CompilerInvocation.cpp revision 269011
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/Diagnostic.h" 12#include "clang/Basic/FileManager.h" 13#include "clang/Basic/Version.h" 14#include "clang/Driver/DriverDiagnostic.h" 15#include "clang/Driver/Options.h" 16#include "clang/Driver/Util.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/OwningPtr.h" 23#include "llvm/ADT/SmallVector.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/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 <sys/stat.h> 38using namespace clang; 39 40//===----------------------------------------------------------------------===// 41// Initialization. 42//===----------------------------------------------------------------------===// 43 44CompilerInvocationBase::CompilerInvocationBase() 45 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()), 46 DiagnosticOpts(new DiagnosticOptions()), 47 HeaderSearchOpts(new HeaderSearchOptions()), 48 PreprocessorOpts(new PreprocessorOptions()) {} 49 50CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X) 51 : RefCountedBase<CompilerInvocation>(), 52 LangOpts(new LangOptions(*X.getLangOpts())), 53 TargetOpts(new TargetOptions(X.getTargetOpts())), 54 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())), 55 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())), 56 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {} 57 58//===----------------------------------------------------------------------===// 59// Deserialization (from args) 60//===----------------------------------------------------------------------===// 61 62using namespace clang::driver; 63using namespace clang::driver::options; 64using namespace llvm::opt; 65 66// 67 68static unsigned getOptimizationLevel(ArgList &Args, InputKind IK, 69 DiagnosticsEngine &Diags) { 70 unsigned DefaultOpt = 0; 71 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable)) 72 DefaultOpt = 2; 73 74 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 75 if (A->getOption().matches(options::OPT_O0)) 76 return 0; 77 78 if (A->getOption().matches(options::OPT_Ofast)) 79 return 3; 80 81 assert (A->getOption().matches(options::OPT_O)); 82 83 StringRef S(A->getValue()); 84 if (S == "s" || S == "z" || S.empty()) 85 return 2; 86 87 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags); 88 } 89 90 return DefaultOpt; 91} 92 93static unsigned getOptimizationLevelSize(ArgList &Args) { 94 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) { 95 if (A->getOption().matches(options::OPT_O)) { 96 switch (A->getValue()[0]) { 97 default: 98 return 0; 99 case 's': 100 return 1; 101 case 'z': 102 return 2; 103 } 104 } 105 } 106 return 0; 107} 108 109static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) { 110 for (arg_iterator I = Args.filtered_begin(OPT_W_Group), 111 E = Args.filtered_end(); I != E; ++I) { 112 Arg *A = *I; 113 // If the argument is a pure flag, add its name (minus the "W" at the beginning) 114 // to the warning list. Else, add its value (for the OPT_W case). 115 if (A->getOption().getKind() == Option::FlagClass) { 116 Warnings.push_back(A->getOption().getName().substr(1)); 117 } else { 118 for (unsigned Idx = 0, End = A->getNumValues(); 119 Idx < End; ++Idx) { 120 StringRef V = A->getValue(Idx); 121 // "-Wl," and such are not warning options. 122 // FIXME: Should be handled by putting these in separate flags. 123 if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,")) 124 continue; 125 126 Warnings.push_back(V); 127 } 128 } 129 } 130} 131 132static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args, 133 DiagnosticsEngine &Diags) { 134 using namespace options; 135 bool Success = true; 136 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) { 137 StringRef Name = A->getValue(); 138 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name) 139#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \ 140 .Case(CMDFLAG, NAME##Model) 141#include "clang/StaticAnalyzer/Core/Analyses.def" 142 .Default(NumStores); 143 if (Value == NumStores) { 144 Diags.Report(diag::err_drv_invalid_value) 145 << A->getAsString(Args) << Name; 146 Success = false; 147 } else { 148 Opts.AnalysisStoreOpt = Value; 149 } 150 } 151 152 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) { 153 StringRef Name = A->getValue(); 154 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name) 155#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \ 156 .Case(CMDFLAG, NAME##Model) 157#include "clang/StaticAnalyzer/Core/Analyses.def" 158 .Default(NumConstraints); 159 if (Value == NumConstraints) { 160 Diags.Report(diag::err_drv_invalid_value) 161 << A->getAsString(Args) << Name; 162 Success = false; 163 } else { 164 Opts.AnalysisConstraintsOpt = Value; 165 } 166 } 167 168 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) { 169 StringRef Name = A->getValue(); 170 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name) 171#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \ 172 .Case(CMDFLAG, PD_##NAME) 173#include "clang/StaticAnalyzer/Core/Analyses.def" 174 .Default(NUM_ANALYSIS_DIAG_CLIENTS); 175 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) { 176 Diags.Report(diag::err_drv_invalid_value) 177 << A->getAsString(Args) << Name; 178 Success = false; 179 } else { 180 Opts.AnalysisDiagOpt = Value; 181 } 182 } 183 184 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) { 185 StringRef Name = A->getValue(); 186 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name) 187#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \ 188 .Case(CMDFLAG, NAME) 189#include "clang/StaticAnalyzer/Core/Analyses.def" 190 .Default(NumPurgeModes); 191 if (Value == NumPurgeModes) { 192 Diags.Report(diag::err_drv_invalid_value) 193 << A->getAsString(Args) << Name; 194 Success = false; 195 } else { 196 Opts.AnalysisPurgeOpt = Value; 197 } 198 } 199 200 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) { 201 StringRef Name = A->getValue(); 202 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name) 203#define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \ 204 .Case(CMDFLAG, NAME) 205#include "clang/StaticAnalyzer/Core/Analyses.def" 206 .Default(NumInliningModes); 207 if (Value == NumInliningModes) { 208 Diags.Report(diag::err_drv_invalid_value) 209 << A->getAsString(Args) << Name; 210 Success = false; 211 } else { 212 Opts.InliningMode = Value; 213 } 214 } 215 216 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help); 217 Opts.visualizeExplodedGraphWithGraphViz = 218 Args.hasArg(OPT_analyzer_viz_egraph_graphviz); 219 Opts.visualizeExplodedGraphWithUbiGraph = 220 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph); 221 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted); 222 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers); 223 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress); 224 Opts.AnalyzeNestedBlocks = 225 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks); 226 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume); 227 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function); 228 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG); 229 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph); 230 Opts.maxBlockVisitOnPath = 231 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags); 232 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats); 233 Opts.InlineMaxStackDepth = 234 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth, 235 Opts.InlineMaxStackDepth, Diags); 236 237 Opts.CheckersControlList.clear(); 238 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker, 239 OPT_analyzer_disable_checker), 240 ie = Args.filtered_end(); it != ie; ++it) { 241 const Arg *A = *it; 242 A->claim(); 243 bool enable = (A->getOption().getID() == OPT_analyzer_checker); 244 // We can have a list of comma separated checker names, e.g: 245 // '-analyzer-checker=cocoa,unix' 246 StringRef checkerList = A->getValue(); 247 SmallVector<StringRef, 4> checkers; 248 checkerList.split(checkers, ","); 249 for (unsigned i = 0, e = checkers.size(); i != e; ++i) 250 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable)); 251 } 252 253 // Go through the analyzer configuration options. 254 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config), 255 ie = Args.filtered_end(); it != ie; ++it) { 256 const Arg *A = *it; 257 A->claim(); 258 // We can have a list of comma separated config names, e.g: 259 // '-analyzer-config key1=val1,key2=val2' 260 StringRef configList = A->getValue(); 261 SmallVector<StringRef, 4> configVals; 262 configList.split(configVals, ","); 263 for (unsigned i = 0, e = configVals.size(); i != e; ++i) { 264 StringRef key, val; 265 llvm::tie(key, val) = configVals[i].split("="); 266 if (val.empty()) { 267 Diags.Report(SourceLocation(), 268 diag::err_analyzer_config_no_value) << configVals[i]; 269 Success = false; 270 break; 271 } 272 if (val.find('=') != StringRef::npos) { 273 Diags.Report(SourceLocation(), 274 diag::err_analyzer_config_multiple_values) 275 << configVals[i]; 276 Success = false; 277 break; 278 } 279 Opts.Config[key] = val; 280 } 281 } 282 283 return Success; 284} 285 286static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) { 287 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error); 288 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal); 289 return true; 290} 291 292static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) { 293 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands); 294 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments); 295} 296 297static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, 298 DiagnosticsEngine &Diags, 299 const TargetOptions &TargetOpts) { 300 using namespace options; 301 bool Success = true; 302 303 Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags); 304 // TODO: This could be done in Driver 305 unsigned MaxOptLevel = 3; 306 if (Opts.OptimizationLevel > MaxOptLevel) { 307 // If the optimization level is not supported, fall back on the default optimization 308 Diags.Report(diag::warn_drv_optimization_value) 309 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel; 310 Opts.OptimizationLevel = MaxOptLevel; 311 } 312 313 // We must always run at least the always inlining pass. 314 Opts.setInlining( 315 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining 316 : CodeGenOptions::OnlyAlwaysInlining); 317 // -fno-inline-functions overrides OptimizationLevel > 1. 318 Opts.NoInline = Args.hasArg(OPT_fno_inline); 319 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ? 320 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining()); 321 322 if (Args.hasArg(OPT_gline_tables_only)) { 323 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly); 324 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) || 325 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) { 326 bool Default = false; 327 // Until dtrace (via CTF) can deal with distributed debug info, 328 // Darwin defaults to standalone/full debug info. 329 if (llvm::Triple(TargetOpts.Triple).isOSDarwin()) 330 Default = true; 331 332 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default)) 333 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo); 334 else 335 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo); 336 } 337 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info); 338 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file); 339 if (Args.hasArg(OPT_gdwarf_2)) 340 Opts.DwarfVersion = 2; 341 else if (Args.hasArg(OPT_gdwarf_3)) 342 Opts.DwarfVersion = 3; 343 else if (Args.hasArg(OPT_gdwarf_4)) 344 Opts.DwarfVersion = 4; 345 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo) 346 // Default Dwarf version is 4 if we are generating debug information. 347 Opts.DwarfVersion = 4; 348 349 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns); 350 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone); 351 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables); 352 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg( 353 OPT_fuse_register_sized_bitfield_access); 354 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing); 355 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa); 356 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags); 357 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants); 358 Opts.NoCommon = Args.hasArg(OPT_fno_common); 359 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float); 360 Opts.OptimizeSize = getOptimizationLevelSize(Args); 361 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) || 362 Args.hasArg(OPT_ffreestanding)); 363 Opts.UnrollLoops = 364 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops, 365 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize)); 366 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops); 367 368 Opts.Autolink = !Args.hasArg(OPT_fno_autolink); 369 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ); 370 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose); 371 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions); 372 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device); 373 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit); 374 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases); 375 Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model); 376 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass); 377 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim); 378 Opts.DisableFree = Args.hasArg(OPT_disable_free); 379 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls); 380 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi); 381 Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables); 382 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable); 383 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision); 384 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) || 385 Args.hasArg(OPT_cl_finite_math_only)|| 386 Args.hasArg(OPT_cl_fast_relaxed_math)); 387 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) || 388 Args.hasArg(OPT_cl_finite_math_only)|| 389 Args.hasArg(OPT_cl_fast_relaxed_math)); 390 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss); 391 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option); 392 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags); 393 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge); 394 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack); 395 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks); 396 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all); 397 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer); 398 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels); 399 Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm); 400 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm); 401 Opts.SoftFloat = Args.hasArg(OPT_msoft_float); 402 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums); 403 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) || 404 Args.hasArg(OPT_cl_unsafe_math_optimizations) || 405 Args.hasArg(OPT_cl_fast_relaxed_math); 406 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables); 407 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic"); 408 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ); 409 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array); 410 411 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections, 412 OPT_fno_function_sections, false); 413 Opts.DataSections = Args.hasFlag(OPT_fdata_sections, 414 OPT_fno_data_sections, false); 415 416 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive); 417 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops); 418 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp); 419 420 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name); 421 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier); 422 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover); 423 424 Opts.DisableGCov = Args.hasArg(OPT_test_coverage); 425 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data); 426 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes); 427 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) { 428 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file); 429 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum); 430 Opts.CoverageNoFunctionNamesInData = 431 Args.hasArg(OPT_coverage_no_function_names_in_data); 432 if (Args.hasArg(OPT_coverage_version_EQ)) { 433 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ); 434 if (CoverageVersion.size() != 4) { 435 Diags.Report(diag::err_drv_invalid_value) 436 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args) 437 << CoverageVersion; 438 } else { 439 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4); 440 } 441 } 442 } 443 444 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions); 445 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg); 446 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info); 447 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir); 448 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file); 449 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist); 450 Opts.SanitizeMemoryTrackOrigins = 451 Args.hasArg(OPT_fsanitize_memory_track_origins); 452 Opts.SanitizeAddressZeroBaseShadow = 453 Args.hasArg(OPT_fsanitize_address_zero_base_shadow); 454 Opts.SanitizeUndefinedTrapOnError = 455 Args.hasArg(OPT_fsanitize_undefined_trap_on_error); 456 Opts.SSPBufferSize = 457 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags); 458 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign); 459 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) { 460 StringRef Val = A->getValue(); 461 unsigned StackAlignment = Opts.StackAlignment; 462 Val.getAsInteger(10, StackAlignment); 463 Opts.StackAlignment = StackAlignment; 464 } 465 466 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) { 467 StringRef Name = A->getValue(); 468 unsigned Method = llvm::StringSwitch<unsigned>(Name) 469 .Case("legacy", CodeGenOptions::Legacy) 470 .Case("non-legacy", CodeGenOptions::NonLegacy) 471 .Case("mixed", CodeGenOptions::Mixed) 472 .Default(~0U); 473 if (Method == ~0U) { 474 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 475 Success = false; 476 } else { 477 Opts.setObjCDispatchMethod( 478 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method)); 479 } 480 } 481 482 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) { 483 StringRef Name = A->getValue(); 484 unsigned Model = llvm::StringSwitch<unsigned>(Name) 485 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel) 486 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel) 487 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel) 488 .Case("local-exec", CodeGenOptions::LocalExecTLSModel) 489 .Default(~0U); 490 if (Model == ~0U) { 491 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 492 Success = false; 493 } else { 494 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model)); 495 } 496 } 497 498 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) { 499 StringRef Val = A->getValue(); 500 if (Val == "fast") 501 Opts.setFPContractMode(CodeGenOptions::FPC_Fast); 502 else if (Val == "on") 503 Opts.setFPContractMode(CodeGenOptions::FPC_On); 504 else if (Val == "off") 505 Opts.setFPContractMode(CodeGenOptions::FPC_Off); 506 else 507 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; 508 } 509 510 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) { 511 if (A->getOption().matches(OPT_fpcc_struct_return)) { 512 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack); 513 } else { 514 assert(A->getOption().matches(OPT_freg_struct_return)); 515 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs); 516 } 517 } 518 519 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib); 520 521 return Success; 522} 523 524static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts, 525 ArgList &Args) { 526 using namespace options; 527 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file); 528 Opts.Targets = Args.getAllArgValues(OPT_MT); 529 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps); 530 Opts.UsePhonyTargets = Args.hasArg(OPT_MP); 531 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H); 532 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file); 533 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG); 534 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes); 535 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot); 536} 537 538bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args, 539 DiagnosticsEngine *Diags) { 540 using namespace options; 541 bool Success = true; 542 543 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file); 544 Opts.DiagnosticSerializationFile = 545 Args.getLastArgValue(OPT_diagnostic_serialized_file); 546 Opts.IgnoreWarnings = Args.hasArg(OPT_w); 547 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros); 548 Opts.Pedantic = Args.hasArg(OPT_pedantic); 549 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors); 550 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics); 551 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics); 552 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column, 553 OPT_fno_show_column, 554 /*Default=*/true); 555 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info); 556 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location); 557 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option); 558 559 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes)); 560 561 // Default behavior is to not to show note include stacks. 562 Opts.ShowNoteIncludeStack = false; 563 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack, 564 OPT_fno_diagnostics_show_note_include_stack)) 565 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack)) 566 Opts.ShowNoteIncludeStack = true; 567 568 StringRef ShowOverloads = 569 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all"); 570 if (ShowOverloads == "best") 571 Opts.setShowOverloads(Ovl_Best); 572 else if (ShowOverloads == "all") 573 Opts.setShowOverloads(Ovl_All); 574 else { 575 Success = false; 576 if (Diags) 577 Diags->Report(diag::err_drv_invalid_value) 578 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args) 579 << ShowOverloads; 580 } 581 582 StringRef ShowCategory = 583 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none"); 584 if (ShowCategory == "none") 585 Opts.ShowCategories = 0; 586 else if (ShowCategory == "id") 587 Opts.ShowCategories = 1; 588 else if (ShowCategory == "name") 589 Opts.ShowCategories = 2; 590 else { 591 Success = false; 592 if (Diags) 593 Diags->Report(diag::err_drv_invalid_value) 594 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args) 595 << ShowCategory; 596 } 597 598 StringRef Format = 599 Args.getLastArgValue(OPT_fdiagnostics_format, "clang"); 600 if (Format == "clang") 601 Opts.setFormat(DiagnosticOptions::Clang); 602 else if (Format == "msvc") 603 Opts.setFormat(DiagnosticOptions::Msvc); 604 else if (Format == "msvc-fallback") { 605 Opts.setFormat(DiagnosticOptions::Msvc); 606 Opts.CLFallbackMode = true; 607 } else if (Format == "vi") 608 Opts.setFormat(DiagnosticOptions::Vi); 609 else { 610 Success = false; 611 if (Diags) 612 Diags->Report(diag::err_drv_invalid_value) 613 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args) 614 << Format; 615 } 616 617 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info); 618 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits); 619 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location); 620 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify); 621 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type); 622 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree); 623 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags); 624 Opts.MacroBacktraceLimit = 625 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit, 626 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags); 627 Opts.TemplateBacktraceLimit = getLastArgIntValue( 628 Args, OPT_ftemplate_backtrace_limit, 629 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags); 630 Opts.ConstexprBacktraceLimit = getLastArgIntValue( 631 Args, OPT_fconstexpr_backtrace_limit, 632 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags); 633 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop, 634 DiagnosticOptions::DefaultTabStop, Diags); 635 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) { 636 Opts.TabStop = DiagnosticOptions::DefaultTabStop; 637 if (Diags) 638 Diags->Report(diag::warn_ignoring_ftabstop_value) 639 << Opts.TabStop << DiagnosticOptions::DefaultTabStop; 640 } 641 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags); 642 addWarningArgs(Args, Opts.Warnings); 643 644 return Success; 645} 646 647static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) { 648 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory); 649} 650 651static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, 652 DiagnosticsEngine &Diags) { 653 using namespace options; 654 Opts.ProgramAction = frontend::ParseSyntaxOnly; 655 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) { 656 switch (A->getOption().getID()) { 657 default: 658 llvm_unreachable("Invalid option in group!"); 659 case OPT_ast_list: 660 Opts.ProgramAction = frontend::ASTDeclList; break; 661 case OPT_ast_dump: 662 Opts.ProgramAction = frontend::ASTDump; break; 663 case OPT_ast_print: 664 Opts.ProgramAction = frontend::ASTPrint; break; 665 case OPT_ast_view: 666 Opts.ProgramAction = frontend::ASTView; break; 667 case OPT_dump_raw_tokens: 668 Opts.ProgramAction = frontend::DumpRawTokens; break; 669 case OPT_dump_tokens: 670 Opts.ProgramAction = frontend::DumpTokens; break; 671 case OPT_S: 672 Opts.ProgramAction = frontend::EmitAssembly; break; 673 case OPT_emit_llvm_bc: 674 Opts.ProgramAction = frontend::EmitBC; break; 675 case OPT_emit_html: 676 Opts.ProgramAction = frontend::EmitHTML; break; 677 case OPT_emit_llvm: 678 Opts.ProgramAction = frontend::EmitLLVM; break; 679 case OPT_emit_llvm_only: 680 Opts.ProgramAction = frontend::EmitLLVMOnly; break; 681 case OPT_emit_codegen_only: 682 Opts.ProgramAction = frontend::EmitCodeGenOnly; break; 683 case OPT_emit_obj: 684 Opts.ProgramAction = frontend::EmitObj; break; 685 case OPT_fixit_EQ: 686 Opts.FixItSuffix = A->getValue(); 687 // fall-through! 688 case OPT_fixit: 689 Opts.ProgramAction = frontend::FixIt; break; 690 case OPT_emit_module: 691 Opts.ProgramAction = frontend::GenerateModule; break; 692 case OPT_emit_pch: 693 Opts.ProgramAction = frontend::GeneratePCH; break; 694 case OPT_emit_pth: 695 Opts.ProgramAction = frontend::GeneratePTH; break; 696 case OPT_init_only: 697 Opts.ProgramAction = frontend::InitOnly; break; 698 case OPT_fsyntax_only: 699 Opts.ProgramAction = frontend::ParseSyntaxOnly; break; 700 case OPT_module_file_info: 701 Opts.ProgramAction = frontend::ModuleFileInfo; break; 702 case OPT_print_decl_contexts: 703 Opts.ProgramAction = frontend::PrintDeclContext; break; 704 case OPT_print_preamble: 705 Opts.ProgramAction = frontend::PrintPreamble; break; 706 case OPT_E: 707 Opts.ProgramAction = frontend::PrintPreprocessedInput; break; 708 case OPT_rewrite_macros: 709 Opts.ProgramAction = frontend::RewriteMacros; break; 710 case OPT_rewrite_objc: 711 Opts.ProgramAction = frontend::RewriteObjC; break; 712 case OPT_rewrite_test: 713 Opts.ProgramAction = frontend::RewriteTest; break; 714 case OPT_analyze: 715 Opts.ProgramAction = frontend::RunAnalysis; break; 716 case OPT_migrate: 717 Opts.ProgramAction = frontend::MigrateSource; break; 718 case OPT_Eonly: 719 Opts.ProgramAction = frontend::RunPreprocessorOnly; break; 720 } 721 } 722 723 if (const Arg* A = Args.getLastArg(OPT_plugin)) { 724 Opts.Plugins.push_back(A->getValue(0)); 725 Opts.ProgramAction = frontend::PluginAction; 726 Opts.ActionName = A->getValue(); 727 728 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 729 end = Args.filtered_end(); it != end; ++it) { 730 if ((*it)->getValue(0) == Opts.ActionName) 731 Opts.PluginArgs.push_back((*it)->getValue(1)); 732 } 733 } 734 735 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin); 736 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size()); 737 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) { 738 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg), 739 end = Args.filtered_end(); it != end; ++it) { 740 if ((*it)->getValue(0) == Opts.AddPluginActions[i]) 741 Opts.AddPluginArgs[i].push_back((*it)->getValue(1)); 742 } 743 } 744 745 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) { 746 Opts.CodeCompletionAt = 747 ParsedSourceLocation::FromString(A->getValue()); 748 if (Opts.CodeCompletionAt.FileName.empty()) 749 Diags.Report(diag::err_drv_invalid_value) 750 << A->getAsString(Args) << A->getValue(); 751 } 752 Opts.DisableFree = Args.hasArg(OPT_disable_free); 753 754 Opts.OutputFile = Args.getLastArgValue(OPT_o); 755 Opts.Plugins = Args.getAllArgValues(OPT_load); 756 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch); 757 Opts.ShowHelp = Args.hasArg(OPT_help); 758 Opts.ShowStats = Args.hasArg(OPT_print_stats); 759 Opts.ShowTimers = Args.hasArg(OPT_ftime_report); 760 Opts.ShowVersion = Args.hasArg(OPT_version); 761 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge); 762 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm); 763 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can); 764 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings); 765 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile); 766 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp); 767 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter); 768 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups); 769 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index); 770 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex; 771 772 Opts.CodeCompleteOpts.IncludeMacros 773 = Args.hasArg(OPT_code_completion_macros); 774 Opts.CodeCompleteOpts.IncludeCodePatterns 775 = Args.hasArg(OPT_code_completion_patterns); 776 Opts.CodeCompleteOpts.IncludeGlobals 777 = !Args.hasArg(OPT_no_code_completion_globals); 778 Opts.CodeCompleteOpts.IncludeBriefComments 779 = Args.hasArg(OPT_code_completion_brief_comments); 780 781 Opts.OverrideRecordLayoutsFile 782 = Args.getLastArgValue(OPT_foverride_record_layout_EQ); 783 if (const Arg *A = Args.getLastArg(OPT_arcmt_check, 784 OPT_arcmt_modify, 785 OPT_arcmt_migrate)) { 786 switch (A->getOption().getID()) { 787 default: 788 llvm_unreachable("missed a case"); 789 case OPT_arcmt_check: 790 Opts.ARCMTAction = FrontendOptions::ARCMT_Check; 791 break; 792 case OPT_arcmt_modify: 793 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify; 794 break; 795 case OPT_arcmt_migrate: 796 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate; 797 break; 798 } 799 } 800 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory); 801 Opts.ARCMTMigrateReportOut 802 = Args.getLastArgValue(OPT_arcmt_migrate_report_output); 803 Opts.ARCMTMigrateEmitARCErrors 804 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors); 805 806 if (Args.hasArg(OPT_objcmt_migrate_literals)) 807 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals; 808 if (Args.hasArg(OPT_objcmt_migrate_subscripting)) 809 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting; 810 if (Args.hasArg(OPT_objcmt_migrate_property)) 811 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property; 812 if (Args.hasArg(OPT_objcmt_migrate_readonly_property)) 813 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty; 814 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property)) 815 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty; 816 if (Args.hasArg(OPT_objcmt_migrate_annotation)) 817 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation; 818 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property)) 819 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty; 820 if (Args.hasArg(OPT_objcmt_migrate_instancetype)) 821 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype; 822 if (Args.hasArg(OPT_objcmt_migrate_nsmacros)) 823 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros; 824 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance)) 825 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance; 826 if (Args.hasArg(OPT_objcmt_atomic_property)) 827 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty; 828 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly)) 829 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty; 830 if (Args.hasArg(OPT_objcmt_migrate_all)) 831 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls; 832 833 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_white_list_dir_path); 834 835 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None && 836 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) { 837 Diags.Report(diag::err_drv_argument_not_allowed_with) 838 << "ARC migration" << "ObjC migration"; 839 } 840 841 InputKind DashX = IK_None; 842 if (const Arg *A = Args.getLastArg(OPT_x)) { 843 DashX = llvm::StringSwitch<InputKind>(A->getValue()) 844 .Case("c", IK_C) 845 .Case("cl", IK_OpenCL) 846 .Case("cuda", IK_CUDA) 847 .Case("c++", IK_CXX) 848 .Case("objective-c", IK_ObjC) 849 .Case("objective-c++", IK_ObjCXX) 850 .Case("cpp-output", IK_PreprocessedC) 851 .Case("assembler-with-cpp", IK_Asm) 852 .Case("c++-cpp-output", IK_PreprocessedCXX) 853 .Case("objective-c-cpp-output", IK_PreprocessedObjC) 854 .Case("objc-cpp-output", IK_PreprocessedObjC) 855 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX) 856 .Case("objc++-cpp-output", IK_PreprocessedObjCXX) 857 .Case("c-header", IK_C) 858 .Case("cl-header", IK_OpenCL) 859 .Case("objective-c-header", IK_ObjC) 860 .Case("c++-header", IK_CXX) 861 .Case("objective-c++-header", IK_ObjCXX) 862 .Cases("ast", "pcm", IK_AST) 863 .Case("ir", IK_LLVM_IR) 864 .Default(IK_None); 865 if (DashX == IK_None) 866 Diags.Report(diag::err_drv_invalid_value) 867 << A->getAsString(Args) << A->getValue(); 868 } 869 870 // '-' is the default input if none is given. 871 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT); 872 Opts.Inputs.clear(); 873 if (Inputs.empty()) 874 Inputs.push_back("-"); 875 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 876 InputKind IK = DashX; 877 if (IK == IK_None) { 878 IK = FrontendOptions::getInputKindForExtension( 879 StringRef(Inputs[i]).rsplit('.').second); 880 // FIXME: Remove this hack. 881 if (i == 0) 882 DashX = IK; 883 } 884 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK)); 885 } 886 887 return DashX; 888} 889 890std::string CompilerInvocation::GetResourcesPath(const char *Argv0, 891 void *MainAddr) { 892 SmallString<128> P(llvm::sys::fs::getMainExecutable(Argv0, MainAddr)); 893 894 if (!P.empty()) { 895 llvm::sys::path::remove_filename(P); // Remove /clang from foo/bin/clang 896 llvm::sys::path::remove_filename(P); // Remove /bin from foo/bin 897 898 // Get foo/lib/clang/<version>/include 899 llvm::sys::path::append(P, "lib", "clang", CLANG_VERSION_STRING); 900 } 901 902 return P.str(); 903} 904 905static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) { 906 using namespace options; 907 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/"); 908 Opts.Verbose = Args.hasArg(OPT_v); 909 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc); 910 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc); 911 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx); 912 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ)) 913 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0); 914 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir); 915 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path); 916 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash); 917 // -fmodules implies -fmodule-maps 918 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules); 919 Opts.ModuleCachePruneInterval = 920 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60); 921 Opts.ModuleCachePruneAfter = 922 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60); 923 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro), 924 ie = Args.filtered_end(); 925 it != ie; ++it) { 926 StringRef MacroDef = (*it)->getValue(); 927 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first); 928 } 929 std::vector<std::string> ModuleMapFiles = 930 Args.getAllArgValues(OPT_fmodule_map_file); 931 Opts.ModuleMapFiles.insert(ModuleMapFiles.begin(), ModuleMapFiles.end()); 932 933 // Add -I..., -F..., and -index-header-map options in order. 934 bool IsIndexHeaderMap = false; 935 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F, 936 OPT_index_header_map), 937 ie = Args.filtered_end(); it != ie; ++it) { 938 if ((*it)->getOption().matches(OPT_index_header_map)) { 939 // -index-header-map applies to the next -I or -F. 940 IsIndexHeaderMap = true; 941 continue; 942 } 943 944 frontend::IncludeDirGroup Group 945 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled; 946 947 Opts.AddPath((*it)->getValue(), Group, 948 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true); 949 IsIndexHeaderMap = false; 950 } 951 952 // Add -iprefix/-iwithprefix/-iwithprefixbefore options. 953 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix. 954 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix, 955 OPT_iwithprefixbefore), 956 ie = Args.filtered_end(); it != ie; ++it) { 957 const Arg *A = *it; 958 if (A->getOption().matches(OPT_iprefix)) 959 Prefix = A->getValue(); 960 else if (A->getOption().matches(OPT_iwithprefix)) 961 Opts.AddPath(Prefix.str() + A->getValue(), 962 frontend::After, false, true); 963 else 964 Opts.AddPath(Prefix.str() + A->getValue(), 965 frontend::Angled, false, true); 966 } 967 968 for (arg_iterator it = Args.filtered_begin(OPT_idirafter), 969 ie = Args.filtered_end(); it != ie; ++it) 970 Opts.AddPath((*it)->getValue(), frontend::After, false, true); 971 for (arg_iterator it = Args.filtered_begin(OPT_iquote), 972 ie = Args.filtered_end(); it != ie; ++it) 973 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true); 974 for (arg_iterator it = Args.filtered_begin(OPT_isystem, 975 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it) 976 Opts.AddPath((*it)->getValue(), frontend::System, false, 977 !(*it)->getOption().matches(OPT_iwithsysroot)); 978 for (arg_iterator it = Args.filtered_begin(OPT_iframework), 979 ie = Args.filtered_end(); it != ie; ++it) 980 Opts.AddPath((*it)->getValue(), frontend::System, true, true); 981 982 // Add the paths for the various language specific isystem flags. 983 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem), 984 ie = Args.filtered_end(); it != ie; ++it) 985 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true); 986 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem), 987 ie = Args.filtered_end(); it != ie; ++it) 988 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true); 989 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem), 990 ie = Args.filtered_end(); it != ie; ++it) 991 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true); 992 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem), 993 ie = Args.filtered_end(); it != ie; ++it) 994 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true); 995 996 // Add the internal paths from a driver that detects standard include paths. 997 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem, 998 OPT_internal_externc_isystem), 999 E = Args.filtered_end(); 1000 I != E; ++I) { 1001 frontend::IncludeDirGroup Group = frontend::System; 1002 if ((*I)->getOption().matches(OPT_internal_externc_isystem)) 1003 Group = frontend::ExternCSystem; 1004 Opts.AddPath((*I)->getValue(), Group, false, true); 1005 } 1006 1007 // Add the path prefixes which are implicitly treated as being system headers. 1008 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix, 1009 OPT_ino_system_prefix), 1010 E = Args.filtered_end(); 1011 I != E; ++I) 1012 Opts.AddSystemHeaderPrefix((*I)->getValue(), 1013 (*I)->getOption().matches(OPT_isystem_prefix)); 1014} 1015 1016void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK, 1017 LangStandard::Kind LangStd) { 1018 // Set some properties which depend solely on the input kind; it would be nice 1019 // to move these to the language standard, and have the driver resolve the 1020 // input kind + language standard. 1021 if (IK == IK_Asm) { 1022 Opts.AsmPreprocessor = 1; 1023 } else if (IK == IK_ObjC || 1024 IK == IK_ObjCXX || 1025 IK == IK_PreprocessedObjC || 1026 IK == IK_PreprocessedObjCXX) { 1027 Opts.ObjC1 = Opts.ObjC2 = 1; 1028 } 1029 1030 if (LangStd == LangStandard::lang_unspecified) { 1031 // Based on the base language, pick one. 1032 switch (IK) { 1033 case IK_None: 1034 case IK_AST: 1035 case IK_LLVM_IR: 1036 llvm_unreachable("Invalid input kind!"); 1037 case IK_OpenCL: 1038 LangStd = LangStandard::lang_opencl; 1039 break; 1040 case IK_CUDA: 1041 LangStd = LangStandard::lang_cuda; 1042 break; 1043 case IK_Asm: 1044 case IK_C: 1045 case IK_PreprocessedC: 1046 case IK_ObjC: 1047 case IK_PreprocessedObjC: 1048 LangStd = LangStandard::lang_gnu99; 1049 break; 1050 case IK_CXX: 1051 case IK_PreprocessedCXX: 1052 case IK_ObjCXX: 1053 case IK_PreprocessedObjCXX: 1054 LangStd = LangStandard::lang_gnucxx98; 1055 break; 1056 } 1057 } 1058 1059 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1060 Opts.LineComment = Std.hasLineComments(); 1061 Opts.C99 = Std.isC99(); 1062 Opts.C11 = Std.isC11(); 1063 Opts.CPlusPlus = Std.isCPlusPlus(); 1064 Opts.CPlusPlus11 = Std.isCPlusPlus11(); 1065 Opts.CPlusPlus1y = Std.isCPlusPlus1y(); 1066 Opts.Digraphs = Std.hasDigraphs(); 1067 Opts.GNUMode = Std.isGNUMode(); 1068 Opts.GNUInline = !Std.isC99(); 1069 Opts.HexFloats = Std.hasHexFloats(); 1070 Opts.ImplicitInt = Std.hasImplicitInt(); 1071 1072 // Set OpenCL Version. 1073 if (LangStd == LangStandard::lang_opencl) { 1074 Opts.OpenCL = 1; 1075 Opts.OpenCLVersion = 100; 1076 } 1077 else if (LangStd == LangStandard::lang_opencl11) { 1078 Opts.OpenCL = 1; 1079 Opts.OpenCLVersion = 110; 1080 } 1081 else if (LangStd == LangStandard::lang_opencl12) { 1082 Opts.OpenCL = 1; 1083 Opts.OpenCLVersion = 120; 1084 } 1085 1086 // OpenCL has some additional defaults. 1087 if (Opts.OpenCL) { 1088 Opts.AltiVec = 0; 1089 Opts.CXXOperatorNames = 1; 1090 Opts.LaxVectorConversions = 0; 1091 Opts.DefaultFPContract = 1; 1092 Opts.NativeHalfType = 1; 1093 } 1094 1095 if (LangStd == LangStandard::lang_cuda) 1096 Opts.CUDA = 1; 1097 1098 // OpenCL and C++ both have bool, true, false keywords. 1099 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus; 1100 1101 // C++ has wchar_t keyword. 1102 Opts.WChar = Opts.CPlusPlus; 1103 1104 Opts.GNUKeywords = Opts.GNUMode; 1105 Opts.CXXOperatorNames = Opts.CPlusPlus; 1106 1107 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs 1108 // is specified, or -std is set to a conforming mode. 1109 Opts.Trigraphs = !Opts.GNUMode; 1110 1111 Opts.DollarIdents = !Opts.AsmPreprocessor; 1112 1113 // C++1y onwards has sized global deallocation functions. 1114 Opts.SizedDeallocation = Opts.CPlusPlus1y; 1115} 1116 1117/// Attempt to parse a visibility value out of the given argument. 1118static Visibility parseVisibility(Arg *arg, ArgList &args, 1119 DiagnosticsEngine &diags) { 1120 StringRef value = arg->getValue(); 1121 if (value == "default") { 1122 return DefaultVisibility; 1123 } else if (value == "hidden") { 1124 return HiddenVisibility; 1125 } else if (value == "protected") { 1126 // FIXME: diagnose if target does not support protected visibility 1127 return ProtectedVisibility; 1128 } 1129 1130 diags.Report(diag::err_drv_invalid_value) 1131 << arg->getAsString(args) << value; 1132 return DefaultVisibility; 1133} 1134 1135static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, 1136 DiagnosticsEngine &Diags) { 1137 // FIXME: Cleanup per-file based stuff. 1138 LangStandard::Kind LangStd = LangStandard::lang_unspecified; 1139 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) { 1140 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1141#define LANGSTANDARD(id, name, desc, features) \ 1142 .Case(name, LangStandard::lang_##id) 1143#include "clang/Frontend/LangStandards.def" 1144 .Default(LangStandard::lang_unspecified); 1145 if (LangStd == LangStandard::lang_unspecified) 1146 Diags.Report(diag::err_drv_invalid_value) 1147 << A->getAsString(Args) << A->getValue(); 1148 else { 1149 // Valid standard, check to make sure language and standard are compatable. 1150 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd); 1151 switch (IK) { 1152 case IK_C: 1153 case IK_ObjC: 1154 case IK_PreprocessedC: 1155 case IK_PreprocessedObjC: 1156 if (!(Std.isC89() || Std.isC99())) 1157 Diags.Report(diag::err_drv_argument_not_allowed_with) 1158 << A->getAsString(Args) << "C/ObjC"; 1159 break; 1160 case IK_CXX: 1161 case IK_ObjCXX: 1162 case IK_PreprocessedCXX: 1163 case IK_PreprocessedObjCXX: 1164 if (!Std.isCPlusPlus()) 1165 Diags.Report(diag::err_drv_argument_not_allowed_with) 1166 << A->getAsString(Args) << "C++/ObjC++"; 1167 break; 1168 case IK_OpenCL: 1169 if (!Std.isC99()) 1170 Diags.Report(diag::err_drv_argument_not_allowed_with) 1171 << A->getAsString(Args) << "OpenCL"; 1172 break; 1173 case IK_CUDA: 1174 if (!Std.isCPlusPlus()) 1175 Diags.Report(diag::err_drv_argument_not_allowed_with) 1176 << A->getAsString(Args) << "CUDA"; 1177 break; 1178 default: 1179 break; 1180 } 1181 } 1182 } 1183 1184 // -cl-std only applies for OpenCL language standards. 1185 // Override the -std option in this case. 1186 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) { 1187 LangStandard::Kind OpenCLLangStd 1188 = llvm::StringSwitch<LangStandard::Kind>(A->getValue()) 1189 .Case("CL", LangStandard::lang_opencl) 1190 .Case("CL1.1", LangStandard::lang_opencl11) 1191 .Case("CL1.2", LangStandard::lang_opencl12) 1192 .Default(LangStandard::lang_unspecified); 1193 1194 if (OpenCLLangStd == LangStandard::lang_unspecified) { 1195 Diags.Report(diag::err_drv_invalid_value) 1196 << A->getAsString(Args) << A->getValue(); 1197 } 1198 else 1199 LangStd = OpenCLLangStd; 1200 } 1201 1202 CompilerInvocation::setLangDefaults(Opts, IK, LangStd); 1203 1204 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension 1205 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag, 1206 // while a subset (the non-C++ GNU keywords) is provided by GCC's 1207 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single 1208 // name, as it doesn't seem a useful distinction. 1209 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords, 1210 Opts.GNUKeywords); 1211 1212 if (Args.hasArg(OPT_fno_operator_names)) 1213 Opts.CXXOperatorNames = 0; 1214 1215 if (Opts.ObjC1) { 1216 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) { 1217 StringRef value = arg->getValue(); 1218 if (Opts.ObjCRuntime.tryParse(value)) 1219 Diags.Report(diag::err_drv_unknown_objc_runtime) << value; 1220 } 1221 1222 if (Args.hasArg(OPT_fobjc_gc_only)) 1223 Opts.setGC(LangOptions::GCOnly); 1224 else if (Args.hasArg(OPT_fobjc_gc)) 1225 Opts.setGC(LangOptions::HybridGC); 1226 else if (Args.hasArg(OPT_fobjc_arc)) { 1227 Opts.ObjCAutoRefCount = 1; 1228 if (!Opts.ObjCRuntime.allowsARC()) 1229 Diags.Report(diag::err_arc_unsupported_on_runtime); 1230 1231 // Only set ObjCARCWeak if ARC is enabled. 1232 if (Args.hasArg(OPT_fobjc_runtime_has_weak)) 1233 Opts.ObjCARCWeak = 1; 1234 else 1235 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak(); 1236 } 1237 1238 if (Args.hasArg(OPT_fno_objc_infer_related_result_type)) 1239 Opts.ObjCInferRelatedResultType = 0; 1240 1241 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime)) 1242 Opts.ObjCSubscriptingLegacyRuntime = 1243 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX); 1244 } 1245 1246 if (Args.hasArg(OPT_fgnu89_inline)) 1247 Opts.GNUInline = 1; 1248 1249 if (Args.hasArg(OPT_fapple_kext)) { 1250 if (!Opts.CPlusPlus) 1251 Diags.Report(diag::warn_c_kext); 1252 else 1253 Opts.AppleKext = 1; 1254 } 1255 1256 if (Args.hasArg(OPT_print_ivar_layout)) 1257 Opts.ObjCGCBitmapPrint = 1; 1258 if (Args.hasArg(OPT_fno_constant_cfstrings)) 1259 Opts.NoConstantCFStrings = 1; 1260 1261 if (Args.hasArg(OPT_faltivec)) 1262 Opts.AltiVec = 1; 1263 1264 if (Args.hasArg(OPT_pthread)) 1265 Opts.POSIXThreads = 1; 1266 1267 // The value-visibility mode defaults to "default". 1268 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) { 1269 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags)); 1270 } else { 1271 Opts.setValueVisibilityMode(DefaultVisibility); 1272 } 1273 1274 // The type-visibility mode defaults to the value-visibility mode. 1275 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) { 1276 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags)); 1277 } else { 1278 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode()); 1279 } 1280 1281 if (Args.hasArg(OPT_fvisibility_inlines_hidden)) 1282 Opts.InlineVisibilityHidden = 1; 1283 1284 if (Args.hasArg(OPT_ftrapv)) { 1285 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping); 1286 // Set the handler, if one is specified. 1287 Opts.OverflowHandler = 1288 Args.getLastArgValue(OPT_ftrapv_handler); 1289 } 1290 else if (Args.hasArg(OPT_fwrapv)) 1291 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined); 1292 1293 if (Args.hasArg(OPT_trigraphs)) 1294 Opts.Trigraphs = 1; 1295 1296 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers, 1297 OPT_fno_dollars_in_identifiers, 1298 Opts.DollarIdents); 1299 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings); 1300 Opts.MicrosoftExt 1301 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility); 1302 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility); 1303 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt; 1304 Opts.MSCVersion = getLastArgIntValue(Args, OPT_fmsc_version, 0, Diags); 1305 Opts.Borland = Args.hasArg(OPT_fborland_extensions); 1306 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings); 1307 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings, 1308 Opts.ConstStrings); 1309 if (Args.hasArg(OPT_fno_lax_vector_conversions)) 1310 Opts.LaxVectorConversions = 0; 1311 if (Args.hasArg(OPT_fno_threadsafe_statics)) 1312 Opts.ThreadsafeStatics = 0; 1313 Opts.Exceptions = Args.hasArg(OPT_fexceptions); 1314 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions); 1315 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions); 1316 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions); 1317 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp); 1318 1319 Opts.RTTI = !Args.hasArg(OPT_fno_rtti); 1320 Opts.Blocks = Args.hasArg(OPT_fblocks); 1321 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional); 1322 Opts.Modules = Args.hasArg(OPT_fmodules); 1323 Opts.ModulesDeclUse = Args.hasArg(OPT_fmodules_decluse); 1324 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char); 1325 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar); 1326 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar); 1327 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums); 1328 Opts.Freestanding = Args.hasArg(OPT_ffreestanding); 1329 Opts.FormatExtensions = Args.hasArg(OPT_fformat_extensions); 1330 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding; 1331 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin); 1332 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new); 1333 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation); 1334 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions); 1335 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control); 1336 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors); 1337 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno); 1338 Opts.InstantiationDepth = 1339 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags); 1340 Opts.ArrowDepth = 1341 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags); 1342 Opts.ConstexprCallDepth = 1343 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags); 1344 Opts.ConstexprStepLimit = 1345 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags); 1346 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags); 1347 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing); 1348 Opts.NumLargeByValueCopy = 1349 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags); 1350 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields); 1351 Opts.ObjCConstantStringClass = 1352 Args.getLastArgValue(OPT_fconstant_string_class); 1353 Opts.ObjCDefaultSynthProperties = 1354 !Args.hasArg(OPT_disable_objc_default_synthesize_properties); 1355 Opts.EncodeExtendedBlockSig = 1356 Args.hasArg(OPT_fencode_extended_block_signature); 1357 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls); 1358 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags); 1359 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags); 1360 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags); 1361 Opts.Static = Args.hasArg(OPT_static_define); 1362 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple); 1363 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple 1364 || Args.hasArg(OPT_fdump_record_layouts); 1365 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts); 1366 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking); 1367 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align); 1368 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant); 1369 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math); 1370 Opts.MRTD = Args.hasArg(OPT_mrtd); 1371 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat); 1372 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map); 1373 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype); 1374 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support); 1375 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id); 1376 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal); 1377 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack); 1378 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name); 1379 1380 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) { 1381 switch (llvm::StringSwitch<unsigned>(A->getValue()) 1382 .Case("target", LangOptions::ASMM_Target) 1383 .Case("no", LangOptions::ASMM_Off) 1384 .Case("yes", LangOptions::ASMM_On) 1385 .Default(255)) { 1386 default: 1387 Diags.Report(diag::err_drv_invalid_value) 1388 << "-faddress-space-map-mangling=" << A->getValue(); 1389 break; 1390 case LangOptions::ASMM_Target: 1391 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target); 1392 break; 1393 case LangOptions::ASMM_On: 1394 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On); 1395 break; 1396 case LangOptions::ASMM_Off: 1397 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off); 1398 break; 1399 } 1400 } 1401 1402 // Check if -fopenmp is specified. 1403 Opts.OpenMP = Args.hasArg(OPT_fopenmp); 1404 1405 // Record whether the __DEPRECATED define was requested. 1406 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro, 1407 OPT_fno_deprecated_macro, 1408 Opts.Deprecated); 1409 1410 // FIXME: Eliminate this dependency. 1411 unsigned Opt = getOptimizationLevel(Args, IK, Diags), 1412 OptSize = getOptimizationLevelSize(Args); 1413 Opts.Optimize = Opt != 0; 1414 Opts.OptimizeSize = OptSize != 0; 1415 1416 // This is the __NO_INLINE__ define, which just depends on things like the 1417 // optimization level and -fno-inline, not actually whether the backend has 1418 // inlining enabled. 1419 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline); 1420 1421 Opts.FastMath = Args.hasArg(OPT_ffast_math); 1422 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only); 1423 1424 Opts.RetainCommentsFromSystemHeaders = 1425 Args.hasArg(OPT_fretain_comments_from_system_headers); 1426 1427 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags); 1428 switch (SSP) { 1429 default: 1430 Diags.Report(diag::err_drv_invalid_value) 1431 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP; 1432 break; 1433 case 0: Opts.setStackProtector(LangOptions::SSPOff); break; 1434 case 1: Opts.setStackProtector(LangOptions::SSPOn); break; 1435 case 2: Opts.setStackProtector(LangOptions::SSPReq); break; 1436 } 1437 1438 // Parse -fsanitize= arguments. 1439 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ); 1440 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) { 1441 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to 1442 // efficiently map string values to them. Perform the mapping indirectly: 1443 // convert strings to enumerated values, then switch over the enum to set 1444 // the right bitfield value. 1445 enum Sanitizer { 1446#define SANITIZER(NAME, ID) \ 1447 ID, 1448#include "clang/Basic/Sanitizers.def" 1449 Unknown 1450 }; 1451 switch (llvm::StringSwitch<unsigned>(Sanitizers[I]) 1452#define SANITIZER(NAME, ID) \ 1453 .Case(NAME, ID) 1454#include "clang/Basic/Sanitizers.def" 1455 .Default(Unknown)) { 1456#define SANITIZER(NAME, ID) \ 1457 case ID: \ 1458 Opts.Sanitize.ID = true; \ 1459 break; 1460#include "clang/Basic/Sanitizers.def" 1461 1462 case Unknown: 1463 Diags.Report(diag::err_drv_invalid_value) 1464 << "-fsanitize=" << Sanitizers[I]; 1465 break; 1466 } 1467 } 1468} 1469 1470static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args, 1471 FileManager &FileMgr, 1472 DiagnosticsEngine &Diags) { 1473 using namespace options; 1474 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch); 1475 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth); 1476 if (const Arg *A = Args.getLastArg(OPT_token_cache)) 1477 Opts.TokenCache = A->getValue(); 1478 else 1479 Opts.TokenCache = Opts.ImplicitPTHInclude; 1480 Opts.UsePredefines = !Args.hasArg(OPT_undef); 1481 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record); 1482 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch); 1483 1484 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls); 1485 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl), 1486 ie = Args.filtered_end(); it != ie; ++it) { 1487 const Arg *A = *it; 1488 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue()); 1489 } 1490 1491 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) { 1492 StringRef Value(A->getValue()); 1493 size_t Comma = Value.find(','); 1494 unsigned Bytes = 0; 1495 unsigned EndOfLine = 0; 1496 1497 if (Comma == StringRef::npos || 1498 Value.substr(0, Comma).getAsInteger(10, Bytes) || 1499 Value.substr(Comma + 1).getAsInteger(10, EndOfLine)) 1500 Diags.Report(diag::err_drv_preamble_format); 1501 else { 1502 Opts.PrecompiledPreambleBytes.first = Bytes; 1503 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0); 1504 } 1505 } 1506 1507 // Add macros from the command line. 1508 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U), 1509 ie = Args.filtered_end(); it != ie; ++it) { 1510 if ((*it)->getOption().matches(OPT_D)) 1511 Opts.addMacroDef((*it)->getValue()); 1512 else 1513 Opts.addMacroUndef((*it)->getValue()); 1514 } 1515 1516 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros); 1517 1518 // Add the ordered list of -includes. 1519 for (arg_iterator it = Args.filtered_begin(OPT_include), 1520 ie = Args.filtered_end(); it != ie; ++it) { 1521 const Arg *A = *it; 1522 Opts.Includes.push_back(A->getValue()); 1523 } 1524 1525 for (arg_iterator it = Args.filtered_begin(OPT_chain_include), 1526 ie = Args.filtered_end(); it != ie; ++it) { 1527 const Arg *A = *it; 1528 Opts.ChainedIncludes.push_back(A->getValue()); 1529 } 1530 1531 // Include 'altivec.h' if -faltivec option present 1532 if (Args.hasArg(OPT_faltivec)) 1533 Opts.Includes.push_back("altivec.h"); 1534 1535 for (arg_iterator it = Args.filtered_begin(OPT_remap_file), 1536 ie = Args.filtered_end(); it != ie; ++it) { 1537 const Arg *A = *it; 1538 std::pair<StringRef,StringRef> Split = 1539 StringRef(A->getValue()).split(';'); 1540 1541 if (Split.second.empty()) { 1542 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args); 1543 continue; 1544 } 1545 1546 Opts.addRemappedFile(Split.first, Split.second); 1547 } 1548 1549 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) { 1550 StringRef Name = A->getValue(); 1551 unsigned Library = llvm::StringSwitch<unsigned>(Name) 1552 .Case("libc++", ARCXX_libcxx) 1553 .Case("libstdc++", ARCXX_libstdcxx) 1554 .Case("none", ARCXX_nolib) 1555 .Default(~0U); 1556 if (Library == ~0U) 1557 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name; 1558 else 1559 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library; 1560 } 1561} 1562 1563static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts, 1564 ArgList &Args, 1565 frontend::ActionKind Action) { 1566 using namespace options; 1567 1568 switch (Action) { 1569 case frontend::ASTDeclList: 1570 case frontend::ASTDump: 1571 case frontend::ASTPrint: 1572 case frontend::ASTView: 1573 case frontend::EmitAssembly: 1574 case frontend::EmitBC: 1575 case frontend::EmitHTML: 1576 case frontend::EmitLLVM: 1577 case frontend::EmitLLVMOnly: 1578 case frontend::EmitCodeGenOnly: 1579 case frontend::EmitObj: 1580 case frontend::FixIt: 1581 case frontend::GenerateModule: 1582 case frontend::GeneratePCH: 1583 case frontend::GeneratePTH: 1584 case frontend::ParseSyntaxOnly: 1585 case frontend::ModuleFileInfo: 1586 case frontend::PluginAction: 1587 case frontend::PrintDeclContext: 1588 case frontend::RewriteObjC: 1589 case frontend::RewriteTest: 1590 case frontend::RunAnalysis: 1591 case frontend::MigrateSource: 1592 Opts.ShowCPP = 0; 1593 break; 1594 1595 case frontend::DumpRawTokens: 1596 case frontend::DumpTokens: 1597 case frontend::InitOnly: 1598 case frontend::PrintPreamble: 1599 case frontend::PrintPreprocessedInput: 1600 case frontend::RewriteMacros: 1601 case frontend::RunPreprocessorOnly: 1602 Opts.ShowCPP = !Args.hasArg(OPT_dM); 1603 break; 1604 } 1605 1606 Opts.ShowComments = Args.hasArg(OPT_C); 1607 Opts.ShowLineMarkers = !Args.hasArg(OPT_P); 1608 Opts.ShowMacroComments = Args.hasArg(OPT_CC); 1609 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD); 1610 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes); 1611} 1612 1613static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) { 1614 using namespace options; 1615 Opts.ABI = Args.getLastArgValue(OPT_target_abi); 1616 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi); 1617 Opts.CPU = Args.getLastArgValue(OPT_target_cpu); 1618 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath); 1619 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature); 1620 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version); 1621 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple)); 1622 1623 // Use the default target triple if unspecified. 1624 if (Opts.Triple.empty()) 1625 Opts.Triple = llvm::sys::getDefaultTargetTriple(); 1626} 1627 1628// 1629 1630bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, 1631 const char *const *ArgBegin, 1632 const char *const *ArgEnd, 1633 DiagnosticsEngine &Diags) { 1634 bool Success = true; 1635 1636 // Parse the arguments. 1637 OwningPtr<OptTable> Opts(createDriverOptTable()); 1638 const unsigned IncludedFlagsBitmask = options::CC1Option; 1639 unsigned MissingArgIndex, MissingArgCount; 1640 OwningPtr<InputArgList> Args( 1641 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount, 1642 IncludedFlagsBitmask)); 1643 1644 // Check for missing argument error. 1645 if (MissingArgCount) { 1646 Diags.Report(diag::err_drv_missing_argument) 1647 << Args->getArgString(MissingArgIndex) << MissingArgCount; 1648 Success = false; 1649 } 1650 1651 // Issue errors on unknown arguments. 1652 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), 1653 ie = Args->filtered_end(); it != ie; ++it) { 1654 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args); 1655 Success = false; 1656 } 1657 1658 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success; 1659 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success; 1660 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); 1661 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags) 1662 && Success; 1663 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args); 1664 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args); 1665 // FIXME: We shouldn't have to pass the DashX option around here 1666 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); 1667 ParseTargetArgs(Res.getTargetOpts(), *Args); 1668 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags, 1669 Res.getTargetOpts()) && Success; 1670 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); 1671 if (DashX != IK_AST && DashX != IK_LLVM_IR) { 1672 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags); 1673 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC) 1674 Res.getLangOpts()->ObjCExceptions = 1; 1675 } 1676 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of 1677 // PCH file and find the original header name. Remove the need to do that in 1678 // ParsePreprocessorArgs and remove the FileManager 1679 // parameters from the function and the "FileManager.h" #include. 1680 FileManager FileMgr(Res.getFileSystemOpts()); 1681 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags); 1682 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args, 1683 Res.getFrontendOpts().ProgramAction); 1684 return Success; 1685} 1686 1687namespace { 1688 1689 class ModuleSignature { 1690 SmallVector<uint64_t, 16> Data; 1691 unsigned CurBit; 1692 uint64_t CurValue; 1693 1694 public: 1695 ModuleSignature() : CurBit(0), CurValue(0) { } 1696 1697 void add(uint64_t Value, unsigned Bits); 1698 void add(StringRef Value); 1699 void flush(); 1700 1701 llvm::APInt getAsInteger() const; 1702 }; 1703} 1704 1705void ModuleSignature::add(uint64_t Value, unsigned int NumBits) { 1706 CurValue |= Value << CurBit; 1707 if (CurBit + NumBits < 64) { 1708 CurBit += NumBits; 1709 return; 1710 } 1711 1712 // Add the current word. 1713 Data.push_back(CurValue); 1714 1715 if (CurBit) 1716 CurValue = Value >> (64-CurBit); 1717 else 1718 CurValue = 0; 1719 CurBit = (CurBit+NumBits) & 63; 1720} 1721 1722void ModuleSignature::flush() { 1723 if (CurBit == 0) 1724 return; 1725 1726 Data.push_back(CurValue); 1727 CurBit = 0; 1728 CurValue = 0; 1729} 1730 1731void ModuleSignature::add(StringRef Value) { 1732 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I) 1733 add(*I, 8); 1734} 1735 1736llvm::APInt ModuleSignature::getAsInteger() const { 1737 return llvm::APInt(Data.size() * 64, Data); 1738} 1739 1740std::string CompilerInvocation::getModuleHash() const { 1741 // Note: For QoI reasons, the things we use as a hash here should all be 1742 // dumped via the -module-info flag. 1743 using llvm::hash_code; 1744 using llvm::hash_value; 1745 using llvm::hash_combine; 1746 1747 // Start the signature with the compiler version. 1748 // FIXME: We'd rather use something more cryptographically sound than 1749 // CityHash, but this will do for now. 1750 hash_code code = hash_value(getClangFullRepositoryVersion()); 1751 1752 // Extend the signature with the language options 1753#define LANGOPT(Name, Bits, Default, Description) \ 1754 code = hash_combine(code, LangOpts->Name); 1755#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \ 1756 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name())); 1757#define BENIGN_LANGOPT(Name, Bits, Default, Description) 1758#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) 1759#include "clang/Basic/LangOptions.def" 1760 1761 // Extend the signature with the target options. 1762 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU, 1763 TargetOpts->ABI, TargetOpts->CXXABI, 1764 TargetOpts->LinkerVersion); 1765 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i) 1766 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]); 1767 1768 // Extend the signature with preprocessor options. 1769 const PreprocessorOptions &ppOpts = getPreprocessorOpts(); 1770 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts(); 1771 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord); 1772 1773 std::vector<StringRef> MacroDefs; 1774 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator 1775 I = getPreprocessorOpts().Macros.begin(), 1776 IEnd = getPreprocessorOpts().Macros.end(); 1777 I != IEnd; ++I) { 1778 // If we're supposed to ignore this macro for the purposes of modules, 1779 // don't put it into the hash. 1780 if (!hsOpts.ModulesIgnoreMacros.empty()) { 1781 // Check whether we're ignoring this macro. 1782 StringRef MacroDef = I->first; 1783 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first)) 1784 continue; 1785 } 1786 1787 code = hash_combine(code, I->first, I->second); 1788 } 1789 1790 // Extend the signature with the sysroot. 1791 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes, 1792 hsOpts.UseStandardSystemIncludes, 1793 hsOpts.UseStandardCXXIncludes, 1794 hsOpts.UseLibcxx); 1795 1796 // Darwin-specific hack: if we have a sysroot, use the contents and 1797 // modification time of 1798 // $sysroot/System/Library/CoreServices/SystemVersion.plist 1799 // as part of the module hash. 1800 if (!hsOpts.Sysroot.empty()) { 1801 llvm::OwningPtr<llvm::MemoryBuffer> buffer; 1802 SmallString<128> systemVersionFile; 1803 systemVersionFile += hsOpts.Sysroot; 1804 llvm::sys::path::append(systemVersionFile, "System"); 1805 llvm::sys::path::append(systemVersionFile, "Library"); 1806 llvm::sys::path::append(systemVersionFile, "CoreServices"); 1807 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist"); 1808 if (!llvm::MemoryBuffer::getFile(systemVersionFile.str(), buffer)) { 1809 code = hash_combine(code, buffer.get()->getBuffer()); 1810 1811 struct stat statBuf; 1812 if (stat(systemVersionFile.c_str(), &statBuf) == 0) 1813 code = hash_combine(code, statBuf.st_mtime); 1814 } 1815 } 1816 1817 return llvm::APInt(64, code).toString(36, /*Signed=*/false); 1818} 1819 1820namespace clang { 1821 1822// Declared in clang/Frontend/Utils.h. 1823int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default, 1824 DiagnosticsEngine *Diags) { 1825 int Res = Default; 1826 if (Arg *A = Args.getLastArg(Id)) { 1827 if (StringRef(A->getValue()).getAsInteger(10, Res)) { 1828 if (Diags) 1829 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args) 1830 << A->getValue(); 1831 } 1832 } 1833 return Res; 1834} 1835} 1836