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 Opts.DebugPassManager =
480 Args.hasFlag(OPT_fdebug_pass_manager, OPT_fno_debug_pass_manager,
481 /* Default */ false);
483 if (Arg *A = Args.getLastArg(OPT_fveclib)) {
484 StringRef Name = A->getValue();
485 if (Name == "Accelerate")
486 Opts.setVecLib(CodeGenOptions::Accelerate);
487 else if (Name == "SVML")
488 Opts.setVecLib(CodeGenOptions::SVML);
489 else if (Name == "none")
490 Opts.setVecLib(CodeGenOptions::NoLibrary);
492 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
495 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) {
497 llvm::StringSwitch<unsigned>(A->getValue())
498 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly)
499 .Case("limited", codegenoptions::LimitedDebugInfo)
500 .Case("standalone", codegenoptions::FullDebugInfo)
503 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
506 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val));
508 if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) {
509 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue())
510 .Case("gdb", unsigned(llvm::DebuggerKind::GDB))
511 .Case("lldb", unsigned(llvm::DebuggerKind::LLDB))
512 .Case("sce", unsigned(llvm::DebuggerKind::SCE))
515 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
518 Opts.setDebuggerTuning(static_cast<llvm::DebuggerKind>(Val));
520 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags);
521 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
522 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview);
523 Opts.MacroDebugInfo = Args.hasArg(OPT_debug_info_macro);
524 Opts.WholeProgramVTables = Args.hasArg(OPT_fwhole_program_vtables);
525 Opts.LTOVisibilityPublicStd = Args.hasArg(OPT_flto_visibility_public_std);
526 Opts.EnableSplitDwarf = Args.hasArg(OPT_enable_split_dwarf);
527 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
528 Opts.SplitDwarfInlining = !Args.hasArg(OPT_fno_split_dwarf_inlining);
529 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs);
530 Opts.DebugExplicitImport = Triple.isPS4CPU();
532 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ))
533 Opts.DebugPrefixMap.insert(StringRef(Arg).split('='));
536 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists))
537 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists;
539 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes);
540 Opts.DisableLifetimeMarkers = Args.hasArg(OPT_disable_lifetimemarkers);
541 Opts.DisableO0ImplyOptNone = Args.hasArg(OPT_disable_O0_optnone);
542 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
543 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
544 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
545 OPT_fuse_register_sized_bitfield_access);
546 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
547 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
548 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
549 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
550 Opts.NoCommon = Args.hasArg(OPT_fno_common);
551 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
552 Opts.OptimizeSize = getOptimizationLevelSize(Args);
553 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
554 Args.hasArg(OPT_ffreestanding));
555 if (Opts.SimplifyLibCalls)
556 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
558 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
559 (Opts.OptimizationLevel > 1));
560 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
562 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
563 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
564 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
565 Opts.DebugInfoForProfiling = Args.hasFlag(
566 OPT_fdebug_info_for_profiling, OPT_fno_debug_info_for_profiling, false);
568 setPGOInstrumentor(Opts, Args, Diags);
569 Opts.InstrProfileOutput =
570 Args.getLastArgValue(OPT_fprofile_instrument_path_EQ);
571 Opts.ProfileInstrumentUsePath =
572 Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ);
573 if (!Opts.ProfileInstrumentUsePath.empty())
574 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath);
576 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) {
577 Opts.setClangABICompat(CodeGenOptions::ClangABI::Latest);
579 StringRef Ver = A->getValue();
580 std::pair<StringRef, StringRef> VerParts = Ver.split('.');
581 unsigned Major, Minor = 0;
583 // Check the version number is valid: either 3.x (0 <= x <= 9) or
584 // y or y.0 (4 <= y <= current version).
585 if (!VerParts.first.startswith("0") &&
586 !VerParts.first.getAsInteger(10, Major) &&
587 3 <= Major && Major <= CLANG_VERSION_MAJOR &&
588 (Major == 3 ? VerParts.second.size() == 1 &&
589 !VerParts.second.getAsInteger(10, Minor)
590 : VerParts.first.size() == Ver.size() ||
591 VerParts.second == "0")) {
592 // Got a valid version number.
593 if (Major == 3 && Minor <= 8)
594 Opts.setClangABICompat(CodeGenOptions::ClangABI::Ver3_8);
596 Opts.setClangABICompat(CodeGenOptions::ClangABI::Ver4);
597 } else if (Ver != "latest") {
598 Diags.Report(diag::err_drv_invalid_value)
599 << A->getAsString(Args) << A->getValue();
603 Opts.CoverageMapping =
604 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false);
605 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
606 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
607 Opts.PreserveAsmComments = !Args.hasArg(OPT_fno_preserve_as_comments);
608 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
609 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
610 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
611 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
612 Opts.CodeModel = getCodeModel(Args, Diags);
613 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
615 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg));
616 Opts.DisableFree = Args.hasArg(OPT_disable_free);
617 Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names);
618 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
619 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
620 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable) ||
621 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
622 Args.hasArg(OPT_cl_fast_relaxed_math);
623 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
624 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
625 Args.hasArg(OPT_cl_finite_math_only) ||
626 Args.hasArg(OPT_cl_fast_relaxed_math));
627 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
628 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
629 Args.hasArg(OPT_cl_finite_math_only) ||
630 Args.hasArg(OPT_cl_fast_relaxed_math));
631 Opts.NoSignedZeros = (Args.hasArg(OPT_fno_signed_zeros) ||
632 Args.hasArg(OPT_cl_no_signed_zeros) ||
633 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
634 Args.hasArg(OPT_cl_fast_relaxed_math));
635 Opts.FlushDenorm = Args.hasArg(OPT_cl_denorms_are_zero);
636 Opts.CorrectlyRoundedDivSqrt =
637 Args.hasArg(OPT_cl_fp32_correctly_rounded_divide_sqrt);
638 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math);
639 Opts.NoTrappingMath = Args.hasArg(OPT_fno_trapping_math);
640 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
641 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
642 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
643 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
644 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
645 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
646 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
647 Opts.IncrementalLinkerCompatible =
648 Args.hasArg(OPT_mincremental_linker_compatible);
649 Opts.PIECopyRelocations =
650 Args.hasArg(OPT_mpie_copy_relocations);
651 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
652 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
653 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
654 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
655 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
656 Opts.StrictReturn = !Args.hasArg(OPT_fno_strict_return);
657 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers);
658 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
659 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
660 Args.hasArg(OPT_cl_fast_relaxed_math);
661 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
662 Opts.RelocationModel = getRelocModel(Args, Diags);
663 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
664 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
665 Diags.Report(diag::err_drv_invalid_value)
666 << Args.getLastArg(OPT_mthread_model)->getAsString(Args)
668 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
669 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
671 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
672 OPT_fno_function_sections, false);
673 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
674 OPT_fno_data_sections, false);
675 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names,
676 OPT_fno_unique_section_names, true);
678 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
680 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables);
682 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ);
683 Opts.EmitSummaryIndex = false;
684 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) {
685 StringRef S = A->getValue();
687 Opts.EmitSummaryIndex = true;
688 else if (S != "full")
689 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S;
691 Opts.LTOUnit = Args.hasFlag(OPT_flto_unit, OPT_fno_lto_unit, false);
692 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) {
693 if (IK.getLanguage() != InputKind::LLVM_IR)
694 Diags.Report(diag::err_drv_argument_only_allowed_with)
695 << A->getAsString(Args) << "-x ir";
696 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ);
698 Opts.ThinLinkBitcodeFile = Args.getLastArgValue(OPT_fthin_link_bitcode_EQ);
700 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile);
702 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
703 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
705 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
706 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
708 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
709 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
710 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
711 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
712 Opts.CoverageDataFile = Args.getLastArgValue(OPT_coverage_data_file);
713 Opts.CoverageNotesFile = Args.getLastArgValue(OPT_coverage_notes_file);
714 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
715 Opts.CoverageNoFunctionNamesInData =
716 Args.hasArg(OPT_coverage_no_function_names_in_data);
717 Opts.CoverageExitBlockBeforeBody =
718 Args.hasArg(OPT_coverage_exit_block_before_body);
719 if (Args.hasArg(OPT_coverage_version_EQ)) {
720 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
721 if (CoverageVersion.size() != 4) {
722 Diags.Report(diag::err_drv_invalid_value)
723 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
726 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
730 // Handle -fembed-bitcode option.
731 if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) {
732 StringRef Name = A->getValue();
733 unsigned Model = llvm::StringSwitch<unsigned>(Name)
734 .Case("off", CodeGenOptions::Embed_Off)
735 .Case("all", CodeGenOptions::Embed_All)
736 .Case("bitcode", CodeGenOptions::Embed_Bitcode)
737 .Case("marker", CodeGenOptions::Embed_Marker)
740 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
743 Opts.setEmbedBitcode(
744 static_cast<CodeGenOptions::EmbedBitcodeKind>(Model));
746 // FIXME: For backend options that are not yet recorded as function
747 // attributes in the IR, keep track of them so we can embed them in a
748 // separate data section and use them when building the bitcode.
749 if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) {
750 for (const auto &A : Args) {
751 // Do not encode output and input.
752 if (A->getOption().getID() == options::OPT_o ||
753 A->getOption().getID() == options::OPT_INPUT ||
754 A->getOption().getID() == options::OPT_x ||
755 A->getOption().getID() == options::OPT_fembed_bitcode ||
756 (A->getOption().getGroup().isValid() &&
757 A->getOption().getGroup().getID() == options::OPT_W_Group))
760 A->render(Args, ASL);
761 for (const auto &arg : ASL) {
762 StringRef ArgStr(arg);
763 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end());
764 // using \00 to seperate each commandline options.
765 Opts.CmdArgs.push_back('\0');
770 Opts.PreserveVec3Type = Args.hasArg(OPT_fpreserve_vec3_type);
771 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
772 Opts.XRayInstrumentFunctions = Args.hasArg(OPT_fxray_instrument);
773 Opts.XRayInstructionThreshold =
774 getLastArgIntValue(Args, OPT_fxray_instruction_threshold_EQ, 200, Diags);
775 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
776 Opts.CallFEntry = Args.hasArg(OPT_mfentry);
777 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
779 if (const Arg *A = Args.getLastArg(OPT_compress_debug_sections,
780 OPT_compress_debug_sections_EQ)) {
781 if (A->getOption().getID() == OPT_compress_debug_sections) {
782 // TODO: be more clever about the compression type auto-detection
783 Opts.setCompressDebugSections(llvm::DebugCompressionType::GNU);
785 auto DCT = llvm::StringSwitch<llvm::DebugCompressionType>(A->getValue())
786 .Case("none", llvm::DebugCompressionType::None)
787 .Case("zlib", llvm::DebugCompressionType::Z)
788 .Case("zlib-gnu", llvm::DebugCompressionType::GNU)
789 .Default(llvm::DebugCompressionType::None);
790 Opts.setCompressDebugSections(DCT);
794 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations);
795 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
796 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) {
797 CodeGenOptions::BitcodeFileToLink F;
798 F.Filename = A->getValue();
799 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) {
800 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded;
801 // When linking CUDA bitcode, propagate function attributes so that
802 // e.g. libdevice gets fast-math attrs if we're building with fast-math.
803 F.PropagateAttrs = true;
804 F.Internalize = true;
806 Opts.LinkBitcodeFiles.push_back(F);
808 Opts.SanitizeCoverageType =
809 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags);
810 Opts.SanitizeCoverageIndirectCalls =
811 Args.hasArg(OPT_fsanitize_coverage_indirect_calls);
812 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb);
813 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp);
814 Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div);
815 Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep);
816 Opts.SanitizeCoverage8bitCounters =
817 Args.hasArg(OPT_fsanitize_coverage_8bit_counters);
818 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc);
819 Opts.SanitizeCoverageTracePCGuard =
820 Args.hasArg(OPT_fsanitize_coverage_trace_pc_guard);
821 Opts.SanitizeCoverageNoPrune = Args.hasArg(OPT_fsanitize_coverage_no_prune);
822 Opts.SanitizeCoverageInline8bitCounters =
823 Args.hasArg(OPT_fsanitize_coverage_inline_8bit_counters);
824 Opts.SanitizeMemoryTrackOrigins =
825 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
826 Opts.SanitizeMemoryUseAfterDtor =
827 Args.hasArg(OPT_fsanitize_memory_use_after_dtor);
828 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso);
829 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats);
830 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_after_scope,
831 OPT_fno_sanitize_address_use_after_scope)) {
832 Opts.SanitizeAddressUseAfterScope =
833 A->getOption().getID() == OPT_fsanitize_address_use_after_scope;
835 Opts.SanitizeAddressGlobalsDeadStripping =
836 Args.hasArg(OPT_fsanitize_address_globals_dead_stripping);
838 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
839 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
840 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
841 StringRef Val = A->getValue();
842 unsigned StackAlignment = Opts.StackAlignment;
843 Val.getAsInteger(10, StackAlignment);
844 Opts.StackAlignment = StackAlignment;
847 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) {
848 StringRef Val = A->getValue();
849 unsigned StackProbeSize = Opts.StackProbeSize;
850 Val.getAsInteger(0, StackProbeSize);
851 Opts.StackProbeSize = StackProbeSize;
854 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
855 StringRef Name = A->getValue();
856 unsigned Method = llvm::StringSwitch<unsigned>(Name)
857 .Case("legacy", CodeGenOptions::Legacy)
858 .Case("non-legacy", CodeGenOptions::NonLegacy)
859 .Case("mixed", CodeGenOptions::Mixed)
862 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
865 Opts.setObjCDispatchMethod(
866 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
871 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false);
873 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
874 StringRef Name = A->getValue();
875 unsigned Model = llvm::StringSwitch<unsigned>(Name)
876 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
877 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
878 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
879 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
882 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
885 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
889 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) {
890 StringRef Val = A->getValue();
892 Opts.FPDenormalMode = "ieee";
893 else if (Val == "preserve-sign")
894 Opts.FPDenormalMode = "preserve-sign";
895 else if (Val == "positive-zero")
896 Opts.FPDenormalMode = "positive-zero";
898 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
901 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
902 if (A->getOption().matches(OPT_fpcc_struct_return)) {
903 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
905 assert(A->getOption().matches(OPT_freg_struct_return));
906 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
910 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
911 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option);
912 bool NeedLocTracking = false;
914 Opts.OptRecordFile = Args.getLastArgValue(OPT_opt_record_file);
915 if (!Opts.OptRecordFile.empty())
916 NeedLocTracking = true;
918 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
919 Opts.OptimizationRemarkPattern =
920 GenerateOptimizationRemarkRegex(Diags, Args, A);
921 NeedLocTracking = true;
924 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
925 Opts.OptimizationRemarkMissedPattern =
926 GenerateOptimizationRemarkRegex(Diags, Args, A);
927 NeedLocTracking = true;
930 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
931 Opts.OptimizationRemarkAnalysisPattern =
932 GenerateOptimizationRemarkRegex(Diags, Args, A);
933 NeedLocTracking = true;
936 Opts.DiagnosticsWithHotness =
937 Args.hasArg(options::OPT_fdiagnostics_show_hotness);
938 bool UsingSampleProfile = !Opts.SampleProfileFile.empty();
939 bool UsingProfile = UsingSampleProfile ||
940 (Opts.getProfileUse() != CodeGenOptions::ProfileNone);
942 if (Opts.DiagnosticsWithHotness && !UsingProfile)
943 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
944 << "-fdiagnostics-show-hotness";
946 Opts.DiagnosticsHotnessThreshold = getLastArgUInt64Value(
947 Args, options::OPT_fdiagnostics_hotness_threshold_EQ, 0);
948 if (Opts.DiagnosticsHotnessThreshold > 0 && !UsingProfile)
949 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
950 << "-fdiagnostics-hotness-threshold=";
952 // If the user requested to use a sample profile for PGO, then the
953 // backend will need to track source location information so the profile
954 // can be incorporated into the IR.
955 if (UsingSampleProfile)
956 NeedLocTracking = true;
958 // If the user requested a flag that requires source locations available in
959 // the backend, make sure that the backend tracks source location information.
960 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo)
961 Opts.setDebugInfo(codegenoptions::LocTrackingOnly);
963 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
965 // Parse -fsanitize-recover= arguments.
966 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
967 parseSanitizerKinds("-fsanitize-recover=",
968 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
969 Opts.SanitizeRecover);
970 parseSanitizerKinds("-fsanitize-trap=",
971 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags,
974 Opts.CudaGpuBinaryFileNames =
975 Args.getAllArgValues(OPT_fcuda_include_gpubinary);
977 Opts.Backchain = Args.hasArg(OPT_mbackchain);
979 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue(
980 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags);
985 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
987 using namespace options;
988 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
989 Opts.Targets = Args.getAllArgValues(OPT_MT);
990 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
991 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
992 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
993 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
994 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
995 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
996 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
997 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
998 Opts.ModuleDependencyOutputDir =
999 Args.getLastArgValue(OPT_module_dependency_dir);
1000 if (Args.hasArg(OPT_MV))
1001 Opts.OutputFormat = DependencyOutputFormat::NMake;
1002 // Add sanitizer blacklists as extra dependencies.
1003 // They won't be discovered by the regular preprocessor, so
1004 // we let make / ninja to know about this implicit dependency.
1005 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry);
1006 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
1007 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(),
1011 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) {
1012 // Color diagnostics default to auto ("on" if terminal supports) in the driver
1013 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color.
1014 // Support both clang's -f[no-]color-diagnostics and gcc's
1015 // -f[no-]diagnostics-colors[=never|always|auto].
1020 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off;
1021 for (Arg *A : Args) {
1022 const Option &O = A->getOption();
1023 if (O.matches(options::OPT_fcolor_diagnostics) ||
1024 O.matches(options::OPT_fdiagnostics_color)) {
1025 ShowColors = Colors_On;
1026 } else if (O.matches(options::OPT_fno_color_diagnostics) ||
1027 O.matches(options::OPT_fno_diagnostics_color)) {
1028 ShowColors = Colors_Off;
1029 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
1030 StringRef Value(A->getValue());
1031 if (Value == "always")
1032 ShowColors = Colors_On;
1033 else if (Value == "never")
1034 ShowColors = Colors_Off;
1035 else if (Value == "auto")
1036 ShowColors = Colors_Auto;
1039 return ShowColors == Colors_On ||
1040 (ShowColors == Colors_Auto &&
1041 llvm::sys::Process::StandardErrHasColors());
1044 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1045 DiagnosticsEngine *Diags,
1046 bool DefaultDiagColor, bool DefaultShowOpt) {
1047 using namespace options;
1048 bool Success = true;
1050 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
1052 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
1053 Opts.DiagnosticSerializationFile = A->getValue();
1054 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
1055 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
1056 Opts.Pedantic = Args.hasArg(OPT_pedantic);
1057 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
1058 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
1059 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor);
1060 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1061 OPT_fno_show_column,
1063 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1064 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1065 Opts.AbsolutePath = Args.hasArg(OPT_fdiagnostics_absolute_paths);
1066 Opts.ShowOptionNames =
1067 Args.hasFlag(OPT_fdiagnostics_show_option,
1068 OPT_fno_diagnostics_show_option, DefaultShowOpt);
1070 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
1072 // Default behavior is to not to show note include stacks.
1073 Opts.ShowNoteIncludeStack = false;
1074 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1075 OPT_fno_diagnostics_show_note_include_stack))
1076 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1077 Opts.ShowNoteIncludeStack = true;
1079 StringRef ShowOverloads =
1080 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1081 if (ShowOverloads == "best")
1082 Opts.setShowOverloads(Ovl_Best);
1083 else if (ShowOverloads == "all")
1084 Opts.setShowOverloads(Ovl_All);
1088 Diags->Report(diag::err_drv_invalid_value)
1089 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1093 StringRef ShowCategory =
1094 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1095 if (ShowCategory == "none")
1096 Opts.ShowCategories = 0;
1097 else if (ShowCategory == "id")
1098 Opts.ShowCategories = 1;
1099 else if (ShowCategory == "name")
1100 Opts.ShowCategories = 2;
1104 Diags->Report(diag::err_drv_invalid_value)
1105 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1110 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1111 if (Format == "clang")
1112 Opts.setFormat(DiagnosticOptions::Clang);
1113 else if (Format == "msvc")
1114 Opts.setFormat(DiagnosticOptions::MSVC);
1115 else if (Format == "msvc-fallback") {
1116 Opts.setFormat(DiagnosticOptions::MSVC);
1117 Opts.CLFallbackMode = true;
1118 } else if (Format == "vi")
1119 Opts.setFormat(DiagnosticOptions::Vi);
1123 Diags->Report(diag::err_drv_invalid_value)
1124 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1128 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1129 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1130 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
1131 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1132 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None;
1133 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=",
1134 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ),
1136 if (Args.hasArg(OPT_verify_ignore_unexpected))
1137 DiagMask = DiagnosticLevelMask::All;
1138 Opts.setVerifyIgnoreUnexpected(DiagMask);
1139 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
1140 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
1141 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
1142 Opts.MacroBacktraceLimit =
1143 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
1144 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1145 Opts.TemplateBacktraceLimit = getLastArgIntValue(
1146 Args, OPT_ftemplate_backtrace_limit,
1147 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
1148 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
1149 Args, OPT_fconstexpr_backtrace_limit,
1150 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
1151 Opts.SpellCheckingLimit = getLastArgIntValue(
1152 Args, OPT_fspell_checking_limit,
1153 DiagnosticOptions::DefaultSpellCheckingLimit, Diags);
1154 Opts.SnippetLineLimit = getLastArgIntValue(
1155 Args, OPT_fcaret_diagnostics_max_lines,
1156 DiagnosticOptions::DefaultSnippetLineLimit, Diags);
1157 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
1158 DiagnosticOptions::DefaultTabStop, Diags);
1159 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1160 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1162 Diags->Report(diag::warn_ignoring_ftabstop_value)
1163 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1165 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
1166 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
1167 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
1172 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1173 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1176 /// Parse the argument to the -ftest-module-file-extension
1177 /// command-line argument.
1179 /// \returns true on error, false on success.
1180 static bool parseTestModuleFileExtensionArg(StringRef Arg,
1181 std::string &BlockName,
1182 unsigned &MajorVersion,
1183 unsigned &MinorVersion,
1185 std::string &UserInfo) {
1186 SmallVector<StringRef, 5> Args;
1187 Arg.split(Args, ':', 5);
1188 if (Args.size() < 5)
1191 BlockName = Args[0];
1192 if (Args[1].getAsInteger(10, MajorVersion)) return true;
1193 if (Args[2].getAsInteger(10, MinorVersion)) return true;
1194 if (Args[3].getAsInteger(2, Hashed)) return true;
1195 if (Args.size() > 4)
1200 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1201 DiagnosticsEngine &Diags,
1202 bool &IsHeaderFile) {
1203 using namespace options;
1204 Opts.ProgramAction = frontend::ParseSyntaxOnly;
1205 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1206 switch (A->getOption().getID()) {
1208 llvm_unreachable("Invalid option in group!");
1210 Opts.ProgramAction = frontend::ASTDeclList; break;
1212 case OPT_ast_dump_all:
1213 case OPT_ast_dump_lookups:
1214 Opts.ProgramAction = frontend::ASTDump; break;
1216 Opts.ProgramAction = frontend::ASTPrint; break;
1218 Opts.ProgramAction = frontend::ASTView; break;
1219 case OPT_dump_raw_tokens:
1220 Opts.ProgramAction = frontend::DumpRawTokens; break;
1221 case OPT_dump_tokens:
1222 Opts.ProgramAction = frontend::DumpTokens; break;
1224 Opts.ProgramAction = frontend::EmitAssembly; break;
1225 case OPT_emit_llvm_bc:
1226 Opts.ProgramAction = frontend::EmitBC; break;
1228 Opts.ProgramAction = frontend::EmitHTML; break;
1230 Opts.ProgramAction = frontend::EmitLLVM; break;
1231 case OPT_emit_llvm_only:
1232 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1233 case OPT_emit_codegen_only:
1234 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1236 Opts.ProgramAction = frontend::EmitObj; break;
1238 Opts.FixItSuffix = A->getValue();
1241 Opts.ProgramAction = frontend::FixIt; break;
1242 case OPT_emit_module:
1243 Opts.ProgramAction = frontend::GenerateModule; break;
1244 case OPT_emit_module_interface:
1245 Opts.ProgramAction = frontend::GenerateModuleInterface; break;
1247 Opts.ProgramAction = frontend::GeneratePCH; break;
1249 Opts.ProgramAction = frontend::GeneratePTH; break;
1251 Opts.ProgramAction = frontend::InitOnly; break;
1252 case OPT_fsyntax_only:
1253 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1254 case OPT_module_file_info:
1255 Opts.ProgramAction = frontend::ModuleFileInfo; break;
1256 case OPT_verify_pch:
1257 Opts.ProgramAction = frontend::VerifyPCH; break;
1258 case OPT_print_decl_contexts:
1259 Opts.ProgramAction = frontend::PrintDeclContext; break;
1260 case OPT_print_preamble:
1261 Opts.ProgramAction = frontend::PrintPreamble; break;
1263 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1264 case OPT_rewrite_macros:
1265 Opts.ProgramAction = frontend::RewriteMacros; break;
1266 case OPT_rewrite_objc:
1267 Opts.ProgramAction = frontend::RewriteObjC; break;
1268 case OPT_rewrite_test:
1269 Opts.ProgramAction = frontend::RewriteTest; break;
1271 Opts.ProgramAction = frontend::RunAnalysis; break;
1273 Opts.ProgramAction = frontend::MigrateSource; break;
1275 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1279 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1280 Opts.Plugins.emplace_back(A->getValue(0));
1281 Opts.ProgramAction = frontend::PluginAction;
1282 Opts.ActionName = A->getValue();
1284 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1285 for (const Arg *AA : Args.filtered(OPT_plugin_arg))
1286 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1));
1288 for (const std::string &Arg :
1289 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) {
1290 std::string BlockName;
1291 unsigned MajorVersion;
1292 unsigned MinorVersion;
1294 std::string UserInfo;
1295 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion,
1296 MinorVersion, Hashed, UserInfo)) {
1297 Diags.Report(diag::err_test_module_file_extension_format) << Arg;
1302 // Add the testing module file extension.
1303 Opts.ModuleFileExtensions.push_back(
1304 std::make_shared<TestModuleFileExtension>(
1305 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo));
1308 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1309 Opts.CodeCompletionAt =
1310 ParsedSourceLocation::FromString(A->getValue());
1311 if (Opts.CodeCompletionAt.FileName.empty())
1312 Diags.Report(diag::err_drv_invalid_value)
1313 << A->getAsString(Args) << A->getValue();
1315 Opts.DisableFree = Args.hasArg(OPT_disable_free);
1317 Opts.OutputFile = Args.getLastArgValue(OPT_o);
1318 Opts.Plugins = Args.getAllArgValues(OPT_load);
1319 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1320 Opts.ShowHelp = Args.hasArg(OPT_help);
1321 Opts.ShowStats = Args.hasArg(OPT_print_stats);
1322 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1323 Opts.ShowVersion = Args.hasArg(OPT_version);
1324 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1325 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1326 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1327 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
1328 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
1329 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
1330 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
1331 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all);
1332 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
1333 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
1334 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
1335 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
1336 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
1337 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
1338 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ);
1339 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files);
1340 Opts.IncludeTimestamps = !Args.hasArg(OPT_fno_pch_timestamp);
1342 Opts.CodeCompleteOpts.IncludeMacros
1343 = Args.hasArg(OPT_code_completion_macros);
1344 Opts.CodeCompleteOpts.IncludeCodePatterns
1345 = Args.hasArg(OPT_code_completion_patterns);
1346 Opts.CodeCompleteOpts.IncludeGlobals
1347 = !Args.hasArg(OPT_no_code_completion_globals);
1348 Opts.CodeCompleteOpts.IncludeBriefComments
1349 = Args.hasArg(OPT_code_completion_brief_comments);
1351 Opts.OverrideRecordLayoutsFile
1352 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
1354 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple));
1355 Opts.FindPchSource = Args.getLastArgValue(OPT_find_pch_source_EQ);
1356 Opts.StatsFile = Args.getLastArgValue(OPT_stats_file);
1358 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1360 OPT_arcmt_migrate)) {
1361 switch (A->getOption().getID()) {
1363 llvm_unreachable("missed a case");
1364 case OPT_arcmt_check:
1365 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1367 case OPT_arcmt_modify:
1368 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1370 case OPT_arcmt_migrate:
1371 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1375 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
1376 Opts.ARCMTMigrateReportOut
1377 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1378 Opts.ARCMTMigrateEmitARCErrors
1379 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1381 if (Args.hasArg(OPT_objcmt_migrate_literals))
1382 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
1383 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
1384 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
1385 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
1386 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
1387 if (Args.hasArg(OPT_objcmt_migrate_property))
1388 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
1389 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
1390 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
1391 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
1392 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
1393 if (Args.hasArg(OPT_objcmt_migrate_annotation))
1394 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
1395 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
1396 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
1397 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
1398 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
1399 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
1400 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
1401 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
1402 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
1403 if (Args.hasArg(OPT_objcmt_atomic_property))
1404 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
1405 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
1406 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
1407 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
1408 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
1409 if (Args.hasArg(OPT_objcmt_migrate_all))
1410 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
1412 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
1414 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
1415 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
1416 Diags.Report(diag::err_drv_argument_not_allowed_with)
1417 << "ARC migration" << "ObjC migration";
1420 InputKind DashX(InputKind::Unknown);
1421 if (const Arg *A = Args.getLastArg(OPT_x)) {
1422 StringRef XValue = A->getValue();
1424 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'.
1425 // FIXME: Supporting '<lang>-header-cpp-output' would be useful.
1426 bool Preprocessed = XValue.consume_back("-cpp-output");
1427 bool ModuleMap = XValue.consume_back("-module-map");
1429 !Preprocessed && !ModuleMap && XValue.consume_back("-header");
1431 // Principal languages.
1432 DashX = llvm::StringSwitch<InputKind>(XValue)
1433 .Case("c", InputKind::C)
1434 .Case("cl", InputKind::OpenCL)
1435 .Case("cuda", InputKind::CUDA)
1436 .Case("c++", InputKind::CXX)
1437 .Case("objective-c", InputKind::ObjC)
1438 .Case("objective-c++", InputKind::ObjCXX)
1439 .Case("renderscript", InputKind::RenderScript)
1440 .Default(InputKind::Unknown);
1442 // "objc[++]-cpp-output" is an acceptable synonym for
1443 // "objective-c[++]-cpp-output".
1444 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap)
1445 DashX = llvm::StringSwitch<InputKind>(XValue)
1446 .Case("objc", InputKind::ObjC)
1447 .Case("objc++", InputKind::ObjCXX)
1448 .Default(InputKind::Unknown);
1450 // Some special cases cannot be combined with suffixes.
1451 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile)
1452 DashX = llvm::StringSwitch<InputKind>(XValue)
1453 .Case("cpp-output", InputKind(InputKind::C).getPreprocessed())
1454 .Case("assembler-with-cpp", InputKind::Asm)
1455 .Cases("ast", "pcm",
1456 InputKind(InputKind::Unknown, InputKind::Precompiled))
1457 .Case("ir", InputKind::LLVM_IR)
1458 .Default(InputKind::Unknown);
1460 if (DashX.isUnknown())
1461 Diags.Report(diag::err_drv_invalid_value)
1462 << A->getAsString(Args) << A->getValue();
1465 DashX = DashX.getPreprocessed();
1467 DashX = DashX.withFormat(InputKind::ModuleMap);
1470 // '-' is the default input if none is given.
1471 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1472 Opts.Inputs.clear();
1474 Inputs.push_back("-");
1475 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1476 InputKind IK = DashX;
1477 if (IK.isUnknown()) {
1478 IK = FrontendOptions::getInputKindForExtension(
1479 StringRef(Inputs[i]).rsplit('.').second);
1480 // FIXME: Warn on this?
1483 // FIXME: Remove this hack.
1488 // The -emit-module action implicitly takes a module map.
1489 if (Opts.ProgramAction == frontend::GenerateModule &&
1490 IK.getFormat() == InputKind::Source)
1491 IK = IK.withFormat(InputKind::ModuleMap);
1493 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK);
1499 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1501 std::string ClangExecutable =
1502 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1503 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
1505 // Compute the path to the resource directory.
1506 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
1507 SmallString<128> P(Dir);
1508 if (ClangResourceDir != "")
1509 llvm::sys::path::append(P, ClangResourceDir);
1511 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX,
1512 "clang", CLANG_VERSION_STRING);
1517 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args,
1518 const std::string &WorkingDir) {
1519 using namespace options;
1520 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1521 Opts.Verbose = Args.hasArg(OPT_v);
1522 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1523 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1524 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1525 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1526 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1527 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1529 // Canonicalize -fmodules-cache-path before storing it.
1530 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path));
1531 if (!(P.empty() || llvm::sys::path::is_absolute(P))) {
1532 if (WorkingDir.empty())
1533 llvm::sys::fs::make_absolute(P);
1535 llvm::sys::fs::make_absolute(WorkingDir, P);
1537 llvm::sys::path::remove_dots(P);
1538 Opts.ModuleCachePath = P.str();
1540 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
1541 for (const Arg *A : Args.filtered(OPT_fprebuilt_module_path))
1542 Opts.AddPrebuiltModulePath(A->getValue());
1543 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1544 Opts.ModulesHashContent = Args.hasArg(OPT_fmodules_hash_content);
1545 Opts.ModulesValidateDiagnosticOptions =
1546 !Args.hasArg(OPT_fmodules_disable_diagnostic_validation);
1547 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps);
1548 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
1549 Opts.ModuleCachePruneInterval =
1550 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
1551 Opts.ModuleCachePruneAfter =
1552 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
1553 Opts.ModulesValidateOncePerBuildSession =
1554 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
1555 Opts.BuildSessionTimestamp =
1556 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
1557 Opts.ModulesValidateSystemHeaders =
1558 Args.hasArg(OPT_fmodules_validate_system_headers);
1559 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ))
1560 Opts.ModuleFormat = A->getValue();
1562 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) {
1563 StringRef MacroDef = A->getValue();
1564 Opts.ModulesIgnoreMacros.insert(
1565 llvm::CachedHashString(MacroDef.split('=').first));
1568 // Add -I..., -F..., and -index-header-map options in order.
1569 bool IsIndexHeaderMap = false;
1570 bool IsSysrootSpecified =
1571 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot);
1572 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) {
1573 if (A->getOption().matches(OPT_index_header_map)) {
1574 // -index-header-map applies to the next -I or -F.
1575 IsIndexHeaderMap = true;
1579 frontend::IncludeDirGroup Group =
1580 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled;
1582 bool IsFramework = A->getOption().matches(OPT_F);
1583 std::string Path = A->getValue();
1585 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') {
1586 SmallString<32> Buffer;
1587 llvm::sys::path::append(Buffer, Opts.Sysroot,
1588 llvm::StringRef(A->getValue()).substr(1));
1589 Path = Buffer.str();
1592 Opts.AddPath(Path, Group, IsFramework,
1593 /*IgnoreSysroot*/ true);
1594 IsIndexHeaderMap = false;
1597 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1598 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1600 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) {
1601 if (A->getOption().matches(OPT_iprefix))
1602 Prefix = A->getValue();
1603 else if (A->getOption().matches(OPT_iwithprefix))
1604 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true);
1606 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true);
1609 for (const Arg *A : Args.filtered(OPT_idirafter))
1610 Opts.AddPath(A->getValue(), frontend::After, false, true);
1611 for (const Arg *A : Args.filtered(OPT_iquote))
1612 Opts.AddPath(A->getValue(), frontend::Quoted, false, true);
1613 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot))
1614 Opts.AddPath(A->getValue(), frontend::System, false,
1615 !A->getOption().matches(OPT_iwithsysroot));
1616 for (const Arg *A : Args.filtered(OPT_iframework))
1617 Opts.AddPath(A->getValue(), frontend::System, true, true);
1618 for (const Arg *A : Args.filtered(OPT_iframeworkwithsysroot))
1619 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true,
1620 /*IgnoreSysRoot=*/false);
1622 // Add the paths for the various language specific isystem flags.
1623 for (const Arg *A : Args.filtered(OPT_c_isystem))
1624 Opts.AddPath(A->getValue(), frontend::CSystem, false, true);
1625 for (const Arg *A : Args.filtered(OPT_cxx_isystem))
1626 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true);
1627 for (const Arg *A : Args.filtered(OPT_objc_isystem))
1628 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true);
1629 for (const Arg *A : Args.filtered(OPT_objcxx_isystem))
1630 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true);
1632 // Add the internal paths from a driver that detects standard include paths.
1634 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) {
1635 frontend::IncludeDirGroup Group = frontend::System;
1636 if (A->getOption().matches(OPT_internal_externc_isystem))
1637 Group = frontend::ExternCSystem;
1638 Opts.AddPath(A->getValue(), Group, false, true);
1641 // Add the path prefixes which are implicitly treated as being system headers.
1643 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix))
1644 Opts.AddSystemHeaderPrefix(
1645 A->getValue(), A->getOption().matches(OPT_system_header_prefix));
1647 for (const Arg *A : Args.filtered(OPT_ivfsoverlay))
1648 Opts.AddVFSOverlayFile(A->getValue());
1651 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1652 const llvm::Triple &T,
1653 PreprocessorOptions &PPOpts,
1654 LangStandard::Kind LangStd) {
1655 // Set some properties which depend solely on the input kind; it would be nice
1656 // to move these to the language standard, and have the driver resolve the
1657 // input kind + language standard.
1659 // FIXME: Perhaps a better model would be for a single source file to have
1660 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std)
1661 // simultaneously active?
1662 if (IK.getLanguage() == InputKind::Asm) {
1663 Opts.AsmPreprocessor = 1;
1664 } else if (IK.isObjectiveC()) {
1665 Opts.ObjC1 = Opts.ObjC2 = 1;
1668 if (LangStd == LangStandard::lang_unspecified) {
1669 // Based on the base language, pick one.
1670 switch (IK.getLanguage()) {
1671 case InputKind::Unknown:
1672 case InputKind::LLVM_IR:
1673 llvm_unreachable("Invalid input kind!");
1674 case InputKind::OpenCL:
1675 LangStd = LangStandard::lang_opencl10;
1677 case InputKind::CUDA:
1678 LangStd = LangStandard::lang_cuda;
1680 case InputKind::Asm:
1682 // The PS4 uses C99 as the default C standard.
1684 LangStd = LangStandard::lang_gnu99;
1686 LangStd = LangStandard::lang_gnu11;
1688 case InputKind::ObjC:
1689 LangStd = LangStandard::lang_gnu11;
1691 case InputKind::CXX:
1692 case InputKind::ObjCXX:
1693 // The PS4 uses C++11 as the default C++ standard.
1695 LangStd = LangStandard::lang_gnucxx11;
1697 LangStd = LangStandard::lang_gnucxx98;
1699 case InputKind::RenderScript:
1700 LangStd = LangStandard::lang_c99;
1705 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1706 Opts.LineComment = Std.hasLineComments();
1707 Opts.C99 = Std.isC99();
1708 Opts.C11 = Std.isC11();
1709 Opts.CPlusPlus = Std.isCPlusPlus();
1710 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1711 Opts.CPlusPlus14 = Std.isCPlusPlus14();
1712 Opts.CPlusPlus1z = Std.isCPlusPlus1z();
1713 Opts.CPlusPlus2a = Std.isCPlusPlus2a();
1714 Opts.Digraphs = Std.hasDigraphs();
1715 Opts.GNUMode = Std.isGNUMode();
1716 Opts.GNUInline = !Opts.C99 && !Opts.CPlusPlus;
1717 Opts.HexFloats = Std.hasHexFloats();
1718 Opts.ImplicitInt = Std.hasImplicitInt();
1720 // Set OpenCL Version.
1721 Opts.OpenCL = Std.isOpenCL();
1722 if (LangStd == LangStandard::lang_opencl10)
1723 Opts.OpenCLVersion = 100;
1724 else if (LangStd == LangStandard::lang_opencl11)
1725 Opts.OpenCLVersion = 110;
1726 else if (LangStd == LangStandard::lang_opencl12)
1727 Opts.OpenCLVersion = 120;
1728 else if (LangStd == LangStandard::lang_opencl20)
1729 Opts.OpenCLVersion = 200;
1731 // OpenCL has some additional defaults.
1735 Opts.LaxVectorConversions = 0;
1736 Opts.setDefaultFPContractMode(LangOptions::FPC_On);
1737 Opts.NativeHalfType = 1;
1738 Opts.NativeHalfArgsAndReturns = 1;
1739 // Include default header file for OpenCL.
1740 if (Opts.IncludeDefaultHeader) {
1741 PPOpts.Includes.push_back("opencl-c.h");
1745 Opts.CUDA = IK.getLanguage() == InputKind::CUDA;
1747 // Set default FP_CONTRACT to FAST.
1748 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast);
1750 Opts.RenderScript = IK.getLanguage() == InputKind::RenderScript;
1751 if (Opts.RenderScript) {
1752 Opts.NativeHalfType = 1;
1753 Opts.NativeHalfArgsAndReturns = 1;
1756 // OpenCL and C++ both have bool, true, false keywords.
1757 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1759 // OpenCL has half keyword
1760 Opts.Half = Opts.OpenCL;
1762 // C++ has wchar_t keyword.
1763 Opts.WChar = Opts.CPlusPlus;
1765 Opts.GNUKeywords = Opts.GNUMode;
1766 Opts.CXXOperatorNames = Opts.CPlusPlus;
1768 Opts.AlignedAllocation = Opts.CPlusPlus1z;
1770 Opts.DollarIdents = !Opts.AsmPreprocessor;
1773 /// Attempt to parse a visibility value out of the given argument.
1774 static Visibility parseVisibility(Arg *arg, ArgList &args,
1775 DiagnosticsEngine &diags) {
1776 StringRef value = arg->getValue();
1777 if (value == "default") {
1778 return DefaultVisibility;
1779 } else if (value == "hidden" || value == "internal") {
1780 return HiddenVisibility;
1781 } else if (value == "protected") {
1782 // FIXME: diagnose if target does not support protected visibility
1783 return ProtectedVisibility;
1786 diags.Report(diag::err_drv_invalid_value)
1787 << arg->getAsString(args) << value;
1788 return DefaultVisibility;
1791 /// Check if input file kind and language standard are compatible.
1792 static bool IsInputCompatibleWithStandard(InputKind IK,
1793 const LangStandard &S) {
1794 switch (IK.getLanguage()) {
1795 case InputKind::Unknown:
1796 case InputKind::LLVM_IR:
1797 llvm_unreachable("should not parse language flags for this input");
1800 case InputKind::ObjC:
1801 case InputKind::RenderScript:
1802 return S.getLanguage() == InputKind::C;
1804 case InputKind::OpenCL:
1805 return S.getLanguage() == InputKind::OpenCL;
1807 case InputKind::CXX:
1808 case InputKind::ObjCXX:
1809 return S.getLanguage() == InputKind::CXX;
1811 case InputKind::CUDA:
1812 // FIXME: What -std= values should be permitted for CUDA compilations?
1813 return S.getLanguage() == InputKind::CUDA ||
1814 S.getLanguage() == InputKind::CXX;
1816 case InputKind::Asm:
1817 // Accept (and ignore) all -std= values.
1818 // FIXME: The -std= value is not ignored; it affects the tokenization
1819 // and preprocessing rules if we're preprocessing this asm input.
1823 llvm_unreachable("unexpected input language");
1826 /// Get language name for given input kind.
1827 static const StringRef GetInputKindName(InputKind IK) {
1828 switch (IK.getLanguage()) {
1831 case InputKind::ObjC:
1832 return "Objective-C";
1833 case InputKind::CXX:
1835 case InputKind::ObjCXX:
1836 return "Objective-C++";
1837 case InputKind::OpenCL:
1839 case InputKind::CUDA:
1841 case InputKind::RenderScript:
1842 return "RenderScript";
1844 case InputKind::Asm:
1846 case InputKind::LLVM_IR:
1849 case InputKind::Unknown:
1852 llvm_unreachable("unknown input language");
1855 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1856 const TargetOptions &TargetOpts,
1857 PreprocessorOptions &PPOpts,
1858 DiagnosticsEngine &Diags) {
1859 // FIXME: Cleanup per-file based stuff.
1860 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1861 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1862 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1863 #define LANGSTANDARD(id, name, lang, desc, features) \
1864 .Case(name, LangStandard::lang_##id)
1865 #define LANGSTANDARD_ALIAS(id, alias) \
1866 .Case(alias, LangStandard::lang_##id)
1867 #include "clang/Frontend/LangStandards.def"
1868 .Default(LangStandard::lang_unspecified);
1869 if (LangStd == LangStandard::lang_unspecified) {
1870 Diags.Report(diag::err_drv_invalid_value)
1871 << A->getAsString(Args) << A->getValue();
1872 // Report supported standards with short description.
1873 for (unsigned KindValue = 0;
1874 KindValue != LangStandard::lang_unspecified;
1876 const LangStandard &Std = LangStandard::getLangStandardForKind(
1877 static_cast<LangStandard::Kind>(KindValue));
1878 if (IsInputCompatibleWithStandard(IK, Std)) {
1879 auto Diag = Diags.Report(diag::note_drv_use_standard);
1880 Diag << Std.getName() << Std.getDescription();
1881 unsigned NumAliases = 0;
1882 #define LANGSTANDARD(id, name, lang, desc, features)
1883 #define LANGSTANDARD_ALIAS(id, alias) \
1884 if (KindValue == LangStandard::lang_##id) ++NumAliases;
1885 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
1886 #include "clang/Frontend/LangStandards.def"
1888 #define LANGSTANDARD(id, name, lang, desc, features)
1889 #define LANGSTANDARD_ALIAS(id, alias) \
1890 if (KindValue == LangStandard::lang_##id) Diag << alias;
1891 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
1892 #include "clang/Frontend/LangStandards.def"
1896 // Valid standard, check to make sure language and standard are
1898 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1899 if (!IsInputCompatibleWithStandard(IK, Std)) {
1900 Diags.Report(diag::err_drv_argument_not_allowed_with)
1901 << A->getAsString(Args) << GetInputKindName(IK);
1906 // -cl-std only applies for OpenCL language standards.
1907 // Override the -std option in this case.
1908 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1909 LangStandard::Kind OpenCLLangStd
1910 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1911 .Cases("cl", "CL", LangStandard::lang_opencl10)
1912 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11)
1913 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12)
1914 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20)
1915 .Default(LangStandard::lang_unspecified);
1917 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1918 Diags.Report(diag::err_drv_invalid_value)
1919 << A->getAsString(Args) << A->getValue();
1922 LangStd = OpenCLLangStd;
1925 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header);
1927 llvm::Triple T(TargetOpts.Triple);
1928 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd);
1930 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0.
1931 // This option should be deprecated for CL > 1.0 because
1932 // this option was added for compatibility with OpenCL 1.0.
1933 if (Args.getLastArg(OPT_cl_strict_aliasing)
1934 && Opts.OpenCLVersion > 100) {
1935 std::string VerSpec = llvm::to_string(Opts.OpenCLVersion / 100) +
1937 llvm::to_string((Opts.OpenCLVersion % 100) / 10);
1938 Diags.Report(diag::warn_option_invalid_ocl_version)
1939 << VerSpec << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args);
1942 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1943 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1944 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1945 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1946 // name, as it doesn't seem a useful distinction.
1947 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1950 if (Args.hasArg(OPT_fno_operator_names))
1951 Opts.CXXOperatorNames = 0;
1953 if (Args.hasArg(OPT_fcuda_is_device))
1954 Opts.CUDAIsDevice = 1;
1956 if (Args.hasArg(OPT_fcuda_allow_variadic_functions))
1957 Opts.CUDAAllowVariadicFunctions = 1;
1959 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr))
1960 Opts.CUDAHostDeviceConstexpr = 0;
1962 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero))
1963 Opts.CUDADeviceFlushDenormalsToZero = 1;
1965 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals))
1966 Opts.CUDADeviceApproxTranscendentals = 1;
1969 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1970 StringRef value = arg->getValue();
1971 if (Opts.ObjCRuntime.tryParse(value))
1972 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1975 if (Args.hasArg(OPT_fobjc_gc_only))
1976 Opts.setGC(LangOptions::GCOnly);
1977 else if (Args.hasArg(OPT_fobjc_gc))
1978 Opts.setGC(LangOptions::HybridGC);
1979 else if (Args.hasArg(OPT_fobjc_arc)) {
1980 Opts.ObjCAutoRefCount = 1;
1981 if (!Opts.ObjCRuntime.allowsARC())
1982 Diags.Report(diag::err_arc_unsupported_on_runtime);
1985 // ObjCWeakRuntime tracks whether the runtime supports __weak, not
1986 // whether the feature is actually enabled. This is predominantly
1987 // determined by -fobjc-runtime, but we allow it to be overridden
1988 // from the command line for testing purposes.
1989 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1990 Opts.ObjCWeakRuntime = 1;
1992 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak();
1994 // ObjCWeak determines whether __weak is actually enabled.
1995 // Note that we allow -fno-objc-weak to disable this even in ARC mode.
1996 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) {
1997 if (!weakArg->getOption().matches(OPT_fobjc_weak)) {
1998 assert(!Opts.ObjCWeak);
1999 } else if (Opts.getGC() != LangOptions::NonGC) {
2000 Diags.Report(diag::err_objc_weak_with_gc);
2001 } else if (!Opts.ObjCWeakRuntime) {
2002 Diags.Report(diag::err_objc_weak_unsupported);
2006 } else if (Opts.ObjCAutoRefCount) {
2007 Opts.ObjCWeak = Opts.ObjCWeakRuntime;
2010 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
2011 Opts.ObjCInferRelatedResultType = 0;
2013 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
2014 Opts.ObjCSubscriptingLegacyRuntime =
2015 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
2018 if (Args.hasArg(OPT_fgnu89_inline)) {
2020 Diags.Report(diag::err_drv_argument_not_allowed_with)
2021 << "-fgnu89-inline" << GetInputKindName(IK);
2026 if (Args.hasArg(OPT_fapple_kext)) {
2027 if (!Opts.CPlusPlus)
2028 Diags.Report(diag::warn_c_kext);
2033 if (Args.hasArg(OPT_print_ivar_layout))
2034 Opts.ObjCGCBitmapPrint = 1;
2035 if (Args.hasArg(OPT_fno_constant_cfstrings))
2036 Opts.NoConstantCFStrings = 1;
2038 if (Args.hasArg(OPT_fzvector))
2041 if (Args.hasArg(OPT_pthread))
2042 Opts.POSIXThreads = 1;
2044 // The value-visibility mode defaults to "default".
2045 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
2046 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
2048 Opts.setValueVisibilityMode(DefaultVisibility);
2051 // The type-visibility mode defaults to the value-visibility mode.
2052 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
2053 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
2055 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
2058 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
2059 Opts.InlineVisibilityHidden = 1;
2061 if (Args.hasArg(OPT_ftrapv)) {
2062 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
2063 // Set the handler, if one is specified.
2064 Opts.OverflowHandler =
2065 Args.getLastArgValue(OPT_ftrapv_handler);
2067 else if (Args.hasArg(OPT_fwrapv))
2068 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
2070 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
2071 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
2072 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
2073 Opts.MSCompatibilityVersion = 0;
2074 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) {
2076 if (VT.tryParse(A->getValue()))
2077 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
2079 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 +
2080 VT.getMinor().getValueOr(0) * 100000 +
2081 VT.getSubminor().getValueOr(0);
2084 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
2085 // is specified, or -std is set to a conforming mode.
2086 // Trigraphs are disabled by default in c++1z onwards.
2087 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z;
2089 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
2091 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
2092 OPT_fno_dollars_in_identifiers,
2094 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
2095 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
2096 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
2097 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
2098 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
2100 if (Args.hasArg(OPT_fno_lax_vector_conversions))
2101 Opts.LaxVectorConversions = 0;
2102 if (Args.hasArg(OPT_fno_threadsafe_statics))
2103 Opts.ThreadsafeStatics = 0;
2104 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
2105 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
2106 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
2107 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
2108 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind);
2109 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
2111 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti);
2112 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
2113 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL
2114 && Opts.OpenCLVersion >= 200);
2115 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
2116 Opts.CoroutinesTS = Args.hasArg(OPT_fcoroutines_ts);
2117 Opts.ModulesTS = Args.hasArg(OPT_fmodules_ts);
2118 Opts.Modules = Args.hasArg(OPT_fmodules) || Opts.ModulesTS;
2119 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
2120 Opts.ModulesDeclUse =
2121 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
2122 Opts.ModulesLocalVisibility =
2123 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS;
2124 Opts.ModulesCodegen = Args.hasArg(OPT_fmodules_codegen);
2125 Opts.ModulesDebugInfo = Args.hasArg(OPT_fmodules_debuginfo);
2126 Opts.ModulesSearchAll = Opts.Modules &&
2127 !Args.hasArg(OPT_fno_modules_search_all) &&
2128 Args.hasArg(OPT_fmodules_search_all);
2129 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
2130 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules);
2131 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
2132 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
2133 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
2134 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
2135 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
2136 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
2137 if (!Opts.NoBuiltin)
2138 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
2139 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
2140 Opts.RelaxedTemplateTemplateArgs =
2141 Args.hasArg(OPT_frelaxed_template_template_args);
2142 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation);
2143 Opts.AlignedAllocation =
2144 Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation,
2145 Opts.AlignedAllocation);
2146 Opts.AlignedAllocationUnavailable =
2147 Opts.AlignedAllocation && Args.hasArg(OPT_aligned_alloc_unavailable);
2148 Opts.NewAlignOverride =
2149 getLastArgIntValue(Args, OPT_fnew_alignment_EQ, 0, Diags);
2150 if (Opts.NewAlignOverride && !llvm::isPowerOf2_32(Opts.NewAlignOverride)) {
2151 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ);
2152 Diags.Report(diag::err_fe_invalid_alignment) << A->getAsString(Args)
2154 Opts.NewAlignOverride = 0;
2156 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts);
2157 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
2158 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
2159 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
2160 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
2161 Opts.InstantiationDepth =
2162 getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags);
2164 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
2165 Opts.ConstexprCallDepth =
2166 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
2167 Opts.ConstexprStepLimit =
2168 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
2169 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
2170 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
2171 Opts.NumLargeByValueCopy =
2172 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
2173 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
2174 Opts.ObjCConstantStringClass =
2175 Args.getLastArgValue(OPT_fconstant_string_class);
2176 Opts.ObjCDefaultSynthProperties =
2177 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
2178 Opts.EncodeExtendedBlockSig =
2179 Args.hasArg(OPT_fencode_extended_block_signature);
2180 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
2181 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
2182 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
2183 Opts.AlignDouble = Args.hasArg(OPT_malign_double);
2184 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2185 Opts.PIE = Args.hasArg(OPT_pic_is_pie);
2186 Opts.Static = Args.hasArg(OPT_static_define);
2187 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
2188 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
2189 || Args.hasArg(OPT_fdump_record_layouts);
2190 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
2191 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
2192 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
2193 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
2194 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
2195 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
2196 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
2197 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
2198 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
2199 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
2200 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
2201 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
2202 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name_EQ);
2203 Opts.AppExt = Args.hasArg(OPT_fapplication_extension);
2204 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature);
2205 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end());
2206 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type);
2207 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns);
2208 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns
2210 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns)
2211 | Opts.NativeHalfArgsAndReturns;
2212 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm);
2214 // __declspec is enabled by default for the PS4 by the driver, and also
2215 // enabled for Microsoft Extensions or Borland Extensions, here.
2217 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a
2218 // CUDA extension. However, it is required for supporting
2219 // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has
2220 // been rewritten in terms of something more generic, remove the Opts.CUDA
2222 Opts.DeclSpecKeyword =
2223 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec,
2224 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA));
2226 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
2227 switch (llvm::StringSwitch<unsigned>(A->getValue())
2228 .Case("target", LangOptions::ASMM_Target)
2229 .Case("no", LangOptions::ASMM_Off)
2230 .Case("yes", LangOptions::ASMM_On)
2233 Diags.Report(diag::err_drv_invalid_value)
2234 << "-faddress-space-map-mangling=" << A->getValue();
2236 case LangOptions::ASMM_Target:
2237 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
2239 case LangOptions::ASMM_On:
2240 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
2242 case LangOptions::ASMM_Off:
2243 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
2248 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
2249 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
2250 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
2253 LangOptions::PPTMK_FullGeneralitySingleInheritance)
2255 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
2257 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
2258 .Default(LangOptions::PPTMK_BestCase);
2259 if (InheritanceModel == LangOptions::PPTMK_BestCase)
2260 Diags.Report(diag::err_drv_invalid_value)
2261 << "-fms-memptr-rep=" << A->getValue();
2263 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
2266 // Check for MS default calling conventions being specified.
2267 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) {
2268 LangOptions::DefaultCallingConvention DefaultCC =
2269 llvm::StringSwitch<LangOptions::DefaultCallingConvention>(
2271 .Case("cdecl", LangOptions::DCC_CDecl)
2272 .Case("fastcall", LangOptions::DCC_FastCall)
2273 .Case("stdcall", LangOptions::DCC_StdCall)
2274 .Case("vectorcall", LangOptions::DCC_VectorCall)
2275 .Default(LangOptions::DCC_None);
2276 if (DefaultCC == LangOptions::DCC_None)
2277 Diags.Report(diag::err_drv_invalid_value)
2278 << "-fdefault-calling-conv=" << A->getValue();
2280 llvm::Triple T(TargetOpts.Triple);
2281 llvm::Triple::ArchType Arch = T.getArch();
2282 bool emitError = (DefaultCC == LangOptions::DCC_FastCall ||
2283 DefaultCC == LangOptions::DCC_StdCall) &&
2284 Arch != llvm::Triple::x86;
2285 emitError |= DefaultCC == LangOptions::DCC_VectorCall &&
2286 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64);
2288 Diags.Report(diag::err_drv_argument_not_allowed_with)
2289 << A->getSpelling() << T.getTriple();
2291 Opts.setDefaultCallingConv(DefaultCC);
2295 if (Arg *A = Args.getLastArg(OPT_mrtd)) {
2296 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None)
2297 Diags.Report(diag::err_drv_argument_not_allowed_with)
2298 << A->getSpelling() << "-fdefault-calling-conv";
2300 llvm::Triple T(TargetOpts.Triple);
2301 if (T.getArch() != llvm::Triple::x86)
2302 Diags.Report(diag::err_drv_argument_not_allowed_with)
2303 << A->getSpelling() << T.getTriple();
2305 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall);
2309 // Check if -fopenmp is specified.
2310 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0;
2312 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls);
2313 Opts.OpenMPIsDevice =
2314 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device);
2318 getLastArgIntValue(Args, OPT_fopenmp_version_EQ, Opts.OpenMP, Diags);
2320 Opts.OpenMP = Version;
2321 // Provide diagnostic when a given target is not expected to be an OpenMP
2323 if (!Opts.OpenMPIsDevice) {
2324 switch (T.getArch()) {
2327 // Add unsupported host targets here:
2328 case llvm::Triple::nvptx:
2329 case llvm::Triple::nvptx64:
2330 Diags.Report(clang::diag::err_drv_omp_host_target_not_supported)
2331 << TargetOpts.Triple;
2337 // Get the OpenMP target triples if any.
2338 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) {
2340 for (unsigned i = 0; i < A->getNumValues(); ++i) {
2341 llvm::Triple TT(A->getValue(i));
2343 if (TT.getArch() == llvm::Triple::UnknownArch)
2344 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i);
2346 Opts.OMPTargetTriples.push_back(TT);
2350 // Get OpenMP host file path if any and report if a non existent file is
2352 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) {
2353 Opts.OMPHostIRFile = A->getValue();
2354 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile))
2355 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found)
2356 << Opts.OMPHostIRFile;
2359 // Record whether the __DEPRECATED define was requested.
2360 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
2361 OPT_fno_deprecated_macro,
2364 // FIXME: Eliminate this dependency.
2365 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
2366 OptSize = getOptimizationLevelSize(Args);
2367 Opts.Optimize = Opt != 0;
2368 Opts.OptimizeSize = OptSize != 0;
2370 // This is the __NO_INLINE__ define, which just depends on things like the
2371 // optimization level and -fno-inline, not actually whether the backend has
2372 // inlining enabled.
2373 Opts.NoInlineDefine = !Opts.Optimize;
2374 if (Arg *InlineArg = Args.getLastArg(
2375 options::OPT_finline_functions, options::OPT_finline_hint_functions,
2376 options::OPT_fno_inline_functions, options::OPT_fno_inline))
2377 if (InlineArg->getOption().matches(options::OPT_fno_inline))
2378 Opts.NoInlineDefine = true;
2380 Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
2381 Args.hasArg(OPT_cl_fast_relaxed_math);
2382 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
2383 Args.hasArg(OPT_cl_finite_math_only) ||
2384 Args.hasArg(OPT_cl_fast_relaxed_math);
2385 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
2386 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
2387 Args.hasArg(OPT_cl_fast_relaxed_math);
2389 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
2390 StringRef Val = A->getValue();
2392 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast);
2393 else if (Val == "on")
2394 Opts.setDefaultFPContractMode(LangOptions::FPC_On);
2395 else if (Val == "off")
2396 Opts.setDefaultFPContractMode(LangOptions::FPC_Off);
2398 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
2401 Opts.RetainCommentsFromSystemHeaders =
2402 Args.hasArg(OPT_fretain_comments_from_system_headers);
2404 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
2407 Diags.Report(diag::err_drv_invalid_value)
2408 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
2410 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
2411 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
2412 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
2413 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
2416 // Parse -fsanitize= arguments.
2417 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2418 Diags, Opts.Sanitize);
2419 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
2420 Opts.SanitizeAddressFieldPadding =
2421 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
2422 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist);
2424 // -fxray-instrument
2425 Opts.XRayInstrument =
2426 Args.hasFlag(OPT_fxray_instrument, OPT_fnoxray_instrument, false);
2428 // -fxray-{always,never}-instrument= filenames.
2429 Opts.XRayAlwaysInstrumentFiles =
2430 Args.getAllArgValues(OPT_fxray_always_instrument);
2431 Opts.XRayNeverInstrumentFiles =
2432 Args.getAllArgValues(OPT_fxray_never_instrument);
2434 // -fallow-editor-placeholders
2435 Opts.AllowEditorPlaceholders = Args.hasArg(OPT_fallow_editor_placeholders);
2438 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) {
2440 case frontend::ASTDeclList:
2441 case frontend::ASTDump:
2442 case frontend::ASTPrint:
2443 case frontend::ASTView:
2444 case frontend::EmitAssembly:
2445 case frontend::EmitBC:
2446 case frontend::EmitHTML:
2447 case frontend::EmitLLVM:
2448 case frontend::EmitLLVMOnly:
2449 case frontend::EmitCodeGenOnly:
2450 case frontend::EmitObj:
2451 case frontend::FixIt:
2452 case frontend::GenerateModule:
2453 case frontend::GenerateModuleInterface:
2454 case frontend::GeneratePCH:
2455 case frontend::GeneratePTH:
2456 case frontend::ParseSyntaxOnly:
2457 case frontend::ModuleFileInfo:
2458 case frontend::VerifyPCH:
2459 case frontend::PluginAction:
2460 case frontend::PrintDeclContext:
2461 case frontend::RewriteObjC:
2462 case frontend::RewriteTest:
2463 case frontend::RunAnalysis:
2464 case frontend::MigrateSource:
2467 case frontend::DumpRawTokens:
2468 case frontend::DumpTokens:
2469 case frontend::InitOnly:
2470 case frontend::PrintPreamble:
2471 case frontend::PrintPreprocessedInput:
2472 case frontend::RewriteMacros:
2473 case frontend::RunPreprocessorOnly:
2476 llvm_unreachable("invalid frontend action");
2479 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
2480 FileManager &FileMgr,
2481 DiagnosticsEngine &Diags,
2482 frontend::ActionKind Action) {
2483 using namespace options;
2484 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
2485 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
2486 if (const Arg *A = Args.getLastArg(OPT_token_cache))
2487 Opts.TokenCache = A->getValue();
2489 Opts.TokenCache = Opts.ImplicitPTHInclude;
2490 Opts.UsePredefines = !Args.hasArg(OPT_undef);
2491 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
2492 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
2493 Opts.AllowPCHWithCompilerErrors = Args.hasArg(OPT_fallow_pch_with_errors);
2495 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
2496 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl))
2497 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
2499 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
2500 StringRef Value(A->getValue());
2501 size_t Comma = Value.find(',');
2503 unsigned EndOfLine = 0;
2505 if (Comma == StringRef::npos ||
2506 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
2507 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
2508 Diags.Report(diag::err_drv_preamble_format);
2510 Opts.PrecompiledPreambleBytes.first = Bytes;
2511 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
2515 // Add macros from the command line.
2516 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) {
2517 if (A->getOption().matches(OPT_D))
2518 Opts.addMacroDef(A->getValue());
2520 Opts.addMacroUndef(A->getValue());
2523 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
2525 // Add the ordered list of -includes.
2526 for (const Arg *A : Args.filtered(OPT_include))
2527 Opts.Includes.emplace_back(A->getValue());
2529 for (const Arg *A : Args.filtered(OPT_chain_include))
2530 Opts.ChainedIncludes.emplace_back(A->getValue());
2532 for (const Arg *A : Args.filtered(OPT_remap_file)) {
2533 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';');
2535 if (Split.second.empty()) {
2536 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
2540 Opts.addRemappedFile(Split.first, Split.second);
2543 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
2544 StringRef Name = A->getValue();
2545 unsigned Library = llvm::StringSwitch<unsigned>(Name)
2546 .Case("libc++", ARCXX_libcxx)
2547 .Case("libstdc++", ARCXX_libstdcxx)
2548 .Case("none", ARCXX_nolib)
2551 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
2553 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
2556 // Always avoid lexing editor placeholders when we're just running the
2557 // preprocessor as we never want to emit the
2558 // "editor placeholder in source file" error in PP only mode.
2559 if (isStrictlyPreprocessorAction(Action))
2560 Opts.LexEditorPlaceholders = false;
2563 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
2565 frontend::ActionKind Action) {
2566 using namespace options;
2568 if (isStrictlyPreprocessorAction(Action))
2569 Opts.ShowCPP = !Args.hasArg(OPT_dM);
2573 Opts.ShowComments = Args.hasArg(OPT_C);
2574 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
2575 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
2576 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
2577 Opts.ShowIncludeDirectives = Args.hasArg(OPT_dI);
2578 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
2579 Opts.RewriteImports = Args.hasArg(OPT_frewrite_imports);
2580 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives);
2583 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args,
2584 DiagnosticsEngine &Diags) {
2585 using namespace options;
2586 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
2587 if (Arg *A = Args.getLastArg(OPT_meabi)) {
2588 StringRef Value = A->getValue();
2589 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value)
2590 .Case("default", llvm::EABI::Default)
2591 .Case("4", llvm::EABI::EABI4)
2592 .Case("5", llvm::EABI::EABI5)
2593 .Case("gnu", llvm::EABI::GNU)
2594 .Default(llvm::EABI::Unknown);
2595 if (EABIVersion == llvm::EABI::Unknown)
2596 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
2599 Opts.EABIVersion = EABIVersion;
2601 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
2602 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
2603 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
2604 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
2605 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
2606 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ);
2607 // Use the default target triple if unspecified.
2608 if (Opts.Triple.empty())
2609 Opts.Triple = llvm::sys::getDefaultTargetTriple();
2610 Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ);
2613 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
2614 const char *const *ArgBegin,
2615 const char *const *ArgEnd,
2616 DiagnosticsEngine &Diags) {
2617 bool Success = true;
2619 // Parse the arguments.
2620 std::unique_ptr<OptTable> Opts = createDriverOptTable();
2621 const unsigned IncludedFlagsBitmask = options::CC1Option;
2622 unsigned MissingArgIndex, MissingArgCount;
2624 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex,
2625 MissingArgCount, IncludedFlagsBitmask);
2626 LangOptions &LangOpts = *Res.getLangOpts();
2628 // Check for missing argument error.
2629 if (MissingArgCount) {
2630 Diags.Report(diag::err_drv_missing_argument)
2631 << Args.getArgString(MissingArgIndex) << MissingArgCount;
2635 // Issue errors on unknown arguments.
2636 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) {
2637 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args);
2641 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags);
2642 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args);
2643 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args);
2645 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags,
2646 false /*DefaultDiagColor*/, false /*DefaultShowOpt*/);
2647 ParseCommentArgs(LangOpts.CommentOpts, Args);
2648 ParseFileSystemArgs(Res.getFileSystemOpts(), Args);
2649 // FIXME: We shouldn't have to pass the DashX option around here
2650 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags,
2651 LangOpts.IsHeaderFile);
2652 ParseTargetArgs(Res.getTargetOpts(), Args, Diags);
2653 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags,
2654 Res.getTargetOpts());
2655 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args,
2656 Res.getFileSystemOpts().WorkingDir);
2657 if (DashX.getFormat() == InputKind::Precompiled ||
2658 DashX.getLanguage() == InputKind::LLVM_IR) {
2659 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the
2660 // PassManager in BackendUtil.cpp. They need to be initializd no matter
2661 // what the input type is.
2662 if (Args.hasArg(OPT_fobjc_arc))
2663 LangOpts.ObjCAutoRefCount = 1;
2664 // PIClevel and PIELevel are needed during code generation and this should be
2665 // set regardless of the input type.
2666 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2667 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie);
2668 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2669 Diags, LangOpts.Sanitize);
2671 // Other LangOpts are only initialzed when the input is not AST or LLVM IR.
2672 // FIXME: Should we really be calling this for an InputKind::Asm input?
2673 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(),
2674 Res.getPreprocessorOpts(), Diags);
2675 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2676 LangOpts.ObjCExceptions = 1;
2679 if (LangOpts.CUDA) {
2680 // During CUDA device-side compilation, the aux triple is the
2681 // triple used for host compilation.
2682 if (LangOpts.CUDAIsDevice)
2683 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
2686 // Set the triple of the host for OpenMP device compile.
2687 if (LangOpts.OpenMPIsDevice)
2688 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
2690 // FIXME: Override value name discarding when asan or msan is used because the
2691 // backend passes depend on the name of the alloca in order to print out
2693 Res.getCodeGenOpts().DiscardValueNames &=
2694 !LangOpts.Sanitize.has(SanitizerKind::Address) &&
2695 !LangOpts.Sanitize.has(SanitizerKind::Memory);
2697 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
2698 // PCH file and find the original header name. Remove the need to do that in
2699 // ParsePreprocessorArgs and remove the FileManager
2700 // parameters from the function and the "FileManager.h" #include.
2701 FileManager FileMgr(Res.getFileSystemOpts());
2702 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags,
2703 Res.getFrontendOpts().ProgramAction);
2704 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args,
2705 Res.getFrontendOpts().ProgramAction);
2707 // Turn on -Wspir-compat for SPIR target.
2708 llvm::Triple T(Res.getTargetOpts().Triple);
2709 auto Arch = T.getArch();
2710 if (Arch == llvm::Triple::spir || Arch == llvm::Triple::spir64) {
2711 Res.getDiagnosticOpts().Warnings.push_back("spir-compat");
2716 std::string CompilerInvocation::getModuleHash() const {
2717 // Note: For QoI reasons, the things we use as a hash here should all be
2718 // dumped via the -module-info flag.
2719 using llvm::hash_code;
2720 using llvm::hash_value;
2721 using llvm::hash_combine;
2723 // Start the signature with the compiler version.
2724 // FIXME: We'd rather use something more cryptographically sound than
2725 // CityHash, but this will do for now.
2726 hash_code code = hash_value(getClangFullRepositoryVersion());
2728 // Extend the signature with the language options
2729 #define LANGOPT(Name, Bits, Default, Description) \
2730 code = hash_combine(code, LangOpts->Name);
2731 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2732 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
2733 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
2734 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
2735 #include "clang/Basic/LangOptions.def"
2737 for (StringRef Feature : LangOpts->ModuleFeatures)
2738 code = hash_combine(code, Feature);
2740 // Extend the signature with the target options.
2741 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
2743 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
2744 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
2746 // Extend the signature with preprocessor options.
2747 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
2748 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
2749 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
2751 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator
2752 I = getPreprocessorOpts().Macros.begin(),
2753 IEnd = getPreprocessorOpts().Macros.end();
2755 // If we're supposed to ignore this macro for the purposes of modules,
2756 // don't put it into the hash.
2757 if (!hsOpts.ModulesIgnoreMacros.empty()) {
2758 // Check whether we're ignoring this macro.
2759 StringRef MacroDef = I->first;
2760 if (hsOpts.ModulesIgnoreMacros.count(
2761 llvm::CachedHashString(MacroDef.split('=').first)))
2765 code = hash_combine(code, I->first, I->second);
2768 // Extend the signature with the sysroot and other header search options.
2769 code = hash_combine(code, hsOpts.Sysroot,
2770 hsOpts.ModuleFormat,
2771 hsOpts.UseDebugInfo,
2772 hsOpts.UseBuiltinIncludes,
2773 hsOpts.UseStandardSystemIncludes,
2774 hsOpts.UseStandardCXXIncludes,
2776 hsOpts.ModulesValidateDiagnosticOptions);
2777 code = hash_combine(code, hsOpts.ResourceDir);
2779 // Extend the signature with the user build path.
2780 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
2782 // Extend the signature with the module file extensions.
2783 const FrontendOptions &frontendOpts = getFrontendOpts();
2784 for (const auto &ext : frontendOpts.ModuleFileExtensions) {
2785 code = ext->hashExtension(code);
2788 // Extend the signature with the enabled sanitizers, if at least one is
2789 // enabled. Sanitizers which cannot affect AST generation aren't hashed.
2790 SanitizerSet SanHash = LangOpts->Sanitize;
2791 SanHash.clear(getPPTransparentSanitizers());
2792 if (!SanHash.empty())
2793 code = hash_combine(code, SanHash.Mask);
2795 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
2800 template<typename IntTy>
2801 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
2803 DiagnosticsEngine *Diags) {
2804 IntTy Res = Default;
2805 if (Arg *A = Args.getLastArg(Id)) {
2806 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
2808 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
2816 // Declared in clang/Frontend/Utils.h.
2817 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
2818 DiagnosticsEngine *Diags) {
2819 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
2822 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
2824 DiagnosticsEngine *Diags) {
2825 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
2828 void BuryPointer(const void *Ptr) {
2829 // This function may be called only a small fixed amount of times per each
2830 // invocation, otherwise we do actually have a leak which we want to report.
2831 // If this function is called more than kGraveYardMaxSize times, the pointers
2832 // will not be properly buried and a leak detector will report a leak, which
2833 // is what we want in such case.
2834 static const size_t kGraveYardMaxSize = 16;
2835 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2836 static std::atomic<unsigned> GraveYardSize;
2837 unsigned Idx = GraveYardSize++;
2838 if (Idx >= kGraveYardMaxSize)
2840 GraveYard[Idx] = Ptr;
2843 IntrusiveRefCntPtr<vfs::FileSystem>
2844 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2845 DiagnosticsEngine &Diags) {
2846 return createVFSFromCompilerInvocation(CI, Diags, vfs::getRealFileSystem());
2849 IntrusiveRefCntPtr<vfs::FileSystem>
2850 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2851 DiagnosticsEngine &Diags,
2852 IntrusiveRefCntPtr<vfs::FileSystem> BaseFS) {
2853 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2856 IntrusiveRefCntPtr<vfs::OverlayFileSystem> Overlay(
2857 new vfs::OverlayFileSystem(BaseFS));
2858 // earlier vfs files are on the bottom
2859 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2860 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2861 BaseFS->getBufferForFile(File);
2863 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2864 return IntrusiveRefCntPtr<vfs::FileSystem>();
2867 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML(
2868 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File);
2870 Diags.Report(diag::err_invalid_vfs_overlay) << File;
2871 return IntrusiveRefCntPtr<vfs::FileSystem>();
2873 Overlay->pushOverlay(FS);
2877 } // end namespace clang