1 //===--- CompilerInvocation.cpp -------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "clang/Frontend/CompilerInvocation.h"
11 #include "TestModuleFileExtension.h"
12 #include "clang/Basic/Builtins.h"
13 #include "clang/Basic/FileManager.h"
14 #include "clang/Basic/Version.h"
15 #include "clang/Config/config.h"
16 #include "clang/Driver/DriverDiagnostic.h"
17 #include "clang/Driver/Options.h"
18 #include "clang/Driver/Util.h"
19 #include "clang/Frontend/FrontendDiagnostic.h"
20 #include "clang/Frontend/LangStandard.h"
21 #include "clang/Frontend/Utils.h"
22 #include "clang/Lex/HeaderSearchOptions.h"
23 #include "clang/Lex/PreprocessorOptions.h"
24 #include "clang/Serialization/ASTReader.h"
25 #include "clang/Serialization/ModuleFileExtension.h"
26 #include "llvm/ADT/Hashing.h"
27 #include "llvm/ADT/STLExtras.h"
28 #include "llvm/ADT/SmallVector.h"
29 #include "llvm/ADT/StringExtras.h"
30 #include "llvm/ADT/StringSwitch.h"
31 #include "llvm/ADT/Triple.h"
32 #include "llvm/Linker/Linker.h"
33 #include "llvm/Option/Arg.h"
34 #include "llvm/Option/ArgList.h"
35 #include "llvm/Option/OptTable.h"
36 #include "llvm/Option/Option.h"
37 #include "llvm/ProfileData/InstrProfReader.h"
38 #include "llvm/Support/CodeGen.h"
39 #include "llvm/Support/ErrorHandling.h"
40 #include "llvm/Support/FileSystem.h"
41 #include "llvm/Support/Host.h"
42 #include "llvm/Support/Path.h"
43 #include "llvm/Support/Process.h"
44 #include "llvm/Target/TargetOptions.h"
45 #include "llvm/Support/ScopedPrinter.h"
49 #include <system_error>
50 using namespace clang;
52 //===----------------------------------------------------------------------===//
54 //===----------------------------------------------------------------------===//
56 CompilerInvocationBase::CompilerInvocationBase()
57 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
58 DiagnosticOpts(new DiagnosticOptions()),
59 HeaderSearchOpts(new HeaderSearchOptions()),
60 PreprocessorOpts(new PreprocessorOptions()) {}
62 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
63 : LangOpts(new LangOptions(*X.getLangOpts())),
64 TargetOpts(new TargetOptions(X.getTargetOpts())),
65 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
66 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
67 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
69 CompilerInvocationBase::~CompilerInvocationBase() {}
71 //===----------------------------------------------------------------------===//
72 // Deserialization (from args)
73 //===----------------------------------------------------------------------===//
75 using namespace clang::driver;
76 using namespace clang::driver::options;
77 using namespace llvm::opt;
81 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
82 DiagnosticsEngine &Diags) {
83 unsigned DefaultOpt = 0;
84 if (IK.getLanguage() == InputKind::OpenCL && !Args.hasArg(OPT_cl_opt_disable))
87 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
88 if (A->getOption().matches(options::OPT_O0))
91 if (A->getOption().matches(options::OPT_Ofast))
94 assert (A->getOption().matches(options::OPT_O));
96 StringRef S(A->getValue());
97 if (S == "s" || S == "z" || S.empty())
103 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
109 static unsigned getOptimizationLevelSize(ArgList &Args) {
110 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
111 if (A->getOption().matches(options::OPT_O)) {
112 switch (A->getValue()[0]) {
125 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
126 OptSpecifier GroupWithValue,
127 std::vector<std::string> &Diagnostics) {
128 for (Arg *A : Args.filtered(Group)) {
129 if (A->getOption().getKind() == Option::FlagClass) {
130 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
131 // its name (minus the "W" or "R" at the beginning) to the warning list.
132 Diagnostics.push_back(A->getOption().getName().drop_front(1));
133 } else if (A->getOption().matches(GroupWithValue)) {
134 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group.
135 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-"));
137 // Otherwise, add its value (for OPT_W_Joined and similar).
138 for (const char *Arg : A->getValues())
139 Diagnostics.emplace_back(Arg);
144 static void getAllNoBuiltinFuncValues(ArgList &Args,
145 std::vector<std::string> &Funcs) {
146 SmallVector<const char *, 8> Values;
147 for (const auto &Arg : Args) {
148 const Option &O = Arg->getOption();
149 if (O.matches(options::OPT_fno_builtin_)) {
150 const char *FuncName = Arg->getValue();
151 if (Builtin::Context::isBuiltinFunc(FuncName))
152 Values.push_back(FuncName);
155 Funcs.insert(Funcs.end(), Values.begin(), Values.end());
158 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
159 DiagnosticsEngine &Diags) {
160 using namespace options;
162 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
163 StringRef Name = A->getValue();
164 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
165 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
166 .Case(CMDFLAG, NAME##Model)
167 #include "clang/StaticAnalyzer/Core/Analyses.def"
169 if (Value == NumStores) {
170 Diags.Report(diag::err_drv_invalid_value)
171 << A->getAsString(Args) << Name;
174 Opts.AnalysisStoreOpt = Value;
178 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
179 StringRef Name = A->getValue();
180 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
181 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
182 .Case(CMDFLAG, NAME##Model)
183 #include "clang/StaticAnalyzer/Core/Analyses.def"
184 .Default(NumConstraints);
185 if (Value == NumConstraints) {
186 Diags.Report(diag::err_drv_invalid_value)
187 << A->getAsString(Args) << Name;
190 Opts.AnalysisConstraintsOpt = Value;
194 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
195 StringRef Name = A->getValue();
196 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
197 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
198 .Case(CMDFLAG, PD_##NAME)
199 #include "clang/StaticAnalyzer/Core/Analyses.def"
200 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
201 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
202 Diags.Report(diag::err_drv_invalid_value)
203 << A->getAsString(Args) << Name;
206 Opts.AnalysisDiagOpt = Value;
210 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
211 StringRef Name = A->getValue();
212 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
213 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
215 #include "clang/StaticAnalyzer/Core/Analyses.def"
216 .Default(NumPurgeModes);
217 if (Value == NumPurgeModes) {
218 Diags.Report(diag::err_drv_invalid_value)
219 << A->getAsString(Args) << Name;
222 Opts.AnalysisPurgeOpt = Value;
226 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
227 StringRef Name = A->getValue();
228 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
229 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
231 #include "clang/StaticAnalyzer/Core/Analyses.def"
232 .Default(NumInliningModes);
233 if (Value == NumInliningModes) {
234 Diags.Report(diag::err_drv_invalid_value)
235 << A->getAsString(Args) << Name;
238 Opts.InliningMode = Value;
242 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
243 Opts.ShowEnabledCheckerList = Args.hasArg(OPT_analyzer_list_enabled_checkers);
244 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks);
246 Opts.visualizeExplodedGraphWithGraphViz =
247 Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
248 Opts.visualizeExplodedGraphWithUbiGraph =
249 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
250 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
251 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
252 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
253 Opts.AnalyzeNestedBlocks =
254 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
255 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume);
256 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
257 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
258 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
259 Opts.maxBlockVisitOnPath =
260 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags);
261 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
262 Opts.InlineMaxStackDepth =
263 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth,
264 Opts.InlineMaxStackDepth, Diags);
266 Opts.CheckersControlList.clear();
268 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) {
270 bool enable = (A->getOption().getID() == OPT_analyzer_checker);
271 // We can have a list of comma separated checker names, e.g:
272 // '-analyzer-checker=cocoa,unix'
273 StringRef checkerList = A->getValue();
274 SmallVector<StringRef, 4> checkers;
275 checkerList.split(checkers, ",");
276 for (StringRef checker : checkers)
277 Opts.CheckersControlList.emplace_back(checker, enable);
280 // Go through the analyzer configuration options.
281 for (const Arg *A : Args.filtered(OPT_analyzer_config)) {
283 // We can have a list of comma separated config names, e.g:
284 // '-analyzer-config key1=val1,key2=val2'
285 StringRef configList = A->getValue();
286 SmallVector<StringRef, 4> configVals;
287 configList.split(configVals, ",");
288 for (unsigned i = 0, e = configVals.size(); i != e; ++i) {
290 std::tie(key, val) = configVals[i].split("=");
292 Diags.Report(SourceLocation(),
293 diag::err_analyzer_config_no_value) << configVals[i];
297 if (val.find('=') != StringRef::npos) {
298 Diags.Report(SourceLocation(),
299 diag::err_analyzer_config_multiple_values)
304 Opts.Config[key] = val;
311 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
312 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
313 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
317 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
318 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
319 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments);
322 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) {
323 if (Arg *A = Args.getLastArg(OPT_mcode_model)) {
324 StringRef Value = A->getValue();
325 if (Value == "small" || Value == "kernel" || Value == "medium" ||
328 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
333 static StringRef getRelocModel(ArgList &Args, DiagnosticsEngine &Diags) {
334 if (Arg *A = Args.getLastArg(OPT_mrelocation_model)) {
335 StringRef Value = A->getValue();
336 if (Value == "static" || Value == "pic" || Value == "ropi" ||
337 Value == "rwpi" || Value == "ropi-rwpi" || Value == "dynamic-no-pic")
339 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
344 /// \brief Create a new Regex instance out of the string value in \p RpassArg.
345 /// It returns a pointer to the newly generated Regex instance.
346 static std::shared_ptr<llvm::Regex>
347 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args,
349 StringRef Val = RpassArg->getValue();
350 std::string RegexError;
351 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
352 if (!Pattern->isValid(RegexError)) {
353 Diags.Report(diag::err_drv_optimization_remark_pattern)
354 << RegexError << RpassArg->getAsString(Args);
360 static bool parseDiagnosticLevelMask(StringRef FlagName,
361 const std::vector<std::string> &Levels,
362 DiagnosticsEngine *Diags,
363 DiagnosticLevelMask &M) {
365 for (const auto &Level : Levels) {
366 DiagnosticLevelMask const PM =
367 llvm::StringSwitch<DiagnosticLevelMask>(Level)
368 .Case("note", DiagnosticLevelMask::Note)
369 .Case("remark", DiagnosticLevelMask::Remark)
370 .Case("warning", DiagnosticLevelMask::Warning)
371 .Case("error", DiagnosticLevelMask::Error)
372 .Default(DiagnosticLevelMask::None);
373 if (PM == DiagnosticLevelMask::None) {
376 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level;
383 static void parseSanitizerKinds(StringRef FlagName,
384 const std::vector<std::string> &Sanitizers,
385 DiagnosticsEngine &Diags, SanitizerSet &S) {
386 for (const auto &Sanitizer : Sanitizers) {
387 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false);
389 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
395 // Set the profile kind for fprofile-instrument.
396 static void setPGOInstrumentor(CodeGenOptions &Opts, ArgList &Args,
397 DiagnosticsEngine &Diags) {
398 Arg *A = Args.getLastArg(OPT_fprofile_instrument_EQ);
401 StringRef S = A->getValue();
402 unsigned I = llvm::StringSwitch<unsigned>(S)
403 .Case("none", CodeGenOptions::ProfileNone)
404 .Case("clang", CodeGenOptions::ProfileClangInstr)
405 .Case("llvm", CodeGenOptions::ProfileIRInstr)
408 Diags.Report(diag::err_drv_invalid_pgo_instrumentor) << A->getAsString(Args)
412 CodeGenOptions::ProfileInstrKind Instrumentor =
413 static_cast<CodeGenOptions::ProfileInstrKind>(I);
414 Opts.setProfileInstr(Instrumentor);
417 // Set the profile kind using fprofile-instrument-use-path.
418 static void setPGOUseInstrumentor(CodeGenOptions &Opts,
419 const Twine &ProfileName) {
420 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName);
421 // In error, return silently and let Clang PGOUse report the error message.
422 if (auto E = ReaderOrErr.takeError()) {
423 llvm::consumeError(std::move(E));
424 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
427 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader =
428 std::move(ReaderOrErr.get());
429 if (PGOReader->isIRLevelProfile())
430 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr);
432 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
435 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
436 DiagnosticsEngine &Diags,
437 const TargetOptions &TargetOpts) {
438 using namespace options;
440 llvm::Triple Triple = llvm::Triple(TargetOpts.Triple);
442 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
443 // TODO: This could be done in Driver
444 unsigned MaxOptLevel = 3;
445 if (OptimizationLevel > MaxOptLevel) {
446 // If the optimization level is not supported, fall back on the default
448 Diags.Report(diag::warn_drv_optimization_value)
449 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
450 OptimizationLevel = MaxOptLevel;
452 Opts.OptimizationLevel = OptimizationLevel;
454 // At O0 we want to fully disable inlining outside of cases marked with
455 // 'alwaysinline' that are required for correctness.
456 Opts.setInlining((Opts.OptimizationLevel == 0)
457 ? CodeGenOptions::OnlyAlwaysInlining
458 : CodeGenOptions::NormalInlining);
459 // Explicit inlining flags can disable some or all inlining even at
460 // optimization levels above zero.
461 if (Arg *InlineArg = Args.getLastArg(
462 options::OPT_finline_functions, options::OPT_finline_hint_functions,
463 options::OPT_fno_inline_functions, options::OPT_fno_inline)) {
464 if (Opts.OptimizationLevel > 0) {
465 const Option &InlineOpt = InlineArg->getOption();
466 if (InlineOpt.matches(options::OPT_finline_functions))
467 Opts.setInlining(CodeGenOptions::NormalInlining);
468 else if (InlineOpt.matches(options::OPT_finline_hint_functions))
469 Opts.setInlining(CodeGenOptions::OnlyHintInlining);
471 Opts.setInlining(CodeGenOptions::OnlyAlwaysInlining);
475 Opts.ExperimentalNewPassManager = Args.hasFlag(
476 OPT_fexperimental_new_pass_manager, OPT_fno_experimental_new_pass_manager,
477 /* Default */ false);
479 if (Arg *A = Args.getLastArg(OPT_fveclib)) {
480 StringRef Name = A->getValue();
481 if (Name == "Accelerate")
482 Opts.setVecLib(CodeGenOptions::Accelerate);
483 else if (Name == "SVML")
484 Opts.setVecLib(CodeGenOptions::SVML);
485 else if (Name == "none")
486 Opts.setVecLib(CodeGenOptions::NoLibrary);
488 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
491 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) {
493 llvm::StringSwitch<unsigned>(A->getValue())
494 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly)
495 .Case("limited", codegenoptions::LimitedDebugInfo)
496 .Case("standalone", codegenoptions::FullDebugInfo)
499 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
502 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val));
504 if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) {
505 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue())
506 .Case("gdb", unsigned(llvm::DebuggerKind::GDB))
507 .Case("lldb", unsigned(llvm::DebuggerKind::LLDB))
508 .Case("sce", unsigned(llvm::DebuggerKind::SCE))
511 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
514 Opts.setDebuggerTuning(static_cast<llvm::DebuggerKind>(Val));
516 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags);
517 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
518 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview);
519 Opts.MacroDebugInfo = Args.hasArg(OPT_debug_info_macro);
520 Opts.WholeProgramVTables = Args.hasArg(OPT_fwhole_program_vtables);
521 Opts.LTOVisibilityPublicStd = Args.hasArg(OPT_flto_visibility_public_std);
522 Opts.EnableSplitDwarf = Args.hasArg(OPT_enable_split_dwarf);
523 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
524 Opts.SplitDwarfInlining = !Args.hasArg(OPT_fno_split_dwarf_inlining);
525 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs);
526 Opts.DebugExplicitImport = Triple.isPS4CPU();
528 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ))
529 Opts.DebugPrefixMap.insert(StringRef(Arg).split('='));
532 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists))
533 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists;
535 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes);
536 Opts.DisableLifetimeMarkers = Args.hasArg(OPT_disable_lifetimemarkers);
537 Opts.DisableO0ImplyOptNone = Args.hasArg(OPT_disable_O0_optnone);
538 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
539 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
540 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
541 OPT_fuse_register_sized_bitfield_access);
542 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
543 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
544 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
545 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
546 Opts.NoCommon = Args.hasArg(OPT_fno_common);
547 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
548 Opts.OptimizeSize = getOptimizationLevelSize(Args);
549 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
550 Args.hasArg(OPT_ffreestanding));
551 if (Opts.SimplifyLibCalls)
552 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
554 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
555 (Opts.OptimizationLevel > 1));
556 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
558 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
559 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
560 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
561 Opts.DebugInfoForProfiling = Args.hasFlag(
562 OPT_fdebug_info_for_profiling, OPT_fno_debug_info_for_profiling, false);
564 setPGOInstrumentor(Opts, Args, Diags);
565 Opts.InstrProfileOutput =
566 Args.getLastArgValue(OPT_fprofile_instrument_path_EQ);
567 Opts.ProfileInstrumentUsePath =
568 Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ);
569 if (!Opts.ProfileInstrumentUsePath.empty())
570 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath);
572 Opts.CoverageMapping =
573 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false);
574 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
575 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
576 Opts.PreserveAsmComments = !Args.hasArg(OPT_fno_preserve_as_comments);
577 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
578 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
579 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
580 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
581 Opts.CodeModel = getCodeModel(Args, Diags);
582 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
584 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg));
585 Opts.DisableFree = Args.hasArg(OPT_disable_free);
586 Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names);
587 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
588 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
589 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable) ||
590 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
591 Args.hasArg(OPT_cl_fast_relaxed_math);
592 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
593 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
594 Args.hasArg(OPT_cl_finite_math_only) ||
595 Args.hasArg(OPT_cl_fast_relaxed_math));
596 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
597 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
598 Args.hasArg(OPT_cl_finite_math_only) ||
599 Args.hasArg(OPT_cl_fast_relaxed_math));
600 Opts.NoSignedZeros = (Args.hasArg(OPT_fno_signed_zeros) ||
601 Args.hasArg(OPT_cl_no_signed_zeros) ||
602 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
603 Args.hasArg(OPT_cl_fast_relaxed_math));
604 Opts.FlushDenorm = Args.hasArg(OPT_cl_denorms_are_zero);
605 Opts.CorrectlyRoundedDivSqrt =
606 Args.hasArg(OPT_cl_fp32_correctly_rounded_divide_sqrt);
607 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math);
608 Opts.NoTrappingMath = Args.hasArg(OPT_fno_trapping_math);
609 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
610 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
611 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
612 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
613 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
614 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
615 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
616 Opts.IncrementalLinkerCompatible =
617 Args.hasArg(OPT_mincremental_linker_compatible);
618 Opts.PIECopyRelocations =
619 Args.hasArg(OPT_mpie_copy_relocations);
620 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
621 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
622 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
623 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
624 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
625 Opts.StrictReturn = !Args.hasArg(OPT_fno_strict_return);
626 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers);
627 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
628 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
629 Args.hasArg(OPT_cl_fast_relaxed_math);
630 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
631 Opts.RelocationModel = getRelocModel(Args, Diags);
632 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
633 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
634 Diags.Report(diag::err_drv_invalid_value)
635 << Args.getLastArg(OPT_mthread_model)->getAsString(Args)
637 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
638 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
640 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
641 OPT_fno_function_sections, false);
642 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
643 OPT_fno_data_sections, false);
644 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names,
645 OPT_fno_unique_section_names, true);
647 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
649 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables);
651 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ);
652 const Arg *A = Args.getLastArg(OPT_flto, OPT_flto_EQ);
653 Opts.EmitSummaryIndex = A && A->containsValue("thin");
654 Opts.LTOUnit = Args.hasFlag(OPT_flto_unit, OPT_fno_lto_unit, false);
655 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) {
656 if (IK.getLanguage() != InputKind::LLVM_IR)
657 Diags.Report(diag::err_drv_argument_only_allowed_with)
658 << A->getAsString(Args) << "-x ir";
659 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ);
661 Opts.ThinLinkBitcodeFile = Args.getLastArgValue(OPT_fthin_link_bitcode_EQ);
663 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile);
665 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
666 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
667 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
669 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
670 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
672 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
673 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
674 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
675 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
676 Opts.CoverageDataFile = Args.getLastArgValue(OPT_coverage_data_file);
677 Opts.CoverageNotesFile = Args.getLastArgValue(OPT_coverage_notes_file);
678 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
679 Opts.CoverageNoFunctionNamesInData =
680 Args.hasArg(OPT_coverage_no_function_names_in_data);
681 Opts.CoverageExitBlockBeforeBody =
682 Args.hasArg(OPT_coverage_exit_block_before_body);
683 if (Args.hasArg(OPT_coverage_version_EQ)) {
684 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
685 if (CoverageVersion.size() != 4) {
686 Diags.Report(diag::err_drv_invalid_value)
687 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
690 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
694 // Handle -fembed-bitcode option.
695 if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) {
696 StringRef Name = A->getValue();
697 unsigned Model = llvm::StringSwitch<unsigned>(Name)
698 .Case("off", CodeGenOptions::Embed_Off)
699 .Case("all", CodeGenOptions::Embed_All)
700 .Case("bitcode", CodeGenOptions::Embed_Bitcode)
701 .Case("marker", CodeGenOptions::Embed_Marker)
704 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
707 Opts.setEmbedBitcode(
708 static_cast<CodeGenOptions::EmbedBitcodeKind>(Model));
710 // FIXME: For backend options that are not yet recorded as function
711 // attributes in the IR, keep track of them so we can embed them in a
712 // separate data section and use them when building the bitcode.
713 if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) {
714 for (const auto &A : Args) {
715 // Do not encode output and input.
716 if (A->getOption().getID() == options::OPT_o ||
717 A->getOption().getID() == options::OPT_INPUT ||
718 A->getOption().getID() == options::OPT_x ||
719 A->getOption().getID() == options::OPT_fembed_bitcode ||
720 (A->getOption().getGroup().isValid() &&
721 A->getOption().getGroup().getID() == options::OPT_W_Group))
724 A->render(Args, ASL);
725 for (const auto &arg : ASL) {
726 StringRef ArgStr(arg);
727 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end());
728 // using \00 to seperate each commandline options.
729 Opts.CmdArgs.push_back('\0');
734 Opts.PreserveVec3Type = Args.hasArg(OPT_fpreserve_vec3_type);
735 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
736 Opts.XRayInstrumentFunctions = Args.hasArg(OPT_fxray_instrument);
737 Opts.XRayInstructionThreshold =
738 getLastArgIntValue(Args, OPT_fxray_instruction_threshold_EQ, 200, Diags);
739 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
740 Opts.CallFEntry = Args.hasArg(OPT_mfentry);
741 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
742 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
743 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations);
744 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
745 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) {
746 CodeGenOptions::BitcodeFileToLink F;
747 F.Filename = A->getValue();
748 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) {
749 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded;
750 // When linking CUDA bitcode, propagate function attributes so that
751 // e.g. libdevice gets fast-math attrs if we're building with fast-math.
752 F.PropagateAttrs = true;
753 F.Internalize = true;
755 Opts.LinkBitcodeFiles.push_back(F);
757 Opts.SanitizeCoverageType =
758 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags);
759 Opts.SanitizeCoverageIndirectCalls =
760 Args.hasArg(OPT_fsanitize_coverage_indirect_calls);
761 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb);
762 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp);
763 Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div);
764 Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep);
765 Opts.SanitizeCoverage8bitCounters =
766 Args.hasArg(OPT_fsanitize_coverage_8bit_counters);
767 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc);
768 Opts.SanitizeCoverageTracePCGuard =
769 Args.hasArg(OPT_fsanitize_coverage_trace_pc_guard);
770 Opts.SanitizeCoverageNoPrune = Args.hasArg(OPT_fsanitize_coverage_no_prune);
771 Opts.SanitizeMemoryTrackOrigins =
772 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
773 Opts.SanitizeMemoryUseAfterDtor =
774 Args.hasArg(OPT_fsanitize_memory_use_after_dtor);
775 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso);
776 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats);
777 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_after_scope,
778 OPT_fno_sanitize_address_use_after_scope)) {
779 Opts.SanitizeAddressUseAfterScope =
780 A->getOption().getID() == OPT_fsanitize_address_use_after_scope;
782 Opts.SanitizeAddressGlobalsDeadStripping =
783 Args.hasArg(OPT_fsanitize_address_globals_dead_stripping);
785 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
786 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
787 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
788 StringRef Val = A->getValue();
789 unsigned StackAlignment = Opts.StackAlignment;
790 Val.getAsInteger(10, StackAlignment);
791 Opts.StackAlignment = StackAlignment;
794 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) {
795 StringRef Val = A->getValue();
796 unsigned StackProbeSize = Opts.StackProbeSize;
797 Val.getAsInteger(0, StackProbeSize);
798 Opts.StackProbeSize = StackProbeSize;
801 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
802 StringRef Name = A->getValue();
803 unsigned Method = llvm::StringSwitch<unsigned>(Name)
804 .Case("legacy", CodeGenOptions::Legacy)
805 .Case("non-legacy", CodeGenOptions::NonLegacy)
806 .Case("mixed", CodeGenOptions::Mixed)
809 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
812 Opts.setObjCDispatchMethod(
813 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
818 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false);
820 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
821 StringRef Name = A->getValue();
822 unsigned Model = llvm::StringSwitch<unsigned>(Name)
823 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
824 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
825 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
826 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
829 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
832 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
836 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) {
837 StringRef Val = A->getValue();
839 Opts.FPDenormalMode = "ieee";
840 else if (Val == "preserve-sign")
841 Opts.FPDenormalMode = "preserve-sign";
842 else if (Val == "positive-zero")
843 Opts.FPDenormalMode = "positive-zero";
845 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
848 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
849 if (A->getOption().matches(OPT_fpcc_struct_return)) {
850 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
852 assert(A->getOption().matches(OPT_freg_struct_return));
853 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
857 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
858 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option);
859 bool NeedLocTracking = false;
861 Opts.OptRecordFile = Args.getLastArgValue(OPT_opt_record_file);
862 if (!Opts.OptRecordFile.empty())
863 NeedLocTracking = true;
865 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
866 Opts.OptimizationRemarkPattern =
867 GenerateOptimizationRemarkRegex(Diags, Args, A);
868 NeedLocTracking = true;
871 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
872 Opts.OptimizationRemarkMissedPattern =
873 GenerateOptimizationRemarkRegex(Diags, Args, A);
874 NeedLocTracking = true;
877 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
878 Opts.OptimizationRemarkAnalysisPattern =
879 GenerateOptimizationRemarkRegex(Diags, Args, A);
880 NeedLocTracking = true;
883 Opts.DiagnosticsWithHotness =
884 Args.hasArg(options::OPT_fdiagnostics_show_hotness);
885 if (Opts.DiagnosticsWithHotness &&
886 Opts.getProfileUse() == CodeGenOptions::ProfileNone)
887 Diags.Report(diag::warn_drv_fdiagnostics_show_hotness_requires_pgo);
889 // If the user requested to use a sample profile for PGO, then the
890 // backend will need to track source location information so the profile
891 // can be incorporated into the IR.
892 if (!Opts.SampleProfileFile.empty())
893 NeedLocTracking = true;
895 // If the user requested a flag that requires source locations available in
896 // the backend, make sure that the backend tracks source location information.
897 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo)
898 Opts.setDebugInfo(codegenoptions::LocTrackingOnly);
900 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
902 // Parse -fsanitize-recover= arguments.
903 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
904 parseSanitizerKinds("-fsanitize-recover=",
905 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
906 Opts.SanitizeRecover);
907 parseSanitizerKinds("-fsanitize-trap=",
908 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags,
911 Opts.CudaGpuBinaryFileNames =
912 Args.getAllArgValues(OPT_fcuda_include_gpubinary);
914 Opts.Backchain = Args.hasArg(OPT_mbackchain);
916 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue(
917 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags);
922 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
924 using namespace options;
925 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
926 Opts.Targets = Args.getAllArgValues(OPT_MT);
927 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
928 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
929 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
930 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
931 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
932 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
933 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
934 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
935 Opts.ModuleDependencyOutputDir =
936 Args.getLastArgValue(OPT_module_dependency_dir);
937 if (Args.hasArg(OPT_MV))
938 Opts.OutputFormat = DependencyOutputFormat::NMake;
939 // Add sanitizer blacklists as extra dependencies.
940 // They won't be discovered by the regular preprocessor, so
941 // we let make / ninja to know about this implicit dependency.
942 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry);
943 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
944 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(),
948 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) {
949 // Color diagnostics default to auto ("on" if terminal supports) in the driver
950 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color.
951 // Support both clang's -f[no-]color-diagnostics and gcc's
952 // -f[no-]diagnostics-colors[=never|always|auto].
957 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off;
958 for (Arg *A : Args) {
959 const Option &O = A->getOption();
960 if (O.matches(options::OPT_fcolor_diagnostics) ||
961 O.matches(options::OPT_fdiagnostics_color)) {
962 ShowColors = Colors_On;
963 } else if (O.matches(options::OPT_fno_color_diagnostics) ||
964 O.matches(options::OPT_fno_diagnostics_color)) {
965 ShowColors = Colors_Off;
966 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
967 StringRef Value(A->getValue());
968 if (Value == "always")
969 ShowColors = Colors_On;
970 else if (Value == "never")
971 ShowColors = Colors_Off;
972 else if (Value == "auto")
973 ShowColors = Colors_Auto;
976 return ShowColors == Colors_On ||
977 (ShowColors == Colors_Auto &&
978 llvm::sys::Process::StandardErrHasColors());
981 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
982 DiagnosticsEngine *Diags,
983 bool DefaultDiagColor, bool DefaultShowOpt) {
984 using namespace options;
987 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
989 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
990 Opts.DiagnosticSerializationFile = A->getValue();
991 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
992 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
993 Opts.Pedantic = Args.hasArg(OPT_pedantic);
994 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
995 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
996 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor);
997 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1000 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1001 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1002 Opts.AbsolutePath = Args.hasArg(OPT_fdiagnostics_absolute_paths);
1003 Opts.ShowOptionNames =
1004 Args.hasFlag(OPT_fdiagnostics_show_option,
1005 OPT_fno_diagnostics_show_option, DefaultShowOpt);
1007 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
1009 // Default behavior is to not to show note include stacks.
1010 Opts.ShowNoteIncludeStack = false;
1011 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1012 OPT_fno_diagnostics_show_note_include_stack))
1013 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1014 Opts.ShowNoteIncludeStack = true;
1016 StringRef ShowOverloads =
1017 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1018 if (ShowOverloads == "best")
1019 Opts.setShowOverloads(Ovl_Best);
1020 else if (ShowOverloads == "all")
1021 Opts.setShowOverloads(Ovl_All);
1025 Diags->Report(diag::err_drv_invalid_value)
1026 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1030 StringRef ShowCategory =
1031 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1032 if (ShowCategory == "none")
1033 Opts.ShowCategories = 0;
1034 else if (ShowCategory == "id")
1035 Opts.ShowCategories = 1;
1036 else if (ShowCategory == "name")
1037 Opts.ShowCategories = 2;
1041 Diags->Report(diag::err_drv_invalid_value)
1042 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1047 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1048 if (Format == "clang")
1049 Opts.setFormat(DiagnosticOptions::Clang);
1050 else if (Format == "msvc")
1051 Opts.setFormat(DiagnosticOptions::MSVC);
1052 else if (Format == "msvc-fallback") {
1053 Opts.setFormat(DiagnosticOptions::MSVC);
1054 Opts.CLFallbackMode = true;
1055 } else if (Format == "vi")
1056 Opts.setFormat(DiagnosticOptions::Vi);
1060 Diags->Report(diag::err_drv_invalid_value)
1061 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1065 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1066 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1067 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
1068 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1069 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None;
1070 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=",
1071 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ),
1073 if (Args.hasArg(OPT_verify_ignore_unexpected))
1074 DiagMask = DiagnosticLevelMask::All;
1075 Opts.setVerifyIgnoreUnexpected(DiagMask);
1076 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
1077 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
1078 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
1079 Opts.MacroBacktraceLimit =
1080 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
1081 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1082 Opts.TemplateBacktraceLimit = getLastArgIntValue(
1083 Args, OPT_ftemplate_backtrace_limit,
1084 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
1085 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
1086 Args, OPT_fconstexpr_backtrace_limit,
1087 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
1088 Opts.SpellCheckingLimit = getLastArgIntValue(
1089 Args, OPT_fspell_checking_limit,
1090 DiagnosticOptions::DefaultSpellCheckingLimit, Diags);
1091 Opts.SnippetLineLimit = getLastArgIntValue(
1092 Args, OPT_fcaret_diagnostics_max_lines,
1093 DiagnosticOptions::DefaultSnippetLineLimit, Diags);
1094 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
1095 DiagnosticOptions::DefaultTabStop, Diags);
1096 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1097 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1099 Diags->Report(diag::warn_ignoring_ftabstop_value)
1100 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1102 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
1103 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
1104 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
1109 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1110 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1113 /// Parse the argument to the -ftest-module-file-extension
1114 /// command-line argument.
1116 /// \returns true on error, false on success.
1117 static bool parseTestModuleFileExtensionArg(StringRef Arg,
1118 std::string &BlockName,
1119 unsigned &MajorVersion,
1120 unsigned &MinorVersion,
1122 std::string &UserInfo) {
1123 SmallVector<StringRef, 5> Args;
1124 Arg.split(Args, ':', 5);
1125 if (Args.size() < 5)
1128 BlockName = Args[0];
1129 if (Args[1].getAsInteger(10, MajorVersion)) return true;
1130 if (Args[2].getAsInteger(10, MinorVersion)) return true;
1131 if (Args[3].getAsInteger(2, Hashed)) return true;
1132 if (Args.size() > 4)
1137 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1138 DiagnosticsEngine &Diags,
1139 bool &IsHeaderFile) {
1140 using namespace options;
1141 Opts.ProgramAction = frontend::ParseSyntaxOnly;
1142 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1143 switch (A->getOption().getID()) {
1145 llvm_unreachable("Invalid option in group!");
1147 Opts.ProgramAction = frontend::ASTDeclList; break;
1149 case OPT_ast_dump_all:
1150 case OPT_ast_dump_lookups:
1151 Opts.ProgramAction = frontend::ASTDump; break;
1153 Opts.ProgramAction = frontend::ASTPrint; break;
1155 Opts.ProgramAction = frontend::ASTView; break;
1156 case OPT_dump_raw_tokens:
1157 Opts.ProgramAction = frontend::DumpRawTokens; break;
1158 case OPT_dump_tokens:
1159 Opts.ProgramAction = frontend::DumpTokens; break;
1161 Opts.ProgramAction = frontend::EmitAssembly; break;
1162 case OPT_emit_llvm_bc:
1163 Opts.ProgramAction = frontend::EmitBC; break;
1165 Opts.ProgramAction = frontend::EmitHTML; break;
1167 Opts.ProgramAction = frontend::EmitLLVM; break;
1168 case OPT_emit_llvm_only:
1169 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1170 case OPT_emit_codegen_only:
1171 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1173 Opts.ProgramAction = frontend::EmitObj; break;
1175 Opts.FixItSuffix = A->getValue();
1178 Opts.ProgramAction = frontend::FixIt; break;
1179 case OPT_emit_module:
1180 Opts.ProgramAction = frontend::GenerateModule; break;
1181 case OPT_emit_module_interface:
1182 Opts.ProgramAction = frontend::GenerateModuleInterface; break;
1184 Opts.ProgramAction = frontend::GeneratePCH; break;
1186 Opts.ProgramAction = frontend::GeneratePTH; break;
1188 Opts.ProgramAction = frontend::InitOnly; break;
1189 case OPT_fsyntax_only:
1190 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1191 case OPT_module_file_info:
1192 Opts.ProgramAction = frontend::ModuleFileInfo; break;
1193 case OPT_verify_pch:
1194 Opts.ProgramAction = frontend::VerifyPCH; break;
1195 case OPT_print_decl_contexts:
1196 Opts.ProgramAction = frontend::PrintDeclContext; break;
1197 case OPT_print_preamble:
1198 Opts.ProgramAction = frontend::PrintPreamble; break;
1200 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1201 case OPT_rewrite_macros:
1202 Opts.ProgramAction = frontend::RewriteMacros; break;
1203 case OPT_rewrite_objc:
1204 Opts.ProgramAction = frontend::RewriteObjC; break;
1205 case OPT_rewrite_test:
1206 Opts.ProgramAction = frontend::RewriteTest; break;
1208 Opts.ProgramAction = frontend::RunAnalysis; break;
1210 Opts.ProgramAction = frontend::MigrateSource; break;
1212 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1216 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1217 Opts.Plugins.emplace_back(A->getValue(0));
1218 Opts.ProgramAction = frontend::PluginAction;
1219 Opts.ActionName = A->getValue();
1221 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1222 for (const Arg *AA : Args.filtered(OPT_plugin_arg))
1223 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1));
1225 for (const std::string &Arg :
1226 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) {
1227 std::string BlockName;
1228 unsigned MajorVersion;
1229 unsigned MinorVersion;
1231 std::string UserInfo;
1232 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion,
1233 MinorVersion, Hashed, UserInfo)) {
1234 Diags.Report(diag::err_test_module_file_extension_format) << Arg;
1239 // Add the testing module file extension.
1240 Opts.ModuleFileExtensions.push_back(
1241 std::make_shared<TestModuleFileExtension>(
1242 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo));
1245 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1246 Opts.CodeCompletionAt =
1247 ParsedSourceLocation::FromString(A->getValue());
1248 if (Opts.CodeCompletionAt.FileName.empty())
1249 Diags.Report(diag::err_drv_invalid_value)
1250 << A->getAsString(Args) << A->getValue();
1252 Opts.DisableFree = Args.hasArg(OPT_disable_free);
1254 Opts.OutputFile = Args.getLastArgValue(OPT_o);
1255 Opts.Plugins = Args.getAllArgValues(OPT_load);
1256 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1257 Opts.ShowHelp = Args.hasArg(OPT_help);
1258 Opts.ShowStats = Args.hasArg(OPT_print_stats);
1259 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1260 Opts.ShowVersion = Args.hasArg(OPT_version);
1261 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1262 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1263 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1264 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
1265 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
1266 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
1267 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
1268 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all);
1269 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
1270 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
1271 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
1272 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
1273 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
1274 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
1275 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ);
1276 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files);
1277 Opts.IncludeTimestamps = !Args.hasArg(OPT_fno_pch_timestamp);
1279 Opts.CodeCompleteOpts.IncludeMacros
1280 = Args.hasArg(OPT_code_completion_macros);
1281 Opts.CodeCompleteOpts.IncludeCodePatterns
1282 = Args.hasArg(OPT_code_completion_patterns);
1283 Opts.CodeCompleteOpts.IncludeGlobals
1284 = !Args.hasArg(OPT_no_code_completion_globals);
1285 Opts.CodeCompleteOpts.IncludeBriefComments
1286 = Args.hasArg(OPT_code_completion_brief_comments);
1288 Opts.OverrideRecordLayoutsFile
1289 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
1291 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple));
1292 Opts.FindPchSource = Args.getLastArgValue(OPT_find_pch_source_EQ);
1293 Opts.StatsFile = Args.getLastArgValue(OPT_stats_file);
1295 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1297 OPT_arcmt_migrate)) {
1298 switch (A->getOption().getID()) {
1300 llvm_unreachable("missed a case");
1301 case OPT_arcmt_check:
1302 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1304 case OPT_arcmt_modify:
1305 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1307 case OPT_arcmt_migrate:
1308 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1312 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
1313 Opts.ARCMTMigrateReportOut
1314 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1315 Opts.ARCMTMigrateEmitARCErrors
1316 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1318 if (Args.hasArg(OPT_objcmt_migrate_literals))
1319 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
1320 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
1321 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
1322 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
1323 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
1324 if (Args.hasArg(OPT_objcmt_migrate_property))
1325 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
1326 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
1327 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
1328 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
1329 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
1330 if (Args.hasArg(OPT_objcmt_migrate_annotation))
1331 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
1332 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
1333 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
1334 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
1335 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
1336 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
1337 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
1338 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
1339 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
1340 if (Args.hasArg(OPT_objcmt_atomic_property))
1341 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
1342 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
1343 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
1344 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
1345 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
1346 if (Args.hasArg(OPT_objcmt_migrate_all))
1347 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
1349 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
1351 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
1352 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
1353 Diags.Report(diag::err_drv_argument_not_allowed_with)
1354 << "ARC migration" << "ObjC migration";
1357 InputKind DashX(InputKind::Unknown);
1358 if (const Arg *A = Args.getLastArg(OPT_x)) {
1359 StringRef XValue = A->getValue();
1361 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'.
1362 // FIXME: Supporting '<lang>-header-cpp-output' would be useful.
1363 bool Preprocessed = XValue.consume_back("-cpp-output");
1364 bool ModuleMap = XValue.consume_back("-module-map");
1366 !Preprocessed && !ModuleMap && XValue.consume_back("-header");
1368 // Principal languages.
1369 DashX = llvm::StringSwitch<InputKind>(XValue)
1370 .Case("c", InputKind::C)
1371 .Case("cl", InputKind::OpenCL)
1372 .Case("cuda", InputKind::CUDA)
1373 .Case("c++", InputKind::CXX)
1374 .Case("objective-c", InputKind::ObjC)
1375 .Case("objective-c++", InputKind::ObjCXX)
1376 .Case("renderscript", InputKind::RenderScript)
1377 .Default(InputKind::Unknown);
1379 // "objc[++]-cpp-output" is an acceptable synonym for
1380 // "objective-c[++]-cpp-output".
1381 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap)
1382 DashX = llvm::StringSwitch<InputKind>(XValue)
1383 .Case("objc", InputKind::ObjC)
1384 .Case("objc++", InputKind::ObjCXX)
1385 .Default(InputKind::Unknown);
1387 // Some special cases cannot be combined with suffixes.
1388 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile)
1389 DashX = llvm::StringSwitch<InputKind>(XValue)
1390 .Case("cpp-output", InputKind(InputKind::C).getPreprocessed())
1391 .Case("assembler-with-cpp", InputKind::Asm)
1392 .Cases("ast", "pcm",
1393 InputKind(InputKind::Unknown, InputKind::Precompiled))
1394 .Case("ir", InputKind::LLVM_IR)
1395 .Default(InputKind::Unknown);
1397 if (DashX.isUnknown())
1398 Diags.Report(diag::err_drv_invalid_value)
1399 << A->getAsString(Args) << A->getValue();
1402 DashX = DashX.getPreprocessed();
1404 DashX = DashX.withFormat(InputKind::ModuleMap);
1407 // '-' is the default input if none is given.
1408 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1409 Opts.Inputs.clear();
1411 Inputs.push_back("-");
1412 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1413 InputKind IK = DashX;
1414 if (IK.isUnknown()) {
1415 IK = FrontendOptions::getInputKindForExtension(
1416 StringRef(Inputs[i]).rsplit('.').second);
1417 // FIXME: Warn on this?
1420 // FIXME: Remove this hack.
1425 // The -emit-module action implicitly takes a module map.
1426 if (Opts.ProgramAction == frontend::GenerateModule &&
1427 IK.getFormat() == InputKind::Source)
1428 IK = IK.withFormat(InputKind::ModuleMap);
1430 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK);
1436 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1438 std::string ClangExecutable =
1439 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1440 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
1442 // Compute the path to the resource directory.
1443 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
1444 SmallString<128> P(Dir);
1445 if (ClangResourceDir != "")
1446 llvm::sys::path::append(P, ClangResourceDir);
1448 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX,
1449 "clang", CLANG_VERSION_STRING);
1454 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args,
1455 const std::string &WorkingDir) {
1456 using namespace options;
1457 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1458 Opts.Verbose = Args.hasArg(OPT_v);
1459 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1460 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1461 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1462 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1463 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1464 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1466 // Canonicalize -fmodules-cache-path before storing it.
1467 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path));
1468 if (!(P.empty() || llvm::sys::path::is_absolute(P))) {
1469 if (WorkingDir.empty())
1470 llvm::sys::fs::make_absolute(P);
1472 llvm::sys::fs::make_absolute(WorkingDir, P);
1474 llvm::sys::path::remove_dots(P);
1475 Opts.ModuleCachePath = P.str();
1477 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
1478 for (const Arg *A : Args.filtered(OPT_fprebuilt_module_path))
1479 Opts.AddPrebuiltModulePath(A->getValue());
1480 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1481 Opts.ModulesHashContent = Args.hasArg(OPT_fmodules_hash_content);
1482 Opts.ModulesValidateDiagnosticOptions =
1483 !Args.hasArg(OPT_fmodules_disable_diagnostic_validation);
1484 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps);
1485 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
1486 Opts.ModuleCachePruneInterval =
1487 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
1488 Opts.ModuleCachePruneAfter =
1489 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
1490 Opts.ModulesValidateOncePerBuildSession =
1491 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
1492 Opts.BuildSessionTimestamp =
1493 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
1494 Opts.ModulesValidateSystemHeaders =
1495 Args.hasArg(OPT_fmodules_validate_system_headers);
1496 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ))
1497 Opts.ModuleFormat = A->getValue();
1499 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) {
1500 StringRef MacroDef = A->getValue();
1501 Opts.ModulesIgnoreMacros.insert(
1502 llvm::CachedHashString(MacroDef.split('=').first));
1505 // Add -I..., -F..., and -index-header-map options in order.
1506 bool IsIndexHeaderMap = false;
1507 bool IsSysrootSpecified =
1508 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot);
1509 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) {
1510 if (A->getOption().matches(OPT_index_header_map)) {
1511 // -index-header-map applies to the next -I or -F.
1512 IsIndexHeaderMap = true;
1516 frontend::IncludeDirGroup Group =
1517 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled;
1519 bool IsFramework = A->getOption().matches(OPT_F);
1520 std::string Path = A->getValue();
1522 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') {
1523 SmallString<32> Buffer;
1524 llvm::sys::path::append(Buffer, Opts.Sysroot,
1525 llvm::StringRef(A->getValue()).substr(1));
1526 Path = Buffer.str();
1529 Opts.AddPath(Path, Group, IsFramework,
1530 /*IgnoreSysroot*/ true);
1531 IsIndexHeaderMap = false;
1534 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1535 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1537 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) {
1538 if (A->getOption().matches(OPT_iprefix))
1539 Prefix = A->getValue();
1540 else if (A->getOption().matches(OPT_iwithprefix))
1541 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true);
1543 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true);
1546 for (const Arg *A : Args.filtered(OPT_idirafter))
1547 Opts.AddPath(A->getValue(), frontend::After, false, true);
1548 for (const Arg *A : Args.filtered(OPT_iquote))
1549 Opts.AddPath(A->getValue(), frontend::Quoted, false, true);
1550 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot))
1551 Opts.AddPath(A->getValue(), frontend::System, false,
1552 !A->getOption().matches(OPT_iwithsysroot));
1553 for (const Arg *A : Args.filtered(OPT_iframework))
1554 Opts.AddPath(A->getValue(), frontend::System, true, true);
1555 for (const Arg *A : Args.filtered(OPT_iframeworkwithsysroot))
1556 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true,
1557 /*IgnoreSysRoot=*/false);
1559 // Add the paths for the various language specific isystem flags.
1560 for (const Arg *A : Args.filtered(OPT_c_isystem))
1561 Opts.AddPath(A->getValue(), frontend::CSystem, false, true);
1562 for (const Arg *A : Args.filtered(OPT_cxx_isystem))
1563 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true);
1564 for (const Arg *A : Args.filtered(OPT_objc_isystem))
1565 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true);
1566 for (const Arg *A : Args.filtered(OPT_objcxx_isystem))
1567 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true);
1569 // Add the internal paths from a driver that detects standard include paths.
1571 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) {
1572 frontend::IncludeDirGroup Group = frontend::System;
1573 if (A->getOption().matches(OPT_internal_externc_isystem))
1574 Group = frontend::ExternCSystem;
1575 Opts.AddPath(A->getValue(), Group, false, true);
1578 // Add the path prefixes which are implicitly treated as being system headers.
1580 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix))
1581 Opts.AddSystemHeaderPrefix(
1582 A->getValue(), A->getOption().matches(OPT_system_header_prefix));
1584 for (const Arg *A : Args.filtered(OPT_ivfsoverlay))
1585 Opts.AddVFSOverlayFile(A->getValue());
1588 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1589 const llvm::Triple &T,
1590 PreprocessorOptions &PPOpts,
1591 LangStandard::Kind LangStd) {
1592 // Set some properties which depend solely on the input kind; it would be nice
1593 // to move these to the language standard, and have the driver resolve the
1594 // input kind + language standard.
1596 // FIXME: Perhaps a better model would be for a single source file to have
1597 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std)
1598 // simultaneously active?
1599 if (IK.getLanguage() == InputKind::Asm) {
1600 Opts.AsmPreprocessor = 1;
1601 } else if (IK.isObjectiveC()) {
1602 Opts.ObjC1 = Opts.ObjC2 = 1;
1605 if (LangStd == LangStandard::lang_unspecified) {
1606 // Based on the base language, pick one.
1607 switch (IK.getLanguage()) {
1608 case InputKind::Unknown:
1609 case InputKind::LLVM_IR:
1610 llvm_unreachable("Invalid input kind!");
1611 case InputKind::OpenCL:
1612 LangStd = LangStandard::lang_opencl10;
1614 case InputKind::CUDA:
1615 LangStd = LangStandard::lang_cuda;
1617 case InputKind::Asm:
1619 // The PS4 uses C99 as the default C standard.
1621 LangStd = LangStandard::lang_gnu99;
1623 LangStd = LangStandard::lang_gnu11;
1625 case InputKind::ObjC:
1626 LangStd = LangStandard::lang_gnu11;
1628 case InputKind::CXX:
1629 case InputKind::ObjCXX:
1630 // The PS4 uses C++11 as the default C++ standard.
1632 LangStd = LangStandard::lang_gnucxx11;
1634 LangStd = LangStandard::lang_gnucxx98;
1636 case InputKind::RenderScript:
1637 LangStd = LangStandard::lang_c99;
1642 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1643 Opts.LineComment = Std.hasLineComments();
1644 Opts.C99 = Std.isC99();
1645 Opts.C11 = Std.isC11();
1646 Opts.CPlusPlus = Std.isCPlusPlus();
1647 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1648 Opts.CPlusPlus14 = Std.isCPlusPlus14();
1649 Opts.CPlusPlus1z = Std.isCPlusPlus1z();
1650 Opts.Digraphs = Std.hasDigraphs();
1651 Opts.GNUMode = Std.isGNUMode();
1652 Opts.GNUInline = !Opts.C99 && !Opts.CPlusPlus;
1653 Opts.HexFloats = Std.hasHexFloats();
1654 Opts.ImplicitInt = Std.hasImplicitInt();
1656 // Set OpenCL Version.
1657 Opts.OpenCL = Std.isOpenCL();
1658 if (LangStd == LangStandard::lang_opencl10)
1659 Opts.OpenCLVersion = 100;
1660 else if (LangStd == LangStandard::lang_opencl11)
1661 Opts.OpenCLVersion = 110;
1662 else if (LangStd == LangStandard::lang_opencl12)
1663 Opts.OpenCLVersion = 120;
1664 else if (LangStd == LangStandard::lang_opencl20)
1665 Opts.OpenCLVersion = 200;
1667 // OpenCL has some additional defaults.
1671 Opts.LaxVectorConversions = 0;
1672 Opts.setDefaultFPContractMode(LangOptions::FPC_On);
1673 Opts.NativeHalfType = 1;
1674 Opts.NativeHalfArgsAndReturns = 1;
1675 // Include default header file for OpenCL.
1676 if (Opts.IncludeDefaultHeader) {
1677 PPOpts.Includes.push_back("opencl-c.h");
1681 Opts.CUDA = IK.getLanguage() == InputKind::CUDA;
1683 // Set default FP_CONTRACT to FAST.
1684 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast);
1686 Opts.RenderScript = IK.getLanguage() == InputKind::RenderScript;
1687 if (Opts.RenderScript) {
1688 Opts.NativeHalfType = 1;
1689 Opts.NativeHalfArgsAndReturns = 1;
1692 // OpenCL and C++ both have bool, true, false keywords.
1693 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1695 // OpenCL has half keyword
1696 Opts.Half = Opts.OpenCL;
1698 // C++ has wchar_t keyword.
1699 Opts.WChar = Opts.CPlusPlus;
1701 Opts.GNUKeywords = Opts.GNUMode;
1702 Opts.CXXOperatorNames = Opts.CPlusPlus;
1704 Opts.AlignedAllocation = Opts.CPlusPlus1z;
1706 Opts.DollarIdents = !Opts.AsmPreprocessor;
1709 /// Attempt to parse a visibility value out of the given argument.
1710 static Visibility parseVisibility(Arg *arg, ArgList &args,
1711 DiagnosticsEngine &diags) {
1712 StringRef value = arg->getValue();
1713 if (value == "default") {
1714 return DefaultVisibility;
1715 } else if (value == "hidden" || value == "internal") {
1716 return HiddenVisibility;
1717 } else if (value == "protected") {
1718 // FIXME: diagnose if target does not support protected visibility
1719 return ProtectedVisibility;
1722 diags.Report(diag::err_drv_invalid_value)
1723 << arg->getAsString(args) << value;
1724 return DefaultVisibility;
1727 /// Check if input file kind and language standard are compatible.
1728 static bool IsInputCompatibleWithStandard(InputKind IK,
1729 const LangStandard &S) {
1730 switch (IK.getLanguage()) {
1731 case InputKind::Unknown:
1732 case InputKind::LLVM_IR:
1733 llvm_unreachable("should not parse language flags for this input");
1736 case InputKind::ObjC:
1737 case InputKind::RenderScript:
1738 return S.getLanguage() == InputKind::C;
1740 case InputKind::OpenCL:
1741 return S.getLanguage() == InputKind::OpenCL;
1743 case InputKind::CXX:
1744 case InputKind::ObjCXX:
1745 return S.getLanguage() == InputKind::CXX;
1747 case InputKind::CUDA:
1748 // FIXME: What -std= values should be permitted for CUDA compilations?
1749 return S.getLanguage() == InputKind::CUDA ||
1750 S.getLanguage() == InputKind::CXX;
1752 case InputKind::Asm:
1753 // Accept (and ignore) all -std= values.
1754 // FIXME: The -std= value is not ignored; it affects the tokenization
1755 // and preprocessing rules if we're preprocessing this asm input.
1759 llvm_unreachable("unexpected input language");
1762 /// Get language name for given input kind.
1763 static const StringRef GetInputKindName(InputKind IK) {
1764 switch (IK.getLanguage()) {
1767 case InputKind::ObjC:
1768 return "Objective-C";
1769 case InputKind::CXX:
1771 case InputKind::ObjCXX:
1772 return "Objective-C++";
1773 case InputKind::OpenCL:
1775 case InputKind::CUDA:
1777 case InputKind::RenderScript:
1778 return "RenderScript";
1780 case InputKind::Asm:
1782 case InputKind::LLVM_IR:
1785 case InputKind::Unknown:
1788 llvm_unreachable("unknown input language");
1791 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1792 const TargetOptions &TargetOpts,
1793 PreprocessorOptions &PPOpts,
1794 DiagnosticsEngine &Diags) {
1795 // FIXME: Cleanup per-file based stuff.
1796 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1797 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1798 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1799 #define LANGSTANDARD(id, name, lang, desc, features) \
1800 .Case(name, LangStandard::lang_##id)
1801 #define LANGSTANDARD_ALIAS(id, alias) \
1802 .Case(alias, LangStandard::lang_##id)
1803 #include "clang/Frontend/LangStandards.def"
1804 .Default(LangStandard::lang_unspecified);
1805 if (LangStd == LangStandard::lang_unspecified) {
1806 Diags.Report(diag::err_drv_invalid_value)
1807 << A->getAsString(Args) << A->getValue();
1808 // Report supported standards with short description.
1809 for (unsigned KindValue = 0;
1810 KindValue != LangStandard::lang_unspecified;
1812 const LangStandard &Std = LangStandard::getLangStandardForKind(
1813 static_cast<LangStandard::Kind>(KindValue));
1814 if (IsInputCompatibleWithStandard(IK, Std)) {
1815 auto Diag = Diags.Report(diag::note_drv_use_standard);
1816 Diag << Std.getName() << Std.getDescription();
1817 unsigned NumAliases = 0;
1818 #define LANGSTANDARD(id, name, lang, desc, features)
1819 #define LANGSTANDARD_ALIAS(id, alias) \
1820 if (KindValue == LangStandard::lang_##id) ++NumAliases;
1821 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
1822 #include "clang/Frontend/LangStandards.def"
1824 #define LANGSTANDARD(id, name, lang, desc, features)
1825 #define LANGSTANDARD_ALIAS(id, alias) \
1826 if (KindValue == LangStandard::lang_##id) Diag << alias;
1827 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
1828 #include "clang/Frontend/LangStandards.def"
1832 // Valid standard, check to make sure language and standard are
1834 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1835 if (!IsInputCompatibleWithStandard(IK, Std)) {
1836 Diags.Report(diag::err_drv_argument_not_allowed_with)
1837 << A->getAsString(Args) << GetInputKindName(IK);
1842 // -cl-std only applies for OpenCL language standards.
1843 // Override the -std option in this case.
1844 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1845 LangStandard::Kind OpenCLLangStd
1846 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1847 .Cases("cl", "CL", LangStandard::lang_opencl10)
1848 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11)
1849 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12)
1850 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20)
1851 .Default(LangStandard::lang_unspecified);
1853 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1854 Diags.Report(diag::err_drv_invalid_value)
1855 << A->getAsString(Args) << A->getValue();
1858 LangStd = OpenCLLangStd;
1861 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header);
1863 llvm::Triple T(TargetOpts.Triple);
1864 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd);
1866 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0.
1867 // This option should be deprecated for CL > 1.0 because
1868 // this option was added for compatibility with OpenCL 1.0.
1869 if (Args.getLastArg(OPT_cl_strict_aliasing)
1870 && Opts.OpenCLVersion > 100) {
1871 std::string VerSpec = llvm::to_string(Opts.OpenCLVersion / 100) +
1873 llvm::to_string((Opts.OpenCLVersion % 100) / 10);
1874 Diags.Report(diag::warn_option_invalid_ocl_version)
1875 << VerSpec << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args);
1878 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1879 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1880 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1881 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1882 // name, as it doesn't seem a useful distinction.
1883 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1886 if (Args.hasArg(OPT_fno_operator_names))
1887 Opts.CXXOperatorNames = 0;
1889 if (Args.hasArg(OPT_fcuda_is_device))
1890 Opts.CUDAIsDevice = 1;
1892 if (Args.hasArg(OPT_fcuda_allow_variadic_functions))
1893 Opts.CUDAAllowVariadicFunctions = 1;
1895 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr))
1896 Opts.CUDAHostDeviceConstexpr = 0;
1898 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero))
1899 Opts.CUDADeviceFlushDenormalsToZero = 1;
1901 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals))
1902 Opts.CUDADeviceApproxTranscendentals = 1;
1905 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1906 StringRef value = arg->getValue();
1907 if (Opts.ObjCRuntime.tryParse(value))
1908 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1911 if (Args.hasArg(OPT_fobjc_gc_only))
1912 Opts.setGC(LangOptions::GCOnly);
1913 else if (Args.hasArg(OPT_fobjc_gc))
1914 Opts.setGC(LangOptions::HybridGC);
1915 else if (Args.hasArg(OPT_fobjc_arc)) {
1916 Opts.ObjCAutoRefCount = 1;
1917 if (!Opts.ObjCRuntime.allowsARC())
1918 Diags.Report(diag::err_arc_unsupported_on_runtime);
1921 // ObjCWeakRuntime tracks whether the runtime supports __weak, not
1922 // whether the feature is actually enabled. This is predominantly
1923 // determined by -fobjc-runtime, but we allow it to be overridden
1924 // from the command line for testing purposes.
1925 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1926 Opts.ObjCWeakRuntime = 1;
1928 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak();
1930 // ObjCWeak determines whether __weak is actually enabled.
1931 // Note that we allow -fno-objc-weak to disable this even in ARC mode.
1932 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) {
1933 if (!weakArg->getOption().matches(OPT_fobjc_weak)) {
1934 assert(!Opts.ObjCWeak);
1935 } else if (Opts.getGC() != LangOptions::NonGC) {
1936 Diags.Report(diag::err_objc_weak_with_gc);
1937 } else if (!Opts.ObjCWeakRuntime) {
1938 Diags.Report(diag::err_objc_weak_unsupported);
1942 } else if (Opts.ObjCAutoRefCount) {
1943 Opts.ObjCWeak = Opts.ObjCWeakRuntime;
1946 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1947 Opts.ObjCInferRelatedResultType = 0;
1949 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
1950 Opts.ObjCSubscriptingLegacyRuntime =
1951 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
1954 if (Args.hasArg(OPT_fgnu89_inline)) {
1956 Diags.Report(diag::err_drv_argument_not_allowed_with)
1957 << "-fgnu89-inline" << GetInputKindName(IK);
1962 if (Args.hasArg(OPT_fapple_kext)) {
1963 if (!Opts.CPlusPlus)
1964 Diags.Report(diag::warn_c_kext);
1969 if (Args.hasArg(OPT_print_ivar_layout))
1970 Opts.ObjCGCBitmapPrint = 1;
1971 if (Args.hasArg(OPT_fno_constant_cfstrings))
1972 Opts.NoConstantCFStrings = 1;
1974 if (Args.hasArg(OPT_fzvector))
1977 if (Args.hasArg(OPT_pthread))
1978 Opts.POSIXThreads = 1;
1980 // The value-visibility mode defaults to "default".
1981 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
1982 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
1984 Opts.setValueVisibilityMode(DefaultVisibility);
1987 // The type-visibility mode defaults to the value-visibility mode.
1988 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
1989 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
1991 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
1994 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1995 Opts.InlineVisibilityHidden = 1;
1997 if (Args.hasArg(OPT_ftrapv)) {
1998 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1999 // Set the handler, if one is specified.
2000 Opts.OverflowHandler =
2001 Args.getLastArgValue(OPT_ftrapv_handler);
2003 else if (Args.hasArg(OPT_fwrapv))
2004 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
2006 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
2007 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
2008 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
2009 Opts.MSCompatibilityVersion = 0;
2010 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) {
2012 if (VT.tryParse(A->getValue()))
2013 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
2015 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 +
2016 VT.getMinor().getValueOr(0) * 100000 +
2017 VT.getSubminor().getValueOr(0);
2020 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
2021 // is specified, or -std is set to a conforming mode.
2022 // Trigraphs are disabled by default in c++1z onwards.
2023 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z;
2025 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
2027 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
2028 OPT_fno_dollars_in_identifiers,
2030 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
2031 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
2032 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
2033 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
2034 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
2036 if (Args.hasArg(OPT_fno_lax_vector_conversions))
2037 Opts.LaxVectorConversions = 0;
2038 if (Args.hasArg(OPT_fno_threadsafe_statics))
2039 Opts.ThreadsafeStatics = 0;
2040 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
2041 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
2042 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
2043 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
2044 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind);
2045 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
2047 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti);
2048 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
2049 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL
2050 && Opts.OpenCLVersion >= 200);
2051 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
2052 Opts.CoroutinesTS = Args.hasArg(OPT_fcoroutines_ts);
2053 Opts.ModulesTS = Args.hasArg(OPT_fmodules_ts);
2054 Opts.Modules = Args.hasArg(OPT_fmodules) || Opts.ModulesTS;
2055 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
2056 Opts.ModulesDeclUse =
2057 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
2058 Opts.ModulesLocalVisibility =
2059 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS;
2060 Opts.ModulesCodegen = Args.hasArg(OPT_fmodules_codegen);
2061 Opts.ModulesDebugInfo = Args.hasArg(OPT_fmodules_debuginfo);
2062 Opts.ModulesSearchAll = Opts.Modules &&
2063 !Args.hasArg(OPT_fno_modules_search_all) &&
2064 Args.hasArg(OPT_fmodules_search_all);
2065 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
2066 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules);
2067 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
2068 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
2069 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
2070 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
2071 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
2072 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
2073 if (!Opts.NoBuiltin)
2074 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
2075 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
2076 Opts.RelaxedTemplateTemplateArgs =
2077 Args.hasArg(OPT_frelaxed_template_template_args);
2078 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation);
2079 Opts.AlignedAllocation =
2080 Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation,
2081 Opts.AlignedAllocation);
2082 Opts.NewAlignOverride =
2083 getLastArgIntValue(Args, OPT_fnew_alignment_EQ, 0, Diags);
2084 if (Opts.NewAlignOverride && !llvm::isPowerOf2_32(Opts.NewAlignOverride)) {
2085 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ);
2086 Diags.Report(diag::err_fe_invalid_alignment) << A->getAsString(Args)
2088 Opts.NewAlignOverride = 0;
2090 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts);
2091 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
2092 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
2093 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
2094 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
2095 Opts.InstantiationDepth =
2096 getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags);
2098 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
2099 Opts.ConstexprCallDepth =
2100 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
2101 Opts.ConstexprStepLimit =
2102 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
2103 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
2104 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
2105 Opts.NumLargeByValueCopy =
2106 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
2107 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
2108 Opts.ObjCConstantStringClass =
2109 Args.getLastArgValue(OPT_fconstant_string_class);
2110 Opts.ObjCDefaultSynthProperties =
2111 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
2112 Opts.EncodeExtendedBlockSig =
2113 Args.hasArg(OPT_fencode_extended_block_signature);
2114 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
2115 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
2116 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
2117 Opts.AlignDouble = Args.hasArg(OPT_malign_double);
2118 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2119 Opts.PIE = Args.hasArg(OPT_pic_is_pie);
2120 Opts.Static = Args.hasArg(OPT_static_define);
2121 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
2122 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
2123 || Args.hasArg(OPT_fdump_record_layouts);
2124 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
2125 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
2126 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
2127 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
2128 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
2129 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
2130 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
2131 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
2132 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
2133 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
2134 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
2135 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
2136 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name_EQ);
2137 Opts.AppExt = Args.hasArg(OPT_fapplication_extension);
2138 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature);
2139 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end());
2140 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type);
2141 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns);
2142 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns
2144 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns)
2145 | Opts.NativeHalfArgsAndReturns;
2146 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm);
2148 // __declspec is enabled by default for the PS4 by the driver, and also
2149 // enabled for Microsoft Extensions or Borland Extensions, here.
2151 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a
2152 // CUDA extension. However, it is required for supporting
2153 // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has
2154 // been rewritten in terms of something more generic, remove the Opts.CUDA
2156 Opts.DeclSpecKeyword =
2157 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec,
2158 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA));
2160 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
2161 switch (llvm::StringSwitch<unsigned>(A->getValue())
2162 .Case("target", LangOptions::ASMM_Target)
2163 .Case("no", LangOptions::ASMM_Off)
2164 .Case("yes", LangOptions::ASMM_On)
2167 Diags.Report(diag::err_drv_invalid_value)
2168 << "-faddress-space-map-mangling=" << A->getValue();
2170 case LangOptions::ASMM_Target:
2171 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
2173 case LangOptions::ASMM_On:
2174 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
2176 case LangOptions::ASMM_Off:
2177 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
2182 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
2183 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
2184 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
2187 LangOptions::PPTMK_FullGeneralitySingleInheritance)
2189 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
2191 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
2192 .Default(LangOptions::PPTMK_BestCase);
2193 if (InheritanceModel == LangOptions::PPTMK_BestCase)
2194 Diags.Report(diag::err_drv_invalid_value)
2195 << "-fms-memptr-rep=" << A->getValue();
2197 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
2200 // Check for MS default calling conventions being specified.
2201 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) {
2202 LangOptions::DefaultCallingConvention DefaultCC =
2203 llvm::StringSwitch<LangOptions::DefaultCallingConvention>(
2205 .Case("cdecl", LangOptions::DCC_CDecl)
2206 .Case("fastcall", LangOptions::DCC_FastCall)
2207 .Case("stdcall", LangOptions::DCC_StdCall)
2208 .Case("vectorcall", LangOptions::DCC_VectorCall)
2209 .Default(LangOptions::DCC_None);
2210 if (DefaultCC == LangOptions::DCC_None)
2211 Diags.Report(diag::err_drv_invalid_value)
2212 << "-fdefault-calling-conv=" << A->getValue();
2214 llvm::Triple T(TargetOpts.Triple);
2215 llvm::Triple::ArchType Arch = T.getArch();
2216 bool emitError = (DefaultCC == LangOptions::DCC_FastCall ||
2217 DefaultCC == LangOptions::DCC_StdCall) &&
2218 Arch != llvm::Triple::x86;
2219 emitError |= DefaultCC == LangOptions::DCC_VectorCall &&
2220 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64);
2222 Diags.Report(diag::err_drv_argument_not_allowed_with)
2223 << A->getSpelling() << T.getTriple();
2225 Opts.setDefaultCallingConv(DefaultCC);
2229 if (Arg *A = Args.getLastArg(OPT_mrtd)) {
2230 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None)
2231 Diags.Report(diag::err_drv_argument_not_allowed_with)
2232 << A->getSpelling() << "-fdefault-calling-conv";
2234 llvm::Triple T(TargetOpts.Triple);
2235 if (T.getArch() != llvm::Triple::x86)
2236 Diags.Report(diag::err_drv_argument_not_allowed_with)
2237 << A->getSpelling() << T.getTriple();
2239 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall);
2243 // Check if -fopenmp is specified.
2244 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0;
2246 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls);
2247 Opts.OpenMPIsDevice =
2248 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device);
2252 getLastArgIntValue(Args, OPT_fopenmp_version_EQ, Opts.OpenMP, Diags);
2254 Opts.OpenMP = Version;
2255 // Provide diagnostic when a given target is not expected to be an OpenMP
2257 if (!Opts.OpenMPIsDevice) {
2258 switch (T.getArch()) {
2261 // Add unsupported host targets here:
2262 case llvm::Triple::nvptx:
2263 case llvm::Triple::nvptx64:
2264 Diags.Report(clang::diag::err_drv_omp_host_target_not_supported)
2265 << TargetOpts.Triple;
2271 // Get the OpenMP target triples if any.
2272 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) {
2274 for (unsigned i = 0; i < A->getNumValues(); ++i) {
2275 llvm::Triple TT(A->getValue(i));
2277 if (TT.getArch() == llvm::Triple::UnknownArch)
2278 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i);
2280 Opts.OMPTargetTriples.push_back(TT);
2284 // Get OpenMP host file path if any and report if a non existent file is
2286 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) {
2287 Opts.OMPHostIRFile = A->getValue();
2288 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile))
2289 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found)
2290 << Opts.OMPHostIRFile;
2293 // Record whether the __DEPRECATED define was requested.
2294 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
2295 OPT_fno_deprecated_macro,
2298 // FIXME: Eliminate this dependency.
2299 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
2300 OptSize = getOptimizationLevelSize(Args);
2301 Opts.Optimize = Opt != 0;
2302 Opts.OptimizeSize = OptSize != 0;
2304 // This is the __NO_INLINE__ define, which just depends on things like the
2305 // optimization level and -fno-inline, not actually whether the backend has
2306 // inlining enabled.
2307 Opts.NoInlineDefine = !Opts.Optimize;
2308 if (Arg *InlineArg = Args.getLastArg(
2309 options::OPT_finline_functions, options::OPT_finline_hint_functions,
2310 options::OPT_fno_inline_functions, options::OPT_fno_inline))
2311 if (InlineArg->getOption().matches(options::OPT_fno_inline))
2312 Opts.NoInlineDefine = true;
2314 Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
2315 Args.hasArg(OPT_cl_fast_relaxed_math);
2316 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
2317 Args.hasArg(OPT_cl_finite_math_only) ||
2318 Args.hasArg(OPT_cl_fast_relaxed_math);
2319 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
2320 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
2321 Args.hasArg(OPT_cl_fast_relaxed_math);
2323 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
2324 StringRef Val = A->getValue();
2326 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast);
2327 else if (Val == "on")
2328 Opts.setDefaultFPContractMode(LangOptions::FPC_On);
2329 else if (Val == "off")
2330 Opts.setDefaultFPContractMode(LangOptions::FPC_Off);
2332 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
2335 Opts.RetainCommentsFromSystemHeaders =
2336 Args.hasArg(OPT_fretain_comments_from_system_headers);
2338 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
2341 Diags.Report(diag::err_drv_invalid_value)
2342 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
2344 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
2345 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
2346 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
2347 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
2350 // Parse -fsanitize= arguments.
2351 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2352 Diags, Opts.Sanitize);
2353 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
2354 Opts.SanitizeAddressFieldPadding =
2355 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
2356 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist);
2358 // -fxray-instrument
2359 Opts.XRayInstrument =
2360 Args.hasFlag(OPT_fxray_instrument, OPT_fnoxray_instrument, false);
2362 // -fxray-{always,never}-instrument= filenames.
2363 Opts.XRayAlwaysInstrumentFiles =
2364 Args.getAllArgValues(OPT_fxray_always_instrument);
2365 Opts.XRayNeverInstrumentFiles =
2366 Args.getAllArgValues(OPT_fxray_never_instrument);
2368 // -fallow-editor-placeholders
2369 Opts.AllowEditorPlaceholders = Args.hasArg(OPT_fallow_editor_placeholders);
2372 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
2373 FileManager &FileMgr,
2374 DiagnosticsEngine &Diags) {
2375 using namespace options;
2376 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
2377 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
2378 if (const Arg *A = Args.getLastArg(OPT_token_cache))
2379 Opts.TokenCache = A->getValue();
2381 Opts.TokenCache = Opts.ImplicitPTHInclude;
2382 Opts.UsePredefines = !Args.hasArg(OPT_undef);
2383 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
2384 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
2385 Opts.AllowPCHWithCompilerErrors = Args.hasArg(OPT_fallow_pch_with_errors);
2387 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
2388 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl))
2389 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
2391 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
2392 StringRef Value(A->getValue());
2393 size_t Comma = Value.find(',');
2395 unsigned EndOfLine = 0;
2397 if (Comma == StringRef::npos ||
2398 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
2399 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
2400 Diags.Report(diag::err_drv_preamble_format);
2402 Opts.PrecompiledPreambleBytes.first = Bytes;
2403 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
2407 // Add macros from the command line.
2408 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) {
2409 if (A->getOption().matches(OPT_D))
2410 Opts.addMacroDef(A->getValue());
2412 Opts.addMacroUndef(A->getValue());
2415 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
2417 // Add the ordered list of -includes.
2418 for (const Arg *A : Args.filtered(OPT_include))
2419 Opts.Includes.emplace_back(A->getValue());
2421 for (const Arg *A : Args.filtered(OPT_chain_include))
2422 Opts.ChainedIncludes.emplace_back(A->getValue());
2424 for (const Arg *A : Args.filtered(OPT_remap_file)) {
2425 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';');
2427 if (Split.second.empty()) {
2428 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
2432 Opts.addRemappedFile(Split.first, Split.second);
2435 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
2436 StringRef Name = A->getValue();
2437 unsigned Library = llvm::StringSwitch<unsigned>(Name)
2438 .Case("libc++", ARCXX_libcxx)
2439 .Case("libstdc++", ARCXX_libstdcxx)
2440 .Case("none", ARCXX_nolib)
2443 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
2445 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
2449 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
2451 frontend::ActionKind Action) {
2452 using namespace options;
2455 case frontend::ASTDeclList:
2456 case frontend::ASTDump:
2457 case frontend::ASTPrint:
2458 case frontend::ASTView:
2459 case frontend::EmitAssembly:
2460 case frontend::EmitBC:
2461 case frontend::EmitHTML:
2462 case frontend::EmitLLVM:
2463 case frontend::EmitLLVMOnly:
2464 case frontend::EmitCodeGenOnly:
2465 case frontend::EmitObj:
2466 case frontend::FixIt:
2467 case frontend::GenerateModule:
2468 case frontend::GenerateModuleInterface:
2469 case frontend::GeneratePCH:
2470 case frontend::GeneratePTH:
2471 case frontend::ParseSyntaxOnly:
2472 case frontend::ModuleFileInfo:
2473 case frontend::VerifyPCH:
2474 case frontend::PluginAction:
2475 case frontend::PrintDeclContext:
2476 case frontend::RewriteObjC:
2477 case frontend::RewriteTest:
2478 case frontend::RunAnalysis:
2479 case frontend::MigrateSource:
2483 case frontend::DumpRawTokens:
2484 case frontend::DumpTokens:
2485 case frontend::InitOnly:
2486 case frontend::PrintPreamble:
2487 case frontend::PrintPreprocessedInput:
2488 case frontend::RewriteMacros:
2489 case frontend::RunPreprocessorOnly:
2490 Opts.ShowCPP = !Args.hasArg(OPT_dM);
2494 Opts.ShowComments = Args.hasArg(OPT_C);
2495 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
2496 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
2497 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
2498 Opts.ShowIncludeDirectives = Args.hasArg(OPT_dI);
2499 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
2500 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives);
2503 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args,
2504 DiagnosticsEngine &Diags) {
2505 using namespace options;
2506 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
2507 if (Arg *A = Args.getLastArg(OPT_meabi)) {
2508 StringRef Value = A->getValue();
2509 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value)
2510 .Case("default", llvm::EABI::Default)
2511 .Case("4", llvm::EABI::EABI4)
2512 .Case("5", llvm::EABI::EABI5)
2513 .Case("gnu", llvm::EABI::GNU)
2514 .Default(llvm::EABI::Unknown);
2515 if (EABIVersion == llvm::EABI::Unknown)
2516 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
2519 Opts.EABIVersion = Value;
2521 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
2522 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
2523 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
2524 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
2525 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
2526 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ);
2527 // Use the default target triple if unspecified.
2528 if (Opts.Triple.empty())
2529 Opts.Triple = llvm::sys::getDefaultTargetTriple();
2530 Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ);
2533 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
2534 const char *const *ArgBegin,
2535 const char *const *ArgEnd,
2536 DiagnosticsEngine &Diags) {
2537 bool Success = true;
2539 // Parse the arguments.
2540 std::unique_ptr<OptTable> Opts = createDriverOptTable();
2541 const unsigned IncludedFlagsBitmask = options::CC1Option;
2542 unsigned MissingArgIndex, MissingArgCount;
2544 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex,
2545 MissingArgCount, IncludedFlagsBitmask);
2546 LangOptions &LangOpts = *Res.getLangOpts();
2548 // Check for missing argument error.
2549 if (MissingArgCount) {
2550 Diags.Report(diag::err_drv_missing_argument)
2551 << Args.getArgString(MissingArgIndex) << MissingArgCount;
2555 // Issue errors on unknown arguments.
2556 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) {
2557 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args);
2561 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags);
2562 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args);
2563 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args);
2565 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags,
2566 false /*DefaultDiagColor*/, false /*DefaultShowOpt*/);
2567 ParseCommentArgs(LangOpts.CommentOpts, Args);
2568 ParseFileSystemArgs(Res.getFileSystemOpts(), Args);
2569 // FIXME: We shouldn't have to pass the DashX option around here
2570 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags,
2571 LangOpts.IsHeaderFile);
2572 ParseTargetArgs(Res.getTargetOpts(), Args, Diags);
2573 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags,
2574 Res.getTargetOpts());
2575 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args,
2576 Res.getFileSystemOpts().WorkingDir);
2577 if (DashX.getFormat() == InputKind::Precompiled ||
2578 DashX.getLanguage() == InputKind::LLVM_IR) {
2579 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the
2580 // PassManager in BackendUtil.cpp. They need to be initializd no matter
2581 // what the input type is.
2582 if (Args.hasArg(OPT_fobjc_arc))
2583 LangOpts.ObjCAutoRefCount = 1;
2584 // PIClevel and PIELevel are needed during code generation and this should be
2585 // set regardless of the input type.
2586 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2587 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie);
2588 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2589 Diags, LangOpts.Sanitize);
2591 // Other LangOpts are only initialzed when the input is not AST or LLVM IR.
2592 // FIXME: Should we really be calling this for an InputKind::Asm input?
2593 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(),
2594 Res.getPreprocessorOpts(), Diags);
2595 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2596 LangOpts.ObjCExceptions = 1;
2599 if (LangOpts.CUDA) {
2600 // During CUDA device-side compilation, the aux triple is the
2601 // triple used for host compilation.
2602 if (LangOpts.CUDAIsDevice)
2603 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
2606 // FIXME: Override value name discarding when asan or msan is used because the
2607 // backend passes depend on the name of the alloca in order to print out
2609 Res.getCodeGenOpts().DiscardValueNames &=
2610 !LangOpts.Sanitize.has(SanitizerKind::Address) &&
2611 !LangOpts.Sanitize.has(SanitizerKind::Memory);
2613 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
2614 // PCH file and find the original header name. Remove the need to do that in
2615 // ParsePreprocessorArgs and remove the FileManager
2616 // parameters from the function and the "FileManager.h" #include.
2617 FileManager FileMgr(Res.getFileSystemOpts());
2618 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags);
2619 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args,
2620 Res.getFrontendOpts().ProgramAction);
2622 // Turn on -Wspir-compat for SPIR target.
2623 llvm::Triple T(Res.getTargetOpts().Triple);
2624 auto Arch = T.getArch();
2625 if (Arch == llvm::Triple::spir || Arch == llvm::Triple::spir64) {
2626 Res.getDiagnosticOpts().Warnings.push_back("spir-compat");
2631 std::string CompilerInvocation::getModuleHash() const {
2632 // Note: For QoI reasons, the things we use as a hash here should all be
2633 // dumped via the -module-info flag.
2634 using llvm::hash_code;
2635 using llvm::hash_value;
2636 using llvm::hash_combine;
2638 // Start the signature with the compiler version.
2639 // FIXME: We'd rather use something more cryptographically sound than
2640 // CityHash, but this will do for now.
2641 hash_code code = hash_value(getClangFullRepositoryVersion());
2643 // Extend the signature with the language options
2644 #define LANGOPT(Name, Bits, Default, Description) \
2645 code = hash_combine(code, LangOpts->Name);
2646 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2647 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
2648 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
2649 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
2650 #include "clang/Basic/LangOptions.def"
2652 for (StringRef Feature : LangOpts->ModuleFeatures)
2653 code = hash_combine(code, Feature);
2655 // Extend the signature with the target options.
2656 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
2658 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
2659 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
2661 // Extend the signature with preprocessor options.
2662 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
2663 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
2664 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
2666 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator
2667 I = getPreprocessorOpts().Macros.begin(),
2668 IEnd = getPreprocessorOpts().Macros.end();
2670 // If we're supposed to ignore this macro for the purposes of modules,
2671 // don't put it into the hash.
2672 if (!hsOpts.ModulesIgnoreMacros.empty()) {
2673 // Check whether we're ignoring this macro.
2674 StringRef MacroDef = I->first;
2675 if (hsOpts.ModulesIgnoreMacros.count(
2676 llvm::CachedHashString(MacroDef.split('=').first)))
2680 code = hash_combine(code, I->first, I->second);
2683 // Extend the signature with the sysroot and other header search options.
2684 code = hash_combine(code, hsOpts.Sysroot,
2685 hsOpts.ModuleFormat,
2686 hsOpts.UseDebugInfo,
2687 hsOpts.UseBuiltinIncludes,
2688 hsOpts.UseStandardSystemIncludes,
2689 hsOpts.UseStandardCXXIncludes,
2691 hsOpts.ModulesValidateDiagnosticOptions);
2692 code = hash_combine(code, hsOpts.ResourceDir);
2694 // Extend the signature with the user build path.
2695 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
2697 // Extend the signature with the module file extensions.
2698 const FrontendOptions &frontendOpts = getFrontendOpts();
2699 for (const auto &ext : frontendOpts.ModuleFileExtensions) {
2700 code = ext->hashExtension(code);
2703 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
2708 template<typename IntTy>
2709 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
2711 DiagnosticsEngine *Diags) {
2712 IntTy Res = Default;
2713 if (Arg *A = Args.getLastArg(Id)) {
2714 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
2716 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
2724 // Declared in clang/Frontend/Utils.h.
2725 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
2726 DiagnosticsEngine *Diags) {
2727 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
2730 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
2732 DiagnosticsEngine *Diags) {
2733 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
2736 void BuryPointer(const void *Ptr) {
2737 // This function may be called only a small fixed amount of times per each
2738 // invocation, otherwise we do actually have a leak which we want to report.
2739 // If this function is called more than kGraveYardMaxSize times, the pointers
2740 // will not be properly buried and a leak detector will report a leak, which
2741 // is what we want in such case.
2742 static const size_t kGraveYardMaxSize = 16;
2743 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2744 static std::atomic<unsigned> GraveYardSize;
2745 unsigned Idx = GraveYardSize++;
2746 if (Idx >= kGraveYardMaxSize)
2748 GraveYard[Idx] = Ptr;
2751 IntrusiveRefCntPtr<vfs::FileSystem>
2752 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2753 DiagnosticsEngine &Diags) {
2754 return createVFSFromCompilerInvocation(CI, Diags, vfs::getRealFileSystem());
2757 IntrusiveRefCntPtr<vfs::FileSystem>
2758 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2759 DiagnosticsEngine &Diags,
2760 IntrusiveRefCntPtr<vfs::FileSystem> BaseFS) {
2761 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2764 IntrusiveRefCntPtr<vfs::OverlayFileSystem> Overlay(
2765 new vfs::OverlayFileSystem(BaseFS));
2766 // earlier vfs files are on the bottom
2767 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2768 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2769 BaseFS->getBufferForFile(File);
2771 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2772 return IntrusiveRefCntPtr<vfs::FileSystem>();
2775 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML(
2776 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File);
2778 Diags.Report(diag::err_invalid_vfs_overlay) << File;
2779 return IntrusiveRefCntPtr<vfs::FileSystem>();
2781 Overlay->pushOverlay(FS);
2785 } // end namespace clang