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.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 476 OPT_fno_unique_section_names, true); 477 478 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 479 480 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 481 482 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 483 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 484 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 485 486 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 487 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 488 489 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 490 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 491 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 492 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 493 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 494 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 495 Opts.CoverageNoFunctionNamesInData = 496 Args.hasArg(OPT_coverage_no_function_names_in_data); 497 if (Args.hasArg(OPT_coverage_version_EQ)) { 498 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 499 if (CoverageVersion.size() != 4) { 500 Diags.Report(diag::err_drv_invalid_value) 501 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 502 << CoverageVersion; 503 } else { 504 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 505 } 506 } 507 } 508 509 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 510 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 511 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 512 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 513 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 514 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 515 Opts.SanitizeCoverage = 516 getLastArgIntValue(Args, OPT_fsanitize_coverage, 0, Diags); 517 Opts.SanitizeMemoryTrackOrigins = 518 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 519 Opts.SanitizeUndefinedTrapOnError = 520 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 521 Opts.SSPBufferSize = 522 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 523 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 524 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 525 StringRef Val = A->getValue(); 526 unsigned StackAlignment = Opts.StackAlignment; 527 Val.getAsInteger(10, StackAlignment); 528 Opts.StackAlignment = StackAlignment; 529 } 530 531 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 532 StringRef Val = A->getValue(); 533 unsigned StackProbeSize = Opts.StackProbeSize; 534 Val.getAsInteger(0, StackProbeSize); 535 Opts.StackProbeSize = StackProbeSize; 536 } 537 538 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 539 StringRef Name = A->getValue(); 540 unsigned Method = llvm::StringSwitch<unsigned>(Name) 541 .Case("legacy", CodeGenOptions::Legacy) 542 .Case("non-legacy", CodeGenOptions::NonLegacy) 543 .Case("mixed", CodeGenOptions::Mixed) 544 .Default(~0U); 545 if (Method == ~0U) { 546 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 547 Success = false; 548 } else { 549 Opts.setObjCDispatchMethod( 550 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 551 } 552 } 553 554 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 555 StringRef Name = A->getValue(); 556 unsigned Model = llvm::StringSwitch<unsigned>(Name) 557 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 558 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 559 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 560 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 561 .Default(~0U); 562 if (Model == ~0U) { 563 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 564 Success = false; 565 } else { 566 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 567 } 568 } 569 570 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 571 StringRef Val = A->getValue(); 572 if (Val == "fast") 573 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 574 else if (Val == "on") 575 Opts.setFPContractMode(CodeGenOptions::FPC_On); 576 else if (Val == "off") 577 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 578 else 579 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 580 } 581 582 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 583 if (A->getOption().matches(OPT_fpcc_struct_return)) { 584 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 585 } else { 586 assert(A->getOption().matches(OPT_freg_struct_return)); 587 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 588 } 589 } 590 591 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 592 bool NeedLocTracking = false; 593 594 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 595 Opts.OptimizationRemarkPattern = 596 GenerateOptimizationRemarkRegex(Diags, Args, A); 597 NeedLocTracking = true; 598 } 599 600 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 601 Opts.OptimizationRemarkMissedPattern = 602 GenerateOptimizationRemarkRegex(Diags, Args, A); 603 NeedLocTracking = true; 604 } 605 606 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 607 Opts.OptimizationRemarkAnalysisPattern = 608 GenerateOptimizationRemarkRegex(Diags, Args, A); 609 NeedLocTracking = true; 610 } 611 612 // If the user requested to use a sample profile for PGO, then the 613 // backend will need to track source location information so the profile 614 // can be incorporated into the IR. 615 if (!Opts.SampleProfileFile.empty()) 616 NeedLocTracking = true; 617 618 // If the user requested a flag that requires source locations available in 619 // the backend, make sure that the backend tracks source location information. 620 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 621 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 622 623 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 624 625 // Parse -fsanitize-recover= arguments. 626 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 627 parseSanitizerKinds("-fsanitize-recover=", 628 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 629 Opts.SanitizeRecover); 630 631 return Success; 632 } 633 634 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 635 ArgList &Args) { 636 using namespace options; 637 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 638 Opts.Targets = Args.getAllArgValues(OPT_MT); 639 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 640 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 641 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 642 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 643 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 644 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 645 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 646 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 647 Opts.ModuleDependencyOutputDir = 648 Args.getLastArgValue(OPT_module_dependency_dir); 649 } 650 651 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 652 DiagnosticsEngine *Diags) { 653 using namespace options; 654 bool Success = true; 655 656 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 657 if (Arg *A = 658 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 659 Opts.DiagnosticSerializationFile = A->getValue(); 660 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 661 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 662 Opts.Pedantic = Args.hasArg(OPT_pedantic); 663 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 664 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 665 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 666 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 667 OPT_fno_show_column, 668 /*Default=*/true); 669 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 670 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 671 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 672 673 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 674 675 // Default behavior is to not to show note include stacks. 676 Opts.ShowNoteIncludeStack = false; 677 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 678 OPT_fno_diagnostics_show_note_include_stack)) 679 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 680 Opts.ShowNoteIncludeStack = true; 681 682 StringRef ShowOverloads = 683 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 684 if (ShowOverloads == "best") 685 Opts.setShowOverloads(Ovl_Best); 686 else if (ShowOverloads == "all") 687 Opts.setShowOverloads(Ovl_All); 688 else { 689 Success = false; 690 if (Diags) 691 Diags->Report(diag::err_drv_invalid_value) 692 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 693 << ShowOverloads; 694 } 695 696 StringRef ShowCategory = 697 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 698 if (ShowCategory == "none") 699 Opts.ShowCategories = 0; 700 else if (ShowCategory == "id") 701 Opts.ShowCategories = 1; 702 else if (ShowCategory == "name") 703 Opts.ShowCategories = 2; 704 else { 705 Success = false; 706 if (Diags) 707 Diags->Report(diag::err_drv_invalid_value) 708 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 709 << ShowCategory; 710 } 711 712 StringRef Format = 713 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 714 if (Format == "clang") 715 Opts.setFormat(DiagnosticOptions::Clang); 716 else if (Format == "msvc") 717 Opts.setFormat(DiagnosticOptions::MSVC); 718 else if (Format == "msvc-fallback") { 719 Opts.setFormat(DiagnosticOptions::MSVC); 720 Opts.CLFallbackMode = true; 721 } else if (Format == "vi") 722 Opts.setFormat(DiagnosticOptions::Vi); 723 else { 724 Success = false; 725 if (Diags) 726 Diags->Report(diag::err_drv_invalid_value) 727 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 728 << Format; 729 } 730 731 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 732 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 733 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 734 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 735 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 736 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 737 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 738 Opts.MacroBacktraceLimit = 739 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 740 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 741 Opts.TemplateBacktraceLimit = getLastArgIntValue( 742 Args, OPT_ftemplate_backtrace_limit, 743 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 744 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 745 Args, OPT_fconstexpr_backtrace_limit, 746 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 747 Opts.SpellCheckingLimit = getLastArgIntValue( 748 Args, OPT_fspell_checking_limit, 749 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 750 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 751 DiagnosticOptions::DefaultTabStop, Diags); 752 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 753 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 754 if (Diags) 755 Diags->Report(diag::warn_ignoring_ftabstop_value) 756 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 757 } 758 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 759 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 760 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 761 762 return Success; 763 } 764 765 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 766 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 767 } 768 769 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 770 DiagnosticsEngine &Diags) { 771 using namespace options; 772 Opts.ProgramAction = frontend::ParseSyntaxOnly; 773 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 774 switch (A->getOption().getID()) { 775 default: 776 llvm_unreachable("Invalid option in group!"); 777 case OPT_ast_list: 778 Opts.ProgramAction = frontend::ASTDeclList; break; 779 case OPT_ast_dump: 780 case OPT_ast_dump_lookups: 781 Opts.ProgramAction = frontend::ASTDump; break; 782 case OPT_ast_print: 783 Opts.ProgramAction = frontend::ASTPrint; break; 784 case OPT_ast_view: 785 Opts.ProgramAction = frontend::ASTView; break; 786 case OPT_dump_raw_tokens: 787 Opts.ProgramAction = frontend::DumpRawTokens; break; 788 case OPT_dump_tokens: 789 Opts.ProgramAction = frontend::DumpTokens; break; 790 case OPT_S: 791 Opts.ProgramAction = frontend::EmitAssembly; break; 792 case OPT_emit_llvm_bc: 793 Opts.ProgramAction = frontend::EmitBC; break; 794 case OPT_emit_html: 795 Opts.ProgramAction = frontend::EmitHTML; break; 796 case OPT_emit_llvm: 797 Opts.ProgramAction = frontend::EmitLLVM; break; 798 case OPT_emit_llvm_only: 799 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 800 case OPT_emit_codegen_only: 801 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 802 case OPT_emit_obj: 803 Opts.ProgramAction = frontend::EmitObj; break; 804 case OPT_fixit_EQ: 805 Opts.FixItSuffix = A->getValue(); 806 // fall-through! 807 case OPT_fixit: 808 Opts.ProgramAction = frontend::FixIt; break; 809 case OPT_emit_module: 810 Opts.ProgramAction = frontend::GenerateModule; break; 811 case OPT_emit_pch: 812 Opts.ProgramAction = frontend::GeneratePCH; break; 813 case OPT_emit_pth: 814 Opts.ProgramAction = frontend::GeneratePTH; break; 815 case OPT_init_only: 816 Opts.ProgramAction = frontend::InitOnly; break; 817 case OPT_fsyntax_only: 818 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 819 case OPT_module_file_info: 820 Opts.ProgramAction = frontend::ModuleFileInfo; break; 821 case OPT_verify_pch: 822 Opts.ProgramAction = frontend::VerifyPCH; break; 823 case OPT_print_decl_contexts: 824 Opts.ProgramAction = frontend::PrintDeclContext; break; 825 case OPT_print_preamble: 826 Opts.ProgramAction = frontend::PrintPreamble; break; 827 case OPT_E: 828 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 829 case OPT_rewrite_macros: 830 Opts.ProgramAction = frontend::RewriteMacros; break; 831 case OPT_rewrite_objc: 832 Opts.ProgramAction = frontend::RewriteObjC; break; 833 case OPT_rewrite_test: 834 Opts.ProgramAction = frontend::RewriteTest; break; 835 case OPT_analyze: 836 Opts.ProgramAction = frontend::RunAnalysis; break; 837 case OPT_migrate: 838 Opts.ProgramAction = frontend::MigrateSource; break; 839 case OPT_Eonly: 840 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 841 } 842 } 843 844 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 845 Opts.Plugins.push_back(A->getValue(0)); 846 Opts.ProgramAction = frontend::PluginAction; 847 Opts.ActionName = A->getValue(); 848 849 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 850 end = Args.filtered_end(); it != end; ++it) { 851 if ((*it)->getValue(0) == Opts.ActionName) 852 Opts.PluginArgs.push_back((*it)->getValue(1)); 853 } 854 } 855 856 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 857 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 858 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 859 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 860 end = Args.filtered_end(); it != end; ++it) { 861 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 862 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 863 } 864 } 865 866 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 867 Opts.CodeCompletionAt = 868 ParsedSourceLocation::FromString(A->getValue()); 869 if (Opts.CodeCompletionAt.FileName.empty()) 870 Diags.Report(diag::err_drv_invalid_value) 871 << A->getAsString(Args) << A->getValue(); 872 } 873 Opts.DisableFree = Args.hasArg(OPT_disable_free); 874 875 Opts.OutputFile = Args.getLastArgValue(OPT_o); 876 Opts.Plugins = Args.getAllArgValues(OPT_load); 877 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 878 Opts.ShowHelp = Args.hasArg(OPT_help); 879 Opts.ShowStats = Args.hasArg(OPT_print_stats); 880 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 881 Opts.ShowVersion = Args.hasArg(OPT_version); 882 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 883 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 884 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 885 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 886 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 887 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 888 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 889 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 890 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 891 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 892 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 893 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 894 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 895 896 Opts.CodeCompleteOpts.IncludeMacros 897 = Args.hasArg(OPT_code_completion_macros); 898 Opts.CodeCompleteOpts.IncludeCodePatterns 899 = Args.hasArg(OPT_code_completion_patterns); 900 Opts.CodeCompleteOpts.IncludeGlobals 901 = !Args.hasArg(OPT_no_code_completion_globals); 902 Opts.CodeCompleteOpts.IncludeBriefComments 903 = Args.hasArg(OPT_code_completion_brief_comments); 904 905 Opts.OverrideRecordLayoutsFile 906 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 907 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 908 OPT_arcmt_modify, 909 OPT_arcmt_migrate)) { 910 switch (A->getOption().getID()) { 911 default: 912 llvm_unreachable("missed a case"); 913 case OPT_arcmt_check: 914 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 915 break; 916 case OPT_arcmt_modify: 917 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 918 break; 919 case OPT_arcmt_migrate: 920 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 921 break; 922 } 923 } 924 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 925 Opts.ARCMTMigrateReportOut 926 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 927 Opts.ARCMTMigrateEmitARCErrors 928 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 929 930 if (Args.hasArg(OPT_objcmt_migrate_literals)) 931 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 932 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 933 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 934 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 935 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 936 if (Args.hasArg(OPT_objcmt_migrate_property)) 937 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 938 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 939 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 940 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 941 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 942 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 943 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 944 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 945 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 946 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 947 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 948 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 949 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 950 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 951 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 952 if (Args.hasArg(OPT_objcmt_atomic_property)) 953 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 954 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 955 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 956 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 957 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 958 if (Args.hasArg(OPT_objcmt_migrate_all)) 959 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 960 961 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 962 963 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 964 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 965 Diags.Report(diag::err_drv_argument_not_allowed_with) 966 << "ARC migration" << "ObjC migration"; 967 } 968 969 InputKind DashX = IK_None; 970 if (const Arg *A = Args.getLastArg(OPT_x)) { 971 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 972 .Case("c", IK_C) 973 .Case("cl", IK_OpenCL) 974 .Case("cuda", IK_CUDA) 975 .Case("c++", IK_CXX) 976 .Case("objective-c", IK_ObjC) 977 .Case("objective-c++", IK_ObjCXX) 978 .Case("cpp-output", IK_PreprocessedC) 979 .Case("assembler-with-cpp", IK_Asm) 980 .Case("c++-cpp-output", IK_PreprocessedCXX) 981 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 982 .Case("objc-cpp-output", IK_PreprocessedObjC) 983 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 984 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 985 .Case("c-header", IK_C) 986 .Case("cl-header", IK_OpenCL) 987 .Case("objective-c-header", IK_ObjC) 988 .Case("c++-header", IK_CXX) 989 .Case("objective-c++-header", IK_ObjCXX) 990 .Cases("ast", "pcm", IK_AST) 991 .Case("ir", IK_LLVM_IR) 992 .Default(IK_None); 993 if (DashX == IK_None) 994 Diags.Report(diag::err_drv_invalid_value) 995 << A->getAsString(Args) << A->getValue(); 996 } 997 998 // '-' is the default input if none is given. 999 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1000 Opts.Inputs.clear(); 1001 if (Inputs.empty()) 1002 Inputs.push_back("-"); 1003 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1004 InputKind IK = DashX; 1005 if (IK == IK_None) { 1006 IK = FrontendOptions::getInputKindForExtension( 1007 StringRef(Inputs[i]).rsplit('.').second); 1008 // FIXME: Remove this hack. 1009 if (i == 0) 1010 DashX = IK; 1011 } 1012 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 1013 } 1014 1015 return DashX; 1016 } 1017 1018 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1019 void *MainAddr) { 1020 std::string ClangExecutable = 1021 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1022 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1023 1024 // Compute the path to the resource directory. 1025 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1026 SmallString<128> P(Dir); 1027 if (ClangResourceDir != "") { 1028 llvm::sys::path::append(P, ClangResourceDir); 1029 } else { 1030 StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX); 1031 llvm::sys::path::append(P, "..", Twine("lib") + ClangLibdirSuffix, "clang", 1032 CLANG_VERSION_STRING); 1033 } 1034 1035 return P.str(); 1036 } 1037 1038 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1039 using namespace options; 1040 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1041 Opts.Verbose = Args.hasArg(OPT_v); 1042 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1043 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1044 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1045 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1046 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1047 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1048 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1049 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1050 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1051 // -fmodules implies -fmodule-maps 1052 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules); 1053 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1054 Opts.ModuleCachePruneInterval = 1055 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1056 Opts.ModuleCachePruneAfter = 1057 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1058 Opts.ModulesValidateOncePerBuildSession = 1059 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1060 Opts.BuildSessionTimestamp = 1061 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1062 Opts.ModulesValidateSystemHeaders = 1063 Args.hasArg(OPT_fmodules_validate_system_headers); 1064 1065 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 1066 ie = Args.filtered_end(); 1067 it != ie; ++it) { 1068 StringRef MacroDef = (*it)->getValue(); 1069 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1070 } 1071 1072 // Add -I..., -F..., and -index-header-map options in order. 1073 bool IsIndexHeaderMap = false; 1074 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 1075 OPT_index_header_map), 1076 ie = Args.filtered_end(); it != ie; ++it) { 1077 if ((*it)->getOption().matches(OPT_index_header_map)) { 1078 // -index-header-map applies to the next -I or -F. 1079 IsIndexHeaderMap = true; 1080 continue; 1081 } 1082 1083 frontend::IncludeDirGroup Group 1084 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 1085 1086 Opts.AddPath((*it)->getValue(), Group, 1087 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 1088 IsIndexHeaderMap = false; 1089 } 1090 1091 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1092 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1093 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 1094 OPT_iwithprefixbefore), 1095 ie = Args.filtered_end(); it != ie; ++it) { 1096 const Arg *A = *it; 1097 if (A->getOption().matches(OPT_iprefix)) 1098 Prefix = A->getValue(); 1099 else if (A->getOption().matches(OPT_iwithprefix)) 1100 Opts.AddPath(Prefix.str() + A->getValue(), 1101 frontend::After, false, true); 1102 else 1103 Opts.AddPath(Prefix.str() + A->getValue(), 1104 frontend::Angled, false, true); 1105 } 1106 1107 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 1108 ie = Args.filtered_end(); it != ie; ++it) 1109 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 1110 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 1111 ie = Args.filtered_end(); it != ie; ++it) 1112 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 1113 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 1114 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 1115 Opts.AddPath((*it)->getValue(), frontend::System, false, 1116 !(*it)->getOption().matches(OPT_iwithsysroot)); 1117 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 1118 ie = Args.filtered_end(); it != ie; ++it) 1119 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 1120 1121 // Add the paths for the various language specific isystem flags. 1122 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 1123 ie = Args.filtered_end(); it != ie; ++it) 1124 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 1125 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 1126 ie = Args.filtered_end(); it != ie; ++it) 1127 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 1128 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 1129 ie = Args.filtered_end(); it != ie; ++it) 1130 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 1131 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 1132 ie = Args.filtered_end(); it != ie; ++it) 1133 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 1134 1135 // Add the internal paths from a driver that detects standard include paths. 1136 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 1137 OPT_internal_externc_isystem), 1138 E = Args.filtered_end(); 1139 I != E; ++I) { 1140 frontend::IncludeDirGroup Group = frontend::System; 1141 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 1142 Group = frontend::ExternCSystem; 1143 Opts.AddPath((*I)->getValue(), Group, false, true); 1144 } 1145 1146 // Add the path prefixes which are implicitly treated as being system headers. 1147 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix, 1148 OPT_no_system_header_prefix), 1149 E = Args.filtered_end(); 1150 I != E; ++I) 1151 Opts.AddSystemHeaderPrefix( 1152 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix)); 1153 1154 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay), 1155 E = Args.filtered_end(); I != E; ++I) 1156 Opts.AddVFSOverlayFile((*I)->getValue()); 1157 } 1158 1159 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1160 LangStandard::Kind LangStd) { 1161 // Set some properties which depend solely on the input kind; it would be nice 1162 // to move these to the language standard, and have the driver resolve the 1163 // input kind + language standard. 1164 if (IK == IK_Asm) { 1165 Opts.AsmPreprocessor = 1; 1166 } else if (IK == IK_ObjC || 1167 IK == IK_ObjCXX || 1168 IK == IK_PreprocessedObjC || 1169 IK == IK_PreprocessedObjCXX) { 1170 Opts.ObjC1 = Opts.ObjC2 = 1; 1171 } 1172 1173 if (LangStd == LangStandard::lang_unspecified) { 1174 // Based on the base language, pick one. 1175 switch (IK) { 1176 case IK_None: 1177 case IK_AST: 1178 case IK_LLVM_IR: 1179 llvm_unreachable("Invalid input kind!"); 1180 case IK_OpenCL: 1181 LangStd = LangStandard::lang_opencl; 1182 break; 1183 case IK_CUDA: 1184 LangStd = LangStandard::lang_cuda; 1185 break; 1186 case IK_Asm: 1187 case IK_C: 1188 case IK_PreprocessedC: 1189 case IK_ObjC: 1190 case IK_PreprocessedObjC: 1191 LangStd = LangStandard::lang_gnu11; 1192 break; 1193 case IK_CXX: 1194 case IK_PreprocessedCXX: 1195 case IK_ObjCXX: 1196 case IK_PreprocessedObjCXX: 1197 LangStd = LangStandard::lang_gnucxx98; 1198 break; 1199 } 1200 } 1201 1202 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1203 Opts.LineComment = Std.hasLineComments(); 1204 Opts.C99 = Std.isC99(); 1205 Opts.C11 = Std.isC11(); 1206 Opts.CPlusPlus = Std.isCPlusPlus(); 1207 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1208 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1209 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1210 Opts.Digraphs = Std.hasDigraphs(); 1211 Opts.GNUMode = Std.isGNUMode(); 1212 Opts.GNUInline = !Std.isC99(); 1213 Opts.HexFloats = Std.hasHexFloats(); 1214 Opts.ImplicitInt = Std.hasImplicitInt(); 1215 1216 // Set OpenCL Version. 1217 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1218 if (LangStd == LangStandard::lang_opencl) 1219 Opts.OpenCLVersion = 100; 1220 else if (LangStd == LangStandard::lang_opencl11) 1221 Opts.OpenCLVersion = 110; 1222 else if (LangStd == LangStandard::lang_opencl12) 1223 Opts.OpenCLVersion = 120; 1224 else if (LangStd == LangStandard::lang_opencl20) 1225 Opts.OpenCLVersion = 200; 1226 1227 // OpenCL has some additional defaults. 1228 if (Opts.OpenCL) { 1229 Opts.AltiVec = 0; 1230 Opts.CXXOperatorNames = 1; 1231 Opts.LaxVectorConversions = 0; 1232 Opts.DefaultFPContract = 1; 1233 Opts.NativeHalfType = 1; 1234 } 1235 1236 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA; 1237 1238 // OpenCL and C++ both have bool, true, false keywords. 1239 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1240 1241 // OpenCL has half keyword 1242 Opts.Half = Opts.OpenCL; 1243 1244 // C++ has wchar_t keyword. 1245 Opts.WChar = Opts.CPlusPlus; 1246 1247 Opts.GNUKeywords = Opts.GNUMode; 1248 Opts.CXXOperatorNames = Opts.CPlusPlus; 1249 1250 Opts.DollarIdents = !Opts.AsmPreprocessor; 1251 1252 // C++14 onwards has sized global deallocation functions. 1253 Opts.SizedDeallocation = Opts.CPlusPlus14; 1254 } 1255 1256 /// Attempt to parse a visibility value out of the given argument. 1257 static Visibility parseVisibility(Arg *arg, ArgList &args, 1258 DiagnosticsEngine &diags) { 1259 StringRef value = arg->getValue(); 1260 if (value == "default") { 1261 return DefaultVisibility; 1262 } else if (value == "hidden") { 1263 return HiddenVisibility; 1264 } else if (value == "protected") { 1265 // FIXME: diagnose if target does not support protected visibility 1266 return ProtectedVisibility; 1267 } 1268 1269 diags.Report(diag::err_drv_invalid_value) 1270 << arg->getAsString(args) << value; 1271 return DefaultVisibility; 1272 } 1273 1274 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) { 1275 auto Arg = Args.getLastArg(OPT_fms_compatibility_version); 1276 if (!Arg) 1277 return 0; 1278 1279 // The MSC versioning scheme involves four versioning components: 1280 // - Major 1281 // - Minor 1282 // - Build 1283 // - Patch 1284 // 1285 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value. 1286 // Additionally, the value may be provided in the form of a more readable 1287 // MM.mm.bbbbb.pp version. 1288 // 1289 // Unfortunately, due to the bit-width limitations, we cannot currently encode 1290 // the value for the patch level. 1291 1292 unsigned VC[4] = {0}; 1293 StringRef Value = Arg->getValue(); 1294 SmallVector<StringRef, 4> Components; 1295 1296 Value.split(Components, ".", llvm::array_lengthof(VC)); 1297 for (unsigned CI = 0, 1298 CE = std::min(Components.size(), llvm::array_lengthof(VC)); 1299 CI < CE; ++CI) { 1300 if (Components[CI].getAsInteger(10, VC[CI])) { 1301 Diags.Report(diag::err_drv_invalid_value) 1302 << Arg->getAsString(Args) << Value; 1303 return 0; 1304 } 1305 } 1306 1307 // FIXME we cannot encode the patch level 1308 return VC[0] * 10000000 + VC[1] * 100000 + VC[2]; 1309 } 1310 1311 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1312 DiagnosticsEngine &Diags) { 1313 // FIXME: Cleanup per-file based stuff. 1314 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1315 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1316 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1317 #define LANGSTANDARD(id, name, desc, features) \ 1318 .Case(name, LangStandard::lang_##id) 1319 #include "clang/Frontend/LangStandards.def" 1320 .Default(LangStandard::lang_unspecified); 1321 if (LangStd == LangStandard::lang_unspecified) 1322 Diags.Report(diag::err_drv_invalid_value) 1323 << A->getAsString(Args) << A->getValue(); 1324 else { 1325 // Valid standard, check to make sure language and standard are 1326 // compatible. 1327 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1328 switch (IK) { 1329 case IK_C: 1330 case IK_ObjC: 1331 case IK_PreprocessedC: 1332 case IK_PreprocessedObjC: 1333 if (!(Std.isC89() || Std.isC99())) 1334 Diags.Report(diag::err_drv_argument_not_allowed_with) 1335 << A->getAsString(Args) << "C/ObjC"; 1336 break; 1337 case IK_CXX: 1338 case IK_ObjCXX: 1339 case IK_PreprocessedCXX: 1340 case IK_PreprocessedObjCXX: 1341 if (!Std.isCPlusPlus()) 1342 Diags.Report(diag::err_drv_argument_not_allowed_with) 1343 << A->getAsString(Args) << "C++/ObjC++"; 1344 break; 1345 case IK_OpenCL: 1346 if (!Std.isC99()) 1347 Diags.Report(diag::err_drv_argument_not_allowed_with) 1348 << A->getAsString(Args) << "OpenCL"; 1349 break; 1350 case IK_CUDA: 1351 if (!Std.isCPlusPlus()) 1352 Diags.Report(diag::err_drv_argument_not_allowed_with) 1353 << A->getAsString(Args) << "CUDA"; 1354 break; 1355 default: 1356 break; 1357 } 1358 } 1359 } 1360 1361 // -cl-std only applies for OpenCL language standards. 1362 // Override the -std option in this case. 1363 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1364 LangStandard::Kind OpenCLLangStd 1365 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1366 .Case("CL", LangStandard::lang_opencl) 1367 .Case("CL1.1", LangStandard::lang_opencl11) 1368 .Case("CL1.2", LangStandard::lang_opencl12) 1369 .Case("CL2.0", LangStandard::lang_opencl20) 1370 .Default(LangStandard::lang_unspecified); 1371 1372 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1373 Diags.Report(diag::err_drv_invalid_value) 1374 << A->getAsString(Args) << A->getValue(); 1375 } 1376 else 1377 LangStd = OpenCLLangStd; 1378 } 1379 1380 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1381 1382 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1383 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1384 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1385 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1386 // name, as it doesn't seem a useful distinction. 1387 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1388 Opts.GNUKeywords); 1389 1390 if (Args.hasArg(OPT_fno_operator_names)) 1391 Opts.CXXOperatorNames = 0; 1392 1393 if (Args.hasArg(OPT_fcuda_is_device)) 1394 Opts.CUDAIsDevice = 1; 1395 1396 if (Opts.ObjC1) { 1397 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1398 StringRef value = arg->getValue(); 1399 if (Opts.ObjCRuntime.tryParse(value)) 1400 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1401 } 1402 1403 if (Args.hasArg(OPT_fobjc_gc_only)) 1404 Opts.setGC(LangOptions::GCOnly); 1405 else if (Args.hasArg(OPT_fobjc_gc)) 1406 Opts.setGC(LangOptions::HybridGC); 1407 else if (Args.hasArg(OPT_fobjc_arc)) { 1408 Opts.ObjCAutoRefCount = 1; 1409 if (!Opts.ObjCRuntime.allowsARC()) 1410 Diags.Report(diag::err_arc_unsupported_on_runtime); 1411 1412 // Only set ObjCARCWeak if ARC is enabled. 1413 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1414 Opts.ObjCARCWeak = 1; 1415 else 1416 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1417 } 1418 1419 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1420 Opts.ObjCInferRelatedResultType = 0; 1421 1422 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1423 Opts.ObjCSubscriptingLegacyRuntime = 1424 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1425 } 1426 1427 if (Args.hasArg(OPT_fgnu89_inline)) 1428 Opts.GNUInline = 1; 1429 1430 if (Args.hasArg(OPT_fapple_kext)) { 1431 if (!Opts.CPlusPlus) 1432 Diags.Report(diag::warn_c_kext); 1433 else 1434 Opts.AppleKext = 1; 1435 } 1436 1437 if (Args.hasArg(OPT_print_ivar_layout)) 1438 Opts.ObjCGCBitmapPrint = 1; 1439 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1440 Opts.NoConstantCFStrings = 1; 1441 1442 if (Args.hasArg(OPT_faltivec)) 1443 Opts.AltiVec = 1; 1444 1445 if (Args.hasArg(OPT_pthread)) 1446 Opts.POSIXThreads = 1; 1447 1448 // The value-visibility mode defaults to "default". 1449 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1450 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1451 } else { 1452 Opts.setValueVisibilityMode(DefaultVisibility); 1453 } 1454 1455 // The type-visibility mode defaults to the value-visibility mode. 1456 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1457 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1458 } else { 1459 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1460 } 1461 1462 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1463 Opts.InlineVisibilityHidden = 1; 1464 1465 if (Args.hasArg(OPT_ftrapv)) { 1466 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1467 // Set the handler, if one is specified. 1468 Opts.OverflowHandler = 1469 Args.getLastArgValue(OPT_ftrapv_handler); 1470 } 1471 else if (Args.hasArg(OPT_fwrapv)) 1472 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1473 1474 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1475 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1476 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1477 Opts.MSCompatibilityVersion = parseMSCVersion(Args, Diags); 1478 1479 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1480 // is specified, or -std is set to a conforming mode. 1481 // Trigraphs are disabled by default in c++1z onwards. 1482 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1483 Opts.Trigraphs = 1484 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1485 1486 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1487 OPT_fno_dollars_in_identifiers, 1488 Opts.DollarIdents); 1489 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1490 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1491 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1492 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1493 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1494 Opts.ConstStrings); 1495 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1496 Opts.LaxVectorConversions = 0; 1497 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1498 Opts.ThreadsafeStatics = 0; 1499 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1500 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1501 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1502 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1503 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1504 1505 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1506 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1507 Opts.Blocks = Args.hasArg(OPT_fblocks); 1508 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1509 Opts.Modules = Args.hasArg(OPT_fmodules); 1510 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1511 Opts.ModulesDeclUse = 1512 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1513 Opts.ModulesSearchAll = Opts.Modules && 1514 !Args.hasArg(OPT_fno_modules_search_all) && 1515 Args.hasArg(OPT_fmodules_search_all); 1516 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1517 Opts.ModulesImplicitMaps = Args.hasFlag(OPT_fmodules_implicit_maps, 1518 OPT_fno_modules_implicit_maps, true); 1519 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 1520 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1521 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1522 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1523 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1524 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1525 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1526 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1527 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1528 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation); 1529 Opts.SizedDeallocation &= !Args.hasArg(OPT_fno_sized_deallocation); 1530 Opts.DefineSizedDeallocation = Opts.SizedDeallocation && 1531 Args.hasArg(OPT_fdefine_sized_deallocation); 1532 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1533 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1534 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1535 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1536 Opts.InstantiationDepth = 1537 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1538 Opts.ArrowDepth = 1539 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1540 Opts.ConstexprCallDepth = 1541 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1542 Opts.ConstexprStepLimit = 1543 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1544 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1545 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1546 Opts.NumLargeByValueCopy = 1547 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1548 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1549 Opts.ObjCConstantStringClass = 1550 Args.getLastArgValue(OPT_fconstant_string_class); 1551 Opts.ObjCDefaultSynthProperties = 1552 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1553 Opts.EncodeExtendedBlockSig = 1554 Args.hasArg(OPT_fencode_extended_block_signature); 1555 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1556 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1557 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1558 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1559 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1560 Opts.Static = Args.hasArg(OPT_static_define); 1561 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1562 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1563 || Args.hasArg(OPT_fdump_record_layouts); 1564 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1565 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1566 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1567 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1568 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1569 Opts.MRTD = Args.hasArg(OPT_mrtd); 1570 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1571 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1572 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1573 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1574 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1575 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1576 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1577 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1578 Opts.ImplementationOfModule = 1579 Args.getLastArgValue(OPT_fmodule_implementation_of); 1580 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1581 Opts.NativeHalfType = Opts.NativeHalfType; 1582 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns); 1583 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1584 1585 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1586 Opts.CurrentModule != Opts.ImplementationOfModule) { 1587 Diags.Report(diag::err_conflicting_module_names) 1588 << Opts.CurrentModule << Opts.ImplementationOfModule; 1589 } 1590 1591 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1592 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1593 .Case("target", LangOptions::ASMM_Target) 1594 .Case("no", LangOptions::ASMM_Off) 1595 .Case("yes", LangOptions::ASMM_On) 1596 .Default(255)) { 1597 default: 1598 Diags.Report(diag::err_drv_invalid_value) 1599 << "-faddress-space-map-mangling=" << A->getValue(); 1600 break; 1601 case LangOptions::ASMM_Target: 1602 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1603 break; 1604 case LangOptions::ASMM_On: 1605 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1606 break; 1607 case LangOptions::ASMM_Off: 1608 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1609 break; 1610 } 1611 } 1612 1613 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1614 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1615 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1616 A->getValue()) 1617 .Case("single", 1618 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1619 .Case("multiple", 1620 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1621 .Case("virtual", 1622 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1623 .Default(LangOptions::PPTMK_BestCase); 1624 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1625 Diags.Report(diag::err_drv_invalid_value) 1626 << "-fms-memptr-rep=" << A->getValue(); 1627 1628 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1629 } 1630 1631 // Check if -fopenmp= is specified. 1632 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) { 1633 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue()) 1634 .Case("libiomp5", true) 1635 .Default(false); 1636 } 1637 1638 // Record whether the __DEPRECATED define was requested. 1639 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1640 OPT_fno_deprecated_macro, 1641 Opts.Deprecated); 1642 1643 // FIXME: Eliminate this dependency. 1644 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1645 OptSize = getOptimizationLevelSize(Args); 1646 Opts.Optimize = Opt != 0; 1647 Opts.OptimizeSize = OptSize != 0; 1648 1649 // This is the __NO_INLINE__ define, which just depends on things like the 1650 // optimization level and -fno-inline, not actually whether the backend has 1651 // inlining enabled. 1652 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1653 1654 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 1655 Args.hasArg(OPT_cl_fast_relaxed_math); 1656 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 1657 Args.hasArg(OPT_cl_finite_math_only) || 1658 Args.hasArg(OPT_cl_fast_relaxed_math); 1659 1660 Opts.RetainCommentsFromSystemHeaders = 1661 Args.hasArg(OPT_fretain_comments_from_system_headers); 1662 1663 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1664 switch (SSP) { 1665 default: 1666 Diags.Report(diag::err_drv_invalid_value) 1667 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1668 break; 1669 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1670 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1671 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1672 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1673 } 1674 1675 // Parse -fsanitize= arguments. 1676 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1677 Diags, Opts.Sanitize); 1678 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 1679 Opts.SanitizeAddressFieldPadding = 1680 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 1681 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 1682 } 1683 1684 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1685 FileManager &FileMgr, 1686 DiagnosticsEngine &Diags) { 1687 using namespace options; 1688 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1689 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1690 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1691 Opts.TokenCache = A->getValue(); 1692 else 1693 Opts.TokenCache = Opts.ImplicitPTHInclude; 1694 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1695 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1696 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1697 1698 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1699 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1700 ie = Args.filtered_end(); it != ie; ++it) { 1701 const Arg *A = *it; 1702 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1703 } 1704 1705 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1706 StringRef Value(A->getValue()); 1707 size_t Comma = Value.find(','); 1708 unsigned Bytes = 0; 1709 unsigned EndOfLine = 0; 1710 1711 if (Comma == StringRef::npos || 1712 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1713 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1714 Diags.Report(diag::err_drv_preamble_format); 1715 else { 1716 Opts.PrecompiledPreambleBytes.first = Bytes; 1717 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1718 } 1719 } 1720 1721 // Add macros from the command line. 1722 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1723 ie = Args.filtered_end(); it != ie; ++it) { 1724 if ((*it)->getOption().matches(OPT_D)) 1725 Opts.addMacroDef((*it)->getValue()); 1726 else 1727 Opts.addMacroUndef((*it)->getValue()); 1728 } 1729 1730 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1731 1732 // Add the ordered list of -includes. 1733 for (arg_iterator it = Args.filtered_begin(OPT_include), 1734 ie = Args.filtered_end(); it != ie; ++it) { 1735 const Arg *A = *it; 1736 Opts.Includes.push_back(A->getValue()); 1737 } 1738 1739 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1740 ie = Args.filtered_end(); it != ie; ++it) { 1741 const Arg *A = *it; 1742 Opts.ChainedIncludes.push_back(A->getValue()); 1743 } 1744 1745 // Include 'altivec.h' if -faltivec option present 1746 if (Args.hasArg(OPT_faltivec)) 1747 Opts.Includes.push_back("altivec.h"); 1748 1749 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1750 ie = Args.filtered_end(); it != ie; ++it) { 1751 const Arg *A = *it; 1752 std::pair<StringRef,StringRef> Split = 1753 StringRef(A->getValue()).split(';'); 1754 1755 if (Split.second.empty()) { 1756 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1757 continue; 1758 } 1759 1760 Opts.addRemappedFile(Split.first, Split.second); 1761 } 1762 1763 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1764 StringRef Name = A->getValue(); 1765 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1766 .Case("libc++", ARCXX_libcxx) 1767 .Case("libstdc++", ARCXX_libstdcxx) 1768 .Case("none", ARCXX_nolib) 1769 .Default(~0U); 1770 if (Library == ~0U) 1771 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1772 else 1773 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1774 } 1775 } 1776 1777 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1778 ArgList &Args, 1779 frontend::ActionKind Action) { 1780 using namespace options; 1781 1782 switch (Action) { 1783 case frontend::ASTDeclList: 1784 case frontend::ASTDump: 1785 case frontend::ASTPrint: 1786 case frontend::ASTView: 1787 case frontend::EmitAssembly: 1788 case frontend::EmitBC: 1789 case frontend::EmitHTML: 1790 case frontend::EmitLLVM: 1791 case frontend::EmitLLVMOnly: 1792 case frontend::EmitCodeGenOnly: 1793 case frontend::EmitObj: 1794 case frontend::FixIt: 1795 case frontend::GenerateModule: 1796 case frontend::GeneratePCH: 1797 case frontend::GeneratePTH: 1798 case frontend::ParseSyntaxOnly: 1799 case frontend::ModuleFileInfo: 1800 case frontend::VerifyPCH: 1801 case frontend::PluginAction: 1802 case frontend::PrintDeclContext: 1803 case frontend::RewriteObjC: 1804 case frontend::RewriteTest: 1805 case frontend::RunAnalysis: 1806 case frontend::MigrateSource: 1807 Opts.ShowCPP = 0; 1808 break; 1809 1810 case frontend::DumpRawTokens: 1811 case frontend::DumpTokens: 1812 case frontend::InitOnly: 1813 case frontend::PrintPreamble: 1814 case frontend::PrintPreprocessedInput: 1815 case frontend::RewriteMacros: 1816 case frontend::RunPreprocessorOnly: 1817 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1818 break; 1819 } 1820 1821 Opts.ShowComments = Args.hasArg(OPT_C); 1822 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1823 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1824 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1825 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1826 } 1827 1828 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1829 using namespace options; 1830 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1831 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1832 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1833 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1834 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1835 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1836 1837 // Use the default target triple if unspecified. 1838 if (Opts.Triple.empty()) 1839 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1840 } 1841 1842 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1843 const char *const *ArgBegin, 1844 const char *const *ArgEnd, 1845 DiagnosticsEngine &Diags) { 1846 bool Success = true; 1847 1848 // Parse the arguments. 1849 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1850 const unsigned IncludedFlagsBitmask = options::CC1Option; 1851 unsigned MissingArgIndex, MissingArgCount; 1852 std::unique_ptr<InputArgList> Args( 1853 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount, 1854 IncludedFlagsBitmask)); 1855 1856 // Check for missing argument error. 1857 if (MissingArgCount) { 1858 Diags.Report(diag::err_drv_missing_argument) 1859 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1860 Success = false; 1861 } 1862 1863 // Issue errors on unknown arguments. 1864 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1865 ie = Args->filtered_end(); it != ie; ++it) { 1866 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1867 Success = false; 1868 } 1869 1870 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1871 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1872 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1873 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1874 && Success; 1875 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1876 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1877 // FIXME: We shouldn't have to pass the DashX option around here 1878 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1879 ParseTargetArgs(Res.getTargetOpts(), *Args); 1880 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags, 1881 Res.getTargetOpts()) && Success; 1882 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1883 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1884 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1885 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1886 Res.getLangOpts()->ObjCExceptions = 1; 1887 } 1888 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1889 // PCH file and find the original header name. Remove the need to do that in 1890 // ParsePreprocessorArgs and remove the FileManager 1891 // parameters from the function and the "FileManager.h" #include. 1892 FileManager FileMgr(Res.getFileSystemOpts()); 1893 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1894 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1895 Res.getFrontendOpts().ProgramAction); 1896 return Success; 1897 } 1898 1899 namespace { 1900 1901 class ModuleSignature { 1902 SmallVector<uint64_t, 16> Data; 1903 unsigned CurBit; 1904 uint64_t CurValue; 1905 1906 public: 1907 ModuleSignature() : CurBit(0), CurValue(0) { } 1908 1909 void add(uint64_t Value, unsigned Bits); 1910 void add(StringRef Value); 1911 void flush(); 1912 1913 llvm::APInt getAsInteger() const; 1914 }; 1915 } 1916 1917 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1918 CurValue |= Value << CurBit; 1919 if (CurBit + NumBits < 64) { 1920 CurBit += NumBits; 1921 return; 1922 } 1923 1924 // Add the current word. 1925 Data.push_back(CurValue); 1926 1927 if (CurBit) 1928 CurValue = Value >> (64-CurBit); 1929 else 1930 CurValue = 0; 1931 CurBit = (CurBit+NumBits) & 63; 1932 } 1933 1934 void ModuleSignature::flush() { 1935 if (CurBit == 0) 1936 return; 1937 1938 Data.push_back(CurValue); 1939 CurBit = 0; 1940 CurValue = 0; 1941 } 1942 1943 void ModuleSignature::add(StringRef Value) { 1944 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1945 add(*I, 8); 1946 } 1947 1948 llvm::APInt ModuleSignature::getAsInteger() const { 1949 return llvm::APInt(Data.size() * 64, Data); 1950 } 1951 1952 std::string CompilerInvocation::getModuleHash() const { 1953 // Note: For QoI reasons, the things we use as a hash here should all be 1954 // dumped via the -module-info flag. 1955 using llvm::hash_code; 1956 using llvm::hash_value; 1957 using llvm::hash_combine; 1958 1959 // Start the signature with the compiler version. 1960 // FIXME: We'd rather use something more cryptographically sound than 1961 // CityHash, but this will do for now. 1962 hash_code code = hash_value(getClangFullRepositoryVersion()); 1963 1964 // Extend the signature with the language options 1965 #define LANGOPT(Name, Bits, Default, Description) \ 1966 code = hash_combine(code, LangOpts->Name); 1967 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1968 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1969 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1970 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1971 #include "clang/Basic/LangOptions.def" 1972 1973 // Extend the signature with the target options. 1974 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1975 TargetOpts->ABI); 1976 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1977 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1978 1979 // Extend the signature with preprocessor options. 1980 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1981 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1982 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1983 1984 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1985 I = getPreprocessorOpts().Macros.begin(), 1986 IEnd = getPreprocessorOpts().Macros.end(); 1987 I != IEnd; ++I) { 1988 // If we're supposed to ignore this macro for the purposes of modules, 1989 // don't put it into the hash. 1990 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1991 // Check whether we're ignoring this macro. 1992 StringRef MacroDef = I->first; 1993 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1994 continue; 1995 } 1996 1997 code = hash_combine(code, I->first, I->second); 1998 } 1999 2000 // Extend the signature with the sysroot. 2001 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 2002 hsOpts.UseStandardSystemIncludes, 2003 hsOpts.UseStandardCXXIncludes, 2004 hsOpts.UseLibcxx); 2005 code = hash_combine(code, hsOpts.ResourceDir); 2006 2007 // Extend the signature with the user build path. 2008 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2009 2010 // Darwin-specific hack: if we have a sysroot, use the contents and 2011 // modification time of 2012 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2013 // as part of the module hash. 2014 if (!hsOpts.Sysroot.empty()) { 2015 SmallString<128> systemVersionFile; 2016 systemVersionFile += hsOpts.Sysroot; 2017 llvm::sys::path::append(systemVersionFile, "System"); 2018 llvm::sys::path::append(systemVersionFile, "Library"); 2019 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2020 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2021 2022 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2023 llvm::MemoryBuffer::getFile(systemVersionFile.str()); 2024 if (buffer) { 2025 code = hash_combine(code, buffer.get()->getBuffer()); 2026 2027 struct stat statBuf; 2028 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2029 code = hash_combine(code, statBuf.st_mtime); 2030 } 2031 } 2032 2033 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2034 } 2035 2036 namespace clang { 2037 2038 template<typename IntTy> 2039 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2040 IntTy Default, 2041 DiagnosticsEngine *Diags) { 2042 IntTy Res = Default; 2043 if (Arg *A = Args.getLastArg(Id)) { 2044 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2045 if (Diags) 2046 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2047 << A->getValue(); 2048 } 2049 } 2050 return Res; 2051 } 2052 2053 2054 // Declared in clang/Frontend/Utils.h. 2055 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2056 DiagnosticsEngine *Diags) { 2057 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2058 } 2059 2060 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2061 uint64_t Default, 2062 DiagnosticsEngine *Diags) { 2063 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2064 } 2065 2066 void BuryPointer(const void *Ptr) { 2067 // This function may be called only a small fixed amount of times per each 2068 // invocation, otherwise we do actually have a leak which we want to report. 2069 // If this function is called more than kGraveYardMaxSize times, the pointers 2070 // will not be properly buried and a leak detector will report a leak, which 2071 // is what we want in such case. 2072 static const size_t kGraveYardMaxSize = 16; 2073 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2074 static std::atomic<unsigned> GraveYardSize; 2075 unsigned Idx = GraveYardSize++; 2076 if (Idx >= kGraveYardMaxSize) 2077 return; 2078 GraveYard[Idx] = Ptr; 2079 } 2080 2081 IntrusiveRefCntPtr<vfs::FileSystem> 2082 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2083 DiagnosticsEngine &Diags) { 2084 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2085 return vfs::getRealFileSystem(); 2086 2087 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2088 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2089 // earlier vfs files are on the bottom 2090 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2091 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2092 llvm::MemoryBuffer::getFile(File); 2093 if (!Buffer) { 2094 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2095 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2096 } 2097 2098 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2099 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr); 2100 if (!FS.get()) { 2101 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2102 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2103 } 2104 Overlay->pushOverlay(FS); 2105 } 2106 return Overlay; 2107 } 2108 } // end namespace clang 2109