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