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/Driver/DriverDiagnostic.h" 14 #include "clang/Driver/Options.h" 15 #include "clang/Driver/Util.h" 16 #include "clang/Frontend/FrontendDiagnostic.h" 17 #include "clang/Frontend/LangStandard.h" 18 #include "clang/Frontend/Utils.h" 19 #include "clang/Lex/HeaderSearchOptions.h" 20 #include "clang/Serialization/ASTReader.h" 21 #include "llvm/ADT/Hashing.h" 22 #include "llvm/ADT/SmallVector.h" 23 #include "llvm/ADT/STLExtras.h" 24 #include "llvm/ADT/StringExtras.h" 25 #include "llvm/ADT/StringSwitch.h" 26 #include "llvm/ADT/Triple.h" 27 #include "llvm/Option/Arg.h" 28 #include "llvm/Option/ArgList.h" 29 #include "llvm/Option/OptTable.h" 30 #include "llvm/Option/Option.h" 31 #include "llvm/Support/CodeGen.h" 32 #include "llvm/Support/ErrorHandling.h" 33 #include "llvm/Support/FileSystem.h" 34 #include "llvm/Support/Host.h" 35 #include "llvm/Support/Path.h" 36 #include "llvm/Support/Process.h" 37 #include <atomic> 38 #include <memory> 39 #include <sys/stat.h> 40 #include <system_error> 41 using namespace clang; 42 43 //===----------------------------------------------------------------------===// 44 // Initialization. 45 //===----------------------------------------------------------------------===// 46 47 CompilerInvocationBase::CompilerInvocationBase() 48 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 49 DiagnosticOpts(new DiagnosticOptions()), 50 HeaderSearchOpts(new HeaderSearchOptions()), 51 PreprocessorOpts(new PreprocessorOptions()) {} 52 53 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 54 : RefCountedBase<CompilerInvocation>(), 55 LangOpts(new LangOptions(*X.getLangOpts())), 56 TargetOpts(new TargetOptions(X.getTargetOpts())), 57 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 58 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 59 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 60 61 CompilerInvocationBase::~CompilerInvocationBase() {} 62 63 //===----------------------------------------------------------------------===// 64 // Deserialization (from args) 65 //===----------------------------------------------------------------------===// 66 67 using namespace clang::driver; 68 using namespace clang::driver::options; 69 using namespace llvm::opt; 70 71 // 72 73 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 74 DiagnosticsEngine &Diags) { 75 unsigned DefaultOpt = 0; 76 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 77 DefaultOpt = 2; 78 79 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 80 if (A->getOption().matches(options::OPT_O0)) 81 return 0; 82 83 if (A->getOption().matches(options::OPT_Ofast)) 84 return 3; 85 86 assert (A->getOption().matches(options::OPT_O)); 87 88 StringRef S(A->getValue()); 89 if (S == "s" || S == "z" || S.empty()) 90 return 2; 91 92 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 93 } 94 95 return DefaultOpt; 96 } 97 98 static unsigned getOptimizationLevelSize(ArgList &Args) { 99 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 100 if (A->getOption().matches(options::OPT_O)) { 101 switch (A->getValue()[0]) { 102 default: 103 return 0; 104 case 's': 105 return 1; 106 case 'z': 107 return 2; 108 } 109 } 110 } 111 return 0; 112 } 113 114 static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) { 115 for (arg_iterator I = Args.filtered_begin(OPT_W_Group), 116 E = Args.filtered_end(); I != E; ++I) { 117 Arg *A = *I; 118 // If the argument is a pure flag, add its name (minus the "W" at the beginning) 119 // to the warning list. Else, add its value (for the OPT_W case). 120 if (A->getOption().getKind() == Option::FlagClass) { 121 Warnings.push_back(A->getOption().getName().substr(1)); 122 } else { 123 for (unsigned Idx = 0, End = A->getNumValues(); 124 Idx < End; ++Idx) { 125 StringRef V = A->getValue(Idx); 126 // "-Wl," and such are not warning options. 127 // FIXME: Should be handled by putting these in separate flags. 128 if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,")) 129 continue; 130 131 Warnings.push_back(V); 132 } 133 } 134 } 135 } 136 137 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 138 DiagnosticsEngine &Diags) { 139 using namespace options; 140 bool Success = true; 141 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 142 StringRef Name = A->getValue(); 143 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 144 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 145 .Case(CMDFLAG, NAME##Model) 146 #include "clang/StaticAnalyzer/Core/Analyses.def" 147 .Default(NumStores); 148 if (Value == NumStores) { 149 Diags.Report(diag::err_drv_invalid_value) 150 << A->getAsString(Args) << Name; 151 Success = false; 152 } else { 153 Opts.AnalysisStoreOpt = Value; 154 } 155 } 156 157 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 158 StringRef Name = A->getValue(); 159 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 160 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 161 .Case(CMDFLAG, NAME##Model) 162 #include "clang/StaticAnalyzer/Core/Analyses.def" 163 .Default(NumConstraints); 164 if (Value == NumConstraints) { 165 Diags.Report(diag::err_drv_invalid_value) 166 << A->getAsString(Args) << Name; 167 Success = false; 168 } else { 169 Opts.AnalysisConstraintsOpt = Value; 170 } 171 } 172 173 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 174 StringRef Name = A->getValue(); 175 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 176 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 177 .Case(CMDFLAG, PD_##NAME) 178 #include "clang/StaticAnalyzer/Core/Analyses.def" 179 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 180 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 181 Diags.Report(diag::err_drv_invalid_value) 182 << A->getAsString(Args) << Name; 183 Success = false; 184 } else { 185 Opts.AnalysisDiagOpt = Value; 186 } 187 } 188 189 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 190 StringRef Name = A->getValue(); 191 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 192 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 193 .Case(CMDFLAG, NAME) 194 #include "clang/StaticAnalyzer/Core/Analyses.def" 195 .Default(NumPurgeModes); 196 if (Value == NumPurgeModes) { 197 Diags.Report(diag::err_drv_invalid_value) 198 << A->getAsString(Args) << Name; 199 Success = false; 200 } else { 201 Opts.AnalysisPurgeOpt = Value; 202 } 203 } 204 205 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 206 StringRef Name = A->getValue(); 207 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 208 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 209 .Case(CMDFLAG, NAME) 210 #include "clang/StaticAnalyzer/Core/Analyses.def" 211 .Default(NumInliningModes); 212 if (Value == NumInliningModes) { 213 Diags.Report(diag::err_drv_invalid_value) 214 << A->getAsString(Args) << Name; 215 Success = false; 216 } else { 217 Opts.InliningMode = Value; 218 } 219 } 220 221 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 222 Opts.visualizeExplodedGraphWithGraphViz = 223 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 224 Opts.visualizeExplodedGraphWithUbiGraph = 225 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 226 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 227 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 228 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 229 Opts.AnalyzeNestedBlocks = 230 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 231 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 232 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 233 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 234 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 235 Opts.maxBlockVisitOnPath = 236 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 237 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 238 Opts.InlineMaxStackDepth = 239 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 240 Opts.InlineMaxStackDepth, Diags); 241 242 Opts.CheckersControlList.clear(); 243 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 244 OPT_analyzer_disable_checker), 245 ie = Args.filtered_end(); it != ie; ++it) { 246 const Arg *A = *it; 247 A->claim(); 248 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 249 // We can have a list of comma separated checker names, e.g: 250 // '-analyzer-checker=cocoa,unix' 251 StringRef checkerList = A->getValue(); 252 SmallVector<StringRef, 4> checkers; 253 checkerList.split(checkers, ","); 254 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 255 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 256 } 257 258 // Go through the analyzer configuration options. 259 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 260 ie = Args.filtered_end(); it != ie; ++it) { 261 const Arg *A = *it; 262 A->claim(); 263 // We can have a list of comma separated config names, e.g: 264 // '-analyzer-config key1=val1,key2=val2' 265 StringRef configList = A->getValue(); 266 SmallVector<StringRef, 4> configVals; 267 configList.split(configVals, ","); 268 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 269 StringRef key, val; 270 std::tie(key, val) = configVals[i].split("="); 271 if (val.empty()) { 272 Diags.Report(SourceLocation(), 273 diag::err_analyzer_config_no_value) << configVals[i]; 274 Success = false; 275 break; 276 } 277 if (val.find('=') != StringRef::npos) { 278 Diags.Report(SourceLocation(), 279 diag::err_analyzer_config_multiple_values) 280 << configVals[i]; 281 Success = false; 282 break; 283 } 284 Opts.Config[key] = val; 285 } 286 } 287 288 return Success; 289 } 290 291 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 292 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 293 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 294 return true; 295 } 296 297 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 298 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 299 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 300 } 301 302 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 303 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 304 StringRef Value = A->getValue(); 305 if (Value == "small" || Value == "kernel" || Value == "medium" || 306 Value == "large") 307 return Value; 308 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 309 } 310 return "default"; 311 } 312 313 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 314 /// It returns a pointer to the newly generated Regex instance. 315 static std::shared_ptr<llvm::Regex> 316 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 317 Arg *RpassArg) { 318 StringRef Val = RpassArg->getValue(); 319 std::string RegexError; 320 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 321 if (!Pattern->isValid(RegexError)) { 322 Diags.Report(diag::err_drv_optimization_remark_pattern) 323 << RegexError << RpassArg->getAsString(Args); 324 Pattern.reset(); 325 } 326 return Pattern; 327 } 328 329 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 330 DiagnosticsEngine &Diags, 331 const TargetOptions &TargetOpts) { 332 using namespace options; 333 bool Success = true; 334 335 Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 336 // TODO: This could be done in Driver 337 unsigned MaxOptLevel = 3; 338 if (Opts.OptimizationLevel > MaxOptLevel) { 339 // If the optimization level is not supported, fall back on the default optimization 340 Diags.Report(diag::warn_drv_optimization_value) 341 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 342 Opts.OptimizationLevel = MaxOptLevel; 343 } 344 345 // We must always run at least the always inlining pass. 346 Opts.setInlining( 347 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 348 : CodeGenOptions::OnlyAlwaysInlining); 349 // -fno-inline-functions overrides OptimizationLevel > 1. 350 Opts.NoInline = Args.hasArg(OPT_fno_inline); 351 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 352 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 353 354 if (Args.hasArg(OPT_gline_tables_only)) { 355 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 356 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) || 357 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) { 358 bool Default = false; 359 // Until dtrace (via CTF) and LLDB can deal with distributed debug info, 360 // Darwin and FreeBSD default to standalone/full debug info. 361 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() || 362 llvm::Triple(TargetOpts.Triple).isOSFreeBSD()) 363 Default = true; 364 365 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default)) 366 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 367 else 368 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 369 } 370 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 371 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 372 if (Args.hasArg(OPT_gdwarf_2)) 373 Opts.DwarfVersion = 2; 374 else if (Args.hasArg(OPT_gdwarf_3)) 375 Opts.DwarfVersion = 3; 376 else if (Args.hasArg(OPT_gdwarf_4)) 377 Opts.DwarfVersion = 4; 378 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo) 379 // Default Dwarf version is 4 if we are generating debug information. 380 Opts.DwarfVersion = 4; 381 382 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 383 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 384 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 385 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 386 OPT_fuse_register_sized_bitfield_access); 387 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 388 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 389 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 390 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 391 Opts.NoCommon = Args.hasArg(OPT_fno_common); 392 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 393 Opts.OptimizeSize = getOptimizationLevelSize(Args); 394 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 395 Args.hasArg(OPT_ffreestanding)); 396 Opts.UnrollLoops = 397 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 398 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 399 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 400 401 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 402 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 403 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 404 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate); 405 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); 406 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 407 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 408 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 409 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 410 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 411 Opts.CodeModel = getCodeModel(Args, Diags); 412 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 413 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 414 Opts.DisableFree = Args.hasArg(OPT_disable_free); 415 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 416 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 417 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 418 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 419 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 420 Args.hasArg(OPT_cl_finite_math_only)|| 421 Args.hasArg(OPT_cl_fast_relaxed_math)); 422 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 423 Args.hasArg(OPT_cl_finite_math_only)|| 424 Args.hasArg(OPT_cl_fast_relaxed_math)); 425 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 426 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 427 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 428 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 429 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 430 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 431 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 432 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 433 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 434 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 435 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 436 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 437 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 438 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 439 Args.hasArg(OPT_cl_fast_relaxed_math); 440 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 441 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 442 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 443 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 444 445 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 446 OPT_fno_function_sections, false); 447 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 448 OPT_fno_data_sections, false); 449 450 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 451 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 452 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 453 454 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 455 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 456 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 457 458 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 459 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 460 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 461 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 462 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 463 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 464 Opts.CoverageNoFunctionNamesInData = 465 Args.hasArg(OPT_coverage_no_function_names_in_data); 466 if (Args.hasArg(OPT_coverage_version_EQ)) { 467 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 468 if (CoverageVersion.size() != 4) { 469 Diags.Report(diag::err_drv_invalid_value) 470 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 471 << CoverageVersion; 472 } else { 473 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 474 } 475 } 476 } 477 478 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 479 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 480 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 481 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 482 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 483 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 484 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 485 Opts.SanitizeMemoryTrackOrigins = 486 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 487 Opts.SanitizeUndefinedTrapOnError = 488 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 489 Opts.SSPBufferSize = 490 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 491 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 492 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 493 StringRef Val = A->getValue(); 494 unsigned StackAlignment = Opts.StackAlignment; 495 Val.getAsInteger(10, StackAlignment); 496 Opts.StackAlignment = StackAlignment; 497 } 498 499 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 500 StringRef Name = A->getValue(); 501 unsigned Method = llvm::StringSwitch<unsigned>(Name) 502 .Case("legacy", CodeGenOptions::Legacy) 503 .Case("non-legacy", CodeGenOptions::NonLegacy) 504 .Case("mixed", CodeGenOptions::Mixed) 505 .Default(~0U); 506 if (Method == ~0U) { 507 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 508 Success = false; 509 } else { 510 Opts.setObjCDispatchMethod( 511 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 512 } 513 } 514 515 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 516 StringRef Name = A->getValue(); 517 unsigned Model = llvm::StringSwitch<unsigned>(Name) 518 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 519 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 520 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 521 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 522 .Default(~0U); 523 if (Model == ~0U) { 524 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 525 Success = false; 526 } else { 527 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 528 } 529 } 530 531 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 532 StringRef Val = A->getValue(); 533 if (Val == "fast") 534 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 535 else if (Val == "on") 536 Opts.setFPContractMode(CodeGenOptions::FPC_On); 537 else if (Val == "off") 538 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 539 else 540 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 541 } 542 543 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 544 if (A->getOption().matches(OPT_fpcc_struct_return)) { 545 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 546 } else { 547 assert(A->getOption().matches(OPT_freg_struct_return)); 548 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 549 } 550 } 551 552 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 553 bool NeedLocTracking = false; 554 555 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 556 Opts.OptimizationRemarkPattern = 557 GenerateOptimizationRemarkRegex(Diags, Args, A); 558 NeedLocTracking = true; 559 } 560 561 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 562 Opts.OptimizationRemarkMissedPattern = 563 GenerateOptimizationRemarkRegex(Diags, Args, A); 564 NeedLocTracking = true; 565 } 566 567 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 568 Opts.OptimizationRemarkAnalysisPattern = 569 GenerateOptimizationRemarkRegex(Diags, Args, A); 570 NeedLocTracking = true; 571 } 572 573 // If the user requested one of the flags in the -Rpass family, make sure 574 // that the backend tracks source location information. 575 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 576 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 577 578 return Success; 579 } 580 581 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 582 ArgList &Args) { 583 using namespace options; 584 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 585 Opts.Targets = Args.getAllArgValues(OPT_MT); 586 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 587 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 588 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 589 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 590 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 591 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 592 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 593 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 594 Opts.ModuleDependencyOutputDir = 595 Args.getLastArgValue(OPT_module_dependency_dir); 596 } 597 598 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 599 DiagnosticsEngine *Diags) { 600 using namespace options; 601 bool Success = true; 602 603 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 604 Opts.DiagnosticSerializationFile = 605 Args.getLastArgValue(OPT_diagnostic_serialized_file); 606 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 607 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 608 Opts.Pedantic = Args.hasArg(OPT_pedantic); 609 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 610 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 611 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 612 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 613 OPT_fno_show_column, 614 /*Default=*/true); 615 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 616 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 617 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 618 619 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 620 621 // Default behavior is to not to show note include stacks. 622 Opts.ShowNoteIncludeStack = false; 623 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 624 OPT_fno_diagnostics_show_note_include_stack)) 625 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 626 Opts.ShowNoteIncludeStack = true; 627 628 StringRef ShowOverloads = 629 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 630 if (ShowOverloads == "best") 631 Opts.setShowOverloads(Ovl_Best); 632 else if (ShowOverloads == "all") 633 Opts.setShowOverloads(Ovl_All); 634 else { 635 Success = false; 636 if (Diags) 637 Diags->Report(diag::err_drv_invalid_value) 638 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 639 << ShowOverloads; 640 } 641 642 StringRef ShowCategory = 643 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 644 if (ShowCategory == "none") 645 Opts.ShowCategories = 0; 646 else if (ShowCategory == "id") 647 Opts.ShowCategories = 1; 648 else if (ShowCategory == "name") 649 Opts.ShowCategories = 2; 650 else { 651 Success = false; 652 if (Diags) 653 Diags->Report(diag::err_drv_invalid_value) 654 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 655 << ShowCategory; 656 } 657 658 StringRef Format = 659 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 660 if (Format == "clang") 661 Opts.setFormat(DiagnosticOptions::Clang); 662 else if (Format == "msvc") 663 Opts.setFormat(DiagnosticOptions::Msvc); 664 else if (Format == "msvc-fallback") { 665 Opts.setFormat(DiagnosticOptions::Msvc); 666 Opts.CLFallbackMode = true; 667 } else if (Format == "vi") 668 Opts.setFormat(DiagnosticOptions::Vi); 669 else { 670 Success = false; 671 if (Diags) 672 Diags->Report(diag::err_drv_invalid_value) 673 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 674 << Format; 675 } 676 677 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 678 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 679 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 680 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 681 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 682 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 683 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 684 Opts.MacroBacktraceLimit = 685 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 686 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 687 Opts.TemplateBacktraceLimit = getLastArgIntValue( 688 Args, OPT_ftemplate_backtrace_limit, 689 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 690 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 691 Args, OPT_fconstexpr_backtrace_limit, 692 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 693 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 694 DiagnosticOptions::DefaultTabStop, Diags); 695 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 696 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 697 if (Diags) 698 Diags->Report(diag::warn_ignoring_ftabstop_value) 699 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 700 } 701 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 702 addWarningArgs(Args, Opts.Warnings); 703 704 return Success; 705 } 706 707 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 708 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 709 } 710 711 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 712 DiagnosticsEngine &Diags) { 713 using namespace options; 714 Opts.ProgramAction = frontend::ParseSyntaxOnly; 715 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 716 switch (A->getOption().getID()) { 717 default: 718 llvm_unreachable("Invalid option in group!"); 719 case OPT_ast_list: 720 Opts.ProgramAction = frontend::ASTDeclList; break; 721 case OPT_ast_dump: 722 Opts.ProgramAction = frontend::ASTDump; break; 723 case OPT_ast_print: 724 Opts.ProgramAction = frontend::ASTPrint; break; 725 case OPT_ast_view: 726 Opts.ProgramAction = frontend::ASTView; break; 727 case OPT_dump_raw_tokens: 728 Opts.ProgramAction = frontend::DumpRawTokens; break; 729 case OPT_dump_tokens: 730 Opts.ProgramAction = frontend::DumpTokens; break; 731 case OPT_S: 732 Opts.ProgramAction = frontend::EmitAssembly; break; 733 case OPT_emit_llvm_bc: 734 Opts.ProgramAction = frontend::EmitBC; break; 735 case OPT_emit_html: 736 Opts.ProgramAction = frontend::EmitHTML; break; 737 case OPT_emit_llvm: 738 Opts.ProgramAction = frontend::EmitLLVM; break; 739 case OPT_emit_llvm_only: 740 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 741 case OPT_emit_codegen_only: 742 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 743 case OPT_emit_obj: 744 Opts.ProgramAction = frontend::EmitObj; break; 745 case OPT_fixit_EQ: 746 Opts.FixItSuffix = A->getValue(); 747 // fall-through! 748 case OPT_fixit: 749 Opts.ProgramAction = frontend::FixIt; break; 750 case OPT_emit_module: 751 Opts.ProgramAction = frontend::GenerateModule; break; 752 case OPT_emit_pch: 753 Opts.ProgramAction = frontend::GeneratePCH; break; 754 case OPT_emit_pth: 755 Opts.ProgramAction = frontend::GeneratePTH; break; 756 case OPT_init_only: 757 Opts.ProgramAction = frontend::InitOnly; break; 758 case OPT_fsyntax_only: 759 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 760 case OPT_module_file_info: 761 Opts.ProgramAction = frontend::ModuleFileInfo; break; 762 case OPT_verify_pch: 763 Opts.ProgramAction = frontend::VerifyPCH; break; 764 case OPT_print_decl_contexts: 765 Opts.ProgramAction = frontend::PrintDeclContext; break; 766 case OPT_print_preamble: 767 Opts.ProgramAction = frontend::PrintPreamble; break; 768 case OPT_E: 769 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 770 case OPT_rewrite_macros: 771 Opts.ProgramAction = frontend::RewriteMacros; break; 772 case OPT_rewrite_objc: 773 Opts.ProgramAction = frontend::RewriteObjC; break; 774 case OPT_rewrite_test: 775 Opts.ProgramAction = frontend::RewriteTest; break; 776 case OPT_analyze: 777 Opts.ProgramAction = frontend::RunAnalysis; break; 778 case OPT_migrate: 779 Opts.ProgramAction = frontend::MigrateSource; break; 780 case OPT_Eonly: 781 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 782 } 783 } 784 785 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 786 Opts.Plugins.push_back(A->getValue(0)); 787 Opts.ProgramAction = frontend::PluginAction; 788 Opts.ActionName = A->getValue(); 789 790 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 791 end = Args.filtered_end(); it != end; ++it) { 792 if ((*it)->getValue(0) == Opts.ActionName) 793 Opts.PluginArgs.push_back((*it)->getValue(1)); 794 } 795 } 796 797 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 798 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 799 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 800 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 801 end = Args.filtered_end(); it != end; ++it) { 802 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 803 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 804 } 805 } 806 807 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 808 Opts.CodeCompletionAt = 809 ParsedSourceLocation::FromString(A->getValue()); 810 if (Opts.CodeCompletionAt.FileName.empty()) 811 Diags.Report(diag::err_drv_invalid_value) 812 << A->getAsString(Args) << A->getValue(); 813 } 814 Opts.DisableFree = Args.hasArg(OPT_disable_free); 815 816 Opts.OutputFile = Args.getLastArgValue(OPT_o); 817 Opts.Plugins = Args.getAllArgValues(OPT_load); 818 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 819 Opts.ShowHelp = Args.hasArg(OPT_help); 820 Opts.ShowStats = Args.hasArg(OPT_print_stats); 821 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 822 Opts.ShowVersion = Args.hasArg(OPT_version); 823 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 824 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 825 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 826 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 827 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 828 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 829 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 830 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 831 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 832 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 833 834 Opts.CodeCompleteOpts.IncludeMacros 835 = Args.hasArg(OPT_code_completion_macros); 836 Opts.CodeCompleteOpts.IncludeCodePatterns 837 = Args.hasArg(OPT_code_completion_patterns); 838 Opts.CodeCompleteOpts.IncludeGlobals 839 = !Args.hasArg(OPT_no_code_completion_globals); 840 Opts.CodeCompleteOpts.IncludeBriefComments 841 = Args.hasArg(OPT_code_completion_brief_comments); 842 843 Opts.OverrideRecordLayoutsFile 844 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 845 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 846 OPT_arcmt_modify, 847 OPT_arcmt_migrate)) { 848 switch (A->getOption().getID()) { 849 default: 850 llvm_unreachable("missed a case"); 851 case OPT_arcmt_check: 852 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 853 break; 854 case OPT_arcmt_modify: 855 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 856 break; 857 case OPT_arcmt_migrate: 858 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 859 break; 860 } 861 } 862 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 863 Opts.ARCMTMigrateReportOut 864 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 865 Opts.ARCMTMigrateEmitARCErrors 866 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 867 868 if (Args.hasArg(OPT_objcmt_migrate_literals)) 869 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 870 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 871 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 872 if (Args.hasArg(OPT_objcmt_migrate_property)) 873 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 874 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 875 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 876 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 877 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 878 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 879 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 880 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 881 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 882 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 883 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 884 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 885 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 886 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 887 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 888 if (Args.hasArg(OPT_objcmt_atomic_property)) 889 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 890 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 891 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 892 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 893 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 894 if (Args.hasArg(OPT_objcmt_migrate_all)) 895 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 896 897 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 898 899 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 900 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 901 Diags.Report(diag::err_drv_argument_not_allowed_with) 902 << "ARC migration" << "ObjC migration"; 903 } 904 905 InputKind DashX = IK_None; 906 if (const Arg *A = Args.getLastArg(OPT_x)) { 907 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 908 .Case("c", IK_C) 909 .Case("cl", IK_OpenCL) 910 .Case("cuda", IK_CUDA) 911 .Case("c++", IK_CXX) 912 .Case("objective-c", IK_ObjC) 913 .Case("objective-c++", IK_ObjCXX) 914 .Case("cpp-output", IK_PreprocessedC) 915 .Case("assembler-with-cpp", IK_Asm) 916 .Case("c++-cpp-output", IK_PreprocessedCXX) 917 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 918 .Case("objc-cpp-output", IK_PreprocessedObjC) 919 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 920 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 921 .Case("c-header", IK_C) 922 .Case("cl-header", IK_OpenCL) 923 .Case("objective-c-header", IK_ObjC) 924 .Case("c++-header", IK_CXX) 925 .Case("objective-c++-header", IK_ObjCXX) 926 .Cases("ast", "pcm", IK_AST) 927 .Case("ir", IK_LLVM_IR) 928 .Default(IK_None); 929 if (DashX == IK_None) 930 Diags.Report(diag::err_drv_invalid_value) 931 << A->getAsString(Args) << A->getValue(); 932 } 933 934 // '-' is the default input if none is given. 935 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 936 Opts.Inputs.clear(); 937 if (Inputs.empty()) 938 Inputs.push_back("-"); 939 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 940 InputKind IK = DashX; 941 if (IK == IK_None) { 942 IK = FrontendOptions::getInputKindForExtension( 943 StringRef(Inputs[i]).rsplit('.').second); 944 // FIXME: Remove this hack. 945 if (i == 0) 946 DashX = IK; 947 } 948 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 949 } 950 951 return DashX; 952 } 953 954 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 955 void *MainAddr) { 956 SmallString<128> P(llvm::sys::fs::getMainExecutable(Argv0, MainAddr)); 957 958 if (!P.empty()) { 959 llvm::sys::path::remove_filename(P); // Remove /clang from foo/bin/clang 960 llvm::sys::path::remove_filename(P); // Remove /bin from foo/bin 961 962 // Get foo/lib/clang/<version>/include 963 llvm::sys::path::append(P, "lib", "clang", CLANG_VERSION_STRING); 964 } 965 966 return P.str(); 967 } 968 969 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 970 using namespace options; 971 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 972 Opts.Verbose = Args.hasArg(OPT_v); 973 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 974 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 975 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 976 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 977 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 978 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 979 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 980 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 981 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 982 // -fmodules implies -fmodule-maps 983 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules); 984 Opts.ModuleCachePruneInterval = 985 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 986 Opts.ModuleCachePruneAfter = 987 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 988 Opts.ModulesValidateOncePerBuildSession = 989 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 990 Opts.BuildSessionTimestamp = 991 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 992 Opts.ModulesValidateSystemHeaders = 993 Args.hasArg(OPT_fmodules_validate_system_headers); 994 995 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 996 ie = Args.filtered_end(); 997 it != ie; ++it) { 998 StringRef MacroDef = (*it)->getValue(); 999 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1000 } 1001 std::vector<std::string> ModuleMapFiles = 1002 Args.getAllArgValues(OPT_fmodule_map_file); 1003 Opts.ModuleMapFiles.insert(ModuleMapFiles.begin(), ModuleMapFiles.end()); 1004 1005 // Add -I..., -F..., and -index-header-map options in order. 1006 bool IsIndexHeaderMap = false; 1007 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 1008 OPT_index_header_map), 1009 ie = Args.filtered_end(); it != ie; ++it) { 1010 if ((*it)->getOption().matches(OPT_index_header_map)) { 1011 // -index-header-map applies to the next -I or -F. 1012 IsIndexHeaderMap = true; 1013 continue; 1014 } 1015 1016 frontend::IncludeDirGroup Group 1017 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 1018 1019 Opts.AddPath((*it)->getValue(), Group, 1020 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 1021 IsIndexHeaderMap = false; 1022 } 1023 1024 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1025 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1026 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 1027 OPT_iwithprefixbefore), 1028 ie = Args.filtered_end(); it != ie; ++it) { 1029 const Arg *A = *it; 1030 if (A->getOption().matches(OPT_iprefix)) 1031 Prefix = A->getValue(); 1032 else if (A->getOption().matches(OPT_iwithprefix)) 1033 Opts.AddPath(Prefix.str() + A->getValue(), 1034 frontend::After, false, true); 1035 else 1036 Opts.AddPath(Prefix.str() + A->getValue(), 1037 frontend::Angled, false, true); 1038 } 1039 1040 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 1041 ie = Args.filtered_end(); it != ie; ++it) 1042 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 1043 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 1044 ie = Args.filtered_end(); it != ie; ++it) 1045 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 1046 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 1047 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 1048 Opts.AddPath((*it)->getValue(), frontend::System, false, 1049 !(*it)->getOption().matches(OPT_iwithsysroot)); 1050 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 1051 ie = Args.filtered_end(); it != ie; ++it) 1052 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 1053 1054 // Add the paths for the various language specific isystem flags. 1055 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 1056 ie = Args.filtered_end(); it != ie; ++it) 1057 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 1058 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 1059 ie = Args.filtered_end(); it != ie; ++it) 1060 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 1061 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 1062 ie = Args.filtered_end(); it != ie; ++it) 1063 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 1064 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 1065 ie = Args.filtered_end(); it != ie; ++it) 1066 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 1067 1068 // Add the internal paths from a driver that detects standard include paths. 1069 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 1070 OPT_internal_externc_isystem), 1071 E = Args.filtered_end(); 1072 I != E; ++I) { 1073 frontend::IncludeDirGroup Group = frontend::System; 1074 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 1075 Group = frontend::ExternCSystem; 1076 Opts.AddPath((*I)->getValue(), Group, false, true); 1077 } 1078 1079 // Add the path prefixes which are implicitly treated as being system headers. 1080 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix, 1081 OPT_no_system_header_prefix), 1082 E = Args.filtered_end(); 1083 I != E; ++I) 1084 Opts.AddSystemHeaderPrefix( 1085 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix)); 1086 1087 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay), 1088 E = Args.filtered_end(); I != E; ++I) 1089 Opts.AddVFSOverlayFile((*I)->getValue()); 1090 } 1091 1092 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1093 LangStandard::Kind LangStd) { 1094 // Set some properties which depend solely on the input kind; it would be nice 1095 // to move these to the language standard, and have the driver resolve the 1096 // input kind + language standard. 1097 if (IK == IK_Asm) { 1098 Opts.AsmPreprocessor = 1; 1099 } else if (IK == IK_ObjC || 1100 IK == IK_ObjCXX || 1101 IK == IK_PreprocessedObjC || 1102 IK == IK_PreprocessedObjCXX) { 1103 Opts.ObjC1 = Opts.ObjC2 = 1; 1104 } 1105 1106 if (LangStd == LangStandard::lang_unspecified) { 1107 // Based on the base language, pick one. 1108 switch (IK) { 1109 case IK_None: 1110 case IK_AST: 1111 case IK_LLVM_IR: 1112 llvm_unreachable("Invalid input kind!"); 1113 case IK_OpenCL: 1114 LangStd = LangStandard::lang_opencl; 1115 break; 1116 case IK_CUDA: 1117 LangStd = LangStandard::lang_cuda; 1118 break; 1119 case IK_Asm: 1120 case IK_C: 1121 case IK_PreprocessedC: 1122 case IK_ObjC: 1123 case IK_PreprocessedObjC: 1124 LangStd = LangStandard::lang_gnu99; 1125 break; 1126 case IK_CXX: 1127 case IK_PreprocessedCXX: 1128 case IK_ObjCXX: 1129 case IK_PreprocessedObjCXX: 1130 LangStd = LangStandard::lang_gnucxx98; 1131 break; 1132 } 1133 } 1134 1135 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1136 Opts.LineComment = Std.hasLineComments(); 1137 Opts.C99 = Std.isC99(); 1138 Opts.C11 = Std.isC11(); 1139 Opts.CPlusPlus = Std.isCPlusPlus(); 1140 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1141 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 1142 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1143 Opts.Digraphs = Std.hasDigraphs(); 1144 Opts.GNUMode = Std.isGNUMode(); 1145 Opts.GNUInline = !Std.isC99(); 1146 Opts.HexFloats = Std.hasHexFloats(); 1147 Opts.ImplicitInt = Std.hasImplicitInt(); 1148 1149 // Set OpenCL Version. 1150 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1151 if (LangStd == LangStandard::lang_opencl) 1152 Opts.OpenCLVersion = 100; 1153 else if (LangStd == LangStandard::lang_opencl11) 1154 Opts.OpenCLVersion = 110; 1155 else if (LangStd == LangStandard::lang_opencl12) 1156 Opts.OpenCLVersion = 120; 1157 1158 // OpenCL has some additional defaults. 1159 if (Opts.OpenCL) { 1160 Opts.AltiVec = 0; 1161 Opts.CXXOperatorNames = 1; 1162 Opts.LaxVectorConversions = 0; 1163 Opts.DefaultFPContract = 1; 1164 Opts.NativeHalfType = 1; 1165 } 1166 1167 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA; 1168 1169 // OpenCL and C++ both have bool, true, false keywords. 1170 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1171 1172 // OpenCL has half keyword 1173 Opts.Half = Opts.OpenCL; 1174 1175 // C++ has wchar_t keyword. 1176 Opts.WChar = Opts.CPlusPlus; 1177 1178 Opts.GNUKeywords = Opts.GNUMode; 1179 Opts.CXXOperatorNames = Opts.CPlusPlus; 1180 1181 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1182 // is specified, or -std is set to a conforming mode. 1183 // Trigraphs are disabled by default in c++1z onwards. 1184 Opts.Trigraphs = !Opts.GNUMode && !Opts.CPlusPlus1z; 1185 1186 Opts.DollarIdents = !Opts.AsmPreprocessor; 1187 1188 // C++1y onwards has sized global deallocation functions. 1189 Opts.SizedDeallocation = Opts.CPlusPlus1y; 1190 } 1191 1192 /// Attempt to parse a visibility value out of the given argument. 1193 static Visibility parseVisibility(Arg *arg, ArgList &args, 1194 DiagnosticsEngine &diags) { 1195 StringRef value = arg->getValue(); 1196 if (value == "default") { 1197 return DefaultVisibility; 1198 } else if (value == "hidden") { 1199 return HiddenVisibility; 1200 } else if (value == "protected") { 1201 // FIXME: diagnose if target does not support protected visibility 1202 return ProtectedVisibility; 1203 } 1204 1205 diags.Report(diag::err_drv_invalid_value) 1206 << arg->getAsString(args) << value; 1207 return DefaultVisibility; 1208 } 1209 1210 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) { 1211 auto Arg = Args.getLastArg(OPT_fmsc_version); 1212 if (!Arg) 1213 return 0; 1214 1215 // The MSC versioning scheme involves four versioning components: 1216 // - Major 1217 // - Minor 1218 // - Build 1219 // - Patch 1220 // 1221 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value. 1222 // Additionally, the value may be provided in the form of a more readable 1223 // MM.mm.bbbbb.pp version. 1224 // 1225 // Unfortunately, due to the bit-width limitations, we cannot currently encode 1226 // the value for the patch level. 1227 1228 StringRef Value = Arg->getValue(); 1229 1230 // parse the compatible old form of _MSC_VER or the newer _MSC_FULL_VER 1231 if (Value.find('.') == StringRef::npos) { 1232 unsigned Version = 0; 1233 if (Value.getAsInteger(10, Version)) { 1234 Diags.Report(diag::err_drv_invalid_value) 1235 << Arg->getAsString(Args) << Value; 1236 return 0; 1237 } 1238 if (Version < 100) 1239 Version = Version * 100; // major -> major.minor 1240 if (Version < 100000) 1241 Version = Version * 100000; // major.minor -> major.minor.build 1242 return Version; 1243 } 1244 1245 // parse the dot-delimited component version 1246 unsigned VC[4] = {0}; 1247 SmallVector<StringRef, 4> Components; 1248 1249 Value.split(Components, ".", llvm::array_lengthof(VC)); 1250 for (unsigned CI = 0, 1251 CE = std::min(Components.size(), llvm::array_lengthof(VC)); 1252 CI < CE; ++CI) { 1253 if (Components[CI].getAsInteger(10, VC[CI])) { 1254 Diags.Report(diag::err_drv_invalid_value) 1255 << Arg->getAsString(Args) << Value; 1256 return 0; 1257 } 1258 } 1259 1260 // FIXME we cannot encode the patch level 1261 return VC[0] * 10000000 + VC[1] * 100000 + VC[2]; 1262 } 1263 1264 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1265 DiagnosticsEngine &Diags) { 1266 // FIXME: Cleanup per-file based stuff. 1267 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1268 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1269 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1270 #define LANGSTANDARD(id, name, desc, features) \ 1271 .Case(name, LangStandard::lang_##id) 1272 #include "clang/Frontend/LangStandards.def" 1273 .Default(LangStandard::lang_unspecified); 1274 if (LangStd == LangStandard::lang_unspecified) 1275 Diags.Report(diag::err_drv_invalid_value) 1276 << A->getAsString(Args) << A->getValue(); 1277 else { 1278 // Valid standard, check to make sure language and standard are 1279 // compatible. 1280 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1281 switch (IK) { 1282 case IK_C: 1283 case IK_ObjC: 1284 case IK_PreprocessedC: 1285 case IK_PreprocessedObjC: 1286 if (!(Std.isC89() || Std.isC99())) 1287 Diags.Report(diag::err_drv_argument_not_allowed_with) 1288 << A->getAsString(Args) << "C/ObjC"; 1289 break; 1290 case IK_CXX: 1291 case IK_ObjCXX: 1292 case IK_PreprocessedCXX: 1293 case IK_PreprocessedObjCXX: 1294 if (!Std.isCPlusPlus()) 1295 Diags.Report(diag::err_drv_argument_not_allowed_with) 1296 << A->getAsString(Args) << "C++/ObjC++"; 1297 break; 1298 case IK_OpenCL: 1299 if (!Std.isC99()) 1300 Diags.Report(diag::err_drv_argument_not_allowed_with) 1301 << A->getAsString(Args) << "OpenCL"; 1302 break; 1303 case IK_CUDA: 1304 if (!Std.isCPlusPlus()) 1305 Diags.Report(diag::err_drv_argument_not_allowed_with) 1306 << A->getAsString(Args) << "CUDA"; 1307 break; 1308 default: 1309 break; 1310 } 1311 } 1312 } 1313 1314 // -cl-std only applies for OpenCL language standards. 1315 // Override the -std option in this case. 1316 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1317 LangStandard::Kind OpenCLLangStd 1318 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1319 .Case("CL", LangStandard::lang_opencl) 1320 .Case("CL1.1", LangStandard::lang_opencl11) 1321 .Case("CL1.2", LangStandard::lang_opencl12) 1322 .Default(LangStandard::lang_unspecified); 1323 1324 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1325 Diags.Report(diag::err_drv_invalid_value) 1326 << A->getAsString(Args) << A->getValue(); 1327 } 1328 else 1329 LangStd = OpenCLLangStd; 1330 } 1331 1332 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1333 1334 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1335 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1336 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1337 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1338 // name, as it doesn't seem a useful distinction. 1339 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1340 Opts.GNUKeywords); 1341 1342 if (Args.hasArg(OPT_fno_operator_names)) 1343 Opts.CXXOperatorNames = 0; 1344 1345 if (Opts.ObjC1) { 1346 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1347 StringRef value = arg->getValue(); 1348 if (Opts.ObjCRuntime.tryParse(value)) 1349 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1350 } 1351 1352 if (Args.hasArg(OPT_fobjc_gc_only)) 1353 Opts.setGC(LangOptions::GCOnly); 1354 else if (Args.hasArg(OPT_fobjc_gc)) 1355 Opts.setGC(LangOptions::HybridGC); 1356 else if (Args.hasArg(OPT_fobjc_arc)) { 1357 Opts.ObjCAutoRefCount = 1; 1358 if (!Opts.ObjCRuntime.allowsARC()) 1359 Diags.Report(diag::err_arc_unsupported_on_runtime); 1360 1361 // Only set ObjCARCWeak if ARC is enabled. 1362 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1363 Opts.ObjCARCWeak = 1; 1364 else 1365 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1366 } 1367 1368 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1369 Opts.ObjCInferRelatedResultType = 0; 1370 1371 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1372 Opts.ObjCSubscriptingLegacyRuntime = 1373 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1374 } 1375 1376 if (Args.hasArg(OPT_fgnu89_inline)) 1377 Opts.GNUInline = 1; 1378 1379 if (Args.hasArg(OPT_fapple_kext)) { 1380 if (!Opts.CPlusPlus) 1381 Diags.Report(diag::warn_c_kext); 1382 else 1383 Opts.AppleKext = 1; 1384 } 1385 1386 if (Args.hasArg(OPT_print_ivar_layout)) 1387 Opts.ObjCGCBitmapPrint = 1; 1388 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1389 Opts.NoConstantCFStrings = 1; 1390 1391 if (Args.hasArg(OPT_faltivec)) 1392 Opts.AltiVec = 1; 1393 1394 if (Args.hasArg(OPT_pthread)) 1395 Opts.POSIXThreads = 1; 1396 1397 // The value-visibility mode defaults to "default". 1398 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1399 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1400 } else { 1401 Opts.setValueVisibilityMode(DefaultVisibility); 1402 } 1403 1404 // The type-visibility mode defaults to the value-visibility mode. 1405 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1406 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1407 } else { 1408 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1409 } 1410 1411 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1412 Opts.InlineVisibilityHidden = 1; 1413 1414 if (Args.hasArg(OPT_ftrapv)) { 1415 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1416 // Set the handler, if one is specified. 1417 Opts.OverflowHandler = 1418 Args.getLastArgValue(OPT_ftrapv_handler); 1419 } 1420 else if (Args.hasArg(OPT_fwrapv)) 1421 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1422 1423 if (Args.hasArg(OPT_trigraphs)) 1424 Opts.Trigraphs = 1; 1425 1426 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1427 OPT_fno_dollars_in_identifiers, 1428 Opts.DollarIdents); 1429 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1430 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1431 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1432 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1433 Opts.MSCVersion = parseMSCVersion(Args, Diags); 1434 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1435 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1436 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1437 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1438 Opts.ConstStrings); 1439 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1440 Opts.LaxVectorConversions = 0; 1441 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1442 Opts.ThreadsafeStatics = 0; 1443 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1444 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1445 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1446 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1447 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1448 1449 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1450 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1451 Opts.Blocks = Args.hasArg(OPT_fblocks); 1452 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1453 Opts.Modules = Args.hasArg(OPT_fmodules); 1454 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1455 Opts.ModulesDeclUse = 1456 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1457 Opts.ModulesSearchAll = Opts.Modules && 1458 !Args.hasArg(OPT_fno_modules_search_all) && 1459 Args.hasArg(OPT_fmodules_search_all); 1460 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1461 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1462 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1463 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1464 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1465 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1466 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1467 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1468 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1469 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation); 1470 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1471 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1472 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1473 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1474 Opts.InstantiationDepth = 1475 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1476 Opts.ArrowDepth = 1477 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1478 Opts.ConstexprCallDepth = 1479 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1480 Opts.ConstexprStepLimit = 1481 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1482 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1483 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1484 Opts.NumLargeByValueCopy = 1485 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1486 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1487 Opts.ObjCConstantStringClass = 1488 Args.getLastArgValue(OPT_fconstant_string_class); 1489 Opts.ObjCDefaultSynthProperties = 1490 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1491 Opts.EncodeExtendedBlockSig = 1492 Args.hasArg(OPT_fencode_extended_block_signature); 1493 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1494 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1495 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1496 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1497 Opts.Static = Args.hasArg(OPT_static_define); 1498 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1499 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1500 || Args.hasArg(OPT_fdump_record_layouts); 1501 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1502 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1503 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1504 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1505 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1506 Opts.MRTD = Args.hasArg(OPT_mrtd); 1507 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1508 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1509 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1510 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1511 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1512 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1513 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1514 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1515 1516 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1517 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1518 .Case("target", LangOptions::ASMM_Target) 1519 .Case("no", LangOptions::ASMM_Off) 1520 .Case("yes", LangOptions::ASMM_On) 1521 .Default(255)) { 1522 default: 1523 Diags.Report(diag::err_drv_invalid_value) 1524 << "-faddress-space-map-mangling=" << A->getValue(); 1525 break; 1526 case LangOptions::ASMM_Target: 1527 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1528 break; 1529 case LangOptions::ASMM_On: 1530 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1531 break; 1532 case LangOptions::ASMM_Off: 1533 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1534 break; 1535 } 1536 } 1537 1538 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1539 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1540 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1541 A->getValue()) 1542 .Case("single", 1543 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1544 .Case("multiple", 1545 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1546 .Case("virtual", 1547 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1548 .Default(LangOptions::PPTMK_BestCase); 1549 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1550 Diags.Report(diag::err_drv_invalid_value) 1551 << "-fms-memptr-rep=" << A->getValue(); 1552 1553 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1554 } 1555 1556 // Check if -fopenmp= is specified. 1557 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) { 1558 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue()) 1559 .Case("libiomp5", true) 1560 .Default(false); 1561 } 1562 1563 // Record whether the __DEPRECATED define was requested. 1564 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1565 OPT_fno_deprecated_macro, 1566 Opts.Deprecated); 1567 1568 // FIXME: Eliminate this dependency. 1569 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1570 OptSize = getOptimizationLevelSize(Args); 1571 Opts.Optimize = Opt != 0; 1572 Opts.OptimizeSize = OptSize != 0; 1573 1574 // This is the __NO_INLINE__ define, which just depends on things like the 1575 // optimization level and -fno-inline, not actually whether the backend has 1576 // inlining enabled. 1577 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1578 1579 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1580 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1581 1582 Opts.RetainCommentsFromSystemHeaders = 1583 Args.hasArg(OPT_fretain_comments_from_system_headers); 1584 1585 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1586 switch (SSP) { 1587 default: 1588 Diags.Report(diag::err_drv_invalid_value) 1589 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1590 break; 1591 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1592 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1593 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1594 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1595 } 1596 1597 // Parse -fsanitize= arguments. 1598 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1599 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1600 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1601 // efficiently map string values to them. Perform the mapping indirectly: 1602 // convert strings to enumerated values, then switch over the enum to set 1603 // the right bitfield value. 1604 enum Sanitizer { 1605 #define SANITIZER(NAME, ID) \ 1606 ID, 1607 #include "clang/Basic/Sanitizers.def" 1608 Unknown 1609 }; 1610 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1611 #define SANITIZER(NAME, ID) \ 1612 .Case(NAME, ID) 1613 #include "clang/Basic/Sanitizers.def" 1614 .Default(Unknown)) { 1615 #define SANITIZER(NAME, ID) \ 1616 case ID: \ 1617 Opts.Sanitize.ID = true; \ 1618 break; 1619 #include "clang/Basic/Sanitizers.def" 1620 1621 case Unknown: 1622 Diags.Report(diag::err_drv_invalid_value) 1623 << "-fsanitize=" << Sanitizers[I]; 1624 break; 1625 } 1626 } 1627 } 1628 1629 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1630 FileManager &FileMgr, 1631 DiagnosticsEngine &Diags) { 1632 using namespace options; 1633 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1634 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1635 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1636 Opts.TokenCache = A->getValue(); 1637 else 1638 Opts.TokenCache = Opts.ImplicitPTHInclude; 1639 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1640 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1641 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1642 1643 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1644 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1645 ie = Args.filtered_end(); it != ie; ++it) { 1646 const Arg *A = *it; 1647 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1648 } 1649 1650 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1651 StringRef Value(A->getValue()); 1652 size_t Comma = Value.find(','); 1653 unsigned Bytes = 0; 1654 unsigned EndOfLine = 0; 1655 1656 if (Comma == StringRef::npos || 1657 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1658 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1659 Diags.Report(diag::err_drv_preamble_format); 1660 else { 1661 Opts.PrecompiledPreambleBytes.first = Bytes; 1662 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1663 } 1664 } 1665 1666 // Add macros from the command line. 1667 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1668 ie = Args.filtered_end(); it != ie; ++it) { 1669 if ((*it)->getOption().matches(OPT_D)) 1670 Opts.addMacroDef((*it)->getValue()); 1671 else 1672 Opts.addMacroUndef((*it)->getValue()); 1673 } 1674 1675 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1676 1677 // Add the ordered list of -includes. 1678 for (arg_iterator it = Args.filtered_begin(OPT_include), 1679 ie = Args.filtered_end(); it != ie; ++it) { 1680 const Arg *A = *it; 1681 Opts.Includes.push_back(A->getValue()); 1682 } 1683 1684 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1685 ie = Args.filtered_end(); it != ie; ++it) { 1686 const Arg *A = *it; 1687 Opts.ChainedIncludes.push_back(A->getValue()); 1688 } 1689 1690 // Include 'altivec.h' if -faltivec option present 1691 if (Args.hasArg(OPT_faltivec)) 1692 Opts.Includes.push_back("altivec.h"); 1693 1694 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1695 ie = Args.filtered_end(); it != ie; ++it) { 1696 const Arg *A = *it; 1697 std::pair<StringRef,StringRef> Split = 1698 StringRef(A->getValue()).split(';'); 1699 1700 if (Split.second.empty()) { 1701 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1702 continue; 1703 } 1704 1705 Opts.addRemappedFile(Split.first, Split.second); 1706 } 1707 1708 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1709 StringRef Name = A->getValue(); 1710 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1711 .Case("libc++", ARCXX_libcxx) 1712 .Case("libstdc++", ARCXX_libstdcxx) 1713 .Case("none", ARCXX_nolib) 1714 .Default(~0U); 1715 if (Library == ~0U) 1716 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1717 else 1718 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1719 } 1720 } 1721 1722 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1723 ArgList &Args, 1724 frontend::ActionKind Action) { 1725 using namespace options; 1726 1727 switch (Action) { 1728 case frontend::ASTDeclList: 1729 case frontend::ASTDump: 1730 case frontend::ASTPrint: 1731 case frontend::ASTView: 1732 case frontend::EmitAssembly: 1733 case frontend::EmitBC: 1734 case frontend::EmitHTML: 1735 case frontend::EmitLLVM: 1736 case frontend::EmitLLVMOnly: 1737 case frontend::EmitCodeGenOnly: 1738 case frontend::EmitObj: 1739 case frontend::FixIt: 1740 case frontend::GenerateModule: 1741 case frontend::GeneratePCH: 1742 case frontend::GeneratePTH: 1743 case frontend::ParseSyntaxOnly: 1744 case frontend::ModuleFileInfo: 1745 case frontend::VerifyPCH: 1746 case frontend::PluginAction: 1747 case frontend::PrintDeclContext: 1748 case frontend::RewriteObjC: 1749 case frontend::RewriteTest: 1750 case frontend::RunAnalysis: 1751 case frontend::MigrateSource: 1752 Opts.ShowCPP = 0; 1753 break; 1754 1755 case frontend::DumpRawTokens: 1756 case frontend::DumpTokens: 1757 case frontend::InitOnly: 1758 case frontend::PrintPreamble: 1759 case frontend::PrintPreprocessedInput: 1760 case frontend::RewriteMacros: 1761 case frontend::RunPreprocessorOnly: 1762 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1763 break; 1764 } 1765 1766 Opts.ShowComments = Args.hasArg(OPT_C); 1767 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1768 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1769 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1770 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1771 } 1772 1773 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1774 using namespace options; 1775 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1776 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1777 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1778 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1779 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1780 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1781 1782 // Use the default target triple if unspecified. 1783 if (Opts.Triple.empty()) 1784 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1785 } 1786 1787 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1788 const char *const *ArgBegin, 1789 const char *const *ArgEnd, 1790 DiagnosticsEngine &Diags) { 1791 bool Success = true; 1792 1793 // Parse the arguments. 1794 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1795 const unsigned IncludedFlagsBitmask = options::CC1Option; 1796 unsigned MissingArgIndex, MissingArgCount; 1797 std::unique_ptr<InputArgList> Args( 1798 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount, 1799 IncludedFlagsBitmask)); 1800 1801 // Check for missing argument error. 1802 if (MissingArgCount) { 1803 Diags.Report(diag::err_drv_missing_argument) 1804 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1805 Success = false; 1806 } 1807 1808 // Issue errors on unknown arguments. 1809 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1810 ie = Args->filtered_end(); it != ie; ++it) { 1811 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1812 Success = false; 1813 } 1814 1815 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1816 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1817 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1818 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1819 && Success; 1820 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1821 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1822 // FIXME: We shouldn't have to pass the DashX option around here 1823 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1824 ParseTargetArgs(Res.getTargetOpts(), *Args); 1825 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags, 1826 Res.getTargetOpts()) && Success; 1827 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1828 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1829 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1830 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1831 Res.getLangOpts()->ObjCExceptions = 1; 1832 } 1833 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1834 // PCH file and find the original header name. Remove the need to do that in 1835 // ParsePreprocessorArgs and remove the FileManager 1836 // parameters from the function and the "FileManager.h" #include. 1837 FileManager FileMgr(Res.getFileSystemOpts()); 1838 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1839 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1840 Res.getFrontendOpts().ProgramAction); 1841 return Success; 1842 } 1843 1844 namespace { 1845 1846 class ModuleSignature { 1847 SmallVector<uint64_t, 16> Data; 1848 unsigned CurBit; 1849 uint64_t CurValue; 1850 1851 public: 1852 ModuleSignature() : CurBit(0), CurValue(0) { } 1853 1854 void add(uint64_t Value, unsigned Bits); 1855 void add(StringRef Value); 1856 void flush(); 1857 1858 llvm::APInt getAsInteger() const; 1859 }; 1860 } 1861 1862 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1863 CurValue |= Value << CurBit; 1864 if (CurBit + NumBits < 64) { 1865 CurBit += NumBits; 1866 return; 1867 } 1868 1869 // Add the current word. 1870 Data.push_back(CurValue); 1871 1872 if (CurBit) 1873 CurValue = Value >> (64-CurBit); 1874 else 1875 CurValue = 0; 1876 CurBit = (CurBit+NumBits) & 63; 1877 } 1878 1879 void ModuleSignature::flush() { 1880 if (CurBit == 0) 1881 return; 1882 1883 Data.push_back(CurValue); 1884 CurBit = 0; 1885 CurValue = 0; 1886 } 1887 1888 void ModuleSignature::add(StringRef Value) { 1889 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1890 add(*I, 8); 1891 } 1892 1893 llvm::APInt ModuleSignature::getAsInteger() const { 1894 return llvm::APInt(Data.size() * 64, Data); 1895 } 1896 1897 std::string CompilerInvocation::getModuleHash() const { 1898 // Note: For QoI reasons, the things we use as a hash here should all be 1899 // dumped via the -module-info flag. 1900 using llvm::hash_code; 1901 using llvm::hash_value; 1902 using llvm::hash_combine; 1903 1904 // Start the signature with the compiler version. 1905 // FIXME: We'd rather use something more cryptographically sound than 1906 // CityHash, but this will do for now. 1907 hash_code code = hash_value(getClangFullRepositoryVersion()); 1908 1909 // Extend the signature with the language options 1910 #define LANGOPT(Name, Bits, Default, Description) \ 1911 code = hash_combine(code, LangOpts->Name); 1912 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1913 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1914 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1915 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1916 #include "clang/Basic/LangOptions.def" 1917 1918 // Extend the signature with the target options. 1919 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1920 TargetOpts->ABI); 1921 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1922 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1923 1924 // Extend the signature with preprocessor options. 1925 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1926 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1927 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1928 1929 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1930 I = getPreprocessorOpts().Macros.begin(), 1931 IEnd = getPreprocessorOpts().Macros.end(); 1932 I != IEnd; ++I) { 1933 // If we're supposed to ignore this macro for the purposes of modules, 1934 // don't put it into the hash. 1935 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1936 // Check whether we're ignoring this macro. 1937 StringRef MacroDef = I->first; 1938 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1939 continue; 1940 } 1941 1942 code = hash_combine(code, I->first, I->second); 1943 } 1944 1945 // Extend the signature with the sysroot. 1946 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1947 hsOpts.UseStandardSystemIncludes, 1948 hsOpts.UseStandardCXXIncludes, 1949 hsOpts.UseLibcxx); 1950 code = hash_combine(code, hsOpts.ResourceDir); 1951 1952 // Extend the signature with the user build path. 1953 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 1954 1955 // Darwin-specific hack: if we have a sysroot, use the contents and 1956 // modification time of 1957 // $sysroot/System/Library/CoreServices/SystemVersion.plist 1958 // as part of the module hash. 1959 if (!hsOpts.Sysroot.empty()) { 1960 SmallString<128> systemVersionFile; 1961 systemVersionFile += hsOpts.Sysroot; 1962 llvm::sys::path::append(systemVersionFile, "System"); 1963 llvm::sys::path::append(systemVersionFile, "Library"); 1964 llvm::sys::path::append(systemVersionFile, "CoreServices"); 1965 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 1966 1967 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 1968 llvm::MemoryBuffer::getFile(systemVersionFile.str()); 1969 if (buffer) { 1970 code = hash_combine(code, buffer.get()->getBuffer()); 1971 1972 struct stat statBuf; 1973 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 1974 code = hash_combine(code, statBuf.st_mtime); 1975 } 1976 } 1977 1978 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1979 } 1980 1981 namespace clang { 1982 1983 template<typename IntTy> 1984 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 1985 IntTy Default, 1986 DiagnosticsEngine *Diags) { 1987 IntTy Res = Default; 1988 if (Arg *A = Args.getLastArg(Id)) { 1989 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 1990 if (Diags) 1991 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 1992 << A->getValue(); 1993 } 1994 } 1995 return Res; 1996 } 1997 1998 1999 // Declared in clang/Frontend/Utils.h. 2000 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 2001 DiagnosticsEngine *Diags) { 2002 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 2003 } 2004 2005 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2006 uint64_t Default, 2007 DiagnosticsEngine *Diags) { 2008 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2009 } 2010 2011 void BuryPointer(const void *Ptr) { 2012 // This function may be called only a small fixed amount of times per each 2013 // invocation, otherwise we do actually have a leak which we want to report. 2014 // If this function is called more than kGraveYardMaxSize times, the pointers 2015 // will not be properly buried and a leak detector will report a leak, which 2016 // is what we want in such case. 2017 static const size_t kGraveYardMaxSize = 16; 2018 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2019 static std::atomic<unsigned> GraveYardSize; 2020 unsigned Idx = GraveYardSize++; 2021 if (Idx >= kGraveYardMaxSize) 2022 return; 2023 GraveYard[Idx] = Ptr; 2024 } 2025 2026 IntrusiveRefCntPtr<vfs::FileSystem> 2027 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2028 DiagnosticsEngine &Diags) { 2029 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2030 return vfs::getRealFileSystem(); 2031 2032 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2033 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2034 // earlier vfs files are on the bottom 2035 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2036 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2037 llvm::MemoryBuffer::getFile(File); 2038 if (!Buffer) { 2039 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2040 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2041 } 2042 2043 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2044 vfs::getVFSFromYAML(Buffer->release(), /*DiagHandler*/ nullptr); 2045 if (!FS.get()) { 2046 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2047 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2048 } 2049 Overlay->pushOverlay(FS); 2050 } 2051 return Overlay; 2052 } 2053 } // end namespace clang 2054
