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/Diagnostic.h"
12 #include "clang/Basic/FileManager.h"
13 #include "clang/Basic/Version.h"
14 #include "clang/Driver/Arg.h"
15 #include "clang/Driver/ArgList.h"
16 #include "clang/Driver/DriverDiagnostic.h"
17 #include "clang/Driver/OptTable.h"
18 #include "clang/Driver/Option.h"
19 #include "clang/Driver/Options.h"
20 #include "clang/Frontend/LangStandard.h"
21 #include "clang/Lex/HeaderSearchOptions.h"
22 #include "clang/Serialization/ASTReader.h"
23 #include "llvm/ADT/Hashing.h"
24 #include "llvm/ADT/OwningPtr.h"
25 #include "llvm/ADT/SmallVector.h"
26 #include "llvm/ADT/StringExtras.h"
27 #include "llvm/ADT/StringSwitch.h"
28 #include "llvm/ADT/Triple.h"
29 #include "llvm/Support/ErrorHandling.h"
30 #include "llvm/Support/Host.h"
31 #include "llvm/Support/Path.h"
32 #include "llvm/Support/system_error.h"
33 using namespace clang;
35 //===----------------------------------------------------------------------===//
37 //===----------------------------------------------------------------------===//
39 CompilerInvocationBase::CompilerInvocationBase()
40 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
41 DiagnosticOpts(new DiagnosticOptions()),
42 HeaderSearchOpts(new HeaderSearchOptions()),
43 PreprocessorOpts(new PreprocessorOptions()) {}
45 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
46 : RefCountedBase<CompilerInvocation>(),
47 LangOpts(new LangOptions(*X.getLangOpts())),
48 TargetOpts(new TargetOptions(X.getTargetOpts())),
49 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
50 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
51 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
53 //===----------------------------------------------------------------------===//
54 // Deserialization (from args)
55 //===----------------------------------------------------------------------===//
57 using namespace clang::driver;
58 using namespace clang::driver::options;
62 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
63 DiagnosticsEngine &Diags) {
64 unsigned DefaultOpt = 0;
65 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
68 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
69 if (A->getOption().matches(options::OPT_O0))
72 if (A->getOption().matches(options::OPT_Ofast))
75 assert (A->getOption().matches(options::OPT_O));
77 StringRef S(A->getValue());
78 if (S == "s" || S == "z" || S.empty())
81 return Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
87 static unsigned getOptimizationLevelSize(ArgList &Args) {
88 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
89 if (A->getOption().matches(options::OPT_O)) {
90 switch (A->getValue()[0]) {
103 static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) {
104 for (arg_iterator I = Args.filtered_begin(OPT_W_Group),
105 E = Args.filtered_end(); I != E; ++I) {
107 // If the argument is a pure flag, add its name (minus the "W" at the beginning)
108 // to the warning list. Else, add its value (for the OPT_W case).
109 if (A->getOption().getKind() == Option::FlagClass) {
110 Warnings.push_back(A->getOption().getName().substr(1));
112 for (unsigned Idx = 0, End = A->getNumValues();
114 StringRef V = A->getValue(Idx);
115 // "-Wl," and such are not warning options.
116 // FIXME: Should be handled by putting these in separate flags.
117 if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,"))
120 Warnings.push_back(V);
126 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
127 DiagnosticsEngine &Diags) {
128 using namespace options;
130 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
131 StringRef Name = A->getValue();
132 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
133 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
134 .Case(CMDFLAG, NAME##Model)
135 #include "clang/StaticAnalyzer/Core/Analyses.def"
137 if (Value == NumStores) {
138 Diags.Report(diag::err_drv_invalid_value)
139 << A->getAsString(Args) << Name;
142 Opts.AnalysisStoreOpt = Value;
146 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
147 StringRef Name = A->getValue();
148 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
149 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
150 .Case(CMDFLAG, NAME##Model)
151 #include "clang/StaticAnalyzer/Core/Analyses.def"
152 .Default(NumConstraints);
153 if (Value == NumConstraints) {
154 Diags.Report(diag::err_drv_invalid_value)
155 << A->getAsString(Args) << Name;
158 Opts.AnalysisConstraintsOpt = Value;
162 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
163 StringRef Name = A->getValue();
164 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
165 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
166 .Case(CMDFLAG, PD_##NAME)
167 #include "clang/StaticAnalyzer/Core/Analyses.def"
168 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
169 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
170 Diags.Report(diag::err_drv_invalid_value)
171 << A->getAsString(Args) << Name;
174 Opts.AnalysisDiagOpt = Value;
178 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
179 StringRef Name = A->getValue();
180 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
181 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
183 #include "clang/StaticAnalyzer/Core/Analyses.def"
184 .Default(NumPurgeModes);
185 if (Value == NumPurgeModes) {
186 Diags.Report(diag::err_drv_invalid_value)
187 << A->getAsString(Args) << Name;
190 Opts.AnalysisPurgeOpt = Value;
194 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
195 StringRef Name = A->getValue();
196 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
197 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
199 #include "clang/StaticAnalyzer/Core/Analyses.def"
200 .Default(NumInliningModes);
201 if (Value == NumInliningModes) {
202 Diags.Report(diag::err_drv_invalid_value)
203 << A->getAsString(Args) << Name;
206 Opts.InliningMode = Value;
210 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
211 Opts.visualizeExplodedGraphWithGraphViz =
212 Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
213 Opts.visualizeExplodedGraphWithUbiGraph =
214 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
215 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
216 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
217 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
218 Opts.AnalyzeNestedBlocks =
219 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
220 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume);
221 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
222 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
223 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
224 Opts.maxBlockVisitOnPath = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
225 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
226 Opts.InlineMaxStackDepth =
227 Args.getLastArgIntValue(OPT_analyzer_inline_max_stack_depth,
228 Opts.InlineMaxStackDepth, Diags);
230 Opts.CheckersControlList.clear();
231 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
232 OPT_analyzer_disable_checker),
233 ie = Args.filtered_end(); it != ie; ++it) {
236 bool enable = (A->getOption().getID() == OPT_analyzer_checker);
237 // We can have a list of comma separated checker names, e.g:
238 // '-analyzer-checker=cocoa,unix'
239 StringRef checkerList = A->getValue();
240 SmallVector<StringRef, 4> checkers;
241 checkerList.split(checkers, ",");
242 for (unsigned i = 0, e = checkers.size(); i != e; ++i)
243 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
246 // Go through the analyzer configuration options.
247 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config),
248 ie = Args.filtered_end(); it != ie; ++it) {
251 // We can have a list of comma separated config names, e.g:
252 // '-analyzer-config key1=val1,key2=val2'
253 StringRef configList = A->getValue();
254 SmallVector<StringRef, 4> configVals;
255 configList.split(configVals, ",");
256 for (unsigned i = 0, e = configVals.size(); i != e; ++i) {
258 llvm::tie(key, val) = configVals[i].split("=");
260 Diags.Report(SourceLocation(),
261 diag::err_analyzer_config_no_value) << configVals[i];
265 if (val.find('=') != StringRef::npos) {
266 Diags.Report(SourceLocation(),
267 diag::err_analyzer_config_multiple_values)
272 Opts.Config[key] = val;
279 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
280 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
281 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
285 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
286 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
287 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments);
290 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
291 DiagnosticsEngine &Diags) {
292 using namespace options;
295 unsigned OptLevel = getOptimizationLevel(Args, IK, Diags);
297 Diags.Report(diag::err_drv_invalid_value)
298 << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel;
302 Opts.OptimizationLevel = OptLevel;
304 // We must always run at least the always inlining pass.
306 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
307 : CodeGenOptions::OnlyAlwaysInlining);
308 // -fno-inline-functions overrides OptimizationLevel > 1.
309 Opts.NoInline = Args.hasArg(OPT_fno_inline);
310 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ?
311 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining());
313 if (Args.hasArg(OPT_gline_tables_only)) {
314 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly);
315 } else if (Args.hasArg(OPT_g_Flag)) {
316 if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true))
317 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo);
319 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo);
321 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
322 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
324 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
325 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
326 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
327 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
328 OPT_fuse_register_sized_bitfield_access);
329 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
330 Opts.StructPathTBAA = Args.hasArg(OPT_struct_path_tbaa);
331 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
332 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
333 Opts.NoCommon = Args.hasArg(OPT_fno_common);
334 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
335 Opts.OptimizeSize = getOptimizationLevelSize(Args);
336 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
337 Args.hasArg(OPT_ffreestanding));
338 Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
339 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
341 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
342 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
343 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
344 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
345 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
346 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
347 Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
348 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
349 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
350 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
351 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
352 Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
353 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
354 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
355 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
356 Args.hasArg(OPT_cl_finite_math_only)||
357 Args.hasArg(OPT_cl_fast_relaxed_math));
358 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
359 Args.hasArg(OPT_cl_finite_math_only)||
360 Args.hasArg(OPT_cl_fast_relaxed_math));
361 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
362 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
363 Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
364 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
365 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
366 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
367 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
368 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
369 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
370 Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm);
371 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
372 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
373 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
374 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
375 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
376 Args.hasArg(OPT_cl_fast_relaxed_math);
377 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
378 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
379 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
380 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
382 Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
383 Opts.DataSections = Args.hasArg(OPT_fdata_sections);
385 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
386 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
387 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover);
389 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
390 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
391 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
392 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
393 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
394 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
395 Opts.CoverageNoFunctionNamesInData =
396 Args.hasArg(OPT_coverage_no_function_names_in_data);
397 if (Args.hasArg(OPT_coverage_version_EQ)) {
398 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
399 if (CoverageVersion.size() != 4) {
400 Diags.Report(diag::err_drv_invalid_value)
401 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
404 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
409 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
410 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
411 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
412 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
413 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
414 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist);
415 Opts.SanitizeMemoryTrackOrigins =
416 Args.hasArg(OPT_fsanitize_memory_track_origins);
417 Opts.SanitizeAddressZeroBaseShadow =
418 Args.hasArg(OPT_fsanitize_address_zero_base_shadow);
419 Opts.SanitizeUndefinedTrapOnError =
420 Args.hasArg(OPT_fsanitize_undefined_trap_on_error);
422 Args.getLastArgIntValue(OPT_stack_protector_buffer_size, 8, Diags);
423 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
424 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
425 StringRef Val = A->getValue();
426 unsigned StackAlignment = Opts.StackAlignment;
427 Val.getAsInteger(10, StackAlignment);
428 Opts.StackAlignment = StackAlignment;
431 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
432 StringRef Name = A->getValue();
433 unsigned Method = llvm::StringSwitch<unsigned>(Name)
434 .Case("legacy", CodeGenOptions::Legacy)
435 .Case("non-legacy", CodeGenOptions::NonLegacy)
436 .Case("mixed", CodeGenOptions::Mixed)
439 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
442 Opts.setObjCDispatchMethod(
443 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
447 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
448 StringRef Name = A->getValue();
449 unsigned Model = llvm::StringSwitch<unsigned>(Name)
450 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
451 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
452 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
453 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
456 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
459 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
463 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
464 StringRef Val = A->getValue();
466 Opts.setFPContractMode(CodeGenOptions::FPC_Fast);
467 else if (Val == "on")
468 Opts.setFPContractMode(CodeGenOptions::FPC_On);
469 else if (Val == "off")
470 Opts.setFPContractMode(CodeGenOptions::FPC_Off);
472 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
478 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
480 using namespace options;
481 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
482 Opts.Targets = Args.getAllArgValues(OPT_MT);
483 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
484 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
485 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
486 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
487 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
488 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
491 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
492 DiagnosticsEngine *Diags) {
493 using namespace options;
496 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
497 Opts.DiagnosticSerializationFile =
498 Args.getLastArgValue(OPT_diagnostic_serialized_file);
499 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
500 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
501 Opts.Pedantic = Args.hasArg(OPT_pedantic);
502 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
503 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
504 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
505 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
508 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
509 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
510 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
512 // Default behavior is to not to show note include stacks.
513 Opts.ShowNoteIncludeStack = false;
514 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
515 OPT_fno_diagnostics_show_note_include_stack))
516 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
517 Opts.ShowNoteIncludeStack = true;
519 StringRef ShowOverloads =
520 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
521 if (ShowOverloads == "best")
522 Opts.setShowOverloads(Ovl_Best);
523 else if (ShowOverloads == "all")
524 Opts.setShowOverloads(Ovl_All);
528 Diags->Report(diag::err_drv_invalid_value)
529 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
533 StringRef ShowCategory =
534 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
535 if (ShowCategory == "none")
536 Opts.ShowCategories = 0;
537 else if (ShowCategory == "id")
538 Opts.ShowCategories = 1;
539 else if (ShowCategory == "name")
540 Opts.ShowCategories = 2;
544 Diags->Report(diag::err_drv_invalid_value)
545 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
550 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
551 if (Format == "clang")
552 Opts.setFormat(DiagnosticOptions::Clang);
553 else if (Format == "msvc")
554 Opts.setFormat(DiagnosticOptions::Msvc);
555 else if (Format == "vi")
556 Opts.setFormat(DiagnosticOptions::Vi);
560 Diags->Report(diag::err_drv_invalid_value)
561 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
565 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
566 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
567 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
568 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
569 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
570 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
571 Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
572 Opts.MacroBacktraceLimit
573 = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
574 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
575 Opts.TemplateBacktraceLimit
576 = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
577 DiagnosticOptions::DefaultTemplateBacktraceLimit,
579 Opts.ConstexprBacktraceLimit
580 = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit,
581 DiagnosticOptions::DefaultConstexprBacktraceLimit,
583 Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
584 DiagnosticOptions::DefaultTabStop, Diags);
585 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
586 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
588 Diags->Report(diag::warn_ignoring_ftabstop_value)
589 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
591 Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
592 addWarningArgs(Args, Opts.Warnings);
597 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
598 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
601 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
602 DiagnosticsEngine &Diags) {
603 using namespace options;
604 Opts.ProgramAction = frontend::ParseSyntaxOnly;
605 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
606 switch (A->getOption().getID()) {
608 llvm_unreachable("Invalid option in group!");
610 Opts.ProgramAction = frontend::ASTDeclList; break;
612 Opts.ProgramAction = frontend::ASTDump; break;
613 case OPT_ast_dump_xml:
614 Opts.ProgramAction = frontend::ASTDumpXML; break;
616 Opts.ProgramAction = frontend::ASTPrint; break;
618 Opts.ProgramAction = frontend::ASTView; break;
619 case OPT_dump_raw_tokens:
620 Opts.ProgramAction = frontend::DumpRawTokens; break;
621 case OPT_dump_tokens:
622 Opts.ProgramAction = frontend::DumpTokens; break;
624 Opts.ProgramAction = frontend::EmitAssembly; break;
625 case OPT_emit_llvm_bc:
626 Opts.ProgramAction = frontend::EmitBC; break;
628 Opts.ProgramAction = frontend::EmitHTML; break;
630 Opts.ProgramAction = frontend::EmitLLVM; break;
631 case OPT_emit_llvm_only:
632 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
633 case OPT_emit_codegen_only:
634 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
636 Opts.ProgramAction = frontend::EmitObj; break;
638 Opts.FixItSuffix = A->getValue();
641 Opts.ProgramAction = frontend::FixIt; break;
642 case OPT_emit_module:
643 Opts.ProgramAction = frontend::GenerateModule; break;
645 Opts.ProgramAction = frontend::GeneratePCH; break;
647 Opts.ProgramAction = frontend::GeneratePTH; break;
649 Opts.ProgramAction = frontend::InitOnly; break;
650 case OPT_fsyntax_only:
651 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
652 case OPT_module_file_info:
653 Opts.ProgramAction = frontend::ModuleFileInfo; break;
654 case OPT_print_decl_contexts:
655 Opts.ProgramAction = frontend::PrintDeclContext; break;
656 case OPT_print_preamble:
657 Opts.ProgramAction = frontend::PrintPreamble; break;
659 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
660 case OPT_rewrite_macros:
661 Opts.ProgramAction = frontend::RewriteMacros; break;
662 case OPT_rewrite_objc:
663 Opts.ProgramAction = frontend::RewriteObjC; break;
664 case OPT_rewrite_test:
665 Opts.ProgramAction = frontend::RewriteTest; break;
667 Opts.ProgramAction = frontend::RunAnalysis; break;
669 Opts.ProgramAction = frontend::MigrateSource; break;
671 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
675 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
676 Opts.Plugins.push_back(A->getValue(0));
677 Opts.ProgramAction = frontend::PluginAction;
678 Opts.ActionName = A->getValue();
680 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
681 end = Args.filtered_end(); it != end; ++it) {
682 if ((*it)->getValue(0) == Opts.ActionName)
683 Opts.PluginArgs.push_back((*it)->getValue(1));
687 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
688 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
689 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
690 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
691 end = Args.filtered_end(); it != end; ++it) {
692 if ((*it)->getValue(0) == Opts.AddPluginActions[i])
693 Opts.AddPluginArgs[i].push_back((*it)->getValue(1));
697 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
698 Opts.CodeCompletionAt =
699 ParsedSourceLocation::FromString(A->getValue());
700 if (Opts.CodeCompletionAt.FileName.empty())
701 Diags.Report(diag::err_drv_invalid_value)
702 << A->getAsString(Args) << A->getValue();
704 Opts.DisableFree = Args.hasArg(OPT_disable_free);
706 Opts.OutputFile = Args.getLastArgValue(OPT_o);
707 Opts.Plugins = Args.getAllArgValues(OPT_load);
708 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
709 Opts.ShowHelp = Args.hasArg(OPT_help);
710 Opts.ShowStats = Args.hasArg(OPT_print_stats);
711 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
712 Opts.ShowVersion = Args.hasArg(OPT_version);
713 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
714 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
715 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
716 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
717 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
718 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
719 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
720 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
721 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
723 Opts.CodeCompleteOpts.IncludeMacros
724 = Args.hasArg(OPT_code_completion_macros);
725 Opts.CodeCompleteOpts.IncludeCodePatterns
726 = Args.hasArg(OPT_code_completion_patterns);
727 Opts.CodeCompleteOpts.IncludeGlobals
728 = !Args.hasArg(OPT_no_code_completion_globals);
729 Opts.CodeCompleteOpts.IncludeBriefComments
730 = Args.hasArg(OPT_code_completion_brief_comments);
732 Opts.OverrideRecordLayoutsFile
733 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
734 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
736 OPT_arcmt_migrate)) {
737 switch (A->getOption().getID()) {
739 llvm_unreachable("missed a case");
740 case OPT_arcmt_check:
741 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
743 case OPT_arcmt_modify:
744 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
746 case OPT_arcmt_migrate:
747 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
751 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
752 Opts.ARCMTMigrateReportOut
753 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
754 Opts.ARCMTMigrateEmitARCErrors
755 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
757 if (Args.hasArg(OPT_objcmt_migrate_literals))
758 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
759 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
760 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
762 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
763 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
764 Diags.Report(diag::err_drv_argument_not_allowed_with)
765 << "ARC migration" << "ObjC migration";
768 InputKind DashX = IK_None;
769 if (const Arg *A = Args.getLastArg(OPT_x)) {
770 DashX = llvm::StringSwitch<InputKind>(A->getValue())
772 .Case("cl", IK_OpenCL)
773 .Case("cuda", IK_CUDA)
775 .Case("objective-c", IK_ObjC)
776 .Case("objective-c++", IK_ObjCXX)
777 .Case("cpp-output", IK_PreprocessedC)
778 .Case("assembler-with-cpp", IK_Asm)
779 .Case("c++-cpp-output", IK_PreprocessedCXX)
780 .Case("objective-c-cpp-output", IK_PreprocessedObjC)
781 .Case("objc-cpp-output", IK_PreprocessedObjC)
782 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
783 .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
784 .Case("c-header", IK_C)
785 .Case("cl-header", IK_OpenCL)
786 .Case("objective-c-header", IK_ObjC)
787 .Case("c++-header", IK_CXX)
788 .Case("objective-c++-header", IK_ObjCXX)
789 .Cases("ast", "pcm", IK_AST)
790 .Case("ir", IK_LLVM_IR)
792 if (DashX == IK_None)
793 Diags.Report(diag::err_drv_invalid_value)
794 << A->getAsString(Args) << A->getValue();
797 // '-' is the default input if none is given.
798 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
801 Inputs.push_back("-");
802 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
803 InputKind IK = DashX;
805 IK = FrontendOptions::getInputKindForExtension(
806 StringRef(Inputs[i]).rsplit('.').second);
807 // FIXME: Remove this hack.
811 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
817 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
819 llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
822 P.eraseComponent(); // Remove /clang from foo/bin/clang
823 P.eraseComponent(); // Remove /bin from foo/bin
825 // Get foo/lib/clang/<version>/include
826 P.appendComponent("lib");
827 P.appendComponent("clang");
828 P.appendComponent(CLANG_VERSION_STRING);
834 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
835 using namespace options;
836 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
837 Opts.Verbose = Args.hasArg(OPT_v);
838 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
839 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
840 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
841 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
842 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
843 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
844 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path);
845 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
846 Opts.ModuleCachePruneInterval
847 = Args.getLastArgIntValue(OPT_fmodules_prune_interval, 7*24*60*60);
848 Opts.ModuleCachePruneAfter
849 = Args.getLastArgIntValue(OPT_fmodules_prune_after, 31*24*60*60);
850 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro),
851 ie = Args.filtered_end(); it != ie; ++it) {
852 StringRef MacroDef = (*it)->getValue();
853 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first);
856 // Add -I..., -F..., and -index-header-map options in order.
857 bool IsIndexHeaderMap = false;
858 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
859 OPT_index_header_map),
860 ie = Args.filtered_end(); it != ie; ++it) {
861 if ((*it)->getOption().matches(OPT_index_header_map)) {
862 // -index-header-map applies to the next -I or -F.
863 IsIndexHeaderMap = true;
867 frontend::IncludeDirGroup Group
868 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
870 Opts.AddPath((*it)->getValue(), Group,
871 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
872 IsIndexHeaderMap = false;
875 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
876 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
877 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
878 OPT_iwithprefixbefore),
879 ie = Args.filtered_end(); it != ie; ++it) {
881 if (A->getOption().matches(OPT_iprefix))
882 Prefix = A->getValue();
883 else if (A->getOption().matches(OPT_iwithprefix))
884 Opts.AddPath(Prefix.str() + A->getValue(),
885 frontend::After, false, true);
887 Opts.AddPath(Prefix.str() + A->getValue(),
888 frontend::Angled, false, true);
891 for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
892 ie = Args.filtered_end(); it != ie; ++it)
893 Opts.AddPath((*it)->getValue(), frontend::After, false, true);
894 for (arg_iterator it = Args.filtered_begin(OPT_iquote),
895 ie = Args.filtered_end(); it != ie; ++it)
896 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true);
897 for (arg_iterator it = Args.filtered_begin(OPT_isystem,
898 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
899 Opts.AddPath((*it)->getValue(), frontend::System, false,
900 !(*it)->getOption().matches(OPT_iwithsysroot));
901 for (arg_iterator it = Args.filtered_begin(OPT_iframework),
902 ie = Args.filtered_end(); it != ie; ++it)
903 Opts.AddPath((*it)->getValue(), frontend::System, true, true);
905 // Add the paths for the various language specific isystem flags.
906 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
907 ie = Args.filtered_end(); it != ie; ++it)
908 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true);
909 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
910 ie = Args.filtered_end(); it != ie; ++it)
911 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true);
912 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
913 ie = Args.filtered_end(); it != ie; ++it)
914 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true);
915 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
916 ie = Args.filtered_end(); it != ie; ++it)
917 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true);
919 // Add the internal paths from a driver that detects standard include paths.
920 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
921 OPT_internal_externc_isystem),
922 E = Args.filtered_end();
924 frontend::IncludeDirGroup Group = frontend::System;
925 if ((*I)->getOption().matches(OPT_internal_externc_isystem))
926 Group = frontend::ExternCSystem;
927 Opts.AddPath((*I)->getValue(), Group, false, true);
930 // Add the path prefixes which are implicitly treated as being system headers.
931 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix,
932 OPT_ino_system_prefix),
933 E = Args.filtered_end();
935 Opts.AddSystemHeaderPrefix((*I)->getValue(),
936 (*I)->getOption().matches(OPT_isystem_prefix));
939 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
940 LangStandard::Kind LangStd) {
941 // Set some properties which depend solely on the input kind; it would be nice
942 // to move these to the language standard, and have the driver resolve the
943 // input kind + language standard.
945 Opts.AsmPreprocessor = 1;
946 } else if (IK == IK_ObjC ||
948 IK == IK_PreprocessedObjC ||
949 IK == IK_PreprocessedObjCXX) {
950 Opts.ObjC1 = Opts.ObjC2 = 1;
953 if (LangStd == LangStandard::lang_unspecified) {
954 // Based on the base language, pick one.
959 llvm_unreachable("Invalid input kind!");
961 LangStd = LangStandard::lang_opencl;
964 LangStd = LangStandard::lang_cuda;
968 case IK_PreprocessedC:
970 case IK_PreprocessedObjC:
971 LangStd = LangStandard::lang_gnu99;
974 case IK_PreprocessedCXX:
976 case IK_PreprocessedObjCXX:
977 LangStd = LangStandard::lang_gnucxx98;
982 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
983 Opts.LineComment = Std.hasLineComments();
984 Opts.C99 = Std.isC99();
985 Opts.C11 = Std.isC11();
986 Opts.CPlusPlus = Std.isCPlusPlus();
987 Opts.CPlusPlus11 = Std.isCPlusPlus11();
988 Opts.CPlusPlus1y = Std.isCPlusPlus1y();
989 Opts.Digraphs = Std.hasDigraphs();
990 Opts.GNUMode = Std.isGNUMode();
991 Opts.GNUInline = !Std.isC99();
992 Opts.HexFloats = Std.hasHexFloats();
993 Opts.ImplicitInt = Std.hasImplicitInt();
995 // Set OpenCL Version.
996 if (LangStd == LangStandard::lang_opencl) {
998 Opts.OpenCLVersion = 100;
1000 else if (LangStd == LangStandard::lang_opencl11) {
1002 Opts.OpenCLVersion = 110;
1004 else if (LangStd == LangStandard::lang_opencl12) {
1006 Opts.OpenCLVersion = 120;
1009 // OpenCL has some additional defaults.
1012 Opts.CXXOperatorNames = 1;
1013 Opts.LaxVectorConversions = 0;
1014 Opts.DefaultFPContract = 1;
1015 Opts.NativeHalfType = 1;
1018 if (LangStd == LangStandard::lang_cuda)
1021 // OpenCL and C++ both have bool, true, false keywords.
1022 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1024 // C++ has wchar_t keyword.
1025 Opts.WChar = Opts.CPlusPlus;
1027 Opts.GNUKeywords = Opts.GNUMode;
1028 Opts.CXXOperatorNames = Opts.CPlusPlus;
1030 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1031 // is specified, or -std is set to a conforming mode.
1032 Opts.Trigraphs = !Opts.GNUMode;
1034 Opts.DollarIdents = !Opts.AsmPreprocessor;
1037 /// Attempt to parse a visibility value out of the given argument.
1038 static Visibility parseVisibility(Arg *arg, ArgList &args,
1039 DiagnosticsEngine &diags) {
1040 StringRef value = arg->getValue();
1041 if (value == "default") {
1042 return DefaultVisibility;
1043 } else if (value == "hidden") {
1044 return HiddenVisibility;
1045 } else if (value == "protected") {
1046 // FIXME: diagnose if target does not support protected visibility
1047 return ProtectedVisibility;
1050 diags.Report(diag::err_drv_invalid_value)
1051 << arg->getAsString(args) << value;
1052 return DefaultVisibility;
1055 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1056 DiagnosticsEngine &Diags) {
1057 // FIXME: Cleanup per-file based stuff.
1058 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1059 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1060 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1061 #define LANGSTANDARD(id, name, desc, features) \
1062 .Case(name, LangStandard::lang_##id)
1063 #include "clang/Frontend/LangStandards.def"
1064 .Default(LangStandard::lang_unspecified);
1065 if (LangStd == LangStandard::lang_unspecified)
1066 Diags.Report(diag::err_drv_invalid_value)
1067 << A->getAsString(Args) << A->getValue();
1069 // Valid standard, check to make sure language and standard are compatable.
1070 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1074 case IK_PreprocessedC:
1075 case IK_PreprocessedObjC:
1076 if (!(Std.isC89() || Std.isC99()))
1077 Diags.Report(diag::err_drv_argument_not_allowed_with)
1078 << A->getAsString(Args) << "C/ObjC";
1082 case IK_PreprocessedCXX:
1083 case IK_PreprocessedObjCXX:
1084 if (!Std.isCPlusPlus())
1085 Diags.Report(diag::err_drv_argument_not_allowed_with)
1086 << A->getAsString(Args) << "C++/ObjC++";
1090 Diags.Report(diag::err_drv_argument_not_allowed_with)
1091 << A->getAsString(Args) << "OpenCL";
1094 if (!Std.isCPlusPlus())
1095 Diags.Report(diag::err_drv_argument_not_allowed_with)
1096 << A->getAsString(Args) << "CUDA";
1104 // -cl-std only applies for OpenCL language standards.
1105 // Override the -std option in this case.
1106 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1107 LangStandard::Kind OpenCLLangStd
1108 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1109 .Case("CL", LangStandard::lang_opencl)
1110 .Case("CL1.1", LangStandard::lang_opencl11)
1111 .Case("CL1.2", LangStandard::lang_opencl12)
1112 .Default(LangStandard::lang_unspecified);
1114 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1115 Diags.Report(diag::err_drv_invalid_value)
1116 << A->getAsString(Args) << A->getValue();
1119 LangStd = OpenCLLangStd;
1122 CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1124 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1125 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1126 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1127 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1128 // name, as it doesn't seem a useful distinction.
1129 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1132 if (Args.hasArg(OPT_fno_operator_names))
1133 Opts.CXXOperatorNames = 0;
1136 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1137 StringRef value = arg->getValue();
1138 if (Opts.ObjCRuntime.tryParse(value))
1139 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1142 if (Args.hasArg(OPT_fobjc_gc_only))
1143 Opts.setGC(LangOptions::GCOnly);
1144 else if (Args.hasArg(OPT_fobjc_gc))
1145 Opts.setGC(LangOptions::HybridGC);
1146 else if (Args.hasArg(OPT_fobjc_arc)) {
1147 Opts.ObjCAutoRefCount = 1;
1148 if (!Opts.ObjCRuntime.allowsARC())
1149 Diags.Report(diag::err_arc_unsupported_on_runtime);
1151 // Only set ObjCARCWeak if ARC is enabled.
1152 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1153 Opts.ObjCARCWeak = 1;
1155 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak();
1158 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1159 Opts.ObjCInferRelatedResultType = 0;
1162 if (Args.hasArg(OPT_fgnu89_inline))
1165 if (Args.hasArg(OPT_fapple_kext)) {
1166 if (!Opts.CPlusPlus)
1167 Diags.Report(diag::warn_c_kext);
1172 if (Args.hasArg(OPT_print_ivar_layout))
1173 Opts.ObjCGCBitmapPrint = 1;
1174 if (Args.hasArg(OPT_fno_constant_cfstrings))
1175 Opts.NoConstantCFStrings = 1;
1177 if (Args.hasArg(OPT_faltivec))
1180 if (Args.hasArg(OPT_pthread))
1181 Opts.POSIXThreads = 1;
1183 // The value-visibility mode defaults to "default".
1184 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
1185 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
1187 Opts.setValueVisibilityMode(DefaultVisibility);
1190 // The type-visibility mode defaults to the value-visibility mode.
1191 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
1192 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
1194 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
1197 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1198 Opts.InlineVisibilityHidden = 1;
1200 if (Args.hasArg(OPT_ftrapv)) {
1201 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1202 // Set the handler, if one is specified.
1203 Opts.OverflowHandler =
1204 Args.getLastArgValue(OPT_ftrapv_handler);
1206 else if (Args.hasArg(OPT_fwrapv))
1207 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1209 if (Args.hasArg(OPT_trigraphs))
1212 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1213 OPT_fno_dollars_in_identifiers,
1215 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1217 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility);
1218 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility);
1219 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
1220 Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1221 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1222 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1223 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1225 if (Args.hasArg(OPT_fno_lax_vector_conversions))
1226 Opts.LaxVectorConversions = 0;
1227 if (Args.hasArg(OPT_fno_threadsafe_statics))
1228 Opts.ThreadsafeStatics = 0;
1229 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1230 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1231 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1232 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1233 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1235 Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1236 Opts.Blocks = Args.hasArg(OPT_fblocks);
1237 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1238 Opts.Modules = Args.hasArg(OPT_fmodules);
1239 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1240 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
1241 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1242 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1243 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1244 Opts.FormatExtensions = Args.hasArg(OPT_fformat_extensions);
1245 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1246 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1247 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1248 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1249 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1250 Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1251 Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 256,
1253 Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512,
1255 Opts.BracketDepth = Args.getLastArgIntValue(OPT_fbracket_depth, 256, Diags);
1256 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1257 Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ,
1259 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1260 Opts.ObjCConstantStringClass =
1261 Args.getLastArgValue(OPT_fconstant_string_class);
1262 Opts.ObjCDefaultSynthProperties =
1263 Args.hasArg(OPT_fobjc_default_synthesize_properties);
1264 Opts.EncodeExtendedBlockSig =
1265 Args.hasArg(OPT_fencode_extended_block_signature);
1266 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1267 Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags);
1268 Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1269 Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags);
1270 Opts.Static = Args.hasArg(OPT_static_define);
1271 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1272 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
1273 || Args.hasArg(OPT_fdump_record_layouts);
1274 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1275 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1276 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1277 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1278 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1279 Opts.MRTD = Args.hasArg(OPT_mrtd);
1280 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1281 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1282 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1283 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1284 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
1285 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
1286 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1287 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1289 // Check if -fopenmp is specified.
1290 Opts.OpenMP = Args.hasArg(OPT_fopenmp);
1292 // Record whether the __DEPRECATED define was requested.
1293 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1294 OPT_fno_deprecated_macro,
1297 // FIXME: Eliminate this dependency.
1298 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
1299 OptSize = getOptimizationLevelSize(Args);
1300 Opts.Optimize = Opt != 0;
1301 Opts.OptimizeSize = OptSize != 0;
1303 // This is the __NO_INLINE__ define, which just depends on things like the
1304 // optimization level and -fno-inline, not actually whether the backend has
1305 // inlining enabled.
1306 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
1308 Opts.FastMath = Args.hasArg(OPT_ffast_math);
1309 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only);
1311 Opts.RetainCommentsFromSystemHeaders =
1312 Args.hasArg(OPT_fretain_comments_from_system_headers);
1314 unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1317 Diags.Report(diag::err_drv_invalid_value)
1318 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1320 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1321 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
1322 case 2: Opts.setStackProtector(LangOptions::SSPReq); break;
1325 // Parse -fsanitize= arguments.
1326 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ);
1327 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) {
1328 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to
1329 // efficiently map string values to them. Perform the mapping indirectly:
1330 // convert strings to enumerated values, then switch over the enum to set
1331 // the right bitfield value.
1333 #define SANITIZER(NAME, ID) \
1335 #include "clang/Basic/Sanitizers.def"
1338 switch (llvm::StringSwitch<unsigned>(Sanitizers[I])
1339 #define SANITIZER(NAME, ID) \
1341 #include "clang/Basic/Sanitizers.def"
1342 .Default(Unknown)) {
1343 #define SANITIZER(NAME, ID) \
1345 Opts.Sanitize.ID = true; \
1347 #include "clang/Basic/Sanitizers.def"
1350 Diags.Report(diag::err_drv_invalid_value)
1351 << "-fsanitize=" << Sanitizers[I];
1357 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1358 FileManager &FileMgr,
1359 DiagnosticsEngine &Diags) {
1360 using namespace options;
1361 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1362 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1363 if (const Arg *A = Args.getLastArg(OPT_token_cache))
1364 Opts.TokenCache = A->getValue();
1366 Opts.TokenCache = Opts.ImplicitPTHInclude;
1367 Opts.UsePredefines = !Args.hasArg(OPT_undef);
1368 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1369 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1371 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1372 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1373 ie = Args.filtered_end(); it != ie; ++it) {
1375 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
1378 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1379 StringRef Value(A->getValue());
1380 size_t Comma = Value.find(',');
1382 unsigned EndOfLine = 0;
1384 if (Comma == StringRef::npos ||
1385 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1386 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1387 Diags.Report(diag::err_drv_preamble_format);
1389 Opts.PrecompiledPreambleBytes.first = Bytes;
1390 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1394 // Add macros from the command line.
1395 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1396 ie = Args.filtered_end(); it != ie; ++it) {
1397 if ((*it)->getOption().matches(OPT_D))
1398 Opts.addMacroDef((*it)->getValue());
1400 Opts.addMacroUndef((*it)->getValue());
1403 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1405 // Add the ordered list of -includes.
1406 for (arg_iterator it = Args.filtered_begin(OPT_include),
1407 ie = Args.filtered_end(); it != ie; ++it) {
1409 Opts.Includes.push_back(A->getValue());
1412 for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1413 ie = Args.filtered_end(); it != ie; ++it) {
1415 Opts.ChainedIncludes.push_back(A->getValue());
1418 // Include 'altivec.h' if -faltivec option present
1419 if (Args.hasArg(OPT_faltivec))
1420 Opts.Includes.push_back("altivec.h");
1422 for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1423 ie = Args.filtered_end(); it != ie; ++it) {
1425 std::pair<StringRef,StringRef> Split =
1426 StringRef(A->getValue()).split(';');
1428 if (Split.second.empty()) {
1429 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1433 Opts.addRemappedFile(Split.first, Split.second);
1436 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1437 StringRef Name = A->getValue();
1438 unsigned Library = llvm::StringSwitch<unsigned>(Name)
1439 .Case("libc++", ARCXX_libcxx)
1440 .Case("libstdc++", ARCXX_libstdcxx)
1441 .Case("none", ARCXX_nolib)
1444 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1446 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1450 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1452 frontend::ActionKind Action) {
1453 using namespace options;
1456 case frontend::ASTDeclList:
1457 case frontend::ASTDump:
1458 case frontend::ASTDumpXML:
1459 case frontend::ASTPrint:
1460 case frontend::ASTView:
1461 case frontend::EmitAssembly:
1462 case frontend::EmitBC:
1463 case frontend::EmitHTML:
1464 case frontend::EmitLLVM:
1465 case frontend::EmitLLVMOnly:
1466 case frontend::EmitCodeGenOnly:
1467 case frontend::EmitObj:
1468 case frontend::FixIt:
1469 case frontend::GenerateModule:
1470 case frontend::GeneratePCH:
1471 case frontend::GeneratePTH:
1472 case frontend::ParseSyntaxOnly:
1473 case frontend::ModuleFileInfo:
1474 case frontend::PluginAction:
1475 case frontend::PrintDeclContext:
1476 case frontend::RewriteObjC:
1477 case frontend::RewriteTest:
1478 case frontend::RunAnalysis:
1479 case frontend::MigrateSource:
1483 case frontend::DumpRawTokens:
1484 case frontend::DumpTokens:
1485 case frontend::InitOnly:
1486 case frontend::PrintPreamble:
1487 case frontend::PrintPreprocessedInput:
1488 case frontend::RewriteMacros:
1489 case frontend::RunPreprocessorOnly:
1490 Opts.ShowCPP = !Args.hasArg(OPT_dM);
1494 Opts.ShowComments = Args.hasArg(OPT_C);
1495 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1496 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1497 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1498 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
1501 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1502 using namespace options;
1503 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1504 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1505 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1506 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
1507 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1508 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1510 // Use the default target triple if unspecified.
1511 if (Opts.Triple.empty())
1512 Opts.Triple = llvm::sys::getDefaultTargetTriple();
1517 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1518 const char *const *ArgBegin,
1519 const char *const *ArgEnd,
1520 DiagnosticsEngine &Diags) {
1521 bool Success = true;
1523 // Parse the arguments.
1524 OwningPtr<OptTable> Opts(createDriverOptTable());
1525 unsigned MissingArgIndex, MissingArgCount;
1526 OwningPtr<InputArgList> Args(
1527 Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1529 // Check for missing argument error.
1530 if (MissingArgCount) {
1531 Diags.Report(diag::err_drv_missing_argument)
1532 << Args->getArgString(MissingArgIndex) << MissingArgCount;
1536 // Issue errors on unknown arguments.
1537 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1538 ie = Args->filtered_end(); it != ie; ++it) {
1539 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1543 // Issue errors on arguments that are not valid for CC1.
1544 for (ArgList::iterator I = Args->begin(), E = Args->end();
1546 if (!(*I)->getOption().hasFlag(options::CC1Option)) {
1547 Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args);
1552 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success;
1553 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
1554 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1555 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
1557 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args);
1558 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1559 // FIXME: We shouldn't have to pass the DashX option around here
1560 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1561 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags)
1563 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1564 if (DashX != IK_AST && DashX != IK_LLVM_IR) {
1565 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
1566 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
1567 Res.getLangOpts()->ObjCExceptions = 1;
1569 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1570 // PCH file and find the original header name. Remove the need to do that in
1571 // ParsePreprocessorArgs and remove the FileManager
1572 // parameters from the function and the "FileManager.h" #include.
1573 FileManager FileMgr(Res.getFileSystemOpts());
1574 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1575 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args,
1576 Res.getFrontendOpts().ProgramAction);
1577 ParseTargetArgs(Res.getTargetOpts(), *Args);
1584 class ModuleSignature {
1585 SmallVector<uint64_t, 16> Data;
1590 ModuleSignature() : CurBit(0), CurValue(0) { }
1592 void add(uint64_t Value, unsigned Bits);
1593 void add(StringRef Value);
1596 llvm::APInt getAsInteger() const;
1600 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
1601 CurValue |= Value << CurBit;
1602 if (CurBit + NumBits < 64) {
1607 // Add the current word.
1608 Data.push_back(CurValue);
1611 CurValue = Value >> (64-CurBit);
1614 CurBit = (CurBit+NumBits) & 63;
1617 void ModuleSignature::flush() {
1621 Data.push_back(CurValue);
1626 void ModuleSignature::add(StringRef Value) {
1627 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
1631 llvm::APInt ModuleSignature::getAsInteger() const {
1632 return llvm::APInt(Data.size() * 64, Data);
1635 std::string CompilerInvocation::getModuleHash() const {
1636 // Note: For QoI reasons, the things we use as a hash here should all be
1637 // dumped via the -module-info flag.
1638 using llvm::hash_code;
1639 using llvm::hash_value;
1640 using llvm::hash_combine;
1642 // Start the signature with the compiler version.
1643 // FIXME: We'd rather use something more cryptographically sound than
1644 // CityHash, but this will do for now.
1645 hash_code code = hash_value(getClangFullRepositoryVersion());
1647 // Extend the signature with the language options
1648 #define LANGOPT(Name, Bits, Default, Description) \
1649 code = hash_combine(code, LangOpts->Name);
1650 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1651 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
1652 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
1653 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
1654 #include "clang/Basic/LangOptions.def"
1656 // Extend the signature with the target options.
1657 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
1658 TargetOpts->ABI, TargetOpts->CXXABI,
1659 TargetOpts->LinkerVersion);
1660 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
1661 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
1663 // Extend the signature with preprocessor options.
1664 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
1665 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
1666 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
1668 std::vector<StringRef> MacroDefs;
1669 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
1670 I = getPreprocessorOpts().Macros.begin(),
1671 IEnd = getPreprocessorOpts().Macros.end();
1673 // If we're supposed to ignore this macro for the purposes of modules,
1674 // don't put it into the hash.
1675 if (!hsOpts.ModulesIgnoreMacros.empty()) {
1676 // Check whether we're ignoring this macro.
1677 StringRef MacroDef = I->first;
1678 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first))
1682 code = hash_combine(code, I->first, I->second);
1685 // Extend the signature with the sysroot.
1686 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes,
1687 hsOpts.UseStandardSystemIncludes,
1688 hsOpts.UseStandardCXXIncludes,
1691 // Darwin-specific hack: if we have a sysroot, use the contents of
1692 // $sysroot/System/Library/CoreServices/SystemVersion.plist
1693 // as part of the module hash.
1694 if (!hsOpts.Sysroot.empty()) {
1695 llvm::OwningPtr<llvm::MemoryBuffer> buffer;
1696 SmallString<128> systemVersionFile;
1697 systemVersionFile += hsOpts.Sysroot;
1698 llvm::sys::path::append(systemVersionFile, "System");
1699 llvm::sys::path::append(systemVersionFile, "Library");
1700 llvm::sys::path::append(systemVersionFile, "CoreServices");
1701 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist");
1702 if (!llvm::MemoryBuffer::getFile(systemVersionFile, buffer)) {
1703 code = hash_combine(code, buffer.get()->getBuffer());
1707 return llvm::APInt(64, code).toString(36, /*Signed=*/false);