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/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" 38 #include <atomic> 39 #include <memory> 40 #include <sys/stat.h> 41 #include <system_error> 42 using namespace clang; 43 44 //===----------------------------------------------------------------------===// 45 // Initialization. 46 //===----------------------------------------------------------------------===// 47 48 CompilerInvocationBase::CompilerInvocationBase() 49 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 50 DiagnosticOpts(new DiagnosticOptions()), 51 HeaderSearchOpts(new HeaderSearchOptions()), 52 PreprocessorOpts(new PreprocessorOptions()) {} 53 54 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 55 : RefCountedBase<CompilerInvocation>(), 56 LangOpts(new LangOptions(*X.getLangOpts())), 57 TargetOpts(new TargetOptions(X.getTargetOpts())), 58 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 59 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 60 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 61 62 CompilerInvocationBase::~CompilerInvocationBase() {} 63 64 //===----------------------------------------------------------------------===// 65 // Deserialization (from args) 66 //===----------------------------------------------------------------------===// 67 68 using namespace clang::driver; 69 using namespace clang::driver::options; 70 using namespace llvm::opt; 71 72 // 73 74 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 75 DiagnosticsEngine &Diags) { 76 unsigned DefaultOpt = 0; 77 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 78 DefaultOpt = 2; 79 80 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 81 if (A->getOption().matches(options::OPT_O0)) 82 return 0; 83 84 if (A->getOption().matches(options::OPT_Ofast)) 85 return 3; 86 87 assert (A->getOption().matches(options::OPT_O)); 88 89 StringRef S(A->getValue()); 90 if (S == "s" || S == "z" || S.empty()) 91 return 2; 92 93 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 94 } 95 96 return DefaultOpt; 97 } 98 99 static unsigned getOptimizationLevelSize(ArgList &Args) { 100 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 101 if (A->getOption().matches(options::OPT_O)) { 102 switch (A->getValue()[0]) { 103 default: 104 return 0; 105 case 's': 106 return 1; 107 case 'z': 108 return 2; 109 } 110 } 111 } 112 return 0; 113 } 114 115 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 116 OptSpecifier GroupWithValue, 117 std::vector<std::string> &Diagnostics) { 118 for (Arg *A : Args.filtered(Group)) { 119 if (A->getOption().getKind() == Option::FlagClass) { 120 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 121 // its name (minus the "W" or "R" at the beginning) to the warning list. 122 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 123 } else if (A->getOption().matches(GroupWithValue)) { 124 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 125 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 126 } else { 127 // Otherwise, add its value (for OPT_W_Joined and similar). 128 for (const char *Arg : A->getValues()) 129 Diagnostics.push_back(Arg); 130 } 131 } 132 } 133 134 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 135 DiagnosticsEngine &Diags) { 136 using namespace options; 137 bool Success = true; 138 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 139 StringRef Name = A->getValue(); 140 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 141 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 142 .Case(CMDFLAG, NAME##Model) 143 #include "clang/StaticAnalyzer/Core/Analyses.def" 144 .Default(NumStores); 145 if (Value == NumStores) { 146 Diags.Report(diag::err_drv_invalid_value) 147 << A->getAsString(Args) << Name; 148 Success = false; 149 } else { 150 Opts.AnalysisStoreOpt = Value; 151 } 152 } 153 154 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 155 StringRef Name = A->getValue(); 156 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 157 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 158 .Case(CMDFLAG, NAME##Model) 159 #include "clang/StaticAnalyzer/Core/Analyses.def" 160 .Default(NumConstraints); 161 if (Value == NumConstraints) { 162 Diags.Report(diag::err_drv_invalid_value) 163 << A->getAsString(Args) << Name; 164 Success = false; 165 } else { 166 Opts.AnalysisConstraintsOpt = Value; 167 } 168 } 169 170 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 171 StringRef Name = A->getValue(); 172 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 173 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 174 .Case(CMDFLAG, PD_##NAME) 175 #include "clang/StaticAnalyzer/Core/Analyses.def" 176 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 177 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 178 Diags.Report(diag::err_drv_invalid_value) 179 << A->getAsString(Args) << Name; 180 Success = false; 181 } else { 182 Opts.AnalysisDiagOpt = Value; 183 } 184 } 185 186 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 187 StringRef Name = A->getValue(); 188 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 189 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 190 .Case(CMDFLAG, NAME) 191 #include "clang/StaticAnalyzer/Core/Analyses.def" 192 .Default(NumPurgeModes); 193 if (Value == NumPurgeModes) { 194 Diags.Report(diag::err_drv_invalid_value) 195 << A->getAsString(Args) << Name; 196 Success = false; 197 } else { 198 Opts.AnalysisPurgeOpt = Value; 199 } 200 } 201 202 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 203 StringRef Name = A->getValue(); 204 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 205 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 206 .Case(CMDFLAG, NAME) 207 #include "clang/StaticAnalyzer/Core/Analyses.def" 208 .Default(NumInliningModes); 209 if (Value == NumInliningModes) { 210 Diags.Report(diag::err_drv_invalid_value) 211 << A->getAsString(Args) << Name; 212 Success = false; 213 } else { 214 Opts.InliningMode = Value; 215 } 216 } 217 218 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 219 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 220 221 Opts.visualizeExplodedGraphWithGraphViz = 222 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 223 Opts.visualizeExplodedGraphWithUbiGraph = 224 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 225 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 226 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 227 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 228 Opts.AnalyzeNestedBlocks = 229 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 230 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 231 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 232 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 233 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 234 Opts.maxBlockVisitOnPath = 235 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 236 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 237 Opts.InlineMaxStackDepth = 238 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 239 Opts.InlineMaxStackDepth, Diags); 240 241 Opts.CheckersControlList.clear(); 242 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 243 OPT_analyzer_disable_checker), 244 ie = Args.filtered_end(); it != ie; ++it) { 245 const Arg *A = *it; 246 A->claim(); 247 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 248 // We can have a list of comma separated checker names, e.g: 249 // '-analyzer-checker=cocoa,unix' 250 StringRef checkerList = A->getValue(); 251 SmallVector<StringRef, 4> checkers; 252 checkerList.split(checkers, ","); 253 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 254 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 255 } 256 257 // Go through the analyzer configuration options. 258 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 259 ie = Args.filtered_end(); it != ie; ++it) { 260 const Arg *A = *it; 261 A->claim(); 262 // We can have a list of comma separated config names, e.g: 263 // '-analyzer-config key1=val1,key2=val2' 264 StringRef configList = A->getValue(); 265 SmallVector<StringRef, 4> configVals; 266 configList.split(configVals, ","); 267 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 268 StringRef key, val; 269 std::tie(key, val) = configVals[i].split("="); 270 if (val.empty()) { 271 Diags.Report(SourceLocation(), 272 diag::err_analyzer_config_no_value) << configVals[i]; 273 Success = false; 274 break; 275 } 276 if (val.find('=') != StringRef::npos) { 277 Diags.Report(SourceLocation(), 278 diag::err_analyzer_config_multiple_values) 279 << configVals[i]; 280 Success = false; 281 break; 282 } 283 Opts.Config[key] = val; 284 } 285 } 286 287 return Success; 288 } 289 290 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 291 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 292 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 293 return true; 294 } 295 296 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 297 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 298 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 299 } 300 301 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 302 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 303 StringRef Value = A->getValue(); 304 if (Value == "small" || Value == "kernel" || Value == "medium" || 305 Value == "large") 306 return Value; 307 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 308 } 309 return "default"; 310 } 311 312 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 313 /// It returns a pointer to the newly generated Regex instance. 314 static std::shared_ptr<llvm::Regex> 315 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 316 Arg *RpassArg) { 317 StringRef Val = RpassArg->getValue(); 318 std::string RegexError; 319 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 320 if (!Pattern->isValid(RegexError)) { 321 Diags.Report(diag::err_drv_optimization_remark_pattern) 322 << RegexError << RpassArg->getAsString(Args); 323 Pattern.reset(); 324 } 325 return Pattern; 326 } 327 328 static void parseSanitizerKinds(StringRef FlagName, 329 const std::vector<std::string> &Sanitizers, 330 DiagnosticsEngine &Diags, SanitizerSet &S) { 331 for (const auto &Sanitizer : Sanitizers) { 332 SanitizerKind K = llvm::StringSwitch<SanitizerKind>(Sanitizer) 333 #define SANITIZER(NAME, ID) .Case(NAME, SanitizerKind::ID) 334 #include "clang/Basic/Sanitizers.def" 335 .Default(SanitizerKind::Unknown); 336 if (K == SanitizerKind::Unknown) 337 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 338 else 339 S.set(K, true); 340 } 341 } 342 343 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 344 DiagnosticsEngine &Diags, 345 const TargetOptions &TargetOpts) { 346 using namespace options; 347 bool Success = true; 348 349 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 350 // TODO: This could be done in Driver 351 unsigned MaxOptLevel = 3; 352 if (OptimizationLevel > MaxOptLevel) { 353 // If the optimization level is not supported, fall back on the default 354 // optimization 355 Diags.Report(diag::warn_drv_optimization_value) 356 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 357 OptimizationLevel = MaxOptLevel; 358 } 359 Opts.OptimizationLevel = OptimizationLevel; 360 361 // We must always run at least the always inlining pass. 362 Opts.setInlining( 363 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 364 : CodeGenOptions::OnlyAlwaysInlining); 365 // -fno-inline-functions overrides OptimizationLevel > 1. 366 Opts.NoInline = Args.hasArg(OPT_fno_inline); 367 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 368 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 369 370 if (Args.hasArg(OPT_gline_tables_only)) { 371 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 372 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) || 373 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) { 374 bool Default = false; 375 // Until dtrace (via CTF) and LLDB can deal with distributed debug info, 376 // Darwin and FreeBSD default to standalone/full debug info. 377 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() || 378 llvm::Triple(TargetOpts.Triple).isOSFreeBSD()) 379 Default = true; 380 381 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default)) 382 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 383 else 384 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 385 } 386 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 387 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 388 if (Args.hasArg(OPT_gdwarf_2)) 389 Opts.DwarfVersion = 2; 390 else if (Args.hasArg(OPT_gdwarf_3)) 391 Opts.DwarfVersion = 3; 392 else if (Args.hasArg(OPT_gdwarf_4)) 393 Opts.DwarfVersion = 4; 394 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo) 395 // Default Dwarf version is 4 if we are generating debug information. 396 Opts.DwarfVersion = 4; 397 398 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 399 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 400 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 401 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 402 OPT_fuse_register_sized_bitfield_access); 403 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 404 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 405 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 406 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 407 Opts.NoCommon = Args.hasArg(OPT_fno_common); 408 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 409 Opts.OptimizeSize = getOptimizationLevelSize(Args); 410 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 411 Args.hasArg(OPT_ffreestanding)); 412 Opts.UnrollLoops = 413 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 414 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 415 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 416 417 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 418 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 419 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 420 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate); 421 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); 422 Opts.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping); 423 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 424 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 425 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 426 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 427 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 428 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 429 Opts.CodeModel = getCodeModel(Args, Diags); 430 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 431 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 432 Opts.DisableFree = Args.hasArg(OPT_disable_free); 433 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 434 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 435 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 436 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 437 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 438 Args.hasArg(OPT_cl_finite_math_only) || 439 Args.hasArg(OPT_cl_fast_relaxed_math)); 440 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 441 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 442 Args.hasArg(OPT_cl_finite_math_only) || 443 Args.hasArg(OPT_cl_fast_relaxed_math)); 444 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros); 445 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 446 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 447 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 448 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 449 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 450 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 451 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 452 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 453 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 454 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 455 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 456 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 457 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 458 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 459 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 460 Args.hasArg(OPT_cl_fast_relaxed_math); 461 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 462 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 463 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 464 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 465 Diags.Report(diag::err_drv_invalid_value) 466 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 467 << Opts.ThreadModel; 468 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 469 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 470 471 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 472 OPT_fno_function_sections, false); 473 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 474 OPT_fno_data_sections, false); 475 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 476 477 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 478 479 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 480 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 481 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 482 483 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 484 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 485 486 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 487 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 488 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 489 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 490 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 491 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 492 Opts.CoverageNoFunctionNamesInData = 493 Args.hasArg(OPT_coverage_no_function_names_in_data); 494 if (Args.hasArg(OPT_coverage_version_EQ)) { 495 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 496 if (CoverageVersion.size() != 4) { 497 Diags.Report(diag::err_drv_invalid_value) 498 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 499 << CoverageVersion; 500 } else { 501 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 502 } 503 } 504 } 505 506 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 507 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 508 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 509 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 510 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 511 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 512 Opts.SanitizeCoverage = 513 getLastArgIntValue(Args, OPT_fsanitize_coverage, 0, Diags); 514 Opts.SanitizeMemoryTrackOrigins = 515 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 516 Opts.SanitizeUndefinedTrapOnError = 517 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 518 Opts.SSPBufferSize = 519 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 520 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 521 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 522 StringRef Val = A->getValue(); 523 unsigned StackAlignment = Opts.StackAlignment; 524 Val.getAsInteger(10, StackAlignment); 525 Opts.StackAlignment = StackAlignment; 526 } 527 528 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 529 StringRef Val = A->getValue(); 530 unsigned StackProbeSize = Opts.StackProbeSize; 531 Val.getAsInteger(0, StackProbeSize); 532 Opts.StackProbeSize = StackProbeSize; 533 } 534 535 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 536 StringRef Name = A->getValue(); 537 unsigned Method = llvm::StringSwitch<unsigned>(Name) 538 .Case("legacy", CodeGenOptions::Legacy) 539 .Case("non-legacy", CodeGenOptions::NonLegacy) 540 .Case("mixed", CodeGenOptions::Mixed) 541 .Default(~0U); 542 if (Method == ~0U) { 543 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 544 Success = false; 545 } else { 546 Opts.setObjCDispatchMethod( 547 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 548 } 549 } 550 551 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 552 StringRef Name = A->getValue(); 553 unsigned Model = llvm::StringSwitch<unsigned>(Name) 554 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 555 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 556 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 557 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 558 .Default(~0U); 559 if (Model == ~0U) { 560 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 561 Success = false; 562 } else { 563 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 564 } 565 } 566 567 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 568 StringRef Val = A->getValue(); 569 if (Val == "fast") 570 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 571 else if (Val == "on") 572 Opts.setFPContractMode(CodeGenOptions::FPC_On); 573 else if (Val == "off") 574 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 575 else 576 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 577 } 578 579 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 580 if (A->getOption().matches(OPT_fpcc_struct_return)) { 581 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 582 } else { 583 assert(A->getOption().matches(OPT_freg_struct_return)); 584 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 585 } 586 } 587 588 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 589 bool NeedLocTracking = false; 590 591 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 592 Opts.OptimizationRemarkPattern = 593 GenerateOptimizationRemarkRegex(Diags, Args, A); 594 NeedLocTracking = true; 595 } 596 597 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 598 Opts.OptimizationRemarkMissedPattern = 599 GenerateOptimizationRemarkRegex(Diags, Args, A); 600 NeedLocTracking = true; 601 } 602 603 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 604 Opts.OptimizationRemarkAnalysisPattern = 605 GenerateOptimizationRemarkRegex(Diags, Args, A); 606 NeedLocTracking = true; 607 } 608 609 // If the user requested to use a sample profile for PGO, then the 610 // backend will need to track source location information so the profile 611 // can be incorporated into the IR. 612 if (!Opts.SampleProfileFile.empty()) 613 NeedLocTracking = true; 614 615 // If the user requested a flag that requires source locations available in 616 // the backend, make sure that the backend tracks source location information. 617 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 618 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 619 620 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 621 622 // Parse -fsanitize-recover= arguments. 623 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 624 parseSanitizerKinds("-fsanitize-recover=", 625 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 626 Opts.SanitizeRecover); 627 628 return Success; 629 } 630 631 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 632 ArgList &Args) { 633 using namespace options; 634 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 635 Opts.Targets = Args.getAllArgValues(OPT_MT); 636 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 637 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 638 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 639 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 640 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 641 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 642 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 643 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 644 Opts.ModuleDependencyOutputDir = 645 Args.getLastArgValue(OPT_module_dependency_dir); 646 } 647 648 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 649 DiagnosticsEngine *Diags) { 650 using namespace options; 651 bool Success = true; 652 653 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 654 if (Arg *A = 655 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 656 Opts.DiagnosticSerializationFile = A->getValue(); 657 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 658 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 659 Opts.Pedantic = Args.hasArg(OPT_pedantic); 660 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 661 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 662 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 663 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 664 OPT_fno_show_column, 665 /*Default=*/true); 666 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 667 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 668 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 669 670 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 671 672 // Default behavior is to not to show note include stacks. 673 Opts.ShowNoteIncludeStack = false; 674 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 675 OPT_fno_diagnostics_show_note_include_stack)) 676 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 677 Opts.ShowNoteIncludeStack = true; 678 679 StringRef ShowOverloads = 680 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 681 if (ShowOverloads == "best") 682 Opts.setShowOverloads(Ovl_Best); 683 else if (ShowOverloads == "all") 684 Opts.setShowOverloads(Ovl_All); 685 else { 686 Success = false; 687 if (Diags) 688 Diags->Report(diag::err_drv_invalid_value) 689 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 690 << ShowOverloads; 691 } 692 693 StringRef ShowCategory = 694 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 695 if (ShowCategory == "none") 696 Opts.ShowCategories = 0; 697 else if (ShowCategory == "id") 698 Opts.ShowCategories = 1; 699 else if (ShowCategory == "name") 700 Opts.ShowCategories = 2; 701 else { 702 Success = false; 703 if (Diags) 704 Diags->Report(diag::err_drv_invalid_value) 705 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 706 << ShowCategory; 707 } 708 709 StringRef Format = 710 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 711 if (Format == "clang") 712 Opts.setFormat(DiagnosticOptions::Clang); 713 else if (Format == "msvc") 714 Opts.setFormat(DiagnosticOptions::MSVC); 715 else if (Format == "msvc-fallback") { 716 Opts.setFormat(DiagnosticOptions::MSVC); 717 Opts.CLFallbackMode = true; 718 } else if (Format == "vi") 719 Opts.setFormat(DiagnosticOptions::Vi); 720 else { 721 Success = false; 722 if (Diags) 723 Diags->Report(diag::err_drv_invalid_value) 724 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 725 << Format; 726 } 727 728 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 729 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 730 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 731 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 732 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 733 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 734 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 735 Opts.MacroBacktraceLimit = 736 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 737 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 738 Opts.TemplateBacktraceLimit = getLastArgIntValue( 739 Args, OPT_ftemplate_backtrace_limit, 740 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 741 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 742 Args, OPT_fconstexpr_backtrace_limit, 743 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 744 Opts.SpellCheckingLimit = getLastArgIntValue( 745 Args, OPT_fspell_checking_limit, 746 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 747 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 748 DiagnosticOptions::DefaultTabStop, Diags); 749 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 750 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 751 if (Diags) 752 Diags->Report(diag::warn_ignoring_ftabstop_value) 753 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 754 } 755 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 756 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 757 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 758 759 return Success; 760 } 761 762 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 763 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 764 } 765 766 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 767 DiagnosticsEngine &Diags) { 768 using namespace options; 769 Opts.ProgramAction = frontend::ParseSyntaxOnly; 770 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 771 switch (A->getOption().getID()) { 772 default: 773 llvm_unreachable("Invalid option in group!"); 774 case OPT_ast_list: 775 Opts.ProgramAction = frontend::ASTDeclList; break; 776 case OPT_ast_dump: 777 case OPT_ast_dump_lookups: 778 Opts.ProgramAction = frontend::ASTDump; break; 779 case OPT_ast_print: 780 Opts.ProgramAction = frontend::ASTPrint; break; 781 case OPT_ast_view: 782 Opts.ProgramAction = frontend::ASTView; break; 783 case OPT_dump_raw_tokens: 784 Opts.ProgramAction = frontend::DumpRawTokens; break; 785 case OPT_dump_tokens: 786 Opts.ProgramAction = frontend::DumpTokens; break; 787 case OPT_S: 788 Opts.ProgramAction = frontend::EmitAssembly; break; 789 case OPT_emit_llvm_bc: 790 Opts.ProgramAction = frontend::EmitBC; break; 791 case OPT_emit_html: 792 Opts.ProgramAction = frontend::EmitHTML; break; 793 case OPT_emit_llvm: 794 Opts.ProgramAction = frontend::EmitLLVM; break; 795 case OPT_emit_llvm_only: 796 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 797 case OPT_emit_codegen_only: 798 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 799 case OPT_emit_obj: 800 Opts.ProgramAction = frontend::EmitObj; break; 801 case OPT_fixit_EQ: 802 Opts.FixItSuffix = A->getValue(); 803 // fall-through! 804 case OPT_fixit: 805 Opts.ProgramAction = frontend::FixIt; break; 806 case OPT_emit_module: 807 Opts.ProgramAction = frontend::GenerateModule; break; 808 case OPT_emit_pch: 809 Opts.ProgramAction = frontend::GeneratePCH; break; 810 case OPT_emit_pth: 811 Opts.ProgramAction = frontend::GeneratePTH; break; 812 case OPT_init_only: 813 Opts.ProgramAction = frontend::InitOnly; break; 814 case OPT_fsyntax_only: 815 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 816 case OPT_module_file_info: 817 Opts.ProgramAction = frontend::ModuleFileInfo; break; 818 case OPT_verify_pch: 819 Opts.ProgramAction = frontend::VerifyPCH; break; 820 case OPT_print_decl_contexts: 821 Opts.ProgramAction = frontend::PrintDeclContext; break; 822 case OPT_print_preamble: 823 Opts.ProgramAction = frontend::PrintPreamble; break; 824 case OPT_E: 825 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 826 case OPT_rewrite_macros: 827 Opts.ProgramAction = frontend::RewriteMacros; break; 828 case OPT_rewrite_objc: 829 Opts.ProgramAction = frontend::RewriteObjC; break; 830 case OPT_rewrite_test: 831 Opts.ProgramAction = frontend::RewriteTest; break; 832 case OPT_analyze: 833 Opts.ProgramAction = frontend::RunAnalysis; break; 834 case OPT_migrate: 835 Opts.ProgramAction = frontend::MigrateSource; break; 836 case OPT_Eonly: 837 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 838 } 839 } 840 841 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 842 Opts.Plugins.push_back(A->getValue(0)); 843 Opts.ProgramAction = frontend::PluginAction; 844 Opts.ActionName = A->getValue(); 845 846 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 847 end = Args.filtered_end(); it != end; ++it) { 848 if ((*it)->getValue(0) == Opts.ActionName) 849 Opts.PluginArgs.push_back((*it)->getValue(1)); 850 } 851 } 852 853 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 854 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 855 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 856 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 857 end = Args.filtered_end(); it != end; ++it) { 858 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 859 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 860 } 861 } 862 863 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 864 Opts.CodeCompletionAt = 865 ParsedSourceLocation::FromString(A->getValue()); 866 if (Opts.CodeCompletionAt.FileName.empty()) 867 Diags.Report(diag::err_drv_invalid_value) 868 << A->getAsString(Args) << A->getValue(); 869 } 870 Opts.DisableFree = Args.hasArg(OPT_disable_free); 871 872 Opts.OutputFile = Args.getLastArgValue(OPT_o); 873 Opts.Plugins = Args.getAllArgValues(OPT_load); 874 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 875 Opts.ShowHelp = Args.hasArg(OPT_help); 876 Opts.ShowStats = Args.hasArg(OPT_print_stats); 877 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 878 Opts.ShowVersion = Args.hasArg(OPT_version); 879 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 880 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 881 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 882 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 883 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 884 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 885 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 886 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 887 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 888 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 889 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 890 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 891 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 892 893 Opts.CodeCompleteOpts.IncludeMacros 894 = Args.hasArg(OPT_code_completion_macros); 895 Opts.CodeCompleteOpts.IncludeCodePatterns 896 = Args.hasArg(OPT_code_completion_patterns); 897 Opts.CodeCompleteOpts.IncludeGlobals 898 = !Args.hasArg(OPT_no_code_completion_globals); 899 Opts.CodeCompleteOpts.IncludeBriefComments 900 = Args.hasArg(OPT_code_completion_brief_comments); 901 902 Opts.OverrideRecordLayoutsFile 903 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 904 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 905 OPT_arcmt_modify, 906 OPT_arcmt_migrate)) { 907 switch (A->getOption().getID()) { 908 default: 909 llvm_unreachable("missed a case"); 910 case OPT_arcmt_check: 911 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 912 break; 913 case OPT_arcmt_modify: 914 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 915 break; 916 case OPT_arcmt_migrate: 917 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 918 break; 919 } 920 } 921 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 922 Opts.ARCMTMigrateReportOut 923 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 924 Opts.ARCMTMigrateEmitARCErrors 925 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 926 927 if (Args.hasArg(OPT_objcmt_migrate_literals)) 928 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 929 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 930 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 931 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 932 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 933 if (Args.hasArg(OPT_objcmt_migrate_property)) 934 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 935 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 936 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 937 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 938 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 939 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 940 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 941 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 942 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 943 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 944 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 945 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 946 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 947 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 948 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 949 if (Args.hasArg(OPT_objcmt_atomic_property)) 950 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 951 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 952 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 953 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 954 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 955 if (Args.hasArg(OPT_objcmt_migrate_all)) 956 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 957 958 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 959 960 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 961 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 962 Diags.Report(diag::err_drv_argument_not_allowed_with) 963 << "ARC migration" << "ObjC migration"; 964 } 965 966 InputKind DashX = IK_None; 967 if (const Arg *A = Args.getLastArg(OPT_x)) { 968 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 969 .Case("c", IK_C) 970 .Case("cl", IK_OpenCL) 971 .Case("cuda", IK_CUDA) 972 .Case("c++", IK_CXX) 973 .Case("objective-c", IK_ObjC) 974 .Case("objective-c++", IK_ObjCXX) 975 .Case("cpp-output", IK_PreprocessedC) 976 .Case("assembler-with-cpp", IK_Asm) 977 .Case("c++-cpp-output", IK_PreprocessedCXX) 978 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 979 .Case("objc-cpp-output", IK_PreprocessedObjC) 980 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 981 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 982 .Case("c-header", IK_C) 983 .Case("cl-header", IK_OpenCL) 984 .Case("objective-c-header", IK_ObjC) 985 .Case("c++-header", IK_CXX) 986 .Case("objective-c++-header", IK_ObjCXX) 987 .Cases("ast", "pcm", IK_AST) 988 .Case("ir", IK_LLVM_IR) 989 .Default(IK_None); 990 if (DashX == IK_None) 991 Diags.Report(diag::err_drv_invalid_value) 992 << A->getAsString(Args) << A->getValue(); 993 } 994 995 // '-' is the default input if none is given. 996 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 997 Opts.Inputs.clear(); 998 if (Inputs.empty()) 999 Inputs.push_back("-"); 1000 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1001 InputKind IK = DashX; 1002 if (IK == IK_None) { 1003 IK = FrontendOptions::getInputKindForExtension( 1004 StringRef(Inputs[i]).rsplit('.').second); 1005 // FIXME: Remove this hack. 1006 if (i == 0) 1007 DashX = IK; 1008 } 1009 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 1010 } 1011 1012 return DashX; 1013 } 1014 1015 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1016 void *MainAddr) { 1017 std::string ClangExecutable = 1018 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1019 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1020 1021 // Compute the path to the resource directory. 1022 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1023 SmallString<128> P(Dir); 1024 if (ClangResourceDir != "") { 1025 llvm::sys::path::append(P, ClangResourceDir); 1026 } else { 1027 StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX); 1028 llvm::sys::path::append(P, "..", Twine("lib") + ClangLibdirSuffix, "clang", 1029 CLANG_VERSION_STRING); 1030 } 1031 1032 return P.str(); 1033 } 1034 1035 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1036 using namespace options; 1037 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1038 Opts.Verbose = Args.hasArg(OPT_v); 1039 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1040 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1041 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1042 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1043 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1044 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1045 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1046 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1047 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1048 // -fmodules implies -fmodule-maps 1049 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules); 1050 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1051 Opts.ModuleCachePruneInterval = 1052 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1053 Opts.ModuleCachePruneAfter = 1054 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1055 Opts.ModulesValidateOncePerBuildSession = 1056 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1057 Opts.BuildSessionTimestamp = 1058 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1059 Opts.ModulesValidateSystemHeaders = 1060 Args.hasArg(OPT_fmodules_validate_system_headers); 1061 1062 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 1063 ie = Args.filtered_end(); 1064 it != ie; ++it) { 1065 StringRef MacroDef = (*it)->getValue(); 1066 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1067 } 1068 1069 // Add -I..., -F..., and -index-header-map options in order. 1070 bool IsIndexHeaderMap = false; 1071 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 1072 OPT_index_header_map), 1073 ie = Args.filtered_end(); it != ie; ++it) { 1074 if ((*it)->getOption().matches(OPT_index_header_map)) { 1075 // -index-header-map applies to the next -I or -F. 1076 IsIndexHeaderMap = true; 1077 continue; 1078 } 1079 1080 frontend::IncludeDirGroup Group 1081 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 1082 1083 Opts.AddPath((*it)->getValue(), Group, 1084 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 1085 IsIndexHeaderMap = false; 1086 } 1087 1088 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1089 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1090 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 1091 OPT_iwithprefixbefore), 1092 ie = Args.filtered_end(); it != ie; ++it) { 1093 const Arg *A = *it; 1094 if (A->getOption().matches(OPT_iprefix)) 1095 Prefix = A->getValue(); 1096 else if (A->getOption().matches(OPT_iwithprefix)) 1097 Opts.AddPath(Prefix.str() + A->getValue(), 1098 frontend::After, false, true); 1099 else 1100 Opts.AddPath(Prefix.str() + A->getValue(), 1101 frontend::Angled, false, true); 1102 } 1103 1104 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 1105 ie = Args.filtered_end(); it != ie; ++it) 1106 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 1107 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 1108 ie = Args.filtered_end(); it != ie; ++it) 1109 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 1110 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 1111 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 1112 Opts.AddPath((*it)->getValue(), frontend::System, false, 1113 !(*it)->getOption().matches(OPT_iwithsysroot)); 1114 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 1115 ie = Args.filtered_end(); it != ie; ++it) 1116 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 1117 1118 // Add the paths for the various language specific isystem flags. 1119 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 1120 ie = Args.filtered_end(); it != ie; ++it) 1121 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 1122 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 1123 ie = Args.filtered_end(); it != ie; ++it) 1124 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 1125 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 1126 ie = Args.filtered_end(); it != ie; ++it) 1127 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 1128 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 1129 ie = Args.filtered_end(); it != ie; ++it) 1130 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 1131 1132 // Add the internal paths from a driver that detects standard include paths. 1133 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 1134 OPT_internal_externc_isystem), 1135 E = Args.filtered_end(); 1136 I != E; ++I) { 1137 frontend::IncludeDirGroup Group = frontend::System; 1138 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 1139 Group = frontend::ExternCSystem; 1140 Opts.AddPath((*I)->getValue(), Group, false, true); 1141 } 1142 1143 // Add the path prefixes which are implicitly treated as being system headers. 1144 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix, 1145 OPT_no_system_header_prefix), 1146 E = Args.filtered_end(); 1147 I != E; ++I) 1148 Opts.AddSystemHeaderPrefix( 1149 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix)); 1150 1151 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay), 1152 E = Args.filtered_end(); I != E; ++I) 1153 Opts.AddVFSOverlayFile((*I)->getValue()); 1154 } 1155 1156 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1157 LangStandard::Kind LangStd) { 1158 // Set some properties which depend solely on the input kind; it would be nice 1159 // to move these to the language standard, and have the driver resolve the 1160 // input kind + language standard. 1161 if (IK == IK_Asm) { 1162 Opts.AsmPreprocessor = 1; 1163 } else if (IK == IK_ObjC || 1164 IK == IK_ObjCXX || 1165 IK == IK_PreprocessedObjC || 1166 IK == IK_PreprocessedObjCXX) { 1167 Opts.ObjC1 = Opts.ObjC2 = 1; 1168 } 1169 1170 if (LangStd == LangStandard::lang_unspecified) { 1171 // Based on the base language, pick one. 1172 switch (IK) { 1173 case IK_None: 1174 case IK_AST: 1175 case IK_LLVM_IR: 1176 llvm_unreachable("Invalid input kind!"); 1177 case IK_OpenCL: 1178 LangStd = LangStandard::lang_opencl; 1179 break; 1180 case IK_CUDA: 1181 LangStd = LangStandard::lang_cuda; 1182 break; 1183 case IK_Asm: 1184 case IK_C: 1185 case IK_PreprocessedC: 1186 case IK_ObjC: 1187 case IK_PreprocessedObjC: 1188 LangStd = LangStandard::lang_gnu11; 1189 break; 1190 case IK_CXX: 1191 case IK_PreprocessedCXX: 1192 case IK_ObjCXX: 1193 case IK_PreprocessedObjCXX: 1194 LangStd = LangStandard::lang_gnucxx98; 1195 break; 1196 } 1197 } 1198 1199 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1200 Opts.LineComment = Std.hasLineComments(); 1201 Opts.C99 = Std.isC99(); 1202 Opts.C11 = Std.isC11(); 1203 Opts.CPlusPlus = Std.isCPlusPlus(); 1204 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1205 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1206 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1207 Opts.Digraphs = Std.hasDigraphs(); 1208 Opts.GNUMode = Std.isGNUMode(); 1209 Opts.GNUInline = !Std.isC99(); 1210 Opts.HexFloats = Std.hasHexFloats(); 1211 Opts.ImplicitInt = Std.hasImplicitInt(); 1212 1213 // Set OpenCL Version. 1214 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1215 if (LangStd == LangStandard::lang_opencl) 1216 Opts.OpenCLVersion = 100; 1217 else if (LangStd == LangStandard::lang_opencl11) 1218 Opts.OpenCLVersion = 110; 1219 else if (LangStd == LangStandard::lang_opencl12) 1220 Opts.OpenCLVersion = 120; 1221 else if (LangStd == LangStandard::lang_opencl20) 1222 Opts.OpenCLVersion = 200; 1223 1224 // OpenCL has some additional defaults. 1225 if (Opts.OpenCL) { 1226 Opts.AltiVec = 0; 1227 Opts.CXXOperatorNames = 1; 1228 Opts.LaxVectorConversions = 0; 1229 Opts.DefaultFPContract = 1; 1230 Opts.NativeHalfType = 1; 1231 } 1232 1233 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA; 1234 1235 // OpenCL and C++ both have bool, true, false keywords. 1236 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1237 1238 // OpenCL has half keyword 1239 Opts.Half = Opts.OpenCL; 1240 1241 // C++ has wchar_t keyword. 1242 Opts.WChar = Opts.CPlusPlus; 1243 1244 Opts.GNUKeywords = Opts.GNUMode; 1245 Opts.CXXOperatorNames = Opts.CPlusPlus; 1246 1247 Opts.DollarIdents = !Opts.AsmPreprocessor; 1248 1249 // C++14 onwards has sized global deallocation functions. 1250 Opts.SizedDeallocation = Opts.CPlusPlus14; 1251 } 1252 1253 /// Attempt to parse a visibility value out of the given argument. 1254 static Visibility parseVisibility(Arg *arg, ArgList &args, 1255 DiagnosticsEngine &diags) { 1256 StringRef value = arg->getValue(); 1257 if (value == "default") { 1258 return DefaultVisibility; 1259 } else if (value == "hidden") { 1260 return HiddenVisibility; 1261 } else if (value == "protected") { 1262 // FIXME: diagnose if target does not support protected visibility 1263 return ProtectedVisibility; 1264 } 1265 1266 diags.Report(diag::err_drv_invalid_value) 1267 << arg->getAsString(args) << value; 1268 return DefaultVisibility; 1269 } 1270 1271 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) { 1272 auto Arg = Args.getLastArg(OPT_fms_compatibility_version); 1273 if (!Arg) 1274 return 0; 1275 1276 // The MSC versioning scheme involves four versioning components: 1277 // - Major 1278 // - Minor 1279 // - Build 1280 // - Patch 1281 // 1282 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value. 1283 // Additionally, the value may be provided in the form of a more readable 1284 // MM.mm.bbbbb.pp version. 1285 // 1286 // Unfortunately, due to the bit-width limitations, we cannot currently encode 1287 // the value for the patch level. 1288 1289 unsigned VC[4] = {0}; 1290 StringRef Value = Arg->getValue(); 1291 SmallVector<StringRef, 4> Components; 1292 1293 Value.split(Components, ".", llvm::array_lengthof(VC)); 1294 for (unsigned CI = 0, 1295 CE = std::min(Components.size(), llvm::array_lengthof(VC)); 1296 CI < CE; ++CI) { 1297 if (Components[CI].getAsInteger(10, VC[CI])) { 1298 Diags.Report(diag::err_drv_invalid_value) 1299 << Arg->getAsString(Args) << Value; 1300 return 0; 1301 } 1302 } 1303 1304 // FIXME we cannot encode the patch level 1305 return VC[0] * 10000000 + VC[1] * 100000 + VC[2]; 1306 } 1307 1308 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1309 DiagnosticsEngine &Diags) { 1310 // FIXME: Cleanup per-file based stuff. 1311 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1312 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1313 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1314 #define LANGSTANDARD(id, name, desc, features) \ 1315 .Case(name, LangStandard::lang_##id) 1316 #include "clang/Frontend/LangStandards.def" 1317 .Default(LangStandard::lang_unspecified); 1318 if (LangStd == LangStandard::lang_unspecified) 1319 Diags.Report(diag::err_drv_invalid_value) 1320 << A->getAsString(Args) << A->getValue(); 1321 else { 1322 // Valid standard, check to make sure language and standard are 1323 // compatible. 1324 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1325 switch (IK) { 1326 case IK_C: 1327 case IK_ObjC: 1328 case IK_PreprocessedC: 1329 case IK_PreprocessedObjC: 1330 if (!(Std.isC89() || Std.isC99())) 1331 Diags.Report(diag::err_drv_argument_not_allowed_with) 1332 << A->getAsString(Args) << "C/ObjC"; 1333 break; 1334 case IK_CXX: 1335 case IK_ObjCXX: 1336 case IK_PreprocessedCXX: 1337 case IK_PreprocessedObjCXX: 1338 if (!Std.isCPlusPlus()) 1339 Diags.Report(diag::err_drv_argument_not_allowed_with) 1340 << A->getAsString(Args) << "C++/ObjC++"; 1341 break; 1342 case IK_OpenCL: 1343 if (!Std.isC99()) 1344 Diags.Report(diag::err_drv_argument_not_allowed_with) 1345 << A->getAsString(Args) << "OpenCL"; 1346 break; 1347 case IK_CUDA: 1348 if (!Std.isCPlusPlus()) 1349 Diags.Report(diag::err_drv_argument_not_allowed_with) 1350 << A->getAsString(Args) << "CUDA"; 1351 break; 1352 default: 1353 break; 1354 } 1355 } 1356 } 1357 1358 // -cl-std only applies for OpenCL language standards. 1359 // Override the -std option in this case. 1360 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1361 LangStandard::Kind OpenCLLangStd 1362 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1363 .Case("CL", LangStandard::lang_opencl) 1364 .Case("CL1.1", LangStandard::lang_opencl11) 1365 .Case("CL1.2", LangStandard::lang_opencl12) 1366 .Case("CL2.0", LangStandard::lang_opencl20) 1367 .Default(LangStandard::lang_unspecified); 1368 1369 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1370 Diags.Report(diag::err_drv_invalid_value) 1371 << A->getAsString(Args) << A->getValue(); 1372 } 1373 else 1374 LangStd = OpenCLLangStd; 1375 } 1376 1377 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1378 1379 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1380 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1381 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1382 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1383 // name, as it doesn't seem a useful distinction. 1384 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1385 Opts.GNUKeywords); 1386 1387 if (Args.hasArg(OPT_fno_operator_names)) 1388 Opts.CXXOperatorNames = 0; 1389 1390 if (Args.hasArg(OPT_fcuda_is_device)) 1391 Opts.CUDAIsDevice = 1; 1392 1393 if (Opts.ObjC1) { 1394 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1395 StringRef value = arg->getValue(); 1396 if (Opts.ObjCRuntime.tryParse(value)) 1397 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1398 } 1399 1400 if (Args.hasArg(OPT_fobjc_gc_only)) 1401 Opts.setGC(LangOptions::GCOnly); 1402 else if (Args.hasArg(OPT_fobjc_gc)) 1403 Opts.setGC(LangOptions::HybridGC); 1404 else if (Args.hasArg(OPT_fobjc_arc)) { 1405 Opts.ObjCAutoRefCount = 1; 1406 if (!Opts.ObjCRuntime.allowsARC()) 1407 Diags.Report(diag::err_arc_unsupported_on_runtime); 1408 1409 // Only set ObjCARCWeak if ARC is enabled. 1410 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1411 Opts.ObjCARCWeak = 1; 1412 else 1413 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1414 } 1415 1416 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1417 Opts.ObjCInferRelatedResultType = 0; 1418 1419 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1420 Opts.ObjCSubscriptingLegacyRuntime = 1421 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1422 } 1423 1424 if (Args.hasArg(OPT_fgnu89_inline)) 1425 Opts.GNUInline = 1; 1426 1427 if (Args.hasArg(OPT_fapple_kext)) { 1428 if (!Opts.CPlusPlus) 1429 Diags.Report(diag::warn_c_kext); 1430 else 1431 Opts.AppleKext = 1; 1432 } 1433 1434 if (Args.hasArg(OPT_print_ivar_layout)) 1435 Opts.ObjCGCBitmapPrint = 1; 1436 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1437 Opts.NoConstantCFStrings = 1; 1438 1439 if (Args.hasArg(OPT_faltivec)) 1440 Opts.AltiVec = 1; 1441 1442 if (Args.hasArg(OPT_pthread)) 1443 Opts.POSIXThreads = 1; 1444 1445 // The value-visibility mode defaults to "default". 1446 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1447 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1448 } else { 1449 Opts.setValueVisibilityMode(DefaultVisibility); 1450 } 1451 1452 // The type-visibility mode defaults to the value-visibility mode. 1453 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1454 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1455 } else { 1456 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1457 } 1458 1459 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1460 Opts.InlineVisibilityHidden = 1; 1461 1462 if (Args.hasArg(OPT_ftrapv)) { 1463 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1464 // Set the handler, if one is specified. 1465 Opts.OverflowHandler = 1466 Args.getLastArgValue(OPT_ftrapv_handler); 1467 } 1468 else if (Args.hasArg(OPT_fwrapv)) 1469 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1470 1471 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1472 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1473 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1474 Opts.MSCompatibilityVersion = parseMSCVersion(Args, Diags); 1475 1476 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1477 // is specified, or -std is set to a conforming mode. 1478 // Trigraphs are disabled by default in c++1z onwards. 1479 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1480 Opts.Trigraphs = 1481 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1482 1483 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1484 OPT_fno_dollars_in_identifiers, 1485 Opts.DollarIdents); 1486 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1487 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1488 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1489 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1490 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1491 Opts.ConstStrings); 1492 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1493 Opts.LaxVectorConversions = 0; 1494 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1495 Opts.ThreadsafeStatics = 0; 1496 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1497 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1498 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1499 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1500 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1501 1502 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1503 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1504 Opts.Blocks = Args.hasArg(OPT_fblocks); 1505 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1506 Opts.Modules = Args.hasArg(OPT_fmodules); 1507 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1508 Opts.ModulesDeclUse = 1509 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1510 Opts.ModulesSearchAll = Opts.Modules && 1511 !Args.hasArg(OPT_fno_modules_search_all) && 1512 Args.hasArg(OPT_fmodules_search_all); 1513 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1514 Opts.ModulesImplicitMaps = Args.hasFlag(OPT_fmodules_implicit_maps, 1515 OPT_fno_modules_implicit_maps, true); 1516 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1517 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1518 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1519 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1520 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1521 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1522 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1523 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1524 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation); 1525 Opts.DefineSizedDeallocation = Opts.SizedDeallocation && 1526 Args.hasArg(OPT_fdefine_sized_deallocation); 1527 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1528 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1529 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1530 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1531 Opts.InstantiationDepth = 1532 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1533 Opts.ArrowDepth = 1534 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1535 Opts.ConstexprCallDepth = 1536 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1537 Opts.ConstexprStepLimit = 1538 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1539 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1540 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1541 Opts.NumLargeByValueCopy = 1542 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1543 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1544 Opts.ObjCConstantStringClass = 1545 Args.getLastArgValue(OPT_fconstant_string_class); 1546 Opts.ObjCDefaultSynthProperties = 1547 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1548 Opts.EncodeExtendedBlockSig = 1549 Args.hasArg(OPT_fencode_extended_block_signature); 1550 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1551 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1552 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1553 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1554 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1555 Opts.Static = Args.hasArg(OPT_static_define); 1556 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1557 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1558 || Args.hasArg(OPT_fdump_record_layouts); 1559 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1560 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1561 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1562 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1563 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1564 Opts.MRTD = Args.hasArg(OPT_mrtd); 1565 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1566 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1567 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1568 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1569 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1570 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1571 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1572 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1573 Opts.ImplementationOfModule = 1574 Args.getLastArgValue(OPT_fmodule_implementation_of); 1575 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1576 Opts.NativeHalfType = Opts.NativeHalfType; 1577 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns); 1578 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1579 1580 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1581 Opts.CurrentModule != Opts.ImplementationOfModule) { 1582 Diags.Report(diag::err_conflicting_module_names) 1583 << Opts.CurrentModule << Opts.ImplementationOfModule; 1584 } 1585 1586 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1587 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1588 .Case("target", LangOptions::ASMM_Target) 1589 .Case("no", LangOptions::ASMM_Off) 1590 .Case("yes", LangOptions::ASMM_On) 1591 .Default(255)) { 1592 default: 1593 Diags.Report(diag::err_drv_invalid_value) 1594 << "-faddress-space-map-mangling=" << A->getValue(); 1595 break; 1596 case LangOptions::ASMM_Target: 1597 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1598 break; 1599 case LangOptions::ASMM_On: 1600 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1601 break; 1602 case LangOptions::ASMM_Off: 1603 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1604 break; 1605 } 1606 } 1607 1608 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1609 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1610 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1611 A->getValue()) 1612 .Case("single", 1613 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1614 .Case("multiple", 1615 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1616 .Case("virtual", 1617 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1618 .Default(LangOptions::PPTMK_BestCase); 1619 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1620 Diags.Report(diag::err_drv_invalid_value) 1621 << "-fms-memptr-rep=" << A->getValue(); 1622 1623 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1624 } 1625 1626 // Check if -fopenmp= is specified. 1627 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) { 1628 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue()) 1629 .Case("libiomp5", true) 1630 .Default(false); 1631 } 1632 1633 // Record whether the __DEPRECATED define was requested. 1634 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1635 OPT_fno_deprecated_macro, 1636 Opts.Deprecated); 1637 1638 // FIXME: Eliminate this dependency. 1639 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1640 OptSize = getOptimizationLevelSize(Args); 1641 Opts.Optimize = Opt != 0; 1642 Opts.OptimizeSize = OptSize != 0; 1643 1644 // This is the __NO_INLINE__ define, which just depends on things like the 1645 // optimization level and -fno-inline, not actually whether the backend has 1646 // inlining enabled. 1647 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1648 1649 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 1650 Args.hasArg(OPT_cl_fast_relaxed_math); 1651 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 1652 Args.hasArg(OPT_cl_finite_math_only) || 1653 Args.hasArg(OPT_cl_fast_relaxed_math); 1654 1655 Opts.RetainCommentsFromSystemHeaders = 1656 Args.hasArg(OPT_fretain_comments_from_system_headers); 1657 1658 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1659 switch (SSP) { 1660 default: 1661 Diags.Report(diag::err_drv_invalid_value) 1662 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1663 break; 1664 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1665 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1666 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1667 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1668 } 1669 1670 // Parse -fsanitize= arguments. 1671 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1672 Diags, Opts.Sanitize); 1673 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 1674 Opts.SanitizeAddressFieldPadding = 1675 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 1676 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 1677 } 1678 1679 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1680 FileManager &FileMgr, 1681 DiagnosticsEngine &Diags) { 1682 using namespace options; 1683 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1684 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1685 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1686 Opts.TokenCache = A->getValue(); 1687 else 1688 Opts.TokenCache = Opts.ImplicitPTHInclude; 1689 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1690 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1691 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1692 1693 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1694 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1695 ie = Args.filtered_end(); it != ie; ++it) { 1696 const Arg *A = *it; 1697 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1698 } 1699 1700 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1701 StringRef Value(A->getValue()); 1702 size_t Comma = Value.find(','); 1703 unsigned Bytes = 0; 1704 unsigned EndOfLine = 0; 1705 1706 if (Comma == StringRef::npos || 1707 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1708 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1709 Diags.Report(diag::err_drv_preamble_format); 1710 else { 1711 Opts.PrecompiledPreambleBytes.first = Bytes; 1712 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1713 } 1714 } 1715 1716 // Add macros from the command line. 1717 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1718 ie = Args.filtered_end(); it != ie; ++it) { 1719 if ((*it)->getOption().matches(OPT_D)) 1720 Opts.addMacroDef((*it)->getValue()); 1721 else 1722 Opts.addMacroUndef((*it)->getValue()); 1723 } 1724 1725 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1726 1727 // Add the ordered list of -includes. 1728 for (arg_iterator it = Args.filtered_begin(OPT_include), 1729 ie = Args.filtered_end(); it != ie; ++it) { 1730 const Arg *A = *it; 1731 Opts.Includes.push_back(A->getValue()); 1732 } 1733 1734 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1735 ie = Args.filtered_end(); it != ie; ++it) { 1736 const Arg *A = *it; 1737 Opts.ChainedIncludes.push_back(A->getValue()); 1738 } 1739 1740 // Include 'altivec.h' if -faltivec option present 1741 if (Args.hasArg(OPT_faltivec)) 1742 Opts.Includes.push_back("altivec.h"); 1743 1744 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1745 ie = Args.filtered_end(); it != ie; ++it) { 1746 const Arg *A = *it; 1747 std::pair<StringRef,StringRef> Split = 1748 StringRef(A->getValue()).split(';'); 1749 1750 if (Split.second.empty()) { 1751 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1752 continue; 1753 } 1754 1755 Opts.addRemappedFile(Split.first, Split.second); 1756 } 1757 1758 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1759 StringRef Name = A->getValue(); 1760 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1761 .Case("libc++", ARCXX_libcxx) 1762 .Case("libstdc++", ARCXX_libstdcxx) 1763 .Case("none", ARCXX_nolib) 1764 .Default(~0U); 1765 if (Library == ~0U) 1766 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1767 else 1768 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1769 } 1770 } 1771 1772 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1773 ArgList &Args, 1774 frontend::ActionKind Action) { 1775 using namespace options; 1776 1777 switch (Action) { 1778 case frontend::ASTDeclList: 1779 case frontend::ASTDump: 1780 case frontend::ASTPrint: 1781 case frontend::ASTView: 1782 case frontend::EmitAssembly: 1783 case frontend::EmitBC: 1784 case frontend::EmitHTML: 1785 case frontend::EmitLLVM: 1786 case frontend::EmitLLVMOnly: 1787 case frontend::EmitCodeGenOnly: 1788 case frontend::EmitObj: 1789 case frontend::FixIt: 1790 case frontend::GenerateModule: 1791 case frontend::GeneratePCH: 1792 case frontend::GeneratePTH: 1793 case frontend::ParseSyntaxOnly: 1794 case frontend::ModuleFileInfo: 1795 case frontend::VerifyPCH: 1796 case frontend::PluginAction: 1797 case frontend::PrintDeclContext: 1798 case frontend::RewriteObjC: 1799 case frontend::RewriteTest: 1800 case frontend::RunAnalysis: 1801 case frontend::MigrateSource: 1802 Opts.ShowCPP = 0; 1803 break; 1804 1805 case frontend::DumpRawTokens: 1806 case frontend::DumpTokens: 1807 case frontend::InitOnly: 1808 case frontend::PrintPreamble: 1809 case frontend::PrintPreprocessedInput: 1810 case frontend::RewriteMacros: 1811 case frontend::RunPreprocessorOnly: 1812 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1813 break; 1814 } 1815 1816 Opts.ShowComments = Args.hasArg(OPT_C); 1817 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1818 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1819 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1820 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1821 } 1822 1823 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1824 using namespace options; 1825 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1826 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1827 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1828 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1829 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1830 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1831 1832 // Use the default target triple if unspecified. 1833 if (Opts.Triple.empty()) 1834 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1835 } 1836 1837 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1838 const char *const *ArgBegin, 1839 const char *const *ArgEnd, 1840 DiagnosticsEngine &Diags) { 1841 bool Success = true; 1842 1843 // Parse the arguments. 1844 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1845 const unsigned IncludedFlagsBitmask = options::CC1Option; 1846 unsigned MissingArgIndex, MissingArgCount; 1847 std::unique_ptr<InputArgList> Args( 1848 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount, 1849 IncludedFlagsBitmask)); 1850 1851 // Check for missing argument error. 1852 if (MissingArgCount) { 1853 Diags.Report(diag::err_drv_missing_argument) 1854 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1855 Success = false; 1856 } 1857 1858 // Issue errors on unknown arguments. 1859 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1860 ie = Args->filtered_end(); it != ie; ++it) { 1861 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1862 Success = false; 1863 } 1864 1865 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1866 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1867 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1868 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1869 && Success; 1870 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1871 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1872 // FIXME: We shouldn't have to pass the DashX option around here 1873 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1874 ParseTargetArgs(Res.getTargetOpts(), *Args); 1875 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags, 1876 Res.getTargetOpts()) && Success; 1877 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1878 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1879 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1880 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1881 Res.getLangOpts()->ObjCExceptions = 1; 1882 } 1883 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1884 // PCH file and find the original header name. Remove the need to do that in 1885 // ParsePreprocessorArgs and remove the FileManager 1886 // parameters from the function and the "FileManager.h" #include. 1887 FileManager FileMgr(Res.getFileSystemOpts()); 1888 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1889 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1890 Res.getFrontendOpts().ProgramAction); 1891 return Success; 1892 } 1893 1894 namespace { 1895 1896 class ModuleSignature { 1897 SmallVector<uint64_t, 16> Data; 1898 unsigned CurBit; 1899 uint64_t CurValue; 1900 1901 public: 1902 ModuleSignature() : CurBit(0), CurValue(0) { } 1903 1904 void add(uint64_t Value, unsigned Bits); 1905 void add(StringRef Value); 1906 void flush(); 1907 1908 llvm::APInt getAsInteger() const; 1909 }; 1910 } 1911 1912 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1913 CurValue |= Value << CurBit; 1914 if (CurBit + NumBits < 64) { 1915 CurBit += NumBits; 1916 return; 1917 } 1918 1919 // Add the current word. 1920 Data.push_back(CurValue); 1921 1922 if (CurBit) 1923 CurValue = Value >> (64-CurBit); 1924 else 1925 CurValue = 0; 1926 CurBit = (CurBit+NumBits) & 63; 1927 } 1928 1929 void ModuleSignature::flush() { 1930 if (CurBit == 0) 1931 return; 1932 1933 Data.push_back(CurValue); 1934 CurBit = 0; 1935 CurValue = 0; 1936 } 1937 1938 void ModuleSignature::add(StringRef Value) { 1939 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1940 add(*I, 8); 1941 } 1942 1943 llvm::APInt ModuleSignature::getAsInteger() const { 1944 return llvm::APInt(Data.size() * 64, Data); 1945 } 1946 1947 std::string CompilerInvocation::getModuleHash() const { 1948 // Note: For QoI reasons, the things we use as a hash here should all be 1949 // dumped via the -module-info flag. 1950 using llvm::hash_code; 1951 using llvm::hash_value; 1952 using llvm::hash_combine; 1953 1954 // Start the signature with the compiler version. 1955 // FIXME: We'd rather use something more cryptographically sound than 1956 // CityHash, but this will do for now. 1957 hash_code code = hash_value(getClangFullRepositoryVersion()); 1958 1959 // Extend the signature with the language options 1960 #define LANGOPT(Name, Bits, Default, Description) \ 1961 code = hash_combine(code, LangOpts->Name); 1962 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1963 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1964 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1965 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1966 #include "clang/Basic/LangOptions.def" 1967 1968 // Extend the signature with the target options. 1969 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1970 TargetOpts->ABI); 1971 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1972 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1973 1974 // Extend the signature with preprocessor options. 1975 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1976 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1977 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1978 1979 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1980 I = getPreprocessorOpts().Macros.begin(), 1981 IEnd = getPreprocessorOpts().Macros.end(); 1982 I != IEnd; ++I) { 1983 // If we're supposed to ignore this macro for the purposes of modules, 1984 // don't put it into the hash. 1985 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1986 // Check whether we're ignoring this macro. 1987 StringRef MacroDef = I->first; 1988 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1989 continue; 1990 } 1991 1992 code = hash_combine(code, I->first, I->second); 1993 } 1994 1995 // Extend the signature with the sysroot. 1996 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1997 hsOpts.UseStandardSystemIncludes, 1998 hsOpts.UseStandardCXXIncludes, 1999 hsOpts.UseLibcxx); 2000 code = hash_combine(code, hsOpts.ResourceDir); 2001 2002 // Extend the signature with the user build path. 2003 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2004 2005 // Darwin-specific hack: if we have a sysroot, use the contents and 2006 // modification time of 2007 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2008 // as part of the module hash. 2009 if (!hsOpts.Sysroot.empty()) { 2010 SmallString<128> systemVersionFile; 2011 systemVersionFile += hsOpts.Sysroot; 2012 llvm::sys::path::append(systemVersionFile, "System"); 2013 llvm::sys::path::append(systemVersionFile, "Library"); 2014 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2015 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2016 2017 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2018 llvm::MemoryBuffer::getFile(systemVersionFile.str()); 2019 if (buffer) { 2020 code = hash_combine(code, buffer.get()->getBuffer()); 2021 2022 struct stat statBuf; 2023 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2024 code = hash_combine(code, statBuf.st_mtime); 2025 } 2026 } 2027 2028 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2029 } 2030 2031 namespace clang { 2032 2033 template<typename IntTy> 2034 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2035 IntTy Default, 2036 DiagnosticsEngine *Diags) { 2037 IntTy Res = Default; 2038 if (Arg *A = Args.getLastArg(Id)) { 2039 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2040 if (Diags) 2041 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2042 << A->getValue(); 2043 } 2044 } 2045 return Res; 2046 } 2047 2048 2049 // Declared in clang/Frontend/Utils.h. 2050 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2051 DiagnosticsEngine *Diags) { 2052 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2053 } 2054 2055 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2056 uint64_t Default, 2057 DiagnosticsEngine *Diags) { 2058 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2059 } 2060 2061 void BuryPointer(const void *Ptr) { 2062 // This function may be called only a small fixed amount of times per each 2063 // invocation, otherwise we do actually have a leak which we want to report. 2064 // If this function is called more than kGraveYardMaxSize times, the pointers 2065 // will not be properly buried and a leak detector will report a leak, which 2066 // is what we want in such case. 2067 static const size_t kGraveYardMaxSize = 16; 2068 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2069 static std::atomic<unsigned> GraveYardSize; 2070 unsigned Idx = GraveYardSize++; 2071 if (Idx >= kGraveYardMaxSize) 2072 return; 2073 GraveYard[Idx] = Ptr; 2074 } 2075 2076 IntrusiveRefCntPtr<vfs::FileSystem> 2077 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2078 DiagnosticsEngine &Diags) { 2079 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2080 return vfs::getRealFileSystem(); 2081 2082 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2083 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2084 // earlier vfs files are on the bottom 2085 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2086 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2087 llvm::MemoryBuffer::getFile(File); 2088 if (!Buffer) { 2089 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2090 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2091 } 2092 2093 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2094 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr); 2095 if (!FS.get()) { 2096 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2097 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2098 } 2099 Overlay->pushOverlay(FS); 2100 } 2101 return Overlay; 2102 } 2103 } // end namespace clang 2104