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.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping); 407 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 408 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 409 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 410 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 411 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 412 Opts.CodeModel = getCodeModel(Args, Diags); 413 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 414 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 415 Opts.DisableFree = Args.hasArg(OPT_disable_free); 416 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 417 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 418 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 419 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 420 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 421 Args.hasArg(OPT_cl_finite_math_only)|| 422 Args.hasArg(OPT_cl_fast_relaxed_math)); 423 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 424 Args.hasArg(OPT_cl_finite_math_only)|| 425 Args.hasArg(OPT_cl_fast_relaxed_math)); 426 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 427 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 428 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 429 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 430 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 431 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 432 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 433 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 434 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 435 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 436 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 437 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 438 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 439 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 440 Args.hasArg(OPT_cl_fast_relaxed_math); 441 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 442 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 443 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 444 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 445 446 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 447 OPT_fno_function_sections, false); 448 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 449 OPT_fno_data_sections, false); 450 451 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 452 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 453 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 454 455 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 456 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 457 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 458 459 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 460 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 461 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 462 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 463 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 464 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 465 Opts.CoverageNoFunctionNamesInData = 466 Args.hasArg(OPT_coverage_no_function_names_in_data); 467 if (Args.hasArg(OPT_coverage_version_EQ)) { 468 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 469 if (CoverageVersion.size() != 4) { 470 Diags.Report(diag::err_drv_invalid_value) 471 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 472 << CoverageVersion; 473 } else { 474 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 475 } 476 } 477 } 478 479 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 480 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 481 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 482 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections); 483 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 484 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 485 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 486 Opts.SanitizeMemoryTrackOrigins = 487 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags); 488 Opts.SanitizeUndefinedTrapOnError = 489 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 490 Opts.SSPBufferSize = 491 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 492 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 493 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 494 StringRef Val = A->getValue(); 495 unsigned StackAlignment = Opts.StackAlignment; 496 Val.getAsInteger(10, StackAlignment); 497 Opts.StackAlignment = StackAlignment; 498 } 499 500 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 501 StringRef Name = A->getValue(); 502 unsigned Method = llvm::StringSwitch<unsigned>(Name) 503 .Case("legacy", CodeGenOptions::Legacy) 504 .Case("non-legacy", CodeGenOptions::NonLegacy) 505 .Case("mixed", CodeGenOptions::Mixed) 506 .Default(~0U); 507 if (Method == ~0U) { 508 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 509 Success = false; 510 } else { 511 Opts.setObjCDispatchMethod( 512 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 513 } 514 } 515 516 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 517 StringRef Name = A->getValue(); 518 unsigned Model = llvm::StringSwitch<unsigned>(Name) 519 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 520 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 521 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 522 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 523 .Default(~0U); 524 if (Model == ~0U) { 525 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 526 Success = false; 527 } else { 528 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 529 } 530 } 531 532 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 533 StringRef Val = A->getValue(); 534 if (Val == "fast") 535 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 536 else if (Val == "on") 537 Opts.setFPContractMode(CodeGenOptions::FPC_On); 538 else if (Val == "off") 539 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 540 else 541 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 542 } 543 544 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 545 if (A->getOption().matches(OPT_fpcc_struct_return)) { 546 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 547 } else { 548 assert(A->getOption().matches(OPT_freg_struct_return)); 549 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 550 } 551 } 552 553 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 554 bool NeedLocTracking = false; 555 556 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) { 557 Opts.OptimizationRemarkPattern = 558 GenerateOptimizationRemarkRegex(Diags, Args, A); 559 NeedLocTracking = true; 560 } 561 562 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) { 563 Opts.OptimizationRemarkMissedPattern = 564 GenerateOptimizationRemarkRegex(Diags, Args, A); 565 NeedLocTracking = true; 566 } 567 568 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) { 569 Opts.OptimizationRemarkAnalysisPattern = 570 GenerateOptimizationRemarkRegex(Diags, Args, A); 571 NeedLocTracking = true; 572 } 573 574 // If the user requested one of the flags in the -Rpass family, make sure 575 // that the backend tracks source location information. 576 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo) 577 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly); 578 579 return Success; 580 } 581 582 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 583 ArgList &Args) { 584 using namespace options; 585 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 586 Opts.Targets = Args.getAllArgValues(OPT_MT); 587 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 588 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps); 589 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 590 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 591 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 592 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 593 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 594 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 595 Opts.ModuleDependencyOutputDir = 596 Args.getLastArgValue(OPT_module_dependency_dir); 597 } 598 599 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 600 DiagnosticsEngine *Diags) { 601 using namespace options; 602 bool Success = true; 603 604 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 605 Opts.DiagnosticSerializationFile = 606 Args.getLastArgValue(OPT_diagnostic_serialized_file); 607 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 608 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 609 Opts.Pedantic = Args.hasArg(OPT_pedantic); 610 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 611 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 612 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 613 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 614 OPT_fno_show_column, 615 /*Default=*/true); 616 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 617 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 618 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 619 620 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 621 622 // Default behavior is to not to show note include stacks. 623 Opts.ShowNoteIncludeStack = false; 624 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 625 OPT_fno_diagnostics_show_note_include_stack)) 626 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 627 Opts.ShowNoteIncludeStack = true; 628 629 StringRef ShowOverloads = 630 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 631 if (ShowOverloads == "best") 632 Opts.setShowOverloads(Ovl_Best); 633 else if (ShowOverloads == "all") 634 Opts.setShowOverloads(Ovl_All); 635 else { 636 Success = false; 637 if (Diags) 638 Diags->Report(diag::err_drv_invalid_value) 639 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 640 << ShowOverloads; 641 } 642 643 StringRef ShowCategory = 644 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 645 if (ShowCategory == "none") 646 Opts.ShowCategories = 0; 647 else if (ShowCategory == "id") 648 Opts.ShowCategories = 1; 649 else if (ShowCategory == "name") 650 Opts.ShowCategories = 2; 651 else { 652 Success = false; 653 if (Diags) 654 Diags->Report(diag::err_drv_invalid_value) 655 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 656 << ShowCategory; 657 } 658 659 StringRef Format = 660 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 661 if (Format == "clang") 662 Opts.setFormat(DiagnosticOptions::Clang); 663 else if (Format == "msvc") 664 Opts.setFormat(DiagnosticOptions::Msvc); 665 else if (Format == "msvc-fallback") { 666 Opts.setFormat(DiagnosticOptions::Msvc); 667 Opts.CLFallbackMode = true; 668 } else if (Format == "vi") 669 Opts.setFormat(DiagnosticOptions::Vi); 670 else { 671 Success = false; 672 if (Diags) 673 Diags->Report(diag::err_drv_invalid_value) 674 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 675 << Format; 676 } 677 678 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 679 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 680 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 681 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 682 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 683 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 684 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 685 Opts.MacroBacktraceLimit = 686 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 687 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 688 Opts.TemplateBacktraceLimit = getLastArgIntValue( 689 Args, OPT_ftemplate_backtrace_limit, 690 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 691 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 692 Args, OPT_fconstexpr_backtrace_limit, 693 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 694 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 695 DiagnosticOptions::DefaultTabStop, Diags); 696 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 697 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 698 if (Diags) 699 Diags->Report(diag::warn_ignoring_ftabstop_value) 700 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 701 } 702 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 703 addWarningArgs(Args, Opts.Warnings); 704 705 return Success; 706 } 707 708 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 709 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 710 } 711 712 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 713 DiagnosticsEngine &Diags) { 714 using namespace options; 715 Opts.ProgramAction = frontend::ParseSyntaxOnly; 716 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 717 switch (A->getOption().getID()) { 718 default: 719 llvm_unreachable("Invalid option in group!"); 720 case OPT_ast_list: 721 Opts.ProgramAction = frontend::ASTDeclList; break; 722 case OPT_ast_dump: 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.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 831 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 832 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 833 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 834 835 Opts.CodeCompleteOpts.IncludeMacros 836 = Args.hasArg(OPT_code_completion_macros); 837 Opts.CodeCompleteOpts.IncludeCodePatterns 838 = Args.hasArg(OPT_code_completion_patterns); 839 Opts.CodeCompleteOpts.IncludeGlobals 840 = !Args.hasArg(OPT_no_code_completion_globals); 841 Opts.CodeCompleteOpts.IncludeBriefComments 842 = Args.hasArg(OPT_code_completion_brief_comments); 843 844 Opts.OverrideRecordLayoutsFile 845 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 846 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 847 OPT_arcmt_modify, 848 OPT_arcmt_migrate)) { 849 switch (A->getOption().getID()) { 850 default: 851 llvm_unreachable("missed a case"); 852 case OPT_arcmt_check: 853 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 854 break; 855 case OPT_arcmt_modify: 856 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 857 break; 858 case OPT_arcmt_migrate: 859 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 860 break; 861 } 862 } 863 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 864 Opts.ARCMTMigrateReportOut 865 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 866 Opts.ARCMTMigrateEmitARCErrors 867 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 868 869 if (Args.hasArg(OPT_objcmt_migrate_literals)) 870 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 871 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 872 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 873 if (Args.hasArg(OPT_objcmt_migrate_property)) 874 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 875 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 876 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 877 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 878 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 879 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 880 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 881 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 882 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 883 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 884 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 885 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 886 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 887 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 888 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 889 if (Args.hasArg(OPT_objcmt_atomic_property)) 890 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 891 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 892 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 893 if (Args.hasArg(OPT_objcmt_migrate_designated_init)) 894 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer; 895 if (Args.hasArg(OPT_objcmt_migrate_all)) 896 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 897 898 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path); 899 900 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 901 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 902 Diags.Report(diag::err_drv_argument_not_allowed_with) 903 << "ARC migration" << "ObjC migration"; 904 } 905 906 InputKind DashX = IK_None; 907 if (const Arg *A = Args.getLastArg(OPT_x)) { 908 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 909 .Case("c", IK_C) 910 .Case("cl", IK_OpenCL) 911 .Case("cuda", IK_CUDA) 912 .Case("c++", IK_CXX) 913 .Case("objective-c", IK_ObjC) 914 .Case("objective-c++", IK_ObjCXX) 915 .Case("cpp-output", IK_PreprocessedC) 916 .Case("assembler-with-cpp", IK_Asm) 917 .Case("c++-cpp-output", IK_PreprocessedCXX) 918 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 919 .Case("objc-cpp-output", IK_PreprocessedObjC) 920 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 921 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 922 .Case("c-header", IK_C) 923 .Case("cl-header", IK_OpenCL) 924 .Case("objective-c-header", IK_ObjC) 925 .Case("c++-header", IK_CXX) 926 .Case("objective-c++-header", IK_ObjCXX) 927 .Cases("ast", "pcm", IK_AST) 928 .Case("ir", IK_LLVM_IR) 929 .Default(IK_None); 930 if (DashX == IK_None) 931 Diags.Report(diag::err_drv_invalid_value) 932 << A->getAsString(Args) << A->getValue(); 933 } 934 935 // '-' is the default input if none is given. 936 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 937 Opts.Inputs.clear(); 938 if (Inputs.empty()) 939 Inputs.push_back("-"); 940 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 941 InputKind IK = DashX; 942 if (IK == IK_None) { 943 IK = FrontendOptions::getInputKindForExtension( 944 StringRef(Inputs[i]).rsplit('.').second); 945 // FIXME: Remove this hack. 946 if (i == 0) 947 DashX = IK; 948 } 949 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 950 } 951 952 return DashX; 953 } 954 955 std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 956 void *MainAddr) { 957 SmallString<128> P(llvm::sys::fs::getMainExecutable(Argv0, MainAddr)); 958 959 if (!P.empty()) { 960 llvm::sys::path::remove_filename(P); // Remove /clang from foo/bin/clang 961 llvm::sys::path::remove_filename(P); // Remove /bin from foo/bin 962 963 // Get foo/lib/clang/<version>/include 964 llvm::sys::path::append(P, "lib", "clang", CLANG_VERSION_STRING); 965 } 966 967 return P.str(); 968 } 969 970 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 971 using namespace options; 972 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 973 Opts.Verbose = Args.hasArg(OPT_v); 974 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 975 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 976 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 977 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 978 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 979 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 980 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 981 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path); 982 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 983 // -fmodules implies -fmodule-maps 984 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules); 985 Opts.ModuleCachePruneInterval = 986 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 987 Opts.ModuleCachePruneAfter = 988 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 989 Opts.ModulesValidateOncePerBuildSession = 990 Args.hasArg(OPT_fmodules_validate_once_per_build_session); 991 Opts.BuildSessionTimestamp = 992 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0); 993 Opts.ModulesValidateSystemHeaders = 994 Args.hasArg(OPT_fmodules_validate_system_headers); 995 996 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 997 ie = Args.filtered_end(); 998 it != ie; ++it) { 999 StringRef MacroDef = (*it)->getValue(); 1000 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 1001 } 1002 std::vector<std::string> ModuleMapFiles = 1003 Args.getAllArgValues(OPT_fmodule_map_file); 1004 Opts.ModuleMapFiles.insert(ModuleMapFiles.begin(), ModuleMapFiles.end()); 1005 1006 // Add -I..., -F..., and -index-header-map options in order. 1007 bool IsIndexHeaderMap = false; 1008 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 1009 OPT_index_header_map), 1010 ie = Args.filtered_end(); it != ie; ++it) { 1011 if ((*it)->getOption().matches(OPT_index_header_map)) { 1012 // -index-header-map applies to the next -I or -F. 1013 IsIndexHeaderMap = true; 1014 continue; 1015 } 1016 1017 frontend::IncludeDirGroup Group 1018 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 1019 1020 Opts.AddPath((*it)->getValue(), Group, 1021 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 1022 IsIndexHeaderMap = false; 1023 } 1024 1025 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 1026 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 1027 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 1028 OPT_iwithprefixbefore), 1029 ie = Args.filtered_end(); it != ie; ++it) { 1030 const Arg *A = *it; 1031 if (A->getOption().matches(OPT_iprefix)) 1032 Prefix = A->getValue(); 1033 else if (A->getOption().matches(OPT_iwithprefix)) 1034 Opts.AddPath(Prefix.str() + A->getValue(), 1035 frontend::After, false, true); 1036 else 1037 Opts.AddPath(Prefix.str() + A->getValue(), 1038 frontend::Angled, false, true); 1039 } 1040 1041 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 1042 ie = Args.filtered_end(); it != ie; ++it) 1043 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 1044 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 1045 ie = Args.filtered_end(); it != ie; ++it) 1046 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 1047 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 1048 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 1049 Opts.AddPath((*it)->getValue(), frontend::System, false, 1050 !(*it)->getOption().matches(OPT_iwithsysroot)); 1051 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 1052 ie = Args.filtered_end(); it != ie; ++it) 1053 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 1054 1055 // Add the paths for the various language specific isystem flags. 1056 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 1057 ie = Args.filtered_end(); it != ie; ++it) 1058 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 1059 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 1060 ie = Args.filtered_end(); it != ie; ++it) 1061 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 1062 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 1063 ie = Args.filtered_end(); it != ie; ++it) 1064 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 1065 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 1066 ie = Args.filtered_end(); it != ie; ++it) 1067 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 1068 1069 // Add the internal paths from a driver that detects standard include paths. 1070 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 1071 OPT_internal_externc_isystem), 1072 E = Args.filtered_end(); 1073 I != E; ++I) { 1074 frontend::IncludeDirGroup Group = frontend::System; 1075 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 1076 Group = frontend::ExternCSystem; 1077 Opts.AddPath((*I)->getValue(), Group, false, true); 1078 } 1079 1080 // Add the path prefixes which are implicitly treated as being system headers. 1081 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix, 1082 OPT_no_system_header_prefix), 1083 E = Args.filtered_end(); 1084 I != E; ++I) 1085 Opts.AddSystemHeaderPrefix( 1086 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix)); 1087 1088 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay), 1089 E = Args.filtered_end(); I != E; ++I) 1090 Opts.AddVFSOverlayFile((*I)->getValue()); 1091 } 1092 1093 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1094 LangStandard::Kind LangStd) { 1095 // Set some properties which depend solely on the input kind; it would be nice 1096 // to move these to the language standard, and have the driver resolve the 1097 // input kind + language standard. 1098 if (IK == IK_Asm) { 1099 Opts.AsmPreprocessor = 1; 1100 } else if (IK == IK_ObjC || 1101 IK == IK_ObjCXX || 1102 IK == IK_PreprocessedObjC || 1103 IK == IK_PreprocessedObjCXX) { 1104 Opts.ObjC1 = Opts.ObjC2 = 1; 1105 } 1106 1107 if (LangStd == LangStandard::lang_unspecified) { 1108 // Based on the base language, pick one. 1109 switch (IK) { 1110 case IK_None: 1111 case IK_AST: 1112 case IK_LLVM_IR: 1113 llvm_unreachable("Invalid input kind!"); 1114 case IK_OpenCL: 1115 LangStd = LangStandard::lang_opencl; 1116 break; 1117 case IK_CUDA: 1118 LangStd = LangStandard::lang_cuda; 1119 break; 1120 case IK_Asm: 1121 case IK_C: 1122 case IK_PreprocessedC: 1123 case IK_ObjC: 1124 case IK_PreprocessedObjC: 1125 LangStd = LangStandard::lang_gnu99; 1126 break; 1127 case IK_CXX: 1128 case IK_PreprocessedCXX: 1129 case IK_ObjCXX: 1130 case IK_PreprocessedObjCXX: 1131 LangStd = LangStandard::lang_gnucxx98; 1132 break; 1133 } 1134 } 1135 1136 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1137 Opts.LineComment = Std.hasLineComments(); 1138 Opts.C99 = Std.isC99(); 1139 Opts.C11 = Std.isC11(); 1140 Opts.CPlusPlus = Std.isCPlusPlus(); 1141 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1142 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 1143 Opts.CPlusPlus1z = Std.isCPlusPlus1z(); 1144 Opts.Digraphs = Std.hasDigraphs(); 1145 Opts.GNUMode = Std.isGNUMode(); 1146 Opts.GNUInline = !Std.isC99(); 1147 Opts.HexFloats = Std.hasHexFloats(); 1148 Opts.ImplicitInt = Std.hasImplicitInt(); 1149 1150 // Set OpenCL Version. 1151 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL; 1152 if (LangStd == LangStandard::lang_opencl) 1153 Opts.OpenCLVersion = 100; 1154 else if (LangStd == LangStandard::lang_opencl11) 1155 Opts.OpenCLVersion = 110; 1156 else if (LangStd == LangStandard::lang_opencl12) 1157 Opts.OpenCLVersion = 120; 1158 1159 // OpenCL has some additional defaults. 1160 if (Opts.OpenCL) { 1161 Opts.AltiVec = 0; 1162 Opts.CXXOperatorNames = 1; 1163 Opts.LaxVectorConversions = 0; 1164 Opts.DefaultFPContract = 1; 1165 Opts.NativeHalfType = 1; 1166 } 1167 1168 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA; 1169 1170 // OpenCL and C++ both have bool, true, false keywords. 1171 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1172 1173 // OpenCL has half keyword 1174 Opts.Half = Opts.OpenCL; 1175 1176 // C++ has wchar_t keyword. 1177 Opts.WChar = Opts.CPlusPlus; 1178 1179 Opts.GNUKeywords = Opts.GNUMode; 1180 Opts.CXXOperatorNames = Opts.CPlusPlus; 1181 1182 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1183 // is specified, or -std is set to a conforming mode. 1184 // Trigraphs are disabled by default in c++1z onwards. 1185 Opts.Trigraphs = !Opts.GNUMode && !Opts.CPlusPlus1z; 1186 1187 Opts.DollarIdents = !Opts.AsmPreprocessor; 1188 1189 // C++1y onwards has sized global deallocation functions. 1190 Opts.SizedDeallocation = Opts.CPlusPlus1y; 1191 } 1192 1193 /// Attempt to parse a visibility value out of the given argument. 1194 static Visibility parseVisibility(Arg *arg, ArgList &args, 1195 DiagnosticsEngine &diags) { 1196 StringRef value = arg->getValue(); 1197 if (value == "default") { 1198 return DefaultVisibility; 1199 } else if (value == "hidden") { 1200 return HiddenVisibility; 1201 } else if (value == "protected") { 1202 // FIXME: diagnose if target does not support protected visibility 1203 return ProtectedVisibility; 1204 } 1205 1206 diags.Report(diag::err_drv_invalid_value) 1207 << arg->getAsString(args) << value; 1208 return DefaultVisibility; 1209 } 1210 1211 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) { 1212 auto Arg = Args.getLastArg(OPT_fms_compatibility_version); 1213 if (!Arg) 1214 return 0; 1215 1216 // The MSC versioning scheme involves four versioning components: 1217 // - Major 1218 // - Minor 1219 // - Build 1220 // - Patch 1221 // 1222 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value. 1223 // Additionally, the value may be provided in the form of a more readable 1224 // MM.mm.bbbbb.pp version. 1225 // 1226 // Unfortunately, due to the bit-width limitations, we cannot currently encode 1227 // the value for the patch level. 1228 1229 unsigned VC[4] = {0}; 1230 StringRef Value = Arg->getValue(); 1231 SmallVector<StringRef, 4> Components; 1232 1233 Value.split(Components, ".", llvm::array_lengthof(VC)); 1234 for (unsigned CI = 0, 1235 CE = std::min(Components.size(), llvm::array_lengthof(VC)); 1236 CI < CE; ++CI) { 1237 if (Components[CI].getAsInteger(10, VC[CI])) { 1238 Diags.Report(diag::err_drv_invalid_value) 1239 << Arg->getAsString(Args) << Value; 1240 return 0; 1241 } 1242 } 1243 1244 // FIXME we cannot encode the patch level 1245 return VC[0] * 10000000 + VC[1] * 100000 + VC[2]; 1246 } 1247 1248 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1249 DiagnosticsEngine &Diags) { 1250 // FIXME: Cleanup per-file based stuff. 1251 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1252 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1253 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1254 #define LANGSTANDARD(id, name, desc, features) \ 1255 .Case(name, LangStandard::lang_##id) 1256 #include "clang/Frontend/LangStandards.def" 1257 .Default(LangStandard::lang_unspecified); 1258 if (LangStd == LangStandard::lang_unspecified) 1259 Diags.Report(diag::err_drv_invalid_value) 1260 << A->getAsString(Args) << A->getValue(); 1261 else { 1262 // Valid standard, check to make sure language and standard are 1263 // compatible. 1264 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1265 switch (IK) { 1266 case IK_C: 1267 case IK_ObjC: 1268 case IK_PreprocessedC: 1269 case IK_PreprocessedObjC: 1270 if (!(Std.isC89() || Std.isC99())) 1271 Diags.Report(diag::err_drv_argument_not_allowed_with) 1272 << A->getAsString(Args) << "C/ObjC"; 1273 break; 1274 case IK_CXX: 1275 case IK_ObjCXX: 1276 case IK_PreprocessedCXX: 1277 case IK_PreprocessedObjCXX: 1278 if (!Std.isCPlusPlus()) 1279 Diags.Report(diag::err_drv_argument_not_allowed_with) 1280 << A->getAsString(Args) << "C++/ObjC++"; 1281 break; 1282 case IK_OpenCL: 1283 if (!Std.isC99()) 1284 Diags.Report(diag::err_drv_argument_not_allowed_with) 1285 << A->getAsString(Args) << "OpenCL"; 1286 break; 1287 case IK_CUDA: 1288 if (!Std.isCPlusPlus()) 1289 Diags.Report(diag::err_drv_argument_not_allowed_with) 1290 << A->getAsString(Args) << "CUDA"; 1291 break; 1292 default: 1293 break; 1294 } 1295 } 1296 } 1297 1298 // -cl-std only applies for OpenCL language standards. 1299 // Override the -std option in this case. 1300 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1301 LangStandard::Kind OpenCLLangStd 1302 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1303 .Case("CL", LangStandard::lang_opencl) 1304 .Case("CL1.1", LangStandard::lang_opencl11) 1305 .Case("CL1.2", LangStandard::lang_opencl12) 1306 .Default(LangStandard::lang_unspecified); 1307 1308 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1309 Diags.Report(diag::err_drv_invalid_value) 1310 << A->getAsString(Args) << A->getValue(); 1311 } 1312 else 1313 LangStd = OpenCLLangStd; 1314 } 1315 1316 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1317 1318 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1319 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1320 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1321 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1322 // name, as it doesn't seem a useful distinction. 1323 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1324 Opts.GNUKeywords); 1325 1326 if (Args.hasArg(OPT_fno_operator_names)) 1327 Opts.CXXOperatorNames = 0; 1328 1329 if (Opts.ObjC1) { 1330 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1331 StringRef value = arg->getValue(); 1332 if (Opts.ObjCRuntime.tryParse(value)) 1333 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1334 } 1335 1336 if (Args.hasArg(OPT_fobjc_gc_only)) 1337 Opts.setGC(LangOptions::GCOnly); 1338 else if (Args.hasArg(OPT_fobjc_gc)) 1339 Opts.setGC(LangOptions::HybridGC); 1340 else if (Args.hasArg(OPT_fobjc_arc)) { 1341 Opts.ObjCAutoRefCount = 1; 1342 if (!Opts.ObjCRuntime.allowsARC()) 1343 Diags.Report(diag::err_arc_unsupported_on_runtime); 1344 1345 // Only set ObjCARCWeak if ARC is enabled. 1346 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1347 Opts.ObjCARCWeak = 1; 1348 else 1349 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1350 } 1351 1352 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1353 Opts.ObjCInferRelatedResultType = 0; 1354 1355 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1356 Opts.ObjCSubscriptingLegacyRuntime = 1357 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1358 } 1359 1360 if (Args.hasArg(OPT_fgnu89_inline)) 1361 Opts.GNUInline = 1; 1362 1363 if (Args.hasArg(OPT_fapple_kext)) { 1364 if (!Opts.CPlusPlus) 1365 Diags.Report(diag::warn_c_kext); 1366 else 1367 Opts.AppleKext = 1; 1368 } 1369 1370 if (Args.hasArg(OPT_print_ivar_layout)) 1371 Opts.ObjCGCBitmapPrint = 1; 1372 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1373 Opts.NoConstantCFStrings = 1; 1374 1375 if (Args.hasArg(OPT_faltivec)) 1376 Opts.AltiVec = 1; 1377 1378 if (Args.hasArg(OPT_pthread)) 1379 Opts.POSIXThreads = 1; 1380 1381 // The value-visibility mode defaults to "default". 1382 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1383 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1384 } else { 1385 Opts.setValueVisibilityMode(DefaultVisibility); 1386 } 1387 1388 // The type-visibility mode defaults to the value-visibility mode. 1389 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1390 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1391 } else { 1392 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1393 } 1394 1395 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1396 Opts.InlineVisibilityHidden = 1; 1397 1398 if (Args.hasArg(OPT_ftrapv)) { 1399 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1400 // Set the handler, if one is specified. 1401 Opts.OverflowHandler = 1402 Args.getLastArgValue(OPT_ftrapv_handler); 1403 } 1404 else if (Args.hasArg(OPT_fwrapv)) 1405 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1406 1407 if (Args.hasArg(OPT_trigraphs)) 1408 Opts.Trigraphs = 1; 1409 1410 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1411 OPT_fno_dollars_in_identifiers, 1412 Opts.DollarIdents); 1413 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1414 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility); 1415 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions); 1416 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1417 Opts.MSCompatibilityVersion = parseMSCVersion(Args, Diags); 1418 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags); 1419 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1420 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1421 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1422 Opts.ConstStrings); 1423 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1424 Opts.LaxVectorConversions = 0; 1425 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1426 Opts.ThreadsafeStatics = 0; 1427 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1428 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1429 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1430 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1431 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1432 1433 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1434 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data); 1435 Opts.Blocks = Args.hasArg(OPT_fblocks); 1436 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1437 Opts.Modules = Args.hasArg(OPT_fmodules); 1438 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse); 1439 Opts.ModulesDeclUse = 1440 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse; 1441 Opts.ModulesSearchAll = Opts.Modules && 1442 !Args.hasArg(OPT_fno_modules_search_all) && 1443 Args.hasArg(OPT_fmodules_search_all); 1444 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery); 1445 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1446 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1447 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false); 1448 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1449 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1450 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1451 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1452 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1453 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation); 1454 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1455 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1456 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1457 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1458 Opts.InstantiationDepth = 1459 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1460 Opts.ArrowDepth = 1461 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1462 Opts.ConstexprCallDepth = 1463 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1464 Opts.ConstexprStepLimit = 1465 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1466 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1467 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1468 Opts.NumLargeByValueCopy = 1469 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1470 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1471 Opts.ObjCConstantStringClass = 1472 Args.getLastArgValue(OPT_fconstant_string_class); 1473 Opts.ObjCDefaultSynthProperties = 1474 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1475 Opts.EncodeExtendedBlockSig = 1476 Args.hasArg(OPT_fencode_extended_block_signature); 1477 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1478 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1479 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1480 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1481 Opts.Static = Args.hasArg(OPT_static_define); 1482 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1483 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1484 || Args.hasArg(OPT_fdump_record_layouts); 1485 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1486 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1487 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1488 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1489 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1490 Opts.MRTD = Args.hasArg(OPT_mrtd); 1491 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1492 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1493 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1494 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1495 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1496 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1497 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1498 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1499 Opts.ImplementationOfModule = 1500 Args.getLastArgValue(OPT_fmodule_implementation_of); 1501 1502 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() && 1503 Opts.CurrentModule != Opts.ImplementationOfModule) { 1504 Diags.Report(diag::err_conflicting_module_names) 1505 << Opts.CurrentModule << Opts.ImplementationOfModule; 1506 } 1507 1508 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1509 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1510 .Case("target", LangOptions::ASMM_Target) 1511 .Case("no", LangOptions::ASMM_Off) 1512 .Case("yes", LangOptions::ASMM_On) 1513 .Default(255)) { 1514 default: 1515 Diags.Report(diag::err_drv_invalid_value) 1516 << "-faddress-space-map-mangling=" << A->getValue(); 1517 break; 1518 case LangOptions::ASMM_Target: 1519 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1520 break; 1521 case LangOptions::ASMM_On: 1522 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1523 break; 1524 case LangOptions::ASMM_Off: 1525 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1526 break; 1527 } 1528 } 1529 1530 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) { 1531 LangOptions::PragmaMSPointersToMembersKind InheritanceModel = 1532 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>( 1533 A->getValue()) 1534 .Case("single", 1535 LangOptions::PPTMK_FullGeneralitySingleInheritance) 1536 .Case("multiple", 1537 LangOptions::PPTMK_FullGeneralityMultipleInheritance) 1538 .Case("virtual", 1539 LangOptions::PPTMK_FullGeneralityVirtualInheritance) 1540 .Default(LangOptions::PPTMK_BestCase); 1541 if (InheritanceModel == LangOptions::PPTMK_BestCase) 1542 Diags.Report(diag::err_drv_invalid_value) 1543 << "-fms-memptr-rep=" << A->getValue(); 1544 1545 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel); 1546 } 1547 1548 // Check if -fopenmp= is specified. 1549 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) { 1550 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue()) 1551 .Case("libiomp5", true) 1552 .Default(false); 1553 } 1554 1555 // Record whether the __DEPRECATED define was requested. 1556 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1557 OPT_fno_deprecated_macro, 1558 Opts.Deprecated); 1559 1560 // FIXME: Eliminate this dependency. 1561 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1562 OptSize = getOptimizationLevelSize(Args); 1563 Opts.Optimize = Opt != 0; 1564 Opts.OptimizeSize = OptSize != 0; 1565 1566 // This is the __NO_INLINE__ define, which just depends on things like the 1567 // optimization level and -fno-inline, not actually whether the backend has 1568 // inlining enabled. 1569 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1570 1571 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1572 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1573 1574 Opts.RetainCommentsFromSystemHeaders = 1575 Args.hasArg(OPT_fretain_comments_from_system_headers); 1576 1577 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1578 switch (SSP) { 1579 default: 1580 Diags.Report(diag::err_drv_invalid_value) 1581 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1582 break; 1583 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1584 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1585 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break; 1586 case 3: Opts.setStackProtector(LangOptions::SSPReq); break; 1587 } 1588 1589 // Parse -fsanitize= arguments. 1590 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1591 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1592 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1593 // efficiently map string values to them. Perform the mapping indirectly: 1594 // convert strings to enumerated values, then switch over the enum to set 1595 // the right bitfield value. 1596 enum Sanitizer { 1597 #define SANITIZER(NAME, ID) \ 1598 ID, 1599 #include "clang/Basic/Sanitizers.def" 1600 Unknown 1601 }; 1602 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1603 #define SANITIZER(NAME, ID) \ 1604 .Case(NAME, ID) 1605 #include "clang/Basic/Sanitizers.def" 1606 .Default(Unknown)) { 1607 #define SANITIZER(NAME, ID) \ 1608 case ID: \ 1609 Opts.Sanitize.ID = true; \ 1610 break; 1611 #include "clang/Basic/Sanitizers.def" 1612 1613 case Unknown: 1614 Diags.Report(diag::err_drv_invalid_value) 1615 << "-fsanitize=" << Sanitizers[I]; 1616 break; 1617 } 1618 } 1619 } 1620 1621 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1622 FileManager &FileMgr, 1623 DiagnosticsEngine &Diags) { 1624 using namespace options; 1625 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1626 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1627 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1628 Opts.TokenCache = A->getValue(); 1629 else 1630 Opts.TokenCache = Opts.ImplicitPTHInclude; 1631 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1632 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1633 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1634 1635 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1636 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1637 ie = Args.filtered_end(); it != ie; ++it) { 1638 const Arg *A = *it; 1639 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1640 } 1641 1642 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1643 StringRef Value(A->getValue()); 1644 size_t Comma = Value.find(','); 1645 unsigned Bytes = 0; 1646 unsigned EndOfLine = 0; 1647 1648 if (Comma == StringRef::npos || 1649 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1650 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1651 Diags.Report(diag::err_drv_preamble_format); 1652 else { 1653 Opts.PrecompiledPreambleBytes.first = Bytes; 1654 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1655 } 1656 } 1657 1658 // Add macros from the command line. 1659 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1660 ie = Args.filtered_end(); it != ie; ++it) { 1661 if ((*it)->getOption().matches(OPT_D)) 1662 Opts.addMacroDef((*it)->getValue()); 1663 else 1664 Opts.addMacroUndef((*it)->getValue()); 1665 } 1666 1667 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1668 1669 // Add the ordered list of -includes. 1670 for (arg_iterator it = Args.filtered_begin(OPT_include), 1671 ie = Args.filtered_end(); it != ie; ++it) { 1672 const Arg *A = *it; 1673 Opts.Includes.push_back(A->getValue()); 1674 } 1675 1676 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1677 ie = Args.filtered_end(); it != ie; ++it) { 1678 const Arg *A = *it; 1679 Opts.ChainedIncludes.push_back(A->getValue()); 1680 } 1681 1682 // Include 'altivec.h' if -faltivec option present 1683 if (Args.hasArg(OPT_faltivec)) 1684 Opts.Includes.push_back("altivec.h"); 1685 1686 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1687 ie = Args.filtered_end(); it != ie; ++it) { 1688 const Arg *A = *it; 1689 std::pair<StringRef,StringRef> Split = 1690 StringRef(A->getValue()).split(';'); 1691 1692 if (Split.second.empty()) { 1693 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1694 continue; 1695 } 1696 1697 Opts.addRemappedFile(Split.first, Split.second); 1698 } 1699 1700 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1701 StringRef Name = A->getValue(); 1702 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1703 .Case("libc++", ARCXX_libcxx) 1704 .Case("libstdc++", ARCXX_libstdcxx) 1705 .Case("none", ARCXX_nolib) 1706 .Default(~0U); 1707 if (Library == ~0U) 1708 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1709 else 1710 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1711 } 1712 } 1713 1714 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1715 ArgList &Args, 1716 frontend::ActionKind Action) { 1717 using namespace options; 1718 1719 switch (Action) { 1720 case frontend::ASTDeclList: 1721 case frontend::ASTDump: 1722 case frontend::ASTPrint: 1723 case frontend::ASTView: 1724 case frontend::EmitAssembly: 1725 case frontend::EmitBC: 1726 case frontend::EmitHTML: 1727 case frontend::EmitLLVM: 1728 case frontend::EmitLLVMOnly: 1729 case frontend::EmitCodeGenOnly: 1730 case frontend::EmitObj: 1731 case frontend::FixIt: 1732 case frontend::GenerateModule: 1733 case frontend::GeneratePCH: 1734 case frontend::GeneratePTH: 1735 case frontend::ParseSyntaxOnly: 1736 case frontend::ModuleFileInfo: 1737 case frontend::VerifyPCH: 1738 case frontend::PluginAction: 1739 case frontend::PrintDeclContext: 1740 case frontend::RewriteObjC: 1741 case frontend::RewriteTest: 1742 case frontend::RunAnalysis: 1743 case frontend::MigrateSource: 1744 Opts.ShowCPP = 0; 1745 break; 1746 1747 case frontend::DumpRawTokens: 1748 case frontend::DumpTokens: 1749 case frontend::InitOnly: 1750 case frontend::PrintPreamble: 1751 case frontend::PrintPreprocessedInput: 1752 case frontend::RewriteMacros: 1753 case frontend::RunPreprocessorOnly: 1754 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1755 break; 1756 } 1757 1758 Opts.ShowComments = Args.hasArg(OPT_C); 1759 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1760 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1761 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1762 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1763 } 1764 1765 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1766 using namespace options; 1767 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1768 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1769 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1770 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1771 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1772 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1773 1774 // Use the default target triple if unspecified. 1775 if (Opts.Triple.empty()) 1776 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1777 } 1778 1779 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1780 const char *const *ArgBegin, 1781 const char *const *ArgEnd, 1782 DiagnosticsEngine &Diags) { 1783 bool Success = true; 1784 1785 // Parse the arguments. 1786 std::unique_ptr<OptTable> Opts(createDriverOptTable()); 1787 const unsigned IncludedFlagsBitmask = options::CC1Option; 1788 unsigned MissingArgIndex, MissingArgCount; 1789 std::unique_ptr<InputArgList> Args( 1790 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount, 1791 IncludedFlagsBitmask)); 1792 1793 // Check for missing argument error. 1794 if (MissingArgCount) { 1795 Diags.Report(diag::err_drv_missing_argument) 1796 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1797 Success = false; 1798 } 1799 1800 // Issue errors on unknown arguments. 1801 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1802 ie = Args->filtered_end(); it != ie; ++it) { 1803 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1804 Success = false; 1805 } 1806 1807 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1808 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1809 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1810 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1811 && Success; 1812 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1813 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1814 // FIXME: We shouldn't have to pass the DashX option around here 1815 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1816 ParseTargetArgs(Res.getTargetOpts(), *Args); 1817 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags, 1818 Res.getTargetOpts()) && Success; 1819 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1820 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1821 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1822 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1823 Res.getLangOpts()->ObjCExceptions = 1; 1824 } 1825 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1826 // PCH file and find the original header name. Remove the need to do that in 1827 // ParsePreprocessorArgs and remove the FileManager 1828 // parameters from the function and the "FileManager.h" #include. 1829 FileManager FileMgr(Res.getFileSystemOpts()); 1830 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1831 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1832 Res.getFrontendOpts().ProgramAction); 1833 return Success; 1834 } 1835 1836 namespace { 1837 1838 class ModuleSignature { 1839 SmallVector<uint64_t, 16> Data; 1840 unsigned CurBit; 1841 uint64_t CurValue; 1842 1843 public: 1844 ModuleSignature() : CurBit(0), CurValue(0) { } 1845 1846 void add(uint64_t Value, unsigned Bits); 1847 void add(StringRef Value); 1848 void flush(); 1849 1850 llvm::APInt getAsInteger() const; 1851 }; 1852 } 1853 1854 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1855 CurValue |= Value << CurBit; 1856 if (CurBit + NumBits < 64) { 1857 CurBit += NumBits; 1858 return; 1859 } 1860 1861 // Add the current word. 1862 Data.push_back(CurValue); 1863 1864 if (CurBit) 1865 CurValue = Value >> (64-CurBit); 1866 else 1867 CurValue = 0; 1868 CurBit = (CurBit+NumBits) & 63; 1869 } 1870 1871 void ModuleSignature::flush() { 1872 if (CurBit == 0) 1873 return; 1874 1875 Data.push_back(CurValue); 1876 CurBit = 0; 1877 CurValue = 0; 1878 } 1879 1880 void ModuleSignature::add(StringRef Value) { 1881 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1882 add(*I, 8); 1883 } 1884 1885 llvm::APInt ModuleSignature::getAsInteger() const { 1886 return llvm::APInt(Data.size() * 64, Data); 1887 } 1888 1889 std::string CompilerInvocation::getModuleHash() const { 1890 // Note: For QoI reasons, the things we use as a hash here should all be 1891 // dumped via the -module-info flag. 1892 using llvm::hash_code; 1893 using llvm::hash_value; 1894 using llvm::hash_combine; 1895 1896 // Start the signature with the compiler version. 1897 // FIXME: We'd rather use something more cryptographically sound than 1898 // CityHash, but this will do for now. 1899 hash_code code = hash_value(getClangFullRepositoryVersion()); 1900 1901 // Extend the signature with the language options 1902 #define LANGOPT(Name, Bits, Default, Description) \ 1903 code = hash_combine(code, LangOpts->Name); 1904 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1905 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1906 #define BENIGN_LANGOPT(Name, Bits, Default, Description) 1907 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1908 #include "clang/Basic/LangOptions.def" 1909 1910 // Extend the signature with the target options. 1911 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1912 TargetOpts->ABI); 1913 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1914 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1915 1916 // Extend the signature with preprocessor options. 1917 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1918 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1919 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1920 1921 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1922 I = getPreprocessorOpts().Macros.begin(), 1923 IEnd = getPreprocessorOpts().Macros.end(); 1924 I != IEnd; ++I) { 1925 // If we're supposed to ignore this macro for the purposes of modules, 1926 // don't put it into the hash. 1927 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1928 // Check whether we're ignoring this macro. 1929 StringRef MacroDef = I->first; 1930 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1931 continue; 1932 } 1933 1934 code = hash_combine(code, I->first, I->second); 1935 } 1936 1937 // Extend the signature with the sysroot. 1938 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1939 hsOpts.UseStandardSystemIncludes, 1940 hsOpts.UseStandardCXXIncludes, 1941 hsOpts.UseLibcxx); 1942 code = hash_combine(code, hsOpts.ResourceDir); 1943 1944 // Extend the signature with the user build path. 1945 code = hash_combine(code, hsOpts.ModuleUserBuildPath); 1946 1947 // Darwin-specific hack: if we have a sysroot, use the contents and 1948 // modification time of 1949 // $sysroot/System/Library/CoreServices/SystemVersion.plist 1950 // as part of the module hash. 1951 if (!hsOpts.Sysroot.empty()) { 1952 SmallString<128> systemVersionFile; 1953 systemVersionFile += hsOpts.Sysroot; 1954 llvm::sys::path::append(systemVersionFile, "System"); 1955 llvm::sys::path::append(systemVersionFile, "Library"); 1956 llvm::sys::path::append(systemVersionFile, "CoreServices"); 1957 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 1958 1959 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer = 1960 llvm::MemoryBuffer::getFile(systemVersionFile.str()); 1961 if (buffer) { 1962 code = hash_combine(code, buffer.get()->getBuffer()); 1963 1964 struct stat statBuf; 1965 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 1966 code = hash_combine(code, statBuf.st_mtime); 1967 } 1968 } 1969 1970 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1971 } 1972 1973 namespace clang { 1974 1975 template<typename IntTy> 1976 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id, 1977 IntTy Default, 1978 DiagnosticsEngine *Diags) { 1979 IntTy Res = Default; 1980 if (Arg *A = Args.getLastArg(Id)) { 1981 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 1982 if (Diags) 1983 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 1984 << A->getValue(); 1985 } 1986 } 1987 return Res; 1988 } 1989 1990 1991 // Declared in clang/Frontend/Utils.h. 1992 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 1993 DiagnosticsEngine *Diags) { 1994 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags); 1995 } 1996 1997 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id, 1998 uint64_t Default, 1999 DiagnosticsEngine *Diags) { 2000 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags); 2001 } 2002 2003 void BuryPointer(const void *Ptr) { 2004 // This function may be called only a small fixed amount of times per each 2005 // invocation, otherwise we do actually have a leak which we want to report. 2006 // If this function is called more than kGraveYardMaxSize times, the pointers 2007 // will not be properly buried and a leak detector will report a leak, which 2008 // is what we want in such case. 2009 static const size_t kGraveYardMaxSize = 16; 2010 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize]; 2011 static std::atomic<unsigned> GraveYardSize; 2012 unsigned Idx = GraveYardSize++; 2013 if (Idx >= kGraveYardMaxSize) 2014 return; 2015 GraveYard[Idx] = Ptr; 2016 } 2017 2018 IntrusiveRefCntPtr<vfs::FileSystem> 2019 createVFSFromCompilerInvocation(const CompilerInvocation &CI, 2020 DiagnosticsEngine &Diags) { 2021 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) 2022 return vfs::getRealFileSystem(); 2023 2024 IntrusiveRefCntPtr<vfs::OverlayFileSystem> 2025 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem())); 2026 // earlier vfs files are on the bottom 2027 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) { 2028 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = 2029 llvm::MemoryBuffer::getFile(File); 2030 if (!Buffer) { 2031 Diags.Report(diag::err_missing_vfs_overlay_file) << File; 2032 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2033 } 2034 2035 IntrusiveRefCntPtr<vfs::FileSystem> FS = 2036 vfs::getVFSFromYAML(Buffer->release(), /*DiagHandler*/ nullptr); 2037 if (!FS.get()) { 2038 Diags.Report(diag::err_invalid_vfs_overlay) << File; 2039 return IntrusiveRefCntPtr<vfs::FileSystem>(); 2040 } 2041 Overlay->pushOverlay(FS); 2042 } 2043 return Overlay; 2044 } 2045 } // end namespace clang 2046