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 = Args.hasArg(OPT_dwarf_explicit_import);
531 Opts.DebugFwdTemplateParams = Args.hasArg(OPT_debug_forward_template_params);
533 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ))
534 Opts.DebugPrefixMap.insert(StringRef(Arg).split('='));
537 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists))
538 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists;
540 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes);
541 Opts.DisableLifetimeMarkers = Args.hasArg(OPT_disable_lifetimemarkers);
542 Opts.DisableO0ImplyOptNone = Args.hasArg(OPT_disable_O0_optnone);
543 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
544 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
545 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
546 OPT_fuse_register_sized_bitfield_access);
547 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
548 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
549 Opts.NewStructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa) &&
550 Args.hasArg(OPT_new_struct_path_tbaa);
551 Opts.FineGrainedBitfieldAccesses =
552 Args.hasFlag(OPT_ffine_grained_bitfield_accesses,
553 OPT_fno_fine_grained_bitfield_accesses, false);
554 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
555 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
556 Opts.NoCommon = Args.hasArg(OPT_fno_common);
557 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
558 Opts.OptimizeSize = getOptimizationLevelSize(Args);
559 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
560 Args.hasArg(OPT_ffreestanding));
561 if (Opts.SimplifyLibCalls)
562 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
564 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
565 (Opts.OptimizationLevel > 1));
566 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
568 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
569 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
570 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
571 Opts.DebugInfoForProfiling = Args.hasFlag(
572 OPT_fdebug_info_for_profiling, OPT_fno_debug_info_for_profiling, false);
573 Opts.GnuPubnames = Args.hasArg(OPT_ggnu_pubnames);
575 setPGOInstrumentor(Opts, Args, Diags);
576 Opts.InstrProfileOutput =
577 Args.getLastArgValue(OPT_fprofile_instrument_path_EQ);
578 Opts.ProfileInstrumentUsePath =
579 Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ);
580 if (!Opts.ProfileInstrumentUsePath.empty())
581 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath);
583 if (Arg *A = Args.getLastArg(OPT_fclang_abi_compat_EQ)) {
584 Opts.setClangABICompat(CodeGenOptions::ClangABI::Latest);
586 StringRef Ver = A->getValue();
587 std::pair<StringRef, StringRef> VerParts = Ver.split('.');
588 unsigned Major, Minor = 0;
590 // Check the version number is valid: either 3.x (0 <= x <= 9) or
591 // y or y.0 (4 <= y <= current version).
592 if (!VerParts.first.startswith("0") &&
593 !VerParts.first.getAsInteger(10, Major) &&
594 3 <= Major && Major <= CLANG_VERSION_MAJOR &&
595 (Major == 3 ? VerParts.second.size() == 1 &&
596 !VerParts.second.getAsInteger(10, Minor)
597 : VerParts.first.size() == Ver.size() ||
598 VerParts.second == "0")) {
599 // Got a valid version number.
600 if (Major == 3 && Minor <= 8)
601 Opts.setClangABICompat(CodeGenOptions::ClangABI::Ver3_8);
603 Opts.setClangABICompat(CodeGenOptions::ClangABI::Ver4);
604 } else if (Ver != "latest") {
605 Diags.Report(diag::err_drv_invalid_value)
606 << A->getAsString(Args) << A->getValue();
610 Opts.CoverageMapping =
611 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false);
612 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
613 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
614 Opts.PreserveAsmComments = !Args.hasArg(OPT_fno_preserve_as_comments);
615 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
616 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
617 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
618 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
619 Opts.CodeModel = getCodeModel(Args, Diags);
620 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
622 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg));
623 Opts.DisableFree = Args.hasArg(OPT_disable_free);
624 Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names);
625 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
626 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
627 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable) ||
628 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
629 Args.hasArg(OPT_cl_fast_relaxed_math);
630 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
631 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
632 Args.hasArg(OPT_cl_finite_math_only) ||
633 Args.hasArg(OPT_cl_fast_relaxed_math));
634 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
635 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
636 Args.hasArg(OPT_cl_finite_math_only) ||
637 Args.hasArg(OPT_cl_fast_relaxed_math));
638 Opts.NoSignedZeros = (Args.hasArg(OPT_fno_signed_zeros) ||
639 Args.hasArg(OPT_cl_no_signed_zeros) ||
640 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
641 Args.hasArg(OPT_cl_fast_relaxed_math));
642 Opts.Reassociate = Args.hasArg(OPT_mreassociate);
643 Opts.FlushDenorm = Args.hasArg(OPT_cl_denorms_are_zero);
644 Opts.CorrectlyRoundedDivSqrt =
645 Args.hasArg(OPT_cl_fp32_correctly_rounded_divide_sqrt);
646 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ);
647 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math);
648 Opts.NoTrappingMath = Args.hasArg(OPT_fno_trapping_math);
649 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
650 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
651 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
652 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
653 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
654 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
655 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
656 Opts.IncrementalLinkerCompatible =
657 Args.hasArg(OPT_mincremental_linker_compatible);
658 Opts.PIECopyRelocations =
659 Args.hasArg(OPT_mpie_copy_relocations);
660 Opts.NoPLT = Args.hasArg(OPT_fno_plt);
661 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
662 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
663 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
664 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
665 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
666 Opts.StrictReturn = !Args.hasArg(OPT_fno_strict_return);
667 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers);
668 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
669 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
670 Args.hasArg(OPT_cl_fast_relaxed_math);
671 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
672 Opts.RelocationModel = getRelocModel(Args, Diags);
673 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
674 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
675 Diags.Report(diag::err_drv_invalid_value)
676 << Args.getLastArg(OPT_mthread_model)->getAsString(Args)
678 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
679 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
681 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
682 OPT_fno_function_sections, false);
683 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
684 OPT_fno_data_sections, false);
685 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names,
686 OPT_fno_unique_section_names, true);
688 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
690 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables);
692 Opts.ProfileSampleAccurate = Args.hasArg(OPT_fprofile_sample_accurate);
694 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ);
695 Opts.EmitSummaryIndex = false;
696 if (Arg *A = Args.getLastArg(OPT_flto_EQ)) {
697 StringRef S = A->getValue();
699 Opts.EmitSummaryIndex = true;
700 else if (S != "full")
701 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S;
703 Opts.LTOUnit = Args.hasFlag(OPT_flto_unit, OPT_fno_lto_unit, false);
704 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) {
705 if (IK.getLanguage() != InputKind::LLVM_IR)
706 Diags.Report(diag::err_drv_argument_only_allowed_with)
707 << A->getAsString(Args) << "-x ir";
708 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ);
710 Opts.ThinLinkBitcodeFile = Args.getLastArgValue(OPT_fthin_link_bitcode_EQ);
712 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile);
714 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
715 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
717 Opts.PreferVectorWidth = Args.getLastArgValue(OPT_mprefer_vector_width_EQ);
719 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
720 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
722 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
723 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
724 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
725 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
726 Opts.CoverageDataFile = Args.getLastArgValue(OPT_coverage_data_file);
727 Opts.CoverageNotesFile = Args.getLastArgValue(OPT_coverage_notes_file);
728 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
729 Opts.CoverageNoFunctionNamesInData =
730 Args.hasArg(OPT_coverage_no_function_names_in_data);
731 Opts.CoverageExitBlockBeforeBody =
732 Args.hasArg(OPT_coverage_exit_block_before_body);
733 if (Args.hasArg(OPT_coverage_version_EQ)) {
734 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
735 if (CoverageVersion.size() != 4) {
736 Diags.Report(diag::err_drv_invalid_value)
737 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
740 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
744 // Handle -fembed-bitcode option.
745 if (Arg *A = Args.getLastArg(OPT_fembed_bitcode_EQ)) {
746 StringRef Name = A->getValue();
747 unsigned Model = llvm::StringSwitch<unsigned>(Name)
748 .Case("off", CodeGenOptions::Embed_Off)
749 .Case("all", CodeGenOptions::Embed_All)
750 .Case("bitcode", CodeGenOptions::Embed_Bitcode)
751 .Case("marker", CodeGenOptions::Embed_Marker)
754 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
757 Opts.setEmbedBitcode(
758 static_cast<CodeGenOptions::EmbedBitcodeKind>(Model));
760 // FIXME: For backend options that are not yet recorded as function
761 // attributes in the IR, keep track of them so we can embed them in a
762 // separate data section and use them when building the bitcode.
763 if (Opts.getEmbedBitcode() == CodeGenOptions::Embed_All) {
764 for (const auto &A : Args) {
765 // Do not encode output and input.
766 if (A->getOption().getID() == options::OPT_o ||
767 A->getOption().getID() == options::OPT_INPUT ||
768 A->getOption().getID() == options::OPT_x ||
769 A->getOption().getID() == options::OPT_fembed_bitcode ||
770 (A->getOption().getGroup().isValid() &&
771 A->getOption().getGroup().getID() == options::OPT_W_Group))
774 A->render(Args, ASL);
775 for (const auto &arg : ASL) {
776 StringRef ArgStr(arg);
777 Opts.CmdArgs.insert(Opts.CmdArgs.end(), ArgStr.begin(), ArgStr.end());
778 // using \00 to seperate each commandline options.
779 Opts.CmdArgs.push_back('\0');
784 Opts.PreserveVec3Type = Args.hasArg(OPT_fpreserve_vec3_type);
785 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
786 Opts.InstrumentFunctionsAfterInlining =
787 Args.hasArg(OPT_finstrument_functions_after_inlining);
788 Opts.InstrumentFunctionEntryBare =
789 Args.hasArg(OPT_finstrument_function_entry_bare);
790 Opts.XRayInstrumentFunctions = Args.hasArg(OPT_fxray_instrument);
791 Opts.XRayAlwaysEmitCustomEvents =
792 Args.hasArg(OPT_fxray_always_emit_customevents);
793 Opts.XRayInstructionThreshold =
794 getLastArgIntValue(Args, OPT_fxray_instruction_threshold_EQ, 200, Diags);
795 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
796 Opts.CallFEntry = Args.hasArg(OPT_mfentry);
797 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
799 if (const Arg *A = Args.getLastArg(OPT_compress_debug_sections,
800 OPT_compress_debug_sections_EQ)) {
801 if (A->getOption().getID() == OPT_compress_debug_sections) {
802 // TODO: be more clever about the compression type auto-detection
803 Opts.setCompressDebugSections(llvm::DebugCompressionType::GNU);
805 auto DCT = llvm::StringSwitch<llvm::DebugCompressionType>(A->getValue())
806 .Case("none", llvm::DebugCompressionType::None)
807 .Case("zlib", llvm::DebugCompressionType::Z)
808 .Case("zlib-gnu", llvm::DebugCompressionType::GNU)
809 .Default(llvm::DebugCompressionType::None);
810 Opts.setCompressDebugSections(DCT);
814 Opts.RelaxELFRelocations = Args.hasArg(OPT_mrelax_relocations);
815 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
816 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) {
817 CodeGenOptions::BitcodeFileToLink F;
818 F.Filename = A->getValue();
819 if (A->getOption().matches(OPT_mlink_cuda_bitcode)) {
820 F.LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded;
821 // When linking CUDA bitcode, propagate function attributes so that
822 // e.g. libdevice gets fast-math attrs if we're building with fast-math.
823 F.PropagateAttrs = true;
824 F.Internalize = true;
826 Opts.LinkBitcodeFiles.push_back(F);
828 Opts.SanitizeCoverageType =
829 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags);
830 Opts.SanitizeCoverageIndirectCalls =
831 Args.hasArg(OPT_fsanitize_coverage_indirect_calls);
832 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb);
833 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp);
834 Opts.SanitizeCoverageTraceDiv = Args.hasArg(OPT_fsanitize_coverage_trace_div);
835 Opts.SanitizeCoverageTraceGep = Args.hasArg(OPT_fsanitize_coverage_trace_gep);
836 Opts.SanitizeCoverage8bitCounters =
837 Args.hasArg(OPT_fsanitize_coverage_8bit_counters);
838 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc);
839 Opts.SanitizeCoverageTracePCGuard =
840 Args.hasArg(OPT_fsanitize_coverage_trace_pc_guard);
841 Opts.SanitizeCoverageNoPrune = Args.hasArg(OPT_fsanitize_coverage_no_prune);
842 Opts.SanitizeCoverageInline8bitCounters =
843 Args.hasArg(OPT_fsanitize_coverage_inline_8bit_counters);
844 Opts.SanitizeCoveragePCTable = Args.hasArg(OPT_fsanitize_coverage_pc_table);
845 Opts.SanitizeCoverageStackDepth =
846 Args.hasArg(OPT_fsanitize_coverage_stack_depth);
847 Opts.SanitizeMemoryTrackOrigins =
848 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
849 Opts.SanitizeMemoryUseAfterDtor =
850 Args.hasFlag(OPT_fsanitize_memory_use_after_dtor,
851 OPT_fno_sanitize_memory_use_after_dtor,
853 Opts.SanitizeMinimalRuntime = Args.hasArg(OPT_fsanitize_minimal_runtime);
854 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso);
855 Opts.SanitizeCfiICallGeneralizePointers =
856 Args.hasArg(OPT_fsanitize_cfi_icall_generalize_pointers);
857 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats);
858 if (Arg *A = Args.getLastArg(OPT_fsanitize_address_use_after_scope,
859 OPT_fno_sanitize_address_use_after_scope)) {
860 Opts.SanitizeAddressUseAfterScope =
861 A->getOption().getID() == OPT_fsanitize_address_use_after_scope;
863 Opts.SanitizeAddressGlobalsDeadStripping =
864 Args.hasArg(OPT_fsanitize_address_globals_dead_stripping);
866 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
867 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
868 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
869 StringRef Val = A->getValue();
870 unsigned StackAlignment = Opts.StackAlignment;
871 Val.getAsInteger(10, StackAlignment);
872 Opts.StackAlignment = StackAlignment;
875 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) {
876 StringRef Val = A->getValue();
877 unsigned StackProbeSize = Opts.StackProbeSize;
878 Val.getAsInteger(0, StackProbeSize);
879 Opts.StackProbeSize = StackProbeSize;
882 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
883 StringRef Name = A->getValue();
884 unsigned Method = llvm::StringSwitch<unsigned>(Name)
885 .Case("legacy", CodeGenOptions::Legacy)
886 .Case("non-legacy", CodeGenOptions::NonLegacy)
887 .Case("mixed", CodeGenOptions::Mixed)
890 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
893 Opts.setObjCDispatchMethod(
894 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
899 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false);
901 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
902 StringRef Name = A->getValue();
903 unsigned Model = llvm::StringSwitch<unsigned>(Name)
904 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
905 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
906 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
907 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
910 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
913 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
917 if (Arg *A = Args.getLastArg(OPT_fdenormal_fp_math_EQ)) {
918 StringRef Val = A->getValue();
920 Opts.FPDenormalMode = "ieee";
921 else if (Val == "preserve-sign")
922 Opts.FPDenormalMode = "preserve-sign";
923 else if (Val == "positive-zero")
924 Opts.FPDenormalMode = "positive-zero";
926 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
929 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
930 if (A->getOption().matches(OPT_fpcc_struct_return)) {
931 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
933 assert(A->getOption().matches(OPT_freg_struct_return));
934 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
938 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
939 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option);
940 bool NeedLocTracking = false;
942 Opts.OptRecordFile = Args.getLastArgValue(OPT_opt_record_file);
943 if (!Opts.OptRecordFile.empty())
944 NeedLocTracking = true;
946 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
947 Opts.OptimizationRemarkPattern =
948 GenerateOptimizationRemarkRegex(Diags, Args, A);
949 NeedLocTracking = true;
952 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
953 Opts.OptimizationRemarkMissedPattern =
954 GenerateOptimizationRemarkRegex(Diags, Args, A);
955 NeedLocTracking = true;
958 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
959 Opts.OptimizationRemarkAnalysisPattern =
960 GenerateOptimizationRemarkRegex(Diags, Args, A);
961 NeedLocTracking = true;
964 Opts.DiagnosticsWithHotness =
965 Args.hasArg(options::OPT_fdiagnostics_show_hotness);
966 bool UsingSampleProfile = !Opts.SampleProfileFile.empty();
967 bool UsingProfile = UsingSampleProfile ||
968 (Opts.getProfileUse() != CodeGenOptions::ProfileNone);
970 if (Opts.DiagnosticsWithHotness && !UsingProfile)
971 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
972 << "-fdiagnostics-show-hotness";
974 Opts.DiagnosticsHotnessThreshold = getLastArgUInt64Value(
975 Args, options::OPT_fdiagnostics_hotness_threshold_EQ, 0);
976 if (Opts.DiagnosticsHotnessThreshold > 0 && !UsingProfile)
977 Diags.Report(diag::warn_drv_diagnostics_hotness_requires_pgo)
978 << "-fdiagnostics-hotness-threshold=";
980 // If the user requested to use a sample profile for PGO, then the
981 // backend will need to track source location information so the profile
982 // can be incorporated into the IR.
983 if (UsingSampleProfile)
984 NeedLocTracking = true;
986 // If the user requested a flag that requires source locations available in
987 // the backend, make sure that the backend tracks source location information.
988 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo)
989 Opts.setDebugInfo(codegenoptions::LocTrackingOnly);
991 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
993 // Parse -fsanitize-recover= arguments.
994 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
995 parseSanitizerKinds("-fsanitize-recover=",
996 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
997 Opts.SanitizeRecover);
998 parseSanitizerKinds("-fsanitize-trap=",
999 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags,
1002 Opts.CudaGpuBinaryFileNames =
1003 Args.getAllArgValues(OPT_fcuda_include_gpubinary);
1005 Opts.Backchain = Args.hasArg(OPT_mbackchain);
1007 Opts.EmitCheckPathComponentsToStrip = getLastArgIntValue(
1008 Args, OPT_fsanitize_undefined_strip_path_components_EQ, 0, Diags);
1013 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
1015 using namespace options;
1016 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
1017 Opts.Targets = Args.getAllArgValues(OPT_MT);
1018 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
1019 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
1020 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
1021 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1022 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
1023 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
1024 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
1025 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
1026 Opts.ModuleDependencyOutputDir =
1027 Args.getLastArgValue(OPT_module_dependency_dir);
1028 if (Args.hasArg(OPT_MV))
1029 Opts.OutputFormat = DependencyOutputFormat::NMake;
1030 // Add sanitizer blacklists as extra dependencies.
1031 // They won't be discovered by the regular preprocessor, so
1032 // we let make / ninja to know about this implicit dependency.
1033 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry);
1034 // Only the -fmodule-file=<file> form.
1035 for (const Arg *A : Args.filtered(OPT_fmodule_file)) {
1036 StringRef Val = A->getValue();
1037 if (Val.find('=') == StringRef::npos)
1038 Opts.ExtraDeps.push_back(Val);
1042 static bool parseShowColorsArgs(const ArgList &Args, bool DefaultColor) {
1043 // Color diagnostics default to auto ("on" if terminal supports) in the driver
1044 // but default to off in cc1, needing an explicit OPT_fdiagnostics_color.
1045 // Support both clang's -f[no-]color-diagnostics and gcc's
1046 // -f[no-]diagnostics-colors[=never|always|auto].
1051 } ShowColors = DefaultColor ? Colors_Auto : Colors_Off;
1052 for (Arg *A : Args) {
1053 const Option &O = A->getOption();
1054 if (O.matches(options::OPT_fcolor_diagnostics) ||
1055 O.matches(options::OPT_fdiagnostics_color)) {
1056 ShowColors = Colors_On;
1057 } else if (O.matches(options::OPT_fno_color_diagnostics) ||
1058 O.matches(options::OPT_fno_diagnostics_color)) {
1059 ShowColors = Colors_Off;
1060 } else if (O.matches(options::OPT_fdiagnostics_color_EQ)) {
1061 StringRef Value(A->getValue());
1062 if (Value == "always")
1063 ShowColors = Colors_On;
1064 else if (Value == "never")
1065 ShowColors = Colors_Off;
1066 else if (Value == "auto")
1067 ShowColors = Colors_Auto;
1070 return ShowColors == Colors_On ||
1071 (ShowColors == Colors_Auto &&
1072 llvm::sys::Process::StandardErrHasColors());
1075 static bool checkVerifyPrefixes(const std::vector<std::string> &VerifyPrefixes,
1076 DiagnosticsEngine *Diags) {
1077 bool Success = true;
1078 for (const auto &Prefix : VerifyPrefixes) {
1079 // Every prefix must start with a letter and contain only alphanumeric
1080 // characters, hyphens, and underscores.
1081 auto BadChar = std::find_if(Prefix.begin(), Prefix.end(),
1082 [](char C){return !isAlphanumeric(C)
1083 && C != '-' && C != '_';});
1084 if (BadChar != Prefix.end() || !isLetter(Prefix[0])) {
1087 Diags->Report(diag::err_drv_invalid_value) << "-verify=" << Prefix;
1088 Diags->Report(diag::note_drv_verify_prefix_spelling);
1095 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1096 DiagnosticsEngine *Diags,
1097 bool DefaultDiagColor, bool DefaultShowOpt) {
1098 using namespace options;
1099 bool Success = true;
1101 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
1103 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
1104 Opts.DiagnosticSerializationFile = A->getValue();
1105 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
1106 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
1107 Opts.Pedantic = Args.hasArg(OPT_pedantic);
1108 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
1109 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
1110 Opts.ShowColors = parseShowColorsArgs(Args, DefaultDiagColor);
1111 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1112 OPT_fno_show_column,
1114 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1115 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1116 Opts.AbsolutePath = Args.hasArg(OPT_fdiagnostics_absolute_paths);
1117 Opts.ShowOptionNames =
1118 Args.hasFlag(OPT_fdiagnostics_show_option,
1119 OPT_fno_diagnostics_show_option, DefaultShowOpt);
1121 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
1123 // Default behavior is to not to show note include stacks.
1124 Opts.ShowNoteIncludeStack = false;
1125 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1126 OPT_fno_diagnostics_show_note_include_stack))
1127 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1128 Opts.ShowNoteIncludeStack = true;
1130 StringRef ShowOverloads =
1131 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1132 if (ShowOverloads == "best")
1133 Opts.setShowOverloads(Ovl_Best);
1134 else if (ShowOverloads == "all")
1135 Opts.setShowOverloads(Ovl_All);
1139 Diags->Report(diag::err_drv_invalid_value)
1140 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1144 StringRef ShowCategory =
1145 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1146 if (ShowCategory == "none")
1147 Opts.ShowCategories = 0;
1148 else if (ShowCategory == "id")
1149 Opts.ShowCategories = 1;
1150 else if (ShowCategory == "name")
1151 Opts.ShowCategories = 2;
1155 Diags->Report(diag::err_drv_invalid_value)
1156 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1161 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1162 if (Format == "clang")
1163 Opts.setFormat(DiagnosticOptions::Clang);
1164 else if (Format == "msvc")
1165 Opts.setFormat(DiagnosticOptions::MSVC);
1166 else if (Format == "msvc-fallback") {
1167 Opts.setFormat(DiagnosticOptions::MSVC);
1168 Opts.CLFallbackMode = true;
1169 } else if (Format == "vi")
1170 Opts.setFormat(DiagnosticOptions::Vi);
1174 Diags->Report(diag::err_drv_invalid_value)
1175 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1179 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1180 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1181 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
1182 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify) || Args.hasArg(OPT_verify_EQ);
1183 Opts.VerifyPrefixes = Args.getAllArgValues(OPT_verify_EQ);
1184 if (Args.hasArg(OPT_verify))
1185 Opts.VerifyPrefixes.push_back("expected");
1186 // Keep VerifyPrefixes in its original order for the sake of diagnostics, and
1187 // then sort it to prepare for fast lookup using std::binary_search.
1188 if (!checkVerifyPrefixes(Opts.VerifyPrefixes, Diags)) {
1189 Opts.VerifyDiagnostics = false;
1193 std::sort(Opts.VerifyPrefixes.begin(), Opts.VerifyPrefixes.end());
1194 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None;
1195 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=",
1196 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ),
1198 if (Args.hasArg(OPT_verify_ignore_unexpected))
1199 DiagMask = DiagnosticLevelMask::All;
1200 Opts.setVerifyIgnoreUnexpected(DiagMask);
1201 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
1202 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
1203 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
1204 Opts.MacroBacktraceLimit =
1205 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
1206 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1207 Opts.TemplateBacktraceLimit = getLastArgIntValue(
1208 Args, OPT_ftemplate_backtrace_limit,
1209 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
1210 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
1211 Args, OPT_fconstexpr_backtrace_limit,
1212 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
1213 Opts.SpellCheckingLimit = getLastArgIntValue(
1214 Args, OPT_fspell_checking_limit,
1215 DiagnosticOptions::DefaultSpellCheckingLimit, Diags);
1216 Opts.SnippetLineLimit = getLastArgIntValue(
1217 Args, OPT_fcaret_diagnostics_max_lines,
1218 DiagnosticOptions::DefaultSnippetLineLimit, Diags);
1219 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
1220 DiagnosticOptions::DefaultTabStop, Diags);
1221 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1222 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1224 Diags->Report(diag::warn_ignoring_ftabstop_value)
1225 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1227 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
1228 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
1229 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
1234 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1235 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1238 /// Parse the argument to the -ftest-module-file-extension
1239 /// command-line argument.
1241 /// \returns true on error, false on success.
1242 static bool parseTestModuleFileExtensionArg(StringRef Arg,
1243 std::string &BlockName,
1244 unsigned &MajorVersion,
1245 unsigned &MinorVersion,
1247 std::string &UserInfo) {
1248 SmallVector<StringRef, 5> Args;
1249 Arg.split(Args, ':', 5);
1250 if (Args.size() < 5)
1253 BlockName = Args[0];
1254 if (Args[1].getAsInteger(10, MajorVersion)) return true;
1255 if (Args[2].getAsInteger(10, MinorVersion)) return true;
1256 if (Args[3].getAsInteger(2, Hashed)) return true;
1257 if (Args.size() > 4)
1262 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1263 DiagnosticsEngine &Diags,
1264 bool &IsHeaderFile) {
1265 using namespace options;
1266 Opts.ProgramAction = frontend::ParseSyntaxOnly;
1267 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1268 switch (A->getOption().getID()) {
1270 llvm_unreachable("Invalid option in group!");
1272 Opts.ProgramAction = frontend::ASTDeclList; break;
1274 case OPT_ast_dump_all:
1275 case OPT_ast_dump_lookups:
1276 Opts.ProgramAction = frontend::ASTDump; break;
1278 Opts.ProgramAction = frontend::ASTPrint; break;
1280 Opts.ProgramAction = frontend::ASTView; break;
1281 case OPT_dump_raw_tokens:
1282 Opts.ProgramAction = frontend::DumpRawTokens; break;
1283 case OPT_dump_tokens:
1284 Opts.ProgramAction = frontend::DumpTokens; break;
1286 Opts.ProgramAction = frontend::EmitAssembly; break;
1287 case OPT_emit_llvm_bc:
1288 Opts.ProgramAction = frontend::EmitBC; break;
1290 Opts.ProgramAction = frontend::EmitHTML; break;
1292 Opts.ProgramAction = frontend::EmitLLVM; break;
1293 case OPT_emit_llvm_only:
1294 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1295 case OPT_emit_codegen_only:
1296 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1298 Opts.ProgramAction = frontend::EmitObj; break;
1300 Opts.FixItSuffix = A->getValue();
1303 Opts.ProgramAction = frontend::FixIt; break;
1304 case OPT_emit_module:
1305 Opts.ProgramAction = frontend::GenerateModule; break;
1306 case OPT_emit_module_interface:
1307 Opts.ProgramAction = frontend::GenerateModuleInterface; break;
1309 Opts.ProgramAction = frontend::GeneratePCH; break;
1311 Opts.ProgramAction = frontend::GeneratePTH; break;
1313 Opts.ProgramAction = frontend::InitOnly; break;
1314 case OPT_fsyntax_only:
1315 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1316 case OPT_module_file_info:
1317 Opts.ProgramAction = frontend::ModuleFileInfo; break;
1318 case OPT_verify_pch:
1319 Opts.ProgramAction = frontend::VerifyPCH; break;
1320 case OPT_print_decl_contexts:
1321 Opts.ProgramAction = frontend::PrintDeclContext; break;
1322 case OPT_print_preamble:
1323 Opts.ProgramAction = frontend::PrintPreamble; break;
1325 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1326 case OPT_rewrite_macros:
1327 Opts.ProgramAction = frontend::RewriteMacros; break;
1328 case OPT_rewrite_objc:
1329 Opts.ProgramAction = frontend::RewriteObjC; break;
1330 case OPT_rewrite_test:
1331 Opts.ProgramAction = frontend::RewriteTest; break;
1333 Opts.ProgramAction = frontend::RunAnalysis; break;
1335 Opts.ProgramAction = frontend::MigrateSource; break;
1337 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1341 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1342 Opts.Plugins.emplace_back(A->getValue(0));
1343 Opts.ProgramAction = frontend::PluginAction;
1344 Opts.ActionName = A->getValue();
1346 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1347 for (const Arg *AA : Args.filtered(OPT_plugin_arg))
1348 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1));
1350 for (const std::string &Arg :
1351 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) {
1352 std::string BlockName;
1353 unsigned MajorVersion;
1354 unsigned MinorVersion;
1356 std::string UserInfo;
1357 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion,
1358 MinorVersion, Hashed, UserInfo)) {
1359 Diags.Report(diag::err_test_module_file_extension_format) << Arg;
1364 // Add the testing module file extension.
1365 Opts.ModuleFileExtensions.push_back(
1366 std::make_shared<TestModuleFileExtension>(
1367 BlockName, MajorVersion, MinorVersion, Hashed, UserInfo));
1370 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1371 Opts.CodeCompletionAt =
1372 ParsedSourceLocation::FromString(A->getValue());
1373 if (Opts.CodeCompletionAt.FileName.empty())
1374 Diags.Report(diag::err_drv_invalid_value)
1375 << A->getAsString(Args) << A->getValue();
1377 Opts.DisableFree = Args.hasArg(OPT_disable_free);
1379 Opts.OutputFile = Args.getLastArgValue(OPT_o);
1380 Opts.Plugins = Args.getAllArgValues(OPT_load);
1381 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1382 Opts.ShowHelp = Args.hasArg(OPT_help);
1383 Opts.ShowStats = Args.hasArg(OPT_print_stats);
1384 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1385 Opts.ShowVersion = Args.hasArg(OPT_version);
1386 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1387 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1388 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1389 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
1390 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
1391 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
1392 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
1393 Opts.ASTDumpAll = Args.hasArg(OPT_ast_dump_all);
1394 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
1395 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
1396 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
1397 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
1398 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
1399 // Only the -fmodule-file=<file> form.
1400 for (const Arg *A : Args.filtered(OPT_fmodule_file)) {
1401 StringRef Val = A->getValue();
1402 if (Val.find('=') == StringRef::npos)
1403 Opts.ModuleFiles.push_back(Val);
1405 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ);
1406 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files);
1407 Opts.IncludeTimestamps = !Args.hasArg(OPT_fno_pch_timestamp);
1409 Opts.CodeCompleteOpts.IncludeMacros
1410 = Args.hasArg(OPT_code_completion_macros);
1411 Opts.CodeCompleteOpts.IncludeCodePatterns
1412 = Args.hasArg(OPT_code_completion_patterns);
1413 Opts.CodeCompleteOpts.IncludeGlobals
1414 = !Args.hasArg(OPT_no_code_completion_globals);
1415 Opts.CodeCompleteOpts.IncludeNamespaceLevelDecls
1416 = !Args.hasArg(OPT_no_code_completion_ns_level_decls);
1417 Opts.CodeCompleteOpts.IncludeBriefComments
1418 = Args.hasArg(OPT_code_completion_brief_comments);
1420 Opts.OverrideRecordLayoutsFile
1421 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
1423 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple));
1424 Opts.FindPchSource = Args.getLastArgValue(OPT_find_pch_source_EQ);
1425 Opts.StatsFile = Args.getLastArgValue(OPT_stats_file);
1427 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1429 OPT_arcmt_migrate)) {
1430 switch (A->getOption().getID()) {
1432 llvm_unreachable("missed a case");
1433 case OPT_arcmt_check:
1434 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1436 case OPT_arcmt_modify:
1437 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1439 case OPT_arcmt_migrate:
1440 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1444 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
1445 Opts.ARCMTMigrateReportOut
1446 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1447 Opts.ARCMTMigrateEmitARCErrors
1448 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1450 if (Args.hasArg(OPT_objcmt_migrate_literals))
1451 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
1452 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
1453 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
1454 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
1455 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
1456 if (Args.hasArg(OPT_objcmt_migrate_property))
1457 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
1458 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
1459 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
1460 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
1461 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
1462 if (Args.hasArg(OPT_objcmt_migrate_annotation))
1463 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
1464 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
1465 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
1466 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
1467 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
1468 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
1469 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
1470 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
1471 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
1472 if (Args.hasArg(OPT_objcmt_atomic_property))
1473 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
1474 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
1475 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
1476 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
1477 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
1478 if (Args.hasArg(OPT_objcmt_migrate_all))
1479 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
1481 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
1483 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
1484 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
1485 Diags.Report(diag::err_drv_argument_not_allowed_with)
1486 << "ARC migration" << "ObjC migration";
1489 InputKind DashX(InputKind::Unknown);
1490 if (const Arg *A = Args.getLastArg(OPT_x)) {
1491 StringRef XValue = A->getValue();
1493 // Parse suffixes: '<lang>(-header|[-module-map][-cpp-output])'.
1494 // FIXME: Supporting '<lang>-header-cpp-output' would be useful.
1495 bool Preprocessed = XValue.consume_back("-cpp-output");
1496 bool ModuleMap = XValue.consume_back("-module-map");
1498 !Preprocessed && !ModuleMap && XValue.consume_back("-header");
1500 // Principal languages.
1501 DashX = llvm::StringSwitch<InputKind>(XValue)
1502 .Case("c", InputKind::C)
1503 .Case("cl", InputKind::OpenCL)
1504 .Case("cuda", InputKind::CUDA)
1505 .Case("c++", InputKind::CXX)
1506 .Case("objective-c", InputKind::ObjC)
1507 .Case("objective-c++", InputKind::ObjCXX)
1508 .Case("renderscript", InputKind::RenderScript)
1509 .Default(InputKind::Unknown);
1511 // "objc[++]-cpp-output" is an acceptable synonym for
1512 // "objective-c[++]-cpp-output".
1513 if (DashX.isUnknown() && Preprocessed && !IsHeaderFile && !ModuleMap)
1514 DashX = llvm::StringSwitch<InputKind>(XValue)
1515 .Case("objc", InputKind::ObjC)
1516 .Case("objc++", InputKind::ObjCXX)
1517 .Default(InputKind::Unknown);
1519 // Some special cases cannot be combined with suffixes.
1520 if (DashX.isUnknown() && !Preprocessed && !ModuleMap && !IsHeaderFile)
1521 DashX = llvm::StringSwitch<InputKind>(XValue)
1522 .Case("cpp-output", InputKind(InputKind::C).getPreprocessed())
1523 .Case("assembler-with-cpp", InputKind::Asm)
1524 .Cases("ast", "pcm",
1525 InputKind(InputKind::Unknown, InputKind::Precompiled))
1526 .Case("ir", InputKind::LLVM_IR)
1527 .Default(InputKind::Unknown);
1529 if (DashX.isUnknown())
1530 Diags.Report(diag::err_drv_invalid_value)
1531 << A->getAsString(Args) << A->getValue();
1534 DashX = DashX.getPreprocessed();
1536 DashX = DashX.withFormat(InputKind::ModuleMap);
1539 // '-' is the default input if none is given.
1540 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1541 Opts.Inputs.clear();
1543 Inputs.push_back("-");
1544 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1545 InputKind IK = DashX;
1546 if (IK.isUnknown()) {
1547 IK = FrontendOptions::getInputKindForExtension(
1548 StringRef(Inputs[i]).rsplit('.').second);
1549 // FIXME: Warn on this?
1552 // FIXME: Remove this hack.
1557 // The -emit-module action implicitly takes a module map.
1558 if (Opts.ProgramAction == frontend::GenerateModule &&
1559 IK.getFormat() == InputKind::Source)
1560 IK = IK.withFormat(InputKind::ModuleMap);
1562 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK);
1568 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1570 std::string ClangExecutable =
1571 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1572 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
1574 // Compute the path to the resource directory.
1575 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
1576 SmallString<128> P(Dir);
1577 if (ClangResourceDir != "")
1578 llvm::sys::path::append(P, ClangResourceDir);
1580 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX,
1581 "clang", CLANG_VERSION_STRING);
1586 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args,
1587 const std::string &WorkingDir) {
1588 using namespace options;
1589 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1590 Opts.Verbose = Args.hasArg(OPT_v);
1591 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1592 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1593 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1594 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1595 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1596 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1598 // Canonicalize -fmodules-cache-path before storing it.
1599 SmallString<128> P(Args.getLastArgValue(OPT_fmodules_cache_path));
1600 if (!(P.empty() || llvm::sys::path::is_absolute(P))) {
1601 if (WorkingDir.empty())
1602 llvm::sys::fs::make_absolute(P);
1604 llvm::sys::fs::make_absolute(WorkingDir, P);
1606 llvm::sys::path::remove_dots(P);
1607 Opts.ModuleCachePath = P.str();
1609 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
1610 // Only the -fmodule-file=<name>=<file> form.
1611 for (const Arg *A : Args.filtered(OPT_fmodule_file)) {
1612 StringRef Val = A->getValue();
1613 if (Val.find('=') != StringRef::npos)
1614 Opts.PrebuiltModuleFiles.insert(Val.split('='));
1616 for (const Arg *A : Args.filtered(OPT_fprebuilt_module_path))
1617 Opts.AddPrebuiltModulePath(A->getValue());
1618 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1619 Opts.ModulesHashContent = Args.hasArg(OPT_fmodules_hash_content);
1620 Opts.ModulesValidateDiagnosticOptions =
1621 !Args.hasArg(OPT_fmodules_disable_diagnostic_validation);
1622 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps);
1623 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
1624 Opts.ModuleCachePruneInterval =
1625 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
1626 Opts.ModuleCachePruneAfter =
1627 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
1628 Opts.ModulesValidateOncePerBuildSession =
1629 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
1630 Opts.BuildSessionTimestamp =
1631 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
1632 Opts.ModulesValidateSystemHeaders =
1633 Args.hasArg(OPT_fmodules_validate_system_headers);
1634 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ))
1635 Opts.ModuleFormat = A->getValue();
1637 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) {
1638 StringRef MacroDef = A->getValue();
1639 Opts.ModulesIgnoreMacros.insert(
1640 llvm::CachedHashString(MacroDef.split('=').first));
1643 // Add -I..., -F..., and -index-header-map options in order.
1644 bool IsIndexHeaderMap = false;
1645 bool IsSysrootSpecified =
1646 Args.hasArg(OPT__sysroot_EQ) || Args.hasArg(OPT_isysroot);
1647 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) {
1648 if (A->getOption().matches(OPT_index_header_map)) {
1649 // -index-header-map applies to the next -I or -F.
1650 IsIndexHeaderMap = true;
1654 frontend::IncludeDirGroup Group =
1655 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled;
1657 bool IsFramework = A->getOption().matches(OPT_F);
1658 std::string Path = A->getValue();
1660 if (IsSysrootSpecified && !IsFramework && A->getValue()[0] == '=') {
1661 SmallString<32> Buffer;
1662 llvm::sys::path::append(Buffer, Opts.Sysroot,
1663 llvm::StringRef(A->getValue()).substr(1));
1664 Path = Buffer.str();
1667 Opts.AddPath(Path, Group, IsFramework,
1668 /*IgnoreSysroot*/ true);
1669 IsIndexHeaderMap = false;
1672 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1673 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1675 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) {
1676 if (A->getOption().matches(OPT_iprefix))
1677 Prefix = A->getValue();
1678 else if (A->getOption().matches(OPT_iwithprefix))
1679 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true);
1681 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true);
1684 for (const Arg *A : Args.filtered(OPT_idirafter))
1685 Opts.AddPath(A->getValue(), frontend::After, false, true);
1686 for (const Arg *A : Args.filtered(OPT_iquote))
1687 Opts.AddPath(A->getValue(), frontend::Quoted, false, true);
1688 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot))
1689 Opts.AddPath(A->getValue(), frontend::System, false,
1690 !A->getOption().matches(OPT_iwithsysroot));
1691 for (const Arg *A : Args.filtered(OPT_iframework))
1692 Opts.AddPath(A->getValue(), frontend::System, true, true);
1693 for (const Arg *A : Args.filtered(OPT_iframeworkwithsysroot))
1694 Opts.AddPath(A->getValue(), frontend::System, /*IsFramework=*/true,
1695 /*IgnoreSysRoot=*/false);
1697 // Add the paths for the various language specific isystem flags.
1698 for (const Arg *A : Args.filtered(OPT_c_isystem))
1699 Opts.AddPath(A->getValue(), frontend::CSystem, false, true);
1700 for (const Arg *A : Args.filtered(OPT_cxx_isystem))
1701 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true);
1702 for (const Arg *A : Args.filtered(OPT_objc_isystem))
1703 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true);
1704 for (const Arg *A : Args.filtered(OPT_objcxx_isystem))
1705 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true);
1707 // Add the internal paths from a driver that detects standard include paths.
1709 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) {
1710 frontend::IncludeDirGroup Group = frontend::System;
1711 if (A->getOption().matches(OPT_internal_externc_isystem))
1712 Group = frontend::ExternCSystem;
1713 Opts.AddPath(A->getValue(), Group, false, true);
1716 // Add the path prefixes which are implicitly treated as being system headers.
1718 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix))
1719 Opts.AddSystemHeaderPrefix(
1720 A->getValue(), A->getOption().matches(OPT_system_header_prefix));
1722 for (const Arg *A : Args.filtered(OPT_ivfsoverlay))
1723 Opts.AddVFSOverlayFile(A->getValue());
1726 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1727 const llvm::Triple &T,
1728 PreprocessorOptions &PPOpts,
1729 LangStandard::Kind LangStd) {
1730 // Set some properties which depend solely on the input kind; it would be nice
1731 // to move these to the language standard, and have the driver resolve the
1732 // input kind + language standard.
1734 // FIXME: Perhaps a better model would be for a single source file to have
1735 // multiple language standards (C / C++ std, ObjC std, OpenCL std, OpenMP std)
1736 // simultaneously active?
1737 if (IK.getLanguage() == InputKind::Asm) {
1738 Opts.AsmPreprocessor = 1;
1739 } else if (IK.isObjectiveC()) {
1740 Opts.ObjC1 = Opts.ObjC2 = 1;
1743 if (LangStd == LangStandard::lang_unspecified) {
1744 // Based on the base language, pick one.
1745 switch (IK.getLanguage()) {
1746 case InputKind::Unknown:
1747 case InputKind::LLVM_IR:
1748 llvm_unreachable("Invalid input kind!");
1749 case InputKind::OpenCL:
1750 LangStd = LangStandard::lang_opencl10;
1752 case InputKind::CUDA:
1753 LangStd = LangStandard::lang_cuda;
1755 case InputKind::Asm:
1757 // The PS4 uses C99 as the default C standard.
1759 LangStd = LangStandard::lang_gnu99;
1761 LangStd = LangStandard::lang_gnu11;
1763 case InputKind::ObjC:
1764 LangStd = LangStandard::lang_gnu11;
1766 case InputKind::CXX:
1767 case InputKind::ObjCXX:
1768 LangStd = LangStandard::lang_gnucxx14;
1770 case InputKind::RenderScript:
1771 LangStd = LangStandard::lang_c99;
1776 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1777 Opts.LineComment = Std.hasLineComments();
1778 Opts.C99 = Std.isC99();
1779 Opts.C11 = Std.isC11();
1780 Opts.C17 = Std.isC17();
1781 Opts.CPlusPlus = Std.isCPlusPlus();
1782 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1783 Opts.CPlusPlus14 = Std.isCPlusPlus14();
1784 Opts.CPlusPlus17 = Std.isCPlusPlus17();
1785 Opts.CPlusPlus2a = Std.isCPlusPlus2a();
1786 Opts.Digraphs = Std.hasDigraphs();
1787 Opts.GNUMode = Std.isGNUMode();
1788 Opts.GNUInline = !Opts.C99 && !Opts.CPlusPlus;
1789 Opts.HexFloats = Std.hasHexFloats();
1790 Opts.ImplicitInt = Std.hasImplicitInt();
1792 // Set OpenCL Version.
1793 Opts.OpenCL = Std.isOpenCL();
1794 if (LangStd == LangStandard::lang_opencl10)
1795 Opts.OpenCLVersion = 100;
1796 else if (LangStd == LangStandard::lang_opencl11)
1797 Opts.OpenCLVersion = 110;
1798 else if (LangStd == LangStandard::lang_opencl12)
1799 Opts.OpenCLVersion = 120;
1800 else if (LangStd == LangStandard::lang_opencl20)
1801 Opts.OpenCLVersion = 200;
1803 // OpenCL has some additional defaults.
1807 Opts.LaxVectorConversions = 0;
1808 Opts.setDefaultFPContractMode(LangOptions::FPC_On);
1809 Opts.NativeHalfType = 1;
1810 Opts.NativeHalfArgsAndReturns = 1;
1811 // Include default header file for OpenCL.
1812 if (Opts.IncludeDefaultHeader) {
1813 PPOpts.Includes.push_back("opencl-c.h");
1817 Opts.CUDA = IK.getLanguage() == InputKind::CUDA;
1819 // Set default FP_CONTRACT to FAST.
1820 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast);
1822 Opts.RenderScript = IK.getLanguage() == InputKind::RenderScript;
1823 if (Opts.RenderScript) {
1824 Opts.NativeHalfType = 1;
1825 Opts.NativeHalfArgsAndReturns = 1;
1828 // OpenCL and C++ both have bool, true, false keywords.
1829 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1831 // OpenCL has half keyword
1832 Opts.Half = Opts.OpenCL;
1834 // C++ has wchar_t keyword.
1835 Opts.WChar = Opts.CPlusPlus;
1837 Opts.GNUKeywords = Opts.GNUMode;
1838 Opts.CXXOperatorNames = Opts.CPlusPlus;
1840 Opts.AlignedAllocation = Opts.CPlusPlus17;
1842 Opts.DollarIdents = !Opts.AsmPreprocessor;
1845 /// Attempt to parse a visibility value out of the given argument.
1846 static Visibility parseVisibility(Arg *arg, ArgList &args,
1847 DiagnosticsEngine &diags) {
1848 StringRef value = arg->getValue();
1849 if (value == "default") {
1850 return DefaultVisibility;
1851 } else if (value == "hidden" || value == "internal") {
1852 return HiddenVisibility;
1853 } else if (value == "protected") {
1854 // FIXME: diagnose if target does not support protected visibility
1855 return ProtectedVisibility;
1858 diags.Report(diag::err_drv_invalid_value)
1859 << arg->getAsString(args) << value;
1860 return DefaultVisibility;
1863 /// Check if input file kind and language standard are compatible.
1864 static bool IsInputCompatibleWithStandard(InputKind IK,
1865 const LangStandard &S) {
1866 switch (IK.getLanguage()) {
1867 case InputKind::Unknown:
1868 case InputKind::LLVM_IR:
1869 llvm_unreachable("should not parse language flags for this input");
1872 case InputKind::ObjC:
1873 case InputKind::RenderScript:
1874 return S.getLanguage() == InputKind::C;
1876 case InputKind::OpenCL:
1877 return S.getLanguage() == InputKind::OpenCL;
1879 case InputKind::CXX:
1880 case InputKind::ObjCXX:
1881 return S.getLanguage() == InputKind::CXX;
1883 case InputKind::CUDA:
1884 // FIXME: What -std= values should be permitted for CUDA compilations?
1885 return S.getLanguage() == InputKind::CUDA ||
1886 S.getLanguage() == InputKind::CXX;
1888 case InputKind::Asm:
1889 // Accept (and ignore) all -std= values.
1890 // FIXME: The -std= value is not ignored; it affects the tokenization
1891 // and preprocessing rules if we're preprocessing this asm input.
1895 llvm_unreachable("unexpected input language");
1898 /// Get language name for given input kind.
1899 static const StringRef GetInputKindName(InputKind IK) {
1900 switch (IK.getLanguage()) {
1903 case InputKind::ObjC:
1904 return "Objective-C";
1905 case InputKind::CXX:
1907 case InputKind::ObjCXX:
1908 return "Objective-C++";
1909 case InputKind::OpenCL:
1911 case InputKind::CUDA:
1913 case InputKind::RenderScript:
1914 return "RenderScript";
1916 case InputKind::Asm:
1918 case InputKind::LLVM_IR:
1921 case InputKind::Unknown:
1924 llvm_unreachable("unknown input language");
1927 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1928 const TargetOptions &TargetOpts,
1929 PreprocessorOptions &PPOpts,
1930 DiagnosticsEngine &Diags) {
1931 // FIXME: Cleanup per-file based stuff.
1932 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1933 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1934 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1935 #define LANGSTANDARD(id, name, lang, desc, features) \
1936 .Case(name, LangStandard::lang_##id)
1937 #define LANGSTANDARD_ALIAS(id, alias) \
1938 .Case(alias, LangStandard::lang_##id)
1939 #include "clang/Frontend/LangStandards.def"
1940 .Default(LangStandard::lang_unspecified);
1941 if (LangStd == LangStandard::lang_unspecified) {
1942 Diags.Report(diag::err_drv_invalid_value)
1943 << A->getAsString(Args) << A->getValue();
1944 // Report supported standards with short description.
1945 for (unsigned KindValue = 0;
1946 KindValue != LangStandard::lang_unspecified;
1948 const LangStandard &Std = LangStandard::getLangStandardForKind(
1949 static_cast<LangStandard::Kind>(KindValue));
1950 if (IsInputCompatibleWithStandard(IK, Std)) {
1951 auto Diag = Diags.Report(diag::note_drv_use_standard);
1952 Diag << Std.getName() << Std.getDescription();
1953 unsigned NumAliases = 0;
1954 #define LANGSTANDARD(id, name, lang, desc, features)
1955 #define LANGSTANDARD_ALIAS(id, alias) \
1956 if (KindValue == LangStandard::lang_##id) ++NumAliases;
1957 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
1958 #include "clang/Frontend/LangStandards.def"
1960 #define LANGSTANDARD(id, name, lang, desc, features)
1961 #define LANGSTANDARD_ALIAS(id, alias) \
1962 if (KindValue == LangStandard::lang_##id) Diag << alias;
1963 #define LANGSTANDARD_ALIAS_DEPR(id, alias)
1964 #include "clang/Frontend/LangStandards.def"
1968 // Valid standard, check to make sure language and standard are
1970 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1971 if (!IsInputCompatibleWithStandard(IK, Std)) {
1972 Diags.Report(diag::err_drv_argument_not_allowed_with)
1973 << A->getAsString(Args) << GetInputKindName(IK);
1978 // -cl-std only applies for OpenCL language standards.
1979 // Override the -std option in this case.
1980 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1981 LangStandard::Kind OpenCLLangStd
1982 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1983 .Cases("cl", "CL", LangStandard::lang_opencl10)
1984 .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11)
1985 .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12)
1986 .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20)
1987 .Default(LangStandard::lang_unspecified);
1989 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1990 Diags.Report(diag::err_drv_invalid_value)
1991 << A->getAsString(Args) << A->getValue();
1994 LangStd = OpenCLLangStd;
1997 Opts.IncludeDefaultHeader = Args.hasArg(OPT_finclude_default_header);
1999 llvm::Triple T(TargetOpts.Triple);
2000 CompilerInvocation::setLangDefaults(Opts, IK, T, PPOpts, LangStd);
2002 // -cl-strict-aliasing needs to emit diagnostic in the case where CL > 1.0.
2003 // This option should be deprecated for CL > 1.0 because
2004 // this option was added for compatibility with OpenCL 1.0.
2005 if (Args.getLastArg(OPT_cl_strict_aliasing)
2006 && Opts.OpenCLVersion > 100) {
2007 std::string VerSpec = llvm::to_string(Opts.OpenCLVersion / 100) +
2009 llvm::to_string((Opts.OpenCLVersion % 100) / 10);
2010 Diags.Report(diag::warn_option_invalid_ocl_version)
2011 << VerSpec << Args.getLastArg(OPT_cl_strict_aliasing)->getAsString(Args);
2014 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
2015 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
2016 // while a subset (the non-C++ GNU keywords) is provided by GCC's
2017 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
2018 // name, as it doesn't seem a useful distinction.
2019 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
2022 if (Args.hasArg(OPT_fno_operator_names))
2023 Opts.CXXOperatorNames = 0;
2025 if (Args.hasArg(OPT_fcuda_is_device))
2026 Opts.CUDAIsDevice = 1;
2028 if (Args.hasArg(OPT_fcuda_allow_variadic_functions))
2029 Opts.CUDAAllowVariadicFunctions = 1;
2031 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr))
2032 Opts.CUDAHostDeviceConstexpr = 0;
2034 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero))
2035 Opts.CUDADeviceFlushDenormalsToZero = 1;
2037 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_approx_transcendentals))
2038 Opts.CUDADeviceApproxTranscendentals = 1;
2041 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
2042 StringRef value = arg->getValue();
2043 if (Opts.ObjCRuntime.tryParse(value))
2044 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
2047 if (Args.hasArg(OPT_fobjc_gc_only))
2048 Opts.setGC(LangOptions::GCOnly);
2049 else if (Args.hasArg(OPT_fobjc_gc))
2050 Opts.setGC(LangOptions::HybridGC);
2051 else if (Args.hasArg(OPT_fobjc_arc)) {
2052 Opts.ObjCAutoRefCount = 1;
2053 if (!Opts.ObjCRuntime.allowsARC())
2054 Diags.Report(diag::err_arc_unsupported_on_runtime);
2057 // ObjCWeakRuntime tracks whether the runtime supports __weak, not
2058 // whether the feature is actually enabled. This is predominantly
2059 // determined by -fobjc-runtime, but we allow it to be overridden
2060 // from the command line for testing purposes.
2061 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
2062 Opts.ObjCWeakRuntime = 1;
2064 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak();
2066 // ObjCWeak determines whether __weak is actually enabled.
2067 // Note that we allow -fno-objc-weak to disable this even in ARC mode.
2068 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) {
2069 if (!weakArg->getOption().matches(OPT_fobjc_weak)) {
2070 assert(!Opts.ObjCWeak);
2071 } else if (Opts.getGC() != LangOptions::NonGC) {
2072 Diags.Report(diag::err_objc_weak_with_gc);
2073 } else if (!Opts.ObjCWeakRuntime) {
2074 Diags.Report(diag::err_objc_weak_unsupported);
2078 } else if (Opts.ObjCAutoRefCount) {
2079 Opts.ObjCWeak = Opts.ObjCWeakRuntime;
2082 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
2083 Opts.ObjCInferRelatedResultType = 0;
2085 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
2086 Opts.ObjCSubscriptingLegacyRuntime =
2087 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
2090 if (Args.hasArg(OPT_fgnu89_inline)) {
2092 Diags.Report(diag::err_drv_argument_not_allowed_with)
2093 << "-fgnu89-inline" << GetInputKindName(IK);
2098 if (Args.hasArg(OPT_fapple_kext)) {
2099 if (!Opts.CPlusPlus)
2100 Diags.Report(diag::warn_c_kext);
2105 if (Args.hasArg(OPT_print_ivar_layout))
2106 Opts.ObjCGCBitmapPrint = 1;
2107 if (Args.hasArg(OPT_fno_constant_cfstrings))
2108 Opts.NoConstantCFStrings = 1;
2110 if (Args.hasArg(OPT_fzvector))
2113 if (Args.hasArg(OPT_pthread))
2114 Opts.POSIXThreads = 1;
2116 // The value-visibility mode defaults to "default".
2117 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
2118 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
2120 Opts.setValueVisibilityMode(DefaultVisibility);
2123 // The type-visibility mode defaults to the value-visibility mode.
2124 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
2125 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
2127 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
2130 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
2131 Opts.InlineVisibilityHidden = 1;
2133 if (Args.hasArg(OPT_ftrapv)) {
2134 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
2135 // Set the handler, if one is specified.
2136 Opts.OverflowHandler =
2137 Args.getLastArgValue(OPT_ftrapv_handler);
2139 else if (Args.hasArg(OPT_fwrapv))
2140 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
2142 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
2143 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
2144 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
2145 Opts.MSCompatibilityVersion = 0;
2146 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) {
2148 if (VT.tryParse(A->getValue()))
2149 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
2151 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 +
2152 VT.getMinor().getValueOr(0) * 100000 +
2153 VT.getSubminor().getValueOr(0);
2156 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
2157 // is specified, or -std is set to a conforming mode.
2158 // Trigraphs are disabled by default in c++1z onwards.
2159 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus17;
2161 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
2163 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
2164 OPT_fno_dollars_in_identifiers,
2166 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
2167 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
2168 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
2169 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
2170 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
2172 if (Args.hasArg(OPT_fno_lax_vector_conversions))
2173 Opts.LaxVectorConversions = 0;
2174 if (Args.hasArg(OPT_fno_threadsafe_statics))
2175 Opts.ThreadsafeStatics = 0;
2176 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
2177 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
2178 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
2180 // Handle exception personalities
2181 Arg *A = Args.getLastArg(options::OPT_fsjlj_exceptions,
2182 options::OPT_fseh_exceptions,
2183 options::OPT_fdwarf_exceptions);
2185 const Option &Opt = A->getOption();
2186 Opts.SjLjExceptions = Opt.matches(options::OPT_fsjlj_exceptions);
2187 Opts.SEHExceptions = Opt.matches(options::OPT_fseh_exceptions);
2188 Opts.DWARFExceptions = Opt.matches(options::OPT_fdwarf_exceptions);
2191 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind);
2192 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
2194 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti);
2195 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
2196 Opts.Blocks = Args.hasArg(OPT_fblocks) || (Opts.OpenCL
2197 && Opts.OpenCLVersion >= 200);
2198 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
2199 Opts.CoroutinesTS = Args.hasArg(OPT_fcoroutines_ts);
2201 // Enable [[]] attributes in C++11 by default.
2202 Opts.DoubleSquareBracketAttributes =
2203 Args.hasFlag(OPT_fdouble_square_bracket_attributes,
2204 OPT_fno_double_square_bracket_attributes, Opts.CPlusPlus11);
2206 Opts.ModulesTS = Args.hasArg(OPT_fmodules_ts);
2207 Opts.Modules = Args.hasArg(OPT_fmodules) || Opts.ModulesTS;
2208 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
2209 Opts.ModulesDeclUse =
2210 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
2211 Opts.ModulesLocalVisibility =
2212 Args.hasArg(OPT_fmodules_local_submodule_visibility) || Opts.ModulesTS;
2213 Opts.ModulesCodegen = Args.hasArg(OPT_fmodules_codegen);
2214 Opts.ModulesDebugInfo = Args.hasArg(OPT_fmodules_debuginfo);
2215 Opts.ModulesSearchAll = Opts.Modules &&
2216 !Args.hasArg(OPT_fno_modules_search_all) &&
2217 Args.hasArg(OPT_fmodules_search_all);
2218 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
2219 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules);
2220 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
2221 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
2222 if (const Arg *A = Args.getLastArg(OPT_fwchar_type_EQ)) {
2223 Opts.WCharSize = llvm::StringSwitch<unsigned>(A->getValue())
2228 if (Opts.WCharSize == 0)
2229 Diags.Report(diag::err_fe_invalid_wchar_type) << A->getValue();
2231 Opts.WCharIsSigned = Args.hasFlag(OPT_fsigned_wchar, OPT_fno_signed_wchar, true);
2232 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
2233 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
2234 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
2235 if (!Opts.NoBuiltin)
2236 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
2237 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
2238 Opts.RelaxedTemplateTemplateArgs =
2239 Args.hasArg(OPT_frelaxed_template_template_args);
2240 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation);
2241 Opts.AlignedAllocation =
2242 Args.hasFlag(OPT_faligned_allocation, OPT_fno_aligned_allocation,
2243 Opts.AlignedAllocation);
2244 Opts.AlignedAllocationUnavailable =
2245 Opts.AlignedAllocation && Args.hasArg(OPT_aligned_alloc_unavailable);
2246 Opts.NewAlignOverride =
2247 getLastArgIntValue(Args, OPT_fnew_alignment_EQ, 0, Diags);
2248 if (Opts.NewAlignOverride && !llvm::isPowerOf2_32(Opts.NewAlignOverride)) {
2249 Arg *A = Args.getLastArg(OPT_fnew_alignment_EQ);
2250 Diags.Report(diag::err_fe_invalid_alignment) << A->getAsString(Args)
2252 Opts.NewAlignOverride = 0;
2254 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts);
2255 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
2256 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
2257 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
2258 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
2259 Opts.InstantiationDepth =
2260 getLastArgIntValue(Args, OPT_ftemplate_depth, 1024, Diags);
2262 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
2263 Opts.ConstexprCallDepth =
2264 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
2265 Opts.ConstexprStepLimit =
2266 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
2267 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
2268 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
2269 Opts.NumLargeByValueCopy =
2270 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
2271 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
2272 Opts.ObjCConstantStringClass =
2273 Args.getLastArgValue(OPT_fconstant_string_class);
2274 Opts.ObjCDefaultSynthProperties =
2275 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
2276 Opts.EncodeExtendedBlockSig =
2277 Args.hasArg(OPT_fencode_extended_block_signature);
2278 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
2279 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
2280 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
2281 Opts.AlignDouble = Args.hasArg(OPT_malign_double);
2282 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2283 Opts.PIE = Args.hasArg(OPT_pic_is_pie);
2284 Opts.Static = Args.hasArg(OPT_static_define);
2285 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
2286 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
2287 || Args.hasArg(OPT_fdump_record_layouts);
2288 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
2289 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
2290 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
2291 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
2292 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
2293 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
2294 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
2295 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
2296 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
2297 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
2298 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
2299 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
2300 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name_EQ);
2301 Opts.AppExt = Args.hasArg(OPT_fapplication_extension);
2302 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature);
2303 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end());
2304 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type);
2305 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns);
2306 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns
2308 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns)
2309 | Opts.NativeHalfArgsAndReturns;
2310 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm);
2312 // __declspec is enabled by default for the PS4 by the driver, and also
2313 // enabled for Microsoft Extensions or Borland Extensions, here.
2315 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a
2316 // CUDA extension. However, it is required for supporting
2317 // __clang_cuda_builtin_vars.h, which uses __declspec(property). Once that has
2318 // been rewritten in terms of something more generic, remove the Opts.CUDA
2320 Opts.DeclSpecKeyword =
2321 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec,
2322 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA));
2324 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
2325 switch (llvm::StringSwitch<unsigned>(A->getValue())
2326 .Case("target", LangOptions::ASMM_Target)
2327 .Case("no", LangOptions::ASMM_Off)
2328 .Case("yes", LangOptions::ASMM_On)
2331 Diags.Report(diag::err_drv_invalid_value)
2332 << "-faddress-space-map-mangling=" << A->getValue();
2334 case LangOptions::ASMM_Target:
2335 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
2337 case LangOptions::ASMM_On:
2338 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
2340 case LangOptions::ASMM_Off:
2341 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
2346 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
2347 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
2348 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
2351 LangOptions::PPTMK_FullGeneralitySingleInheritance)
2353 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
2355 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
2356 .Default(LangOptions::PPTMK_BestCase);
2357 if (InheritanceModel == LangOptions::PPTMK_BestCase)
2358 Diags.Report(diag::err_drv_invalid_value)
2359 << "-fms-memptr-rep=" << A->getValue();
2361 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
2364 // Check for MS default calling conventions being specified.
2365 if (Arg *A = Args.getLastArg(OPT_fdefault_calling_conv_EQ)) {
2366 LangOptions::DefaultCallingConvention DefaultCC =
2367 llvm::StringSwitch<LangOptions::DefaultCallingConvention>(A->getValue())
2368 .Case("cdecl", LangOptions::DCC_CDecl)
2369 .Case("fastcall", LangOptions::DCC_FastCall)
2370 .Case("stdcall", LangOptions::DCC_StdCall)
2371 .Case("vectorcall", LangOptions::DCC_VectorCall)
2372 .Case("regcall", LangOptions::DCC_RegCall)
2373 .Default(LangOptions::DCC_None);
2374 if (DefaultCC == LangOptions::DCC_None)
2375 Diags.Report(diag::err_drv_invalid_value)
2376 << "-fdefault-calling-conv=" << A->getValue();
2378 llvm::Triple T(TargetOpts.Triple);
2379 llvm::Triple::ArchType Arch = T.getArch();
2380 bool emitError = (DefaultCC == LangOptions::DCC_FastCall ||
2381 DefaultCC == LangOptions::DCC_StdCall) &&
2382 Arch != llvm::Triple::x86;
2383 emitError |= (DefaultCC == LangOptions::DCC_VectorCall ||
2384 DefaultCC == LangOptions::DCC_RegCall) &&
2385 !(Arch == llvm::Triple::x86 || Arch == llvm::Triple::x86_64);
2387 Diags.Report(diag::err_drv_argument_not_allowed_with)
2388 << A->getSpelling() << T.getTriple();
2390 Opts.setDefaultCallingConv(DefaultCC);
2394 if (Arg *A = Args.getLastArg(OPT_mrtd)) {
2395 if (Opts.getDefaultCallingConv() != LangOptions::DCC_None)
2396 Diags.Report(diag::err_drv_argument_not_allowed_with)
2397 << A->getSpelling() << "-fdefault-calling-conv";
2399 llvm::Triple T(TargetOpts.Triple);
2400 if (T.getArch() != llvm::Triple::x86)
2401 Diags.Report(diag::err_drv_argument_not_allowed_with)
2402 << A->getSpelling() << T.getTriple();
2404 Opts.setDefaultCallingConv(LangOptions::DCC_StdCall);
2408 // Check if -fopenmp is specified.
2409 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp) ? 1 : 0;
2410 // Check if -fopenmp-simd is specified.
2411 Opts.OpenMPSimd = !Opts.OpenMP && Args.hasFlag(options::OPT_fopenmp_simd,
2412 options::OPT_fno_openmp_simd,
2415 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls);
2416 Opts.OpenMPIsDevice =
2417 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device);
2419 if (Opts.OpenMP || Opts.OpenMPSimd) {
2421 getLastArgIntValue(Args, OPT_fopenmp_version_EQ,
2422 Opts.OpenMPSimd ? 45 : Opts.OpenMP, Diags))
2423 Opts.OpenMP = Version;
2424 else if (Opts.OpenMPSimd)
2426 // Provide diagnostic when a given target is not expected to be an OpenMP
2428 if (!Opts.OpenMPIsDevice) {
2429 switch (T.getArch()) {
2432 // Add unsupported host targets here:
2433 case llvm::Triple::nvptx:
2434 case llvm::Triple::nvptx64:
2435 Diags.Report(clang::diag::err_drv_omp_host_target_not_supported)
2436 << TargetOpts.Triple;
2442 // Set the flag to prevent the implementation from emitting device exception
2443 // handling code for those requiring so.
2444 if (Opts.OpenMPIsDevice && T.isNVPTX()) {
2445 Opts.Exceptions = 0;
2446 Opts.CXXExceptions = 0;
2449 // Get the OpenMP target triples if any.
2450 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_targets_EQ)) {
2452 for (unsigned i = 0; i < A->getNumValues(); ++i) {
2453 llvm::Triple TT(A->getValue(i));
2455 if (TT.getArch() == llvm::Triple::UnknownArch ||
2456 !(TT.getArch() == llvm::Triple::ppc ||
2457 TT.getArch() == llvm::Triple::ppc64 ||
2458 TT.getArch() == llvm::Triple::ppc64le ||
2459 TT.getArch() == llvm::Triple::nvptx ||
2460 TT.getArch() == llvm::Triple::nvptx64 ||
2461 TT.getArch() == llvm::Triple::x86 ||
2462 TT.getArch() == llvm::Triple::x86_64))
2463 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i);
2465 Opts.OMPTargetTriples.push_back(TT);
2469 // Get OpenMP host file path if any and report if a non existent file is
2471 if (Arg *A = Args.getLastArg(options::OPT_fopenmp_host_ir_file_path)) {
2472 Opts.OMPHostIRFile = A->getValue();
2473 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile))
2474 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found)
2475 << Opts.OMPHostIRFile;
2478 // Record whether the __DEPRECATED define was requested.
2479 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
2480 OPT_fno_deprecated_macro,
2483 // FIXME: Eliminate this dependency.
2484 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
2485 OptSize = getOptimizationLevelSize(Args);
2486 Opts.Optimize = Opt != 0;
2487 Opts.OptimizeSize = OptSize != 0;
2489 // This is the __NO_INLINE__ define, which just depends on things like the
2490 // optimization level and -fno-inline, not actually whether the backend has
2491 // inlining enabled.
2492 Opts.NoInlineDefine = !Opts.Optimize;
2493 if (Arg *InlineArg = Args.getLastArg(
2494 options::OPT_finline_functions, options::OPT_finline_hint_functions,
2495 options::OPT_fno_inline_functions, options::OPT_fno_inline))
2496 if (InlineArg->getOption().matches(options::OPT_fno_inline))
2497 Opts.NoInlineDefine = true;
2499 Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
2500 Args.hasArg(OPT_cl_fast_relaxed_math);
2501 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
2502 Args.hasArg(OPT_cl_finite_math_only) ||
2503 Args.hasArg(OPT_cl_fast_relaxed_math);
2504 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
2505 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
2506 Args.hasArg(OPT_cl_fast_relaxed_math);
2508 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
2509 StringRef Val = A->getValue();
2511 Opts.setDefaultFPContractMode(LangOptions::FPC_Fast);
2512 else if (Val == "on")
2513 Opts.setDefaultFPContractMode(LangOptions::FPC_On);
2514 else if (Val == "off")
2515 Opts.setDefaultFPContractMode(LangOptions::FPC_Off);
2517 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
2520 Opts.RetainCommentsFromSystemHeaders =
2521 Args.hasArg(OPT_fretain_comments_from_system_headers);
2523 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
2526 Diags.Report(diag::err_drv_invalid_value)
2527 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
2529 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
2530 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
2531 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
2532 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
2535 // Parse -fsanitize= arguments.
2536 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2537 Diags, Opts.Sanitize);
2538 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
2539 Opts.SanitizeAddressFieldPadding =
2540 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
2541 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist);
2543 // -fxray-instrument
2544 Opts.XRayInstrument =
2545 Args.hasFlag(OPT_fxray_instrument, OPT_fnoxray_instrument, false);
2547 // -fxray-always-emit-customevents
2548 Opts.XRayAlwaysEmitCustomEvents =
2549 Args.hasFlag(OPT_fxray_always_emit_customevents,
2550 OPT_fnoxray_always_emit_customevents, false);
2552 // -fxray-{always,never}-instrument= filenames.
2553 Opts.XRayAlwaysInstrumentFiles =
2554 Args.getAllArgValues(OPT_fxray_always_instrument);
2555 Opts.XRayNeverInstrumentFiles =
2556 Args.getAllArgValues(OPT_fxray_never_instrument);
2558 // -fallow-editor-placeholders
2559 Opts.AllowEditorPlaceholders = Args.hasArg(OPT_fallow_editor_placeholders);
2562 static bool isStrictlyPreprocessorAction(frontend::ActionKind Action) {
2564 case frontend::ASTDeclList:
2565 case frontend::ASTDump:
2566 case frontend::ASTPrint:
2567 case frontend::ASTView:
2568 case frontend::EmitAssembly:
2569 case frontend::EmitBC:
2570 case frontend::EmitHTML:
2571 case frontend::EmitLLVM:
2572 case frontend::EmitLLVMOnly:
2573 case frontend::EmitCodeGenOnly:
2574 case frontend::EmitObj:
2575 case frontend::FixIt:
2576 case frontend::GenerateModule:
2577 case frontend::GenerateModuleInterface:
2578 case frontend::GeneratePCH:
2579 case frontend::GeneratePTH:
2580 case frontend::ParseSyntaxOnly:
2581 case frontend::ModuleFileInfo:
2582 case frontend::VerifyPCH:
2583 case frontend::PluginAction:
2584 case frontend::PrintDeclContext:
2585 case frontend::RewriteObjC:
2586 case frontend::RewriteTest:
2587 case frontend::RunAnalysis:
2588 case frontend::MigrateSource:
2591 case frontend::DumpRawTokens:
2592 case frontend::DumpTokens:
2593 case frontend::InitOnly:
2594 case frontend::PrintPreamble:
2595 case frontend::PrintPreprocessedInput:
2596 case frontend::RewriteMacros:
2597 case frontend::RunPreprocessorOnly:
2600 llvm_unreachable("invalid frontend action");
2603 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
2604 FileManager &FileMgr,
2605 DiagnosticsEngine &Diags,
2606 frontend::ActionKind Action) {
2607 using namespace options;
2608 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
2609 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
2610 if (const Arg *A = Args.getLastArg(OPT_token_cache))
2611 Opts.TokenCache = A->getValue();
2613 Opts.TokenCache = Opts.ImplicitPTHInclude;
2614 Opts.UsePredefines = !Args.hasArg(OPT_undef);
2615 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
2616 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
2617 Opts.AllowPCHWithCompilerErrors = Args.hasArg(OPT_fallow_pch_with_errors);
2619 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
2620 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl))
2621 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
2623 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
2624 StringRef Value(A->getValue());
2625 size_t Comma = Value.find(',');
2627 unsigned EndOfLine = 0;
2629 if (Comma == StringRef::npos ||
2630 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
2631 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
2632 Diags.Report(diag::err_drv_preamble_format);
2634 Opts.PrecompiledPreambleBytes.first = Bytes;
2635 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
2639 // Add macros from the command line.
2640 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) {
2641 if (A->getOption().matches(OPT_D))
2642 Opts.addMacroDef(A->getValue());
2644 Opts.addMacroUndef(A->getValue());
2647 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
2649 // Add the ordered list of -includes.
2650 for (const Arg *A : Args.filtered(OPT_include))
2651 Opts.Includes.emplace_back(A->getValue());
2653 for (const Arg *A : Args.filtered(OPT_chain_include))
2654 Opts.ChainedIncludes.emplace_back(A->getValue());
2656 for (const Arg *A : Args.filtered(OPT_remap_file)) {
2657 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';');
2659 if (Split.second.empty()) {
2660 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
2664 Opts.addRemappedFile(Split.first, Split.second);
2667 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
2668 StringRef Name = A->getValue();
2669 unsigned Library = llvm::StringSwitch<unsigned>(Name)
2670 .Case("libc++", ARCXX_libcxx)
2671 .Case("libstdc++", ARCXX_libstdcxx)
2672 .Case("none", ARCXX_nolib)
2675 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
2677 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
2680 // Always avoid lexing editor placeholders when we're just running the
2681 // preprocessor as we never want to emit the
2682 // "editor placeholder in source file" error in PP only mode.
2683 if (isStrictlyPreprocessorAction(Action))
2684 Opts.LexEditorPlaceholders = false;
2687 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
2689 frontend::ActionKind Action) {
2690 using namespace options;
2692 if (isStrictlyPreprocessorAction(Action))
2693 Opts.ShowCPP = !Args.hasArg(OPT_dM);
2697 Opts.ShowComments = Args.hasArg(OPT_C);
2698 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
2699 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
2700 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
2701 Opts.ShowIncludeDirectives = Args.hasArg(OPT_dI);
2702 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
2703 Opts.RewriteImports = Args.hasArg(OPT_frewrite_imports);
2704 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives);
2707 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args,
2708 DiagnosticsEngine &Diags) {
2709 using namespace options;
2710 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
2711 if (Arg *A = Args.getLastArg(OPT_meabi)) {
2712 StringRef Value = A->getValue();
2713 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value)
2714 .Case("default", llvm::EABI::Default)
2715 .Case("4", llvm::EABI::EABI4)
2716 .Case("5", llvm::EABI::EABI5)
2717 .Case("gnu", llvm::EABI::GNU)
2718 .Default(llvm::EABI::Unknown);
2719 if (EABIVersion == llvm::EABI::Unknown)
2720 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
2723 Opts.EABIVersion = EABIVersion;
2725 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
2726 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
2727 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
2728 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
2729 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
2730 // Use the default target triple if unspecified.
2731 if (Opts.Triple.empty())
2732 Opts.Triple = llvm::sys::getDefaultTargetTriple();
2733 Opts.OpenCLExtensionsAsWritten = Args.getAllArgValues(OPT_cl_ext_EQ);
2736 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
2737 const char *const *ArgBegin,
2738 const char *const *ArgEnd,
2739 DiagnosticsEngine &Diags) {
2740 bool Success = true;
2742 // Parse the arguments.
2743 std::unique_ptr<OptTable> Opts = createDriverOptTable();
2744 const unsigned IncludedFlagsBitmask = options::CC1Option;
2745 unsigned MissingArgIndex, MissingArgCount;
2747 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex,
2748 MissingArgCount, IncludedFlagsBitmask);
2749 LangOptions &LangOpts = *Res.getLangOpts();
2751 // Check for missing argument error.
2752 if (MissingArgCount) {
2753 Diags.Report(diag::err_drv_missing_argument)
2754 << Args.getArgString(MissingArgIndex) << MissingArgCount;
2758 // Issue errors on unknown arguments.
2759 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) {
2760 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args);
2764 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags);
2765 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args);
2766 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args);
2768 ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags,
2769 false /*DefaultDiagColor*/, false /*DefaultShowOpt*/);
2770 ParseCommentArgs(LangOpts.CommentOpts, Args);
2771 ParseFileSystemArgs(Res.getFileSystemOpts(), Args);
2772 // FIXME: We shouldn't have to pass the DashX option around here
2773 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags,
2774 LangOpts.IsHeaderFile);
2775 ParseTargetArgs(Res.getTargetOpts(), Args, Diags);
2776 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags,
2777 Res.getTargetOpts());
2778 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args,
2779 Res.getFileSystemOpts().WorkingDir);
2780 if (DashX.getFormat() == InputKind::Precompiled ||
2781 DashX.getLanguage() == InputKind::LLVM_IR) {
2782 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the
2783 // PassManager in BackendUtil.cpp. They need to be initializd no matter
2784 // what the input type is.
2785 if (Args.hasArg(OPT_fobjc_arc))
2786 LangOpts.ObjCAutoRefCount = 1;
2787 // PIClevel and PIELevel are needed during code generation and this should be
2788 // set regardless of the input type.
2789 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2790 LangOpts.PIE = Args.hasArg(OPT_pic_is_pie);
2791 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2792 Diags, LangOpts.Sanitize);
2794 // Other LangOpts are only initialzed when the input is not AST or LLVM IR.
2795 // FIXME: Should we really be calling this for an InputKind::Asm input?
2796 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(),
2797 Res.getPreprocessorOpts(), Diags);
2798 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2799 LangOpts.ObjCExceptions = 1;
2802 if (LangOpts.CUDA) {
2803 // During CUDA device-side compilation, the aux triple is the
2804 // triple used for host compilation.
2805 if (LangOpts.CUDAIsDevice)
2806 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
2809 // Set the triple of the host for OpenMP device compile.
2810 if (LangOpts.OpenMPIsDevice)
2811 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
2813 // FIXME: Override value name discarding when asan or msan is used because the
2814 // backend passes depend on the name of the alloca in order to print out
2816 Res.getCodeGenOpts().DiscardValueNames &=
2817 !LangOpts.Sanitize.has(SanitizerKind::Address) &&
2818 !LangOpts.Sanitize.has(SanitizerKind::Memory);
2820 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
2821 // PCH file and find the original header name. Remove the need to do that in
2822 // ParsePreprocessorArgs and remove the FileManager
2823 // parameters from the function and the "FileManager.h" #include.
2824 FileManager FileMgr(Res.getFileSystemOpts());
2825 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags,
2826 Res.getFrontendOpts().ProgramAction);
2827 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args,
2828 Res.getFrontendOpts().ProgramAction);
2830 // Turn on -Wspir-compat for SPIR target.
2831 llvm::Triple T(Res.getTargetOpts().Triple);
2832 auto Arch = T.getArch();
2833 if (Arch == llvm::Triple::spir || Arch == llvm::Triple::spir64) {
2834 Res.getDiagnosticOpts().Warnings.push_back("spir-compat");
2837 // If sanitizer is enabled, disable OPT_ffine_grained_bitfield_accesses.
2838 if (Res.getCodeGenOpts().FineGrainedBitfieldAccesses &&
2839 !Res.getLangOpts()->Sanitize.empty()) {
2840 Res.getCodeGenOpts().FineGrainedBitfieldAccesses = false;
2841 Diags.Report(diag::warn_drv_fine_grained_bitfield_accesses_ignored);
2846 std::string CompilerInvocation::getModuleHash() const {
2847 // Note: For QoI reasons, the things we use as a hash here should all be
2848 // dumped via the -module-info flag.
2849 using llvm::hash_code;
2850 using llvm::hash_value;
2851 using llvm::hash_combine;
2853 // Start the signature with the compiler version.
2854 // FIXME: We'd rather use something more cryptographically sound than
2855 // CityHash, but this will do for now.
2856 hash_code code = hash_value(getClangFullRepositoryVersion());
2858 // Extend the signature with the language options
2859 #define LANGOPT(Name, Bits, Default, Description) \
2860 code = hash_combine(code, LangOpts->Name);
2861 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2862 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
2863 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
2864 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
2865 #include "clang/Basic/LangOptions.def"
2867 for (StringRef Feature : LangOpts->ModuleFeatures)
2868 code = hash_combine(code, Feature);
2870 // Extend the signature with the target options.
2871 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
2873 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
2874 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
2876 // Extend the signature with preprocessor options.
2877 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
2878 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
2879 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
2881 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator
2882 I = getPreprocessorOpts().Macros.begin(),
2883 IEnd = getPreprocessorOpts().Macros.end();
2885 // If we're supposed to ignore this macro for the purposes of modules,
2886 // don't put it into the hash.
2887 if (!hsOpts.ModulesIgnoreMacros.empty()) {
2888 // Check whether we're ignoring this macro.
2889 StringRef MacroDef = I->first;
2890 if (hsOpts.ModulesIgnoreMacros.count(
2891 llvm::CachedHashString(MacroDef.split('=').first)))
2895 code = hash_combine(code, I->first, I->second);
2898 // Extend the signature with the sysroot and other header search options.
2899 code = hash_combine(code, hsOpts.Sysroot,
2900 hsOpts.ModuleFormat,
2901 hsOpts.UseDebugInfo,
2902 hsOpts.UseBuiltinIncludes,
2903 hsOpts.UseStandardSystemIncludes,
2904 hsOpts.UseStandardCXXIncludes,
2906 hsOpts.ModulesValidateDiagnosticOptions);
2907 code = hash_combine(code, hsOpts.ResourceDir);
2909 // Extend the signature with the user build path.
2910 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
2912 // Extend the signature with the module file extensions.
2913 const FrontendOptions &frontendOpts = getFrontendOpts();
2914 for (const auto &ext : frontendOpts.ModuleFileExtensions) {
2915 code = ext->hashExtension(code);
2918 // Extend the signature with the enabled sanitizers, if at least one is
2919 // enabled. Sanitizers which cannot affect AST generation aren't hashed.
2920 SanitizerSet SanHash = LangOpts->Sanitize;
2921 SanHash.clear(getPPTransparentSanitizers());
2922 if (!SanHash.empty())
2923 code = hash_combine(code, SanHash.Mask);
2925 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
2930 template<typename IntTy>
2931 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
2933 DiagnosticsEngine *Diags) {
2934 IntTy Res = Default;
2935 if (Arg *A = Args.getLastArg(Id)) {
2936 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
2938 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
2946 // Declared in clang/Frontend/Utils.h.
2947 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
2948 DiagnosticsEngine *Diags) {
2949 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
2952 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
2954 DiagnosticsEngine *Diags) {
2955 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
2958 void BuryPointer(const void *Ptr) {
2959 // This function may be called only a small fixed amount of times per each
2960 // invocation, otherwise we do actually have a leak which we want to report.
2961 // If this function is called more than kGraveYardMaxSize times, the pointers
2962 // will not be properly buried and a leak detector will report a leak, which
2963 // is what we want in such case.
2964 static const size_t kGraveYardMaxSize = 16;
2965 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2966 static std::atomic<unsigned> GraveYardSize;
2967 unsigned Idx = GraveYardSize++;
2968 if (Idx >= kGraveYardMaxSize)
2970 GraveYard[Idx] = Ptr;
2973 IntrusiveRefCntPtr<vfs::FileSystem>
2974 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2975 DiagnosticsEngine &Diags) {
2976 return createVFSFromCompilerInvocation(CI, Diags, vfs::getRealFileSystem());
2979 IntrusiveRefCntPtr<vfs::FileSystem>
2980 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2981 DiagnosticsEngine &Diags,
2982 IntrusiveRefCntPtr<vfs::FileSystem> BaseFS) {
2983 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2986 IntrusiveRefCntPtr<vfs::OverlayFileSystem> Overlay(
2987 new vfs::OverlayFileSystem(BaseFS));
2988 // earlier vfs files are on the bottom
2989 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2990 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2991 BaseFS->getBufferForFile(File);
2993 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2994 return IntrusiveRefCntPtr<vfs::FileSystem>();
2997 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML(
2998 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File);
3000 Diags.Report(diag::err_invalid_vfs_overlay) << File;
3001 return IntrusiveRefCntPtr<vfs::FileSystem>();
3003 Overlay->pushOverlay(FS);
3007 } // end namespace clang