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 Opts.CoverageMapping =
577 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false);
578 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
579 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
580 Opts.PreserveAsmComments = !Args.hasArg(OPT_fno_preserve_as_comments);
581 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
582 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
583 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
584 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
585 Opts.CodeModel = getCodeModel(Args, Diags);
586 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
588 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg));
589 Opts.DisableFree = Args.hasArg(OPT_disable_free);
590 Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names);
591 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
592 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
593 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable) ||
594 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
595 Args.hasArg(OPT_cl_fast_relaxed_math);
596 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
597 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
598 Args.hasArg(OPT_cl_finite_math_only) ||
599 Args.hasArg(OPT_cl_fast_relaxed_math));
600 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
601 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
602 Args.hasArg(OPT_cl_finite_math_only) ||
603 Args.hasArg(OPT_cl_fast_relaxed_math));
604 Opts.NoSignedZeros = (Args.hasArg(OPT_fno_signed_zeros) ||
605 Args.hasArg(OPT_cl_no_signed_zeros) ||
606 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
607 Args.hasArg(OPT_cl_fast_relaxed_math));
608 Opts.FlushDenorm = Args.hasArg(OPT_cl_denorms_are_zero);
609 Opts.CorrectlyRoundedDivSqrt =
610 Args.hasArg(OPT_cl_fp32_correctly_rounded_divide_sqrt);
611 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math);
612 Opts.NoTrappingMath = Args.hasArg(OPT_fno_trapping_math);
613 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
614 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
615 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
616 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
617 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
618 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
619 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
620 Opts.IncrementalLinkerCompatible =
621 Args.hasArg(OPT_mincremental_linker_compatible);
622 Opts.PIECopyRelocations =
623 Args.hasArg(OPT_mpie_copy_relocations);
624 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
625 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
626 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
627 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
628 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
629 Opts.StrictReturn = !Args.hasArg(OPT_fno_strict_return);
630 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers);
631 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
632 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
633 Args.hasArg(OPT_cl_fast_relaxed_math);
634 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
635 Opts.RelocationModel = getRelocModel(Args, Diags);
636 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
637 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
638 Diags.Report(diag::err_drv_invalid_value)
639 << Args.getLastArg(OPT_mthread_model)->getAsString(Args)
641 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
642 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
644 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
645 OPT_fno_function_sections, false);
646 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
647 OPT_fno_data_sections, false);
648 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names,
649 OPT_fno_unique_section_names, true);
651 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
653 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables);
655 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ);
656 Opts.EmitSummaryIndex = false;
657 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) {
658 StringRef S = A->getValue();
660 Opts.EmitSummaryIndex = true;
661 else if (S != "full")
662 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S;
664 Opts.LTOUnit = Args.hasFlag(OPT_flto_unit, OPT_fno_lto_unit, false);
665 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) {
666 if (IK.getLanguage() != InputKind::LLVM_IR)
667 Diags.Report(diag::err_drv_argument_only_allowed_with)
668 << A->getAsString(Args) << "-x ir";
669 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ);
671 Opts.ThinLinkBitcodeFile = Args.getLastArgValue(OPT_fthin_link_bitcode_EQ);
673 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile);
675 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
676 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
678 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
679 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
681 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
682 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
683 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
684 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
685 Opts.CoverageDataFile = Args.getLastArgValue(OPT_coverage_data_file);
686 Opts.CoverageNotesFile = Args.getLastArgValue(OPT_coverage_notes_file);
687 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
688 Opts.CoverageNoFunctionNamesInData =
689 Args.hasArg(OPT_coverage_no_function_names_in_data);
690 Opts.CoverageExitBlockBeforeBody =
691 Args.hasArg(OPT_coverage_exit_block_before_body);
692 if (Args.hasArg(OPT_coverage_version_EQ)) {
693 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
694 if (CoverageVersion.size() != 4) {
695 Diags.Report(diag::err_drv_invalid_value)
696 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
699 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
703 // Handle -fembed-bitcode option.
704 if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) {
705 StringRef Name = A->getValue();
706 unsigned Model = llvm::StringSwitch<unsigned>(Name)
707 .Case("off", CodeGenOptions::Embed_Off)
708 .Case("all", CodeGenOptions::Embed_All)
709 .Case("bitcode", CodeGenOptions::Embed_Bitcode)
710 .Case("marker", CodeGenOptions::Embed_Marker)
713 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
716 Opts.setEmbedBitcode(
717 static_cast<CodeGenOptions::EmbedBitcodeKind>(Model));
719 // FIXME: For backend options that are not yet recorded as function
720 // attributes in the IR, keep track of them so we can embed them in a
721 // separate data section and use them when building the bitcode.
722 if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) {
723 for (const auto &A : Args) {
724 // Do not encode output and input.
725 if (A->getOption().getID() == options::OPT_o ||
726 A->getOption().getID() == options::OPT_INPUT ||
727 A->getOption().getID() == options::OPT_x ||
728 A->getOption().getID() == options::OPT_fembed_bitcode ||
729 (A->getOption().getGroup().isValid() &&
730 A->getOption().getGroup().getID() == options::OPT_W_Group))
733 A->render(Args, ASL);
734 for (const auto &arg : ASL) {
735 StringRef ArgStr(arg);
736 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end());
737 // using \00 to seperate each commandline options.
738 Opts.CmdArgs.push_back('\0');
743 Opts.PreserveVec3Type = Args.hasArg(OPT_fpreserve_vec3_type);
744 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
745 Opts.XRayInstrumentFunctions = Args.hasArg(OPT_fxray_instrument);
746 Opts.XRayInstructionThreshold =
747 getLastArgIntValue(Args, OPT_fxray_instruction_threshold_EQ, 200, Diags);
748 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
749 Opts.CallFEntry = Args.hasArg(OPT_mfentry);
750 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
752 if (const Arg *A = Args.getLastArg(OPT_compress_debug_sections,
753 OPT_compress_debug_sections_EQ)) {
754 if (A->getOption().getID() == OPT_compress_debug_sections) {
755 // TODO: be more clever about the compression type auto-detection
756 Opts.setCompressDebugSections(llvm::DebugCompressionType::GNU);
758 auto DCT = llvm::StringSwitch<llvm::DebugCompressionType>(A->getValue())
759 .Case("none", llvm::DebugCompressionType::None)
760 .Case("zlib", llvm::DebugCompressionType::Z)
761 .Case("zlib-gnu", llvm::DebugCompressionType::GNU)
762 .Default(llvm::DebugCompressionType::None);
763 Opts.setCompressDebugSections(DCT);
767 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations);
768 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
769 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) {
770 CodeGenOptions::BitcodeFileToLink F;
771 F.Filename = A->getValue();
772 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) {
773 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded;
774 // When linking CUDA bitcode, propagate function attributes so that
775 // e.g. libdevice gets fast-math attrs if we're building with fast-math.
776 F.PropagateAttrs = true;
777 F.Internalize = true;
779 Opts.LinkBitcodeFiles.push_back(F);
781 Opts.SanitizeCoverageType =
782 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags);
783 Opts.SanitizeCoverageIndirectCalls =
784 Args.hasArg(OPT_fsanitize_coverage_indirect_calls);
785 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb);
786 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp);
787 Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div);
788 Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep);
789 Opts.SanitizeCoverage8bitCounters =
790 Args.hasArg(OPT_fsanitize_coverage_8bit_counters);
791 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc);
792 Opts.SanitizeCoverageTracePCGuard =
793 Args.hasArg(OPT_fsanitize_coverage_trace_pc_guard);
794 Opts.SanitizeCoverageNoPrune = Args.hasArg(OPT_fsanitize_coverage_no_prune);
795 Opts.SanitizeCoverageInline8bitCounters =
796 Args.hasArg(OPT_fsanitize_coverage_inline_8bit_counters);
797 Opts.SanitizeMemoryTrackOrigins =
798 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
799 Opts.SanitizeMemoryUseAfterDtor =
800 Args.hasArg(OPT_fsanitize_memory_use_after_dtor);
801 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso);
802 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats);
803 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_after_scope,
804 OPT_fno_sanitize_address_use_after_scope)) {
805 Opts.SanitizeAddressUseAfterScope =
806 A->getOption().getID() == OPT_fsanitize_address_use_after_scope;
808 Opts.SanitizeAddressGlobalsDeadStripping =
809 Args.hasArg(OPT_fsanitize_address_globals_dead_stripping);
811 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
812 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
813 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
814 StringRef Val = A->getValue();
815 unsigned StackAlignment = Opts.StackAlignment;
816 Val.getAsInteger(10, StackAlignment);
817 Opts.StackAlignment = StackAlignment;
820 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) {
821 StringRef Val = A->getValue();
822 unsigned StackProbeSize = Opts.StackProbeSize;
823 Val.getAsInteger(0, StackProbeSize);
824 Opts.StackProbeSize = StackProbeSize;
827 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
828 StringRef Name = A->getValue();
829 unsigned Method = llvm::StringSwitch<unsigned>(Name)
830 .Case("legacy", CodeGenOptions::Legacy)
831 .Case("non-legacy", CodeGenOptions::NonLegacy)
832 .Case("mixed", CodeGenOptions::Mixed)
835 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
838 Opts.setObjCDispatchMethod(
839 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
844 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false);
846 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
847 StringRef Name = A->getValue();
848 unsigned Model = llvm::StringSwitch<unsigned>(Name)
849 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
850 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
851 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
852 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
855 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
858 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
862 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) {
863 StringRef Val = A->getValue();
865 Opts.FPDenormalMode = "ieee";
866 else if (Val == "preserve-sign")
867 Opts.FPDenormalMode = "preserve-sign";
868 else if (Val == "positive-zero")
869 Opts.FPDenormalMode = "positive-zero";
871 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
874 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
875 if (A->getOption().matches(OPT_fpcc_struct_return)) {
876 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
878 assert(A->getOption().matches(OPT_freg_struct_return));
879 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
883 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
884 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option);
885 bool NeedLocTracking = false;
887 Opts.OptRecordFile = Args.getLastArgValue(OPT_opt_record_file);
888 if (!Opts.OptRecordFile.empty())
889 NeedLocTracking = true;
891 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
892 Opts.OptimizationRemarkPattern =
893 GenerateOptimizationRemarkRegex(Diags, Args, A);
894 NeedLocTracking = true;
897 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
898 Opts.OptimizationRemarkMissedPattern =
899 GenerateOptimizationRemarkRegex(Diags, Args, A);
900 NeedLocTracking = true;
903 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
904 Opts.OptimizationRemarkAnalysisPattern =
905 GenerateOptimizationRemarkRegex(Diags, Args, A);
906 NeedLocTracking = true;
909 Opts.DiagnosticsWithHotness =
910 Args.hasArg(options::OPT_fdiagnostics_show_hotness);
911 bool UsingSampleProfile = !Opts.SampleProfileFile.empty();
912 bool UsingProfile = UsingSampleProfile ||
913 (Opts.getProfileUse() != CodeGenOptions::ProfileNone);
915 if (Opts.DiagnosticsWithHotness && !UsingProfile)
916 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
917 << "-fdiagnostics-show-hotness";
919 Opts.DiagnosticsHotnessThreshold = getLastArgUInt64Value(
920 Args, options::OPT_fdiagnostics_hotness_threshold_EQ, 0);
921 if (Opts.DiagnosticsHotnessThreshold > 0 && !UsingProfile)
922 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
923 << "-fdiagnostics-hotness-threshold=";
925 // If the user requested to use a sample profile for PGO, then the
926 // backend will need to track source location information so the profile
927 // can be incorporated into the IR.
928 if (UsingSampleProfile)
929 NeedLocTracking = true;
931 // If the user requested a flag that requires source locations available in
932 // the backend, make sure that the backend tracks source location information.
933 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo)
934 Opts.setDebugInfo(codegenoptions::LocTrackingOnly);
936 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
938 // Parse -fsanitize-recover= arguments.
939 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
940 parseSanitizerKinds("-fsanitize-recover=",
941 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
942 Opts.SanitizeRecover);
943 parseSanitizerKinds("-fsanitize-trap=",
944 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags,
947 Opts.CudaGpuBinaryFileNames =
948 Args.getAllArgValues(OPT_fcuda_include_gpubinary);
950 Opts.Backchain = Args.hasArg(OPT_mbackchain);
952 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue(
953 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags);
958 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
960 using namespace options;
961 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
962 Opts.Targets = Args.getAllArgValues(OPT_MT);
963 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
964 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
965 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
966 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
967 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
968 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
969 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
970 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
971 Opts.ModuleDependencyOutputDir =
972 Args.getLastArgValue(OPT_module_dependency_dir);
973 if (Args.hasArg(OPT_MV))
974 Opts.OutputFormat = DependencyOutputFormat::NMake;
975 // Add sanitizer blacklists as extra dependencies.
976 // They won't be discovered by the regular preprocessor, so
977 // we let make / ninja to know about this implicit dependency.
978 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry);
979 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
980 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(),
984 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) {
985 // Color diagnostics default to auto ("on" if terminal supports) in the driver
986 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color.
987 // Support both clang's -f[no-]color-diagnostics and gcc's
988 // -f[no-]diagnostics-colors[=never|always|auto].
993 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off;
994 for (Arg *A : Args) {
995 const Option &O = A->getOption();
996 if (O.matches(options::OPT_fcolor_diagnostics) ||
997 O.matches(options::OPT_fdiagnostics_color)) {
998 ShowColors = Colors_On;
999 } else if (O.matches(options::OPT_fno_color_diagnostics) ||
1000 O.matches(options::OPT_fno_diagnostics_color)) {
1001 ShowColors = Colors_Off;
1002 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
1003 StringRef Value(A->getValue());
1004 if (Value == "always")
1005 ShowColors = Colors_On;
1006 else if (Value == "never")
1007 ShowColors = Colors_Off;
1008 else if (Value == "auto")
1009 ShowColors = Colors_Auto;
1012 return ShowColors == Colors_On ||
1013 (ShowColors == Colors_Auto &&
1014 llvm::sys::Process::StandardErrHasColors());
1017 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1018 DiagnosticsEngine *Diags,
1019 bool DefaultDiagColor, bool DefaultShowOpt) {
1020 using namespace options;
1021 bool Success = true;
1023 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
1025 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
1026 Opts.DiagnosticSerializationFile = A->getValue();
1027 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
1028 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
1029 Opts.Pedantic = Args.hasArg(OPT_pedantic);
1030 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
1031 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
1032 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor);
1033 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1034 OPT_fno_show_column,
1036 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1037 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1038 Opts.AbsolutePath = Args.hasArg(OPT_fdiagnostics_absolute_paths);
1039 Opts.ShowOptionNames =
1040 Args.hasFlag(OPT_fdiagnostics_show_option,
1041 OPT_fno_diagnostics_show_option, DefaultShowOpt);
1043 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
1045 // Default behavior is to not to show note include stacks.
1046 Opts.ShowNoteIncludeStack = false;
1047 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1048 OPT_fno_diagnostics_show_note_include_stack))
1049 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1050 Opts.ShowNoteIncludeStack = true;
1052 StringRef ShowOverloads =
1053 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1054 if (ShowOverloads == "best")
1055 Opts.setShowOverloads(Ovl_Best);
1056 else if (ShowOverloads == "all")
1057 Opts.setShowOverloads(Ovl_All);
1061 Diags->Report(diag::err_drv_invalid_value)
1062 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1066 StringRef ShowCategory =
1067 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1068 if (ShowCategory == "none")
1069 Opts.ShowCategories = 0;
1070 else if (ShowCategory == "id")
1071 Opts.ShowCategories = 1;
1072 else if (ShowCategory == "name")
1073 Opts.ShowCategories = 2;
1077 Diags->Report(diag::err_drv_invalid_value)
1078 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1083 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1084 if (Format == "clang")
1085 Opts.setFormat(DiagnosticOptions::Clang);
1086 else if (Format == "msvc")
1087 Opts.setFormat(DiagnosticOptions::MSVC);
1088 else if (Format == "msvc-fallback") {
1089 Opts.setFormat(DiagnosticOptions::MSVC);
1090 Opts.CLFallbackMode = true;
1091 } else if (Format == "vi")
1092 Opts.setFormat(DiagnosticOptions::Vi);
1096 Diags->Report(diag::err_drv_invalid_value)
1097 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1101 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1102 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1103 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
1104 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1105 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None;
1106 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=",
1107 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ),
1109 if (Args.hasArg(OPT_verify_ignore_unexpected))
1110 DiagMask = DiagnosticLevelMask::All;
1111 Opts.setVerifyIgnoreUnexpected(DiagMask);
1112 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
1113 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
1114 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
1115 Opts.MacroBacktraceLimit =
1116 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
1117 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1118 Opts.TemplateBacktraceLimit = getLastArgIntValue(
1119 Args, OPT_ftemplate_backtrace_limit,
1120 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
1121 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
1122 Args, OPT_fconstexpr_backtrace_limit,
1123 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
1124 Opts.SpellCheckingLimit = getLastArgIntValue(
1125 Args, OPT_fspell_checking_limit,
1126 DiagnosticOptions::DefaultSpellCheckingLimit, Diags);
1127 Opts.SnippetLineLimit = getLastArgIntValue(
1128 Args, OPT_fcaret_diagnostics_max_lines,
1129 DiagnosticOptions::DefaultSnippetLineLimit, Diags);
1130 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
1131 DiagnosticOptions::DefaultTabStop, Diags);
1132 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1133 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1135 Diags->Report(diag::warn_ignoring_ftabstop_value)
1136 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1138 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
1139 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
1140 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
1145 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1146 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1149 /// Parse the argument to the -ftest-module-file-extension
1150 /// command-line argument.
1152 /// \returns true on error, false on success.
1153 static bool parseTestModuleFileExtensionArg(StringRef Arg,
1154 std::string &BlockName,
1155 unsigned &MajorVersion,
1156 unsigned &MinorVersion,
1158 std::string &UserInfo) {
1159 SmallVector<StringRef, 5> Args;
1160 Arg.split(Args, ':', 5);
1161 if (Args.size() < 5)
1164 BlockName = Args[0];
1165 if (Args[1].getAsInteger(10, MajorVersion)) return true;
1166 if (Args[2].getAsInteger(10, MinorVersion)) return true;
1167 if (Args[3].getAsInteger(2, Hashed)) return true;
1168 if (Args.size() > 4)
1173 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1174 DiagnosticsEngine &Diags,
1175 bool &IsHeaderFile) {
1176 using namespace options;
1177 Opts.ProgramAction = frontend::ParseSyntaxOnly;
1178 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1179 switch (A->getOption().getID()) {
1181 llvm_unreachable("Invalid option in group!");
1183 Opts.ProgramAction = frontend::ASTDeclList; break;
1185 case OPT_ast_dump_all:
1186 case OPT_ast_dump_lookups:
1187 Opts.ProgramAction = frontend::ASTDump; break;
1189 Opts.ProgramAction = frontend::ASTPrint; break;
1191 Opts.ProgramAction = frontend::ASTView; break;
1192 case OPT_dump_raw_tokens:
1193 Opts.ProgramAction = frontend::DumpRawTokens; break;
1194 case OPT_dump_tokens:
1195 Opts.ProgramAction = frontend::DumpTokens; break;
1197 Opts.ProgramAction = frontend::EmitAssembly; break;
1198 case OPT_emit_llvm_bc:
1199 Opts.ProgramAction = frontend::EmitBC; break;
1201 Opts.ProgramAction = frontend::EmitHTML; break;
1203 Opts.ProgramAction = frontend::EmitLLVM; break;
1204 case OPT_emit_llvm_only:
1205 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1206 case OPT_emit_codegen_only:
1207 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1209 Opts.ProgramAction = frontend::EmitObj; break;
1211 Opts.FixItSuffix = A->getValue();
1214 Opts.ProgramAction = frontend::FixIt; break;
1215 case OPT_emit_module:
1216 Opts.ProgramAction = frontend::GenerateModule; break;
1217 case OPT_emit_module_interface:
1218 Opts.ProgramAction = frontend::GenerateModuleInterface; break;
1220 Opts.ProgramAction = frontend::GeneratePCH; break;
1222 Opts.ProgramAction = frontend::GeneratePTH; break;
1224 Opts.ProgramAction = frontend::InitOnly; break;
1225 case OPT_fsyntax_only:
1226 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1227 case OPT_module_file_info:
1228 Opts.ProgramAction = frontend::ModuleFileInfo; break;
1229 case OPT_verify_pch:
1230 Opts.ProgramAction = frontend::VerifyPCH; break;
1231 case OPT_print_decl_contexts:
1232 Opts.ProgramAction = frontend::PrintDeclContext; break;
1233 case OPT_print_preamble:
1234 Opts.ProgramAction = frontend::PrintPreamble; break;
1236 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1237 case OPT_rewrite_macros:
1238 Opts.ProgramAction = frontend::RewriteMacros; break;
1239 case OPT_rewrite_objc:
1240 Opts.ProgramAction = frontend::RewriteObjC; break;
1241 case OPT_rewrite_test:
1242 Opts.ProgramAction = frontend::RewriteTest; break;
1244 Opts.ProgramAction = frontend::RunAnalysis; break;
1246 Opts.ProgramAction = frontend::MigrateSource; break;
1248 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1252 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1253 Opts.Plugins.emplace_back(A->getValue(0));
1254 Opts.ProgramAction = frontend::PluginAction;
1255 Opts.ActionName = A->getValue();
1257 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1258 for (const Arg *AA : Args.filtered(OPT_plugin_arg))
1259 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1));
1261 for (const std::string &Arg :
1262 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) {
1263 std::string BlockName;
1264 unsigned MajorVersion;
1265 unsigned MinorVersion;
1267 std::string UserInfo;
1268 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion,
1269 MinorVersion, Hashed, UserInfo)) {
1270 Diags.Report(diag::err_test_module_file_extension_format) << Arg;
1275 // Add the testing module file extension.
1276 Opts.ModuleFileExtensions.push_back(
1277 std::make_shared<TestModuleFileExtension>(
1278 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo));
1281 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1282 Opts.CodeCompletionAt =
1283 ParsedSourceLocation::FromString(A->getValue());
1284 if (Opts.CodeCompletionAt.FileName.empty())
1285 Diags.Report(diag::err_drv_invalid_value)
1286 << A->getAsString(Args) << A->getValue();
1288 Opts.DisableFree = Args.hasArg(OPT_disable_free);
1290 Opts.OutputFile = Args.getLastArgValue(OPT_o);
1291 Opts.Plugins = Args.getAllArgValues(OPT_load);
1292 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1293 Opts.ShowHelp = Args.hasArg(OPT_help);
1294 Opts.ShowStats = Args.hasArg(OPT_print_stats);
1295 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1296 Opts.ShowVersion = Args.hasArg(OPT_version);
1297 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1298 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1299 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1300 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
1301 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
1302 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
1303 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
1304 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all);
1305 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
1306 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
1307 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
1308 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
1309 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
1310 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
1311 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ);
1312 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files);
1313 Opts.IncludeTimestamps = !Args.hasArg(OPT_fno_pch_timestamp);
1315 Opts.CodeCompleteOpts.IncludeMacros
1316 = Args.hasArg(OPT_code_completion_macros);
1317 Opts.CodeCompleteOpts.IncludeCodePatterns
1318 = Args.hasArg(OPT_code_completion_patterns);
1319 Opts.CodeCompleteOpts.IncludeGlobals
1320 = !Args.hasArg(OPT_no_code_completion_globals);
1321 Opts.CodeCompleteOpts.IncludeBriefComments
1322 = Args.hasArg(OPT_code_completion_brief_comments);
1324 Opts.OverrideRecordLayoutsFile
1325 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
1327 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple));
1328 Opts.FindPchSource = Args.getLastArgValue(OPT_find_pch_source_EQ);
1329 Opts.StatsFile = Args.getLastArgValue(OPT_stats_file);
1331 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1333 OPT_arcmt_migrate)) {
1334 switch (A->getOption().getID()) {
1336 llvm_unreachable("missed a case");
1337 case OPT_arcmt_check:
1338 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1340 case OPT_arcmt_modify:
1341 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1343 case OPT_arcmt_migrate:
1344 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1348 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
1349 Opts.ARCMTMigrateReportOut
1350 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1351 Opts.ARCMTMigrateEmitARCErrors
1352 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1354 if (Args.hasArg(OPT_objcmt_migrate_literals))
1355 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
1356 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
1357 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
1358 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
1359 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
1360 if (Args.hasArg(OPT_objcmt_migrate_property))
1361 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
1362 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
1363 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
1364 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
1365 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
1366 if (Args.hasArg(OPT_objcmt_migrate_annotation))
1367 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
1368 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
1369 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
1370 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
1371 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
1372 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
1373 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
1374 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
1375 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
1376 if (Args.hasArg(OPT_objcmt_atomic_property))
1377 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
1378 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
1379 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
1380 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
1381 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
1382 if (Args.hasArg(OPT_objcmt_migrate_all))
1383 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
1385 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
1387 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
1388 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
1389 Diags.Report(diag::err_drv_argument_not_allowed_with)
1390 << "ARC migration" << "ObjC migration";
1393 InputKind DashX(InputKind::Unknown);
1394 if (const Arg *A = Args.getLastArg(OPT_x)) {
1395 StringRef XValue = A->getValue();
1397 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'.
1398 // FIXME: Supporting '<lang>-header-cpp-output' would be useful.
1399 bool Preprocessed = XValue.consume_back("-cpp-output");
1400 bool ModuleMap = XValue.consume_back("-module-map");
1402 !Preprocessed && !ModuleMap && XValue.consume_back("-header");
1404 // Principal languages.
1405 DashX = llvm::StringSwitch<InputKind>(XValue)
1406 .Case("c", InputKind::C)
1407 .Case("cl", InputKind::OpenCL)
1408 .Case("cuda", InputKind::CUDA)
1409 .Case("c++", InputKind::CXX)
1410 .Case("objective-c", InputKind::ObjC)
1411 .Case("objective-c++", InputKind::ObjCXX)
1412 .Case("renderscript", InputKind::RenderScript)
1413 .Default(InputKind::Unknown);
1415 // "objc[++]-cpp-output" is an acceptable synonym for
1416 // "objective-c[++]-cpp-output".
1417 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap)
1418 DashX = llvm::StringSwitch<InputKind>(XValue)
1419 .Case("objc", InputKind::ObjC)
1420 .Case("objc++", InputKind::ObjCXX)
1421 .Default(InputKind::Unknown);
1423 // Some special cases cannot be combined with suffixes.
1424 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile)
1425 DashX = llvm::StringSwitch<InputKind>(XValue)
1426 .Case("cpp-output", InputKind(InputKind::C).getPreprocessed())
1427 .Case("assembler-with-cpp", InputKind::Asm)
1428 .Cases("ast", "pcm",
1429 InputKind(InputKind::Unknown, InputKind::Precompiled))
1430 .Case("ir", InputKind::LLVM_IR)
1431 .Default(InputKind::Unknown);
1433 if (DashX.isUnknown())
1434 Diags.Report(diag::err_drv_invalid_value)
1435 << A->getAsString(Args) << A->getValue();
1438 DashX = DashX.getPreprocessed();
1440 DashX = DashX.withFormat(InputKind::ModuleMap);
1443 // '-' is the default input if none is given.
1444 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1445 Opts.Inputs.clear();
1447 Inputs.push_back("-");
1448 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1449 InputKind IK = DashX;
1450 if (IK.isUnknown()) {
1451 IK = FrontendOptions::getInputKindForExtension(
1452 StringRef(Inputs[i]).rsplit('.').second);
1453 // FIXME: Warn on this?
1456 // FIXME: Remove this hack.
1461 // The -emit-module action implicitly takes a module map.
1462 if (Opts.ProgramAction == frontend::GenerateModule &&
1463 IK.getFormat() == InputKind::Source)
1464 IK = IK.withFormat(InputKind::ModuleMap);
1466 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK);
1472 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1474 std::string ClangExecutable =
1475 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1476 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
1478 // Compute the path to the resource directory.
1479 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
1480 SmallString<128> P(Dir);
1481 if (ClangResourceDir != "")
1482 llvm::sys::path::append(P, ClangResourceDir);
1484 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX,
1485 "clang", CLANG_VERSION_STRING);
1490 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args,
1491 const std::string &WorkingDir) {
1492 using namespace options;
1493 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1494 Opts.Verbose = Args.hasArg(OPT_v);
1495 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1496 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1497 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1498 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1499 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1500 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1502 // Canonicalize -fmodules-cache-path before storing it.
1503 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path));
1504 if (!(P.empty() || llvm::sys::path::is_absolute(P))) {
1505 if (WorkingDir.empty())
1506 llvm::sys::fs::make_absolute(P);
1508 llvm::sys::fs::make_absolute(WorkingDir, P);
1510 llvm::sys::path::remove_dots(P);
1511 Opts.ModuleCachePath = P.str();
1513 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
1514 for (const Arg *A : Args.filtered(OPT_fprebuilt_module_path))
1515 Opts.AddPrebuiltModulePath(A->getValue());
1516 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1517 Opts.ModulesHashContent = Args.hasArg(OPT_fmodules_hash_content);
1518 Opts.ModulesValidateDiagnosticOptions =
1519 !Args.hasArg(OPT_fmodules_disable_diagnostic_validation);
1520 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps);
1521 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
1522 Opts.ModuleCachePruneInterval =
1523 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
1524 Opts.ModuleCachePruneAfter =
1525 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
1526 Opts.ModulesValidateOncePerBuildSession =
1527 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
1528 Opts.BuildSessionTimestamp =
1529 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
1530 Opts.ModulesValidateSystemHeaders =
1531 Args.hasArg(OPT_fmodules_validate_system_headers);
1532 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ))
1533 Opts.ModuleFormat = A->getValue();
1535 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) {
1536 StringRef MacroDef = A->getValue();
1537 Opts.ModulesIgnoreMacros.insert(
1538 llvm::CachedHashString(MacroDef.split('=').first));
1541 // Add -I..., -F..., and -index-header-map options in order.
1542 bool IsIndexHeaderMap = false;
1543 bool IsSysrootSpecified =
1544 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot);
1545 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) {
1546 if (A->getOption().matches(OPT_index_header_map)) {
1547 // -index-header-map applies to the next -I or -F.
1548 IsIndexHeaderMap = true;
1552 frontend::IncludeDirGroup Group =
1553 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled;
1555 bool IsFramework = A->getOption().matches(OPT_F);
1556 std::string Path = A->getValue();
1558 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') {
1559 SmallString<32> Buffer;
1560 llvm::sys::path::append(Buffer, Opts.Sysroot,
1561 llvm::StringRef(A->getValue()).substr(1));
1562 Path = Buffer.str();
1565 Opts.AddPath(Path, Group, IsFramework,
1566 /*IgnoreSysroot*/ true);
1567 IsIndexHeaderMap = false;
1570 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1571 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1573 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) {
1574 if (A->getOption().matches(OPT_iprefix))
1575 Prefix = A->getValue();
1576 else if (A->getOption().matches(OPT_iwithprefix))
1577 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true);
1579 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true);
1582 for (const Arg *A : Args.filtered(OPT_idirafter))
1583 Opts.AddPath(A->getValue(), frontend::After, false, true);
1584 for (const Arg *A : Args.filtered(OPT_iquote))
1585 Opts.AddPath(A->getValue(), frontend::Quoted, false, true);
1586 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot))
1587 Opts.AddPath(A->getValue(), frontend::System, false,
1588 !A->getOption().matches(OPT_iwithsysroot));
1589 for (const Arg *A : Args.filtered(OPT_iframework))
1590 Opts.AddPath(A->getValue(), frontend::System, true, true);
1591 for (const Arg *A : Args.filtered(OPT_iframeworkwithsysroot))
1592 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true,
1593 /*IgnoreSysRoot=*/false);
1595 // Add the paths for the various language specific isystem flags.
1596 for (const Arg *A : Args.filtered(OPT_c_isystem))
1597 Opts.AddPath(A->getValue(), frontend::CSystem, false, true);
1598 for (const Arg *A : Args.filtered(OPT_cxx_isystem))
1599 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true);
1600 for (const Arg *A : Args.filtered(OPT_objc_isystem))
1601 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true);
1602 for (const Arg *A : Args.filtered(OPT_objcxx_isystem))
1603 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true);
1605 // Add the internal paths from a driver that detects standard include paths.
1607 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) {
1608 frontend::IncludeDirGroup Group = frontend::System;
1609 if (A->getOption().matches(OPT_internal_externc_isystem))
1610 Group = frontend::ExternCSystem;
1611 Opts.AddPath(A->getValue(), Group, false, true);
1614 // Add the path prefixes which are implicitly treated as being system headers.
1616 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix))
1617 Opts.AddSystemHeaderPrefix(
1618 A->getValue(), A->getOption().matches(OPT_system_header_prefix));
1620 for (const Arg *A : Args.filtered(OPT_ivfsoverlay))
1621 Opts.AddVFSOverlayFile(A->getValue());
1624 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1625 const llvm::Triple &T,
1626 PreprocessorOptions &PPOpts,
1627 LangStandard::Kind LangStd) {
1628 // Set some properties which depend solely on the input kind; it would be nice
1629 // to move these to the language standard, and have the driver resolve the
1630 // input kind + language standard.
1632 // FIXME: Perhaps a better model would be for a single source file to have
1633 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std)
1634 // simultaneously active?
1635 if (IK.getLanguage() == InputKind::Asm) {
1636 Opts.AsmPreprocessor = 1;
1637 } else if (IK.isObjectiveC()) {
1638 Opts.ObjC1 = Opts.ObjC2 = 1;
1641 if (LangStd == LangStandard::lang_unspecified) {
1642 // Based on the base language, pick one.
1643 switch (IK.getLanguage()) {
1644 case InputKind::Unknown:
1645 case InputKind::LLVM_IR:
1646 llvm_unreachable("Invalid input kind!");
1647 case InputKind::OpenCL:
1648 LangStd = LangStandard::lang_opencl10;
1650 case InputKind::CUDA:
1651 LangStd = LangStandard::lang_cuda;
1653 case InputKind::Asm:
1655 // The PS4 uses C99 as the default C standard.
1657 LangStd = LangStandard::lang_gnu99;
1659 LangStd = LangStandard::lang_gnu11;
1661 case InputKind::ObjC:
1662 LangStd = LangStandard::lang_gnu11;
1664 case InputKind::CXX:
1665 case InputKind::ObjCXX:
1666 // The PS4 uses C++11 as the default C++ standard.
1668 LangStd = LangStandard::lang_gnucxx11;
1670 LangStd = LangStandard::lang_gnucxx98;
1672 case InputKind::RenderScript:
1673 LangStd = LangStandard::lang_c99;
1678 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1679 Opts.LineComment = Std.hasLineComments();
1680 Opts.C99 = Std.isC99();
1681 Opts.C11 = Std.isC11();
1682 Opts.CPlusPlus = Std.isCPlusPlus();
1683 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1684 Opts.CPlusPlus14 = Std.isCPlusPlus14();
1685 Opts.CPlusPlus1z = Std.isCPlusPlus1z();
1686 Opts.Digraphs = Std.hasDigraphs();
1687 Opts.GNUMode = Std.isGNUMode();
1688 Opts.GNUInline = !Opts.C99 && !Opts.CPlusPlus;
1689 Opts.HexFloats = Std.hasHexFloats();
1690 Opts.ImplicitInt = Std.hasImplicitInt();
1692 // Set OpenCL Version.
1693 Opts.OpenCL = Std.isOpenCL();
1694 if (LangStd == LangStandard::lang_opencl10)
1695 Opts.OpenCLVersion = 100;
1696 else if (LangStd == LangStandard::lang_opencl11)
1697 Opts.OpenCLVersion = 110;
1698 else if (LangStd == LangStandard::lang_opencl12)
1699 Opts.OpenCLVersion = 120;
1700 else if (LangStd == LangStandard::lang_opencl20)
1701 Opts.OpenCLVersion = 200;
1703 // OpenCL has some additional defaults.
1707 Opts.LaxVectorConversions = 0;
1708 Opts.setDefaultFPContractMode(LangOptions::FPC_On);
1709 Opts.NativeHalfType = 1;
1710 Opts.NativeHalfArgsAndReturns = 1;
1711 // Include default header file for OpenCL.
1712 if (Opts.IncludeDefaultHeader) {
1713 PPOpts.Includes.push_back("opencl-c.h");
1717 Opts.CUDA = IK.getLanguage() == InputKind::CUDA;
1719 // Set default FP_CONTRACT to FAST.
1720 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast);
1722 Opts.RenderScript = IK.getLanguage() == InputKind::RenderScript;
1723 if (Opts.RenderScript) {
1724 Opts.NativeHalfType = 1;
1725 Opts.NativeHalfArgsAndReturns = 1;
1728 // OpenCL and C++ both have bool, true, false keywords.
1729 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1731 // OpenCL has half keyword
1732 Opts.Half = Opts.OpenCL;
1734 // C++ has wchar_t keyword.
1735 Opts.WChar = Opts.CPlusPlus;
1737 Opts.GNUKeywords = Opts.GNUMode;
1738 Opts.CXXOperatorNames = Opts.CPlusPlus;
1740 Opts.AlignedAllocation = Opts.CPlusPlus1z;
1742 Opts.DollarIdents = !Opts.AsmPreprocessor;
1745 /// Attempt to parse a visibility value out of the given argument.
1746 static Visibility parseVisibility(Arg *arg, ArgList &args,
1747 DiagnosticsEngine &diags) {
1748 StringRef value = arg->getValue();
1749 if (value == "default") {
1750 return DefaultVisibility;
1751 } else if (value == "hidden" || value == "internal") {
1752 return HiddenVisibility;
1753 } else if (value == "protected") {
1754 // FIXME: diagnose if target does not support protected visibility
1755 return ProtectedVisibility;
1758 diags.Report(diag::err_drv_invalid_value)
1759 << arg->getAsString(args) << value;
1760 return DefaultVisibility;
1763 /// Check if input file kind and language standard are compatible.
1764 static bool IsInputCompatibleWithStandard(InputKind IK,
1765 const LangStandard &S) {
1766 switch (IK.getLanguage()) {
1767 case InputKind::Unknown:
1768 case InputKind::LLVM_IR:
1769 llvm_unreachable("should not parse language flags for this input");
1772 case InputKind::ObjC:
1773 case InputKind::RenderScript:
1774 return S.getLanguage() == InputKind::C;
1776 case InputKind::OpenCL:
1777 return S.getLanguage() == InputKind::OpenCL;
1779 case InputKind::CXX:
1780 case InputKind::ObjCXX:
1781 return S.getLanguage() == InputKind::CXX;
1783 case InputKind::CUDA:
1784 // FIXME: What -std= values should be permitted for CUDA compilations?
1785 return S.getLanguage() == InputKind::CUDA ||
1786 S.getLanguage() == InputKind::CXX;
1788 case InputKind::Asm:
1789 // Accept (and ignore) all -std= values.
1790 // FIXME: The -std= value is not ignored; it affects the tokenization
1791 // and preprocessing rules if we're preprocessing this asm input.
1795 llvm_unreachable("unexpected input language");
1798 /// Get language name for given input kind.
1799 static const StringRef GetInputKindName(InputKind IK) {
1800 switch (IK.getLanguage()) {
1803 case InputKind::ObjC:
1804 return "Objective-C";
1805 case InputKind::CXX:
1807 case InputKind::ObjCXX:
1808 return "Objective-C++";
1809 case InputKind::OpenCL:
1811 case InputKind::CUDA:
1813 case InputKind::RenderScript:
1814 return "RenderScript";
1816 case InputKind::Asm:
1818 case InputKind::LLVM_IR:
1821 case InputKind::Unknown:
1824 llvm_unreachable("unknown input language");
1827 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1828 const TargetOptions &TargetOpts,
1829 PreprocessorOptions &PPOpts,
1830 DiagnosticsEngine &Diags) {
1831 // FIXME: Cleanup per-file based stuff.
1832 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1833 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1834 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1835 #define LANGSTANDARD(id, name, lang, desc, features) \
1836 .Case(name, LangStandard::lang_##id)
1837 #define LANGSTANDARD_ALIAS(id, alias) \
1838 .Case(alias, LangStandard::lang_##id)
1839 #include "clang/Frontend/LangStandards.def"
1840 .Default(LangStandard::lang_unspecified);
1841 if (LangStd == LangStandard::lang_unspecified) {
1842 Diags.Report(diag::err_drv_invalid_value)
1843 << A->getAsString(Args) << A->getValue();
1844 // Report supported standards with short description.
1845 for (unsigned KindValue = 0;
1846 KindValue != LangStandard::lang_unspecified;
1848 const LangStandard &Std = LangStandard::getLangStandardForKind(
1849 static_cast<LangStandard::Kind>(KindValue));
1850 if (IsInputCompatibleWithStandard(IK, Std)) {
1851 auto Diag = Diags.Report(diag::note_drv_use_standard);
1852 Diag << Std.getName() << Std.getDescription();
1853 unsigned NumAliases = 0;
1854 #define LANGSTANDARD(id, name, lang, desc, features)
1855 #define LANGSTANDARD_ALIAS(id, alias) \
1856 if (KindValue == LangStandard::lang_##id) ++NumAliases;
1857 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
1858 #include "clang/Frontend/LangStandards.def"
1860 #define LANGSTANDARD(id, name, lang, desc, features)
1861 #define LANGSTANDARD_ALIAS(id, alias) \
1862 if (KindValue == LangStandard::lang_##id) Diag << alias;
1863 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
1864 #include "clang/Frontend/LangStandards.def"
1868 // Valid standard, check to make sure language and standard are
1870 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1871 if (!IsInputCompatibleWithStandard(IK, Std)) {
1872 Diags.Report(diag::err_drv_argument_not_allowed_with)
1873 << A->getAsString(Args) << GetInputKindName(IK);
1878 // -cl-std only applies for OpenCL language standards.
1879 // Override the -std option in this case.
1880 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1881 LangStandard::Kind OpenCLLangStd
1882 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1883 .Cases("cl", "CL", LangStandard::lang_opencl10)
1884 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11)
1885 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12)
1886 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20)
1887 .Default(LangStandard::lang_unspecified);
1889 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1890 Diags.Report(diag::err_drv_invalid_value)
1891 << A->getAsString(Args) << A->getValue();
1894 LangStd = OpenCLLangStd;
1897 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header);
1899 llvm::Triple T(TargetOpts.Triple);
1900 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd);
1902 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0.
1903 // This option should be deprecated for CL > 1.0 because
1904 // this option was added for compatibility with OpenCL 1.0.
1905 if (Args.getLastArg(OPT_cl_strict_aliasing)
1906 && Opts.OpenCLVersion > 100) {
1907 std::string VerSpec = llvm::to_string(Opts.OpenCLVersion / 100) +
1909 llvm::to_string((Opts.OpenCLVersion % 100) / 10);
1910 Diags.Report(diag::warn_option_invalid_ocl_version)
1911 << VerSpec << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args);
1914 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1915 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1916 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1917 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1918 // name, as it doesn't seem a useful distinction.
1919 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1922 if (Args.hasArg(OPT_fno_operator_names))
1923 Opts.CXXOperatorNames = 0;
1925 if (Args.hasArg(OPT_fcuda_is_device))
1926 Opts.CUDAIsDevice = 1;
1928 if (Args.hasArg(OPT_fcuda_allow_variadic_functions))
1929 Opts.CUDAAllowVariadicFunctions = 1;
1931 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr))
1932 Opts.CUDAHostDeviceConstexpr = 0;
1934 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero))
1935 Opts.CUDADeviceFlushDenormalsToZero = 1;
1937 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals))
1938 Opts.CUDADeviceApproxTranscendentals = 1;
1941 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1942 StringRef value = arg->getValue();
1943 if (Opts.ObjCRuntime.tryParse(value))
1944 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1947 if (Args.hasArg(OPT_fobjc_gc_only))
1948 Opts.setGC(LangOptions::GCOnly);
1949 else if (Args.hasArg(OPT_fobjc_gc))
1950 Opts.setGC(LangOptions::HybridGC);
1951 else if (Args.hasArg(OPT_fobjc_arc)) {
1952 Opts.ObjCAutoRefCount = 1;
1953 if (!Opts.ObjCRuntime.allowsARC())
1954 Diags.Report(diag::err_arc_unsupported_on_runtime);
1957 // ObjCWeakRuntime tracks whether the runtime supports __weak, not
1958 // whether the feature is actually enabled. This is predominantly
1959 // determined by -fobjc-runtime, but we allow it to be overridden
1960 // from the command line for testing purposes.
1961 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1962 Opts.ObjCWeakRuntime = 1;
1964 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak();
1966 // ObjCWeak determines whether __weak is actually enabled.
1967 // Note that we allow -fno-objc-weak to disable this even in ARC mode.
1968 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) {
1969 if (!weakArg->getOption().matches(OPT_fobjc_weak)) {
1970 assert(!Opts.ObjCWeak);
1971 } else if (Opts.getGC() != LangOptions::NonGC) {
1972 Diags.Report(diag::err_objc_weak_with_gc);
1973 } else if (!Opts.ObjCWeakRuntime) {
1974 Diags.Report(diag::err_objc_weak_unsupported);
1978 } else if (Opts.ObjCAutoRefCount) {
1979 Opts.ObjCWeak = Opts.ObjCWeakRuntime;
1982 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1983 Opts.ObjCInferRelatedResultType = 0;
1985 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
1986 Opts.ObjCSubscriptingLegacyRuntime =
1987 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
1990 if (Args.hasArg(OPT_fgnu89_inline)) {
1992 Diags.Report(diag::err_drv_argument_not_allowed_with)
1993 << "-fgnu89-inline" << GetInputKindName(IK);
1998 if (Args.hasArg(OPT_fapple_kext)) {
1999 if (!Opts.CPlusPlus)
2000 Diags.Report(diag::warn_c_kext);
2005 if (Args.hasArg(OPT_print_ivar_layout))
2006 Opts.ObjCGCBitmapPrint = 1;
2007 if (Args.hasArg(OPT_fno_constant_cfstrings))
2008 Opts.NoConstantCFStrings = 1;
2010 if (Args.hasArg(OPT_fzvector))
2013 if (Args.hasArg(OPT_pthread))
2014 Opts.POSIXThreads = 1;
2016 // The value-visibility mode defaults to "default".
2017 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
2018 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
2020 Opts.setValueVisibilityMode(DefaultVisibility);
2023 // The type-visibility mode defaults to the value-visibility mode.
2024 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
2025 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
2027 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
2030 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
2031 Opts.InlineVisibilityHidden = 1;
2033 if (Args.hasArg(OPT_ftrapv)) {
2034 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
2035 // Set the handler, if one is specified.
2036 Opts.OverflowHandler =
2037 Args.getLastArgValue(OPT_ftrapv_handler);
2039 else if (Args.hasArg(OPT_fwrapv))
2040 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
2042 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
2043 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
2044 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
2045 Opts.MSCompatibilityVersion = 0;
2046 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) {
2048 if (VT.tryParse(A->getValue()))
2049 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
2051 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 +
2052 VT.getMinor().getValueOr(0) * 100000 +
2053 VT.getSubminor().getValueOr(0);
2056 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
2057 // is specified, or -std is set to a conforming mode.
2058 // Trigraphs are disabled by default in c++1z onwards.
2059 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z;
2061 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
2063 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
2064 OPT_fno_dollars_in_identifiers,
2066 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
2067 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
2068 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
2069 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
2070 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
2072 if (Args.hasArg(OPT_fno_lax_vector_conversions))
2073 Opts.LaxVectorConversions = 0;
2074 if (Args.hasArg(OPT_fno_threadsafe_statics))
2075 Opts.ThreadsafeStatics = 0;
2076 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
2077 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
2078 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
2079 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
2080 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind);
2081 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
2083 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti);
2084 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
2085 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL
2086 && Opts.OpenCLVersion >= 200);
2087 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
2088 Opts.CoroutinesTS = Args.hasArg(OPT_fcoroutines_ts);
2089 Opts.ModulesTS = Args.hasArg(OPT_fmodules_ts);
2090 Opts.Modules = Args.hasArg(OPT_fmodules) || Opts.ModulesTS;
2091 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
2092 Opts.ModulesDeclUse =
2093 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
2094 Opts.ModulesLocalVisibility =
2095 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS;
2096 Opts.ModulesCodegen = Args.hasArg(OPT_fmodules_codegen);
2097 Opts.ModulesDebugInfo = Args.hasArg(OPT_fmodules_debuginfo);
2098 Opts.ModulesSearchAll = Opts.Modules &&
2099 !Args.hasArg(OPT_fno_modules_search_all) &&
2100 Args.hasArg(OPT_fmodules_search_all);
2101 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
2102 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules);
2103 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
2104 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
2105 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
2106 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
2107 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
2108 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
2109 if (!Opts.NoBuiltin)
2110 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
2111 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
2112 Opts.RelaxedTemplateTemplateArgs =
2113 Args.hasArg(OPT_frelaxed_template_template_args);
2114 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation);
2115 Opts.AlignedAllocation =
2116 Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation,
2117 Opts.AlignedAllocation);
2118 Opts.AlignedAllocationUnavailable =
2119 Opts.AlignedAllocation && Args.hasArg(OPT_aligned_alloc_unavailable);
2120 Opts.NewAlignOverride =
2121 getLastArgIntValue(Args, OPT_fnew_alignment_EQ, 0, Diags);
2122 if (Opts.NewAlignOverride && !llvm::isPowerOf2_32(Opts.NewAlignOverride)) {
2123 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ);
2124 Diags.Report(diag::err_fe_invalid_alignment) << A->getAsString(Args)
2126 Opts.NewAlignOverride = 0;
2128 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts);
2129 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
2130 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
2131 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
2132 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
2133 Opts.InstantiationDepth =
2134 getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags);
2136 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
2137 Opts.ConstexprCallDepth =
2138 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
2139 Opts.ConstexprStepLimit =
2140 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
2141 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
2142 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
2143 Opts.NumLargeByValueCopy =
2144 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
2145 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
2146 Opts.ObjCConstantStringClass =
2147 Args.getLastArgValue(OPT_fconstant_string_class);
2148 Opts.ObjCDefaultSynthProperties =
2149 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
2150 Opts.EncodeExtendedBlockSig =
2151 Args.hasArg(OPT_fencode_extended_block_signature);
2152 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
2153 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
2154 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
2155 Opts.AlignDouble = Args.hasArg(OPT_malign_double);
2156 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2157 Opts.PIE = Args.hasArg(OPT_pic_is_pie);
2158 Opts.Static = Args.hasArg(OPT_static_define);
2159 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
2160 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
2161 || Args.hasArg(OPT_fdump_record_layouts);
2162 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
2163 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
2164 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
2165 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
2166 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
2167 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
2168 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
2169 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
2170 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
2171 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
2172 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
2173 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
2174 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name_EQ);
2175 Opts.AppExt = Args.hasArg(OPT_fapplication_extension);
2176 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature);
2177 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end());
2178 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type);
2179 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns);
2180 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns
2182 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns)
2183 | Opts.NativeHalfArgsAndReturns;
2184 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm);
2186 // __declspec is enabled by default for the PS4 by the driver, and also
2187 // enabled for Microsoft Extensions or Borland Extensions, here.
2189 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a
2190 // CUDA extension. However, it is required for supporting
2191 // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has
2192 // been rewritten in terms of something more generic, remove the Opts.CUDA
2194 Opts.DeclSpecKeyword =
2195 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec,
2196 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA));
2198 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
2199 switch (llvm::StringSwitch<unsigned>(A->getValue())
2200 .Case("target", LangOptions::ASMM_Target)
2201 .Case("no", LangOptions::ASMM_Off)
2202 .Case("yes", LangOptions::ASMM_On)
2205 Diags.Report(diag::err_drv_invalid_value)
2206 << "-faddress-space-map-mangling=" << A->getValue();
2208 case LangOptions::ASMM_Target:
2209 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
2211 case LangOptions::ASMM_On:
2212 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
2214 case LangOptions::ASMM_Off:
2215 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
2220 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
2221 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
2222 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
2225 LangOptions::PPTMK_FullGeneralitySingleInheritance)
2227 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
2229 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
2230 .Default(LangOptions::PPTMK_BestCase);
2231 if (InheritanceModel == LangOptions::PPTMK_BestCase)
2232 Diags.Report(diag::err_drv_invalid_value)
2233 << "-fms-memptr-rep=" << A->getValue();
2235 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
2238 // Check for MS default calling conventions being specified.
2239 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) {
2240 LangOptions::DefaultCallingConvention DefaultCC =
2241 llvm::StringSwitch<LangOptions::DefaultCallingConvention>(
2243 .Case("cdecl", LangOptions::DCC_CDecl)
2244 .Case("fastcall", LangOptions::DCC_FastCall)
2245 .Case("stdcall", LangOptions::DCC_StdCall)
2246 .Case("vectorcall", LangOptions::DCC_VectorCall)
2247 .Default(LangOptions::DCC_None);
2248 if (DefaultCC == LangOptions::DCC_None)
2249 Diags.Report(diag::err_drv_invalid_value)
2250 << "-fdefault-calling-conv=" << A->getValue();
2252 llvm::Triple T(TargetOpts.Triple);
2253 llvm::Triple::ArchType Arch = T.getArch();
2254 bool emitError = (DefaultCC == LangOptions::DCC_FastCall ||
2255 DefaultCC == LangOptions::DCC_StdCall) &&
2256 Arch != llvm::Triple::x86;
2257 emitError |= DefaultCC == LangOptions::DCC_VectorCall &&
2258 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64);
2260 Diags.Report(diag::err_drv_argument_not_allowed_with)
2261 << A->getSpelling() << T.getTriple();
2263 Opts.setDefaultCallingConv(DefaultCC);
2267 if (Arg *A = Args.getLastArg(OPT_mrtd)) {
2268 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None)
2269 Diags.Report(diag::err_drv_argument_not_allowed_with)
2270 << A->getSpelling() << "-fdefault-calling-conv";
2272 llvm::Triple T(TargetOpts.Triple);
2273 if (T.getArch() != llvm::Triple::x86)
2274 Diags.Report(diag::err_drv_argument_not_allowed_with)
2275 << A->getSpelling() << T.getTriple();
2277 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall);
2281 // Check if -fopenmp is specified.
2282 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0;
2284 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls);
2285 Opts.OpenMPIsDevice =
2286 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device);
2290 getLastArgIntValue(Args, OPT_fopenmp_version_EQ, Opts.OpenMP, Diags);
2292 Opts.OpenMP = Version;
2293 // Provide diagnostic when a given target is not expected to be an OpenMP
2295 if (!Opts.OpenMPIsDevice) {
2296 switch (T.getArch()) {
2299 // Add unsupported host targets here:
2300 case llvm::Triple::nvptx:
2301 case llvm::Triple::nvptx64:
2302 Diags.Report(clang::diag::err_drv_omp_host_target_not_supported)
2303 << TargetOpts.Triple;
2309 // Get the OpenMP target triples if any.
2310 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) {
2312 for (unsigned i = 0; i < A->getNumValues(); ++i) {
2313 llvm::Triple TT(A->getValue(i));
2315 if (TT.getArch() == llvm::Triple::UnknownArch)
2316 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i);
2318 Opts.OMPTargetTriples.push_back(TT);
2322 // Get OpenMP host file path if any and report if a non existent file is
2324 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) {
2325 Opts.OMPHostIRFile = A->getValue();
2326 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile))
2327 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found)
2328 << Opts.OMPHostIRFile;
2331 // Record whether the __DEPRECATED define was requested.
2332 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
2333 OPT_fno_deprecated_macro,
2336 // FIXME: Eliminate this dependency.
2337 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
2338 OptSize = getOptimizationLevelSize(Args);
2339 Opts.Optimize = Opt != 0;
2340 Opts.OptimizeSize = OptSize != 0;
2342 // This is the __NO_INLINE__ define, which just depends on things like the
2343 // optimization level and -fno-inline, not actually whether the backend has
2344 // inlining enabled.
2345 Opts.NoInlineDefine = !Opts.Optimize;
2346 if (Arg *InlineArg = Args.getLastArg(
2347 options::OPT_finline_functions, options::OPT_finline_hint_functions,
2348 options::OPT_fno_inline_functions, options::OPT_fno_inline))
2349 if (InlineArg->getOption().matches(options::OPT_fno_inline))
2350 Opts.NoInlineDefine = true;
2352 Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
2353 Args.hasArg(OPT_cl_fast_relaxed_math);
2354 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
2355 Args.hasArg(OPT_cl_finite_math_only) ||
2356 Args.hasArg(OPT_cl_fast_relaxed_math);
2357 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
2358 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
2359 Args.hasArg(OPT_cl_fast_relaxed_math);
2361 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
2362 StringRef Val = A->getValue();
2364 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast);
2365 else if (Val == "on")
2366 Opts.setDefaultFPContractMode(LangOptions::FPC_On);
2367 else if (Val == "off")
2368 Opts.setDefaultFPContractMode(LangOptions::FPC_Off);
2370 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
2373 Opts.RetainCommentsFromSystemHeaders =
2374 Args.hasArg(OPT_fretain_comments_from_system_headers);
2376 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
2379 Diags.Report(diag::err_drv_invalid_value)
2380 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
2382 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
2383 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
2384 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
2385 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
2388 // Parse -fsanitize= arguments.
2389 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2390 Diags, Opts.Sanitize);
2391 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
2392 Opts.SanitizeAddressFieldPadding =
2393 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
2394 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist);
2396 // -fxray-instrument
2397 Opts.XRayInstrument =
2398 Args.hasFlag(OPT_fxray_instrument, OPT_fnoxray_instrument, false);
2400 // -fxray-{always,never}-instrument= filenames.
2401 Opts.XRayAlwaysInstrumentFiles =
2402 Args.getAllArgValues(OPT_fxray_always_instrument);
2403 Opts.XRayNeverInstrumentFiles =
2404 Args.getAllArgValues(OPT_fxray_never_instrument);
2406 // -fallow-editor-placeholders
2407 Opts.AllowEditorPlaceholders = Args.hasArg(OPT_fallow_editor_placeholders);
2410 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) {
2412 case frontend::ASTDeclList:
2413 case frontend::ASTDump:
2414 case frontend::ASTPrint:
2415 case frontend::ASTView:
2416 case frontend::EmitAssembly:
2417 case frontend::EmitBC:
2418 case frontend::EmitHTML:
2419 case frontend::EmitLLVM:
2420 case frontend::EmitLLVMOnly:
2421 case frontend::EmitCodeGenOnly:
2422 case frontend::EmitObj:
2423 case frontend::FixIt:
2424 case frontend::GenerateModule:
2425 case frontend::GenerateModuleInterface:
2426 case frontend::GeneratePCH:
2427 case frontend::GeneratePTH:
2428 case frontend::ParseSyntaxOnly:
2429 case frontend::ModuleFileInfo:
2430 case frontend::VerifyPCH:
2431 case frontend::PluginAction:
2432 case frontend::PrintDeclContext:
2433 case frontend::RewriteObjC:
2434 case frontend::RewriteTest:
2435 case frontend::RunAnalysis:
2436 case frontend::MigrateSource:
2439 case frontend::DumpRawTokens:
2440 case frontend::DumpTokens:
2441 case frontend::InitOnly:
2442 case frontend::PrintPreamble:
2443 case frontend::PrintPreprocessedInput:
2444 case frontend::RewriteMacros:
2445 case frontend::RunPreprocessorOnly:
2448 llvm_unreachable("invalid frontend action");
2451 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
2452 FileManager &FileMgr,
2453 DiagnosticsEngine &Diags,
2454 frontend::ActionKind Action) {
2455 using namespace options;
2456 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
2457 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
2458 if (const Arg *A = Args.getLastArg(OPT_token_cache))
2459 Opts.TokenCache = A->getValue();
2461 Opts.TokenCache = Opts.ImplicitPTHInclude;
2462 Opts.UsePredefines = !Args.hasArg(OPT_undef);
2463 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
2464 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
2465 Opts.AllowPCHWithCompilerErrors = Args.hasArg(OPT_fallow_pch_with_errors);
2467 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
2468 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl))
2469 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
2471 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
2472 StringRef Value(A->getValue());
2473 size_t Comma = Value.find(',');
2475 unsigned EndOfLine = 0;
2477 if (Comma == StringRef::npos ||
2478 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
2479 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
2480 Diags.Report(diag::err_drv_preamble_format);
2482 Opts.PrecompiledPreambleBytes.first = Bytes;
2483 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
2487 // Add macros from the command line.
2488 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) {
2489 if (A->getOption().matches(OPT_D))
2490 Opts.addMacroDef(A->getValue());
2492 Opts.addMacroUndef(A->getValue());
2495 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
2497 // Add the ordered list of -includes.
2498 for (const Arg *A : Args.filtered(OPT_include))
2499 Opts.Includes.emplace_back(A->getValue());
2501 for (const Arg *A : Args.filtered(OPT_chain_include))
2502 Opts.ChainedIncludes.emplace_back(A->getValue());
2504 for (const Arg *A : Args.filtered(OPT_remap_file)) {
2505 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';');
2507 if (Split.second.empty()) {
2508 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
2512 Opts.addRemappedFile(Split.first, Split.second);
2515 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
2516 StringRef Name = A->getValue();
2517 unsigned Library = llvm::StringSwitch<unsigned>(Name)
2518 .Case("libc++", ARCXX_libcxx)
2519 .Case("libstdc++", ARCXX_libstdcxx)
2520 .Case("none", ARCXX_nolib)
2523 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
2525 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
2528 // Always avoid lexing editor placeholders when we're just running the
2529 // preprocessor as we never want to emit the
2530 // "editor placeholder in source file" error in PP only mode.
2531 if (isStrictlyPreprocessorAction(Action))
2532 Opts.LexEditorPlaceholders = false;
2535 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
2537 frontend::ActionKind Action) {
2538 using namespace options;
2540 if (isStrictlyPreprocessorAction(Action))
2541 Opts.ShowCPP = !Args.hasArg(OPT_dM);
2545 Opts.ShowComments = Args.hasArg(OPT_C);
2546 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
2547 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
2548 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
2549 Opts.ShowIncludeDirectives = Args.hasArg(OPT_dI);
2550 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
2551 Opts.RewriteImports = Args.hasArg(OPT_frewrite_imports);
2552 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives);
2555 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args,
2556 DiagnosticsEngine &Diags) {
2557 using namespace options;
2558 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
2559 if (Arg *A = Args.getLastArg(OPT_meabi)) {
2560 StringRef Value = A->getValue();
2561 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value)
2562 .Case("default", llvm::EABI::Default)
2563 .Case("4", llvm::EABI::EABI4)
2564 .Case("5", llvm::EABI::EABI5)
2565 .Case("gnu", llvm::EABI::GNU)
2566 .Default(llvm::EABI::Unknown);
2567 if (EABIVersion == llvm::EABI::Unknown)
2568 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
2571 Opts.EABIVersion = EABIVersion;
2573 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
2574 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
2575 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
2576 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
2577 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
2578 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ);
2579 // Use the default target triple if unspecified.
2580 if (Opts.Triple.empty())
2581 Opts.Triple = llvm::sys::getDefaultTargetTriple();
2582 Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ);
2585 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
2586 const char *const *ArgBegin,
2587 const char *const *ArgEnd,
2588 DiagnosticsEngine &Diags) {
2589 bool Success = true;
2591 // Parse the arguments.
2592 std::unique_ptr<OptTable> Opts = createDriverOptTable();
2593 const unsigned IncludedFlagsBitmask = options::CC1Option;
2594 unsigned MissingArgIndex, MissingArgCount;
2596 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex,
2597 MissingArgCount, IncludedFlagsBitmask);
2598 LangOptions &LangOpts = *Res.getLangOpts();
2600 // Check for missing argument error.
2601 if (MissingArgCount) {
2602 Diags.Report(diag::err_drv_missing_argument)
2603 << Args.getArgString(MissingArgIndex) << MissingArgCount;
2607 // Issue errors on unknown arguments.
2608 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) {
2609 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args);
2613 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags);
2614 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args);
2615 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args);
2617 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags,
2618 false /*DefaultDiagColor*/, false /*DefaultShowOpt*/);
2619 ParseCommentArgs(LangOpts.CommentOpts, Args);
2620 ParseFileSystemArgs(Res.getFileSystemOpts(), Args);
2621 // FIXME: We shouldn't have to pass the DashX option around here
2622 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags,
2623 LangOpts.IsHeaderFile);
2624 ParseTargetArgs(Res.getTargetOpts(), Args, Diags);
2625 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags,
2626 Res.getTargetOpts());
2627 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args,
2628 Res.getFileSystemOpts().WorkingDir);
2629 if (DashX.getFormat() == InputKind::Precompiled ||
2630 DashX.getLanguage() == InputKind::LLVM_IR) {
2631 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the
2632 // PassManager in BackendUtil.cpp. They need to be initializd no matter
2633 // what the input type is.
2634 if (Args.hasArg(OPT_fobjc_arc))
2635 LangOpts.ObjCAutoRefCount = 1;
2636 // PIClevel and PIELevel are needed during code generation and this should be
2637 // set regardless of the input type.
2638 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2639 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie);
2640 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2641 Diags, LangOpts.Sanitize);
2643 // Other LangOpts are only initialzed when the input is not AST or LLVM IR.
2644 // FIXME: Should we really be calling this for an InputKind::Asm input?
2645 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(),
2646 Res.getPreprocessorOpts(), Diags);
2647 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2648 LangOpts.ObjCExceptions = 1;
2651 if (LangOpts.CUDA) {
2652 // During CUDA device-side compilation, the aux triple is the
2653 // triple used for host compilation.
2654 if (LangOpts.CUDAIsDevice)
2655 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
2658 // Set the triple of the host for OpenMP device compile.
2659 if (LangOpts.OpenMPIsDevice)
2660 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
2662 // FIXME: Override value name discarding when asan or msan is used because the
2663 // backend passes depend on the name of the alloca in order to print out
2665 Res.getCodeGenOpts().DiscardValueNames &=
2666 !LangOpts.Sanitize.has(SanitizerKind::Address) &&
2667 !LangOpts.Sanitize.has(SanitizerKind::Memory);
2669 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
2670 // PCH file and find the original header name. Remove the need to do that in
2671 // ParsePreprocessorArgs and remove the FileManager
2672 // parameters from the function and the "FileManager.h" #include.
2673 FileManager FileMgr(Res.getFileSystemOpts());
2674 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags,
2675 Res.getFrontendOpts().ProgramAction);
2676 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args,
2677 Res.getFrontendOpts().ProgramAction);
2679 // Turn on -Wspir-compat for SPIR target.
2680 llvm::Triple T(Res.getTargetOpts().Triple);
2681 auto Arch = T.getArch();
2682 if (Arch == llvm::Triple::spir || Arch == llvm::Triple::spir64) {
2683 Res.getDiagnosticOpts().Warnings.push_back("spir-compat");
2688 std::string CompilerInvocation::getModuleHash() const {
2689 // Note: For QoI reasons, the things we use as a hash here should all be
2690 // dumped via the -module-info flag.
2691 using llvm::hash_code;
2692 using llvm::hash_value;
2693 using llvm::hash_combine;
2695 // Start the signature with the compiler version.
2696 // FIXME: We'd rather use something more cryptographically sound than
2697 // CityHash, but this will do for now.
2698 hash_code code = hash_value(getClangFullRepositoryVersion());
2700 // Extend the signature with the language options
2701 #define LANGOPT(Name, Bits, Default, Description) \
2702 code = hash_combine(code, LangOpts->Name);
2703 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2704 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
2705 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
2706 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
2707 #include "clang/Basic/LangOptions.def"
2709 for (StringRef Feature : LangOpts->ModuleFeatures)
2710 code = hash_combine(code, Feature);
2712 // Extend the signature with the target options.
2713 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
2715 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
2716 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
2718 // Extend the signature with preprocessor options.
2719 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
2720 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
2721 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
2723 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator
2724 I = getPreprocessorOpts().Macros.begin(),
2725 IEnd = getPreprocessorOpts().Macros.end();
2727 // If we're supposed to ignore this macro for the purposes of modules,
2728 // don't put it into the hash.
2729 if (!hsOpts.ModulesIgnoreMacros.empty()) {
2730 // Check whether we're ignoring this macro.
2731 StringRef MacroDef = I->first;
2732 if (hsOpts.ModulesIgnoreMacros.count(
2733 llvm::CachedHashString(MacroDef.split('=').first)))
2737 code = hash_combine(code, I->first, I->second);
2740 // Extend the signature with the sysroot and other header search options.
2741 code = hash_combine(code, hsOpts.Sysroot,
2742 hsOpts.ModuleFormat,
2743 hsOpts.UseDebugInfo,
2744 hsOpts.UseBuiltinIncludes,
2745 hsOpts.UseStandardSystemIncludes,
2746 hsOpts.UseStandardCXXIncludes,
2748 hsOpts.ModulesValidateDiagnosticOptions);
2749 code = hash_combine(code, hsOpts.ResourceDir);
2751 // Extend the signature with the user build path.
2752 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
2754 // Extend the signature with the module file extensions.
2755 const FrontendOptions &frontendOpts = getFrontendOpts();
2756 for (const auto &ext : frontendOpts.ModuleFileExtensions) {
2757 code = ext->hashExtension(code);
2760 // Extend the signature with the enabled sanitizers, if at least one is
2761 // enabled. Sanitizers which cannot affect AST generation aren't hashed.
2762 SanitizerSet SanHash = LangOpts->Sanitize;
2763 SanHash.clear(getPPTransparentSanitizers());
2764 if (!SanHash.empty())
2765 code = hash_combine(code, SanHash.Mask);
2767 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
2772 template<typename IntTy>
2773 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
2775 DiagnosticsEngine *Diags) {
2776 IntTy Res = Default;
2777 if (Arg *A = Args.getLastArg(Id)) {
2778 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
2780 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
2788 // Declared in clang/Frontend/Utils.h.
2789 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
2790 DiagnosticsEngine *Diags) {
2791 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
2794 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
2796 DiagnosticsEngine *Diags) {
2797 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
2800 void BuryPointer(const void *Ptr) {
2801 // This function may be called only a small fixed amount of times per each
2802 // invocation, otherwise we do actually have a leak which we want to report.
2803 // If this function is called more than kGraveYardMaxSize times, the pointers
2804 // will not be properly buried and a leak detector will report a leak, which
2805 // is what we want in such case.
2806 static const size_t kGraveYardMaxSize = 16;
2807 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2808 static std::atomic<unsigned> GraveYardSize;
2809 unsigned Idx = GraveYardSize++;
2810 if (Idx >= kGraveYardMaxSize)
2812 GraveYard[Idx] = Ptr;
2815 IntrusiveRefCntPtr<vfs::FileSystem>
2816 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2817 DiagnosticsEngine &Diags) {
2818 return createVFSFromCompilerInvocation(CI, Diags, vfs::getRealFileSystem());
2821 IntrusiveRefCntPtr<vfs::FileSystem>
2822 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2823 DiagnosticsEngine &Diags,
2824 IntrusiveRefCntPtr<vfs::FileSystem> BaseFS) {
2825 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2828 IntrusiveRefCntPtr<vfs::OverlayFileSystem> Overlay(
2829 new vfs::OverlayFileSystem(BaseFS));
2830 // earlier vfs files are on the bottom
2831 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2832 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2833 BaseFS->getBufferForFile(File);
2835 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2836 return IntrusiveRefCntPtr<vfs::FileSystem>();
2839 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML(
2840 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File);
2842 Diags.Report(diag::err_invalid_vfs_overlay) << File;
2843 return IntrusiveRefCntPtr<vfs::FileSystem>();
2845 Overlay->pushOverlay(FS);
2849 } // end namespace clang