xref: /llvm-project/clang/lib/Frontend/CompilerInvocation.cpp (revision 63408e848bdb8a2a37d51a0ebcc233f849ae498e) 
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   // VerifyModule is only derived.
149   // Inlining is only derived.
150 
151   if (Opts.DataSections)
152     Res.push_back("-fdata-sections");
153   if (Opts.FunctionSections)
154     Res.push_back("-ffunction-sections");
155   if (Opts.AsmVerbose)
156     Res.push_back("-masm-verbose");
157   if (!Opts.CodeModel.empty()) {
158     Res.push_back("-mcode-model");
159     Res.push_back(Opts.CodeModel);
160   }
161   if (!Opts.CXAAtExit)
162     Res.push_back("-fno-use-cxa-atexit");
163   if (Opts.CXXCtorDtorAliases)
164     Res.push_back("-mconstructor-aliases");
165   if (!Opts.DebugPass.empty()) {
166     Res.push_back("-mdebug-pass");
167     Res.push_back(Opts.DebugPass);
168   }
169   if (Opts.DisableFPElim)
170     Res.push_back("-mdisable-fp-elim");
171   if (!Opts.FloatABI.empty()) {
172     Res.push_back("-mfloat-abi");
173     Res.push_back(Opts.FloatABI);
174   }
175   if (!Opts.LimitFloatPrecision.empty()) {
176     Res.push_back("-mlimit-float-precision");
177     Res.push_back(Opts.LimitFloatPrecision);
178   }
179   if (Opts.NoZeroInitializedInBSS)
180     Res.push_back("-mno-zero-initialized-bss");
181   if (Opts.ObjCLegacyDispatch)
182     Res.push_back("-fobjc-legacy-dispatch");
183   if (Opts.SoftFloat)
184     Res.push_back("-msoft-float");
185   if (Opts.UnwindTables)
186     Res.push_back("-munwind-tables");
187   if (Opts.RelocationModel != "pic") {
188     Res.push_back("-mrelocation-model");
189     Res.push_back(Opts.RelocationModel);
190   }
191   if (!Opts.VerifyModule)
192     Res.push_back("-disable-llvm-verifier");
193 }
194 
195 static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
196                                        std::vector<std::string> &Res) {
197   if (Opts.IncludeSystemHeaders)
198     Res.push_back("-sys-header-deps");
199   if (Opts.UsePhonyTargets)
200     Res.push_back("-MP");
201   if (!Opts.OutputFile.empty()) {
202     Res.push_back("-dependency-file");
203     Res.push_back(Opts.OutputFile);
204   }
205   for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
206     Res.push_back("-MT");
207     Res.push_back(Opts.Targets[i]);
208   }
209 }
210 
211 static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
212                                  std::vector<std::string> &Res) {
213   if (Opts.IgnoreWarnings)
214     Res.push_back("-w");
215   if (Opts.NoRewriteMacros)
216     Res.push_back("-Wno-rewrite-macros");
217   if (Opts.Pedantic)
218     Res.push_back("-pedantic");
219   if (Opts.PedanticErrors)
220     Res.push_back("-pedantic-errors");
221   if (!Opts.ShowColumn)
222     Res.push_back("-fno-show-column");
223   if (!Opts.ShowLocation)
224     Res.push_back("-fno-show-source-location");
225   if (!Opts.ShowCarets)
226     Res.push_back("-fno-caret-diagnostics");
227   if (!Opts.ShowFixits)
228     Res.push_back("-fno-diagnostics-fixit-info");
229   if (Opts.ShowSourceRanges)
230     Res.push_back("-fdiagnostics-print-source-range-info");
231   if (Opts.ShowColors)
232     Res.push_back("-fcolor-diagnostics");
233   if (Opts.VerifyDiagnostics)
234     Res.push_back("-verify");
235   if (Opts.BinaryOutput)
236     Res.push_back("-fdiagnostics-binary");
237   if (Opts.ShowOptionNames)
238     Res.push_back("-fdiagnostics-show-option");
239   if (Opts.ErrorLimit) {
240     Res.push_back("-ferror-limit");
241     Res.push_back(llvm::utostr(Opts.ErrorLimit));
242   }
243   if (Opts.TemplateBacktraceLimit != 10) {
244     Res.push_back("-ftemplate-backtrace-limit");
245     Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
246   }
247 
248   if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
249     Res.push_back("-ftabstop");
250     Res.push_back(llvm::utostr(Opts.TabStop));
251   }
252   if (Opts.MessageLength) {
253     Res.push_back("-fmessage-length");
254     Res.push_back(llvm::utostr(Opts.MessageLength));
255   }
256   if (!Opts.DumpBuildInformation.empty()) {
257     Res.push_back("-dump-build-information");
258     Res.push_back(Opts.DumpBuildInformation);
259   }
260   for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
261     Res.push_back("-W" + Opts.Warnings[i]);
262 }
263 
264 static const char *getInputKindName(FrontendOptions::InputKind Kind) {
265   switch (Kind) {
266   case FrontendOptions::IK_None:              break;
267   case FrontendOptions::IK_AST:               return "ast";
268   case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
269   case FrontendOptions::IK_C:                 return "c";
270   case FrontendOptions::IK_CXX:               return "c++";
271   case FrontendOptions::IK_ObjC:              return "objective-c";
272   case FrontendOptions::IK_ObjCXX:            return "objective-c++";
273   case FrontendOptions::IK_OpenCL:            return "cl";
274   case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
275   case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
276   case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
277   case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
278   }
279 
280   llvm_unreachable("Unexpected language kind!");
281   return 0;
282 }
283 
284 static const char *getActionName(frontend::ActionKind Kind) {
285   switch (Kind) {
286   case frontend::PluginAction:
287   case frontend::InheritanceView:
288     llvm_unreachable("Invalid kind!");
289 
290   case frontend::ASTDump:                return "-ast-dump";
291   case frontend::ASTPrint:               return "-ast-print";
292   case frontend::ASTPrintXML:            return "-ast-print-xml";
293   case frontend::ASTView:                return "-ast-view";
294   case frontend::DumpRawTokens:          return "-dump-raw-tokens";
295   case frontend::DumpTokens:             return "-dump-tokens";
296   case frontend::EmitAssembly:           return "-S";
297   case frontend::EmitBC:                 return "-emit-llvm-bc";
298   case frontend::EmitHTML:               return "-emit-html";
299   case frontend::EmitLLVM:               return "-emit-llvm";
300   case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
301   case frontend::EmitObj:                return "-emit-obj";
302   case frontend::FixIt:                  return "-fixit";
303   case frontend::GeneratePCH:            return "-emit-pch";
304   case frontend::GeneratePTH:            return "-emit-pth";
305   case frontend::InitOnly:               return "-init-only";
306   case frontend::ParseNoop:              return "-parse-noop";
307   case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
308   case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
309   case frontend::PrintDeclContext:       return "-print-decl-contexts";
310   case frontend::PrintPreprocessedInput: return "-E";
311   case frontend::RewriteMacros:          return "-rewrite-macros";
312   case frontend::RewriteObjC:            return "-rewrite-objc";
313   case frontend::RewriteTest:            return "-rewrite-test";
314   case frontend::RunAnalysis:            return "-analyze";
315   case frontend::RunPreprocessorOnly:    return "-Eonly";
316   }
317 
318   llvm_unreachable("Unexpected language kind!");
319   return 0;
320 }
321 
322 static void FrontendOptsToArgs(const FrontendOptions &Opts,
323                                std::vector<std::string> &Res) {
324   if (!Opts.DebugCodeCompletionPrinter)
325     Res.push_back("-no-code-completion-debug-printer");
326   if (Opts.DisableFree)
327     Res.push_back("-disable-free");
328   if (Opts.RelocatablePCH)
329     Res.push_back("-relocatable-pch");
330   if (Opts.ShowHelp)
331     Res.push_back("-help");
332   if (Opts.ShowMacrosInCodeCompletion)
333     Res.push_back("-code-completion-macros");
334   if (Opts.ShowStats)
335     Res.push_back("-print-stats");
336   if (Opts.ShowTimers)
337     Res.push_back("-ftime-report");
338   if (Opts.ShowVersion)
339     Res.push_back("-version");
340 
341   bool NeedLang = false;
342   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
343     if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
344         Opts.Inputs[i].first)
345       NeedLang = true;
346   if (NeedLang) {
347     Res.push_back("-x");
348     Res.push_back(getInputKindName(Opts.Inputs[0].first));
349   }
350   for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
351     assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
352            "Unable to represent this input vector!");
353     Res.push_back(Opts.Inputs[i].second);
354   }
355 
356   if (!Opts.OutputFile.empty()) {
357     Res.push_back("-o");
358     Res.push_back(Opts.OutputFile);
359   }
360   if (!Opts.ViewClassInheritance.empty()) {
361     Res.push_back("-cxx-inheritance-view");
362     Res.push_back(Opts.ViewClassInheritance);
363   }
364   for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
365     Res.push_back("-fixit-at");
366     Res.push_back(Opts.FixItLocations[i].FileName + ":" +
367                   llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
368                   llvm::utostr(Opts.FixItLocations[i].Column));
369   }
370   if (!Opts.CodeCompletionAt.FileName.empty()) {
371     Res.push_back("-code-completion-at");
372     Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
373                   llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
374                   llvm::utostr(Opts.CodeCompletionAt.Column));
375   }
376   if (Opts.ProgramAction != frontend::InheritanceView &&
377       Opts.ProgramAction != frontend::PluginAction)
378     Res.push_back(getActionName(Opts.ProgramAction));
379   if (!Opts.ActionName.empty()) {
380     Res.push_back("-plugin");
381     Res.push_back(Opts.ActionName);
382   }
383   for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
384     Res.push_back("-load");
385     Res.push_back(Opts.Plugins[i]);
386   }
387   for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
388     Res.push_back("-ast-merge");
389     Res.push_back(Opts.ASTMergeFiles[i]);
390   }
391   for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
392     Res.push_back("-mllvm");
393     Res.push_back(Opts.LLVMArgs[i]);
394   }
395 }
396 
397 static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
398                                    std::vector<std::string> &Res) {
399   if (Opts.Sysroot != "/") {
400     Res.push_back("-isysroot");
401     Res.push_back(Opts.Sysroot);
402   }
403 
404   /// User specified include entries.
405   for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
406     const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
407     if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
408       llvm::report_fatal_error("Invalid option set!");
409     if (E.IsUserSupplied) {
410       if (E.Group == frontend::After) {
411         Res.push_back("-idirafter");
412       } else if (E.Group == frontend::Quoted) {
413         Res.push_back("-iquote");
414       } else if (E.Group == frontend::System) {
415         Res.push_back("-isystem");
416       } else {
417         assert(E.Group == frontend::Angled && "Invalid group!");
418         Res.push_back(E.IsFramework ? "-F" : "-I");
419       }
420     } else {
421       if (E.Group != frontend::Angled && E.Group != frontend::System)
422         llvm::report_fatal_error("Invalid option set!");
423       Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
424                     "-iwithprefix");
425     }
426     Res.push_back(E.Path);
427   }
428 
429   if (!Opts.EnvIncPath.empty()) {
430     // FIXME: Provide an option for this, and move env detection to driver.
431     llvm::report_fatal_error("Not yet implemented!");
432   }
433   if (!Opts.CEnvIncPath.empty()) {
434     // FIXME: Provide an option for this, and move env detection to driver.
435     llvm::report_fatal_error("Not yet implemented!");
436   }
437   if (!Opts.ObjCEnvIncPath.empty()) {
438     // FIXME: Provide an option for this, and move env detection to driver.
439     llvm::report_fatal_error("Not yet implemented!");
440   }
441   if (!Opts.CXXEnvIncPath.empty()) {
442     // FIXME: Provide an option for this, and move env detection to driver.
443     llvm::report_fatal_error("Not yet implemented!");
444   }
445   if (!Opts.ObjCXXEnvIncPath.empty()) {
446     // FIXME: Provide an option for this, and move env detection to driver.
447     llvm::report_fatal_error("Not yet implemented!");
448   }
449   if (!Opts.ResourceDir.empty()) {
450     Res.push_back("-resource-dir");
451     Res.push_back(Opts.ResourceDir);
452   }
453   if (!Opts.UseStandardIncludes)
454     Res.push_back("-nostdinc");
455   if (!Opts.UseStandardCXXIncludes)
456     Res.push_back("-nostdinc++");
457   if (Opts.Verbose)
458     Res.push_back("-v");
459 }
460 
461 static void LangOptsToArgs(const LangOptions &Opts,
462                            std::vector<std::string> &Res) {
463   LangOptions DefaultLangOpts;
464 
465   // FIXME: Need to set -std to get all the implicit options.
466 
467   // FIXME: We want to only pass options relative to the defaults, which
468   // requires constructing a target. :(
469   //
470   // It would be better to push the all target specific choices into the driver,
471   // so that everything below that was more uniform.
472 
473   if (Opts.Trigraphs)
474     Res.push_back("-trigraphs");
475   // Implicit based on the input kind:
476   //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
477   // Implicit based on the input language standard:
478   //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
479   if (Opts.DollarIdents)
480     Res.push_back("-fdollars-in-identifiers");
481   if (Opts.GNUMode && !Opts.GNUKeywords)
482     Res.push_back("-fno-gnu-keywords");
483   if (!Opts.GNUMode && Opts.GNUKeywords)
484     Res.push_back("-fgnu-keywords");
485   if (Opts.Microsoft)
486     Res.push_back("-fms-extensions");
487   if (Opts.ObjCNonFragileABI)
488     Res.push_back("-fobjc-nonfragile-abi");
489   if (Opts.ObjCNonFragileABI2)
490     Res.push_back("-fobjc-nonfragile-abi2");
491   // NoInline is implicit.
492   if (!Opts.CXXOperatorNames)
493     Res.push_back("-fno-operator-names");
494   if (Opts.PascalStrings)
495     Res.push_back("-fpascal-strings");
496   if (Opts.CatchUndefined)
497     Res.push_back("-fcatch-undefined-behavior");
498   if (Opts.WritableStrings)
499     Res.push_back("-fwritable-strings");
500   if (Opts.ConstStrings)
501     Res.push_back("-Wwrite-strings");
502   if (!Opts.LaxVectorConversions)
503     Res.push_back("-fno-lax-vector-conversions");
504   if (Opts.AltiVec)
505     Res.push_back("-faltivec");
506   if (Opts.Exceptions)
507     Res.push_back("-fexceptions");
508   if (Opts.SjLjExceptions)
509     Res.push_back("-fsjlj-exceptions");
510   if (!Opts.RTTI)
511     Res.push_back("-fno-rtti");
512   if (!Opts.NeXTRuntime)
513     Res.push_back("-fgnu-runtime");
514   if (Opts.Freestanding)
515     Res.push_back("-ffreestanding");
516   if (Opts.NoBuiltin)
517     Res.push_back("-fno-builtin");
518   if (!Opts.AssumeSaneOperatorNew)
519     Res.push_back("-fno-assume-sane-operator-new");
520   if (!Opts.ThreadsafeStatics)
521     Res.push_back("-fno-threadsafe-statics");
522   if (Opts.POSIXThreads)
523     Res.push_back("-pthread");
524   if (Opts.Blocks)
525     Res.push_back("-fblocks");
526   if (Opts.EmitAllDecls)
527     Res.push_back("-femit-all-decls");
528   if (Opts.MathErrno)
529     Res.push_back("-fmath-errno");
530   if (Opts.OverflowChecking)
531     Res.push_back("-ftrapv");
532   if (Opts.HeinousExtensions)
533     Res.push_back("-fheinous-gnu-extensions");
534   // Optimize is implicit.
535   // OptimizeSize is implicit.
536   if (Opts.Static)
537     Res.push_back("-static-define");
538   if (Opts.DumpRecordLayouts)
539     Res.push_back("-fdump-record-layouts");
540   if (Opts.DumpVTableLayouts)
541     Res.push_back("-fdump-vtable-layouts");
542   if (Opts.NoBitFieldTypeAlign)
543     Res.push_back("-fno-bitfield-type-alignment");
544   if (Opts.SjLjExceptions)
545     Res.push_back("-fsjlj-exceptions");
546   if (Opts.PICLevel) {
547     Res.push_back("-pic-level");
548     Res.push_back(llvm::utostr(Opts.PICLevel));
549   }
550   if (Opts.ObjCGCBitmapPrint)
551     Res.push_back("-print-ivar-layout");
552   if (Opts.NoConstantCFStrings)
553     Res.push_back("-fno-constant-cfstrings");
554   if (!Opts.AccessControl)
555     Res.push_back("-fno-access-control");
556   if (!Opts.CharIsSigned)
557     Res.push_back("-fno-signed-char");
558   if (Opts.ShortWChar)
559     Res.push_back("-fshort-wchar");
560   if (!Opts.ElideConstructors)
561     Res.push_back("-fno-elide-constructors");
562   if (Opts.getGCMode() != LangOptions::NonGC) {
563     if (Opts.getGCMode() == LangOptions::HybridGC) {
564       Res.push_back("-fobjc-gc");
565     } else {
566       assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
567       Res.push_back("-fobjc-gc-only");
568     }
569   }
570   if (Opts.getVisibilityMode() != LangOptions::Default) {
571     Res.push_back("-fvisibility");
572     if (Opts.getVisibilityMode() == LangOptions::Hidden) {
573       Res.push_back("hidden");
574     } else {
575       assert(Opts.getVisibilityMode() == LangOptions::Protected &&
576              "Invalid visibility!");
577       Res.push_back("protected");
578     }
579   }
580   if (Opts.getStackProtectorMode() != 0) {
581     Res.push_back("-stack-protector");
582     Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
583   }
584   if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
585     Res.push_back("-ftemplate-depth");
586     Res.push_back(llvm::utostr(Opts.InstantiationDepth));
587   }
588   if (!Opts.ObjCConstantStringClass.empty()) {
589     Res.push_back("-fconstant-string-class");
590     Res.push_back(Opts.ObjCConstantStringClass);
591   }
592 }
593 
594 static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
595                                    std::vector<std::string> &Res) {
596   for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
597     Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
598                   Opts.Macros[i].first);
599   for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
600     // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
601     Res.push_back("-include");
602     Res.push_back(Opts.Includes[i]);
603   }
604   for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
605     Res.push_back("-imacros");
606     Res.push_back(Opts.MacroIncludes[i]);
607   }
608   if (!Opts.UsePredefines)
609     Res.push_back("-undef");
610   if (Opts.DetailedRecord)
611     Res.push_back("-detailed-preprocessing-record");
612   if (!Opts.ImplicitPCHInclude.empty()) {
613     Res.push_back("-include-pch");
614     Res.push_back(Opts.ImplicitPCHInclude);
615   }
616   if (!Opts.ImplicitPTHInclude.empty()) {
617     Res.push_back("-include-pth");
618     Res.push_back(Opts.ImplicitPTHInclude);
619   }
620   if (!Opts.TokenCache.empty()) {
621     if (Opts.ImplicitPTHInclude.empty()) {
622       Res.push_back("-token-cache");
623       Res.push_back(Opts.TokenCache);
624     } else
625       assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
626              "Unsupported option combination!");
627   }
628   for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
629     Res.push_back("-remap-file");
630     Res.push_back(Opts.RemappedFiles[i].first + ";" +
631                   Opts.RemappedFiles[i].second);
632   }
633 }
634 
635 static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
636                                          std::vector<std::string> &Res) {
637   if (!Opts.ShowCPP && !Opts.ShowMacros)
638     llvm::report_fatal_error("Invalid option combination!");
639 
640   if (Opts.ShowCPP && Opts.ShowMacros)
641     Res.push_back("-dD");
642   else if (!Opts.ShowCPP && Opts.ShowMacros)
643     Res.push_back("-dM");
644 
645   if (!Opts.ShowLineMarkers)
646     Res.push_back("-P");
647   if (Opts.ShowComments)
648     Res.push_back("-C");
649   if (Opts.ShowMacroComments)
650     Res.push_back("-CC");
651 }
652 
653 static void TargetOptsToArgs(const TargetOptions &Opts,
654                              std::vector<std::string> &Res) {
655   Res.push_back("-triple");
656   Res.push_back(Opts.Triple);
657   if (!Opts.CPU.empty()) {
658     Res.push_back("-target-cpu");
659     Res.push_back(Opts.CPU);
660   }
661   if (!Opts.ABI.empty()) {
662     Res.push_back("-target-abi");
663     Res.push_back(Opts.ABI);
664   }
665   for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
666     Res.push_back("-target-feature");
667     Res.push_back(Opts.Features[i]);
668   }
669 }
670 
671 void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
672   AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
673   CodeGenOptsToArgs(getCodeGenOpts(), Res);
674   DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
675   DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
676   FrontendOptsToArgs(getFrontendOpts(), Res);
677   HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
678   LangOptsToArgs(getLangOpts(), Res);
679   PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
680   PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
681   TargetOptsToArgs(getTargetOpts(), Res);
682 }
683 
684 //===----------------------------------------------------------------------===//
685 // Deserialization (to args)
686 //===----------------------------------------------------------------------===//
687 
688 using namespace clang::driver;
689 using namespace clang::driver::cc1options;
690 
691 static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
692                                        llvm::StringRef Default = "") {
693   if (Arg *A = Args.getLastArg(ID))
694     return A->getValue(Args);
695   return Default;
696 }
697 
698 static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
699                               int Default, Diagnostic &Diags) {
700   Arg *A = Args.getLastArg(ID);
701   if (!A)
702     return Default;
703 
704   int Res = Default;
705   if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
706     Diags.Report(diag::err_drv_invalid_int_value)
707         << A->getAsString(Args) << A->getValue(Args);
708 
709   return Res;
710 }
711 
712 static std::vector<std::string>
713 getAllArgValues(ArgList &Args, cc1options::ID ID) {
714   llvm::SmallVector<const char *, 16> Values;
715   Args.AddAllArgValues(Values, ID);
716   return std::vector<std::string>(Values.begin(), Values.end());
717 }
718 
719 //
720 
721 static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
722                               Diagnostic &Diags) {
723   using namespace cc1options;
724 
725   Opts.AnalysisList.clear();
726 #define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
727   if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
728 #include "clang/Frontend/Analyses.def"
729 
730   if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
731     llvm::StringRef Name = A->getValue(Args);
732     AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
733 #define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
734       .Case(CMDFLAG, NAME##Model)
735 #include "clang/Frontend/Analyses.def"
736       .Default(NumStores);
737     // FIXME: Error handling.
738     if (Value == NumStores)
739       Diags.Report(diag::err_drv_invalid_value)
740         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
741     else
742       Opts.AnalysisStoreOpt = Value;
743   }
744 
745   if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
746     llvm::StringRef Name = A->getValue(Args);
747     AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
748 #define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
749       .Case(CMDFLAG, NAME##Model)
750 #include "clang/Frontend/Analyses.def"
751       .Default(NumConstraints);
752     // FIXME: Error handling.
753     if (Value == NumConstraints)
754       Diags.Report(diag::err_drv_invalid_value)
755         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
756     else
757       Opts.AnalysisConstraintsOpt = Value;
758   }
759 
760   if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
761     llvm::StringRef Name = A->getValue(Args);
762     AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
763 #define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
764       .Case(CMDFLAG, PD_##NAME)
765 #include "clang/Frontend/Analyses.def"
766       .Default(NUM_ANALYSIS_DIAG_CLIENTS);
767     // FIXME: Error handling.
768     if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
769       Diags.Report(diag::err_drv_invalid_value)
770         << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
771     else
772       Opts.AnalysisDiagOpt = Value;
773   }
774 
775   Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
776   Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
777   Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
778   Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
779   Opts.AnalyzeNestedBlocks =
780     Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
781   Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
782   Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
783   Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
784   Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
785   Opts.EnableExperimentalInternalChecks =
786     Args.hasArg(OPT_analyzer_experimental_internal_checks);
787   Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
788   Opts.MaxNodes = getLastArgIntValue(Args, OPT_analyzer_max_nodes,150000,Diags);
789 }
790 
791 static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
792                              Diagnostic &Diags) {
793   using namespace cc1options;
794   // -Os implies -O2
795   if (Args.hasArg(OPT_Os))
796     Opts.OptimizationLevel = 2;
797   else {
798     Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
799     if (Opts.OptimizationLevel > 3) {
800       Diags.Report(diag::err_drv_invalid_value)
801         << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
802       Opts.OptimizationLevel = 3;
803     }
804   }
805 
806   // We must always run at least the always inlining pass.
807   Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
808     : CodeGenOptions::OnlyAlwaysInlining;
809 
810   Opts.DebugInfo = Args.hasArg(OPT_g);
811   Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
812   Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
813   Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
814   Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
815   Opts.NoCommon = Args.hasArg(OPT_fno_common);
816   Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
817   Opts.OptimizeSize = Args.hasArg(OPT_Os);
818   Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
819 
820   Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
821   Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
822   Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
823   Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
824   Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
825   Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
826   Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
827   Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
828   Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
829   Opts.ObjCLegacyDispatch = Args.hasArg(OPT_fobjc_legacy_dispatch);
830   Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
831   Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
832   Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
833 
834   Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
835   Opts.DataSections = Args.hasArg(OPT_fdata_sections);
836 
837   Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
838   Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
839 }
840 
841 static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
842                                       ArgList &Args) {
843   using namespace cc1options;
844   Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
845   Opts.Targets = getAllArgValues(Args, OPT_MT);
846   Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
847   Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
848 }
849 
850 static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
851                                 Diagnostic &Diags) {
852   using namespace cc1options;
853   Opts.IgnoreWarnings = Args.hasArg(OPT_w);
854   Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
855   Opts.Pedantic = Args.hasArg(OPT_pedantic);
856   Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
857   Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
858   Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
859   Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
860   Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
861   Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
862   Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
863   Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
864   Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
865   Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
866   Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
867   Opts.TemplateBacktraceLimit
868     = getLastArgIntValue(Args, OPT_ftemplate_backtrace_limit, 0, Diags);
869   Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
870                                     DiagnosticOptions::DefaultTabStop, Diags);
871   if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
872     Diags.Report(diag::warn_ignoring_ftabstop_value)
873       << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
874     Opts.TabStop = DiagnosticOptions::DefaultTabStop;
875   }
876   Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
877   Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
878   Opts.Warnings = getAllArgValues(Args, OPT_W);
879 }
880 
881 static FrontendOptions::InputKind
882 ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
883   using namespace cc1options;
884   Opts.ProgramAction = frontend::ParseSyntaxOnly;
885   if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
886     switch (A->getOption().getID()) {
887     default:
888       assert(0 && "Invalid option in group!");
889     case OPT_ast_dump:
890       Opts.ProgramAction = frontend::ASTDump; break;
891     case OPT_ast_print:
892       Opts.ProgramAction = frontend::ASTPrint; break;
893     case OPT_ast_print_xml:
894       Opts.ProgramAction = frontend::ASTPrintXML; break;
895     case OPT_ast_view:
896       Opts.ProgramAction = frontend::ASTView; break;
897     case OPT_dump_raw_tokens:
898       Opts.ProgramAction = frontend::DumpRawTokens; break;
899     case OPT_dump_tokens:
900       Opts.ProgramAction = frontend::DumpTokens; break;
901     case OPT_S:
902       Opts.ProgramAction = frontend::EmitAssembly; break;
903     case OPT_emit_llvm_bc:
904       Opts.ProgramAction = frontend::EmitBC; break;
905     case OPT_emit_html:
906       Opts.ProgramAction = frontend::EmitHTML; break;
907     case OPT_emit_llvm:
908       Opts.ProgramAction = frontend::EmitLLVM; break;
909     case OPT_emit_llvm_only:
910       Opts.ProgramAction = frontend::EmitLLVMOnly; break;
911     case OPT_emit_obj:
912       Opts.ProgramAction = frontend::EmitObj; break;
913     case OPT_fixit:
914       Opts.ProgramAction = frontend::FixIt; break;
915     case OPT_emit_pch:
916       Opts.ProgramAction = frontend::GeneratePCH; break;
917     case OPT_emit_pth:
918       Opts.ProgramAction = frontend::GeneratePTH; break;
919     case OPT_init_only:
920       Opts.ProgramAction = frontend::InitOnly; break;
921     case OPT_parse_noop:
922       Opts.ProgramAction = frontend::ParseNoop; break;
923     case OPT_parse_print_callbacks:
924       Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
925     case OPT_fsyntax_only:
926       Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
927     case OPT_print_decl_contexts:
928       Opts.ProgramAction = frontend::PrintDeclContext; break;
929     case OPT_E:
930       Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
931     case OPT_rewrite_macros:
932       Opts.ProgramAction = frontend::RewriteMacros; break;
933     case OPT_rewrite_objc:
934       Opts.ProgramAction = frontend::RewriteObjC; break;
935     case OPT_rewrite_test:
936       Opts.ProgramAction = frontend::RewriteTest; break;
937     case OPT_analyze:
938       Opts.ProgramAction = frontend::RunAnalysis; break;
939     case OPT_Eonly:
940       Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
941     }
942   }
943   if (const Arg *A = Args.getLastArg(OPT_plugin)) {
944     Opts.ProgramAction = frontend::PluginAction;
945     Opts.ActionName = A->getValue(Args);
946   }
947 
948   if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
949     Opts.CodeCompletionAt =
950       ParsedSourceLocation::FromString(A->getValue(Args));
951     if (Opts.CodeCompletionAt.FileName.empty())
952       Diags.Report(diag::err_drv_invalid_value)
953         << A->getAsString(Args) << A->getValue(Args);
954   }
955   Opts.DebugCodeCompletionPrinter =
956     !Args.hasArg(OPT_no_code_completion_debug_printer);
957   Opts.DisableFree = Args.hasArg(OPT_disable_free);
958 
959   Opts.FixItLocations.clear();
960   for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
961          ie = Args.filtered_end(); it != ie; ++it) {
962     const char *Loc = it->getValue(Args);
963     ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
964 
965     if (PSL.FileName.empty()) {
966       Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
967       continue;
968     }
969 
970     Opts.FixItLocations.push_back(PSL);
971   }
972 
973   Opts.OutputFile = getLastArgValue(Args, OPT_o);
974   Opts.Plugins = getAllArgValues(Args, OPT_load);
975   Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
976   Opts.ShowHelp = Args.hasArg(OPT_help);
977   Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
978   Opts.ShowStats = Args.hasArg(OPT_print_stats);
979   Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
980   Opts.ShowVersion = Args.hasArg(OPT_version);
981   Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
982   Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
983   Opts.LLVMArgs = getAllArgValues(Args, OPT_mllvm);
984 
985   FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
986   if (const Arg *A = Args.getLastArg(OPT_x)) {
987     DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
988       .Case("c", FrontendOptions::IK_C)
989       .Case("cl", FrontendOptions::IK_OpenCL)
990       .Case("c", FrontendOptions::IK_C)
991       .Case("cl", FrontendOptions::IK_OpenCL)
992       .Case("c++", FrontendOptions::IK_CXX)
993       .Case("objective-c", FrontendOptions::IK_ObjC)
994       .Case("objective-c++", FrontendOptions::IK_ObjCXX)
995       .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
996       .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
997       .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
998       .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
999       .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
1000       .Case("c-header", FrontendOptions::IK_C)
1001       .Case("objective-c-header", FrontendOptions::IK_ObjC)
1002       .Case("c++-header", FrontendOptions::IK_CXX)
1003       .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
1004       .Case("ast", FrontendOptions::IK_AST)
1005       .Default(FrontendOptions::IK_None);
1006     if (DashX == FrontendOptions::IK_None)
1007       Diags.Report(diag::err_drv_invalid_value)
1008         << A->getAsString(Args) << A->getValue(Args);
1009   }
1010 
1011   // '-' is the default input if none is given.
1012   std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
1013   Opts.Inputs.clear();
1014   if (Inputs.empty())
1015     Inputs.push_back("-");
1016   for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1017     FrontendOptions::InputKind IK = DashX;
1018     if (IK == FrontendOptions::IK_None) {
1019       IK = FrontendOptions::getInputKindForExtension(
1020         llvm::StringRef(Inputs[i]).rsplit('.').second);
1021       // FIXME: Remove this hack.
1022       if (i == 0)
1023         DashX = IK;
1024     }
1025     Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1026   }
1027 
1028   return DashX;
1029 }
1030 
1031 std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1032                                                  void *MainAddr) {
1033   llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1034 
1035   if (!P.isEmpty()) {
1036     P.eraseComponent();  // Remove /clang from foo/bin/clang
1037     P.eraseComponent();  // Remove /bin   from foo/bin
1038 
1039     // Get foo/lib/clang/<version>/include
1040     P.appendComponent("lib");
1041     P.appendComponent("clang");
1042     P.appendComponent(CLANG_VERSION_STRING);
1043   }
1044 
1045   return P.str();
1046 }
1047 
1048 static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1049   using namespace cc1options;
1050   Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1051   Opts.Verbose = Args.hasArg(OPT_v);
1052   Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1053   Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1054   Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1055   Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1056 
1057   // Add -I... and -F... options in order.
1058   for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1059          ie = Args.filtered_end(); it != ie; ++it)
1060     Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1061                  /*IsFramework=*/ it->getOption().matches(OPT_F));
1062 
1063   // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1064   llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1065   for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1066                                              OPT_iwithprefixbefore),
1067          ie = Args.filtered_end(); it != ie; ++it) {
1068     if (it->getOption().matches(OPT_iprefix))
1069       Prefix = it->getValue(Args);
1070     else if (it->getOption().matches(OPT_iwithprefix))
1071       Opts.AddPath(Prefix.str() + it->getValue(Args),
1072                    frontend::System, false, false);
1073     else
1074       Opts.AddPath(Prefix.str() + it->getValue(Args),
1075                    frontend::Angled, false, false);
1076   }
1077 
1078   for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1079          ie = Args.filtered_end(); it != ie; ++it)
1080     Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1081   for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1082          ie = Args.filtered_end(); it != ie; ++it)
1083     Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1084   for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1085          ie = Args.filtered_end(); it != ie; ++it)
1086     Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1087 
1088   // FIXME: Need options for the various environment variables!
1089 }
1090 
1091 static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1092                           FrontendOptions::InputKind IK,
1093                           Diagnostic &Diags) {
1094   // FIXME: Cleanup per-file based stuff.
1095 
1096   // Set some properties which depend soley on the input kind; it would be nice
1097   // to move these to the language standard, and have the driver resolve the
1098   // input kind + language standard.
1099   if (IK == FrontendOptions::IK_Asm) {
1100     Opts.AsmPreprocessor = 1;
1101   } else if (IK == FrontendOptions::IK_ObjC ||
1102              IK == FrontendOptions::IK_ObjCXX ||
1103              IK == FrontendOptions::IK_PreprocessedObjC ||
1104              IK == FrontendOptions::IK_PreprocessedObjCXX) {
1105     Opts.ObjC1 = Opts.ObjC2 = 1;
1106   }
1107 
1108   LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1109   if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1110     LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1111 #define LANGSTANDARD(id, name, desc, features) \
1112       .Case(name, LangStandard::lang_##id)
1113 #include "clang/Frontend/LangStandards.def"
1114       .Default(LangStandard::lang_unspecified);
1115     if (LangStd == LangStandard::lang_unspecified)
1116       Diags.Report(diag::err_drv_invalid_value)
1117         << A->getAsString(Args) << A->getValue(Args);
1118   }
1119 
1120   if (LangStd == LangStandard::lang_unspecified) {
1121     // Based on the base language, pick one.
1122     switch (IK) {
1123     case FrontendOptions::IK_None:
1124     case FrontendOptions::IK_AST:
1125       assert(0 && "Invalid input kind!");
1126     case FrontendOptions::IK_OpenCL:
1127       LangStd = LangStandard::lang_opencl;
1128       break;
1129     case FrontendOptions::IK_Asm:
1130     case FrontendOptions::IK_C:
1131     case FrontendOptions::IK_PreprocessedC:
1132     case FrontendOptions::IK_ObjC:
1133     case FrontendOptions::IK_PreprocessedObjC:
1134       LangStd = LangStandard::lang_gnu99;
1135       break;
1136     case FrontendOptions::IK_CXX:
1137     case FrontendOptions::IK_PreprocessedCXX:
1138     case FrontendOptions::IK_ObjCXX:
1139     case FrontendOptions::IK_PreprocessedObjCXX:
1140       LangStd = LangStandard::lang_gnucxx98;
1141       break;
1142     }
1143   }
1144 
1145   const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1146   Opts.BCPLComment = Std.hasBCPLComments();
1147   Opts.C99 = Std.isC99();
1148   Opts.CPlusPlus = Std.isCPlusPlus();
1149   Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1150   Opts.Digraphs = Std.hasDigraphs();
1151   Opts.GNUMode = Std.isGNUMode();
1152   Opts.GNUInline = !Std.isC99();
1153   Opts.HexFloats = Std.hasHexFloats();
1154   Opts.ImplicitInt = Std.hasImplicitInt();
1155 
1156   // OpenCL has some additional defaults.
1157   if (LangStd == LangStandard::lang_opencl) {
1158     Opts.OpenCL = 1;
1159     Opts.AltiVec = 1;
1160     Opts.CXXOperatorNames = 1;
1161     Opts.LaxVectorConversions = 1;
1162   }
1163 
1164   // OpenCL and C++ both have bool, true, false keywords.
1165   Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1166 
1167   // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1168   // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1169   // while a subset (the non-C++ GNU keywords) is provided by GCC's
1170   // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1171   // name, as it doesn't seem a useful distinction.
1172   Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1173                                   Opts.GNUMode);
1174 
1175   if (Opts.CPlusPlus)
1176     Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1177 
1178   if (Args.hasArg(OPT_fobjc_gc_only))
1179     Opts.setGCMode(LangOptions::GCOnly);
1180   else if (Args.hasArg(OPT_fobjc_gc))
1181     Opts.setGCMode(LangOptions::HybridGC);
1182 
1183   if (Args.hasArg(OPT_print_ivar_layout))
1184     Opts.ObjCGCBitmapPrint = 1;
1185   if (Args.hasArg(OPT_fno_constant_cfstrings))
1186     Opts.NoConstantCFStrings = 1;
1187 
1188   if (Args.hasArg(OPT_faltivec))
1189     Opts.AltiVec = 1;
1190 
1191   if (Args.hasArg(OPT_pthread))
1192     Opts.POSIXThreads = 1;
1193 
1194   llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1195                                         "default");
1196   if (Vis == "default")
1197     Opts.setVisibilityMode(LangOptions::Default);
1198   else if (Vis == "hidden")
1199     Opts.setVisibilityMode(LangOptions::Hidden);
1200   else if (Vis == "protected")
1201     Opts.setVisibilityMode(LangOptions::Protected);
1202   else
1203     Diags.Report(diag::err_drv_invalid_value)
1204       << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1205 
1206   Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1207 
1208   // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1209   // is specified, or -std is set to a conforming mode.
1210   Opts.Trigraphs = !Opts.GNUMode;
1211   if (Args.hasArg(OPT_trigraphs))
1212     Opts.Trigraphs = 1;
1213 
1214   Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1215                                    OPT_fno_dollars_in_identifiers,
1216                                    !Opts.AsmPreprocessor);
1217   Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1218   Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1219   Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1220   Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1221   if (Args.hasArg(OPT_fno_lax_vector_conversions))
1222     Opts.LaxVectorConversions = 0;
1223   if (Args.hasArg(OPT_fno_threadsafe_statics))
1224     Opts.ThreadsafeStatics = 0;
1225   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1226   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1227   Opts.Blocks = Args.hasArg(OPT_fblocks);
1228   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1229   Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1230   Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1231   Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1232   Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1233   Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1234   Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1235   Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1236   Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1237   Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1238                                                Diags);
1239   Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1240   Opts.ObjCConstantStringClass = getLastArgValue(Args,
1241                                                  OPT_fconstant_string_class);
1242   Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1243   Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1244   if (Opts.ObjCNonFragileABI2)
1245     Opts.ObjCNonFragileABI = true;
1246   Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1247   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1248   Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1249   Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1250   Opts.Static = Args.hasArg(OPT_static_define);
1251   Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1252   Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1253   Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1254   Opts.OptimizeSize = 0;
1255 
1256   // FIXME: Eliminate this dependency.
1257   unsigned Opt =
1258     Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1259   Opts.Optimize = Opt != 0;
1260 
1261   // This is the __NO_INLINE__ define, which just depends on things like the
1262   // optimization level and -fno-inline, not actually whether the backend has
1263   // inlining enabled.
1264   //
1265   // FIXME: This is affected by other options (-fno-inline).
1266   Opts.NoInline = !Opt;
1267 
1268   unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1269   switch (SSP) {
1270   default:
1271     Diags.Report(diag::err_drv_invalid_value)
1272       << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1273     break;
1274   case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1275   case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1276   case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1277   }
1278 }
1279 
1280 static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1281                                   Diagnostic &Diags) {
1282   using namespace cc1options;
1283   Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1284   Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1285   if (const Arg *A = Args.getLastArg(OPT_token_cache))
1286       Opts.TokenCache = A->getValue(Args);
1287   else
1288     Opts.TokenCache = Opts.ImplicitPTHInclude;
1289   Opts.UsePredefines = !Args.hasArg(OPT_undef);
1290   Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1291   // Add macros from the command line.
1292   for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1293          ie = Args.filtered_end(); it != ie; ++it) {
1294     if (it->getOption().matches(OPT_D))
1295       Opts.addMacroDef(it->getValue(Args));
1296     else
1297       Opts.addMacroUndef(it->getValue(Args));
1298   }
1299 
1300   Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1301 
1302   // Add the ordered list of -includes.
1303   for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1304                                              OPT_include_pth),
1305          ie = Args.filtered_end(); it != ie; ++it) {
1306     // PCH is handled specially, we need to extra the original include path.
1307     if (it->getOption().matches(OPT_include_pch)) {
1308       std::string OriginalFile =
1309         PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1310       if (OriginalFile.empty())
1311         continue;
1312 
1313       Opts.Includes.push_back(OriginalFile);
1314     } else
1315       Opts.Includes.push_back(it->getValue(Args));
1316   }
1317 
1318   // Include 'altivec.h' if -faltivec option present
1319   if (Args.hasArg(OPT_faltivec))
1320     Opts.Includes.push_back("altivec.h");
1321 
1322   for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1323          ie = Args.filtered_end(); it != ie; ++it) {
1324     std::pair<llvm::StringRef,llvm::StringRef> Split =
1325       llvm::StringRef(it->getValue(Args)).split(';');
1326 
1327     if (Split.second.empty()) {
1328       Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1329       continue;
1330     }
1331 
1332     Opts.addRemappedFile(Split.first, Split.second);
1333   }
1334 }
1335 
1336 static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1337                                         ArgList &Args) {
1338   using namespace cc1options;
1339   Opts.ShowCPP = !Args.hasArg(OPT_dM);
1340   Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1341   Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1342   Opts.ShowComments = Args.hasArg(OPT_C);
1343   Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1344 }
1345 
1346 static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1347   using namespace cc1options;
1348   Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1349   Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1350   Opts.Triple = getLastArgValue(Args, OPT_triple);
1351   Opts.Features = getAllArgValues(Args, OPT_target_feature);
1352 
1353   // Use the host triple if unspecified.
1354   if (Opts.Triple.empty())
1355     Opts.Triple = llvm::sys::getHostTriple();
1356 }
1357 
1358 //
1359 
1360 void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1361                                         const char **ArgBegin,
1362                                         const char **ArgEnd,
1363                                         Diagnostic &Diags) {
1364   // Parse the arguments.
1365   llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1366   unsigned MissingArgIndex, MissingArgCount;
1367   llvm::OwningPtr<InputArgList> Args(
1368     Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1369 
1370   // Check for missing argument error.
1371   if (MissingArgCount)
1372     Diags.Report(diag::err_drv_missing_argument)
1373       << Args->getArgString(MissingArgIndex) << MissingArgCount;
1374 
1375   // Issue errors on unknown arguments.
1376   for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1377          ie = Args->filtered_end(); it != ie; ++it)
1378     Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1379 
1380   ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1381   ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1382   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1383   ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1384   FrontendOptions::InputKind DashX =
1385     ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1386   ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1387   if (DashX != FrontendOptions::IK_AST)
1388     ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1389   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1390   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1391   ParseTargetArgs(Res.getTargetOpts(), *Args);
1392 }
1393