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); 553 554 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) 555 Opts.OptimizationRemarkPattern = 556 GenerateOptimizationRemarkRegex(Diags, Args, A); 557 558 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) 559 Opts.OptimizationRemarkMissedPattern = 560 GenerateOptimizationRemarkRegex(Diags, Args, A); 561 562 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) 563 Opts.OptimizationRemarkAnalysisPattern = 564 GenerateOptimizationRemarkRegex(Diags, Args, A); 565 566 return Success; 567 } 568 569 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 570 ArgList &Args) { 571 using namespace options; 572 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 573 Opts.Targets = Args.getAllArgValues(OPT_MT); 574 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 575 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 576 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 577 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 578 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 579 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 580 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 581 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 582 Opts.ModuleDependencyOutputDir = 583 Args.getLastArgValue(OPT_module_dependency_dir); 584 } 585 586 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 587 DiagnosticsEngine *Diags) { 588 using namespace options; 589 bool Success = true; 590 591 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 592 Opts.DiagnosticSerializationFile = 593 Args.getLastArgValue(OPT_diagnostic_serialized_file); 594 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 595 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 596 Opts.Pedantic = Args.hasArg(OPT_pedantic); 597 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 598 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 599 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 600 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 601 OPT_fno_show_column, 602 /*Default=*/true); 603 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 604 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 605 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 606 607 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 608 609 // Default behavior is to not to show note include stacks. 610 Opts.ShowNoteIncludeStack = false; 611 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 612 OPT_fno_diagnostics_show_note_include_stack)) 613 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 614 Opts.ShowNoteIncludeStack = true; 615 616 StringRef ShowOverloads = 617 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 618 if (ShowOverloads == "best") 619 Opts.setShowOverloads(Ovl_Best); 620 else if (ShowOverloads == "all") 621 Opts.setShowOverloads(Ovl_All); 622 else { 623 Success = false; 624 if (Diags) 625 Diags->Report(diag::err_drv_invalid_value) 626 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 627 << ShowOverloads; 628 } 629 630 StringRef ShowCategory = 631 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 632 if (ShowCategory == "none") 633 Opts.ShowCategories = 0; 634 else if (ShowCategory == "id") 635 Opts.ShowCategories = 1; 636 else if (ShowCategory == "name") 637 Opts.ShowCategories = 2; 638 else { 639 Success = false; 640 if (Diags) 641 Diags->Report(diag::err_drv_invalid_value) 642 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 643 << ShowCategory; 644 } 645 646 StringRef Format = 647 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 648 if (Format == "clang") 649 Opts.setFormat(DiagnosticOptions::Clang); 650 else if (Format == "msvc") 651 Opts.setFormat(DiagnosticOptions::Msvc); 652 else if (Format == "msvc-fallback") { 653 Opts.setFormat(DiagnosticOptions::Msvc); 654 Opts.CLFallbackMode = true; 655 } else if (Format == "vi") 656 Opts.setFormat(DiagnosticOptions::Vi); 657 else { 658 Success = false; 659 if (Diags) 660 Diags->Report(diag::err_drv_invalid_value) 661 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 662 << Format; 663 } 664 665 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 666 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 667 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 668 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 669 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 670 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 671 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 672 Opts.MacroBacktraceLimit = 673 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 674 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 675 Opts.TemplateBacktraceLimit = getLastArgIntValue( 676 Args, OPT_ftemplate_backtrace_limit, 677 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 678 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 679 Args, OPT_fconstexpr_backtrace_limit, 680 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 681 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 682 DiagnosticOptions::DefaultTabStop, Diags); 683 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 684 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 685 if (Diags) 686 Diags->Report(diag::warn_ignoring_ftabstop_value) 687 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 688 } 689 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 690 addWarningArgs(Args, Opts.Warnings); 691 692 return Success; 693 } 694 695 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 696 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 697 } 698 699 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 700 DiagnosticsEngine &Diags) { 701 using namespace options; 702 Opts.ProgramAction = frontend::ParseSyntaxOnly; 703 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 704 switch (A->getOption().getID()) { 705 default: 706 llvm_unreachable("Invalid option in group!"); 707 case OPT_ast_list: 708 Opts.ProgramAction = frontend::ASTDeclList; break; 709 case OPT_ast_dump: 710 Opts.ProgramAction = frontend::ASTDump; break; 711 case OPT_ast_print: 712 Opts.ProgramAction = frontend::ASTPrint; break; 713 case OPT_ast_view: 714 Opts.ProgramAction = frontend::ASTView; break; 715 case OPT_dump_raw_tokens: 716 Opts.ProgramAction = frontend::DumpRawTokens; break; 717 case OPT_dump_tokens: 718 Opts.ProgramAction = frontend::DumpTokens; break; 719 case OPT_S: 720 Opts.ProgramAction = frontend::EmitAssembly; break; 721 case OPT_emit_llvm_bc: 722 Opts.ProgramAction = frontend::EmitBC; break; 723 case OPT_emit_html: 724 Opts.ProgramAction = frontend::EmitHTML; break; 725 case OPT_emit_llvm: 726 Opts.ProgramAction = frontend::EmitLLVM; break; 727 case OPT_emit_llvm_only: 728 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 729 case OPT_emit_codegen_only: 730 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 731 case OPT_emit_obj: 732 Opts.ProgramAction = frontend::EmitObj; break; 733 case OPT_fixit_EQ: 734 Opts.FixItSuffix = A->getValue(); 735 // fall-through! 736 case OPT_fixit: 737 Opts.ProgramAction = frontend::FixIt; break; 738 case OPT_emit_module: 739 Opts.ProgramAction = frontend::GenerateModule; break; 740 case OPT_emit_pch: 741 Opts.ProgramAction = frontend::GeneratePCH; break; 742 case OPT_emit_pth: 743 Opts.ProgramAction = frontend::GeneratePTH; break; 744 case OPT_init_only: 745 Opts.ProgramAction = frontend::InitOnly; break; 746 case OPT_fsyntax_only: 747 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 748 case OPT_module_file_info: 749 Opts.ProgramAction = frontend::ModuleFileInfo; break; 750 case OPT_verify_pch: 751 Opts.ProgramAction = frontend::VerifyPCH; break; 752 case OPT_print_decl_contexts: 753 Opts.ProgramAction = frontend::PrintDeclContext; break; 754 case OPT_print_preamble: 755 Opts.ProgramAction = frontend::PrintPreamble; break; 756 case OPT_E: 757 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 758 case OPT_rewrite_macros: 759 Opts.ProgramAction = frontend::RewriteMacros; break; 760 case OPT_rewrite_objc: 761 Opts.ProgramAction = frontend::RewriteObjC; break; 762 case OPT_rewrite_test: 763 Opts.ProgramAction = frontend::RewriteTest; break; 764 case OPT_analyze: 765 Opts.ProgramAction = frontend::RunAnalysis; break; 766 case OPT_migrate: 767 Opts.ProgramAction = frontend::MigrateSource; break; 768 case OPT_Eonly: 769 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 770 } 771 } 772 773 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 774 Opts.Plugins.push_back(A->getValue(0)); 775 Opts.ProgramAction = frontend::PluginAction; 776 Opts.ActionName = A->getValue(); 777 778 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 779 end = Args.filtered_end(); it != end; ++it) { 780 if ((*it)->getValue(0) == Opts.ActionName) 781 Opts.PluginArgs.push_back((*it)->getValue(1)); 782 } 783 } 784 785 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 786 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 787 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 788 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 789 end = Args.filtered_end(); it != end; ++it) { 790 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 791 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 792 } 793 } 794 795 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 796 Opts.CodeCompletionAt = 797 ParsedSourceLocation::FromString(A->getValue()); 798 if (Opts.CodeCompletionAt.FileName.empty()) 799 Diags.Report(diag::err_drv_invalid_value) 800 << A->getAsString(Args) << A->getValue(); 801 } 802 Opts.DisableFree = Args.hasArg(OPT_disable_free); 803 804 Opts.OutputFile = Args.getLastArgValue(OPT_o); 805 Opts.Plugins = Args.getAllArgValues(OPT_load); 806 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 807 Opts.ShowHelp = Args.hasArg(OPT_help); 808 Opts.ShowStats = Args.hasArg(OPT_print_stats); 809 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 810 Opts.ShowVersion = Args.hasArg(OPT_version); 811 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 812 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 813 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 814 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 815 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 816 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 817 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 818 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 819 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 820 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 821 822 Opts.CodeCompleteOpts.IncludeMacros 823 = Args.hasArg(OPT_code_completion_macros); 824 Opts.CodeCompleteOpts.IncludeCodePatterns 825 = Args.hasArg(OPT_code_completion_patterns); 826 Opts.CodeCompleteOpts.IncludeGlobals 827 = !Args.hasArg(OPT_no_code_completion_globals); 828 Opts.CodeCompleteOpts.IncludeBriefComments 829 = Args.hasArg(OPT_code_completion_brief_comments); 830 831 Opts.OverrideRecordLayoutsFile 832 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 833 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 834 OPT_arcmt_modify, 835 OPT_arcmt_migrate)) { 836 switch (A->getOption().getID()) { 837 default: 838 llvm_unreachable("missed a case"); 839 case OPT_arcmt_check: 840 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 841 break; 842 case OPT_arcmt_modify: 843 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 844 break; 845 case OPT_arcmt_migrate: 846 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 847 break; 848 } 849 } 850 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 851 Opts.ARCMTMigrateReportOut 852 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 853 Opts.ARCMTMigrateEmitARCErrors 854 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 855 856 if (Args.hasArg(OPT_objcmt_migrate_literals)) 857 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 858 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 859 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 860 if (Args.hasArg(OPT_objcmt_migrate_property)) 861 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 862 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 863 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 864 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 865 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 866 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 867 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 868 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 869 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 870 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 871 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 872 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 873 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 874 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 875 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 876 if (Args.hasArg(OPT_objcmt_atomic_property)) 877 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 878 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 879 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 880 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 881 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 882 if (Args.hasArg(OPT_objcmt_migrate_all)) 883 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 884 885 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 886 887 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 888 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 889 Diags.Report(diag::err_drv_argument_not_allowed_with) 890 << "ARC migration" << "ObjC migration"; 891 } 892 893 InputKind DashX = IK_None; 894 if (const Arg *A = Args.getLastArg(OPT_x)) { 895 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 896 .Case("c", IK_C) 897 .Case("cl", IK_OpenCL) 898 .Case("cuda", IK_CUDA) 899 .Case("c++", IK_CXX) 900 .Case("objective-c", IK_ObjC) 901 .Case("objective-c++", IK_ObjCXX) 902 .Case("cpp-output", IK_PreprocessedC) 903 .Case("assembler-with-cpp", IK_Asm) 904 .Case("c++-cpp-output", IK_PreprocessedCXX) 905 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 906 .Case("objc-cpp-output", IK_PreprocessedObjC) 907 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 908 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 909 .Case("c-header", IK_C) 910 .Case("cl-header", IK_OpenCL) 911 .Case("objective-c-header", IK_ObjC) 912 .Case("c++-header", IK_CXX) 913 .Case("objective-c++-header", IK_ObjCXX) 914 .Cases("ast", "pcm", IK_AST) 915 .Case("ir", IK_LLVM_IR) 916 .Default(IK_None); 917 if (DashX == IK_None) 918 Diags.Report(diag::err_drv_invalid_value) 919 << A->getAsString(Args) << A->getValue(); 920 } 921 922 // '-' is the default input if none is given. 923 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 924 Opts.Inputs.clear(); 925 if (Inputs.empty()) 926 Inputs.push_back("-"); 927 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 928 InputKind IK = DashX; 929 if (IK == IK_None) { 930 IK = FrontendOptions::getInputKindForExtension( 931 StringRef(Inputs[i]).rsplit('.').second); 932 // FIXME: Remove this hack. 933 if (i == 0) 934 DashX = IK; 935 } 936 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 937 } 938 939 return DashX; 940 } 941 942 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 943 void *MainAddr) { 944 SmallString<128> P(llvm::sys::fs::getMainExecutable(Argv0, MainAddr)); 945 946 if (!P.empty()) { 947 llvm::sys::path::remove_filename(P); // Remove /clang from foo/bin/clang 948 llvm::sys::path::remove_filename(P); // Remove /bin from foo/bin 949 950 // Get foo/lib/clang/<version>/include 951 llvm::sys::path::append(P, "lib", "clang", CLANG_VERSION_STRING); 952 } 953 954 return P.str(); 955 } 956 957 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 958 using namespace options; 959 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 960 Opts.Verbose = Args.hasArg(OPT_v); 961 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 962 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 963 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 964 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 965 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 966 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 967 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 968 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 969 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 970 // -fmodules implies -fmodule-maps 971 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules); 972 Opts.ModuleCachePruneInterval = 973 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 974 Opts.ModuleCachePruneAfter = 975 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 976 Opts.ModulesValidateOncePerBuildSession = 977 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 978 Opts.BuildSessionTimestamp = 979 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 980 Opts.ModulesValidateSystemHeaders = 981 Args.hasArg(OPT_fmodules_validate_system_headers); 982 983 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 984 ie = Args.filtered_end(); 985 it != ie; ++it) { 986 StringRef MacroDef = (*it)->getValue(); 987 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 988 } 989 std::vector<std::string> ModuleMapFiles = 990 Args.getAllArgValues(OPT_fmodule_map_file); 991 Opts.ModuleMapFiles.insert(ModuleMapFiles.begin(), ModuleMapFiles.end()); 992 993 // Add -I..., -F..., and -index-header-map options in order. 994 bool IsIndexHeaderMap = false; 995 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 996 OPT_index_header_map), 997 ie = Args.filtered_end(); it != ie; ++it) { 998 if ((*it)->getOption().matches(OPT_index_header_map)) { 999 // -index-header-map applies to the next -I or -F. 1000 IsIndexHeaderMap = true; 1001 continue; 1002 } 1003 1004 frontend::IncludeDirGroup Group 1005 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 1006 1007 Opts.AddPath((*it)->getValue(), Group, 1008 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 1009 IsIndexHeaderMap = false; 1010 } 1011 1012 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1013 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1014 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 1015 OPT_iwithprefixbefore), 1016 ie = Args.filtered_end(); it != ie; ++it) { 1017 const Arg *A = *it; 1018 if (A->getOption().matches(OPT_iprefix)) 1019 Prefix = A->getValue(); 1020 else if (A->getOption().matches(OPT_iwithprefix)) 1021 Opts.AddPath(Prefix.str() + A->getValue(), 1022 frontend::After, false, true); 1023 else 1024 Opts.AddPath(Prefix.str() + A->getValue(), 1025 frontend::Angled, false, true); 1026 } 1027 1028 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 1029 ie = Args.filtered_end(); it != ie; ++it) 1030 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 1031 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 1032 ie = Args.filtered_end(); it != ie; ++it) 1033 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 1034 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 1035 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 1036 Opts.AddPath((*it)->getValue(), frontend::System, false, 1037 !(*it)->getOption().matches(OPT_iwithsysroot)); 1038 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 1039 ie = Args.filtered_end(); it != ie; ++it) 1040 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 1041 1042 // Add the paths for the various language specific isystem flags. 1043 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 1044 ie = Args.filtered_end(); it != ie; ++it) 1045 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 1046 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 1047 ie = Args.filtered_end(); it != ie; ++it) 1048 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 1049 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 1050 ie = Args.filtered_end(); it != ie; ++it) 1051 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 1052 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 1053 ie = Args.filtered_end(); it != ie; ++it) 1054 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 1055 1056 // Add the internal paths from a driver that detects standard include paths. 1057 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 1058 OPT_internal_externc_isystem), 1059 E = Args.filtered_end(); 1060 I != E; ++I) { 1061 frontend::IncludeDirGroup Group = frontend::System; 1062 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 1063 Group = frontend::ExternCSystem; 1064 Opts.AddPath((*I)->getValue(), Group, false, true); 1065 } 1066 1067 // Add the path prefixes which are implicitly treated as being system headers. 1068 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix, 1069 OPT_no_system_header_prefix), 1070 E = Args.filtered_end(); 1071 I != E; ++I) 1072 Opts.AddSystemHeaderPrefix( 1073 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix)); 1074 1075 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay), 1076 E = Args.filtered_end(); I != E; ++I) 1077 Opts.AddVFSOverlayFile((*I)->getValue()); 1078 } 1079 1080 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1081 LangStandard::Kind LangStd) { 1082 // Set some properties which depend solely on the input kind; it would be nice 1083 // to move these to the language standard, and have the driver resolve the 1084 // input kind + language standard. 1085 if (IK == IK_Asm) { 1086 Opts.AsmPreprocessor = 1; 1087 } else if (IK == IK_ObjC || 1088 IK == IK_ObjCXX || 1089 IK == IK_PreprocessedObjC || 1090 IK == IK_PreprocessedObjCXX) { 1091 Opts.ObjC1 = Opts.ObjC2 = 1; 1092 } 1093 1094 if (LangStd == LangStandard::lang_unspecified) { 1095 // Based on the base language, pick one. 1096 switch (IK) { 1097 case IK_None: 1098 case IK_AST: 1099 case IK_LLVM_IR: 1100 llvm_unreachable("Invalid input kind!"); 1101 case IK_OpenCL: 1102 LangStd = LangStandard::lang_opencl; 1103 break; 1104 case IK_CUDA: 1105 LangStd = LangStandard::lang_cuda; 1106 break; 1107 case IK_Asm: 1108 case IK_C: 1109 case IK_PreprocessedC: 1110 case IK_ObjC: 1111 case IK_PreprocessedObjC: 1112 LangStd = LangStandard::lang_gnu99; 1113 break; 1114 case IK_CXX: 1115 case IK_PreprocessedCXX: 1116 case IK_ObjCXX: 1117 case IK_PreprocessedObjCXX: 1118 LangStd = LangStandard::lang_gnucxx98; 1119 break; 1120 } 1121 } 1122 1123 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1124 Opts.LineComment = Std.hasLineComments(); 1125 Opts.C99 = Std.isC99(); 1126 Opts.C11 = Std.isC11(); 1127 Opts.CPlusPlus = Std.isCPlusPlus(); 1128 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1129 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 1130 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1131 Opts.Digraphs = Std.hasDigraphs(); 1132 Opts.GNUMode = Std.isGNUMode(); 1133 Opts.GNUInline = !Std.isC99(); 1134 Opts.HexFloats = Std.hasHexFloats(); 1135 Opts.ImplicitInt = Std.hasImplicitInt(); 1136 1137 // Set OpenCL Version. 1138 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1139 if (LangStd == LangStandard::lang_opencl) 1140 Opts.OpenCLVersion = 100; 1141 else if (LangStd == LangStandard::lang_opencl11) 1142 Opts.OpenCLVersion = 110; 1143 else if (LangStd == LangStandard::lang_opencl12) 1144 Opts.OpenCLVersion = 120; 1145 1146 // OpenCL has some additional defaults. 1147 if (Opts.OpenCL) { 1148 Opts.AltiVec = 0; 1149 Opts.CXXOperatorNames = 1; 1150 Opts.LaxVectorConversions = 0; 1151 Opts.DefaultFPContract = 1; 1152 Opts.NativeHalfType = 1; 1153 } 1154 1155 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA; 1156 1157 // OpenCL and C++ both have bool, true, false keywords. 1158 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1159 1160 // OpenCL has half keyword 1161 Opts.Half = Opts.OpenCL; 1162 1163 // C++ has wchar_t keyword. 1164 Opts.WChar = Opts.CPlusPlus; 1165 1166 Opts.GNUKeywords = Opts.GNUMode; 1167 Opts.CXXOperatorNames = Opts.CPlusPlus; 1168 1169 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1170 // is specified, or -std is set to a conforming mode. 1171 // Trigraphs are disabled by default in c++1z onwards. 1172 Opts.Trigraphs = !Opts.GNUMode && !Opts.CPlusPlus1z; 1173 1174 Opts.DollarIdents = !Opts.AsmPreprocessor; 1175 1176 // C++1y onwards has sized global deallocation functions. 1177 Opts.SizedDeallocation = Opts.CPlusPlus1y; 1178 } 1179 1180 /// Attempt to parse a visibility value out of the given argument. 1181 static Visibility parseVisibility(Arg *arg, ArgList &args, 1182 DiagnosticsEngine &diags) { 1183 StringRef value = arg->getValue(); 1184 if (value == "default") { 1185 return DefaultVisibility; 1186 } else if (value == "hidden") { 1187 return HiddenVisibility; 1188 } else if (value == "protected") { 1189 // FIXME: diagnose if target does not support protected visibility 1190 return ProtectedVisibility; 1191 } 1192 1193 diags.Report(diag::err_drv_invalid_value) 1194 << arg->getAsString(args) << value; 1195 return DefaultVisibility; 1196 } 1197 1198 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) { 1199 auto Arg = Args.getLastArg(OPT_fmsc_version); 1200 if (!Arg) 1201 return 0; 1202 1203 // The MSC versioning scheme involves four versioning components: 1204 // - Major 1205 // - Minor 1206 // - Build 1207 // - Patch 1208 // 1209 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value. 1210 // Additionally, the value may be provided in the form of a more readable 1211 // MM.mm.bbbbb.pp version. 1212 // 1213 // Unfortunately, due to the bit-width limitations, we cannot currently encode 1214 // the value for the patch level. 1215 1216 StringRef Value = Arg->getValue(); 1217 1218 // parse the compatible old form of _MSC_VER or the newer _MSC_FULL_VER 1219 if (Value.find('.') == StringRef::npos) { 1220 unsigned Version = 0; 1221 if (Value.getAsInteger(10, Version)) { 1222 Diags.Report(diag::err_drv_invalid_value) 1223 << Arg->getAsString(Args) << Value; 1224 return 0; 1225 } 1226 if (Version < 100) 1227 Version = Version * 100; // major -> major.minor 1228 if (Version < 100000) 1229 Version = Version * 100000; // major.minor -> major.minor.build 1230 return Version; 1231 } 1232 1233 // parse the dot-delimited component version 1234 unsigned VC[4] = {0}; 1235 SmallVector<StringRef, 4> Components; 1236 1237 Value.split(Components, ".", llvm::array_lengthof(VC)); 1238 for (unsigned CI = 0, 1239 CE = std::min(Components.size(), llvm::array_lengthof(VC)); 1240 CI < CE; ++CI) { 1241 if (Components[CI].getAsInteger(10, VC[CI])) { 1242 Diags.Report(diag::err_drv_invalid_value) 1243 << Arg->getAsString(Args) << Value; 1244 return 0; 1245 } 1246 } 1247 1248 // FIXME we cannot encode the patch level 1249 return VC[0] * 10000000 + VC[1] * 100000 + VC[2]; 1250 } 1251 1252 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1253 DiagnosticsEngine &Diags) { 1254 // FIXME: Cleanup per-file based stuff. 1255 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1256 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1257 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1258 #define LANGSTANDARD(id, name, desc, features) \ 1259 .Case(name, LangStandard::lang_##id) 1260 #include "clang/Frontend/LangStandards.def" 1261 .Default(LangStandard::lang_unspecified); 1262 if (LangStd == LangStandard::lang_unspecified) 1263 Diags.Report(diag::err_drv_invalid_value) 1264 << A->getAsString(Args) << A->getValue(); 1265 else { 1266 // Valid standard, check to make sure language and standard are 1267 // compatible. 1268 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1269 switch (IK) { 1270 case IK_C: 1271 case IK_ObjC: 1272 case IK_PreprocessedC: 1273 case IK_PreprocessedObjC: 1274 if (!(Std.isC89() || Std.isC99())) 1275 Diags.Report(diag::err_drv_argument_not_allowed_with) 1276 << A->getAsString(Args) << "C/ObjC"; 1277 break; 1278 case IK_CXX: 1279 case IK_ObjCXX: 1280 case IK_PreprocessedCXX: 1281 case IK_PreprocessedObjCXX: 1282 if (!Std.isCPlusPlus()) 1283 Diags.Report(diag::err_drv_argument_not_allowed_with) 1284 << A->getAsString(Args) << "C++/ObjC++"; 1285 break; 1286 case IK_OpenCL: 1287 if (!Std.isC99()) 1288 Diags.Report(diag::err_drv_argument_not_allowed_with) 1289 << A->getAsString(Args) << "OpenCL"; 1290 break; 1291 case IK_CUDA: 1292 if (!Std.isCPlusPlus()) 1293 Diags.Report(diag::err_drv_argument_not_allowed_with) 1294 << A->getAsString(Args) << "CUDA"; 1295 break; 1296 default: 1297 break; 1298 } 1299 } 1300 } 1301 1302 // -cl-std only applies for OpenCL language standards. 1303 // Override the -std option in this case. 1304 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1305 LangStandard::Kind OpenCLLangStd 1306 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1307 .Case("CL", LangStandard::lang_opencl) 1308 .Case("CL1.1", LangStandard::lang_opencl11) 1309 .Case("CL1.2", LangStandard::lang_opencl12) 1310 .Default(LangStandard::lang_unspecified); 1311 1312 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1313 Diags.Report(diag::err_drv_invalid_value) 1314 << A->getAsString(Args) << A->getValue(); 1315 } 1316 else 1317 LangStd = OpenCLLangStd; 1318 } 1319 1320 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1321 1322 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1323 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1324 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1325 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1326 // name, as it doesn't seem a useful distinction. 1327 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1328 Opts.GNUKeywords); 1329 1330 if (Args.hasArg(OPT_fno_operator_names)) 1331 Opts.CXXOperatorNames = 0; 1332 1333 if (Opts.ObjC1) { 1334 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1335 StringRef value = arg->getValue(); 1336 if (Opts.ObjCRuntime.tryParse(value)) 1337 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1338 } 1339 1340 if (Args.hasArg(OPT_fobjc_gc_only)) 1341 Opts.setGC(LangOptions::GCOnly); 1342 else if (Args.hasArg(OPT_fobjc_gc)) 1343 Opts.setGC(LangOptions::HybridGC); 1344 else if (Args.hasArg(OPT_fobjc_arc)) { 1345 Opts.ObjCAutoRefCount = 1; 1346 if (!Opts.ObjCRuntime.allowsARC()) 1347 Diags.Report(diag::err_arc_unsupported_on_runtime); 1348 1349 // Only set ObjCARCWeak if ARC is enabled. 1350 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1351 Opts.ObjCARCWeak = 1; 1352 else 1353 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1354 } 1355 1356 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1357 Opts.ObjCInferRelatedResultType = 0; 1358 1359 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1360 Opts.ObjCSubscriptingLegacyRuntime = 1361 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1362 } 1363 1364 if (Args.hasArg(OPT_fgnu89_inline)) 1365 Opts.GNUInline = 1; 1366 1367 if (Args.hasArg(OPT_fapple_kext)) { 1368 if (!Opts.CPlusPlus) 1369 Diags.Report(diag::warn_c_kext); 1370 else 1371 Opts.AppleKext = 1; 1372 } 1373 1374 if (Args.hasArg(OPT_print_ivar_layout)) 1375 Opts.ObjCGCBitmapPrint = 1; 1376 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1377 Opts.NoConstantCFStrings = 1; 1378 1379 if (Args.hasArg(OPT_faltivec)) 1380 Opts.AltiVec = 1; 1381 1382 if (Args.hasArg(OPT_pthread)) 1383 Opts.POSIXThreads = 1; 1384 1385 // The value-visibility mode defaults to "default". 1386 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1387 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1388 } else { 1389 Opts.setValueVisibilityMode(DefaultVisibility); 1390 } 1391 1392 // The type-visibility mode defaults to the value-visibility mode. 1393 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1394 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1395 } else { 1396 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1397 } 1398 1399 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1400 Opts.InlineVisibilityHidden = 1; 1401 1402 if (Args.hasArg(OPT_ftrapv)) { 1403 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1404 // Set the handler, if one is specified. 1405 Opts.OverflowHandler = 1406 Args.getLastArgValue(OPT_ftrapv_handler); 1407 } 1408 else if (Args.hasArg(OPT_fwrapv)) 1409 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1410 1411 if (Args.hasArg(OPT_trigraphs)) 1412 Opts.Trigraphs = 1; 1413 1414 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1415 OPT_fno_dollars_in_identifiers, 1416 Opts.DollarIdents); 1417 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1418 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1419 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1420 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1421 Opts.MSCVersion = parseMSCVersion(Args, Diags); 1422 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1423 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1424 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1425 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1426 Opts.ConstStrings); 1427 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1428 Opts.LaxVectorConversions = 0; 1429 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1430 Opts.ThreadsafeStatics = 0; 1431 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1432 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1433 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1434 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1435 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1436 1437 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1438 Opts.Blocks = Args.hasArg(OPT_fblocks); 1439 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1440 Opts.Modules = Args.hasArg(OPT_fmodules); 1441 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1442 Opts.ModulesDeclUse = 1443 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1444 Opts.ModulesSearchAll = Opts.Modules && 1445 !Args.hasArg(OPT_fno_modules_search_all) && 1446 Args.hasArg(OPT_fmodules_search_all); 1447 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1448 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1449 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1450 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1451 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1452 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1453 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1454 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1455 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1456 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation); 1457 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1458 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1459 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1460 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1461 Opts.InstantiationDepth = 1462 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1463 Opts.ArrowDepth = 1464 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1465 Opts.ConstexprCallDepth = 1466 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1467 Opts.ConstexprStepLimit = 1468 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1469 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1470 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1471 Opts.NumLargeByValueCopy = 1472 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1473 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1474 Opts.ObjCConstantStringClass = 1475 Args.getLastArgValue(OPT_fconstant_string_class); 1476 Opts.ObjCDefaultSynthProperties = 1477 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1478 Opts.EncodeExtendedBlockSig = 1479 Args.hasArg(OPT_fencode_extended_block_signature); 1480 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1481 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1482 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1483 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1484 Opts.Static = Args.hasArg(OPT_static_define); 1485 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1486 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1487 || Args.hasArg(OPT_fdump_record_layouts); 1488 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1489 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1490 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1491 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1492 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1493 Opts.MRTD = Args.hasArg(OPT_mrtd); 1494 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1495 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1496 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1497 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1498 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1499 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1500 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1501 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1502 1503 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1504 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1505 .Case("target", LangOptions::ASMM_Target) 1506 .Case("no", LangOptions::ASMM_Off) 1507 .Case("yes", LangOptions::ASMM_On) 1508 .Default(255)) { 1509 default: 1510 Diags.Report(diag::err_drv_invalid_value) 1511 << "-faddress-space-map-mangling=" << A->getValue(); 1512 break; 1513 case LangOptions::ASMM_Target: 1514 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1515 break; 1516 case LangOptions::ASMM_On: 1517 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1518 break; 1519 case LangOptions::ASMM_Off: 1520 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1521 break; 1522 } 1523 } 1524 1525 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1526 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1527 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1528 A->getValue()) 1529 .Case("single", 1530 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1531 .Case("multiple", 1532 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1533 .Case("virtual", 1534 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1535 .Default(LangOptions::PPTMK_BestCase); 1536 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1537 Diags.Report(diag::err_drv_invalid_value) 1538 << "-fms-memptr-rep=" << A->getValue(); 1539 1540 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1541 } 1542 1543 // Check if -fopenmp= is specified. 1544 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) { 1545 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue()) 1546 .Case("libiomp5", true) 1547 .Default(false); 1548 } 1549 1550 // Record whether the __DEPRECATED define was requested. 1551 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1552 OPT_fno_deprecated_macro, 1553 Opts.Deprecated); 1554 1555 // FIXME: Eliminate this dependency. 1556 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1557 OptSize = getOptimizationLevelSize(Args); 1558 Opts.Optimize = Opt != 0; 1559 Opts.OptimizeSize = OptSize != 0; 1560 1561 // This is the __NO_INLINE__ define, which just depends on things like the 1562 // optimization level and -fno-inline, not actually whether the backend has 1563 // inlining enabled. 1564 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1565 1566 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1567 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1568 1569 Opts.RetainCommentsFromSystemHeaders = 1570 Args.hasArg(OPT_fretain_comments_from_system_headers); 1571 1572 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1573 switch (SSP) { 1574 default: 1575 Diags.Report(diag::err_drv_invalid_value) 1576 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1577 break; 1578 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1579 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1580 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1581 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1582 } 1583 1584 // Parse -fsanitize= arguments. 1585 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1586 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1587 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1588 // efficiently map string values to them. Perform the mapping indirectly: 1589 // convert strings to enumerated values, then switch over the enum to set 1590 // the right bitfield value. 1591 enum Sanitizer { 1592 #define SANITIZER(NAME, ID) \ 1593 ID, 1594 #include "clang/Basic/Sanitizers.def" 1595 Unknown 1596 }; 1597 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1598 #define SANITIZER(NAME, ID) \ 1599 .Case(NAME, ID) 1600 #include "clang/Basic/Sanitizers.def" 1601 .Default(Unknown)) { 1602 #define SANITIZER(NAME, ID) \ 1603 case ID: \ 1604 Opts.Sanitize.ID = true; \ 1605 break; 1606 #include "clang/Basic/Sanitizers.def" 1607 1608 case Unknown: 1609 Diags.Report(diag::err_drv_invalid_value) 1610 << "-fsanitize=" << Sanitizers[I]; 1611 break; 1612 } 1613 } 1614 } 1615 1616 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1617 FileManager &FileMgr, 1618 DiagnosticsEngine &Diags) { 1619 using namespace options; 1620 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1621 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1622 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1623 Opts.TokenCache = A->getValue(); 1624 else 1625 Opts.TokenCache = Opts.ImplicitPTHInclude; 1626 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1627 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1628 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1629 1630 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1631 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1632 ie = Args.filtered_end(); it != ie; ++it) { 1633 const Arg *A = *it; 1634 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1635 } 1636 1637 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1638 StringRef Value(A->getValue()); 1639 size_t Comma = Value.find(','); 1640 unsigned Bytes = 0; 1641 unsigned EndOfLine = 0; 1642 1643 if (Comma == StringRef::npos || 1644 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1645 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1646 Diags.Report(diag::err_drv_preamble_format); 1647 else { 1648 Opts.PrecompiledPreambleBytes.first = Bytes; 1649 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1650 } 1651 } 1652 1653 // Add macros from the command line. 1654 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1655 ie = Args.filtered_end(); it != ie; ++it) { 1656 if ((*it)->getOption().matches(OPT_D)) 1657 Opts.addMacroDef((*it)->getValue()); 1658 else 1659 Opts.addMacroUndef((*it)->getValue()); 1660 } 1661 1662 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1663 1664 // Add the ordered list of -includes. 1665 for (arg_iterator it = Args.filtered_begin(OPT_include), 1666 ie = Args.filtered_end(); it != ie; ++it) { 1667 const Arg *A = *it; 1668 Opts.Includes.push_back(A->getValue()); 1669 } 1670 1671 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1672 ie = Args.filtered_end(); it != ie; ++it) { 1673 const Arg *A = *it; 1674 Opts.ChainedIncludes.push_back(A->getValue()); 1675 } 1676 1677 // Include 'altivec.h' if -faltivec option present 1678 if (Args.hasArg(OPT_faltivec)) 1679 Opts.Includes.push_back("altivec.h"); 1680 1681 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1682 ie = Args.filtered_end(); it != ie; ++it) { 1683 const Arg *A = *it; 1684 std::pair<StringRef,StringRef> Split = 1685 StringRef(A->getValue()).split(';'); 1686 1687 if (Split.second.empty()) { 1688 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1689 continue; 1690 } 1691 1692 Opts.addRemappedFile(Split.first, Split.second); 1693 } 1694 1695 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1696 StringRef Name = A->getValue(); 1697 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1698 .Case("libc++", ARCXX_libcxx) 1699 .Case("libstdc++", ARCXX_libstdcxx) 1700 .Case("none", ARCXX_nolib) 1701 .Default(~0U); 1702 if (Library == ~0U) 1703 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1704 else 1705 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1706 } 1707 } 1708 1709 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1710 ArgList &Args, 1711 frontend::ActionKind Action) { 1712 using namespace options; 1713 1714 switch (Action) { 1715 case frontend::ASTDeclList: 1716 case frontend::ASTDump: 1717 case frontend::ASTPrint: 1718 case frontend::ASTView: 1719 case frontend::EmitAssembly: 1720 case frontend::EmitBC: 1721 case frontend::EmitHTML: 1722 case frontend::EmitLLVM: 1723 case frontend::EmitLLVMOnly: 1724 case frontend::EmitCodeGenOnly: 1725 case frontend::EmitObj: 1726 case frontend::FixIt: 1727 case frontend::GenerateModule: 1728 case frontend::GeneratePCH: 1729 case frontend::GeneratePTH: 1730 case frontend::ParseSyntaxOnly: 1731 case frontend::ModuleFileInfo: 1732 case frontend::VerifyPCH: 1733 case frontend::PluginAction: 1734 case frontend::PrintDeclContext: 1735 case frontend::RewriteObjC: 1736 case frontend::RewriteTest: 1737 case frontend::RunAnalysis: 1738 case frontend::MigrateSource: 1739 Opts.ShowCPP = 0; 1740 break; 1741 1742 case frontend::DumpRawTokens: 1743 case frontend::DumpTokens: 1744 case frontend::InitOnly: 1745 case frontend::PrintPreamble: 1746 case frontend::PrintPreprocessedInput: 1747 case frontend::RewriteMacros: 1748 case frontend::RunPreprocessorOnly: 1749 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1750 break; 1751 } 1752 1753 Opts.ShowComments = Args.hasArg(OPT_C); 1754 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1755 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1756 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1757 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1758 } 1759 1760 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1761 using namespace options; 1762 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1763 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1764 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1765 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1766 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1767 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1768 1769 // Use the default target triple if unspecified. 1770 if (Opts.Triple.empty()) 1771 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1772 } 1773 1774 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1775 const char *const *ArgBegin, 1776 const char *const *ArgEnd, 1777 DiagnosticsEngine &Diags) { 1778 bool Success = true; 1779 1780 // Parse the arguments. 1781 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1782 const unsigned IncludedFlagsBitmask = options::CC1Option; 1783 unsigned MissingArgIndex, MissingArgCount; 1784 std::unique_ptr<InputArgList> Args( 1785 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount, 1786 IncludedFlagsBitmask)); 1787 1788 // Check for missing argument error. 1789 if (MissingArgCount) { 1790 Diags.Report(diag::err_drv_missing_argument) 1791 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1792 Success = false; 1793 } 1794 1795 // Issue errors on unknown arguments. 1796 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1797 ie = Args->filtered_end(); it != ie; ++it) { 1798 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1799 Success = false; 1800 } 1801 1802 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1803 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1804 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1805 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1806 && Success; 1807 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1808 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1809 // FIXME: We shouldn't have to pass the DashX option around here 1810 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1811 ParseTargetArgs(Res.getTargetOpts(), *Args); 1812 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags, 1813 Res.getTargetOpts()) && Success; 1814 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1815 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1816 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1817 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1818 Res.getLangOpts()->ObjCExceptions = 1; 1819 } 1820 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1821 // PCH file and find the original header name. Remove the need to do that in 1822 // ParsePreprocessorArgs and remove the FileManager 1823 // parameters from the function and the "FileManager.h" #include. 1824 FileManager FileMgr(Res.getFileSystemOpts()); 1825 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1826 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1827 Res.getFrontendOpts().ProgramAction); 1828 return Success; 1829 } 1830 1831 namespace { 1832 1833 class ModuleSignature { 1834 SmallVector<uint64_t, 16> Data; 1835 unsigned CurBit; 1836 uint64_t CurValue; 1837 1838 public: 1839 ModuleSignature() : CurBit(0), CurValue(0) { } 1840 1841 void add(uint64_t Value, unsigned Bits); 1842 void add(StringRef Value); 1843 void flush(); 1844 1845 llvm::APInt getAsInteger() const; 1846 }; 1847 } 1848 1849 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1850 CurValue |= Value << CurBit; 1851 if (CurBit + NumBits < 64) { 1852 CurBit += NumBits; 1853 return; 1854 } 1855 1856 // Add the current word. 1857 Data.push_back(CurValue); 1858 1859 if (CurBit) 1860 CurValue = Value >> (64-CurBit); 1861 else 1862 CurValue = 0; 1863 CurBit = (CurBit+NumBits) & 63; 1864 } 1865 1866 void ModuleSignature::flush() { 1867 if (CurBit == 0) 1868 return; 1869 1870 Data.push_back(CurValue); 1871 CurBit = 0; 1872 CurValue = 0; 1873 } 1874 1875 void ModuleSignature::add(StringRef Value) { 1876 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1877 add(*I, 8); 1878 } 1879 1880 llvm::APInt ModuleSignature::getAsInteger() const { 1881 return llvm::APInt(Data.size() * 64, Data); 1882 } 1883 1884 std::string CompilerInvocation::getModuleHash() const { 1885 // Note: For QoI reasons, the things we use as a hash here should all be 1886 // dumped via the -module-info flag. 1887 using llvm::hash_code; 1888 using llvm::hash_value; 1889 using llvm::hash_combine; 1890 1891 // Start the signature with the compiler version. 1892 // FIXME: We'd rather use something more cryptographically sound than 1893 // CityHash, but this will do for now. 1894 hash_code code = hash_value(getClangFullRepositoryVersion()); 1895 1896 // Extend the signature with the language options 1897 #define LANGOPT(Name, Bits, Default, Description) \ 1898 code = hash_combine(code, LangOpts->Name); 1899 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1900 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1901 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1902 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1903 #include "clang/Basic/LangOptions.def" 1904 1905 // Extend the signature with the target options. 1906 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1907 TargetOpts->ABI); 1908 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1909 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1910 1911 // Extend the signature with preprocessor options. 1912 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1913 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1914 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1915 1916 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1917 I = getPreprocessorOpts().Macros.begin(), 1918 IEnd = getPreprocessorOpts().Macros.end(); 1919 I != IEnd; ++I) { 1920 // If we're supposed to ignore this macro for the purposes of modules, 1921 // don't put it into the hash. 1922 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1923 // Check whether we're ignoring this macro. 1924 StringRef MacroDef = I->first; 1925 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1926 continue; 1927 } 1928 1929 code = hash_combine(code, I->first, I->second); 1930 } 1931 1932 // Extend the signature with the sysroot. 1933 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1934 hsOpts.UseStandardSystemIncludes, 1935 hsOpts.UseStandardCXXIncludes, 1936 hsOpts.UseLibcxx); 1937 code = hash_combine(code, hsOpts.ResourceDir); 1938 1939 // Extend the signature with the user build path. 1940 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 1941 1942 // Darwin-specific hack: if we have a sysroot, use the contents and 1943 // modification time of 1944 // $sysroot/System/Library/CoreServices/SystemVersion.plist 1945 // as part of the module hash. 1946 if (!hsOpts.Sysroot.empty()) { 1947 std::unique_ptr<llvm::MemoryBuffer> buffer; 1948 SmallString<128> systemVersionFile; 1949 systemVersionFile += hsOpts.Sysroot; 1950 llvm::sys::path::append(systemVersionFile, "System"); 1951 llvm::sys::path::append(systemVersionFile, "Library"); 1952 llvm::sys::path::append(systemVersionFile, "CoreServices"); 1953 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 1954 if (!llvm::MemoryBuffer::getFile(systemVersionFile.str(), buffer)) { 1955 code = hash_combine(code, buffer.get()->getBuffer()); 1956 1957 struct stat statBuf; 1958 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 1959 code = hash_combine(code, statBuf.st_mtime); 1960 } 1961 } 1962 1963 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1964 } 1965 1966 namespace clang { 1967 1968 template<typename IntTy> 1969 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 1970 IntTy Default, 1971 DiagnosticsEngine *Diags) { 1972 IntTy Res = Default; 1973 if (Arg *A = Args.getLastArg(Id)) { 1974 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 1975 if (Diags) 1976 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 1977 << A->getValue(); 1978 } 1979 } 1980 return Res; 1981 } 1982 1983 1984 // Declared in clang/Frontend/Utils.h. 1985 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 1986 DiagnosticsEngine *Diags) { 1987 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 1988 } 1989 1990 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 1991 uint64_t Default, 1992 DiagnosticsEngine *Diags) { 1993 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 1994 } 1995 1996 void BuryPointer(const void *Ptr) { 1997 // This function may be called only a small fixed amount of times per each 1998 // invocation, otherwise we do actually have a leak which we want to report. 1999 // If this function is called more than kGraveYardMaxSize times, the pointers 2000 // will not be properly buried and a leak detector will report a leak, which 2001 // is what we want in such case. 2002 static const size_t kGraveYardMaxSize = 16; 2003 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2004 static std::atomic<unsigned> GraveYardSize; 2005 unsigned Idx = GraveYardSize++; 2006 if (Idx >= kGraveYardMaxSize) 2007 return; 2008 GraveYard[Idx] = Ptr; 2009 } 2010 2011 IntrusiveRefCntPtr<vfs::FileSystem> 2012 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2013 DiagnosticsEngine &Diags) { 2014 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2015 return vfs::getRealFileSystem(); 2016 2017 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2018 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2019 // earlier vfs files are on the bottom 2020 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2021 std::unique_ptr<llvm::MemoryBuffer> Buffer; 2022 if (llvm::MemoryBuffer::getFile(File, Buffer)) { 2023 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2024 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2025 } 2026 2027 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2028 vfs::getVFSFromYAML(Buffer.release(), /*DiagHandler*/nullptr); 2029 if (!FS.getPtr()) { 2030 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2031 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2032 } 2033 Overlay->pushOverlay(FS); 2034 } 2035 return Overlay; 2036 } 2037 } // end namespace clang 2038