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 "TestModuleFileExtension.h"
11 #include "clang/Basic/Builtins.h"
12 #include "clang/Basic/FileManager.h"
13 #include "clang/Basic/Version.h"
14 #include "clang/Config/config.h"
15 #include "clang/Driver/DriverDiagnostic.h"
16 #include "clang/Driver/Options.h"
17 #include "clang/Driver/Util.h"
18 #include "clang/Frontend/CompilerInvocation.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/Serialization/ASTReader.h"
24 #include "clang/Serialization/ModuleFileExtension.h"
25 #include "llvm/ADT/Hashing.h"
26 #include "llvm/ADT/STLExtras.h"
27 #include "llvm/ADT/SmallVector.h"
28 #include "llvm/ADT/StringExtras.h"
29 #include "llvm/ADT/StringSwitch.h"
30 #include "llvm/ADT/Triple.h"
31 #include "llvm/Linker/Linker.h"
32 #include "llvm/Option/Arg.h"
33 #include "llvm/Option/ArgList.h"
34 #include "llvm/Option/OptTable.h"
35 #include "llvm/Option/Option.h"
36 #include "llvm/ProfileData/InstrProfReader.h"
37 #include "llvm/Support/CodeGen.h"
38 #include "llvm/Support/ErrorHandling.h"
39 #include "llvm/Support/FileSystem.h"
40 #include "llvm/Support/Host.h"
41 #include "llvm/Support/Path.h"
42 #include "llvm/Support/Process.h"
43 #include "llvm/Target/TargetOptions.h"
47 #include <system_error>
48 using namespace clang;
50 //===----------------------------------------------------------------------===//
52 //===----------------------------------------------------------------------===//
54 CompilerInvocationBase::CompilerInvocationBase()
55 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
56 DiagnosticOpts(new DiagnosticOptions()),
57 HeaderSearchOpts(new HeaderSearchOptions()),
58 PreprocessorOpts(new PreprocessorOptions()) {}
60 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
61 : RefCountedBase<CompilerInvocation>(),
62 LangOpts(new LangOptions(*X.getLangOpts())),
63 TargetOpts(new TargetOptions(X.getTargetOpts())),
64 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
65 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
66 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
68 CompilerInvocationBase::~CompilerInvocationBase() {}
70 //===----------------------------------------------------------------------===//
71 // Deserialization (from args)
72 //===----------------------------------------------------------------------===//
74 using namespace clang::driver;
75 using namespace clang::driver::options;
76 using namespace llvm::opt;
80 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
81 DiagnosticsEngine &Diags) {
82 unsigned DefaultOpt = 0;
83 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
86 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
87 if (A->getOption().matches(options::OPT_O0))
90 if (A->getOption().matches(options::OPT_Ofast))
93 assert (A->getOption().matches(options::OPT_O));
95 StringRef S(A->getValue());
96 if (S == "s" || S == "z" || S.empty())
99 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
105 static unsigned getOptimizationLevelSize(ArgList &Args) {
106 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
107 if (A->getOption().matches(options::OPT_O)) {
108 switch (A->getValue()[0]) {
121 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
122 OptSpecifier GroupWithValue,
123 std::vector<std::string> &Diagnostics) {
124 for (Arg *A : Args.filtered(Group)) {
125 if (A->getOption().getKind() == Option::FlagClass) {
126 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
127 // its name (minus the "W" or "R" at the beginning) to the warning list.
128 Diagnostics.push_back(A->getOption().getName().drop_front(1));
129 } else if (A->getOption().matches(GroupWithValue)) {
130 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group.
131 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-"));
133 // Otherwise, add its value (for OPT_W_Joined and similar).
134 for (const char *Arg : A->getValues())
135 Diagnostics.emplace_back(Arg);
140 static void getAllNoBuiltinFuncValues(ArgList &Args,
141 std::vector<std::string> &Funcs) {
142 SmallVector<const char *, 8> Values;
143 for (const auto &Arg : Args) {
144 const Option &O = Arg->getOption();
145 if (O.matches(options::OPT_fno_builtin_)) {
146 const char *FuncName = Arg->getValue();
147 if (Builtin::Context::isBuiltinFunc(FuncName))
148 Values.push_back(FuncName);
151 Funcs.insert(Funcs.end(), Values.begin(), Values.end());
154 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
155 DiagnosticsEngine &Diags) {
156 using namespace options;
158 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
159 StringRef Name = A->getValue();
160 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
161 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
162 .Case(CMDFLAG, NAME##Model)
163 #include "clang/StaticAnalyzer/Core/Analyses.def"
165 if (Value == NumStores) {
166 Diags.Report(diag::err_drv_invalid_value)
167 << A->getAsString(Args) << Name;
170 Opts.AnalysisStoreOpt = Value;
174 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
175 StringRef Name = A->getValue();
176 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
177 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
178 .Case(CMDFLAG, NAME##Model)
179 #include "clang/StaticAnalyzer/Core/Analyses.def"
180 .Default(NumConstraints);
181 if (Value == NumConstraints) {
182 Diags.Report(diag::err_drv_invalid_value)
183 << A->getAsString(Args) << Name;
186 Opts.AnalysisConstraintsOpt = Value;
190 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
191 StringRef Name = A->getValue();
192 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
193 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
194 .Case(CMDFLAG, PD_##NAME)
195 #include "clang/StaticAnalyzer/Core/Analyses.def"
196 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
197 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
198 Diags.Report(diag::err_drv_invalid_value)
199 << A->getAsString(Args) << Name;
202 Opts.AnalysisDiagOpt = Value;
206 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
207 StringRef Name = A->getValue();
208 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
209 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
211 #include "clang/StaticAnalyzer/Core/Analyses.def"
212 .Default(NumPurgeModes);
213 if (Value == NumPurgeModes) {
214 Diags.Report(diag::err_drv_invalid_value)
215 << A->getAsString(Args) << Name;
218 Opts.AnalysisPurgeOpt = Value;
222 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
223 StringRef Name = A->getValue();
224 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
225 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
227 #include "clang/StaticAnalyzer/Core/Analyses.def"
228 .Default(NumInliningModes);
229 if (Value == NumInliningModes) {
230 Diags.Report(diag::err_drv_invalid_value)
231 << A->getAsString(Args) << Name;
234 Opts.InliningMode = Value;
238 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
239 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks);
241 Opts.visualizeExplodedGraphWithGraphViz =
242 Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
243 Opts.visualizeExplodedGraphWithUbiGraph =
244 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
245 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
246 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
247 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
248 Opts.AnalyzeNestedBlocks =
249 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
250 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume);
251 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
252 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
253 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
254 Opts.maxBlockVisitOnPath =
255 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags);
256 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
257 Opts.InlineMaxStackDepth =
258 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth,
259 Opts.InlineMaxStackDepth, Diags);
261 Opts.CheckersControlList.clear();
263 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) {
265 bool enable = (A->getOption().getID() == OPT_analyzer_checker);
266 // We can have a list of comma separated checker names, e.g:
267 // '-analyzer-checker=cocoa,unix'
268 StringRef checkerList = A->getValue();
269 SmallVector<StringRef, 4> checkers;
270 checkerList.split(checkers, ",");
271 for (StringRef checker : checkers)
272 Opts.CheckersControlList.emplace_back(checker, enable);
275 // Go through the analyzer configuration options.
276 for (const Arg *A : Args.filtered(OPT_analyzer_config)) {
278 // We can have a list of comma separated config names, e.g:
279 // '-analyzer-config key1=val1,key2=val2'
280 StringRef configList = A->getValue();
281 SmallVector<StringRef, 4> configVals;
282 configList.split(configVals, ",");
283 for (unsigned i = 0, e = configVals.size(); i != e; ++i) {
285 std::tie(key, val) = configVals[i].split("=");
287 Diags.Report(SourceLocation(),
288 diag::err_analyzer_config_no_value) << configVals[i];
292 if (val.find('=') != StringRef::npos) {
293 Diags.Report(SourceLocation(),
294 diag::err_analyzer_config_multiple_values)
299 Opts.Config[key] = val;
306 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
307 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
308 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
312 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
313 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
314 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments);
317 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) {
318 if (Arg *A = Args.getLastArg(OPT_mcode_model)) {
319 StringRef Value = A->getValue();
320 if (Value == "small" || Value == "kernel" || Value == "medium" ||
323 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
328 /// \brief Create a new Regex instance out of the string value in \p RpassArg.
329 /// It returns a pointer to the newly generated Regex instance.
330 static std::shared_ptr<llvm::Regex>
331 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args,
333 StringRef Val = RpassArg->getValue();
334 std::string RegexError;
335 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
336 if (!Pattern->isValid(RegexError)) {
337 Diags.Report(diag::err_drv_optimization_remark_pattern)
338 << RegexError << RpassArg->getAsString(Args);
344 static bool parseDiagnosticLevelMask(StringRef FlagName,
345 const std::vector<std::string> &Levels,
346 DiagnosticsEngine *Diags,
347 DiagnosticLevelMask &M) {
349 for (const auto &Level : Levels) {
350 DiagnosticLevelMask const PM =
351 llvm::StringSwitch<DiagnosticLevelMask>(Level)
352 .Case("note", DiagnosticLevelMask::Note)
353 .Case("remark", DiagnosticLevelMask::Remark)
354 .Case("warning", DiagnosticLevelMask::Warning)
355 .Case("error", DiagnosticLevelMask::Error)
356 .Default(DiagnosticLevelMask::None);
357 if (PM == DiagnosticLevelMask::None) {
360 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level;
367 static void parseSanitizerKinds(StringRef FlagName,
368 const std::vector<std::string> &Sanitizers,
369 DiagnosticsEngine &Diags, SanitizerSet &S) {
370 for (const auto &Sanitizer : Sanitizers) {
371 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false);
373 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
379 // Set the profile kind for fprofile-instrument.
380 static void setPGOInstrumentor(CodeGenOptions &Opts, ArgList &Args,
381 DiagnosticsEngine &Diags) {
382 Arg *A = Args.getLastArg(OPT_fprofile_instrument_EQ);
385 StringRef S = A->getValue();
386 unsigned I = llvm::StringSwitch<unsigned>(S)
387 .Case("none", CodeGenOptions::ProfileNone)
388 .Case("clang", CodeGenOptions::ProfileClangInstr)
389 .Case("llvm", CodeGenOptions::ProfileIRInstr)
392 Diags.Report(diag::err_drv_invalid_pgo_instrumentor) << A->getAsString(Args)
396 CodeGenOptions::ProfileInstrKind Instrumentor =
397 static_cast<CodeGenOptions::ProfileInstrKind>(I);
398 Opts.setProfileInstr(Instrumentor);
401 // Set the profile kind using fprofile-instrument-use-path.
402 static void setPGOUseInstrumentor(CodeGenOptions &Opts,
403 const std::string ProfileName) {
404 auto ReaderOrErr = llvm::IndexedInstrProfReader::create(ProfileName);
405 // In error, return silently and let Clang PGOUse report the error message.
406 if (ReaderOrErr.getError()) {
407 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
410 std::unique_ptr<llvm::IndexedInstrProfReader> PGOReader =
411 std::move(ReaderOrErr.get());
412 if (PGOReader->isIRLevelProfile())
413 Opts.setProfileUse(CodeGenOptions::ProfileIRInstr);
415 Opts.setProfileUse(CodeGenOptions::ProfileClangInstr);
418 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
419 DiagnosticsEngine &Diags,
420 const TargetOptions &TargetOpts) {
421 using namespace options;
423 llvm::Triple Triple = llvm::Triple(TargetOpts.Triple);
425 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
426 // TODO: This could be done in Driver
427 unsigned MaxOptLevel = 3;
428 if (OptimizationLevel > MaxOptLevel) {
429 // If the optimization level is not supported, fall back on the default
431 Diags.Report(diag::warn_drv_optimization_value)
432 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
433 OptimizationLevel = MaxOptLevel;
435 Opts.OptimizationLevel = OptimizationLevel;
437 // We must always run at least the always inlining pass.
439 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
440 : CodeGenOptions::OnlyAlwaysInlining);
441 // -fno-inline-functions overrides OptimizationLevel > 1.
442 Opts.NoInline = Args.hasArg(OPT_fno_inline);
443 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ?
444 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining());
446 if (Arg *A = Args.getLastArg(OPT_fveclib)) {
447 StringRef Name = A->getValue();
448 if (Name == "Accelerate")
449 Opts.setVecLib(CodeGenOptions::Accelerate);
450 else if (Name == "none")
451 Opts.setVecLib(CodeGenOptions::NoLibrary);
453 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
456 if (Arg *A = Args.getLastArg(OPT_debug_info_kind_EQ)) {
458 llvm::StringSwitch<unsigned>(A->getValue())
459 .Case("line-tables-only", codegenoptions::DebugLineTablesOnly)
460 .Case("limited", codegenoptions::LimitedDebugInfo)
461 .Case("standalone", codegenoptions::FullDebugInfo)
464 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
467 Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val));
469 if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) {
470 unsigned Val = llvm::StringSwitch<unsigned>(A->getValue())
471 .Case("gdb", unsigned(llvm::DebuggerKind::GDB))
472 .Case("lldb", unsigned(llvm::DebuggerKind::LLDB))
473 .Case("sce", unsigned(llvm::DebuggerKind::SCE))
476 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
479 Opts.setDebuggerTuning(static_cast<llvm::DebuggerKind>(Val));
481 Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags);
482 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
483 Opts.EmitCodeView = Args.hasArg(OPT_gcodeview);
484 Opts.WholeProgramVTables = Args.hasArg(OPT_fwhole_program_vtables);
485 Opts.LTOVisibilityPublicStd = Args.hasArg(OPT_flto_visibility_public_std);
486 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
487 Opts.DebugTypeExtRefs = Args.hasArg(OPT_dwarf_ext_refs);
488 Opts.DebugExplicitImport = Triple.isPS4CPU();
490 for (const auto &Arg : Args.getAllArgValues(OPT_fdebug_prefix_map_EQ))
491 Opts.DebugPrefixMap.insert(StringRef(Arg).split('='));
494 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists))
495 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists;
497 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
498 Opts.DisableLLVMPasses = Args.hasArg(OPT_disable_llvm_passes);
499 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
500 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
501 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
502 OPT_fuse_register_sized_bitfield_access);
503 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
504 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
505 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
506 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
507 Opts.NoCommon = Args.hasArg(OPT_fno_common);
508 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
509 Opts.OptimizeSize = getOptimizationLevelSize(Args);
510 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
511 Args.hasArg(OPT_ffreestanding));
512 if (Opts.SimplifyLibCalls)
513 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
515 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
516 (Opts.OptimizationLevel > 1));
517 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
519 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
520 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
521 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
523 setPGOInstrumentor(Opts, Args, Diags);
524 Opts.InstrProfileOutput =
525 Args.getLastArgValue(OPT_fprofile_instrument_path_EQ);
526 Opts.ProfileInstrumentUsePath =
527 Args.getLastArgValue(OPT_fprofile_instrument_use_path_EQ);
528 if (!Opts.ProfileInstrumentUsePath.empty())
529 setPGOUseInstrumentor(Opts, Opts.ProfileInstrumentUsePath);
531 Opts.CoverageMapping =
532 Args.hasFlag(OPT_fcoverage_mapping, OPT_fno_coverage_mapping, false);
533 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
534 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
535 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
536 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
537 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
538 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
539 Opts.CodeModel = getCodeModel(Args, Diags);
540 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
542 (Args.hasArg(OPT_mdisable_fp_elim) || Args.hasArg(OPT_pg));
543 Opts.DisableFree = Args.hasArg(OPT_disable_free);
544 Opts.DiscardValueNames = Args.hasArg(OPT_discard_value_names);
545 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
546 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
547 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
548 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
549 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
550 Args.hasArg(OPT_cl_finite_math_only) ||
551 Args.hasArg(OPT_cl_fast_relaxed_math));
552 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
553 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
554 Args.hasArg(OPT_cl_finite_math_only) ||
555 Args.hasArg(OPT_cl_fast_relaxed_math));
556 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros);
557 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math);
558 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
559 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
560 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
561 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
562 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
563 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
564 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
565 Opts.IncrementalLinkerCompatible =
566 Args.hasArg(OPT_mincremental_linker_compatible);
567 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
568 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
569 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
570 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
571 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
572 Opts.StrictVTablePointers = Args.hasArg(OPT_fstrict_vtable_pointers);
573 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
574 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
575 Args.hasArg(OPT_cl_fast_relaxed_math);
576 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
577 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
578 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
579 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
580 Diags.Report(diag::err_drv_invalid_value)
581 << Args.getLastArg(OPT_mthread_model)->getAsString(Args)
583 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
584 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
586 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
587 OPT_fno_function_sections, false);
588 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
589 OPT_fno_data_sections, false);
590 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names,
591 OPT_fno_unique_section_names, true);
593 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
595 Opts.NoUseJumpTables = Args.hasArg(OPT_fno_jump_tables);
597 Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ);
598 const Arg *A = Args.getLastArg(OPT_flto, OPT_flto_EQ);
599 Opts.EmitSummaryIndex = A && A->containsValue("thin");
600 if (Arg *A = Args.getLastArg(OPT_fthinlto_index_EQ)) {
601 if (IK != IK_LLVM_IR)
602 Diags.Report(diag::err_drv_argument_only_allowed_with)
603 << A->getAsString(Args) << "-x ir";
604 Opts.ThinLTOIndexFile = Args.getLastArgValue(OPT_fthinlto_index_EQ);
607 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile);
609 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
610 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
611 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
613 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
614 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
616 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
617 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
618 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
619 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
620 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
621 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
622 Opts.CoverageNoFunctionNamesInData =
623 Args.hasArg(OPT_coverage_no_function_names_in_data);
624 Opts.CoverageExitBlockBeforeBody =
625 Args.hasArg(OPT_coverage_exit_block_before_body);
626 if (Args.hasArg(OPT_coverage_version_EQ)) {
627 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
628 if (CoverageVersion.size() != 4) {
629 Diags.Report(diag::err_drv_invalid_value)
630 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
633 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
638 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
639 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
640 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
641 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
642 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
643 for (auto A : Args.filtered(OPT_mlink_bitcode_file, OPT_mlink_cuda_bitcode)) {
644 unsigned LinkFlags = llvm::Linker::Flags::None;
645 if (A->getOption().matches(OPT_mlink_cuda_bitcode))
646 LinkFlags = llvm::Linker::Flags::LinkOnlyNeeded |
647 llvm::Linker::Flags::InternalizeLinkedSymbols;
648 Opts.LinkBitcodeFiles.push_back(std::make_pair(LinkFlags, A->getValue()));
650 Opts.SanitizeCoverageType =
651 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags);
652 Opts.SanitizeCoverageIndirectCalls =
653 Args.hasArg(OPT_fsanitize_coverage_indirect_calls);
654 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb);
655 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp);
656 Opts.SanitizeCoverage8bitCounters =
657 Args.hasArg(OPT_fsanitize_coverage_8bit_counters);
658 Opts.SanitizeCoverageTracePC = Args.hasArg(OPT_fsanitize_coverage_trace_pc);
659 Opts.SanitizeMemoryTrackOrigins =
660 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
661 Opts.SanitizeMemoryUseAfterDtor =
662 Args.hasArg(OPT_fsanitize_memory_use_after_dtor);
663 Opts.SanitizeCfiCrossDso = Args.hasArg(OPT_fsanitize_cfi_cross_dso);
664 Opts.SanitizeStats = Args.hasArg(OPT_fsanitize_stats);
666 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
667 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
668 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
669 StringRef Val = A->getValue();
670 unsigned StackAlignment = Opts.StackAlignment;
671 Val.getAsInteger(10, StackAlignment);
672 Opts.StackAlignment = StackAlignment;
675 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) {
676 StringRef Val = A->getValue();
677 unsigned StackProbeSize = Opts.StackProbeSize;
678 Val.getAsInteger(0, StackProbeSize);
679 Opts.StackProbeSize = StackProbeSize;
682 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
683 StringRef Name = A->getValue();
684 unsigned Method = llvm::StringSwitch<unsigned>(Name)
685 .Case("legacy", CodeGenOptions::Legacy)
686 .Case("non-legacy", CodeGenOptions::NonLegacy)
687 .Case("mixed", CodeGenOptions::Mixed)
690 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
693 Opts.setObjCDispatchMethod(
694 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
699 Args.hasFlag(OPT_femulated_tls, OPT_fno_emulated_tls, false);
701 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
702 StringRef Name = A->getValue();
703 unsigned Model = llvm::StringSwitch<unsigned>(Name)
704 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
705 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
706 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
707 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
710 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
713 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
717 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
718 StringRef Val = A->getValue();
720 Opts.setFPContractMode(CodeGenOptions::FPC_Fast);
721 else if (Val == "on")
722 Opts.setFPContractMode(CodeGenOptions::FPC_On);
723 else if (Val == "off")
724 Opts.setFPContractMode(CodeGenOptions::FPC_Off);
726 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
729 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
730 if (A->getOption().matches(OPT_fpcc_struct_return)) {
731 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
733 assert(A->getOption().matches(OPT_freg_struct_return));
734 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
738 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
739 Opts.LinkerOptions = Args.getAllArgValues(OPT_linker_option);
740 bool NeedLocTracking = false;
742 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
743 Opts.OptimizationRemarkPattern =
744 GenerateOptimizationRemarkRegex(Diags, Args, A);
745 NeedLocTracking = true;
748 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
749 Opts.OptimizationRemarkMissedPattern =
750 GenerateOptimizationRemarkRegex(Diags, Args, A);
751 NeedLocTracking = true;
754 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
755 Opts.OptimizationRemarkAnalysisPattern =
756 GenerateOptimizationRemarkRegex(Diags, Args, A);
757 NeedLocTracking = true;
760 // If the user requested to use a sample profile for PGO, then the
761 // backend will need to track source location information so the profile
762 // can be incorporated into the IR.
763 if (!Opts.SampleProfileFile.empty())
764 NeedLocTracking = true;
766 // If the user requested a flag that requires source locations available in
767 // the backend, make sure that the backend tracks source location information.
768 if (NeedLocTracking && Opts.getDebugInfo() == codegenoptions::NoDebugInfo)
769 Opts.setDebugInfo(codegenoptions::LocTrackingOnly);
771 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
773 // Parse -fsanitize-recover= arguments.
774 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
775 parseSanitizerKinds("-fsanitize-recover=",
776 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
777 Opts.SanitizeRecover);
778 parseSanitizerKinds("-fsanitize-trap=",
779 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags,
782 Opts.CudaGpuBinaryFileNames =
783 Args.getAllArgValues(OPT_fcuda_include_gpubinary);
785 Opts.Backchain = Args.hasArg(OPT_mbackchain);
790 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
792 using namespace options;
793 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
794 Opts.Targets = Args.getAllArgValues(OPT_MT);
795 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
796 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
797 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
798 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
799 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
800 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
801 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
802 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
803 Opts.ModuleDependencyOutputDir =
804 Args.getLastArgValue(OPT_module_dependency_dir);
805 if (Args.hasArg(OPT_MV))
806 Opts.OutputFormat = DependencyOutputFormat::NMake;
807 // Add sanitizer blacklists as extra dependencies.
808 // They won't be discovered by the regular preprocessor, so
809 // we let make / ninja to know about this implicit dependency.
810 Opts.ExtraDeps = Args.getAllArgValues(OPT_fdepfile_entry);
811 auto ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
812 Opts.ExtraDeps.insert(Opts.ExtraDeps.end(), ModuleFiles.begin(),
816 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
817 DiagnosticsEngine *Diags) {
818 using namespace options;
821 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
823 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
824 Opts.DiagnosticSerializationFile = A->getValue();
825 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
826 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
827 Opts.Pedantic = Args.hasArg(OPT_pedantic);
828 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
829 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
830 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
831 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
834 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
835 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
836 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
838 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
840 // Default behavior is to not to show note include stacks.
841 Opts.ShowNoteIncludeStack = false;
842 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
843 OPT_fno_diagnostics_show_note_include_stack))
844 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
845 Opts.ShowNoteIncludeStack = true;
847 StringRef ShowOverloads =
848 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
849 if (ShowOverloads == "best")
850 Opts.setShowOverloads(Ovl_Best);
851 else if (ShowOverloads == "all")
852 Opts.setShowOverloads(Ovl_All);
856 Diags->Report(diag::err_drv_invalid_value)
857 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
861 StringRef ShowCategory =
862 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
863 if (ShowCategory == "none")
864 Opts.ShowCategories = 0;
865 else if (ShowCategory == "id")
866 Opts.ShowCategories = 1;
867 else if (ShowCategory == "name")
868 Opts.ShowCategories = 2;
872 Diags->Report(diag::err_drv_invalid_value)
873 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
878 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
879 if (Format == "clang")
880 Opts.setFormat(DiagnosticOptions::Clang);
881 else if (Format == "msvc")
882 Opts.setFormat(DiagnosticOptions::MSVC);
883 else if (Format == "msvc-fallback") {
884 Opts.setFormat(DiagnosticOptions::MSVC);
885 Opts.CLFallbackMode = true;
886 } else if (Format == "vi")
887 Opts.setFormat(DiagnosticOptions::Vi);
891 Diags->Report(diag::err_drv_invalid_value)
892 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
896 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
897 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
898 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
899 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
900 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None;
901 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=",
902 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ),
904 if (Args.hasArg(OPT_verify_ignore_unexpected))
905 DiagMask = DiagnosticLevelMask::All;
906 Opts.setVerifyIgnoreUnexpected(DiagMask);
907 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
908 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
909 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
910 Opts.MacroBacktraceLimit =
911 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
912 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
913 Opts.TemplateBacktraceLimit = getLastArgIntValue(
914 Args, OPT_ftemplate_backtrace_limit,
915 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
916 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
917 Args, OPT_fconstexpr_backtrace_limit,
918 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
919 Opts.SpellCheckingLimit = getLastArgIntValue(
920 Args, OPT_fspell_checking_limit,
921 DiagnosticOptions::DefaultSpellCheckingLimit, Diags);
922 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
923 DiagnosticOptions::DefaultTabStop, Diags);
924 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
925 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
927 Diags->Report(diag::warn_ignoring_ftabstop_value)
928 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
930 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
931 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
932 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
937 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
938 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
941 /// Parse the argument to the -ftest-module-file-extension
942 /// command-line argument.
944 /// \returns true on error, false on success.
945 static bool parseTestModuleFileExtensionArg(StringRef Arg,
946 std::string &BlockName,
947 unsigned &MajorVersion,
948 unsigned &MinorVersion,
950 std::string &UserInfo) {
951 SmallVector<StringRef, 5> Args;
952 Arg.split(Args, ':', 5);
957 if (Args[1].getAsInteger(10, MajorVersion)) return true;
958 if (Args[2].getAsInteger(10, MinorVersion)) return true;
959 if (Args[3].getAsInteger(2, Hashed)) return true;
965 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
966 DiagnosticsEngine &Diags) {
967 using namespace options;
968 Opts.ProgramAction = frontend::ParseSyntaxOnly;
969 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
970 switch (A->getOption().getID()) {
972 llvm_unreachable("Invalid option in group!");
974 Opts.ProgramAction = frontend::ASTDeclList; break;
976 case OPT_ast_dump_lookups:
977 Opts.ProgramAction = frontend::ASTDump; break;
979 Opts.ProgramAction = frontend::ASTPrint; break;
981 Opts.ProgramAction = frontend::ASTView; break;
982 case OPT_dump_raw_tokens:
983 Opts.ProgramAction = frontend::DumpRawTokens; break;
984 case OPT_dump_tokens:
985 Opts.ProgramAction = frontend::DumpTokens; break;
987 Opts.ProgramAction = frontend::EmitAssembly; break;
988 case OPT_emit_llvm_bc:
989 Opts.ProgramAction = frontend::EmitBC; break;
991 Opts.ProgramAction = frontend::EmitHTML; break;
993 Opts.ProgramAction = frontend::EmitLLVM; break;
994 case OPT_emit_llvm_only:
995 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
996 case OPT_emit_codegen_only:
997 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
999 Opts.ProgramAction = frontend::EmitObj; break;
1001 Opts.FixItSuffix = A->getValue();
1004 Opts.ProgramAction = frontend::FixIt; break;
1005 case OPT_emit_module:
1006 Opts.ProgramAction = frontend::GenerateModule; break;
1008 Opts.ProgramAction = frontend::GeneratePCH; break;
1010 Opts.ProgramAction = frontend::GeneratePTH; break;
1012 Opts.ProgramAction = frontend::InitOnly; break;
1013 case OPT_fsyntax_only:
1014 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1015 case OPT_module_file_info:
1016 Opts.ProgramAction = frontend::ModuleFileInfo; break;
1017 case OPT_verify_pch:
1018 Opts.ProgramAction = frontend::VerifyPCH; break;
1019 case OPT_print_decl_contexts:
1020 Opts.ProgramAction = frontend::PrintDeclContext; break;
1021 case OPT_print_preamble:
1022 Opts.ProgramAction = frontend::PrintPreamble; break;
1024 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1025 case OPT_rewrite_macros:
1026 Opts.ProgramAction = frontend::RewriteMacros; break;
1027 case OPT_rewrite_objc:
1028 Opts.ProgramAction = frontend::RewriteObjC; break;
1029 case OPT_rewrite_test:
1030 Opts.ProgramAction = frontend::RewriteTest; break;
1032 Opts.ProgramAction = frontend::RunAnalysis; break;
1034 Opts.ProgramAction = frontend::MigrateSource; break;
1036 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1040 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1041 Opts.Plugins.emplace_back(A->getValue(0));
1042 Opts.ProgramAction = frontend::PluginAction;
1043 Opts.ActionName = A->getValue();
1045 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1046 for (const Arg *AA : Args.filtered(OPT_plugin_arg))
1047 Opts.PluginArgs[AA->getValue(0)].emplace_back(AA->getValue(1));
1049 for (const std::string &Arg :
1050 Args.getAllArgValues(OPT_ftest_module_file_extension_EQ)) {
1051 std::string BlockName;
1052 unsigned MajorVersion;
1053 unsigned MinorVersion;
1055 std::string UserInfo;
1056 if (parseTestModuleFileExtensionArg(Arg, BlockName, MajorVersion,
1057 MinorVersion, Hashed, UserInfo)) {
1058 Diags.Report(diag::err_test_module_file_extension_format) << Arg;
1063 // Add the testing module file extension.
1064 Opts.ModuleFileExtensions.push_back(
1065 new TestModuleFileExtension(BlockName, MajorVersion, MinorVersion,
1069 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1070 Opts.CodeCompletionAt =
1071 ParsedSourceLocation::FromString(A->getValue());
1072 if (Opts.CodeCompletionAt.FileName.empty())
1073 Diags.Report(diag::err_drv_invalid_value)
1074 << A->getAsString(Args) << A->getValue();
1076 Opts.DisableFree = Args.hasArg(OPT_disable_free);
1078 Opts.OutputFile = Args.getLastArgValue(OPT_o);
1079 Opts.Plugins = Args.getAllArgValues(OPT_load);
1080 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1081 Opts.ShowHelp = Args.hasArg(OPT_help);
1082 Opts.ShowStats = Args.hasArg(OPT_print_stats);
1083 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1084 Opts.ShowVersion = Args.hasArg(OPT_version);
1085 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1086 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1087 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1088 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
1089 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
1090 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
1091 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
1092 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
1093 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
1094 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
1095 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
1096 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
1097 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
1098 Opts.ModulesEmbedFiles = Args.getAllArgValues(OPT_fmodules_embed_file_EQ);
1099 Opts.ModulesEmbedAllFiles = Args.hasArg(OPT_fmodules_embed_all_files);
1101 Opts.CodeCompleteOpts.IncludeMacros
1102 = Args.hasArg(OPT_code_completion_macros);
1103 Opts.CodeCompleteOpts.IncludeCodePatterns
1104 = Args.hasArg(OPT_code_completion_patterns);
1105 Opts.CodeCompleteOpts.IncludeGlobals
1106 = !Args.hasArg(OPT_no_code_completion_globals);
1107 Opts.CodeCompleteOpts.IncludeBriefComments
1108 = Args.hasArg(OPT_code_completion_brief_comments);
1110 Opts.OverrideRecordLayoutsFile
1111 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
1113 llvm::Triple::normalize(Args.getLastArgValue(OPT_aux_triple));
1114 Opts.FindPchSource = Args.getLastArgValue(OPT_find_pch_source_EQ);
1116 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1118 OPT_arcmt_migrate)) {
1119 switch (A->getOption().getID()) {
1121 llvm_unreachable("missed a case");
1122 case OPT_arcmt_check:
1123 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1125 case OPT_arcmt_modify:
1126 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1128 case OPT_arcmt_migrate:
1129 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1133 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
1134 Opts.ARCMTMigrateReportOut
1135 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1136 Opts.ARCMTMigrateEmitARCErrors
1137 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1139 if (Args.hasArg(OPT_objcmt_migrate_literals))
1140 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
1141 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
1142 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
1143 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
1144 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
1145 if (Args.hasArg(OPT_objcmt_migrate_property))
1146 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
1147 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
1148 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
1149 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
1150 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
1151 if (Args.hasArg(OPT_objcmt_migrate_annotation))
1152 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
1153 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
1154 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
1155 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
1156 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
1157 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
1158 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
1159 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
1160 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
1161 if (Args.hasArg(OPT_objcmt_atomic_property))
1162 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
1163 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
1164 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
1165 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
1166 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
1167 if (Args.hasArg(OPT_objcmt_migrate_all))
1168 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
1170 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
1172 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
1173 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
1174 Diags.Report(diag::err_drv_argument_not_allowed_with)
1175 << "ARC migration" << "ObjC migration";
1178 InputKind DashX = IK_None;
1179 if (const Arg *A = Args.getLastArg(OPT_x)) {
1180 DashX = llvm::StringSwitch<InputKind>(A->getValue())
1182 .Case("cl", IK_OpenCL)
1183 .Case("cuda", IK_CUDA)
1184 .Case("c++", IK_CXX)
1185 .Case("objective-c", IK_ObjC)
1186 .Case("objective-c++", IK_ObjCXX)
1187 .Case("cpp-output", IK_PreprocessedC)
1188 .Case("assembler-with-cpp", IK_Asm)
1189 .Case("c++-cpp-output", IK_PreprocessedCXX)
1190 .Case("cuda-cpp-output", IK_PreprocessedCuda)
1191 .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1192 .Case("objc-cpp-output", IK_PreprocessedObjC)
1193 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1194 .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
1195 .Case("c-header", IK_C)
1196 .Case("cl-header", IK_OpenCL)
1197 .Case("objective-c-header", IK_ObjC)
1198 .Case("c++-header", IK_CXX)
1199 .Case("objective-c++-header", IK_ObjCXX)
1200 .Cases("ast", "pcm", IK_AST)
1201 .Case("ir", IK_LLVM_IR)
1203 if (DashX == IK_None)
1204 Diags.Report(diag::err_drv_invalid_value)
1205 << A->getAsString(Args) << A->getValue();
1208 // '-' is the default input if none is given.
1209 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1210 Opts.Inputs.clear();
1212 Inputs.push_back("-");
1213 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1214 InputKind IK = DashX;
1215 if (IK == IK_None) {
1216 IK = FrontendOptions::getInputKindForExtension(
1217 StringRef(Inputs[i]).rsplit('.').second);
1218 // FIXME: Remove this hack.
1222 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK);
1228 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1230 std::string ClangExecutable =
1231 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1232 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
1234 // Compute the path to the resource directory.
1235 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
1236 SmallString<128> P(Dir);
1237 if (ClangResourceDir != "")
1238 llvm::sys::path::append(P, ClangResourceDir);
1240 llvm::sys::path::append(P, "..", Twine("lib") + CLANG_LIBDIR_SUFFIX,
1241 "clang", CLANG_VERSION_STRING);
1246 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1247 using namespace options;
1248 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1249 Opts.Verbose = Args.hasArg(OPT_v);
1250 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1251 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1252 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1253 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1254 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1255 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1256 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path);
1257 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
1258 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1259 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps);
1260 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
1261 Opts.ModuleCachePruneInterval =
1262 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
1263 Opts.ModuleCachePruneAfter =
1264 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
1265 Opts.ModulesValidateOncePerBuildSession =
1266 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
1267 Opts.BuildSessionTimestamp =
1268 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
1269 Opts.ModulesValidateSystemHeaders =
1270 Args.hasArg(OPT_fmodules_validate_system_headers);
1271 if (const Arg *A = Args.getLastArg(OPT_fmodule_format_EQ))
1272 Opts.ModuleFormat = A->getValue();
1274 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) {
1275 StringRef MacroDef = A->getValue();
1276 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first);
1279 // Add -I..., -F..., and -index-header-map options in order.
1280 bool IsIndexHeaderMap = false;
1281 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) {
1282 if (A->getOption().matches(OPT_index_header_map)) {
1283 // -index-header-map applies to the next -I or -F.
1284 IsIndexHeaderMap = true;
1288 frontend::IncludeDirGroup Group =
1289 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled;
1291 Opts.AddPath(A->getValue(), Group,
1292 /*IsFramework=*/A->getOption().matches(OPT_F), true);
1293 IsIndexHeaderMap = false;
1296 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1297 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1299 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) {
1300 if (A->getOption().matches(OPT_iprefix))
1301 Prefix = A->getValue();
1302 else if (A->getOption().matches(OPT_iwithprefix))
1303 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true);
1305 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true);
1308 for (const Arg *A : Args.filtered(OPT_idirafter))
1309 Opts.AddPath(A->getValue(), frontend::After, false, true);
1310 for (const Arg *A : Args.filtered(OPT_iquote))
1311 Opts.AddPath(A->getValue(), frontend::Quoted, false, true);
1312 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot))
1313 Opts.AddPath(A->getValue(), frontend::System, false,
1314 !A->getOption().matches(OPT_iwithsysroot));
1315 for (const Arg *A : Args.filtered(OPT_iframework))
1316 Opts.AddPath(A->getValue(), frontend::System, true, true);
1318 // Add the paths for the various language specific isystem flags.
1319 for (const Arg *A : Args.filtered(OPT_c_isystem))
1320 Opts.AddPath(A->getValue(), frontend::CSystem, false, true);
1321 for (const Arg *A : Args.filtered(OPT_cxx_isystem))
1322 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true);
1323 for (const Arg *A : Args.filtered(OPT_objc_isystem))
1324 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true);
1325 for (const Arg *A : Args.filtered(OPT_objcxx_isystem))
1326 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true);
1328 // Add the internal paths from a driver that detects standard include paths.
1330 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) {
1331 frontend::IncludeDirGroup Group = frontend::System;
1332 if (A->getOption().matches(OPT_internal_externc_isystem))
1333 Group = frontend::ExternCSystem;
1334 Opts.AddPath(A->getValue(), Group, false, true);
1337 // Add the path prefixes which are implicitly treated as being system headers.
1339 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix))
1340 Opts.AddSystemHeaderPrefix(
1341 A->getValue(), A->getOption().matches(OPT_system_header_prefix));
1343 for (const Arg *A : Args.filtered(OPT_ivfsoverlay))
1344 Opts.AddVFSOverlayFile(A->getValue());
1347 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1348 const llvm::Triple &T,
1349 LangStandard::Kind LangStd) {
1350 // Set some properties which depend solely on the input kind; it would be nice
1351 // to move these to the language standard, and have the driver resolve the
1352 // input kind + language standard.
1354 Opts.AsmPreprocessor = 1;
1355 } else if (IK == IK_ObjC ||
1357 IK == IK_PreprocessedObjC ||
1358 IK == IK_PreprocessedObjCXX) {
1359 Opts.ObjC1 = Opts.ObjC2 = 1;
1362 if (LangStd == LangStandard::lang_unspecified) {
1363 // Based on the base language, pick one.
1368 llvm_unreachable("Invalid input kind!");
1370 LangStd = LangStandard::lang_opencl;
1373 case IK_PreprocessedCuda:
1374 LangStd = LangStandard::lang_cuda;
1378 case IK_PreprocessedC:
1380 case IK_PreprocessedObjC:
1381 // The PS4 uses C99 as the default C standard.
1383 LangStd = LangStandard::lang_gnu99;
1385 LangStd = LangStandard::lang_gnu11;
1388 case IK_PreprocessedCXX:
1390 case IK_PreprocessedObjCXX:
1391 LangStd = LangStandard::lang_gnucxx98;
1396 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1397 Opts.LineComment = Std.hasLineComments();
1398 Opts.C99 = Std.isC99();
1399 Opts.C11 = Std.isC11();
1400 Opts.CPlusPlus = Std.isCPlusPlus();
1401 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1402 Opts.CPlusPlus14 = Std.isCPlusPlus14();
1403 Opts.CPlusPlus1z = Std.isCPlusPlus1z();
1404 Opts.Digraphs = Std.hasDigraphs();
1405 Opts.GNUMode = Std.isGNUMode();
1406 Opts.GNUInline = Std.isC89();
1407 Opts.HexFloats = Std.hasHexFloats();
1408 Opts.ImplicitInt = Std.hasImplicitInt();
1410 // Set OpenCL Version.
1411 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL;
1412 if (LangStd == LangStandard::lang_opencl)
1413 Opts.OpenCLVersion = 100;
1414 else if (LangStd == LangStandard::lang_opencl11)
1415 Opts.OpenCLVersion = 110;
1416 else if (LangStd == LangStandard::lang_opencl12)
1417 Opts.OpenCLVersion = 120;
1418 else if (LangStd == LangStandard::lang_opencl20)
1419 Opts.OpenCLVersion = 200;
1421 // OpenCL has some additional defaults.
1425 Opts.CXXOperatorNames = 1;
1426 Opts.LaxVectorConversions = 0;
1427 Opts.DefaultFPContract = 1;
1428 Opts.NativeHalfType = 1;
1429 Opts.NativeHalfArgsAndReturns = 1;
1432 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda ||
1433 LangStd == LangStandard::lang_cuda;
1435 // OpenCL and C++ both have bool, true, false keywords.
1436 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1438 // OpenCL has half keyword
1439 Opts.Half = Opts.OpenCL;
1441 // C++ has wchar_t keyword.
1442 Opts.WChar = Opts.CPlusPlus;
1444 Opts.GNUKeywords = Opts.GNUMode;
1445 Opts.CXXOperatorNames = Opts.CPlusPlus;
1447 Opts.DollarIdents = !Opts.AsmPreprocessor;
1450 /// Attempt to parse a visibility value out of the given argument.
1451 static Visibility parseVisibility(Arg *arg, ArgList &args,
1452 DiagnosticsEngine &diags) {
1453 StringRef value = arg->getValue();
1454 if (value == "default") {
1455 return DefaultVisibility;
1456 } else if (value == "hidden" || value == "internal") {
1457 return HiddenVisibility;
1458 } else if (value == "protected") {
1459 // FIXME: diagnose if target does not support protected visibility
1460 return ProtectedVisibility;
1463 diags.Report(diag::err_drv_invalid_value)
1464 << arg->getAsString(args) << value;
1465 return DefaultVisibility;
1468 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1469 const TargetOptions &TargetOpts,
1470 DiagnosticsEngine &Diags) {
1471 // FIXME: Cleanup per-file based stuff.
1472 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1473 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1474 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1475 #define LANGSTANDARD(id, name, desc, features) \
1476 .Case(name, LangStandard::lang_##id)
1477 #include "clang/Frontend/LangStandards.def"
1478 .Default(LangStandard::lang_unspecified);
1479 if (LangStd == LangStandard::lang_unspecified)
1480 Diags.Report(diag::err_drv_invalid_value)
1481 << A->getAsString(Args) << A->getValue();
1483 // Valid standard, check to make sure language and standard are
1485 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1489 case IK_PreprocessedC:
1490 case IK_PreprocessedObjC:
1491 if (!(Std.isC89() || Std.isC99()))
1492 Diags.Report(diag::err_drv_argument_not_allowed_with)
1493 << A->getAsString(Args) << "C/ObjC";
1497 case IK_PreprocessedCXX:
1498 case IK_PreprocessedObjCXX:
1499 if (!Std.isCPlusPlus())
1500 Diags.Report(diag::err_drv_argument_not_allowed_with)
1501 << A->getAsString(Args) << "C++/ObjC++";
1504 Diags.Report(diag::err_drv_argument_not_allowed_with)
1505 << A->getAsString(Args) << "OpenCL";
1508 case IK_PreprocessedCuda:
1509 if (!Std.isCPlusPlus())
1510 Diags.Report(diag::err_drv_argument_not_allowed_with)
1511 << A->getAsString(Args) << "CUDA";
1519 // -cl-std only applies for OpenCL language standards.
1520 // Override the -std option in this case.
1521 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1522 LangStandard::Kind OpenCLLangStd
1523 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1524 .Case("CL", LangStandard::lang_opencl)
1525 .Case("CL1.1", LangStandard::lang_opencl11)
1526 .Case("CL1.2", LangStandard::lang_opencl12)
1527 .Case("CL2.0", LangStandard::lang_opencl20)
1528 .Default(LangStandard::lang_unspecified);
1530 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1531 Diags.Report(diag::err_drv_invalid_value)
1532 << A->getAsString(Args) << A->getValue();
1535 LangStd = OpenCLLangStd;
1538 llvm::Triple T(TargetOpts.Triple);
1539 CompilerInvocation::setLangDefaults(Opts, IK, T, LangStd);
1541 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1542 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1543 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1544 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1545 // name, as it doesn't seem a useful distinction.
1546 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1549 if (Args.hasArg(OPT_fno_operator_names))
1550 Opts.CXXOperatorNames = 0;
1552 if (Args.hasArg(OPT_fcuda_is_device))
1553 Opts.CUDAIsDevice = 1;
1555 if (Args.hasArg(OPT_fcuda_allow_variadic_functions))
1556 Opts.CUDAAllowVariadicFunctions = 1;
1558 if (Args.hasArg(OPT_fno_cuda_host_device_constexpr))
1559 Opts.CUDAHostDeviceConstexpr = 0;
1561 if (Opts.CUDAIsDevice && Args.hasArg(OPT_fcuda_flush_denormals_to_zero))
1562 Opts.CUDADeviceFlushDenormalsToZero = 1;
1565 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1566 StringRef value = arg->getValue();
1567 if (Opts.ObjCRuntime.tryParse(value))
1568 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1571 if (Args.hasArg(OPT_fobjc_gc_only))
1572 Opts.setGC(LangOptions::GCOnly);
1573 else if (Args.hasArg(OPT_fobjc_gc))
1574 Opts.setGC(LangOptions::HybridGC);
1575 else if (Args.hasArg(OPT_fobjc_arc)) {
1576 Opts.ObjCAutoRefCount = 1;
1577 if (!Opts.ObjCRuntime.allowsARC())
1578 Diags.Report(diag::err_arc_unsupported_on_runtime);
1581 // ObjCWeakRuntime tracks whether the runtime supports __weak, not
1582 // whether the feature is actually enabled. This is predominantly
1583 // determined by -fobjc-runtime, but we allow it to be overridden
1584 // from the command line for testing purposes.
1585 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1586 Opts.ObjCWeakRuntime = 1;
1588 Opts.ObjCWeakRuntime = Opts.ObjCRuntime.allowsWeak();
1590 // ObjCWeak determines whether __weak is actually enabled.
1591 // Note that we allow -fno-objc-weak to disable this even in ARC mode.
1592 if (auto weakArg = Args.getLastArg(OPT_fobjc_weak, OPT_fno_objc_weak)) {
1593 if (!weakArg->getOption().matches(OPT_fobjc_weak)) {
1594 assert(!Opts.ObjCWeak);
1595 } else if (Opts.getGC() != LangOptions::NonGC) {
1596 Diags.Report(diag::err_objc_weak_with_gc);
1597 } else if (!Opts.ObjCWeakRuntime) {
1598 Diags.Report(diag::err_objc_weak_unsupported);
1602 } else if (Opts.ObjCAutoRefCount) {
1603 Opts.ObjCWeak = Opts.ObjCWeakRuntime;
1606 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1607 Opts.ObjCInferRelatedResultType = 0;
1609 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
1610 Opts.ObjCSubscriptingLegacyRuntime =
1611 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
1614 if (Args.hasArg(OPT_fgnu89_inline)) {
1616 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fgnu89-inline"
1622 if (Args.hasArg(OPT_fapple_kext)) {
1623 if (!Opts.CPlusPlus)
1624 Diags.Report(diag::warn_c_kext);
1629 if (Args.hasArg(OPT_print_ivar_layout))
1630 Opts.ObjCGCBitmapPrint = 1;
1631 if (Args.hasArg(OPT_fno_constant_cfstrings))
1632 Opts.NoConstantCFStrings = 1;
1634 if (Args.hasArg(OPT_faltivec))
1637 if (Args.hasArg(OPT_fzvector))
1640 if (Args.hasArg(OPT_pthread))
1641 Opts.POSIXThreads = 1;
1643 // The value-visibility mode defaults to "default".
1644 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
1645 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
1647 Opts.setValueVisibilityMode(DefaultVisibility);
1650 // The type-visibility mode defaults to the value-visibility mode.
1651 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
1652 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
1654 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
1657 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1658 Opts.InlineVisibilityHidden = 1;
1660 if (Args.hasArg(OPT_ftrapv)) {
1661 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1662 // Set the handler, if one is specified.
1663 Opts.OverflowHandler =
1664 Args.getLastArgValue(OPT_ftrapv_handler);
1666 else if (Args.hasArg(OPT_fwrapv))
1667 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1669 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
1670 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
1671 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
1672 Opts.MSCompatibilityVersion = 0;
1673 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) {
1675 if (VT.tryParse(A->getValue()))
1676 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
1678 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 +
1679 VT.getMinor().getValueOr(0) * 100000 +
1680 VT.getSubminor().getValueOr(0);
1683 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1684 // is specified, or -std is set to a conforming mode.
1685 // Trigraphs are disabled by default in c++1z onwards.
1686 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z;
1688 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
1690 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1691 OPT_fno_dollars_in_identifiers,
1693 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1694 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
1695 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1696 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1697 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1699 if (Args.hasArg(OPT_fno_lax_vector_conversions))
1700 Opts.LaxVectorConversions = 0;
1701 if (Args.hasArg(OPT_fno_threadsafe_statics))
1702 Opts.ThreadsafeStatics = 0;
1703 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1704 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1705 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1706 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1707 Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind);
1708 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1710 Opts.RTTI = Opts.CPlusPlus && !Args.hasArg(OPT_fno_rtti);
1711 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
1712 Opts.Blocks = Args.hasArg(OPT_fblocks);
1713 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1714 Opts.Coroutines = Args.hasArg(OPT_fcoroutines);
1715 Opts.Modules = Args.hasArg(OPT_fmodules);
1716 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
1717 Opts.ModulesDeclUse =
1718 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
1719 Opts.ModulesLocalVisibility =
1720 Args.hasArg(OPT_fmodules_local_submodule_visibility);
1721 Opts.ModulesSearchAll = Opts.Modules &&
1722 !Args.hasArg(OPT_fno_modules_search_all) &&
1723 Args.hasArg(OPT_fmodules_search_all);
1724 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
1725 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules);
1726 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
1727 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
1728 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
1729 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1730 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1731 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1732 if (!Opts.NoBuiltin)
1733 getAllNoBuiltinFuncValues(Args, Opts.NoBuiltinFuncs);
1734 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
1735 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation);
1736 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts);
1737 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1738 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1739 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1740 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
1741 Opts.InstantiationDepth =
1742 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags);
1744 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
1745 Opts.ConstexprCallDepth =
1746 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
1747 Opts.ConstexprStepLimit =
1748 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
1749 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
1750 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1751 Opts.NumLargeByValueCopy =
1752 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
1753 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1754 Opts.ObjCConstantStringClass =
1755 Args.getLastArgValue(OPT_fconstant_string_class);
1756 Opts.ObjCDefaultSynthProperties =
1757 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
1758 Opts.EncodeExtendedBlockSig =
1759 Args.hasArg(OPT_fencode_extended_block_signature);
1760 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1761 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
1762 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
1763 Opts.AlignDouble = Args.hasArg(OPT_malign_double);
1764 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1765 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags);
1766 Opts.Static = Args.hasArg(OPT_static_define);
1767 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1768 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
1769 || Args.hasArg(OPT_fdump_record_layouts);
1770 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1771 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1772 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1773 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1774 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1775 Opts.MRTD = Args.hasArg(OPT_mrtd);
1776 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1777 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1778 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1779 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1780 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
1781 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
1782 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1783 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name_EQ);
1784 Opts.AppExt = Args.hasArg(OPT_fapplication_extension);
1785 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature);
1786 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end());
1787 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type);
1788 Opts.NativeHalfArgsAndReturns |= Args.hasArg(OPT_fnative_half_arguments_and_returns);
1789 // Enable HalfArgsAndReturns if present in Args or if NativeHalfArgsAndReturns
1791 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns)
1792 | Opts.NativeHalfArgsAndReturns;
1793 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm);
1795 // __declspec is enabled by default for the PS4 by the driver, and also
1796 // enabled for Microsoft Extensions or Borland Extensions, here.
1798 // FIXME: __declspec is also currently enabled for CUDA, but isn't really a
1799 // CUDA extension, however it is required for supporting cuda_builtin_vars.h,
1800 // which uses __declspec(property). Once that has been rewritten in terms of
1801 // something more generic, remove the Opts.CUDA term here.
1802 Opts.DeclSpecKeyword =
1803 Args.hasFlag(OPT_fdeclspec, OPT_fno_declspec,
1804 (Opts.MicrosoftExt || Opts.Borland || Opts.CUDA));
1806 // For now, we only support local submodule visibility in C++ (because we
1807 // heavily depend on the ODR for merging redefinitions).
1808 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus)
1809 Diags.Report(diag::err_drv_argument_not_allowed_with)
1810 << "-fmodules-local-submodule-visibility" << "C";
1812 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
1813 switch (llvm::StringSwitch<unsigned>(A->getValue())
1814 .Case("target", LangOptions::ASMM_Target)
1815 .Case("no", LangOptions::ASMM_Off)
1816 .Case("yes", LangOptions::ASMM_On)
1819 Diags.Report(diag::err_drv_invalid_value)
1820 << "-faddress-space-map-mangling=" << A->getValue();
1822 case LangOptions::ASMM_Target:
1823 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
1825 case LangOptions::ASMM_On:
1826 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
1828 case LangOptions::ASMM_Off:
1829 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
1834 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
1835 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
1836 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
1839 LangOptions::PPTMK_FullGeneralitySingleInheritance)
1841 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
1843 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
1844 .Default(LangOptions::PPTMK_BestCase);
1845 if (InheritanceModel == LangOptions::PPTMK_BestCase)
1846 Diags.Report(diag::err_drv_invalid_value)
1847 << "-fms-memptr-rep=" << A->getValue();
1849 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
1852 // Check if -fopenmp is specified.
1853 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp);
1855 Opts.OpenMP && !Args.hasArg(options::OPT_fnoopenmp_use_tls);
1856 Opts.OpenMPIsDevice =
1857 Opts.OpenMP && Args.hasArg(options::OPT_fopenmp_is_device);
1859 // Provide diagnostic when a given target is not expected to be an OpenMP
1861 if (Opts.OpenMP && !Opts.OpenMPIsDevice) {
1862 switch (T.getArch()) {
1865 // Add unsupported host targets here:
1866 case llvm::Triple::nvptx:
1867 case llvm::Triple::nvptx64:
1868 Diags.Report(clang::diag::err_drv_omp_host_target_not_supported)
1869 << TargetOpts.Triple;
1874 // Get the OpenMP target triples if any.
1875 if (Arg *A = Args.getLastArg(options::OPT_fomptargets_EQ)) {
1877 for (unsigned i = 0; i < A->getNumValues(); ++i) {
1878 llvm::Triple TT(A->getValue(i));
1880 if (TT.getArch() == llvm::Triple::UnknownArch)
1881 Diags.Report(clang::diag::err_drv_invalid_omp_target) << A->getValue(i);
1883 Opts.OMPTargetTriples.push_back(TT);
1887 // Get OpenMP host file path if any and report if a non existent file is
1889 if (Arg *A = Args.getLastArg(options::OPT_fomp_host_ir_file_path)) {
1890 Opts.OMPHostIRFile = A->getValue();
1891 if (!llvm::sys::fs::exists(Opts.OMPHostIRFile))
1892 Diags.Report(clang::diag::err_drv_omp_host_ir_file_not_found)
1893 << Opts.OMPHostIRFile;
1896 // Record whether the __DEPRECATED define was requested.
1897 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1898 OPT_fno_deprecated_macro,
1901 // FIXME: Eliminate this dependency.
1902 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
1903 OptSize = getOptimizationLevelSize(Args);
1904 Opts.Optimize = Opt != 0;
1905 Opts.OptimizeSize = OptSize != 0;
1907 // This is the __NO_INLINE__ define, which just depends on things like the
1908 // optimization level and -fno-inline, not actually whether the backend has
1909 // inlining enabled.
1910 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
1912 Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
1913 Args.hasArg(OPT_cl_fast_relaxed_math);
1914 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
1915 Args.hasArg(OPT_cl_finite_math_only) ||
1916 Args.hasArg(OPT_cl_fast_relaxed_math);
1917 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
1918 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
1919 Args.hasArg(OPT_cl_fast_relaxed_math);
1921 Opts.RetainCommentsFromSystemHeaders =
1922 Args.hasArg(OPT_fretain_comments_from_system_headers);
1924 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1927 Diags.Report(diag::err_drv_invalid_value)
1928 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1930 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1931 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
1932 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
1933 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
1936 // Parse -fsanitize= arguments.
1937 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
1938 Diags, Opts.Sanitize);
1939 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
1940 Opts.SanitizeAddressFieldPadding =
1941 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
1942 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist);
1945 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1946 FileManager &FileMgr,
1947 DiagnosticsEngine &Diags) {
1948 using namespace options;
1949 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1950 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1951 if (const Arg *A = Args.getLastArg(OPT_token_cache))
1952 Opts.TokenCache = A->getValue();
1954 Opts.TokenCache = Opts.ImplicitPTHInclude;
1955 Opts.UsePredefines = !Args.hasArg(OPT_undef);
1956 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1957 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1959 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1960 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl))
1961 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
1963 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1964 StringRef Value(A->getValue());
1965 size_t Comma = Value.find(',');
1967 unsigned EndOfLine = 0;
1969 if (Comma == StringRef::npos ||
1970 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1971 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1972 Diags.Report(diag::err_drv_preamble_format);
1974 Opts.PrecompiledPreambleBytes.first = Bytes;
1975 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1979 // Add macros from the command line.
1980 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) {
1981 if (A->getOption().matches(OPT_D))
1982 Opts.addMacroDef(A->getValue());
1984 Opts.addMacroUndef(A->getValue());
1987 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1989 // Add the ordered list of -includes.
1990 for (const Arg *A : Args.filtered(OPT_include))
1991 Opts.Includes.emplace_back(A->getValue());
1993 for (const Arg *A : Args.filtered(OPT_chain_include))
1994 Opts.ChainedIncludes.emplace_back(A->getValue());
1996 for (const Arg *A : Args.filtered(OPT_remap_file)) {
1997 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';');
1999 if (Split.second.empty()) {
2000 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
2004 Opts.addRemappedFile(Split.first, Split.second);
2007 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
2008 StringRef Name = A->getValue();
2009 unsigned Library = llvm::StringSwitch<unsigned>(Name)
2010 .Case("libc++", ARCXX_libcxx)
2011 .Case("libstdc++", ARCXX_libstdcxx)
2012 .Case("none", ARCXX_nolib)
2015 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
2017 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
2021 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
2023 frontend::ActionKind Action) {
2024 using namespace options;
2027 case frontend::ASTDeclList:
2028 case frontend::ASTDump:
2029 case frontend::ASTPrint:
2030 case frontend::ASTView:
2031 case frontend::EmitAssembly:
2032 case frontend::EmitBC:
2033 case frontend::EmitHTML:
2034 case frontend::EmitLLVM:
2035 case frontend::EmitLLVMOnly:
2036 case frontend::EmitCodeGenOnly:
2037 case frontend::EmitObj:
2038 case frontend::FixIt:
2039 case frontend::GenerateModule:
2040 case frontend::GeneratePCH:
2041 case frontend::GeneratePTH:
2042 case frontend::ParseSyntaxOnly:
2043 case frontend::ModuleFileInfo:
2044 case frontend::VerifyPCH:
2045 case frontend::PluginAction:
2046 case frontend::PrintDeclContext:
2047 case frontend::RewriteObjC:
2048 case frontend::RewriteTest:
2049 case frontend::RunAnalysis:
2050 case frontend::MigrateSource:
2054 case frontend::DumpRawTokens:
2055 case frontend::DumpTokens:
2056 case frontend::InitOnly:
2057 case frontend::PrintPreamble:
2058 case frontend::PrintPreprocessedInput:
2059 case frontend::RewriteMacros:
2060 case frontend::RunPreprocessorOnly:
2061 Opts.ShowCPP = !Args.hasArg(OPT_dM);
2065 Opts.ShowComments = Args.hasArg(OPT_C);
2066 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
2067 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
2068 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
2069 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
2070 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives);
2073 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args,
2074 DiagnosticsEngine &Diags) {
2075 using namespace options;
2076 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
2077 if (Arg *A = Args.getLastArg(OPT_meabi)) {
2078 StringRef Value = A->getValue();
2079 llvm::EABI EABIVersion = llvm::StringSwitch<llvm::EABI>(Value)
2080 .Case("default", llvm::EABI::Default)
2081 .Case("4", llvm::EABI::EABI4)
2082 .Case("5", llvm::EABI::EABI5)
2083 .Case("gnu", llvm::EABI::GNU)
2084 .Default(llvm::EABI::Unknown);
2085 if (EABIVersion == llvm::EABI::Unknown)
2086 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
2089 Opts.EABIVersion = Value;
2091 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
2092 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
2093 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
2094 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
2095 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
2096 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ);
2097 // Use the default target triple if unspecified.
2098 if (Opts.Triple.empty())
2099 Opts.Triple = llvm::sys::getDefaultTargetTriple();
2102 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
2103 const char *const *ArgBegin,
2104 const char *const *ArgEnd,
2105 DiagnosticsEngine &Diags) {
2106 bool Success = true;
2108 // Parse the arguments.
2109 std::unique_ptr<OptTable> Opts(createDriverOptTable());
2110 const unsigned IncludedFlagsBitmask = options::CC1Option;
2111 unsigned MissingArgIndex, MissingArgCount;
2113 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex,
2114 MissingArgCount, IncludedFlagsBitmask);
2115 LangOptions &LangOpts = *Res.getLangOpts();
2117 // Check for missing argument error.
2118 if (MissingArgCount) {
2119 Diags.Report(diag::err_drv_missing_argument)
2120 << Args.getArgString(MissingArgIndex) << MissingArgCount;
2124 // Issue errors on unknown arguments.
2125 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) {
2126 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args);
2130 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags);
2131 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args);
2132 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args);
2133 Success &= ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags);
2134 ParseCommentArgs(LangOpts.CommentOpts, Args);
2135 ParseFileSystemArgs(Res.getFileSystemOpts(), Args);
2136 // FIXME: We shouldn't have to pass the DashX option around here
2137 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags);
2138 ParseTargetArgs(Res.getTargetOpts(), Args, Diags);
2139 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags,
2140 Res.getTargetOpts());
2141 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args);
2142 if (DashX == IK_AST || DashX == IK_LLVM_IR) {
2143 // ObjCAAutoRefCount and Sanitize LangOpts are used to setup the
2144 // PassManager in BackendUtil.cpp. They need to be initializd no matter
2145 // what the input type is.
2146 if (Args.hasArg(OPT_fobjc_arc))
2147 LangOpts.ObjCAutoRefCount = 1;
2148 // PIClevel and PIELevel are needed during code generation and this should be
2149 // set regardless of the input type.
2150 LangOpts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
2151 LangOpts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags);
2152 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
2153 Diags, LangOpts.Sanitize);
2155 // Other LangOpts are only initialzed when the input is not AST or LLVM IR.
2156 ParseLangArgs(LangOpts, Args, DashX, Res.getTargetOpts(), Diags);
2157 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2158 LangOpts.ObjCExceptions = 1;
2161 // During CUDA device-side compilation, the aux triple is the triple used for
2162 // host compilation.
2163 if (LangOpts.CUDA && LangOpts.CUDAIsDevice) {
2164 Res.getTargetOpts().HostTriple = Res.getFrontendOpts().AuxTriple;
2167 // FIXME: Override value name discarding when asan or msan is used because the
2168 // backend passes depend on the name of the alloca in order to print out
2170 Res.getCodeGenOpts().DiscardValueNames &=
2171 !LangOpts.Sanitize.has(SanitizerKind::Address) &&
2172 !LangOpts.Sanitize.has(SanitizerKind::Memory);
2174 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
2175 // PCH file and find the original header name. Remove the need to do that in
2176 // ParsePreprocessorArgs and remove the FileManager
2177 // parameters from the function and the "FileManager.h" #include.
2178 FileManager FileMgr(Res.getFileSystemOpts());
2179 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags);
2180 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args,
2181 Res.getFrontendOpts().ProgramAction);
2187 class ModuleSignature {
2188 SmallVector<uint64_t, 16> Data;
2193 ModuleSignature() : CurBit(0), CurValue(0) { }
2195 void add(uint64_t Value, unsigned Bits);
2196 void add(StringRef Value);
2199 llvm::APInt getAsInteger() const;
2203 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
2204 CurValue |= Value << CurBit;
2205 if (CurBit + NumBits < 64) {
2210 // Add the current word.
2211 Data.push_back(CurValue);
2214 CurValue = Value >> (64-CurBit);
2217 CurBit = (CurBit+NumBits) & 63;
2220 void ModuleSignature::flush() {
2224 Data.push_back(CurValue);
2229 void ModuleSignature::add(StringRef Value) {
2230 for (auto &c : Value)
2234 llvm::APInt ModuleSignature::getAsInteger() const {
2235 return llvm::APInt(Data.size() * 64, Data);
2238 std::string CompilerInvocation::getModuleHash() const {
2239 // Note: For QoI reasons, the things we use as a hash here should all be
2240 // dumped via the -module-info flag.
2241 using llvm::hash_code;
2242 using llvm::hash_value;
2243 using llvm::hash_combine;
2245 // Start the signature with the compiler version.
2246 // FIXME: We'd rather use something more cryptographically sound than
2247 // CityHash, but this will do for now.
2248 hash_code code = hash_value(getClangFullRepositoryVersion());
2250 // Extend the signature with the language options
2251 #define LANGOPT(Name, Bits, Default, Description) \
2252 code = hash_combine(code, LangOpts->Name);
2253 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2254 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
2255 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
2256 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
2257 #include "clang/Basic/LangOptions.def"
2259 for (StringRef Feature : LangOpts->ModuleFeatures)
2260 code = hash_combine(code, Feature);
2262 // Extend the signature with the target options.
2263 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
2265 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
2266 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
2268 // Extend the signature with preprocessor options.
2269 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
2270 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
2271 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
2273 for (std::vector<std::pair<std::string, bool/*isUndef*/>>::const_iterator
2274 I = getPreprocessorOpts().Macros.begin(),
2275 IEnd = getPreprocessorOpts().Macros.end();
2277 // If we're supposed to ignore this macro for the purposes of modules,
2278 // don't put it into the hash.
2279 if (!hsOpts.ModulesIgnoreMacros.empty()) {
2280 // Check whether we're ignoring this macro.
2281 StringRef MacroDef = I->first;
2282 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first))
2286 code = hash_combine(code, I->first, I->second);
2289 // Extend the signature with the sysroot and other header search options.
2290 code = hash_combine(code, hsOpts.Sysroot,
2291 hsOpts.ModuleFormat,
2292 hsOpts.UseDebugInfo,
2293 hsOpts.UseBuiltinIncludes,
2294 hsOpts.UseStandardSystemIncludes,
2295 hsOpts.UseStandardCXXIncludes,
2297 code = hash_combine(code, hsOpts.ResourceDir);
2299 // Extend the signature with the user build path.
2300 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
2302 // Extend the signature with the module file extensions.
2303 const FrontendOptions &frontendOpts = getFrontendOpts();
2304 for (auto ext : frontendOpts.ModuleFileExtensions) {
2305 code = ext->hashExtension(code);
2308 // Darwin-specific hack: if we have a sysroot, use the contents and
2309 // modification time of
2310 // $sysroot/System/Library/CoreServices/SystemVersion.plist
2311 // as part of the module hash.
2312 if (!hsOpts.Sysroot.empty()) {
2313 SmallString<128> systemVersionFile;
2314 systemVersionFile += hsOpts.Sysroot;
2315 llvm::sys::path::append(systemVersionFile, "System");
2316 llvm::sys::path::append(systemVersionFile, "Library");
2317 llvm::sys::path::append(systemVersionFile, "CoreServices");
2318 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist");
2320 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer =
2321 llvm::MemoryBuffer::getFile(systemVersionFile);
2323 code = hash_combine(code, buffer.get()->getBuffer());
2325 struct stat statBuf;
2326 if (stat(systemVersionFile.c_str(), &statBuf) == 0)
2327 code = hash_combine(code, statBuf.st_mtime);
2331 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
2336 template<typename IntTy>
2337 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
2339 DiagnosticsEngine *Diags) {
2340 IntTy Res = Default;
2341 if (Arg *A = Args.getLastArg(Id)) {
2342 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
2344 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
2352 // Declared in clang/Frontend/Utils.h.
2353 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
2354 DiagnosticsEngine *Diags) {
2355 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
2358 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
2360 DiagnosticsEngine *Diags) {
2361 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
2364 void BuryPointer(const void *Ptr) {
2365 // This function may be called only a small fixed amount of times per each
2366 // invocation, otherwise we do actually have a leak which we want to report.
2367 // If this function is called more than kGraveYardMaxSize times, the pointers
2368 // will not be properly buried and a leak detector will report a leak, which
2369 // is what we want in such case.
2370 static const size_t kGraveYardMaxSize = 16;
2371 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2372 static std::atomic<unsigned> GraveYardSize;
2373 unsigned Idx = GraveYardSize++;
2374 if (Idx >= kGraveYardMaxSize)
2376 GraveYard[Idx] = Ptr;
2379 IntrusiveRefCntPtr<vfs::FileSystem>
2380 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2381 DiagnosticsEngine &Diags) {
2382 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2383 return vfs::getRealFileSystem();
2385 IntrusiveRefCntPtr<vfs::OverlayFileSystem>
2386 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem()));
2387 // earlier vfs files are on the bottom
2388 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2389 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2390 llvm::MemoryBuffer::getFile(File);
2392 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2393 return IntrusiveRefCntPtr<vfs::FileSystem>();
2396 IntrusiveRefCntPtr<vfs::FileSystem> FS = vfs::getVFSFromYAML(
2397 std::move(Buffer.get()), /*DiagHandler*/ nullptr, File);
2399 Diags.Report(diag::err_invalid_vfs_overlay) << File;
2400 return IntrusiveRefCntPtr<vfs::FileSystem>();
2402 Overlay->pushOverlay(FS);
2406 } // end namespace clang