1 //===--- CompilerInvocation.cpp -------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "clang/Frontend/CompilerInvocation.h"
11 #include "clang/Basic/FileManager.h"
12 #include "clang/Basic/Version.h"
13 #include "clang/Driver/DriverDiagnostic.h"
14 #include "clang/Driver/Options.h"
15 #include "clang/Driver/Util.h"
16 #include "clang/Frontend/FrontendDiagnostic.h"
17 #include "clang/Frontend/LangStandard.h"
18 #include "clang/Frontend/Utils.h"
19 #include "clang/Lex/HeaderSearchOptions.h"
20 #include "clang/Serialization/ASTReader.h"
21 #include "llvm/ADT/Hashing.h"
22 #include "llvm/ADT/SmallVector.h"
23 #include "llvm/ADT/STLExtras.h"
24 #include "llvm/ADT/StringExtras.h"
25 #include "llvm/ADT/StringSwitch.h"
26 #include "llvm/ADT/Triple.h"
27 #include "llvm/Option/Arg.h"
28 #include "llvm/Option/ArgList.h"
29 #include "llvm/Option/OptTable.h"
30 #include "llvm/Option/Option.h"
31 #include "llvm/Support/CodeGen.h"
32 #include "llvm/Support/ErrorHandling.h"
33 #include "llvm/Support/FileSystem.h"
34 #include "llvm/Support/Host.h"
35 #include "llvm/Support/Path.h"
36 #include "llvm/Support/Process.h"
37 #include <atomic>
38 #include <memory>
39 #include <sys/stat.h>
40 #include <system_error>
41 using namespace clang;
42
43 //===----------------------------------------------------------------------===//
44 // Initialization.
45 //===----------------------------------------------------------------------===//
46
CompilerInvocationBase()47 CompilerInvocationBase::CompilerInvocationBase()
48 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
49 DiagnosticOpts(new DiagnosticOptions()),
50 HeaderSearchOpts(new HeaderSearchOptions()),
51 PreprocessorOpts(new PreprocessorOptions()) {}
52
CompilerInvocationBase(const CompilerInvocationBase & X)53 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
54 : RefCountedBase<CompilerInvocation>(),
55 LangOpts(new LangOptions(*X.getLangOpts())),
56 TargetOpts(new TargetOptions(X.getTargetOpts())),
57 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
58 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
59 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
60
~CompilerInvocationBase()61 CompilerInvocationBase::~CompilerInvocationBase() {}
62
63 //===----------------------------------------------------------------------===//
64 // Deserialization (from args)
65 //===----------------------------------------------------------------------===//
66
67 using namespace clang::driver;
68 using namespace clang::driver::options;
69 using namespace llvm::opt;
70
71 //
72
getOptimizationLevel(ArgList & Args,InputKind IK,DiagnosticsEngine & Diags)73 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
74 DiagnosticsEngine &Diags) {
75 unsigned DefaultOpt = 0;
76 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
77 DefaultOpt = 2;
78
79 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
80 if (A->getOption().matches(options::OPT_O0))
81 return 0;
82
83 if (A->getOption().matches(options::OPT_Ofast))
84 return 3;
85
86 assert (A->getOption().matches(options::OPT_O));
87
88 StringRef S(A->getValue());
89 if (S == "s" || S == "z" || S.empty())
90 return 2;
91
92 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
93 }
94
95 return DefaultOpt;
96 }
97
getOptimizationLevelSize(ArgList & Args)98 static unsigned getOptimizationLevelSize(ArgList &Args) {
99 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
100 if (A->getOption().matches(options::OPT_O)) {
101 switch (A->getValue()[0]) {
102 default:
103 return 0;
104 case 's':
105 return 1;
106 case 'z':
107 return 2;
108 }
109 }
110 }
111 return 0;
112 }
113
addWarningArgs(ArgList & Args,std::vector<std::string> & Warnings)114 static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) {
115 for (arg_iterator I = Args.filtered_begin(OPT_W_Group),
116 E = Args.filtered_end(); I != E; ++I) {
117 Arg *A = *I;
118 // If the argument is a pure flag, add its name (minus the "W" at the beginning)
119 // to the warning list. Else, add its value (for the OPT_W case).
120 if (A->getOption().getKind() == Option::FlagClass) {
121 Warnings.push_back(A->getOption().getName().substr(1));
122 } else {
123 for (unsigned Idx = 0, End = A->getNumValues();
124 Idx < End; ++Idx) {
125 StringRef V = A->getValue(Idx);
126 // "-Wl," and such are not warning options.
127 // FIXME: Should be handled by putting these in separate flags.
128 if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,"))
129 continue;
130
131 Warnings.push_back(V);
132 }
133 }
134 }
135 }
136
ParseAnalyzerArgs(AnalyzerOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags)137 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
138 DiagnosticsEngine &Diags) {
139 using namespace options;
140 bool Success = true;
141 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
142 StringRef Name = A->getValue();
143 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
144 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
145 .Case(CMDFLAG, NAME##Model)
146 #include "clang/StaticAnalyzer/Core/Analyses.def"
147 .Default(NumStores);
148 if (Value == NumStores) {
149 Diags.Report(diag::err_drv_invalid_value)
150 << A->getAsString(Args) << Name;
151 Success = false;
152 } else {
153 Opts.AnalysisStoreOpt = Value;
154 }
155 }
156
157 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
158 StringRef Name = A->getValue();
159 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
160 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
161 .Case(CMDFLAG, NAME##Model)
162 #include "clang/StaticAnalyzer/Core/Analyses.def"
163 .Default(NumConstraints);
164 if (Value == NumConstraints) {
165 Diags.Report(diag::err_drv_invalid_value)
166 << A->getAsString(Args) << Name;
167 Success = false;
168 } else {
169 Opts.AnalysisConstraintsOpt = Value;
170 }
171 }
172
173 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
174 StringRef Name = A->getValue();
175 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
176 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
177 .Case(CMDFLAG, PD_##NAME)
178 #include "clang/StaticAnalyzer/Core/Analyses.def"
179 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
180 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
181 Diags.Report(diag::err_drv_invalid_value)
182 << A->getAsString(Args) << Name;
183 Success = false;
184 } else {
185 Opts.AnalysisDiagOpt = Value;
186 }
187 }
188
189 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
190 StringRef Name = A->getValue();
191 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
192 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
193 .Case(CMDFLAG, NAME)
194 #include "clang/StaticAnalyzer/Core/Analyses.def"
195 .Default(NumPurgeModes);
196 if (Value == NumPurgeModes) {
197 Diags.Report(diag::err_drv_invalid_value)
198 << A->getAsString(Args) << Name;
199 Success = false;
200 } else {
201 Opts.AnalysisPurgeOpt = Value;
202 }
203 }
204
205 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
206 StringRef Name = A->getValue();
207 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
208 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
209 .Case(CMDFLAG, NAME)
210 #include "clang/StaticAnalyzer/Core/Analyses.def"
211 .Default(NumInliningModes);
212 if (Value == NumInliningModes) {
213 Diags.Report(diag::err_drv_invalid_value)
214 << A->getAsString(Args) << Name;
215 Success = false;
216 } else {
217 Opts.InliningMode = Value;
218 }
219 }
220
221 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
222 Opts.visualizeExplodedGraphWithGraphViz =
223 Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
224 Opts.visualizeExplodedGraphWithUbiGraph =
225 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
226 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
227 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
228 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
229 Opts.AnalyzeNestedBlocks =
230 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
231 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume);
232 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
233 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
234 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
235 Opts.maxBlockVisitOnPath =
236 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags);
237 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
238 Opts.InlineMaxStackDepth =
239 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth,
240 Opts.InlineMaxStackDepth, Diags);
241
242 Opts.CheckersControlList.clear();
243 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
244 OPT_analyzer_disable_checker),
245 ie = Args.filtered_end(); it != ie; ++it) {
246 const Arg *A = *it;
247 A->claim();
248 bool enable = (A->getOption().getID() == OPT_analyzer_checker);
249 // We can have a list of comma separated checker names, e.g:
250 // '-analyzer-checker=cocoa,unix'
251 StringRef checkerList = A->getValue();
252 SmallVector<StringRef, 4> checkers;
253 checkerList.split(checkers, ",");
254 for (unsigned i = 0, e = checkers.size(); i != e; ++i)
255 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
256 }
257
258 // Go through the analyzer configuration options.
259 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config),
260 ie = Args.filtered_end(); it != ie; ++it) {
261 const Arg *A = *it;
262 A->claim();
263 // We can have a list of comma separated config names, e.g:
264 // '-analyzer-config key1=val1,key2=val2'
265 StringRef configList = A->getValue();
266 SmallVector<StringRef, 4> configVals;
267 configList.split(configVals, ",");
268 for (unsigned i = 0, e = configVals.size(); i != e; ++i) {
269 StringRef key, val;
270 std::tie(key, val) = configVals[i].split("=");
271 if (val.empty()) {
272 Diags.Report(SourceLocation(),
273 diag::err_analyzer_config_no_value) << configVals[i];
274 Success = false;
275 break;
276 }
277 if (val.find('=') != StringRef::npos) {
278 Diags.Report(SourceLocation(),
279 diag::err_analyzer_config_multiple_values)
280 << configVals[i];
281 Success = false;
282 break;
283 }
284 Opts.Config[key] = val;
285 }
286 }
287
288 return Success;
289 }
290
ParseMigratorArgs(MigratorOptions & Opts,ArgList & Args)291 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
292 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
293 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
294 return true;
295 }
296
ParseCommentArgs(CommentOptions & Opts,ArgList & Args)297 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
298 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
299 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments);
300 }
301
getCodeModel(ArgList & Args,DiagnosticsEngine & Diags)302 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) {
303 if (Arg *A = Args.getLastArg(OPT_mcode_model)) {
304 StringRef Value = A->getValue();
305 if (Value == "small" || Value == "kernel" || Value == "medium" ||
306 Value == "large")
307 return Value;
308 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
309 }
310 return "default";
311 }
312
313 /// \brief Create a new Regex instance out of the string value in \p RpassArg.
314 /// It returns a pointer to the newly generated Regex instance.
315 static std::shared_ptr<llvm::Regex>
GenerateOptimizationRemarkRegex(DiagnosticsEngine & Diags,ArgList & Args,Arg * RpassArg)316 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args,
317 Arg *RpassArg) {
318 StringRef Val = RpassArg->getValue();
319 std::string RegexError;
320 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
321 if (!Pattern->isValid(RegexError)) {
322 Diags.Report(diag::err_drv_optimization_remark_pattern)
323 << RegexError << RpassArg->getAsString(Args);
324 Pattern.reset();
325 }
326 return Pattern;
327 }
328
ParseCodeGenArgs(CodeGenOptions & Opts,ArgList & Args,InputKind IK,DiagnosticsEngine & Diags,const TargetOptions & TargetOpts)329 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
330 DiagnosticsEngine &Diags,
331 const TargetOptions &TargetOpts) {
332 using namespace options;
333 bool Success = true;
334
335 Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
336 // TODO: This could be done in Driver
337 unsigned MaxOptLevel = 3;
338 if (Opts.OptimizationLevel > MaxOptLevel) {
339 // If the optimization level is not supported, fall back on the default optimization
340 Diags.Report(diag::warn_drv_optimization_value)
341 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
342 Opts.OptimizationLevel = MaxOptLevel;
343 }
344
345 // We must always run at least the always inlining pass.
346 Opts.setInlining(
347 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
348 : CodeGenOptions::OnlyAlwaysInlining);
349 // -fno-inline-functions overrides OptimizationLevel > 1.
350 Opts.NoInline = Args.hasArg(OPT_fno_inline);
351 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ?
352 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining());
353
354 if (Args.hasArg(OPT_gline_tables_only)) {
355 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly);
356 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) ||
357 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) {
358 bool Default = false;
359 // Until dtrace (via CTF) and LLDB can deal with distributed debug info,
360 // Darwin and FreeBSD default to standalone/full debug info.
361 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() ||
362 llvm::Triple(TargetOpts.Triple).isOSFreeBSD())
363 Default = true;
364
365 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default))
366 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo);
367 else
368 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo);
369 }
370 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
371 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
372 if (Args.hasArg(OPT_gdwarf_2))
373 Opts.DwarfVersion = 2;
374 else if (Args.hasArg(OPT_gdwarf_3))
375 Opts.DwarfVersion = 3;
376 else if (Args.hasArg(OPT_gdwarf_4))
377 Opts.DwarfVersion = 4;
378 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo)
379 // Default Dwarf version is 4 if we are generating debug information.
380 Opts.DwarfVersion = 4;
381
382 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
383 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
384 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
385 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
386 OPT_fuse_register_sized_bitfield_access);
387 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
388 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
389 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
390 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
391 Opts.NoCommon = Args.hasArg(OPT_fno_common);
392 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
393 Opts.OptimizeSize = getOptimizationLevelSize(Args);
394 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
395 Args.hasArg(OPT_ffreestanding));
396 Opts.UnrollLoops =
397 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
398 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize));
399 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
400
401 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
402 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
403 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
404 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate);
405 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ);
406 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
407 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
408 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
409 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
410 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
411 Opts.CodeModel = getCodeModel(Args, Diags);
412 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
413 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
414 Opts.DisableFree = Args.hasArg(OPT_disable_free);
415 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
416 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
417 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
418 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
419 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
420 Args.hasArg(OPT_cl_finite_math_only)||
421 Args.hasArg(OPT_cl_fast_relaxed_math));
422 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
423 Args.hasArg(OPT_cl_finite_math_only)||
424 Args.hasArg(OPT_cl_fast_relaxed_math));
425 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
426 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
427 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
428 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
429 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
430 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
431 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
432 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
433 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
434 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
435 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
436 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
437 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
438 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
439 Args.hasArg(OPT_cl_fast_relaxed_math);
440 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
441 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
442 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
443 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
444
445 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
446 OPT_fno_function_sections, false);
447 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
448 OPT_fno_data_sections, false);
449
450 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
451 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
452 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
453
454 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
455 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
456 Opts.SanitizeRecover = !Args.hasArg(OPT_fno_sanitize_recover);
457
458 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
459 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
460 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
461 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
462 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
463 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
464 Opts.CoverageNoFunctionNamesInData =
465 Args.hasArg(OPT_coverage_no_function_names_in_data);
466 if (Args.hasArg(OPT_coverage_version_EQ)) {
467 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
468 if (CoverageVersion.size() != 4) {
469 Diags.Report(diag::err_drv_invalid_value)
470 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
471 << CoverageVersion;
472 } else {
473 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
474 }
475 }
476 }
477
478 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
479 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
480 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
481 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
482 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
483 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
484 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist);
485 Opts.SanitizeMemoryTrackOrigins =
486 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
487 Opts.SanitizeUndefinedTrapOnError =
488 Args.hasArg(OPT_fsanitize_undefined_trap_on_error);
489 Opts.SSPBufferSize =
490 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
491 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
492 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
493 StringRef Val = A->getValue();
494 unsigned StackAlignment = Opts.StackAlignment;
495 Val.getAsInteger(10, StackAlignment);
496 Opts.StackAlignment = StackAlignment;
497 }
498
499 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
500 StringRef Name = A->getValue();
501 unsigned Method = llvm::StringSwitch<unsigned>(Name)
502 .Case("legacy", CodeGenOptions::Legacy)
503 .Case("non-legacy", CodeGenOptions::NonLegacy)
504 .Case("mixed", CodeGenOptions::Mixed)
505 .Default(~0U);
506 if (Method == ~0U) {
507 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
508 Success = false;
509 } else {
510 Opts.setObjCDispatchMethod(
511 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
512 }
513 }
514
515 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
516 StringRef Name = A->getValue();
517 unsigned Model = llvm::StringSwitch<unsigned>(Name)
518 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
519 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
520 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
521 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
522 .Default(~0U);
523 if (Model == ~0U) {
524 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
525 Success = false;
526 } else {
527 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
528 }
529 }
530
531 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
532 StringRef Val = A->getValue();
533 if (Val == "fast")
534 Opts.setFPContractMode(CodeGenOptions::FPC_Fast);
535 else if (Val == "on")
536 Opts.setFPContractMode(CodeGenOptions::FPC_On);
537 else if (Val == "off")
538 Opts.setFPContractMode(CodeGenOptions::FPC_Off);
539 else
540 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
541 }
542
543 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
544 if (A->getOption().matches(OPT_fpcc_struct_return)) {
545 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
546 } else {
547 assert(A->getOption().matches(OPT_freg_struct_return));
548 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
549 }
550 }
551
552 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
553 bool NeedLocTracking = false;
554
555 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
556 Opts.OptimizationRemarkPattern =
557 GenerateOptimizationRemarkRegex(Diags, Args, A);
558 NeedLocTracking = true;
559 }
560
561 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
562 Opts.OptimizationRemarkMissedPattern =
563 GenerateOptimizationRemarkRegex(Diags, Args, A);
564 NeedLocTracking = true;
565 }
566
567 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
568 Opts.OptimizationRemarkAnalysisPattern =
569 GenerateOptimizationRemarkRegex(Diags, Args, A);
570 NeedLocTracking = true;
571 }
572
573 // If the user requested one of the flags in the -Rpass family, make sure
574 // that the backend tracks source location information.
575 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo)
576 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly);
577
578 return Success;
579 }
580
ParseDependencyOutputArgs(DependencyOutputOptions & Opts,ArgList & Args)581 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
582 ArgList &Args) {
583 using namespace options;
584 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
585 Opts.Targets = Args.getAllArgValues(OPT_MT);
586 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
587 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
588 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
589 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
590 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
591 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
592 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
593 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
594 Opts.ModuleDependencyOutputDir =
595 Args.getLastArgValue(OPT_module_dependency_dir);
596 }
597
ParseDiagnosticArgs(DiagnosticOptions & Opts,ArgList & Args,DiagnosticsEngine * Diags)598 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
599 DiagnosticsEngine *Diags) {
600 using namespace options;
601 bool Success = true;
602
603 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
604 Opts.DiagnosticSerializationFile =
605 Args.getLastArgValue(OPT_diagnostic_serialized_file);
606 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
607 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
608 Opts.Pedantic = Args.hasArg(OPT_pedantic);
609 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
610 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
611 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
612 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
613 OPT_fno_show_column,
614 /*Default=*/true);
615 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
616 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
617 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
618
619 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
620
621 // Default behavior is to not to show note include stacks.
622 Opts.ShowNoteIncludeStack = false;
623 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
624 OPT_fno_diagnostics_show_note_include_stack))
625 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
626 Opts.ShowNoteIncludeStack = true;
627
628 StringRef ShowOverloads =
629 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
630 if (ShowOverloads == "best")
631 Opts.setShowOverloads(Ovl_Best);
632 else if (ShowOverloads == "all")
633 Opts.setShowOverloads(Ovl_All);
634 else {
635 Success = false;
636 if (Diags)
637 Diags->Report(diag::err_drv_invalid_value)
638 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
639 << ShowOverloads;
640 }
641
642 StringRef ShowCategory =
643 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
644 if (ShowCategory == "none")
645 Opts.ShowCategories = 0;
646 else if (ShowCategory == "id")
647 Opts.ShowCategories = 1;
648 else if (ShowCategory == "name")
649 Opts.ShowCategories = 2;
650 else {
651 Success = false;
652 if (Diags)
653 Diags->Report(diag::err_drv_invalid_value)
654 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
655 << ShowCategory;
656 }
657
658 StringRef Format =
659 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
660 if (Format == "clang")
661 Opts.setFormat(DiagnosticOptions::Clang);
662 else if (Format == "msvc")
663 Opts.setFormat(DiagnosticOptions::Msvc);
664 else if (Format == "msvc-fallback") {
665 Opts.setFormat(DiagnosticOptions::Msvc);
666 Opts.CLFallbackMode = true;
667 } else if (Format == "vi")
668 Opts.setFormat(DiagnosticOptions::Vi);
669 else {
670 Success = false;
671 if (Diags)
672 Diags->Report(diag::err_drv_invalid_value)
673 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
674 << Format;
675 }
676
677 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
678 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
679 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
680 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
681 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
682 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
683 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
684 Opts.MacroBacktraceLimit =
685 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
686 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
687 Opts.TemplateBacktraceLimit = getLastArgIntValue(
688 Args, OPT_ftemplate_backtrace_limit,
689 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
690 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
691 Args, OPT_fconstexpr_backtrace_limit,
692 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
693 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
694 DiagnosticOptions::DefaultTabStop, Diags);
695 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
696 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
697 if (Diags)
698 Diags->Report(diag::warn_ignoring_ftabstop_value)
699 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
700 }
701 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
702 addWarningArgs(Args, Opts.Warnings);
703
704 return Success;
705 }
706
ParseFileSystemArgs(FileSystemOptions & Opts,ArgList & Args)707 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
708 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
709 }
710
ParseFrontendArgs(FrontendOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags)711 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
712 DiagnosticsEngine &Diags) {
713 using namespace options;
714 Opts.ProgramAction = frontend::ParseSyntaxOnly;
715 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
716 switch (A->getOption().getID()) {
717 default:
718 llvm_unreachable("Invalid option in group!");
719 case OPT_ast_list:
720 Opts.ProgramAction = frontend::ASTDeclList; break;
721 case OPT_ast_dump:
722 Opts.ProgramAction = frontend::ASTDump; break;
723 case OPT_ast_print:
724 Opts.ProgramAction = frontend::ASTPrint; break;
725 case OPT_ast_view:
726 Opts.ProgramAction = frontend::ASTView; break;
727 case OPT_dump_raw_tokens:
728 Opts.ProgramAction = frontend::DumpRawTokens; break;
729 case OPT_dump_tokens:
730 Opts.ProgramAction = frontend::DumpTokens; break;
731 case OPT_S:
732 Opts.ProgramAction = frontend::EmitAssembly; break;
733 case OPT_emit_llvm_bc:
734 Opts.ProgramAction = frontend::EmitBC; break;
735 case OPT_emit_html:
736 Opts.ProgramAction = frontend::EmitHTML; break;
737 case OPT_emit_llvm:
738 Opts.ProgramAction = frontend::EmitLLVM; break;
739 case OPT_emit_llvm_only:
740 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
741 case OPT_emit_codegen_only:
742 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
743 case OPT_emit_obj:
744 Opts.ProgramAction = frontend::EmitObj; break;
745 case OPT_fixit_EQ:
746 Opts.FixItSuffix = A->getValue();
747 // fall-through!
748 case OPT_fixit:
749 Opts.ProgramAction = frontend::FixIt; break;
750 case OPT_emit_module:
751 Opts.ProgramAction = frontend::GenerateModule; break;
752 case OPT_emit_pch:
753 Opts.ProgramAction = frontend::GeneratePCH; break;
754 case OPT_emit_pth:
755 Opts.ProgramAction = frontend::GeneratePTH; break;
756 case OPT_init_only:
757 Opts.ProgramAction = frontend::InitOnly; break;
758 case OPT_fsyntax_only:
759 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
760 case OPT_module_file_info:
761 Opts.ProgramAction = frontend::ModuleFileInfo; break;
762 case OPT_verify_pch:
763 Opts.ProgramAction = frontend::VerifyPCH; break;
764 case OPT_print_decl_contexts:
765 Opts.ProgramAction = frontend::PrintDeclContext; break;
766 case OPT_print_preamble:
767 Opts.ProgramAction = frontend::PrintPreamble; break;
768 case OPT_E:
769 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
770 case OPT_rewrite_macros:
771 Opts.ProgramAction = frontend::RewriteMacros; break;
772 case OPT_rewrite_objc:
773 Opts.ProgramAction = frontend::RewriteObjC; break;
774 case OPT_rewrite_test:
775 Opts.ProgramAction = frontend::RewriteTest; break;
776 case OPT_analyze:
777 Opts.ProgramAction = frontend::RunAnalysis; break;
778 case OPT_migrate:
779 Opts.ProgramAction = frontend::MigrateSource; break;
780 case OPT_Eonly:
781 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
782 }
783 }
784
785 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
786 Opts.Plugins.push_back(A->getValue(0));
787 Opts.ProgramAction = frontend::PluginAction;
788 Opts.ActionName = A->getValue();
789
790 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
791 end = Args.filtered_end(); it != end; ++it) {
792 if ((*it)->getValue(0) == Opts.ActionName)
793 Opts.PluginArgs.push_back((*it)->getValue(1));
794 }
795 }
796
797 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
798 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
799 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
800 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
801 end = Args.filtered_end(); it != end; ++it) {
802 if ((*it)->getValue(0) == Opts.AddPluginActions[i])
803 Opts.AddPluginArgs[i].push_back((*it)->getValue(1));
804 }
805 }
806
807 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
808 Opts.CodeCompletionAt =
809 ParsedSourceLocation::FromString(A->getValue());
810 if (Opts.CodeCompletionAt.FileName.empty())
811 Diags.Report(diag::err_drv_invalid_value)
812 << A->getAsString(Args) << A->getValue();
813 }
814 Opts.DisableFree = Args.hasArg(OPT_disable_free);
815
816 Opts.OutputFile = Args.getLastArgValue(OPT_o);
817 Opts.Plugins = Args.getAllArgValues(OPT_load);
818 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
819 Opts.ShowHelp = Args.hasArg(OPT_help);
820 Opts.ShowStats = Args.hasArg(OPT_print_stats);
821 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
822 Opts.ShowVersion = Args.hasArg(OPT_version);
823 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
824 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
825 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
826 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
827 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
828 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
829 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
830 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
831 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
832 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
833
834 Opts.CodeCompleteOpts.IncludeMacros
835 = Args.hasArg(OPT_code_completion_macros);
836 Opts.CodeCompleteOpts.IncludeCodePatterns
837 = Args.hasArg(OPT_code_completion_patterns);
838 Opts.CodeCompleteOpts.IncludeGlobals
839 = !Args.hasArg(OPT_no_code_completion_globals);
840 Opts.CodeCompleteOpts.IncludeBriefComments
841 = Args.hasArg(OPT_code_completion_brief_comments);
842
843 Opts.OverrideRecordLayoutsFile
844 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
845 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
846 OPT_arcmt_modify,
847 OPT_arcmt_migrate)) {
848 switch (A->getOption().getID()) {
849 default:
850 llvm_unreachable("missed a case");
851 case OPT_arcmt_check:
852 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
853 break;
854 case OPT_arcmt_modify:
855 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
856 break;
857 case OPT_arcmt_migrate:
858 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
859 break;
860 }
861 }
862 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
863 Opts.ARCMTMigrateReportOut
864 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
865 Opts.ARCMTMigrateEmitARCErrors
866 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
867
868 if (Args.hasArg(OPT_objcmt_migrate_literals))
869 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
870 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
871 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
872 if (Args.hasArg(OPT_objcmt_migrate_property))
873 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
874 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
875 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
876 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
877 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
878 if (Args.hasArg(OPT_objcmt_migrate_annotation))
879 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
880 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
881 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
882 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
883 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
884 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
885 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
886 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
887 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
888 if (Args.hasArg(OPT_objcmt_atomic_property))
889 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
890 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
891 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
892 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
893 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
894 if (Args.hasArg(OPT_objcmt_migrate_all))
895 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
896
897 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
898
899 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
900 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
901 Diags.Report(diag::err_drv_argument_not_allowed_with)
902 << "ARC migration" << "ObjC migration";
903 }
904
905 InputKind DashX = IK_None;
906 if (const Arg *A = Args.getLastArg(OPT_x)) {
907 DashX = llvm::StringSwitch<InputKind>(A->getValue())
908 .Case("c", IK_C)
909 .Case("cl", IK_OpenCL)
910 .Case("cuda", IK_CUDA)
911 .Case("c++", IK_CXX)
912 .Case("objective-c", IK_ObjC)
913 .Case("objective-c++", IK_ObjCXX)
914 .Case("cpp-output", IK_PreprocessedC)
915 .Case("assembler-with-cpp", IK_Asm)
916 .Case("c++-cpp-output", IK_PreprocessedCXX)
917 .Case("objective-c-cpp-output", IK_PreprocessedObjC)
918 .Case("objc-cpp-output", IK_PreprocessedObjC)
919 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
920 .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
921 .Case("c-header", IK_C)
922 .Case("cl-header", IK_OpenCL)
923 .Case("objective-c-header", IK_ObjC)
924 .Case("c++-header", IK_CXX)
925 .Case("objective-c++-header", IK_ObjCXX)
926 .Cases("ast", "pcm", IK_AST)
927 .Case("ir", IK_LLVM_IR)
928 .Default(IK_None);
929 if (DashX == IK_None)
930 Diags.Report(diag::err_drv_invalid_value)
931 << A->getAsString(Args) << A->getValue();
932 }
933
934 // '-' is the default input if none is given.
935 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
936 Opts.Inputs.clear();
937 if (Inputs.empty())
938 Inputs.push_back("-");
939 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
940 InputKind IK = DashX;
941 if (IK == IK_None) {
942 IK = FrontendOptions::getInputKindForExtension(
943 StringRef(Inputs[i]).rsplit('.').second);
944 // FIXME: Remove this hack.
945 if (i == 0)
946 DashX = IK;
947 }
948 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
949 }
950
951 return DashX;
952 }
953
GetResourcesPath(const char * Argv0,void * MainAddr)954 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
955 void *MainAddr) {
956 SmallString<128> P(llvm::sys::fs::getMainExecutable(Argv0, MainAddr));
957
958 if (!P.empty()) {
959 llvm::sys::path::remove_filename(P); // Remove /clang from foo/bin/clang
960 llvm::sys::path::remove_filename(P); // Remove /bin from foo/bin
961
962 // Get foo/lib/clang/<version>/include
963 llvm::sys::path::append(P, "lib", "clang", CLANG_VERSION_STRING);
964 }
965
966 return P.str();
967 }
968
ParseHeaderSearchArgs(HeaderSearchOptions & Opts,ArgList & Args)969 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
970 using namespace options;
971 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
972 Opts.Verbose = Args.hasArg(OPT_v);
973 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
974 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
975 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
976 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
977 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
978 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
979 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path);
980 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
981 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
982 // -fmodules implies -fmodule-maps
983 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules);
984 Opts.ModuleCachePruneInterval =
985 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
986 Opts.ModuleCachePruneAfter =
987 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
988 Opts.ModulesValidateOncePerBuildSession =
989 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
990 Opts.BuildSessionTimestamp =
991 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
992 Opts.ModulesValidateSystemHeaders =
993 Args.hasArg(OPT_fmodules_validate_system_headers);
994
995 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro),
996 ie = Args.filtered_end();
997 it != ie; ++it) {
998 StringRef MacroDef = (*it)->getValue();
999 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first);
1000 }
1001 std::vector<std::string> ModuleMapFiles =
1002 Args.getAllArgValues(OPT_fmodule_map_file);
1003 Opts.ModuleMapFiles.insert(ModuleMapFiles.begin(), ModuleMapFiles.end());
1004
1005 // Add -I..., -F..., and -index-header-map options in order.
1006 bool IsIndexHeaderMap = false;
1007 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1008 OPT_index_header_map),
1009 ie = Args.filtered_end(); it != ie; ++it) {
1010 if ((*it)->getOption().matches(OPT_index_header_map)) {
1011 // -index-header-map applies to the next -I or -F.
1012 IsIndexHeaderMap = true;
1013 continue;
1014 }
1015
1016 frontend::IncludeDirGroup Group
1017 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1018
1019 Opts.AddPath((*it)->getValue(), Group,
1020 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1021 IsIndexHeaderMap = false;
1022 }
1023
1024 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1025 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1026 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1027 OPT_iwithprefixbefore),
1028 ie = Args.filtered_end(); it != ie; ++it) {
1029 const Arg *A = *it;
1030 if (A->getOption().matches(OPT_iprefix))
1031 Prefix = A->getValue();
1032 else if (A->getOption().matches(OPT_iwithprefix))
1033 Opts.AddPath(Prefix.str() + A->getValue(),
1034 frontend::After, false, true);
1035 else
1036 Opts.AddPath(Prefix.str() + A->getValue(),
1037 frontend::Angled, false, true);
1038 }
1039
1040 for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1041 ie = Args.filtered_end(); it != ie; ++it)
1042 Opts.AddPath((*it)->getValue(), frontend::After, false, true);
1043 for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1044 ie = Args.filtered_end(); it != ie; ++it)
1045 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true);
1046 for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1047 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1048 Opts.AddPath((*it)->getValue(), frontend::System, false,
1049 !(*it)->getOption().matches(OPT_iwithsysroot));
1050 for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1051 ie = Args.filtered_end(); it != ie; ++it)
1052 Opts.AddPath((*it)->getValue(), frontend::System, true, true);
1053
1054 // Add the paths for the various language specific isystem flags.
1055 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1056 ie = Args.filtered_end(); it != ie; ++it)
1057 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true);
1058 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1059 ie = Args.filtered_end(); it != ie; ++it)
1060 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true);
1061 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1062 ie = Args.filtered_end(); it != ie; ++it)
1063 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true);
1064 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1065 ie = Args.filtered_end(); it != ie; ++it)
1066 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true);
1067
1068 // Add the internal paths from a driver that detects standard include paths.
1069 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1070 OPT_internal_externc_isystem),
1071 E = Args.filtered_end();
1072 I != E; ++I) {
1073 frontend::IncludeDirGroup Group = frontend::System;
1074 if ((*I)->getOption().matches(OPT_internal_externc_isystem))
1075 Group = frontend::ExternCSystem;
1076 Opts.AddPath((*I)->getValue(), Group, false, true);
1077 }
1078
1079 // Add the path prefixes which are implicitly treated as being system headers.
1080 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix,
1081 OPT_no_system_header_prefix),
1082 E = Args.filtered_end();
1083 I != E; ++I)
1084 Opts.AddSystemHeaderPrefix(
1085 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix));
1086
1087 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay),
1088 E = Args.filtered_end(); I != E; ++I)
1089 Opts.AddVFSOverlayFile((*I)->getValue());
1090 }
1091
setLangDefaults(LangOptions & Opts,InputKind IK,LangStandard::Kind LangStd)1092 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1093 LangStandard::Kind LangStd) {
1094 // Set some properties which depend solely on the input kind; it would be nice
1095 // to move these to the language standard, and have the driver resolve the
1096 // input kind + language standard.
1097 if (IK == IK_Asm) {
1098 Opts.AsmPreprocessor = 1;
1099 } else if (IK == IK_ObjC ||
1100 IK == IK_ObjCXX ||
1101 IK == IK_PreprocessedObjC ||
1102 IK == IK_PreprocessedObjCXX) {
1103 Opts.ObjC1 = Opts.ObjC2 = 1;
1104 }
1105
1106 if (LangStd == LangStandard::lang_unspecified) {
1107 // Based on the base language, pick one.
1108 switch (IK) {
1109 case IK_None:
1110 case IK_AST:
1111 case IK_LLVM_IR:
1112 llvm_unreachable("Invalid input kind!");
1113 case IK_OpenCL:
1114 LangStd = LangStandard::lang_opencl;
1115 break;
1116 case IK_CUDA:
1117 LangStd = LangStandard::lang_cuda;
1118 break;
1119 case IK_Asm:
1120 case IK_C:
1121 case IK_PreprocessedC:
1122 case IK_ObjC:
1123 case IK_PreprocessedObjC:
1124 LangStd = LangStandard::lang_gnu99;
1125 break;
1126 case IK_CXX:
1127 case IK_PreprocessedCXX:
1128 case IK_ObjCXX:
1129 case IK_PreprocessedObjCXX:
1130 LangStd = LangStandard::lang_gnucxx98;
1131 break;
1132 }
1133 }
1134
1135 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1136 Opts.LineComment = Std.hasLineComments();
1137 Opts.C99 = Std.isC99();
1138 Opts.C11 = Std.isC11();
1139 Opts.CPlusPlus = Std.isCPlusPlus();
1140 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1141 Opts.CPlusPlus1y = Std.isCPlusPlus1y();
1142 Opts.CPlusPlus1z = Std.isCPlusPlus1z();
1143 Opts.Digraphs = Std.hasDigraphs();
1144 Opts.GNUMode = Std.isGNUMode();
1145 Opts.GNUInline = !Std.isC99();
1146 Opts.HexFloats = Std.hasHexFloats();
1147 Opts.ImplicitInt = Std.hasImplicitInt();
1148
1149 // Set OpenCL Version.
1150 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL;
1151 if (LangStd == LangStandard::lang_opencl)
1152 Opts.OpenCLVersion = 100;
1153 else if (LangStd == LangStandard::lang_opencl11)
1154 Opts.OpenCLVersion = 110;
1155 else if (LangStd == LangStandard::lang_opencl12)
1156 Opts.OpenCLVersion = 120;
1157
1158 // OpenCL has some additional defaults.
1159 if (Opts.OpenCL) {
1160 Opts.AltiVec = 0;
1161 Opts.CXXOperatorNames = 1;
1162 Opts.LaxVectorConversions = 0;
1163 Opts.DefaultFPContract = 1;
1164 Opts.NativeHalfType = 1;
1165 }
1166
1167 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA;
1168
1169 // OpenCL and C++ both have bool, true, false keywords.
1170 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1171
1172 // OpenCL has half keyword
1173 Opts.Half = Opts.OpenCL;
1174
1175 // C++ has wchar_t keyword.
1176 Opts.WChar = Opts.CPlusPlus;
1177
1178 Opts.GNUKeywords = Opts.GNUMode;
1179 Opts.CXXOperatorNames = Opts.CPlusPlus;
1180
1181 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1182 // is specified, or -std is set to a conforming mode.
1183 // Trigraphs are disabled by default in c++1z onwards.
1184 Opts.Trigraphs = !Opts.GNUMode && !Opts.CPlusPlus1z;
1185
1186 Opts.DollarIdents = !Opts.AsmPreprocessor;
1187
1188 // C++1y onwards has sized global deallocation functions.
1189 Opts.SizedDeallocation = Opts.CPlusPlus1y;
1190 }
1191
1192 /// Attempt to parse a visibility value out of the given argument.
parseVisibility(Arg * arg,ArgList & args,DiagnosticsEngine & diags)1193 static Visibility parseVisibility(Arg *arg, ArgList &args,
1194 DiagnosticsEngine &diags) {
1195 StringRef value = arg->getValue();
1196 if (value == "default") {
1197 return DefaultVisibility;
1198 } else if (value == "hidden") {
1199 return HiddenVisibility;
1200 } else if (value == "protected") {
1201 // FIXME: diagnose if target does not support protected visibility
1202 return ProtectedVisibility;
1203 }
1204
1205 diags.Report(diag::err_drv_invalid_value)
1206 << arg->getAsString(args) << value;
1207 return DefaultVisibility;
1208 }
1209
parseMSCVersion(ArgList & Args,DiagnosticsEngine & Diags)1210 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) {
1211 auto Arg = Args.getLastArg(OPT_fmsc_version);
1212 if (!Arg)
1213 return 0;
1214
1215 // The MSC versioning scheme involves four versioning components:
1216 // - Major
1217 // - Minor
1218 // - Build
1219 // - Patch
1220 //
1221 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value.
1222 // Additionally, the value may be provided in the form of a more readable
1223 // MM.mm.bbbbb.pp version.
1224 //
1225 // Unfortunately, due to the bit-width limitations, we cannot currently encode
1226 // the value for the patch level.
1227
1228 StringRef Value = Arg->getValue();
1229
1230 // parse the compatible old form of _MSC_VER or the newer _MSC_FULL_VER
1231 if (Value.find('.') == StringRef::npos) {
1232 unsigned Version = 0;
1233 if (Value.getAsInteger(10, Version)) {
1234 Diags.Report(diag::err_drv_invalid_value)
1235 << Arg->getAsString(Args) << Value;
1236 return 0;
1237 }
1238 if (Version < 100)
1239 Version = Version * 100; // major -> major.minor
1240 if (Version < 100000)
1241 Version = Version * 100000; // major.minor -> major.minor.build
1242 return Version;
1243 }
1244
1245 // parse the dot-delimited component version
1246 unsigned VC[4] = {0};
1247 SmallVector<StringRef, 4> Components;
1248
1249 Value.split(Components, ".", llvm::array_lengthof(VC));
1250 for (unsigned CI = 0,
1251 CE = std::min(Components.size(), llvm::array_lengthof(VC));
1252 CI < CE; ++CI) {
1253 if (Components[CI].getAsInteger(10, VC[CI])) {
1254 Diags.Report(diag::err_drv_invalid_value)
1255 << Arg->getAsString(Args) << Value;
1256 return 0;
1257 }
1258 }
1259
1260 // FIXME we cannot encode the patch level
1261 return VC[0] * 10000000 + VC[1] * 100000 + VC[2];
1262 }
1263
ParseLangArgs(LangOptions & Opts,ArgList & Args,InputKind IK,DiagnosticsEngine & Diags)1264 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1265 DiagnosticsEngine &Diags) {
1266 // FIXME: Cleanup per-file based stuff.
1267 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1268 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1269 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1270 #define LANGSTANDARD(id, name, desc, features) \
1271 .Case(name, LangStandard::lang_##id)
1272 #include "clang/Frontend/LangStandards.def"
1273 .Default(LangStandard::lang_unspecified);
1274 if (LangStd == LangStandard::lang_unspecified)
1275 Diags.Report(diag::err_drv_invalid_value)
1276 << A->getAsString(Args) << A->getValue();
1277 else {
1278 // Valid standard, check to make sure language and standard are
1279 // compatible.
1280 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1281 switch (IK) {
1282 case IK_C:
1283 case IK_ObjC:
1284 case IK_PreprocessedC:
1285 case IK_PreprocessedObjC:
1286 if (!(Std.isC89() || Std.isC99()))
1287 Diags.Report(diag::err_drv_argument_not_allowed_with)
1288 << A->getAsString(Args) << "C/ObjC";
1289 break;
1290 case IK_CXX:
1291 case IK_ObjCXX:
1292 case IK_PreprocessedCXX:
1293 case IK_PreprocessedObjCXX:
1294 if (!Std.isCPlusPlus())
1295 Diags.Report(diag::err_drv_argument_not_allowed_with)
1296 << A->getAsString(Args) << "C++/ObjC++";
1297 break;
1298 case IK_OpenCL:
1299 if (!Std.isC99())
1300 Diags.Report(diag::err_drv_argument_not_allowed_with)
1301 << A->getAsString(Args) << "OpenCL";
1302 break;
1303 case IK_CUDA:
1304 if (!Std.isCPlusPlus())
1305 Diags.Report(diag::err_drv_argument_not_allowed_with)
1306 << A->getAsString(Args) << "CUDA";
1307 break;
1308 default:
1309 break;
1310 }
1311 }
1312 }
1313
1314 // -cl-std only applies for OpenCL language standards.
1315 // Override the -std option in this case.
1316 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1317 LangStandard::Kind OpenCLLangStd
1318 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1319 .Case("CL", LangStandard::lang_opencl)
1320 .Case("CL1.1", LangStandard::lang_opencl11)
1321 .Case("CL1.2", LangStandard::lang_opencl12)
1322 .Default(LangStandard::lang_unspecified);
1323
1324 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1325 Diags.Report(diag::err_drv_invalid_value)
1326 << A->getAsString(Args) << A->getValue();
1327 }
1328 else
1329 LangStd = OpenCLLangStd;
1330 }
1331
1332 CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1333
1334 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1335 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1336 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1337 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1338 // name, as it doesn't seem a useful distinction.
1339 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1340 Opts.GNUKeywords);
1341
1342 if (Args.hasArg(OPT_fno_operator_names))
1343 Opts.CXXOperatorNames = 0;
1344
1345 if (Opts.ObjC1) {
1346 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1347 StringRef value = arg->getValue();
1348 if (Opts.ObjCRuntime.tryParse(value))
1349 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1350 }
1351
1352 if (Args.hasArg(OPT_fobjc_gc_only))
1353 Opts.setGC(LangOptions::GCOnly);
1354 else if (Args.hasArg(OPT_fobjc_gc))
1355 Opts.setGC(LangOptions::HybridGC);
1356 else if (Args.hasArg(OPT_fobjc_arc)) {
1357 Opts.ObjCAutoRefCount = 1;
1358 if (!Opts.ObjCRuntime.allowsARC())
1359 Diags.Report(diag::err_arc_unsupported_on_runtime);
1360
1361 // Only set ObjCARCWeak if ARC is enabled.
1362 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1363 Opts.ObjCARCWeak = 1;
1364 else
1365 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak();
1366 }
1367
1368 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1369 Opts.ObjCInferRelatedResultType = 0;
1370
1371 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
1372 Opts.ObjCSubscriptingLegacyRuntime =
1373 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
1374 }
1375
1376 if (Args.hasArg(OPT_fgnu89_inline))
1377 Opts.GNUInline = 1;
1378
1379 if (Args.hasArg(OPT_fapple_kext)) {
1380 if (!Opts.CPlusPlus)
1381 Diags.Report(diag::warn_c_kext);
1382 else
1383 Opts.AppleKext = 1;
1384 }
1385
1386 if (Args.hasArg(OPT_print_ivar_layout))
1387 Opts.ObjCGCBitmapPrint = 1;
1388 if (Args.hasArg(OPT_fno_constant_cfstrings))
1389 Opts.NoConstantCFStrings = 1;
1390
1391 if (Args.hasArg(OPT_faltivec))
1392 Opts.AltiVec = 1;
1393
1394 if (Args.hasArg(OPT_pthread))
1395 Opts.POSIXThreads = 1;
1396
1397 // The value-visibility mode defaults to "default".
1398 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
1399 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
1400 } else {
1401 Opts.setValueVisibilityMode(DefaultVisibility);
1402 }
1403
1404 // The type-visibility mode defaults to the value-visibility mode.
1405 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
1406 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
1407 } else {
1408 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
1409 }
1410
1411 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1412 Opts.InlineVisibilityHidden = 1;
1413
1414 if (Args.hasArg(OPT_ftrapv)) {
1415 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1416 // Set the handler, if one is specified.
1417 Opts.OverflowHandler =
1418 Args.getLastArgValue(OPT_ftrapv_handler);
1419 }
1420 else if (Args.hasArg(OPT_fwrapv))
1421 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1422
1423 if (Args.hasArg(OPT_trigraphs))
1424 Opts.Trigraphs = 1;
1425
1426 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1427 OPT_fno_dollars_in_identifiers,
1428 Opts.DollarIdents);
1429 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1430 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
1431 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
1432 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
1433 Opts.MSCVersion = parseMSCVersion(Args, Diags);
1434 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
1435 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1436 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1437 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1438 Opts.ConstStrings);
1439 if (Args.hasArg(OPT_fno_lax_vector_conversions))
1440 Opts.LaxVectorConversions = 0;
1441 if (Args.hasArg(OPT_fno_threadsafe_statics))
1442 Opts.ThreadsafeStatics = 0;
1443 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1444 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1445 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1446 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1447 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1448
1449 Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1450 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
1451 Opts.Blocks = Args.hasArg(OPT_fblocks);
1452 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1453 Opts.Modules = Args.hasArg(OPT_fmodules);
1454 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
1455 Opts.ModulesDeclUse =
1456 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
1457 Opts.ModulesSearchAll = Opts.Modules &&
1458 !Args.hasArg(OPT_fno_modules_search_all) &&
1459 Args.hasArg(OPT_fmodules_search_all);
1460 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
1461 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
1462 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
1463 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
1464 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1465 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1466 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1467 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
1468 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1469 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation);
1470 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1471 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1472 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1473 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
1474 Opts.InstantiationDepth =
1475 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags);
1476 Opts.ArrowDepth =
1477 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
1478 Opts.ConstexprCallDepth =
1479 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
1480 Opts.ConstexprStepLimit =
1481 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
1482 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
1483 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1484 Opts.NumLargeByValueCopy =
1485 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
1486 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1487 Opts.ObjCConstantStringClass =
1488 Args.getLastArgValue(OPT_fconstant_string_class);
1489 Opts.ObjCDefaultSynthProperties =
1490 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
1491 Opts.EncodeExtendedBlockSig =
1492 Args.hasArg(OPT_fencode_extended_block_signature);
1493 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1494 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
1495 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1496 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags);
1497 Opts.Static = Args.hasArg(OPT_static_define);
1498 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1499 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
1500 || Args.hasArg(OPT_fdump_record_layouts);
1501 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1502 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1503 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1504 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1505 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1506 Opts.MRTD = Args.hasArg(OPT_mrtd);
1507 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1508 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1509 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1510 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1511 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
1512 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
1513 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1514 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1515
1516 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
1517 switch (llvm::StringSwitch<unsigned>(A->getValue())
1518 .Case("target", LangOptions::ASMM_Target)
1519 .Case("no", LangOptions::ASMM_Off)
1520 .Case("yes", LangOptions::ASMM_On)
1521 .Default(255)) {
1522 default:
1523 Diags.Report(diag::err_drv_invalid_value)
1524 << "-faddress-space-map-mangling=" << A->getValue();
1525 break;
1526 case LangOptions::ASMM_Target:
1527 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
1528 break;
1529 case LangOptions::ASMM_On:
1530 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
1531 break;
1532 case LangOptions::ASMM_Off:
1533 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
1534 break;
1535 }
1536 }
1537
1538 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
1539 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
1540 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
1541 A->getValue())
1542 .Case("single",
1543 LangOptions::PPTMK_FullGeneralitySingleInheritance)
1544 .Case("multiple",
1545 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
1546 .Case("virtual",
1547 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
1548 .Default(LangOptions::PPTMK_BestCase);
1549 if (InheritanceModel == LangOptions::PPTMK_BestCase)
1550 Diags.Report(diag::err_drv_invalid_value)
1551 << "-fms-memptr-rep=" << A->getValue();
1552
1553 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
1554 }
1555
1556 // Check if -fopenmp= is specified.
1557 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) {
1558 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue())
1559 .Case("libiomp5", true)
1560 .Default(false);
1561 }
1562
1563 // Record whether the __DEPRECATED define was requested.
1564 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1565 OPT_fno_deprecated_macro,
1566 Opts.Deprecated);
1567
1568 // FIXME: Eliminate this dependency.
1569 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
1570 OptSize = getOptimizationLevelSize(Args);
1571 Opts.Optimize = Opt != 0;
1572 Opts.OptimizeSize = OptSize != 0;
1573
1574 // This is the __NO_INLINE__ define, which just depends on things like the
1575 // optimization level and -fno-inline, not actually whether the backend has
1576 // inlining enabled.
1577 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
1578
1579 Opts.FastMath = Args.hasArg(OPT_ffast_math);
1580 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only);
1581
1582 Opts.RetainCommentsFromSystemHeaders =
1583 Args.hasArg(OPT_fretain_comments_from_system_headers);
1584
1585 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1586 switch (SSP) {
1587 default:
1588 Diags.Report(diag::err_drv_invalid_value)
1589 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1590 break;
1591 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1592 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
1593 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
1594 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
1595 }
1596
1597 // Parse -fsanitize= arguments.
1598 std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ);
1599 for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) {
1600 // Since the Opts.Sanitize* values are bitfields, it's a little tricky to
1601 // efficiently map string values to them. Perform the mapping indirectly:
1602 // convert strings to enumerated values, then switch over the enum to set
1603 // the right bitfield value.
1604 enum Sanitizer {
1605 #define SANITIZER(NAME, ID) \
1606 ID,
1607 #include "clang/Basic/Sanitizers.def"
1608 Unknown
1609 };
1610 switch (llvm::StringSwitch<unsigned>(Sanitizers[I])
1611 #define SANITIZER(NAME, ID) \
1612 .Case(NAME, ID)
1613 #include "clang/Basic/Sanitizers.def"
1614 .Default(Unknown)) {
1615 #define SANITIZER(NAME, ID) \
1616 case ID: \
1617 Opts.Sanitize.ID = true; \
1618 break;
1619 #include "clang/Basic/Sanitizers.def"
1620
1621 case Unknown:
1622 Diags.Report(diag::err_drv_invalid_value)
1623 << "-fsanitize=" << Sanitizers[I];
1624 break;
1625 }
1626 }
1627 }
1628
ParsePreprocessorArgs(PreprocessorOptions & Opts,ArgList & Args,FileManager & FileMgr,DiagnosticsEngine & Diags)1629 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1630 FileManager &FileMgr,
1631 DiagnosticsEngine &Diags) {
1632 using namespace options;
1633 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1634 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1635 if (const Arg *A = Args.getLastArg(OPT_token_cache))
1636 Opts.TokenCache = A->getValue();
1637 else
1638 Opts.TokenCache = Opts.ImplicitPTHInclude;
1639 Opts.UsePredefines = !Args.hasArg(OPT_undef);
1640 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1641 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1642
1643 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1644 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1645 ie = Args.filtered_end(); it != ie; ++it) {
1646 const Arg *A = *it;
1647 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
1648 }
1649
1650 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1651 StringRef Value(A->getValue());
1652 size_t Comma = Value.find(',');
1653 unsigned Bytes = 0;
1654 unsigned EndOfLine = 0;
1655
1656 if (Comma == StringRef::npos ||
1657 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1658 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1659 Diags.Report(diag::err_drv_preamble_format);
1660 else {
1661 Opts.PrecompiledPreambleBytes.first = Bytes;
1662 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1663 }
1664 }
1665
1666 // Add macros from the command line.
1667 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1668 ie = Args.filtered_end(); it != ie; ++it) {
1669 if ((*it)->getOption().matches(OPT_D))
1670 Opts.addMacroDef((*it)->getValue());
1671 else
1672 Opts.addMacroUndef((*it)->getValue());
1673 }
1674
1675 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1676
1677 // Add the ordered list of -includes.
1678 for (arg_iterator it = Args.filtered_begin(OPT_include),
1679 ie = Args.filtered_end(); it != ie; ++it) {
1680 const Arg *A = *it;
1681 Opts.Includes.push_back(A->getValue());
1682 }
1683
1684 for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1685 ie = Args.filtered_end(); it != ie; ++it) {
1686 const Arg *A = *it;
1687 Opts.ChainedIncludes.push_back(A->getValue());
1688 }
1689
1690 // Include 'altivec.h' if -faltivec option present
1691 if (Args.hasArg(OPT_faltivec))
1692 Opts.Includes.push_back("altivec.h");
1693
1694 for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1695 ie = Args.filtered_end(); it != ie; ++it) {
1696 const Arg *A = *it;
1697 std::pair<StringRef,StringRef> Split =
1698 StringRef(A->getValue()).split(';');
1699
1700 if (Split.second.empty()) {
1701 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1702 continue;
1703 }
1704
1705 Opts.addRemappedFile(Split.first, Split.second);
1706 }
1707
1708 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1709 StringRef Name = A->getValue();
1710 unsigned Library = llvm::StringSwitch<unsigned>(Name)
1711 .Case("libc++", ARCXX_libcxx)
1712 .Case("libstdc++", ARCXX_libstdcxx)
1713 .Case("none", ARCXX_nolib)
1714 .Default(~0U);
1715 if (Library == ~0U)
1716 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1717 else
1718 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1719 }
1720 }
1721
ParsePreprocessorOutputArgs(PreprocessorOutputOptions & Opts,ArgList & Args,frontend::ActionKind Action)1722 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1723 ArgList &Args,
1724 frontend::ActionKind Action) {
1725 using namespace options;
1726
1727 switch (Action) {
1728 case frontend::ASTDeclList:
1729 case frontend::ASTDump:
1730 case frontend::ASTPrint:
1731 case frontend::ASTView:
1732 case frontend::EmitAssembly:
1733 case frontend::EmitBC:
1734 case frontend::EmitHTML:
1735 case frontend::EmitLLVM:
1736 case frontend::EmitLLVMOnly:
1737 case frontend::EmitCodeGenOnly:
1738 case frontend::EmitObj:
1739 case frontend::FixIt:
1740 case frontend::GenerateModule:
1741 case frontend::GeneratePCH:
1742 case frontend::GeneratePTH:
1743 case frontend::ParseSyntaxOnly:
1744 case frontend::ModuleFileInfo:
1745 case frontend::VerifyPCH:
1746 case frontend::PluginAction:
1747 case frontend::PrintDeclContext:
1748 case frontend::RewriteObjC:
1749 case frontend::RewriteTest:
1750 case frontend::RunAnalysis:
1751 case frontend::MigrateSource:
1752 Opts.ShowCPP = 0;
1753 break;
1754
1755 case frontend::DumpRawTokens:
1756 case frontend::DumpTokens:
1757 case frontend::InitOnly:
1758 case frontend::PrintPreamble:
1759 case frontend::PrintPreprocessedInput:
1760 case frontend::RewriteMacros:
1761 case frontend::RunPreprocessorOnly:
1762 Opts.ShowCPP = !Args.hasArg(OPT_dM);
1763 break;
1764 }
1765
1766 Opts.ShowComments = Args.hasArg(OPT_C);
1767 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1768 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1769 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1770 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
1771 }
1772
ParseTargetArgs(TargetOptions & Opts,ArgList & Args)1773 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1774 using namespace options;
1775 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1776 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1777 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
1778 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
1779 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1780 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1781
1782 // Use the default target triple if unspecified.
1783 if (Opts.Triple.empty())
1784 Opts.Triple = llvm::sys::getDefaultTargetTriple();
1785 }
1786
CreateFromArgs(CompilerInvocation & Res,const char * const * ArgBegin,const char * const * ArgEnd,DiagnosticsEngine & Diags)1787 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1788 const char *const *ArgBegin,
1789 const char *const *ArgEnd,
1790 DiagnosticsEngine &Diags) {
1791 bool Success = true;
1792
1793 // Parse the arguments.
1794 std::unique_ptr<OptTable> Opts(createDriverOptTable());
1795 const unsigned IncludedFlagsBitmask = options::CC1Option;
1796 unsigned MissingArgIndex, MissingArgCount;
1797 std::unique_ptr<InputArgList> Args(
1798 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount,
1799 IncludedFlagsBitmask));
1800
1801 // Check for missing argument error.
1802 if (MissingArgCount) {
1803 Diags.Report(diag::err_drv_missing_argument)
1804 << Args->getArgString(MissingArgIndex) << MissingArgCount;
1805 Success = false;
1806 }
1807
1808 // Issue errors on unknown arguments.
1809 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1810 ie = Args->filtered_end(); it != ie; ++it) {
1811 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1812 Success = false;
1813 }
1814
1815 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success;
1816 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
1817 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1818 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
1819 && Success;
1820 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args);
1821 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1822 // FIXME: We shouldn't have to pass the DashX option around here
1823 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1824 ParseTargetArgs(Res.getTargetOpts(), *Args);
1825 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags,
1826 Res.getTargetOpts()) && Success;
1827 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1828 if (DashX != IK_AST && DashX != IK_LLVM_IR) {
1829 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
1830 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
1831 Res.getLangOpts()->ObjCExceptions = 1;
1832 }
1833 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1834 // PCH file and find the original header name. Remove the need to do that in
1835 // ParsePreprocessorArgs and remove the FileManager
1836 // parameters from the function and the "FileManager.h" #include.
1837 FileManager FileMgr(Res.getFileSystemOpts());
1838 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1839 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args,
1840 Res.getFrontendOpts().ProgramAction);
1841 return Success;
1842 }
1843
1844 namespace {
1845
1846 class ModuleSignature {
1847 SmallVector<uint64_t, 16> Data;
1848 unsigned CurBit;
1849 uint64_t CurValue;
1850
1851 public:
ModuleSignature()1852 ModuleSignature() : CurBit(0), CurValue(0) { }
1853
1854 void add(uint64_t Value, unsigned Bits);
1855 void add(StringRef Value);
1856 void flush();
1857
1858 llvm::APInt getAsInteger() const;
1859 };
1860 }
1861
add(uint64_t Value,unsigned int NumBits)1862 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
1863 CurValue |= Value << CurBit;
1864 if (CurBit + NumBits < 64) {
1865 CurBit += NumBits;
1866 return;
1867 }
1868
1869 // Add the current word.
1870 Data.push_back(CurValue);
1871
1872 if (CurBit)
1873 CurValue = Value >> (64-CurBit);
1874 else
1875 CurValue = 0;
1876 CurBit = (CurBit+NumBits) & 63;
1877 }
1878
flush()1879 void ModuleSignature::flush() {
1880 if (CurBit == 0)
1881 return;
1882
1883 Data.push_back(CurValue);
1884 CurBit = 0;
1885 CurValue = 0;
1886 }
1887
add(StringRef Value)1888 void ModuleSignature::add(StringRef Value) {
1889 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
1890 add(*I, 8);
1891 }
1892
getAsInteger() const1893 llvm::APInt ModuleSignature::getAsInteger() const {
1894 return llvm::APInt(Data.size() * 64, Data);
1895 }
1896
getModuleHash() const1897 std::string CompilerInvocation::getModuleHash() const {
1898 // Note: For QoI reasons, the things we use as a hash here should all be
1899 // dumped via the -module-info flag.
1900 using llvm::hash_code;
1901 using llvm::hash_value;
1902 using llvm::hash_combine;
1903
1904 // Start the signature with the compiler version.
1905 // FIXME: We'd rather use something more cryptographically sound than
1906 // CityHash, but this will do for now.
1907 hash_code code = hash_value(getClangFullRepositoryVersion());
1908
1909 // Extend the signature with the language options
1910 #define LANGOPT(Name, Bits, Default, Description) \
1911 code = hash_combine(code, LangOpts->Name);
1912 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1913 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
1914 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
1915 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
1916 #include "clang/Basic/LangOptions.def"
1917
1918 // Extend the signature with the target options.
1919 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
1920 TargetOpts->ABI);
1921 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
1922 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
1923
1924 // Extend the signature with preprocessor options.
1925 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
1926 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
1927 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
1928
1929 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
1930 I = getPreprocessorOpts().Macros.begin(),
1931 IEnd = getPreprocessorOpts().Macros.end();
1932 I != IEnd; ++I) {
1933 // If we're supposed to ignore this macro for the purposes of modules,
1934 // don't put it into the hash.
1935 if (!hsOpts.ModulesIgnoreMacros.empty()) {
1936 // Check whether we're ignoring this macro.
1937 StringRef MacroDef = I->first;
1938 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first))
1939 continue;
1940 }
1941
1942 code = hash_combine(code, I->first, I->second);
1943 }
1944
1945 // Extend the signature with the sysroot.
1946 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes,
1947 hsOpts.UseStandardSystemIncludes,
1948 hsOpts.UseStandardCXXIncludes,
1949 hsOpts.UseLibcxx);
1950 code = hash_combine(code, hsOpts.ResourceDir);
1951
1952 // Extend the signature with the user build path.
1953 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
1954
1955 // Darwin-specific hack: if we have a sysroot, use the contents and
1956 // modification time of
1957 // $sysroot/System/Library/CoreServices/SystemVersion.plist
1958 // as part of the module hash.
1959 if (!hsOpts.Sysroot.empty()) {
1960 SmallString<128> systemVersionFile;
1961 systemVersionFile += hsOpts.Sysroot;
1962 llvm::sys::path::append(systemVersionFile, "System");
1963 llvm::sys::path::append(systemVersionFile, "Library");
1964 llvm::sys::path::append(systemVersionFile, "CoreServices");
1965 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist");
1966
1967 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer =
1968 llvm::MemoryBuffer::getFile(systemVersionFile.str());
1969 if (buffer) {
1970 code = hash_combine(code, buffer.get()->getBuffer());
1971
1972 struct stat statBuf;
1973 if (stat(systemVersionFile.c_str(), &statBuf) == 0)
1974 code = hash_combine(code, statBuf.st_mtime);
1975 }
1976 }
1977
1978 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
1979 }
1980
1981 namespace clang {
1982
1983 template<typename IntTy>
getLastArgIntValueImpl(const ArgList & Args,OptSpecifier Id,IntTy Default,DiagnosticsEngine * Diags)1984 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
1985 IntTy Default,
1986 DiagnosticsEngine *Diags) {
1987 IntTy Res = Default;
1988 if (Arg *A = Args.getLastArg(Id)) {
1989 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
1990 if (Diags)
1991 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
1992 << A->getValue();
1993 }
1994 }
1995 return Res;
1996 }
1997
1998
1999 // Declared in clang/Frontend/Utils.h.
getLastArgIntValue(const ArgList & Args,OptSpecifier Id,int Default,DiagnosticsEngine * Diags)2000 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
2001 DiagnosticsEngine *Diags) {
2002 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
2003 }
2004
getLastArgUInt64Value(const ArgList & Args,OptSpecifier Id,uint64_t Default,DiagnosticsEngine * Diags)2005 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
2006 uint64_t Default,
2007 DiagnosticsEngine *Diags) {
2008 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
2009 }
2010
BuryPointer(const void * Ptr)2011 void BuryPointer(const void *Ptr) {
2012 // This function may be called only a small fixed amount of times per each
2013 // invocation, otherwise we do actually have a leak which we want to report.
2014 // If this function is called more than kGraveYardMaxSize times, the pointers
2015 // will not be properly buried and a leak detector will report a leak, which
2016 // is what we want in such case.
2017 static const size_t kGraveYardMaxSize = 16;
2018 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2019 static std::atomic<unsigned> GraveYardSize;
2020 unsigned Idx = GraveYardSize++;
2021 if (Idx >= kGraveYardMaxSize)
2022 return;
2023 GraveYard[Idx] = Ptr;
2024 }
2025
2026 IntrusiveRefCntPtr<vfs::FileSystem>
createVFSFromCompilerInvocation(const CompilerInvocation & CI,DiagnosticsEngine & Diags)2027 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2028 DiagnosticsEngine &Diags) {
2029 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2030 return vfs::getRealFileSystem();
2031
2032 IntrusiveRefCntPtr<vfs::OverlayFileSystem>
2033 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem()));
2034 // earlier vfs files are on the bottom
2035 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2036 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2037 llvm::MemoryBuffer::getFile(File);
2038 if (!Buffer) {
2039 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2040 return IntrusiveRefCntPtr<vfs::FileSystem>();
2041 }
2042
2043 IntrusiveRefCntPtr<vfs::FileSystem> FS =
2044 vfs::getVFSFromYAML(Buffer->release(), /*DiagHandler*/ nullptr);
2045 if (!FS.get()) {
2046 Diags.Report(diag::err_invalid_vfs_overlay) << File;
2047 return IntrusiveRefCntPtr<vfs::FileSystem>();
2048 }
2049 Overlay->pushOverlay(FS);
2050 }
2051 return Overlay;
2052 }
2053 } // end namespace clang
2054