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/Config/config.h"
14 #include "clang/Driver/DriverDiagnostic.h"
15 #include "clang/Driver/Options.h"
16 #include "clang/Driver/Util.h"
17 #include "clang/Frontend/FrontendDiagnostic.h"
18 #include "clang/Frontend/LangStandard.h"
19 #include "clang/Frontend/Utils.h"
20 #include "clang/Lex/HeaderSearchOptions.h"
21 #include "clang/Serialization/ASTReader.h"
22 #include "llvm/ADT/Hashing.h"
23 #include "llvm/ADT/STLExtras.h"
24 #include "llvm/ADT/SmallVector.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/ADT/StringSwitch.h"
27 #include "llvm/ADT/Triple.h"
28 #include "llvm/Option/Arg.h"
29 #include "llvm/Option/ArgList.h"
30 #include "llvm/Option/OptTable.h"
31 #include "llvm/Option/Option.h"
32 #include "llvm/Support/CodeGen.h"
33 #include "llvm/Support/ErrorHandling.h"
34 #include "llvm/Support/FileSystem.h"
35 #include "llvm/Support/Host.h"
36 #include "llvm/Support/Path.h"
37 #include "llvm/Support/Process.h"
41 #include <system_error>
43 #include <unistd.h> // for gethostname()
45 using namespace clang;
47 //===----------------------------------------------------------------------===//
49 //===----------------------------------------------------------------------===//
51 CompilerInvocationBase::CompilerInvocationBase()
52 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
53 DiagnosticOpts(new DiagnosticOptions()),
54 HeaderSearchOpts(new HeaderSearchOptions()),
55 PreprocessorOpts(new PreprocessorOptions()) {}
57 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
58 : RefCountedBase<CompilerInvocation>(),
59 LangOpts(new LangOptions(*X.getLangOpts())),
60 TargetOpts(new TargetOptions(X.getTargetOpts())),
61 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
62 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
63 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
65 CompilerInvocationBase::~CompilerInvocationBase() {}
67 //===----------------------------------------------------------------------===//
68 // Deserialization (from args)
69 //===----------------------------------------------------------------------===//
71 using namespace clang::driver;
72 using namespace clang::driver::options;
73 using namespace llvm::opt;
77 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
78 DiagnosticsEngine &Diags) {
79 unsigned DefaultOpt = 0;
80 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
83 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
84 if (A->getOption().matches(options::OPT_O0))
87 if (A->getOption().matches(options::OPT_Ofast))
90 assert (A->getOption().matches(options::OPT_O));
92 StringRef S(A->getValue());
93 if (S == "s" || S == "z" || S.empty())
96 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
102 static unsigned getOptimizationLevelSize(ArgList &Args) {
103 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
104 if (A->getOption().matches(options::OPT_O)) {
105 switch (A->getValue()[0]) {
118 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
119 OptSpecifier GroupWithValue,
120 std::vector<std::string> &Diagnostics) {
121 for (Arg *A : Args.filtered(Group)) {
122 if (A->getOption().getKind() == Option::FlagClass) {
123 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
124 // its name (minus the "W" or "R" at the beginning) to the warning list.
125 Diagnostics.push_back(A->getOption().getName().drop_front(1));
126 } else if (A->getOption().matches(GroupWithValue)) {
127 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group.
128 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-"));
130 // Otherwise, add its value (for OPT_W_Joined and similar).
131 for (const char *Arg : A->getValues())
132 Diagnostics.push_back(Arg);
137 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
138 DiagnosticsEngine &Diags) {
139 using namespace options;
141 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
142 StringRef Name = A->getValue();
143 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
144 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
145 .Case(CMDFLAG, NAME##Model)
146 #include "clang/StaticAnalyzer/Core/Analyses.def"
148 if (Value == NumStores) {
149 Diags.Report(diag::err_drv_invalid_value)
150 << A->getAsString(Args) << Name;
153 Opts.AnalysisStoreOpt = Value;
157 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
158 StringRef Name = A->getValue();
159 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
160 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
161 .Case(CMDFLAG, NAME##Model)
162 #include "clang/StaticAnalyzer/Core/Analyses.def"
163 .Default(NumConstraints);
164 if (Value == NumConstraints) {
165 Diags.Report(diag::err_drv_invalid_value)
166 << A->getAsString(Args) << Name;
169 Opts.AnalysisConstraintsOpt = Value;
173 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
174 StringRef Name = A->getValue();
175 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
176 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
177 .Case(CMDFLAG, PD_##NAME)
178 #include "clang/StaticAnalyzer/Core/Analyses.def"
179 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
180 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
181 Diags.Report(diag::err_drv_invalid_value)
182 << A->getAsString(Args) << Name;
185 Opts.AnalysisDiagOpt = Value;
189 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
190 StringRef Name = A->getValue();
191 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
192 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
194 #include "clang/StaticAnalyzer/Core/Analyses.def"
195 .Default(NumPurgeModes);
196 if (Value == NumPurgeModes) {
197 Diags.Report(diag::err_drv_invalid_value)
198 << A->getAsString(Args) << Name;
201 Opts.AnalysisPurgeOpt = Value;
205 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
206 StringRef Name = A->getValue();
207 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
208 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
210 #include "clang/StaticAnalyzer/Core/Analyses.def"
211 .Default(NumInliningModes);
212 if (Value == NumInliningModes) {
213 Diags.Report(diag::err_drv_invalid_value)
214 << A->getAsString(Args) << Name;
217 Opts.InliningMode = Value;
221 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
222 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks);
224 Opts.visualizeExplodedGraphWithGraphViz =
225 Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
226 Opts.visualizeExplodedGraphWithUbiGraph =
227 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
228 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
229 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
230 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
231 Opts.AnalyzeNestedBlocks =
232 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
233 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume);
234 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
235 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
236 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
237 Opts.maxBlockVisitOnPath =
238 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags);
239 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
240 Opts.InlineMaxStackDepth =
241 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth,
242 Opts.InlineMaxStackDepth, Diags);
244 Opts.CheckersControlList.clear();
245 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
246 OPT_analyzer_disable_checker),
247 ie = Args.filtered_end(); it != ie; ++it) {
250 bool enable = (A->getOption().getID() == OPT_analyzer_checker);
251 // We can have a list of comma separated checker names, e.g:
252 // '-analyzer-checker=cocoa,unix'
253 StringRef checkerList = A->getValue();
254 SmallVector<StringRef, 4> checkers;
255 checkerList.split(checkers, ",");
256 for (unsigned i = 0, e = checkers.size(); i != e; ++i)
257 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
260 // Go through the analyzer configuration options.
261 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config),
262 ie = Args.filtered_end(); it != ie; ++it) {
265 // We can have a list of comma separated config names, e.g:
266 // '-analyzer-config key1=val1,key2=val2'
267 StringRef configList = A->getValue();
268 SmallVector<StringRef, 4> configVals;
269 configList.split(configVals, ",");
270 for (unsigned i = 0, e = configVals.size(); i != e; ++i) {
272 std::tie(key, val) = configVals[i].split("=");
274 Diags.Report(SourceLocation(),
275 diag::err_analyzer_config_no_value) << configVals[i];
279 if (val.find('=') != StringRef::npos) {
280 Diags.Report(SourceLocation(),
281 diag::err_analyzer_config_multiple_values)
286 Opts.Config[key] = val;
293 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
294 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
295 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
299 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
300 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
301 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments);
304 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) {
305 if (Arg *A = Args.getLastArg(OPT_mcode_model)) {
306 StringRef Value = A->getValue();
307 if (Value == "small" || Value == "kernel" || Value == "medium" ||
310 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
315 /// \brief Create a new Regex instance out of the string value in \p RpassArg.
316 /// It returns a pointer to the newly generated Regex instance.
317 static std::shared_ptr<llvm::Regex>
318 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args,
320 StringRef Val = RpassArg->getValue();
321 std::string RegexError;
322 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
323 if (!Pattern->isValid(RegexError)) {
324 Diags.Report(diag::err_drv_optimization_remark_pattern)
325 << RegexError << RpassArg->getAsString(Args);
331 static void parseSanitizerKinds(StringRef FlagName,
332 const std::vector<std::string> &Sanitizers,
333 DiagnosticsEngine &Diags, SanitizerSet &S) {
334 for (const auto &Sanitizer : Sanitizers) {
335 SanitizerKind K = llvm::StringSwitch<SanitizerKind>(Sanitizer)
336 #define SANITIZER(NAME, ID) .Case(NAME, SanitizerKind::ID)
337 #include "clang/Basic/Sanitizers.def"
338 .Default(SanitizerKind::Unknown);
339 if (K == SanitizerKind::Unknown)
340 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
346 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
347 DiagnosticsEngine &Diags,
348 const TargetOptions &TargetOpts) {
349 using namespace options;
352 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
353 // TODO: This could be done in Driver
354 unsigned MaxOptLevel = 3;
355 if (OptimizationLevel > MaxOptLevel) {
356 // If the optimization level is not supported, fall back on the default
358 Diags.Report(diag::warn_drv_optimization_value)
359 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
360 OptimizationLevel = MaxOptLevel;
362 Opts.OptimizationLevel = OptimizationLevel;
364 // We must always run at least the always inlining pass.
366 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
367 : CodeGenOptions::OnlyAlwaysInlining);
368 // -fno-inline-functions overrides OptimizationLevel > 1.
369 Opts.NoInline = Args.hasArg(OPT_fno_inline);
370 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ?
371 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining());
373 if (Args.hasArg(OPT_gline_tables_only)) {
374 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly);
375 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) ||
376 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) {
377 bool Default = false;
378 // Until dtrace (via CTF) and LLDB can deal with distributed debug info,
379 // Darwin and FreeBSD default to standalone/full debug info.
380 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() ||
381 llvm::Triple(TargetOpts.Triple).isOSFreeBSD())
384 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default))
385 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo);
387 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo);
389 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
390 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
391 if (Args.hasArg(OPT_gdwarf_2))
392 Opts.DwarfVersion = 2;
393 else if (Args.hasArg(OPT_gdwarf_3))
394 Opts.DwarfVersion = 3;
395 else if (Args.hasArg(OPT_gdwarf_4))
396 Opts.DwarfVersion = 4;
397 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo)
398 // Default Dwarf version is 4 if we are generating debug information.
399 Opts.DwarfVersion = 4;
401 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
402 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
403 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
404 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
405 OPT_fuse_register_sized_bitfield_access);
406 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
407 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
408 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
409 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
410 Opts.NoCommon = Args.hasArg(OPT_fno_common);
411 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
412 Opts.OptimizeSize = getOptimizationLevelSize(Args);
413 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
414 Args.hasArg(OPT_ffreestanding));
416 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
417 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize));
418 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
420 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
421 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
422 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
423 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate);
424 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ);
425 Opts.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping);
426 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
427 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
428 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
429 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
430 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
431 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
432 Opts.CodeModel = getCodeModel(Args, Diags);
433 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
434 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
435 Opts.DisableFree = Args.hasArg(OPT_disable_free);
436 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
437 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
438 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
439 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
440 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
441 Args.hasArg(OPT_cl_finite_math_only) ||
442 Args.hasArg(OPT_cl_fast_relaxed_math));
443 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
444 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
445 Args.hasArg(OPT_cl_finite_math_only) ||
446 Args.hasArg(OPT_cl_fast_relaxed_math));
447 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros);
448 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
449 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
450 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
451 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
452 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
453 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
454 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
455 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
456 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
457 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
458 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
459 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
460 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
461 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
462 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
463 Args.hasArg(OPT_cl_fast_relaxed_math);
464 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
465 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
466 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
467 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
468 Diags.Report(diag::err_drv_invalid_value)
469 << Args.getLastArg(OPT_mthread_model)->getAsString(Args)
471 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
472 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
474 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
475 OPT_fno_function_sections, false);
476 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
477 OPT_fno_data_sections, false);
478 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
480 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
481 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
482 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
484 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
485 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
487 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
488 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
489 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
490 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
491 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
492 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
493 Opts.CoverageNoFunctionNamesInData =
494 Args.hasArg(OPT_coverage_no_function_names_in_data);
495 if (Args.hasArg(OPT_coverage_version_EQ)) {
496 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
497 if (CoverageVersion.size() != 4) {
498 Diags.Report(diag::err_drv_invalid_value)
499 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
502 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
507 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
508 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
509 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
510 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
511 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
512 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
513 Opts.SanitizeCoverage =
514 getLastArgIntValue(Args, OPT_fsanitize_coverage, 0, Diags);
515 Opts.SanitizeMemoryTrackOrigins =
516 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
517 Opts.SanitizeUndefinedTrapOnError =
518 Args.hasArg(OPT_fsanitize_undefined_trap_on_error);
520 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
521 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
522 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
523 StringRef Val = A->getValue();
524 unsigned StackAlignment = Opts.StackAlignment;
525 Val.getAsInteger(10, StackAlignment);
526 Opts.StackAlignment = StackAlignment;
529 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) {
530 StringRef Val = A->getValue();
531 unsigned StackProbeSize = Opts.StackProbeSize;
532 Val.getAsInteger(0, StackProbeSize);
533 Opts.StackProbeSize = StackProbeSize;
536 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
537 StringRef Name = A->getValue();
538 unsigned Method = llvm::StringSwitch<unsigned>(Name)
539 .Case("legacy", CodeGenOptions::Legacy)
540 .Case("non-legacy", CodeGenOptions::NonLegacy)
541 .Case("mixed", CodeGenOptions::Mixed)
544 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
547 Opts.setObjCDispatchMethod(
548 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
552 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
553 StringRef Name = A->getValue();
554 unsigned Model = llvm::StringSwitch<unsigned>(Name)
555 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
556 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
557 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
558 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
561 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
564 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
568 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
569 StringRef Val = A->getValue();
571 Opts.setFPContractMode(CodeGenOptions::FPC_Fast);
572 else if (Val == "on")
573 Opts.setFPContractMode(CodeGenOptions::FPC_On);
574 else if (Val == "off")
575 Opts.setFPContractMode(CodeGenOptions::FPC_Off);
577 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
580 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
581 if (A->getOption().matches(OPT_fpcc_struct_return)) {
582 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
584 assert(A->getOption().matches(OPT_freg_struct_return));
585 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
589 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
590 bool NeedLocTracking = false;
592 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
593 Opts.OptimizationRemarkPattern =
594 GenerateOptimizationRemarkRegex(Diags, Args, A);
595 NeedLocTracking = true;
598 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
599 Opts.OptimizationRemarkMissedPattern =
600 GenerateOptimizationRemarkRegex(Diags, Args, A);
601 NeedLocTracking = true;
604 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
605 Opts.OptimizationRemarkAnalysisPattern =
606 GenerateOptimizationRemarkRegex(Diags, Args, A);
607 NeedLocTracking = true;
610 // If the user requested to use a sample profile for PGO, then the
611 // backend will need to track source location information so the profile
612 // can be incorporated into the IR.
613 if (!Opts.SampleProfileFile.empty())
614 NeedLocTracking = true;
616 // If the user requested a flag that requires source locations available in
617 // the backend, make sure that the backend tracks source location information.
618 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo)
619 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly);
621 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
623 // Parse -fsanitize-recover= arguments.
624 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
625 parseSanitizerKinds("-fsanitize-recover=",
626 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
627 Opts.SanitizeRecover);
632 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
634 using namespace options;
635 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
636 Opts.Targets = Args.getAllArgValues(OPT_MT);
637 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
638 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
639 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
640 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
641 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
642 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
643 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
644 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
645 Opts.ModuleDependencyOutputDir =
646 Args.getLastArgValue(OPT_module_dependency_dir);
649 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
650 DiagnosticsEngine *Diags) {
651 using namespace options;
654 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
656 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
657 Opts.DiagnosticSerializationFile = A->getValue();
658 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
659 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
660 Opts.Pedantic = Args.hasArg(OPT_pedantic);
661 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
662 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
663 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
664 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
667 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
668 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
669 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
671 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
673 // Default behavior is to not to show note include stacks.
674 Opts.ShowNoteIncludeStack = false;
675 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
676 OPT_fno_diagnostics_show_note_include_stack))
677 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
678 Opts.ShowNoteIncludeStack = true;
680 StringRef ShowOverloads =
681 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
682 if (ShowOverloads == "best")
683 Opts.setShowOverloads(Ovl_Best);
684 else if (ShowOverloads == "all")
685 Opts.setShowOverloads(Ovl_All);
689 Diags->Report(diag::err_drv_invalid_value)
690 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
694 StringRef ShowCategory =
695 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
696 if (ShowCategory == "none")
697 Opts.ShowCategories = 0;
698 else if (ShowCategory == "id")
699 Opts.ShowCategories = 1;
700 else if (ShowCategory == "name")
701 Opts.ShowCategories = 2;
705 Diags->Report(diag::err_drv_invalid_value)
706 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
711 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
712 if (Format == "clang")
713 Opts.setFormat(DiagnosticOptions::Clang);
714 else if (Format == "msvc")
715 Opts.setFormat(DiagnosticOptions::MSVC);
716 else if (Format == "msvc-fallback") {
717 Opts.setFormat(DiagnosticOptions::MSVC);
718 Opts.CLFallbackMode = true;
719 } else if (Format == "vi")
720 Opts.setFormat(DiagnosticOptions::Vi);
724 Diags->Report(diag::err_drv_invalid_value)
725 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
729 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
730 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
731 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
732 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
733 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
734 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
735 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
736 Opts.MacroBacktraceLimit =
737 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
738 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
739 Opts.TemplateBacktraceLimit = getLastArgIntValue(
740 Args, OPT_ftemplate_backtrace_limit,
741 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
742 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
743 Args, OPT_fconstexpr_backtrace_limit,
744 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
745 Opts.SpellCheckingLimit = getLastArgIntValue(
746 Args, OPT_fspell_checking_limit,
747 DiagnosticOptions::DefaultSpellCheckingLimit, Diags);
748 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
749 DiagnosticOptions::DefaultTabStop, Diags);
750 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
751 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
753 Diags->Report(diag::warn_ignoring_ftabstop_value)
754 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
756 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
757 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
758 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
763 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
764 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
767 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
768 DiagnosticsEngine &Diags) {
769 using namespace options;
770 Opts.ProgramAction = frontend::ParseSyntaxOnly;
771 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
772 switch (A->getOption().getID()) {
774 llvm_unreachable("Invalid option in group!");
776 Opts.ProgramAction = frontend::ASTDeclList; break;
778 case OPT_ast_dump_lookups:
779 Opts.ProgramAction = frontend::ASTDump; break;
781 Opts.ProgramAction = frontend::ASTPrint; break;
783 Opts.ProgramAction = frontend::ASTView; break;
784 case OPT_dump_raw_tokens:
785 Opts.ProgramAction = frontend::DumpRawTokens; break;
786 case OPT_dump_tokens:
787 Opts.ProgramAction = frontend::DumpTokens; break;
789 Opts.ProgramAction = frontend::EmitAssembly; break;
790 case OPT_emit_llvm_bc:
791 Opts.ProgramAction = frontend::EmitBC; break;
793 Opts.ProgramAction = frontend::EmitHTML; break;
795 Opts.ProgramAction = frontend::EmitLLVM; break;
796 case OPT_emit_llvm_only:
797 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
798 case OPT_emit_codegen_only:
799 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
801 Opts.ProgramAction = frontend::EmitObj; break;
803 Opts.FixItSuffix = A->getValue();
806 Opts.ProgramAction = frontend::FixIt; break;
807 case OPT_emit_module:
808 Opts.ProgramAction = frontend::GenerateModule; break;
810 Opts.ProgramAction = frontend::GeneratePCH; break;
812 Opts.ProgramAction = frontend::GeneratePTH; break;
814 Opts.ProgramAction = frontend::InitOnly; break;
815 case OPT_fsyntax_only:
816 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
817 case OPT_module_file_info:
818 Opts.ProgramAction = frontend::ModuleFileInfo; break;
820 Opts.ProgramAction = frontend::VerifyPCH; break;
821 case OPT_print_decl_contexts:
822 Opts.ProgramAction = frontend::PrintDeclContext; break;
823 case OPT_print_preamble:
824 Opts.ProgramAction = frontend::PrintPreamble; break;
826 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
827 case OPT_rewrite_macros:
828 Opts.ProgramAction = frontend::RewriteMacros; break;
829 case OPT_rewrite_objc:
830 Opts.ProgramAction = frontend::RewriteObjC; break;
831 case OPT_rewrite_test:
832 Opts.ProgramAction = frontend::RewriteTest; break;
834 Opts.ProgramAction = frontend::RunAnalysis; break;
836 Opts.ProgramAction = frontend::MigrateSource; break;
838 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
842 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
843 Opts.Plugins.push_back(A->getValue(0));
844 Opts.ProgramAction = frontend::PluginAction;
845 Opts.ActionName = A->getValue();
847 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
848 end = Args.filtered_end(); it != end; ++it) {
849 if ((*it)->getValue(0) == Opts.ActionName)
850 Opts.PluginArgs.push_back((*it)->getValue(1));
854 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
855 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
856 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
857 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
858 end = Args.filtered_end(); it != end; ++it) {
859 if ((*it)->getValue(0) == Opts.AddPluginActions[i])
860 Opts.AddPluginArgs[i].push_back((*it)->getValue(1));
864 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
865 Opts.CodeCompletionAt =
866 ParsedSourceLocation::FromString(A->getValue());
867 if (Opts.CodeCompletionAt.FileName.empty())
868 Diags.Report(diag::err_drv_invalid_value)
869 << A->getAsString(Args) << A->getValue();
871 Opts.DisableFree = Args.hasArg(OPT_disable_free);
873 Opts.OutputFile = Args.getLastArgValue(OPT_o);
874 Opts.Plugins = Args.getAllArgValues(OPT_load);
875 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
876 Opts.ShowHelp = Args.hasArg(OPT_help);
877 Opts.ShowStats = Args.hasArg(OPT_print_stats);
878 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
879 Opts.ShowVersion = Args.hasArg(OPT_version);
880 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
881 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
882 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
883 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
884 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
885 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
886 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
887 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
888 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
889 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
890 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
891 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
892 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
894 Opts.CodeCompleteOpts.IncludeMacros
895 = Args.hasArg(OPT_code_completion_macros);
896 Opts.CodeCompleteOpts.IncludeCodePatterns
897 = Args.hasArg(OPT_code_completion_patterns);
898 Opts.CodeCompleteOpts.IncludeGlobals
899 = !Args.hasArg(OPT_no_code_completion_globals);
900 Opts.CodeCompleteOpts.IncludeBriefComments
901 = Args.hasArg(OPT_code_completion_brief_comments);
903 Opts.OverrideRecordLayoutsFile
904 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
905 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
907 OPT_arcmt_migrate)) {
908 switch (A->getOption().getID()) {
910 llvm_unreachable("missed a case");
911 case OPT_arcmt_check:
912 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
914 case OPT_arcmt_modify:
915 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
917 case OPT_arcmt_migrate:
918 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
922 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
923 Opts.ARCMTMigrateReportOut
924 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
925 Opts.ARCMTMigrateEmitARCErrors
926 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
928 if (Args.hasArg(OPT_objcmt_migrate_literals))
929 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
930 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
931 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
932 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
933 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
934 if (Args.hasArg(OPT_objcmt_migrate_property))
935 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
936 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
937 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
938 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
939 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
940 if (Args.hasArg(OPT_objcmt_migrate_annotation))
941 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
942 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
943 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
944 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
945 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
946 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
947 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
948 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
949 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
950 if (Args.hasArg(OPT_objcmt_atomic_property))
951 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
952 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
953 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
954 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
955 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
956 if (Args.hasArg(OPT_objcmt_migrate_all))
957 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
959 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
961 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
962 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
963 Diags.Report(diag::err_drv_argument_not_allowed_with)
964 << "ARC migration" << "ObjC migration";
967 InputKind DashX = IK_None;
968 if (const Arg *A = Args.getLastArg(OPT_x)) {
969 DashX = llvm::StringSwitch<InputKind>(A->getValue())
971 .Case("cl", IK_OpenCL)
972 .Case("cuda", IK_CUDA)
974 .Case("objective-c", IK_ObjC)
975 .Case("objective-c++", IK_ObjCXX)
976 .Case("cpp-output", IK_PreprocessedC)
977 .Case("assembler-with-cpp", IK_Asm)
978 .Case("c++-cpp-output", IK_PreprocessedCXX)
979 .Case("objective-c-cpp-output", IK_PreprocessedObjC)
980 .Case("objc-cpp-output", IK_PreprocessedObjC)
981 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
982 .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
983 .Case("c-header", IK_C)
984 .Case("cl-header", IK_OpenCL)
985 .Case("objective-c-header", IK_ObjC)
986 .Case("c++-header", IK_CXX)
987 .Case("objective-c++-header", IK_ObjCXX)
988 .Cases("ast", "pcm", IK_AST)
989 .Case("ir", IK_LLVM_IR)
991 if (DashX == IK_None)
992 Diags.Report(diag::err_drv_invalid_value)
993 << A->getAsString(Args) << A->getValue();
996 // '-' is the default input if none is given.
997 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1000 Inputs.push_back("-");
1001 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1002 InputKind IK = DashX;
1003 if (IK == IK_None) {
1004 IK = FrontendOptions::getInputKindForExtension(
1005 StringRef(Inputs[i]).rsplit('.').second);
1006 // FIXME: Remove this hack.
1010 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
1016 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1018 std::string ClangExecutable =
1019 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1020 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
1022 // Compute the path to the resource directory.
1023 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
1024 SmallString<128> P(Dir);
1025 if (ClangResourceDir != "") {
1026 llvm::sys::path::append(P, ClangResourceDir);
1028 StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX);
1029 llvm::sys::path::append(P, "..", Twine("lib") + ClangLibdirSuffix, "clang",
1030 CLANG_VERSION_STRING);
1036 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1037 using namespace options;
1038 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1039 Opts.Verbose = Args.hasArg(OPT_v);
1040 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1041 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1042 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1043 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1044 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1045 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1046 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path);
1047 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
1048 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1049 // -fmodules implies -fmodule-maps
1050 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules);
1051 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
1052 Opts.ModuleCachePruneInterval =
1053 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
1054 Opts.ModuleCachePruneAfter =
1055 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
1056 Opts.ModulesValidateOncePerBuildSession =
1057 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
1058 Opts.BuildSessionTimestamp =
1059 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
1060 Opts.ModulesValidateSystemHeaders =
1061 Args.hasArg(OPT_fmodules_validate_system_headers);
1063 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro),
1064 ie = Args.filtered_end();
1066 StringRef MacroDef = (*it)->getValue();
1067 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first);
1070 // Add -I..., -F..., and -index-header-map options in order.
1071 bool IsIndexHeaderMap = false;
1072 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1073 OPT_index_header_map),
1074 ie = Args.filtered_end(); it != ie; ++it) {
1075 if ((*it)->getOption().matches(OPT_index_header_map)) {
1076 // -index-header-map applies to the next -I or -F.
1077 IsIndexHeaderMap = true;
1081 frontend::IncludeDirGroup Group
1082 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1084 Opts.AddPath((*it)->getValue(), Group,
1085 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1086 IsIndexHeaderMap = false;
1089 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1090 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1091 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1092 OPT_iwithprefixbefore),
1093 ie = Args.filtered_end(); it != ie; ++it) {
1095 if (A->getOption().matches(OPT_iprefix))
1096 Prefix = A->getValue();
1097 else if (A->getOption().matches(OPT_iwithprefix))
1098 Opts.AddPath(Prefix.str() + A->getValue(),
1099 frontend::After, false, true);
1101 Opts.AddPath(Prefix.str() + A->getValue(),
1102 frontend::Angled, false, true);
1105 for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1106 ie = Args.filtered_end(); it != ie; ++it)
1107 Opts.AddPath((*it)->getValue(), frontend::After, false, true);
1108 for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1109 ie = Args.filtered_end(); it != ie; ++it)
1110 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true);
1111 for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1112 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1113 Opts.AddPath((*it)->getValue(), frontend::System, false,
1114 !(*it)->getOption().matches(OPT_iwithsysroot));
1115 for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1116 ie = Args.filtered_end(); it != ie; ++it)
1117 Opts.AddPath((*it)->getValue(), frontend::System, true, true);
1119 // Add the paths for the various language specific isystem flags.
1120 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1121 ie = Args.filtered_end(); it != ie; ++it)
1122 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true);
1123 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1124 ie = Args.filtered_end(); it != ie; ++it)
1125 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true);
1126 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1127 ie = Args.filtered_end(); it != ie; ++it)
1128 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true);
1129 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1130 ie = Args.filtered_end(); it != ie; ++it)
1131 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true);
1133 // Add the internal paths from a driver that detects standard include paths.
1134 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1135 OPT_internal_externc_isystem),
1136 E = Args.filtered_end();
1138 frontend::IncludeDirGroup Group = frontend::System;
1139 if ((*I)->getOption().matches(OPT_internal_externc_isystem))
1140 Group = frontend::ExternCSystem;
1141 Opts.AddPath((*I)->getValue(), Group, false, true);
1144 // Add the path prefixes which are implicitly treated as being system headers.
1145 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix,
1146 OPT_no_system_header_prefix),
1147 E = Args.filtered_end();
1149 Opts.AddSystemHeaderPrefix(
1150 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix));
1152 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay),
1153 E = Args.filtered_end(); I != E; ++I)
1154 Opts.AddVFSOverlayFile((*I)->getValue());
1157 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1158 LangStandard::Kind LangStd) {
1159 // Set some properties which depend solely on the input kind; it would be nice
1160 // to move these to the language standard, and have the driver resolve the
1161 // input kind + language standard.
1163 Opts.AsmPreprocessor = 1;
1164 } else if (IK == IK_ObjC ||
1166 IK == IK_PreprocessedObjC ||
1167 IK == IK_PreprocessedObjCXX) {
1168 Opts.ObjC1 = Opts.ObjC2 = 1;
1171 if (LangStd == LangStandard::lang_unspecified) {
1172 // Based on the base language, pick one.
1177 llvm_unreachable("Invalid input kind!");
1179 LangStd = LangStandard::lang_opencl;
1182 LangStd = LangStandard::lang_cuda;
1186 case IK_PreprocessedC:
1188 case IK_PreprocessedObjC:
1189 LangStd = LangStandard::lang_gnu11;
1192 case IK_PreprocessedCXX:
1194 case IK_PreprocessedObjCXX:
1195 LangStd = LangStandard::lang_gnucxx98;
1200 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1201 Opts.LineComment = Std.hasLineComments();
1202 Opts.C99 = Std.isC99();
1203 Opts.C11 = Std.isC11();
1204 Opts.CPlusPlus = Std.isCPlusPlus();
1205 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1206 Opts.CPlusPlus14 = Std.isCPlusPlus14();
1207 Opts.CPlusPlus1z = Std.isCPlusPlus1z();
1208 Opts.Digraphs = Std.hasDigraphs();
1209 Opts.GNUMode = Std.isGNUMode();
1210 Opts.GNUInline = !Std.isC99();
1211 Opts.HexFloats = Std.hasHexFloats();
1212 Opts.ImplicitInt = Std.hasImplicitInt();
1214 // Set OpenCL Version.
1215 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL;
1216 if (LangStd == LangStandard::lang_opencl)
1217 Opts.OpenCLVersion = 100;
1218 else if (LangStd == LangStandard::lang_opencl11)
1219 Opts.OpenCLVersion = 110;
1220 else if (LangStd == LangStandard::lang_opencl12)
1221 Opts.OpenCLVersion = 120;
1222 else if (LangStd == LangStandard::lang_opencl20)
1223 Opts.OpenCLVersion = 200;
1225 // OpenCL has some additional defaults.
1228 Opts.CXXOperatorNames = 1;
1229 Opts.LaxVectorConversions = 0;
1230 Opts.DefaultFPContract = 1;
1231 Opts.NativeHalfType = 1;
1234 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA;
1236 // OpenCL and C++ both have bool, true, false keywords.
1237 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1239 // OpenCL has half keyword
1240 Opts.Half = Opts.OpenCL;
1242 // C++ has wchar_t keyword.
1243 Opts.WChar = Opts.CPlusPlus;
1245 Opts.GNUKeywords = Opts.GNUMode;
1246 Opts.CXXOperatorNames = Opts.CPlusPlus;
1248 Opts.DollarIdents = !Opts.AsmPreprocessor;
1250 // C++14 onwards has sized global deallocation functions.
1251 Opts.SizedDeallocation = Opts.CPlusPlus14;
1254 /// Attempt to parse a visibility value out of the given argument.
1255 static Visibility parseVisibility(Arg *arg, ArgList &args,
1256 DiagnosticsEngine &diags) {
1257 StringRef value = arg->getValue();
1258 if (value == "default") {
1259 return DefaultVisibility;
1260 } else if (value == "hidden") {
1261 return HiddenVisibility;
1262 } else if (value == "protected") {
1263 // FIXME: diagnose if target does not support protected visibility
1264 return ProtectedVisibility;
1267 diags.Report(diag::err_drv_invalid_value)
1268 << arg->getAsString(args) << value;
1269 return DefaultVisibility;
1272 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) {
1273 auto Arg = Args.getLastArg(OPT_fms_compatibility_version);
1277 // The MSC versioning scheme involves four versioning components:
1283 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value.
1284 // Additionally, the value may be provided in the form of a more readable
1285 // MM.mm.bbbbb.pp version.
1287 // Unfortunately, due to the bit-width limitations, we cannot currently encode
1288 // the value for the patch level.
1290 unsigned VC[4] = {0};
1291 StringRef Value = Arg->getValue();
1292 SmallVector<StringRef, 4> Components;
1294 Value.split(Components, ".", llvm::array_lengthof(VC));
1295 for (unsigned CI = 0,
1296 CE = std::min(Components.size(), llvm::array_lengthof(VC));
1298 if (Components[CI].getAsInteger(10, VC[CI])) {
1299 Diags.Report(diag::err_drv_invalid_value)
1300 << Arg->getAsString(Args) << Value;
1305 // FIXME we cannot encode the patch level
1306 return VC[0] * 10000000 + VC[1] * 100000 + VC[2];
1309 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1310 DiagnosticsEngine &Diags) {
1311 // FIXME: Cleanup per-file based stuff.
1312 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1313 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1314 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1315 #define LANGSTANDARD(id, name, desc, features) \
1316 .Case(name, LangStandard::lang_##id)
1317 #include "clang/Frontend/LangStandards.def"
1318 .Default(LangStandard::lang_unspecified);
1319 if (LangStd == LangStandard::lang_unspecified)
1320 Diags.Report(diag::err_drv_invalid_value)
1321 << A->getAsString(Args) << A->getValue();
1323 // Valid standard, check to make sure language and standard are
1325 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1329 case IK_PreprocessedC:
1330 case IK_PreprocessedObjC:
1331 if (!(Std.isC89() || Std.isC99()))
1332 Diags.Report(diag::err_drv_argument_not_allowed_with)
1333 << A->getAsString(Args) << "C/ObjC";
1337 case IK_PreprocessedCXX:
1338 case IK_PreprocessedObjCXX:
1339 if (!Std.isCPlusPlus())
1340 Diags.Report(diag::err_drv_argument_not_allowed_with)
1341 << A->getAsString(Args) << "C++/ObjC++";
1345 Diags.Report(diag::err_drv_argument_not_allowed_with)
1346 << A->getAsString(Args) << "OpenCL";
1349 if (!Std.isCPlusPlus())
1350 Diags.Report(diag::err_drv_argument_not_allowed_with)
1351 << A->getAsString(Args) << "CUDA";
1359 // -cl-std only applies for OpenCL language standards.
1360 // Override the -std option in this case.
1361 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1362 LangStandard::Kind OpenCLLangStd
1363 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1364 .Case("CL", LangStandard::lang_opencl)
1365 .Case("CL1.1", LangStandard::lang_opencl11)
1366 .Case("CL1.2", LangStandard::lang_opencl12)
1367 .Case("CL2.0", LangStandard::lang_opencl20)
1368 .Default(LangStandard::lang_unspecified);
1370 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1371 Diags.Report(diag::err_drv_invalid_value)
1372 << A->getAsString(Args) << A->getValue();
1375 LangStd = OpenCLLangStd;
1378 CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1380 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1381 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1382 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1383 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1384 // name, as it doesn't seem a useful distinction.
1385 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1388 if (Args.hasArg(OPT_fno_operator_names))
1389 Opts.CXXOperatorNames = 0;
1391 if (Args.hasArg(OPT_fcuda_is_device))
1392 Opts.CUDAIsDevice = 1;
1395 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1396 StringRef value = arg->getValue();
1397 if (Opts.ObjCRuntime.tryParse(value))
1398 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1401 if (Args.hasArg(OPT_fobjc_gc_only))
1402 Opts.setGC(LangOptions::GCOnly);
1403 else if (Args.hasArg(OPT_fobjc_gc))
1404 Opts.setGC(LangOptions::HybridGC);
1405 else if (Args.hasArg(OPT_fobjc_arc)) {
1406 Opts.ObjCAutoRefCount = 1;
1407 if (!Opts.ObjCRuntime.allowsARC())
1408 Diags.Report(diag::err_arc_unsupported_on_runtime);
1410 // Only set ObjCARCWeak if ARC is enabled.
1411 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1412 Opts.ObjCARCWeak = 1;
1414 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak();
1417 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1418 Opts.ObjCInferRelatedResultType = 0;
1420 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
1421 Opts.ObjCSubscriptingLegacyRuntime =
1422 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
1425 if (Args.hasArg(OPT_fgnu89_inline))
1428 if (Args.hasArg(OPT_fapple_kext)) {
1429 if (!Opts.CPlusPlus)
1430 Diags.Report(diag::warn_c_kext);
1435 if (Args.hasArg(OPT_print_ivar_layout))
1436 Opts.ObjCGCBitmapPrint = 1;
1437 if (Args.hasArg(OPT_fno_constant_cfstrings))
1438 Opts.NoConstantCFStrings = 1;
1440 if (Args.hasArg(OPT_faltivec))
1443 if (Args.hasArg(OPT_pthread))
1444 Opts.POSIXThreads = 1;
1446 // The value-visibility mode defaults to "default".
1447 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
1448 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
1450 Opts.setValueVisibilityMode(DefaultVisibility);
1453 // The type-visibility mode defaults to the value-visibility mode.
1454 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
1455 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
1457 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
1460 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1461 Opts.InlineVisibilityHidden = 1;
1463 if (Args.hasArg(OPT_ftrapv)) {
1464 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1465 // Set the handler, if one is specified.
1466 Opts.OverflowHandler =
1467 Args.getLastArgValue(OPT_ftrapv_handler);
1469 else if (Args.hasArg(OPT_fwrapv))
1470 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1472 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
1473 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
1474 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
1475 Opts.MSCompatibilityVersion = parseMSCVersion(Args, Diags);
1477 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1478 // is specified, or -std is set to a conforming mode.
1479 // Trigraphs are disabled by default in c++1z onwards.
1480 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z;
1482 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
1484 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1485 OPT_fno_dollars_in_identifiers,
1487 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1488 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
1489 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1490 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1491 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1493 if (Args.hasArg(OPT_fno_lax_vector_conversions))
1494 Opts.LaxVectorConversions = 0;
1495 if (Args.hasArg(OPT_fno_threadsafe_statics))
1496 Opts.ThreadsafeStatics = 0;
1497 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1498 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1499 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1500 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1501 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1503 Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1504 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
1505 Opts.Blocks = Args.hasArg(OPT_fblocks);
1506 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1507 Opts.Modules = Args.hasArg(OPT_fmodules);
1508 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
1509 Opts.ModulesDeclUse =
1510 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
1511 Opts.ModulesSearchAll = Opts.Modules &&
1512 !Args.hasArg(OPT_fno_modules_search_all) &&
1513 Args.hasArg(OPT_fmodules_search_all);
1514 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
1515 Opts.ModulesImplicitMaps = Args.hasFlag(OPT_fmodules_implicit_maps,
1516 OPT_fno_modules_implicit_maps, true);
1517 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
1518 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
1519 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
1520 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1521 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1522 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1523 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
1524 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1525 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation);
1526 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1527 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1528 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1529 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
1530 Opts.InstantiationDepth =
1531 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags);
1533 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
1534 Opts.ConstexprCallDepth =
1535 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
1536 Opts.ConstexprStepLimit =
1537 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
1538 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
1539 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1540 Opts.NumLargeByValueCopy =
1541 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
1542 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1543 Opts.ObjCConstantStringClass =
1544 Args.getLastArgValue(OPT_fconstant_string_class);
1545 Opts.ObjCDefaultSynthProperties =
1546 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
1547 Opts.EncodeExtendedBlockSig =
1548 Args.hasArg(OPT_fencode_extended_block_signature);
1549 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1550 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
1551 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
1552 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1553 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags);
1554 Opts.Static = Args.hasArg(OPT_static_define);
1555 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1556 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
1557 || Args.hasArg(OPT_fdump_record_layouts);
1558 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1559 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1560 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1561 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1562 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1563 Opts.MRTD = Args.hasArg(OPT_mrtd);
1564 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1565 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1566 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1567 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1568 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
1569 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
1570 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1571 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1572 Opts.ImplementationOfModule =
1573 Args.getLastArgValue(OPT_fmodule_implementation_of);
1574 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature);
1575 Opts.NativeHalfType = Opts.NativeHalfType;
1576 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns);
1577 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm);
1579 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() &&
1580 Opts.CurrentModule != Opts.ImplementationOfModule) {
1581 Diags.Report(diag::err_conflicting_module_names)
1582 << Opts.CurrentModule << Opts.ImplementationOfModule;
1585 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
1586 switch (llvm::StringSwitch<unsigned>(A->getValue())
1587 .Case("target", LangOptions::ASMM_Target)
1588 .Case("no", LangOptions::ASMM_Off)
1589 .Case("yes", LangOptions::ASMM_On)
1592 Diags.Report(diag::err_drv_invalid_value)
1593 << "-faddress-space-map-mangling=" << A->getValue();
1595 case LangOptions::ASMM_Target:
1596 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
1598 case LangOptions::ASMM_On:
1599 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
1601 case LangOptions::ASMM_Off:
1602 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
1607 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
1608 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
1609 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
1612 LangOptions::PPTMK_FullGeneralitySingleInheritance)
1614 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
1616 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
1617 .Default(LangOptions::PPTMK_BestCase);
1618 if (InheritanceModel == LangOptions::PPTMK_BestCase)
1619 Diags.Report(diag::err_drv_invalid_value)
1620 << "-fms-memptr-rep=" << A->getValue();
1622 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
1625 // Check if -fopenmp= is specified.
1626 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) {
1627 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue())
1628 .Case("libiomp5", true)
1632 // Record whether the __DEPRECATED define was requested.
1633 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1634 OPT_fno_deprecated_macro,
1637 // FIXME: Eliminate this dependency.
1638 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
1639 OptSize = getOptimizationLevelSize(Args);
1640 Opts.Optimize = Opt != 0;
1641 Opts.OptimizeSize = OptSize != 0;
1643 // This is the __NO_INLINE__ define, which just depends on things like the
1644 // optimization level and -fno-inline, not actually whether the backend has
1645 // inlining enabled.
1646 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
1648 Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
1649 Args.hasArg(OPT_cl_fast_relaxed_math);
1650 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
1651 Args.hasArg(OPT_cl_finite_math_only) ||
1652 Args.hasArg(OPT_cl_fast_relaxed_math);
1654 Opts.RetainCommentsFromSystemHeaders =
1655 Args.hasArg(OPT_fretain_comments_from_system_headers);
1657 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1660 Diags.Report(diag::err_drv_invalid_value)
1661 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1663 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1664 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
1665 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
1666 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
1669 // Parse -fsanitize= arguments.
1670 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
1671 Diags, Opts.Sanitize);
1672 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
1673 Opts.SanitizeAddressFieldPadding =
1674 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
1675 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist);
1678 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1679 FileManager &FileMgr,
1680 DiagnosticsEngine &Diags) {
1681 using namespace options;
1682 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1683 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1684 if (const Arg *A = Args.getLastArg(OPT_token_cache))
1685 Opts.TokenCache = A->getValue();
1687 Opts.TokenCache = Opts.ImplicitPTHInclude;
1688 Opts.UsePredefines = !Args.hasArg(OPT_undef);
1689 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1690 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1692 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1693 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1694 ie = Args.filtered_end(); it != ie; ++it) {
1696 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
1699 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1700 StringRef Value(A->getValue());
1701 size_t Comma = Value.find(',');
1703 unsigned EndOfLine = 0;
1705 if (Comma == StringRef::npos ||
1706 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1707 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1708 Diags.Report(diag::err_drv_preamble_format);
1710 Opts.PrecompiledPreambleBytes.first = Bytes;
1711 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1715 // Add macros from the command line.
1716 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1717 ie = Args.filtered_end(); it != ie; ++it) {
1718 if ((*it)->getOption().matches(OPT_D))
1719 Opts.addMacroDef((*it)->getValue());
1721 Opts.addMacroUndef((*it)->getValue());
1724 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1726 // Add the ordered list of -includes.
1727 for (arg_iterator it = Args.filtered_begin(OPT_include),
1728 ie = Args.filtered_end(); it != ie; ++it) {
1730 Opts.Includes.push_back(A->getValue());
1733 for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1734 ie = Args.filtered_end(); it != ie; ++it) {
1736 Opts.ChainedIncludes.push_back(A->getValue());
1739 // Include 'altivec.h' if -faltivec option present
1740 if (Args.hasArg(OPT_faltivec))
1741 Opts.Includes.push_back("altivec.h");
1743 for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1744 ie = Args.filtered_end(); it != ie; ++it) {
1746 std::pair<StringRef,StringRef> Split =
1747 StringRef(A->getValue()).split(';');
1749 if (Split.second.empty()) {
1750 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1754 Opts.addRemappedFile(Split.first, Split.second);
1757 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1758 StringRef Name = A->getValue();
1759 unsigned Library = llvm::StringSwitch<unsigned>(Name)
1760 .Case("libc++", ARCXX_libcxx)
1761 .Case("libstdc++", ARCXX_libstdcxx)
1762 .Case("none", ARCXX_nolib)
1765 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1767 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1771 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1773 frontend::ActionKind Action) {
1774 using namespace options;
1777 case frontend::ASTDeclList:
1778 case frontend::ASTDump:
1779 case frontend::ASTPrint:
1780 case frontend::ASTView:
1781 case frontend::EmitAssembly:
1782 case frontend::EmitBC:
1783 case frontend::EmitHTML:
1784 case frontend::EmitLLVM:
1785 case frontend::EmitLLVMOnly:
1786 case frontend::EmitCodeGenOnly:
1787 case frontend::EmitObj:
1788 case frontend::FixIt:
1789 case frontend::GenerateModule:
1790 case frontend::GeneratePCH:
1791 case frontend::GeneratePTH:
1792 case frontend::ParseSyntaxOnly:
1793 case frontend::ModuleFileInfo:
1794 case frontend::VerifyPCH:
1795 case frontend::PluginAction:
1796 case frontend::PrintDeclContext:
1797 case frontend::RewriteObjC:
1798 case frontend::RewriteTest:
1799 case frontend::RunAnalysis:
1800 case frontend::MigrateSource:
1804 case frontend::DumpRawTokens:
1805 case frontend::DumpTokens:
1806 case frontend::InitOnly:
1807 case frontend::PrintPreamble:
1808 case frontend::PrintPreprocessedInput:
1809 case frontend::RewriteMacros:
1810 case frontend::RunPreprocessorOnly:
1811 Opts.ShowCPP = !Args.hasArg(OPT_dM);
1815 Opts.ShowComments = Args.hasArg(OPT_C);
1816 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1817 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1818 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1819 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
1822 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1823 using namespace options;
1824 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1825 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1826 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
1827 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
1828 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1829 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1831 // Use the default target triple if unspecified.
1832 if (Opts.Triple.empty())
1833 Opts.Triple = llvm::sys::getDefaultTargetTriple();
1836 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1837 const char *const *ArgBegin,
1838 const char *const *ArgEnd,
1839 DiagnosticsEngine &Diags) {
1840 bool Success = true;
1842 // Parse the arguments.
1843 std::unique_ptr<OptTable> Opts(createDriverOptTable());
1844 const unsigned IncludedFlagsBitmask = options::CC1Option;
1845 unsigned MissingArgIndex, MissingArgCount;
1846 std::unique_ptr<InputArgList> Args(
1847 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount,
1848 IncludedFlagsBitmask));
1850 // Check for missing argument error.
1851 if (MissingArgCount) {
1852 Diags.Report(diag::err_drv_missing_argument)
1853 << Args->getArgString(MissingArgIndex) << MissingArgCount;
1857 // Issue errors on unknown arguments.
1858 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1859 ie = Args->filtered_end(); it != ie; ++it) {
1860 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1864 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success;
1865 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
1866 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1867 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
1869 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args);
1870 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1871 // FIXME: We shouldn't have to pass the DashX option around here
1872 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1873 ParseTargetArgs(Res.getTargetOpts(), *Args);
1874 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags,
1875 Res.getTargetOpts()) && Success;
1876 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1877 if (DashX != IK_AST && DashX != IK_LLVM_IR) {
1878 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
1879 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
1880 Res.getLangOpts()->ObjCExceptions = 1;
1882 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1883 // PCH file and find the original header name. Remove the need to do that in
1884 // ParsePreprocessorArgs and remove the FileManager
1885 // parameters from the function and the "FileManager.h" #include.
1886 FileManager FileMgr(Res.getFileSystemOpts());
1887 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1888 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args,
1889 Res.getFrontendOpts().ProgramAction);
1895 class ModuleSignature {
1896 SmallVector<uint64_t, 16> Data;
1901 ModuleSignature() : CurBit(0), CurValue(0) { }
1903 void add(uint64_t Value, unsigned Bits);
1904 void add(StringRef Value);
1907 llvm::APInt getAsInteger() const;
1911 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
1912 CurValue |= Value << CurBit;
1913 if (CurBit + NumBits < 64) {
1918 // Add the current word.
1919 Data.push_back(CurValue);
1922 CurValue = Value >> (64-CurBit);
1925 CurBit = (CurBit+NumBits) & 63;
1928 void ModuleSignature::flush() {
1932 Data.push_back(CurValue);
1937 void ModuleSignature::add(StringRef Value) {
1938 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
1942 llvm::APInt ModuleSignature::getAsInteger() const {
1943 return llvm::APInt(Data.size() * 64, Data);
1946 std::string CompilerInvocation::getModuleHash() const {
1947 // Note: For QoI reasons, the things we use as a hash here should all be
1948 // dumped via the -module-info flag.
1949 using llvm::hash_code;
1950 using llvm::hash_value;
1951 using llvm::hash_combine;
1953 // Start the signature with the compiler version.
1954 // FIXME: We'd rather use something more cryptographically sound than
1955 // CityHash, but this will do for now.
1956 hash_code code = hash_value(getClangFullRepositoryVersion());
1958 // Extend the signature with the language options
1959 #define LANGOPT(Name, Bits, Default, Description) \
1960 code = hash_combine(code, LangOpts->Name);
1961 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1962 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
1963 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
1964 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
1965 #include "clang/Basic/LangOptions.def"
1967 // Extend the signature with the target options.
1968 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
1970 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
1971 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
1973 // Extend the signature with preprocessor options.
1974 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
1975 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
1976 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
1978 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
1979 I = getPreprocessorOpts().Macros.begin(),
1980 IEnd = getPreprocessorOpts().Macros.end();
1982 // If we're supposed to ignore this macro for the purposes of modules,
1983 // don't put it into the hash.
1984 if (!hsOpts.ModulesIgnoreMacros.empty()) {
1985 // Check whether we're ignoring this macro.
1986 StringRef MacroDef = I->first;
1987 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first))
1991 code = hash_combine(code, I->first, I->second);
1994 // Extend the signature with the sysroot.
1995 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes,
1996 hsOpts.UseStandardSystemIncludes,
1997 hsOpts.UseStandardCXXIncludes,
1999 code = hash_combine(code, hsOpts.ResourceDir);
2001 // Extend the signature with the user build path.
2002 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
2004 // Darwin-specific hack: if we have a sysroot, use the contents and
2005 // modification time of
2006 // $sysroot/System/Library/CoreServices/SystemVersion.plist
2007 // as part of the module hash.
2008 if (!hsOpts.Sysroot.empty()) {
2009 SmallString<128> systemVersionFile;
2010 systemVersionFile += hsOpts.Sysroot;
2011 llvm::sys::path::append(systemVersionFile, "System");
2012 llvm::sys::path::append(systemVersionFile, "Library");
2013 llvm::sys::path::append(systemVersionFile, "CoreServices");
2014 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist");
2016 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer =
2017 llvm::MemoryBuffer::getFile(systemVersionFile.str());
2019 code = hash_combine(code, buffer.get()->getBuffer());
2021 struct stat statBuf;
2022 if (stat(systemVersionFile.c_str(), &statBuf) == 0)
2023 code = hash_combine(code, statBuf.st_mtime);
2028 // The LockFileManager cannot tell when processes from another host are
2029 // running, so mangle the hostname in to the module hash to separate them.
2033 gethostname(hostname, 255);
2034 code = hash_combine(code, StringRef(hostname));
2037 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
2042 template<typename IntTy>
2043 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
2045 DiagnosticsEngine *Diags) {
2046 IntTy Res = Default;
2047 if (Arg *A = Args.getLastArg(Id)) {
2048 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
2050 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
2058 // Declared in clang/Frontend/Utils.h.
2059 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
2060 DiagnosticsEngine *Diags) {
2061 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
2064 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
2066 DiagnosticsEngine *Diags) {
2067 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
2070 void BuryPointer(const void *Ptr) {
2071 // This function may be called only a small fixed amount of times per each
2072 // invocation, otherwise we do actually have a leak which we want to report.
2073 // If this function is called more than kGraveYardMaxSize times, the pointers
2074 // will not be properly buried and a leak detector will report a leak, which
2075 // is what we want in such case.
2076 static const size_t kGraveYardMaxSize = 16;
2077 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2078 static std::atomic<unsigned> GraveYardSize;
2079 unsigned Idx = GraveYardSize++;
2080 if (Idx >= kGraveYardMaxSize)
2082 GraveYard[Idx] = Ptr;
2085 IntrusiveRefCntPtr<vfs::FileSystem>
2086 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2087 DiagnosticsEngine &Diags) {
2088 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2089 return vfs::getRealFileSystem();
2091 IntrusiveRefCntPtr<vfs::OverlayFileSystem>
2092 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem()));
2093 // earlier vfs files are on the bottom
2094 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2095 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2096 llvm::MemoryBuffer::getFile(File);
2098 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2099 return IntrusiveRefCntPtr<vfs::FileSystem>();
2102 IntrusiveRefCntPtr<vfs::FileSystem> FS =
2103 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr);
2105 Diags.Report(diag::err_invalid_vfs_overlay) << File;
2106 return IntrusiveRefCntPtr<vfs::FileSystem>();
2108 Overlay->pushOverlay(FS);
2112 } // end namespace clang