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 #include <atomic>
39 #include <memory>
40 #include <sys/stat.h>
41 #include <system_error>
42 using namespace clang;
43
44 //===----------------------------------------------------------------------===//
45 // Initialization.
46 //===----------------------------------------------------------------------===//
47
CompilerInvocationBase()48 CompilerInvocationBase::CompilerInvocationBase()
49 : LangOpts(new LangOptions()), TargetOpts(new TargetOptions()),
50 DiagnosticOpts(new DiagnosticOptions()),
51 HeaderSearchOpts(new HeaderSearchOptions()),
52 PreprocessorOpts(new PreprocessorOptions()) {}
53
CompilerInvocationBase(const CompilerInvocationBase & X)54 CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
55 : RefCountedBase<CompilerInvocation>(),
56 LangOpts(new LangOptions(*X.getLangOpts())),
57 TargetOpts(new TargetOptions(X.getTargetOpts())),
58 DiagnosticOpts(new DiagnosticOptions(X.getDiagnosticOpts())),
59 HeaderSearchOpts(new HeaderSearchOptions(X.getHeaderSearchOpts())),
60 PreprocessorOpts(new PreprocessorOptions(X.getPreprocessorOpts())) {}
61
~CompilerInvocationBase()62 CompilerInvocationBase::~CompilerInvocationBase() {}
63
64 //===----------------------------------------------------------------------===//
65 // Deserialization (from args)
66 //===----------------------------------------------------------------------===//
67
68 using namespace clang::driver;
69 using namespace clang::driver::options;
70 using namespace llvm::opt;
71
72 //
73
getOptimizationLevel(ArgList & Args,InputKind IK,DiagnosticsEngine & Diags)74 static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
75 DiagnosticsEngine &Diags) {
76 unsigned DefaultOpt = 0;
77 if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
78 DefaultOpt = 2;
79
80 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
81 if (A->getOption().matches(options::OPT_O0))
82 return 0;
83
84 if (A->getOption().matches(options::OPT_Ofast))
85 return 3;
86
87 assert (A->getOption().matches(options::OPT_O));
88
89 StringRef S(A->getValue());
90 if (S == "s" || S == "z" || S.empty())
91 return 2;
92
93 return getLastArgIntValue(Args, OPT_O, DefaultOpt, Diags);
94 }
95
96 return DefaultOpt;
97 }
98
getOptimizationLevelSize(ArgList & Args)99 static unsigned getOptimizationLevelSize(ArgList &Args) {
100 if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
101 if (A->getOption().matches(options::OPT_O)) {
102 switch (A->getValue()[0]) {
103 default:
104 return 0;
105 case 's':
106 return 1;
107 case 'z':
108 return 2;
109 }
110 }
111 }
112 return 0;
113 }
114
addDiagnosticArgs(ArgList & Args,OptSpecifier Group,OptSpecifier GroupWithValue,std::vector<std::string> & Diagnostics)115 static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
116 OptSpecifier GroupWithValue,
117 std::vector<std::string> &Diagnostics) {
118 for (Arg *A : Args.filtered(Group)) {
119 if (A->getOption().getKind() == Option::FlagClass) {
120 // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
121 // its name (minus the "W" or "R" at the beginning) to the warning list.
122 Diagnostics.push_back(A->getOption().getName().drop_front(1));
123 } else if (A->getOption().matches(GroupWithValue)) {
124 // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group.
125 Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-"));
126 } else {
127 // Otherwise, add its value (for OPT_W_Joined and similar).
128 for (const char *Arg : A->getValues())
129 Diagnostics.push_back(Arg);
130 }
131 }
132 }
133
ParseAnalyzerArgs(AnalyzerOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags)134 static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
135 DiagnosticsEngine &Diags) {
136 using namespace options;
137 bool Success = true;
138 if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
139 StringRef Name = A->getValue();
140 AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
141 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
142 .Case(CMDFLAG, NAME##Model)
143 #include "clang/StaticAnalyzer/Core/Analyses.def"
144 .Default(NumStores);
145 if (Value == NumStores) {
146 Diags.Report(diag::err_drv_invalid_value)
147 << A->getAsString(Args) << Name;
148 Success = false;
149 } else {
150 Opts.AnalysisStoreOpt = Value;
151 }
152 }
153
154 if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
155 StringRef Name = A->getValue();
156 AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
157 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
158 .Case(CMDFLAG, NAME##Model)
159 #include "clang/StaticAnalyzer/Core/Analyses.def"
160 .Default(NumConstraints);
161 if (Value == NumConstraints) {
162 Diags.Report(diag::err_drv_invalid_value)
163 << A->getAsString(Args) << Name;
164 Success = false;
165 } else {
166 Opts.AnalysisConstraintsOpt = Value;
167 }
168 }
169
170 if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
171 StringRef Name = A->getValue();
172 AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
173 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN) \
174 .Case(CMDFLAG, PD_##NAME)
175 #include "clang/StaticAnalyzer/Core/Analyses.def"
176 .Default(NUM_ANALYSIS_DIAG_CLIENTS);
177 if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
178 Diags.Report(diag::err_drv_invalid_value)
179 << A->getAsString(Args) << Name;
180 Success = false;
181 } else {
182 Opts.AnalysisDiagOpt = Value;
183 }
184 }
185
186 if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
187 StringRef Name = A->getValue();
188 AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
189 #define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
190 .Case(CMDFLAG, NAME)
191 #include "clang/StaticAnalyzer/Core/Analyses.def"
192 .Default(NumPurgeModes);
193 if (Value == NumPurgeModes) {
194 Diags.Report(diag::err_drv_invalid_value)
195 << A->getAsString(Args) << Name;
196 Success = false;
197 } else {
198 Opts.AnalysisPurgeOpt = Value;
199 }
200 }
201
202 if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
203 StringRef Name = A->getValue();
204 AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
205 #define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
206 .Case(CMDFLAG, NAME)
207 #include "clang/StaticAnalyzer/Core/Analyses.def"
208 .Default(NumInliningModes);
209 if (Value == NumInliningModes) {
210 Diags.Report(diag::err_drv_invalid_value)
211 << A->getAsString(Args) << Name;
212 Success = false;
213 } else {
214 Opts.InliningMode = Value;
215 }
216 }
217
218 Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
219 Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks);
220
221 Opts.visualizeExplodedGraphWithGraphViz =
222 Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
223 Opts.visualizeExplodedGraphWithUbiGraph =
224 Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
225 Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
226 Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
227 Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
228 Opts.AnalyzeNestedBlocks =
229 Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
230 Opts.eagerlyAssumeBinOpBifurcation = Args.hasArg(OPT_analyzer_eagerly_assume);
231 Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
232 Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
233 Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
234 Opts.maxBlockVisitOnPath =
235 getLastArgIntValue(Args, OPT_analyzer_max_loop, 4, Diags);
236 Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
237 Opts.InlineMaxStackDepth =
238 getLastArgIntValue(Args, OPT_analyzer_inline_max_stack_depth,
239 Opts.InlineMaxStackDepth, Diags);
240
241 Opts.CheckersControlList.clear();
242 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
243 OPT_analyzer_disable_checker),
244 ie = Args.filtered_end(); it != ie; ++it) {
245 const Arg *A = *it;
246 A->claim();
247 bool enable = (A->getOption().getID() == OPT_analyzer_checker);
248 // We can have a list of comma separated checker names, e.g:
249 // '-analyzer-checker=cocoa,unix'
250 StringRef checkerList = A->getValue();
251 SmallVector<StringRef, 4> checkers;
252 checkerList.split(checkers, ",");
253 for (unsigned i = 0, e = checkers.size(); i != e; ++i)
254 Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
255 }
256
257 // Go through the analyzer configuration options.
258 for (arg_iterator it = Args.filtered_begin(OPT_analyzer_config),
259 ie = Args.filtered_end(); it != ie; ++it) {
260 const Arg *A = *it;
261 A->claim();
262 // We can have a list of comma separated config names, e.g:
263 // '-analyzer-config key1=val1,key2=val2'
264 StringRef configList = A->getValue();
265 SmallVector<StringRef, 4> configVals;
266 configList.split(configVals, ",");
267 for (unsigned i = 0, e = configVals.size(); i != e; ++i) {
268 StringRef key, val;
269 std::tie(key, val) = configVals[i].split("=");
270 if (val.empty()) {
271 Diags.Report(SourceLocation(),
272 diag::err_analyzer_config_no_value) << configVals[i];
273 Success = false;
274 break;
275 }
276 if (val.find('=') != StringRef::npos) {
277 Diags.Report(SourceLocation(),
278 diag::err_analyzer_config_multiple_values)
279 << configVals[i];
280 Success = false;
281 break;
282 }
283 Opts.Config[key] = val;
284 }
285 }
286
287 return Success;
288 }
289
ParseMigratorArgs(MigratorOptions & Opts,ArgList & Args)290 static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
291 Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
292 Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
293 return true;
294 }
295
ParseCommentArgs(CommentOptions & Opts,ArgList & Args)296 static void ParseCommentArgs(CommentOptions &Opts, ArgList &Args) {
297 Opts.BlockCommandNames = Args.getAllArgValues(OPT_fcomment_block_commands);
298 Opts.ParseAllComments = Args.hasArg(OPT_fparse_all_comments);
299 }
300
getCodeModel(ArgList & Args,DiagnosticsEngine & Diags)301 static StringRef getCodeModel(ArgList &Args, DiagnosticsEngine &Diags) {
302 if (Arg *A = Args.getLastArg(OPT_mcode_model)) {
303 StringRef Value = A->getValue();
304 if (Value == "small" || Value == "kernel" || Value == "medium" ||
305 Value == "large")
306 return Value;
307 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Value;
308 }
309 return "default";
310 }
311
312 /// \brief Create a new Regex instance out of the string value in \p RpassArg.
313 /// It returns a pointer to the newly generated Regex instance.
314 static std::shared_ptr<llvm::Regex>
GenerateOptimizationRemarkRegex(DiagnosticsEngine & Diags,ArgList & Args,Arg * RpassArg)315 GenerateOptimizationRemarkRegex(DiagnosticsEngine &Diags, ArgList &Args,
316 Arg *RpassArg) {
317 StringRef Val = RpassArg->getValue();
318 std::string RegexError;
319 std::shared_ptr<llvm::Regex> Pattern = std::make_shared<llvm::Regex>(Val);
320 if (!Pattern->isValid(RegexError)) {
321 Diags.Report(diag::err_drv_optimization_remark_pattern)
322 << RegexError << RpassArg->getAsString(Args);
323 Pattern.reset();
324 }
325 return Pattern;
326 }
327
parseSanitizerKinds(StringRef FlagName,const std::vector<std::string> & Sanitizers,DiagnosticsEngine & Diags,SanitizerSet & S)328 static void parseSanitizerKinds(StringRef FlagName,
329 const std::vector<std::string> &Sanitizers,
330 DiagnosticsEngine &Diags, SanitizerSet &S) {
331 for (const auto &Sanitizer : Sanitizers) {
332 SanitizerKind K = llvm::StringSwitch<SanitizerKind>(Sanitizer)
333 #define SANITIZER(NAME, ID) .Case(NAME, SanitizerKind::ID)
334 #include "clang/Basic/Sanitizers.def"
335 .Default(SanitizerKind::Unknown);
336 if (K == SanitizerKind::Unknown)
337 Diags.Report(diag::err_drv_invalid_value) << FlagName << Sanitizer;
338 else
339 S.set(K, true);
340 }
341 }
342
ParseCodeGenArgs(CodeGenOptions & Opts,ArgList & Args,InputKind IK,DiagnosticsEngine & Diags,const TargetOptions & TargetOpts)343 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
344 DiagnosticsEngine &Diags,
345 const TargetOptions &TargetOpts) {
346 using namespace options;
347 bool Success = true;
348
349 unsigned OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
350 // TODO: This could be done in Driver
351 unsigned MaxOptLevel = 3;
352 if (OptimizationLevel > MaxOptLevel) {
353 // If the optimization level is not supported, fall back on the default
354 // optimization
355 Diags.Report(diag::warn_drv_optimization_value)
356 << Args.getLastArg(OPT_O)->getAsString(Args) << "-O" << MaxOptLevel;
357 OptimizationLevel = MaxOptLevel;
358 }
359 Opts.OptimizationLevel = OptimizationLevel;
360
361 // We must always run at least the always inlining pass.
362 Opts.setInlining(
363 (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
364 : CodeGenOptions::OnlyAlwaysInlining);
365 // -fno-inline-functions overrides OptimizationLevel > 1.
366 Opts.NoInline = Args.hasArg(OPT_fno_inline);
367 Opts.setInlining(Args.hasArg(OPT_fno_inline_functions) ?
368 CodeGenOptions::OnlyAlwaysInlining : Opts.getInlining());
369
370 if (Arg *A = Args.getLastArg(OPT_fveclib)) {
371 StringRef Name = A->getValue();
372 if (Name == "Accelerate")
373 Opts.setVecLib(CodeGenOptions::Accelerate);
374 else if (Name == "none")
375 Opts.setVecLib(CodeGenOptions::NoLibrary);
376 else
377 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
378 }
379
380 if (Args.hasArg(OPT_gline_tables_only)) {
381 Opts.setDebugInfo(CodeGenOptions::DebugLineTablesOnly);
382 } else if (Args.hasArg(OPT_g_Flag) || Args.hasArg(OPT_gdwarf_2) ||
383 Args.hasArg(OPT_gdwarf_3) || Args.hasArg(OPT_gdwarf_4)) {
384 bool Default = false;
385 // Until dtrace (via CTF) and LLDB can deal with distributed debug info,
386 // Darwin and FreeBSD default to standalone/full debug info.
387 if (llvm::Triple(TargetOpts.Triple).isOSDarwin() ||
388 llvm::Triple(TargetOpts.Triple).isOSFreeBSD())
389 Default = true;
390
391 if (Args.hasFlag(OPT_fstandalone_debug, OPT_fno_standalone_debug, Default))
392 Opts.setDebugInfo(CodeGenOptions::FullDebugInfo);
393 else
394 Opts.setDebugInfo(CodeGenOptions::LimitedDebugInfo);
395 }
396 Opts.DebugColumnInfo = Args.hasArg(OPT_dwarf_column_info);
397 Opts.SplitDwarfFile = Args.getLastArgValue(OPT_split_dwarf_file);
398 if (Args.hasArg(OPT_gdwarf_2))
399 Opts.DwarfVersion = 2;
400 else if (Args.hasArg(OPT_gdwarf_3))
401 Opts.DwarfVersion = 3;
402 else if (Args.hasArg(OPT_gdwarf_4))
403 Opts.DwarfVersion = 4;
404 else if (Opts.getDebugInfo() != CodeGenOptions::NoDebugInfo)
405 // Default Dwarf version is 4 if we are generating debug information.
406 Opts.DwarfVersion = 4;
407
408 if (const Arg *A =
409 Args.getLastArg(OPT_emit_llvm_uselists, OPT_no_emit_llvm_uselists))
410 Opts.EmitLLVMUseLists = A->getOption().getID() == OPT_emit_llvm_uselists;
411
412 Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
413 Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
414 Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
415 Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
416 OPT_fuse_register_sized_bitfield_access);
417 Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
418 Opts.StructPathTBAA = !Args.hasArg(OPT_no_struct_path_tbaa);
419 Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
420 Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
421 Opts.NoCommon = Args.hasArg(OPT_fno_common);
422 Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
423 Opts.OptimizeSize = getOptimizationLevelSize(Args);
424 Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
425 Args.hasArg(OPT_ffreestanding));
426 Opts.UnrollLoops =
427 Args.hasFlag(OPT_funroll_loops, OPT_fno_unroll_loops,
428 (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize));
429 Opts.RerollLoops = Args.hasArg(OPT_freroll_loops);
430
431 Opts.DisableIntegratedAS = Args.hasArg(OPT_fno_integrated_as);
432 Opts.Autolink = !Args.hasArg(OPT_fno_autolink);
433 Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
434 Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate);
435 Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ);
436 Opts.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping);
437 Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
438 Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
439 Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
440 Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
441 Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
442 Opts.CodeModel = getCodeModel(Args, Diags);
443 Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
444 Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
445 Opts.DisableFree = Args.hasArg(OPT_disable_free);
446 Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
447 Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
448 Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
449 Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
450 Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
451 Args.hasArg(OPT_cl_finite_math_only) ||
452 Args.hasArg(OPT_cl_fast_relaxed_math));
453 Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
454 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
455 Args.hasArg(OPT_cl_finite_math_only) ||
456 Args.hasArg(OPT_cl_fast_relaxed_math));
457 Opts.NoSignedZeros = Args.hasArg(OPT_fno_signed_zeros);
458 Opts.ReciprocalMath = Args.hasArg(OPT_freciprocal_math);
459 Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
460 Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
461 Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
462 Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
463 Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
464 Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
465 Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
466 Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
467 Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
468 Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
469 Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
470 Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
471 Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
472 Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
473 Args.hasArg(OPT_cl_fast_relaxed_math);
474 Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
475 Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
476 Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
477 if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
478 Diags.Report(diag::err_drv_invalid_value)
479 << Args.getLastArg(OPT_mthread_model)->getAsString(Args)
480 << Opts.ThreadModel;
481 Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
482 Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
483
484 Opts.FunctionSections = Args.hasFlag(OPT_ffunction_sections,
485 OPT_fno_function_sections, false);
486 Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
487 OPT_fno_data_sections, false);
488 Opts.UniqueSectionNames = Args.hasFlag(OPT_funique_section_names,
489 OPT_fno_unique_section_names, true);
490
491 Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
492
493 Opts.MSVolatile = Args.hasArg(OPT_fms_volatile);
494
495 Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
496 Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
497 Opts.VectorizeSLP = Args.hasArg(OPT_vectorize_slp);
498
499 Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
500 Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
501
502 Opts.DisableGCov = Args.hasArg(OPT_test_coverage);
503 Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
504 Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
505 if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
506 Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
507 Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
508 Opts.CoverageNoFunctionNamesInData =
509 Args.hasArg(OPT_coverage_no_function_names_in_data);
510 Opts.CoverageExitBlockBeforeBody =
511 Args.hasArg(OPT_coverage_exit_block_before_body);
512 if (Args.hasArg(OPT_coverage_version_EQ)) {
513 StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
514 if (CoverageVersion.size() != 4) {
515 Diags.Report(diag::err_drv_invalid_value)
516 << Args.getLastArg(OPT_coverage_version_EQ)->getAsString(Args)
517 << CoverageVersion;
518 } else {
519 memcpy(Opts.CoverageVersion, CoverageVersion.data(), 4);
520 }
521 }
522 }
523
524 Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
525 Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
526 Opts.EmitOpenCLArgMetadata = Args.hasArg(OPT_cl_kernel_arg_info);
527 Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
528 Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
529 Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
530 Opts.SanitizeCoverage =
531 getLastArgIntValue(Args, OPT_fsanitize_coverage, 0, Diags);
532 Opts.SanitizeMemoryTrackOrigins =
533 getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
534 Opts.SanitizeUndefinedTrapOnError =
535 Args.hasArg(OPT_fsanitize_undefined_trap_on_error);
536 Opts.SSPBufferSize =
537 getLastArgIntValue(Args, OPT_stack_protector_buffer_size, 8, Diags);
538 Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
539 if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
540 StringRef Val = A->getValue();
541 unsigned StackAlignment = Opts.StackAlignment;
542 Val.getAsInteger(10, StackAlignment);
543 Opts.StackAlignment = StackAlignment;
544 }
545
546 if (Arg *A = Args.getLastArg(OPT_mstack_probe_size)) {
547 StringRef Val = A->getValue();
548 unsigned StackProbeSize = Opts.StackProbeSize;
549 Val.getAsInteger(0, StackProbeSize);
550 Opts.StackProbeSize = StackProbeSize;
551 }
552
553 if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
554 StringRef Name = A->getValue();
555 unsigned Method = llvm::StringSwitch<unsigned>(Name)
556 .Case("legacy", CodeGenOptions::Legacy)
557 .Case("non-legacy", CodeGenOptions::NonLegacy)
558 .Case("mixed", CodeGenOptions::Mixed)
559 .Default(~0U);
560 if (Method == ~0U) {
561 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
562 Success = false;
563 } else {
564 Opts.setObjCDispatchMethod(
565 static_cast<CodeGenOptions::ObjCDispatchMethodKind>(Method));
566 }
567 }
568
569 if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
570 StringRef Name = A->getValue();
571 unsigned Model = llvm::StringSwitch<unsigned>(Name)
572 .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
573 .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
574 .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
575 .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
576 .Default(~0U);
577 if (Model == ~0U) {
578 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
579 Success = false;
580 } else {
581 Opts.setDefaultTLSModel(static_cast<CodeGenOptions::TLSModel>(Model));
582 }
583 }
584
585 if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
586 StringRef Val = A->getValue();
587 if (Val == "fast")
588 Opts.setFPContractMode(CodeGenOptions::FPC_Fast);
589 else if (Val == "on")
590 Opts.setFPContractMode(CodeGenOptions::FPC_On);
591 else if (Val == "off")
592 Opts.setFPContractMode(CodeGenOptions::FPC_Off);
593 else
594 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
595 }
596
597 if (Arg *A = Args.getLastArg(OPT_fpcc_struct_return, OPT_freg_struct_return)) {
598 if (A->getOption().matches(OPT_fpcc_struct_return)) {
599 Opts.setStructReturnConvention(CodeGenOptions::SRCK_OnStack);
600 } else {
601 assert(A->getOption().matches(OPT_freg_struct_return));
602 Opts.setStructReturnConvention(CodeGenOptions::SRCK_InRegs);
603 }
604 }
605
606 Opts.DependentLibraries = Args.getAllArgValues(OPT_dependent_lib);
607 bool NeedLocTracking = false;
608
609 if (Arg *A = Args.getLastArg(OPT_Rpass_EQ)) {
610 Opts.OptimizationRemarkPattern =
611 GenerateOptimizationRemarkRegex(Diags, Args, A);
612 NeedLocTracking = true;
613 }
614
615 if (Arg *A = Args.getLastArg(OPT_Rpass_missed_EQ)) {
616 Opts.OptimizationRemarkMissedPattern =
617 GenerateOptimizationRemarkRegex(Diags, Args, A);
618 NeedLocTracking = true;
619 }
620
621 if (Arg *A = Args.getLastArg(OPT_Rpass_analysis_EQ)) {
622 Opts.OptimizationRemarkAnalysisPattern =
623 GenerateOptimizationRemarkRegex(Diags, Args, A);
624 NeedLocTracking = true;
625 }
626
627 // If the user requested to use a sample profile for PGO, then the
628 // backend will need to track source location information so the profile
629 // can be incorporated into the IR.
630 if (!Opts.SampleProfileFile.empty())
631 NeedLocTracking = true;
632
633 // If the user requested a flag that requires source locations available in
634 // the backend, make sure that the backend tracks source location information.
635 if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo)
636 Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly);
637
638 Opts.RewriteMapFiles = Args.getAllArgValues(OPT_frewrite_map_file);
639
640 // Parse -fsanitize-recover= arguments.
641 // FIXME: Report unrecoverable sanitizers incorrectly specified here.
642 parseSanitizerKinds("-fsanitize-recover=",
643 Args.getAllArgValues(OPT_fsanitize_recover_EQ), Diags,
644 Opts.SanitizeRecover);
645
646 return Success;
647 }
648
ParseDependencyOutputArgs(DependencyOutputOptions & Opts,ArgList & Args)649 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
650 ArgList &Args) {
651 using namespace options;
652 Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
653 Opts.Targets = Args.getAllArgValues(OPT_MT);
654 Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
655 Opts.IncludeModuleFiles = Args.hasArg(OPT_module_file_deps);
656 Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
657 Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
658 Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
659 Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
660 Opts.PrintShowIncludes = Args.hasArg(OPT_show_includes);
661 Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
662 Opts.ModuleDependencyOutputDir =
663 Args.getLastArgValue(OPT_module_dependency_dir);
664 }
665
ParseDiagnosticArgs(DiagnosticOptions & Opts,ArgList & Args,DiagnosticsEngine * Diags)666 bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
667 DiagnosticsEngine *Diags) {
668 using namespace options;
669 bool Success = true;
670
671 Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
672 if (Arg *A =
673 Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
674 Opts.DiagnosticSerializationFile = A->getValue();
675 Opts.IgnoreWarnings = Args.hasArg(OPT_w);
676 Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
677 Opts.Pedantic = Args.hasArg(OPT_pedantic);
678 Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
679 Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
680 Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
681 Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
682 OPT_fno_show_column,
683 /*Default=*/true);
684 Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
685 Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
686 Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
687
688 llvm::sys::Process::UseANSIEscapeCodes(Args.hasArg(OPT_fansi_escape_codes));
689
690 // Default behavior is to not to show note include stacks.
691 Opts.ShowNoteIncludeStack = false;
692 if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
693 OPT_fno_diagnostics_show_note_include_stack))
694 if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
695 Opts.ShowNoteIncludeStack = true;
696
697 StringRef ShowOverloads =
698 Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
699 if (ShowOverloads == "best")
700 Opts.setShowOverloads(Ovl_Best);
701 else if (ShowOverloads == "all")
702 Opts.setShowOverloads(Ovl_All);
703 else {
704 Success = false;
705 if (Diags)
706 Diags->Report(diag::err_drv_invalid_value)
707 << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
708 << ShowOverloads;
709 }
710
711 StringRef ShowCategory =
712 Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
713 if (ShowCategory == "none")
714 Opts.ShowCategories = 0;
715 else if (ShowCategory == "id")
716 Opts.ShowCategories = 1;
717 else if (ShowCategory == "name")
718 Opts.ShowCategories = 2;
719 else {
720 Success = false;
721 if (Diags)
722 Diags->Report(diag::err_drv_invalid_value)
723 << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
724 << ShowCategory;
725 }
726
727 StringRef Format =
728 Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
729 if (Format == "clang")
730 Opts.setFormat(DiagnosticOptions::Clang);
731 else if (Format == "msvc")
732 Opts.setFormat(DiagnosticOptions::MSVC);
733 else if (Format == "msvc-fallback") {
734 Opts.setFormat(DiagnosticOptions::MSVC);
735 Opts.CLFallbackMode = true;
736 } else if (Format == "vi")
737 Opts.setFormat(DiagnosticOptions::Vi);
738 else {
739 Success = false;
740 if (Diags)
741 Diags->Report(diag::err_drv_invalid_value)
742 << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
743 << Format;
744 }
745
746 Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
747 Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
748 Opts.ShowPresumedLoc = !Args.hasArg(OPT_fno_diagnostics_use_presumed_location);
749 Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
750 Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
751 Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
752 Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
753 Opts.MacroBacktraceLimit =
754 getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
755 DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
756 Opts.TemplateBacktraceLimit = getLastArgIntValue(
757 Args, OPT_ftemplate_backtrace_limit,
758 DiagnosticOptions::DefaultTemplateBacktraceLimit, Diags);
759 Opts.ConstexprBacktraceLimit = getLastArgIntValue(
760 Args, OPT_fconstexpr_backtrace_limit,
761 DiagnosticOptions::DefaultConstexprBacktraceLimit, Diags);
762 Opts.SpellCheckingLimit = getLastArgIntValue(
763 Args, OPT_fspell_checking_limit,
764 DiagnosticOptions::DefaultSpellCheckingLimit, Diags);
765 Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
766 DiagnosticOptions::DefaultTabStop, Diags);
767 if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
768 Opts.TabStop = DiagnosticOptions::DefaultTabStop;
769 if (Diags)
770 Diags->Report(diag::warn_ignoring_ftabstop_value)
771 << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
772 }
773 Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
774 addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
775 addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
776
777 return Success;
778 }
779
ParseFileSystemArgs(FileSystemOptions & Opts,ArgList & Args)780 static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
781 Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
782 }
783
ParseFrontendArgs(FrontendOptions & Opts,ArgList & Args,DiagnosticsEngine & Diags)784 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
785 DiagnosticsEngine &Diags) {
786 using namespace options;
787 Opts.ProgramAction = frontend::ParseSyntaxOnly;
788 if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
789 switch (A->getOption().getID()) {
790 default:
791 llvm_unreachable("Invalid option in group!");
792 case OPT_ast_list:
793 Opts.ProgramAction = frontend::ASTDeclList; break;
794 case OPT_ast_dump:
795 case OPT_ast_dump_lookups:
796 Opts.ProgramAction = frontend::ASTDump; break;
797 case OPT_ast_print:
798 Opts.ProgramAction = frontend::ASTPrint; break;
799 case OPT_ast_view:
800 Opts.ProgramAction = frontend::ASTView; break;
801 case OPT_dump_raw_tokens:
802 Opts.ProgramAction = frontend::DumpRawTokens; break;
803 case OPT_dump_tokens:
804 Opts.ProgramAction = frontend::DumpTokens; break;
805 case OPT_S:
806 Opts.ProgramAction = frontend::EmitAssembly; break;
807 case OPT_emit_llvm_bc:
808 Opts.ProgramAction = frontend::EmitBC; break;
809 case OPT_emit_html:
810 Opts.ProgramAction = frontend::EmitHTML; break;
811 case OPT_emit_llvm:
812 Opts.ProgramAction = frontend::EmitLLVM; break;
813 case OPT_emit_llvm_only:
814 Opts.ProgramAction = frontend::EmitLLVMOnly; break;
815 case OPT_emit_codegen_only:
816 Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
817 case OPT_emit_obj:
818 Opts.ProgramAction = frontend::EmitObj; break;
819 case OPT_fixit_EQ:
820 Opts.FixItSuffix = A->getValue();
821 // fall-through!
822 case OPT_fixit:
823 Opts.ProgramAction = frontend::FixIt; break;
824 case OPT_emit_module:
825 Opts.ProgramAction = frontend::GenerateModule; break;
826 case OPT_emit_pch:
827 Opts.ProgramAction = frontend::GeneratePCH; break;
828 case OPT_emit_pth:
829 Opts.ProgramAction = frontend::GeneratePTH; break;
830 case OPT_init_only:
831 Opts.ProgramAction = frontend::InitOnly; break;
832 case OPT_fsyntax_only:
833 Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
834 case OPT_module_file_info:
835 Opts.ProgramAction = frontend::ModuleFileInfo; break;
836 case OPT_verify_pch:
837 Opts.ProgramAction = frontend::VerifyPCH; break;
838 case OPT_print_decl_contexts:
839 Opts.ProgramAction = frontend::PrintDeclContext; break;
840 case OPT_print_preamble:
841 Opts.ProgramAction = frontend::PrintPreamble; break;
842 case OPT_E:
843 Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
844 case OPT_rewrite_macros:
845 Opts.ProgramAction = frontend::RewriteMacros; break;
846 case OPT_rewrite_objc:
847 Opts.ProgramAction = frontend::RewriteObjC; break;
848 case OPT_rewrite_test:
849 Opts.ProgramAction = frontend::RewriteTest; break;
850 case OPT_analyze:
851 Opts.ProgramAction = frontend::RunAnalysis; break;
852 case OPT_migrate:
853 Opts.ProgramAction = frontend::MigrateSource; break;
854 case OPT_Eonly:
855 Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
856 }
857 }
858
859 if (const Arg* A = Args.getLastArg(OPT_plugin)) {
860 Opts.Plugins.push_back(A->getValue(0));
861 Opts.ProgramAction = frontend::PluginAction;
862 Opts.ActionName = A->getValue();
863
864 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
865 end = Args.filtered_end(); it != end; ++it) {
866 if ((*it)->getValue(0) == Opts.ActionName)
867 Opts.PluginArgs.push_back((*it)->getValue(1));
868 }
869 }
870
871 Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
872 Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
873 for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
874 for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
875 end = Args.filtered_end(); it != end; ++it) {
876 if ((*it)->getValue(0) == Opts.AddPluginActions[i])
877 Opts.AddPluginArgs[i].push_back((*it)->getValue(1));
878 }
879 }
880
881 if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
882 Opts.CodeCompletionAt =
883 ParsedSourceLocation::FromString(A->getValue());
884 if (Opts.CodeCompletionAt.FileName.empty())
885 Diags.Report(diag::err_drv_invalid_value)
886 << A->getAsString(Args) << A->getValue();
887 }
888 Opts.DisableFree = Args.hasArg(OPT_disable_free);
889
890 Opts.OutputFile = Args.getLastArgValue(OPT_o);
891 Opts.Plugins = Args.getAllArgValues(OPT_load);
892 Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
893 Opts.ShowHelp = Args.hasArg(OPT_help);
894 Opts.ShowStats = Args.hasArg(OPT_print_stats);
895 Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
896 Opts.ShowVersion = Args.hasArg(OPT_version);
897 Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
898 Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
899 Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
900 Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
901 Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
902 Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
903 Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
904 Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
905 Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
906 Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
907 Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
908 Opts.ModuleMapFiles = Args.getAllArgValues(OPT_fmodule_map_file);
909 Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
910
911 Opts.CodeCompleteOpts.IncludeMacros
912 = Args.hasArg(OPT_code_completion_macros);
913 Opts.CodeCompleteOpts.IncludeCodePatterns
914 = Args.hasArg(OPT_code_completion_patterns);
915 Opts.CodeCompleteOpts.IncludeGlobals
916 = !Args.hasArg(OPT_no_code_completion_globals);
917 Opts.CodeCompleteOpts.IncludeBriefComments
918 = Args.hasArg(OPT_code_completion_brief_comments);
919
920 Opts.OverrideRecordLayoutsFile
921 = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
922 if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
923 OPT_arcmt_modify,
924 OPT_arcmt_migrate)) {
925 switch (A->getOption().getID()) {
926 default:
927 llvm_unreachable("missed a case");
928 case OPT_arcmt_check:
929 Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
930 break;
931 case OPT_arcmt_modify:
932 Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
933 break;
934 case OPT_arcmt_migrate:
935 Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
936 break;
937 }
938 }
939 Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
940 Opts.ARCMTMigrateReportOut
941 = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
942 Opts.ARCMTMigrateEmitARCErrors
943 = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
944
945 if (Args.hasArg(OPT_objcmt_migrate_literals))
946 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
947 if (Args.hasArg(OPT_objcmt_migrate_subscripting))
948 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
949 if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
950 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
951 if (Args.hasArg(OPT_objcmt_migrate_property))
952 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
953 if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
954 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadonlyProperty;
955 if (Args.hasArg(OPT_objcmt_migrate_readwrite_property))
956 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReadwriteProperty;
957 if (Args.hasArg(OPT_objcmt_migrate_annotation))
958 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Annotation;
959 if (Args.hasArg(OPT_objcmt_returns_innerpointer_property))
960 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ReturnsInnerPointerProperty;
961 if (Args.hasArg(OPT_objcmt_migrate_instancetype))
962 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Instancetype;
963 if (Args.hasArg(OPT_objcmt_migrate_nsmacros))
964 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsMacros;
965 if (Args.hasArg(OPT_objcmt_migrate_protocol_conformance))
966 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_ProtocolConformance;
967 if (Args.hasArg(OPT_objcmt_atomic_property))
968 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_AtomicProperty;
969 if (Args.hasArg(OPT_objcmt_ns_nonatomic_iosonly))
970 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_NsAtomicIOSOnlyProperty;
971 if (Args.hasArg(OPT_objcmt_migrate_designated_init))
972 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_DesignatedInitializer;
973 if (Args.hasArg(OPT_objcmt_migrate_all))
974 Opts.ObjCMTAction |= FrontendOptions::ObjCMT_MigrateDecls;
975
976 Opts.ObjCMTWhiteListPath = Args.getLastArgValue(OPT_objcmt_whitelist_dir_path);
977
978 if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
979 Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
980 Diags.Report(diag::err_drv_argument_not_allowed_with)
981 << "ARC migration" << "ObjC migration";
982 }
983
984 InputKind DashX = IK_None;
985 if (const Arg *A = Args.getLastArg(OPT_x)) {
986 DashX = llvm::StringSwitch<InputKind>(A->getValue())
987 .Case("c", IK_C)
988 .Case("cl", IK_OpenCL)
989 .Case("cuda", IK_CUDA)
990 .Case("c++", IK_CXX)
991 .Case("objective-c", IK_ObjC)
992 .Case("objective-c++", IK_ObjCXX)
993 .Case("cpp-output", IK_PreprocessedC)
994 .Case("assembler-with-cpp", IK_Asm)
995 .Case("c++-cpp-output", IK_PreprocessedCXX)
996 .Case("cuda-cpp-output", IK_PreprocessedCuda)
997 .Case("objective-c-cpp-output", IK_PreprocessedObjC)
998 .Case("objc-cpp-output", IK_PreprocessedObjC)
999 .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1000 .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
1001 .Case("c-header", IK_C)
1002 .Case("cl-header", IK_OpenCL)
1003 .Case("objective-c-header", IK_ObjC)
1004 .Case("c++-header", IK_CXX)
1005 .Case("objective-c++-header", IK_ObjCXX)
1006 .Cases("ast", "pcm", IK_AST)
1007 .Case("ir", IK_LLVM_IR)
1008 .Default(IK_None);
1009 if (DashX == IK_None)
1010 Diags.Report(diag::err_drv_invalid_value)
1011 << A->getAsString(Args) << A->getValue();
1012 }
1013
1014 // '-' is the default input if none is given.
1015 std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1016 Opts.Inputs.clear();
1017 if (Inputs.empty())
1018 Inputs.push_back("-");
1019 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1020 InputKind IK = DashX;
1021 if (IK == IK_None) {
1022 IK = FrontendOptions::getInputKindForExtension(
1023 StringRef(Inputs[i]).rsplit('.').second);
1024 // FIXME: Remove this hack.
1025 if (i == 0)
1026 DashX = IK;
1027 }
1028 Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
1029 }
1030
1031 return DashX;
1032 }
1033
GetResourcesPath(const char * Argv0,void * MainAddr)1034 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1035 void *MainAddr) {
1036 std::string ClangExecutable =
1037 llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
1038 StringRef Dir = llvm::sys::path::parent_path(ClangExecutable);
1039
1040 // Compute the path to the resource directory.
1041 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
1042 SmallString<128> P(Dir);
1043 if (ClangResourceDir != "") {
1044 llvm::sys::path::append(P, ClangResourceDir);
1045 } else {
1046 StringRef ClangLibdirSuffix(CLANG_LIBDIR_SUFFIX);
1047 llvm::sys::path::append(P, "..", Twine("lib") + ClangLibdirSuffix, "clang",
1048 CLANG_VERSION_STRING);
1049 }
1050
1051 return P.str();
1052 }
1053
ParseHeaderSearchArgs(HeaderSearchOptions & Opts,ArgList & Args)1054 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1055 using namespace options;
1056 Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1057 Opts.Verbose = Args.hasArg(OPT_v);
1058 Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1059 Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1060 Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1061 if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1062 Opts.UseLibcxx = (strcmp(A->getValue(), "libc++") == 0);
1063 Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1064 Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodules_cache_path);
1065 Opts.ModuleUserBuildPath = Args.getLastArgValue(OPT_fmodules_user_build_path);
1066 Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1067 // -fmodules implies -fmodule-maps
1068 Opts.ModuleMaps = Args.hasArg(OPT_fmodule_maps) || Args.hasArg(OPT_fmodules);
1069 Opts.ModuleMapFileHomeIsCwd = Args.hasArg(OPT_fmodule_map_file_home_is_cwd);
1070 Opts.ModuleCachePruneInterval =
1071 getLastArgIntValue(Args, OPT_fmodules_prune_interval, 7 * 24 * 60 * 60);
1072 Opts.ModuleCachePruneAfter =
1073 getLastArgIntValue(Args, OPT_fmodules_prune_after, 31 * 24 * 60 * 60);
1074 Opts.ModulesValidateOncePerBuildSession =
1075 Args.hasArg(OPT_fmodules_validate_once_per_build_session);
1076 Opts.BuildSessionTimestamp =
1077 getLastArgUInt64Value(Args, OPT_fbuild_session_timestamp, 0);
1078 Opts.ModulesValidateSystemHeaders =
1079 Args.hasArg(OPT_fmodules_validate_system_headers);
1080
1081 for (arg_iterator it = Args.filtered_begin(OPT_fmodules_ignore_macro),
1082 ie = Args.filtered_end();
1083 it != ie; ++it) {
1084 StringRef MacroDef = (*it)->getValue();
1085 Opts.ModulesIgnoreMacros.insert(MacroDef.split('=').first);
1086 }
1087
1088 // Add -I..., -F..., and -index-header-map options in order.
1089 bool IsIndexHeaderMap = false;
1090 for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1091 OPT_index_header_map),
1092 ie = Args.filtered_end(); it != ie; ++it) {
1093 if ((*it)->getOption().matches(OPT_index_header_map)) {
1094 // -index-header-map applies to the next -I or -F.
1095 IsIndexHeaderMap = true;
1096 continue;
1097 }
1098
1099 frontend::IncludeDirGroup Group
1100 = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1101
1102 Opts.AddPath((*it)->getValue(), Group,
1103 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1104 IsIndexHeaderMap = false;
1105 }
1106
1107 // Add -iprefix/-iwithprefix/-iwithprefixbefore options.
1108 StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1109 for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1110 OPT_iwithprefixbefore),
1111 ie = Args.filtered_end(); it != ie; ++it) {
1112 const Arg *A = *it;
1113 if (A->getOption().matches(OPT_iprefix))
1114 Prefix = A->getValue();
1115 else if (A->getOption().matches(OPT_iwithprefix))
1116 Opts.AddPath(Prefix.str() + A->getValue(),
1117 frontend::After, false, true);
1118 else
1119 Opts.AddPath(Prefix.str() + A->getValue(),
1120 frontend::Angled, false, true);
1121 }
1122
1123 for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1124 ie = Args.filtered_end(); it != ie; ++it)
1125 Opts.AddPath((*it)->getValue(), frontend::After, false, true);
1126 for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1127 ie = Args.filtered_end(); it != ie; ++it)
1128 Opts.AddPath((*it)->getValue(), frontend::Quoted, false, true);
1129 for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1130 OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1131 Opts.AddPath((*it)->getValue(), frontend::System, false,
1132 !(*it)->getOption().matches(OPT_iwithsysroot));
1133 for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1134 ie = Args.filtered_end(); it != ie; ++it)
1135 Opts.AddPath((*it)->getValue(), frontend::System, true, true);
1136
1137 // Add the paths for the various language specific isystem flags.
1138 for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1139 ie = Args.filtered_end(); it != ie; ++it)
1140 Opts.AddPath((*it)->getValue(), frontend::CSystem, false, true);
1141 for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1142 ie = Args.filtered_end(); it != ie; ++it)
1143 Opts.AddPath((*it)->getValue(), frontend::CXXSystem, false, true);
1144 for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1145 ie = Args.filtered_end(); it != ie; ++it)
1146 Opts.AddPath((*it)->getValue(), frontend::ObjCSystem, false,true);
1147 for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1148 ie = Args.filtered_end(); it != ie; ++it)
1149 Opts.AddPath((*it)->getValue(), frontend::ObjCXXSystem, false, true);
1150
1151 // Add the internal paths from a driver that detects standard include paths.
1152 for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1153 OPT_internal_externc_isystem),
1154 E = Args.filtered_end();
1155 I != E; ++I) {
1156 frontend::IncludeDirGroup Group = frontend::System;
1157 if ((*I)->getOption().matches(OPT_internal_externc_isystem))
1158 Group = frontend::ExternCSystem;
1159 Opts.AddPath((*I)->getValue(), Group, false, true);
1160 }
1161
1162 // Add the path prefixes which are implicitly treated as being system headers.
1163 for (arg_iterator I = Args.filtered_begin(OPT_system_header_prefix,
1164 OPT_no_system_header_prefix),
1165 E = Args.filtered_end();
1166 I != E; ++I)
1167 Opts.AddSystemHeaderPrefix(
1168 (*I)->getValue(), (*I)->getOption().matches(OPT_system_header_prefix));
1169
1170 for (arg_iterator I = Args.filtered_begin(OPT_ivfsoverlay),
1171 E = Args.filtered_end(); I != E; ++I)
1172 Opts.AddVFSOverlayFile((*I)->getValue());
1173 }
1174
setLangDefaults(LangOptions & Opts,InputKind IK,LangStandard::Kind LangStd)1175 void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1176 LangStandard::Kind LangStd) {
1177 // Set some properties which depend solely on the input kind; it would be nice
1178 // to move these to the language standard, and have the driver resolve the
1179 // input kind + language standard.
1180 if (IK == IK_Asm) {
1181 Opts.AsmPreprocessor = 1;
1182 } else if (IK == IK_ObjC ||
1183 IK == IK_ObjCXX ||
1184 IK == IK_PreprocessedObjC ||
1185 IK == IK_PreprocessedObjCXX) {
1186 Opts.ObjC1 = Opts.ObjC2 = 1;
1187 }
1188
1189 if (LangStd == LangStandard::lang_unspecified) {
1190 // Based on the base language, pick one.
1191 switch (IK) {
1192 case IK_None:
1193 case IK_AST:
1194 case IK_LLVM_IR:
1195 llvm_unreachable("Invalid input kind!");
1196 case IK_OpenCL:
1197 LangStd = LangStandard::lang_opencl;
1198 break;
1199 case IK_CUDA:
1200 case IK_PreprocessedCuda:
1201 LangStd = LangStandard::lang_cuda;
1202 break;
1203 case IK_Asm:
1204 case IK_C:
1205 case IK_PreprocessedC:
1206 case IK_ObjC:
1207 case IK_PreprocessedObjC:
1208 LangStd = LangStandard::lang_gnu11;
1209 break;
1210 case IK_CXX:
1211 case IK_PreprocessedCXX:
1212 case IK_ObjCXX:
1213 case IK_PreprocessedObjCXX:
1214 LangStd = LangStandard::lang_gnucxx98;
1215 break;
1216 }
1217 }
1218
1219 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1220 Opts.LineComment = Std.hasLineComments();
1221 Opts.C99 = Std.isC99();
1222 Opts.C11 = Std.isC11();
1223 Opts.CPlusPlus = Std.isCPlusPlus();
1224 Opts.CPlusPlus11 = Std.isCPlusPlus11();
1225 Opts.CPlusPlus14 = Std.isCPlusPlus14();
1226 Opts.CPlusPlus1z = Std.isCPlusPlus1z();
1227 Opts.Digraphs = Std.hasDigraphs();
1228 Opts.GNUMode = Std.isGNUMode();
1229 Opts.GNUInline = !Std.isC99();
1230 Opts.HexFloats = Std.hasHexFloats();
1231 Opts.ImplicitInt = Std.hasImplicitInt();
1232
1233 // Set OpenCL Version.
1234 Opts.OpenCL = LangStd == LangStandard::lang_opencl || IK == IK_OpenCL;
1235 if (LangStd == LangStandard::lang_opencl)
1236 Opts.OpenCLVersion = 100;
1237 else if (LangStd == LangStandard::lang_opencl11)
1238 Opts.OpenCLVersion = 110;
1239 else if (LangStd == LangStandard::lang_opencl12)
1240 Opts.OpenCLVersion = 120;
1241 else if (LangStd == LangStandard::lang_opencl20)
1242 Opts.OpenCLVersion = 200;
1243
1244 // OpenCL has some additional defaults.
1245 if (Opts.OpenCL) {
1246 Opts.AltiVec = 0;
1247 Opts.CXXOperatorNames = 1;
1248 Opts.LaxVectorConversions = 0;
1249 Opts.DefaultFPContract = 1;
1250 Opts.NativeHalfType = 1;
1251 }
1252
1253 Opts.CUDA = IK == IK_CUDA || IK == IK_PreprocessedCuda ||
1254 LangStd == LangStandard::lang_cuda;
1255
1256 // OpenCL and C++ both have bool, true, false keywords.
1257 Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1258
1259 // OpenCL has half keyword
1260 Opts.Half = Opts.OpenCL;
1261
1262 // C++ has wchar_t keyword.
1263 Opts.WChar = Opts.CPlusPlus;
1264
1265 Opts.GNUKeywords = Opts.GNUMode;
1266 Opts.CXXOperatorNames = Opts.CPlusPlus;
1267
1268 Opts.DollarIdents = !Opts.AsmPreprocessor;
1269 }
1270
1271 /// Attempt to parse a visibility value out of the given argument.
parseVisibility(Arg * arg,ArgList & args,DiagnosticsEngine & diags)1272 static Visibility parseVisibility(Arg *arg, ArgList &args,
1273 DiagnosticsEngine &diags) {
1274 StringRef value = arg->getValue();
1275 if (value == "default") {
1276 return DefaultVisibility;
1277 } else if (value == "hidden") {
1278 return HiddenVisibility;
1279 } else if (value == "protected") {
1280 // FIXME: diagnose if target does not support protected visibility
1281 return ProtectedVisibility;
1282 }
1283
1284 diags.Report(diag::err_drv_invalid_value)
1285 << arg->getAsString(args) << value;
1286 return DefaultVisibility;
1287 }
1288
ParseLangArgs(LangOptions & Opts,ArgList & Args,InputKind IK,DiagnosticsEngine & Diags)1289 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1290 DiagnosticsEngine &Diags) {
1291 // FIXME: Cleanup per-file based stuff.
1292 LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1293 if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1294 LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1295 #define LANGSTANDARD(id, name, desc, features) \
1296 .Case(name, LangStandard::lang_##id)
1297 #include "clang/Frontend/LangStandards.def"
1298 .Default(LangStandard::lang_unspecified);
1299 if (LangStd == LangStandard::lang_unspecified)
1300 Diags.Report(diag::err_drv_invalid_value)
1301 << A->getAsString(Args) << A->getValue();
1302 else {
1303 // Valid standard, check to make sure language and standard are
1304 // compatible.
1305 const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1306 switch (IK) {
1307 case IK_C:
1308 case IK_ObjC:
1309 case IK_PreprocessedC:
1310 case IK_PreprocessedObjC:
1311 if (!(Std.isC89() || Std.isC99()))
1312 Diags.Report(diag::err_drv_argument_not_allowed_with)
1313 << A->getAsString(Args) << "C/ObjC";
1314 break;
1315 case IK_CXX:
1316 case IK_ObjCXX:
1317 case IK_PreprocessedCXX:
1318 case IK_PreprocessedObjCXX:
1319 if (!Std.isCPlusPlus())
1320 Diags.Report(diag::err_drv_argument_not_allowed_with)
1321 << A->getAsString(Args) << "C++/ObjC++";
1322 break;
1323 case IK_OpenCL:
1324 if (!Std.isC99())
1325 Diags.Report(diag::err_drv_argument_not_allowed_with)
1326 << A->getAsString(Args) << "OpenCL";
1327 break;
1328 case IK_CUDA:
1329 case IK_PreprocessedCuda:
1330 if (!Std.isCPlusPlus())
1331 Diags.Report(diag::err_drv_argument_not_allowed_with)
1332 << A->getAsString(Args) << "CUDA";
1333 break;
1334 default:
1335 break;
1336 }
1337 }
1338 }
1339
1340 // -cl-std only applies for OpenCL language standards.
1341 // Override the -std option in this case.
1342 if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1343 LangStandard::Kind OpenCLLangStd
1344 = llvm::StringSwitch<LangStandard::Kind>(A->getValue())
1345 .Case("CL", LangStandard::lang_opencl)
1346 .Case("CL1.1", LangStandard::lang_opencl11)
1347 .Case("CL1.2", LangStandard::lang_opencl12)
1348 .Case("CL2.0", LangStandard::lang_opencl20)
1349 .Default(LangStandard::lang_unspecified);
1350
1351 if (OpenCLLangStd == LangStandard::lang_unspecified) {
1352 Diags.Report(diag::err_drv_invalid_value)
1353 << A->getAsString(Args) << A->getValue();
1354 }
1355 else
1356 LangStd = OpenCLLangStd;
1357 }
1358
1359 CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1360
1361 // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1362 // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1363 // while a subset (the non-C++ GNU keywords) is provided by GCC's
1364 // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1365 // name, as it doesn't seem a useful distinction.
1366 Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1367 Opts.GNUKeywords);
1368
1369 if (Args.hasArg(OPT_fno_operator_names))
1370 Opts.CXXOperatorNames = 0;
1371
1372 if (Args.hasArg(OPT_fcuda_is_device))
1373 Opts.CUDAIsDevice = 1;
1374
1375 if (Args.hasArg(OPT_fcuda_allow_host_calls_from_host_device))
1376 Opts.CUDAAllowHostCallsFromHostDevice = 1;
1377
1378 if (Args.hasArg(OPT_fcuda_disable_target_call_checks))
1379 Opts.CUDADisableTargetCallChecks = 1;
1380
1381 if (Opts.ObjC1) {
1382 if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1383 StringRef value = arg->getValue();
1384 if (Opts.ObjCRuntime.tryParse(value))
1385 Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1386 }
1387
1388 if (Args.hasArg(OPT_fobjc_gc_only))
1389 Opts.setGC(LangOptions::GCOnly);
1390 else if (Args.hasArg(OPT_fobjc_gc))
1391 Opts.setGC(LangOptions::HybridGC);
1392 else if (Args.hasArg(OPT_fobjc_arc)) {
1393 Opts.ObjCAutoRefCount = 1;
1394 if (!Opts.ObjCRuntime.allowsARC())
1395 Diags.Report(diag::err_arc_unsupported_on_runtime);
1396
1397 // Only set ObjCARCWeak if ARC is enabled.
1398 if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1399 Opts.ObjCARCWeak = 1;
1400 else
1401 Opts.ObjCARCWeak = Opts.ObjCRuntime.allowsWeak();
1402 }
1403
1404 if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1405 Opts.ObjCInferRelatedResultType = 0;
1406
1407 if (Args.hasArg(OPT_fobjc_subscripting_legacy_runtime))
1408 Opts.ObjCSubscriptingLegacyRuntime =
1409 (Opts.ObjCRuntime.getKind() == ObjCRuntime::FragileMacOSX);
1410 }
1411
1412 if (Args.hasArg(OPT_fgnu89_inline))
1413 Opts.GNUInline = 1;
1414
1415 if (Args.hasArg(OPT_fapple_kext)) {
1416 if (!Opts.CPlusPlus)
1417 Diags.Report(diag::warn_c_kext);
1418 else
1419 Opts.AppleKext = 1;
1420 }
1421
1422 if (Args.hasArg(OPT_print_ivar_layout))
1423 Opts.ObjCGCBitmapPrint = 1;
1424 if (Args.hasArg(OPT_fno_constant_cfstrings))
1425 Opts.NoConstantCFStrings = 1;
1426
1427 if (Args.hasArg(OPT_faltivec))
1428 Opts.AltiVec = 1;
1429
1430 if (Args.hasArg(OPT_pthread))
1431 Opts.POSIXThreads = 1;
1432
1433 // The value-visibility mode defaults to "default".
1434 if (Arg *visOpt = Args.getLastArg(OPT_fvisibility)) {
1435 Opts.setValueVisibilityMode(parseVisibility(visOpt, Args, Diags));
1436 } else {
1437 Opts.setValueVisibilityMode(DefaultVisibility);
1438 }
1439
1440 // The type-visibility mode defaults to the value-visibility mode.
1441 if (Arg *typeVisOpt = Args.getLastArg(OPT_ftype_visibility)) {
1442 Opts.setTypeVisibilityMode(parseVisibility(typeVisOpt, Args, Diags));
1443 } else {
1444 Opts.setTypeVisibilityMode(Opts.getValueVisibilityMode());
1445 }
1446
1447 if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1448 Opts.InlineVisibilityHidden = 1;
1449
1450 if (Args.hasArg(OPT_ftrapv)) {
1451 Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1452 // Set the handler, if one is specified.
1453 Opts.OverflowHandler =
1454 Args.getLastArgValue(OPT_ftrapv_handler);
1455 }
1456 else if (Args.hasArg(OPT_fwrapv))
1457 Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1458
1459 Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
1460 Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
1461 Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
1462 Opts.MSCompatibilityVersion = 0;
1463 if (const Arg *A = Args.getLastArg(OPT_fms_compatibility_version)) {
1464 VersionTuple VT;
1465 if (VT.tryParse(A->getValue()))
1466 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args)
1467 << A->getValue();
1468 Opts.MSCompatibilityVersion = VT.getMajor() * 10000000 +
1469 VT.getMinor().getValueOr(0) * 100000 +
1470 VT.getSubminor().getValueOr(0);
1471 }
1472
1473 // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1474 // is specified, or -std is set to a conforming mode.
1475 // Trigraphs are disabled by default in c++1z onwards.
1476 Opts.Trigraphs = !Opts.GNUMode && !Opts.MSVCCompat && !Opts.CPlusPlus1z;
1477 Opts.Trigraphs =
1478 Args.hasFlag(OPT_ftrigraphs, OPT_fno_trigraphs, Opts.Trigraphs);
1479
1480 Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1481 OPT_fno_dollars_in_identifiers,
1482 Opts.DollarIdents);
1483 Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1484 Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
1485 Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1486 Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1487 Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1488 Opts.ConstStrings);
1489 if (Args.hasArg(OPT_fno_lax_vector_conversions))
1490 Opts.LaxVectorConversions = 0;
1491 if (Args.hasArg(OPT_fno_threadsafe_statics))
1492 Opts.ThreadsafeStatics = 0;
1493 Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1494 Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1495 Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1496 Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1497 Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1498
1499 Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1500 Opts.RTTIData = Opts.RTTI && !Args.hasArg(OPT_fno_rtti_data);
1501 Opts.Blocks = Args.hasArg(OPT_fblocks);
1502 Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1503 Opts.Modules = Args.hasArg(OPT_fmodules);
1504 Opts.ModulesStrictDeclUse = Args.hasArg(OPT_fmodules_strict_decluse);
1505 Opts.ModulesDeclUse =
1506 Args.hasArg(OPT_fmodules_decluse) || Opts.ModulesStrictDeclUse;
1507 Opts.ModulesSearchAll = Opts.Modules &&
1508 !Args.hasArg(OPT_fno_modules_search_all) &&
1509 Args.hasArg(OPT_fmodules_search_all);
1510 Opts.ModulesErrorRecovery = !Args.hasArg(OPT_fno_modules_error_recovery);
1511 Opts.ModulesImplicitMaps = Args.hasFlag(OPT_fmodules_implicit_maps,
1512 OPT_fno_modules_implicit_maps, true);
1513 Opts.ImplicitModules = !Args.hasArg(OPT_fno_implicit_modules);
1514 Opts.CharIsSigned = Opts.OpenCL || !Args.hasArg(OPT_fno_signed_char);
1515 Opts.WChar = Opts.CPlusPlus && !Args.hasArg(OPT_fno_wchar);
1516 Opts.ShortWChar = Args.hasFlag(OPT_fshort_wchar, OPT_fno_short_wchar, false);
1517 Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1518 Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1519 Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1520 Opts.NoMathBuiltin = Args.hasArg(OPT_fno_math_builtin);
1521 Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1522 Opts.SizedDeallocation = Args.hasArg(OPT_fsized_deallocation);
1523 Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1524 Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1525 Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1526 Opts.MathErrno = !Opts.OpenCL && Args.hasArg(OPT_fmath_errno);
1527 Opts.InstantiationDepth =
1528 getLastArgIntValue(Args, OPT_ftemplate_depth, 256, Diags);
1529 Opts.ArrowDepth =
1530 getLastArgIntValue(Args, OPT_foperator_arrow_depth, 256, Diags);
1531 Opts.ConstexprCallDepth =
1532 getLastArgIntValue(Args, OPT_fconstexpr_depth, 512, Diags);
1533 Opts.ConstexprStepLimit =
1534 getLastArgIntValue(Args, OPT_fconstexpr_steps, 1048576, Diags);
1535 Opts.BracketDepth = getLastArgIntValue(Args, OPT_fbracket_depth, 256, Diags);
1536 Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1537 Opts.NumLargeByValueCopy =
1538 getLastArgIntValue(Args, OPT_Wlarge_by_value_copy_EQ, 0, Diags);
1539 Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1540 Opts.ObjCConstantStringClass =
1541 Args.getLastArgValue(OPT_fconstant_string_class);
1542 Opts.ObjCDefaultSynthProperties =
1543 !Args.hasArg(OPT_disable_objc_default_synthesize_properties);
1544 Opts.EncodeExtendedBlockSig =
1545 Args.hasArg(OPT_fencode_extended_block_signature);
1546 Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1547 Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
1548 Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
1549 Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1550 Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags);
1551 Opts.Static = Args.hasArg(OPT_static_define);
1552 Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1553 Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
1554 || Args.hasArg(OPT_fdump_record_layouts);
1555 Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1556 Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1557 Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1558 Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1559 Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1560 Opts.MRTD = Args.hasArg(OPT_mrtd);
1561 Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1562 Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1563 Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1564 Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1565 Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
1566 Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
1567 Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1568 Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1569 Opts.AppExt = Args.hasArg(OPT_fapplication_extension);
1570 Opts.ImplementationOfModule =
1571 Args.getLastArgValue(OPT_fmodule_implementation_of);
1572 Opts.ModuleFeatures = Args.getAllArgValues(OPT_fmodule_feature);
1573 Opts.NativeHalfType |= Args.hasArg(OPT_fnative_half_type);
1574 Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns);
1575 Opts.GNUAsm = !Args.hasArg(OPT_fno_gnu_inline_asm);
1576
1577 if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() &&
1578 Opts.CurrentModule != Opts.ImplementationOfModule) {
1579 Diags.Report(diag::err_conflicting_module_names)
1580 << Opts.CurrentModule << Opts.ImplementationOfModule;
1581 }
1582
1583 if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
1584 switch (llvm::StringSwitch<unsigned>(A->getValue())
1585 .Case("target", LangOptions::ASMM_Target)
1586 .Case("no", LangOptions::ASMM_Off)
1587 .Case("yes", LangOptions::ASMM_On)
1588 .Default(255)) {
1589 default:
1590 Diags.Report(diag::err_drv_invalid_value)
1591 << "-faddress-space-map-mangling=" << A->getValue();
1592 break;
1593 case LangOptions::ASMM_Target:
1594 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Target);
1595 break;
1596 case LangOptions::ASMM_On:
1597 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_On);
1598 break;
1599 case LangOptions::ASMM_Off:
1600 Opts.setAddressSpaceMapMangling(LangOptions::ASMM_Off);
1601 break;
1602 }
1603 }
1604
1605 if (Arg *A = Args.getLastArg(OPT_fms_memptr_rep_EQ)) {
1606 LangOptions::PragmaMSPointersToMembersKind InheritanceModel =
1607 llvm::StringSwitch<LangOptions::PragmaMSPointersToMembersKind>(
1608 A->getValue())
1609 .Case("single",
1610 LangOptions::PPTMK_FullGeneralitySingleInheritance)
1611 .Case("multiple",
1612 LangOptions::PPTMK_FullGeneralityMultipleInheritance)
1613 .Case("virtual",
1614 LangOptions::PPTMK_FullGeneralityVirtualInheritance)
1615 .Default(LangOptions::PPTMK_BestCase);
1616 if (InheritanceModel == LangOptions::PPTMK_BestCase)
1617 Diags.Report(diag::err_drv_invalid_value)
1618 << "-fms-memptr-rep=" << A->getValue();
1619
1620 Opts.setMSPointerToMemberRepresentationMethod(InheritanceModel);
1621 }
1622
1623 // Check if -fopenmp= is specified.
1624 if (const Arg *A = Args.getLastArg(options::OPT_fopenmp_EQ)) {
1625 Opts.OpenMP = llvm::StringSwitch<bool>(A->getValue())
1626 .Case("libiomp5", true)
1627 .Default(false);
1628 }
1629
1630 // Record whether the __DEPRECATED define was requested.
1631 Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1632 OPT_fno_deprecated_macro,
1633 Opts.Deprecated);
1634
1635 // FIXME: Eliminate this dependency.
1636 unsigned Opt = getOptimizationLevel(Args, IK, Diags),
1637 OptSize = getOptimizationLevelSize(Args);
1638 Opts.Optimize = Opt != 0;
1639 Opts.OptimizeSize = OptSize != 0;
1640
1641 // This is the __NO_INLINE__ define, which just depends on things like the
1642 // optimization level and -fno-inline, not actually whether the backend has
1643 // inlining enabled.
1644 Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
1645
1646 Opts.FastMath = Args.hasArg(OPT_ffast_math) ||
1647 Args.hasArg(OPT_cl_fast_relaxed_math);
1648 Opts.FiniteMathOnly = Args.hasArg(OPT_ffinite_math_only) ||
1649 Args.hasArg(OPT_cl_finite_math_only) ||
1650 Args.hasArg(OPT_cl_fast_relaxed_math);
1651
1652 Opts.RetainCommentsFromSystemHeaders =
1653 Args.hasArg(OPT_fretain_comments_from_system_headers);
1654
1655 unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1656 switch (SSP) {
1657 default:
1658 Diags.Report(diag::err_drv_invalid_value)
1659 << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1660 break;
1661 case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1662 case 1: Opts.setStackProtector(LangOptions::SSPOn); break;
1663 case 2: Opts.setStackProtector(LangOptions::SSPStrong); break;
1664 case 3: Opts.setStackProtector(LangOptions::SSPReq); break;
1665 }
1666
1667 // Parse -fsanitize= arguments.
1668 parseSanitizerKinds("-fsanitize=", Args.getAllArgValues(OPT_fsanitize_EQ),
1669 Diags, Opts.Sanitize);
1670 // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
1671 Opts.SanitizeAddressFieldPadding =
1672 getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
1673 Opts.SanitizerBlacklistFiles = Args.getAllArgValues(OPT_fsanitize_blacklist);
1674 }
1675
ParsePreprocessorArgs(PreprocessorOptions & Opts,ArgList & Args,FileManager & FileMgr,DiagnosticsEngine & Diags)1676 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1677 FileManager &FileMgr,
1678 DiagnosticsEngine &Diags) {
1679 using namespace options;
1680 Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1681 Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1682 if (const Arg *A = Args.getLastArg(OPT_token_cache))
1683 Opts.TokenCache = A->getValue();
1684 else
1685 Opts.TokenCache = Opts.ImplicitPTHInclude;
1686 Opts.UsePredefines = !Args.hasArg(OPT_undef);
1687 Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1688 Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1689
1690 Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1691 for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1692 ie = Args.filtered_end(); it != ie; ++it) {
1693 const Arg *A = *it;
1694 Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue());
1695 }
1696
1697 if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1698 StringRef Value(A->getValue());
1699 size_t Comma = Value.find(',');
1700 unsigned Bytes = 0;
1701 unsigned EndOfLine = 0;
1702
1703 if (Comma == StringRef::npos ||
1704 Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1705 Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1706 Diags.Report(diag::err_drv_preamble_format);
1707 else {
1708 Opts.PrecompiledPreambleBytes.first = Bytes;
1709 Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1710 }
1711 }
1712
1713 // Add macros from the command line.
1714 for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1715 ie = Args.filtered_end(); it != ie; ++it) {
1716 if ((*it)->getOption().matches(OPT_D))
1717 Opts.addMacroDef((*it)->getValue());
1718 else
1719 Opts.addMacroUndef((*it)->getValue());
1720 }
1721
1722 Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1723
1724 // Add the ordered list of -includes.
1725 for (arg_iterator it = Args.filtered_begin(OPT_include),
1726 ie = Args.filtered_end(); it != ie; ++it) {
1727 const Arg *A = *it;
1728 Opts.Includes.push_back(A->getValue());
1729 }
1730
1731 for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1732 ie = Args.filtered_end(); it != ie; ++it) {
1733 const Arg *A = *it;
1734 Opts.ChainedIncludes.push_back(A->getValue());
1735 }
1736
1737 // Include 'altivec.h' if -faltivec option present
1738 if (Args.hasArg(OPT_faltivec))
1739 Opts.Includes.push_back("altivec.h");
1740
1741 for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1742 ie = Args.filtered_end(); it != ie; ++it) {
1743 const Arg *A = *it;
1744 std::pair<StringRef,StringRef> Split =
1745 StringRef(A->getValue()).split(';');
1746
1747 if (Split.second.empty()) {
1748 Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1749 continue;
1750 }
1751
1752 Opts.addRemappedFile(Split.first, Split.second);
1753 }
1754
1755 if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
1756 StringRef Name = A->getValue();
1757 unsigned Library = llvm::StringSwitch<unsigned>(Name)
1758 .Case("libc++", ARCXX_libcxx)
1759 .Case("libstdc++", ARCXX_libstdcxx)
1760 .Case("none", ARCXX_nolib)
1761 .Default(~0U);
1762 if (Library == ~0U)
1763 Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1764 else
1765 Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
1766 }
1767 }
1768
ParsePreprocessorOutputArgs(PreprocessorOutputOptions & Opts,ArgList & Args,frontend::ActionKind Action)1769 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1770 ArgList &Args,
1771 frontend::ActionKind Action) {
1772 using namespace options;
1773
1774 switch (Action) {
1775 case frontend::ASTDeclList:
1776 case frontend::ASTDump:
1777 case frontend::ASTPrint:
1778 case frontend::ASTView:
1779 case frontend::EmitAssembly:
1780 case frontend::EmitBC:
1781 case frontend::EmitHTML:
1782 case frontend::EmitLLVM:
1783 case frontend::EmitLLVMOnly:
1784 case frontend::EmitCodeGenOnly:
1785 case frontend::EmitObj:
1786 case frontend::FixIt:
1787 case frontend::GenerateModule:
1788 case frontend::GeneratePCH:
1789 case frontend::GeneratePTH:
1790 case frontend::ParseSyntaxOnly:
1791 case frontend::ModuleFileInfo:
1792 case frontend::VerifyPCH:
1793 case frontend::PluginAction:
1794 case frontend::PrintDeclContext:
1795 case frontend::RewriteObjC:
1796 case frontend::RewriteTest:
1797 case frontend::RunAnalysis:
1798 case frontend::MigrateSource:
1799 Opts.ShowCPP = 0;
1800 break;
1801
1802 case frontend::DumpRawTokens:
1803 case frontend::DumpTokens:
1804 case frontend::InitOnly:
1805 case frontend::PrintPreamble:
1806 case frontend::PrintPreprocessedInput:
1807 case frontend::RewriteMacros:
1808 case frontend::RunPreprocessorOnly:
1809 Opts.ShowCPP = !Args.hasArg(OPT_dM);
1810 break;
1811 }
1812
1813 Opts.ShowComments = Args.hasArg(OPT_C);
1814 Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1815 Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1816 Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1817 Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
1818 Opts.UseLineDirectives = Args.hasArg(OPT_fuse_line_directives);
1819 }
1820
ParseTargetArgs(TargetOptions & Opts,ArgList & Args)1821 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1822 using namespace options;
1823 Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1824 Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1825 Opts.FPMath = Args.getLastArgValue(OPT_mfpmath);
1826 Opts.FeaturesAsWritten = Args.getAllArgValues(OPT_target_feature);
1827 Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1828 Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1829
1830 // Use the default target triple if unspecified.
1831 if (Opts.Triple.empty())
1832 Opts.Triple = llvm::sys::getDefaultTargetTriple();
1833 }
1834
CreateFromArgs(CompilerInvocation & Res,const char * const * ArgBegin,const char * const * ArgEnd,DiagnosticsEngine & Diags)1835 bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1836 const char *const *ArgBegin,
1837 const char *const *ArgEnd,
1838 DiagnosticsEngine &Diags) {
1839 bool Success = true;
1840
1841 // Parse the arguments.
1842 std::unique_ptr<OptTable> Opts(createDriverOptTable());
1843 const unsigned IncludedFlagsBitmask = options::CC1Option;
1844 unsigned MissingArgIndex, MissingArgCount;
1845 std::unique_ptr<InputArgList> Args(
1846 Opts->ParseArgs(ArgBegin, ArgEnd, MissingArgIndex, MissingArgCount,
1847 IncludedFlagsBitmask));
1848
1849 // Check for missing argument error.
1850 if (MissingArgCount) {
1851 Diags.Report(diag::err_drv_missing_argument)
1852 << Args->getArgString(MissingArgIndex) << MissingArgCount;
1853 Success = false;
1854 }
1855
1856 // Issue errors on unknown arguments.
1857 for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1858 ie = Args->filtered_end(); it != ie; ++it) {
1859 Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1860 Success = false;
1861 }
1862
1863 Success = ParseAnalyzerArgs(*Res.getAnalyzerOpts(), *Args, Diags) && Success;
1864 Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
1865 ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1866 Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
1867 && Success;
1868 ParseCommentArgs(Res.getLangOpts()->CommentOpts, *Args);
1869 ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1870 // FIXME: We shouldn't have to pass the DashX option around here
1871 InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1872 ParseTargetArgs(Res.getTargetOpts(), *Args);
1873 Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags,
1874 Res.getTargetOpts()) && Success;
1875 ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1876 if (DashX != IK_AST && DashX != IK_LLVM_IR) {
1877 ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
1878 if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
1879 Res.getLangOpts()->ObjCExceptions = 1;
1880 }
1881 // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1882 // PCH file and find the original header name. Remove the need to do that in
1883 // ParsePreprocessorArgs and remove the FileManager
1884 // parameters from the function and the "FileManager.h" #include.
1885 FileManager FileMgr(Res.getFileSystemOpts());
1886 ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1887 ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args,
1888 Res.getFrontendOpts().ProgramAction);
1889 return Success;
1890 }
1891
1892 namespace {
1893
1894 class ModuleSignature {
1895 SmallVector<uint64_t, 16> Data;
1896 unsigned CurBit;
1897 uint64_t CurValue;
1898
1899 public:
ModuleSignature()1900 ModuleSignature() : CurBit(0), CurValue(0) { }
1901
1902 void add(uint64_t Value, unsigned Bits);
1903 void add(StringRef Value);
1904 void flush();
1905
1906 llvm::APInt getAsInteger() const;
1907 };
1908 }
1909
add(uint64_t Value,unsigned int NumBits)1910 void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
1911 CurValue |= Value << CurBit;
1912 if (CurBit + NumBits < 64) {
1913 CurBit += NumBits;
1914 return;
1915 }
1916
1917 // Add the current word.
1918 Data.push_back(CurValue);
1919
1920 if (CurBit)
1921 CurValue = Value >> (64-CurBit);
1922 else
1923 CurValue = 0;
1924 CurBit = (CurBit+NumBits) & 63;
1925 }
1926
flush()1927 void ModuleSignature::flush() {
1928 if (CurBit == 0)
1929 return;
1930
1931 Data.push_back(CurValue);
1932 CurBit = 0;
1933 CurValue = 0;
1934 }
1935
add(StringRef Value)1936 void ModuleSignature::add(StringRef Value) {
1937 for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
1938 add(*I, 8);
1939 }
1940
getAsInteger() const1941 llvm::APInt ModuleSignature::getAsInteger() const {
1942 return llvm::APInt(Data.size() * 64, Data);
1943 }
1944
getModuleHash() const1945 std::string CompilerInvocation::getModuleHash() const {
1946 // Note: For QoI reasons, the things we use as a hash here should all be
1947 // dumped via the -module-info flag.
1948 using llvm::hash_code;
1949 using llvm::hash_value;
1950 using llvm::hash_combine;
1951
1952 // Start the signature with the compiler version.
1953 // FIXME: We'd rather use something more cryptographically sound than
1954 // CityHash, but this will do for now.
1955 hash_code code = hash_value(getClangFullRepositoryVersion());
1956
1957 // Extend the signature with the language options
1958 #define LANGOPT(Name, Bits, Default, Description) \
1959 code = hash_combine(code, LangOpts->Name);
1960 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1961 code = hash_combine(code, static_cast<unsigned>(LangOpts->get##Name()));
1962 #define BENIGN_LANGOPT(Name, Bits, Default, Description)
1963 #define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
1964 #include "clang/Basic/LangOptions.def"
1965
1966 // Extend the signature with the target options.
1967 code = hash_combine(code, TargetOpts->Triple, TargetOpts->CPU,
1968 TargetOpts->ABI);
1969 for (unsigned i = 0, n = TargetOpts->FeaturesAsWritten.size(); i != n; ++i)
1970 code = hash_combine(code, TargetOpts->FeaturesAsWritten[i]);
1971
1972 // Extend the signature with preprocessor options.
1973 const PreprocessorOptions &ppOpts = getPreprocessorOpts();
1974 const HeaderSearchOptions &hsOpts = getHeaderSearchOpts();
1975 code = hash_combine(code, ppOpts.UsePredefines, ppOpts.DetailedRecord);
1976
1977 for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
1978 I = getPreprocessorOpts().Macros.begin(),
1979 IEnd = getPreprocessorOpts().Macros.end();
1980 I != IEnd; ++I) {
1981 // If we're supposed to ignore this macro for the purposes of modules,
1982 // don't put it into the hash.
1983 if (!hsOpts.ModulesIgnoreMacros.empty()) {
1984 // Check whether we're ignoring this macro.
1985 StringRef MacroDef = I->first;
1986 if (hsOpts.ModulesIgnoreMacros.count(MacroDef.split('=').first))
1987 continue;
1988 }
1989
1990 code = hash_combine(code, I->first, I->second);
1991 }
1992
1993 // Extend the signature with the sysroot.
1994 code = hash_combine(code, hsOpts.Sysroot, hsOpts.UseBuiltinIncludes,
1995 hsOpts.UseStandardSystemIncludes,
1996 hsOpts.UseStandardCXXIncludes,
1997 hsOpts.UseLibcxx);
1998 code = hash_combine(code, hsOpts.ResourceDir);
1999
2000 // Extend the signature with the user build path.
2001 code = hash_combine(code, hsOpts.ModuleUserBuildPath);
2002
2003 // Darwin-specific hack: if we have a sysroot, use the contents and
2004 // modification time of
2005 // $sysroot/System/Library/CoreServices/SystemVersion.plist
2006 // as part of the module hash.
2007 if (!hsOpts.Sysroot.empty()) {
2008 SmallString<128> systemVersionFile;
2009 systemVersionFile += hsOpts.Sysroot;
2010 llvm::sys::path::append(systemVersionFile, "System");
2011 llvm::sys::path::append(systemVersionFile, "Library");
2012 llvm::sys::path::append(systemVersionFile, "CoreServices");
2013 llvm::sys::path::append(systemVersionFile, "SystemVersion.plist");
2014
2015 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> buffer =
2016 llvm::MemoryBuffer::getFile(systemVersionFile);
2017 if (buffer) {
2018 code = hash_combine(code, buffer.get()->getBuffer());
2019
2020 struct stat statBuf;
2021 if (stat(systemVersionFile.c_str(), &statBuf) == 0)
2022 code = hash_combine(code, statBuf.st_mtime);
2023 }
2024 }
2025
2026 return llvm::APInt(64, code).toString(36, /*Signed=*/false);
2027 }
2028
2029 namespace clang {
2030
2031 template<typename IntTy>
getLastArgIntValueImpl(const ArgList & Args,OptSpecifier Id,IntTy Default,DiagnosticsEngine * Diags)2032 static IntTy getLastArgIntValueImpl(const ArgList &Args, OptSpecifier Id,
2033 IntTy Default,
2034 DiagnosticsEngine *Diags) {
2035 IntTy Res = Default;
2036 if (Arg *A = Args.getLastArg(Id)) {
2037 if (StringRef(A->getValue()).getAsInteger(10, Res)) {
2038 if (Diags)
2039 Diags->Report(diag::err_drv_invalid_int_value) << A->getAsString(Args)
2040 << A->getValue();
2041 }
2042 }
2043 return Res;
2044 }
2045
2046
2047 // Declared in clang/Frontend/Utils.h.
getLastArgIntValue(const ArgList & Args,OptSpecifier Id,int Default,DiagnosticsEngine * Diags)2048 int getLastArgIntValue(const ArgList &Args, OptSpecifier Id, int Default,
2049 DiagnosticsEngine *Diags) {
2050 return getLastArgIntValueImpl<int>(Args, Id, Default, Diags);
2051 }
2052
getLastArgUInt64Value(const ArgList & Args,OptSpecifier Id,uint64_t Default,DiagnosticsEngine * Diags)2053 uint64_t getLastArgUInt64Value(const ArgList &Args, OptSpecifier Id,
2054 uint64_t Default,
2055 DiagnosticsEngine *Diags) {
2056 return getLastArgIntValueImpl<uint64_t>(Args, Id, Default, Diags);
2057 }
2058
BuryPointer(const void * Ptr)2059 void BuryPointer(const void *Ptr) {
2060 // This function may be called only a small fixed amount of times per each
2061 // invocation, otherwise we do actually have a leak which we want to report.
2062 // If this function is called more than kGraveYardMaxSize times, the pointers
2063 // will not be properly buried and a leak detector will report a leak, which
2064 // is what we want in such case.
2065 static const size_t kGraveYardMaxSize = 16;
2066 LLVM_ATTRIBUTE_UNUSED static const void *GraveYard[kGraveYardMaxSize];
2067 static std::atomic<unsigned> GraveYardSize;
2068 unsigned Idx = GraveYardSize++;
2069 if (Idx >= kGraveYardMaxSize)
2070 return;
2071 GraveYard[Idx] = Ptr;
2072 }
2073
2074 IntrusiveRefCntPtr<vfs::FileSystem>
createVFSFromCompilerInvocation(const CompilerInvocation & CI,DiagnosticsEngine & Diags)2075 createVFSFromCompilerInvocation(const CompilerInvocation &CI,
2076 DiagnosticsEngine &Diags) {
2077 if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty())
2078 return vfs::getRealFileSystem();
2079
2080 IntrusiveRefCntPtr<vfs::OverlayFileSystem>
2081 Overlay(new vfs::OverlayFileSystem(vfs::getRealFileSystem()));
2082 // earlier vfs files are on the bottom
2083 for (const std::string &File : CI.getHeaderSearchOpts().VFSOverlayFiles) {
2084 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer =
2085 llvm::MemoryBuffer::getFile(File);
2086 if (!Buffer) {
2087 Diags.Report(diag::err_missing_vfs_overlay_file) << File;
2088 return IntrusiveRefCntPtr<vfs::FileSystem>();
2089 }
2090
2091 IntrusiveRefCntPtr<vfs::FileSystem> FS =
2092 vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr);
2093 if (!FS.get()) {
2094 Diags.Report(diag::err_invalid_vfs_overlay) << File;
2095 return IntrusiveRefCntPtr<vfs::FileSystem>();
2096 }
2097 Overlay->pushOverlay(FS);
2098 }
2099 return Overlay;
2100 }
2101 } // end namespace clang
2102