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/Arg.h"
15 #include "clang/Driver/ArgList.h"
16 #include "clang/Driver/DriverDiagnostic.h"
17 #include "clang/Driver/OptTable.h"
18 #include "clang/Driver/Option.h"
19 #include "clang/Driver/Options.h"
20 #include "clang/Frontend/LangStandard.h"
21 #include "clang/Lex/HeaderSearchOptions.h"
22 #include "clang/Serialization/ASTReader.h"
23 #include "llvm/ADT/Hashing.h"
24 #include "llvm/ADT/OwningPtr.h"
25 #include "llvm/ADT/SmallVector.h"
26 #include "llvm/ADT/StringExtras.h"
27 #include "llvm/ADT/StringSwitch.h"
28 #include "llvm/ADT/Triple.h"
29 #include "llvm/Support/ErrorHandling.h"
30 #include "llvm/Support/Host.h"
31 #include "llvm/Support/Path.h"
32 using namespace clang;
33
34 //===----------------------------------------------------------------------===//
35 // Initialization.
36 //===----------------------------------------------------------------------===//
37
CompilerInvocationBase()38 CompilerInvocationBase::CompilerInvocationBase()
39 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
40 DiagnosticOpts(new DiagnosticOptions()),
41 HeaderSearchOpts(new HeaderSearchOptions()),
42 PreprocessorOpts(new PreprocessorOptions()) {}
43
CompilerInvocationBase(const CompilerInvocationBase & X)44 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
45 : RefCountedBase<CompilerInvocation>(),
46 LangOpts(new LangOptions(*X.getLangOpts())),
47 TargetOpts(new TargetOptions(X.getTargetOpts())),
48 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
49 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
50 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
51
52 //===----------------------------------------------------------------------===//
53 // Deserialization (from args)
54 //===----------------------------------------------------------------------===//
55
56 using namespace clang::driver;
57 using namespace clang::driver::options;
58
59 //
60
getOptimizationLevel(ArgList & Args,InputKind IK,DiagnosticsEngine & Diags)61 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
62 DiagnosticsEngine &Diags) {
63 unsigned DefaultOpt = 0;
64 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
65 DefaultOpt = 2;
66
67 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
68 if (A->getOption().matches(options::OPT_O0))
69 return 0;
70
71 assert (A->getOption().matches(options::OPT_O));
72
73 StringRef S(A->getValue());
74 if (S == "s" || S == "z" || S.empty())
75 return 2;
76
77 return Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
78 }
79
80 return DefaultOpt;
81 }
82
getOptimizationLevelSize(ArgList & Args,InputKind IK,DiagnosticsEngine & Diags)83 static unsigned getOptimizationLevelSize(ArgList &Args, InputKind IK,
84 DiagnosticsEngine &Diags) {
85 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
86 if (A->getOption().matches(options::OPT_O)) {
87 switch (A->getValue()[0]) {
88 default:
89 return 0;
90 case 's':
91 return 1;
92 case 'z':
93 return 2;
94 }
95 }
96 }
97 return 0;
98 }
99
addWarningArgs(ArgList & Args,std::vector<std::string> & Warnings)100 static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) {
101 for (arg_iterator I = Args.filtered_begin(OPT_W_Group),
102 E = Args.filtered_end(); I != E; ++I) {
103 Arg *A = *I;
104 // If the argument is a pure flag, add its name (minus the "W" at the beginning)
105 // to the warning list. Else, add its value (for the OPT_W case).
106 if (A->getOption().getKind() == Option::FlagClass) {
107 Warnings.push_back(A->getOption().getName().substr(1));
108 } else {
109 for (unsigned Idx = 0, End = A->getNumValues();
110 Idx < End; ++Idx) {
111 StringRef V = A->getValue(Idx);
112 // "-Wl," and such are not warning options.
113 // FIXME: Should be handled by putting these in separate flags.
114 if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,"))
115 continue;
116
117 Warnings.push_back(V);
118 }
119 }
120 }
121 }
122
ParseAnalyzerArgs(AnalyzerOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags)123 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
124 DiagnosticsEngine &Diags) {
125 using namespace options;
126 bool Success = true;
127 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
128 StringRef Name = A->getValue();
129 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
130 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
131 .Case(CMDFLAG, NAME##Model)
132 #include "clang/StaticAnalyzer/Core/Analyses.def"
133 .Default(NumStores);
134 if (Value == NumStores) {
135 Diags.Report(diag::err_drv_invalid_value)
136 << A->getAsString(Args) << Name;
137 Success = false;
138 } else {
139 Opts.AnalysisStoreOpt = Value;
140 }
141 }
142
143 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
144 StringRef Name = A->getValue();
145 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
146 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
147 .Case(CMDFLAG, NAME##Model)
148 #include "clang/StaticAnalyzer/Core/Analyses.def"
149 .Default(NumConstraints);
150 if (Value == NumConstraints) {
151 Diags.Report(diag::err_drv_invalid_value)
152 << A->getAsString(Args) << Name;
153 Success = false;
154 } else {
155 Opts.AnalysisConstraintsOpt = Value;
156 }
157 }
158
159 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
160 StringRef Name = A->getValue();
161 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
162 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
163 .Case(CMDFLAG, PD_##NAME)
164 #include "clang/StaticAnalyzer/Core/Analyses.def"
165 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
166 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
167 Diags.Report(diag::err_drv_invalid_value)
168 << A->getAsString(Args) << Name;
169 Success = false;
170 } else {
171 Opts.AnalysisDiagOpt = Value;
172 }
173 }
174
175 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
176 StringRef Name = A->getValue();
177 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
178 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
179 .Case(CMDFLAG, NAME)
180 #include "clang/StaticAnalyzer/Core/Analyses.def"
181 .Default(NumPurgeModes);
182 if (Value == NumPurgeModes) {
183 Diags.Report(diag::err_drv_invalid_value)
184 << A->getAsString(Args) << Name;
185 Success = false;
186 } else {
187 Opts.AnalysisPurgeOpt = Value;
188 }
189 }
190
191 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
192 StringRef Name = A->getValue();
193 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
194 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
195 .Case(CMDFLAG, NAME)
196 #include "clang/StaticAnalyzer/Core/Analyses.def"
197 .Default(NumInliningModes);
198 if (Value == NumInliningModes) {
199 Diags.Report(diag::err_drv_invalid_value)
200 << A->getAsString(Args) << Name;
201 Success = false;
202 } else {
203 Opts.InliningMode = Value;
204 }
205 }
206
207 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
208 Opts.visualizeExplodedGraphWithGraphViz =
209 Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
210 Opts.visualizeExplodedGraphWithUbiGraph =
211 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
212 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
213 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
214 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
215 Opts.AnalyzeNestedBlocks =
216 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
217 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume);
218 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
219 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
220 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
221 Opts.maxBlockVisitOnPath = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
222 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
223 Opts.InlineMaxStackDepth =
224 Args.getLastArgIntValue(OPT_analyzer_inline_max_stack_depth,
225 Opts.InlineMaxStackDepth, Diags);
226
227 Opts.CheckersControlList.clear();
228 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
229 OPT_analyzer_disable_checker),
230 ie = Args.filtered_end(); it != ie; ++it) {
231 const Arg *A = *it;
232 A->claim();
233 bool enable = (A->getOption().getID() == OPT_analyzer_checker);
234 // We can have a list of comma separated checker names, e.g:
235 // '-analyzer-checker=cocoa,unix'
236 StringRef checkerList = A->getValue();
237 SmallVector<StringRef, 4> checkers;
238 checkerList.split(checkers, ",");
239 for (unsigned i = 0, e = checkers.size(); i != e; ++i)
240 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
241 }
242
243 // Go through the analyzer configuration options.
244 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config),
245 ie = Args.filtered_end(); it != ie; ++it) {
246 const Arg *A = *it;
247 A->claim();
248 // We can have a list of comma separated config names, e.g:
249 // '-analyzer-config key1=val1,key2=val2'
250 StringRef configList = A->getValue();
251 SmallVector<StringRef, 4> configVals;
252 configList.split(configVals, ",");
253 for (unsigned i = 0, e = configVals.size(); i != e; ++i) {
254 StringRef key, val;
255 llvm::tie(key, val) = configVals[i].split("=");
256 if (val.empty()) {
257 Diags.Report(SourceLocation(),
258 diag::err_analyzer_config_no_value) << configVals[i];
259 Success = false;
260 break;
261 }
262 if (val.find('=') != StringRef::npos) {
263 Diags.Report(SourceLocation(),
264 diag::err_analyzer_config_multiple_values)
265 << configVals[i];
266 Success = false;
267 break;
268 }
269 Opts.Config[key] = val;
270 }
271 }
272
273 return Success;
274 }
275
ParseMigratorArgs(MigratorOptions & Opts,ArgList & Args)276 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
277 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
278 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
279 return true;
280 }
281
ParseCommentArgs(CommentOptions & Opts,ArgList & Args)282 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
283 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
284 }
285
ParseCodeGenArgs(CodeGenOptions & Opts,ArgList & Args,InputKind IK,DiagnosticsEngine & Diags)286 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
287 DiagnosticsEngine &Diags) {
288 using namespace options;
289 bool Success = true;
290
291 unsigned OptLevel = getOptimizationLevel(Args, IK, Diags);
292 if (OptLevel > 3) {
293 Diags.Report(diag::err_drv_invalid_value)
294 << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel;
295 OptLevel = 3;
296 Success = false;
297 }
298 Opts.OptimizationLevel = OptLevel;
299
300 // We must always run at least the always inlining pass.
301 Opts.setInlining(
302 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
303 : CodeGenOptions::OnlyAlwaysInlining);
304 // -fno-inline-functions overrides OptimizationLevel > 1.
305 Opts.NoInline = Args.hasArg(OPT_fno_inline);
306 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ?
307 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining());
308
309 if (Args.hasArg(OPT_gline_tables_only)) {
310 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly);
311 } else if (Args.hasArg(OPT_g_Flag)) {
312 if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true))
313 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo);
314 else
315 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo);
316 }
317 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
318 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
319
320 Opts.ModulesAutolink = Args.hasArg(OPT_fmodules_autolink);
321 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
322 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
323 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
324 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
325 OPT_fuse_register_sized_bitfield_access);
326 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
327 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
328 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
329 Opts.NoCommon = Args.hasArg(OPT_fno_common);
330 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
331 Opts.OptimizeSize = getOptimizationLevelSize(Args, IK, Diags);
332 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
333 Args.hasArg(OPT_ffreestanding));
334 Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
335 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
336
337 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
338 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
339 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
340 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
341 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
342 Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
343 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
344 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
345 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
346 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
347 Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
348 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
349 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
350 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
351 Args.hasArg(OPT_cl_finite_math_only)||
352 Args.hasArg(OPT_cl_fast_relaxed_math));
353 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
354 Args.hasArg(OPT_cl_finite_math_only)||
355 Args.hasArg(OPT_cl_fast_relaxed_math));
356 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
357 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
358 Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
359 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
360 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
361 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
362 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
363 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
364 Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm);
365 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
366 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
367 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
368 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
369 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
370 Args.hasArg(OPT_cl_fast_relaxed_math);
371 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
372 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
373 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
374 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
375
376 Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
377 Opts.DataSections = Args.hasArg(OPT_fdata_sections);
378
379 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
380 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
381 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover);
382
383 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
384 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
385 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
386 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
387 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
388 Opts.CoverageFunctionNamesInData =
389 Args.hasArg(OPT_coverage_function_names_in_data);
390 if (Args.hasArg(OPT_coverage_version_EQ)) {
391 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
392 if (CoverageVersion.size() != 4) {
393 Diags.Report(diag::err_drv_invalid_value)
394 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
395 << CoverageVersion;
396 } else {
397 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
398 }
399 }
400 }
401
402 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
403 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
404 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
405 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
406 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
407 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist);
408 Opts.SanitizeMemoryTrackOrigins =
409 Args.hasArg(OPT_fsanitize_memory_track_origins);
410 Opts.SanitizeAddressZeroBaseShadow =
411 Args.hasArg(OPT_fsanitize_address_zero_base_shadow);
412 Opts.SanitizeUndefinedTrapOnError =
413 Args.hasArg(OPT_fsanitize_undefined_trap_on_error);
414 Opts.SSPBufferSize =
415 Args.getLastArgIntValue(OPT_stack_protector_buffer_size, 8, Diags);
416 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
417 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
418 StringRef Val = A->getValue();
419 unsigned StackAlignment = Opts.StackAlignment;
420 Val.getAsInteger(10, StackAlignment);
421 Opts.StackAlignment = StackAlignment;
422 }
423
424 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
425 StringRef Name = A->getValue();
426 unsigned Method = llvm::StringSwitch<unsigned>(Name)
427 .Case("legacy", CodeGenOptions::Legacy)
428 .Case("non-legacy", CodeGenOptions::NonLegacy)
429 .Case("mixed", CodeGenOptions::Mixed)
430 .Default(~0U);
431 if (Method == ~0U) {
432 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
433 Success = false;
434 } else {
435 Opts.setObjCDispatchMethod(
436 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
437 }
438 }
439
440 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
441 StringRef Name = A->getValue();
442 unsigned Model = llvm::StringSwitch<unsigned>(Name)
443 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
444 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
445 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
446 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
447 .Default(~0U);
448 if (Model == ~0U) {
449 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
450 Success = false;
451 } else {
452 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
453 }
454 }
455
456 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
457 StringRef Val = A->getValue();
458 if (Val == "fast")
459 Opts.setFPContractMode(CodeGenOptions::FPC_Fast);
460 else if (Val == "on")
461 Opts.setFPContractMode(CodeGenOptions::FPC_On);
462 else if (Val == "off")
463 Opts.setFPContractMode(CodeGenOptions::FPC_Off);
464 else
465 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
466 }
467
468 return Success;
469 }
470
ParseDependencyOutputArgs(DependencyOutputOptions & Opts,ArgList & Args)471 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
472 ArgList &Args) {
473 using namespace options;
474 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
475 Opts.Targets = Args.getAllArgValues(OPT_MT);
476 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
477 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
478 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
479 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
480 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
481 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
482 }
483
ParseDiagnosticArgs(DiagnosticOptions & Opts,ArgList & Args,DiagnosticsEngine * Diags)484 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
485 DiagnosticsEngine *Diags) {
486 using namespace options;
487 bool Success = true;
488
489 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
490 Opts.DiagnosticSerializationFile =
491 Args.getLastArgValue(OPT_diagnostic_serialized_file);
492 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
493 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
494 Opts.Pedantic = Args.hasArg(OPT_pedantic);
495 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
496 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
497 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
498 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
499 OPT_fno_show_column,
500 /*Default=*/true);
501 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
502 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
503 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
504
505 // Default behavior is to not to show note include stacks.
506 Opts.ShowNoteIncludeStack = false;
507 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
508 OPT_fno_diagnostics_show_note_include_stack))
509 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
510 Opts.ShowNoteIncludeStack = true;
511
512 StringRef ShowOverloads =
513 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
514 if (ShowOverloads == "best")
515 Opts.setShowOverloads(Ovl_Best);
516 else if (ShowOverloads == "all")
517 Opts.setShowOverloads(Ovl_All);
518 else {
519 Success = false;
520 if (Diags)
521 Diags->Report(diag::err_drv_invalid_value)
522 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
523 << ShowOverloads;
524 }
525
526 StringRef ShowCategory =
527 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
528 if (ShowCategory == "none")
529 Opts.ShowCategories = 0;
530 else if (ShowCategory == "id")
531 Opts.ShowCategories = 1;
532 else if (ShowCategory == "name")
533 Opts.ShowCategories = 2;
534 else {
535 Success = false;
536 if (Diags)
537 Diags->Report(diag::err_drv_invalid_value)
538 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
539 << ShowCategory;
540 }
541
542 StringRef Format =
543 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
544 if (Format == "clang")
545 Opts.setFormat(DiagnosticOptions::Clang);
546 else if (Format == "msvc")
547 Opts.setFormat(DiagnosticOptions::Msvc);
548 else if (Format == "vi")
549 Opts.setFormat(DiagnosticOptions::Vi);
550 else {
551 Success = false;
552 if (Diags)
553 Diags->Report(diag::err_drv_invalid_value)
554 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
555 << Format;
556 }
557
558 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
559 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
560 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
561 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
562 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
563 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
564 Opts.WarnOnSpellCheck = Args.hasArg(OPT_fwarn_on_spellcheck);
565 Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
566 Opts.MacroBacktraceLimit
567 = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
568 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
569 Opts.TemplateBacktraceLimit
570 = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
571 DiagnosticOptions::DefaultTemplateBacktraceLimit,
572 Diags);
573 Opts.ConstexprBacktraceLimit
574 = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit,
575 DiagnosticOptions::DefaultConstexprBacktraceLimit,
576 Diags);
577 Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
578 DiagnosticOptions::DefaultTabStop, Diags);
579 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
580 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
581 if (Diags)
582 Diags->Report(diag::warn_ignoring_ftabstop_value)
583 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
584 }
585 Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
586 addWarningArgs(Args, Opts.Warnings);
587
588 return Success;
589 }
590
ParseFileSystemArgs(FileSystemOptions & Opts,ArgList & Args)591 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
592 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
593 }
594
ParseFrontendArgs(FrontendOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags)595 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
596 DiagnosticsEngine &Diags) {
597 using namespace options;
598 Opts.ProgramAction = frontend::ParseSyntaxOnly;
599 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
600 switch (A->getOption().getID()) {
601 default:
602 llvm_unreachable("Invalid option in group!");
603 case OPT_ast_list:
604 Opts.ProgramAction = frontend::ASTDeclList; break;
605 case OPT_ast_dump:
606 Opts.ProgramAction = frontend::ASTDump; break;
607 case OPT_ast_dump_xml:
608 Opts.ProgramAction = frontend::ASTDumpXML; break;
609 case OPT_ast_print:
610 Opts.ProgramAction = frontend::ASTPrint; break;
611 case OPT_ast_view:
612 Opts.ProgramAction = frontend::ASTView; break;
613 case OPT_dump_raw_tokens:
614 Opts.ProgramAction = frontend::DumpRawTokens; break;
615 case OPT_dump_tokens:
616 Opts.ProgramAction = frontend::DumpTokens; break;
617 case OPT_S:
618 Opts.ProgramAction = frontend::EmitAssembly; break;
619 case OPT_emit_llvm_bc:
620 Opts.ProgramAction = frontend::EmitBC; break;
621 case OPT_emit_html:
622 Opts.ProgramAction = frontend::EmitHTML; break;
623 case OPT_emit_llvm:
624 Opts.ProgramAction = frontend::EmitLLVM; break;
625 case OPT_emit_llvm_only:
626 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
627 case OPT_emit_codegen_only:
628 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
629 case OPT_emit_obj:
630 Opts.ProgramAction = frontend::EmitObj; break;
631 case OPT_fixit_EQ:
632 Opts.FixItSuffix = A->getValue();
633 // fall-through!
634 case OPT_fixit:
635 Opts.ProgramAction = frontend::FixIt; break;
636 case OPT_emit_module:
637 Opts.ProgramAction = frontend::GenerateModule; break;
638 case OPT_emit_pch:
639 Opts.ProgramAction = frontend::GeneratePCH; break;
640 case OPT_emit_pth:
641 Opts.ProgramAction = frontend::GeneratePTH; break;
642 case OPT_init_only:
643 Opts.ProgramAction = frontend::InitOnly; break;
644 case OPT_fsyntax_only:
645 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
646 case OPT_print_decl_contexts:
647 Opts.ProgramAction = frontend::PrintDeclContext; break;
648 case OPT_print_preamble:
649 Opts.ProgramAction = frontend::PrintPreamble; break;
650 case OPT_E:
651 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
652 case OPT_rewrite_macros:
653 Opts.ProgramAction = frontend::RewriteMacros; break;
654 case OPT_rewrite_objc:
655 Opts.ProgramAction = frontend::RewriteObjC; break;
656 case OPT_rewrite_test:
657 Opts.ProgramAction = frontend::RewriteTest; break;
658 case OPT_analyze:
659 Opts.ProgramAction = frontend::RunAnalysis; break;
660 case OPT_migrate:
661 Opts.ProgramAction = frontend::MigrateSource; break;
662 case OPT_Eonly:
663 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
664 }
665 }
666
667 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
668 Opts.Plugins.push_back(A->getValue(0));
669 Opts.ProgramAction = frontend::PluginAction;
670 Opts.ActionName = A->getValue();
671
672 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
673 end = Args.filtered_end(); it != end; ++it) {
674 if ((*it)->getValue(0) == Opts.ActionName)
675 Opts.PluginArgs.push_back((*it)->getValue(1));
676 }
677 }
678
679 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
680 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
681 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
682 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
683 end = Args.filtered_end(); it != end; ++it) {
684 if ((*it)->getValue(0) == Opts.AddPluginActions[i])
685 Opts.AddPluginArgs[i].push_back((*it)->getValue(1));
686 }
687 }
688
689 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
690 Opts.CodeCompletionAt =
691 ParsedSourceLocation::FromString(A->getValue());
692 if (Opts.CodeCompletionAt.FileName.empty())
693 Diags.Report(diag::err_drv_invalid_value)
694 << A->getAsString(Args) << A->getValue();
695 }
696 Opts.DisableFree = Args.hasArg(OPT_disable_free);
697
698 Opts.OutputFile = Args.getLastArgValue(OPT_o);
699 Opts.Plugins = Args.getAllArgValues(OPT_load);
700 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
701 Opts.ShowHelp = Args.hasArg(OPT_help);
702 Opts.ShowStats = Args.hasArg(OPT_print_stats);
703 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
704 Opts.ShowVersion = Args.hasArg(OPT_version);
705 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
706 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
707 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
708 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
709 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
710 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
711 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
712 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
713 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
714
715 Opts.CodeCompleteOpts.IncludeMacros
716 = Args.hasArg(OPT_code_completion_macros);
717 Opts.CodeCompleteOpts.IncludeCodePatterns
718 = Args.hasArg(OPT_code_completion_patterns);
719 Opts.CodeCompleteOpts.IncludeGlobals
720 = !Args.hasArg(OPT_no_code_completion_globals);
721 Opts.CodeCompleteOpts.IncludeBriefComments
722 = Args.hasArg(OPT_code_completion_brief_comments);
723
724 Opts.OverrideRecordLayoutsFile
725 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
726 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
727 OPT_arcmt_modify,
728 OPT_arcmt_migrate)) {
729 switch (A->getOption().getID()) {
730 default:
731 llvm_unreachable("missed a case");
732 case OPT_arcmt_check:
733 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
734 break;
735 case OPT_arcmt_modify:
736 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
737 break;
738 case OPT_arcmt_migrate:
739 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
740 break;
741 }
742 }
743 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
744 Opts.ARCMTMigrateReportOut
745 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
746 Opts.ARCMTMigrateEmitARCErrors
747 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
748
749 if (Args.hasArg(OPT_objcmt_migrate_literals))
750 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
751 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
752 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
753
754 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
755 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
756 Diags.Report(diag::err_drv_argument_not_allowed_with)
757 << "ARC migration" << "ObjC migration";
758 }
759
760 InputKind DashX = IK_None;
761 if (const Arg *A = Args.getLastArg(OPT_x)) {
762 DashX = llvm::StringSwitch<InputKind>(A->getValue())
763 .Case("c", IK_C)
764 .Case("cl", IK_OpenCL)
765 .Case("cuda", IK_CUDA)
766 .Case("c++", IK_CXX)
767 .Case("objective-c", IK_ObjC)
768 .Case("objective-c++", IK_ObjCXX)
769 .Case("cpp-output", IK_PreprocessedC)
770 .Case("assembler-with-cpp", IK_Asm)
771 .Case("c++-cpp-output", IK_PreprocessedCXX)
772 .Case("objective-c-cpp-output", IK_PreprocessedObjC)
773 .Case("objc-cpp-output", IK_PreprocessedObjC)
774 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
775 .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
776 .Case("c-header", IK_C)
777 .Case("cl-header", IK_OpenCL)
778 .Case("objective-c-header", IK_ObjC)
779 .Case("c++-header", IK_CXX)
780 .Case("objective-c++-header", IK_ObjCXX)
781 .Case("ast", IK_AST)
782 .Case("ir", IK_LLVM_IR)
783 .Default(IK_None);
784 if (DashX == IK_None)
785 Diags.Report(diag::err_drv_invalid_value)
786 << A->getAsString(Args) << A->getValue();
787 }
788
789 // '-' is the default input if none is given.
790 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
791 Opts.Inputs.clear();
792 if (Inputs.empty())
793 Inputs.push_back("-");
794 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
795 InputKind IK = DashX;
796 if (IK == IK_None) {
797 IK = FrontendOptions::getInputKindForExtension(
798 StringRef(Inputs[i]).rsplit('.').second);
799 // FIXME: Remove this hack.
800 if (i == 0)
801 DashX = IK;
802 }
803 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
804 }
805
806 return DashX;
807 }
808
GetResourcesPath(const char * Argv0,void * MainAddr)809 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
810 void *MainAddr) {
811 llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
812
813 if (!P.isEmpty()) {
814 P.eraseComponent(); // Remove /clang from foo/bin/clang
815 P.eraseComponent(); // Remove /bin from foo/bin
816
817 // Get foo/lib/clang/<version>/include
818 P.appendComponent("lib");
819 P.appendComponent("clang");
820 P.appendComponent(CLANG_VERSION_STRING);
821 }
822
823 return P.str();
824 }
825
ParseHeaderSearchArgs(HeaderSearchOptions & Opts,ArgList & Args)826 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
827 using namespace options;
828 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
829 Opts.Verbose = Args.hasArg(OPT_v);
830 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
831 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
832 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
833 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
834 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
835 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
836 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path);
837 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
838
839 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro),
840 ie = Args.filtered_end(); it != ie; ++it) {
841 StringRef MacroDef = (*it)->getValue();
842 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first);
843 }
844
845 // Add -I..., -F..., and -index-header-map options in order.
846 bool IsIndexHeaderMap = false;
847 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
848 OPT_index_header_map),
849 ie = Args.filtered_end(); it != ie; ++it) {
850 if ((*it)->getOption().matches(OPT_index_header_map)) {
851 // -index-header-map applies to the next -I or -F.
852 IsIndexHeaderMap = true;
853 continue;
854 }
855
856 frontend::IncludeDirGroup Group
857 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
858
859 Opts.AddPath((*it)->getValue(), Group,
860 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
861 IsIndexHeaderMap = false;
862 }
863
864 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
865 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
866 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
867 OPT_iwithprefixbefore),
868 ie = Args.filtered_end(); it != ie; ++it) {
869 const Arg *A = *it;
870 if (A->getOption().matches(OPT_iprefix))
871 Prefix = A->getValue();
872 else if (A->getOption().matches(OPT_iwithprefix))
873 Opts.AddPath(Prefix.str() + A->getValue(),
874 frontend::After, false, true);
875 else
876 Opts.AddPath(Prefix.str() + A->getValue(),
877 frontend::Angled, false, true);
878 }
879
880 for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
881 ie = Args.filtered_end(); it != ie; ++it)
882 Opts.AddPath((*it)->getValue(), frontend::After, false, true);
883 for (arg_iterator it = Args.filtered_begin(OPT_iquote),
884 ie = Args.filtered_end(); it != ie; ++it)
885 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true);
886 for (arg_iterator it = Args.filtered_begin(OPT_isystem,
887 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
888 Opts.AddPath((*it)->getValue(), frontend::System, false,
889 !(*it)->getOption().matches(OPT_iwithsysroot));
890 for (arg_iterator it = Args.filtered_begin(OPT_iframework),
891 ie = Args.filtered_end(); it != ie; ++it)
892 Opts.AddPath((*it)->getValue(), frontend::System, true, true);
893
894 // Add the paths for the various language specific isystem flags.
895 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
896 ie = Args.filtered_end(); it != ie; ++it)
897 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true);
898 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
899 ie = Args.filtered_end(); it != ie; ++it)
900 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true);
901 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
902 ie = Args.filtered_end(); it != ie; ++it)
903 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true);
904 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
905 ie = Args.filtered_end(); it != ie; ++it)
906 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true);
907
908 // Add the internal paths from a driver that detects standard include paths.
909 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
910 OPT_internal_externc_isystem),
911 E = Args.filtered_end();
912 I != E; ++I) {
913 frontend::IncludeDirGroup Group = frontend::System;
914 if ((*I)->getOption().matches(OPT_internal_externc_isystem))
915 Group = frontend::ExternCSystem;
916 Opts.AddPath((*I)->getValue(), Group, false, true);
917 }
918
919 // Add the path prefixes which are implicitly treated as being system headers.
920 for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix,
921 OPT_ino_system_prefix),
922 E = Args.filtered_end();
923 I != E; ++I)
924 Opts.AddSystemHeaderPrefix((*I)->getValue(),
925 (*I)->getOption().matches(OPT_isystem_prefix));
926 }
927
setLangDefaults(LangOptions & Opts,InputKind IK,LangStandard::Kind LangStd)928 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
929 LangStandard::Kind LangStd) {
930 // Set some properties which depend solely on the input kind; it would be nice
931 // to move these to the language standard, and have the driver resolve the
932 // input kind + language standard.
933 if (IK == IK_Asm) {
934 Opts.AsmPreprocessor = 1;
935 } else if (IK == IK_ObjC ||
936 IK == IK_ObjCXX ||
937 IK == IK_PreprocessedObjC ||
938 IK == IK_PreprocessedObjCXX) {
939 Opts.ObjC1 = Opts.ObjC2 = 1;
940 }
941
942 if (LangStd == LangStandard::lang_unspecified) {
943 // Based on the base language, pick one.
944 switch (IK) {
945 case IK_None:
946 case IK_AST:
947 case IK_LLVM_IR:
948 llvm_unreachable("Invalid input kind!");
949 case IK_OpenCL:
950 LangStd = LangStandard::lang_opencl;
951 break;
952 case IK_CUDA:
953 LangStd = LangStandard::lang_cuda;
954 break;
955 case IK_Asm:
956 case IK_C:
957 case IK_PreprocessedC:
958 case IK_ObjC:
959 case IK_PreprocessedObjC:
960 LangStd = LangStandard::lang_gnu99;
961 break;
962 case IK_CXX:
963 case IK_PreprocessedCXX:
964 case IK_ObjCXX:
965 case IK_PreprocessedObjCXX:
966 LangStd = LangStandard::lang_gnucxx98;
967 break;
968 }
969 }
970
971 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
972 Opts.LineComment = Std.hasLineComments();
973 Opts.C99 = Std.isC99();
974 Opts.C11 = Std.isC11();
975 Opts.CPlusPlus = Std.isCPlusPlus();
976 Opts.CPlusPlus11 = Std.isCPlusPlus11();
977 Opts.CPlusPlus1y = Std.isCPlusPlus1y();
978 Opts.Digraphs = Std.hasDigraphs();
979 Opts.GNUMode = Std.isGNUMode();
980 Opts.GNUInline = !Std.isC99();
981 Opts.HexFloats = Std.hasHexFloats();
982 Opts.ImplicitInt = Std.hasImplicitInt();
983
984 // Set OpenCL Version.
985 if (LangStd == LangStandard::lang_opencl) {
986 Opts.OpenCL = 1;
987 Opts.OpenCLVersion = 100;
988 }
989 else if (LangStd == LangStandard::lang_opencl11) {
990 Opts.OpenCL = 1;
991 Opts.OpenCLVersion = 110;
992 }
993 else if (LangStd == LangStandard::lang_opencl12) {
994 Opts.OpenCL = 1;
995 Opts.OpenCLVersion = 120;
996 }
997
998 // OpenCL has some additional defaults.
999 if (Opts.OpenCL) {
1000 Opts.AltiVec = 0;
1001 Opts.CXXOperatorNames = 1;
1002 Opts.LaxVectorConversions = 0;
1003 Opts.DefaultFPContract = 1;
1004 Opts.NativeHalfType = 1;
1005 }
1006
1007 if (LangStd == LangStandard::lang_cuda)
1008 Opts.CUDA = 1;
1009
1010 // OpenCL and C++ both have bool, true, false keywords.
1011 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1012
1013 // C++ has wchar_t keyword.
1014 Opts.WChar = Opts.CPlusPlus;
1015
1016 Opts.GNUKeywords = Opts.GNUMode;
1017 Opts.CXXOperatorNames = Opts.CPlusPlus;
1018
1019 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1020 // is specified, or -std is set to a conforming mode.
1021 Opts.Trigraphs = !Opts.GNUMode;
1022
1023 Opts.DollarIdents = !Opts.AsmPreprocessor;
1024 }
1025
1026 /// Attempt to parse a visibility value out of the given argument.
parseVisibility(Arg * arg,ArgList & args,DiagnosticsEngine & diags)1027 static Visibility parseVisibility(Arg *arg, ArgList &args,
1028 DiagnosticsEngine &diags) {
1029 StringRef value = arg->getValue();
1030 if (value == "default") {
1031 return DefaultVisibility;
1032 } else if (value == "hidden") {
1033 return HiddenVisibility;
1034 } else if (value == "protected") {
1035 // FIXME: diagnose if target does not support protected visibility
1036 return ProtectedVisibility;
1037 }
1038
1039 diags.Report(diag::err_drv_invalid_value)
1040 << arg->getAsString(args) << value;
1041 return DefaultVisibility;
1042 }
1043
ParseLangArgs(LangOptions & Opts,ArgList & Args,InputKind IK,DiagnosticsEngine & Diags)1044 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1045 DiagnosticsEngine &Diags) {
1046 // FIXME: Cleanup per-file based stuff.
1047 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1048 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1049 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1050 #define LANGSTANDARD(id, name, desc, features) \
1051 .Case(name, LangStandard::lang_##id)
1052 #include "clang/Frontend/LangStandards.def"
1053 .Default(LangStandard::lang_unspecified);
1054 if (LangStd == LangStandard::lang_unspecified)
1055 Diags.Report(diag::err_drv_invalid_value)
1056 << A->getAsString(Args) << A->getValue();
1057 else {
1058 // Valid standard, check to make sure language and standard are compatable.
1059 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1060 switch (IK) {
1061 case IK_C:
1062 case IK_ObjC:
1063 case IK_PreprocessedC:
1064 case IK_PreprocessedObjC:
1065 if (!(Std.isC89() || Std.isC99()))
1066 Diags.Report(diag::err_drv_argument_not_allowed_with)
1067 << A->getAsString(Args) << "C/ObjC";
1068 break;
1069 case IK_CXX:
1070 case IK_ObjCXX:
1071 case IK_PreprocessedCXX:
1072 case IK_PreprocessedObjCXX:
1073 if (!Std.isCPlusPlus())
1074 Diags.Report(diag::err_drv_argument_not_allowed_with)
1075 << A->getAsString(Args) << "C++/ObjC++";
1076 break;
1077 case IK_OpenCL:
1078 if (!Std.isC99())
1079 Diags.Report(diag::err_drv_argument_not_allowed_with)
1080 << A->getAsString(Args) << "OpenCL";
1081 break;
1082 case IK_CUDA:
1083 if (!Std.isCPlusPlus())
1084 Diags.Report(diag::err_drv_argument_not_allowed_with)
1085 << A->getAsString(Args) << "CUDA";
1086 break;
1087 default:
1088 break;
1089 }
1090 }
1091 }
1092
1093 // -cl-std only applies for OpenCL language standards.
1094 // Override the -std option in this case.
1095 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1096 LangStandard::Kind OpenCLLangStd
1097 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1098 .Case("CL", LangStandard::lang_opencl)
1099 .Case("CL1.1", LangStandard::lang_opencl11)
1100 .Case("CL1.2", LangStandard::lang_opencl12)
1101 .Default(LangStandard::lang_unspecified);
1102
1103 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1104 Diags.Report(diag::err_drv_invalid_value)
1105 << A->getAsString(Args) << A->getValue();
1106 }
1107 else
1108 LangStd = OpenCLLangStd;
1109 }
1110
1111 CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1112
1113 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1114 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1115 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1116 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1117 // name, as it doesn't seem a useful distinction.
1118 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1119 Opts.GNUKeywords);
1120
1121 if (Args.hasArg(OPT_fno_operator_names))
1122 Opts.CXXOperatorNames = 0;
1123
1124 if (Opts.ObjC1) {
1125 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1126 StringRef value = arg->getValue();
1127 if (Opts.ObjCRuntime.tryParse(value))
1128 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1129 }
1130
1131 if (Args.hasArg(OPT_fobjc_gc_only))
1132 Opts.setGC(LangOptions::GCOnly);
1133 else if (Args.hasArg(OPT_fobjc_gc))
1134 Opts.setGC(LangOptions::HybridGC);
1135 else if (Args.hasArg(OPT_fobjc_arc)) {
1136 Opts.ObjCAutoRefCount = 1;
1137 if (!Opts.ObjCRuntime.allowsARC())
1138 Diags.Report(diag::err_arc_unsupported_on_runtime);
1139
1140 // Only set ObjCARCWeak if ARC is enabled.
1141 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1142 Opts.ObjCARCWeak = 1;
1143 else
1144 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak();
1145 }
1146
1147 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1148 Opts.ObjCInferRelatedResultType = 0;
1149 }
1150
1151 if (Args.hasArg(OPT_fgnu89_inline))
1152 Opts.GNUInline = 1;
1153
1154 if (Args.hasArg(OPT_fapple_kext)) {
1155 if (!Opts.CPlusPlus)
1156 Diags.Report(diag::warn_c_kext);
1157 else
1158 Opts.AppleKext = 1;
1159 }
1160
1161 if (Args.hasArg(OPT_print_ivar_layout))
1162 Opts.ObjCGCBitmapPrint = 1;
1163 if (Args.hasArg(OPT_fno_constant_cfstrings))
1164 Opts.NoConstantCFStrings = 1;
1165
1166 if (Args.hasArg(OPT_faltivec))
1167 Opts.AltiVec = 1;
1168
1169 if (Args.hasArg(OPT_pthread))
1170 Opts.POSIXThreads = 1;
1171
1172 if (Args.hasArg(OPT_fdelayed_template_parsing))
1173 Opts.DelayedTemplateParsing = 1;
1174
1175 // The value-visibility mode defaults to "default".
1176 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
1177 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
1178 } else {
1179 Opts.setValueVisibilityMode(DefaultVisibility);
1180 }
1181
1182 // The type-visibility mode defaults to the value-visibility mode.
1183 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
1184 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
1185 } else {
1186 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
1187 }
1188
1189 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1190 Opts.InlineVisibilityHidden = 1;
1191
1192 if (Args.hasArg(OPT_ftrapv)) {
1193 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1194 // Set the handler, if one is specified.
1195 Opts.OverflowHandler =
1196 Args.getLastArgValue(OPT_ftrapv_handler);
1197 }
1198 else if (Args.hasArg(OPT_fwrapv))
1199 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1200
1201 if (Args.hasArg(OPT_trigraphs))
1202 Opts.Trigraphs = 1;
1203
1204 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1205 OPT_fno_dollars_in_identifiers,
1206 Opts.DollarIdents);
1207 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1208 Opts.MicrosoftExt
1209 = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility);
1210 Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility);
1211 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
1212 Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1213 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1214 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1215 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1216 Opts.ConstStrings);
1217 if (Args.hasArg(OPT_fno_lax_vector_conversions))
1218 Opts.LaxVectorConversions = 0;
1219 if (Args.hasArg(OPT_fno_threadsafe_statics))
1220 Opts.ThreadsafeStatics = 0;
1221 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1222 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1223 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1224 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1225 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1226
1227 Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1228 Opts.Blocks = Args.hasArg(OPT_fblocks);
1229 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1230 Opts.Modules = Args.hasArg(OPT_fmodules);
1231 Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1232 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
1233 Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1234 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1235 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1236 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1237 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1238 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1239 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1240 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1241 Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1242 Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 512,
1243 Diags);
1244 Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512,
1245 Diags);
1246 Opts.BracketDepth = Args.getLastArgIntValue(OPT_fbracket_depth, 256, Diags);
1247 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1248 Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ,
1249 0, Diags);
1250 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1251 Opts.ObjCConstantStringClass =
1252 Args.getLastArgValue(OPT_fconstant_string_class);
1253 Opts.ObjCDefaultSynthProperties =
1254 Args.hasArg(OPT_fobjc_default_synthesize_properties);
1255 Opts.EncodeExtendedBlockSig =
1256 Args.hasArg(OPT_fencode_extended_block_signature);
1257 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1258 Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags);
1259 Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1260 Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags);
1261 Opts.Static = Args.hasArg(OPT_static_define);
1262 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1263 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
1264 || Args.hasArg(OPT_fdump_record_layouts);
1265 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1266 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1267 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1268 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1269 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1270 Opts.MRTD = Args.hasArg(OPT_mrtd);
1271 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1272 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1273 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1274 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1275 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
1276 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
1277 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1278 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1279
1280 // Check if -fopenmp is specified.
1281 Opts.OpenMP = Args.hasArg(OPT_fopenmp);
1282
1283 // Record whether the __DEPRECATED define was requested.
1284 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1285 OPT_fno_deprecated_macro,
1286 Opts.Deprecated);
1287
1288 // FIXME: Eliminate this dependency.
1289 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
1290 OptSize = getOptimizationLevelSize(Args, IK, Diags);
1291 Opts.Optimize = Opt != 0;
1292 Opts.OptimizeSize = OptSize != 0;
1293
1294 // This is the __NO_INLINE__ define, which just depends on things like the
1295 // optimization level and -fno-inline, not actually whether the backend has
1296 // inlining enabled.
1297 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
1298
1299 Opts.FastMath = Args.hasArg(OPT_ffast_math);
1300 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only);
1301
1302 Opts.RetainCommentsFromSystemHeaders =
1303 Args.hasArg(OPT_fretain_comments_from_system_headers);
1304
1305 unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1306 switch (SSP) {
1307 default:
1308 Diags.Report(diag::err_drv_invalid_value)
1309 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1310 break;
1311 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1312 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
1313 case 2: Opts.setStackProtector(LangOptions::SSPReq); break;
1314 }
1315
1316 // Parse -fsanitize= arguments.
1317 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ);
1318 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) {
1319 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to
1320 // efficiently map string values to them. Perform the mapping indirectly:
1321 // convert strings to enumerated values, then switch over the enum to set
1322 // the right bitfield value.
1323 enum Sanitizer {
1324 #define SANITIZER(NAME, ID) \
1325 ID,
1326 #include "clang/Basic/Sanitizers.def"
1327 Unknown
1328 };
1329 switch (llvm::StringSwitch<unsigned>(Sanitizers[I])
1330 #define SANITIZER(NAME, ID) \
1331 .Case(NAME, ID)
1332 #include "clang/Basic/Sanitizers.def"
1333 .Default(Unknown)) {
1334 #define SANITIZER(NAME, ID) \
1335 case ID: \
1336 Opts.Sanitize.ID = true; \
1337 break;
1338 #include "clang/Basic/Sanitizers.def"
1339
1340 case Unknown:
1341 Diags.Report(diag::err_drv_invalid_value)
1342 << "-fsanitize=" << Sanitizers[I];
1343 break;
1344 }
1345 }
1346 }
1347
ParsePreprocessorArgs(PreprocessorOptions & Opts,ArgList & Args,FileManager & FileMgr,DiagnosticsEngine & Diags)1348 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1349 FileManager &FileMgr,
1350 DiagnosticsEngine &Diags) {
1351 using namespace options;
1352 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1353 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1354 if (const Arg *A = Args.getLastArg(OPT_token_cache))
1355 Opts.TokenCache = A->getValue();
1356 else
1357 Opts.TokenCache = Opts.ImplicitPTHInclude;
1358 Opts.UsePredefines = !Args.hasArg(OPT_undef);
1359 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1360 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1361
1362 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1363 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1364 ie = Args.filtered_end(); it != ie; ++it) {
1365 const Arg *A = *it;
1366 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
1367 }
1368
1369 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1370 StringRef Value(A->getValue());
1371 size_t Comma = Value.find(',');
1372 unsigned Bytes = 0;
1373 unsigned EndOfLine = 0;
1374
1375 if (Comma == StringRef::npos ||
1376 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1377 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1378 Diags.Report(diag::err_drv_preamble_format);
1379 else {
1380 Opts.PrecompiledPreambleBytes.first = Bytes;
1381 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1382 }
1383 }
1384
1385 // Add macros from the command line.
1386 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1387 ie = Args.filtered_end(); it != ie; ++it) {
1388 if ((*it)->getOption().matches(OPT_D))
1389 Opts.addMacroDef((*it)->getValue());
1390 else
1391 Opts.addMacroUndef((*it)->getValue());
1392 }
1393
1394 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1395
1396 // Add the ordered list of -includes.
1397 for (arg_iterator it = Args.filtered_begin(OPT_include),
1398 ie = Args.filtered_end(); it != ie; ++it) {
1399 const Arg *A = *it;
1400 Opts.Includes.push_back(A->getValue());
1401 }
1402
1403 for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1404 ie = Args.filtered_end(); it != ie; ++it) {
1405 const Arg *A = *it;
1406 Opts.ChainedIncludes.push_back(A->getValue());
1407 }
1408
1409 // Include 'altivec.h' if -faltivec option present
1410 if (Args.hasArg(OPT_faltivec))
1411 Opts.Includes.push_back("altivec.h");
1412
1413 for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1414 ie = Args.filtered_end(); it != ie; ++it) {
1415 const Arg *A = *it;
1416 std::pair<StringRef,StringRef> Split =
1417 StringRef(A->getValue()).split(';');
1418
1419 if (Split.second.empty()) {
1420 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1421 continue;
1422 }
1423
1424 Opts.addRemappedFile(Split.first, Split.second);
1425 }
1426
1427 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1428 StringRef Name = A->getValue();
1429 unsigned Library = llvm::StringSwitch<unsigned>(Name)
1430 .Case("libc++", ARCXX_libcxx)
1431 .Case("libstdc++", ARCXX_libstdcxx)
1432 .Case("none", ARCXX_nolib)
1433 .Default(~0U);
1434 if (Library == ~0U)
1435 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1436 else
1437 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1438 }
1439 }
1440
ParsePreprocessorOutputArgs(PreprocessorOutputOptions & Opts,ArgList & Args,frontend::ActionKind Action)1441 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1442 ArgList &Args,
1443 frontend::ActionKind Action) {
1444 using namespace options;
1445
1446 switch (Action) {
1447 case frontend::ASTDeclList:
1448 case frontend::ASTDump:
1449 case frontend::ASTDumpXML:
1450 case frontend::ASTPrint:
1451 case frontend::ASTView:
1452 case frontend::EmitAssembly:
1453 case frontend::EmitBC:
1454 case frontend::EmitHTML:
1455 case frontend::EmitLLVM:
1456 case frontend::EmitLLVMOnly:
1457 case frontend::EmitCodeGenOnly:
1458 case frontend::EmitObj:
1459 case frontend::FixIt:
1460 case frontend::GenerateModule:
1461 case frontend::GeneratePCH:
1462 case frontend::GeneratePTH:
1463 case frontend::ParseSyntaxOnly:
1464 case frontend::PluginAction:
1465 case frontend::PrintDeclContext:
1466 case frontend::RewriteObjC:
1467 case frontend::RewriteTest:
1468 case frontend::RunAnalysis:
1469 case frontend::MigrateSource:
1470 Opts.ShowCPP = 0;
1471 break;
1472
1473 case frontend::DumpRawTokens:
1474 case frontend::DumpTokens:
1475 case frontend::InitOnly:
1476 case frontend::PrintPreamble:
1477 case frontend::PrintPreprocessedInput:
1478 case frontend::RewriteMacros:
1479 case frontend::RunPreprocessorOnly:
1480 Opts.ShowCPP = !Args.hasArg(OPT_dM);
1481 break;
1482 }
1483
1484 Opts.ShowComments = Args.hasArg(OPT_C);
1485 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1486 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1487 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1488 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
1489 }
1490
ParseTargetArgs(TargetOptions & Opts,ArgList & Args)1491 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1492 using namespace options;
1493 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1494 Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1495 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1496 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
1497 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1498 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1499
1500 // Use the default target triple if unspecified.
1501 if (Opts.Triple.empty())
1502 Opts.Triple = llvm::sys::getDefaultTargetTriple();
1503 }
1504
1505 //
1506
CreateFromArgs(CompilerInvocation & Res,const char * const * ArgBegin,const char * const * ArgEnd,DiagnosticsEngine & Diags)1507 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1508 const char *const *ArgBegin,
1509 const char *const *ArgEnd,
1510 DiagnosticsEngine &Diags) {
1511 bool Success = true;
1512
1513 // Parse the arguments.
1514 OwningPtr<OptTable> Opts(createDriverOptTable());
1515 unsigned MissingArgIndex, MissingArgCount;
1516 OwningPtr<InputArgList> Args(
1517 Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1518
1519 // Check for missing argument error.
1520 if (MissingArgCount) {
1521 Diags.Report(diag::err_drv_missing_argument)
1522 << Args->getArgString(MissingArgIndex) << MissingArgCount;
1523 Success = false;
1524 }
1525
1526 // Issue errors on unknown arguments.
1527 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1528 ie = Args->filtered_end(); it != ie; ++it) {
1529 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1530 Success = false;
1531 }
1532
1533 // Issue errors on arguments that are not valid for CC1.
1534 for (ArgList::iterator I = Args->begin(), E = Args->end();
1535 I != E; ++I) {
1536 if (!(*I)->getOption().hasFlag(options::CC1Option)) {
1537 Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args);
1538 Success = false;
1539 }
1540 }
1541
1542 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success;
1543 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
1544 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1545 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
1546 && Success;
1547 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args);
1548 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1549 // FIXME: We shouldn't have to pass the DashX option around here
1550 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1551 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags)
1552 && Success;
1553 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1554 if (DashX != IK_AST && DashX != IK_LLVM_IR) {
1555 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
1556 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
1557 Res.getLangOpts()->ObjCExceptions = 1;
1558 }
1559 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1560 // PCH file and find the original header name. Remove the need to do that in
1561 // ParsePreprocessorArgs and remove the FileManager
1562 // parameters from the function and the "FileManager.h" #include.
1563 FileManager FileMgr(Res.getFileSystemOpts());
1564 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1565 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args,
1566 Res.getFrontendOpts().ProgramAction);
1567 ParseTargetArgs(Res.getTargetOpts(), *Args);
1568
1569 return Success;
1570 }
1571
1572 namespace {
1573
1574 class ModuleSignature {
1575 SmallVector<uint64_t, 16> Data;
1576 unsigned CurBit;
1577 uint64_t CurValue;
1578
1579 public:
ModuleSignature()1580 ModuleSignature() : CurBit(0), CurValue(0) { }
1581
1582 void add(uint64_t Value, unsigned Bits);
1583 void add(StringRef Value);
1584 void flush();
1585
1586 llvm::APInt getAsInteger() const;
1587 };
1588 }
1589
add(uint64_t Value,unsigned int NumBits)1590 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
1591 CurValue |= Value << CurBit;
1592 if (CurBit + NumBits < 64) {
1593 CurBit += NumBits;
1594 return;
1595 }
1596
1597 // Add the current word.
1598 Data.push_back(CurValue);
1599
1600 if (CurBit)
1601 CurValue = Value >> (64-CurBit);
1602 else
1603 CurValue = 0;
1604 CurBit = (CurBit+NumBits) & 63;
1605 }
1606
flush()1607 void ModuleSignature::flush() {
1608 if (CurBit == 0)
1609 return;
1610
1611 Data.push_back(CurValue);
1612 CurBit = 0;
1613 CurValue = 0;
1614 }
1615
add(StringRef Value)1616 void ModuleSignature::add(StringRef Value) {
1617 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
1618 add(*I, 8);
1619 }
1620
getAsInteger() const1621 llvm::APInt ModuleSignature::getAsInteger() const {
1622 return llvm::APInt(Data.size() * 64, Data);
1623 }
1624
getModuleHash() const1625 std::string CompilerInvocation::getModuleHash() const {
1626 using llvm::hash_code;
1627 using llvm::hash_value;
1628 using llvm::hash_combine;
1629
1630 // Start the signature with the compiler version.
1631 // FIXME: We'd rather use something more cryptographically sound than
1632 // CityHash, but this will do for now.
1633 hash_code code = hash_value(getClangFullRepositoryVersion());
1634
1635 // Extend the signature with the language options
1636 #define LANGOPT(Name, Bits, Default, Description) \
1637 code = hash_combine(code, LangOpts->Name);
1638 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1639 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
1640 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
1641 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
1642 #include "clang/Basic/LangOptions.def"
1643
1644 // Extend the signature with the target options.
1645 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
1646 TargetOpts->ABI, TargetOpts->CXXABI,
1647 TargetOpts->LinkerVersion);
1648 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
1649 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
1650
1651 // Extend the signature with preprocessor options.
1652 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
1653 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
1654 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
1655
1656 std::vector<StringRef> MacroDefs;
1657 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
1658 I = getPreprocessorOpts().Macros.begin(),
1659 IEnd = getPreprocessorOpts().Macros.end();
1660 I != IEnd; ++I) {
1661 // If we're supposed to ignore this macro for the purposes of modules,
1662 // don't put it into the hash.
1663 if (!hsOpts.ModulesIgnoreMacros.empty()) {
1664 // Check whether we're ignoring this macro.
1665 StringRef MacroDef = I->first;
1666 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first))
1667 continue;
1668 }
1669
1670 code = hash_combine(code, I->first, I->second);
1671 }
1672
1673 // Extend the signature with the sysroot.
1674 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes,
1675 hsOpts.UseStandardSystemIncludes,
1676 hsOpts.UseStandardCXXIncludes,
1677 hsOpts.UseLibcxx);
1678
1679 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
1680 }
1681