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 addDiagnosticArgs(ArgList &Args, OptSpecifier Group, 115 OptSpecifier GroupWithValue, 116 std::vector<std::string> &Diagnostics) { 117 for (Arg *A : Args.filtered(Group)) { 118 if (A->getOption().getKind() == Option::FlagClass) { 119 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add 120 // its name (minus the "W" or "R" at the beginning) to the warning list. 121 Diagnostics.push_back(A->getOption().getName().drop_front(1)); 122 } else if (A->getOption().matches(GroupWithValue)) { 123 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group. 124 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-")); 125 } else { 126 // Otherwise, add its value (for OPT_W_Joined and similar). 127 for (const char *Arg : A->getValues()) 128 Diagnostics.push_back(Arg); 129 } 130 } 131 } 132 133 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 134 DiagnosticsEngine &Diags) { 135 using namespace options; 136 bool Success = true; 137 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 138 StringRef Name = A->getValue(); 139 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 140 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 141 .Case(CMDFLAG, NAME##Model) 142 #include "clang/StaticAnalyzer/Core/Analyses.def" 143 .Default(NumStores); 144 if (Value == NumStores) { 145 Diags.Report(diag::err_drv_invalid_value) 146 << A->getAsString(Args) << Name; 147 Success = false; 148 } else { 149 Opts.AnalysisStoreOpt = Value; 150 } 151 } 152 153 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 154 StringRef Name = A->getValue(); 155 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 156 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 157 .Case(CMDFLAG, NAME##Model) 158 #include "clang/StaticAnalyzer/Core/Analyses.def" 159 .Default(NumConstraints); 160 if (Value == NumConstraints) { 161 Diags.Report(diag::err_drv_invalid_value) 162 << A->getAsString(Args) << Name; 163 Success = false; 164 } else { 165 Opts.AnalysisConstraintsOpt = Value; 166 } 167 } 168 169 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 170 StringRef Name = A->getValue(); 171 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 172 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 173 .Case(CMDFLAG, PD_##NAME) 174 #include "clang/StaticAnalyzer/Core/Analyses.def" 175 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 176 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 177 Diags.Report(diag::err_drv_invalid_value) 178 << A->getAsString(Args) << Name; 179 Success = false; 180 } else { 181 Opts.AnalysisDiagOpt = Value; 182 } 183 } 184 185 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 186 StringRef Name = A->getValue(); 187 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 188 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 189 .Case(CMDFLAG, NAME) 190 #include "clang/StaticAnalyzer/Core/Analyses.def" 191 .Default(NumPurgeModes); 192 if (Value == NumPurgeModes) { 193 Diags.Report(diag::err_drv_invalid_value) 194 << A->getAsString(Args) << Name; 195 Success = false; 196 } else { 197 Opts.AnalysisPurgeOpt = Value; 198 } 199 } 200 201 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 202 StringRef Name = A->getValue(); 203 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 204 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 205 .Case(CMDFLAG, NAME) 206 #include "clang/StaticAnalyzer/Core/Analyses.def" 207 .Default(NumInliningModes); 208 if (Value == NumInliningModes) { 209 Diags.Report(diag::err_drv_invalid_value) 210 << A->getAsString(Args) << Name; 211 Success = false; 212 } else { 213 Opts.InliningMode = Value; 214 } 215 } 216 217 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 218 Opts.visualizeExplodedGraphWithGraphViz = 219 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 220 Opts.visualizeExplodedGraphWithUbiGraph = 221 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 222 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 223 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 224 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 225 Opts.AnalyzeNestedBlocks = 226 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 227 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 228 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 229 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 230 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 231 Opts.maxBlockVisitOnPath = 232 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 233 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 234 Opts.InlineMaxStackDepth = 235 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 236 Opts.InlineMaxStackDepth, Diags); 237 238 Opts.CheckersControlList.clear(); 239 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 240 OPT_analyzer_disable_checker), 241 ie = Args.filtered_end(); it != ie; ++it) { 242 const Arg *A = *it; 243 A->claim(); 244 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 245 // We can have a list of comma separated checker names, e.g: 246 // '-analyzer-checker=cocoa,unix' 247 StringRef checkerList = A->getValue(); 248 SmallVector<StringRef, 4> checkers; 249 checkerList.split(checkers, ","); 250 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 251 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 252 } 253 254 // Go through the analyzer configuration options. 255 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 256 ie = Args.filtered_end(); it != ie; ++it) { 257 const Arg *A = *it; 258 A->claim(); 259 // We can have a list of comma separated config names, e.g: 260 // '-analyzer-config key1=val1,key2=val2' 261 StringRef configList = A->getValue(); 262 SmallVector<StringRef, 4> configVals; 263 configList.split(configVals, ","); 264 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 265 StringRef key, val; 266 std::tie(key, val) = configVals[i].split("="); 267 if (val.empty()) { 268 Diags.Report(SourceLocation(), 269 diag::err_analyzer_config_no_value) << configVals[i]; 270 Success = false; 271 break; 272 } 273 if (val.find('=') != StringRef::npos) { 274 Diags.Report(SourceLocation(), 275 diag::err_analyzer_config_multiple_values) 276 << configVals[i]; 277 Success = false; 278 break; 279 } 280 Opts.Config[key] = val; 281 } 282 } 283 284 return Success; 285 } 286 287 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 288 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 289 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 290 return true; 291 } 292 293 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 294 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 295 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 296 } 297 298 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) { 299 if (Arg *A = Args.getLastArg(OPT_mcode_model)) { 300 StringRef Value = A->getValue(); 301 if (Value == "small" || Value == "kernel" || Value == "medium" || 302 Value == "large") 303 return Value; 304 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value; 305 } 306 return "default"; 307 } 308 309 /// \brief Create a new Regex instance out of the string value in \p RpassArg. 310 /// It returns a pointer to the newly generated Regex instance. 311 static std::shared_ptr<llvm::Regex> 312 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args, 313 Arg *RpassArg) { 314 StringRef Val = RpassArg->getValue(); 315 std::string RegexError; 316 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val); 317 if (!Pattern->isValid(RegexError)) { 318 Diags.Report(diag::err_drv_optimization_remark_pattern) 319 << RegexError << RpassArg->getAsString(Args); 320 Pattern.reset(); 321 } 322 return Pattern; 323 } 324 325 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 326 DiagnosticsEngine &Diags, 327 const TargetOptions &TargetOpts) { 328 using namespace options; 329 bool Success = true; 330 331 Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 332 // TODO: This could be done in Driver 333 unsigned MaxOptLevel = 3; 334 if (Opts.OptimizationLevel > MaxOptLevel) { 335 // If the optimization level is not supported, fall back on the default optimization 336 Diags.Report(diag::warn_drv_optimization_value) 337 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 338 Opts.OptimizationLevel = MaxOptLevel; 339 } 340 341 // We must always run at least the always inlining pass. 342 Opts.setInlining( 343 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 344 : CodeGenOptions::OnlyAlwaysInlining); 345 // -fno-inline-functions overrides OptimizationLevel > 1. 346 Opts.NoInline = Args.hasArg(OPT_fno_inline); 347 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 348 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 349 350 if (Args.hasArg(OPT_gline_tables_only)) { 351 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 352 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) || 353 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) { 354 bool Default = false; 355 // Until dtrace (via CTF) and LLDB can deal with distributed debug info, 356 // Darwin and FreeBSD default to standalone/full debug info. 357 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() || 358 llvm::Triple(TargetOpts.Triple).isOSFreeBSD()) 359 Default = true; 360 361 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default)) 362 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 363 else 364 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 365 } 366 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 367 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 368 if (Args.hasArg(OPT_gdwarf_2)) 369 Opts.DwarfVersion = 2; 370 else if (Args.hasArg(OPT_gdwarf_3)) 371 Opts.DwarfVersion = 3; 372 else if (Args.hasArg(OPT_gdwarf_4)) 373 Opts.DwarfVersion = 4; 374 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo) 375 // Default Dwarf version is 4 if we are generating debug information. 376 Opts.DwarfVersion = 4; 377 378 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 379 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 380 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 381 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 382 OPT_fuse_register_sized_bitfield_access); 383 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 384 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 385 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 386 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 387 Opts.NoCommon = Args.hasArg(OPT_fno_common); 388 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 389 Opts.OptimizeSize = getOptimizationLevelSize(Args); 390 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 391 Args.hasArg(OPT_ffreestanding)); 392 Opts.UnrollLoops = 393 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 394 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 395 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 396 397 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as); 398 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 399 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 400 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate); 401 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ); 402 Opts.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping); 403 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping); 404 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 405 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 406 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 407 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 408 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 409 Opts.CodeModel = getCodeModel(Args, Diags); 410 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 411 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 412 Opts.DisableFree = Args.hasArg(OPT_disable_free); 413 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 414 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 415 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 416 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 417 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 418 Args.hasArg(OPT_cl_finite_math_only)|| 419 Args.hasArg(OPT_cl_fast_relaxed_math)); 420 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 421 Args.hasArg(OPT_cl_finite_math_only)|| 422 Args.hasArg(OPT_cl_fast_relaxed_math)); 423 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 424 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 425 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 426 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 427 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 428 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings); 429 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 430 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 431 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 432 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 433 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 434 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 435 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 436 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 437 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 438 Args.hasArg(OPT_cl_fast_relaxed_math); 439 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 440 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 441 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 442 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 443 444 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 445 OPT_fno_function_sections, false); 446 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 447 OPT_fno_data_sections, false); 448 449 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 450 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 451 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 452 453 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 454 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 455 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 456 457 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 458 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 459 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 460 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 461 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 462 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 463 Opts.CoverageNoFunctionNamesInData = 464 Args.hasArg(OPT_coverage_no_function_names_in_data); 465 if (Args.hasArg(OPT_coverage_version_EQ)) { 466 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 467 if (CoverageVersion.size() != 4) { 468 Diags.Report(diag::err_drv_invalid_value) 469 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 470 << CoverageVersion; 471 } else { 472 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 473 } 474 } 475 } 476 477 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 478 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 479 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 480 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 481 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 482 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 483 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 484 Opts.SanitizeMemoryTrackOrigins = 485 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 486 Opts.SanitizeUndefinedTrapOnError = 487 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 488 Opts.SSPBufferSize = 489 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 490 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 491 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 492 StringRef Val = A->getValue(); 493 unsigned StackAlignment = Opts.StackAlignment; 494 Val.getAsInteger(10, StackAlignment); 495 Opts.StackAlignment = StackAlignment; 496 } 497 498 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 499 StringRef Name = A->getValue(); 500 unsigned Method = llvm::StringSwitch<unsigned>(Name) 501 .Case("legacy", CodeGenOptions::Legacy) 502 .Case("non-legacy", CodeGenOptions::NonLegacy) 503 .Case("mixed", CodeGenOptions::Mixed) 504 .Default(~0U); 505 if (Method == ~0U) { 506 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 507 Success = false; 508 } else { 509 Opts.setObjCDispatchMethod( 510 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 511 } 512 } 513 514 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 515 StringRef Name = A->getValue(); 516 unsigned Model = llvm::StringSwitch<unsigned>(Name) 517 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 518 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 519 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 520 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 521 .Default(~0U); 522 if (Model == ~0U) { 523 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 524 Success = false; 525 } else { 526 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 527 } 528 } 529 530 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 531 StringRef Val = A->getValue(); 532 if (Val == "fast") 533 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 534 else if (Val == "on") 535 Opts.setFPContractMode(CodeGenOptions::FPC_On); 536 else if (Val == "off") 537 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 538 else 539 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 540 } 541 542 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 543 if (A->getOption().matches(OPT_fpcc_struct_return)) { 544 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 545 } else { 546 assert(A->getOption().matches(OPT_freg_struct_return)); 547 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 548 } 549 } 550 551 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 552 bool NeedLocTracking = false; 553 554 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 555 Opts.OptimizationRemarkPattern = 556 GenerateOptimizationRemarkRegex(Diags, Args, A); 557 NeedLocTracking = true; 558 } 559 560 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 561 Opts.OptimizationRemarkMissedPattern = 562 GenerateOptimizationRemarkRegex(Diags, Args, A); 563 NeedLocTracking = true; 564 } 565 566 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 567 Opts.OptimizationRemarkAnalysisPattern = 568 GenerateOptimizationRemarkRegex(Diags, Args, A); 569 NeedLocTracking = true; 570 } 571 572 // If the user requested one of the flags in the -Rpass family, make sure 573 // that the backend tracks source location information. 574 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 575 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 576 577 return Success; 578 } 579 580 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 581 ArgList &Args) { 582 using namespace options; 583 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 584 Opts.Targets = Args.getAllArgValues(OPT_MT); 585 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 586 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 587 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 588 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 589 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 590 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 591 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 592 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 593 Opts.ModuleDependencyOutputDir = 594 Args.getLastArgValue(OPT_module_dependency_dir); 595 } 596 597 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 598 DiagnosticsEngine *Diags) { 599 using namespace options; 600 bool Success = true; 601 602 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 603 Opts.DiagnosticSerializationFile = 604 Args.getLastArgValue(OPT_diagnostic_serialized_file); 605 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 606 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 607 Opts.Pedantic = Args.hasArg(OPT_pedantic); 608 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 609 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 610 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 611 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 612 OPT_fno_show_column, 613 /*Default=*/true); 614 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 615 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 616 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 617 618 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 619 620 // Default behavior is to not to show note include stacks. 621 Opts.ShowNoteIncludeStack = false; 622 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 623 OPT_fno_diagnostics_show_note_include_stack)) 624 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 625 Opts.ShowNoteIncludeStack = true; 626 627 StringRef ShowOverloads = 628 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 629 if (ShowOverloads == "best") 630 Opts.setShowOverloads(Ovl_Best); 631 else if (ShowOverloads == "all") 632 Opts.setShowOverloads(Ovl_All); 633 else { 634 Success = false; 635 if (Diags) 636 Diags->Report(diag::err_drv_invalid_value) 637 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 638 << ShowOverloads; 639 } 640 641 StringRef ShowCategory = 642 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 643 if (ShowCategory == "none") 644 Opts.ShowCategories = 0; 645 else if (ShowCategory == "id") 646 Opts.ShowCategories = 1; 647 else if (ShowCategory == "name") 648 Opts.ShowCategories = 2; 649 else { 650 Success = false; 651 if (Diags) 652 Diags->Report(diag::err_drv_invalid_value) 653 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 654 << ShowCategory; 655 } 656 657 StringRef Format = 658 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 659 if (Format == "clang") 660 Opts.setFormat(DiagnosticOptions::Clang); 661 else if (Format == "msvc") 662 Opts.setFormat(DiagnosticOptions::Msvc); 663 else if (Format == "msvc-fallback") { 664 Opts.setFormat(DiagnosticOptions::Msvc); 665 Opts.CLFallbackMode = true; 666 } else if (Format == "vi") 667 Opts.setFormat(DiagnosticOptions::Vi); 668 else { 669 Success = false; 670 if (Diags) 671 Diags->Report(diag::err_drv_invalid_value) 672 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 673 << Format; 674 } 675 676 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 677 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 678 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 679 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 680 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 681 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 682 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 683 Opts.MacroBacktraceLimit = 684 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 685 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 686 Opts.TemplateBacktraceLimit = getLastArgIntValue( 687 Args, OPT_ftemplate_backtrace_limit, 688 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 689 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 690 Args, OPT_fconstexpr_backtrace_limit, 691 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 692 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 693 DiagnosticOptions::DefaultTabStop, Diags); 694 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 695 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 696 if (Diags) 697 Diags->Report(diag::warn_ignoring_ftabstop_value) 698 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 699 } 700 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 701 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings); 702 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks); 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 case OPT_ast_dump_lookups: 723 Opts.ProgramAction = frontend::ASTDump; break; 724 case OPT_ast_print: 725 Opts.ProgramAction = frontend::ASTPrint; break; 726 case OPT_ast_view: 727 Opts.ProgramAction = frontend::ASTView; break; 728 case OPT_dump_raw_tokens: 729 Opts.ProgramAction = frontend::DumpRawTokens; break; 730 case OPT_dump_tokens: 731 Opts.ProgramAction = frontend::DumpTokens; break; 732 case OPT_S: 733 Opts.ProgramAction = frontend::EmitAssembly; break; 734 case OPT_emit_llvm_bc: 735 Opts.ProgramAction = frontend::EmitBC; break; 736 case OPT_emit_html: 737 Opts.ProgramAction = frontend::EmitHTML; break; 738 case OPT_emit_llvm: 739 Opts.ProgramAction = frontend::EmitLLVM; break; 740 case OPT_emit_llvm_only: 741 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 742 case OPT_emit_codegen_only: 743 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 744 case OPT_emit_obj: 745 Opts.ProgramAction = frontend::EmitObj; break; 746 case OPT_fixit_EQ: 747 Opts.FixItSuffix = A->getValue(); 748 // fall-through! 749 case OPT_fixit: 750 Opts.ProgramAction = frontend::FixIt; break; 751 case OPT_emit_module: 752 Opts.ProgramAction = frontend::GenerateModule; break; 753 case OPT_emit_pch: 754 Opts.ProgramAction = frontend::GeneratePCH; break; 755 case OPT_emit_pth: 756 Opts.ProgramAction = frontend::GeneratePTH; break; 757 case OPT_init_only: 758 Opts.ProgramAction = frontend::InitOnly; break; 759 case OPT_fsyntax_only: 760 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 761 case OPT_module_file_info: 762 Opts.ProgramAction = frontend::ModuleFileInfo; break; 763 case OPT_verify_pch: 764 Opts.ProgramAction = frontend::VerifyPCH; break; 765 case OPT_print_decl_contexts: 766 Opts.ProgramAction = frontend::PrintDeclContext; break; 767 case OPT_print_preamble: 768 Opts.ProgramAction = frontend::PrintPreamble; break; 769 case OPT_E: 770 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 771 case OPT_rewrite_macros: 772 Opts.ProgramAction = frontend::RewriteMacros; break; 773 case OPT_rewrite_objc: 774 Opts.ProgramAction = frontend::RewriteObjC; break; 775 case OPT_rewrite_test: 776 Opts.ProgramAction = frontend::RewriteTest; break; 777 case OPT_analyze: 778 Opts.ProgramAction = frontend::RunAnalysis; break; 779 case OPT_migrate: 780 Opts.ProgramAction = frontend::MigrateSource; break; 781 case OPT_Eonly: 782 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 783 } 784 } 785 786 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 787 Opts.Plugins.push_back(A->getValue(0)); 788 Opts.ProgramAction = frontend::PluginAction; 789 Opts.ActionName = A->getValue(); 790 791 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 792 end = Args.filtered_end(); it != end; ++it) { 793 if ((*it)->getValue(0) == Opts.ActionName) 794 Opts.PluginArgs.push_back((*it)->getValue(1)); 795 } 796 } 797 798 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 799 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 800 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 801 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 802 end = Args.filtered_end(); it != end; ++it) { 803 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 804 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 805 } 806 } 807 808 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 809 Opts.CodeCompletionAt = 810 ParsedSourceLocation::FromString(A->getValue()); 811 if (Opts.CodeCompletionAt.FileName.empty()) 812 Diags.Report(diag::err_drv_invalid_value) 813 << A->getAsString(Args) << A->getValue(); 814 } 815 Opts.DisableFree = Args.hasArg(OPT_disable_free); 816 817 Opts.OutputFile = Args.getLastArgValue(OPT_o); 818 Opts.Plugins = Args.getAllArgValues(OPT_load); 819 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 820 Opts.ShowHelp = Args.hasArg(OPT_help); 821 Opts.ShowStats = Args.hasArg(OPT_print_stats); 822 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 823 Opts.ShowVersion = Args.hasArg(OPT_version); 824 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 825 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 826 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 827 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 828 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 829 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 830 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump); 831 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 832 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 833 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 834 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 835 836 Opts.CodeCompleteOpts.IncludeMacros 837 = Args.hasArg(OPT_code_completion_macros); 838 Opts.CodeCompleteOpts.IncludeCodePatterns 839 = Args.hasArg(OPT_code_completion_patterns); 840 Opts.CodeCompleteOpts.IncludeGlobals 841 = !Args.hasArg(OPT_no_code_completion_globals); 842 Opts.CodeCompleteOpts.IncludeBriefComments 843 = Args.hasArg(OPT_code_completion_brief_comments); 844 845 Opts.OverrideRecordLayoutsFile 846 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 847 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 848 OPT_arcmt_modify, 849 OPT_arcmt_migrate)) { 850 switch (A->getOption().getID()) { 851 default: 852 llvm_unreachable("missed a case"); 853 case OPT_arcmt_check: 854 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 855 break; 856 case OPT_arcmt_modify: 857 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 858 break; 859 case OPT_arcmt_migrate: 860 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 861 break; 862 } 863 } 864 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 865 Opts.ARCMTMigrateReportOut 866 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 867 Opts.ARCMTMigrateEmitARCErrors 868 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 869 870 if (Args.hasArg(OPT_objcmt_migrate_literals)) 871 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 872 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 873 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 874 if (Args.hasArg(OPT_objcmt_migrate_property)) 875 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 876 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 877 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 878 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 879 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 880 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 881 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 882 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 883 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 884 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 885 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 886 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 887 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 888 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 889 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 890 if (Args.hasArg(OPT_objcmt_atomic_property)) 891 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 892 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 893 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 894 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 895 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 896 if (Args.hasArg(OPT_objcmt_migrate_all)) 897 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 898 899 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 900 901 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 902 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 903 Diags.Report(diag::err_drv_argument_not_allowed_with) 904 << "ARC migration" << "ObjC migration"; 905 } 906 907 InputKind DashX = IK_None; 908 if (const Arg *A = Args.getLastArg(OPT_x)) { 909 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 910 .Case("c", IK_C) 911 .Case("cl", IK_OpenCL) 912 .Case("cuda", IK_CUDA) 913 .Case("c++", IK_CXX) 914 .Case("objective-c", IK_ObjC) 915 .Case("objective-c++", IK_ObjCXX) 916 .Case("cpp-output", IK_PreprocessedC) 917 .Case("assembler-with-cpp", IK_Asm) 918 .Case("c++-cpp-output", IK_PreprocessedCXX) 919 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 920 .Case("objc-cpp-output", IK_PreprocessedObjC) 921 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 922 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 923 .Case("c-header", IK_C) 924 .Case("cl-header", IK_OpenCL) 925 .Case("objective-c-header", IK_ObjC) 926 .Case("c++-header", IK_CXX) 927 .Case("objective-c++-header", IK_ObjCXX) 928 .Cases("ast", "pcm", IK_AST) 929 .Case("ir", IK_LLVM_IR) 930 .Default(IK_None); 931 if (DashX == IK_None) 932 Diags.Report(diag::err_drv_invalid_value) 933 << A->getAsString(Args) << A->getValue(); 934 } 935 936 // '-' is the default input if none is given. 937 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 938 Opts.Inputs.clear(); 939 if (Inputs.empty()) 940 Inputs.push_back("-"); 941 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 942 InputKind IK = DashX; 943 if (IK == IK_None) { 944 IK = FrontendOptions::getInputKindForExtension( 945 StringRef(Inputs[i]).rsplit('.').second); 946 // FIXME: Remove this hack. 947 if (i == 0) 948 DashX = IK; 949 } 950 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 951 } 952 953 return DashX; 954 } 955 956 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 957 void *MainAddr) { 958 SmallString<128> P(llvm::sys::fs::getMainExecutable(Argv0, MainAddr)); 959 960 if (!P.empty()) { 961 llvm::sys::path::remove_filename(P); // Remove /clang from foo/bin/clang 962 llvm::sys::path::remove_filename(P); // Remove /bin from foo/bin 963 964 // Get foo/lib/clang/<version>/include 965 llvm::sys::path::append(P, "lib", "clang", CLANG_VERSION_STRING); 966 } 967 968 return P.str(); 969 } 970 971 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 972 using namespace options; 973 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 974 Opts.Verbose = Args.hasArg(OPT_v); 975 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 976 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 977 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 978 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 979 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 980 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 981 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 982 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 983 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 984 // -fmodules implies -fmodule-maps 985 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules); 986 Opts.ModuleCachePruneInterval = 987 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 988 Opts.ModuleCachePruneAfter = 989 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 990 Opts.ModulesValidateOncePerBuildSession = 991 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 992 Opts.BuildSessionTimestamp = 993 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 994 Opts.ModulesValidateSystemHeaders = 995 Args.hasArg(OPT_fmodules_validate_system_headers); 996 997 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 998 ie = Args.filtered_end(); 999 it != ie; ++it) { 1000 StringRef MacroDef = (*it)->getValue(); 1001 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1002 } 1003 std::vector<std::string> ModuleMapFiles = 1004 Args.getAllArgValues(OPT_fmodule_map_file); 1005 Opts.ModuleMapFiles.insert(ModuleMapFiles.begin(), ModuleMapFiles.end()); 1006 1007 // Add -I..., -F..., and -index-header-map options in order. 1008 bool IsIndexHeaderMap = false; 1009 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 1010 OPT_index_header_map), 1011 ie = Args.filtered_end(); it != ie; ++it) { 1012 if ((*it)->getOption().matches(OPT_index_header_map)) { 1013 // -index-header-map applies to the next -I or -F. 1014 IsIndexHeaderMap = true; 1015 continue; 1016 } 1017 1018 frontend::IncludeDirGroup Group 1019 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 1020 1021 Opts.AddPath((*it)->getValue(), Group, 1022 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 1023 IsIndexHeaderMap = false; 1024 } 1025 1026 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1027 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1028 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 1029 OPT_iwithprefixbefore), 1030 ie = Args.filtered_end(); it != ie; ++it) { 1031 const Arg *A = *it; 1032 if (A->getOption().matches(OPT_iprefix)) 1033 Prefix = A->getValue(); 1034 else if (A->getOption().matches(OPT_iwithprefix)) 1035 Opts.AddPath(Prefix.str() + A->getValue(), 1036 frontend::After, false, true); 1037 else 1038 Opts.AddPath(Prefix.str() + A->getValue(), 1039 frontend::Angled, false, true); 1040 } 1041 1042 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 1043 ie = Args.filtered_end(); it != ie; ++it) 1044 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 1045 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 1046 ie = Args.filtered_end(); it != ie; ++it) 1047 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 1048 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 1049 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 1050 Opts.AddPath((*it)->getValue(), frontend::System, false, 1051 !(*it)->getOption().matches(OPT_iwithsysroot)); 1052 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 1053 ie = Args.filtered_end(); it != ie; ++it) 1054 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 1055 1056 // Add the paths for the various language specific isystem flags. 1057 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 1058 ie = Args.filtered_end(); it != ie; ++it) 1059 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 1060 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 1061 ie = Args.filtered_end(); it != ie; ++it) 1062 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 1063 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 1064 ie = Args.filtered_end(); it != ie; ++it) 1065 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 1066 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 1067 ie = Args.filtered_end(); it != ie; ++it) 1068 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 1069 1070 // Add the internal paths from a driver that detects standard include paths. 1071 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 1072 OPT_internal_externc_isystem), 1073 E = Args.filtered_end(); 1074 I != E; ++I) { 1075 frontend::IncludeDirGroup Group = frontend::System; 1076 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 1077 Group = frontend::ExternCSystem; 1078 Opts.AddPath((*I)->getValue(), Group, false, true); 1079 } 1080 1081 // Add the path prefixes which are implicitly treated as being system headers. 1082 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix, 1083 OPT_no_system_header_prefix), 1084 E = Args.filtered_end(); 1085 I != E; ++I) 1086 Opts.AddSystemHeaderPrefix( 1087 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix)); 1088 1089 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay), 1090 E = Args.filtered_end(); I != E; ++I) 1091 Opts.AddVFSOverlayFile((*I)->getValue()); 1092 } 1093 1094 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1095 LangStandard::Kind LangStd) { 1096 // Set some properties which depend solely on the input kind; it would be nice 1097 // to move these to the language standard, and have the driver resolve the 1098 // input kind + language standard. 1099 if (IK == IK_Asm) { 1100 Opts.AsmPreprocessor = 1; 1101 } else if (IK == IK_ObjC || 1102 IK == IK_ObjCXX || 1103 IK == IK_PreprocessedObjC || 1104 IK == IK_PreprocessedObjCXX) { 1105 Opts.ObjC1 = Opts.ObjC2 = 1; 1106 } 1107 1108 if (LangStd == LangStandard::lang_unspecified) { 1109 // Based on the base language, pick one. 1110 switch (IK) { 1111 case IK_None: 1112 case IK_AST: 1113 case IK_LLVM_IR: 1114 llvm_unreachable("Invalid input kind!"); 1115 case IK_OpenCL: 1116 LangStd = LangStandard::lang_opencl; 1117 break; 1118 case IK_CUDA: 1119 LangStd = LangStandard::lang_cuda; 1120 break; 1121 case IK_Asm: 1122 case IK_C: 1123 case IK_PreprocessedC: 1124 case IK_ObjC: 1125 case IK_PreprocessedObjC: 1126 LangStd = LangStandard::lang_gnu99; 1127 break; 1128 case IK_CXX: 1129 case IK_PreprocessedCXX: 1130 case IK_ObjCXX: 1131 case IK_PreprocessedObjCXX: 1132 LangStd = LangStandard::lang_gnucxx98; 1133 break; 1134 } 1135 } 1136 1137 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1138 Opts.LineComment = Std.hasLineComments(); 1139 Opts.C99 = Std.isC99(); 1140 Opts.C11 = Std.isC11(); 1141 Opts.CPlusPlus = Std.isCPlusPlus(); 1142 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1143 Opts.CPlusPlus14 = Std.isCPlusPlus14(); 1144 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1145 Opts.Digraphs = Std.hasDigraphs(); 1146 Opts.GNUMode = Std.isGNUMode(); 1147 Opts.GNUInline = !Std.isC99(); 1148 Opts.HexFloats = Std.hasHexFloats(); 1149 Opts.ImplicitInt = Std.hasImplicitInt(); 1150 1151 // Set OpenCL Version. 1152 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1153 if (LangStd == LangStandard::lang_opencl) 1154 Opts.OpenCLVersion = 100; 1155 else if (LangStd == LangStandard::lang_opencl11) 1156 Opts.OpenCLVersion = 110; 1157 else if (LangStd == LangStandard::lang_opencl12) 1158 Opts.OpenCLVersion = 120; 1159 1160 // OpenCL has some additional defaults. 1161 if (Opts.OpenCL) { 1162 Opts.AltiVec = 0; 1163 Opts.CXXOperatorNames = 1; 1164 Opts.LaxVectorConversions = 0; 1165 Opts.DefaultFPContract = 1; 1166 Opts.NativeHalfType = 1; 1167 } 1168 1169 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA; 1170 1171 // OpenCL and C++ both have bool, true, false keywords. 1172 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1173 1174 // OpenCL has half keyword 1175 Opts.Half = Opts.OpenCL; 1176 1177 // C++ has wchar_t keyword. 1178 Opts.WChar = Opts.CPlusPlus; 1179 1180 Opts.GNUKeywords = Opts.GNUMode; 1181 Opts.CXXOperatorNames = Opts.CPlusPlus; 1182 1183 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1184 // is specified, or -std is set to a conforming mode. 1185 // Trigraphs are disabled by default in c++1z onwards. 1186 Opts.Trigraphs = !Opts.GNUMode && !Opts.CPlusPlus1z; 1187 1188 Opts.DollarIdents = !Opts.AsmPreprocessor; 1189 1190 // C++14 onwards has sized global deallocation functions. 1191 Opts.SizedDeallocation = Opts.CPlusPlus14; 1192 } 1193 1194 /// Attempt to parse a visibility value out of the given argument. 1195 static Visibility parseVisibility(Arg *arg, ArgList &args, 1196 DiagnosticsEngine &diags) { 1197 StringRef value = arg->getValue(); 1198 if (value == "default") { 1199 return DefaultVisibility; 1200 } else if (value == "hidden") { 1201 return HiddenVisibility; 1202 } else if (value == "protected") { 1203 // FIXME: diagnose if target does not support protected visibility 1204 return ProtectedVisibility; 1205 } 1206 1207 diags.Report(diag::err_drv_invalid_value) 1208 << arg->getAsString(args) << value; 1209 return DefaultVisibility; 1210 } 1211 1212 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) { 1213 auto Arg = Args.getLastArg(OPT_fms_compatibility_version); 1214 if (!Arg) 1215 return 0; 1216 1217 // The MSC versioning scheme involves four versioning components: 1218 // - Major 1219 // - Minor 1220 // - Build 1221 // - Patch 1222 // 1223 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value. 1224 // Additionally, the value may be provided in the form of a more readable 1225 // MM.mm.bbbbb.pp version. 1226 // 1227 // Unfortunately, due to the bit-width limitations, we cannot currently encode 1228 // the value for the patch level. 1229 1230 unsigned VC[4] = {0}; 1231 StringRef Value = Arg->getValue(); 1232 SmallVector<StringRef, 4> Components; 1233 1234 Value.split(Components, ".", llvm::array_lengthof(VC)); 1235 for (unsigned CI = 0, 1236 CE = std::min(Components.size(), llvm::array_lengthof(VC)); 1237 CI < CE; ++CI) { 1238 if (Components[CI].getAsInteger(10, VC[CI])) { 1239 Diags.Report(diag::err_drv_invalid_value) 1240 << Arg->getAsString(Args) << Value; 1241 return 0; 1242 } 1243 } 1244 1245 // FIXME we cannot encode the patch level 1246 return VC[0] * 10000000 + VC[1] * 100000 + VC[2]; 1247 } 1248 1249 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1250 DiagnosticsEngine &Diags) { 1251 // FIXME: Cleanup per-file based stuff. 1252 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1253 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1254 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1255 #define LANGSTANDARD(id, name, desc, features) \ 1256 .Case(name, LangStandard::lang_##id) 1257 #include "clang/Frontend/LangStandards.def" 1258 .Default(LangStandard::lang_unspecified); 1259 if (LangStd == LangStandard::lang_unspecified) 1260 Diags.Report(diag::err_drv_invalid_value) 1261 << A->getAsString(Args) << A->getValue(); 1262 else { 1263 // Valid standard, check to make sure language and standard are 1264 // compatible. 1265 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1266 switch (IK) { 1267 case IK_C: 1268 case IK_ObjC: 1269 case IK_PreprocessedC: 1270 case IK_PreprocessedObjC: 1271 if (!(Std.isC89() || Std.isC99())) 1272 Diags.Report(diag::err_drv_argument_not_allowed_with) 1273 << A->getAsString(Args) << "C/ObjC"; 1274 break; 1275 case IK_CXX: 1276 case IK_ObjCXX: 1277 case IK_PreprocessedCXX: 1278 case IK_PreprocessedObjCXX: 1279 if (!Std.isCPlusPlus()) 1280 Diags.Report(diag::err_drv_argument_not_allowed_with) 1281 << A->getAsString(Args) << "C++/ObjC++"; 1282 break; 1283 case IK_OpenCL: 1284 if (!Std.isC99()) 1285 Diags.Report(diag::err_drv_argument_not_allowed_with) 1286 << A->getAsString(Args) << "OpenCL"; 1287 break; 1288 case IK_CUDA: 1289 if (!Std.isCPlusPlus()) 1290 Diags.Report(diag::err_drv_argument_not_allowed_with) 1291 << A->getAsString(Args) << "CUDA"; 1292 break; 1293 default: 1294 break; 1295 } 1296 } 1297 } 1298 1299 // -cl-std only applies for OpenCL language standards. 1300 // Override the -std option in this case. 1301 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1302 LangStandard::Kind OpenCLLangStd 1303 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1304 .Case("CL", LangStandard::lang_opencl) 1305 .Case("CL1.1", LangStandard::lang_opencl11) 1306 .Case("CL1.2", LangStandard::lang_opencl12) 1307 .Default(LangStandard::lang_unspecified); 1308 1309 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1310 Diags.Report(diag::err_drv_invalid_value) 1311 << A->getAsString(Args) << A->getValue(); 1312 } 1313 else 1314 LangStd = OpenCLLangStd; 1315 } 1316 1317 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1318 1319 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1320 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1321 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1322 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1323 // name, as it doesn't seem a useful distinction. 1324 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1325 Opts.GNUKeywords); 1326 1327 if (Args.hasArg(OPT_fno_operator_names)) 1328 Opts.CXXOperatorNames = 0; 1329 1330 if (Opts.ObjC1) { 1331 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1332 StringRef value = arg->getValue(); 1333 if (Opts.ObjCRuntime.tryParse(value)) 1334 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1335 } 1336 1337 if (Args.hasArg(OPT_fobjc_gc_only)) 1338 Opts.setGC(LangOptions::GCOnly); 1339 else if (Args.hasArg(OPT_fobjc_gc)) 1340 Opts.setGC(LangOptions::HybridGC); 1341 else if (Args.hasArg(OPT_fobjc_arc)) { 1342 Opts.ObjCAutoRefCount = 1; 1343 if (!Opts.ObjCRuntime.allowsARC()) 1344 Diags.Report(diag::err_arc_unsupported_on_runtime); 1345 1346 // Only set ObjCARCWeak if ARC is enabled. 1347 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1348 Opts.ObjCARCWeak = 1; 1349 else 1350 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1351 } 1352 1353 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1354 Opts.ObjCInferRelatedResultType = 0; 1355 1356 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1357 Opts.ObjCSubscriptingLegacyRuntime = 1358 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1359 } 1360 1361 if (Args.hasArg(OPT_fgnu89_inline)) 1362 Opts.GNUInline = 1; 1363 1364 if (Args.hasArg(OPT_fapple_kext)) { 1365 if (!Opts.CPlusPlus) 1366 Diags.Report(diag::warn_c_kext); 1367 else 1368 Opts.AppleKext = 1; 1369 } 1370 1371 if (Args.hasArg(OPT_print_ivar_layout)) 1372 Opts.ObjCGCBitmapPrint = 1; 1373 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1374 Opts.NoConstantCFStrings = 1; 1375 1376 if (Args.hasArg(OPT_faltivec)) 1377 Opts.AltiVec = 1; 1378 1379 if (Args.hasArg(OPT_pthread)) 1380 Opts.POSIXThreads = 1; 1381 1382 // The value-visibility mode defaults to "default". 1383 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1384 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1385 } else { 1386 Opts.setValueVisibilityMode(DefaultVisibility); 1387 } 1388 1389 // The type-visibility mode defaults to the value-visibility mode. 1390 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1391 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1392 } else { 1393 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1394 } 1395 1396 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1397 Opts.InlineVisibilityHidden = 1; 1398 1399 if (Args.hasArg(OPT_ftrapv)) { 1400 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1401 // Set the handler, if one is specified. 1402 Opts.OverflowHandler = 1403 Args.getLastArgValue(OPT_ftrapv_handler); 1404 } 1405 else if (Args.hasArg(OPT_fwrapv)) 1406 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1407 1408 if (Args.hasArg(OPT_trigraphs)) 1409 Opts.Trigraphs = 1; 1410 1411 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1412 OPT_fno_dollars_in_identifiers, 1413 Opts.DollarIdents); 1414 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1415 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1416 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1417 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1418 Opts.MSCompatibilityVersion = parseMSCVersion(Args, Diags); 1419 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1420 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1421 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1422 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1423 Opts.ConstStrings); 1424 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1425 Opts.LaxVectorConversions = 0; 1426 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1427 Opts.ThreadsafeStatics = 0; 1428 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1429 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1430 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1431 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1432 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1433 1434 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1435 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1436 Opts.Blocks = Args.hasArg(OPT_fblocks); 1437 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1438 Opts.Modules = Args.hasArg(OPT_fmodules); 1439 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1440 Opts.ModulesDeclUse = 1441 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1442 Opts.ModulesSearchAll = Opts.Modules && 1443 !Args.hasArg(OPT_fno_modules_search_all) && 1444 Args.hasArg(OPT_fmodules_search_all); 1445 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1446 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1447 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1448 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1449 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1450 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1451 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1452 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1453 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1454 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation); 1455 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1456 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1457 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1458 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1459 Opts.InstantiationDepth = 1460 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1461 Opts.ArrowDepth = 1462 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1463 Opts.ConstexprCallDepth = 1464 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1465 Opts.ConstexprStepLimit = 1466 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1467 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1468 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1469 Opts.NumLargeByValueCopy = 1470 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1471 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1472 Opts.ObjCConstantStringClass = 1473 Args.getLastArgValue(OPT_fconstant_string_class); 1474 Opts.ObjCDefaultSynthProperties = 1475 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1476 Opts.EncodeExtendedBlockSig = 1477 Args.hasArg(OPT_fencode_extended_block_signature); 1478 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1479 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1480 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags); 1481 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1482 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1483 Opts.Static = Args.hasArg(OPT_static_define); 1484 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1485 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1486 || Args.hasArg(OPT_fdump_record_layouts); 1487 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1488 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1489 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1490 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1491 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1492 Opts.MRTD = Args.hasArg(OPT_mrtd); 1493 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1494 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1495 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1496 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1497 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1498 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1499 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1500 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1501 Opts.ImplementationOfModule = 1502 Args.getLastArgValue(OPT_fmodule_implementation_of); 1503 1504 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1505 Opts.CurrentModule != Opts.ImplementationOfModule) { 1506 Diags.Report(diag::err_conflicting_module_names) 1507 << Opts.CurrentModule << Opts.ImplementationOfModule; 1508 } 1509 1510 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1511 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1512 .Case("target", LangOptions::ASMM_Target) 1513 .Case("no", LangOptions::ASMM_Off) 1514 .Case("yes", LangOptions::ASMM_On) 1515 .Default(255)) { 1516 default: 1517 Diags.Report(diag::err_drv_invalid_value) 1518 << "-faddress-space-map-mangling=" << A->getValue(); 1519 break; 1520 case LangOptions::ASMM_Target: 1521 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1522 break; 1523 case LangOptions::ASMM_On: 1524 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1525 break; 1526 case LangOptions::ASMM_Off: 1527 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1528 break; 1529 } 1530 } 1531 1532 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1533 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1534 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1535 A->getValue()) 1536 .Case("single", 1537 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1538 .Case("multiple", 1539 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1540 .Case("virtual", 1541 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1542 .Default(LangOptions::PPTMK_BestCase); 1543 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1544 Diags.Report(diag::err_drv_invalid_value) 1545 << "-fms-memptr-rep=" << A->getValue(); 1546 1547 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1548 } 1549 1550 // Check if -fopenmp= is specified. 1551 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) { 1552 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue()) 1553 .Case("libiomp5", true) 1554 .Default(false); 1555 } 1556 1557 // Record whether the __DEPRECATED define was requested. 1558 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1559 OPT_fno_deprecated_macro, 1560 Opts.Deprecated); 1561 1562 // FIXME: Eliminate this dependency. 1563 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1564 OptSize = getOptimizationLevelSize(Args); 1565 Opts.Optimize = Opt != 0; 1566 Opts.OptimizeSize = OptSize != 0; 1567 1568 // This is the __NO_INLINE__ define, which just depends on things like the 1569 // optimization level and -fno-inline, not actually whether the backend has 1570 // inlining enabled. 1571 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1572 1573 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1574 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1575 1576 Opts.RetainCommentsFromSystemHeaders = 1577 Args.hasArg(OPT_fretain_comments_from_system_headers); 1578 1579 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1580 switch (SSP) { 1581 default: 1582 Diags.Report(diag::err_drv_invalid_value) 1583 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1584 break; 1585 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1586 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1587 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1588 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1589 } 1590 1591 // Parse -fsanitize= arguments. 1592 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1593 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1594 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1595 // efficiently map string values to them. Perform the mapping indirectly: 1596 // convert strings to enumerated values, then switch over the enum to set 1597 // the right bitfield value. 1598 enum Sanitizer { 1599 #define SANITIZER(NAME, ID) \ 1600 ID, 1601 #include "clang/Basic/Sanitizers.def" 1602 Unknown 1603 }; 1604 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1605 #define SANITIZER(NAME, ID) \ 1606 .Case(NAME, ID) 1607 #include "clang/Basic/Sanitizers.def" 1608 .Default(Unknown)) { 1609 #define SANITIZER(NAME, ID) \ 1610 case ID: \ 1611 Opts.Sanitize.ID = true; \ 1612 break; 1613 #include "clang/Basic/Sanitizers.def" 1614 1615 case Unknown: 1616 Diags.Report(diag::err_drv_invalid_value) 1617 << "-fsanitize=" << Sanitizers[I]; 1618 break; 1619 } 1620 } 1621 } 1622 1623 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1624 FileManager &FileMgr, 1625 DiagnosticsEngine &Diags) { 1626 using namespace options; 1627 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1628 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1629 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1630 Opts.TokenCache = A->getValue(); 1631 else 1632 Opts.TokenCache = Opts.ImplicitPTHInclude; 1633 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1634 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1635 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1636 1637 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1638 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1639 ie = Args.filtered_end(); it != ie; ++it) { 1640 const Arg *A = *it; 1641 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1642 } 1643 1644 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1645 StringRef Value(A->getValue()); 1646 size_t Comma = Value.find(','); 1647 unsigned Bytes = 0; 1648 unsigned EndOfLine = 0; 1649 1650 if (Comma == StringRef::npos || 1651 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1652 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1653 Diags.Report(diag::err_drv_preamble_format); 1654 else { 1655 Opts.PrecompiledPreambleBytes.first = Bytes; 1656 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1657 } 1658 } 1659 1660 // Add macros from the command line. 1661 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1662 ie = Args.filtered_end(); it != ie; ++it) { 1663 if ((*it)->getOption().matches(OPT_D)) 1664 Opts.addMacroDef((*it)->getValue()); 1665 else 1666 Opts.addMacroUndef((*it)->getValue()); 1667 } 1668 1669 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1670 1671 // Add the ordered list of -includes. 1672 for (arg_iterator it = Args.filtered_begin(OPT_include), 1673 ie = Args.filtered_end(); it != ie; ++it) { 1674 const Arg *A = *it; 1675 Opts.Includes.push_back(A->getValue()); 1676 } 1677 1678 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1679 ie = Args.filtered_end(); it != ie; ++it) { 1680 const Arg *A = *it; 1681 Opts.ChainedIncludes.push_back(A->getValue()); 1682 } 1683 1684 // Include 'altivec.h' if -faltivec option present 1685 if (Args.hasArg(OPT_faltivec)) 1686 Opts.Includes.push_back("altivec.h"); 1687 1688 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1689 ie = Args.filtered_end(); it != ie; ++it) { 1690 const Arg *A = *it; 1691 std::pair<StringRef,StringRef> Split = 1692 StringRef(A->getValue()).split(';'); 1693 1694 if (Split.second.empty()) { 1695 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1696 continue; 1697 } 1698 1699 Opts.addRemappedFile(Split.first, Split.second); 1700 } 1701 1702 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1703 StringRef Name = A->getValue(); 1704 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1705 .Case("libc++", ARCXX_libcxx) 1706 .Case("libstdc++", ARCXX_libstdcxx) 1707 .Case("none", ARCXX_nolib) 1708 .Default(~0U); 1709 if (Library == ~0U) 1710 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1711 else 1712 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1713 } 1714 } 1715 1716 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1717 ArgList &Args, 1718 frontend::ActionKind Action) { 1719 using namespace options; 1720 1721 switch (Action) { 1722 case frontend::ASTDeclList: 1723 case frontend::ASTDump: 1724 case frontend::ASTPrint: 1725 case frontend::ASTView: 1726 case frontend::EmitAssembly: 1727 case frontend::EmitBC: 1728 case frontend::EmitHTML: 1729 case frontend::EmitLLVM: 1730 case frontend::EmitLLVMOnly: 1731 case frontend::EmitCodeGenOnly: 1732 case frontend::EmitObj: 1733 case frontend::FixIt: 1734 case frontend::GenerateModule: 1735 case frontend::GeneratePCH: 1736 case frontend::GeneratePTH: 1737 case frontend::ParseSyntaxOnly: 1738 case frontend::ModuleFileInfo: 1739 case frontend::VerifyPCH: 1740 case frontend::PluginAction: 1741 case frontend::PrintDeclContext: 1742 case frontend::RewriteObjC: 1743 case frontend::RewriteTest: 1744 case frontend::RunAnalysis: 1745 case frontend::MigrateSource: 1746 Opts.ShowCPP = 0; 1747 break; 1748 1749 case frontend::DumpRawTokens: 1750 case frontend::DumpTokens: 1751 case frontend::InitOnly: 1752 case frontend::PrintPreamble: 1753 case frontend::PrintPreprocessedInput: 1754 case frontend::RewriteMacros: 1755 case frontend::RunPreprocessorOnly: 1756 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1757 break; 1758 } 1759 1760 Opts.ShowComments = Args.hasArg(OPT_C); 1761 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1762 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1763 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1764 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1765 } 1766 1767 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1768 using namespace options; 1769 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1770 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1771 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1772 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1773 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1774 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1775 1776 // Use the default target triple if unspecified. 1777 if (Opts.Triple.empty()) 1778 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1779 } 1780 1781 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1782 const char *const *ArgBegin, 1783 const char *const *ArgEnd, 1784 DiagnosticsEngine &Diags) { 1785 bool Success = true; 1786 1787 // Parse the arguments. 1788 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1789 const unsigned IncludedFlagsBitmask = options::CC1Option; 1790 unsigned MissingArgIndex, MissingArgCount; 1791 std::unique_ptr<InputArgList> Args( 1792 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount, 1793 IncludedFlagsBitmask)); 1794 1795 // Check for missing argument error. 1796 if (MissingArgCount) { 1797 Diags.Report(diag::err_drv_missing_argument) 1798 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1799 Success = false; 1800 } 1801 1802 // Issue errors on unknown arguments. 1803 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1804 ie = Args->filtered_end(); it != ie; ++it) { 1805 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1806 Success = false; 1807 } 1808 1809 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1810 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1811 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1812 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1813 && Success; 1814 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1815 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1816 // FIXME: We shouldn't have to pass the DashX option around here 1817 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1818 ParseTargetArgs(Res.getTargetOpts(), *Args); 1819 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags, 1820 Res.getTargetOpts()) && Success; 1821 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1822 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1823 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1824 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1825 Res.getLangOpts()->ObjCExceptions = 1; 1826 } 1827 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1828 // PCH file and find the original header name. Remove the need to do that in 1829 // ParsePreprocessorArgs and remove the FileManager 1830 // parameters from the function and the "FileManager.h" #include. 1831 FileManager FileMgr(Res.getFileSystemOpts()); 1832 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1833 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1834 Res.getFrontendOpts().ProgramAction); 1835 return Success; 1836 } 1837 1838 namespace { 1839 1840 class ModuleSignature { 1841 SmallVector<uint64_t, 16> Data; 1842 unsigned CurBit; 1843 uint64_t CurValue; 1844 1845 public: 1846 ModuleSignature() : CurBit(0), CurValue(0) { } 1847 1848 void add(uint64_t Value, unsigned Bits); 1849 void add(StringRef Value); 1850 void flush(); 1851 1852 llvm::APInt getAsInteger() const; 1853 }; 1854 } 1855 1856 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1857 CurValue |= Value << CurBit; 1858 if (CurBit + NumBits < 64) { 1859 CurBit += NumBits; 1860 return; 1861 } 1862 1863 // Add the current word. 1864 Data.push_back(CurValue); 1865 1866 if (CurBit) 1867 CurValue = Value >> (64-CurBit); 1868 else 1869 CurValue = 0; 1870 CurBit = (CurBit+NumBits) & 63; 1871 } 1872 1873 void ModuleSignature::flush() { 1874 if (CurBit == 0) 1875 return; 1876 1877 Data.push_back(CurValue); 1878 CurBit = 0; 1879 CurValue = 0; 1880 } 1881 1882 void ModuleSignature::add(StringRef Value) { 1883 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1884 add(*I, 8); 1885 } 1886 1887 llvm::APInt ModuleSignature::getAsInteger() const { 1888 return llvm::APInt(Data.size() * 64, Data); 1889 } 1890 1891 std::string CompilerInvocation::getModuleHash() const { 1892 // Note: For QoI reasons, the things we use as a hash here should all be 1893 // dumped via the -module-info flag. 1894 using llvm::hash_code; 1895 using llvm::hash_value; 1896 using llvm::hash_combine; 1897 1898 // Start the signature with the compiler version. 1899 // FIXME: We'd rather use something more cryptographically sound than 1900 // CityHash, but this will do for now. 1901 hash_code code = hash_value(getClangFullRepositoryVersion()); 1902 1903 // Extend the signature with the language options 1904 #define LANGOPT(Name, Bits, Default, Description) \ 1905 code = hash_combine(code, LangOpts->Name); 1906 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1907 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1908 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1909 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1910 #include "clang/Basic/LangOptions.def" 1911 1912 // Extend the signature with the target options. 1913 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1914 TargetOpts->ABI); 1915 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1916 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1917 1918 // Extend the signature with preprocessor options. 1919 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1920 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1921 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1922 1923 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1924 I = getPreprocessorOpts().Macros.begin(), 1925 IEnd = getPreprocessorOpts().Macros.end(); 1926 I != IEnd; ++I) { 1927 // If we're supposed to ignore this macro for the purposes of modules, 1928 // don't put it into the hash. 1929 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1930 // Check whether we're ignoring this macro. 1931 StringRef MacroDef = I->first; 1932 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1933 continue; 1934 } 1935 1936 code = hash_combine(code, I->first, I->second); 1937 } 1938 1939 // Extend the signature with the sysroot. 1940 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1941 hsOpts.UseStandardSystemIncludes, 1942 hsOpts.UseStandardCXXIncludes, 1943 hsOpts.UseLibcxx); 1944 code = hash_combine(code, hsOpts.ResourceDir); 1945 1946 // Extend the signature with the user build path. 1947 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 1948 1949 // Darwin-specific hack: if we have a sysroot, use the contents and 1950 // modification time of 1951 // $sysroot/System/Library/CoreServices/SystemVersion.plist 1952 // as part of the module hash. 1953 if (!hsOpts.Sysroot.empty()) { 1954 SmallString<128> systemVersionFile; 1955 systemVersionFile += hsOpts.Sysroot; 1956 llvm::sys::path::append(systemVersionFile, "System"); 1957 llvm::sys::path::append(systemVersionFile, "Library"); 1958 llvm::sys::path::append(systemVersionFile, "CoreServices"); 1959 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 1960 1961 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 1962 llvm::MemoryBuffer::getFile(systemVersionFile.str()); 1963 if (buffer) { 1964 code = hash_combine(code, buffer.get()->getBuffer()); 1965 1966 struct stat statBuf; 1967 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 1968 code = hash_combine(code, statBuf.st_mtime); 1969 } 1970 } 1971 1972 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1973 } 1974 1975 namespace clang { 1976 1977 template<typename IntTy> 1978 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 1979 IntTy Default, 1980 DiagnosticsEngine *Diags) { 1981 IntTy Res = Default; 1982 if (Arg *A = Args.getLastArg(Id)) { 1983 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 1984 if (Diags) 1985 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 1986 << A->getValue(); 1987 } 1988 } 1989 return Res; 1990 } 1991 1992 1993 // Declared in clang/Frontend/Utils.h. 1994 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 1995 DiagnosticsEngine *Diags) { 1996 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 1997 } 1998 1999 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 2000 uint64_t Default, 2001 DiagnosticsEngine *Diags) { 2002 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2003 } 2004 2005 void BuryPointer(const void *Ptr) { 2006 // This function may be called only a small fixed amount of times per each 2007 // invocation, otherwise we do actually have a leak which we want to report. 2008 // If this function is called more than kGraveYardMaxSize times, the pointers 2009 // will not be properly buried and a leak detector will report a leak, which 2010 // is what we want in such case. 2011 static const size_t kGraveYardMaxSize = 16; 2012 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2013 static std::atomic<unsigned> GraveYardSize; 2014 unsigned Idx = GraveYardSize++; 2015 if (Idx >= kGraveYardMaxSize) 2016 return; 2017 GraveYard[Idx] = Ptr; 2018 } 2019 2020 IntrusiveRefCntPtr<vfs::FileSystem> 2021 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2022 DiagnosticsEngine &Diags) { 2023 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2024 return vfs::getRealFileSystem(); 2025 2026 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2027 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2028 // earlier vfs files are on the bottom 2029 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2030 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2031 llvm::MemoryBuffer::getFile(File); 2032 if (!Buffer) { 2033 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2034 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2035 } 2036 2037 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2038 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr); 2039 if (!FS.get()) { 2040 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2041 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2042 } 2043 Overlay->pushOverlay(FS); 2044 } 2045 return Overlay; 2046 } 2047 } // end namespace clang 2048