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 #if LLVM_ON_UNIX 43 #include <unistd.h> // for gethostname() 44 #endif 45 using namespace clang; 46 47 //===----------------------------------------------------------------------===// 48 // Initialization. 49 //===----------------------------------------------------------------------===// 50 51 CompilerInvocationBase::CompilerInvocationBase() 52 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 53 DiagnosticOpts(new DiagnosticOptions()), 54 HeaderSearchOpts(new HeaderSearchOptions()), 55 PreprocessorOpts(new PreprocessorOptions()) {} 56 57 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 58 : RefCountedBase<CompilerInvocation>(), 59 LangOpts(new LangOptions(*X.getLangOpts())), 60 TargetOpts(new TargetOptions(X.getTargetOpts())), 61 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 62 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 63 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 64 65 CompilerInvocationBase::~CompilerInvocationBase() {} 66 67 //===----------------------------------------------------------------------===// 68 // Deserialization (from args) 69 //===----------------------------------------------------------------------===// 70 71 using namespace clang::driver; 72 using namespace clang::driver::options; 73 using namespace llvm::opt; 74 75 // 76 77 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 78 DiagnosticsEngine &Diags) { 79 unsigned DefaultOpt = 0; 80 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 81 DefaultOpt = 2; 82 83 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 84 if (A->getOption().matches(options::OPT_O0)) 85 return 0; 86 87 if (A->getOption().matches(options::OPT_Ofast)) 88 return 3; 89 90 assert (A->getOption().matches(options::OPT_O)); 91 92 StringRef S(A->getValue()); 93 if (S == "s" || S == "z" || S.empty()) 94 return 2; 95 96 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 97 } 98 99 return DefaultOpt; 100 } 101 102 static unsigned getOptimizationLevelSize(ArgList &Args) { 103 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 104 if (A->getOption().matches(options::OPT_O)) { 105 switch (A->getValue()[0]) { 106 default: 107 return 0; 108 case 's': 109 return 1; 110 case 'z': 111 return 2; 112 } 113 } 114 } 115 return 0; 116 } 117 118 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 119 OptSpecifier GroupWithValue, 120 std::vector<std::string> &Diagnostics) { 121 for (Arg *A : Args.filtered(Group)) { 122 if (A->getOption().getKind() == Option::FlagClass) { 123 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 124 // its name (minus the "W" or "R" at the beginning) to the warning list. 125 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 126 } else if (A->getOption().matches(GroupWithValue)) { 127 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 128 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 129 } else { 130 // Otherwise, add its value (for OPT_W_Joined and similar). 131 for (const char *Arg : A->getValues()) 132 Diagnostics.push_back(Arg); 133 } 134 } 135 } 136 137 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 138 DiagnosticsEngine &Diags) { 139 using namespace options; 140 bool Success = true; 141 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 142 StringRef Name = A->getValue(); 143 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 144 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 145 .Case(CMDFLAG, NAME##Model) 146 #include "clang/StaticAnalyzer/Core/Analyses.def" 147 .Default(NumStores); 148 if (Value == NumStores) { 149 Diags.Report(diag::err_drv_invalid_value) 150 << A->getAsString(Args) << Name; 151 Success = false; 152 } else { 153 Opts.AnalysisStoreOpt = Value; 154 } 155 } 156 157 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 158 StringRef Name = A->getValue(); 159 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 160 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 161 .Case(CMDFLAG, NAME##Model) 162 #include "clang/StaticAnalyzer/Core/Analyses.def" 163 .Default(NumConstraints); 164 if (Value == NumConstraints) { 165 Diags.Report(diag::err_drv_invalid_value) 166 << A->getAsString(Args) << Name; 167 Success = false; 168 } else { 169 Opts.AnalysisConstraintsOpt = Value; 170 } 171 } 172 173 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 174 StringRef Name = A->getValue(); 175 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 176 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 177 .Case(CMDFLAG, PD_##NAME) 178 #include "clang/StaticAnalyzer/Core/Analyses.def" 179 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 180 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 181 Diags.Report(diag::err_drv_invalid_value) 182 << A->getAsString(Args) << Name; 183 Success = false; 184 } else { 185 Opts.AnalysisDiagOpt = Value; 186 } 187 } 188 189 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 190 StringRef Name = A->getValue(); 191 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 192 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 193 .Case(CMDFLAG, NAME) 194 #include "clang/StaticAnalyzer/Core/Analyses.def" 195 .Default(NumPurgeModes); 196 if (Value == NumPurgeModes) { 197 Diags.Report(diag::err_drv_invalid_value) 198 << A->getAsString(Args) << Name; 199 Success = false; 200 } else { 201 Opts.AnalysisPurgeOpt = Value; 202 } 203 } 204 205 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 206 StringRef Name = A->getValue(); 207 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 208 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 209 .Case(CMDFLAG, NAME) 210 #include "clang/StaticAnalyzer/Core/Analyses.def" 211 .Default(NumInliningModes); 212 if (Value == NumInliningModes) { 213 Diags.Report(diag::err_drv_invalid_value) 214 << A->getAsString(Args) << Name; 215 Success = false; 216 } else { 217 Opts.InliningMode = Value; 218 } 219 } 220 221 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 222 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks); 223 224 Opts.visualizeExplodedGraphWithGraphViz = 225 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 226 Opts.visualizeExplodedGraphWithUbiGraph = 227 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 228 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 229 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 230 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 231 Opts.AnalyzeNestedBlocks = 232 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 233 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 234 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 235 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 236 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 237 Opts.maxBlockVisitOnPath = 238 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 239 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 240 Opts.InlineMaxStackDepth = 241 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 242 Opts.InlineMaxStackDepth, Diags); 243 244 Opts.CheckersControlList.clear(); 245 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 246 OPT_analyzer_disable_checker), 247 ie = Args.filtered_end(); it != ie; ++it) { 248 const Arg *A = *it; 249 A->claim(); 250 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 251 // We can have a list of comma separated checker names, e.g: 252 // '-analyzer-checker=cocoa,unix' 253 StringRef checkerList = A->getValue(); 254 SmallVector<StringRef, 4> checkers; 255 checkerList.split(checkers, ","); 256 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 257 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 258 } 259 260 // Go through the analyzer configuration options. 261 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 262 ie = Args.filtered_end(); it != ie; ++it) { 263 const Arg *A = *it; 264 A->claim(); 265 // We can have a list of comma separated config names, e.g: 266 // '-analyzer-config key1=val1,key2=val2' 267 StringRef configList = A->getValue(); 268 SmallVector<StringRef, 4> configVals; 269 configList.split(configVals, ","); 270 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 271 StringRef key, val; 272 std::tie(key, val) = configVals[i].split("="); 273 if (val.empty()) { 274 Diags.Report(SourceLocation(), 275 diag::err_analyzer_config_no_value) << configVals[i]; 276 Success = false; 277 break; 278 } 279 if (val.find('=') != StringRef::npos) { 280 Diags.Report(SourceLocation(), 281 diag::err_analyzer_config_multiple_values) 282 << configVals[i]; 283 Success = false; 284 break; 285 } 286 Opts.Config[key] = val; 287 } 288 } 289 290 return Success; 291 } 292 293 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 294 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 295 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 296 return true; 297 } 298 299 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 300 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 301 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 302 } 303 304 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 305 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 306 StringRef Value = A->getValue(); 307 if (Value == "small" || Value == "kernel" || Value == "medium" || 308 Value == "large") 309 return Value; 310 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 311 } 312 return "default"; 313 } 314 315 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 316 /// It returns a pointer to the newly generated Regex instance. 317 static std::shared_ptr<llvm::Regex> 318 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 319 Arg *RpassArg) { 320 StringRef Val = RpassArg->getValue(); 321 std::string RegexError; 322 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 323 if (!Pattern->isValid(RegexError)) { 324 Diags.Report(diag::err_drv_optimization_remark_pattern) 325 << RegexError << RpassArg->getAsString(Args); 326 Pattern.reset(); 327 } 328 return Pattern; 329 } 330 331 static void parseSanitizerKinds(StringRef FlagName, 332 const std::vector<std::string> &Sanitizers, 333 DiagnosticsEngine &Diags, SanitizerSet &S) { 334 for (const auto &Sanitizer : Sanitizers) { 335 SanitizerKind K = llvm::StringSwitch<SanitizerKind>(Sanitizer) 336 #define SANITIZER(NAME, ID) .Case(NAME, SanitizerKind::ID) 337 #include "clang/Basic/Sanitizers.def" 338 .Default(SanitizerKind::Unknown); 339 if (K == SanitizerKind::Unknown) 340 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 341 else 342 S.set(K, true); 343 } 344 } 345 346 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 347 DiagnosticsEngine &Diags, 348 const TargetOptions &TargetOpts) { 349 using namespace options; 350 bool Success = true; 351 352 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 353 // TODO: This could be done in Driver 354 unsigned MaxOptLevel = 3; 355 if (OptimizationLevel > MaxOptLevel) { 356 // If the optimization level is not supported, fall back on the default 357 // optimization 358 Diags.Report(diag::warn_drv_optimization_value) 359 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 360 OptimizationLevel = MaxOptLevel; 361 } 362 Opts.OptimizationLevel = OptimizationLevel; 363 364 // We must always run at least the always inlining pass. 365 Opts.setInlining( 366 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 367 : CodeGenOptions::OnlyAlwaysInlining); 368 // -fno-inline-functions overrides OptimizationLevel > 1. 369 Opts.NoInline = Args.hasArg(OPT_fno_inline); 370 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 371 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 372 373 if (Args.hasArg(OPT_gline_tables_only)) { 374 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 375 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) || 376 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) { 377 bool Default = false; 378 // Until dtrace (via CTF) and LLDB can deal with distributed debug info, 379 // Darwin and FreeBSD default to standalone/full debug info. 380 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() || 381 llvm::Triple(TargetOpts.Triple).isOSFreeBSD()) 382 Default = true; 383 384 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default)) 385 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 386 else 387 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 388 } 389 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 390 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 391 if (Args.hasArg(OPT_gdwarf_2)) 392 Opts.DwarfVersion = 2; 393 else if (Args.hasArg(OPT_gdwarf_3)) 394 Opts.DwarfVersion = 3; 395 else if (Args.hasArg(OPT_gdwarf_4)) 396 Opts.DwarfVersion = 4; 397 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo) 398 // Default Dwarf version is 4 if we are generating debug information. 399 Opts.DwarfVersion = 4; 400 401 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 402 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 403 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 404 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 405 OPT_fuse_register_sized_bitfield_access); 406 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 407 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 408 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 409 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 410 Opts.NoCommon = Args.hasArg(OPT_fno_common); 411 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 412 Opts.OptimizeSize = getOptimizationLevelSize(Args); 413 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 414 Args.hasArg(OPT_ffreestanding)); 415 Opts.UnrollLoops = 416 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 417 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 418 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 419 420 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 421 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 422 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 423 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate); 424 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); 425 Opts.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping); 426 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 427 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 428 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 429 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 430 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 431 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 432 Opts.CodeModel = getCodeModel(Args, Diags); 433 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 434 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 435 Opts.DisableFree = Args.hasArg(OPT_disable_free); 436 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 437 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 438 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 439 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 440 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 441 Args.hasArg(OPT_cl_finite_math_only) || 442 Args.hasArg(OPT_cl_fast_relaxed_math)); 443 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 444 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 445 Args.hasArg(OPT_cl_finite_math_only) || 446 Args.hasArg(OPT_cl_fast_relaxed_math)); 447 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros); 448 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 449 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 450 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 451 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 452 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 453 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 454 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 455 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 456 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 457 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 458 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 459 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 460 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 461 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 462 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 463 Args.hasArg(OPT_cl_fast_relaxed_math); 464 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 465 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 466 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 467 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 468 Diags.Report(diag::err_drv_invalid_value) 469 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 470 << Opts.ThreadModel; 471 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 472 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 473 474 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 475 OPT_fno_function_sections, false); 476 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 477 OPT_fno_data_sections, false); 478 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 479 480 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 481 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 482 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 483 484 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 485 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 486 487 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 488 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 489 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 490 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 491 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 492 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 493 Opts.CoverageNoFunctionNamesInData = 494 Args.hasArg(OPT_coverage_no_function_names_in_data); 495 if (Args.hasArg(OPT_coverage_version_EQ)) { 496 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 497 if (CoverageVersion.size() != 4) { 498 Diags.Report(diag::err_drv_invalid_value) 499 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 500 << CoverageVersion; 501 } else { 502 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 503 } 504 } 505 } 506 507 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 508 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 509 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 510 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 511 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 512 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 513 Opts.SanitizeCoverage = 514 getLastArgIntValue(Args, OPT_fsanitize_coverage, 0, Diags); 515 Opts.SanitizeMemoryTrackOrigins = 516 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 517 Opts.SanitizeUndefinedTrapOnError = 518 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 519 Opts.SSPBufferSize = 520 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 521 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 522 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 523 StringRef Val = A->getValue(); 524 unsigned StackAlignment = Opts.StackAlignment; 525 Val.getAsInteger(10, StackAlignment); 526 Opts.StackAlignment = StackAlignment; 527 } 528 529 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 530 StringRef Val = A->getValue(); 531 unsigned StackProbeSize = Opts.StackProbeSize; 532 Val.getAsInteger(0, StackProbeSize); 533 Opts.StackProbeSize = StackProbeSize; 534 } 535 536 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 537 StringRef Name = A->getValue(); 538 unsigned Method = llvm::StringSwitch<unsigned>(Name) 539 .Case("legacy", CodeGenOptions::Legacy) 540 .Case("non-legacy", CodeGenOptions::NonLegacy) 541 .Case("mixed", CodeGenOptions::Mixed) 542 .Default(~0U); 543 if (Method == ~0U) { 544 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 545 Success = false; 546 } else { 547 Opts.setObjCDispatchMethod( 548 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 549 } 550 } 551 552 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 553 StringRef Name = A->getValue(); 554 unsigned Model = llvm::StringSwitch<unsigned>(Name) 555 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 556 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 557 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 558 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 559 .Default(~0U); 560 if (Model == ~0U) { 561 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 562 Success = false; 563 } else { 564 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 565 } 566 } 567 568 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 569 StringRef Val = A->getValue(); 570 if (Val == "fast") 571 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 572 else if (Val == "on") 573 Opts.setFPContractMode(CodeGenOptions::FPC_On); 574 else if (Val == "off") 575 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 576 else 577 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 578 } 579 580 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 581 if (A->getOption().matches(OPT_fpcc_struct_return)) { 582 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 583 } else { 584 assert(A->getOption().matches(OPT_freg_struct_return)); 585 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 586 } 587 } 588 589 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 590 bool NeedLocTracking = false; 591 592 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 593 Opts.OptimizationRemarkPattern = 594 GenerateOptimizationRemarkRegex(Diags, Args, A); 595 NeedLocTracking = true; 596 } 597 598 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 599 Opts.OptimizationRemarkMissedPattern = 600 GenerateOptimizationRemarkRegex(Diags, Args, A); 601 NeedLocTracking = true; 602 } 603 604 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 605 Opts.OptimizationRemarkAnalysisPattern = 606 GenerateOptimizationRemarkRegex(Diags, Args, A); 607 NeedLocTracking = true; 608 } 609 610 // If the user requested to use a sample profile for PGO, then the 611 // backend will need to track source location information so the profile 612 // can be incorporated into the IR. 613 if (!Opts.SampleProfileFile.empty()) 614 NeedLocTracking = true; 615 616 // If the user requested a flag that requires source locations available in 617 // the backend, make sure that the backend tracks source location information. 618 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 619 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 620 621 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 622 623 // Parse -fsanitize-recover= arguments. 624 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 625 parseSanitizerKinds("-fsanitize-recover=", 626 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 627 Opts.SanitizeRecover); 628 629 return Success; 630 } 631 632 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 633 ArgList &Args) { 634 using namespace options; 635 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 636 Opts.Targets = Args.getAllArgValues(OPT_MT); 637 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 638 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 639 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 640 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 641 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 642 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 643 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 644 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 645 Opts.ModuleDependencyOutputDir = 646 Args.getLastArgValue(OPT_module_dependency_dir); 647 } 648 649 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 650 DiagnosticsEngine *Diags) { 651 using namespace options; 652 bool Success = true; 653 654 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 655 if (Arg *A = 656 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 657 Opts.DiagnosticSerializationFile = A->getValue(); 658 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 659 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 660 Opts.Pedantic = Args.hasArg(OPT_pedantic); 661 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 662 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 663 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 664 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 665 OPT_fno_show_column, 666 /*Default=*/true); 667 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 668 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 669 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 670 671 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 672 673 // Default behavior is to not to show note include stacks. 674 Opts.ShowNoteIncludeStack = false; 675 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 676 OPT_fno_diagnostics_show_note_include_stack)) 677 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 678 Opts.ShowNoteIncludeStack = true; 679 680 StringRef ShowOverloads = 681 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 682 if (ShowOverloads == "best") 683 Opts.setShowOverloads(Ovl_Best); 684 else if (ShowOverloads == "all") 685 Opts.setShowOverloads(Ovl_All); 686 else { 687 Success = false; 688 if (Diags) 689 Diags->Report(diag::err_drv_invalid_value) 690 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 691 << ShowOverloads; 692 } 693 694 StringRef ShowCategory = 695 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 696 if (ShowCategory == "none") 697 Opts.ShowCategories = 0; 698 else if (ShowCategory == "id") 699 Opts.ShowCategories = 1; 700 else if (ShowCategory == "name") 701 Opts.ShowCategories = 2; 702 else { 703 Success = false; 704 if (Diags) 705 Diags->Report(diag::err_drv_invalid_value) 706 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 707 << ShowCategory; 708 } 709 710 StringRef Format = 711 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 712 if (Format == "clang") 713 Opts.setFormat(DiagnosticOptions::Clang); 714 else if (Format == "msvc") 715 Opts.setFormat(DiagnosticOptions::MSVC); 716 else if (Format == "msvc-fallback") { 717 Opts.setFormat(DiagnosticOptions::MSVC); 718 Opts.CLFallbackMode = true; 719 } else if (Format == "vi") 720 Opts.setFormat(DiagnosticOptions::Vi); 721 else { 722 Success = false; 723 if (Diags) 724 Diags->Report(diag::err_drv_invalid_value) 725 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 726 << Format; 727 } 728 729 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 730 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 731 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 732 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 733 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 734 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 735 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 736 Opts.MacroBacktraceLimit = 737 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 738 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 739 Opts.TemplateBacktraceLimit = getLastArgIntValue( 740 Args, OPT_ftemplate_backtrace_limit, 741 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 742 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 743 Args, OPT_fconstexpr_backtrace_limit, 744 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 745 Opts.SpellCheckingLimit = getLastArgIntValue( 746 Args, OPT_fspell_checking_limit, 747 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 748 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 749 DiagnosticOptions::DefaultTabStop, Diags); 750 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 751 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 752 if (Diags) 753 Diags->Report(diag::warn_ignoring_ftabstop_value) 754 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 755 } 756 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 757 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 758 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 759 760 return Success; 761 } 762 763 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 764 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 765 } 766 767 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 768 DiagnosticsEngine &Diags) { 769 using namespace options; 770 Opts.ProgramAction = frontend::ParseSyntaxOnly; 771 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 772 switch (A->getOption().getID()) { 773 default: 774 llvm_unreachable("Invalid option in group!"); 775 case OPT_ast_list: 776 Opts.ProgramAction = frontend::ASTDeclList; break; 777 case OPT_ast_dump: 778 case OPT_ast_dump_lookups: 779 Opts.ProgramAction = frontend::ASTDump; break; 780 case OPT_ast_print: 781 Opts.ProgramAction = frontend::ASTPrint; break; 782 case OPT_ast_view: 783 Opts.ProgramAction = frontend::ASTView; break; 784 case OPT_dump_raw_tokens: 785 Opts.ProgramAction = frontend::DumpRawTokens; break; 786 case OPT_dump_tokens: 787 Opts.ProgramAction = frontend::DumpTokens; break; 788 case OPT_S: 789 Opts.ProgramAction = frontend::EmitAssembly; break; 790 case OPT_emit_llvm_bc: 791 Opts.ProgramAction = frontend::EmitBC; break; 792 case OPT_emit_html: 793 Opts.ProgramAction = frontend::EmitHTML; break; 794 case OPT_emit_llvm: 795 Opts.ProgramAction = frontend::EmitLLVM; break; 796 case OPT_emit_llvm_only: 797 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 798 case OPT_emit_codegen_only: 799 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 800 case OPT_emit_obj: 801 Opts.ProgramAction = frontend::EmitObj; break; 802 case OPT_fixit_EQ: 803 Opts.FixItSuffix = A->getValue(); 804 // fall-through! 805 case OPT_fixit: 806 Opts.ProgramAction = frontend::FixIt; break; 807 case OPT_emit_module: 808 Opts.ProgramAction = frontend::GenerateModule; break; 809 case OPT_emit_pch: 810 Opts.ProgramAction = frontend::GeneratePCH; break; 811 case OPT_emit_pth: 812 Opts.ProgramAction = frontend::GeneratePTH; break; 813 case OPT_init_only: 814 Opts.ProgramAction = frontend::InitOnly; break; 815 case OPT_fsyntax_only: 816 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 817 case OPT_module_file_info: 818 Opts.ProgramAction = frontend::ModuleFileInfo; break; 819 case OPT_verify_pch: 820 Opts.ProgramAction = frontend::VerifyPCH; break; 821 case OPT_print_decl_contexts: 822 Opts.ProgramAction = frontend::PrintDeclContext; break; 823 case OPT_print_preamble: 824 Opts.ProgramAction = frontend::PrintPreamble; break; 825 case OPT_E: 826 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 827 case OPT_rewrite_macros: 828 Opts.ProgramAction = frontend::RewriteMacros; break; 829 case OPT_rewrite_objc: 830 Opts.ProgramAction = frontend::RewriteObjC; break; 831 case OPT_rewrite_test: 832 Opts.ProgramAction = frontend::RewriteTest; break; 833 case OPT_analyze: 834 Opts.ProgramAction = frontend::RunAnalysis; break; 835 case OPT_migrate: 836 Opts.ProgramAction = frontend::MigrateSource; break; 837 case OPT_Eonly: 838 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 839 } 840 } 841 842 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 843 Opts.Plugins.push_back(A->getValue(0)); 844 Opts.ProgramAction = frontend::PluginAction; 845 Opts.ActionName = A->getValue(); 846 847 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 848 end = Args.filtered_end(); it != end; ++it) { 849 if ((*it)->getValue(0) == Opts.ActionName) 850 Opts.PluginArgs.push_back((*it)->getValue(1)); 851 } 852 } 853 854 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 855 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 856 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 857 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 858 end = Args.filtered_end(); it != end; ++it) { 859 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 860 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 861 } 862 } 863 864 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 865 Opts.CodeCompletionAt = 866 ParsedSourceLocation::FromString(A->getValue()); 867 if (Opts.CodeCompletionAt.FileName.empty()) 868 Diags.Report(diag::err_drv_invalid_value) 869 << A->getAsString(Args) << A->getValue(); 870 } 871 Opts.DisableFree = Args.hasArg(OPT_disable_free); 872 873 Opts.OutputFile = Args.getLastArgValue(OPT_o); 874 Opts.Plugins = Args.getAllArgValues(OPT_load); 875 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 876 Opts.ShowHelp = Args.hasArg(OPT_help); 877 Opts.ShowStats = Args.hasArg(OPT_print_stats); 878 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 879 Opts.ShowVersion = Args.hasArg(OPT_version); 880 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 881 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 882 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 883 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 884 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 885 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 886 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 887 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 888 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 889 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 890 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 891 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 892 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 893 894 Opts.CodeCompleteOpts.IncludeMacros 895 = Args.hasArg(OPT_code_completion_macros); 896 Opts.CodeCompleteOpts.IncludeCodePatterns 897 = Args.hasArg(OPT_code_completion_patterns); 898 Opts.CodeCompleteOpts.IncludeGlobals 899 = !Args.hasArg(OPT_no_code_completion_globals); 900 Opts.CodeCompleteOpts.IncludeBriefComments 901 = Args.hasArg(OPT_code_completion_brief_comments); 902 903 Opts.OverrideRecordLayoutsFile 904 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 905 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 906 OPT_arcmt_modify, 907 OPT_arcmt_migrate)) { 908 switch (A->getOption().getID()) { 909 default: 910 llvm_unreachable("missed a case"); 911 case OPT_arcmt_check: 912 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 913 break; 914 case OPT_arcmt_modify: 915 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 916 break; 917 case OPT_arcmt_migrate: 918 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 919 break; 920 } 921 } 922 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 923 Opts.ARCMTMigrateReportOut 924 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 925 Opts.ARCMTMigrateEmitARCErrors 926 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 927 928 if (Args.hasArg(OPT_objcmt_migrate_literals)) 929 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 930 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 931 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 932 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 933 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 934 if (Args.hasArg(OPT_objcmt_migrate_property)) 935 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 936 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 937 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 938 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 939 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 940 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 941 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 942 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 943 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 944 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 945 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 946 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 947 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 948 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 949 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 950 if (Args.hasArg(OPT_objcmt_atomic_property)) 951 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 952 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 953 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 954 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 955 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 956 if (Args.hasArg(OPT_objcmt_migrate_all)) 957 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 958 959 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 960 961 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 962 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 963 Diags.Report(diag::err_drv_argument_not_allowed_with) 964 << "ARC migration" << "ObjC migration"; 965 } 966 967 InputKind DashX = IK_None; 968 if (const Arg *A = Args.getLastArg(OPT_x)) { 969 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 970 .Case("c", IK_C) 971 .Case("cl", IK_OpenCL) 972 .Case("cuda", IK_CUDA) 973 .Case("c++", IK_CXX) 974 .Case("objective-c", IK_ObjC) 975 .Case("objective-c++", IK_ObjCXX) 976 .Case("cpp-output", IK_PreprocessedC) 977 .Case("assembler-with-cpp", IK_Asm) 978 .Case("c++-cpp-output", IK_PreprocessedCXX) 979 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 980 .Case("objc-cpp-output", IK_PreprocessedObjC) 981 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 982 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 983 .Case("c-header", IK_C) 984 .Case("cl-header", IK_OpenCL) 985 .Case("objective-c-header", IK_ObjC) 986 .Case("c++-header", IK_CXX) 987 .Case("objective-c++-header", IK_ObjCXX) 988 .Cases("ast", "pcm", IK_AST) 989 .Case("ir", IK_LLVM_IR) 990 .Default(IK_None); 991 if (DashX == IK_None) 992 Diags.Report(diag::err_drv_invalid_value) 993 << A->getAsString(Args) << A->getValue(); 994 } 995 996 // '-' is the default input if none is given. 997 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 998 Opts.Inputs.clear(); 999 if (Inputs.empty()) 1000 Inputs.push_back("-"); 1001 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1002 InputKind IK = DashX; 1003 if (IK == IK_None) { 1004 IK = FrontendOptions::getInputKindForExtension( 1005 StringRef(Inputs[i]).rsplit('.').second); 1006 // FIXME: Remove this hack. 1007 if (i == 0) 1008 DashX = IK; 1009 } 1010 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 1011 } 1012 1013 return DashX; 1014 } 1015 1016 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1017 void *MainAddr) { 1018 std::string ClangExecutable = 1019 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1020 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1021 1022 // Compute the path to the resource directory. 1023 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1024 SmallString<128> P(Dir); 1025 if (ClangResourceDir != "") { 1026 llvm::sys::path::append(P, ClangResourceDir); 1027 } else { 1028 StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX); 1029 llvm::sys::path::append(P, "..", Twine("lib") + ClangLibdirSuffix, "clang", 1030 CLANG_VERSION_STRING); 1031 } 1032 1033 return P.str(); 1034 } 1035 1036 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1037 using namespace options; 1038 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1039 Opts.Verbose = Args.hasArg(OPT_v); 1040 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1041 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1042 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1043 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1044 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1045 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1046 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1047 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1048 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1049 // -fmodules implies -fmodule-maps 1050 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules); 1051 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1052 Opts.ModuleCachePruneInterval = 1053 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1054 Opts.ModuleCachePruneAfter = 1055 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1056 Opts.ModulesValidateOncePerBuildSession = 1057 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1058 Opts.BuildSessionTimestamp = 1059 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1060 Opts.ModulesValidateSystemHeaders = 1061 Args.hasArg(OPT_fmodules_validate_system_headers); 1062 1063 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 1064 ie = Args.filtered_end(); 1065 it != ie; ++it) { 1066 StringRef MacroDef = (*it)->getValue(); 1067 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1068 } 1069 1070 // Add -I..., -F..., and -index-header-map options in order. 1071 bool IsIndexHeaderMap = false; 1072 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 1073 OPT_index_header_map), 1074 ie = Args.filtered_end(); it != ie; ++it) { 1075 if ((*it)->getOption().matches(OPT_index_header_map)) { 1076 // -index-header-map applies to the next -I or -F. 1077 IsIndexHeaderMap = true; 1078 continue; 1079 } 1080 1081 frontend::IncludeDirGroup Group 1082 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 1083 1084 Opts.AddPath((*it)->getValue(), Group, 1085 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 1086 IsIndexHeaderMap = false; 1087 } 1088 1089 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1090 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1091 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 1092 OPT_iwithprefixbefore), 1093 ie = Args.filtered_end(); it != ie; ++it) { 1094 const Arg *A = *it; 1095 if (A->getOption().matches(OPT_iprefix)) 1096 Prefix = A->getValue(); 1097 else if (A->getOption().matches(OPT_iwithprefix)) 1098 Opts.AddPath(Prefix.str() + A->getValue(), 1099 frontend::After, false, true); 1100 else 1101 Opts.AddPath(Prefix.str() + A->getValue(), 1102 frontend::Angled, false, true); 1103 } 1104 1105 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 1106 ie = Args.filtered_end(); it != ie; ++it) 1107 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 1108 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 1109 ie = Args.filtered_end(); it != ie; ++it) 1110 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 1111 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 1112 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 1113 Opts.AddPath((*it)->getValue(), frontend::System, false, 1114 !(*it)->getOption().matches(OPT_iwithsysroot)); 1115 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 1116 ie = Args.filtered_end(); it != ie; ++it) 1117 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 1118 1119 // Add the paths for the various language specific isystem flags. 1120 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 1121 ie = Args.filtered_end(); it != ie; ++it) 1122 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 1123 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 1124 ie = Args.filtered_end(); it != ie; ++it) 1125 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 1126 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 1127 ie = Args.filtered_end(); it != ie; ++it) 1128 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 1129 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 1130 ie = Args.filtered_end(); it != ie; ++it) 1131 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 1132 1133 // Add the internal paths from a driver that detects standard include paths. 1134 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 1135 OPT_internal_externc_isystem), 1136 E = Args.filtered_end(); 1137 I != E; ++I) { 1138 frontend::IncludeDirGroup Group = frontend::System; 1139 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 1140 Group = frontend::ExternCSystem; 1141 Opts.AddPath((*I)->getValue(), Group, false, true); 1142 } 1143 1144 // Add the path prefixes which are implicitly treated as being system headers. 1145 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix, 1146 OPT_no_system_header_prefix), 1147 E = Args.filtered_end(); 1148 I != E; ++I) 1149 Opts.AddSystemHeaderPrefix( 1150 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix)); 1151 1152 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay), 1153 E = Args.filtered_end(); I != E; ++I) 1154 Opts.AddVFSOverlayFile((*I)->getValue()); 1155 } 1156 1157 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1158 LangStandard::Kind LangStd) { 1159 // Set some properties which depend solely on the input kind; it would be nice 1160 // to move these to the language standard, and have the driver resolve the 1161 // input kind + language standard. 1162 if (IK == IK_Asm) { 1163 Opts.AsmPreprocessor = 1; 1164 } else if (IK == IK_ObjC || 1165 IK == IK_ObjCXX || 1166 IK == IK_PreprocessedObjC || 1167 IK == IK_PreprocessedObjCXX) { 1168 Opts.ObjC1 = Opts.ObjC2 = 1; 1169 } 1170 1171 if (LangStd == LangStandard::lang_unspecified) { 1172 // Based on the base language, pick one. 1173 switch (IK) { 1174 case IK_None: 1175 case IK_AST: 1176 case IK_LLVM_IR: 1177 llvm_unreachable("Invalid input kind!"); 1178 case IK_OpenCL: 1179 LangStd = LangStandard::lang_opencl; 1180 break; 1181 case IK_CUDA: 1182 LangStd = LangStandard::lang_cuda; 1183 break; 1184 case IK_Asm: 1185 case IK_C: 1186 case IK_PreprocessedC: 1187 case IK_ObjC: 1188 case IK_PreprocessedObjC: 1189 LangStd = LangStandard::lang_gnu11; 1190 break; 1191 case IK_CXX: 1192 case IK_PreprocessedCXX: 1193 case IK_ObjCXX: 1194 case IK_PreprocessedObjCXX: 1195 LangStd = LangStandard::lang_gnucxx98; 1196 break; 1197 } 1198 } 1199 1200 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1201 Opts.LineComment = Std.hasLineComments(); 1202 Opts.C99 = Std.isC99(); 1203 Opts.C11 = Std.isC11(); 1204 Opts.CPlusPlus = Std.isCPlusPlus(); 1205 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1206 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1207 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1208 Opts.Digraphs = Std.hasDigraphs(); 1209 Opts.GNUMode = Std.isGNUMode(); 1210 Opts.GNUInline = !Std.isC99(); 1211 Opts.HexFloats = Std.hasHexFloats(); 1212 Opts.ImplicitInt = Std.hasImplicitInt(); 1213 1214 // Set OpenCL Version. 1215 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1216 if (LangStd == LangStandard::lang_opencl) 1217 Opts.OpenCLVersion = 100; 1218 else if (LangStd == LangStandard::lang_opencl11) 1219 Opts.OpenCLVersion = 110; 1220 else if (LangStd == LangStandard::lang_opencl12) 1221 Opts.OpenCLVersion = 120; 1222 else if (LangStd == LangStandard::lang_opencl20) 1223 Opts.OpenCLVersion = 200; 1224 1225 // OpenCL has some additional defaults. 1226 if (Opts.OpenCL) { 1227 Opts.AltiVec = 0; 1228 Opts.CXXOperatorNames = 1; 1229 Opts.LaxVectorConversions = 0; 1230 Opts.DefaultFPContract = 1; 1231 Opts.NativeHalfType = 1; 1232 } 1233 1234 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA; 1235 1236 // OpenCL and C++ both have bool, true, false keywords. 1237 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1238 1239 // OpenCL has half keyword 1240 Opts.Half = Opts.OpenCL; 1241 1242 // C++ has wchar_t keyword. 1243 Opts.WChar = Opts.CPlusPlus; 1244 1245 Opts.GNUKeywords = Opts.GNUMode; 1246 Opts.CXXOperatorNames = Opts.CPlusPlus; 1247 1248 Opts.DollarIdents = !Opts.AsmPreprocessor; 1249 1250 // C++14 onwards has sized global deallocation functions. 1251 Opts.SizedDeallocation = Opts.CPlusPlus14; 1252 } 1253 1254 /// Attempt to parse a visibility value out of the given argument. 1255 static Visibility parseVisibility(Arg *arg, ArgList &args, 1256 DiagnosticsEngine &diags) { 1257 StringRef value = arg->getValue(); 1258 if (value == "default") { 1259 return DefaultVisibility; 1260 } else if (value == "hidden") { 1261 return HiddenVisibility; 1262 } else if (value == "protected") { 1263 // FIXME: diagnose if target does not support protected visibility 1264 return ProtectedVisibility; 1265 } 1266 1267 diags.Report(diag::err_drv_invalid_value) 1268 << arg->getAsString(args) << value; 1269 return DefaultVisibility; 1270 } 1271 1272 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) { 1273 auto Arg = Args.getLastArg(OPT_fms_compatibility_version); 1274 if (!Arg) 1275 return 0; 1276 1277 // The MSC versioning scheme involves four versioning components: 1278 // - Major 1279 // - Minor 1280 // - Build 1281 // - Patch 1282 // 1283 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value. 1284 // Additionally, the value may be provided in the form of a more readable 1285 // MM.mm.bbbbb.pp version. 1286 // 1287 // Unfortunately, due to the bit-width limitations, we cannot currently encode 1288 // the value for the patch level. 1289 1290 unsigned VC[4] = {0}; 1291 StringRef Value = Arg->getValue(); 1292 SmallVector<StringRef, 4> Components; 1293 1294 Value.split(Components, ".", llvm::array_lengthof(VC)); 1295 for (unsigned CI = 0, 1296 CE = std::min(Components.size(), llvm::array_lengthof(VC)); 1297 CI < CE; ++CI) { 1298 if (Components[CI].getAsInteger(10, VC[CI])) { 1299 Diags.Report(diag::err_drv_invalid_value) 1300 << Arg->getAsString(Args) << Value; 1301 return 0; 1302 } 1303 } 1304 1305 // FIXME we cannot encode the patch level 1306 return VC[0] * 10000000 + VC[1] * 100000 + VC[2]; 1307 } 1308 1309 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1310 DiagnosticsEngine &Diags) { 1311 // FIXME: Cleanup per-file based stuff. 1312 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1313 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1314 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1315 #define LANGSTANDARD(id, name, desc, features) \ 1316 .Case(name, LangStandard::lang_##id) 1317 #include "clang/Frontend/LangStandards.def" 1318 .Default(LangStandard::lang_unspecified); 1319 if (LangStd == LangStandard::lang_unspecified) 1320 Diags.Report(diag::err_drv_invalid_value) 1321 << A->getAsString(Args) << A->getValue(); 1322 else { 1323 // Valid standard, check to make sure language and standard are 1324 // compatible. 1325 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1326 switch (IK) { 1327 case IK_C: 1328 case IK_ObjC: 1329 case IK_PreprocessedC: 1330 case IK_PreprocessedObjC: 1331 if (!(Std.isC89() || Std.isC99())) 1332 Diags.Report(diag::err_drv_argument_not_allowed_with) 1333 << A->getAsString(Args) << "C/ObjC"; 1334 break; 1335 case IK_CXX: 1336 case IK_ObjCXX: 1337 case IK_PreprocessedCXX: 1338 case IK_PreprocessedObjCXX: 1339 if (!Std.isCPlusPlus()) 1340 Diags.Report(diag::err_drv_argument_not_allowed_with) 1341 << A->getAsString(Args) << "C++/ObjC++"; 1342 break; 1343 case IK_OpenCL: 1344 if (!Std.isC99()) 1345 Diags.Report(diag::err_drv_argument_not_allowed_with) 1346 << A->getAsString(Args) << "OpenCL"; 1347 break; 1348 case IK_CUDA: 1349 if (!Std.isCPlusPlus()) 1350 Diags.Report(diag::err_drv_argument_not_allowed_with) 1351 << A->getAsString(Args) << "CUDA"; 1352 break; 1353 default: 1354 break; 1355 } 1356 } 1357 } 1358 1359 // -cl-std only applies for OpenCL language standards. 1360 // Override the -std option in this case. 1361 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1362 LangStandard::Kind OpenCLLangStd 1363 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1364 .Case("CL", LangStandard::lang_opencl) 1365 .Case("CL1.1", LangStandard::lang_opencl11) 1366 .Case("CL1.2", LangStandard::lang_opencl12) 1367 .Case("CL2.0", LangStandard::lang_opencl20) 1368 .Default(LangStandard::lang_unspecified); 1369 1370 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1371 Diags.Report(diag::err_drv_invalid_value) 1372 << A->getAsString(Args) << A->getValue(); 1373 } 1374 else 1375 LangStd = OpenCLLangStd; 1376 } 1377 1378 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1379 1380 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1381 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1382 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1383 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1384 // name, as it doesn't seem a useful distinction. 1385 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1386 Opts.GNUKeywords); 1387 1388 if (Args.hasArg(OPT_fno_operator_names)) 1389 Opts.CXXOperatorNames = 0; 1390 1391 if (Args.hasArg(OPT_fcuda_is_device)) 1392 Opts.CUDAIsDevice = 1; 1393 1394 if (Opts.ObjC1) { 1395 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1396 StringRef value = arg->getValue(); 1397 if (Opts.ObjCRuntime.tryParse(value)) 1398 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1399 } 1400 1401 if (Args.hasArg(OPT_fobjc_gc_only)) 1402 Opts.setGC(LangOptions::GCOnly); 1403 else if (Args.hasArg(OPT_fobjc_gc)) 1404 Opts.setGC(LangOptions::HybridGC); 1405 else if (Args.hasArg(OPT_fobjc_arc)) { 1406 Opts.ObjCAutoRefCount = 1; 1407 if (!Opts.ObjCRuntime.allowsARC()) 1408 Diags.Report(diag::err_arc_unsupported_on_runtime); 1409 1410 // Only set ObjCARCWeak if ARC is enabled. 1411 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1412 Opts.ObjCARCWeak = 1; 1413 else 1414 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1415 } 1416 1417 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1418 Opts.ObjCInferRelatedResultType = 0; 1419 1420 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1421 Opts.ObjCSubscriptingLegacyRuntime = 1422 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1423 } 1424 1425 if (Args.hasArg(OPT_fgnu89_inline)) 1426 Opts.GNUInline = 1; 1427 1428 if (Args.hasArg(OPT_fapple_kext)) { 1429 if (!Opts.CPlusPlus) 1430 Diags.Report(diag::warn_c_kext); 1431 else 1432 Opts.AppleKext = 1; 1433 } 1434 1435 if (Args.hasArg(OPT_print_ivar_layout)) 1436 Opts.ObjCGCBitmapPrint = 1; 1437 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1438 Opts.NoConstantCFStrings = 1; 1439 1440 if (Args.hasArg(OPT_faltivec)) 1441 Opts.AltiVec = 1; 1442 1443 if (Args.hasArg(OPT_pthread)) 1444 Opts.POSIXThreads = 1; 1445 1446 // The value-visibility mode defaults to "default". 1447 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1448 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1449 } else { 1450 Opts.setValueVisibilityMode(DefaultVisibility); 1451 } 1452 1453 // The type-visibility mode defaults to the value-visibility mode. 1454 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1455 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1456 } else { 1457 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1458 } 1459 1460 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1461 Opts.InlineVisibilityHidden = 1; 1462 1463 if (Args.hasArg(OPT_ftrapv)) { 1464 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1465 // Set the handler, if one is specified. 1466 Opts.OverflowHandler = 1467 Args.getLastArgValue(OPT_ftrapv_handler); 1468 } 1469 else if (Args.hasArg(OPT_fwrapv)) 1470 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1471 1472 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1473 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1474 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1475 Opts.MSCompatibilityVersion = parseMSCVersion(Args, Diags); 1476 1477 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1478 // is specified, or -std is set to a conforming mode. 1479 // Trigraphs are disabled by default in c++1z onwards. 1480 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1481 Opts.Trigraphs = 1482 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1483 1484 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1485 OPT_fno_dollars_in_identifiers, 1486 Opts.DollarIdents); 1487 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1488 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1489 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1490 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1491 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1492 Opts.ConstStrings); 1493 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1494 Opts.LaxVectorConversions = 0; 1495 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1496 Opts.ThreadsafeStatics = 0; 1497 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1498 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1499 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1500 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1501 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1502 1503 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1504 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1505 Opts.Blocks = Args.hasArg(OPT_fblocks); 1506 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1507 Opts.Modules = Args.hasArg(OPT_fmodules); 1508 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1509 Opts.ModulesDeclUse = 1510 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1511 Opts.ModulesSearchAll = Opts.Modules && 1512 !Args.hasArg(OPT_fno_modules_search_all) && 1513 Args.hasArg(OPT_fmodules_search_all); 1514 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1515 Opts.ModulesImplicitMaps = Args.hasFlag(OPT_fmodules_implicit_maps, 1516 OPT_fno_modules_implicit_maps, true); 1517 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1518 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1519 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1520 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1521 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1522 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1523 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1524 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1525 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation); 1526 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1527 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1528 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1529 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1530 Opts.InstantiationDepth = 1531 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1532 Opts.ArrowDepth = 1533 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1534 Opts.ConstexprCallDepth = 1535 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1536 Opts.ConstexprStepLimit = 1537 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1538 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1539 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1540 Opts.NumLargeByValueCopy = 1541 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1542 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1543 Opts.ObjCConstantStringClass = 1544 Args.getLastArgValue(OPT_fconstant_string_class); 1545 Opts.ObjCDefaultSynthProperties = 1546 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1547 Opts.EncodeExtendedBlockSig = 1548 Args.hasArg(OPT_fencode_extended_block_signature); 1549 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1550 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1551 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1552 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1553 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1554 Opts.Static = Args.hasArg(OPT_static_define); 1555 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1556 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1557 || Args.hasArg(OPT_fdump_record_layouts); 1558 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1559 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1560 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1561 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1562 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1563 Opts.MRTD = Args.hasArg(OPT_mrtd); 1564 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1565 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1566 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1567 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1568 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1569 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1570 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1571 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1572 Opts.ImplementationOfModule = 1573 Args.getLastArgValue(OPT_fmodule_implementation_of); 1574 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1575 Opts.NativeHalfType = Opts.NativeHalfType; 1576 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns); 1577 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1578 1579 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1580 Opts.CurrentModule != Opts.ImplementationOfModule) { 1581 Diags.Report(diag::err_conflicting_module_names) 1582 << Opts.CurrentModule << Opts.ImplementationOfModule; 1583 } 1584 1585 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1586 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1587 .Case("target", LangOptions::ASMM_Target) 1588 .Case("no", LangOptions::ASMM_Off) 1589 .Case("yes", LangOptions::ASMM_On) 1590 .Default(255)) { 1591 default: 1592 Diags.Report(diag::err_drv_invalid_value) 1593 << "-faddress-space-map-mangling=" << A->getValue(); 1594 break; 1595 case LangOptions::ASMM_Target: 1596 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1597 break; 1598 case LangOptions::ASMM_On: 1599 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1600 break; 1601 case LangOptions::ASMM_Off: 1602 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1603 break; 1604 } 1605 } 1606 1607 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1608 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1609 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1610 A->getValue()) 1611 .Case("single", 1612 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1613 .Case("multiple", 1614 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1615 .Case("virtual", 1616 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1617 .Default(LangOptions::PPTMK_BestCase); 1618 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1619 Diags.Report(diag::err_drv_invalid_value) 1620 << "-fms-memptr-rep=" << A->getValue(); 1621 1622 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1623 } 1624 1625 // Check if -fopenmp= is specified. 1626 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) { 1627 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue()) 1628 .Case("libiomp5", true) 1629 .Default(false); 1630 } 1631 1632 // Record whether the __DEPRECATED define was requested. 1633 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1634 OPT_fno_deprecated_macro, 1635 Opts.Deprecated); 1636 1637 // FIXME: Eliminate this dependency. 1638 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1639 OptSize = getOptimizationLevelSize(Args); 1640 Opts.Optimize = Opt != 0; 1641 Opts.OptimizeSize = OptSize != 0; 1642 1643 // This is the __NO_INLINE__ define, which just depends on things like the 1644 // optimization level and -fno-inline, not actually whether the backend has 1645 // inlining enabled. 1646 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1647 1648 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 1649 Args.hasArg(OPT_cl_fast_relaxed_math); 1650 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 1651 Args.hasArg(OPT_cl_finite_math_only) || 1652 Args.hasArg(OPT_cl_fast_relaxed_math); 1653 1654 Opts.RetainCommentsFromSystemHeaders = 1655 Args.hasArg(OPT_fretain_comments_from_system_headers); 1656 1657 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1658 switch (SSP) { 1659 default: 1660 Diags.Report(diag::err_drv_invalid_value) 1661 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1662 break; 1663 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1664 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1665 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1666 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1667 } 1668 1669 // Parse -fsanitize= arguments. 1670 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1671 Diags, Opts.Sanitize); 1672 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 1673 Opts.SanitizeAddressFieldPadding = 1674 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 1675 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 1676 } 1677 1678 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1679 FileManager &FileMgr, 1680 DiagnosticsEngine &Diags) { 1681 using namespace options; 1682 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1683 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1684 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1685 Opts.TokenCache = A->getValue(); 1686 else 1687 Opts.TokenCache = Opts.ImplicitPTHInclude; 1688 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1689 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1690 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1691 1692 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1693 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1694 ie = Args.filtered_end(); it != ie; ++it) { 1695 const Arg *A = *it; 1696 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1697 } 1698 1699 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1700 StringRef Value(A->getValue()); 1701 size_t Comma = Value.find(','); 1702 unsigned Bytes = 0; 1703 unsigned EndOfLine = 0; 1704 1705 if (Comma == StringRef::npos || 1706 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1707 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1708 Diags.Report(diag::err_drv_preamble_format); 1709 else { 1710 Opts.PrecompiledPreambleBytes.first = Bytes; 1711 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1712 } 1713 } 1714 1715 // Add macros from the command line. 1716 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1717 ie = Args.filtered_end(); it != ie; ++it) { 1718 if ((*it)->getOption().matches(OPT_D)) 1719 Opts.addMacroDef((*it)->getValue()); 1720 else 1721 Opts.addMacroUndef((*it)->getValue()); 1722 } 1723 1724 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1725 1726 // Add the ordered list of -includes. 1727 for (arg_iterator it = Args.filtered_begin(OPT_include), 1728 ie = Args.filtered_end(); it != ie; ++it) { 1729 const Arg *A = *it; 1730 Opts.Includes.push_back(A->getValue()); 1731 } 1732 1733 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1734 ie = Args.filtered_end(); it != ie; ++it) { 1735 const Arg *A = *it; 1736 Opts.ChainedIncludes.push_back(A->getValue()); 1737 } 1738 1739 // Include 'altivec.h' if -faltivec option present 1740 if (Args.hasArg(OPT_faltivec)) 1741 Opts.Includes.push_back("altivec.h"); 1742 1743 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1744 ie = Args.filtered_end(); it != ie; ++it) { 1745 const Arg *A = *it; 1746 std::pair<StringRef,StringRef> Split = 1747 StringRef(A->getValue()).split(';'); 1748 1749 if (Split.second.empty()) { 1750 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1751 continue; 1752 } 1753 1754 Opts.addRemappedFile(Split.first, Split.second); 1755 } 1756 1757 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1758 StringRef Name = A->getValue(); 1759 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1760 .Case("libc++", ARCXX_libcxx) 1761 .Case("libstdc++", ARCXX_libstdcxx) 1762 .Case("none", ARCXX_nolib) 1763 .Default(~0U); 1764 if (Library == ~0U) 1765 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1766 else 1767 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1768 } 1769 } 1770 1771 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1772 ArgList &Args, 1773 frontend::ActionKind Action) { 1774 using namespace options; 1775 1776 switch (Action) { 1777 case frontend::ASTDeclList: 1778 case frontend::ASTDump: 1779 case frontend::ASTPrint: 1780 case frontend::ASTView: 1781 case frontend::EmitAssembly: 1782 case frontend::EmitBC: 1783 case frontend::EmitHTML: 1784 case frontend::EmitLLVM: 1785 case frontend::EmitLLVMOnly: 1786 case frontend::EmitCodeGenOnly: 1787 case frontend::EmitObj: 1788 case frontend::FixIt: 1789 case frontend::GenerateModule: 1790 case frontend::GeneratePCH: 1791 case frontend::GeneratePTH: 1792 case frontend::ParseSyntaxOnly: 1793 case frontend::ModuleFileInfo: 1794 case frontend::VerifyPCH: 1795 case frontend::PluginAction: 1796 case frontend::PrintDeclContext: 1797 case frontend::RewriteObjC: 1798 case frontend::RewriteTest: 1799 case frontend::RunAnalysis: 1800 case frontend::MigrateSource: 1801 Opts.ShowCPP = 0; 1802 break; 1803 1804 case frontend::DumpRawTokens: 1805 case frontend::DumpTokens: 1806 case frontend::InitOnly: 1807 case frontend::PrintPreamble: 1808 case frontend::PrintPreprocessedInput: 1809 case frontend::RewriteMacros: 1810 case frontend::RunPreprocessorOnly: 1811 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1812 break; 1813 } 1814 1815 Opts.ShowComments = Args.hasArg(OPT_C); 1816 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1817 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1818 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1819 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1820 } 1821 1822 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1823 using namespace options; 1824 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1825 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1826 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1827 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1828 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1829 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1830 1831 // Use the default target triple if unspecified. 1832 if (Opts.Triple.empty()) 1833 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1834 } 1835 1836 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1837 const char *const *ArgBegin, 1838 const char *const *ArgEnd, 1839 DiagnosticsEngine &Diags) { 1840 bool Success = true; 1841 1842 // Parse the arguments. 1843 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1844 const unsigned IncludedFlagsBitmask = options::CC1Option; 1845 unsigned MissingArgIndex, MissingArgCount; 1846 std::unique_ptr<InputArgList> Args( 1847 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount, 1848 IncludedFlagsBitmask)); 1849 1850 // Check for missing argument error. 1851 if (MissingArgCount) { 1852 Diags.Report(diag::err_drv_missing_argument) 1853 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1854 Success = false; 1855 } 1856 1857 // Issue errors on unknown arguments. 1858 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1859 ie = Args->filtered_end(); it != ie; ++it) { 1860 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1861 Success = false; 1862 } 1863 1864 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1865 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1866 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1867 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1868 && Success; 1869 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1870 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1871 // FIXME: We shouldn't have to pass the DashX option around here 1872 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1873 ParseTargetArgs(Res.getTargetOpts(), *Args); 1874 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags, 1875 Res.getTargetOpts()) && Success; 1876 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1877 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1878 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1879 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1880 Res.getLangOpts()->ObjCExceptions = 1; 1881 } 1882 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1883 // PCH file and find the original header name. Remove the need to do that in 1884 // ParsePreprocessorArgs and remove the FileManager 1885 // parameters from the function and the "FileManager.h" #include. 1886 FileManager FileMgr(Res.getFileSystemOpts()); 1887 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1888 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1889 Res.getFrontendOpts().ProgramAction); 1890 return Success; 1891 } 1892 1893 namespace { 1894 1895 class ModuleSignature { 1896 SmallVector<uint64_t, 16> Data; 1897 unsigned CurBit; 1898 uint64_t CurValue; 1899 1900 public: 1901 ModuleSignature() : CurBit(0), CurValue(0) { } 1902 1903 void add(uint64_t Value, unsigned Bits); 1904 void add(StringRef Value); 1905 void flush(); 1906 1907 llvm::APInt getAsInteger() const; 1908 }; 1909 } 1910 1911 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1912 CurValue |= Value << CurBit; 1913 if (CurBit + NumBits < 64) { 1914 CurBit += NumBits; 1915 return; 1916 } 1917 1918 // Add the current word. 1919 Data.push_back(CurValue); 1920 1921 if (CurBit) 1922 CurValue = Value >> (64-CurBit); 1923 else 1924 CurValue = 0; 1925 CurBit = (CurBit+NumBits) & 63; 1926 } 1927 1928 void ModuleSignature::flush() { 1929 if (CurBit == 0) 1930 return; 1931 1932 Data.push_back(CurValue); 1933 CurBit = 0; 1934 CurValue = 0; 1935 } 1936 1937 void ModuleSignature::add(StringRef Value) { 1938 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1939 add(*I, 8); 1940 } 1941 1942 llvm::APInt ModuleSignature::getAsInteger() const { 1943 return llvm::APInt(Data.size() * 64, Data); 1944 } 1945 1946 std::string CompilerInvocation::getModuleHash() const { 1947 // Note: For QoI reasons, the things we use as a hash here should all be 1948 // dumped via the -module-info flag. 1949 using llvm::hash_code; 1950 using llvm::hash_value; 1951 using llvm::hash_combine; 1952 1953 // Start the signature with the compiler version. 1954 // FIXME: We'd rather use something more cryptographically sound than 1955 // CityHash, but this will do for now. 1956 hash_code code = hash_value(getClangFullRepositoryVersion()); 1957 1958 // Extend the signature with the language options 1959 #define LANGOPT(Name, Bits, Default, Description) \ 1960 code = hash_combine(code, LangOpts->Name); 1961 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1962 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1963 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1964 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1965 #include "clang/Basic/LangOptions.def" 1966 1967 // Extend the signature with the target options. 1968 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1969 TargetOpts->ABI); 1970 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1971 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1972 1973 // Extend the signature with preprocessor options. 1974 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1975 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1976 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1977 1978 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1979 I = getPreprocessorOpts().Macros.begin(), 1980 IEnd = getPreprocessorOpts().Macros.end(); 1981 I != IEnd; ++I) { 1982 // If we're supposed to ignore this macro for the purposes of modules, 1983 // don't put it into the hash. 1984 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1985 // Check whether we're ignoring this macro. 1986 StringRef MacroDef = I->first; 1987 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1988 continue; 1989 } 1990 1991 code = hash_combine(code, I->first, I->second); 1992 } 1993 1994 // Extend the signature with the sysroot. 1995 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1996 hsOpts.UseStandardSystemIncludes, 1997 hsOpts.UseStandardCXXIncludes, 1998 hsOpts.UseLibcxx); 1999 code = hash_combine(code, hsOpts.ResourceDir); 2000 2001 // Extend the signature with the user build path. 2002 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2003 2004 // Darwin-specific hack: if we have a sysroot, use the contents and 2005 // modification time of 2006 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2007 // as part of the module hash. 2008 if (!hsOpts.Sysroot.empty()) { 2009 SmallString<128> systemVersionFile; 2010 systemVersionFile += hsOpts.Sysroot; 2011 llvm::sys::path::append(systemVersionFile, "System"); 2012 llvm::sys::path::append(systemVersionFile, "Library"); 2013 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2014 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2015 2016 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2017 llvm::MemoryBuffer::getFile(systemVersionFile.str()); 2018 if (buffer) { 2019 code = hash_combine(code, buffer.get()->getBuffer()); 2020 2021 struct stat statBuf; 2022 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2023 code = hash_combine(code, statBuf.st_mtime); 2024 } 2025 } 2026 2027 #if LLVM_ON_UNIX 2028 // The LockFileManager cannot tell when processes from another host are 2029 // running, so mangle the hostname in to the module hash to separate them. 2030 char hostname[256]; 2031 hostname[0] = 0; 2032 if (gethostname(hostname, 255) == 0) { 2033 // Forcibly null-terminate the result, since POSIX doesn't require that 2034 // truncation result in an error or that truncated names be null-terminated. 2035 hostname[sizeof(hostname)-1] = 0; 2036 code = hash_combine(code, StringRef(hostname)); 2037 } 2038 // Ignore failures in gethostname() by not including the hostname in the hash. 2039 #endif 2040 2041 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2042 } 2043 2044 namespace clang { 2045 2046 template<typename IntTy> 2047 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2048 IntTy Default, 2049 DiagnosticsEngine *Diags) { 2050 IntTy Res = Default; 2051 if (Arg *A = Args.getLastArg(Id)) { 2052 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2053 if (Diags) 2054 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2055 << A->getValue(); 2056 } 2057 } 2058 return Res; 2059 } 2060 2061 2062 // Declared in clang/Frontend/Utils.h. 2063 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2064 DiagnosticsEngine *Diags) { 2065 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2066 } 2067 2068 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2069 uint64_t Default, 2070 DiagnosticsEngine *Diags) { 2071 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2072 } 2073 2074 void BuryPointer(const void *Ptr) { 2075 // This function may be called only a small fixed amount of times per each 2076 // invocation, otherwise we do actually have a leak which we want to report. 2077 // If this function is called more than kGraveYardMaxSize times, the pointers 2078 // will not be properly buried and a leak detector will report a leak, which 2079 // is what we want in such case. 2080 static const size_t kGraveYardMaxSize = 16; 2081 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2082 static std::atomic<unsigned> GraveYardSize; 2083 unsigned Idx = GraveYardSize++; 2084 if (Idx >= kGraveYardMaxSize) 2085 return; 2086 GraveYard[Idx] = Ptr; 2087 } 2088 2089 IntrusiveRefCntPtr<vfs::FileSystem> 2090 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2091 DiagnosticsEngine &Diags) { 2092 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2093 return vfs::getRealFileSystem(); 2094 2095 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2096 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2097 // earlier vfs files are on the bottom 2098 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2099 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2100 llvm::MemoryBuffer::getFile(File); 2101 if (!Buffer) { 2102 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2103 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2104 } 2105 2106 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2107 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr); 2108 if (!FS.get()) { 2109 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2110 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2111 } 2112 Overlay->pushOverlay(FS); 2113 } 2114 return Overlay; 2115 } 2116 } // end namespace clang 2117