xref: /llvm-project/clang/lib/Frontend/CompilerInvocation.cpp (revision 51924e517bd2d25faea6ef873db3c59ec4d09bf8) 
1 //===--- CompilerInvocation.cpp -------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "clang/Frontend/CompilerInvocation.h"
11 #include "clang/Basic/Diagnostic.h"
12 #include "clang/Basic/Version.h"
13 #include "clang/Driver/Arg.h"
14 #include "clang/Driver/ArgList.h"
15 #include "clang/Driver/CC1Options.h"
16 #include "clang/Driver/DriverDiagnostic.h"
17 #include "clang/Driver/OptTable.h"
18 #include "clang/Driver/Option.h"
19 #include "clang/Frontend/CompilerInvocation.h"
20 #include "clang/Frontend/LangStandard.h"
21 #include "clang/Frontend/PCHReader.h"
22 #include "llvm/ADT/OwningPtr.h"
23 #include "llvm/ADT/SmallVector.h"
24 #include "llvm/ADT/StringExtras.h"
25 #include "llvm/ADT/StringSwitch.h"
26 #include "llvm/Support/ErrorHandling.h"
27 #include "llvm/System/Host.h"
28 #include "llvm/System/Path.h"
29 using namespace clang;
30 
31 static const char *getAnalysisName(Analyses Kind) {
32   switch (Kind) {
33   default:
34     llvm_unreachable("Unknown analysis kind!");
35 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE)\
36   case NAME: return "-" CMDFLAG;
37 #include "clang/Frontend/Analyses.def"
38   }
39 }
40 
41 static const char *getAnalysisStoreName(AnalysisStores Kind) {
42   switch (Kind) {
43   default:
44     llvm_unreachable("Unknown analysis store!");
45 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
46   case NAME##Model: return CMDFLAG;
47 #include "clang/Frontend/Analyses.def"
48   }
49 }
50 
51 static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
52   switch (Kind) {
53   default:
54     llvm_unreachable("Unknown analysis constraints!");
55 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
56   case NAME##Model: return CMDFLAG;
57 #include "clang/Frontend/Analyses.def"
58   }
59 }
60 
61 static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
62   switch (Kind) {
63   default:
64     llvm_unreachable("Unknown analysis client!");
65 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
66   case PD_##NAME: return CMDFLAG;
67 #include "clang/Frontend/Analyses.def"
68   }
69 }
70 
71 //===----------------------------------------------------------------------===//
72 // Serialization (to args)
73 //===----------------------------------------------------------------------===//
74 
75 static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
76                                std::vector<std::string> &Res) {
77   for (unsigned i = 0, e = Opts.AnalysisList.size(); i != e; ++i)
78     Res.push_back(getAnalysisName(Opts.AnalysisList[i]));
79   if (Opts.AnalysisStoreOpt != BasicStoreModel) {
80     Res.push_back("-analyzer-store");
81     Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
82   }
83   if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
84     Res.push_back("-analyzer-constraints");
85     Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
86   }
87   if (Opts.AnalysisDiagOpt != PD_HTML) {
88     Res.push_back("-analyzer-output");
89     Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
90   }
91   if (!Opts.AnalyzeSpecificFunction.empty()) {
92     Res.push_back("-analyze-function");
93     Res.push_back(Opts.AnalyzeSpecificFunction);
94   }
95   if (Opts.AnalyzeAll)
96     Res.push_back("-analyzer-opt-analyze-headers");
97   if (Opts.AnalyzerDisplayProgress)
98     Res.push_back("-analyzer-display-progress");
99   if (Opts.AnalyzeNestedBlocks)
100     Res.push_back("-analyzer-opt-analyze-nested-blocks");
101   if (Opts.EagerlyAssume)
102     Res.push_back("-analyzer-eagerly-assume");
103   if (!Opts.PurgeDead)
104     Res.push_back("-analyzer-no-purge-dead");
105   if (Opts.TrimGraph)
106     Res.push_back("-trim-egraph");
107   if (Opts.VisualizeEGDot)
108     Res.push_back("-analyzer-viz-egraph-graphviz");
109   if (Opts.VisualizeEGDot)
110     Res.push_back("-analyzer-viz-egraph-ubigraph");
111   if (Opts.EnableExperimentalChecks)
112     Res.push_back("-analyzer-experimental-checks");
113   if (Opts.EnableExperimentalInternalChecks)
114     Res.push_back("-analyzer-experimental-internal-checks");
115 }
116 
117 static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
118                               std::vector<std::string> &Res) {
119   if (Opts.DebugInfo)
120     Res.push_back("-g");
121   if (Opts.DisableLLVMOpts)
122     Res.push_back("-disable-llvm-optzns");
123   if (Opts.DisableRedZone)
124     Res.push_back("-disable-red-zone");
125   if (!Opts.DwarfDebugFlags.empty()) {
126     Res.push_back("-dwarf-debug-flags");
127     Res.push_back(Opts.DwarfDebugFlags);
128   }
129   if (!Opts.MergeAllConstants)
130     Res.push_back("-fno-merge-all-constants");
131   if (Opts.NoCommon)
132     Res.push_back("-fno-common");
133   if (Opts.NoImplicitFloat)
134     Res.push_back("-no-implicit-float");
135   if (Opts.OptimizeSize) {
136     assert(Opts.OptimizationLevel == 2 && "Invalid options!");
137     Res.push_back("-Os");
138   } else if (Opts.OptimizationLevel != 0)
139     Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
140   if (!Opts.MainFileName.empty()) {
141     Res.push_back("-main-file-name");
142     Res.push_back(Opts.MainFileName);
143   }
144   // SimplifyLibCalls is only derived.
145   // TimePasses is only derived.
146   // UnitAtATime is unused.
147   // UnrollLoops is only derived.
148   // Inlining is only derived.
149 
150   if (Opts.DataSections)
151     Res.push_back("-fdata-sections");
152   if (Opts.FunctionSections)
153     Res.push_back("-ffunction-sections");
154   if (Opts.AsmVerbose)
155     Res.push_back("-masm-verbose");
156   if (!Opts.CodeModel.empty()) {
157     Res.push_back("-mcode-model");
158     Res.push_back(Opts.CodeModel);
159   }
160   if (!Opts.CXAAtExit)
161     Res.push_back("-fno-use-cxa-atexit");
162   if (Opts.CXXCtorDtorAliases)
163     Res.push_back("-mconstructor-aliases");
164   if (!Opts.DebugPass.empty()) {
165     Res.push_back("-mdebug-pass");
166     Res.push_back(Opts.DebugPass);
167   }
168   if (Opts.DisableFPElim)
169     Res.push_back("-mdisable-fp-elim");
170   if (!Opts.FloatABI.empty()) {
171     Res.push_back("-mfloat-abi");
172     Res.push_back(Opts.FloatABI);
173   }
174   if (!Opts.LimitFloatPrecision.empty()) {
175     Res.push_back("-mlimit-float-precision");
176     Res.push_back(Opts.LimitFloatPrecision);
177   }
178   if (Opts.NoZeroInitializedInBSS)
179     Res.push_back("-mno-zero-initialized-bss");
180   switch (Opts.getObjCDispatchMethod()) {
181   case CodeGenOptions::Legacy:
182     break;
183   case CodeGenOptions::Mixed:
184     Res.push_back("-fobjc-dispatch-method=mixed");
185     break;
186   case CodeGenOptions::NonLegacy:
187     Res.push_back("-fobjc-dispatch-method=non-legacy");
188     break;
189   }
190   if (Opts.RelaxAll)
191     Res.push_back("-mrelax-all");
192   if (Opts.SoftFloat)
193     Res.push_back("-msoft-float");
194   if (Opts.UnwindTables)
195     Res.push_back("-munwind-tables");
196   if (Opts.RelocationModel != "pic") {
197     Res.push_back("-mrelocation-model");
198     Res.push_back(Opts.RelocationModel);
199   }
200   if (!Opts.VerifyModule)
201     Res.push_back("-disable-llvm-verifier");
202 }
203 
204 static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
205                                        std::vector<std::string> &Res) {
206   if (Opts.IncludeSystemHeaders)
207     Res.push_back("-sys-header-deps");
208   if (Opts.UsePhonyTargets)
209     Res.push_back("-MP");
210   if (!Opts.OutputFile.empty()) {
211     Res.push_back("-dependency-file");
212     Res.push_back(Opts.OutputFile);
213   }
214   for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
215     Res.push_back("-MT");
216     Res.push_back(Opts.Targets[i]);
217   }
218 }
219 
220 static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
221                                  std::vector<std::string> &Res) {
222   if (Opts.IgnoreWarnings)
223     Res.push_back("-w");
224   if (Opts.NoRewriteMacros)
225     Res.push_back("-Wno-rewrite-macros");
226   if (Opts.Pedantic)
227     Res.push_back("-pedantic");
228   if (Opts.PedanticErrors)
229     Res.push_back("-pedantic-errors");
230   if (!Opts.ShowColumn)
231     Res.push_back("-fno-show-column");
232   if (!Opts.ShowLocation)
233     Res.push_back("-fno-show-source-location");
234   if (!Opts.ShowCarets)
235     Res.push_back("-fno-caret-diagnostics");
236   if (!Opts.ShowFixits)
237     Res.push_back("-fno-diagnostics-fixit-info");
238   if (Opts.ShowSourceRanges)
239     Res.push_back("-fdiagnostics-print-source-range-info");
240   if (Opts.ShowColors)
241     Res.push_back("-fcolor-diagnostics");
242   if (Opts.VerifyDiagnostics)
243     Res.push_back("-verify");
244   if (Opts.BinaryOutput)
245     Res.push_back("-fdiagnostics-binary");
246   if (Opts.ShowOptionNames)
247     Res.push_back("-fdiagnostics-show-option");
248   if (Opts.ShowCategories == 1)
249     Res.push_back("-fdiagnostics-show-category=id");
250   else if (Opts.ShowCategories == 2)
251     Res.push_back("-fdiagnostics-show-category=name");
252   if (Opts.ErrorLimit) {
253     Res.push_back("-ferror-limit");
254     Res.push_back(llvm::utostr(Opts.ErrorLimit));
255   }
256   if (Opts.MacroBacktraceLimit
257                         != DiagnosticOptions::DefaultMacroBacktraceLimit) {
258     Res.push_back("-fmacro-backtrace-limit");
259     Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
260   }
261   if (Opts.TemplateBacktraceLimit
262                         != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
263     Res.push_back("-ftemplate-backtrace-limit");
264     Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
265   }
266 
267   if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
268     Res.push_back("-ftabstop");
269     Res.push_back(llvm::utostr(Opts.TabStop));
270   }
271   if (Opts.MessageLength) {
272     Res.push_back("-fmessage-length");
273     Res.push_back(llvm::utostr(Opts.MessageLength));
274   }
275   if (!Opts.DumpBuildInformation.empty()) {
276     Res.push_back("-dump-build-information");
277     Res.push_back(Opts.DumpBuildInformation);
278   }
279   for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
280     Res.push_back("-W" + Opts.Warnings[i]);
281 }
282 
283 static const char *getInputKindName(InputKind Kind) {
284   switch (Kind) {
285   case IK_None:              break;
286   case IK_AST:               return "ast";
287   case IK_Asm:               return "assembler-with-cpp";
288   case IK_C:                 return "c";
289   case IK_CXX:               return "c++";
290   case IK_LLVM_IR:           return "ir";
291   case IK_ObjC:              return "objective-c";
292   case IK_ObjCXX:            return "objective-c++";
293   case IK_OpenCL:            return "cl";
294   case IK_PreprocessedC:     return "cpp-output";
295   case IK_PreprocessedCXX:   return "c++-cpp-output";
296   case IK_PreprocessedObjC:  return "objective-c-cpp-output";
297   case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
298   }
299 
300   llvm_unreachable("Unexpected language kind!");
301   return 0;
302 }
303 
304 static const char *getActionName(frontend::ActionKind Kind) {
305   switch (Kind) {
306   case frontend::PluginAction:
307   case frontend::InheritanceView:
308     llvm_unreachable("Invalid kind!");
309 
310   case frontend::ASTDump:                return "-ast-dump";
311   case frontend::ASTPrint:               return "-ast-print";
312   case frontend::ASTPrintXML:            return "-ast-print-xml";
313   case frontend::ASTView:                return "-ast-view";
314   case frontend::BoostCon:               return "-boostcon";
315   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
316   case frontend::DumpTokens:             return "-dump-tokens";
317   case frontend::EmitAssembly:           return "-S";
318   case frontend::EmitBC:                 return "-emit-llvm-bc";
319   case frontend::EmitHTML:               return "-emit-html";
320   case frontend::EmitLLVM:               return "-emit-llvm";
321   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
322   case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
323   case frontend::EmitObj:                return "-emit-obj";
324   case frontend::FixIt:                  return "-fixit";
325   case frontend::GeneratePCH:            return "-emit-pch";
326   case frontend::GeneratePTH:            return "-emit-pth";
327   case frontend::InitOnly:               return "-init-only";
328   case frontend::ParseNoop:              return "-parse-noop";
329   case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
330   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
331   case frontend::PrintDeclContext:       return "-print-decl-contexts";
332   case frontend::PrintPreprocessedInput: return "-E";
333   case frontend::RewriteMacros:          return "-rewrite-macros";
334   case frontend::RewriteObjC:            return "-rewrite-objc";
335   case frontend::RewriteTest:            return "-rewrite-test";
336   case frontend::RunAnalysis:            return "-analyze";
337   case frontend::RunPreprocessorOnly:    return "-Eonly";
338   }
339 
340   llvm_unreachable("Unexpected language kind!");
341   return 0;
342 }
343 
344 static void FrontendOptsToArgs(const FrontendOptions &Opts,
345                                std::vector<std::string> &Res) {
346   if (!Opts.DebugCodeCompletionPrinter)
347     Res.push_back("-no-code-completion-debug-printer");
348   if (Opts.DisableFree)
349     Res.push_back("-disable-free");
350   if (Opts.RelocatablePCH)
351     Res.push_back("-relocatable-pch");
352   if (Opts.ShowHelp)
353     Res.push_back("-help");
354   if (Opts.ShowMacrosInCodeCompletion)
355     Res.push_back("-code-completion-macros");
356   if (Opts.ShowCodePatternsInCodeCompletion)
357     Res.push_back("-code-completion-patterns");
358   if (Opts.ShowStats)
359     Res.push_back("-print-stats");
360   if (Opts.ShowTimers)
361     Res.push_back("-ftime-report");
362   if (Opts.ShowVersion)
363     Res.push_back("-version");
364 
365   bool NeedLang = false;
366   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
367     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
368         Opts.Inputs[i].first)
369       NeedLang = true;
370   if (NeedLang) {
371     Res.push_back("-x");
372     Res.push_back(getInputKindName(Opts.Inputs[0].first));
373   }
374   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
375     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
376            "Unable to represent this input vector!");
377     Res.push_back(Opts.Inputs[i].second);
378   }
379 
380   if (!Opts.OutputFile.empty()) {
381     Res.push_back("-o");
382     Res.push_back(Opts.OutputFile);
383   }
384   if (!Opts.ViewClassInheritance.empty()) {
385     Res.push_back("-cxx-inheritance-view");
386     Res.push_back(Opts.ViewClassInheritance);
387   }
388   if (!Opts.CodeCompletionAt.FileName.empty()) {
389     Res.push_back("-code-completion-at");
390     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
391                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
392                   llvm::utostr(Opts.CodeCompletionAt.Column));
393   }
394   if (Opts.ProgramAction != frontend::InheritanceView &&
395       Opts.ProgramAction != frontend::PluginAction)
396     Res.push_back(getActionName(Opts.ProgramAction));
397   if (!Opts.ActionName.empty()) {
398     Res.push_back("-plugin");
399     Res.push_back(Opts.ActionName);
400     for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
401       Res.push_back("-plugin-arg-" + Opts.ActionName);
402       Res.push_back(Opts.PluginArgs[i]);
403     }
404   }
405   for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
406     Res.push_back("-load");
407     Res.push_back(Opts.Plugins[i]);
408   }
409   for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
410     Res.push_back("-ast-merge");
411     Res.push_back(Opts.ASTMergeFiles[i]);
412   }
413   for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
414     Res.push_back("-mllvm");
415     Res.push_back(Opts.LLVMArgs[i]);
416   }
417 }
418 
419 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
420                                    std::vector<std::string> &Res) {
421   if (Opts.Sysroot != "/") {
422     Res.push_back("-isysroot");
423     Res.push_back(Opts.Sysroot);
424   }
425 
426   /// User specified include entries.
427   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
428     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
429     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
430       llvm::report_fatal_error("Invalid option set!");
431     if (E.IsUserSupplied) {
432       if (E.Group == frontend::After) {
433         Res.push_back("-idirafter");
434       } else if (E.Group == frontend::Quoted) {
435         Res.push_back("-iquote");
436       } else if (E.Group == frontend::System) {
437         Res.push_back("-isystem");
438       } else {
439         assert(E.Group == frontend::Angled && "Invalid group!");
440         Res.push_back(E.IsFramework ? "-F" : "-I");
441       }
442     } else {
443       if (E.Group != frontend::Angled && E.Group != frontend::System)
444         llvm::report_fatal_error("Invalid option set!");
445       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
446                     "-iwithprefix");
447     }
448     Res.push_back(E.Path);
449   }
450 
451   if (!Opts.EnvIncPath.empty()) {
452     // FIXME: Provide an option for this, and move env detection to driver.
453     llvm::report_fatal_error("Not yet implemented!");
454   }
455   if (!Opts.CEnvIncPath.empty()) {
456     // FIXME: Provide an option for this, and move env detection to driver.
457     llvm::report_fatal_error("Not yet implemented!");
458   }
459   if (!Opts.ObjCEnvIncPath.empty()) {
460     // FIXME: Provide an option for this, and move env detection to driver.
461     llvm::report_fatal_error("Not yet implemented!");
462   }
463   if (!Opts.CXXEnvIncPath.empty()) {
464     // FIXME: Provide an option for this, and move env detection to driver.
465     llvm::report_fatal_error("Not yet implemented!");
466   }
467   if (!Opts.ObjCXXEnvIncPath.empty()) {
468     // FIXME: Provide an option for this, and move env detection to driver.
469     llvm::report_fatal_error("Not yet implemented!");
470   }
471   if (!Opts.ResourceDir.empty()) {
472     Res.push_back("-resource-dir");
473     Res.push_back(Opts.ResourceDir);
474   }
475   if (!Opts.UseStandardIncludes)
476     Res.push_back("-nostdinc");
477   if (!Opts.UseStandardCXXIncludes)
478     Res.push_back("-nostdinc++");
479   if (Opts.Verbose)
480     Res.push_back("-v");
481 }
482 
483 static void LangOptsToArgs(const LangOptions &Opts,
484                            std::vector<std::string> &Res) {
485   LangOptions DefaultLangOpts;
486 
487   // FIXME: Need to set -std to get all the implicit options.
488 
489   // FIXME: We want to only pass options relative to the defaults, which
490   // requires constructing a target. :(
491   //
492   // It would be better to push the all target specific choices into the driver,
493   // so that everything below that was more uniform.
494 
495   if (Opts.Trigraphs)
496     Res.push_back("-trigraphs");
497   // Implicit based on the input kind:
498   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
499   // Implicit based on the input language standard:
500   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
501   if (Opts.DollarIdents)
502     Res.push_back("-fdollars-in-identifiers");
503   if (Opts.GNUMode && !Opts.GNUKeywords)
504     Res.push_back("-fno-gnu-keywords");
505   if (!Opts.GNUMode && Opts.GNUKeywords)
506     Res.push_back("-fgnu-keywords");
507   if (Opts.Microsoft)
508     Res.push_back("-fms-extensions");
509   if (Opts.ObjCNonFragileABI)
510     Res.push_back("-fobjc-nonfragile-abi");
511   if (Opts.ObjCNonFragileABI2)
512     Res.push_back("-fobjc-nonfragile-abi2");
513   // NoInline is implicit.
514   if (!Opts.CXXOperatorNames)
515     Res.push_back("-fno-operator-names");
516   if (Opts.PascalStrings)
517     Res.push_back("-fpascal-strings");
518   if (Opts.CatchUndefined)
519     Res.push_back("-fcatch-undefined-behavior");
520   if (Opts.WritableStrings)
521     Res.push_back("-fwritable-strings");
522   if (Opts.ConstStrings)
523     Res.push_back("-Wwrite-strings");
524   if (!Opts.LaxVectorConversions)
525     Res.push_back("-fno-lax-vector-conversions");
526   if (Opts.AltiVec)
527     Res.push_back("-faltivec");
528   if (Opts.Exceptions)
529     Res.push_back("-fexceptions");
530   if (Opts.SjLjExceptions)
531     Res.push_back("-fsjlj-exceptions");
532   if (!Opts.RTTI)
533     Res.push_back("-fno-rtti");
534   if (!Opts.NeXTRuntime)
535     Res.push_back("-fgnu-runtime");
536   if (Opts.Freestanding)
537     Res.push_back("-ffreestanding");
538   if (Opts.NoBuiltin)
539     Res.push_back("-fno-builtin");
540   if (!Opts.AssumeSaneOperatorNew)
541     Res.push_back("-fno-assume-sane-operator-new");
542   if (!Opts.ThreadsafeStatics)
543     Res.push_back("-fno-threadsafe-statics");
544   if (Opts.POSIXThreads)
545     Res.push_back("-pthread");
546   if (Opts.Blocks)
547     Res.push_back("-fblocks");
548   if (Opts.EmitAllDecls)
549     Res.push_back("-femit-all-decls");
550   if (Opts.MathErrno)
551     Res.push_back("-fmath-errno");
552   switch (Opts.getSignedOverflowBehavior()) {
553   case LangOptions::SOB_Undefined: break;
554   case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
555   case LangOptions::SOB_Trapping:  Res.push_back("-ftrapv"); break;
556   }
557   if (Opts.HeinousExtensions)
558     Res.push_back("-fheinous-gnu-extensions");
559   // Optimize is implicit.
560   // OptimizeSize is implicit.
561   if (Opts.Static)
562     Res.push_back("-static-define");
563   if (Opts.DumpRecordLayouts)
564     Res.push_back("-fdump-record-layouts");
565   if (Opts.DumpVTableLayouts)
566     Res.push_back("-fdump-vtable-layouts");
567   if (Opts.NoBitFieldTypeAlign)
568     Res.push_back("-fno-bitfield-type-alignment");
569   if (Opts.SjLjExceptions)
570     Res.push_back("-fsjlj-exceptions");
571   if (Opts.PICLevel) {
572     Res.push_back("-pic-level");
573     Res.push_back(llvm::utostr(Opts.PICLevel));
574   }
575   if (Opts.ObjCGCBitmapPrint)
576     Res.push_back("-print-ivar-layout");
577   if (Opts.NoConstantCFStrings)
578     Res.push_back("-fno-constant-cfstrings");
579   if (!Opts.AccessControl)
580     Res.push_back("-fno-access-control");
581   if (!Opts.CharIsSigned)
582     Res.push_back("-fno-signed-char");
583   if (Opts.ShortWChar)
584     Res.push_back("-fshort-wchar");
585   if (!Opts.ElideConstructors)
586     Res.push_back("-fno-elide-constructors");
587   if (Opts.getGCMode() != LangOptions::NonGC) {
588     if (Opts.getGCMode() == LangOptions::HybridGC) {
589       Res.push_back("-fobjc-gc");
590     } else {
591       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
592       Res.push_back("-fobjc-gc-only");
593     }
594   }
595   if (Opts.getVisibilityMode() != LangOptions::Default) {
596     Res.push_back("-fvisibility");
597     if (Opts.getVisibilityMode() == LangOptions::Hidden) {
598       Res.push_back("hidden");
599     } else {
600       assert(Opts.getVisibilityMode() == LangOptions::Protected &&
601              "Invalid visibility!");
602       Res.push_back("protected");
603     }
604   }
605   if (Opts.InlineVisibilityHidden)
606     Res.push_back("-fvisibility-inlines-hidden");
607 
608   if (Opts.getStackProtectorMode() != 0) {
609     Res.push_back("-stack-protector");
610     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
611   }
612   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
613     Res.push_back("-ftemplate-depth");
614     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
615   }
616   if (!Opts.ObjCConstantStringClass.empty()) {
617     Res.push_back("-fconstant-string-class");
618     Res.push_back(Opts.ObjCConstantStringClass);
619   }
620 }
621 
622 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
623                                    std::vector<std::string> &Res) {
624   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
625     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
626                   Opts.Macros[i].first);
627   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
628     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
629     Res.push_back("-include");
630     Res.push_back(Opts.Includes[i]);
631   }
632   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
633     Res.push_back("-imacros");
634     Res.push_back(Opts.MacroIncludes[i]);
635   }
636   if (!Opts.UsePredefines)
637     Res.push_back("-undef");
638   if (Opts.DetailedRecord)
639     Res.push_back("-detailed-preprocessing-record");
640   if (!Opts.ImplicitPCHInclude.empty()) {
641     Res.push_back("-include-pch");
642     Res.push_back(Opts.ImplicitPCHInclude);
643   }
644   if (!Opts.ImplicitPTHInclude.empty()) {
645     Res.push_back("-include-pth");
646     Res.push_back(Opts.ImplicitPTHInclude);
647   }
648   if (!Opts.TokenCache.empty()) {
649     if (Opts.ImplicitPTHInclude.empty()) {
650       Res.push_back("-token-cache");
651       Res.push_back(Opts.TokenCache);
652     } else
653       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
654              "Unsupported option combination!");
655   }
656   for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
657     Res.push_back("-remap-file");
658     Res.push_back(Opts.RemappedFiles[i].first + ";" +
659                   Opts.RemappedFiles[i].second);
660   }
661 }
662 
663 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
664                                          std::vector<std::string> &Res) {
665   if (!Opts.ShowCPP && !Opts.ShowMacros)
666     llvm::report_fatal_error("Invalid option combination!");
667 
668   if (Opts.ShowCPP && Opts.ShowMacros)
669     Res.push_back("-dD");
670   else if (!Opts.ShowCPP && Opts.ShowMacros)
671     Res.push_back("-dM");
672 
673   if (!Opts.ShowLineMarkers)
674     Res.push_back("-P");
675   if (Opts.ShowComments)
676     Res.push_back("-C");
677   if (Opts.ShowMacroComments)
678     Res.push_back("-CC");
679 }
680 
681 static void TargetOptsToArgs(const TargetOptions &Opts,
682                              std::vector<std::string> &Res) {
683   Res.push_back("-triple");
684   Res.push_back(Opts.Triple);
685   if (!Opts.CPU.empty()) {
686     Res.push_back("-target-cpu");
687     Res.push_back(Opts.CPU);
688   }
689   if (!Opts.ABI.empty()) {
690     Res.push_back("-target-abi");
691     Res.push_back(Opts.ABI);
692   }
693   Res.push_back("-cxx-abi");
694   Res.push_back(Opts.CXXABI);
695   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
696     Res.push_back("-target-feature");
697     Res.push_back(Opts.Features[i]);
698   }
699 }
700 
701 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
702   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
703   CodeGenOptsToArgs(getCodeGenOpts(), Res);
704   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
705   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
706   FrontendOptsToArgs(getFrontendOpts(), Res);
707   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
708   LangOptsToArgs(getLangOpts(), Res);
709   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
710   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
711   TargetOptsToArgs(getTargetOpts(), Res);
712 }
713 
714 //===----------------------------------------------------------------------===//
715 // Deserialization (to args)
716 //===----------------------------------------------------------------------===//
717 
718 using namespace clang::driver;
719 using namespace clang::driver::cc1options;
720 
721 //
722 
723 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
724                               Diagnostic &Diags) {
725   using namespace cc1options;
726 
727   Opts.AnalysisList.clear();
728 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
729   if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
730 #include "clang/Frontend/Analyses.def"
731 
732   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
733     llvm::StringRef Name = A->getValue(Args);
734     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
735 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
736       .Case(CMDFLAG, NAME##Model)
737 #include "clang/Frontend/Analyses.def"
738       .Default(NumStores);
739     // FIXME: Error handling.
740     if (Value == NumStores)
741       Diags.Report(diag::err_drv_invalid_value)
742         << A->getAsString(Args) << Name;
743     else
744       Opts.AnalysisStoreOpt = Value;
745   }
746 
747   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
748     llvm::StringRef Name = A->getValue(Args);
749     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
750 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
751       .Case(CMDFLAG, NAME##Model)
752 #include "clang/Frontend/Analyses.def"
753       .Default(NumConstraints);
754     // FIXME: Error handling.
755     if (Value == NumConstraints)
756       Diags.Report(diag::err_drv_invalid_value)
757         << A->getAsString(Args) << Name;
758     else
759       Opts.AnalysisConstraintsOpt = Value;
760   }
761 
762   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
763     llvm::StringRef Name = A->getValue(Args);
764     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
765 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
766       .Case(CMDFLAG, PD_##NAME)
767 #include "clang/Frontend/Analyses.def"
768       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
769     // FIXME: Error handling.
770     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
771       Diags.Report(diag::err_drv_invalid_value)
772         << A->getAsString(Args) << Name;
773     else
774       Opts.AnalysisDiagOpt = Value;
775   }
776 
777   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
778   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
779   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
780   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
781   Opts.AnalyzeNestedBlocks =
782     Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
783   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
784   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
785   Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
786   Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
787   Opts.EnableExperimentalInternalChecks =
788     Args.hasArg(OPT_analyzer_experimental_internal_checks);
789   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
790   Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
791   Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 3, Diags);
792   Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
793 }
794 
795 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
796                              Diagnostic &Diags) {
797   using namespace cc1options;
798   // -Os implies -O2
799   if (Args.hasArg(OPT_Os))
800     Opts.OptimizationLevel = 2;
801   else {
802     Opts.OptimizationLevel = Args.getLastArgIntValue(OPT_O, 0, Diags);
803     if (Opts.OptimizationLevel > 3) {
804       Diags.Report(diag::err_drv_invalid_value)
805         << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
806       Opts.OptimizationLevel = 3;
807     }
808   }
809 
810   // We must always run at least the always inlining pass.
811   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
812     : CodeGenOptions::OnlyAlwaysInlining;
813 
814   Opts.DebugInfo = Args.hasArg(OPT_g);
815   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
816   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
817   Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
818   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
819   Opts.NoCommon = Args.hasArg(OPT_fno_common);
820   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
821   Opts.OptimizeSize = Args.hasArg(OPT_Os);
822   Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
823                             Args.hasArg(OPT_ffreestanding));
824   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
825 
826   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
827   Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
828   Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
829   Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
830   Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
831   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
832   Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
833   Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
834   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
835   Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
836   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
837   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
838   Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
839 
840   Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
841   Opts.DataSections = Args.hasArg(OPT_fdata_sections);
842 
843   Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
844   Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
845 
846   Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
847 
848   if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
849     llvm::StringRef Name = A->getValue(Args);
850     unsigned Method = llvm::StringSwitch<unsigned>(Name)
851       .Case("legacy", CodeGenOptions::Legacy)
852       .Case("non-legacy", CodeGenOptions::NonLegacy)
853       .Case("mixed", CodeGenOptions::Mixed)
854       .Default(~0U);
855     if (Method == ~0U)
856       Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
857     else
858       Opts.ObjCDispatchMethod = Method;
859   }
860 }
861 
862 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
863                                       ArgList &Args) {
864   using namespace cc1options;
865   Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
866   Opts.Targets = Args.getAllArgValues(OPT_MT);
867   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
868   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
869 }
870 
871 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
872                                 Diagnostic &Diags) {
873   using namespace cc1options;
874   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
875   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
876   Opts.Pedantic = Args.hasArg(OPT_pedantic);
877   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
878   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
879   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
880   Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
881   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
882   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
883   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
884 
885   llvm::StringRef ShowOverloads =
886     Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
887   if (ShowOverloads == "best")
888     Opts.ShowOverloads = Diagnostic::Ovl_Best;
889   else if (ShowOverloads == "all")
890     Opts.ShowOverloads = Diagnostic::Ovl_All;
891   else
892     Diags.Report(diag::err_drv_invalid_value)
893       << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
894       << ShowOverloads;
895 
896   llvm::StringRef ShowCategory =
897     Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
898   if (ShowCategory == "none")
899     Opts.ShowCategories = 0;
900   else if (ShowCategory == "id")
901     Opts.ShowCategories = 1;
902   else if (ShowCategory == "name")
903     Opts.ShowCategories = 2;
904   else
905     Diags.Report(diag::err_drv_invalid_value)
906       << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
907       << ShowCategory;
908 
909   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
910   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
911   Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
912   Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
913   Opts.MacroBacktraceLimit
914     = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
915                          DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
916   Opts.TemplateBacktraceLimit
917     = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
918                          DiagnosticOptions::DefaultTemplateBacktraceLimit,
919                          Diags);
920   Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
921                                     DiagnosticOptions::DefaultTabStop, Diags);
922   if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
923     Diags.Report(diag::warn_ignoring_ftabstop_value)
924       << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
925     Opts.TabStop = DiagnosticOptions::DefaultTabStop;
926   }
927   Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
928   Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
929   Opts.Warnings = Args.getAllArgValues(OPT_W);
930 }
931 
932 static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
933                                    Diagnostic &Diags) {
934   using namespace cc1options;
935   Opts.ProgramAction = frontend::ParseSyntaxOnly;
936   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
937     switch (A->getOption().getID()) {
938     default:
939       assert(0 && "Invalid option in group!");
940     case OPT_ast_dump:
941       Opts.ProgramAction = frontend::ASTDump; break;
942     case OPT_ast_print:
943       Opts.ProgramAction = frontend::ASTPrint; break;
944     case OPT_ast_print_xml:
945       Opts.ProgramAction = frontend::ASTPrintXML; break;
946     case OPT_ast_view:
947       Opts.ProgramAction = frontend::ASTView; break;
948     case OPT_boostcon:
949       Opts.ProgramAction = frontend::BoostCon; break;
950     case OPT_dump_raw_tokens:
951       Opts.ProgramAction = frontend::DumpRawTokens; break;
952     case OPT_dump_tokens:
953       Opts.ProgramAction = frontend::DumpTokens; break;
954     case OPT_S:
955       Opts.ProgramAction = frontend::EmitAssembly; break;
956     case OPT_emit_llvm_bc:
957       Opts.ProgramAction = frontend::EmitBC; break;
958     case OPT_emit_html:
959       Opts.ProgramAction = frontend::EmitHTML; break;
960     case OPT_emit_llvm:
961       Opts.ProgramAction = frontend::EmitLLVM; break;
962     case OPT_emit_llvm_only:
963       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
964     case OPT_emit_codegen_only:
965       Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
966     case OPT_emit_obj:
967       Opts.ProgramAction = frontend::EmitObj; break;
968     case OPT_fixit_EQ:
969       Opts.FixItSuffix = A->getValue(Args);
970       // fall-through!
971     case OPT_fixit:
972       Opts.ProgramAction = frontend::FixIt; break;
973     case OPT_emit_pch:
974       Opts.ProgramAction = frontend::GeneratePCH; break;
975     case OPT_emit_pth:
976       Opts.ProgramAction = frontend::GeneratePTH; break;
977     case OPT_init_only:
978       Opts.ProgramAction = frontend::InitOnly; break;
979     case OPT_parse_noop:
980       Opts.ProgramAction = frontend::ParseNoop; break;
981     case OPT_parse_print_callbacks:
982       Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
983     case OPT_fsyntax_only:
984       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
985     case OPT_print_decl_contexts:
986       Opts.ProgramAction = frontend::PrintDeclContext; break;
987     case OPT_E:
988       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
989     case OPT_rewrite_macros:
990       Opts.ProgramAction = frontend::RewriteMacros; break;
991     case OPT_rewrite_objc:
992       Opts.ProgramAction = frontend::RewriteObjC; break;
993     case OPT_rewrite_test:
994       Opts.ProgramAction = frontend::RewriteTest; break;
995     case OPT_analyze:
996       Opts.ProgramAction = frontend::RunAnalysis; break;
997     case OPT_Eonly:
998       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
999     }
1000   }
1001 
1002   if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1003     Opts.Plugins.push_back(A->getValue(Args,0));
1004     Opts.ProgramAction = frontend::PluginAction;
1005     Opts.ActionName = A->getValue(Args);
1006 
1007     for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1008            end = Args.filtered_end(); it != end; ++it) {
1009       if ((*it)->getValue(Args, 0) == Opts.ActionName)
1010         Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1011     }
1012   }
1013 
1014   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1015     Opts.CodeCompletionAt =
1016       ParsedSourceLocation::FromString(A->getValue(Args));
1017     if (Opts.CodeCompletionAt.FileName.empty())
1018       Diags.Report(diag::err_drv_invalid_value)
1019         << A->getAsString(Args) << A->getValue(Args);
1020   }
1021   Opts.DebugCodeCompletionPrinter =
1022     !Args.hasArg(OPT_no_code_completion_debug_printer);
1023   Opts.DisableFree = Args.hasArg(OPT_disable_free);
1024 
1025   Opts.OutputFile = Args.getLastArgValue(OPT_o);
1026   Opts.Plugins = Args.getAllArgValues(OPT_load);
1027   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1028   Opts.ShowHelp = Args.hasArg(OPT_help);
1029   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1030   Opts.ShowCodePatternsInCodeCompletion
1031     = Args.hasArg(OPT_code_completion_patterns);
1032   Opts.ShowStats = Args.hasArg(OPT_print_stats);
1033   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1034   Opts.ShowVersion = Args.hasArg(OPT_version);
1035   Opts.ViewClassInheritance = Args.getLastArgValue(OPT_cxx_inheritance_view);
1036   Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1037   Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1038 
1039   InputKind DashX = IK_None;
1040   if (const Arg *A = Args.getLastArg(OPT_x)) {
1041     DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1042       .Case("c", IK_C)
1043       .Case("cl", IK_OpenCL)
1044       .Case("c", IK_C)
1045       .Case("cl", IK_OpenCL)
1046       .Case("c++", IK_CXX)
1047       .Case("objective-c", IK_ObjC)
1048       .Case("objective-c++", IK_ObjCXX)
1049       .Case("cpp-output", IK_PreprocessedC)
1050       .Case("assembler-with-cpp", IK_Asm)
1051       .Case("c++-cpp-output", IK_PreprocessedCXX)
1052       .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1053       .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1054       .Case("c-header", IK_C)
1055       .Case("objective-c-header", IK_ObjC)
1056       .Case("c++-header", IK_CXX)
1057       .Case("objective-c++-header", IK_ObjCXX)
1058       .Case("ast", IK_AST)
1059       .Case("ir", IK_LLVM_IR)
1060       .Default(IK_None);
1061     if (DashX == IK_None)
1062       Diags.Report(diag::err_drv_invalid_value)
1063         << A->getAsString(Args) << A->getValue(Args);
1064   }
1065 
1066   // '-' is the default input if none is given.
1067   std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1068   Opts.Inputs.clear();
1069   if (Inputs.empty())
1070     Inputs.push_back("-");
1071   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1072     InputKind IK = DashX;
1073     if (IK == IK_None) {
1074       IK = FrontendOptions::getInputKindForExtension(
1075         llvm::StringRef(Inputs[i]).rsplit('.').second);
1076       // FIXME: Remove this hack.
1077       if (i == 0)
1078         DashX = IK;
1079     }
1080     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1081   }
1082 
1083   return DashX;
1084 }
1085 
1086 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1087                                                  void *MainAddr) {
1088   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1089 
1090   if (!P.isEmpty()) {
1091     P.eraseComponent();  // Remove /clang from foo/bin/clang
1092     P.eraseComponent();  // Remove /bin   from foo/bin
1093 
1094     // Get foo/lib/clang/<version>/include
1095     P.appendComponent("lib");
1096     P.appendComponent("clang");
1097     P.appendComponent(CLANG_VERSION_STRING);
1098   }
1099 
1100   return P.str();
1101 }
1102 
1103 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1104   using namespace cc1options;
1105   Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1106   Opts.Verbose = Args.hasArg(OPT_v);
1107   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1108   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1109   Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1110   Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1111 
1112   // Add -I... and -F... options in order.
1113   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1114          ie = Args.filtered_end(); it != ie; ++it)
1115     Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1116                  /*IsFramework=*/ (*it)->getOption().matches(OPT_F));
1117 
1118   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1119   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1120   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1121                                              OPT_iwithprefixbefore),
1122          ie = Args.filtered_end(); it != ie; ++it) {
1123     const Arg *A = *it;
1124     if (A->getOption().matches(OPT_iprefix))
1125       Prefix = A->getValue(Args);
1126     else if (A->getOption().matches(OPT_iwithprefix))
1127       Opts.AddPath(Prefix.str() + A->getValue(Args),
1128                    frontend::System, false, false);
1129     else
1130       Opts.AddPath(Prefix.str() + A->getValue(Args),
1131                    frontend::Angled, false, false);
1132   }
1133 
1134   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1135          ie = Args.filtered_end(); it != ie; ++it)
1136     Opts.AddPath((*it)->getValue(Args), frontend::After, true, false);
1137   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1138          ie = Args.filtered_end(); it != ie; ++it)
1139     Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false);
1140   for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1141          ie = Args.filtered_end(); it != ie; ++it)
1142     Opts.AddPath((*it)->getValue(Args), frontend::System, true, false);
1143 
1144   // FIXME: Need options for the various environment variables!
1145 }
1146 
1147 static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1148                           Diagnostic &Diags) {
1149   // FIXME: Cleanup per-file based stuff.
1150 
1151   // Set some properties which depend soley 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   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1164   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1165     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1166 #define LANGSTANDARD(id, name, desc, features) \
1167       .Case(name, LangStandard::lang_##id)
1168 #include "clang/Frontend/LangStandards.def"
1169       .Default(LangStandard::lang_unspecified);
1170     if (LangStd == LangStandard::lang_unspecified)
1171       Diags.Report(diag::err_drv_invalid_value)
1172         << A->getAsString(Args) << A->getValue(Args);
1173   }
1174 
1175   if (LangStd == LangStandard::lang_unspecified) {
1176     // Based on the base language, pick one.
1177     switch (IK) {
1178     case IK_None:
1179     case IK_AST:
1180     case IK_LLVM_IR:
1181       assert(0 && "Invalid input kind!");
1182     case IK_OpenCL:
1183       LangStd = LangStandard::lang_opencl;
1184       break;
1185     case IK_Asm:
1186     case IK_C:
1187     case IK_PreprocessedC:
1188     case IK_ObjC:
1189     case IK_PreprocessedObjC:
1190       LangStd = LangStandard::lang_gnu99;
1191       break;
1192     case IK_CXX:
1193     case IK_PreprocessedCXX:
1194     case IK_ObjCXX:
1195     case IK_PreprocessedObjCXX:
1196       LangStd = LangStandard::lang_gnucxx98;
1197       break;
1198     }
1199   }
1200 
1201   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1202   Opts.BCPLComment = Std.hasBCPLComments();
1203   Opts.C99 = Std.isC99();
1204   Opts.CPlusPlus = Std.isCPlusPlus();
1205   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1206   Opts.Digraphs = Std.hasDigraphs();
1207   Opts.GNUMode = Std.isGNUMode();
1208   Opts.GNUInline = !Std.isC99();
1209   Opts.HexFloats = Std.hasHexFloats();
1210   Opts.ImplicitInt = Std.hasImplicitInt();
1211 
1212   // OpenCL has some additional defaults.
1213   if (LangStd == LangStandard::lang_opencl) {
1214     Opts.OpenCL = 1;
1215     Opts.AltiVec = 1;
1216     Opts.CXXOperatorNames = 1;
1217     Opts.LaxVectorConversions = 1;
1218   }
1219 
1220   // OpenCL and C++ both have bool, true, false keywords.
1221   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1222 
1223   // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1224   // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1225   // while a subset (the non-C++ GNU keywords) is provided by GCC's
1226   // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1227   // name, as it doesn't seem a useful distinction.
1228   Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1229                                   Opts.GNUMode);
1230 
1231   if (Opts.CPlusPlus)
1232     Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1233 
1234   if (Args.hasArg(OPT_fobjc_gc_only))
1235     Opts.setGCMode(LangOptions::GCOnly);
1236   else if (Args.hasArg(OPT_fobjc_gc))
1237     Opts.setGCMode(LangOptions::HybridGC);
1238 
1239   if (Args.hasArg(OPT_print_ivar_layout))
1240     Opts.ObjCGCBitmapPrint = 1;
1241   if (Args.hasArg(OPT_fno_constant_cfstrings))
1242     Opts.NoConstantCFStrings = 1;
1243 
1244   if (Args.hasArg(OPT_faltivec))
1245     Opts.AltiVec = 1;
1246 
1247   if (Args.hasArg(OPT_pthread))
1248     Opts.POSIXThreads = 1;
1249 
1250   llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1251   if (Vis == "default")
1252     Opts.setVisibilityMode(LangOptions::Default);
1253   else if (Vis == "hidden")
1254     Opts.setVisibilityMode(LangOptions::Hidden);
1255   else if (Vis == "protected")
1256     Opts.setVisibilityMode(LangOptions::Protected);
1257   else
1258     Diags.Report(diag::err_drv_invalid_value)
1259       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1260 
1261   if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1262     Opts.InlineVisibilityHidden = 1;
1263 
1264   if (Args.hasArg(OPT_ftrapv))
1265     Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1266   else if (Args.hasArg(OPT_fwrapv))
1267     Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1268 
1269   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1270   // is specified, or -std is set to a conforming mode.
1271   Opts.Trigraphs = !Opts.GNUMode;
1272   if (Args.hasArg(OPT_trigraphs))
1273     Opts.Trigraphs = 1;
1274 
1275   Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1276                                    OPT_fno_dollars_in_identifiers,
1277                                    !Opts.AsmPreprocessor);
1278   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1279   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1280   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1281   Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1282   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1283     Opts.LaxVectorConversions = 0;
1284   if (Args.hasArg(OPT_fno_threadsafe_statics))
1285     Opts.ThreadsafeStatics = 0;
1286   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1287   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1288   Opts.Blocks = Args.hasArg(OPT_fblocks);
1289   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1290   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1291   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1292   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1293   Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1294   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1295   Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1296   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1297   Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1298   Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1299                                                Diags);
1300   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1301   Opts.ObjCConstantStringClass =
1302     Args.getLastArgValue(OPT_fconstant_string_class);
1303   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1304   Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1305   if (Opts.ObjCNonFragileABI2)
1306     Opts.ObjCNonFragileABI = true;
1307   Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1308   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1309   Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1310   Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1311   Opts.Static = Args.hasArg(OPT_static_define);
1312   Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1313   Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1314   Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1315   Opts.OptimizeSize = 0;
1316 
1317   // FIXME: Eliminate this dependency.
1318   unsigned Opt =
1319     Args.hasArg(OPT_Os) ? 2 : Args.getLastArgIntValue(OPT_O, 0, Diags);
1320   Opts.Optimize = Opt != 0;
1321 
1322   // This is the __NO_INLINE__ define, which just depends on things like the
1323   // optimization level and -fno-inline, not actually whether the backend has
1324   // inlining enabled.
1325   //
1326   // FIXME: This is affected by other options (-fno-inline).
1327   Opts.NoInline = !Opt;
1328 
1329   unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1330   switch (SSP) {
1331   default:
1332     Diags.Report(diag::err_drv_invalid_value)
1333       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1334     break;
1335   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1336   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1337   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1338   }
1339 }
1340 
1341 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1342                                   Diagnostic &Diags) {
1343   using namespace cc1options;
1344   Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1345   Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1346   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1347       Opts.TokenCache = A->getValue(Args);
1348   else
1349     Opts.TokenCache = Opts.ImplicitPTHInclude;
1350   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1351   Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1352   // Add macros from the command line.
1353   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1354          ie = Args.filtered_end(); it != ie; ++it) {
1355     if ((*it)->getOption().matches(OPT_D))
1356       Opts.addMacroDef((*it)->getValue(Args));
1357     else
1358       Opts.addMacroUndef((*it)->getValue(Args));
1359   }
1360 
1361   Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1362 
1363   // Add the ordered list of -includes.
1364   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1365                                              OPT_include_pth),
1366          ie = Args.filtered_end(); it != ie; ++it) {
1367     const Arg *A = *it;
1368     // PCH is handled specially, we need to extra the original include path.
1369     if (A->getOption().matches(OPT_include_pch)) {
1370       std::string OriginalFile =
1371         PCHReader::getOriginalSourceFile(A->getValue(Args), Diags);
1372       if (OriginalFile.empty())
1373         continue;
1374 
1375       Opts.Includes.push_back(OriginalFile);
1376     } else
1377       Opts.Includes.push_back(A->getValue(Args));
1378   }
1379 
1380   // Include 'altivec.h' if -faltivec option present
1381   if (Args.hasArg(OPT_faltivec))
1382     Opts.Includes.push_back("altivec.h");
1383 
1384   for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1385          ie = Args.filtered_end(); it != ie; ++it) {
1386     const Arg *A = *it;
1387     std::pair<llvm::StringRef,llvm::StringRef> Split =
1388       llvm::StringRef(A->getValue(Args)).split(';');
1389 
1390     if (Split.second.empty()) {
1391       Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1392       continue;
1393     }
1394 
1395     Opts.addRemappedFile(Split.first, Split.second);
1396   }
1397 }
1398 
1399 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1400                                         ArgList &Args) {
1401   using namespace cc1options;
1402   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1403   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1404   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1405   Opts.ShowComments = Args.hasArg(OPT_C);
1406   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1407 }
1408 
1409 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1410   using namespace cc1options;
1411   Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1412   Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1413   Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1414   Opts.Triple = Args.getLastArgValue(OPT_triple);
1415   Opts.Features = Args.getAllArgValues(OPT_target_feature);
1416 
1417   // Use the host triple if unspecified.
1418   if (Opts.Triple.empty())
1419     Opts.Triple = llvm::sys::getHostTriple();
1420 
1421   // Use the Itanium C++ ABI if unspecified.
1422   if (Opts.CXXABI.empty())
1423     Opts.CXXABI = "itanium";
1424 }
1425 
1426 //
1427 
1428 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1429                                         const char **ArgBegin,
1430                                         const char **ArgEnd,
1431                                         Diagnostic &Diags) {
1432   // Parse the arguments.
1433   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1434   unsigned MissingArgIndex, MissingArgCount;
1435   llvm::OwningPtr<InputArgList> Args(
1436     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1437 
1438   // Check for missing argument error.
1439   if (MissingArgCount)
1440     Diags.Report(diag::err_drv_missing_argument)
1441       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1442 
1443   // Issue errors on unknown arguments.
1444   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1445          ie = Args->filtered_end(); it != ie; ++it)
1446     Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1447 
1448   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1449   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1450   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1451   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1452   InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1453   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1454   if (DashX != IK_AST && DashX != IK_LLVM_IR)
1455     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1456   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1457   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1458   ParseTargetArgs(Res.getTargetOpts(), *Args);
1459 }
1460