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.emplace_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 (const Arg *A : 243 Args.filtered(OPT_analyzer_checker, OPT_analyzer_disable_checker)) { 244 A->claim(); 245 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 246 // We can have a list of comma separated checker names, e.g: 247 // '-analyzer-checker=cocoa,unix' 248 StringRef checkerList = A->getValue(); 249 SmallVector<StringRef, 4> checkers; 250 checkerList.split(checkers, ","); 251 for (StringRef checker : checkers) 252 Opts.CheckersControlList.emplace_back(checker, enable); 253 } 254 255 // Go through the analyzer configuration options. 256 for (const Arg *A : Args.filtered(OPT_analyzer_config)) { 257 A->claim(); 258 // We can have a list of comma separated config names, e.g: 259 // '-analyzer-config key1=val1,key2=val2' 260 StringRef configList = A->getValue(); 261 SmallVector<StringRef, 4> configVals; 262 configList.split(configVals, ","); 263 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 264 StringRef key, val; 265 std::tie(key, val) = configVals[i].split("="); 266 if (val.empty()) { 267 Diags.Report(SourceLocation(), 268 diag::err_analyzer_config_no_value) << configVals[i]; 269 Success = false; 270 break; 271 } 272 if (val.find('=') != StringRef::npos) { 273 Diags.Report(SourceLocation(), 274 diag::err_analyzer_config_multiple_values) 275 << configVals[i]; 276 Success = false; 277 break; 278 } 279 Opts.Config[key] = val; 280 } 281 } 282 283 return Success; 284 } 285 286 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 287 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 288 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 289 return true; 290 } 291 292 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 293 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 294 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 295 } 296 297 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 298 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 299 StringRef Value = A->getValue(); 300 if (Value == "small" || Value == "kernel" || Value == "medium" || 301 Value == "large") 302 return Value; 303 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 304 } 305 return "default"; 306 } 307 308 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 309 /// It returns a pointer to the newly generated Regex instance. 310 static std::shared_ptr<llvm::Regex> 311 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 312 Arg *RpassArg) { 313 StringRef Val = RpassArg->getValue(); 314 std::string RegexError; 315 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 316 if (!Pattern->isValid(RegexError)) { 317 Diags.Report(diag::err_drv_optimization_remark_pattern) 318 << RegexError << RpassArg->getAsString(Args); 319 Pattern.reset(); 320 } 321 return Pattern; 322 } 323 324 static bool parseDiagnosticLevelMask(StringRef FlagName, 325 const std::vector<std::string> &Levels, 326 DiagnosticsEngine *Diags, 327 DiagnosticLevelMask &M) { 328 bool Success = true; 329 for (const auto &Level : Levels) { 330 DiagnosticLevelMask const PM = 331 llvm::StringSwitch<DiagnosticLevelMask>(Level) 332 .Case("note", DiagnosticLevelMask::Note) 333 .Case("remark", DiagnosticLevelMask::Remark) 334 .Case("warning", DiagnosticLevelMask::Warning) 335 .Case("error", DiagnosticLevelMask::Error) 336 .Default(DiagnosticLevelMask::None); 337 if (PM == DiagnosticLevelMask::None) { 338 Success = false; 339 if (Diags) 340 Diags->Report(diag::err_drv_invalid_value) << FlagName << Level; 341 } 342 M = M | PM; 343 } 344 return Success; 345 } 346 347 static void parseSanitizerKinds(StringRef FlagName, 348 const std::vector<std::string> &Sanitizers, 349 DiagnosticsEngine &Diags, SanitizerSet &S) { 350 for (const auto &Sanitizer : Sanitizers) { 351 SanitizerMask K = parseSanitizerValue(Sanitizer, /*AllowGroups=*/false); 352 if (K == 0) 353 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer; 354 else 355 S.set(K, true); 356 } 357 } 358 359 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 360 DiagnosticsEngine &Diags, 361 const TargetOptions &TargetOpts) { 362 using namespace options; 363 bool Success = true; 364 365 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 366 // TODO: This could be done in Driver 367 unsigned MaxOptLevel = 3; 368 if (OptimizationLevel > MaxOptLevel) { 369 // If the optimization level is not supported, fall back on the default 370 // optimization 371 Diags.Report(diag::warn_drv_optimization_value) 372 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 373 OptimizationLevel = MaxOptLevel; 374 } 375 Opts.OptimizationLevel = OptimizationLevel; 376 377 // We must always run at least the always inlining pass. 378 Opts.setInlining( 379 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 380 : CodeGenOptions::OnlyAlwaysInlining); 381 // -fno-inline-functions overrides OptimizationLevel > 1. 382 Opts.NoInline = Args.hasArg(OPT_fno_inline); 383 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 384 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 385 386 if (Arg *A = Args.getLastArg(OPT_fveclib)) { 387 StringRef Name = A->getValue(); 388 if (Name == "Accelerate") 389 Opts.setVecLib(CodeGenOptions::Accelerate); 390 else if (Name == "none") 391 Opts.setVecLib(CodeGenOptions::NoLibrary); 392 else 393 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 394 } 395 396 if (Args.hasArg(OPT_gline_tables_only)) { 397 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 398 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) || 399 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) { 400 bool Default = false; 401 // Until dtrace (via CTF) and LLDB can deal with distributed debug info, 402 // Darwin and FreeBSD default to standalone/full debug info. 403 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() || 404 llvm::Triple(TargetOpts.Triple).isOSFreeBSD()) 405 Default = true; 406 407 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default)) 408 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 409 else 410 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 411 } 412 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 413 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 414 if (Args.hasArg(OPT_gdwarf_2)) 415 Opts.DwarfVersion = 2; 416 else if (Args.hasArg(OPT_gdwarf_3)) 417 Opts.DwarfVersion = 3; 418 else if (Args.hasArg(OPT_gdwarf_4)) 419 Opts.DwarfVersion = 4; 420 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo) 421 // Default Dwarf version is 4 if we are generating debug information. 422 Opts.DwarfVersion = 4; 423 424 if (const Arg *A = 425 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists)) 426 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists; 427 428 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 429 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 430 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 431 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 432 OPT_fuse_register_sized_bitfield_access); 433 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 434 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 435 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 436 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 437 Opts.NoCommon = Args.hasArg(OPT_fno_common); 438 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 439 Opts.OptimizeSize = getOptimizationLevelSize(Args); 440 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 441 Args.hasArg(OPT_ffreestanding)); 442 Opts.UnrollLoops = 443 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 444 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 445 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 446 447 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 448 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 449 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 450 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate) || 451 Args.hasArg(OPT_fprofile_instr_generate_EQ); 452 Opts.InstrProfileOutput = Args.getLastArgValue(OPT_fprofile_instr_generate_EQ); 453 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); 454 Opts.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping); 455 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 456 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 457 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 458 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 459 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 460 Opts.CodeModel = getCodeModel(Args, Diags); 461 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 462 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 463 Opts.DisableFree = Args.hasArg(OPT_disable_free); 464 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 465 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 466 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 467 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 468 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 469 Args.hasArg(OPT_cl_finite_math_only) || 470 Args.hasArg(OPT_cl_fast_relaxed_math)); 471 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 472 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 473 Args.hasArg(OPT_cl_finite_math_only) || 474 Args.hasArg(OPT_cl_fast_relaxed_math)); 475 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros); 476 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math); 477 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 478 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 479 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 480 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 481 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 482 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 483 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 484 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 485 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 486 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 487 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 488 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 489 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 490 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 491 Args.hasArg(OPT_cl_fast_relaxed_math); 492 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 493 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 494 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix"); 495 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single") 496 Diags.Report(diag::err_drv_invalid_value) 497 << Args.getLastArg(OPT_mthread_model)->getAsString(Args) 498 << Opts.ThreadModel; 499 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 500 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 501 502 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 503 OPT_fno_function_sections, false); 504 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 505 OPT_fno_data_sections, false); 506 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names, 507 OPT_fno_unique_section_names, true); 508 509 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions); 510 511 Opts.PrepareForLTO = Args.hasArg(OPT_flto); 512 513 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile); 514 515 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 516 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 517 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 518 519 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 520 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 521 522 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 523 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 524 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 525 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 526 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 527 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 528 Opts.CoverageNoFunctionNamesInData = 529 Args.hasArg(OPT_coverage_no_function_names_in_data); 530 Opts.CoverageExitBlockBeforeBody = 531 Args.hasArg(OPT_coverage_exit_block_before_body); 532 if (Args.hasArg(OPT_coverage_version_EQ)) { 533 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 534 if (CoverageVersion.size() != 4) { 535 Diags.Report(diag::err_drv_invalid_value) 536 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 537 << CoverageVersion; 538 } else { 539 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 540 } 541 } 542 } 543 544 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 545 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 546 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 547 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 548 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 549 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 550 Opts.SanitizeCoverageType = 551 getLastArgIntValue(Args, OPT_fsanitize_coverage_type, 0, Diags); 552 Opts.SanitizeCoverageIndirectCalls = 553 Args.hasArg(OPT_fsanitize_coverage_indirect_calls); 554 Opts.SanitizeCoverageTraceBB = Args.hasArg(OPT_fsanitize_coverage_trace_bb); 555 Opts.SanitizeCoverageTraceCmp = Args.hasArg(OPT_fsanitize_coverage_trace_cmp); 556 Opts.SanitizeCoverage8bitCounters = 557 Args.hasArg(OPT_fsanitize_coverage_8bit_counters); 558 Opts.SanitizeMemoryTrackOrigins = 559 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 560 Opts.SSPBufferSize = 561 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 562 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 563 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 564 StringRef Val = A->getValue(); 565 unsigned StackAlignment = Opts.StackAlignment; 566 Val.getAsInteger(10, StackAlignment); 567 Opts.StackAlignment = StackAlignment; 568 } 569 570 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) { 571 StringRef Val = A->getValue(); 572 unsigned StackProbeSize = Opts.StackProbeSize; 573 Val.getAsInteger(0, StackProbeSize); 574 Opts.StackProbeSize = StackProbeSize; 575 } 576 577 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 578 StringRef Name = A->getValue(); 579 unsigned Method = llvm::StringSwitch<unsigned>(Name) 580 .Case("legacy", CodeGenOptions::Legacy) 581 .Case("non-legacy", CodeGenOptions::NonLegacy) 582 .Case("mixed", CodeGenOptions::Mixed) 583 .Default(~0U); 584 if (Method == ~0U) { 585 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 586 Success = false; 587 } else { 588 Opts.setObjCDispatchMethod( 589 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 590 } 591 } 592 593 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 594 StringRef Name = A->getValue(); 595 unsigned Model = llvm::StringSwitch<unsigned>(Name) 596 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 597 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 598 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 599 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 600 .Default(~0U); 601 if (Model == ~0U) { 602 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 603 Success = false; 604 } else { 605 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 606 } 607 } 608 609 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 610 StringRef Val = A->getValue(); 611 if (Val == "fast") 612 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 613 else if (Val == "on") 614 Opts.setFPContractMode(CodeGenOptions::FPC_On); 615 else if (Val == "off") 616 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 617 else 618 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 619 } 620 621 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 622 if (A->getOption().matches(OPT_fpcc_struct_return)) { 623 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 624 } else { 625 assert(A->getOption().matches(OPT_freg_struct_return)); 626 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 627 } 628 } 629 630 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 631 bool NeedLocTracking = false; 632 633 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 634 Opts.OptimizationRemarkPattern = 635 GenerateOptimizationRemarkRegex(Diags, Args, A); 636 NeedLocTracking = true; 637 } 638 639 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 640 Opts.OptimizationRemarkMissedPattern = 641 GenerateOptimizationRemarkRegex(Diags, Args, A); 642 NeedLocTracking = true; 643 } 644 645 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 646 Opts.OptimizationRemarkAnalysisPattern = 647 GenerateOptimizationRemarkRegex(Diags, Args, A); 648 NeedLocTracking = true; 649 } 650 651 // If the user requested to use a sample profile for PGO, then the 652 // backend will need to track source location information so the profile 653 // can be incorporated into the IR. 654 if (!Opts.SampleProfileFile.empty()) 655 NeedLocTracking = true; 656 657 // If the user requested a flag that requires source locations available in 658 // the backend, make sure that the backend tracks source location information. 659 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 660 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 661 662 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file); 663 664 // Parse -fsanitize-recover= arguments. 665 // FIXME: Report unrecoverable sanitizers incorrectly specified here. 666 parseSanitizerKinds("-fsanitize-recover=", 667 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags, 668 Opts.SanitizeRecover); 669 parseSanitizerKinds("-fsanitize-trap=", 670 Args.getAllArgValues(OPT_fsanitize_trap_EQ), Diags, 671 Opts.SanitizeTrap); 672 673 Opts.CudaGpuBinaryFileNames = 674 Args.getAllArgValues(OPT_fcuda_include_gpubinary); 675 676 return Success; 677 } 678 679 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 680 ArgList &Args) { 681 using namespace options; 682 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 683 Opts.Targets = Args.getAllArgValues(OPT_MT); 684 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 685 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 686 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 687 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 688 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 689 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 690 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 691 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 692 Opts.ModuleDependencyOutputDir = 693 Args.getLastArgValue(OPT_module_dependency_dir); 694 if (Args.hasArg(OPT_MV)) 695 Opts.OutputFormat = DependencyOutputFormat::NMake; 696 } 697 698 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 699 DiagnosticsEngine *Diags) { 700 using namespace options; 701 bool Success = true; 702 703 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 704 if (Arg *A = 705 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags)) 706 Opts.DiagnosticSerializationFile = A->getValue(); 707 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 708 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 709 Opts.Pedantic = Args.hasArg(OPT_pedantic); 710 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 711 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 712 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 713 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 714 OPT_fno_show_column, 715 /*Default=*/true); 716 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 717 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 718 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 719 720 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 721 722 // Default behavior is to not to show note include stacks. 723 Opts.ShowNoteIncludeStack = false; 724 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 725 OPT_fno_diagnostics_show_note_include_stack)) 726 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 727 Opts.ShowNoteIncludeStack = true; 728 729 StringRef ShowOverloads = 730 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 731 if (ShowOverloads == "best") 732 Opts.setShowOverloads(Ovl_Best); 733 else if (ShowOverloads == "all") 734 Opts.setShowOverloads(Ovl_All); 735 else { 736 Success = false; 737 if (Diags) 738 Diags->Report(diag::err_drv_invalid_value) 739 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 740 << ShowOverloads; 741 } 742 743 StringRef ShowCategory = 744 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 745 if (ShowCategory == "none") 746 Opts.ShowCategories = 0; 747 else if (ShowCategory == "id") 748 Opts.ShowCategories = 1; 749 else if (ShowCategory == "name") 750 Opts.ShowCategories = 2; 751 else { 752 Success = false; 753 if (Diags) 754 Diags->Report(diag::err_drv_invalid_value) 755 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 756 << ShowCategory; 757 } 758 759 StringRef Format = 760 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 761 if (Format == "clang") 762 Opts.setFormat(DiagnosticOptions::Clang); 763 else if (Format == "msvc") 764 Opts.setFormat(DiagnosticOptions::MSVC); 765 else if (Format == "msvc-fallback") { 766 Opts.setFormat(DiagnosticOptions::MSVC); 767 Opts.CLFallbackMode = true; 768 } else if (Format == "vi") 769 Opts.setFormat(DiagnosticOptions::Vi); 770 else { 771 Success = false; 772 if (Diags) 773 Diags->Report(diag::err_drv_invalid_value) 774 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 775 << Format; 776 } 777 778 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 779 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 780 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 781 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 782 DiagnosticLevelMask DiagMask = DiagnosticLevelMask::None; 783 Success &= parseDiagnosticLevelMask("-verify-ignore-unexpected=", 784 Args.getAllArgValues(OPT_verify_ignore_unexpected_EQ), 785 Diags, DiagMask); 786 if (Args.hasArg(OPT_verify_ignore_unexpected)) 787 DiagMask = DiagnosticLevelMask::All; 788 Opts.setVerifyIgnoreUnexpected(DiagMask); 789 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 790 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 791 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 792 Opts.MacroBacktraceLimit = 793 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 794 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 795 Opts.TemplateBacktraceLimit = getLastArgIntValue( 796 Args, OPT_ftemplate_backtrace_limit, 797 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 798 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 799 Args, OPT_fconstexpr_backtrace_limit, 800 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 801 Opts.SpellCheckingLimit = getLastArgIntValue( 802 Args, OPT_fspell_checking_limit, 803 DiagnosticOptions::DefaultSpellCheckingLimit, Diags); 804 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 805 DiagnosticOptions::DefaultTabStop, Diags); 806 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 807 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 808 if (Diags) 809 Diags->Report(diag::warn_ignoring_ftabstop_value) 810 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 811 } 812 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 813 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 814 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 815 816 return Success; 817 } 818 819 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 820 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 821 } 822 823 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 824 DiagnosticsEngine &Diags) { 825 using namespace options; 826 Opts.ProgramAction = frontend::ParseSyntaxOnly; 827 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 828 switch (A->getOption().getID()) { 829 default: 830 llvm_unreachable("Invalid option in group!"); 831 case OPT_ast_list: 832 Opts.ProgramAction = frontend::ASTDeclList; break; 833 case OPT_ast_dump: 834 case OPT_ast_dump_lookups: 835 Opts.ProgramAction = frontend::ASTDump; break; 836 case OPT_ast_print: 837 Opts.ProgramAction = frontend::ASTPrint; break; 838 case OPT_ast_view: 839 Opts.ProgramAction = frontend::ASTView; break; 840 case OPT_dump_raw_tokens: 841 Opts.ProgramAction = frontend::DumpRawTokens; break; 842 case OPT_dump_tokens: 843 Opts.ProgramAction = frontend::DumpTokens; break; 844 case OPT_S: 845 Opts.ProgramAction = frontend::EmitAssembly; break; 846 case OPT_emit_llvm_bc: 847 Opts.ProgramAction = frontend::EmitBC; break; 848 case OPT_emit_html: 849 Opts.ProgramAction = frontend::EmitHTML; break; 850 case OPT_emit_llvm: 851 Opts.ProgramAction = frontend::EmitLLVM; break; 852 case OPT_emit_llvm_only: 853 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 854 case OPT_emit_codegen_only: 855 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 856 case OPT_emit_obj: 857 Opts.ProgramAction = frontend::EmitObj; break; 858 case OPT_fixit_EQ: 859 Opts.FixItSuffix = A->getValue(); 860 // fall-through! 861 case OPT_fixit: 862 Opts.ProgramAction = frontend::FixIt; break; 863 case OPT_emit_module: 864 Opts.ProgramAction = frontend::GenerateModule; break; 865 case OPT_emit_pch: 866 Opts.ProgramAction = frontend::GeneratePCH; break; 867 case OPT_emit_pth: 868 Opts.ProgramAction = frontend::GeneratePTH; break; 869 case OPT_init_only: 870 Opts.ProgramAction = frontend::InitOnly; break; 871 case OPT_fsyntax_only: 872 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 873 case OPT_module_file_info: 874 Opts.ProgramAction = frontend::ModuleFileInfo; break; 875 case OPT_verify_pch: 876 Opts.ProgramAction = frontend::VerifyPCH; break; 877 case OPT_print_decl_contexts: 878 Opts.ProgramAction = frontend::PrintDeclContext; break; 879 case OPT_print_preamble: 880 Opts.ProgramAction = frontend::PrintPreamble; break; 881 case OPT_E: 882 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 883 case OPT_rewrite_macros: 884 Opts.ProgramAction = frontend::RewriteMacros; break; 885 case OPT_rewrite_objc: 886 Opts.ProgramAction = frontend::RewriteObjC; break; 887 case OPT_rewrite_test: 888 Opts.ProgramAction = frontend::RewriteTest; break; 889 case OPT_analyze: 890 Opts.ProgramAction = frontend::RunAnalysis; break; 891 case OPT_migrate: 892 Opts.ProgramAction = frontend::MigrateSource; break; 893 case OPT_Eonly: 894 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 895 } 896 } 897 898 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 899 Opts.Plugins.emplace_back(A->getValue(0)); 900 Opts.ProgramAction = frontend::PluginAction; 901 Opts.ActionName = A->getValue(); 902 903 for (const Arg *AA : Args.filtered(OPT_plugin_arg)) 904 if (AA->getValue(0) == Opts.ActionName) 905 Opts.PluginArgs.emplace_back(AA->getValue(1)); 906 } 907 908 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 909 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 910 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) 911 for (const Arg *A : Args.filtered(OPT_plugin_arg)) 912 if (A->getValue(0) == Opts.AddPluginActions[i]) 913 Opts.AddPluginArgs[i].emplace_back(A->getValue(1)); 914 915 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 916 Opts.CodeCompletionAt = 917 ParsedSourceLocation::FromString(A->getValue()); 918 if (Opts.CodeCompletionAt.FileName.empty()) 919 Diags.Report(diag::err_drv_invalid_value) 920 << A->getAsString(Args) << A->getValue(); 921 } 922 Opts.DisableFree = Args.hasArg(OPT_disable_free); 923 924 Opts.OutputFile = Args.getLastArgValue(OPT_o); 925 Opts.Plugins = Args.getAllArgValues(OPT_load); 926 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 927 Opts.ShowHelp = Args.hasArg(OPT_help); 928 Opts.ShowStats = Args.hasArg(OPT_print_stats); 929 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 930 Opts.ShowVersion = Args.hasArg(OPT_version); 931 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 932 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 933 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 934 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 935 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 936 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 937 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 938 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 939 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 940 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 941 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 942 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file); 943 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file); 944 945 Opts.CodeCompleteOpts.IncludeMacros 946 = Args.hasArg(OPT_code_completion_macros); 947 Opts.CodeCompleteOpts.IncludeCodePatterns 948 = Args.hasArg(OPT_code_completion_patterns); 949 Opts.CodeCompleteOpts.IncludeGlobals 950 = !Args.hasArg(OPT_no_code_completion_globals); 951 Opts.CodeCompleteOpts.IncludeBriefComments 952 = Args.hasArg(OPT_code_completion_brief_comments); 953 954 Opts.OverrideRecordLayoutsFile 955 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 956 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 957 OPT_arcmt_modify, 958 OPT_arcmt_migrate)) { 959 switch (A->getOption().getID()) { 960 default: 961 llvm_unreachable("missed a case"); 962 case OPT_arcmt_check: 963 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 964 break; 965 case OPT_arcmt_modify: 966 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 967 break; 968 case OPT_arcmt_migrate: 969 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 970 break; 971 } 972 } 973 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 974 Opts.ARCMTMigrateReportOut 975 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 976 Opts.ARCMTMigrateEmitARCErrors 977 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 978 979 if (Args.hasArg(OPT_objcmt_migrate_literals)) 980 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 981 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 982 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 983 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax)) 984 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax; 985 if (Args.hasArg(OPT_objcmt_migrate_property)) 986 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 987 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 988 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 989 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 990 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 991 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 992 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 993 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 994 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 995 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 996 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 997 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 998 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 999 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 1000 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 1001 if (Args.hasArg(OPT_objcmt_atomic_property)) 1002 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 1003 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 1004 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 1005 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 1006 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 1007 if (Args.hasArg(OPT_objcmt_migrate_all)) 1008 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 1009 1010 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 1011 1012 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 1013 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 1014 Diags.Report(diag::err_drv_argument_not_allowed_with) 1015 << "ARC migration" << "ObjC migration"; 1016 } 1017 1018 InputKind DashX = IK_None; 1019 if (const Arg *A = Args.getLastArg(OPT_x)) { 1020 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 1021 .Case("c", IK_C) 1022 .Case("cl", IK_OpenCL) 1023 .Case("cuda", IK_CUDA) 1024 .Case("c++", IK_CXX) 1025 .Case("objective-c", IK_ObjC) 1026 .Case("objective-c++", IK_ObjCXX) 1027 .Case("cpp-output", IK_PreprocessedC) 1028 .Case("assembler-with-cpp", IK_Asm) 1029 .Case("c++-cpp-output", IK_PreprocessedCXX) 1030 .Case("cuda-cpp-output", IK_PreprocessedCuda) 1031 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 1032 .Case("objc-cpp-output", IK_PreprocessedObjC) 1033 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 1034 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 1035 .Case("c-header", IK_C) 1036 .Case("cl-header", IK_OpenCL) 1037 .Case("objective-c-header", IK_ObjC) 1038 .Case("c++-header", IK_CXX) 1039 .Case("objective-c++-header", IK_ObjCXX) 1040 .Cases("ast", "pcm", IK_AST) 1041 .Case("ir", IK_LLVM_IR) 1042 .Default(IK_None); 1043 if (DashX == IK_None) 1044 Diags.Report(diag::err_drv_invalid_value) 1045 << A->getAsString(Args) << A->getValue(); 1046 } 1047 1048 // '-' is the default input if none is given. 1049 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 1050 Opts.Inputs.clear(); 1051 if (Inputs.empty()) 1052 Inputs.push_back("-"); 1053 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 1054 InputKind IK = DashX; 1055 if (IK == IK_None) { 1056 IK = FrontendOptions::getInputKindForExtension( 1057 StringRef(Inputs[i]).rsplit('.').second); 1058 // FIXME: Remove this hack. 1059 if (i == 0) 1060 DashX = IK; 1061 } 1062 Opts.Inputs.emplace_back(std::move(Inputs[i]), IK); 1063 } 1064 1065 return DashX; 1066 } 1067 1068 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 1069 void *MainAddr) { 1070 std::string ClangExecutable = 1071 llvm::sys::fs::getMainExecutable(Argv0, MainAddr); 1072 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable); 1073 1074 // Compute the path to the resource directory. 1075 StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 1076 SmallString<128> P(Dir); 1077 if (ClangResourceDir != "") { 1078 llvm::sys::path::append(P, ClangResourceDir); 1079 } else { 1080 StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX); 1081 llvm::sys::path::append(P, "..", Twine("lib") + ClangLibdirSuffix, "clang", 1082 CLANG_VERSION_STRING); 1083 } 1084 1085 return P.str(); 1086 } 1087 1088 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 1089 using namespace options; 1090 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 1091 Opts.Verbose = Args.hasArg(OPT_v); 1092 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 1093 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 1094 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 1095 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 1096 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 1097 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 1098 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 1099 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 1100 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 1101 Opts.ImplicitModuleMaps = Args.hasArg(OPT_fimplicit_module_maps); 1102 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd); 1103 Opts.ModuleCachePruneInterval = 1104 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 1105 Opts.ModuleCachePruneAfter = 1106 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 1107 Opts.ModulesValidateOncePerBuildSession = 1108 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 1109 Opts.BuildSessionTimestamp = 1110 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 1111 Opts.ModulesValidateSystemHeaders = 1112 Args.hasArg(OPT_fmodules_validate_system_headers); 1113 1114 for (const Arg *A : Args.filtered(OPT_fmodules_ignore_macro)) { 1115 StringRef MacroDef = A->getValue(); 1116 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1117 } 1118 1119 // Add -I..., -F..., and -index-header-map options in order. 1120 bool IsIndexHeaderMap = false; 1121 for (const Arg *A : Args.filtered(OPT_I, OPT_F, OPT_index_header_map)) { 1122 if (A->getOption().matches(OPT_index_header_map)) { 1123 // -index-header-map applies to the next -I or -F. 1124 IsIndexHeaderMap = true; 1125 continue; 1126 } 1127 1128 frontend::IncludeDirGroup Group = 1129 IsIndexHeaderMap ? frontend::IndexHeaderMap : frontend::Angled; 1130 1131 Opts.AddPath(A->getValue(), Group, 1132 /*IsFramework=*/A->getOption().matches(OPT_F), true); 1133 IsIndexHeaderMap = false; 1134 } 1135 1136 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1137 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1138 for (const Arg *A : 1139 Args.filtered(OPT_iprefix, OPT_iwithprefix, OPT_iwithprefixbefore)) { 1140 if (A->getOption().matches(OPT_iprefix)) 1141 Prefix = A->getValue(); 1142 else if (A->getOption().matches(OPT_iwithprefix)) 1143 Opts.AddPath(Prefix.str() + A->getValue(), frontend::After, false, true); 1144 else 1145 Opts.AddPath(Prefix.str() + A->getValue(), frontend::Angled, false, true); 1146 } 1147 1148 for (const Arg *A : Args.filtered(OPT_idirafter)) 1149 Opts.AddPath(A->getValue(), frontend::After, false, true); 1150 for (const Arg *A : Args.filtered(OPT_iquote)) 1151 Opts.AddPath(A->getValue(), frontend::Quoted, false, true); 1152 for (const Arg *A : Args.filtered(OPT_isystem, OPT_iwithsysroot)) 1153 Opts.AddPath(A->getValue(), frontend::System, false, 1154 !A->getOption().matches(OPT_iwithsysroot)); 1155 for (const Arg *A : Args.filtered(OPT_iframework)) 1156 Opts.AddPath(A->getValue(), frontend::System, true, true); 1157 1158 // Add the paths for the various language specific isystem flags. 1159 for (const Arg *A : Args.filtered(OPT_c_isystem)) 1160 Opts.AddPath(A->getValue(), frontend::CSystem, false, true); 1161 for (const Arg *A : Args.filtered(OPT_cxx_isystem)) 1162 Opts.AddPath(A->getValue(), frontend::CXXSystem, false, true); 1163 for (const Arg *A : Args.filtered(OPT_objc_isystem)) 1164 Opts.AddPath(A->getValue(), frontend::ObjCSystem, false,true); 1165 for (const Arg *A : Args.filtered(OPT_objcxx_isystem)) 1166 Opts.AddPath(A->getValue(), frontend::ObjCXXSystem, false, true); 1167 1168 // Add the internal paths from a driver that detects standard include paths. 1169 for (const Arg *A : 1170 Args.filtered(OPT_internal_isystem, OPT_internal_externc_isystem)) { 1171 frontend::IncludeDirGroup Group = frontend::System; 1172 if (A->getOption().matches(OPT_internal_externc_isystem)) 1173 Group = frontend::ExternCSystem; 1174 Opts.AddPath(A->getValue(), Group, false, true); 1175 } 1176 1177 // Add the path prefixes which are implicitly treated as being system headers. 1178 for (const Arg *A : 1179 Args.filtered(OPT_system_header_prefix, OPT_no_system_header_prefix)) 1180 Opts.AddSystemHeaderPrefix( 1181 A->getValue(), A->getOption().matches(OPT_system_header_prefix)); 1182 1183 for (const Arg *A : Args.filtered(OPT_ivfsoverlay)) 1184 Opts.AddVFSOverlayFile(A->getValue()); 1185 } 1186 1187 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1188 LangStandard::Kind LangStd) { 1189 // Set some properties which depend solely on the input kind; it would be nice 1190 // to move these to the language standard, and have the driver resolve the 1191 // input kind + language standard. 1192 if (IK == IK_Asm) { 1193 Opts.AsmPreprocessor = 1; 1194 } else if (IK == IK_ObjC || 1195 IK == IK_ObjCXX || 1196 IK == IK_PreprocessedObjC || 1197 IK == IK_PreprocessedObjCXX) { 1198 Opts.ObjC1 = Opts.ObjC2 = 1; 1199 } 1200 1201 if (LangStd == LangStandard::lang_unspecified) { 1202 // Based on the base language, pick one. 1203 switch (IK) { 1204 case IK_None: 1205 case IK_AST: 1206 case IK_LLVM_IR: 1207 llvm_unreachable("Invalid input kind!"); 1208 case IK_OpenCL: 1209 LangStd = LangStandard::lang_opencl; 1210 break; 1211 case IK_CUDA: 1212 case IK_PreprocessedCuda: 1213 LangStd = LangStandard::lang_cuda; 1214 break; 1215 case IK_Asm: 1216 case IK_C: 1217 case IK_PreprocessedC: 1218 case IK_ObjC: 1219 case IK_PreprocessedObjC: 1220 LangStd = LangStandard::lang_gnu11; 1221 break; 1222 case IK_CXX: 1223 case IK_PreprocessedCXX: 1224 case IK_ObjCXX: 1225 case IK_PreprocessedObjCXX: 1226 LangStd = LangStandard::lang_gnucxx98; 1227 break; 1228 } 1229 } 1230 1231 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1232 Opts.LineComment = Std.hasLineComments(); 1233 Opts.C99 = Std.isC99(); 1234 Opts.C11 = Std.isC11(); 1235 Opts.CPlusPlus = Std.isCPlusPlus(); 1236 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1237 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1238 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1239 Opts.Digraphs = Std.hasDigraphs(); 1240 Opts.GNUMode = Std.isGNUMode(); 1241 Opts.GNUInline = Std.isC89(); 1242 Opts.HexFloats = Std.hasHexFloats(); 1243 Opts.ImplicitInt = Std.hasImplicitInt(); 1244 1245 // Set OpenCL Version. 1246 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1247 if (LangStd == LangStandard::lang_opencl) 1248 Opts.OpenCLVersion = 100; 1249 else if (LangStd == LangStandard::lang_opencl11) 1250 Opts.OpenCLVersion = 110; 1251 else if (LangStd == LangStandard::lang_opencl12) 1252 Opts.OpenCLVersion = 120; 1253 else if (LangStd == LangStandard::lang_opencl20) 1254 Opts.OpenCLVersion = 200; 1255 1256 // OpenCL has some additional defaults. 1257 if (Opts.OpenCL) { 1258 Opts.AltiVec = 0; 1259 Opts.CXXOperatorNames = 1; 1260 Opts.LaxVectorConversions = 0; 1261 Opts.DefaultFPContract = 1; 1262 Opts.NativeHalfType = 1; 1263 } 1264 1265 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda || 1266 LangStd == LangStandard::lang_cuda; 1267 1268 // OpenCL and C++ both have bool, true, false keywords. 1269 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1270 1271 // OpenCL has half keyword 1272 Opts.Half = Opts.OpenCL; 1273 1274 // C++ has wchar_t keyword. 1275 Opts.WChar = Opts.CPlusPlus; 1276 1277 Opts.GNUKeywords = Opts.GNUMode; 1278 Opts.CXXOperatorNames = Opts.CPlusPlus; 1279 1280 Opts.DollarIdents = !Opts.AsmPreprocessor; 1281 } 1282 1283 /// Attempt to parse a visibility value out of the given argument. 1284 static Visibility parseVisibility(Arg *arg, ArgList &args, 1285 DiagnosticsEngine &diags) { 1286 StringRef value = arg->getValue(); 1287 if (value == "default") { 1288 return DefaultVisibility; 1289 } else if (value == "hidden") { 1290 return HiddenVisibility; 1291 } else if (value == "protected") { 1292 // FIXME: diagnose if target does not support protected visibility 1293 return ProtectedVisibility; 1294 } 1295 1296 diags.Report(diag::err_drv_invalid_value) 1297 << arg->getAsString(args) << value; 1298 return DefaultVisibility; 1299 } 1300 1301 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1302 DiagnosticsEngine &Diags) { 1303 // FIXME: Cleanup per-file based stuff. 1304 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1305 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1306 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1307 #define LANGSTANDARD(id, name, desc, features) \ 1308 .Case(name, LangStandard::lang_##id) 1309 #include "clang/Frontend/LangStandards.def" 1310 .Default(LangStandard::lang_unspecified); 1311 if (LangStd == LangStandard::lang_unspecified) 1312 Diags.Report(diag::err_drv_invalid_value) 1313 << A->getAsString(Args) << A->getValue(); 1314 else { 1315 // Valid standard, check to make sure language and standard are 1316 // compatible. 1317 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1318 switch (IK) { 1319 case IK_C: 1320 case IK_ObjC: 1321 case IK_PreprocessedC: 1322 case IK_PreprocessedObjC: 1323 if (!(Std.isC89() || Std.isC99())) 1324 Diags.Report(diag::err_drv_argument_not_allowed_with) 1325 << A->getAsString(Args) << "C/ObjC"; 1326 break; 1327 case IK_CXX: 1328 case IK_ObjCXX: 1329 case IK_PreprocessedCXX: 1330 case IK_PreprocessedObjCXX: 1331 if (!Std.isCPlusPlus()) 1332 Diags.Report(diag::err_drv_argument_not_allowed_with) 1333 << A->getAsString(Args) << "C++/ObjC++"; 1334 break; 1335 case IK_OpenCL: 1336 if (!Std.isC99()) 1337 Diags.Report(diag::err_drv_argument_not_allowed_with) 1338 << A->getAsString(Args) << "OpenCL"; 1339 break; 1340 case IK_CUDA: 1341 case IK_PreprocessedCuda: 1342 if (!Std.isCPlusPlus()) 1343 Diags.Report(diag::err_drv_argument_not_allowed_with) 1344 << A->getAsString(Args) << "CUDA"; 1345 break; 1346 default: 1347 break; 1348 } 1349 } 1350 } 1351 1352 // -cl-std only applies for OpenCL language standards. 1353 // Override the -std option in this case. 1354 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1355 LangStandard::Kind OpenCLLangStd 1356 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1357 .Case("CL", LangStandard::lang_opencl) 1358 .Case("CL1.1", LangStandard::lang_opencl11) 1359 .Case("CL1.2", LangStandard::lang_opencl12) 1360 .Case("CL2.0", LangStandard::lang_opencl20) 1361 .Default(LangStandard::lang_unspecified); 1362 1363 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1364 Diags.Report(diag::err_drv_invalid_value) 1365 << A->getAsString(Args) << A->getValue(); 1366 } 1367 else 1368 LangStd = OpenCLLangStd; 1369 } 1370 1371 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1372 1373 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1374 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1375 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1376 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1377 // name, as it doesn't seem a useful distinction. 1378 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1379 Opts.GNUKeywords); 1380 1381 if (Args.hasArg(OPT_fno_operator_names)) 1382 Opts.CXXOperatorNames = 0; 1383 1384 if (Args.hasArg(OPT_fcuda_is_device)) 1385 Opts.CUDAIsDevice = 1; 1386 1387 if (Args.hasArg(OPT_fcuda_allow_host_calls_from_host_device)) 1388 Opts.CUDAAllowHostCallsFromHostDevice = 1; 1389 1390 if (Args.hasArg(OPT_fcuda_disable_target_call_checks)) 1391 Opts.CUDADisableTargetCallChecks = 1; 1392 1393 if (Opts.ObjC1) { 1394 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1395 StringRef value = arg->getValue(); 1396 if (Opts.ObjCRuntime.tryParse(value)) 1397 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1398 } 1399 1400 if (Args.hasArg(OPT_fobjc_gc_only)) 1401 Opts.setGC(LangOptions::GCOnly); 1402 else if (Args.hasArg(OPT_fobjc_gc)) 1403 Opts.setGC(LangOptions::HybridGC); 1404 else if (Args.hasArg(OPT_fobjc_arc)) { 1405 Opts.ObjCAutoRefCount = 1; 1406 if (!Opts.ObjCRuntime.allowsARC()) 1407 Diags.Report(diag::err_arc_unsupported_on_runtime); 1408 1409 // Only set ObjCARCWeak if ARC is enabled. 1410 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1411 Opts.ObjCARCWeak = 1; 1412 else 1413 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1414 } 1415 1416 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1417 Opts.ObjCInferRelatedResultType = 0; 1418 1419 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1420 Opts.ObjCSubscriptingLegacyRuntime = 1421 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1422 } 1423 1424 if (Args.hasArg(OPT_fgnu89_inline)) { 1425 if (Opts.CPlusPlus) 1426 Diags.Report(diag::err_drv_argument_not_allowed_with) << "-fgnu89-inline" 1427 << "C++/ObjC++"; 1428 else 1429 Opts.GNUInline = 1; 1430 } 1431 1432 if (Args.hasArg(OPT_fapple_kext)) { 1433 if (!Opts.CPlusPlus) 1434 Diags.Report(diag::warn_c_kext); 1435 else 1436 Opts.AppleKext = 1; 1437 } 1438 1439 if (Args.hasArg(OPT_print_ivar_layout)) 1440 Opts.ObjCGCBitmapPrint = 1; 1441 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1442 Opts.NoConstantCFStrings = 1; 1443 1444 if (Args.hasArg(OPT_faltivec)) 1445 Opts.AltiVec = 1; 1446 1447 if (Args.hasArg(OPT_pthread)) 1448 Opts.POSIXThreads = 1; 1449 1450 // The value-visibility mode defaults to "default". 1451 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1452 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1453 } else { 1454 Opts.setValueVisibilityMode(DefaultVisibility); 1455 } 1456 1457 // The type-visibility mode defaults to the value-visibility mode. 1458 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1459 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1460 } else { 1461 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1462 } 1463 1464 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1465 Opts.InlineVisibilityHidden = 1; 1466 1467 if (Args.hasArg(OPT_ftrapv)) { 1468 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1469 // Set the handler, if one is specified. 1470 Opts.OverflowHandler = 1471 Args.getLastArgValue(OPT_ftrapv_handler); 1472 } 1473 else if (Args.hasArg(OPT_fwrapv)) 1474 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1475 1476 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1477 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1478 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1479 Opts.MSCompatibilityVersion = 0; 1480 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) { 1481 VersionTuple VT; 1482 if (VT.tryParse(A->getValue())) 1483 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) 1484 << A->getValue(); 1485 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 + 1486 VT.getMinor().getValueOr(0) * 100000 + 1487 VT.getSubminor().getValueOr(0); 1488 } 1489 1490 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1491 // is specified, or -std is set to a conforming mode. 1492 // Trigraphs are disabled by default in c++1z onwards. 1493 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z; 1494 Opts.Trigraphs = 1495 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs); 1496 1497 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1498 OPT_fno_dollars_in_identifiers, 1499 Opts.DollarIdents); 1500 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1501 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1502 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1503 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1504 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1505 Opts.ConstStrings); 1506 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1507 Opts.LaxVectorConversions = 0; 1508 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1509 Opts.ThreadsafeStatics = 0; 1510 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1511 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1512 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1513 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1514 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1515 1516 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1517 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1518 Opts.Blocks = Args.hasArg(OPT_fblocks); 1519 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1520 Opts.Modules = Args.hasArg(OPT_fmodules); 1521 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1522 Opts.ModulesDeclUse = 1523 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1524 Opts.ModulesLocalVisibility = 1525 Args.hasArg(OPT_fmodules_local_submodule_visibility); 1526 Opts.ModulesHideInternalLinkage = 1527 !Args.hasArg(OPT_fno_modules_hide_internal_linkage); 1528 Opts.ModulesSearchAll = Opts.Modules && 1529 !Args.hasArg(OPT_fno_modules_search_all) && 1530 Args.hasArg(OPT_fmodules_search_all); 1531 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1532 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules); 1533 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1534 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1535 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1536 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1537 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1538 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1539 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1540 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1541 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation); 1542 Opts.ConceptsTS = Args.hasArg(OPT_fconcepts_ts); 1543 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1544 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1545 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1546 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1547 Opts.InstantiationDepth = 1548 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1549 Opts.ArrowDepth = 1550 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1551 Opts.ConstexprCallDepth = 1552 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1553 Opts.ConstexprStepLimit = 1554 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1555 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1556 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1557 Opts.NumLargeByValueCopy = 1558 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1559 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1560 Opts.ObjCConstantStringClass = 1561 Args.getLastArgValue(OPT_fconstant_string_class); 1562 Opts.ObjCDefaultSynthProperties = 1563 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1564 Opts.EncodeExtendedBlockSig = 1565 Args.hasArg(OPT_fencode_extended_block_signature); 1566 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1567 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1568 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1569 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1570 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1571 Opts.Static = Args.hasArg(OPT_static_define); 1572 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1573 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1574 || Args.hasArg(OPT_fdump_record_layouts); 1575 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1576 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1577 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1578 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1579 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1580 Opts.MRTD = Args.hasArg(OPT_mrtd); 1581 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1582 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1583 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1584 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1585 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1586 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1587 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1588 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1589 Opts.AppExt = Args.hasArg(OPT_fapplication_extension); 1590 Opts.ImplementationOfModule = 1591 Args.getLastArgValue(OPT_fmodule_implementation_of); 1592 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature); 1593 std::sort(Opts.ModuleFeatures.begin(), Opts.ModuleFeatures.end()); 1594 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type); 1595 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns); 1596 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm); 1597 1598 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1599 Opts.CurrentModule != Opts.ImplementationOfModule) { 1600 Diags.Report(diag::err_conflicting_module_names) 1601 << Opts.CurrentModule << Opts.ImplementationOfModule; 1602 } 1603 1604 // For now, we only support local submodule visibility in C++ (because we 1605 // heavily depend on the ODR for merging redefinitions). 1606 if (Opts.ModulesLocalVisibility && !Opts.CPlusPlus) 1607 Diags.Report(diag::err_drv_argument_not_allowed_with) 1608 << "-fmodules-local-submodule-visibility" << "C"; 1609 1610 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1611 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1612 .Case("target", LangOptions::ASMM_Target) 1613 .Case("no", LangOptions::ASMM_Off) 1614 .Case("yes", LangOptions::ASMM_On) 1615 .Default(255)) { 1616 default: 1617 Diags.Report(diag::err_drv_invalid_value) 1618 << "-faddress-space-map-mangling=" << A->getValue(); 1619 break; 1620 case LangOptions::ASMM_Target: 1621 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1622 break; 1623 case LangOptions::ASMM_On: 1624 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1625 break; 1626 case LangOptions::ASMM_Off: 1627 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1628 break; 1629 } 1630 } 1631 1632 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1633 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1634 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1635 A->getValue()) 1636 .Case("single", 1637 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1638 .Case("multiple", 1639 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1640 .Case("virtual", 1641 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1642 .Default(LangOptions::PPTMK_BestCase); 1643 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1644 Diags.Report(diag::err_drv_invalid_value) 1645 << "-fms-memptr-rep=" << A->getValue(); 1646 1647 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1648 } 1649 1650 // Check if -fopenmp is specified. 1651 Opts.OpenMP = Args.hasArg(options::OPT_fopenmp); 1652 1653 // Record whether the __DEPRECATED define was requested. 1654 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1655 OPT_fno_deprecated_macro, 1656 Opts.Deprecated); 1657 1658 // FIXME: Eliminate this dependency. 1659 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1660 OptSize = getOptimizationLevelSize(Args); 1661 Opts.Optimize = Opt != 0; 1662 Opts.OptimizeSize = OptSize != 0; 1663 1664 // This is the __NO_INLINE__ define, which just depends on things like the 1665 // optimization level and -fno-inline, not actually whether the backend has 1666 // inlining enabled. 1667 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1668 1669 Opts.FastMath = Args.hasArg(OPT_ffast_math) || 1670 Args.hasArg(OPT_cl_fast_relaxed_math); 1671 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) || 1672 Args.hasArg(OPT_cl_finite_math_only) || 1673 Args.hasArg(OPT_cl_fast_relaxed_math); 1674 1675 Opts.RetainCommentsFromSystemHeaders = 1676 Args.hasArg(OPT_fretain_comments_from_system_headers); 1677 1678 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1679 switch (SSP) { 1680 default: 1681 Diags.Report(diag::err_drv_invalid_value) 1682 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1683 break; 1684 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1685 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1686 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1687 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1688 } 1689 1690 // Parse -fsanitize= arguments. 1691 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ), 1692 Diags, Opts.Sanitize); 1693 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here. 1694 Opts.SanitizeAddressFieldPadding = 1695 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags); 1696 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist); 1697 } 1698 1699 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1700 FileManager &FileMgr, 1701 DiagnosticsEngine &Diags) { 1702 using namespace options; 1703 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1704 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1705 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1706 Opts.TokenCache = A->getValue(); 1707 else 1708 Opts.TokenCache = Opts.ImplicitPTHInclude; 1709 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1710 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1711 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1712 1713 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1714 for (const Arg *A : Args.filtered(OPT_error_on_deserialized_pch_decl)) 1715 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1716 1717 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1718 StringRef Value(A->getValue()); 1719 size_t Comma = Value.find(','); 1720 unsigned Bytes = 0; 1721 unsigned EndOfLine = 0; 1722 1723 if (Comma == StringRef::npos || 1724 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1725 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1726 Diags.Report(diag::err_drv_preamble_format); 1727 else { 1728 Opts.PrecompiledPreambleBytes.first = Bytes; 1729 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1730 } 1731 } 1732 1733 // Add macros from the command line. 1734 for (const Arg *A : Args.filtered(OPT_D, OPT_U)) { 1735 if (A->getOption().matches(OPT_D)) 1736 Opts.addMacroDef(A->getValue()); 1737 else 1738 Opts.addMacroUndef(A->getValue()); 1739 } 1740 1741 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1742 1743 // Add the ordered list of -includes. 1744 for (const Arg *A : Args.filtered(OPT_include)) 1745 Opts.Includes.emplace_back(A->getValue()); 1746 1747 for (const Arg *A : Args.filtered(OPT_chain_include)) 1748 Opts.ChainedIncludes.emplace_back(A->getValue()); 1749 1750 // Include 'altivec.h' if -faltivec option present 1751 if (Args.hasArg(OPT_faltivec)) 1752 Opts.Includes.emplace_back("altivec.h"); 1753 1754 for (const Arg *A : Args.filtered(OPT_remap_file)) { 1755 std::pair<StringRef, StringRef> Split = StringRef(A->getValue()).split(';'); 1756 1757 if (Split.second.empty()) { 1758 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1759 continue; 1760 } 1761 1762 Opts.addRemappedFile(Split.first, Split.second); 1763 } 1764 1765 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1766 StringRef Name = A->getValue(); 1767 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1768 .Case("libc++", ARCXX_libcxx) 1769 .Case("libstdc++", ARCXX_libstdcxx) 1770 .Case("none", ARCXX_nolib) 1771 .Default(~0U); 1772 if (Library == ~0U) 1773 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1774 else 1775 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1776 } 1777 } 1778 1779 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1780 ArgList &Args, 1781 frontend::ActionKind Action) { 1782 using namespace options; 1783 1784 switch (Action) { 1785 case frontend::ASTDeclList: 1786 case frontend::ASTDump: 1787 case frontend::ASTPrint: 1788 case frontend::ASTView: 1789 case frontend::EmitAssembly: 1790 case frontend::EmitBC: 1791 case frontend::EmitHTML: 1792 case frontend::EmitLLVM: 1793 case frontend::EmitLLVMOnly: 1794 case frontend::EmitCodeGenOnly: 1795 case frontend::EmitObj: 1796 case frontend::FixIt: 1797 case frontend::GenerateModule: 1798 case frontend::GeneratePCH: 1799 case frontend::GeneratePTH: 1800 case frontend::ParseSyntaxOnly: 1801 case frontend::ModuleFileInfo: 1802 case frontend::VerifyPCH: 1803 case frontend::PluginAction: 1804 case frontend::PrintDeclContext: 1805 case frontend::RewriteObjC: 1806 case frontend::RewriteTest: 1807 case frontend::RunAnalysis: 1808 case frontend::MigrateSource: 1809 Opts.ShowCPP = 0; 1810 break; 1811 1812 case frontend::DumpRawTokens: 1813 case frontend::DumpTokens: 1814 case frontend::InitOnly: 1815 case frontend::PrintPreamble: 1816 case frontend::PrintPreprocessedInput: 1817 case frontend::RewriteMacros: 1818 case frontend::RunPreprocessorOnly: 1819 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1820 break; 1821 } 1822 1823 Opts.ShowComments = Args.hasArg(OPT_C); 1824 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1825 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1826 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1827 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1828 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives); 1829 } 1830 1831 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1832 using namespace options; 1833 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1834 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1835 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1836 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1837 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1838 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1839 Opts.Reciprocals = Args.getAllArgValues(OPT_mrecip_EQ); 1840 // Use the default target triple if unspecified. 1841 if (Opts.Triple.empty()) 1842 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1843 } 1844 1845 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1846 const char *const *ArgBegin, 1847 const char *const *ArgEnd, 1848 DiagnosticsEngine &Diags) { 1849 bool Success = true; 1850 1851 // Parse the arguments. 1852 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1853 const unsigned IncludedFlagsBitmask = options::CC1Option; 1854 unsigned MissingArgIndex, MissingArgCount; 1855 InputArgList Args = 1856 Opts->ParseArgs(llvm::makeArrayRef(ArgBegin, ArgEnd), MissingArgIndex, 1857 MissingArgCount, IncludedFlagsBitmask); 1858 1859 // Check for missing argument error. 1860 if (MissingArgCount) { 1861 Diags.Report(diag::err_drv_missing_argument) 1862 << Args.getArgString(MissingArgIndex) << MissingArgCount; 1863 Success = false; 1864 } 1865 1866 // Issue errors on unknown arguments. 1867 for (const Arg *A : Args.filtered(OPT_UNKNOWN)) { 1868 Diags.Report(diag::err_drv_unknown_argument) << A->getAsString(Args); 1869 Success = false; 1870 } 1871 1872 Success &= ParseAnalyzerArgs(*Res.getAnalyzerOpts(), Args, Diags); 1873 Success &= ParseMigratorArgs(Res.getMigratorOpts(), Args); 1874 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), Args); 1875 Success &= ParseDiagnosticArgs(Res.getDiagnosticOpts(), Args, &Diags); 1876 ParseCommentArgs(Res.getLangOpts()->CommentOpts, Args); 1877 ParseFileSystemArgs(Res.getFileSystemOpts(), Args); 1878 // FIXME: We shouldn't have to pass the DashX option around here 1879 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), Args, Diags); 1880 ParseTargetArgs(Res.getTargetOpts(), Args); 1881 Success &= ParseCodeGenArgs(Res.getCodeGenOpts(), Args, DashX, Diags, 1882 Res.getTargetOpts()); 1883 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), Args); 1884 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1885 ParseLangArgs(*Res.getLangOpts(), Args, DashX, Diags); 1886 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1887 Res.getLangOpts()->ObjCExceptions = 1; 1888 } 1889 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1890 // PCH file and find the original header name. Remove the need to do that in 1891 // ParsePreprocessorArgs and remove the FileManager 1892 // parameters from the function and the "FileManager.h" #include. 1893 FileManager FileMgr(Res.getFileSystemOpts()); 1894 ParsePreprocessorArgs(Res.getPreprocessorOpts(), Args, FileMgr, Diags); 1895 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), Args, 1896 Res.getFrontendOpts().ProgramAction); 1897 return Success; 1898 } 1899 1900 namespace { 1901 1902 class ModuleSignature { 1903 SmallVector<uint64_t, 16> Data; 1904 unsigned CurBit; 1905 uint64_t CurValue; 1906 1907 public: 1908 ModuleSignature() : CurBit(0), CurValue(0) { } 1909 1910 void add(uint64_t Value, unsigned Bits); 1911 void add(StringRef Value); 1912 void flush(); 1913 1914 llvm::APInt getAsInteger() const; 1915 }; 1916 } 1917 1918 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1919 CurValue |= Value << CurBit; 1920 if (CurBit + NumBits < 64) { 1921 CurBit += NumBits; 1922 return; 1923 } 1924 1925 // Add the current word. 1926 Data.push_back(CurValue); 1927 1928 if (CurBit) 1929 CurValue = Value >> (64-CurBit); 1930 else 1931 CurValue = 0; 1932 CurBit = (CurBit+NumBits) & 63; 1933 } 1934 1935 void ModuleSignature::flush() { 1936 if (CurBit == 0) 1937 return; 1938 1939 Data.push_back(CurValue); 1940 CurBit = 0; 1941 CurValue = 0; 1942 } 1943 1944 void ModuleSignature::add(StringRef Value) { 1945 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1946 add(*I, 8); 1947 } 1948 1949 llvm::APInt ModuleSignature::getAsInteger() const { 1950 return llvm::APInt(Data.size() * 64, Data); 1951 } 1952 1953 std::string CompilerInvocation::getModuleHash() const { 1954 // Note: For QoI reasons, the things we use as a hash here should all be 1955 // dumped via the -module-info flag. 1956 using llvm::hash_code; 1957 using llvm::hash_value; 1958 using llvm::hash_combine; 1959 1960 // Start the signature with the compiler version. 1961 // FIXME: We'd rather use something more cryptographically sound than 1962 // CityHash, but this will do for now. 1963 hash_code code = hash_value(getClangFullRepositoryVersion()); 1964 1965 // Extend the signature with the language options 1966 #define LANGOPT(Name, Bits, Default, Description) \ 1967 code = hash_combine(code, LangOpts->Name); 1968 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1969 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1970 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1971 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1972 #include "clang/Basic/LangOptions.def" 1973 1974 for (StringRef Feature : LangOpts->ModuleFeatures) 1975 code = hash_combine(code, Feature); 1976 1977 // Extend the signature with the target options. 1978 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1979 TargetOpts->ABI); 1980 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1981 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1982 1983 // Extend the signature with preprocessor options. 1984 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1985 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1986 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1987 1988 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1989 I = getPreprocessorOpts().Macros.begin(), 1990 IEnd = getPreprocessorOpts().Macros.end(); 1991 I != IEnd; ++I) { 1992 // If we're supposed to ignore this macro for the purposes of modules, 1993 // don't put it into the hash. 1994 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1995 // Check whether we're ignoring this macro. 1996 StringRef MacroDef = I->first; 1997 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1998 continue; 1999 } 2000 2001 code = hash_combine(code, I->first, I->second); 2002 } 2003 2004 // Extend the signature with the sysroot. 2005 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 2006 hsOpts.UseStandardSystemIncludes, 2007 hsOpts.UseStandardCXXIncludes, 2008 hsOpts.UseLibcxx); 2009 code = hash_combine(code, hsOpts.ResourceDir); 2010 2011 // Extend the signature with the user build path. 2012 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 2013 2014 // Darwin-specific hack: if we have a sysroot, use the contents and 2015 // modification time of 2016 // $sysroot/System/Library/CoreServices/SystemVersion.plist 2017 // as part of the module hash. 2018 if (!hsOpts.Sysroot.empty()) { 2019 SmallString<128> systemVersionFile; 2020 systemVersionFile += hsOpts.Sysroot; 2021 llvm::sys::path::append(systemVersionFile, "System"); 2022 llvm::sys::path::append(systemVersionFile, "Library"); 2023 llvm::sys::path::append(systemVersionFile, "CoreServices"); 2024 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 2025 2026 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 2027 llvm::MemoryBuffer::getFile(systemVersionFile); 2028 if (buffer) { 2029 code = hash_combine(code, buffer.get()->getBuffer()); 2030 2031 struct stat statBuf; 2032 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 2033 code = hash_combine(code, statBuf.st_mtime); 2034 } 2035 } 2036 2037 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 2038 } 2039 2040 namespace clang { 2041 2042 template<typename IntTy> 2043 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 2044 IntTy Default, 2045 DiagnosticsEngine *Diags) { 2046 IntTy Res = Default; 2047 if (Arg *A = Args.getLastArg(Id)) { 2048 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 2049 if (Diags) 2050 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 2051 << A->getValue(); 2052 } 2053 } 2054 return Res; 2055 } 2056 2057 2058 // Declared in clang/Frontend/Utils.h. 2059 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2060 DiagnosticsEngine *Diags) { 2061 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2062 } 2063 2064 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2065 uint64_t Default, 2066 DiagnosticsEngine *Diags) { 2067 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2068 } 2069 2070 void BuryPointer(const void *Ptr) { 2071 // This function may be called only a small fixed amount of times per each 2072 // invocation, otherwise we do actually have a leak which we want to report. 2073 // If this function is called more than kGraveYardMaxSize times, the pointers 2074 // will not be properly buried and a leak detector will report a leak, which 2075 // is what we want in such case. 2076 static const size_t kGraveYardMaxSize = 16; 2077 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2078 static std::atomic<unsigned> GraveYardSize; 2079 unsigned Idx = GraveYardSize++; 2080 if (Idx >= kGraveYardMaxSize) 2081 return; 2082 GraveYard[Idx] = Ptr; 2083 } 2084 2085 IntrusiveRefCntPtr<vfs::FileSystem> 2086 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2087 DiagnosticsEngine &Diags) { 2088 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2089 return vfs::getRealFileSystem(); 2090 2091 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2092 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2093 // earlier vfs files are on the bottom 2094 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2095 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2096 llvm::MemoryBuffer::getFile(File); 2097 if (!Buffer) { 2098 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2099 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2100 } 2101 2102 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2103 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr); 2104 if (!FS.get()) { 2105 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2106 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2107 } 2108 Overlay->pushOverlay(FS); 2109 } 2110 return Overlay; 2111 } 2112 } // end namespace clang 2113