1 //===--- CompilerInvocation.cpp -------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "clang/Frontend/CompilerInvocation.h" 11 #include "clang/Basic/FileManager.h" 12 #include "clang/Basic/Version.h" 13 #include "clang/Driver/DriverDiagnostic.h" 14 #include "clang/Driver/Options.h" 15 #include "clang/Driver/Util.h" 16 #include "clang/Frontend/FrontendDiagnostic.h" 17 #include "clang/Frontend/LangStandard.h" 18 #include "clang/Frontend/Utils.h" 19 #include "clang/Lex/HeaderSearchOptions.h" 20 #include "clang/Serialization/ASTReader.h" 21 #include "llvm/ADT/Hashing.h" 22 #include "llvm/ADT/SmallVector.h" 23 #include "llvm/ADT/STLExtras.h" 24 #include "llvm/ADT/StringExtras.h" 25 #include "llvm/ADT/StringSwitch.h" 26 #include "llvm/ADT/Triple.h" 27 #include "llvm/Option/Arg.h" 28 #include "llvm/Option/ArgList.h" 29 #include "llvm/Option/OptTable.h" 30 #include "llvm/Option/Option.h" 31 #include "llvm/Support/CodeGen.h" 32 #include "llvm/Support/ErrorHandling.h" 33 #include "llvm/Support/FileSystem.h" 34 #include "llvm/Support/Host.h" 35 #include "llvm/Support/Path.h" 36 #include "llvm/Support/Process.h" 37 #include <atomic> 38 #include <memory> 39 #include <sys/stat.h> 40 #include <system_error> 41 using namespace clang; 42 43 //===----------------------------------------------------------------------===// 44 // Initialization. 45 //===----------------------------------------------------------------------===// 46 47 CompilerInvocationBase::CompilerInvocationBase() 48 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 49 DiagnosticOpts(new DiagnosticOptions()), 50 HeaderSearchOpts(new HeaderSearchOptions()), 51 PreprocessorOpts(new PreprocessorOptions()) {} 52 53 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 54 : RefCountedBase<CompilerInvocation>(), 55 LangOpts(new LangOptions(*X.getLangOpts())), 56 TargetOpts(new TargetOptions(X.getTargetOpts())), 57 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 58 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 59 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 60 61 CompilerInvocationBase::~CompilerInvocationBase() {} 62 63 //===----------------------------------------------------------------------===// 64 // Deserialization (from args) 65 //===----------------------------------------------------------------------===// 66 67 using namespace clang::driver; 68 using namespace clang::driver::options; 69 using namespace llvm::opt; 70 71 // 72 73 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 74 DiagnosticsEngine &Diags) { 75 unsigned DefaultOpt = 0; 76 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 77 DefaultOpt = 2; 78 79 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 80 if (A->getOption().matches(options::OPT_O0)) 81 return 0; 82 83 if (A->getOption().matches(options::OPT_Ofast)) 84 return 3; 85 86 assert (A->getOption().matches(options::OPT_O)); 87 88 StringRef S(A->getValue()); 89 if (S == "s" || S == "z" || S.empty()) 90 return 2; 91 92 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 93 } 94 95 return DefaultOpt; 96 } 97 98 static unsigned getOptimizationLevelSize(ArgList &Args) { 99 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 100 if (A->getOption().matches(options::OPT_O)) { 101 switch (A->getValue()[0]) { 102 default: 103 return 0; 104 case 's': 105 return 1; 106 case 'z': 107 return 2; 108 } 109 } 110 } 111 return 0; 112 } 113 114 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 115 OptSpecifier GroupWithValue, 116 std::vector<std::string> &Diagnostics) { 117 for (Arg *A : Args.filtered(Group)) { 118 if (A->getOption().getKind() == Option::FlagClass) { 119 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 120 // its name (minus the "W" or "R" at the beginning) to the warning list. 121 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 122 } else if (A->getOption().matches(GroupWithValue)) { 123 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 124 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 125 } else { 126 // Otherwise, add its value (for OPT_W_Joined and similar). 127 for (const char *Arg : A->getValues()) 128 Diagnostics.push_back(Arg); 129 } 130 } 131 } 132 133 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 134 DiagnosticsEngine &Diags) { 135 using namespace options; 136 bool Success = true; 137 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 138 StringRef Name = A->getValue(); 139 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 140 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 141 .Case(CMDFLAG, NAME##Model) 142 #include "clang/StaticAnalyzer/Core/Analyses.def" 143 .Default(NumStores); 144 if (Value == NumStores) { 145 Diags.Report(diag::err_drv_invalid_value) 146 << A->getAsString(Args) << Name; 147 Success = false; 148 } else { 149 Opts.AnalysisStoreOpt = Value; 150 } 151 } 152 153 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 154 StringRef Name = A->getValue(); 155 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 156 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 157 .Case(CMDFLAG, NAME##Model) 158 #include "clang/StaticAnalyzer/Core/Analyses.def" 159 .Default(NumConstraints); 160 if (Value == NumConstraints) { 161 Diags.Report(diag::err_drv_invalid_value) 162 << A->getAsString(Args) << Name; 163 Success = false; 164 } else { 165 Opts.AnalysisConstraintsOpt = Value; 166 } 167 } 168 169 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 170 StringRef Name = A->getValue(); 171 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 172 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 173 .Case(CMDFLAG, PD_##NAME) 174 #include "clang/StaticAnalyzer/Core/Analyses.def" 175 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 176 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 177 Diags.Report(diag::err_drv_invalid_value) 178 << A->getAsString(Args) << Name; 179 Success = false; 180 } else { 181 Opts.AnalysisDiagOpt = Value; 182 } 183 } 184 185 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 186 StringRef Name = A->getValue(); 187 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 188 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 189 .Case(CMDFLAG, NAME) 190 #include "clang/StaticAnalyzer/Core/Analyses.def" 191 .Default(NumPurgeModes); 192 if (Value == NumPurgeModes) { 193 Diags.Report(diag::err_drv_invalid_value) 194 << A->getAsString(Args) << Name; 195 Success = false; 196 } else { 197 Opts.AnalysisPurgeOpt = Value; 198 } 199 } 200 201 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 202 StringRef Name = A->getValue(); 203 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 204 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 205 .Case(CMDFLAG, NAME) 206 #include "clang/StaticAnalyzer/Core/Analyses.def" 207 .Default(NumInliningModes); 208 if (Value == NumInliningModes) { 209 Diags.Report(diag::err_drv_invalid_value) 210 << A->getAsString(Args) << Name; 211 Success = false; 212 } else { 213 Opts.InliningMode = Value; 214 } 215 } 216 217 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 218 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 219 220 Opts.visualizeExplodedGraphWithGraphViz = 221 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 222 Opts.visualizeExplodedGraphWithUbiGraph = 223 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 224 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 225 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 226 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 227 Opts.AnalyzeNestedBlocks = 228 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 229 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 230 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 231 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 232 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 233 Opts.maxBlockVisitOnPath = 234 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 235 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 236 Opts.InlineMaxStackDepth = 237 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 238 Opts.InlineMaxStackDepth, Diags); 239 240 Opts.CheckersControlList.clear(); 241 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 242 OPT_analyzer_disable_checker), 243 ie = Args.filtered_end(); it != ie; ++it) { 244 const Arg *A = *it; 245 A->claim(); 246 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 247 // We can have a list of comma separated checker names, e.g: 248 // '-analyzer-checker=cocoa,unix' 249 StringRef checkerList = A->getValue(); 250 SmallVector<StringRef, 4> checkers; 251 checkerList.split(checkers, ","); 252 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 253 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 254 } 255 256 // Go through the analyzer configuration options. 257 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 258 ie = Args.filtered_end(); it != ie; ++it) { 259 const Arg *A = *it; 260 A->claim(); 261 // We can have a list of comma separated config names, e.g: 262 // '-analyzer-config key1=val1,key2=val2' 263 StringRef configList = A->getValue(); 264 SmallVector<StringRef, 4> configVals; 265 configList.split(configVals, ","); 266 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 267 StringRef key, val; 268 std::tie(key, val) = configVals[i].split("="); 269 if (val.empty()) { 270 Diags.Report(SourceLocation(), 271 diag::err_analyzer_config_no_value) << configVals[i]; 272 Success = false; 273 break; 274 } 275 if (val.find('=') != StringRef::npos) { 276 Diags.Report(SourceLocation(), 277 diag::err_analyzer_config_multiple_values) 278 << configVals[i]; 279 Success = false; 280 break; 281 } 282 Opts.Config[key] = val; 283 } 284 } 285 286 return Success; 287 } 288 289 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 290 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 291 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 292 return true; 293 } 294 295 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 296 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 297 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 298 } 299 300 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 301 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 302 StringRef Value = A->getValue(); 303 if (Value == "small" || Value == "kernel" || Value == "medium" || 304 Value == "large") 305 return Value; 306 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 307 } 308 return "default"; 309 } 310 311 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 312 /// It returns a pointer to the newly generated Regex instance. 313 static std::shared_ptr<llvm::Regex> 314 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 315 Arg *RpassArg) { 316 StringRef Val = RpassArg->getValue(); 317 std::string RegexError; 318 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 319 if (!Pattern->isValid(RegexError)) { 320 Diags.Report(diag::err_drv_optimization_remark_pattern) 321 << RegexError << RpassArg->getAsString(Args); 322 Pattern.reset(); 323 } 324 return Pattern; 325 } 326 327 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 328 DiagnosticsEngine &Diags, 329 const TargetOptions &TargetOpts) { 330 using namespace options; 331 bool Success = true; 332 333 Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 334 // TODO: This could be done in Driver 335 unsigned MaxOptLevel = 3; 336 if (Opts.OptimizationLevel > MaxOptLevel) { 337 // If the optimization level is not supported, fall back on the default optimization 338 Diags.Report(diag::warn_drv_optimization_value) 339 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 340 Opts.OptimizationLevel = MaxOptLevel; 341 } 342 343 // We must always run at least the always inlining pass. 344 Opts.setInlining( 345 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 346 : CodeGenOptions::OnlyAlwaysInlining); 347 // -fno-inline-functions overrides OptimizationLevel > 1. 348 Opts.NoInline = Args.hasArg(OPT_fno_inline); 349 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 350 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 351 352 if (Args.hasArg(OPT_gline_tables_only)) { 353 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 354 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) || 355 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) { 356 bool Default = false; 357 // Until dtrace (via CTF) and LLDB can deal with distributed debug info, 358 // Darwin and FreeBSD default to standalone/full debug info. 359 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() || 360 llvm::Triple(TargetOpts.Triple).isOSFreeBSD()) 361 Default = true; 362 363 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default)) 364 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 365 else 366 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 367 } 368 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 369 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 370 if (Args.hasArg(OPT_gdwarf_2)) 371 Opts.DwarfVersion = 2; 372 else if (Args.hasArg(OPT_gdwarf_3)) 373 Opts.DwarfVersion = 3; 374 else if (Args.hasArg(OPT_gdwarf_4)) 375 Opts.DwarfVersion = 4; 376 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo) 377 // Default Dwarf version is 4 if we are generating debug information. 378 Opts.DwarfVersion = 4; 379 380 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 381 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 382 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 383 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 384 OPT_fuse_register_sized_bitfield_access); 385 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 386 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 387 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 388 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 389 Opts.NoCommon = Args.hasArg(OPT_fno_common); 390 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 391 Opts.OptimizeSize = getOptimizationLevelSize(Args); 392 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 393 Args.hasArg(OPT_ffreestanding)); 394 Opts.UnrollLoops = 395 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 396 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 397 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 398 399 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 400 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 401 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 402 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate); 403 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); 404 Opts.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping); 405 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 406 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 407 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 408 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 409 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 410 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 411 Opts.CodeModel = getCodeModel(Args, Diags); 412 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 413 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 414 Opts.DisableFree = Args.hasArg(OPT_disable_free); 415 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 416 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 417 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 418 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 419 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 420 Args.hasArg(OPT_cl_finite_math_only)|| 421 Args.hasArg(OPT_cl_fast_relaxed_math)); 422 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 423 Args.hasArg(OPT_cl_finite_math_only)|| 424 Args.hasArg(OPT_cl_fast_relaxed_math)); 425 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 426 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 427 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 428 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 429 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 430 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 431 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 432 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 433 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 434 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 435 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 436 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 437 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 438 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 439 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 440 Args.hasArg(OPT_cl_fast_relaxed_math); 441 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 442 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 443 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 444 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 445 Diags.Report(diag::err_drv_invalid_value) 446 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 447 << Opts.ThreadModel; 448 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 449 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 450 451 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 452 OPT_fno_function_sections, false); 453 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 454 OPT_fno_data_sections, false); 455 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 456 457 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 458 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 459 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 460 461 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 462 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 463 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 464 465 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 466 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 467 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 468 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 469 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 470 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 471 Opts.CoverageNoFunctionNamesInData = 472 Args.hasArg(OPT_coverage_no_function_names_in_data); 473 if (Args.hasArg(OPT_coverage_version_EQ)) { 474 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 475 if (CoverageVersion.size() != 4) { 476 Diags.Report(diag::err_drv_invalid_value) 477 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 478 << CoverageVersion; 479 } else { 480 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 481 } 482 } 483 } 484 485 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 486 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 487 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 488 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 489 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 490 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 491 Opts.SanitizeCoverage = 492 getLastArgIntValue(Args, OPT_fsanitize_coverage, 0, Diags); 493 Opts.SanitizeMemoryTrackOrigins = 494 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 495 Opts.SanitizeUndefinedTrapOnError = 496 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 497 Opts.SSPBufferSize = 498 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 499 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 500 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 501 StringRef Val = A->getValue(); 502 unsigned StackAlignment = Opts.StackAlignment; 503 Val.getAsInteger(10, StackAlignment); 504 Opts.StackAlignment = StackAlignment; 505 } 506 507 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 508 StringRef Name = A->getValue(); 509 unsigned Method = llvm::StringSwitch<unsigned>(Name) 510 .Case("legacy", CodeGenOptions::Legacy) 511 .Case("non-legacy", CodeGenOptions::NonLegacy) 512 .Case("mixed", CodeGenOptions::Mixed) 513 .Default(~0U); 514 if (Method == ~0U) { 515 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 516 Success = false; 517 } else { 518 Opts.setObjCDispatchMethod( 519 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 520 } 521 } 522 523 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 524 StringRef Name = A->getValue(); 525 unsigned Model = llvm::StringSwitch<unsigned>(Name) 526 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 527 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 528 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 529 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 530 .Default(~0U); 531 if (Model == ~0U) { 532 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 533 Success = false; 534 } else { 535 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 536 } 537 } 538 539 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 540 StringRef Val = A->getValue(); 541 if (Val == "fast") 542 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 543 else if (Val == "on") 544 Opts.setFPContractMode(CodeGenOptions::FPC_On); 545 else if (Val == "off") 546 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 547 else 548 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 549 } 550 551 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 552 if (A->getOption().matches(OPT_fpcc_struct_return)) { 553 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 554 } else { 555 assert(A->getOption().matches(OPT_freg_struct_return)); 556 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 557 } 558 } 559 560 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 561 bool NeedLocTracking = false; 562 563 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 564 Opts.OptimizationRemarkPattern = 565 GenerateOptimizationRemarkRegex(Diags, Args, A); 566 NeedLocTracking = true; 567 } 568 569 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 570 Opts.OptimizationRemarkMissedPattern = 571 GenerateOptimizationRemarkRegex(Diags, Args, A); 572 NeedLocTracking = true; 573 } 574 575 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 576 Opts.OptimizationRemarkAnalysisPattern = 577 GenerateOptimizationRemarkRegex(Diags, Args, A); 578 NeedLocTracking = true; 579 } 580 581 // If the user requested to use a sample profile for PGO, then the 582 // backend will need to track source location information so the profile 583 // can be incorporated into the IR. 584 if (!Opts.SampleProfileFile.empty()) 585 NeedLocTracking = true; 586 587 // If the user requested a flag that requires source locations available in 588 // the backend, make sure that the backend tracks source location information. 589 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 590 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 591 592 return Success; 593 } 594 595 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 596 ArgList &Args) { 597 using namespace options; 598 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 599 Opts.Targets = Args.getAllArgValues(OPT_MT); 600 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 601 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 602 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 603 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 604 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 605 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 606 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 607 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 608 Opts.ModuleDependencyOutputDir = 609 Args.getLastArgValue(OPT_module_dependency_dir); 610 } 611 612 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 613 DiagnosticsEngine *Diags) { 614 using namespace options; 615 bool Success = true; 616 617 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 618 if (Arg *A = 619 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 620 Opts.DiagnosticSerializationFile = A->getValue(); 621 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 622 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 623 Opts.Pedantic = Args.hasArg(OPT_pedantic); 624 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 625 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 626 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 627 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 628 OPT_fno_show_column, 629 /*Default=*/true); 630 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 631 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 632 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 633 634 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 635 636 // Default behavior is to not to show note include stacks. 637 Opts.ShowNoteIncludeStack = false; 638 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 639 OPT_fno_diagnostics_show_note_include_stack)) 640 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 641 Opts.ShowNoteIncludeStack = true; 642 643 StringRef ShowOverloads = 644 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 645 if (ShowOverloads == "best") 646 Opts.setShowOverloads(Ovl_Best); 647 else if (ShowOverloads == "all") 648 Opts.setShowOverloads(Ovl_All); 649 else { 650 Success = false; 651 if (Diags) 652 Diags->Report(diag::err_drv_invalid_value) 653 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 654 << ShowOverloads; 655 } 656 657 StringRef ShowCategory = 658 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 659 if (ShowCategory == "none") 660 Opts.ShowCategories = 0; 661 else if (ShowCategory == "id") 662 Opts.ShowCategories = 1; 663 else if (ShowCategory == "name") 664 Opts.ShowCategories = 2; 665 else { 666 Success = false; 667 if (Diags) 668 Diags->Report(diag::err_drv_invalid_value) 669 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 670 << ShowCategory; 671 } 672 673 StringRef Format = 674 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 675 if (Format == "clang") 676 Opts.setFormat(DiagnosticOptions::Clang); 677 else if (Format == "msvc") 678 Opts.setFormat(DiagnosticOptions::Msvc); 679 else if (Format == "msvc-fallback") { 680 Opts.setFormat(DiagnosticOptions::Msvc); 681 Opts.CLFallbackMode = true; 682 } else if (Format == "vi") 683 Opts.setFormat(DiagnosticOptions::Vi); 684 else { 685 Success = false; 686 if (Diags) 687 Diags->Report(diag::err_drv_invalid_value) 688 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 689 << Format; 690 } 691 692 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 693 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 694 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 695 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 696 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 697 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 698 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 699 Opts.MacroBacktraceLimit = 700 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 701 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 702 Opts.TemplateBacktraceLimit = getLastArgIntValue( 703 Args, OPT_ftemplate_backtrace_limit, 704 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 705 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 706 Args, OPT_fconstexpr_backtrace_limit, 707 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 708 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 709 DiagnosticOptions::DefaultTabStop, Diags); 710 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 711 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 712 if (Diags) 713 Diags->Report(diag::warn_ignoring_ftabstop_value) 714 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 715 } 716 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 717 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 718 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 719 720 return Success; 721 } 722 723 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 724 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 725 } 726 727 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 728 DiagnosticsEngine &Diags) { 729 using namespace options; 730 Opts.ProgramAction = frontend::ParseSyntaxOnly; 731 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 732 switch (A->getOption().getID()) { 733 default: 734 llvm_unreachable("Invalid option in group!"); 735 case OPT_ast_list: 736 Opts.ProgramAction = frontend::ASTDeclList; break; 737 case OPT_ast_dump: 738 case OPT_ast_dump_lookups: 739 Opts.ProgramAction = frontend::ASTDump; break; 740 case OPT_ast_print: 741 Opts.ProgramAction = frontend::ASTPrint; break; 742 case OPT_ast_view: 743 Opts.ProgramAction = frontend::ASTView; break; 744 case OPT_dump_raw_tokens: 745 Opts.ProgramAction = frontend::DumpRawTokens; break; 746 case OPT_dump_tokens: 747 Opts.ProgramAction = frontend::DumpTokens; break; 748 case OPT_S: 749 Opts.ProgramAction = frontend::EmitAssembly; break; 750 case OPT_emit_llvm_bc: 751 Opts.ProgramAction = frontend::EmitBC; break; 752 case OPT_emit_html: 753 Opts.ProgramAction = frontend::EmitHTML; break; 754 case OPT_emit_llvm: 755 Opts.ProgramAction = frontend::EmitLLVM; break; 756 case OPT_emit_llvm_only: 757 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 758 case OPT_emit_codegen_only: 759 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 760 case OPT_emit_obj: 761 Opts.ProgramAction = frontend::EmitObj; break; 762 case OPT_fixit_EQ: 763 Opts.FixItSuffix = A->getValue(); 764 // fall-through! 765 case OPT_fixit: 766 Opts.ProgramAction = frontend::FixIt; break; 767 case OPT_emit_module: 768 Opts.ProgramAction = frontend::GenerateModule; break; 769 case OPT_emit_pch: 770 Opts.ProgramAction = frontend::GeneratePCH; break; 771 case OPT_emit_pth: 772 Opts.ProgramAction = frontend::GeneratePTH; break; 773 case OPT_init_only: 774 Opts.ProgramAction = frontend::InitOnly; break; 775 case OPT_fsyntax_only: 776 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 777 case OPT_module_file_info: 778 Opts.ProgramAction = frontend::ModuleFileInfo; break; 779 case OPT_verify_pch: 780 Opts.ProgramAction = frontend::VerifyPCH; break; 781 case OPT_print_decl_contexts: 782 Opts.ProgramAction = frontend::PrintDeclContext; break; 783 case OPT_print_preamble: 784 Opts.ProgramAction = frontend::PrintPreamble; break; 785 case OPT_E: 786 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 787 case OPT_rewrite_macros: 788 Opts.ProgramAction = frontend::RewriteMacros; break; 789 case OPT_rewrite_objc: 790 Opts.ProgramAction = frontend::RewriteObjC; break; 791 case OPT_rewrite_test: 792 Opts.ProgramAction = frontend::RewriteTest; break; 793 case OPT_analyze: 794 Opts.ProgramAction = frontend::RunAnalysis; break; 795 case OPT_migrate: 796 Opts.ProgramAction = frontend::MigrateSource; break; 797 case OPT_Eonly: 798 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 799 } 800 } 801 802 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 803 Opts.Plugins.push_back(A->getValue(0)); 804 Opts.ProgramAction = frontend::PluginAction; 805 Opts.ActionName = A->getValue(); 806 807 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 808 end = Args.filtered_end(); it != end; ++it) { 809 if ((*it)->getValue(0) == Opts.ActionName) 810 Opts.PluginArgs.push_back((*it)->getValue(1)); 811 } 812 } 813 814 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 815 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 816 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 817 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 818 end = Args.filtered_end(); it != end; ++it) { 819 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 820 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 821 } 822 } 823 824 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 825 Opts.CodeCompletionAt = 826 ParsedSourceLocation::FromString(A->getValue()); 827 if (Opts.CodeCompletionAt.FileName.empty()) 828 Diags.Report(diag::err_drv_invalid_value) 829 << A->getAsString(Args) << A->getValue(); 830 } 831 Opts.DisableFree = Args.hasArg(OPT_disable_free); 832 833 Opts.OutputFile = Args.getLastArgValue(OPT_o); 834 Opts.Plugins = Args.getAllArgValues(OPT_load); 835 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 836 Opts.ShowHelp = Args.hasArg(OPT_help); 837 Opts.ShowStats = Args.hasArg(OPT_print_stats); 838 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 839 Opts.ShowVersion = Args.hasArg(OPT_version); 840 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 841 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 842 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 843 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 844 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 845 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 846 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 847 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 848 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 849 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 850 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 851 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 852 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 853 854 Opts.CodeCompleteOpts.IncludeMacros 855 = Args.hasArg(OPT_code_completion_macros); 856 Opts.CodeCompleteOpts.IncludeCodePatterns 857 = Args.hasArg(OPT_code_completion_patterns); 858 Opts.CodeCompleteOpts.IncludeGlobals 859 = !Args.hasArg(OPT_no_code_completion_globals); 860 Opts.CodeCompleteOpts.IncludeBriefComments 861 = Args.hasArg(OPT_code_completion_brief_comments); 862 863 Opts.OverrideRecordLayoutsFile 864 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 865 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 866 OPT_arcmt_modify, 867 OPT_arcmt_migrate)) { 868 switch (A->getOption().getID()) { 869 default: 870 llvm_unreachable("missed a case"); 871 case OPT_arcmt_check: 872 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 873 break; 874 case OPT_arcmt_modify: 875 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 876 break; 877 case OPT_arcmt_migrate: 878 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 879 break; 880 } 881 } 882 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 883 Opts.ARCMTMigrateReportOut 884 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 885 Opts.ARCMTMigrateEmitARCErrors 886 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 887 888 if (Args.hasArg(OPT_objcmt_migrate_literals)) 889 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 890 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 891 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 892 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 893 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 894 if (Args.hasArg(OPT_objcmt_migrate_property)) 895 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 896 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 897 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 898 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 899 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 900 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 901 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 902 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 903 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 904 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 905 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 906 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 907 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 908 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 909 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 910 if (Args.hasArg(OPT_objcmt_atomic_property)) 911 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 912 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 913 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 914 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 915 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 916 if (Args.hasArg(OPT_objcmt_migrate_all)) 917 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 918 919 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 920 921 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 922 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 923 Diags.Report(diag::err_drv_argument_not_allowed_with) 924 << "ARC migration" << "ObjC migration"; 925 } 926 927 InputKind DashX = IK_None; 928 if (const Arg *A = Args.getLastArg(OPT_x)) { 929 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 930 .Case("c", IK_C) 931 .Case("cl", IK_OpenCL) 932 .Case("cuda", IK_CUDA) 933 .Case("c++", IK_CXX) 934 .Case("objective-c", IK_ObjC) 935 .Case("objective-c++", IK_ObjCXX) 936 .Case("cpp-output", IK_PreprocessedC) 937 .Case("assembler-with-cpp", IK_Asm) 938 .Case("c++-cpp-output", IK_PreprocessedCXX) 939 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 940 .Case("objc-cpp-output", IK_PreprocessedObjC) 941 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 942 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 943 .Case("c-header", IK_C) 944 .Case("cl-header", IK_OpenCL) 945 .Case("objective-c-header", IK_ObjC) 946 .Case("c++-header", IK_CXX) 947 .Case("objective-c++-header", IK_ObjCXX) 948 .Cases("ast", "pcm", IK_AST) 949 .Case("ir", IK_LLVM_IR) 950 .Default(IK_None); 951 if (DashX == IK_None) 952 Diags.Report(diag::err_drv_invalid_value) 953 << A->getAsString(Args) << A->getValue(); 954 } 955 956 // '-' is the default input if none is given. 957 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 958 Opts.Inputs.clear(); 959 if (Inputs.empty()) 960 Inputs.push_back("-"); 961 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 962 InputKind IK = DashX; 963 if (IK == IK_None) { 964 IK = FrontendOptions::getInputKindForExtension( 965 StringRef(Inputs[i]).rsplit('.').second); 966 // FIXME: Remove this hack. 967 if (i == 0) 968 DashX = IK; 969 } 970 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 971 } 972 973 return DashX; 974 } 975 976 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 977 void *MainAddr) { 978 SmallString<128> P(llvm::sys::fs::getMainExecutable(Argv0, MainAddr)); 979 980 if (!P.empty()) { 981 llvm::sys::path::remove_filename(P); // Remove /clang from foo/bin/clang 982 llvm::sys::path::remove_filename(P); // Remove /bin from foo/bin 983 984 // Get foo/lib/clang/<version>/include 985 llvm::sys::path::append(P, "lib", "clang", CLANG_VERSION_STRING); 986 } 987 988 return P.str(); 989 } 990 991 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 992 using namespace options; 993 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 994 Opts.Verbose = Args.hasArg(OPT_v); 995 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 996 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 997 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 998 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 999 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1000 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1001 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1002 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1003 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1004 // -fmodules implies -fmodule-maps 1005 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules); 1006 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1007 Opts.ModuleCachePruneInterval = 1008 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1009 Opts.ModuleCachePruneAfter = 1010 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1011 Opts.ModulesValidateOncePerBuildSession = 1012 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1013 Opts.BuildSessionTimestamp = 1014 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1015 Opts.ModulesValidateSystemHeaders = 1016 Args.hasArg(OPT_fmodules_validate_system_headers); 1017 1018 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 1019 ie = Args.filtered_end(); 1020 it != ie; ++it) { 1021 StringRef MacroDef = (*it)->getValue(); 1022 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1023 } 1024 1025 // Add -I..., -F..., and -index-header-map options in order. 1026 bool IsIndexHeaderMap = false; 1027 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 1028 OPT_index_header_map), 1029 ie = Args.filtered_end(); it != ie; ++it) { 1030 if ((*it)->getOption().matches(OPT_index_header_map)) { 1031 // -index-header-map applies to the next -I or -F. 1032 IsIndexHeaderMap = true; 1033 continue; 1034 } 1035 1036 frontend::IncludeDirGroup Group 1037 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 1038 1039 Opts.AddPath((*it)->getValue(), Group, 1040 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 1041 IsIndexHeaderMap = false; 1042 } 1043 1044 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1045 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1046 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 1047 OPT_iwithprefixbefore), 1048 ie = Args.filtered_end(); it != ie; ++it) { 1049 const Arg *A = *it; 1050 if (A->getOption().matches(OPT_iprefix)) 1051 Prefix = A->getValue(); 1052 else if (A->getOption().matches(OPT_iwithprefix)) 1053 Opts.AddPath(Prefix.str() + A->getValue(), 1054 frontend::After, false, true); 1055 else 1056 Opts.AddPath(Prefix.str() + A->getValue(), 1057 frontend::Angled, false, true); 1058 } 1059 1060 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 1061 ie = Args.filtered_end(); it != ie; ++it) 1062 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 1063 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 1064 ie = Args.filtered_end(); it != ie; ++it) 1065 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 1066 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 1067 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 1068 Opts.AddPath((*it)->getValue(), frontend::System, false, 1069 !(*it)->getOption().matches(OPT_iwithsysroot)); 1070 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 1071 ie = Args.filtered_end(); it != ie; ++it) 1072 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 1073 1074 // Add the paths for the various language specific isystem flags. 1075 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 1076 ie = Args.filtered_end(); it != ie; ++it) 1077 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 1078 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 1079 ie = Args.filtered_end(); it != ie; ++it) 1080 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 1081 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 1082 ie = Args.filtered_end(); it != ie; ++it) 1083 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 1084 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 1085 ie = Args.filtered_end(); it != ie; ++it) 1086 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 1087 1088 // Add the internal paths from a driver that detects standard include paths. 1089 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 1090 OPT_internal_externc_isystem), 1091 E = Args.filtered_end(); 1092 I != E; ++I) { 1093 frontend::IncludeDirGroup Group = frontend::System; 1094 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 1095 Group = frontend::ExternCSystem; 1096 Opts.AddPath((*I)->getValue(), Group, false, true); 1097 } 1098 1099 // Add the path prefixes which are implicitly treated as being system headers. 1100 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix, 1101 OPT_no_system_header_prefix), 1102 E = Args.filtered_end(); 1103 I != E; ++I) 1104 Opts.AddSystemHeaderPrefix( 1105 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix)); 1106 1107 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay), 1108 E = Args.filtered_end(); I != E; ++I) 1109 Opts.AddVFSOverlayFile((*I)->getValue()); 1110 } 1111 1112 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1113 LangStandard::Kind LangStd) { 1114 // Set some properties which depend solely on the input kind; it would be nice 1115 // to move these to the language standard, and have the driver resolve the 1116 // input kind + language standard. 1117 if (IK == IK_Asm) { 1118 Opts.AsmPreprocessor = 1; 1119 } else if (IK == IK_ObjC || 1120 IK == IK_ObjCXX || 1121 IK == IK_PreprocessedObjC || 1122 IK == IK_PreprocessedObjCXX) { 1123 Opts.ObjC1 = Opts.ObjC2 = 1; 1124 } 1125 1126 if (LangStd == LangStandard::lang_unspecified) { 1127 // Based on the base language, pick one. 1128 switch (IK) { 1129 case IK_None: 1130 case IK_AST: 1131 case IK_LLVM_IR: 1132 llvm_unreachable("Invalid input kind!"); 1133 case IK_OpenCL: 1134 LangStd = LangStandard::lang_opencl; 1135 break; 1136 case IK_CUDA: 1137 LangStd = LangStandard::lang_cuda; 1138 break; 1139 case IK_Asm: 1140 case IK_C: 1141 case IK_PreprocessedC: 1142 case IK_ObjC: 1143 case IK_PreprocessedObjC: 1144 LangStd = LangStandard::lang_gnu11; 1145 break; 1146 case IK_CXX: 1147 case IK_PreprocessedCXX: 1148 case IK_ObjCXX: 1149 case IK_PreprocessedObjCXX: 1150 LangStd = LangStandard::lang_gnucxx98; 1151 break; 1152 } 1153 } 1154 1155 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1156 Opts.LineComment = Std.hasLineComments(); 1157 Opts.C99 = Std.isC99(); 1158 Opts.C11 = Std.isC11(); 1159 Opts.CPlusPlus = Std.isCPlusPlus(); 1160 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1161 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1162 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1163 Opts.Digraphs = Std.hasDigraphs(); 1164 Opts.GNUMode = Std.isGNUMode(); 1165 Opts.GNUInline = !Std.isC99(); 1166 Opts.HexFloats = Std.hasHexFloats(); 1167 Opts.ImplicitInt = Std.hasImplicitInt(); 1168 1169 // Set OpenCL Version. 1170 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1171 if (LangStd == LangStandard::lang_opencl) 1172 Opts.OpenCLVersion = 100; 1173 else if (LangStd == LangStandard::lang_opencl11) 1174 Opts.OpenCLVersion = 110; 1175 else if (LangStd == LangStandard::lang_opencl12) 1176 Opts.OpenCLVersion = 120; 1177 else if (LangStd == LangStandard::lang_opencl20) 1178 Opts.OpenCLVersion = 200; 1179 1180 // OpenCL has some additional defaults. 1181 if (Opts.OpenCL) { 1182 Opts.AltiVec = 0; 1183 Opts.CXXOperatorNames = 1; 1184 Opts.LaxVectorConversions = 0; 1185 Opts.DefaultFPContract = 1; 1186 Opts.NativeHalfType = 1; 1187 } 1188 1189 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA; 1190 1191 // OpenCL and C++ both have bool, true, false keywords. 1192 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1193 1194 // OpenCL has half keyword 1195 Opts.Half = Opts.OpenCL; 1196 1197 // C++ has wchar_t keyword. 1198 Opts.WChar = Opts.CPlusPlus; 1199 1200 Opts.GNUKeywords = Opts.GNUMode; 1201 Opts.CXXOperatorNames = Opts.CPlusPlus; 1202 1203 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1204 // is specified, or -std is set to a conforming mode. 1205 // Trigraphs are disabled by default in c++1z onwards. 1206 Opts.Trigraphs = !Opts.GNUMode && !Opts.CPlusPlus1z; 1207 1208 Opts.DollarIdents = !Opts.AsmPreprocessor; 1209 1210 // C++14 onwards has sized global deallocation functions. 1211 Opts.SizedDeallocation = Opts.CPlusPlus14; 1212 } 1213 1214 /// Attempt to parse a visibility value out of the given argument. 1215 static Visibility parseVisibility(Arg *arg, ArgList &args, 1216 DiagnosticsEngine &diags) { 1217 StringRef value = arg->getValue(); 1218 if (value == "default") { 1219 return DefaultVisibility; 1220 } else if (value == "hidden") { 1221 return HiddenVisibility; 1222 } else if (value == "protected") { 1223 // FIXME: diagnose if target does not support protected visibility 1224 return ProtectedVisibility; 1225 } 1226 1227 diags.Report(diag::err_drv_invalid_value) 1228 << arg->getAsString(args) << value; 1229 return DefaultVisibility; 1230 } 1231 1232 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) { 1233 auto Arg = Args.getLastArg(OPT_fms_compatibility_version); 1234 if (!Arg) 1235 return 0; 1236 1237 // The MSC versioning scheme involves four versioning components: 1238 // - Major 1239 // - Minor 1240 // - Build 1241 // - Patch 1242 // 1243 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value. 1244 // Additionally, the value may be provided in the form of a more readable 1245 // MM.mm.bbbbb.pp version. 1246 // 1247 // Unfortunately, due to the bit-width limitations, we cannot currently encode 1248 // the value for the patch level. 1249 1250 unsigned VC[4] = {0}; 1251 StringRef Value = Arg->getValue(); 1252 SmallVector<StringRef, 4> Components; 1253 1254 Value.split(Components, ".", llvm::array_lengthof(VC)); 1255 for (unsigned CI = 0, 1256 CE = std::min(Components.size(), llvm::array_lengthof(VC)); 1257 CI < CE; ++CI) { 1258 if (Components[CI].getAsInteger(10, VC[CI])) { 1259 Diags.Report(diag::err_drv_invalid_value) 1260 << Arg->getAsString(Args) << Value; 1261 return 0; 1262 } 1263 } 1264 1265 // FIXME we cannot encode the patch level 1266 return VC[0] * 10000000 + VC[1] * 100000 + VC[2]; 1267 } 1268 1269 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1270 DiagnosticsEngine &Diags) { 1271 // FIXME: Cleanup per-file based stuff. 1272 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1273 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1274 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1275 #define LANGSTANDARD(id, name, desc, features) \ 1276 .Case(name, LangStandard::lang_##id) 1277 #include "clang/Frontend/LangStandards.def" 1278 .Default(LangStandard::lang_unspecified); 1279 if (LangStd == LangStandard::lang_unspecified) 1280 Diags.Report(diag::err_drv_invalid_value) 1281 << A->getAsString(Args) << A->getValue(); 1282 else { 1283 // Valid standard, check to make sure language and standard are 1284 // compatible. 1285 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1286 switch (IK) { 1287 case IK_C: 1288 case IK_ObjC: 1289 case IK_PreprocessedC: 1290 case IK_PreprocessedObjC: 1291 if (!(Std.isC89() || Std.isC99())) 1292 Diags.Report(diag::err_drv_argument_not_allowed_with) 1293 << A->getAsString(Args) << "C/ObjC"; 1294 break; 1295 case IK_CXX: 1296 case IK_ObjCXX: 1297 case IK_PreprocessedCXX: 1298 case IK_PreprocessedObjCXX: 1299 if (!Std.isCPlusPlus()) 1300 Diags.Report(diag::err_drv_argument_not_allowed_with) 1301 << A->getAsString(Args) << "C++/ObjC++"; 1302 break; 1303 case IK_OpenCL: 1304 if (!Std.isC99()) 1305 Diags.Report(diag::err_drv_argument_not_allowed_with) 1306 << A->getAsString(Args) << "OpenCL"; 1307 break; 1308 case IK_CUDA: 1309 if (!Std.isCPlusPlus()) 1310 Diags.Report(diag::err_drv_argument_not_allowed_with) 1311 << A->getAsString(Args) << "CUDA"; 1312 break; 1313 default: 1314 break; 1315 } 1316 } 1317 } 1318 1319 // -cl-std only applies for OpenCL language standards. 1320 // Override the -std option in this case. 1321 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1322 LangStandard::Kind OpenCLLangStd 1323 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1324 .Case("CL", LangStandard::lang_opencl) 1325 .Case("CL1.1", LangStandard::lang_opencl11) 1326 .Case("CL1.2", LangStandard::lang_opencl12) 1327 .Case("CL2.0", LangStandard::lang_opencl20) 1328 .Default(LangStandard::lang_unspecified); 1329 1330 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1331 Diags.Report(diag::err_drv_invalid_value) 1332 << A->getAsString(Args) << A->getValue(); 1333 } 1334 else 1335 LangStd = OpenCLLangStd; 1336 } 1337 1338 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1339 1340 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1341 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1342 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1343 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1344 // name, as it doesn't seem a useful distinction. 1345 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1346 Opts.GNUKeywords); 1347 1348 if (Args.hasArg(OPT_fno_operator_names)) 1349 Opts.CXXOperatorNames = 0; 1350 1351 if (Args.hasArg(OPT_fcuda_is_device)) 1352 Opts.CUDAIsDevice = 1; 1353 1354 if (Opts.ObjC1) { 1355 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1356 StringRef value = arg->getValue(); 1357 if (Opts.ObjCRuntime.tryParse(value)) 1358 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1359 } 1360 1361 if (Args.hasArg(OPT_fobjc_gc_only)) 1362 Opts.setGC(LangOptions::GCOnly); 1363 else if (Args.hasArg(OPT_fobjc_gc)) 1364 Opts.setGC(LangOptions::HybridGC); 1365 else if (Args.hasArg(OPT_fobjc_arc)) { 1366 Opts.ObjCAutoRefCount = 1; 1367 if (!Opts.ObjCRuntime.allowsARC()) 1368 Diags.Report(diag::err_arc_unsupported_on_runtime); 1369 1370 // Only set ObjCARCWeak if ARC is enabled. 1371 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1372 Opts.ObjCARCWeak = 1; 1373 else 1374 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1375 } 1376 1377 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1378 Opts.ObjCInferRelatedResultType = 0; 1379 1380 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1381 Opts.ObjCSubscriptingLegacyRuntime = 1382 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1383 } 1384 1385 if (Args.hasArg(OPT_fgnu89_inline)) 1386 Opts.GNUInline = 1; 1387 1388 if (Args.hasArg(OPT_fapple_kext)) { 1389 if (!Opts.CPlusPlus) 1390 Diags.Report(diag::warn_c_kext); 1391 else 1392 Opts.AppleKext = 1; 1393 } 1394 1395 if (Args.hasArg(OPT_print_ivar_layout)) 1396 Opts.ObjCGCBitmapPrint = 1; 1397 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1398 Opts.NoConstantCFStrings = 1; 1399 1400 if (Args.hasArg(OPT_faltivec)) 1401 Opts.AltiVec = 1; 1402 1403 if (Args.hasArg(OPT_pthread)) 1404 Opts.POSIXThreads = 1; 1405 1406 // The value-visibility mode defaults to "default". 1407 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1408 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1409 } else { 1410 Opts.setValueVisibilityMode(DefaultVisibility); 1411 } 1412 1413 // The type-visibility mode defaults to the value-visibility mode. 1414 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1415 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1416 } else { 1417 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1418 } 1419 1420 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1421 Opts.InlineVisibilityHidden = 1; 1422 1423 if (Args.hasArg(OPT_ftrapv)) { 1424 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1425 // Set the handler, if one is specified. 1426 Opts.OverflowHandler = 1427 Args.getLastArgValue(OPT_ftrapv_handler); 1428 } 1429 else if (Args.hasArg(OPT_fwrapv)) 1430 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1431 1432 if (Args.hasArg(OPT_trigraphs)) 1433 Opts.Trigraphs = 1; 1434 1435 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1436 OPT_fno_dollars_in_identifiers, 1437 Opts.DollarIdents); 1438 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1439 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1440 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1441 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1442 Opts.MSCompatibilityVersion = parseMSCVersion(Args, Diags); 1443 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1444 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1445 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1446 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1447 Opts.ConstStrings); 1448 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1449 Opts.LaxVectorConversions = 0; 1450 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1451 Opts.ThreadsafeStatics = 0; 1452 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1453 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1454 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1455 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1456 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1457 1458 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1459 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1460 Opts.Blocks = Args.hasArg(OPT_fblocks); 1461 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1462 Opts.Modules = Args.hasArg(OPT_fmodules); 1463 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1464 Opts.ModulesDeclUse = 1465 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1466 Opts.ModulesSearchAll = Opts.Modules && 1467 !Args.hasArg(OPT_fno_modules_search_all) && 1468 Args.hasArg(OPT_fmodules_search_all); 1469 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1470 Opts.ModulesImplicitMaps = Args.hasFlag(OPT_fmodules_implicit_maps, 1471 OPT_fno_modules_implicit_maps, true); 1472 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1473 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1474 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1475 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1476 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1477 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1478 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1479 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1480 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation); 1481 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1482 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1483 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1484 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1485 Opts.InstantiationDepth = 1486 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1487 Opts.ArrowDepth = 1488 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1489 Opts.ConstexprCallDepth = 1490 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1491 Opts.ConstexprStepLimit = 1492 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1493 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1494 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1495 Opts.NumLargeByValueCopy = 1496 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1497 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1498 Opts.ObjCConstantStringClass = 1499 Args.getLastArgValue(OPT_fconstant_string_class); 1500 Opts.ObjCDefaultSynthProperties = 1501 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1502 Opts.EncodeExtendedBlockSig = 1503 Args.hasArg(OPT_fencode_extended_block_signature); 1504 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1505 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1506 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1507 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1508 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1509 Opts.Static = Args.hasArg(OPT_static_define); 1510 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1511 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1512 || Args.hasArg(OPT_fdump_record_layouts); 1513 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1514 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1515 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1516 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1517 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1518 Opts.MRTD = Args.hasArg(OPT_mrtd); 1519 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1520 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1521 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1522 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1523 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1524 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1525 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1526 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1527 Opts.ImplementationOfModule = 1528 Args.getLastArgValue(OPT_fmodule_implementation_of); 1529 Opts.NativeHalfType = Opts.NativeHalfType; 1530 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns); 1531 1532 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1533 Opts.CurrentModule != Opts.ImplementationOfModule) { 1534 Diags.Report(diag::err_conflicting_module_names) 1535 << Opts.CurrentModule << Opts.ImplementationOfModule; 1536 } 1537 1538 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1539 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1540 .Case("target", LangOptions::ASMM_Target) 1541 .Case("no", LangOptions::ASMM_Off) 1542 .Case("yes", LangOptions::ASMM_On) 1543 .Default(255)) { 1544 default: 1545 Diags.Report(diag::err_drv_invalid_value) 1546 << "-faddress-space-map-mangling=" << A->getValue(); 1547 break; 1548 case LangOptions::ASMM_Target: 1549 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1550 break; 1551 case LangOptions::ASMM_On: 1552 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1553 break; 1554 case LangOptions::ASMM_Off: 1555 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1556 break; 1557 } 1558 } 1559 1560 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1561 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1562 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1563 A->getValue()) 1564 .Case("single", 1565 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1566 .Case("multiple", 1567 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1568 .Case("virtual", 1569 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1570 .Default(LangOptions::PPTMK_BestCase); 1571 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1572 Diags.Report(diag::err_drv_invalid_value) 1573 << "-fms-memptr-rep=" << A->getValue(); 1574 1575 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1576 } 1577 1578 // Check if -fopenmp= is specified. 1579 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) { 1580 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue()) 1581 .Case("libiomp5", true) 1582 .Default(false); 1583 } 1584 1585 // Record whether the __DEPRECATED define was requested. 1586 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1587 OPT_fno_deprecated_macro, 1588 Opts.Deprecated); 1589 1590 // FIXME: Eliminate this dependency. 1591 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1592 OptSize = getOptimizationLevelSize(Args); 1593 Opts.Optimize = Opt != 0; 1594 Opts.OptimizeSize = OptSize != 0; 1595 1596 // This is the __NO_INLINE__ define, which just depends on things like the 1597 // optimization level and -fno-inline, not actually whether the backend has 1598 // inlining enabled. 1599 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1600 1601 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1602 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1603 1604 Opts.RetainCommentsFromSystemHeaders = 1605 Args.hasArg(OPT_fretain_comments_from_system_headers); 1606 1607 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1608 switch (SSP) { 1609 default: 1610 Diags.Report(diag::err_drv_invalid_value) 1611 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1612 break; 1613 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1614 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1615 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1616 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1617 } 1618 1619 // Parse -fsanitize= arguments. 1620 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1621 for (const auto &Sanitizer : Sanitizers) { 1622 SanitizerKind K = llvm::StringSwitch<SanitizerKind>(Sanitizer) 1623 #define SANITIZER(NAME, ID) .Case(NAME, SanitizerKind::ID) 1624 #include "clang/Basic/Sanitizers.def" 1625 .Default(SanitizerKind::Unknown); 1626 if (K == SanitizerKind::Unknown) 1627 Diags.Report(diag::err_drv_invalid_value) 1628 << "-fsanitize=" << Sanitizer; 1629 else 1630 Opts.Sanitize.set(K, true); 1631 } 1632 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 1633 Opts.SanitizeAddressFieldPadding = 1634 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 1635 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 1636 } 1637 1638 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1639 FileManager &FileMgr, 1640 DiagnosticsEngine &Diags) { 1641 using namespace options; 1642 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1643 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1644 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1645 Opts.TokenCache = A->getValue(); 1646 else 1647 Opts.TokenCache = Opts.ImplicitPTHInclude; 1648 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1649 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1650 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1651 1652 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1653 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1654 ie = Args.filtered_end(); it != ie; ++it) { 1655 const Arg *A = *it; 1656 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1657 } 1658 1659 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1660 StringRef Value(A->getValue()); 1661 size_t Comma = Value.find(','); 1662 unsigned Bytes = 0; 1663 unsigned EndOfLine = 0; 1664 1665 if (Comma == StringRef::npos || 1666 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1667 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1668 Diags.Report(diag::err_drv_preamble_format); 1669 else { 1670 Opts.PrecompiledPreambleBytes.first = Bytes; 1671 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1672 } 1673 } 1674 1675 // Add macros from the command line. 1676 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1677 ie = Args.filtered_end(); it != ie; ++it) { 1678 if ((*it)->getOption().matches(OPT_D)) 1679 Opts.addMacroDef((*it)->getValue()); 1680 else 1681 Opts.addMacroUndef((*it)->getValue()); 1682 } 1683 1684 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1685 1686 // Add the ordered list of -includes. 1687 for (arg_iterator it = Args.filtered_begin(OPT_include), 1688 ie = Args.filtered_end(); it != ie; ++it) { 1689 const Arg *A = *it; 1690 Opts.Includes.push_back(A->getValue()); 1691 } 1692 1693 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1694 ie = Args.filtered_end(); it != ie; ++it) { 1695 const Arg *A = *it; 1696 Opts.ChainedIncludes.push_back(A->getValue()); 1697 } 1698 1699 // Include 'altivec.h' if -faltivec option present 1700 if (Args.hasArg(OPT_faltivec)) 1701 Opts.Includes.push_back("altivec.h"); 1702 1703 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1704 ie = Args.filtered_end(); it != ie; ++it) { 1705 const Arg *A = *it; 1706 std::pair<StringRef,StringRef> Split = 1707 StringRef(A->getValue()).split(';'); 1708 1709 if (Split.second.empty()) { 1710 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1711 continue; 1712 } 1713 1714 Opts.addRemappedFile(Split.first, Split.second); 1715 } 1716 1717 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1718 StringRef Name = A->getValue(); 1719 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1720 .Case("libc++", ARCXX_libcxx) 1721 .Case("libstdc++", ARCXX_libstdcxx) 1722 .Case("none", ARCXX_nolib) 1723 .Default(~0U); 1724 if (Library == ~0U) 1725 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1726 else 1727 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1728 } 1729 } 1730 1731 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1732 ArgList &Args, 1733 frontend::ActionKind Action) { 1734 using namespace options; 1735 1736 switch (Action) { 1737 case frontend::ASTDeclList: 1738 case frontend::ASTDump: 1739 case frontend::ASTPrint: 1740 case frontend::ASTView: 1741 case frontend::EmitAssembly: 1742 case frontend::EmitBC: 1743 case frontend::EmitHTML: 1744 case frontend::EmitLLVM: 1745 case frontend::EmitLLVMOnly: 1746 case frontend::EmitCodeGenOnly: 1747 case frontend::EmitObj: 1748 case frontend::FixIt: 1749 case frontend::GenerateModule: 1750 case frontend::GeneratePCH: 1751 case frontend::GeneratePTH: 1752 case frontend::ParseSyntaxOnly: 1753 case frontend::ModuleFileInfo: 1754 case frontend::VerifyPCH: 1755 case frontend::PluginAction: 1756 case frontend::PrintDeclContext: 1757 case frontend::RewriteObjC: 1758 case frontend::RewriteTest: 1759 case frontend::RunAnalysis: 1760 case frontend::MigrateSource: 1761 Opts.ShowCPP = 0; 1762 break; 1763 1764 case frontend::DumpRawTokens: 1765 case frontend::DumpTokens: 1766 case frontend::InitOnly: 1767 case frontend::PrintPreamble: 1768 case frontend::PrintPreprocessedInput: 1769 case frontend::RewriteMacros: 1770 case frontend::RunPreprocessorOnly: 1771 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1772 break; 1773 } 1774 1775 Opts.ShowComments = Args.hasArg(OPT_C); 1776 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1777 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1778 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1779 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1780 } 1781 1782 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1783 using namespace options; 1784 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1785 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1786 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1787 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1788 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1789 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1790 1791 // Use the default target triple if unspecified. 1792 if (Opts.Triple.empty()) 1793 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1794 } 1795 1796 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1797 const char *const *ArgBegin, 1798 const char *const *ArgEnd, 1799 DiagnosticsEngine &Diags) { 1800 bool Success = true; 1801 1802 // Parse the arguments. 1803 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1804 const unsigned IncludedFlagsBitmask = options::CC1Option; 1805 unsigned MissingArgIndex, MissingArgCount; 1806 std::unique_ptr<InputArgList> Args( 1807 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount, 1808 IncludedFlagsBitmask)); 1809 1810 // Check for missing argument error. 1811 if (MissingArgCount) { 1812 Diags.Report(diag::err_drv_missing_argument) 1813 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1814 Success = false; 1815 } 1816 1817 // Issue errors on unknown arguments. 1818 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1819 ie = Args->filtered_end(); it != ie; ++it) { 1820 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1821 Success = false; 1822 } 1823 1824 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1825 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1826 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1827 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1828 && Success; 1829 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1830 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1831 // FIXME: We shouldn't have to pass the DashX option around here 1832 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1833 ParseTargetArgs(Res.getTargetOpts(), *Args); 1834 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags, 1835 Res.getTargetOpts()) && Success; 1836 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1837 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1838 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1839 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1840 Res.getLangOpts()->ObjCExceptions = 1; 1841 } 1842 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1843 // PCH file and find the original header name. Remove the need to do that in 1844 // ParsePreprocessorArgs and remove the FileManager 1845 // parameters from the function and the "FileManager.h" #include. 1846 FileManager FileMgr(Res.getFileSystemOpts()); 1847 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1848 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1849 Res.getFrontendOpts().ProgramAction); 1850 return Success; 1851 } 1852 1853 namespace { 1854 1855 class ModuleSignature { 1856 SmallVector<uint64_t, 16> Data; 1857 unsigned CurBit; 1858 uint64_t CurValue; 1859 1860 public: 1861 ModuleSignature() : CurBit(0), CurValue(0) { } 1862 1863 void add(uint64_t Value, unsigned Bits); 1864 void add(StringRef Value); 1865 void flush(); 1866 1867 llvm::APInt getAsInteger() const; 1868 }; 1869 } 1870 1871 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1872 CurValue |= Value << CurBit; 1873 if (CurBit + NumBits < 64) { 1874 CurBit += NumBits; 1875 return; 1876 } 1877 1878 // Add the current word. 1879 Data.push_back(CurValue); 1880 1881 if (CurBit) 1882 CurValue = Value >> (64-CurBit); 1883 else 1884 CurValue = 0; 1885 CurBit = (CurBit+NumBits) & 63; 1886 } 1887 1888 void ModuleSignature::flush() { 1889 if (CurBit == 0) 1890 return; 1891 1892 Data.push_back(CurValue); 1893 CurBit = 0; 1894 CurValue = 0; 1895 } 1896 1897 void ModuleSignature::add(StringRef Value) { 1898 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1899 add(*I, 8); 1900 } 1901 1902 llvm::APInt ModuleSignature::getAsInteger() const { 1903 return llvm::APInt(Data.size() * 64, Data); 1904 } 1905 1906 std::string CompilerInvocation::getModuleHash() const { 1907 // Note: For QoI reasons, the things we use as a hash here should all be 1908 // dumped via the -module-info flag. 1909 using llvm::hash_code; 1910 using llvm::hash_value; 1911 using llvm::hash_combine; 1912 1913 // Start the signature with the compiler version. 1914 // FIXME: We'd rather use something more cryptographically sound than 1915 // CityHash, but this will do for now. 1916 hash_code code = hash_value(getClangFullRepositoryVersion()); 1917 1918 // Extend the signature with the language options 1919 #define LANGOPT(Name, Bits, Default, Description) \ 1920 code = hash_combine(code, LangOpts->Name); 1921 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1922 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1923 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1924 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1925 #include "clang/Basic/LangOptions.def" 1926 1927 // Extend the signature with the target options. 1928 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1929 TargetOpts->ABI); 1930 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1931 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1932 1933 // Extend the signature with preprocessor options. 1934 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1935 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1936 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1937 1938 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1939 I = getPreprocessorOpts().Macros.begin(), 1940 IEnd = getPreprocessorOpts().Macros.end(); 1941 I != IEnd; ++I) { 1942 // If we're supposed to ignore this macro for the purposes of modules, 1943 // don't put it into the hash. 1944 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1945 // Check whether we're ignoring this macro. 1946 StringRef MacroDef = I->first; 1947 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1948 continue; 1949 } 1950 1951 code = hash_combine(code, I->first, I->second); 1952 } 1953 1954 // Extend the signature with the sysroot. 1955 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1956 hsOpts.UseStandardSystemIncludes, 1957 hsOpts.UseStandardCXXIncludes, 1958 hsOpts.UseLibcxx); 1959 code = hash_combine(code, hsOpts.ResourceDir); 1960 1961 // Extend the signature with the user build path. 1962 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 1963 1964 // Darwin-specific hack: if we have a sysroot, use the contents and 1965 // modification time of 1966 // $sysroot/System/Library/CoreServices/SystemVersion.plist 1967 // as part of the module hash. 1968 if (!hsOpts.Sysroot.empty()) { 1969 SmallString<128> systemVersionFile; 1970 systemVersionFile += hsOpts.Sysroot; 1971 llvm::sys::path::append(systemVersionFile, "System"); 1972 llvm::sys::path::append(systemVersionFile, "Library"); 1973 llvm::sys::path::append(systemVersionFile, "CoreServices"); 1974 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 1975 1976 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 1977 llvm::MemoryBuffer::getFile(systemVersionFile.str()); 1978 if (buffer) { 1979 code = hash_combine(code, buffer.get()->getBuffer()); 1980 1981 struct stat statBuf; 1982 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 1983 code = hash_combine(code, statBuf.st_mtime); 1984 } 1985 } 1986 1987 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1988 } 1989 1990 namespace clang { 1991 1992 template<typename IntTy> 1993 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 1994 IntTy Default, 1995 DiagnosticsEngine *Diags) { 1996 IntTy Res = Default; 1997 if (Arg *A = Args.getLastArg(Id)) { 1998 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 1999 if (Diags) 2000 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2001 << A->getValue(); 2002 } 2003 } 2004 return Res; 2005 } 2006 2007 2008 // Declared in clang/Frontend/Utils.h. 2009 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2010 DiagnosticsEngine *Diags) { 2011 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2012 } 2013 2014 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2015 uint64_t Default, 2016 DiagnosticsEngine *Diags) { 2017 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2018 } 2019 2020 void BuryPointer(const void *Ptr) { 2021 // This function may be called only a small fixed amount of times per each 2022 // invocation, otherwise we do actually have a leak which we want to report. 2023 // If this function is called more than kGraveYardMaxSize times, the pointers 2024 // will not be properly buried and a leak detector will report a leak, which 2025 // is what we want in such case. 2026 static const size_t kGraveYardMaxSize = 16; 2027 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2028 static std::atomic<unsigned> GraveYardSize; 2029 unsigned Idx = GraveYardSize++; 2030 if (Idx >= kGraveYardMaxSize) 2031 return; 2032 GraveYard[Idx] = Ptr; 2033 } 2034 2035 IntrusiveRefCntPtr<vfs::FileSystem> 2036 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2037 DiagnosticsEngine &Diags) { 2038 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2039 return vfs::getRealFileSystem(); 2040 2041 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2042 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2043 // earlier vfs files are on the bottom 2044 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2045 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2046 llvm::MemoryBuffer::getFile(File); 2047 if (!Buffer) { 2048 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2049 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2050 } 2051 2052 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2053 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr); 2054 if (!FS.get()) { 2055 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2056 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2057 } 2058 Overlay->pushOverlay(FS); 2059 } 2060 return Overlay; 2061 } 2062 } // end namespace clang 2063