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 "clang/Basic/FileManager.h"
12 #include "clang/Basic/Version.h"
13 #include "clang/Driver/DriverDiagnostic.h"
14 #include "clang/Driver/Options.h"
15 #include "clang/Driver/Util.h"
16 #include "clang/Frontend/FrontendDiagnostic.h"
17 #include "clang/Frontend/LangStandard.h"
18 #include "clang/Frontend/Utils.h"
19 #include "clang/Lex/HeaderSearchOptions.h"
20 #include "clang/Serialization/ASTReader.h"
21 #include "llvm/ADT/Hashing.h"
22 #include "llvm/ADT/SmallVector.h"
23 #include "llvm/ADT/STLExtras.h"
24 #include "llvm/ADT/StringExtras.h"
25 #include "llvm/ADT/StringSwitch.h"
26 #include "llvm/ADT/Triple.h"
27 #include "llvm/Option/Arg.h"
28 #include "llvm/Option/ArgList.h"
29 #include "llvm/Option/OptTable.h"
30 #include "llvm/Option/Option.h"
31 #include "llvm/Support/CodeGen.h"
32 #include "llvm/Support/ErrorHandling.h"
33 #include "llvm/Support/FileSystem.h"
34 #include "llvm/Support/Host.h"
35 #include "llvm/Support/Path.h"
36 #include "llvm/Support/Process.h"
40 #include <system_error>
41 using namespace clang;
43 //===----------------------------------------------------------------------===//
45 //===----------------------------------------------------------------------===//
47 CompilerInvocationBase::CompilerInvocationBase()
48 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
49 DiagnosticOpts(new DiagnosticOptions()),
50 HeaderSearchOpts(new HeaderSearchOptions()),
51 PreprocessorOpts(new PreprocessorOptions()) {}
53 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
54 : RefCountedBase<CompilerInvocation>(),
55 LangOpts(new LangOptions(*X.getLangOpts())),
56 TargetOpts(new TargetOptions(X.getTargetOpts())),
57 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
58 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
59 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
61 CompilerInvocationBase::~CompilerInvocationBase() {}
63 //===----------------------------------------------------------------------===//
64 // Deserialization (from args)
65 //===----------------------------------------------------------------------===//
67 using namespace clang::driver;
68 using namespace clang::driver::options;
69 using namespace llvm::opt;
73 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
74 DiagnosticsEngine &Diags) {
75 unsigned DefaultOpt = 0;
76 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
79 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
80 if (A->getOption().matches(options::OPT_O0))
83 if (A->getOption().matches(options::OPT_Ofast))
86 assert (A->getOption().matches(options::OPT_O));
88 StringRef S(A->getValue());
89 if (S == "s" || S == "z" || S.empty())
92 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
98 static unsigned getOptimizationLevelSize(ArgList &Args) {
99 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
100 if (A->getOption().matches(options::OPT_O)) {
101 switch (A->getValue()[0]) {
114 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
115 OptSpecifier GroupWithValue,
116 std::vector<std::string> &Diagnostics) {
117 for (Arg *A : Args.filtered(Group)) {
118 if (A->getOption().getKind() == Option::FlagClass) {
119 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
120 // its name (minus the "W" or "R" at the beginning) to the warning list.
121 Diagnostics.push_back(A->getOption().getName().drop_front(1));
122 } else if (A->getOption().matches(GroupWithValue)) {
123 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group.
124 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-"));
126 // Otherwise, add its value (for OPT_W_Joined and similar).
127 for (const char *Arg : A->getValues())
128 Diagnostics.push_back(Arg);
133 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
134 DiagnosticsEngine &Diags) {
135 using namespace options;
137 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
138 StringRef Name = A->getValue();
139 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
140 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
141 .Case(CMDFLAG, NAME##Model)
142 #include "clang/StaticAnalyzer/Core/Analyses.def"
144 if (Value == NumStores) {
145 Diags.Report(diag::err_drv_invalid_value)
146 << A->getAsString(Args) << Name;
149 Opts.AnalysisStoreOpt = Value;
153 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
154 StringRef Name = A->getValue();
155 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
156 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
157 .Case(CMDFLAG, NAME##Model)
158 #include "clang/StaticAnalyzer/Core/Analyses.def"
159 .Default(NumConstraints);
160 if (Value == NumConstraints) {
161 Diags.Report(diag::err_drv_invalid_value)
162 << A->getAsString(Args) << Name;
165 Opts.AnalysisConstraintsOpt = Value;
169 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
170 StringRef Name = A->getValue();
171 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
172 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
173 .Case(CMDFLAG, PD_##NAME)
174 #include "clang/StaticAnalyzer/Core/Analyses.def"
175 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
176 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
177 Diags.Report(diag::err_drv_invalid_value)
178 << A->getAsString(Args) << Name;
181 Opts.AnalysisDiagOpt = Value;
185 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
186 StringRef Name = A->getValue();
187 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
188 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
190 #include "clang/StaticAnalyzer/Core/Analyses.def"
191 .Default(NumPurgeModes);
192 if (Value == NumPurgeModes) {
193 Diags.Report(diag::err_drv_invalid_value)
194 << A->getAsString(Args) << Name;
197 Opts.AnalysisPurgeOpt = Value;
201 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
202 StringRef Name = A->getValue();
203 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
204 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
206 #include "clang/StaticAnalyzer/Core/Analyses.def"
207 .Default(NumInliningModes);
208 if (Value == NumInliningModes) {
209 Diags.Report(diag::err_drv_invalid_value)
210 << A->getAsString(Args) << Name;
213 Opts.InliningMode = Value;
217 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
218 Opts.visualizeExplodedGraphWithGraphViz =
219 Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
220 Opts.visualizeExplodedGraphWithUbiGraph =
221 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
222 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
223 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
224 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
225 Opts.AnalyzeNestedBlocks =
226 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
227 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume);
228 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
229 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
230 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
231 Opts.maxBlockVisitOnPath =
232 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags);
233 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
234 Opts.InlineMaxStackDepth =
235 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth,
236 Opts.InlineMaxStackDepth, Diags);
238 Opts.CheckersControlList.clear();
239 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
240 OPT_analyzer_disable_checker),
241 ie = Args.filtered_end(); it != ie; ++it) {
244 bool enable = (A->getOption().getID() == OPT_analyzer_checker);
245 // We can have a list of comma separated checker names, e.g:
246 // '-analyzer-checker=cocoa,unix'
247 StringRef checkerList = A->getValue();
248 SmallVector<StringRef, 4> checkers;
249 checkerList.split(checkers, ",");
250 for (unsigned i = 0, e = checkers.size(); i != e; ++i)
251 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
254 // Go through the analyzer configuration options.
255 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config),
256 ie = Args.filtered_end(); it != ie; ++it) {
259 // We can have a list of comma separated config names, e.g:
260 // '-analyzer-config key1=val1,key2=val2'
261 StringRef configList = A->getValue();
262 SmallVector<StringRef, 4> configVals;
263 configList.split(configVals, ",");
264 for (unsigned i = 0, e = configVals.size(); i != e; ++i) {
266 std::tie(key, val) = configVals[i].split("=");
268 Diags.Report(SourceLocation(),
269 diag::err_analyzer_config_no_value) << configVals[i];
273 if (val.find('=') != StringRef::npos) {
274 Diags.Report(SourceLocation(),
275 diag::err_analyzer_config_multiple_values)
280 Opts.Config[key] = val;
287 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
288 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
289 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
293 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
294 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
295 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments);
298 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) {
299 if (Arg *A = Args.getLastArg(OPT_mcode_model)) {
300 StringRef Value = A->getValue();
301 if (Value == "small" || Value == "kernel" || Value == "medium" ||
304 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
309 /// \brief Create a new Regex instance out of the string value in \p RpassArg.
310 /// It returns a pointer to the newly generated Regex instance.
311 static std::shared_ptr<llvm::Regex>
312 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args,
314 StringRef Val = RpassArg->getValue();
315 std::string RegexError;
316 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
317 if (!Pattern->isValid(RegexError)) {
318 Diags.Report(diag::err_drv_optimization_remark_pattern)
319 << RegexError << RpassArg->getAsString(Args);
325 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
326 DiagnosticsEngine &Diags,
327 const TargetOptions &TargetOpts) {
328 using namespace options;
331 Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
332 // TODO: This could be done in Driver
333 unsigned MaxOptLevel = 3;
334 if (Opts.OptimizationLevel > MaxOptLevel) {
335 // If the optimization level is not supported, fall back on the default optimization
336 Diags.Report(diag::warn_drv_optimization_value)
337 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
338 Opts.OptimizationLevel = MaxOptLevel;
341 // We must always run at least the always inlining pass.
343 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
344 : CodeGenOptions::OnlyAlwaysInlining);
345 // -fno-inline-functions overrides OptimizationLevel > 1.
346 Opts.NoInline = Args.hasArg(OPT_fno_inline);
347 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ?
348 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining());
350 if (Args.hasArg(OPT_gline_tables_only)) {
351 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly);
352 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) ||
353 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) {
354 bool Default = false;
355 // Until dtrace (via CTF) and LLDB can deal with distributed debug info,
356 // Darwin and FreeBSD default to standalone/full debug info.
357 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() ||
358 llvm::Triple(TargetOpts.Triple).isOSFreeBSD())
361 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default))
362 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo);
364 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo);
366 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
367 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
368 if (Args.hasArg(OPT_gdwarf_2))
369 Opts.DwarfVersion = 2;
370 else if (Args.hasArg(OPT_gdwarf_3))
371 Opts.DwarfVersion = 3;
372 else if (Args.hasArg(OPT_gdwarf_4))
373 Opts.DwarfVersion = 4;
374 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo)
375 // Default Dwarf version is 4 if we are generating debug information.
376 Opts.DwarfVersion = 4;
378 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
379 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
380 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
381 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
382 OPT_fuse_register_sized_bitfield_access);
383 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
384 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
385 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
386 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
387 Opts.NoCommon = Args.hasArg(OPT_fno_common);
388 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
389 Opts.OptimizeSize = getOptimizationLevelSize(Args);
390 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
391 Args.hasArg(OPT_ffreestanding));
393 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
394 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize));
395 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
397 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
398 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
399 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
400 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate);
401 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ);
402 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
403 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
404 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
405 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
406 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
407 Opts.CodeModel = getCodeModel(Args, Diags);
408 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
409 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
410 Opts.DisableFree = Args.hasArg(OPT_disable_free);
411 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
412 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
413 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
414 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
415 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
416 Args.hasArg(OPT_cl_finite_math_only)||
417 Args.hasArg(OPT_cl_fast_relaxed_math));
418 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
419 Args.hasArg(OPT_cl_finite_math_only)||
420 Args.hasArg(OPT_cl_fast_relaxed_math));
421 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
422 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
423 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
424 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
425 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
426 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
427 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
428 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
429 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
430 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
431 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
432 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
433 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
434 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
435 Args.hasArg(OPT_cl_fast_relaxed_math);
436 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
437 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
438 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
439 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
441 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
442 OPT_fno_function_sections, false);
443 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
444 OPT_fno_data_sections, false);
446 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
447 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
448 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
450 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
451 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
452 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover);
454 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
455 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
456 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
457 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
458 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
459 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
460 Opts.CoverageNoFunctionNamesInData =
461 Args.hasArg(OPT_coverage_no_function_names_in_data);
462 if (Args.hasArg(OPT_coverage_version_EQ)) {
463 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
464 if (CoverageVersion.size() != 4) {
465 Diags.Report(diag::err_drv_invalid_value)
466 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
469 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
474 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
475 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
476 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
477 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
478 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
479 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
480 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist);
481 Opts.SanitizeMemoryTrackOrigins =
482 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
483 Opts.SanitizeUndefinedTrapOnError =
484 Args.hasArg(OPT_fsanitize_undefined_trap_on_error);
486 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
487 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
488 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
489 StringRef Val = A->getValue();
490 unsigned StackAlignment = Opts.StackAlignment;
491 Val.getAsInteger(10, StackAlignment);
492 Opts.StackAlignment = StackAlignment;
495 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
496 StringRef Name = A->getValue();
497 unsigned Method = llvm::StringSwitch<unsigned>(Name)
498 .Case("legacy", CodeGenOptions::Legacy)
499 .Case("non-legacy", CodeGenOptions::NonLegacy)
500 .Case("mixed", CodeGenOptions::Mixed)
503 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
506 Opts.setObjCDispatchMethod(
507 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
511 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
512 StringRef Name = A->getValue();
513 unsigned Model = llvm::StringSwitch<unsigned>(Name)
514 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
515 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
516 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
517 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
520 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
523 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
527 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
528 StringRef Val = A->getValue();
530 Opts.setFPContractMode(CodeGenOptions::FPC_Fast);
531 else if (Val == "on")
532 Opts.setFPContractMode(CodeGenOptions::FPC_On);
533 else if (Val == "off")
534 Opts.setFPContractMode(CodeGenOptions::FPC_Off);
536 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
539 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
540 if (A->getOption().matches(OPT_fpcc_struct_return)) {
541 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
543 assert(A->getOption().matches(OPT_freg_struct_return));
544 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
548 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
549 bool NeedLocTracking = false;
551 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
552 Opts.OptimizationRemarkPattern =
553 GenerateOptimizationRemarkRegex(Diags, Args, A);
554 NeedLocTracking = true;
557 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
558 Opts.OptimizationRemarkMissedPattern =
559 GenerateOptimizationRemarkRegex(Diags, Args, A);
560 NeedLocTracking = true;
563 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
564 Opts.OptimizationRemarkAnalysisPattern =
565 GenerateOptimizationRemarkRegex(Diags, Args, A);
566 NeedLocTracking = true;
569 // If the user requested one of the flags in the -Rpass family, make sure
570 // that the backend tracks source location information.
571 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo)
572 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly);
577 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
579 using namespace options;
580 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
581 Opts.Targets = Args.getAllArgValues(OPT_MT);
582 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
583 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
584 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
585 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
586 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
587 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
588 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
589 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
590 Opts.ModuleDependencyOutputDir =
591 Args.getLastArgValue(OPT_module_dependency_dir);
594 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
595 DiagnosticsEngine *Diags) {
596 using namespace options;
599 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
600 Opts.DiagnosticSerializationFile =
601 Args.getLastArgValue(OPT_diagnostic_serialized_file);
602 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
603 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
604 Opts.Pedantic = Args.hasArg(OPT_pedantic);
605 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
606 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
607 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
608 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
611 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
612 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
613 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
615 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
617 // Default behavior is to not to show note include stacks.
618 Opts.ShowNoteIncludeStack = false;
619 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
620 OPT_fno_diagnostics_show_note_include_stack))
621 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
622 Opts.ShowNoteIncludeStack = true;
624 StringRef ShowOverloads =
625 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
626 if (ShowOverloads == "best")
627 Opts.setShowOverloads(Ovl_Best);
628 else if (ShowOverloads == "all")
629 Opts.setShowOverloads(Ovl_All);
633 Diags->Report(diag::err_drv_invalid_value)
634 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
638 StringRef ShowCategory =
639 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
640 if (ShowCategory == "none")
641 Opts.ShowCategories = 0;
642 else if (ShowCategory == "id")
643 Opts.ShowCategories = 1;
644 else if (ShowCategory == "name")
645 Opts.ShowCategories = 2;
649 Diags->Report(diag::err_drv_invalid_value)
650 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
655 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
656 if (Format == "clang")
657 Opts.setFormat(DiagnosticOptions::Clang);
658 else if (Format == "msvc")
659 Opts.setFormat(DiagnosticOptions::Msvc);
660 else if (Format == "msvc-fallback") {
661 Opts.setFormat(DiagnosticOptions::Msvc);
662 Opts.CLFallbackMode = true;
663 } else if (Format == "vi")
664 Opts.setFormat(DiagnosticOptions::Vi);
668 Diags->Report(diag::err_drv_invalid_value)
669 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
673 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
674 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
675 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
676 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
677 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
678 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
679 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
680 Opts.MacroBacktraceLimit =
681 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
682 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
683 Opts.TemplateBacktraceLimit = getLastArgIntValue(
684 Args, OPT_ftemplate_backtrace_limit,
685 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
686 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
687 Args, OPT_fconstexpr_backtrace_limit,
688 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
689 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
690 DiagnosticOptions::DefaultTabStop, Diags);
691 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
692 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
694 Diags->Report(diag::warn_ignoring_ftabstop_value)
695 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
697 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
698 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
699 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
704 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
705 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
708 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
709 DiagnosticsEngine &Diags) {
710 using namespace options;
711 Opts.ProgramAction = frontend::ParseSyntaxOnly;
712 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
713 switch (A->getOption().getID()) {
715 llvm_unreachable("Invalid option in group!");
717 Opts.ProgramAction = frontend::ASTDeclList; break;
719 Opts.ProgramAction = frontend::ASTDump; break;
721 Opts.ProgramAction = frontend::ASTPrint; break;
723 Opts.ProgramAction = frontend::ASTView; break;
724 case OPT_dump_raw_tokens:
725 Opts.ProgramAction = frontend::DumpRawTokens; break;
726 case OPT_dump_tokens:
727 Opts.ProgramAction = frontend::DumpTokens; break;
729 Opts.ProgramAction = frontend::EmitAssembly; break;
730 case OPT_emit_llvm_bc:
731 Opts.ProgramAction = frontend::EmitBC; break;
733 Opts.ProgramAction = frontend::EmitHTML; break;
735 Opts.ProgramAction = frontend::EmitLLVM; break;
736 case OPT_emit_llvm_only:
737 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
738 case OPT_emit_codegen_only:
739 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
741 Opts.ProgramAction = frontend::EmitObj; break;
743 Opts.FixItSuffix = A->getValue();
746 Opts.ProgramAction = frontend::FixIt; break;
747 case OPT_emit_module:
748 Opts.ProgramAction = frontend::GenerateModule; break;
750 Opts.ProgramAction = frontend::GeneratePCH; break;
752 Opts.ProgramAction = frontend::GeneratePTH; break;
754 Opts.ProgramAction = frontend::InitOnly; break;
755 case OPT_fsyntax_only:
756 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
757 case OPT_module_file_info:
758 Opts.ProgramAction = frontend::ModuleFileInfo; break;
760 Opts.ProgramAction = frontend::VerifyPCH; break;
761 case OPT_print_decl_contexts:
762 Opts.ProgramAction = frontend::PrintDeclContext; break;
763 case OPT_print_preamble:
764 Opts.ProgramAction = frontend::PrintPreamble; break;
766 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
767 case OPT_rewrite_macros:
768 Opts.ProgramAction = frontend::RewriteMacros; break;
769 case OPT_rewrite_objc:
770 Opts.ProgramAction = frontend::RewriteObjC; break;
771 case OPT_rewrite_test:
772 Opts.ProgramAction = frontend::RewriteTest; break;
774 Opts.ProgramAction = frontend::RunAnalysis; break;
776 Opts.ProgramAction = frontend::MigrateSource; break;
778 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
782 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
783 Opts.Plugins.push_back(A->getValue(0));
784 Opts.ProgramAction = frontend::PluginAction;
785 Opts.ActionName = A->getValue();
787 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
788 end = Args.filtered_end(); it != end; ++it) {
789 if ((*it)->getValue(0) == Opts.ActionName)
790 Opts.PluginArgs.push_back((*it)->getValue(1));
794 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
795 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
796 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
797 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
798 end = Args.filtered_end(); it != end; ++it) {
799 if ((*it)->getValue(0) == Opts.AddPluginActions[i])
800 Opts.AddPluginArgs[i].push_back((*it)->getValue(1));
804 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
805 Opts.CodeCompletionAt =
806 ParsedSourceLocation::FromString(A->getValue());
807 if (Opts.CodeCompletionAt.FileName.empty())
808 Diags.Report(diag::err_drv_invalid_value)
809 << A->getAsString(Args) << A->getValue();
811 Opts.DisableFree = Args.hasArg(OPT_disable_free);
813 Opts.OutputFile = Args.getLastArgValue(OPT_o);
814 Opts.Plugins = Args.getAllArgValues(OPT_load);
815 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
816 Opts.ShowHelp = Args.hasArg(OPT_help);
817 Opts.ShowStats = Args.hasArg(OPT_print_stats);
818 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
819 Opts.ShowVersion = Args.hasArg(OPT_version);
820 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
821 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
822 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
823 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
824 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
825 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
826 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
827 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
828 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
829 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
831 Opts.CodeCompleteOpts.IncludeMacros
832 = Args.hasArg(OPT_code_completion_macros);
833 Opts.CodeCompleteOpts.IncludeCodePatterns
834 = Args.hasArg(OPT_code_completion_patterns);
835 Opts.CodeCompleteOpts.IncludeGlobals
836 = !Args.hasArg(OPT_no_code_completion_globals);
837 Opts.CodeCompleteOpts.IncludeBriefComments
838 = Args.hasArg(OPT_code_completion_brief_comments);
840 Opts.OverrideRecordLayoutsFile
841 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
842 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
844 OPT_arcmt_migrate)) {
845 switch (A->getOption().getID()) {
847 llvm_unreachable("missed a case");
848 case OPT_arcmt_check:
849 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
851 case OPT_arcmt_modify:
852 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
854 case OPT_arcmt_migrate:
855 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
859 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
860 Opts.ARCMTMigrateReportOut
861 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
862 Opts.ARCMTMigrateEmitARCErrors
863 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
865 if (Args.hasArg(OPT_objcmt_migrate_literals))
866 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
867 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
868 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
869 if (Args.hasArg(OPT_objcmt_migrate_property))
870 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
871 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
872 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
873 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
874 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
875 if (Args.hasArg(OPT_objcmt_migrate_annotation))
876 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
877 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
878 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
879 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
880 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
881 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
882 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
883 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
884 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
885 if (Args.hasArg(OPT_objcmt_atomic_property))
886 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
887 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
888 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
889 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
890 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
891 if (Args.hasArg(OPT_objcmt_migrate_all))
892 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
894 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
896 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
897 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
898 Diags.Report(diag::err_drv_argument_not_allowed_with)
899 << "ARC migration" << "ObjC migration";
902 InputKind DashX = IK_None;
903 if (const Arg *A = Args.getLastArg(OPT_x)) {
904 DashX = llvm::StringSwitch<InputKind>(A->getValue())
906 .Case("cl", IK_OpenCL)
907 .Case("cuda", IK_CUDA)
909 .Case("objective-c", IK_ObjC)
910 .Case("objective-c++", IK_ObjCXX)
911 .Case("cpp-output", IK_PreprocessedC)
912 .Case("assembler-with-cpp", IK_Asm)
913 .Case("c++-cpp-output", IK_PreprocessedCXX)
914 .Case("objective-c-cpp-output", IK_PreprocessedObjC)
915 .Case("objc-cpp-output", IK_PreprocessedObjC)
916 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
917 .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
918 .Case("c-header", IK_C)
919 .Case("cl-header", IK_OpenCL)
920 .Case("objective-c-header", IK_ObjC)
921 .Case("c++-header", IK_CXX)
922 .Case("objective-c++-header", IK_ObjCXX)
923 .Cases("ast", "pcm", IK_AST)
924 .Case("ir", IK_LLVM_IR)
926 if (DashX == IK_None)
927 Diags.Report(diag::err_drv_invalid_value)
928 << A->getAsString(Args) << A->getValue();
931 // '-' is the default input if none is given.
932 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
935 Inputs.push_back("-");
936 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
937 InputKind IK = DashX;
939 IK = FrontendOptions::getInputKindForExtension(
940 StringRef(Inputs[i]).rsplit('.').second);
941 // FIXME: Remove this hack.
945 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
951 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
953 SmallString<128> P(llvm::sys::fs::getMainExecutable(Argv0, MainAddr));
956 llvm::sys::path::remove_filename(P); // Remove /clang from foo/bin/clang
957 llvm::sys::path::remove_filename(P); // Remove /bin from foo/bin
959 // Get foo/lib/clang/<version>/include
960 llvm::sys::path::append(P, "lib", "clang", CLANG_VERSION_STRING);
966 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
967 using namespace options;
968 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
969 Opts.Verbose = Args.hasArg(OPT_v);
970 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
971 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
972 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
973 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
974 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
975 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
976 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path);
977 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
978 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
979 // -fmodules implies -fmodule-maps
980 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules);
981 Opts.ModuleCachePruneInterval =
982 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
983 Opts.ModuleCachePruneAfter =
984 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
985 Opts.ModulesValidateOncePerBuildSession =
986 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
987 Opts.BuildSessionTimestamp =
988 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
989 Opts.ModulesValidateSystemHeaders =
990 Args.hasArg(OPT_fmodules_validate_system_headers);
992 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro),
993 ie = Args.filtered_end();
995 StringRef MacroDef = (*it)->getValue();
996 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first);
998 std::vector<std::string> ModuleMapFiles =
999 Args.getAllArgValues(OPT_fmodule_map_file);
1000 Opts.ModuleMapFiles.insert(ModuleMapFiles.begin(), ModuleMapFiles.end());
1002 // Add -I..., -F..., and -index-header-map options in order.
1003 bool IsIndexHeaderMap = false;
1004 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1005 OPT_index_header_map),
1006 ie = Args.filtered_end(); it != ie; ++it) {
1007 if ((*it)->getOption().matches(OPT_index_header_map)) {
1008 // -index-header-map applies to the next -I or -F.
1009 IsIndexHeaderMap = true;
1013 frontend::IncludeDirGroup Group
1014 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1016 Opts.AddPath((*it)->getValue(), Group,
1017 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1018 IsIndexHeaderMap = false;
1021 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1022 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1023 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1024 OPT_iwithprefixbefore),
1025 ie = Args.filtered_end(); it != ie; ++it) {
1027 if (A->getOption().matches(OPT_iprefix))
1028 Prefix = A->getValue();
1029 else if (A->getOption().matches(OPT_iwithprefix))
1030 Opts.AddPath(Prefix.str() + A->getValue(),
1031 frontend::After, false, true);
1033 Opts.AddPath(Prefix.str() + A->getValue(),
1034 frontend::Angled, false, true);
1037 for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1038 ie = Args.filtered_end(); it != ie; ++it)
1039 Opts.AddPath((*it)->getValue(), frontend::After, false, true);
1040 for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1041 ie = Args.filtered_end(); it != ie; ++it)
1042 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true);
1043 for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1044 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1045 Opts.AddPath((*it)->getValue(), frontend::System, false,
1046 !(*it)->getOption().matches(OPT_iwithsysroot));
1047 for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1048 ie = Args.filtered_end(); it != ie; ++it)
1049 Opts.AddPath((*it)->getValue(), frontend::System, true, true);
1051 // Add the paths for the various language specific isystem flags.
1052 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1053 ie = Args.filtered_end(); it != ie; ++it)
1054 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true);
1055 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1056 ie = Args.filtered_end(); it != ie; ++it)
1057 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true);
1058 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1059 ie = Args.filtered_end(); it != ie; ++it)
1060 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true);
1061 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1062 ie = Args.filtered_end(); it != ie; ++it)
1063 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true);
1065 // Add the internal paths from a driver that detects standard include paths.
1066 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1067 OPT_internal_externc_isystem),
1068 E = Args.filtered_end();
1070 frontend::IncludeDirGroup Group = frontend::System;
1071 if ((*I)->getOption().matches(OPT_internal_externc_isystem))
1072 Group = frontend::ExternCSystem;
1073 Opts.AddPath((*I)->getValue(), Group, false, true);
1076 // Add the path prefixes which are implicitly treated as being system headers.
1077 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix,
1078 OPT_no_system_header_prefix),
1079 E = Args.filtered_end();
1081 Opts.AddSystemHeaderPrefix(
1082 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix));
1084 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay),
1085 E = Args.filtered_end(); I != E; ++I)
1086 Opts.AddVFSOverlayFile((*I)->getValue());
1089 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1090 LangStandard::Kind LangStd) {
1091 // Set some properties which depend solely on the input kind; it would be nice
1092 // to move these to the language standard, and have the driver resolve the
1093 // input kind + language standard.
1095 Opts.AsmPreprocessor = 1;
1096 } else if (IK == IK_ObjC ||
1098 IK == IK_PreprocessedObjC ||
1099 IK == IK_PreprocessedObjCXX) {
1100 Opts.ObjC1 = Opts.ObjC2 = 1;
1103 if (LangStd == LangStandard::lang_unspecified) {
1104 // Based on the base language, pick one.
1109 llvm_unreachable("Invalid input kind!");
1111 LangStd = LangStandard::lang_opencl;
1114 LangStd = LangStandard::lang_cuda;
1118 case IK_PreprocessedC:
1120 case IK_PreprocessedObjC:
1121 LangStd = LangStandard::lang_gnu99;
1124 case IK_PreprocessedCXX:
1126 case IK_PreprocessedObjCXX:
1127 LangStd = LangStandard::lang_gnucxx98;
1132 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1133 Opts.LineComment = Std.hasLineComments();
1134 Opts.C99 = Std.isC99();
1135 Opts.C11 = Std.isC11();
1136 Opts.CPlusPlus = Std.isCPlusPlus();
1137 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1138 Opts.CPlusPlus1y = Std.isCPlusPlus1y();
1139 Opts.CPlusPlus1z = Std.isCPlusPlus1z();
1140 Opts.Digraphs = Std.hasDigraphs();
1141 Opts.GNUMode = Std.isGNUMode();
1142 Opts.GNUInline = !Std.isC99();
1143 Opts.HexFloats = Std.hasHexFloats();
1144 Opts.ImplicitInt = Std.hasImplicitInt();
1146 // Set OpenCL Version.
1147 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL;
1148 if (LangStd == LangStandard::lang_opencl)
1149 Opts.OpenCLVersion = 100;
1150 else if (LangStd == LangStandard::lang_opencl11)
1151 Opts.OpenCLVersion = 110;
1152 else if (LangStd == LangStandard::lang_opencl12)
1153 Opts.OpenCLVersion = 120;
1155 // OpenCL has some additional defaults.
1158 Opts.CXXOperatorNames = 1;
1159 Opts.LaxVectorConversions = 0;
1160 Opts.DefaultFPContract = 1;
1161 Opts.NativeHalfType = 1;
1164 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA;
1166 // OpenCL and C++ both have bool, true, false keywords.
1167 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1169 // OpenCL has half keyword
1170 Opts.Half = Opts.OpenCL;
1172 // C++ has wchar_t keyword.
1173 Opts.WChar = Opts.CPlusPlus;
1175 Opts.GNUKeywords = Opts.GNUMode;
1176 Opts.CXXOperatorNames = Opts.CPlusPlus;
1178 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1179 // is specified, or -std is set to a conforming mode.
1180 // Trigraphs are disabled by default in c++1z onwards.
1181 Opts.Trigraphs = !Opts.GNUMode && !Opts.CPlusPlus1z;
1183 Opts.DollarIdents = !Opts.AsmPreprocessor;
1185 // C++1y onwards has sized global deallocation functions.
1186 Opts.SizedDeallocation = Opts.CPlusPlus1y;
1189 /// Attempt to parse a visibility value out of the given argument.
1190 static Visibility parseVisibility(Arg *arg, ArgList &args,
1191 DiagnosticsEngine &diags) {
1192 StringRef value = arg->getValue();
1193 if (value == "default") {
1194 return DefaultVisibility;
1195 } else if (value == "hidden") {
1196 return HiddenVisibility;
1197 } else if (value == "protected") {
1198 // FIXME: diagnose if target does not support protected visibility
1199 return ProtectedVisibility;
1202 diags.Report(diag::err_drv_invalid_value)
1203 << arg->getAsString(args) << value;
1204 return DefaultVisibility;
1207 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) {
1208 auto Arg = Args.getLastArg(OPT_fms_compatibility_version);
1212 // The MSC versioning scheme involves four versioning components:
1218 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value.
1219 // Additionally, the value may be provided in the form of a more readable
1220 // MM.mm.bbbbb.pp version.
1222 // Unfortunately, due to the bit-width limitations, we cannot currently encode
1223 // the value for the patch level.
1225 unsigned VC[4] = {0};
1226 StringRef Value = Arg->getValue();
1227 SmallVector<StringRef, 4> Components;
1229 Value.split(Components, ".", llvm::array_lengthof(VC));
1230 for (unsigned CI = 0,
1231 CE = std::min(Components.size(), llvm::array_lengthof(VC));
1233 if (Components[CI].getAsInteger(10, VC[CI])) {
1234 Diags.Report(diag::err_drv_invalid_value)
1235 << Arg->getAsString(Args) << Value;
1240 // FIXME we cannot encode the patch level
1241 return VC[0] * 10000000 + VC[1] * 100000 + VC[2];
1244 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1245 DiagnosticsEngine &Diags) {
1246 // FIXME: Cleanup per-file based stuff.
1247 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1248 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1249 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1250 #define LANGSTANDARD(id, name, desc, features) \
1251 .Case(name, LangStandard::lang_##id)
1252 #include "clang/Frontend/LangStandards.def"
1253 .Default(LangStandard::lang_unspecified);
1254 if (LangStd == LangStandard::lang_unspecified)
1255 Diags.Report(diag::err_drv_invalid_value)
1256 << A->getAsString(Args) << A->getValue();
1258 // Valid standard, check to make sure language and standard are
1260 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1264 case IK_PreprocessedC:
1265 case IK_PreprocessedObjC:
1266 if (!(Std.isC89() || Std.isC99()))
1267 Diags.Report(diag::err_drv_argument_not_allowed_with)
1268 << A->getAsString(Args) << "C/ObjC";
1272 case IK_PreprocessedCXX:
1273 case IK_PreprocessedObjCXX:
1274 if (!Std.isCPlusPlus())
1275 Diags.Report(diag::err_drv_argument_not_allowed_with)
1276 << A->getAsString(Args) << "C++/ObjC++";
1280 Diags.Report(diag::err_drv_argument_not_allowed_with)
1281 << A->getAsString(Args) << "OpenCL";
1284 if (!Std.isCPlusPlus())
1285 Diags.Report(diag::err_drv_argument_not_allowed_with)
1286 << A->getAsString(Args) << "CUDA";
1294 // -cl-std only applies for OpenCL language standards.
1295 // Override the -std option in this case.
1296 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1297 LangStandard::Kind OpenCLLangStd
1298 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1299 .Case("CL", LangStandard::lang_opencl)
1300 .Case("CL1.1", LangStandard::lang_opencl11)
1301 .Case("CL1.2", LangStandard::lang_opencl12)
1302 .Default(LangStandard::lang_unspecified);
1304 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1305 Diags.Report(diag::err_drv_invalid_value)
1306 << A->getAsString(Args) << A->getValue();
1309 LangStd = OpenCLLangStd;
1312 CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1314 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1315 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1316 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1317 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1318 // name, as it doesn't seem a useful distinction.
1319 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1322 if (Args.hasArg(OPT_fno_operator_names))
1323 Opts.CXXOperatorNames = 0;
1326 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1327 StringRef value = arg->getValue();
1328 if (Opts.ObjCRuntime.tryParse(value))
1329 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1332 if (Args.hasArg(OPT_fobjc_gc_only))
1333 Opts.setGC(LangOptions::GCOnly);
1334 else if (Args.hasArg(OPT_fobjc_gc))
1335 Opts.setGC(LangOptions::HybridGC);
1336 else if (Args.hasArg(OPT_fobjc_arc)) {
1337 Opts.ObjCAutoRefCount = 1;
1338 if (!Opts.ObjCRuntime.allowsARC())
1339 Diags.Report(diag::err_arc_unsupported_on_runtime);
1341 // Only set ObjCARCWeak if ARC is enabled.
1342 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1343 Opts.ObjCARCWeak = 1;
1345 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak();
1348 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1349 Opts.ObjCInferRelatedResultType = 0;
1351 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
1352 Opts.ObjCSubscriptingLegacyRuntime =
1353 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
1356 if (Args.hasArg(OPT_fgnu89_inline))
1359 if (Args.hasArg(OPT_fapple_kext)) {
1360 if (!Opts.CPlusPlus)
1361 Diags.Report(diag::warn_c_kext);
1366 if (Args.hasArg(OPT_print_ivar_layout))
1367 Opts.ObjCGCBitmapPrint = 1;
1368 if (Args.hasArg(OPT_fno_constant_cfstrings))
1369 Opts.NoConstantCFStrings = 1;
1371 if (Args.hasArg(OPT_faltivec))
1374 if (Args.hasArg(OPT_pthread))
1375 Opts.POSIXThreads = 1;
1377 // The value-visibility mode defaults to "default".
1378 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
1379 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
1381 Opts.setValueVisibilityMode(DefaultVisibility);
1384 // The type-visibility mode defaults to the value-visibility mode.
1385 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
1386 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
1388 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
1391 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1392 Opts.InlineVisibilityHidden = 1;
1394 if (Args.hasArg(OPT_ftrapv)) {
1395 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1396 // Set the handler, if one is specified.
1397 Opts.OverflowHandler =
1398 Args.getLastArgValue(OPT_ftrapv_handler);
1400 else if (Args.hasArg(OPT_fwrapv))
1401 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1403 if (Args.hasArg(OPT_trigraphs))
1406 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1407 OPT_fno_dollars_in_identifiers,
1409 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1410 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
1411 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
1412 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
1413 Opts.MSCompatibilityVersion = parseMSCVersion(Args, Diags);
1414 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
1415 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1416 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1417 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1419 if (Args.hasArg(OPT_fno_lax_vector_conversions))
1420 Opts.LaxVectorConversions = 0;
1421 if (Args.hasArg(OPT_fno_threadsafe_statics))
1422 Opts.ThreadsafeStatics = 0;
1423 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1424 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1425 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1426 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1427 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1429 Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1430 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
1431 Opts.Blocks = Args.hasArg(OPT_fblocks);
1432 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1433 Opts.Modules = Args.hasArg(OPT_fmodules);
1434 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
1435 Opts.ModulesDeclUse =
1436 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
1437 Opts.ModulesSearchAll = Opts.Modules &&
1438 !Args.hasArg(OPT_fno_modules_search_all) &&
1439 Args.hasArg(OPT_fmodules_search_all);
1440 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
1441 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
1442 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
1443 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
1444 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1445 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1446 Opts.FormatExtensions = Args.hasArg(OPT_fformat_extensions);
1447 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1448 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
1449 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1450 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation);
1451 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1452 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1453 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1454 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
1455 Opts.InstantiationDepth =
1456 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags);
1458 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
1459 Opts.ConstexprCallDepth =
1460 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
1461 Opts.ConstexprStepLimit =
1462 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
1463 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
1464 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1465 Opts.NumLargeByValueCopy =
1466 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
1467 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1468 Opts.ObjCConstantStringClass =
1469 Args.getLastArgValue(OPT_fconstant_string_class);
1470 Opts.ObjCDefaultSynthProperties =
1471 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
1472 Opts.EncodeExtendedBlockSig =
1473 Args.hasArg(OPT_fencode_extended_block_signature);
1474 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1475 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
1476 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1477 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags);
1478 Opts.Static = Args.hasArg(OPT_static_define);
1479 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1480 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
1481 || Args.hasArg(OPT_fdump_record_layouts);
1482 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1483 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1484 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1485 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1486 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1487 Opts.MRTD = Args.hasArg(OPT_mrtd);
1488 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1489 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1490 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1491 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1492 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
1493 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
1494 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1495 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1497 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
1498 switch (llvm::StringSwitch<unsigned>(A->getValue())
1499 .Case("target", LangOptions::ASMM_Target)
1500 .Case("no", LangOptions::ASMM_Off)
1501 .Case("yes", LangOptions::ASMM_On)
1504 Diags.Report(diag::err_drv_invalid_value)
1505 << "-faddress-space-map-mangling=" << A->getValue();
1507 case LangOptions::ASMM_Target:
1508 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
1510 case LangOptions::ASMM_On:
1511 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
1513 case LangOptions::ASMM_Off:
1514 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
1519 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
1520 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
1521 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
1524 LangOptions::PPTMK_FullGeneralitySingleInheritance)
1526 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
1528 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
1529 .Default(LangOptions::PPTMK_BestCase);
1530 if (InheritanceModel == LangOptions::PPTMK_BestCase)
1531 Diags.Report(diag::err_drv_invalid_value)
1532 << "-fms-memptr-rep=" << A->getValue();
1534 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
1537 // Check if -fopenmp= is specified.
1538 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) {
1539 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue())
1540 .Case("libiomp5", true)
1544 // Record whether the __DEPRECATED define was requested.
1545 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1546 OPT_fno_deprecated_macro,
1549 // FIXME: Eliminate this dependency.
1550 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
1551 OptSize = getOptimizationLevelSize(Args);
1552 Opts.Optimize = Opt != 0;
1553 Opts.OptimizeSize = OptSize != 0;
1555 // This is the __NO_INLINE__ define, which just depends on things like the
1556 // optimization level and -fno-inline, not actually whether the backend has
1557 // inlining enabled.
1558 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
1560 Opts.FastMath = Args.hasArg(OPT_ffast_math);
1561 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only);
1563 Opts.RetainCommentsFromSystemHeaders =
1564 Args.hasArg(OPT_fretain_comments_from_system_headers);
1566 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1569 Diags.Report(diag::err_drv_invalid_value)
1570 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1572 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1573 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
1574 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
1575 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
1578 // Parse -fsanitize= arguments.
1579 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ);
1580 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) {
1581 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to
1582 // efficiently map string values to them. Perform the mapping indirectly:
1583 // convert strings to enumerated values, then switch over the enum to set
1584 // the right bitfield value.
1586 #define SANITIZER(NAME, ID) \
1588 #include "clang/Basic/Sanitizers.def"
1591 switch (llvm::StringSwitch<unsigned>(Sanitizers[I])
1592 #define SANITIZER(NAME, ID) \
1594 #include "clang/Basic/Sanitizers.def"
1595 .Default(Unknown)) {
1596 #define SANITIZER(NAME, ID) \
1598 Opts.Sanitize.ID = true; \
1600 #include "clang/Basic/Sanitizers.def"
1603 Diags.Report(diag::err_drv_invalid_value)
1604 << "-fsanitize=" << Sanitizers[I];
1610 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1611 FileManager &FileMgr,
1612 DiagnosticsEngine &Diags) {
1613 using namespace options;
1614 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1615 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1616 if (const Arg *A = Args.getLastArg(OPT_token_cache))
1617 Opts.TokenCache = A->getValue();
1619 Opts.TokenCache = Opts.ImplicitPTHInclude;
1620 Opts.UsePredefines = !Args.hasArg(OPT_undef);
1621 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1622 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1624 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1625 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1626 ie = Args.filtered_end(); it != ie; ++it) {
1628 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
1631 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1632 StringRef Value(A->getValue());
1633 size_t Comma = Value.find(',');
1635 unsigned EndOfLine = 0;
1637 if (Comma == StringRef::npos ||
1638 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1639 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1640 Diags.Report(diag::err_drv_preamble_format);
1642 Opts.PrecompiledPreambleBytes.first = Bytes;
1643 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1647 // Add macros from the command line.
1648 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1649 ie = Args.filtered_end(); it != ie; ++it) {
1650 if ((*it)->getOption().matches(OPT_D))
1651 Opts.addMacroDef((*it)->getValue());
1653 Opts.addMacroUndef((*it)->getValue());
1656 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1658 // Add the ordered list of -includes.
1659 for (arg_iterator it = Args.filtered_begin(OPT_include),
1660 ie = Args.filtered_end(); it != ie; ++it) {
1662 Opts.Includes.push_back(A->getValue());
1665 for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1666 ie = Args.filtered_end(); it != ie; ++it) {
1668 Opts.ChainedIncludes.push_back(A->getValue());
1671 // Include 'altivec.h' if -faltivec option present
1672 if (Args.hasArg(OPT_faltivec))
1673 Opts.Includes.push_back("altivec.h");
1675 for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1676 ie = Args.filtered_end(); it != ie; ++it) {
1678 std::pair<StringRef,StringRef> Split =
1679 StringRef(A->getValue()).split(';');
1681 if (Split.second.empty()) {
1682 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1686 Opts.addRemappedFile(Split.first, Split.second);
1689 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1690 StringRef Name = A->getValue();
1691 unsigned Library = llvm::StringSwitch<unsigned>(Name)
1692 .Case("libc++", ARCXX_libcxx)
1693 .Case("libstdc++", ARCXX_libstdcxx)
1694 .Case("none", ARCXX_nolib)
1697 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1699 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1703 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1705 frontend::ActionKind Action) {
1706 using namespace options;
1709 case frontend::ASTDeclList:
1710 case frontend::ASTDump:
1711 case frontend::ASTPrint:
1712 case frontend::ASTView:
1713 case frontend::EmitAssembly:
1714 case frontend::EmitBC:
1715 case frontend::EmitHTML:
1716 case frontend::EmitLLVM:
1717 case frontend::EmitLLVMOnly:
1718 case frontend::EmitCodeGenOnly:
1719 case frontend::EmitObj:
1720 case frontend::FixIt:
1721 case frontend::GenerateModule:
1722 case frontend::GeneratePCH:
1723 case frontend::GeneratePTH:
1724 case frontend::ParseSyntaxOnly:
1725 case frontend::ModuleFileInfo:
1726 case frontend::VerifyPCH:
1727 case frontend::PluginAction:
1728 case frontend::PrintDeclContext:
1729 case frontend::RewriteObjC:
1730 case frontend::RewriteTest:
1731 case frontend::RunAnalysis:
1732 case frontend::MigrateSource:
1736 case frontend::DumpRawTokens:
1737 case frontend::DumpTokens:
1738 case frontend::InitOnly:
1739 case frontend::PrintPreamble:
1740 case frontend::PrintPreprocessedInput:
1741 case frontend::RewriteMacros:
1742 case frontend::RunPreprocessorOnly:
1743 Opts.ShowCPP = !Args.hasArg(OPT_dM);
1747 Opts.ShowComments = Args.hasArg(OPT_C);
1748 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1749 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1750 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1751 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
1754 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1755 using namespace options;
1756 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1757 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1758 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
1759 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
1760 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1761 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1763 // Use the default target triple if unspecified.
1764 if (Opts.Triple.empty())
1765 Opts.Triple = llvm::sys::getDefaultTargetTriple();
1768 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1769 const char *const *ArgBegin,
1770 const char *const *ArgEnd,
1771 DiagnosticsEngine &Diags) {
1772 bool Success = true;
1774 // Parse the arguments.
1775 std::unique_ptr<OptTable> Opts(createDriverOptTable());
1776 const unsigned IncludedFlagsBitmask = options::CC1Option;
1777 unsigned MissingArgIndex, MissingArgCount;
1778 std::unique_ptr<InputArgList> Args(
1779 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount,
1780 IncludedFlagsBitmask));
1782 // Check for missing argument error.
1783 if (MissingArgCount) {
1784 Diags.Report(diag::err_drv_missing_argument)
1785 << Args->getArgString(MissingArgIndex) << MissingArgCount;
1789 // Issue errors on unknown arguments.
1790 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1791 ie = Args->filtered_end(); it != ie; ++it) {
1792 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1796 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success;
1797 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
1798 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1799 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
1801 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args);
1802 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1803 // FIXME: We shouldn't have to pass the DashX option around here
1804 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1805 ParseTargetArgs(Res.getTargetOpts(), *Args);
1806 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags,
1807 Res.getTargetOpts()) && Success;
1808 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1809 if (DashX != IK_AST && DashX != IK_LLVM_IR) {
1810 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
1811 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
1812 Res.getLangOpts()->ObjCExceptions = 1;
1814 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1815 // PCH file and find the original header name. Remove the need to do that in
1816 // ParsePreprocessorArgs and remove the FileManager
1817 // parameters from the function and the "FileManager.h" #include.
1818 FileManager FileMgr(Res.getFileSystemOpts());
1819 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1820 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args,
1821 Res.getFrontendOpts().ProgramAction);
1827 class ModuleSignature {
1828 SmallVector<uint64_t, 16> Data;
1833 ModuleSignature() : CurBit(0), CurValue(0) { }
1835 void add(uint64_t Value, unsigned Bits);
1836 void add(StringRef Value);
1839 llvm::APInt getAsInteger() const;
1843 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
1844 CurValue |= Value << CurBit;
1845 if (CurBit + NumBits < 64) {
1850 // Add the current word.
1851 Data.push_back(CurValue);
1854 CurValue = Value >> (64-CurBit);
1857 CurBit = (CurBit+NumBits) & 63;
1860 void ModuleSignature::flush() {
1864 Data.push_back(CurValue);
1869 void ModuleSignature::add(StringRef Value) {
1870 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
1874 llvm::APInt ModuleSignature::getAsInteger() const {
1875 return llvm::APInt(Data.size() * 64, Data);
1878 std::string CompilerInvocation::getModuleHash() const {
1879 // Note: For QoI reasons, the things we use as a hash here should all be
1880 // dumped via the -module-info flag.
1881 using llvm::hash_code;
1882 using llvm::hash_value;
1883 using llvm::hash_combine;
1885 // Start the signature with the compiler version.
1886 // FIXME: We'd rather use something more cryptographically sound than
1887 // CityHash, but this will do for now.
1888 hash_code code = hash_value(getClangFullRepositoryVersion());
1890 // Extend the signature with the language options
1891 #define LANGOPT(Name, Bits, Default, Description) \
1892 code = hash_combine(code, LangOpts->Name);
1893 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1894 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
1895 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
1896 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
1897 #include "clang/Basic/LangOptions.def"
1899 // Extend the signature with the target options.
1900 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
1902 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
1903 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
1905 // Extend the signature with preprocessor options.
1906 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
1907 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
1908 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
1910 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
1911 I = getPreprocessorOpts().Macros.begin(),
1912 IEnd = getPreprocessorOpts().Macros.end();
1914 // If we're supposed to ignore this macro for the purposes of modules,
1915 // don't put it into the hash.
1916 if (!hsOpts.ModulesIgnoreMacros.empty()) {
1917 // Check whether we're ignoring this macro.
1918 StringRef MacroDef = I->first;
1919 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first))
1923 code = hash_combine(code, I->first, I->second);
1926 // Extend the signature with the sysroot.
1927 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes,
1928 hsOpts.UseStandardSystemIncludes,
1929 hsOpts.UseStandardCXXIncludes,
1931 code = hash_combine(code, hsOpts.ResourceDir);
1933 // Extend the signature with the user build path.
1934 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
1936 // Darwin-specific hack: if we have a sysroot, use the contents and
1937 // modification time of
1938 // $sysroot/System/Library/CoreServices/SystemVersion.plist
1939 // as part of the module hash.
1940 if (!hsOpts.Sysroot.empty()) {
1941 SmallString<128> systemVersionFile;
1942 systemVersionFile += hsOpts.Sysroot;
1943 llvm::sys::path::append(systemVersionFile, "System");
1944 llvm::sys::path::append(systemVersionFile, "Library");
1945 llvm::sys::path::append(systemVersionFile, "CoreServices");
1946 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist");
1948 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer =
1949 llvm::MemoryBuffer::getFile(systemVersionFile.str());
1951 code = hash_combine(code, buffer.get()->getBuffer());
1953 struct stat statBuf;
1954 if (stat(systemVersionFile.c_str(), &statBuf) == 0)
1955 code = hash_combine(code, statBuf.st_mtime);
1959 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
1964 template<typename IntTy>
1965 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
1967 DiagnosticsEngine *Diags) {
1968 IntTy Res = Default;
1969 if (Arg *A = Args.getLastArg(Id)) {
1970 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
1972 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
1980 // Declared in clang/Frontend/Utils.h.
1981 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
1982 DiagnosticsEngine *Diags) {
1983 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
1986 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
1988 DiagnosticsEngine *Diags) {
1989 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
1992 void BuryPointer(const void *Ptr) {
1993 // This function may be called only a small fixed amount of times per each
1994 // invocation, otherwise we do actually have a leak which we want to report.
1995 // If this function is called more than kGraveYardMaxSize times, the pointers
1996 // will not be properly buried and a leak detector will report a leak, which
1997 // is what we want in such case.
1998 static const size_t kGraveYardMaxSize = 16;
1999 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2000 static std::atomic<unsigned> GraveYardSize;
2001 unsigned Idx = GraveYardSize++;
2002 if (Idx >= kGraveYardMaxSize)
2004 GraveYard[Idx] = Ptr;
2007 IntrusiveRefCntPtr<vfs::FileSystem>
2008 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2009 DiagnosticsEngine &Diags) {
2010 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2011 return vfs::getRealFileSystem();
2013 IntrusiveRefCntPtr<vfs::OverlayFileSystem>
2014 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem()));
2015 // earlier vfs files are on the bottom
2016 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2017 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2018 llvm::MemoryBuffer::getFile(File);
2020 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2021 return IntrusiveRefCntPtr<vfs::FileSystem>();
2024 IntrusiveRefCntPtr<vfs::FileSystem> FS =
2025 vfs::getVFSFromYAML(Buffer->release(), /*DiagHandler*/ nullptr);
2027 Diags.Report(diag::err_invalid_vfs_overlay) << File;
2028 return IntrusiveRefCntPtr<vfs::FileSystem>();
2030 Overlay->pushOverlay(FS);
2034 } // end namespace clang