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