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.MSVolatile = Args.hasArg(OPT_fms_volatile);
482 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
483 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
484 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
486 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
487 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
489 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
490 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
491 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
492 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
493 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
494 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
495 Opts.CoverageNoFunctionNamesInData =
496 Args.hasArg(OPT_coverage_no_function_names_in_data);
497 if (Args.hasArg(OPT_coverage_version_EQ)) {
498 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
499 if (CoverageVersion.size() != 4) {
500 Diags.Report(diag::err_drv_invalid_value)
501 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
504 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
509 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
510 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
511 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
512 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
513 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
514 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
515 Opts.SanitizeCoverage =
516 getLastArgIntValue(Args, OPT_fsanitize_coverage, 0, Diags);
517 Opts.SanitizeMemoryTrackOrigins =
518 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
519 Opts.SanitizeUndefinedTrapOnError =
520 Args.hasArg(OPT_fsanitize_undefined_trap_on_error);
522 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
523 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
524 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
525 StringRef Val = A->getValue();
526 unsigned StackAlignment = Opts.StackAlignment;
527 Val.getAsInteger(10, StackAlignment);
528 Opts.StackAlignment = StackAlignment;
531 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) {
532 StringRef Val = A->getValue();
533 unsigned StackProbeSize = Opts.StackProbeSize;
534 Val.getAsInteger(0, StackProbeSize);
535 Opts.StackProbeSize = StackProbeSize;
538 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
539 StringRef Name = A->getValue();
540 unsigned Method = llvm::StringSwitch<unsigned>(Name)
541 .Case("legacy", CodeGenOptions::Legacy)
542 .Case("non-legacy", CodeGenOptions::NonLegacy)
543 .Case("mixed", CodeGenOptions::Mixed)
546 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
549 Opts.setObjCDispatchMethod(
550 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
554 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
555 StringRef Name = A->getValue();
556 unsigned Model = llvm::StringSwitch<unsigned>(Name)
557 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
558 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
559 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
560 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
563 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
566 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
570 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
571 StringRef Val = A->getValue();
573 Opts.setFPContractMode(CodeGenOptions::FPC_Fast);
574 else if (Val == "on")
575 Opts.setFPContractMode(CodeGenOptions::FPC_On);
576 else if (Val == "off")
577 Opts.setFPContractMode(CodeGenOptions::FPC_Off);
579 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
582 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
583 if (A->getOption().matches(OPT_fpcc_struct_return)) {
584 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
586 assert(A->getOption().matches(OPT_freg_struct_return));
587 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
591 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
592 bool NeedLocTracking = false;
594 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
595 Opts.OptimizationRemarkPattern =
596 GenerateOptimizationRemarkRegex(Diags, Args, A);
597 NeedLocTracking = true;
600 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
601 Opts.OptimizationRemarkMissedPattern =
602 GenerateOptimizationRemarkRegex(Diags, Args, A);
603 NeedLocTracking = true;
606 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
607 Opts.OptimizationRemarkAnalysisPattern =
608 GenerateOptimizationRemarkRegex(Diags, Args, A);
609 NeedLocTracking = true;
612 // If the user requested to use a sample profile for PGO, then the
613 // backend will need to track source location information so the profile
614 // can be incorporated into the IR.
615 if (!Opts.SampleProfileFile.empty())
616 NeedLocTracking = true;
618 // If the user requested a flag that requires source locations available in
619 // the backend, make sure that the backend tracks source location information.
620 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo)
621 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly);
623 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
625 // Parse -fsanitize-recover= arguments.
626 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
627 parseSanitizerKinds("-fsanitize-recover=",
628 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
629 Opts.SanitizeRecover);
634 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
636 using namespace options;
637 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
638 Opts.Targets = Args.getAllArgValues(OPT_MT);
639 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
640 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
641 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
642 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
643 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
644 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
645 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
646 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
647 Opts.ModuleDependencyOutputDir =
648 Args.getLastArgValue(OPT_module_dependency_dir);
651 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
652 DiagnosticsEngine *Diags) {
653 using namespace options;
656 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
658 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
659 Opts.DiagnosticSerializationFile = A->getValue();
660 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
661 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
662 Opts.Pedantic = Args.hasArg(OPT_pedantic);
663 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
664 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
665 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
666 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
669 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
670 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
671 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
673 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
675 // Default behavior is to not to show note include stacks.
676 Opts.ShowNoteIncludeStack = false;
677 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
678 OPT_fno_diagnostics_show_note_include_stack))
679 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
680 Opts.ShowNoteIncludeStack = true;
682 StringRef ShowOverloads =
683 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
684 if (ShowOverloads == "best")
685 Opts.setShowOverloads(Ovl_Best);
686 else if (ShowOverloads == "all")
687 Opts.setShowOverloads(Ovl_All);
691 Diags->Report(diag::err_drv_invalid_value)
692 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
696 StringRef ShowCategory =
697 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
698 if (ShowCategory == "none")
699 Opts.ShowCategories = 0;
700 else if (ShowCategory == "id")
701 Opts.ShowCategories = 1;
702 else if (ShowCategory == "name")
703 Opts.ShowCategories = 2;
707 Diags->Report(diag::err_drv_invalid_value)
708 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
713 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
714 if (Format == "clang")
715 Opts.setFormat(DiagnosticOptions::Clang);
716 else if (Format == "msvc")
717 Opts.setFormat(DiagnosticOptions::MSVC);
718 else if (Format == "msvc-fallback") {
719 Opts.setFormat(DiagnosticOptions::MSVC);
720 Opts.CLFallbackMode = true;
721 } else if (Format == "vi")
722 Opts.setFormat(DiagnosticOptions::Vi);
726 Diags->Report(diag::err_drv_invalid_value)
727 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
731 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
732 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
733 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
734 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
735 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
736 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
737 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
738 Opts.MacroBacktraceLimit =
739 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
740 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
741 Opts.TemplateBacktraceLimit = getLastArgIntValue(
742 Args, OPT_ftemplate_backtrace_limit,
743 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
744 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
745 Args, OPT_fconstexpr_backtrace_limit,
746 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
747 Opts.SpellCheckingLimit = getLastArgIntValue(
748 Args, OPT_fspell_checking_limit,
749 DiagnosticOptions::DefaultSpellCheckingLimit, Diags);
750 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
751 DiagnosticOptions::DefaultTabStop, Diags);
752 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
753 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
755 Diags->Report(diag::warn_ignoring_ftabstop_value)
756 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
758 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
759 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
760 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
765 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
766 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
769 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
770 DiagnosticsEngine &Diags) {
771 using namespace options;
772 Opts.ProgramAction = frontend::ParseSyntaxOnly;
773 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
774 switch (A->getOption().getID()) {
776 llvm_unreachable("Invalid option in group!");
778 Opts.ProgramAction = frontend::ASTDeclList; break;
780 case OPT_ast_dump_lookups:
781 Opts.ProgramAction = frontend::ASTDump; break;
783 Opts.ProgramAction = frontend::ASTPrint; break;
785 Opts.ProgramAction = frontend::ASTView; break;
786 case OPT_dump_raw_tokens:
787 Opts.ProgramAction = frontend::DumpRawTokens; break;
788 case OPT_dump_tokens:
789 Opts.ProgramAction = frontend::DumpTokens; break;
791 Opts.ProgramAction = frontend::EmitAssembly; break;
792 case OPT_emit_llvm_bc:
793 Opts.ProgramAction = frontend::EmitBC; break;
795 Opts.ProgramAction = frontend::EmitHTML; break;
797 Opts.ProgramAction = frontend::EmitLLVM; break;
798 case OPT_emit_llvm_only:
799 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
800 case OPT_emit_codegen_only:
801 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
803 Opts.ProgramAction = frontend::EmitObj; break;
805 Opts.FixItSuffix = A->getValue();
808 Opts.ProgramAction = frontend::FixIt; break;
809 case OPT_emit_module:
810 Opts.ProgramAction = frontend::GenerateModule; break;
812 Opts.ProgramAction = frontend::GeneratePCH; break;
814 Opts.ProgramAction = frontend::GeneratePTH; break;
816 Opts.ProgramAction = frontend::InitOnly; break;
817 case OPT_fsyntax_only:
818 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
819 case OPT_module_file_info:
820 Opts.ProgramAction = frontend::ModuleFileInfo; break;
822 Opts.ProgramAction = frontend::VerifyPCH; break;
823 case OPT_print_decl_contexts:
824 Opts.ProgramAction = frontend::PrintDeclContext; break;
825 case OPT_print_preamble:
826 Opts.ProgramAction = frontend::PrintPreamble; break;
828 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
829 case OPT_rewrite_macros:
830 Opts.ProgramAction = frontend::RewriteMacros; break;
831 case OPT_rewrite_objc:
832 Opts.ProgramAction = frontend::RewriteObjC; break;
833 case OPT_rewrite_test:
834 Opts.ProgramAction = frontend::RewriteTest; break;
836 Opts.ProgramAction = frontend::RunAnalysis; break;
838 Opts.ProgramAction = frontend::MigrateSource; break;
840 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
844 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
845 Opts.Plugins.push_back(A->getValue(0));
846 Opts.ProgramAction = frontend::PluginAction;
847 Opts.ActionName = A->getValue();
849 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
850 end = Args.filtered_end(); it != end; ++it) {
851 if ((*it)->getValue(0) == Opts.ActionName)
852 Opts.PluginArgs.push_back((*it)->getValue(1));
856 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
857 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
858 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
859 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
860 end = Args.filtered_end(); it != end; ++it) {
861 if ((*it)->getValue(0) == Opts.AddPluginActions[i])
862 Opts.AddPluginArgs[i].push_back((*it)->getValue(1));
866 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
867 Opts.CodeCompletionAt =
868 ParsedSourceLocation::FromString(A->getValue());
869 if (Opts.CodeCompletionAt.FileName.empty())
870 Diags.Report(diag::err_drv_invalid_value)
871 << A->getAsString(Args) << A->getValue();
873 Opts.DisableFree = Args.hasArg(OPT_disable_free);
875 Opts.OutputFile = Args.getLastArgValue(OPT_o);
876 Opts.Plugins = Args.getAllArgValues(OPT_load);
877 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
878 Opts.ShowHelp = Args.hasArg(OPT_help);
879 Opts.ShowStats = Args.hasArg(OPT_print_stats);
880 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
881 Opts.ShowVersion = Args.hasArg(OPT_version);
882 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
883 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
884 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
885 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
886 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
887 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
888 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
889 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
890 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
891 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
892 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
893 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
894 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
896 Opts.CodeCompleteOpts.IncludeMacros
897 = Args.hasArg(OPT_code_completion_macros);
898 Opts.CodeCompleteOpts.IncludeCodePatterns
899 = Args.hasArg(OPT_code_completion_patterns);
900 Opts.CodeCompleteOpts.IncludeGlobals
901 = !Args.hasArg(OPT_no_code_completion_globals);
902 Opts.CodeCompleteOpts.IncludeBriefComments
903 = Args.hasArg(OPT_code_completion_brief_comments);
905 Opts.OverrideRecordLayoutsFile
906 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
907 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
909 OPT_arcmt_migrate)) {
910 switch (A->getOption().getID()) {
912 llvm_unreachable("missed a case");
913 case OPT_arcmt_check:
914 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
916 case OPT_arcmt_modify:
917 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
919 case OPT_arcmt_migrate:
920 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
924 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
925 Opts.ARCMTMigrateReportOut
926 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
927 Opts.ARCMTMigrateEmitARCErrors
928 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
930 if (Args.hasArg(OPT_objcmt_migrate_literals))
931 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
932 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
933 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
934 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
935 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
936 if (Args.hasArg(OPT_objcmt_migrate_property))
937 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
938 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
939 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
940 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
941 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
942 if (Args.hasArg(OPT_objcmt_migrate_annotation))
943 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
944 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
945 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
946 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
947 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
948 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
949 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
950 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
951 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
952 if (Args.hasArg(OPT_objcmt_atomic_property))
953 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
954 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
955 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
956 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
957 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
958 if (Args.hasArg(OPT_objcmt_migrate_all))
959 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
961 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
963 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
964 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
965 Diags.Report(diag::err_drv_argument_not_allowed_with)
966 << "ARC migration" << "ObjC migration";
969 InputKind DashX = IK_None;
970 if (const Arg *A = Args.getLastArg(OPT_x)) {
971 DashX = llvm::StringSwitch<InputKind>(A->getValue())
973 .Case("cl", IK_OpenCL)
974 .Case("cuda", IK_CUDA)
976 .Case("objective-c", IK_ObjC)
977 .Case("objective-c++", IK_ObjCXX)
978 .Case("cpp-output", IK_PreprocessedC)
979 .Case("assembler-with-cpp", IK_Asm)
980 .Case("c++-cpp-output", IK_PreprocessedCXX)
981 .Case("objective-c-cpp-output", IK_PreprocessedObjC)
982 .Case("objc-cpp-output", IK_PreprocessedObjC)
983 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
984 .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
985 .Case("c-header", IK_C)
986 .Case("cl-header", IK_OpenCL)
987 .Case("objective-c-header", IK_ObjC)
988 .Case("c++-header", IK_CXX)
989 .Case("objective-c++-header", IK_ObjCXX)
990 .Cases("ast", "pcm", IK_AST)
991 .Case("ir", IK_LLVM_IR)
993 if (DashX == IK_None)
994 Diags.Report(diag::err_drv_invalid_value)
995 << A->getAsString(Args) << A->getValue();
998 // '-' is the default input if none is given.
999 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1000 Opts.Inputs.clear();
1002 Inputs.push_back("-");
1003 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1004 InputKind IK = DashX;
1005 if (IK == IK_None) {
1006 IK = FrontendOptions::getInputKindForExtension(
1007 StringRef(Inputs[i]).rsplit('.').second);
1008 // FIXME: Remove this hack.
1012 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
1018 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1020 std::string ClangExecutable =
1021 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1022 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
1024 // Compute the path to the resource directory.
1025 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
1026 SmallString<128> P(Dir);
1027 if (ClangResourceDir != "") {
1028 llvm::sys::path::append(P, ClangResourceDir);
1030 StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX);
1031 llvm::sys::path::append(P, "..", Twine("lib") + ClangLibdirSuffix, "clang",
1032 CLANG_VERSION_STRING);
1038 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1039 using namespace options;
1040 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1041 Opts.Verbose = Args.hasArg(OPT_v);
1042 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1043 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1044 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1045 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1046 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1047 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1048 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path);
1049 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
1050 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1051 // -fmodules implies -fmodule-maps
1052 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules);
1053 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
1054 Opts.ModuleCachePruneInterval =
1055 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
1056 Opts.ModuleCachePruneAfter =
1057 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
1058 Opts.ModulesValidateOncePerBuildSession =
1059 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
1060 Opts.BuildSessionTimestamp =
1061 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
1062 Opts.ModulesValidateSystemHeaders =
1063 Args.hasArg(OPT_fmodules_validate_system_headers);
1065 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro),
1066 ie = Args.filtered_end();
1068 StringRef MacroDef = (*it)->getValue();
1069 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first);
1072 // Add -I..., -F..., and -index-header-map options in order.
1073 bool IsIndexHeaderMap = false;
1074 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1075 OPT_index_header_map),
1076 ie = Args.filtered_end(); it != ie; ++it) {
1077 if ((*it)->getOption().matches(OPT_index_header_map)) {
1078 // -index-header-map applies to the next -I or -F.
1079 IsIndexHeaderMap = true;
1083 frontend::IncludeDirGroup Group
1084 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1086 Opts.AddPath((*it)->getValue(), Group,
1087 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1088 IsIndexHeaderMap = false;
1091 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1092 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1093 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1094 OPT_iwithprefixbefore),
1095 ie = Args.filtered_end(); it != ie; ++it) {
1097 if (A->getOption().matches(OPT_iprefix))
1098 Prefix = A->getValue();
1099 else if (A->getOption().matches(OPT_iwithprefix))
1100 Opts.AddPath(Prefix.str() + A->getValue(),
1101 frontend::After, false, true);
1103 Opts.AddPath(Prefix.str() + A->getValue(),
1104 frontend::Angled, false, true);
1107 for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1108 ie = Args.filtered_end(); it != ie; ++it)
1109 Opts.AddPath((*it)->getValue(), frontend::After, false, true);
1110 for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1111 ie = Args.filtered_end(); it != ie; ++it)
1112 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true);
1113 for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1114 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1115 Opts.AddPath((*it)->getValue(), frontend::System, false,
1116 !(*it)->getOption().matches(OPT_iwithsysroot));
1117 for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1118 ie = Args.filtered_end(); it != ie; ++it)
1119 Opts.AddPath((*it)->getValue(), frontend::System, true, true);
1121 // Add the paths for the various language specific isystem flags.
1122 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1123 ie = Args.filtered_end(); it != ie; ++it)
1124 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true);
1125 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1126 ie = Args.filtered_end(); it != ie; ++it)
1127 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true);
1128 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1129 ie = Args.filtered_end(); it != ie; ++it)
1130 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true);
1131 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1132 ie = Args.filtered_end(); it != ie; ++it)
1133 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true);
1135 // Add the internal paths from a driver that detects standard include paths.
1136 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1137 OPT_internal_externc_isystem),
1138 E = Args.filtered_end();
1140 frontend::IncludeDirGroup Group = frontend::System;
1141 if ((*I)->getOption().matches(OPT_internal_externc_isystem))
1142 Group = frontend::ExternCSystem;
1143 Opts.AddPath((*I)->getValue(), Group, false, true);
1146 // Add the path prefixes which are implicitly treated as being system headers.
1147 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix,
1148 OPT_no_system_header_prefix),
1149 E = Args.filtered_end();
1151 Opts.AddSystemHeaderPrefix(
1152 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix));
1154 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay),
1155 E = Args.filtered_end(); I != E; ++I)
1156 Opts.AddVFSOverlayFile((*I)->getValue());
1159 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1160 LangStandard::Kind LangStd) {
1161 // Set some properties which depend solely on the input kind; it would be nice
1162 // to move these to the language standard, and have the driver resolve the
1163 // input kind + language standard.
1165 Opts.AsmPreprocessor = 1;
1166 } else if (IK == IK_ObjC ||
1168 IK == IK_PreprocessedObjC ||
1169 IK == IK_PreprocessedObjCXX) {
1170 Opts.ObjC1 = Opts.ObjC2 = 1;
1173 if (LangStd == LangStandard::lang_unspecified) {
1174 // Based on the base language, pick one.
1179 llvm_unreachable("Invalid input kind!");
1181 LangStd = LangStandard::lang_opencl;
1184 LangStd = LangStandard::lang_cuda;
1188 case IK_PreprocessedC:
1190 case IK_PreprocessedObjC:
1191 LangStd = LangStandard::lang_gnu11;
1194 case IK_PreprocessedCXX:
1196 case IK_PreprocessedObjCXX:
1197 LangStd = LangStandard::lang_gnucxx98;
1202 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1203 Opts.LineComment = Std.hasLineComments();
1204 Opts.C99 = Std.isC99();
1205 Opts.C11 = Std.isC11();
1206 Opts.CPlusPlus = Std.isCPlusPlus();
1207 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1208 Opts.CPlusPlus14 = Std.isCPlusPlus14();
1209 Opts.CPlusPlus1z = Std.isCPlusPlus1z();
1210 Opts.Digraphs = Std.hasDigraphs();
1211 Opts.GNUMode = Std.isGNUMode();
1212 Opts.GNUInline = !Std.isC99();
1213 Opts.HexFloats = Std.hasHexFloats();
1214 Opts.ImplicitInt = Std.hasImplicitInt();
1216 // Set OpenCL Version.
1217 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL;
1218 if (LangStd == LangStandard::lang_opencl)
1219 Opts.OpenCLVersion = 100;
1220 else if (LangStd == LangStandard::lang_opencl11)
1221 Opts.OpenCLVersion = 110;
1222 else if (LangStd == LangStandard::lang_opencl12)
1223 Opts.OpenCLVersion = 120;
1224 else if (LangStd == LangStandard::lang_opencl20)
1225 Opts.OpenCLVersion = 200;
1227 // OpenCL has some additional defaults.
1230 Opts.CXXOperatorNames = 1;
1231 Opts.LaxVectorConversions = 0;
1232 Opts.DefaultFPContract = 1;
1233 Opts.NativeHalfType = 1;
1236 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA;
1238 // OpenCL and C++ both have bool, true, false keywords.
1239 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1241 // OpenCL has half keyword
1242 Opts.Half = Opts.OpenCL;
1244 // C++ has wchar_t keyword.
1245 Opts.WChar = Opts.CPlusPlus;
1247 Opts.GNUKeywords = Opts.GNUMode;
1248 Opts.CXXOperatorNames = Opts.CPlusPlus;
1250 Opts.DollarIdents = !Opts.AsmPreprocessor;
1252 // C++14 onwards has sized global deallocation functions.
1253 Opts.SizedDeallocation = Opts.CPlusPlus14;
1256 /// Attempt to parse a visibility value out of the given argument.
1257 static Visibility parseVisibility(Arg *arg, ArgList &args,
1258 DiagnosticsEngine &diags) {
1259 StringRef value = arg->getValue();
1260 if (value == "default") {
1261 return DefaultVisibility;
1262 } else if (value == "hidden") {
1263 return HiddenVisibility;
1264 } else if (value == "protected") {
1265 // FIXME: diagnose if target does not support protected visibility
1266 return ProtectedVisibility;
1269 diags.Report(diag::err_drv_invalid_value)
1270 << arg->getAsString(args) << value;
1271 return DefaultVisibility;
1274 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) {
1275 auto Arg = Args.getLastArg(OPT_fms_compatibility_version);
1279 // The MSC versioning scheme involves four versioning components:
1285 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value.
1286 // Additionally, the value may be provided in the form of a more readable
1287 // MM.mm.bbbbb.pp version.
1289 // Unfortunately, due to the bit-width limitations, we cannot currently encode
1290 // the value for the patch level.
1292 unsigned VC[4] = {0};
1293 StringRef Value = Arg->getValue();
1294 SmallVector<StringRef, 4> Components;
1296 Value.split(Components, ".", llvm::array_lengthof(VC));
1297 for (unsigned CI = 0,
1298 CE = std::min(Components.size(), llvm::array_lengthof(VC));
1300 if (Components[CI].getAsInteger(10, VC[CI])) {
1301 Diags.Report(diag::err_drv_invalid_value)
1302 << Arg->getAsString(Args) << Value;
1307 // FIXME we cannot encode the patch level
1308 return VC[0] * 10000000 + VC[1] * 100000 + VC[2];
1311 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1312 DiagnosticsEngine &Diags) {
1313 // FIXME: Cleanup per-file based stuff.
1314 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1315 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1316 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1317 #define LANGSTANDARD(id, name, desc, features) \
1318 .Case(name, LangStandard::lang_##id)
1319 #include "clang/Frontend/LangStandards.def"
1320 .Default(LangStandard::lang_unspecified);
1321 if (LangStd == LangStandard::lang_unspecified)
1322 Diags.Report(diag::err_drv_invalid_value)
1323 << A->getAsString(Args) << A->getValue();
1325 // Valid standard, check to make sure language and standard are
1327 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1331 case IK_PreprocessedC:
1332 case IK_PreprocessedObjC:
1333 if (!(Std.isC89() || Std.isC99()))
1334 Diags.Report(diag::err_drv_argument_not_allowed_with)
1335 << A->getAsString(Args) << "C/ObjC";
1339 case IK_PreprocessedCXX:
1340 case IK_PreprocessedObjCXX:
1341 if (!Std.isCPlusPlus())
1342 Diags.Report(diag::err_drv_argument_not_allowed_with)
1343 << A->getAsString(Args) << "C++/ObjC++";
1347 Diags.Report(diag::err_drv_argument_not_allowed_with)
1348 << A->getAsString(Args) << "OpenCL";
1351 if (!Std.isCPlusPlus())
1352 Diags.Report(diag::err_drv_argument_not_allowed_with)
1353 << A->getAsString(Args) << "CUDA";
1361 // -cl-std only applies for OpenCL language standards.
1362 // Override the -std option in this case.
1363 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1364 LangStandard::Kind OpenCLLangStd
1365 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1366 .Case("CL", LangStandard::lang_opencl)
1367 .Case("CL1.1", LangStandard::lang_opencl11)
1368 .Case("CL1.2", LangStandard::lang_opencl12)
1369 .Case("CL2.0", LangStandard::lang_opencl20)
1370 .Default(LangStandard::lang_unspecified);
1372 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1373 Diags.Report(diag::err_drv_invalid_value)
1374 << A->getAsString(Args) << A->getValue();
1377 LangStd = OpenCLLangStd;
1380 CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1382 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1383 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1384 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1385 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1386 // name, as it doesn't seem a useful distinction.
1387 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1390 if (Args.hasArg(OPT_fno_operator_names))
1391 Opts.CXXOperatorNames = 0;
1393 if (Args.hasArg(OPT_fcuda_is_device))
1394 Opts.CUDAIsDevice = 1;
1397 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1398 StringRef value = arg->getValue();
1399 if (Opts.ObjCRuntime.tryParse(value))
1400 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1403 if (Args.hasArg(OPT_fobjc_gc_only))
1404 Opts.setGC(LangOptions::GCOnly);
1405 else if (Args.hasArg(OPT_fobjc_gc))
1406 Opts.setGC(LangOptions::HybridGC);
1407 else if (Args.hasArg(OPT_fobjc_arc)) {
1408 Opts.ObjCAutoRefCount = 1;
1409 if (!Opts.ObjCRuntime.allowsARC())
1410 Diags.Report(diag::err_arc_unsupported_on_runtime);
1412 // Only set ObjCARCWeak if ARC is enabled.
1413 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1414 Opts.ObjCARCWeak = 1;
1416 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak();
1419 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1420 Opts.ObjCInferRelatedResultType = 0;
1422 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
1423 Opts.ObjCSubscriptingLegacyRuntime =
1424 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
1427 if (Args.hasArg(OPT_fgnu89_inline))
1430 if (Args.hasArg(OPT_fapple_kext)) {
1431 if (!Opts.CPlusPlus)
1432 Diags.Report(diag::warn_c_kext);
1437 if (Args.hasArg(OPT_print_ivar_layout))
1438 Opts.ObjCGCBitmapPrint = 1;
1439 if (Args.hasArg(OPT_fno_constant_cfstrings))
1440 Opts.NoConstantCFStrings = 1;
1442 if (Args.hasArg(OPT_faltivec))
1445 if (Args.hasArg(OPT_pthread))
1446 Opts.POSIXThreads = 1;
1448 // The value-visibility mode defaults to "default".
1449 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
1450 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
1452 Opts.setValueVisibilityMode(DefaultVisibility);
1455 // The type-visibility mode defaults to the value-visibility mode.
1456 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
1457 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
1459 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
1462 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1463 Opts.InlineVisibilityHidden = 1;
1465 if (Args.hasArg(OPT_ftrapv)) {
1466 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1467 // Set the handler, if one is specified.
1468 Opts.OverflowHandler =
1469 Args.getLastArgValue(OPT_ftrapv_handler);
1471 else if (Args.hasArg(OPT_fwrapv))
1472 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1474 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
1475 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
1476 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
1477 Opts.MSCompatibilityVersion = parseMSCVersion(Args, Diags);
1479 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1480 // is specified, or -std is set to a conforming mode.
1481 // Trigraphs are disabled by default in c++1z onwards.
1482 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z;
1484 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
1486 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1487 OPT_fno_dollars_in_identifiers,
1489 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1490 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
1491 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1492 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1493 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1495 if (Args.hasArg(OPT_fno_lax_vector_conversions))
1496 Opts.LaxVectorConversions = 0;
1497 if (Args.hasArg(OPT_fno_threadsafe_statics))
1498 Opts.ThreadsafeStatics = 0;
1499 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1500 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1501 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1502 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1503 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1505 Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1506 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
1507 Opts.Blocks = Args.hasArg(OPT_fblocks);
1508 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1509 Opts.Modules = Args.hasArg(OPT_fmodules);
1510 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
1511 Opts.ModulesDeclUse =
1512 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
1513 Opts.ModulesSearchAll = Opts.Modules &&
1514 !Args.hasArg(OPT_fno_modules_search_all) &&
1515 Args.hasArg(OPT_fmodules_search_all);
1516 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
1517 Opts.ModulesImplicitMaps = Args.hasFlag(OPT_fmodules_implicit_maps,
1518 OPT_fno_modules_implicit_maps, true);
1519 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
1520 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
1521 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
1522 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1523 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1524 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1525 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
1526 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1527 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation);
1528 Opts.DefineSizedDeallocation = Opts.SizedDeallocation &&
1529 Args.hasArg(OPT_fdefine_sized_deallocation);
1530 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1531 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1532 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1533 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
1534 Opts.InstantiationDepth =
1535 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags);
1537 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
1538 Opts.ConstexprCallDepth =
1539 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
1540 Opts.ConstexprStepLimit =
1541 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
1542 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
1543 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1544 Opts.NumLargeByValueCopy =
1545 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
1546 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1547 Opts.ObjCConstantStringClass =
1548 Args.getLastArgValue(OPT_fconstant_string_class);
1549 Opts.ObjCDefaultSynthProperties =
1550 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
1551 Opts.EncodeExtendedBlockSig =
1552 Args.hasArg(OPT_fencode_extended_block_signature);
1553 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1554 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
1555 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
1556 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1557 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags);
1558 Opts.Static = Args.hasArg(OPT_static_define);
1559 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1560 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
1561 || Args.hasArg(OPT_fdump_record_layouts);
1562 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1563 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1564 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1565 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1566 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1567 Opts.MRTD = Args.hasArg(OPT_mrtd);
1568 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1569 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1570 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1571 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1572 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
1573 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
1574 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1575 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1576 Opts.ImplementationOfModule =
1577 Args.getLastArgValue(OPT_fmodule_implementation_of);
1578 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature);
1579 Opts.NativeHalfType = Opts.NativeHalfType;
1580 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns);
1581 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm);
1583 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() &&
1584 Opts.CurrentModule != Opts.ImplementationOfModule) {
1585 Diags.Report(diag::err_conflicting_module_names)
1586 << Opts.CurrentModule << Opts.ImplementationOfModule;
1589 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
1590 switch (llvm::StringSwitch<unsigned>(A->getValue())
1591 .Case("target", LangOptions::ASMM_Target)
1592 .Case("no", LangOptions::ASMM_Off)
1593 .Case("yes", LangOptions::ASMM_On)
1596 Diags.Report(diag::err_drv_invalid_value)
1597 << "-faddress-space-map-mangling=" << A->getValue();
1599 case LangOptions::ASMM_Target:
1600 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
1602 case LangOptions::ASMM_On:
1603 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
1605 case LangOptions::ASMM_Off:
1606 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
1611 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
1612 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
1613 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
1616 LangOptions::PPTMK_FullGeneralitySingleInheritance)
1618 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
1620 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
1621 .Default(LangOptions::PPTMK_BestCase);
1622 if (InheritanceModel == LangOptions::PPTMK_BestCase)
1623 Diags.Report(diag::err_drv_invalid_value)
1624 << "-fms-memptr-rep=" << A->getValue();
1626 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
1629 // Check if -fopenmp= is specified.
1630 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) {
1631 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue())
1632 .Case("libiomp5", true)
1636 // Record whether the __DEPRECATED define was requested.
1637 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1638 OPT_fno_deprecated_macro,
1641 // FIXME: Eliminate this dependency.
1642 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
1643 OptSize = getOptimizationLevelSize(Args);
1644 Opts.Optimize = Opt != 0;
1645 Opts.OptimizeSize = OptSize != 0;
1647 // This is the __NO_INLINE__ define, which just depends on things like the
1648 // optimization level and -fno-inline, not actually whether the backend has
1649 // inlining enabled.
1650 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
1652 Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
1653 Args.hasArg(OPT_cl_fast_relaxed_math);
1654 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
1655 Args.hasArg(OPT_cl_finite_math_only) ||
1656 Args.hasArg(OPT_cl_fast_relaxed_math);
1658 Opts.RetainCommentsFromSystemHeaders =
1659 Args.hasArg(OPT_fretain_comments_from_system_headers);
1661 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1664 Diags.Report(diag::err_drv_invalid_value)
1665 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1667 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1668 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
1669 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
1670 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
1673 // Parse -fsanitize= arguments.
1674 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
1675 Diags, Opts.Sanitize);
1676 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
1677 Opts.SanitizeAddressFieldPadding =
1678 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
1679 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist);
1682 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1683 FileManager &FileMgr,
1684 DiagnosticsEngine &Diags) {
1685 using namespace options;
1686 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1687 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1688 if (const Arg *A = Args.getLastArg(OPT_token_cache))
1689 Opts.TokenCache = A->getValue();
1691 Opts.TokenCache = Opts.ImplicitPTHInclude;
1692 Opts.UsePredefines = !Args.hasArg(OPT_undef);
1693 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1694 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1696 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1697 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1698 ie = Args.filtered_end(); it != ie; ++it) {
1700 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
1703 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1704 StringRef Value(A->getValue());
1705 size_t Comma = Value.find(',');
1707 unsigned EndOfLine = 0;
1709 if (Comma == StringRef::npos ||
1710 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1711 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1712 Diags.Report(diag::err_drv_preamble_format);
1714 Opts.PrecompiledPreambleBytes.first = Bytes;
1715 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1719 // Add macros from the command line.
1720 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1721 ie = Args.filtered_end(); it != ie; ++it) {
1722 if ((*it)->getOption().matches(OPT_D))
1723 Opts.addMacroDef((*it)->getValue());
1725 Opts.addMacroUndef((*it)->getValue());
1728 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1730 // Add the ordered list of -includes.
1731 for (arg_iterator it = Args.filtered_begin(OPT_include),
1732 ie = Args.filtered_end(); it != ie; ++it) {
1734 Opts.Includes.push_back(A->getValue());
1737 for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1738 ie = Args.filtered_end(); it != ie; ++it) {
1740 Opts.ChainedIncludes.push_back(A->getValue());
1743 // Include 'altivec.h' if -faltivec option present
1744 if (Args.hasArg(OPT_faltivec))
1745 Opts.Includes.push_back("altivec.h");
1747 for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1748 ie = Args.filtered_end(); it != ie; ++it) {
1750 std::pair<StringRef,StringRef> Split =
1751 StringRef(A->getValue()).split(';');
1753 if (Split.second.empty()) {
1754 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1758 Opts.addRemappedFile(Split.first, Split.second);
1761 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1762 StringRef Name = A->getValue();
1763 unsigned Library = llvm::StringSwitch<unsigned>(Name)
1764 .Case("libc++", ARCXX_libcxx)
1765 .Case("libstdc++", ARCXX_libstdcxx)
1766 .Case("none", ARCXX_nolib)
1769 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1771 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1775 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1777 frontend::ActionKind Action) {
1778 using namespace options;
1781 case frontend::ASTDeclList:
1782 case frontend::ASTDump:
1783 case frontend::ASTPrint:
1784 case frontend::ASTView:
1785 case frontend::EmitAssembly:
1786 case frontend::EmitBC:
1787 case frontend::EmitHTML:
1788 case frontend::EmitLLVM:
1789 case frontend::EmitLLVMOnly:
1790 case frontend::EmitCodeGenOnly:
1791 case frontend::EmitObj:
1792 case frontend::FixIt:
1793 case frontend::GenerateModule:
1794 case frontend::GeneratePCH:
1795 case frontend::GeneratePTH:
1796 case frontend::ParseSyntaxOnly:
1797 case frontend::ModuleFileInfo:
1798 case frontend::VerifyPCH:
1799 case frontend::PluginAction:
1800 case frontend::PrintDeclContext:
1801 case frontend::RewriteObjC:
1802 case frontend::RewriteTest:
1803 case frontend::RunAnalysis:
1804 case frontend::MigrateSource:
1808 case frontend::DumpRawTokens:
1809 case frontend::DumpTokens:
1810 case frontend::InitOnly:
1811 case frontend::PrintPreamble:
1812 case frontend::PrintPreprocessedInput:
1813 case frontend::RewriteMacros:
1814 case frontend::RunPreprocessorOnly:
1815 Opts.ShowCPP = !Args.hasArg(OPT_dM);
1819 Opts.ShowComments = Args.hasArg(OPT_C);
1820 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1821 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1822 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1823 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
1826 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1827 using namespace options;
1828 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1829 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1830 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
1831 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
1832 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1833 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1835 // Use the default target triple if unspecified.
1836 if (Opts.Triple.empty())
1837 Opts.Triple = llvm::sys::getDefaultTargetTriple();
1840 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1841 const char *const *ArgBegin,
1842 const char *const *ArgEnd,
1843 DiagnosticsEngine &Diags) {
1844 bool Success = true;
1846 // Parse the arguments.
1847 std::unique_ptr<OptTable> Opts(createDriverOptTable());
1848 const unsigned IncludedFlagsBitmask = options::CC1Option;
1849 unsigned MissingArgIndex, MissingArgCount;
1850 std::unique_ptr<InputArgList> Args(
1851 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount,
1852 IncludedFlagsBitmask));
1854 // Check for missing argument error.
1855 if (MissingArgCount) {
1856 Diags.Report(diag::err_drv_missing_argument)
1857 << Args->getArgString(MissingArgIndex) << MissingArgCount;
1861 // Issue errors on unknown arguments.
1862 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1863 ie = Args->filtered_end(); it != ie; ++it) {
1864 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1868 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success;
1869 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
1870 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1871 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
1873 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args);
1874 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1875 // FIXME: We shouldn't have to pass the DashX option around here
1876 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1877 ParseTargetArgs(Res.getTargetOpts(), *Args);
1878 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags,
1879 Res.getTargetOpts()) && Success;
1880 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1881 if (DashX != IK_AST && DashX != IK_LLVM_IR) {
1882 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
1883 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
1884 Res.getLangOpts()->ObjCExceptions = 1;
1886 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1887 // PCH file and find the original header name. Remove the need to do that in
1888 // ParsePreprocessorArgs and remove the FileManager
1889 // parameters from the function and the "FileManager.h" #include.
1890 FileManager FileMgr(Res.getFileSystemOpts());
1891 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1892 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args,
1893 Res.getFrontendOpts().ProgramAction);
1899 class ModuleSignature {
1900 SmallVector<uint64_t, 16> Data;
1905 ModuleSignature() : CurBit(0), CurValue(0) { }
1907 void add(uint64_t Value, unsigned Bits);
1908 void add(StringRef Value);
1911 llvm::APInt getAsInteger() const;
1915 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
1916 CurValue |= Value << CurBit;
1917 if (CurBit + NumBits < 64) {
1922 // Add the current word.
1923 Data.push_back(CurValue);
1926 CurValue = Value >> (64-CurBit);
1929 CurBit = (CurBit+NumBits) & 63;
1932 void ModuleSignature::flush() {
1936 Data.push_back(CurValue);
1941 void ModuleSignature::add(StringRef Value) {
1942 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
1946 llvm::APInt ModuleSignature::getAsInteger() const {
1947 return llvm::APInt(Data.size() * 64, Data);
1950 std::string CompilerInvocation::getModuleHash() const {
1951 // Note: For QoI reasons, the things we use as a hash here should all be
1952 // dumped via the -module-info flag.
1953 using llvm::hash_code;
1954 using llvm::hash_value;
1955 using llvm::hash_combine;
1957 // Start the signature with the compiler version.
1958 // FIXME: We'd rather use something more cryptographically sound than
1959 // CityHash, but this will do for now.
1960 hash_code code = hash_value(getClangFullRepositoryVersion());
1962 // Extend the signature with the language options
1963 #define LANGOPT(Name, Bits, Default, Description) \
1964 code = hash_combine(code, LangOpts->Name);
1965 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1966 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
1967 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
1968 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
1969 #include "clang/Basic/LangOptions.def"
1971 // Extend the signature with the target options.
1972 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
1974 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
1975 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
1977 // Extend the signature with preprocessor options.
1978 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
1979 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
1980 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
1982 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
1983 I = getPreprocessorOpts().Macros.begin(),
1984 IEnd = getPreprocessorOpts().Macros.end();
1986 // If we're supposed to ignore this macro for the purposes of modules,
1987 // don't put it into the hash.
1988 if (!hsOpts.ModulesIgnoreMacros.empty()) {
1989 // Check whether we're ignoring this macro.
1990 StringRef MacroDef = I->first;
1991 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first))
1995 code = hash_combine(code, I->first, I->second);
1998 // Extend the signature with the sysroot.
1999 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes,
2000 hsOpts.UseStandardSystemIncludes,
2001 hsOpts.UseStandardCXXIncludes,
2003 code = hash_combine(code, hsOpts.ResourceDir);
2005 // Extend the signature with the user build path.
2006 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
2008 // Darwin-specific hack: if we have a sysroot, use the contents and
2009 // modification time of
2010 // $sysroot/System/Library/CoreServices/SystemVersion.plist
2011 // as part of the module hash.
2012 if (!hsOpts.Sysroot.empty()) {
2013 SmallString<128> systemVersionFile;
2014 systemVersionFile += hsOpts.Sysroot;
2015 llvm::sys::path::append(systemVersionFile, "System");
2016 llvm::sys::path::append(systemVersionFile, "Library");
2017 llvm::sys::path::append(systemVersionFile, "CoreServices");
2018 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist");
2020 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer =
2021 llvm::MemoryBuffer::getFile(systemVersionFile.str());
2023 code = hash_combine(code, buffer.get()->getBuffer());
2025 struct stat statBuf;
2026 if (stat(systemVersionFile.c_str(), &statBuf) == 0)
2027 code = hash_combine(code, statBuf.st_mtime);
2032 // The LockFileManager cannot tell when processes from another host are
2033 // running, so mangle the hostname in to the module hash to separate them.
2036 if (gethostname(hostname, 255) == 0) {
2037 // Forcibly null-terminate the result, since POSIX doesn't require that
2038 // truncation result in an error or that truncated names be null-terminated.
2039 hostname[sizeof(hostname)-1] = 0;
2040 code = hash_combine(code, StringRef(hostname));
2042 // Ignore failures in gethostname() by not including the hostname in the hash.
2045 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
2050 template<typename IntTy>
2051 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
2053 DiagnosticsEngine *Diags) {
2054 IntTy Res = Default;
2055 if (Arg *A = Args.getLastArg(Id)) {
2056 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
2058 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
2066 // Declared in clang/Frontend/Utils.h.
2067 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
2068 DiagnosticsEngine *Diags) {
2069 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
2072 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
2074 DiagnosticsEngine *Diags) {
2075 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
2078 void BuryPointer(const void *Ptr) {
2079 // This function may be called only a small fixed amount of times per each
2080 // invocation, otherwise we do actually have a leak which we want to report.
2081 // If this function is called more than kGraveYardMaxSize times, the pointers
2082 // will not be properly buried and a leak detector will report a leak, which
2083 // is what we want in such case.
2084 static const size_t kGraveYardMaxSize = 16;
2085 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2086 static std::atomic<unsigned> GraveYardSize;
2087 unsigned Idx = GraveYardSize++;
2088 if (Idx >= kGraveYardMaxSize)
2090 GraveYard[Idx] = Ptr;
2093 IntrusiveRefCntPtr<vfs::FileSystem>
2094 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2095 DiagnosticsEngine &Diags) {
2096 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2097 return vfs::getRealFileSystem();
2099 IntrusiveRefCntPtr<vfs::OverlayFileSystem>
2100 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem()));
2101 // earlier vfs files are on the bottom
2102 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2103 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2104 llvm::MemoryBuffer::getFile(File);
2106 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2107 return IntrusiveRefCntPtr<vfs::FileSystem>();
2110 IntrusiveRefCntPtr<vfs::FileSystem> FS =
2111 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr);
2113 Diags.Report(diag::err_invalid_vfs_overlay) << File;
2114 return IntrusiveRefCntPtr<vfs::FileSystem>();
2116 Overlay->pushOverlay(FS);
2120 } // end namespace clang