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>
42 using namespace clang;
44 //===----------------------------------------------------------------------===//
46 //===----------------------------------------------------------------------===//
48 CompilerInvocationBase::CompilerInvocationBase()
49 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
50 DiagnosticOpts(new DiagnosticOptions()),
51 HeaderSearchOpts(new HeaderSearchOptions()),
52 PreprocessorOpts(new PreprocessorOptions()) {}
54 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
55 : RefCountedBase<CompilerInvocation>(),
56 LangOpts(new LangOptions(*X.getLangOpts())),
57 TargetOpts(new TargetOptions(X.getTargetOpts())),
58 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
59 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
60 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
62 CompilerInvocationBase::~CompilerInvocationBase() {}
64 //===----------------------------------------------------------------------===//
65 // Deserialization (from args)
66 //===----------------------------------------------------------------------===//
68 using namespace clang::driver;
69 using namespace clang::driver::options;
70 using namespace llvm::opt;
74 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
75 DiagnosticsEngine &Diags) {
76 unsigned DefaultOpt = 0;
77 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
80 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
81 if (A->getOption().matches(options::OPT_O0))
84 if (A->getOption().matches(options::OPT_Ofast))
87 assert (A->getOption().matches(options::OPT_O));
89 StringRef S(A->getValue());
90 if (S == "s" || S == "z" || S.empty())
93 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
99 static unsigned getOptimizationLevelSize(ArgList &Args) {
100 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
101 if (A->getOption().matches(options::OPT_O)) {
102 switch (A->getValue()[0]) {
115 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
116 OptSpecifier GroupWithValue,
117 std::vector<std::string> &Diagnostics) {
118 for (Arg *A : Args.filtered(Group)) {
119 if (A->getOption().getKind() == Option::FlagClass) {
120 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
121 // its name (minus the "W" or "R" at the beginning) to the warning list.
122 Diagnostics.push_back(A->getOption().getName().drop_front(1));
123 } else if (A->getOption().matches(GroupWithValue)) {
124 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group.
125 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-"));
127 // Otherwise, add its value (for OPT_W_Joined and similar).
128 for (const char *Arg : A->getValues())
129 Diagnostics.push_back(Arg);
134 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
135 DiagnosticsEngine &Diags) {
136 using namespace options;
138 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
139 StringRef Name = A->getValue();
140 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
141 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
142 .Case(CMDFLAG, NAME##Model)
143 #include "clang/StaticAnalyzer/Core/Analyses.def"
145 if (Value == NumStores) {
146 Diags.Report(diag::err_drv_invalid_value)
147 << A->getAsString(Args) << Name;
150 Opts.AnalysisStoreOpt = Value;
154 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
155 StringRef Name = A->getValue();
156 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
157 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
158 .Case(CMDFLAG, NAME##Model)
159 #include "clang/StaticAnalyzer/Core/Analyses.def"
160 .Default(NumConstraints);
161 if (Value == NumConstraints) {
162 Diags.Report(diag::err_drv_invalid_value)
163 << A->getAsString(Args) << Name;
166 Opts.AnalysisConstraintsOpt = Value;
170 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
171 StringRef Name = A->getValue();
172 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
173 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
174 .Case(CMDFLAG, PD_##NAME)
175 #include "clang/StaticAnalyzer/Core/Analyses.def"
176 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
177 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
178 Diags.Report(diag::err_drv_invalid_value)
179 << A->getAsString(Args) << Name;
182 Opts.AnalysisDiagOpt = Value;
186 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
187 StringRef Name = A->getValue();
188 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
189 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
191 #include "clang/StaticAnalyzer/Core/Analyses.def"
192 .Default(NumPurgeModes);
193 if (Value == NumPurgeModes) {
194 Diags.Report(diag::err_drv_invalid_value)
195 << A->getAsString(Args) << Name;
198 Opts.AnalysisPurgeOpt = Value;
202 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
203 StringRef Name = A->getValue();
204 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
205 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
207 #include "clang/StaticAnalyzer/Core/Analyses.def"
208 .Default(NumInliningModes);
209 if (Value == NumInliningModes) {
210 Diags.Report(diag::err_drv_invalid_value)
211 << A->getAsString(Args) << Name;
214 Opts.InliningMode = Value;
218 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
219 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks);
221 Opts.visualizeExplodedGraphWithGraphViz =
222 Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
223 Opts.visualizeExplodedGraphWithUbiGraph =
224 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
225 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
226 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
227 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
228 Opts.AnalyzeNestedBlocks =
229 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
230 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume);
231 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
232 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
233 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
234 Opts.maxBlockVisitOnPath =
235 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags);
236 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
237 Opts.InlineMaxStackDepth =
238 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth,
239 Opts.InlineMaxStackDepth, Diags);
241 Opts.CheckersControlList.clear();
242 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
243 OPT_analyzer_disable_checker),
244 ie = Args.filtered_end(); it != ie; ++it) {
247 bool enable = (A->getOption().getID() == OPT_analyzer_checker);
248 // We can have a list of comma separated checker names, e.g:
249 // '-analyzer-checker=cocoa,unix'
250 StringRef checkerList = A->getValue();
251 SmallVector<StringRef, 4> checkers;
252 checkerList.split(checkers, ",");
253 for (unsigned i = 0, e = checkers.size(); i != e; ++i)
254 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
257 // Go through the analyzer configuration options.
258 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config),
259 ie = Args.filtered_end(); it != ie; ++it) {
262 // We can have a list of comma separated config names, e.g:
263 // '-analyzer-config key1=val1,key2=val2'
264 StringRef configList = A->getValue();
265 SmallVector<StringRef, 4> configVals;
266 configList.split(configVals, ",");
267 for (unsigned i = 0, e = configVals.size(); i != e; ++i) {
269 std::tie(key, val) = configVals[i].split("=");
271 Diags.Report(SourceLocation(),
272 diag::err_analyzer_config_no_value) << configVals[i];
276 if (val.find('=') != StringRef::npos) {
277 Diags.Report(SourceLocation(),
278 diag::err_analyzer_config_multiple_values)
283 Opts.Config[key] = val;
290 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
291 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
292 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
296 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
297 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
298 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments);
301 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) {
302 if (Arg *A = Args.getLastArg(OPT_mcode_model)) {
303 StringRef Value = A->getValue();
304 if (Value == "small" || Value == "kernel" || Value == "medium" ||
307 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
312 /// \brief Create a new Regex instance out of the string value in \p RpassArg.
313 /// It returns a pointer to the newly generated Regex instance.
314 static std::shared_ptr<llvm::Regex>
315 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args,
317 StringRef Val = RpassArg->getValue();
318 std::string RegexError;
319 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
320 if (!Pattern->isValid(RegexError)) {
321 Diags.Report(diag::err_drv_optimization_remark_pattern)
322 << RegexError << RpassArg->getAsString(Args);
328 static void parseSanitizerKinds(StringRef FlagName,
329 const std::vector<std::string> &Sanitizers,
330 DiagnosticsEngine &Diags, SanitizerSet &S) {
331 for (const auto &Sanitizer : Sanitizers) {
332 SanitizerKind K = llvm::StringSwitch<SanitizerKind>(Sanitizer)
333 #define SANITIZER(NAME, ID) .Case(NAME, SanitizerKind::ID)
334 #include "clang/Basic/Sanitizers.def"
335 .Default(SanitizerKind::Unknown);
336 if (K == SanitizerKind::Unknown)
337 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
343 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
344 DiagnosticsEngine &Diags,
345 const TargetOptions &TargetOpts) {
346 using namespace options;
349 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
350 // TODO: This could be done in Driver
351 unsigned MaxOptLevel = 3;
352 if (OptimizationLevel > MaxOptLevel) {
353 // If the optimization level is not supported, fall back on the default
355 Diags.Report(diag::warn_drv_optimization_value)
356 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
357 OptimizationLevel = MaxOptLevel;
359 Opts.OptimizationLevel = OptimizationLevel;
361 // We must always run at least the always inlining pass.
363 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
364 : CodeGenOptions::OnlyAlwaysInlining);
365 // -fno-inline-functions overrides OptimizationLevel > 1.
366 Opts.NoInline = Args.hasArg(OPT_fno_inline);
367 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ?
368 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining());
370 if (Args.hasArg(OPT_gline_tables_only)) {
371 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly);
372 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) ||
373 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) {
374 bool Default = false;
375 // Until dtrace (via CTF) and LLDB can deal with distributed debug info,
376 // Darwin and FreeBSD default to standalone/full debug info.
377 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() ||
378 llvm::Triple(TargetOpts.Triple).isOSFreeBSD())
381 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default))
382 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo);
384 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo);
386 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
387 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
388 if (Args.hasArg(OPT_gdwarf_2))
389 Opts.DwarfVersion = 2;
390 else if (Args.hasArg(OPT_gdwarf_3))
391 Opts.DwarfVersion = 3;
392 else if (Args.hasArg(OPT_gdwarf_4))
393 Opts.DwarfVersion = 4;
394 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo)
395 // Default Dwarf version is 4 if we are generating debug information.
396 Opts.DwarfVersion = 4;
398 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
399 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
400 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
401 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
402 OPT_fuse_register_sized_bitfield_access);
403 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
404 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
405 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
406 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
407 Opts.NoCommon = Args.hasArg(OPT_fno_common);
408 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
409 Opts.OptimizeSize = getOptimizationLevelSize(Args);
410 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
411 Args.hasArg(OPT_ffreestanding));
413 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
414 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize));
415 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
417 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
418 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
419 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
420 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate);
421 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ);
422 Opts.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping);
423 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
424 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
425 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
426 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
427 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
428 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
429 Opts.CodeModel = getCodeModel(Args, Diags);
430 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
431 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
432 Opts.DisableFree = Args.hasArg(OPT_disable_free);
433 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
434 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
435 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
436 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
437 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
438 Args.hasArg(OPT_cl_finite_math_only) ||
439 Args.hasArg(OPT_cl_fast_relaxed_math));
440 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
441 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
442 Args.hasArg(OPT_cl_finite_math_only) ||
443 Args.hasArg(OPT_cl_fast_relaxed_math));
444 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros);
445 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
446 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
447 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
448 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
449 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
450 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
451 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
452 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
453 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
454 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
455 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
456 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
457 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
458 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
459 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
460 Args.hasArg(OPT_cl_fast_relaxed_math);
461 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
462 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
463 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
464 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
465 Diags.Report(diag::err_drv_invalid_value)
466 << Args.getLastArg(OPT_mthread_model)->getAsString(Args)
468 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
469 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
471 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
472 OPT_fno_function_sections, false);
473 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
474 OPT_fno_data_sections, false);
475 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
477 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile);
479 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
480 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
481 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
483 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
484 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
486 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
487 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
488 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
489 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
490 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
491 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
492 Opts.CoverageNoFunctionNamesInData =
493 Args.hasArg(OPT_coverage_no_function_names_in_data);
494 if (Args.hasArg(OPT_coverage_version_EQ)) {
495 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
496 if (CoverageVersion.size() != 4) {
497 Diags.Report(diag::err_drv_invalid_value)
498 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
501 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
506 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
507 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
508 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
509 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
510 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
511 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
512 Opts.SanitizeCoverage =
513 getLastArgIntValue(Args, OPT_fsanitize_coverage, 0, Diags);
514 Opts.SanitizeMemoryTrackOrigins =
515 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
516 Opts.SanitizeUndefinedTrapOnError =
517 Args.hasArg(OPT_fsanitize_undefined_trap_on_error);
519 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
520 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
521 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
522 StringRef Val = A->getValue();
523 unsigned StackAlignment = Opts.StackAlignment;
524 Val.getAsInteger(10, StackAlignment);
525 Opts.StackAlignment = StackAlignment;
528 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) {
529 StringRef Val = A->getValue();
530 unsigned StackProbeSize = Opts.StackProbeSize;
531 Val.getAsInteger(0, StackProbeSize);
532 Opts.StackProbeSize = StackProbeSize;
535 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
536 StringRef Name = A->getValue();
537 unsigned Method = llvm::StringSwitch<unsigned>(Name)
538 .Case("legacy", CodeGenOptions::Legacy)
539 .Case("non-legacy", CodeGenOptions::NonLegacy)
540 .Case("mixed", CodeGenOptions::Mixed)
543 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
546 Opts.setObjCDispatchMethod(
547 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
551 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
552 StringRef Name = A->getValue();
553 unsigned Model = llvm::StringSwitch<unsigned>(Name)
554 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
555 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
556 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
557 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
560 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
563 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
567 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
568 StringRef Val = A->getValue();
570 Opts.setFPContractMode(CodeGenOptions::FPC_Fast);
571 else if (Val == "on")
572 Opts.setFPContractMode(CodeGenOptions::FPC_On);
573 else if (Val == "off")
574 Opts.setFPContractMode(CodeGenOptions::FPC_Off);
576 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
579 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
580 if (A->getOption().matches(OPT_fpcc_struct_return)) {
581 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
583 assert(A->getOption().matches(OPT_freg_struct_return));
584 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
588 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
589 bool NeedLocTracking = false;
591 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
592 Opts.OptimizationRemarkPattern =
593 GenerateOptimizationRemarkRegex(Diags, Args, A);
594 NeedLocTracking = true;
597 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
598 Opts.OptimizationRemarkMissedPattern =
599 GenerateOptimizationRemarkRegex(Diags, Args, A);
600 NeedLocTracking = true;
603 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
604 Opts.OptimizationRemarkAnalysisPattern =
605 GenerateOptimizationRemarkRegex(Diags, Args, A);
606 NeedLocTracking = true;
609 // If the user requested to use a sample profile for PGO, then the
610 // backend will need to track source location information so the profile
611 // can be incorporated into the IR.
612 if (!Opts.SampleProfileFile.empty())
613 NeedLocTracking = true;
615 // If the user requested a flag that requires source locations available in
616 // the backend, make sure that the backend tracks source location information.
617 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo)
618 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly);
620 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
622 // Parse -fsanitize-recover= arguments.
623 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
624 parseSanitizerKinds("-fsanitize-recover=",
625 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
626 Opts.SanitizeRecover);
631 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
633 using namespace options;
634 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
635 Opts.Targets = Args.getAllArgValues(OPT_MT);
636 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
637 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
638 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
639 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
640 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
641 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
642 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
643 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
644 Opts.ModuleDependencyOutputDir =
645 Args.getLastArgValue(OPT_module_dependency_dir);
648 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
649 DiagnosticsEngine *Diags) {
650 using namespace options;
653 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
655 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
656 Opts.DiagnosticSerializationFile = A->getValue();
657 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
658 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
659 Opts.Pedantic = Args.hasArg(OPT_pedantic);
660 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
661 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
662 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
663 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
666 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
667 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
668 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
670 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
672 // Default behavior is to not to show note include stacks.
673 Opts.ShowNoteIncludeStack = false;
674 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
675 OPT_fno_diagnostics_show_note_include_stack))
676 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
677 Opts.ShowNoteIncludeStack = true;
679 StringRef ShowOverloads =
680 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
681 if (ShowOverloads == "best")
682 Opts.setShowOverloads(Ovl_Best);
683 else if (ShowOverloads == "all")
684 Opts.setShowOverloads(Ovl_All);
688 Diags->Report(diag::err_drv_invalid_value)
689 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
693 StringRef ShowCategory =
694 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
695 if (ShowCategory == "none")
696 Opts.ShowCategories = 0;
697 else if (ShowCategory == "id")
698 Opts.ShowCategories = 1;
699 else if (ShowCategory == "name")
700 Opts.ShowCategories = 2;
704 Diags->Report(diag::err_drv_invalid_value)
705 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
710 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
711 if (Format == "clang")
712 Opts.setFormat(DiagnosticOptions::Clang);
713 else if (Format == "msvc")
714 Opts.setFormat(DiagnosticOptions::MSVC);
715 else if (Format == "msvc-fallback") {
716 Opts.setFormat(DiagnosticOptions::MSVC);
717 Opts.CLFallbackMode = true;
718 } else if (Format == "vi")
719 Opts.setFormat(DiagnosticOptions::Vi);
723 Diags->Report(diag::err_drv_invalid_value)
724 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
728 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
729 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
730 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
731 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
732 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
733 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
734 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
735 Opts.MacroBacktraceLimit =
736 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
737 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
738 Opts.TemplateBacktraceLimit = getLastArgIntValue(
739 Args, OPT_ftemplate_backtrace_limit,
740 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
741 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
742 Args, OPT_fconstexpr_backtrace_limit,
743 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
744 Opts.SpellCheckingLimit = getLastArgIntValue(
745 Args, OPT_fspell_checking_limit,
746 DiagnosticOptions::DefaultSpellCheckingLimit, Diags);
747 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
748 DiagnosticOptions::DefaultTabStop, Diags);
749 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
750 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
752 Diags->Report(diag::warn_ignoring_ftabstop_value)
753 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
755 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
756 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
757 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
762 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
763 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
766 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
767 DiagnosticsEngine &Diags) {
768 using namespace options;
769 Opts.ProgramAction = frontend::ParseSyntaxOnly;
770 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
771 switch (A->getOption().getID()) {
773 llvm_unreachable("Invalid option in group!");
775 Opts.ProgramAction = frontend::ASTDeclList; break;
777 case OPT_ast_dump_lookups:
778 Opts.ProgramAction = frontend::ASTDump; break;
780 Opts.ProgramAction = frontend::ASTPrint; break;
782 Opts.ProgramAction = frontend::ASTView; break;
783 case OPT_dump_raw_tokens:
784 Opts.ProgramAction = frontend::DumpRawTokens; break;
785 case OPT_dump_tokens:
786 Opts.ProgramAction = frontend::DumpTokens; break;
788 Opts.ProgramAction = frontend::EmitAssembly; break;
789 case OPT_emit_llvm_bc:
790 Opts.ProgramAction = frontend::EmitBC; break;
792 Opts.ProgramAction = frontend::EmitHTML; break;
794 Opts.ProgramAction = frontend::EmitLLVM; break;
795 case OPT_emit_llvm_only:
796 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
797 case OPT_emit_codegen_only:
798 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
800 Opts.ProgramAction = frontend::EmitObj; break;
802 Opts.FixItSuffix = A->getValue();
805 Opts.ProgramAction = frontend::FixIt; break;
806 case OPT_emit_module:
807 Opts.ProgramAction = frontend::GenerateModule; break;
809 Opts.ProgramAction = frontend::GeneratePCH; break;
811 Opts.ProgramAction = frontend::GeneratePTH; break;
813 Opts.ProgramAction = frontend::InitOnly; break;
814 case OPT_fsyntax_only:
815 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
816 case OPT_module_file_info:
817 Opts.ProgramAction = frontend::ModuleFileInfo; break;
819 Opts.ProgramAction = frontend::VerifyPCH; break;
820 case OPT_print_decl_contexts:
821 Opts.ProgramAction = frontend::PrintDeclContext; break;
822 case OPT_print_preamble:
823 Opts.ProgramAction = frontend::PrintPreamble; break;
825 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
826 case OPT_rewrite_macros:
827 Opts.ProgramAction = frontend::RewriteMacros; break;
828 case OPT_rewrite_objc:
829 Opts.ProgramAction = frontend::RewriteObjC; break;
830 case OPT_rewrite_test:
831 Opts.ProgramAction = frontend::RewriteTest; break;
833 Opts.ProgramAction = frontend::RunAnalysis; break;
835 Opts.ProgramAction = frontend::MigrateSource; break;
837 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
841 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
842 Opts.Plugins.push_back(A->getValue(0));
843 Opts.ProgramAction = frontend::PluginAction;
844 Opts.ActionName = A->getValue();
846 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
847 end = Args.filtered_end(); it != end; ++it) {
848 if ((*it)->getValue(0) == Opts.ActionName)
849 Opts.PluginArgs.push_back((*it)->getValue(1));
853 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
854 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
855 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
856 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
857 end = Args.filtered_end(); it != end; ++it) {
858 if ((*it)->getValue(0) == Opts.AddPluginActions[i])
859 Opts.AddPluginArgs[i].push_back((*it)->getValue(1));
863 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
864 Opts.CodeCompletionAt =
865 ParsedSourceLocation::FromString(A->getValue());
866 if (Opts.CodeCompletionAt.FileName.empty())
867 Diags.Report(diag::err_drv_invalid_value)
868 << A->getAsString(Args) << A->getValue();
870 Opts.DisableFree = Args.hasArg(OPT_disable_free);
872 Opts.OutputFile = Args.getLastArgValue(OPT_o);
873 Opts.Plugins = Args.getAllArgValues(OPT_load);
874 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
875 Opts.ShowHelp = Args.hasArg(OPT_help);
876 Opts.ShowStats = Args.hasArg(OPT_print_stats);
877 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
878 Opts.ShowVersion = Args.hasArg(OPT_version);
879 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
880 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
881 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
882 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
883 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
884 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
885 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
886 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
887 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
888 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
889 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
890 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
891 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
893 Opts.CodeCompleteOpts.IncludeMacros
894 = Args.hasArg(OPT_code_completion_macros);
895 Opts.CodeCompleteOpts.IncludeCodePatterns
896 = Args.hasArg(OPT_code_completion_patterns);
897 Opts.CodeCompleteOpts.IncludeGlobals
898 = !Args.hasArg(OPT_no_code_completion_globals);
899 Opts.CodeCompleteOpts.IncludeBriefComments
900 = Args.hasArg(OPT_code_completion_brief_comments);
902 Opts.OverrideRecordLayoutsFile
903 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
904 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
906 OPT_arcmt_migrate)) {
907 switch (A->getOption().getID()) {
909 llvm_unreachable("missed a case");
910 case OPT_arcmt_check:
911 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
913 case OPT_arcmt_modify:
914 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
916 case OPT_arcmt_migrate:
917 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
921 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
922 Opts.ARCMTMigrateReportOut
923 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
924 Opts.ARCMTMigrateEmitARCErrors
925 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
927 if (Args.hasArg(OPT_objcmt_migrate_literals))
928 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
929 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
930 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
931 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
932 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
933 if (Args.hasArg(OPT_objcmt_migrate_property))
934 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
935 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
936 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
937 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
938 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
939 if (Args.hasArg(OPT_objcmt_migrate_annotation))
940 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
941 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
942 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
943 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
944 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
945 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
946 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
947 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
948 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
949 if (Args.hasArg(OPT_objcmt_atomic_property))
950 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
951 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
952 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
953 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
954 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
955 if (Args.hasArg(OPT_objcmt_migrate_all))
956 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
958 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
960 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
961 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
962 Diags.Report(diag::err_drv_argument_not_allowed_with)
963 << "ARC migration" << "ObjC migration";
966 InputKind DashX = IK_None;
967 if (const Arg *A = Args.getLastArg(OPT_x)) {
968 DashX = llvm::StringSwitch<InputKind>(A->getValue())
970 .Case("cl", IK_OpenCL)
971 .Case("cuda", IK_CUDA)
973 .Case("objective-c", IK_ObjC)
974 .Case("objective-c++", IK_ObjCXX)
975 .Case("cpp-output", IK_PreprocessedC)
976 .Case("assembler-with-cpp", IK_Asm)
977 .Case("c++-cpp-output", IK_PreprocessedCXX)
978 .Case("objective-c-cpp-output", IK_PreprocessedObjC)
979 .Case("objc-cpp-output", IK_PreprocessedObjC)
980 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
981 .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
982 .Case("c-header", IK_C)
983 .Case("cl-header", IK_OpenCL)
984 .Case("objective-c-header", IK_ObjC)
985 .Case("c++-header", IK_CXX)
986 .Case("objective-c++-header", IK_ObjCXX)
987 .Cases("ast", "pcm", IK_AST)
988 .Case("ir", IK_LLVM_IR)
990 if (DashX == IK_None)
991 Diags.Report(diag::err_drv_invalid_value)
992 << A->getAsString(Args) << A->getValue();
995 // '-' is the default input if none is given.
996 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
999 Inputs.push_back("-");
1000 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1001 InputKind IK = DashX;
1002 if (IK == IK_None) {
1003 IK = FrontendOptions::getInputKindForExtension(
1004 StringRef(Inputs[i]).rsplit('.').second);
1005 // FIXME: Remove this hack.
1009 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
1015 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1017 std::string ClangExecutable =
1018 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1019 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
1021 // Compute the path to the resource directory.
1022 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
1023 SmallString<128> P(Dir);
1024 if (ClangResourceDir != "") {
1025 llvm::sys::path::append(P, ClangResourceDir);
1027 StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX);
1028 llvm::sys::path::append(P, "..", Twine("lib") + ClangLibdirSuffix, "clang",
1029 CLANG_VERSION_STRING);
1035 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1036 using namespace options;
1037 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1038 Opts.Verbose = Args.hasArg(OPT_v);
1039 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1040 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1041 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1042 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1043 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1044 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1045 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path);
1046 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
1047 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1048 // -fmodules implies -fmodule-maps
1049 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules);
1050 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
1051 Opts.ModuleCachePruneInterval =
1052 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
1053 Opts.ModuleCachePruneAfter =
1054 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
1055 Opts.ModulesValidateOncePerBuildSession =
1056 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
1057 Opts.BuildSessionTimestamp =
1058 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
1059 Opts.ModulesValidateSystemHeaders =
1060 Args.hasArg(OPT_fmodules_validate_system_headers);
1062 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro),
1063 ie = Args.filtered_end();
1065 StringRef MacroDef = (*it)->getValue();
1066 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first);
1069 // Add -I..., -F..., and -index-header-map options in order.
1070 bool IsIndexHeaderMap = false;
1071 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1072 OPT_index_header_map),
1073 ie = Args.filtered_end(); it != ie; ++it) {
1074 if ((*it)->getOption().matches(OPT_index_header_map)) {
1075 // -index-header-map applies to the next -I or -F.
1076 IsIndexHeaderMap = true;
1080 frontend::IncludeDirGroup Group
1081 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1083 Opts.AddPath((*it)->getValue(), Group,
1084 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1085 IsIndexHeaderMap = false;
1088 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1089 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1090 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1091 OPT_iwithprefixbefore),
1092 ie = Args.filtered_end(); it != ie; ++it) {
1094 if (A->getOption().matches(OPT_iprefix))
1095 Prefix = A->getValue();
1096 else if (A->getOption().matches(OPT_iwithprefix))
1097 Opts.AddPath(Prefix.str() + A->getValue(),
1098 frontend::After, false, true);
1100 Opts.AddPath(Prefix.str() + A->getValue(),
1101 frontend::Angled, false, true);
1104 for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1105 ie = Args.filtered_end(); it != ie; ++it)
1106 Opts.AddPath((*it)->getValue(), frontend::After, false, true);
1107 for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1108 ie = Args.filtered_end(); it != ie; ++it)
1109 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true);
1110 for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1111 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1112 Opts.AddPath((*it)->getValue(), frontend::System, false,
1113 !(*it)->getOption().matches(OPT_iwithsysroot));
1114 for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1115 ie = Args.filtered_end(); it != ie; ++it)
1116 Opts.AddPath((*it)->getValue(), frontend::System, true, true);
1118 // Add the paths for the various language specific isystem flags.
1119 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1120 ie = Args.filtered_end(); it != ie; ++it)
1121 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true);
1122 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1123 ie = Args.filtered_end(); it != ie; ++it)
1124 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true);
1125 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1126 ie = Args.filtered_end(); it != ie; ++it)
1127 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true);
1128 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1129 ie = Args.filtered_end(); it != ie; ++it)
1130 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true);
1132 // Add the internal paths from a driver that detects standard include paths.
1133 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1134 OPT_internal_externc_isystem),
1135 E = Args.filtered_end();
1137 frontend::IncludeDirGroup Group = frontend::System;
1138 if ((*I)->getOption().matches(OPT_internal_externc_isystem))
1139 Group = frontend::ExternCSystem;
1140 Opts.AddPath((*I)->getValue(), Group, false, true);
1143 // Add the path prefixes which are implicitly treated as being system headers.
1144 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix,
1145 OPT_no_system_header_prefix),
1146 E = Args.filtered_end();
1148 Opts.AddSystemHeaderPrefix(
1149 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix));
1151 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay),
1152 E = Args.filtered_end(); I != E; ++I)
1153 Opts.AddVFSOverlayFile((*I)->getValue());
1156 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1157 LangStandard::Kind LangStd) {
1158 // Set some properties which depend solely on the input kind; it would be nice
1159 // to move these to the language standard, and have the driver resolve the
1160 // input kind + language standard.
1162 Opts.AsmPreprocessor = 1;
1163 } else if (IK == IK_ObjC ||
1165 IK == IK_PreprocessedObjC ||
1166 IK == IK_PreprocessedObjCXX) {
1167 Opts.ObjC1 = Opts.ObjC2 = 1;
1170 if (LangStd == LangStandard::lang_unspecified) {
1171 // Based on the base language, pick one.
1176 llvm_unreachable("Invalid input kind!");
1178 LangStd = LangStandard::lang_opencl;
1181 LangStd = LangStandard::lang_cuda;
1185 case IK_PreprocessedC:
1187 case IK_PreprocessedObjC:
1188 LangStd = LangStandard::lang_gnu11;
1191 case IK_PreprocessedCXX:
1193 case IK_PreprocessedObjCXX:
1194 LangStd = LangStandard::lang_gnucxx98;
1199 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1200 Opts.LineComment = Std.hasLineComments();
1201 Opts.C99 = Std.isC99();
1202 Opts.C11 = Std.isC11();
1203 Opts.CPlusPlus = Std.isCPlusPlus();
1204 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1205 Opts.CPlusPlus14 = Std.isCPlusPlus14();
1206 Opts.CPlusPlus1z = Std.isCPlusPlus1z();
1207 Opts.Digraphs = Std.hasDigraphs();
1208 Opts.GNUMode = Std.isGNUMode();
1209 Opts.GNUInline = !Std.isC99();
1210 Opts.HexFloats = Std.hasHexFloats();
1211 Opts.ImplicitInt = Std.hasImplicitInt();
1213 // Set OpenCL Version.
1214 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL;
1215 if (LangStd == LangStandard::lang_opencl)
1216 Opts.OpenCLVersion = 100;
1217 else if (LangStd == LangStandard::lang_opencl11)
1218 Opts.OpenCLVersion = 110;
1219 else if (LangStd == LangStandard::lang_opencl12)
1220 Opts.OpenCLVersion = 120;
1221 else if (LangStd == LangStandard::lang_opencl20)
1222 Opts.OpenCLVersion = 200;
1224 // OpenCL has some additional defaults.
1227 Opts.CXXOperatorNames = 1;
1228 Opts.LaxVectorConversions = 0;
1229 Opts.DefaultFPContract = 1;
1230 Opts.NativeHalfType = 1;
1233 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA;
1235 // OpenCL and C++ both have bool, true, false keywords.
1236 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1238 // OpenCL has half keyword
1239 Opts.Half = Opts.OpenCL;
1241 // C++ has wchar_t keyword.
1242 Opts.WChar = Opts.CPlusPlus;
1244 Opts.GNUKeywords = Opts.GNUMode;
1245 Opts.CXXOperatorNames = Opts.CPlusPlus;
1247 Opts.DollarIdents = !Opts.AsmPreprocessor;
1249 // C++14 onwards has sized global deallocation functions.
1250 Opts.SizedDeallocation = Opts.CPlusPlus14;
1253 /// Attempt to parse a visibility value out of the given argument.
1254 static Visibility parseVisibility(Arg *arg, ArgList &args,
1255 DiagnosticsEngine &diags) {
1256 StringRef value = arg->getValue();
1257 if (value == "default") {
1258 return DefaultVisibility;
1259 } else if (value == "hidden") {
1260 return HiddenVisibility;
1261 } else if (value == "protected") {
1262 // FIXME: diagnose if target does not support protected visibility
1263 return ProtectedVisibility;
1266 diags.Report(diag::err_drv_invalid_value)
1267 << arg->getAsString(args) << value;
1268 return DefaultVisibility;
1271 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) {
1272 auto Arg = Args.getLastArg(OPT_fms_compatibility_version);
1276 // The MSC versioning scheme involves four versioning components:
1282 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value.
1283 // Additionally, the value may be provided in the form of a more readable
1284 // MM.mm.bbbbb.pp version.
1286 // Unfortunately, due to the bit-width limitations, we cannot currently encode
1287 // the value for the patch level.
1289 unsigned VC[4] = {0};
1290 StringRef Value = Arg->getValue();
1291 SmallVector<StringRef, 4> Components;
1293 Value.split(Components, ".", llvm::array_lengthof(VC));
1294 for (unsigned CI = 0,
1295 CE = std::min(Components.size(), llvm::array_lengthof(VC));
1297 if (Components[CI].getAsInteger(10, VC[CI])) {
1298 Diags.Report(diag::err_drv_invalid_value)
1299 << Arg->getAsString(Args) << Value;
1304 // FIXME we cannot encode the patch level
1305 return VC[0] * 10000000 + VC[1] * 100000 + VC[2];
1308 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1309 DiagnosticsEngine &Diags) {
1310 // FIXME: Cleanup per-file based stuff.
1311 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1312 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1313 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1314 #define LANGSTANDARD(id, name, desc, features) \
1315 .Case(name, LangStandard::lang_##id)
1316 #include "clang/Frontend/LangStandards.def"
1317 .Default(LangStandard::lang_unspecified);
1318 if (LangStd == LangStandard::lang_unspecified)
1319 Diags.Report(diag::err_drv_invalid_value)
1320 << A->getAsString(Args) << A->getValue();
1322 // Valid standard, check to make sure language and standard are
1324 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1328 case IK_PreprocessedC:
1329 case IK_PreprocessedObjC:
1330 if (!(Std.isC89() || Std.isC99()))
1331 Diags.Report(diag::err_drv_argument_not_allowed_with)
1332 << A->getAsString(Args) << "C/ObjC";
1336 case IK_PreprocessedCXX:
1337 case IK_PreprocessedObjCXX:
1338 if (!Std.isCPlusPlus())
1339 Diags.Report(diag::err_drv_argument_not_allowed_with)
1340 << A->getAsString(Args) << "C++/ObjC++";
1344 Diags.Report(diag::err_drv_argument_not_allowed_with)
1345 << A->getAsString(Args) << "OpenCL";
1348 if (!Std.isCPlusPlus())
1349 Diags.Report(diag::err_drv_argument_not_allowed_with)
1350 << A->getAsString(Args) << "CUDA";
1358 // -cl-std only applies for OpenCL language standards.
1359 // Override the -std option in this case.
1360 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1361 LangStandard::Kind OpenCLLangStd
1362 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1363 .Case("CL", LangStandard::lang_opencl)
1364 .Case("CL1.1", LangStandard::lang_opencl11)
1365 .Case("CL1.2", LangStandard::lang_opencl12)
1366 .Case("CL2.0", LangStandard::lang_opencl20)
1367 .Default(LangStandard::lang_unspecified);
1369 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1370 Diags.Report(diag::err_drv_invalid_value)
1371 << A->getAsString(Args) << A->getValue();
1374 LangStd = OpenCLLangStd;
1377 CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1379 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1380 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1381 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1382 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1383 // name, as it doesn't seem a useful distinction.
1384 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1387 if (Args.hasArg(OPT_fno_operator_names))
1388 Opts.CXXOperatorNames = 0;
1390 if (Args.hasArg(OPT_fcuda_is_device))
1391 Opts.CUDAIsDevice = 1;
1394 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1395 StringRef value = arg->getValue();
1396 if (Opts.ObjCRuntime.tryParse(value))
1397 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1400 if (Args.hasArg(OPT_fobjc_gc_only))
1401 Opts.setGC(LangOptions::GCOnly);
1402 else if (Args.hasArg(OPT_fobjc_gc))
1403 Opts.setGC(LangOptions::HybridGC);
1404 else if (Args.hasArg(OPT_fobjc_arc)) {
1405 Opts.ObjCAutoRefCount = 1;
1406 if (!Opts.ObjCRuntime.allowsARC())
1407 Diags.Report(diag::err_arc_unsupported_on_runtime);
1409 // Only set ObjCARCWeak if ARC is enabled.
1410 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1411 Opts.ObjCARCWeak = 1;
1413 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak();
1416 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1417 Opts.ObjCInferRelatedResultType = 0;
1419 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
1420 Opts.ObjCSubscriptingLegacyRuntime =
1421 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
1424 if (Args.hasArg(OPT_fgnu89_inline))
1427 if (Args.hasArg(OPT_fapple_kext)) {
1428 if (!Opts.CPlusPlus)
1429 Diags.Report(diag::warn_c_kext);
1434 if (Args.hasArg(OPT_print_ivar_layout))
1435 Opts.ObjCGCBitmapPrint = 1;
1436 if (Args.hasArg(OPT_fno_constant_cfstrings))
1437 Opts.NoConstantCFStrings = 1;
1439 if (Args.hasArg(OPT_faltivec))
1442 if (Args.hasArg(OPT_pthread))
1443 Opts.POSIXThreads = 1;
1445 // The value-visibility mode defaults to "default".
1446 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
1447 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
1449 Opts.setValueVisibilityMode(DefaultVisibility);
1452 // The type-visibility mode defaults to the value-visibility mode.
1453 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
1454 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
1456 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
1459 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1460 Opts.InlineVisibilityHidden = 1;
1462 if (Args.hasArg(OPT_ftrapv)) {
1463 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1464 // Set the handler, if one is specified.
1465 Opts.OverflowHandler =
1466 Args.getLastArgValue(OPT_ftrapv_handler);
1468 else if (Args.hasArg(OPT_fwrapv))
1469 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1471 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
1472 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
1473 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
1474 Opts.MSCompatibilityVersion = parseMSCVersion(Args, Diags);
1476 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1477 // is specified, or -std is set to a conforming mode.
1478 // Trigraphs are disabled by default in c++1z onwards.
1479 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z;
1481 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
1483 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1484 OPT_fno_dollars_in_identifiers,
1486 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1487 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
1488 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1489 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1490 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1492 if (Args.hasArg(OPT_fno_lax_vector_conversions))
1493 Opts.LaxVectorConversions = 0;
1494 if (Args.hasArg(OPT_fno_threadsafe_statics))
1495 Opts.ThreadsafeStatics = 0;
1496 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1497 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1498 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1499 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1500 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1502 Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1503 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
1504 Opts.Blocks = Args.hasArg(OPT_fblocks);
1505 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1506 Opts.Modules = Args.hasArg(OPT_fmodules);
1507 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
1508 Opts.ModulesDeclUse =
1509 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
1510 Opts.ModulesSearchAll = Opts.Modules &&
1511 !Args.hasArg(OPT_fno_modules_search_all) &&
1512 Args.hasArg(OPT_fmodules_search_all);
1513 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
1514 Opts.ModulesImplicitMaps = Args.hasFlag(OPT_fmodules_implicit_maps,
1515 OPT_fno_modules_implicit_maps, true);
1516 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
1517 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
1518 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
1519 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1520 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1521 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1522 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
1523 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1524 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation);
1525 Opts.DefineSizedDeallocation = Opts.SizedDeallocation &&
1526 Args.hasArg(OPT_fdefine_sized_deallocation);
1527 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1528 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1529 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1530 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
1531 Opts.InstantiationDepth =
1532 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags);
1534 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
1535 Opts.ConstexprCallDepth =
1536 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
1537 Opts.ConstexprStepLimit =
1538 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
1539 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
1540 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1541 Opts.NumLargeByValueCopy =
1542 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
1543 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1544 Opts.ObjCConstantStringClass =
1545 Args.getLastArgValue(OPT_fconstant_string_class);
1546 Opts.ObjCDefaultSynthProperties =
1547 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
1548 Opts.EncodeExtendedBlockSig =
1549 Args.hasArg(OPT_fencode_extended_block_signature);
1550 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1551 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
1552 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
1553 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1554 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags);
1555 Opts.Static = Args.hasArg(OPT_static_define);
1556 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1557 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
1558 || Args.hasArg(OPT_fdump_record_layouts);
1559 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1560 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1561 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1562 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1563 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1564 Opts.MRTD = Args.hasArg(OPT_mrtd);
1565 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1566 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1567 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1568 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1569 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
1570 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
1571 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1572 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1573 Opts.ImplementationOfModule =
1574 Args.getLastArgValue(OPT_fmodule_implementation_of);
1575 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature);
1576 Opts.NativeHalfType = Opts.NativeHalfType;
1577 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns);
1578 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm);
1580 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() &&
1581 Opts.CurrentModule != Opts.ImplementationOfModule) {
1582 Diags.Report(diag::err_conflicting_module_names)
1583 << Opts.CurrentModule << Opts.ImplementationOfModule;
1586 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
1587 switch (llvm::StringSwitch<unsigned>(A->getValue())
1588 .Case("target", LangOptions::ASMM_Target)
1589 .Case("no", LangOptions::ASMM_Off)
1590 .Case("yes", LangOptions::ASMM_On)
1593 Diags.Report(diag::err_drv_invalid_value)
1594 << "-faddress-space-map-mangling=" << A->getValue();
1596 case LangOptions::ASMM_Target:
1597 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
1599 case LangOptions::ASMM_On:
1600 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
1602 case LangOptions::ASMM_Off:
1603 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
1608 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
1609 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
1610 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
1613 LangOptions::PPTMK_FullGeneralitySingleInheritance)
1615 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
1617 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
1618 .Default(LangOptions::PPTMK_BestCase);
1619 if (InheritanceModel == LangOptions::PPTMK_BestCase)
1620 Diags.Report(diag::err_drv_invalid_value)
1621 << "-fms-memptr-rep=" << A->getValue();
1623 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
1626 // Check if -fopenmp= is specified.
1627 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) {
1628 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue())
1629 .Case("libiomp5", true)
1633 // Record whether the __DEPRECATED define was requested.
1634 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1635 OPT_fno_deprecated_macro,
1638 // FIXME: Eliminate this dependency.
1639 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
1640 OptSize = getOptimizationLevelSize(Args);
1641 Opts.Optimize = Opt != 0;
1642 Opts.OptimizeSize = OptSize != 0;
1644 // This is the __NO_INLINE__ define, which just depends on things like the
1645 // optimization level and -fno-inline, not actually whether the backend has
1646 // inlining enabled.
1647 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
1649 Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
1650 Args.hasArg(OPT_cl_fast_relaxed_math);
1651 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
1652 Args.hasArg(OPT_cl_finite_math_only) ||
1653 Args.hasArg(OPT_cl_fast_relaxed_math);
1655 Opts.RetainCommentsFromSystemHeaders =
1656 Args.hasArg(OPT_fretain_comments_from_system_headers);
1658 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1661 Diags.Report(diag::err_drv_invalid_value)
1662 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1664 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1665 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
1666 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
1667 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
1670 // Parse -fsanitize= arguments.
1671 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
1672 Diags, Opts.Sanitize);
1673 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
1674 Opts.SanitizeAddressFieldPadding =
1675 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
1676 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist);
1679 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1680 FileManager &FileMgr,
1681 DiagnosticsEngine &Diags) {
1682 using namespace options;
1683 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1684 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1685 if (const Arg *A = Args.getLastArg(OPT_token_cache))
1686 Opts.TokenCache = A->getValue();
1688 Opts.TokenCache = Opts.ImplicitPTHInclude;
1689 Opts.UsePredefines = !Args.hasArg(OPT_undef);
1690 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1691 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1693 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1694 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1695 ie = Args.filtered_end(); it != ie; ++it) {
1697 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
1700 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1701 StringRef Value(A->getValue());
1702 size_t Comma = Value.find(',');
1704 unsigned EndOfLine = 0;
1706 if (Comma == StringRef::npos ||
1707 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1708 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1709 Diags.Report(diag::err_drv_preamble_format);
1711 Opts.PrecompiledPreambleBytes.first = Bytes;
1712 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1716 // Add macros from the command line.
1717 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1718 ie = Args.filtered_end(); it != ie; ++it) {
1719 if ((*it)->getOption().matches(OPT_D))
1720 Opts.addMacroDef((*it)->getValue());
1722 Opts.addMacroUndef((*it)->getValue());
1725 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1727 // Add the ordered list of -includes.
1728 for (arg_iterator it = Args.filtered_begin(OPT_include),
1729 ie = Args.filtered_end(); it != ie; ++it) {
1731 Opts.Includes.push_back(A->getValue());
1734 for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1735 ie = Args.filtered_end(); it != ie; ++it) {
1737 Opts.ChainedIncludes.push_back(A->getValue());
1740 // Include 'altivec.h' if -faltivec option present
1741 if (Args.hasArg(OPT_faltivec))
1742 Opts.Includes.push_back("altivec.h");
1744 for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1745 ie = Args.filtered_end(); it != ie; ++it) {
1747 std::pair<StringRef,StringRef> Split =
1748 StringRef(A->getValue()).split(';');
1750 if (Split.second.empty()) {
1751 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1755 Opts.addRemappedFile(Split.first, Split.second);
1758 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1759 StringRef Name = A->getValue();
1760 unsigned Library = llvm::StringSwitch<unsigned>(Name)
1761 .Case("libc++", ARCXX_libcxx)
1762 .Case("libstdc++", ARCXX_libstdcxx)
1763 .Case("none", ARCXX_nolib)
1766 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1768 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1772 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1774 frontend::ActionKind Action) {
1775 using namespace options;
1778 case frontend::ASTDeclList:
1779 case frontend::ASTDump:
1780 case frontend::ASTPrint:
1781 case frontend::ASTView:
1782 case frontend::EmitAssembly:
1783 case frontend::EmitBC:
1784 case frontend::EmitHTML:
1785 case frontend::EmitLLVM:
1786 case frontend::EmitLLVMOnly:
1787 case frontend::EmitCodeGenOnly:
1788 case frontend::EmitObj:
1789 case frontend::FixIt:
1790 case frontend::GenerateModule:
1791 case frontend::GeneratePCH:
1792 case frontend::GeneratePTH:
1793 case frontend::ParseSyntaxOnly:
1794 case frontend::ModuleFileInfo:
1795 case frontend::VerifyPCH:
1796 case frontend::PluginAction:
1797 case frontend::PrintDeclContext:
1798 case frontend::RewriteObjC:
1799 case frontend::RewriteTest:
1800 case frontend::RunAnalysis:
1801 case frontend::MigrateSource:
1805 case frontend::DumpRawTokens:
1806 case frontend::DumpTokens:
1807 case frontend::InitOnly:
1808 case frontend::PrintPreamble:
1809 case frontend::PrintPreprocessedInput:
1810 case frontend::RewriteMacros:
1811 case frontend::RunPreprocessorOnly:
1812 Opts.ShowCPP = !Args.hasArg(OPT_dM);
1816 Opts.ShowComments = Args.hasArg(OPT_C);
1817 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1818 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1819 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1820 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
1823 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1824 using namespace options;
1825 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1826 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1827 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
1828 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
1829 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1830 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1832 // Use the default target triple if unspecified.
1833 if (Opts.Triple.empty())
1834 Opts.Triple = llvm::sys::getDefaultTargetTriple();
1837 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1838 const char *const *ArgBegin,
1839 const char *const *ArgEnd,
1840 DiagnosticsEngine &Diags) {
1841 bool Success = true;
1843 // Parse the arguments.
1844 std::unique_ptr<OptTable> Opts(createDriverOptTable());
1845 const unsigned IncludedFlagsBitmask = options::CC1Option;
1846 unsigned MissingArgIndex, MissingArgCount;
1847 std::unique_ptr<InputArgList> Args(
1848 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount,
1849 IncludedFlagsBitmask));
1851 // Check for missing argument error.
1852 if (MissingArgCount) {
1853 Diags.Report(diag::err_drv_missing_argument)
1854 << Args->getArgString(MissingArgIndex) << MissingArgCount;
1858 // Issue errors on unknown arguments.
1859 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1860 ie = Args->filtered_end(); it != ie; ++it) {
1861 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1865 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success;
1866 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
1867 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1868 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
1870 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args);
1871 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1872 // FIXME: We shouldn't have to pass the DashX option around here
1873 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1874 ParseTargetArgs(Res.getTargetOpts(), *Args);
1875 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags,
1876 Res.getTargetOpts()) && Success;
1877 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1878 if (DashX != IK_AST && DashX != IK_LLVM_IR) {
1879 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
1880 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
1881 Res.getLangOpts()->ObjCExceptions = 1;
1883 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1884 // PCH file and find the original header name. Remove the need to do that in
1885 // ParsePreprocessorArgs and remove the FileManager
1886 // parameters from the function and the "FileManager.h" #include.
1887 FileManager FileMgr(Res.getFileSystemOpts());
1888 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1889 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args,
1890 Res.getFrontendOpts().ProgramAction);
1896 class ModuleSignature {
1897 SmallVector<uint64_t, 16> Data;
1902 ModuleSignature() : CurBit(0), CurValue(0) { }
1904 void add(uint64_t Value, unsigned Bits);
1905 void add(StringRef Value);
1908 llvm::APInt getAsInteger() const;
1912 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
1913 CurValue |= Value << CurBit;
1914 if (CurBit + NumBits < 64) {
1919 // Add the current word.
1920 Data.push_back(CurValue);
1923 CurValue = Value >> (64-CurBit);
1926 CurBit = (CurBit+NumBits) & 63;
1929 void ModuleSignature::flush() {
1933 Data.push_back(CurValue);
1938 void ModuleSignature::add(StringRef Value) {
1939 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
1943 llvm::APInt ModuleSignature::getAsInteger() const {
1944 return llvm::APInt(Data.size() * 64, Data);
1947 std::string CompilerInvocation::getModuleHash() const {
1948 // Note: For QoI reasons, the things we use as a hash here should all be
1949 // dumped via the -module-info flag.
1950 using llvm::hash_code;
1951 using llvm::hash_value;
1952 using llvm::hash_combine;
1954 // Start the signature with the compiler version.
1955 // FIXME: We'd rather use something more cryptographically sound than
1956 // CityHash, but this will do for now.
1957 hash_code code = hash_value(getClangFullRepositoryVersion());
1959 // Extend the signature with the language options
1960 #define LANGOPT(Name, Bits, Default, Description) \
1961 code = hash_combine(code, LangOpts->Name);
1962 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1963 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
1964 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
1965 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
1966 #include "clang/Basic/LangOptions.def"
1968 // Extend the signature with the target options.
1969 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
1971 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
1972 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
1974 // Extend the signature with preprocessor options.
1975 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
1976 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
1977 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
1979 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
1980 I = getPreprocessorOpts().Macros.begin(),
1981 IEnd = getPreprocessorOpts().Macros.end();
1983 // If we're supposed to ignore this macro for the purposes of modules,
1984 // don't put it into the hash.
1985 if (!hsOpts.ModulesIgnoreMacros.empty()) {
1986 // Check whether we're ignoring this macro.
1987 StringRef MacroDef = I->first;
1988 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first))
1992 code = hash_combine(code, I->first, I->second);
1995 // Extend the signature with the sysroot.
1996 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes,
1997 hsOpts.UseStandardSystemIncludes,
1998 hsOpts.UseStandardCXXIncludes,
2000 code = hash_combine(code, hsOpts.ResourceDir);
2002 // Extend the signature with the user build path.
2003 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
2005 // Darwin-specific hack: if we have a sysroot, use the contents and
2006 // modification time of
2007 // $sysroot/System/Library/CoreServices/SystemVersion.plist
2008 // as part of the module hash.
2009 if (!hsOpts.Sysroot.empty()) {
2010 SmallString<128> systemVersionFile;
2011 systemVersionFile += hsOpts.Sysroot;
2012 llvm::sys::path::append(systemVersionFile, "System");
2013 llvm::sys::path::append(systemVersionFile, "Library");
2014 llvm::sys::path::append(systemVersionFile, "CoreServices");
2015 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist");
2017 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer =
2018 llvm::MemoryBuffer::getFile(systemVersionFile.str());
2020 code = hash_combine(code, buffer.get()->getBuffer());
2022 struct stat statBuf;
2023 if (stat(systemVersionFile.c_str(), &statBuf) == 0)
2024 code = hash_combine(code, statBuf.st_mtime);
2028 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
2033 template<typename IntTy>
2034 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
2036 DiagnosticsEngine *Diags) {
2037 IntTy Res = Default;
2038 if (Arg *A = Args.getLastArg(Id)) {
2039 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
2041 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
2049 // Declared in clang/Frontend/Utils.h.
2050 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
2051 DiagnosticsEngine *Diags) {
2052 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
2055 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
2057 DiagnosticsEngine *Diags) {
2058 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
2061 void BuryPointer(const void *Ptr) {
2062 // This function may be called only a small fixed amount of times per each
2063 // invocation, otherwise we do actually have a leak which we want to report.
2064 // If this function is called more than kGraveYardMaxSize times, the pointers
2065 // will not be properly buried and a leak detector will report a leak, which
2066 // is what we want in such case.
2067 static const size_t kGraveYardMaxSize = 16;
2068 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2069 static std::atomic<unsigned> GraveYardSize;
2070 unsigned Idx = GraveYardSize++;
2071 if (Idx >= kGraveYardMaxSize)
2073 GraveYard[Idx] = Ptr;
2076 IntrusiveRefCntPtr<vfs::FileSystem>
2077 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2078 DiagnosticsEngine &Diags) {
2079 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2080 return vfs::getRealFileSystem();
2082 IntrusiveRefCntPtr<vfs::OverlayFileSystem>
2083 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem()));
2084 // earlier vfs files are on the bottom
2085 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2086 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2087 llvm::MemoryBuffer::getFile(File);
2089 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2090 return IntrusiveRefCntPtr<vfs::FileSystem>();
2093 IntrusiveRefCntPtr<vfs::FileSystem> FS =
2094 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr);
2096 Diags.Report(diag::err_invalid_vfs_overlay) << File;
2097 return IntrusiveRefCntPtr<vfs::FileSystem>();
2099 Overlay->pushOverlay(FS);
2103 } // end namespace clang