (Args.hasArg(OPT_fno_lax_vector_conversions))
2545 Opts.LaxVectorConversions = 0;
2546 if (Args.hasArg(OPT_fno_threadsafe_statics))
2547 Opts.ThreadsafeStatics = 0;
2548 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
2549 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
2550 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
2554 Args.hasFlag(OPT_ffixed_point, OPT_fno_fixed_point, /*Default=*/false) &&
2556 Opts.PaddingOnUnsignedFixedPoint =
2557 Args.hasFlag(OPT_fpadding_on_unsigned_fixed_point,
2558 OPT_fno_padding_on_unsigned_fixed_point,
2559 /*Default=*/false) &&
2562 // Handle exception personalities
2563 Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions,
2564 options::OPT_fseh_exceptions,
2565 options::OPT_fdwarf_exceptions);
2567 const Option &Opt = A->getOption();
2568 llvm::Triple T(TargetOpts.Triple);
2569 if (T.isWindowsMSVCEnvironment())
2570 Diags.Report(diag::err_fe_invalid_exception_model)
2571 << Opt.getName() << T.str();
2573 Opts.SjLjExceptions = Opt.matches(options::OPT_fsjlj_exceptions);
2574 Opts.SEHExceptions = Opt.matches(options::OPT_fseh_exceptions);
2575 Opts.DWARFExceptions = Opt.matches(options::OPT_fdwarf_exceptions);
2578 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind);
2579 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
2581 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti);
2582 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
2583 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL
2584 && Opts.OpenCLVersion == 200);
2585 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
2586 Opts.CoroutinesTS = Args.hasArg(OPT_fcoroutines_ts);
2588 // Enable [[]] attributes in C++11 by default.
2589 Opts.DoubleSquareBracketAttributes =
2590 Args.hasFlag(OPT_fdouble_square_bracket_attributes,
2591 OPT_fno_double_square_bracket_attributes, Opts.CPlusPlus11);
2593 Opts.ModulesTS = Args.hasArg(OPT_fmodules_ts);
2594 Opts.Modules = Args.hasArg(OPT_fmodules) || Opts.ModulesTS;
2595 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
2596 Opts.ModulesDeclUse =
2597 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
2598 Opts.ModulesLocalVisibility =
2599 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS;
2600 Opts.ModulesCodegen = Args.hasArg(OPT_fmodules_codegen);
2601 Opts.ModulesDebugInfo = Args.hasArg(OPT_fmodules_debuginfo);
2602 Opts.ModulesSearchAll = Opts.Modules &&
2603 !Args.hasArg(OPT_fno_modules_search_all) &&
2604 Args.hasArg(OPT_fmodules_search_all);
2605 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
2606 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules);
2607 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
2608 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
2609 Opts.Char8 = Args.hasFlag(OPT_fchar8__t, OPT_fno_char8__t, Opts.CPlusPlus2a);
2610 if (const Arg *A = Args.getLastArg(OPT_fwchar_type_EQ)) {
2611 Opts.WCharSize = llvm::StringSwitch<unsigned>(A->getValue())
2616 if (Opts.WCharSize == 0)
2617 Diags.Report(diag::err_fe_invalid_wchar_type) << A->getValue();
2619 Opts.WCharIsSigned = Args.hasFlag(OPT_fsigned_wchar, OPT_fno_signed_wchar, true);
2620 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
2621 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
2622 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
2623 if (!Opts.NoBuiltin)
2624 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
2625 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
2626 Opts.RelaxedTemplateTemplateArgs =
2627 Args.hasArg(OPT_frelaxed_template_template_args);
2628 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation);
2629 Opts.AlignedAllocation =
2630 Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation,
2631 Opts.AlignedAllocation);
2632 Opts.AlignedAllocationUnavailable =
2633 Opts.AlignedAllocation && Args.hasArg(OPT_aligned_alloc_unavailable);
2634 Opts.NewAlignOverride =
2635 getLastArgIntValue(Args, OPT_fnew_alignment_EQ, 0, Diags);
2636 if (Opts.NewAlignOverride && !llvm::isPowerOf2_32(Opts.NewAlignOverride)) {
2637 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ);
2638 Diags.Report(diag::err_fe_invalid_alignment) << A->getAsString(Args)
2640 Opts.NewAlignOverride = 0;
2642 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts);
2643 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
2644 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
2645 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
2646 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
2647 Opts.InstantiationDepth =
2648 getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags);
2650 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
2651 Opts.ConstexprCallDepth =
2652 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
2653 Opts.ConstexprStepLimit =
2654 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
2655 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
2656 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
2657 Opts.NumLargeByValueCopy =
2658 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
2659 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
2660 Opts.ObjCConstantStringClass =
2661 Args.getLastArgValue(OPT_fconstant_string_class);
2662 Opts.ObjCDefaultSynthProperties =
2663 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
2664 Opts.EncodeExtendedBlockSig =
2665 Args.hasArg(OPT_fencode_extended_block_signature);
2666 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
2667 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
2668 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
2669 Opts.AlignDouble = Args.hasArg(OPT_malign_double);
2670 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2671 Opts.PIE = Args.hasArg(OPT_pic_is_pie);
2672 Opts.Static = Args.hasArg(OPT_static_define);
2673 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
2674 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
2675 || Args.hasArg(OPT_fdump_record_layouts);
2676 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
2677 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
2678 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
2679 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
2680 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
2681 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
2682 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
2683 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
2684 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
2685 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
2686 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
2687 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
2688 Opts.ModuleName = Args.getLastArgValue(OPT_fmodule_name_EQ);
2689 Opts.CurrentModule = Opts.ModuleName;
2690 Opts.AppExt = Args.hasArg(OPT_fapplication_extension);
2691 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature);
2692 llvm::sort(Opts.ModuleFeatures);
2693 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type);
2694 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns);
2695 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns
2697 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns)
2698 | Opts.NativeHalfArgsAndReturns;
2699 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm);
2701 // __declspec is enabled by default for the PS4 by the driver, and also
2702 // enabled for Microsoft Extensions or Borland Extensions, here.
2704 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a
2705 // CUDA extension. However, it is required for supporting
2706 // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has
2707 // been rewritten in terms of something more generic, remove the Opts.CUDA
2709 Opts.DeclSpecKeyword =
2710 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec,
2711 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA));
2713 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
2714 switch (llvm::StringSwitch<unsigned>(A->getValue())
2715 .Case("target", LangOptions::ASMM_Target)
2716 .Case("no", LangOptions::ASMM_Off)
2717 .Case("yes", LangOptions::ASMM_On)
2720 Diags.Report(diag::err_drv_invalid_value)
2721 << "-faddress-space-map-mangling=" << A->getValue();
2723 case LangOptions::ASMM_Target:
2724 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
2726 case LangOptions::ASMM_On:
2727 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
2729 case LangOptions::ASMM_Off:
2730 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
2735 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
2736 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
2737 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
2740 LangOptions::PPTMK_FullGeneralitySingleInheritance)
2742 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
2744 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
2745 .Default(LangOptions::PPTMK_BestCase);
2746 if (InheritanceModel == LangOptions::PPTMK_BestCase)
2747 Diags.Report(diag::err_drv_invalid_value)
2748 << "-fms-memptr-rep=" << A->getValue();
2750 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
2753 // Check for MS default calling conventions being specified.
2754 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) {
2755 LangOptions::DefaultCallingConvention DefaultCC =
2756 llvm::StringSwitch<LangOptions::DefaultCallingConvention>(A->getValue())
2757 .Case("cdecl", LangOptions::DCC_CDecl)
2758 .Case("fastcall", LangOptions::DCC_FastCall)
2759 .Case("stdcall", LangOptions::DCC_StdCall)
2760 .Case("vectorcall", LangOptions::DCC_VectorCall)
2761 .Case("regcall", LangOptions::DCC_RegCall)
2762 .Default(LangOptions::DCC_None);
2763 if (DefaultCC == LangOptions::DCC_None)
2764 Diags.Report(diag::err_drv_invalid_value)
2765 << "-fdefault-calling-conv=" << A->getValue();
2767 llvm::Triple T(TargetOpts.Triple);
2768 llvm::Triple::ArchType Arch = T.getArch();
2769 bool emitError = (DefaultCC == LangOptions::DCC_FastCall ||
2770 DefaultCC == LangOptions::DCC_StdCall) &&
2771 Arch != llvm::Triple::x86;
2772 emitError |= (DefaultCC == LangOptions::DCC_VectorCall ||
2773 DefaultCC == LangOptions::DCC_RegCall) &&
2774 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64);
2776 Diags.Report(diag::err_drv_argument_not_allowed_with)
2777 << A->getSpelling() << T.getTriple();
2779 Opts.setDefaultCallingConv(DefaultCC);
2783 if (Arg *A = Args.getLastArg(OPT_mrtd)) {
2784 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None)
2785 Diags.Report(diag::err_drv_argument_not_allowed_with)
2786 << A->getSpelling() << "-fdefault-calling-conv";
2788 llvm::Triple T(TargetOpts.Triple);
2789 if (T.getArch() != llvm::Triple::x86)
2790 Diags.Report(diag::err_drv_argument_not_allowed_with)
2791 << A->getSpelling() << T.getTriple();
2793 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall);
2797 // Check if -fopenmp is specified.
2798 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0;
2799 // Check if -fopenmp-simd is specified.
2800 bool IsSimdSpecified =
2801 Args.hasFlag(options::OPT_fopenmp_simd, options::OPT_fno_openmp_simd,
2803 Opts.OpenMPSimd = !Opts.OpenMP && IsSimdSpecified;
2805 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls);
2806 Opts.OpenMPIsDevice =
2807 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device);
2808 bool IsTargetSpecified =
2809 Opts.OpenMPIsDevice || Args.hasArg(options::OPT_fopenmp_targets_EQ);
2811 if (Opts.OpenMP || Opts.OpenMPSimd) {
2812 if (int Version = getLastArgIntValue(
2813 Args, OPT_fopenmp_version_EQ,
2814 (IsSimdSpecified || IsTargetSpecified) ? 45 : Opts.OpenMP, Diags))
2815 Opts.OpenMP = Version;
2816 else if (IsSimdSpecified || IsTargetSpecified)
2818 // Provide diagnostic when a given target is not expected to be an OpenMP
2820 if (!Opts.OpenMPIsDevice) {
2821 switch (T.getArch()) {
2824 // Add unsupported host targets here:
2825 case llvm::Triple::nvptx:
2826 case llvm::Triple::nvptx64:
2827 Diags.Report(diag::err_drv_omp_host_target_not_supported)
2828 << TargetOpts.Triple;
2834 // Set the flag to prevent the implementation from emitting device exception
2835 // handling code for those requiring so.
2836 Opts.OpenMPHostCXXExceptions = Opts.Exceptions && Opts.CXXExceptions;
2837 if ((Opts.OpenMPIsDevice && T.isNVPTX()) || Opts.OpenCLCPlusPlus) {
2838 Opts.Exceptions = 0;
2839 Opts.CXXExceptions = 0;
2841 if (Opts.OpenMPIsDevice && T.isNVPTX()) {
2842 Opts.OpenMPCUDANumSMs =
2843 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_number_of_sm_EQ,
2844 Opts.OpenMPCUDANumSMs, Diags);
2845 Opts.OpenMPCUDABlocksPerSM =
2846 getLastArgIntValue(Args, options::OPT_fopenmp_cuda_blocks_per_sm_EQ,
2847 Opts.OpenMPCUDABlocksPerSM, Diags);
2850 // Prevent auto-widening the representation of loop counters during an
2851 // OpenMP collapse clause.
2852 Opts.OpenMPOptimisticCollapse =
2853 Args.hasArg(options::OPT_fopenmp_optimistic_collapse) ? 1 : 0;
2855 // Get the OpenMP target triples if any.
2856 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) {
2858 for (unsigned i = 0; i < A->getNumValues(); ++i) {
2859 llvm::Triple TT(A->getValue(i));
2861 if (TT.getArch() == llvm::Triple::UnknownArch ||
2862 !(TT.getArch() == llvm::Triple::ppc ||
2863 TT.getArch() == llvm::Triple::ppc64 ||
2864 TT.getArch() == llvm::Triple::ppc64le ||
2865 TT.getArch() == llvm::Triple::nvptx ||
2866 TT.getArch() == llvm::Triple::nvptx64 ||
2867 TT.getArch() == llvm::Triple::x86 ||
2868 TT.getArch() == llvm::Triple::x86_64))
2869 Diags.Report(diag::err_drv_invalid_omp_target) << A->getValue(i);
2871 Opts.OMPTargetTriples.push_back(TT);
2875 // Get OpenMP host file path if any and report if a non existent file is
2877 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) {
2878 Opts.OMPHostIRFile = A->getValue();
2879 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile))
2880 Diags.Report(diag::err_drv_omp_host_ir_file_not_found)
2881 << Opts.OMPHostIRFile;
2884 // Set CUDA mode for OpenMP target NVPTX if specified in options
2885 Opts.OpenMPCUDAMode = Opts.OpenMPIsDevice && T.isNVPTX() &&
2886 Args.hasArg(options::OPT_fopenmp_cuda_mode);
2888 // Set CUDA mode for OpenMP target NVPTX if specified in options
2889 Opts.OpenMPCUDAForceFullRuntime =
2890 Opts.OpenMPIsDevice && T.isNVPTX() &&
2891 Args.hasArg(options::OPT_fopenmp_cuda_force_full_runtime);
2893 // Record whether the __DEPRECATED define was requested.
2894 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
2895 OPT_fno_deprecated_macro,
2898 // FIXME: Eliminate this dependency.
2899 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
2900 OptSize = getOptimizationLevelSize(Args);
2901 Opts.Optimize = Opt != 0;
2902 Opts.OptimizeSize = OptSize != 0;
2904 // This is the __NO_INLINE__ define, which just depends on things like the
2905 // optimization level and -fno-inline, not actually whether the backend has
2906 // inlining enabled.
2907 Opts.NoInlineDefine = !Opts.Optimize;
2908 if (Arg *InlineArg = Args.getLastArg(
2909 options::OPT_finline_functions, options::OPT_finline_hint_functions,
2910 options::OPT_fno_inline_functions, options::OPT_fno_inline))
2911 if (InlineArg->getOption().matches(options::OPT_fno_inline))
2912 Opts.NoInlineDefine = true;
2914 Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
2915 Args.hasArg(OPT_cl_fast_relaxed_math);
2916 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
2917 Args.hasArg(OPT_cl_finite_math_only) ||
2918 Args.hasArg(OPT_cl_fast_relaxed_math);
2919 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
2920 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
2921 Args.hasArg(OPT_cl_fast_relaxed_math);
2923 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
2924 StringRef Val = A->getValue();
2926 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast);
2927 else if (Val == "on")
2928 Opts.setDefaultFPContractMode(LangOptions::FPC_On);
2929 else if (Val == "off")
2930 Opts.setDefaultFPContractMode(LangOptions::FPC_Off);
2932 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
2935 Opts.RetainCommentsFromSystemHeaders =
2936 Args.hasArg(OPT_fretain_comments_from_system_headers);
2938 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
2941 Diags.Report(diag::err_drv_invalid_value)
2942 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
2944 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
2945 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
2946 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
2947 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
2950 if (Arg *A = Args.getLastArg(OPT_ftrivial_auto_var_init)) {
2951 StringRef Val = A->getValue();
2952 if (Val == "uninitialized")
2953 Opts.setTrivialAutoVarInit(
2954 LangOptions::TrivialAutoVarInitKind::Uninitialized);
2955 else if (Val == "zero")
2956 Opts.setTrivialAutoVarInit(LangOptions::TrivialAutoVarInitKind::Zero);
2957 else if (Val == "pattern")
2958 Opts.setTrivialAutoVarInit(LangOptions::TrivialAutoVarInitKind::Pattern);
2960 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
2963 // Parse -fsanitize= arguments.
2964 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2965 Diags, Opts.Sanitize);
2966 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
2967 Opts.SanitizeAddressFieldPadding =
2968 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
2969 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist);
2971 // -fxray-instrument
2972 Opts.XRayInstrument =
2973 Args.hasFlag(OPT_fxray_instrument, OPT_fnoxray_instrument, false);
2975 // -fxray-always-emit-customevents
2976 Opts.XRayAlwaysEmitCustomEvents =
2977 Args.hasFlag(OPT_fxray_always_emit_customevents,
2978 OPT_fnoxray_always_emit_customevents, false);
2980 // -fxray-always-emit-typedevents
2981 Opts.XRayAlwaysEmitTypedEvents =
2982 Args.hasFlag(OPT_fxray_always_emit_typedevents,
2983 OPT_fnoxray_always_emit_customevents, false);
2985 // -fxray-{always,never}-instrument= filenames.
2986 Opts.XRayAlwaysInstrumentFiles =
2987 Args.getAllArgValues(OPT_fxray_always_instrument);
2988 Opts.XRayNeverInstrumentFiles =
2989 Args.getAllArgValues(OPT_fxray_never_instrument);
2990 Opts.XRayAttrListFiles = Args.getAllArgValues(OPT_fxray_attr_list);
2992 // -fforce-emit-vtables
2993 Opts.ForceEmitVTables = Args.hasArg(OPT_fforce_emit_vtables);
2995 // -fallow-editor-placeholders
2996 Opts.AllowEditorPlaceholders = Args.hasArg(OPT_fallow_editor_placeholders);
2998 Opts.RegisterStaticDestructors = !Args.hasArg(OPT_fno_cxx_static_destructors);
3000 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) {
3001 Opts.setClangABICompat(LangOptions::ClangABI::Latest);
3003 StringRef Ver = A->getValue();
3004 std::pair<StringRef, StringRef> VerParts = Ver.split('.');
3005 unsigned Major, Minor = 0;
3007 // Check the version number is valid: either 3.x (0 <= x <= 9) or
3008 // y or y.0 (4 <= y <= current version).
3009 if (!VerParts.first.startswith("0") &&
3010 !VerParts.first.getAsInteger(10, Major) &&
3011 3 <= Major && Major <= CLANG_VERSION_MAJOR &&
3012 (Major == 3 ? VerParts.second.size() == 1 &&
3013 !VerParts.second.getAsInteger(10, Minor)
3014 : VerParts.first.size() == Ver.size() ||
3015 VerParts.second == "0")) {
3016 // Got a valid version number.
3017 if (Major == 3 && Minor <= 8)
3018 Opts.setClangABICompat(LangOptions::ClangABI::Ver3_8);
3019 else if (Major <= 4)
3020 Opts.setClangABICompat(LangOptions::ClangABI::Ver4);
3021 else if (Major <= 6)
3022 Opts.setClangABICompat(LangOptions::ClangABI::Ver6);
3023 else if (Major <= 7)
3024 Opts.setClangABICompat(LangOptions::ClangABI::Ver7);
3025 } else if (Ver != "latest") {
3026 Diags.Report(diag::err_drv_invalid_value)
3027 << A->getAsString(Args) << A->getValue();
3031 Opts.CompleteMemberPointers = Args.hasArg(OPT_fcomplete_member_pointers);
3032 Opts.BuildingPCHWithObjectFile = Args.hasArg(OPT_building_pch_with_obj);
3035 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) {
3037 case frontend::ASTDeclList:
3038 case frontend::ASTDump:
3039 case frontend::ASTPrint:
3040 case frontend::ASTView:
3041 case frontend::EmitAssembly:
3042 case frontend::EmitBC:
3043 case frontend::EmitHTML:
3044 case frontend::EmitLLVM:
3045 case frontend::EmitLLVMOnly:
3046 case frontend::EmitCodeGenOnly:
3047 case frontend::EmitObj:
3048 case frontend::FixIt:
3049 case frontend::GenerateModule:
3050 case frontend::GenerateModuleInterface:
3051 case frontend::GenerateHeaderModule:
3052 case frontend::GeneratePCH:
3053 case frontend::ParseSyntaxOnly:
3054 case frontend::ModuleFileInfo:
3055 case frontend::VerifyPCH:
3056 case frontend::PluginAction:
3057 case frontend::RewriteObjC:
3058 case frontend::RewriteTest:
3059 case frontend::RunAnalysis:
3060 case frontend::TemplightDump:
3061 case frontend::MigrateSource:
3064 case frontend::DumpCompilerOptions:
3065 case frontend::DumpRawTokens:
3066 case frontend::DumpTokens:
3067 case frontend::InitOnly:
3068 case frontend::PrintPreamble:
3069 case frontend::PrintPreprocessedInput:
3070 case frontend::RewriteMacros:
3071 case frontend::RunPreprocessorOnly:
3074 llvm_unreachable("invalid frontend action");
3077 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
3078 DiagnosticsEngine &Diags,
3079 frontend::ActionKind Action) {
3080 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
3081 Opts.PCHWithHdrStop = Args.hasArg(OPT_pch_through_hdrstop_create) ||
3082 Args.hasArg(OPT_pch_through_hdrstop_use);
3083 Opts.PCHWithHdrStopCreate = Args.hasArg(OPT_pch_through_hdrstop_create);
3084 Opts.PCHThroughHeader = Args.getLastArgValue(OPT_pch_through_header_EQ);
3085 Opts.UsePredefines = !Args.hasArg(OPT_undef);
3086 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
3087 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
3088 Opts.AllowPCHWithCompilerErrors = Args.hasArg(OPT_fallow_pch_with_errors);
3090 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
3091 for (const auto *A : Args.filtered(OPT_error_on_deserialized_pch_decl))
3092 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
3094 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
3095 StringRef Value(A->getValue());
3096 size_t Comma = Value.find(',');
3098 unsigned EndOfLine = 0;
3100 if (Comma == StringRef::npos ||
3101 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
3102 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
3103 Diags.Report(diag::err_drv_preamble_format);
3105 Opts.PrecompiledPreambleBytes.first = Bytes;
3106 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
3110 // Add the __CET__ macro if a CFProtection option is set.
3111 if (const Arg *A = Args.getLastArg(OPT_fcf_protection_EQ)) {
3112 StringRef Name = A->getValue();
3113 if (Name == "branch")
3114 Opts.addMacroDef("__CET__=1");
3115 else if (Name == "return")
3116 Opts.addMacroDef("__CET__=2");
3117 else if (Name == "full")
3118 Opts.addMacroDef("__CET__=3");
3121 // Add macros from the command line.
3122 for (const auto *A : Args.filtered(OPT_D, OPT_U)) {
3123 if (A->getOption().matches(OPT_D))
3124 Opts.addMacroDef(A->getValue());
3126 Opts.addMacroUndef(A->getValue());
3129 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
3131 // Add the ordered list of -includes.
3132 for (const auto *A : Args.filtered(OPT_include))
3133 Opts.Includes.emplace_back(A->getValue());
3135 for (const auto *A : Args.filtered(OPT_chain_include))
3136 Opts.ChainedIncludes.emplace_back(A->getValue());
3138 for (const auto *A : Args.filtered(OPT_remap_file)) {
3139 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';');
3141 if (Split.second.empty()) {
3142 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
3146 Opts.addRemappedFile(Split.first, Split.second);
3149 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
3150 StringRef Name = A->getValue();
3151 unsigned Library = llvm::StringSwitch<unsigned>(Name)
3152 .Case("libc++", ARCXX_libcxx)
3153 .Case("libstdc++", ARCXX_libstdcxx)
3154 .Case("none", ARCXX_nolib)
3157 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
3159 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
3162 // Always avoid lexing editor placeholders when we're just running the
3163 // preprocessor as we never want to emit the
3164 // "editor placeholder in source file" error in PP only mode.
3165 if (isStrictlyPreprocessorAction(Action))
3166 Opts.LexEditorPlaceholders = false;
3169 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
3171 frontend::ActionKind Action) {
3172 if (isStrictlyPreprocessorAction(Action))
3173 Opts.ShowCPP = !Args.hasArg(OPT_dM);
3177 Opts.ShowComments = Args.hasArg(OPT_C);
3178 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
3179 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
3180 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
3181 Opts.ShowIncludeDirectives = Args.hasArg(OPT_dI);
3182 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
3183 Opts.RewriteImports = Args.hasArg(OPT_frewrite_imports);
3184 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives);
3187 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args,
3188 DiagnosticsEngine &Diags) {
3189 Opts.CodeModel = getCodeModel(Args, Diags);
3190 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
3191 if (Arg *A = Args.getLastArg(OPT_meabi)) {
3192 StringRef Value = A->getValue();
3193 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value)
3194 .Case("default", llvm::EABI::Default)
3195 .Case("4", llvm::EABI::EABI4)
3196 .Case("5", llvm::EABI::EABI5)
3197 .Case("gnu", llvm::EABI::GNU)
3198 .Default(llvm::EABI::Unknown);
3199 if (EABIVersion == llvm::EABI::Unknown)
3200 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
3203 Opts.EABIVersion = EABIVersion;
3205 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
3206 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
3207 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
3208 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
3209 Opts.Triple = Args.getLastArgValue(OPT_triple);
3210 // Use the default target triple if unspecified.
3211 if (Opts.Triple.empty())
3212 Opts.Triple = llvm::sys::getDefaultTargetTriple();
3213 Opts.Triple = llvm::Triple::normalize(Opts.Triple);
3214 Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ);
3215 Opts.ForceEnableInt128 = Args.hasArg(OPT_fforce_enable_int128);
3216 Opts.NVPTXUseShortPointers = Args.hasFlag(
3217 options::OPT_fcuda_short_ptr, options::OPT_fno_cuda_short_ptr, false);
3218 if (Arg *A = Args.getLastArg(options::OPT_target_sdk_version_EQ)) {
3219 llvm::VersionTuple Version;
3220 if (Version.tryParse(A->getValue()))
3221 Diags.Report(diag::err_drv_invalid_value)
3222 << A->getAsString(Args) << A->getValue();
3224 Opts.SDKVersion = Version;
3228 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
3229 const char *const *ArgBegin,
3230 const char *const *ArgEnd,
3231 DiagnosticsEngine &Diags) {
3232 bool Success = true;
3234 // Parse the arguments.
3235 std::unique_ptr<OptTable> Opts = createDriverOptTable();
3236 const unsigned IncludedFlagsBitmask = options::CC1Option;
3237 unsigned MissingArgIndex, MissingArgCount;
3239 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex,
3240 MissingArgCount, IncludedFlagsBitmask);
3241 LangOptions &LangOpts = *Res.getLangOpts();
3243 // Check for missing argument error.
3244 if (MissingArgCount) {
3245 Diags.Report(diag::err_drv_missing_argument)
3246 << Args.getArgString(MissingArgIndex) << MissingArgCount;
3250 // Issue errors on unknown arguments.
3251 for (const auto *A : Args.filtered(OPT_UNKNOWN)) {
3252 auto ArgString = A->getAsString(Args);
3253 std::string Nearest;
3254 if (Opts->findNearest(ArgString, Nearest, IncludedFlagsBitmask) > 1)
3255 Diags.Report(diag::err_drv_unknown_argument) << ArgString;
3257 Diags.Report(diag::err_drv_unknown_argument_with_suggestion)
3258 << ArgString << Nearest;
3262 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags);
3263 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args);
3264 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args);
3266 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags,
3267 false /*DefaultDiagColor*/, false /*DefaultShowOpt*/);
3268 ParseCommentArgs(LangOpts.CommentOpts, Args);
3269 ParseFileSystemArgs(Res.getFileSystemOpts(), Args);
3270 // FIXME: We shouldn't have to pass the DashX option around here
3271 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags,
3272 LangOpts.IsHeaderFile);
3273 ParseTargetArgs(Res.getTargetOpts(), Args, Diags);
3274 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags,
3275 Res.getTargetOpts(), Res.getFrontendOpts());
3276 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args,
3277 Res.getFileSystemOpts().WorkingDir);
3278 llvm::Triple T(Res.getTargetOpts().Triple);
3279 if (DashX.getFormat() == InputKind::Precompiled ||
3280 DashX.getLanguage() == InputKind::LLVM_IR) {
3281 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the
3282 // PassManager in BackendUtil.cpp. They need to be initializd no matter
3283 // what the input type is.
3284 if (Args.hasArg(OPT_fobjc_arc))
3285 LangOpts.ObjCAutoRefCount = 1;
3286 // PIClevel and PIELevel are needed during code generation and this should be
3287 // set regardless of the input type.
3288 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
3289 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie);
3290 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
3291 Diags, LangOpts.Sanitize);
3293 // Other LangOpts are only initialized when the input is not AST or LLVM IR.
3294 // FIXME: Should we really be calling this for an InputKind::Asm input?
3295 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(),
3296 Res.getPreprocessorOpts(), Diags);
3297 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
3298 LangOpts.ObjCExceptions = 1;
3299 if (T.isOSDarwin() && DashX.isPreprocessed()) {
3300 // Supress the darwin-specific 'stdlibcxx-not-found' diagnostic for
3301 // preprocessed input as we don't expect it to be used with -std=libc++
3303 Res.getDiagnosticOpts().Warnings.push_back("no-stdlibcxx-not-found");
3307 LangOpts.FunctionAlignment =
3308 getLastArgIntValue(Args, OPT_function_alignment, 0, Diags);
3310 if (LangOpts.CUDA) {
3311 // During CUDA device-side compilation, the aux triple is the
3312 // triple used for host compilation.
3313 if (LangOpts.CUDAIsDevice)
3314 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
3317 // Set the triple of the host for OpenMP device compile.
3318 if (LangOpts.OpenMPIsDevice)
3319 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
3321 // FIXME: Override value name discarding when asan or msan is used because the
3322 // backend passes depend on the name of the alloca in order to print out
3324 Res.getCodeGenOpts().DiscardValueNames &=
3325 !LangOpts.Sanitize.has(SanitizerKind::Address) &&
3326 !LangOpts.Sanitize.has(SanitizerKind::KernelAddress) &&
3327 !LangOpts.Sanitize.has(SanitizerKind::Memory) &&
3328 !LangOpts.Sanitize.has(SanitizerKind::KernelMemory);
3330 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, Diags,
3331 Res.getFrontendOpts().ProgramAction);
3332 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args,
3333 Res.getFrontendOpts().ProgramAction);
3335 // Turn on -Wspir-compat for SPIR target.
3336 auto Arch = T.getArch();
3337 if (Arch == llvm::Triple::spir || Arch == llvm::Triple::spir64) {
3338 Res.getDiagnosticOpts().Warnings.push_back("spir-compat");
3341 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses.
3342 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses &&
3343 !Res.getLangOpts()->Sanitize.empty()) {
3344 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false;
3345 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored);
3350 std::string CompilerInvocation::getModuleHash() const {
3351 // Note: For QoI reasons, the things we use as a hash here should all be
3352 // dumped via the -module-info flag.
3353 using llvm::hash_code;
3354 using llvm::hash_value;
3355 using llvm::hash_combine;
3357 // Start the signature with the compiler version.
3358 // FIXME: We'd rather use something more cryptographically sound than
3359 // CityHash, but this will do for now.
3360 hash_code code = hash_value(getClangFullRepositoryVersion());
3362 // Extend the signature with the language options
3363 #define LANGOPT(Name, Bits, Default, Description) \
3364 code = hash_combine(code, LangOpts->Name);
3365 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
3366 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
3367 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
3368 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
3369 #include "clang/Basic/LangOptions.def"
3371 for (StringRef Feature : LangOpts->ModuleFeatures)
3372 code = hash_combine(code, Feature);
3374 // Extend the signature with the target options.
3375 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
3377 for (const auto &FeatureAsWritten : TargetOpts->FeaturesAsWritten)
3378 code = hash_combine(code, FeatureAsWritten);
3380 // Extend the signature with preprocessor options.
3381 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
3382 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
3383 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
3385 for (const auto &I : getPreprocessorOpts().Macros) {
3386 // If we're supposed to ignore this macro for the purposes of modules,
3387 // don't put it into the hash.
3388 if (!hsOpts.ModulesIgnoreMacros.empty()) {
3389 // Check whether we're ignoring this macro.
3390 StringRef MacroDef = I.first;
3391 if (hsOpts.ModulesIgnoreMacros.count(
3392 llvm::CachedHashString(MacroDef.split('=').first)))
3396 code = hash_combine(code, I.first, I.second);
3399 // Extend the signature with the sysroot and other header search options.
3400 code = hash_combine(code, hsOpts.Sysroot,
3401 hsOpts.ModuleFormat,
3402 hsOpts.UseDebugInfo,
3403 hsOpts.UseBuiltinIncludes,
3404 hsOpts.UseStandardSystemIncludes,
3405 hsOpts.UseStandardCXXIncludes,
3407 hsOpts.ModulesValidateDiagnosticOptions);
3408 code = hash_combine(code, hsOpts.ResourceDir);
3410 // Extend the signature with the user build path.
3411 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
3413 // Extend the signature with the module file extensions.
3414 const FrontendOptions &frontendOpts = getFrontendOpts();
3415 for (const auto &ext : frontendOpts.ModuleFileExtensions) {
3416 code = ext->hashExtension(code);
3419 // When compiling with -gmodules, also hash -fdebug-prefix-map as it
3420 // affects the debug info in the PCM.
3421 if (getCodeGenOpts().DebugTypeExtRefs)
3422 for (const auto &KeyValue : getCodeGenOpts().DebugPrefixMap)
3423 code = hash_combine(code, KeyValue.first, KeyValue.second);
3425 // Extend the signature with the enabled sanitizers, if at least one is
3426 // enabled. Sanitizers which cannot affect AST generation aren't hashed.
3427 SanitizerSet SanHash = LangOpts->Sanitize;
3428 SanHash.clear(getPPTransparentSanitizers());
3429 if (!SanHash.empty())
3430 code = hash_combine(code, SanHash.Mask);
3432 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
3435 template<typename IntTy>
3436 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
3438 DiagnosticsEngine *Diags) {
3439 IntTy Res = Default;
3440 if (Arg *A = Args.getLastArg(Id)) {
3441 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
3443 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
3452 // Declared in clang/Frontend/Utils.h.
3453 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
3454 DiagnosticsEngine *Diags) {
3455 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
3458 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
3460 DiagnosticsEngine *Diags) {
3461 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
3464 IntrusiveRefCntPtr<llvm::vfs::FileSystem>
3465 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
3466 DiagnosticsEngine &Diags) {
3467 return createVFSFromCompilerInvocation(CI, Diags,
3468 llvm::vfs::getRealFileSystem());
3471 IntrusiveRefCntPtr<llvm::vfs::FileSystem> createVFSFromCompilerInvocation(
3472 const CompilerInvocation &CI, DiagnosticsEngine &Diags,
3473 IntrusiveRefCntPtr<llvm::vfs::FileSystem> BaseFS) {
3474 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
3477 IntrusiveRefCntPtr<llvm::vfs::FileSystem> Result = BaseFS;
3478 // earlier vfs files are on the bottom
3479 for (const auto &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
3480 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
3481 Result->getBufferForFile(File);
3483 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
3487 IntrusiveRefCntPtr<llvm::vfs::FileSystem> FS = llvm::vfs::getVFSFromYAML(
3488 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File,
3489 /*DiagContext*/ nullptr, Result);
3491 Diags.Report(diag::err_invalid_vfs_overlay) << File;
3500 } // namespace clang