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/Config/config.h"
14 #include "clang/Driver/DriverDiagnostic.h"
15 #include "clang/Driver/Options.h"
16 #include "clang/Driver/Util.h"
17 #include "clang/Frontend/FrontendDiagnostic.h"
18 #include "clang/Frontend/LangStandard.h"
19 #include "clang/Frontend/Utils.h"
20 #include "clang/Lex/HeaderSearchOptions.h"
21 #include "clang/Serialization/ASTReader.h"
22 #include "llvm/ADT/Hashing.h"
23 #include "llvm/ADT/STLExtras.h"
24 #include "llvm/ADT/SmallVector.h"
25 #include "llvm/ADT/StringExtras.h"
26 #include "llvm/ADT/StringSwitch.h"
27 #include "llvm/ADT/Triple.h"
28 #include "llvm/Option/Arg.h"
29 #include "llvm/Option/ArgList.h"
30 #include "llvm/Option/OptTable.h"
31 #include "llvm/Option/Option.h"
32 #include "llvm/Support/CodeGen.h"
33 #include "llvm/Support/ErrorHandling.h"
34 #include "llvm/Support/FileSystem.h"
35 #include "llvm/Support/Host.h"
36 #include "llvm/Support/Path.h"
37 #include "llvm/Support/Process.h"
38 #if !defined(_LIBCPP_HAS_NO_THREADS) && defined(__minix)
39 #include <atomic>
40 #endif // !defined(_LIBCPP_HAS_NO_THREADS) && defined(__minix)
41 #include <memory>
42 #include <sys/stat.h>
43 #include <system_error>
44 using namespace clang;
45
46 //===----------------------------------------------------------------------===//
47 // Initialization.
48 //===----------------------------------------------------------------------===//
49
CompilerInvocationBase()50 CompilerInvocationBase::CompilerInvocationBase()
51 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
52 DiagnosticOpts(new DiagnosticOptions()),
53 HeaderSearchOpts(new HeaderSearchOptions()),
54 PreprocessorOpts(new PreprocessorOptions()) {}
55
CompilerInvocationBase(const CompilerInvocationBase & X)56 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
57 : RefCountedBase<CompilerInvocation>(),
58 LangOpts(new LangOptions(*X.getLangOpts())),
59 TargetOpts(new TargetOptions(X.getTargetOpts())),
60 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
61 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
62 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
63
~CompilerInvocationBase()64 CompilerInvocationBase::~CompilerInvocationBase() {}
65
66 //===----------------------------------------------------------------------===//
67 // Deserialization (from args)
68 //===----------------------------------------------------------------------===//
69
70 using namespace clang::driver;
71 using namespace clang::driver::options;
72 using namespace llvm::opt;
73
74 //
75
getOptimizationLevel(ArgList & Args,InputKind IK,DiagnosticsEngine & Diags)76 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
77 DiagnosticsEngine &Diags) {
78 unsigned DefaultOpt = 0;
79 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
80 DefaultOpt = 2;
81
82 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
83 if (A->getOption().matches(options::OPT_O0))
84 return 0;
85
86 if (A->getOption().matches(options::OPT_Ofast))
87 return 3;
88
89 assert (A->getOption().matches(options::OPT_O));
90
91 StringRef S(A->getValue());
92 if (S == "s" || S == "z" || S.empty())
93 return 2;
94
95 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
96 }
97
98 return DefaultOpt;
99 }
100
getOptimizationLevelSize(ArgList & Args)101 static unsigned getOptimizationLevelSize(ArgList &Args) {
102 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
103 if (A->getOption().matches(options::OPT_O)) {
104 switch (A->getValue()[0]) {
105 default:
106 return 0;
107 case 's':
108 return 1;
109 case 'z':
110 return 2;
111 }
112 }
113 }
114 return 0;
115 }
116
addDiagnosticArgs(ArgList & Args,OptSpecifier Group,OptSpecifier GroupWithValue,std::vector<std::string> & Diagnostics)117 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
118 OptSpecifier GroupWithValue,
119 std::vector<std::string> &Diagnostics) {
120 for (Arg *A : Args.filtered(Group)) {
121 if (A->getOption().getKind() == Option::FlagClass) {
122 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
123 // its name (minus the "W" or "R" at the beginning) to the warning list.
124 Diagnostics.push_back(A->getOption().getName().drop_front(1));
125 } else if (A->getOption().matches(GroupWithValue)) {
126 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group.
127 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-"));
128 } else {
129 // Otherwise, add its value (for OPT_W_Joined and similar).
130 for (const char *Arg : A->getValues())
131 Diagnostics.push_back(Arg);
132 }
133 }
134 }
135
ParseAnalyzerArgs(AnalyzerOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags)136 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
137 DiagnosticsEngine &Diags) {
138 using namespace options;
139 bool Success = true;
140 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
141 StringRef Name = A->getValue();
142 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
143 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
144 .Case(CMDFLAG, NAME##Model)
145 #include "clang/StaticAnalyzer/Core/Analyses.def"
146 .Default(NumStores);
147 if (Value == NumStores) {
148 Diags.Report(diag::err_drv_invalid_value)
149 << A->getAsString(Args) << Name;
150 Success = false;
151 } else {
152 Opts.AnalysisStoreOpt = Value;
153 }
154 }
155
156 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
157 StringRef Name = A->getValue();
158 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
159 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
160 .Case(CMDFLAG, NAME##Model)
161 #include "clang/StaticAnalyzer/Core/Analyses.def"
162 .Default(NumConstraints);
163 if (Value == NumConstraints) {
164 Diags.Report(diag::err_drv_invalid_value)
165 << A->getAsString(Args) << Name;
166 Success = false;
167 } else {
168 Opts.AnalysisConstraintsOpt = Value;
169 }
170 }
171
172 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
173 StringRef Name = A->getValue();
174 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
175 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
176 .Case(CMDFLAG, PD_##NAME)
177 #include "clang/StaticAnalyzer/Core/Analyses.def"
178 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
179 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
180 Diags.Report(diag::err_drv_invalid_value)
181 << A->getAsString(Args) << Name;
182 Success = false;
183 } else {
184 Opts.AnalysisDiagOpt = Value;
185 }
186 }
187
188 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
189 StringRef Name = A->getValue();
190 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
191 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
192 .Case(CMDFLAG, NAME)
193 #include "clang/StaticAnalyzer/Core/Analyses.def"
194 .Default(NumPurgeModes);
195 if (Value == NumPurgeModes) {
196 Diags.Report(diag::err_drv_invalid_value)
197 << A->getAsString(Args) << Name;
198 Success = false;
199 } else {
200 Opts.AnalysisPurgeOpt = Value;
201 }
202 }
203
204 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
205 StringRef Name = A->getValue();
206 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
207 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
208 .Case(CMDFLAG, NAME)
209 #include "clang/StaticAnalyzer/Core/Analyses.def"
210 .Default(NumInliningModes);
211 if (Value == NumInliningModes) {
212 Diags.Report(diag::err_drv_invalid_value)
213 << A->getAsString(Args) << Name;
214 Success = false;
215 } else {
216 Opts.InliningMode = Value;
217 }
218 }
219
220 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
221 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks);
222
223 Opts.visualizeExplodedGraphWithGraphViz =
224 Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
225 Opts.visualizeExplodedGraphWithUbiGraph =
226 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
227 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
228 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
229 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
230 Opts.AnalyzeNestedBlocks =
231 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
232 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume);
233 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
234 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
235 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
236 Opts.maxBlockVisitOnPath =
237 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags);
238 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
239 Opts.InlineMaxStackDepth =
240 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth,
241 Opts.InlineMaxStackDepth, Diags);
242
243 Opts.CheckersControlList.clear();
244 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
245 OPT_analyzer_disable_checker),
246 ie = Args.filtered_end(); it != ie; ++it) {
247 const Arg *A = *it;
248 A->claim();
249 bool enable = (A->getOption().getID() == OPT_analyzer_checker);
250 // We can have a list of comma separated checker names, e.g:
251 // '-analyzer-checker=cocoa,unix'
252 StringRef checkerList = A->getValue();
253 SmallVector<StringRef, 4> checkers;
254 checkerList.split(checkers, ",");
255 for (unsigned i = 0, e = checkers.size(); i != e; ++i)
256 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
257 }
258
259 // Go through the analyzer configuration options.
260 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config),
261 ie = Args.filtered_end(); it != ie; ++it) {
262 const Arg *A = *it;
263 A->claim();
264 // We can have a list of comma separated config names, e.g:
265 // '-analyzer-config key1=val1,key2=val2'
266 StringRef configList = A->getValue();
267 SmallVector<StringRef, 4> configVals;
268 configList.split(configVals, ",");
269 for (unsigned i = 0, e = configVals.size(); i != e; ++i) {
270 StringRef key, val;
271 std::tie(key, val) = configVals[i].split("=");
272 if (val.empty()) {
273 Diags.Report(SourceLocation(),
274 diag::err_analyzer_config_no_value) << configVals[i];
275 Success = false;
276 break;
277 }
278 if (val.find('=') != StringRef::npos) {
279 Diags.Report(SourceLocation(),
280 diag::err_analyzer_config_multiple_values)
281 << configVals[i];
282 Success = false;
283 break;
284 }
285 Opts.Config[key] = val;
286 }
287 }
288
289 return Success;
290 }
291
ParseMigratorArgs(MigratorOptions & Opts,ArgList & Args)292 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
293 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
294 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
295 return true;
296 }
297
ParseCommentArgs(CommentOptions & Opts,ArgList & Args)298 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
299 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
300 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments);
301 }
302
getCodeModel(ArgList & Args,DiagnosticsEngine & Diags)303 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) {
304 if (Arg *A = Args.getLastArg(OPT_mcode_model)) {
305 StringRef Value = A->getValue();
306 if (Value == "small" || Value == "kernel" || Value == "medium" ||
307 Value == "large")
308 return Value;
309 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
310 }
311 return "default";
312 }
313
314 /// \brief Create a new Regex instance out of the string value in \p RpassArg.
315 /// It returns a pointer to the newly generated Regex instance.
316 static std::shared_ptr<llvm::Regex>
GenerateOptimizationRemarkRegex(DiagnosticsEngine & Diags,ArgList & Args,Arg * RpassArg)317 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args,
318 Arg *RpassArg) {
319 StringRef Val = RpassArg->getValue();
320 std::string RegexError;
321 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
322 if (!Pattern->isValid(RegexError)) {
323 Diags.Report(diag::err_drv_optimization_remark_pattern)
324 << RegexError << RpassArg->getAsString(Args);
325 Pattern.reset();
326 }
327 return Pattern;
328 }
329
parseSanitizerKinds(StringRef FlagName,const std::vector<std::string> & Sanitizers,DiagnosticsEngine & Diags,SanitizerSet & S)330 static void parseSanitizerKinds(StringRef FlagName,
331 const std::vector<std::string> &Sanitizers,
332 DiagnosticsEngine &Diags, SanitizerSet &S) {
333 for (const auto &Sanitizer : Sanitizers) {
334 SanitizerKind K = llvm::StringSwitch<SanitizerKind>(Sanitizer)
335 #define SANITIZER(NAME, ID) .Case(NAME, SanitizerKind::ID)
336 #include "clang/Basic/Sanitizers.def"
337 .Default(SanitizerKind::Unknown);
338 if (K == SanitizerKind::Unknown)
339 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
340 else
341 S.set(K, true);
342 }
343 }
344
ParseCodeGenArgs(CodeGenOptions & Opts,ArgList & Args,InputKind IK,DiagnosticsEngine & Diags,const TargetOptions & TargetOpts)345 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
346 DiagnosticsEngine &Diags,
347 const TargetOptions &TargetOpts) {
348 using namespace options;
349 bool Success = true;
350
351 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
352 // TODO: This could be done in Driver
353 unsigned MaxOptLevel = 3;
354 if (OptimizationLevel > MaxOptLevel) {
355 // If the optimization level is not supported, fall back on the default
356 // optimization
357 Diags.Report(diag::warn_drv_optimization_value)
358 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
359 OptimizationLevel = MaxOptLevel;
360 }
361 Opts.OptimizationLevel = OptimizationLevel;
362
363 // We must always run at least the always inlining pass.
364 Opts.setInlining(
365 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
366 : CodeGenOptions::OnlyAlwaysInlining);
367 // -fno-inline-functions overrides OptimizationLevel > 1.
368 Opts.NoInline = Args.hasArg(OPT_fno_inline);
369 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ?
370 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining());
371
372 if (Args.hasArg(OPT_gline_tables_only)) {
373 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly);
374 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) ||
375 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) {
376 bool Default = false;
377 // Until dtrace (via CTF) and LLDB can deal with distributed debug info,
378 // Darwin and FreeBSD default to standalone/full debug info.
379 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() ||
380 llvm::Triple(TargetOpts.Triple).isOSFreeBSD())
381 Default = true;
382
383 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default))
384 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo);
385 else
386 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo);
387 }
388 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
389 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
390 if (Args.hasArg(OPT_gdwarf_2))
391 Opts.DwarfVersion = 2;
392 else if (Args.hasArg(OPT_gdwarf_3))
393 Opts.DwarfVersion = 3;
394 else if (Args.hasArg(OPT_gdwarf_4))
395 Opts.DwarfVersion = 4;
396 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo)
397 // Default Dwarf version is 4 if we are generating debug information.
398 Opts.DwarfVersion = 4;
399
400 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
401 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
402 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
403 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
404 OPT_fuse_register_sized_bitfield_access);
405 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
406 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
407 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
408 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
409 Opts.NoCommon = Args.hasArg(OPT_fno_common);
410 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
411 Opts.OptimizeSize = getOptimizationLevelSize(Args);
412 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
413 Args.hasArg(OPT_ffreestanding));
414 Opts.UnrollLoops =
415 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
416 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize));
417 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
418
419 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
420 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
421 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
422 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate);
423 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ);
424 Opts.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping);
425 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
426 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
427 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
428 Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
429 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
430 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
431 Opts.CodeModel = getCodeModel(Args, Diags);
432 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
433 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
434 Opts.DisableFree = Args.hasArg(OPT_disable_free);
435 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
436 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
437 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
438 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
439 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
440 Args.hasArg(OPT_cl_finite_math_only) ||
441 Args.hasArg(OPT_cl_fast_relaxed_math));
442 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
443 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
444 Args.hasArg(OPT_cl_finite_math_only) ||
445 Args.hasArg(OPT_cl_fast_relaxed_math));
446 Opts.NoSignedZeros = Args.hasArg(OPT_cl_no_signed_zeros);
447 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
448 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
449 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
450 Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
451 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
452 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
453 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
454 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
455 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
456 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
457 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
458 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
459 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
460 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
461 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
462 Args.hasArg(OPT_cl_fast_relaxed_math);
463 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
464 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
465 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
466 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
467 Diags.Report(diag::err_drv_invalid_value)
468 << Args.getLastArg(OPT_mthread_model)->getAsString(Args)
469 << Opts.ThreadModel;
470 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
471 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
472
473 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
474 OPT_fno_function_sections, false);
475 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
476 OPT_fno_data_sections, false);
477 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
478
479 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
480 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
481 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
482
483 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
484 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
485
486 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
487 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
488 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
489 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
490 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
491 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
492 Opts.CoverageNoFunctionNamesInData =
493 Args.hasArg(OPT_coverage_no_function_names_in_data);
494 if (Args.hasArg(OPT_coverage_version_EQ)) {
495 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
496 if (CoverageVersion.size() != 4) {
497 Diags.Report(diag::err_drv_invalid_value)
498 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
499 << CoverageVersion;
500 } else {
501 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
502 }
503 }
504 }
505
506 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
507 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
508 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
509 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
510 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
511 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
512 Opts.SanitizeCoverage =
513 getLastArgIntValue(Args, OPT_fsanitize_coverage, 0, Diags);
514 Opts.SanitizeMemoryTrackOrigins =
515 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
516 Opts.SanitizeUndefinedTrapOnError =
517 Args.hasArg(OPT_fsanitize_undefined_trap_on_error);
518 Opts.SSPBufferSize =
519 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
520 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
521 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
522 StringRef Val = A->getValue();
523 unsigned StackAlignment = Opts.StackAlignment;
524 Val.getAsInteger(10, StackAlignment);
525 Opts.StackAlignment = StackAlignment;
526 }
527
528 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
529 StringRef Name = A->getValue();
530 unsigned Method = llvm::StringSwitch<unsigned>(Name)
531 .Case("legacy", CodeGenOptions::Legacy)
532 .Case("non-legacy", CodeGenOptions::NonLegacy)
533 .Case("mixed", CodeGenOptions::Mixed)
534 .Default(~0U);
535 if (Method == ~0U) {
536 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
537 Success = false;
538 } else {
539 Opts.setObjCDispatchMethod(
540 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
541 }
542 }
543
544 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
545 StringRef Name = A->getValue();
546 unsigned Model = llvm::StringSwitch<unsigned>(Name)
547 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
548 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
549 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
550 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
551 .Default(~0U);
552 if (Model == ~0U) {
553 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
554 Success = false;
555 } else {
556 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
557 }
558 }
559
560 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
561 StringRef Val = A->getValue();
562 if (Val == "fast")
563 Opts.setFPContractMode(CodeGenOptions::FPC_Fast);
564 else if (Val == "on")
565 Opts.setFPContractMode(CodeGenOptions::FPC_On);
566 else if (Val == "off")
567 Opts.setFPContractMode(CodeGenOptions::FPC_Off);
568 else
569 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
570 }
571
572 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
573 if (A->getOption().matches(OPT_fpcc_struct_return)) {
574 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
575 } else {
576 assert(A->getOption().matches(OPT_freg_struct_return));
577 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
578 }
579 }
580
581 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
582 bool NeedLocTracking = false;
583
584 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
585 Opts.OptimizationRemarkPattern =
586 GenerateOptimizationRemarkRegex(Diags, Args, A);
587 NeedLocTracking = true;
588 }
589
590 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
591 Opts.OptimizationRemarkMissedPattern =
592 GenerateOptimizationRemarkRegex(Diags, Args, A);
593 NeedLocTracking = true;
594 }
595
596 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
597 Opts.OptimizationRemarkAnalysisPattern =
598 GenerateOptimizationRemarkRegex(Diags, Args, A);
599 NeedLocTracking = true;
600 }
601
602 // If the user requested to use a sample profile for PGO, then the
603 // backend will need to track source location information so the profile
604 // can be incorporated into the IR.
605 if (!Opts.SampleProfileFile.empty())
606 NeedLocTracking = true;
607
608 // If the user requested a flag that requires source locations available in
609 // the backend, make sure that the backend tracks source location information.
610 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo)
611 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly);
612
613 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
614
615 // Parse -fsanitize-recover= arguments.
616 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
617 parseSanitizerKinds("-fsanitize-recover=",
618 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
619 Opts.SanitizeRecover);
620
621 return Success;
622 }
623
ParseDependencyOutputArgs(DependencyOutputOptions & Opts,ArgList & Args)624 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
625 ArgList &Args) {
626 using namespace options;
627 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
628 Opts.Targets = Args.getAllArgValues(OPT_MT);
629 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
630 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
631 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
632 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
633 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
634 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
635 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
636 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
637 Opts.ModuleDependencyOutputDir =
638 Args.getLastArgValue(OPT_module_dependency_dir);
639 }
640
ParseDiagnosticArgs(DiagnosticOptions & Opts,ArgList & Args,DiagnosticsEngine * Diags)641 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
642 DiagnosticsEngine *Diags) {
643 using namespace options;
644 bool Success = true;
645
646 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
647 if (Arg *A =
648 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
649 Opts.DiagnosticSerializationFile = A->getValue();
650 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
651 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
652 Opts.Pedantic = Args.hasArg(OPT_pedantic);
653 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
654 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
655 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
656 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
657 OPT_fno_show_column,
658 /*Default=*/true);
659 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
660 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
661 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
662
663 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
664
665 // Default behavior is to not to show note include stacks.
666 Opts.ShowNoteIncludeStack = false;
667 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
668 OPT_fno_diagnostics_show_note_include_stack))
669 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
670 Opts.ShowNoteIncludeStack = true;
671
672 StringRef ShowOverloads =
673 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
674 if (ShowOverloads == "best")
675 Opts.setShowOverloads(Ovl_Best);
676 else if (ShowOverloads == "all")
677 Opts.setShowOverloads(Ovl_All);
678 else {
679 Success = false;
680 if (Diags)
681 Diags->Report(diag::err_drv_invalid_value)
682 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
683 << ShowOverloads;
684 }
685
686 StringRef ShowCategory =
687 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
688 if (ShowCategory == "none")
689 Opts.ShowCategories = 0;
690 else if (ShowCategory == "id")
691 Opts.ShowCategories = 1;
692 else if (ShowCategory == "name")
693 Opts.ShowCategories = 2;
694 else {
695 Success = false;
696 if (Diags)
697 Diags->Report(diag::err_drv_invalid_value)
698 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
699 << ShowCategory;
700 }
701
702 StringRef Format =
703 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
704 if (Format == "clang")
705 Opts.setFormat(DiagnosticOptions::Clang);
706 else if (Format == "msvc")
707 Opts.setFormat(DiagnosticOptions::Msvc);
708 else if (Format == "msvc-fallback") {
709 Opts.setFormat(DiagnosticOptions::Msvc);
710 Opts.CLFallbackMode = true;
711 } else if (Format == "vi")
712 Opts.setFormat(DiagnosticOptions::Vi);
713 else {
714 Success = false;
715 if (Diags)
716 Diags->Report(diag::err_drv_invalid_value)
717 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
718 << Format;
719 }
720
721 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
722 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
723 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
724 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
725 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
726 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
727 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
728 Opts.MacroBacktraceLimit =
729 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
730 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
731 Opts.TemplateBacktraceLimit = getLastArgIntValue(
732 Args, OPT_ftemplate_backtrace_limit,
733 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
734 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
735 Args, OPT_fconstexpr_backtrace_limit,
736 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
737 Opts.SpellCheckingLimit = getLastArgIntValue(
738 Args, OPT_fspell_checking_limit,
739 DiagnosticOptions::DefaultSpellCheckingLimit, Diags);
740 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
741 DiagnosticOptions::DefaultTabStop, Diags);
742 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
743 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
744 if (Diags)
745 Diags->Report(diag::warn_ignoring_ftabstop_value)
746 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
747 }
748 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
749 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
750 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
751
752 return Success;
753 }
754
ParseFileSystemArgs(FileSystemOptions & Opts,ArgList & Args)755 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
756 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
757 }
758
ParseFrontendArgs(FrontendOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags)759 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
760 DiagnosticsEngine &Diags) {
761 using namespace options;
762 Opts.ProgramAction = frontend::ParseSyntaxOnly;
763 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
764 switch (A->getOption().getID()) {
765 default:
766 llvm_unreachable("Invalid option in group!");
767 case OPT_ast_list:
768 Opts.ProgramAction = frontend::ASTDeclList; break;
769 case OPT_ast_dump:
770 case OPT_ast_dump_lookups:
771 Opts.ProgramAction = frontend::ASTDump; break;
772 case OPT_ast_print:
773 Opts.ProgramAction = frontend::ASTPrint; break;
774 case OPT_ast_view:
775 Opts.ProgramAction = frontend::ASTView; break;
776 case OPT_dump_raw_tokens:
777 Opts.ProgramAction = frontend::DumpRawTokens; break;
778 case OPT_dump_tokens:
779 Opts.ProgramAction = frontend::DumpTokens; break;
780 case OPT_S:
781 Opts.ProgramAction = frontend::EmitAssembly; break;
782 case OPT_emit_llvm_bc:
783 Opts.ProgramAction = frontend::EmitBC; break;
784 case OPT_emit_html:
785 Opts.ProgramAction = frontend::EmitHTML; break;
786 case OPT_emit_llvm:
787 Opts.ProgramAction = frontend::EmitLLVM; break;
788 case OPT_emit_llvm_only:
789 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
790 case OPT_emit_codegen_only:
791 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
792 case OPT_emit_obj:
793 Opts.ProgramAction = frontend::EmitObj; break;
794 case OPT_fixit_EQ:
795 Opts.FixItSuffix = A->getValue();
796 // fall-through!
797 case OPT_fixit:
798 Opts.ProgramAction = frontend::FixIt; break;
799 case OPT_emit_module:
800 Opts.ProgramAction = frontend::GenerateModule; break;
801 case OPT_emit_pch:
802 Opts.ProgramAction = frontend::GeneratePCH; break;
803 case OPT_emit_pth:
804 Opts.ProgramAction = frontend::GeneratePTH; break;
805 case OPT_init_only:
806 Opts.ProgramAction = frontend::InitOnly; break;
807 case OPT_fsyntax_only:
808 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
809 case OPT_module_file_info:
810 Opts.ProgramAction = frontend::ModuleFileInfo; break;
811 case OPT_verify_pch:
812 Opts.ProgramAction = frontend::VerifyPCH; break;
813 case OPT_print_decl_contexts:
814 Opts.ProgramAction = frontend::PrintDeclContext; break;
815 case OPT_print_preamble:
816 Opts.ProgramAction = frontend::PrintPreamble; break;
817 case OPT_E:
818 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
819 case OPT_rewrite_macros:
820 Opts.ProgramAction = frontend::RewriteMacros; break;
821 case OPT_rewrite_objc:
822 Opts.ProgramAction = frontend::RewriteObjC; break;
823 case OPT_rewrite_test:
824 Opts.ProgramAction = frontend::RewriteTest; break;
825 case OPT_analyze:
826 Opts.ProgramAction = frontend::RunAnalysis; break;
827 case OPT_migrate:
828 Opts.ProgramAction = frontend::MigrateSource; break;
829 case OPT_Eonly:
830 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
831 }
832 }
833
834 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
835 Opts.Plugins.push_back(A->getValue(0));
836 Opts.ProgramAction = frontend::PluginAction;
837 Opts.ActionName = A->getValue();
838
839 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
840 end = Args.filtered_end(); it != end; ++it) {
841 if ((*it)->getValue(0) == Opts.ActionName)
842 Opts.PluginArgs.push_back((*it)->getValue(1));
843 }
844 }
845
846 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
847 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
848 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
849 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
850 end = Args.filtered_end(); it != end; ++it) {
851 if ((*it)->getValue(0) == Opts.AddPluginActions[i])
852 Opts.AddPluginArgs[i].push_back((*it)->getValue(1));
853 }
854 }
855
856 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
857 Opts.CodeCompletionAt =
858 ParsedSourceLocation::FromString(A->getValue());
859 if (Opts.CodeCompletionAt.FileName.empty())
860 Diags.Report(diag::err_drv_invalid_value)
861 << A->getAsString(Args) << A->getValue();
862 }
863 Opts.DisableFree = Args.hasArg(OPT_disable_free);
864
865 Opts.OutputFile = Args.getLastArgValue(OPT_o);
866 Opts.Plugins = Args.getAllArgValues(OPT_load);
867 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
868 Opts.ShowHelp = Args.hasArg(OPT_help);
869 Opts.ShowStats = Args.hasArg(OPT_print_stats);
870 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
871 Opts.ShowVersion = Args.hasArg(OPT_version);
872 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
873 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
874 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
875 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
876 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
877 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
878 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
879 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
880 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
881 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
882 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
883 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
884 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
885
886 Opts.CodeCompleteOpts.IncludeMacros
887 = Args.hasArg(OPT_code_completion_macros);
888 Opts.CodeCompleteOpts.IncludeCodePatterns
889 = Args.hasArg(OPT_code_completion_patterns);
890 Opts.CodeCompleteOpts.IncludeGlobals
891 = !Args.hasArg(OPT_no_code_completion_globals);
892 Opts.CodeCompleteOpts.IncludeBriefComments
893 = Args.hasArg(OPT_code_completion_brief_comments);
894
895 Opts.OverrideRecordLayoutsFile
896 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
897 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
898 OPT_arcmt_modify,
899 OPT_arcmt_migrate)) {
900 switch (A->getOption().getID()) {
901 default:
902 llvm_unreachable("missed a case");
903 case OPT_arcmt_check:
904 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
905 break;
906 case OPT_arcmt_modify:
907 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
908 break;
909 case OPT_arcmt_migrate:
910 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
911 break;
912 }
913 }
914 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
915 Opts.ARCMTMigrateReportOut
916 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
917 Opts.ARCMTMigrateEmitARCErrors
918 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
919
920 if (Args.hasArg(OPT_objcmt_migrate_literals))
921 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
922 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
923 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
924 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
925 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
926 if (Args.hasArg(OPT_objcmt_migrate_property))
927 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
928 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
929 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
930 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
931 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
932 if (Args.hasArg(OPT_objcmt_migrate_annotation))
933 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
934 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
935 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
936 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
937 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
938 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
939 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
940 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
941 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
942 if (Args.hasArg(OPT_objcmt_atomic_property))
943 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
944 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
945 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
946 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
947 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
948 if (Args.hasArg(OPT_objcmt_migrate_all))
949 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
950
951 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
952
953 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
954 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
955 Diags.Report(diag::err_drv_argument_not_allowed_with)
956 << "ARC migration" << "ObjC migration";
957 }
958
959 InputKind DashX = IK_None;
960 if (const Arg *A = Args.getLastArg(OPT_x)) {
961 DashX = llvm::StringSwitch<InputKind>(A->getValue())
962 .Case("c", IK_C)
963 .Case("cl", IK_OpenCL)
964 .Case("cuda", IK_CUDA)
965 .Case("c++", IK_CXX)
966 .Case("objective-c", IK_ObjC)
967 .Case("objective-c++", IK_ObjCXX)
968 .Case("cpp-output", IK_PreprocessedC)
969 .Case("assembler-with-cpp", IK_Asm)
970 .Case("c++-cpp-output", IK_PreprocessedCXX)
971 .Case("objective-c-cpp-output", IK_PreprocessedObjC)
972 .Case("objc-cpp-output", IK_PreprocessedObjC)
973 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
974 .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
975 .Case("c-header", IK_C)
976 .Case("cl-header", IK_OpenCL)
977 .Case("objective-c-header", IK_ObjC)
978 .Case("c++-header", IK_CXX)
979 .Case("objective-c++-header", IK_ObjCXX)
980 .Cases("ast", "pcm", IK_AST)
981 .Case("ir", IK_LLVM_IR)
982 .Default(IK_None);
983 if (DashX == IK_None)
984 Diags.Report(diag::err_drv_invalid_value)
985 << A->getAsString(Args) << A->getValue();
986 }
987
988 // '-' is the default input if none is given.
989 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
990 Opts.Inputs.clear();
991 if (Inputs.empty())
992 Inputs.push_back("-");
993 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
994 InputKind IK = DashX;
995 if (IK == IK_None) {
996 IK = FrontendOptions::getInputKindForExtension(
997 StringRef(Inputs[i]).rsplit('.').second);
998 // FIXME: Remove this hack.
999 if (i == 0)
1000 DashX = IK;
1001 }
1002 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
1003 }
1004
1005 return DashX;
1006 }
1007
GetResourcesPath(const char * Argv0,void * MainAddr)1008 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1009 void *MainAddr) {
1010 std::string ClangExecutable =
1011 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1012 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
1013
1014 // Compute the path to the resource directory.
1015 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
1016 SmallString<128> P(Dir);
1017 if (ClangResourceDir != "") {
1018 llvm::sys::path::append(P, ClangResourceDir);
1019 } else {
1020 StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX);
1021 llvm::sys::path::append(P, "..", Twine("lib") + ClangLibdirSuffix, "clang",
1022 CLANG_VERSION_STRING);
1023 }
1024
1025 return P.str();
1026 }
1027
ParseHeaderSearchArgs(HeaderSearchOptions & Opts,ArgList & Args)1028 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1029 using namespace options;
1030 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1031 Opts.Verbose = Args.hasArg(OPT_v);
1032 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1033 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1034 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1035 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1036 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1037 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1038 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path);
1039 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
1040 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1041 // -fmodules implies -fmodule-maps
1042 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules);
1043 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
1044 Opts.ModuleCachePruneInterval =
1045 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
1046 Opts.ModuleCachePruneAfter =
1047 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
1048 Opts.ModulesValidateOncePerBuildSession =
1049 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
1050 Opts.BuildSessionTimestamp =
1051 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
1052 Opts.ModulesValidateSystemHeaders =
1053 Args.hasArg(OPT_fmodules_validate_system_headers);
1054
1055 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro),
1056 ie = Args.filtered_end();
1057 it != ie; ++it) {
1058 StringRef MacroDef = (*it)->getValue();
1059 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first);
1060 }
1061
1062 // Add -I..., -F..., and -index-header-map options in order.
1063 bool IsIndexHeaderMap = false;
1064 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1065 OPT_index_header_map),
1066 ie = Args.filtered_end(); it != ie; ++it) {
1067 if ((*it)->getOption().matches(OPT_index_header_map)) {
1068 // -index-header-map applies to the next -I or -F.
1069 IsIndexHeaderMap = true;
1070 continue;
1071 }
1072
1073 frontend::IncludeDirGroup Group
1074 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1075
1076 Opts.AddPath((*it)->getValue(), Group,
1077 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1078 IsIndexHeaderMap = false;
1079 }
1080
1081 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1082 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1083 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1084 OPT_iwithprefixbefore),
1085 ie = Args.filtered_end(); it != ie; ++it) {
1086 const Arg *A = *it;
1087 if (A->getOption().matches(OPT_iprefix))
1088 Prefix = A->getValue();
1089 else if (A->getOption().matches(OPT_iwithprefix))
1090 Opts.AddPath(Prefix.str() + A->getValue(),
1091 frontend::After, false, true);
1092 else
1093 Opts.AddPath(Prefix.str() + A->getValue(),
1094 frontend::Angled, false, true);
1095 }
1096
1097 for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1098 ie = Args.filtered_end(); it != ie; ++it)
1099 Opts.AddPath((*it)->getValue(), frontend::After, false, true);
1100 for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1101 ie = Args.filtered_end(); it != ie; ++it)
1102 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true);
1103 for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1104 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1105 Opts.AddPath((*it)->getValue(), frontend::System, false,
1106 !(*it)->getOption().matches(OPT_iwithsysroot));
1107 for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1108 ie = Args.filtered_end(); it != ie; ++it)
1109 Opts.AddPath((*it)->getValue(), frontend::System, true, true);
1110
1111 // Add the paths for the various language specific isystem flags.
1112 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1113 ie = Args.filtered_end(); it != ie; ++it)
1114 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true);
1115 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1116 ie = Args.filtered_end(); it != ie; ++it)
1117 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true);
1118 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1119 ie = Args.filtered_end(); it != ie; ++it)
1120 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true);
1121 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1122 ie = Args.filtered_end(); it != ie; ++it)
1123 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true);
1124
1125 // Add the internal paths from a driver that detects standard include paths.
1126 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1127 OPT_internal_externc_isystem),
1128 E = Args.filtered_end();
1129 I != E; ++I) {
1130 frontend::IncludeDirGroup Group = frontend::System;
1131 if ((*I)->getOption().matches(OPT_internal_externc_isystem))
1132 Group = frontend::ExternCSystem;
1133 Opts.AddPath((*I)->getValue(), Group, false, true);
1134 }
1135
1136 // Add the path prefixes which are implicitly treated as being system headers.
1137 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix,
1138 OPT_no_system_header_prefix),
1139 E = Args.filtered_end();
1140 I != E; ++I)
1141 Opts.AddSystemHeaderPrefix(
1142 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix));
1143
1144 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay),
1145 E = Args.filtered_end(); I != E; ++I)
1146 Opts.AddVFSOverlayFile((*I)->getValue());
1147 }
1148
setLangDefaults(LangOptions & Opts,InputKind IK,LangStandard::Kind LangStd)1149 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1150 LangStandard::Kind LangStd) {
1151 // Set some properties which depend solely on the input kind; it would be nice
1152 // to move these to the language standard, and have the driver resolve the
1153 // input kind + language standard.
1154 if (IK == IK_Asm) {
1155 Opts.AsmPreprocessor = 1;
1156 } else if (IK == IK_ObjC ||
1157 IK == IK_ObjCXX ||
1158 IK == IK_PreprocessedObjC ||
1159 IK == IK_PreprocessedObjCXX) {
1160 Opts.ObjC1 = Opts.ObjC2 = 1;
1161 }
1162
1163 if (LangStd == LangStandard::lang_unspecified) {
1164 // Based on the base language, pick one.
1165 switch (IK) {
1166 case IK_None:
1167 case IK_AST:
1168 case IK_LLVM_IR:
1169 llvm_unreachable("Invalid input kind!");
1170 case IK_OpenCL:
1171 LangStd = LangStandard::lang_opencl;
1172 break;
1173 case IK_CUDA:
1174 LangStd = LangStandard::lang_cuda;
1175 break;
1176 case IK_Asm:
1177 case IK_C:
1178 case IK_PreprocessedC:
1179 case IK_ObjC:
1180 case IK_PreprocessedObjC:
1181 LangStd = LangStandard::lang_gnu11;
1182 break;
1183 case IK_CXX:
1184 case IK_PreprocessedCXX:
1185 case IK_ObjCXX:
1186 case IK_PreprocessedObjCXX:
1187 LangStd = LangStandard::lang_gnucxx98;
1188 break;
1189 }
1190 }
1191
1192 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1193 Opts.LineComment = Std.hasLineComments();
1194 Opts.C99 = Std.isC99();
1195 Opts.C11 = Std.isC11();
1196 Opts.CPlusPlus = Std.isCPlusPlus();
1197 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1198 Opts.CPlusPlus14 = Std.isCPlusPlus14();
1199 Opts.CPlusPlus1z = Std.isCPlusPlus1z();
1200 Opts.Digraphs = Std.hasDigraphs();
1201 Opts.GNUMode = Std.isGNUMode();
1202 Opts.GNUInline = !Std.isC99();
1203 Opts.HexFloats = Std.hasHexFloats();
1204 Opts.ImplicitInt = Std.hasImplicitInt();
1205
1206 // Set OpenCL Version.
1207 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL;
1208 if (LangStd == LangStandard::lang_opencl)
1209 Opts.OpenCLVersion = 100;
1210 else if (LangStd == LangStandard::lang_opencl11)
1211 Opts.OpenCLVersion = 110;
1212 else if (LangStd == LangStandard::lang_opencl12)
1213 Opts.OpenCLVersion = 120;
1214 else if (LangStd == LangStandard::lang_opencl20)
1215 Opts.OpenCLVersion = 200;
1216
1217 // OpenCL has some additional defaults.
1218 if (Opts.OpenCL) {
1219 Opts.AltiVec = 0;
1220 Opts.CXXOperatorNames = 1;
1221 Opts.LaxVectorConversions = 0;
1222 Opts.DefaultFPContract = 1;
1223 Opts.NativeHalfType = 1;
1224 }
1225
1226 Opts.CUDA = LangStd == LangStandard::lang_cuda || IK == IK_CUDA;
1227
1228 // OpenCL and C++ both have bool, true, false keywords.
1229 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1230
1231 // OpenCL has half keyword
1232 Opts.Half = Opts.OpenCL;
1233
1234 // C++ has wchar_t keyword.
1235 Opts.WChar = Opts.CPlusPlus;
1236
1237 Opts.GNUKeywords = Opts.GNUMode;
1238 Opts.CXXOperatorNames = Opts.CPlusPlus;
1239
1240 Opts.DollarIdents = !Opts.AsmPreprocessor;
1241
1242 // C++14 onwards has sized global deallocation functions.
1243 Opts.SizedDeallocation = Opts.CPlusPlus14;
1244 }
1245
1246 /// Attempt to parse a visibility value out of the given argument.
parseVisibility(Arg * arg,ArgList & args,DiagnosticsEngine & diags)1247 static Visibility parseVisibility(Arg *arg, ArgList &args,
1248 DiagnosticsEngine &diags) {
1249 StringRef value = arg->getValue();
1250 if (value == "default") {
1251 return DefaultVisibility;
1252 } else if (value == "hidden") {
1253 return HiddenVisibility;
1254 } else if (value == "protected") {
1255 // FIXME: diagnose if target does not support protected visibility
1256 return ProtectedVisibility;
1257 }
1258
1259 diags.Report(diag::err_drv_invalid_value)
1260 << arg->getAsString(args) << value;
1261 return DefaultVisibility;
1262 }
1263
parseMSCVersion(ArgList & Args,DiagnosticsEngine & Diags)1264 static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) {
1265 auto Arg = Args.getLastArg(OPT_fms_compatibility_version);
1266 if (!Arg)
1267 return 0;
1268
1269 // The MSC versioning scheme involves four versioning components:
1270 // - Major
1271 // - Minor
1272 // - Build
1273 // - Patch
1274 //
1275 // We accept either the old style (_MSC_VER) value, or a _MSC_FULL_VER value.
1276 // Additionally, the value may be provided in the form of a more readable
1277 // MM.mm.bbbbb.pp version.
1278 //
1279 // Unfortunately, due to the bit-width limitations, we cannot currently encode
1280 // the value for the patch level.
1281
1282 unsigned VC[4] = {0};
1283 StringRef Value = Arg->getValue();
1284 SmallVector<StringRef, 4> Components;
1285
1286 Value.split(Components, ".", llvm::array_lengthof(VC));
1287 for (unsigned CI = 0,
1288 CE = std::min(Components.size(), llvm::array_lengthof(VC));
1289 CI < CE; ++CI) {
1290 if (Components[CI].getAsInteger(10, VC[CI])) {
1291 Diags.Report(diag::err_drv_invalid_value)
1292 << Arg->getAsString(Args) << Value;
1293 return 0;
1294 }
1295 }
1296
1297 // FIXME we cannot encode the patch level
1298 return VC[0] * 10000000 + VC[1] * 100000 + VC[2];
1299 }
1300
ParseLangArgs(LangOptions & Opts,ArgList & Args,InputKind IK,DiagnosticsEngine & Diags)1301 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1302 DiagnosticsEngine &Diags) {
1303 // FIXME: Cleanup per-file based stuff.
1304 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1305 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1306 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1307 #define LANGSTANDARD(id, name, desc, features) \
1308 .Case(name, LangStandard::lang_##id)
1309 #include "clang/Frontend/LangStandards.def"
1310 .Default(LangStandard::lang_unspecified);
1311 if (LangStd == LangStandard::lang_unspecified)
1312 Diags.Report(diag::err_drv_invalid_value)
1313 << A->getAsString(Args) << A->getValue();
1314 else {
1315 // Valid standard, check to make sure language and standard are
1316 // compatible.
1317 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1318 switch (IK) {
1319 case IK_C:
1320 case IK_ObjC:
1321 case IK_PreprocessedC:
1322 case IK_PreprocessedObjC:
1323 if (!(Std.isC89() || Std.isC99()))
1324 Diags.Report(diag::err_drv_argument_not_allowed_with)
1325 << A->getAsString(Args) << "C/ObjC";
1326 break;
1327 case IK_CXX:
1328 case IK_ObjCXX:
1329 case IK_PreprocessedCXX:
1330 case IK_PreprocessedObjCXX:
1331 if (!Std.isCPlusPlus())
1332 Diags.Report(diag::err_drv_argument_not_allowed_with)
1333 << A->getAsString(Args) << "C++/ObjC++";
1334 break;
1335 case IK_OpenCL:
1336 if (!Std.isC99())
1337 Diags.Report(diag::err_drv_argument_not_allowed_with)
1338 << A->getAsString(Args) << "OpenCL";
1339 break;
1340 case IK_CUDA:
1341 if (!Std.isCPlusPlus())
1342 Diags.Report(diag::err_drv_argument_not_allowed_with)
1343 << A->getAsString(Args) << "CUDA";
1344 break;
1345 default:
1346 break;
1347 }
1348 }
1349 }
1350
1351 // -cl-std only applies for OpenCL language standards.
1352 // Override the -std option in this case.
1353 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1354 LangStandard::Kind OpenCLLangStd
1355 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1356 .Case("CL", LangStandard::lang_opencl)
1357 .Case("CL1.1", LangStandard::lang_opencl11)
1358 .Case("CL1.2", LangStandard::lang_opencl12)
1359 .Case("CL2.0", LangStandard::lang_opencl20)
1360 .Default(LangStandard::lang_unspecified);
1361
1362 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1363 Diags.Report(diag::err_drv_invalid_value)
1364 << A->getAsString(Args) << A->getValue();
1365 }
1366 else
1367 LangStd = OpenCLLangStd;
1368 }
1369
1370 CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1371
1372 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1373 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1374 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1375 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1376 // name, as it doesn't seem a useful distinction.
1377 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1378 Opts.GNUKeywords);
1379
1380 if (Args.hasArg(OPT_fno_operator_names))
1381 Opts.CXXOperatorNames = 0;
1382
1383 if (Args.hasArg(OPT_fcuda_is_device))
1384 Opts.CUDAIsDevice = 1;
1385
1386 if (Opts.ObjC1) {
1387 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1388 StringRef value = arg->getValue();
1389 if (Opts.ObjCRuntime.tryParse(value))
1390 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1391 }
1392
1393 if (Args.hasArg(OPT_fobjc_gc_only))
1394 Opts.setGC(LangOptions::GCOnly);
1395 else if (Args.hasArg(OPT_fobjc_gc))
1396 Opts.setGC(LangOptions::HybridGC);
1397 else if (Args.hasArg(OPT_fobjc_arc)) {
1398 Opts.ObjCAutoRefCount = 1;
1399 if (!Opts.ObjCRuntime.allowsARC())
1400 Diags.Report(diag::err_arc_unsupported_on_runtime);
1401
1402 // Only set ObjCARCWeak if ARC is enabled.
1403 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1404 Opts.ObjCARCWeak = 1;
1405 else
1406 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak();
1407 }
1408
1409 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1410 Opts.ObjCInferRelatedResultType = 0;
1411
1412 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
1413 Opts.ObjCSubscriptingLegacyRuntime =
1414 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
1415 }
1416
1417 if (Args.hasArg(OPT_fgnu89_inline))
1418 Opts.GNUInline = 1;
1419
1420 if (Args.hasArg(OPT_fapple_kext)) {
1421 if (!Opts.CPlusPlus)
1422 Diags.Report(diag::warn_c_kext);
1423 else
1424 Opts.AppleKext = 1;
1425 }
1426
1427 if (Args.hasArg(OPT_print_ivar_layout))
1428 Opts.ObjCGCBitmapPrint = 1;
1429 if (Args.hasArg(OPT_fno_constant_cfstrings))
1430 Opts.NoConstantCFStrings = 1;
1431
1432 if (Args.hasArg(OPT_faltivec))
1433 Opts.AltiVec = 1;
1434
1435 if (Args.hasArg(OPT_pthread))
1436 Opts.POSIXThreads = 1;
1437
1438 // The value-visibility mode defaults to "default".
1439 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
1440 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
1441 } else {
1442 Opts.setValueVisibilityMode(DefaultVisibility);
1443 }
1444
1445 // The type-visibility mode defaults to the value-visibility mode.
1446 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
1447 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
1448 } else {
1449 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
1450 }
1451
1452 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1453 Opts.InlineVisibilityHidden = 1;
1454
1455 if (Args.hasArg(OPT_ftrapv)) {
1456 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1457 // Set the handler, if one is specified.
1458 Opts.OverflowHandler =
1459 Args.getLastArgValue(OPT_ftrapv_handler);
1460 }
1461 else if (Args.hasArg(OPT_fwrapv))
1462 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1463
1464 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
1465 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
1466 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
1467 Opts.MSCompatibilityVersion = parseMSCVersion(Args, Diags);
1468
1469 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1470 // is specified, or -std is set to a conforming mode.
1471 // Trigraphs are disabled by default in c++1z onwards.
1472 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z;
1473 Opts.Trigraphs =
1474 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
1475
1476 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1477 OPT_fno_dollars_in_identifiers,
1478 Opts.DollarIdents);
1479 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1480 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
1481 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1482 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1483 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1484 Opts.ConstStrings);
1485 if (Args.hasArg(OPT_fno_lax_vector_conversions))
1486 Opts.LaxVectorConversions = 0;
1487 if (Args.hasArg(OPT_fno_threadsafe_statics))
1488 Opts.ThreadsafeStatics = 0;
1489 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1490 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1491 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1492 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1493 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1494
1495 Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1496 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
1497 Opts.Blocks = Args.hasArg(OPT_fblocks);
1498 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1499 Opts.Modules = Args.hasArg(OPT_fmodules);
1500 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
1501 Opts.ModulesDeclUse =
1502 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
1503 Opts.ModulesSearchAll = Opts.Modules &&
1504 !Args.hasArg(OPT_fno_modules_search_all) &&
1505 Args.hasArg(OPT_fmodules_search_all);
1506 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
1507 Opts.ModulesImplicitMaps = Args.hasFlag(OPT_fmodules_implicit_maps,
1508 OPT_fno_modules_implicit_maps, true);
1509 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
1510 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
1511 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
1512 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1513 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1514 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1515 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
1516 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1517 Opts.SizedDeallocation |= Args.hasArg(OPT_fsized_deallocation);
1518 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1519 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1520 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1521 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
1522 Opts.InstantiationDepth =
1523 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags);
1524 Opts.ArrowDepth =
1525 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
1526 Opts.ConstexprCallDepth =
1527 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
1528 Opts.ConstexprStepLimit =
1529 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
1530 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
1531 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1532 Opts.NumLargeByValueCopy =
1533 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
1534 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1535 Opts.ObjCConstantStringClass =
1536 Args.getLastArgValue(OPT_fconstant_string_class);
1537 Opts.ObjCDefaultSynthProperties =
1538 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
1539 Opts.EncodeExtendedBlockSig =
1540 Args.hasArg(OPT_fencode_extended_block_signature);
1541 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1542 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
1543 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
1544 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1545 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags);
1546 Opts.Static = Args.hasArg(OPT_static_define);
1547 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1548 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
1549 || Args.hasArg(OPT_fdump_record_layouts);
1550 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1551 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1552 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1553 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1554 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1555 Opts.MRTD = Args.hasArg(OPT_mrtd);
1556 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1557 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1558 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1559 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1560 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
1561 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
1562 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1563 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1564 Opts.ImplementationOfModule =
1565 Args.getLastArgValue(OPT_fmodule_implementation_of);
1566 Opts.NativeHalfType = Opts.NativeHalfType;
1567 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns);
1568
1569 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() &&
1570 Opts.CurrentModule != Opts.ImplementationOfModule) {
1571 Diags.Report(diag::err_conflicting_module_names)
1572 << Opts.CurrentModule << Opts.ImplementationOfModule;
1573 }
1574
1575 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
1576 switch (llvm::StringSwitch<unsigned>(A->getValue())
1577 .Case("target", LangOptions::ASMM_Target)
1578 .Case("no", LangOptions::ASMM_Off)
1579 .Case("yes", LangOptions::ASMM_On)
1580 .Default(255)) {
1581 default:
1582 Diags.Report(diag::err_drv_invalid_value)
1583 << "-faddress-space-map-mangling=" << A->getValue();
1584 break;
1585 case LangOptions::ASMM_Target:
1586 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
1587 break;
1588 case LangOptions::ASMM_On:
1589 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
1590 break;
1591 case LangOptions::ASMM_Off:
1592 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
1593 break;
1594 }
1595 }
1596
1597 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
1598 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
1599 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
1600 A->getValue())
1601 .Case("single",
1602 LangOptions::PPTMK_FullGeneralitySingleInheritance)
1603 .Case("multiple",
1604 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
1605 .Case("virtual",
1606 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
1607 .Default(LangOptions::PPTMK_BestCase);
1608 if (InheritanceModel == LangOptions::PPTMK_BestCase)
1609 Diags.Report(diag::err_drv_invalid_value)
1610 << "-fms-memptr-rep=" << A->getValue();
1611
1612 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
1613 }
1614
1615 // Check if -fopenmp= is specified.
1616 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) {
1617 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue())
1618 .Case("libiomp5", true)
1619 .Default(false);
1620 }
1621
1622 // Record whether the __DEPRECATED define was requested.
1623 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1624 OPT_fno_deprecated_macro,
1625 Opts.Deprecated);
1626
1627 // FIXME: Eliminate this dependency.
1628 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
1629 OptSize = getOptimizationLevelSize(Args);
1630 Opts.Optimize = Opt != 0;
1631 Opts.OptimizeSize = OptSize != 0;
1632
1633 // This is the __NO_INLINE__ define, which just depends on things like the
1634 // optimization level and -fno-inline, not actually whether the backend has
1635 // inlining enabled.
1636 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
1637
1638 Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
1639 Args.hasArg(OPT_cl_fast_relaxed_math);
1640 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
1641 Args.hasArg(OPT_cl_finite_math_only) ||
1642 Args.hasArg(OPT_cl_fast_relaxed_math);
1643
1644 Opts.RetainCommentsFromSystemHeaders =
1645 Args.hasArg(OPT_fretain_comments_from_system_headers);
1646
1647 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1648 switch (SSP) {
1649 default:
1650 Diags.Report(diag::err_drv_invalid_value)
1651 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1652 break;
1653 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1654 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
1655 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
1656 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
1657 }
1658
1659 // Parse -fsanitize= arguments.
1660 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
1661 Diags, Opts.Sanitize);
1662 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
1663 Opts.SanitizeAddressFieldPadding =
1664 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
1665 Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist);
1666 }
1667
ParsePreprocessorArgs(PreprocessorOptions & Opts,ArgList & Args,FileManager & FileMgr,DiagnosticsEngine & Diags)1668 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1669 FileManager &FileMgr,
1670 DiagnosticsEngine &Diags) {
1671 using namespace options;
1672 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1673 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1674 if (const Arg *A = Args.getLastArg(OPT_token_cache))
1675 Opts.TokenCache = A->getValue();
1676 else
1677 Opts.TokenCache = Opts.ImplicitPTHInclude;
1678 Opts.UsePredefines = !Args.hasArg(OPT_undef);
1679 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1680 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1681
1682 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1683 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1684 ie = Args.filtered_end(); it != ie; ++it) {
1685 const Arg *A = *it;
1686 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
1687 }
1688
1689 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1690 StringRef Value(A->getValue());
1691 size_t Comma = Value.find(',');
1692 unsigned Bytes = 0;
1693 unsigned EndOfLine = 0;
1694
1695 if (Comma == StringRef::npos ||
1696 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1697 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1698 Diags.Report(diag::err_drv_preamble_format);
1699 else {
1700 Opts.PrecompiledPreambleBytes.first = Bytes;
1701 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1702 }
1703 }
1704
1705 // Add macros from the command line.
1706 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1707 ie = Args.filtered_end(); it != ie; ++it) {
1708 if ((*it)->getOption().matches(OPT_D))
1709 Opts.addMacroDef((*it)->getValue());
1710 else
1711 Opts.addMacroUndef((*it)->getValue());
1712 }
1713
1714 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1715
1716 // Add the ordered list of -includes.
1717 for (arg_iterator it = Args.filtered_begin(OPT_include),
1718 ie = Args.filtered_end(); it != ie; ++it) {
1719 const Arg *A = *it;
1720 Opts.Includes.push_back(A->getValue());
1721 }
1722
1723 for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1724 ie = Args.filtered_end(); it != ie; ++it) {
1725 const Arg *A = *it;
1726 Opts.ChainedIncludes.push_back(A->getValue());
1727 }
1728
1729 // Include 'altivec.h' if -faltivec option present
1730 if (Args.hasArg(OPT_faltivec))
1731 Opts.Includes.push_back("altivec.h");
1732
1733 for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1734 ie = Args.filtered_end(); it != ie; ++it) {
1735 const Arg *A = *it;
1736 std::pair<StringRef,StringRef> Split =
1737 StringRef(A->getValue()).split(';');
1738
1739 if (Split.second.empty()) {
1740 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1741 continue;
1742 }
1743
1744 Opts.addRemappedFile(Split.first, Split.second);
1745 }
1746
1747 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1748 StringRef Name = A->getValue();
1749 unsigned Library = llvm::StringSwitch<unsigned>(Name)
1750 .Case("libc++", ARCXX_libcxx)
1751 .Case("libstdc++", ARCXX_libstdcxx)
1752 .Case("none", ARCXX_nolib)
1753 .Default(~0U);
1754 if (Library == ~0U)
1755 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1756 else
1757 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1758 }
1759 }
1760
ParsePreprocessorOutputArgs(PreprocessorOutputOptions & Opts,ArgList & Args,frontend::ActionKind Action)1761 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1762 ArgList &Args,
1763 frontend::ActionKind Action) {
1764 using namespace options;
1765
1766 switch (Action) {
1767 case frontend::ASTDeclList:
1768 case frontend::ASTDump:
1769 case frontend::ASTPrint:
1770 case frontend::ASTView:
1771 case frontend::EmitAssembly:
1772 case frontend::EmitBC:
1773 case frontend::EmitHTML:
1774 case frontend::EmitLLVM:
1775 case frontend::EmitLLVMOnly:
1776 case frontend::EmitCodeGenOnly:
1777 case frontend::EmitObj:
1778 case frontend::FixIt:
1779 case frontend::GenerateModule:
1780 case frontend::GeneratePCH:
1781 case frontend::GeneratePTH:
1782 case frontend::ParseSyntaxOnly:
1783 case frontend::ModuleFileInfo:
1784 case frontend::VerifyPCH:
1785 case frontend::PluginAction:
1786 case frontend::PrintDeclContext:
1787 case frontend::RewriteObjC:
1788 case frontend::RewriteTest:
1789 case frontend::RunAnalysis:
1790 case frontend::MigrateSource:
1791 Opts.ShowCPP = 0;
1792 break;
1793
1794 case frontend::DumpRawTokens:
1795 case frontend::DumpTokens:
1796 case frontend::InitOnly:
1797 case frontend::PrintPreamble:
1798 case frontend::PrintPreprocessedInput:
1799 case frontend::RewriteMacros:
1800 case frontend::RunPreprocessorOnly:
1801 Opts.ShowCPP = !Args.hasArg(OPT_dM);
1802 break;
1803 }
1804
1805 Opts.ShowComments = Args.hasArg(OPT_C);
1806 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1807 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1808 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1809 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
1810 }
1811
ParseTargetArgs(TargetOptions & Opts,ArgList & Args)1812 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1813 using namespace options;
1814 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1815 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1816 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
1817 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
1818 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1819 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1820
1821 // Use the default target triple if unspecified.
1822 if (Opts.Triple.empty())
1823 Opts.Triple = llvm::sys::getDefaultTargetTriple();
1824 }
1825
CreateFromArgs(CompilerInvocation & Res,const char * const * ArgBegin,const char * const * ArgEnd,DiagnosticsEngine & Diags)1826 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1827 const char *const *ArgBegin,
1828 const char *const *ArgEnd,
1829 DiagnosticsEngine &Diags) {
1830 bool Success = true;
1831
1832 // Parse the arguments.
1833 std::unique_ptr<OptTable> Opts(createDriverOptTable());
1834 const unsigned IncludedFlagsBitmask = options::CC1Option;
1835 unsigned MissingArgIndex, MissingArgCount;
1836 std::unique_ptr<InputArgList> Args(
1837 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount,
1838 IncludedFlagsBitmask));
1839
1840 // Check for missing argument error.
1841 if (MissingArgCount) {
1842 Diags.Report(diag::err_drv_missing_argument)
1843 << Args->getArgString(MissingArgIndex) << MissingArgCount;
1844 Success = false;
1845 }
1846
1847 // Issue errors on unknown arguments.
1848 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1849 ie = Args->filtered_end(); it != ie; ++it) {
1850 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1851 Success = false;
1852 }
1853
1854 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success;
1855 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
1856 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1857 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
1858 && Success;
1859 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args);
1860 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1861 // FIXME: We shouldn't have to pass the DashX option around here
1862 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1863 ParseTargetArgs(Res.getTargetOpts(), *Args);
1864 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags,
1865 Res.getTargetOpts()) && Success;
1866 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1867 if (DashX != IK_AST && DashX != IK_LLVM_IR) {
1868 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
1869 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
1870 Res.getLangOpts()->ObjCExceptions = 1;
1871 }
1872 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1873 // PCH file and find the original header name. Remove the need to do that in
1874 // ParsePreprocessorArgs and remove the FileManager
1875 // parameters from the function and the "FileManager.h" #include.
1876 FileManager FileMgr(Res.getFileSystemOpts());
1877 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1878 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args,
1879 Res.getFrontendOpts().ProgramAction);
1880 return Success;
1881 }
1882
1883 namespace {
1884
1885 class ModuleSignature {
1886 SmallVector<uint64_t, 16> Data;
1887 unsigned CurBit;
1888 uint64_t CurValue;
1889
1890 public:
ModuleSignature()1891 ModuleSignature() : CurBit(0), CurValue(0) { }
1892
1893 void add(uint64_t Value, unsigned Bits);
1894 void add(StringRef Value);
1895 void flush();
1896
1897 llvm::APInt getAsInteger() const;
1898 };
1899 }
1900
add(uint64_t Value,unsigned int NumBits)1901 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
1902 CurValue |= Value << CurBit;
1903 if (CurBit + NumBits < 64) {
1904 CurBit += NumBits;
1905 return;
1906 }
1907
1908 // Add the current word.
1909 Data.push_back(CurValue);
1910
1911 if (CurBit)
1912 CurValue = Value >> (64-CurBit);
1913 else
1914 CurValue = 0;
1915 CurBit = (CurBit+NumBits) & 63;
1916 }
1917
flush()1918 void ModuleSignature::flush() {
1919 if (CurBit == 0)
1920 return;
1921
1922 Data.push_back(CurValue);
1923 CurBit = 0;
1924 CurValue = 0;
1925 }
1926
add(StringRef Value)1927 void ModuleSignature::add(StringRef Value) {
1928 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
1929 add(*I, 8);
1930 }
1931
getAsInteger() const1932 llvm::APInt ModuleSignature::getAsInteger() const {
1933 return llvm::APInt(Data.size() * 64, Data);
1934 }
1935
getModuleHash() const1936 std::string CompilerInvocation::getModuleHash() const {
1937 // Note: For QoI reasons, the things we use as a hash here should all be
1938 // dumped via the -module-info flag.
1939 using llvm::hash_code;
1940 using llvm::hash_value;
1941 using llvm::hash_combine;
1942
1943 // Start the signature with the compiler version.
1944 // FIXME: We'd rather use something more cryptographically sound than
1945 // CityHash, but this will do for now.
1946 hash_code code = hash_value(getClangFullRepositoryVersion());
1947
1948 // Extend the signature with the language options
1949 #define LANGOPT(Name, Bits, Default, Description) \
1950 code = hash_combine(code, LangOpts->Name);
1951 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1952 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
1953 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
1954 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
1955 #include "clang/Basic/LangOptions.def"
1956
1957 // Extend the signature with the target options.
1958 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
1959 TargetOpts->ABI);
1960 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
1961 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
1962
1963 // Extend the signature with preprocessor options.
1964 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
1965 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
1966 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
1967
1968 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
1969 I = getPreprocessorOpts().Macros.begin(),
1970 IEnd = getPreprocessorOpts().Macros.end();
1971 I != IEnd; ++I) {
1972 // If we're supposed to ignore this macro for the purposes of modules,
1973 // don't put it into the hash.
1974 if (!hsOpts.ModulesIgnoreMacros.empty()) {
1975 // Check whether we're ignoring this macro.
1976 StringRef MacroDef = I->first;
1977 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first))
1978 continue;
1979 }
1980
1981 code = hash_combine(code, I->first, I->second);
1982 }
1983
1984 // Extend the signature with the sysroot.
1985 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes,
1986 hsOpts.UseStandardSystemIncludes,
1987 hsOpts.UseStandardCXXIncludes,
1988 hsOpts.UseLibcxx);
1989 code = hash_combine(code, hsOpts.ResourceDir);
1990
1991 // Extend the signature with the user build path.
1992 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
1993
1994 // Darwin-specific hack: if we have a sysroot, use the contents and
1995 // modification time of
1996 // $sysroot/System/Library/CoreServices/SystemVersion.plist
1997 // as part of the module hash.
1998 if (!hsOpts.Sysroot.empty()) {
1999 SmallString<128> systemVersionFile;
2000 systemVersionFile += hsOpts.Sysroot;
2001 llvm::sys::path::append(systemVersionFile, "System");
2002 llvm::sys::path::append(systemVersionFile, "Library");
2003 llvm::sys::path::append(systemVersionFile, "CoreServices");
2004 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist");
2005
2006 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer =
2007 llvm::MemoryBuffer::getFile(systemVersionFile.str());
2008 if (buffer) {
2009 code = hash_combine(code, buffer.get()->getBuffer());
2010
2011 struct stat statBuf;
2012 if (stat(systemVersionFile.c_str(), &statBuf) == 0)
2013 code = hash_combine(code, statBuf.st_mtime);
2014 }
2015 }
2016
2017 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
2018 }
2019
2020 namespace clang {
2021
2022 template<typename IntTy>
getLastArgIntValueImpl(const ArgList & Args,OptSpecifier Id,IntTy Default,DiagnosticsEngine * Diags)2023 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
2024 IntTy Default,
2025 DiagnosticsEngine *Diags) {
2026 IntTy Res = Default;
2027 if (Arg *A = Args.getLastArg(Id)) {
2028 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
2029 if (Diags)
2030 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
2031 << A->getValue();
2032 }
2033 }
2034 return Res;
2035 }
2036
2037
2038 // Declared in clang/Frontend/Utils.h.
getLastArgIntValue(const ArgList & Args,OptSpecifier Id,int Default,DiagnosticsEngine * Diags)2039 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
2040 DiagnosticsEngine *Diags) {
2041 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
2042 }
2043
getLastArgUInt64Value(const ArgList & Args,OptSpecifier Id,uint64_t Default,DiagnosticsEngine * Diags)2044 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
2045 uint64_t Default,
2046 DiagnosticsEngine *Diags) {
2047 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
2048 }
2049
BuryPointer(const void * Ptr)2050 void BuryPointer(const void *Ptr) {
2051 // This function may be called only a small fixed amount of times per each
2052 // invocation, otherwise we do actually have a leak which we want to report.
2053 // If this function is called more than kGraveYardMaxSize times, the pointers
2054 // will not be properly buried and a leak detector will report a leak, which
2055 // is what we want in such case.
2056 static const size_t kGraveYardMaxSize = 16;
2057 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2058 #if !defined(_LIBCPP_HAS_NO_THREADS) && defined(__minix)
2059 static std::atomic<unsigned> GraveYardSize;
2060 #else
2061 static unsigned GraveYardSize;
2062 #endif // !defined(_LIBCPP_HAS_NO_THREADS) && defined(__minix)
2063 unsigned Idx = GraveYardSize++;
2064 if (Idx >= kGraveYardMaxSize)
2065 return;
2066 GraveYard[Idx] = Ptr;
2067 }
2068
2069 IntrusiveRefCntPtr<vfs::FileSystem>
createVFSFromCompilerInvocation(const CompilerInvocation & CI,DiagnosticsEngine & Diags)2070 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2071 DiagnosticsEngine &Diags) {
2072 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2073 return vfs::getRealFileSystem();
2074
2075 IntrusiveRefCntPtr<vfs::OverlayFileSystem>
2076 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem()));
2077 // earlier vfs files are on the bottom
2078 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2079 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2080 llvm::MemoryBuffer::getFile(File);
2081 if (!Buffer) {
2082 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2083 return IntrusiveRefCntPtr<vfs::FileSystem>();
2084 }
2085
2086 IntrusiveRefCntPtr<vfs::FileSystem> FS =
2087 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr);
2088 if (!FS.get()) {
2089 Diags.Report(diag::err_invalid_vfs_overlay) << File;
2090 return IntrusiveRefCntPtr<vfs::FileSystem>();
2091 }
2092 Overlay->pushOverlay(FS);
2093 }
2094 return Overlay;
2095 }
2096 } // end namespace clang
2097