CompilerInvocation.cpp revision 8663b180085e9bc7a0a87c80cc3f722efef99e79 
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"
29using namespace clang;
30
31static 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
41static 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
51static 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
61static 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
75static 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
117static 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.MergeAllConstants)
126    Res.push_back("-fno-merge-all-constants");
127  if (Opts.NoCommon)
128    Res.push_back("-fno-common");
129  if (Opts.NoImplicitFloat)
130    Res.push_back("-no-implicit-float");
131  if (Opts.OptimizeSize) {
132    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
133    Res.push_back("-Os");
134  } else if (Opts.OptimizationLevel != 0)
135    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
136  if (!Opts.MainFileName.empty()) {
137    Res.push_back("-main-file-name");
138    Res.push_back(Opts.MainFileName);
139  }
140  // SimplifyLibCalls is only derived.
141  // TimePasses is only derived.
142  // UnitAtATime is unused.
143  // UnrollLoops is only derived.
144  // VerifyModule is only derived.
145  // Inlining is only derived.
146
147  if (Opts.AsmVerbose)
148    Res.push_back("-masm-verbose");
149  if (!Opts.CodeModel.empty()) {
150    Res.push_back("-mcode-model");
151    Res.push_back(Opts.CodeModel);
152  }
153  if (!Opts.DebugPass.empty()) {
154    Res.push_back("-mdebug-pass");
155    Res.push_back(Opts.DebugPass);
156  }
157  if (Opts.DisableFPElim)
158    Res.push_back("-mdisable-fp-elim");
159  if (!Opts.FloatABI.empty()) {
160    Res.push_back("-mfloat-abi");
161    Res.push_back(Opts.FloatABI);
162  }
163  if (!Opts.LimitFloatPrecision.empty()) {
164    Res.push_back("-mlimit-float-precision");
165    Res.push_back(Opts.LimitFloatPrecision);
166  }
167  if (Opts.NoZeroInitializedInBSS)
168    Res.push_back("-mno-zero-initialized-bss");
169  if (Opts.SoftFloat)
170    Res.push_back("-msoft-float");
171  if (Opts.UnwindTables)
172    Res.push_back("-munwind-tables");
173  if (Opts.RelocationModel != "pic") {
174    Res.push_back("-mrelocation-model");
175    Res.push_back(Opts.RelocationModel);
176  }
177}
178
179static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
180                                       std::vector<std::string> &Res) {
181  if (Opts.IncludeSystemHeaders)
182    Res.push_back("-sys-header-deps");
183  if (Opts.UsePhonyTargets)
184    Res.push_back("-MP");
185  if (!Opts.OutputFile.empty()) {
186    Res.push_back("-dependency-file");
187    Res.push_back(Opts.OutputFile);
188  }
189  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
190    Res.push_back("-MT");
191    Res.push_back(Opts.Targets[i]);
192  }
193}
194
195static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
196                                 std::vector<std::string> &Res) {
197  if (Opts.IgnoreWarnings)
198    Res.push_back("-w");
199  if (Opts.NoRewriteMacros)
200    Res.push_back("-Wno-rewrite-macros");
201  if (Opts.Pedantic)
202    Res.push_back("-pedantic");
203  if (Opts.PedanticErrors)
204    Res.push_back("-pedantic-errors");
205  if (!Opts.ShowColumn)
206    Res.push_back("-fno-show-column");
207  if (!Opts.ShowLocation)
208    Res.push_back("-fno-show-source-location");
209  if (!Opts.ShowCarets)
210    Res.push_back("-fno-caret-diagnostics");
211  if (!Opts.ShowFixits)
212    Res.push_back("-fno-diagnostics-fixit-info");
213  if (Opts.ShowSourceRanges)
214    Res.push_back("-fdiagnostics-print-source-range-info");
215  if (Opts.ShowColors)
216    Res.push_back("-fcolor-diagnostics");
217  if (Opts.VerifyDiagnostics)
218    Res.push_back("-verify");
219  if (Opts.ShowOptionNames)
220    Res.push_back("-fdiagnostics-show-option");
221  if (Opts.MessageLength) {
222    Res.push_back("-fmessage-length");
223    Res.push_back(llvm::utostr(Opts.MessageLength));
224  }
225  if (!Opts.DumpBuildInformation.empty()) {
226    Res.push_back("-dump-build-information");
227    Res.push_back(Opts.DumpBuildInformation);
228  }
229  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
230    Res.push_back("-W" + Opts.Warnings[i]);
231}
232
233static const char *getInputKindName(FrontendOptions::InputKind Kind) {
234  switch (Kind) {
235  case FrontendOptions::IK_None:              break;
236  case FrontendOptions::IK_AST:               return "ast";
237  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
238  case FrontendOptions::IK_C:                 return "c";
239  case FrontendOptions::IK_CXX:               return "c++";
240  case FrontendOptions::IK_ObjC:              return "objective-c";
241  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
242  case FrontendOptions::IK_OpenCL:            return "cl";
243  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
244  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
245  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
246  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
247  }
248
249  llvm_unreachable("Unexpected language kind!");
250  return 0;
251}
252
253static const char *getActionName(frontend::ActionKind Kind) {
254  switch (Kind) {
255  case frontend::PluginAction:
256  case frontend::InheritanceView:
257    llvm_unreachable("Invalid kind!");
258
259  case frontend::ASTDump:                return "-ast-dump";
260  case frontend::ASTPrint:               return "-ast-print";
261  case frontend::ASTPrintXML:            return "-ast-print-xml";
262  case frontend::ASTView:                return "-ast-view";
263  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
264  case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
265  case frontend::DumpTokens:             return "-dump-tokens";
266  case frontend::EmitAssembly:           return "-S";
267  case frontend::EmitBC:                 return "-emit-llvm-bc";
268  case frontend::EmitHTML:               return "-emit-html";
269  case frontend::EmitLLVM:               return "-emit-llvm";
270  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
271  case frontend::FixIt:                  return "-fixit";
272  case frontend::GeneratePCH:            return "-emit-pch";
273  case frontend::GeneratePTH:            return "-emit-pth";
274  case frontend::ParseNoop:              return "-parse-noop";
275  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
276  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
277  case frontend::PrintDeclContext:       return "-print-decl-contexts";
278  case frontend::PrintPreprocessedInput: return "-E";
279  case frontend::RewriteBlocks:          return "-rewrite-blocks";
280  case frontend::RewriteMacros:          return "-rewrite-macros";
281  case frontend::RewriteObjC:            return "-rewrite-objc";
282  case frontend::RewriteTest:            return "-rewrite-test";
283  case frontend::RunAnalysis:            return "-analyze";
284  case frontend::RunPreprocessorOnly:    return "-Eonly";
285  }
286
287  llvm_unreachable("Unexpected language kind!");
288  return 0;
289}
290
291static void FrontendOptsToArgs(const FrontendOptions &Opts,
292                               std::vector<std::string> &Res) {
293  if (!Opts.DebugCodeCompletionPrinter)
294    Res.push_back("-no-code-completion-debug-printer");
295  if (Opts.DisableFree)
296    Res.push_back("-disable-free");
297  if (Opts.EmptyInputOnly)
298    Res.push_back("-empty-input-only");
299  if (Opts.RelocatablePCH)
300    Res.push_back("-relocatable-pch");
301  if (Opts.ShowHelp)
302    Res.push_back("-help");
303  if (Opts.ShowMacrosInCodeCompletion)
304    Res.push_back("-code-completion-macros");
305  if (Opts.ShowStats)
306    Res.push_back("-print-stats");
307  if (Opts.ShowTimers)
308    Res.push_back("-ftime-report");
309  if (Opts.ShowVersion)
310    Res.push_back("-version");
311
312  bool NeedLang = false;
313  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
314    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
315        Opts.Inputs[i].first)
316      NeedLang = true;
317  if (NeedLang) {
318    Res.push_back("-x");
319    Res.push_back(getInputKindName(Opts.Inputs[0].first));
320  }
321  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
322    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
323           "Unable to represent this input vector!");
324    Res.push_back(Opts.Inputs[i].second);
325  }
326
327  if (!Opts.OutputFile.empty()) {
328    Res.push_back("-o");
329    Res.push_back(Opts.OutputFile);
330  }
331  if (!Opts.ViewClassInheritance.empty()) {
332    Res.push_back("-cxx-inheritance-view");
333    Res.push_back(Opts.ViewClassInheritance);
334  }
335  for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
336    Res.push_back("-fixit-at");
337    Res.push_back(Opts.FixItLocations[i].FileName + ":" +
338                  llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
339                  llvm::utostr(Opts.FixItLocations[i].Column));
340  }
341  if (!Opts.CodeCompletionAt.FileName.empty()) {
342    Res.push_back("-code-completion-at");
343    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
344                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
345                  llvm::utostr(Opts.CodeCompletionAt.Column));
346  }
347  if (Opts.ProgramAction != frontend::InheritanceView &&
348      Opts.ProgramAction != frontend::PluginAction)
349    Res.push_back(getActionName(Opts.ProgramAction));
350  if (!Opts.ActionName.empty()) {
351    Res.push_back("-plugin");
352    Res.push_back(Opts.ActionName);
353  }
354  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
355    Res.push_back("-load");
356    Res.push_back(Opts.Plugins[i]);
357  }
358}
359
360static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
361                                   std::vector<std::string> &Res) {
362  if (Opts.Sysroot != "/") {
363    Res.push_back("-isysroot");
364    Res.push_back(Opts.Sysroot);
365  }
366
367  /// User specified include entries.
368  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
369    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
370    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
371      llvm::llvm_report_error("Invalid option set!");
372    if (E.IsUserSupplied) {
373      if (E.Group == frontend::After) {
374        Res.push_back("-idirafter");
375      } else if (E.Group == frontend::Quoted) {
376        Res.push_back("-iquote");
377      } else if (E.Group == frontend::System) {
378        Res.push_back("-isystem");
379      } else {
380        assert(E.Group == frontend::Angled && "Invalid group!");
381        Res.push_back(E.IsFramework ? "-F" : "-I");
382      }
383    } else {
384      if (E.Group != frontend::Angled && E.Group != frontend::System)
385        llvm::llvm_report_error("Invalid option set!");
386      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
387                    "-iwithprefix");
388    }
389    Res.push_back(E.Path);
390  }
391
392  if (!Opts.EnvIncPath.empty()) {
393    // FIXME: Provide an option for this, and move env detection to driver.
394    llvm::llvm_report_error("Not yet implemented!");
395  }
396  if (!Opts.CEnvIncPath.empty()) {
397    // FIXME: Provide an option for this, and move env detection to driver.
398    llvm::llvm_report_error("Not yet implemented!");
399  }
400  if (!Opts.ObjCEnvIncPath.empty()) {
401    // FIXME: Provide an option for this, and move env detection to driver.
402    llvm::llvm_report_error("Not yet implemented!");
403  }
404  if (!Opts.CXXEnvIncPath.empty()) {
405    // FIXME: Provide an option for this, and move env detection to driver.
406    llvm::llvm_report_error("Not yet implemented!");
407  }
408  if (!Opts.ObjCXXEnvIncPath.empty()) {
409    // FIXME: Provide an option for this, and move env detection to driver.
410    llvm::llvm_report_error("Not yet implemented!");
411  }
412  if (!Opts.ResourceDir.empty()) {
413    Res.push_back("-resource-dir");
414    Res.push_back(Opts.ResourceDir);
415  }
416  if (!Opts.UseStandardIncludes)
417    Res.push_back("-nostdinc");
418  if (Opts.Verbose)
419    Res.push_back("-v");
420}
421
422static void LangOptsToArgs(const LangOptions &Opts,
423                           std::vector<std::string> &Res) {
424  LangOptions DefaultLangOpts;
425
426  // FIXME: Need to set -std to get all the implicit options.
427
428  // FIXME: We want to only pass options relative to the defaults, which
429  // requires constructing a target. :(
430  //
431  // It would be better to push the all target specific choices into the driver,
432  // so that everything below that was more uniform.
433
434  if (Opts.Trigraphs)
435    Res.push_back("-trigraphs");
436  // Implicit based on the input kind:
437  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
438  // Implicit based on the input language standard:
439  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
440  if (Opts.DollarIdents)
441    Res.push_back("-fdollars-in-identifiers");
442  if (Opts.Microsoft)
443    Res.push_back("-fms-extensions");
444  if (Opts.ObjCNonFragileABI)
445    Res.push_back("-fobjc-nonfragile-abi");
446  // NoInline is implicit.
447  if (!Opts.CXXOperatorNames)
448    Res.push_back("-fno-operator-names");
449  if (Opts.PascalStrings)
450    Res.push_back("-fpascal-strings");
451  if (Opts.CatchUndefined)
452    Res.push_back("-fcatch-undefined-behavior");
453  if (Opts.WritableStrings)
454    Res.push_back("-fwritable-strings");
455  if (!Opts.LaxVectorConversions)
456    Res.push_back("-fno-lax-vector-conversions");
457  if (Opts.AltiVec)
458    Res.push_back("-faltivec");
459  if (Opts.Exceptions)
460    Res.push_back("-fexceptions");
461  if (!Opts.RTTI)
462    Res.push_back("-fno-rtti");
463  if (!Opts.NeXTRuntime)
464    Res.push_back("-fgnu-runtime");
465  if (Opts.Freestanding)
466    Res.push_back("-ffreestanding");
467  if (Opts.NoBuiltin)
468    Res.push_back("-fno-builtin");
469  if (!Opts.AssumeSaneOperatorNew)
470    Res.push_back("-fno-assume-sane-operator-new");
471  if (Opts.ThreadsafeStatics)
472    llvm::llvm_report_error("FIXME: Not yet implemented!");
473  if (Opts.POSIXThreads)
474    Res.push_back("-pthread");
475  if (Opts.Blocks)
476    Res.push_back("-fblocks");
477  if (Opts.EmitAllDecls)
478    Res.push_back("-femit-all-decls");
479  if (!Opts.MathErrno)
480    Res.push_back("-fno-math-errno");
481  if (Opts.OverflowChecking)
482    Res.push_back("-ftrapv");
483  if (Opts.HeinousExtensions)
484    Res.push_back("-fheinous-gnu-extensions");
485  // Optimize is implicit.
486  // OptimizeSize is implicit.
487  if (Opts.Static)
488    Res.push_back("-static-define");
489  if (Opts.PICLevel) {
490    Res.push_back("-pic-level");
491    Res.push_back(llvm::utostr(Opts.PICLevel));
492  }
493  if (Opts.ObjCGCBitmapPrint)
494    Res.push_back("-print-ivar-layout");
495  // FIXME: Don't forget to update when the default changes!
496  if (Opts.AccessControl)
497    Res.push_back("-faccess-control");
498  if (!Opts.CharIsSigned)
499    Res.push_back("-fno-signed-char");
500  if (Opts.ShortWChar)
501    Res.push_back("-fshort-wchar");
502  if (!Opts.ElideConstructors)
503    Res.push_back("-fno-elide-constructors");
504  if (Opts.getGCMode() != LangOptions::NonGC) {
505    if (Opts.getGCMode() == LangOptions::HybridGC) {
506      Res.push_back("-fobjc-gc");
507    } else {
508      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
509      Res.push_back("-fobjc-gc-only");
510    }
511  }
512  if (Opts.getVisibilityMode() != LangOptions::Default) {
513    Res.push_back("-fvisibility");
514    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
515      Res.push_back("hidden");
516    } else {
517      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
518             "Invalid visibility!");
519      Res.push_back("protected");
520    }
521  }
522  if (Opts.getStackProtectorMode() != 0) {
523    Res.push_back("-stack-protector");
524    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
525  }
526  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
527    Res.push_back("-ftemplate-depth");
528    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
529  }
530  if (!Opts.ObjCConstantStringClass.empty()) {
531    Res.push_back("-fconstant-string-class");
532    Res.push_back(Opts.ObjCConstantStringClass);
533  }
534}
535
536static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
537                                   std::vector<std::string> &Res) {
538  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
539    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
540                  Opts.Macros[i].first);
541  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
542    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
543    Res.push_back("-include");
544    Res.push_back(Opts.Includes[i]);
545  }
546  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
547    Res.push_back("-imacros");
548    Res.push_back(Opts.MacroIncludes[i]);
549  }
550  if (!Opts.UsePredefines)
551    Res.push_back("-undef");
552  if (!Opts.ImplicitPCHInclude.empty()) {
553    Res.push_back("-include-pch");
554    Res.push_back(Opts.ImplicitPCHInclude);
555  }
556  if (!Opts.ImplicitPTHInclude.empty()) {
557    Res.push_back("-include-pth");
558    Res.push_back(Opts.ImplicitPTHInclude);
559  }
560  if (!Opts.TokenCache.empty()) {
561    if (Opts.ImplicitPTHInclude.empty()) {
562      Res.push_back("-token-cache");
563      Res.push_back(Opts.TokenCache);
564    } else
565      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
566             "Unsupported option combination!");
567  }
568  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
569    Res.push_back("-remap-file");
570    Res.push_back(Opts.RemappedFiles[i].first + ";" +
571                  Opts.RemappedFiles[i].second);
572  }
573}
574
575static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
576                                         std::vector<std::string> &Res) {
577  if (!Opts.ShowCPP && !Opts.ShowMacros)
578    llvm::llvm_report_error("Invalid option combination!");
579
580  if (Opts.ShowCPP && Opts.ShowMacros)
581    Res.push_back("-dD");
582  else if (!Opts.ShowCPP && Opts.ShowMacros)
583    Res.push_back("-dM");
584
585  if (!Opts.ShowLineMarkers)
586    Res.push_back("-P");
587  if (Opts.ShowComments)
588    Res.push_back("-C");
589  if (Opts.ShowMacroComments)
590    Res.push_back("-CC");
591}
592
593static void TargetOptsToArgs(const TargetOptions &Opts,
594                             std::vector<std::string> &Res) {
595  Res.push_back("-triple");
596  Res.push_back(Opts.Triple);
597  if (!Opts.CPU.empty()) {
598    Res.push_back("-mcpu");
599    Res.push_back(Opts.CPU);
600  }
601  if (!Opts.ABI.empty()) {
602    Res.push_back("-target-abi");
603    Res.push_back(Opts.ABI);
604  }
605  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
606    Res.push_back("-target-feature");
607    Res.push_back(Opts.Features[i]);
608  }
609}
610
611void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
612  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
613  CodeGenOptsToArgs(getCodeGenOpts(), Res);
614  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
615  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
616  FrontendOptsToArgs(getFrontendOpts(), Res);
617  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
618  LangOptsToArgs(getLangOpts(), Res);
619  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
620  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
621  TargetOptsToArgs(getTargetOpts(), Res);
622}
623
624//===----------------------------------------------------------------------===//
625// Deserialization (to args)
626//===----------------------------------------------------------------------===//
627
628using namespace clang::driver;
629using namespace clang::driver::cc1options;
630
631static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
632                                       llvm::StringRef Default = "") {
633  if (Arg *A = Args.getLastArg(ID))
634    return A->getValue(Args);
635  return Default;
636}
637
638static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
639                              int Default, Diagnostic &Diags) {
640  Arg *A = Args.getLastArg(ID);
641  if (!A)
642    return Default;
643
644  int Res = Default;
645  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
646    Diags.Report(diag::err_drv_invalid_int_value)
647        << A->getAsString(Args) << A->getValue(Args);
648
649  return Res;
650}
651
652static std::vector<std::string>
653getAllArgValues(ArgList &Args, cc1options::ID ID) {
654  llvm::SmallVector<const char *, 16> Values;
655  Args.AddAllArgValues(Values, ID);
656  return std::vector<std::string>(Values.begin(), Values.end());
657}
658
659//
660
661static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
662                              Diagnostic &Diags) {
663  using namespace cc1options;
664
665  Opts.AnalysisList.clear();
666#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
667  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
668#include "clang/Frontend/Analyses.def"
669
670  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
671    llvm::StringRef Name = A->getValue(Args);
672    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
673#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
674      .Case(CMDFLAG, NAME##Model)
675#include "clang/Frontend/Analyses.def"
676      .Default(NumStores);
677    // FIXME: Error handling.
678    if (Value == NumStores)
679      Diags.Report(diag::err_drv_invalid_value)
680        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
681    else
682      Opts.AnalysisStoreOpt = Value;
683  }
684
685  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
686    llvm::StringRef Name = A->getValue(Args);
687    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
688#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
689      .Case(CMDFLAG, NAME##Model)
690#include "clang/Frontend/Analyses.def"
691      .Default(NumConstraints);
692    // FIXME: Error handling.
693    if (Value == NumConstraints)
694      Diags.Report(diag::err_drv_invalid_value)
695        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
696    else
697      Opts.AnalysisConstraintsOpt = Value;
698  }
699
700  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
701    llvm::StringRef Name = A->getValue(Args);
702    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
703#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
704      .Case(CMDFLAG, PD_##NAME)
705#include "clang/Frontend/Analyses.def"
706      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
707    // FIXME: Error handling.
708    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
709      Diags.Report(diag::err_drv_invalid_value)
710        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
711    else
712      Opts.AnalysisDiagOpt = Value;
713  }
714
715  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
716  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
717  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
718  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
719  Opts.AnalyzeNestedBlocks =
720    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
721  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
722  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
723  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
724  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
725  Opts.EnableExperimentalInternalChecks =
726    Args.hasArg(OPT_analyzer_experimental_internal_checks);
727  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
728}
729
730static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
731                             Diagnostic &Diags) {
732  using namespace cc1options;
733  // -Os implies -O2
734  if (Args.hasArg(OPT_Os))
735    Opts.OptimizationLevel = 2;
736  else {
737    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
738    if (Opts.OptimizationLevel > 3) {
739      Diags.Report(diag::err_drv_invalid_value)
740        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
741      Opts.OptimizationLevel = 3;
742    }
743  }
744
745  // We must always run at least the always inlining pass.
746  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
747    : CodeGenOptions::OnlyAlwaysInlining;
748
749  Opts.DebugInfo = Args.hasArg(OPT_g);
750  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
751  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
752  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
753  Opts.NoCommon = Args.hasArg(OPT_fno_common);
754  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
755  Opts.OptimizeSize = Args.hasArg(OPT_Os);
756  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
757
758  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
759  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
760  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
761  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
762  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
763  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
764  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
765  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
766  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
767  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
768
769  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
770
771  // FIXME: Put elsewhere?
772#ifdef NDEBUG
773  Opts.VerifyModule = 0;
774#else
775  Opts.VerifyModule = 1;
776#endif
777}
778
779static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
780                                      ArgList &Args) {
781  using namespace cc1options;
782  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
783  Opts.Targets = getAllArgValues(Args, OPT_MT);
784  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
785  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
786}
787
788static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
789                                Diagnostic &Diags) {
790  using namespace cc1options;
791  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
792  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
793  Opts.Pedantic = Args.hasArg(OPT_pedantic);
794  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
795  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
796  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
797  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
798  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
799  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
800  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
801  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
802  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
803  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
804  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
805  Opts.Warnings = getAllArgValues(Args, OPT_W);
806}
807
808static FrontendOptions::InputKind
809ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
810  using namespace cc1options;
811  Opts.ProgramAction = frontend::ParseSyntaxOnly;
812  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
813    switch (A->getOption().getID()) {
814    default:
815      assert(0 && "Invalid option in group!");
816    case OPT_ast_dump:
817      Opts.ProgramAction = frontend::ASTDump; break;
818    case OPT_ast_print:
819      Opts.ProgramAction = frontend::ASTPrint; break;
820    case OPT_ast_print_xml:
821      Opts.ProgramAction = frontend::ASTPrintXML; break;
822    case OPT_ast_view:
823      Opts.ProgramAction = frontend::ASTView; break;
824    case OPT_dump_raw_tokens:
825      Opts.ProgramAction = frontend::DumpRawTokens; break;
826    case OPT_dump_record_layouts:
827      Opts.ProgramAction = frontend::DumpRecordLayouts; break;
828    case OPT_dump_tokens:
829      Opts.ProgramAction = frontend::DumpTokens; break;
830    case OPT_S:
831      Opts.ProgramAction = frontend::EmitAssembly; break;
832    case OPT_emit_llvm_bc:
833      Opts.ProgramAction = frontend::EmitBC; break;
834    case OPT_emit_html:
835      Opts.ProgramAction = frontend::EmitHTML; break;
836    case OPT_emit_llvm:
837      Opts.ProgramAction = frontend::EmitLLVM; break;
838    case OPT_emit_llvm_only:
839      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
840    case OPT_fixit:
841      Opts.ProgramAction = frontend::FixIt; break;
842    case OPT_emit_pch:
843      Opts.ProgramAction = frontend::GeneratePCH; break;
844    case OPT_emit_pth:
845      Opts.ProgramAction = frontend::GeneratePTH; break;
846    case OPT_parse_noop:
847      Opts.ProgramAction = frontend::ParseNoop; break;
848    case OPT_parse_print_callbacks:
849      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
850    case OPT_fsyntax_only:
851      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
852    case OPT_print_decl_contexts:
853      Opts.ProgramAction = frontend::PrintDeclContext; break;
854    case OPT_E:
855      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
856    case OPT_rewrite_blocks:
857      Opts.ProgramAction = frontend::RewriteBlocks; break;
858    case OPT_rewrite_macros:
859      Opts.ProgramAction = frontend::RewriteMacros; break;
860    case OPT_rewrite_objc:
861      Opts.ProgramAction = frontend::RewriteObjC; break;
862    case OPT_rewrite_test:
863      Opts.ProgramAction = frontend::RewriteTest; break;
864    case OPT_analyze:
865      Opts.ProgramAction = frontend::RunAnalysis; break;
866    case OPT_Eonly:
867      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
868    }
869  }
870  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
871    Opts.ProgramAction = frontend::PluginAction;
872    Opts.ActionName = A->getValue(Args);
873  }
874
875  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
876    Opts.CodeCompletionAt =
877      ParsedSourceLocation::FromString(A->getValue(Args));
878    if (Opts.CodeCompletionAt.FileName.empty())
879      Diags.Report(diag::err_drv_invalid_value)
880        << A->getAsString(Args) << A->getValue(Args);
881  }
882  Opts.DebugCodeCompletionPrinter =
883    !Args.hasArg(OPT_no_code_completion_debug_printer);
884  Opts.DisableFree = Args.hasArg(OPT_disable_free);
885  Opts.EmptyInputOnly = Args.hasArg(OPT_empty_input_only);
886
887  Opts.FixItLocations.clear();
888  for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
889         ie = Args.filtered_end(); it != ie; ++it) {
890    const char *Loc = it->getValue(Args);
891    ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
892
893    if (PSL.FileName.empty()) {
894      Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
895      continue;
896    }
897
898    Opts.FixItLocations.push_back(PSL);
899  }
900
901  Opts.OutputFile = getLastArgValue(Args, OPT_o);
902  Opts.Plugins = getAllArgValues(Args, OPT_load);
903  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
904  Opts.ShowHelp = Args.hasArg(OPT_help);
905  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
906  Opts.ShowStats = Args.hasArg(OPT_print_stats);
907  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
908  Opts.ShowVersion = Args.hasArg(OPT_version);
909  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
910
911  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
912  if (const Arg *A = Args.getLastArg(OPT_x)) {
913    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
914      .Case("c", FrontendOptions::IK_C)
915      .Case("cl", FrontendOptions::IK_OpenCL)
916      .Case("c", FrontendOptions::IK_C)
917      .Case("cl", FrontendOptions::IK_OpenCL)
918      .Case("c++", FrontendOptions::IK_CXX)
919      .Case("objective-c", FrontendOptions::IK_ObjC)
920      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
921      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
922      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
923      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
924      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
925      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
926      .Case("c-header", FrontendOptions::IK_C)
927      .Case("objective-c-header", FrontendOptions::IK_ObjC)
928      .Case("c++-header", FrontendOptions::IK_CXX)
929      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
930      .Case("ast", FrontendOptions::IK_AST)
931      .Default(FrontendOptions::IK_None);
932    if (DashX == FrontendOptions::IK_None)
933      Diags.Report(diag::err_drv_invalid_value)
934        << A->getAsString(Args) << A->getValue(Args);
935  }
936
937  // '-' is the default input if none is given.
938  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
939  Opts.Inputs.clear();
940  if (Inputs.empty())
941    Inputs.push_back("-");
942  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
943    FrontendOptions::InputKind IK = DashX;
944    if (IK == FrontendOptions::IK_None) {
945      IK = FrontendOptions::getInputKindForExtension(
946        llvm::StringRef(Inputs[i]).rsplit('.').second);
947      // FIXME: Remove this hack.
948      if (i == 0)
949        DashX = IK;
950    }
951    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
952  }
953
954  return DashX;
955}
956
957std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
958                                                 void *MainAddr) {
959  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
960
961  if (!P.isEmpty()) {
962    P.eraseComponent();  // Remove /clang from foo/bin/clang
963    P.eraseComponent();  // Remove /bin   from foo/bin
964
965    // Get foo/lib/clang/<version>/include
966    P.appendComponent("lib");
967    P.appendComponent("clang");
968    P.appendComponent(CLANG_VERSION_STRING);
969  }
970
971  return P.str();
972}
973
974static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
975  using namespace cc1options;
976  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
977  Opts.Verbose = Args.hasArg(OPT_v);
978  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
979  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
980  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
981
982  // Add -I... and -F... options in order.
983  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
984         ie = Args.filtered_end(); it != ie; ++it)
985    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
986                 /*IsFramework=*/ it->getOption().matches(OPT_F));
987
988  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
989  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
990  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
991                                             OPT_iwithprefixbefore),
992         ie = Args.filtered_end(); it != ie; ++it) {
993    if (it->getOption().matches(OPT_iprefix))
994      Prefix = it->getValue(Args);
995    else if (it->getOption().matches(OPT_iwithprefix))
996      Opts.AddPath(Prefix.str() + it->getValue(Args),
997                   frontend::System, false, false);
998    else
999      Opts.AddPath(Prefix.str() + it->getValue(Args),
1000                   frontend::Angled, false, false);
1001  }
1002
1003  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1004         ie = Args.filtered_end(); it != ie; ++it)
1005    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1006  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1007         ie = Args.filtered_end(); it != ie; ++it)
1008    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1009  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1010         ie = Args.filtered_end(); it != ie; ++it)
1011    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1012
1013  // FIXME: Need options for the various environment variables!
1014}
1015
1016static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1017                          FrontendOptions::InputKind IK,
1018                          Diagnostic &Diags) {
1019  // FIXME: Cleanup per-file based stuff.
1020
1021  // Set some properties which depend soley on the input kind; it would be nice
1022  // to move these to the language standard, and have the driver resolve the
1023  // input kind + language standard.
1024  if (IK == FrontendOptions::IK_Asm) {
1025    Opts.AsmPreprocessor = 1;
1026  } else if (IK == FrontendOptions::IK_ObjC ||
1027             IK == FrontendOptions::IK_ObjCXX ||
1028             IK == FrontendOptions::IK_PreprocessedObjC ||
1029             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1030    Opts.ObjC1 = Opts.ObjC2 = 1;
1031  }
1032
1033  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1034  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1035    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1036#define LANGSTANDARD(id, name, desc, features) \
1037      .Case(name, LangStandard::lang_##id)
1038#include "clang/Frontend/LangStandards.def"
1039      .Default(LangStandard::lang_unspecified);
1040    if (LangStd == LangStandard::lang_unspecified)
1041      Diags.Report(diag::err_drv_invalid_value)
1042        << A->getAsString(Args) << A->getValue(Args);
1043  }
1044
1045  if (LangStd == LangStandard::lang_unspecified) {
1046    // Based on the base language, pick one.
1047    switch (IK) {
1048    case FrontendOptions::IK_None:
1049    case FrontendOptions::IK_AST:
1050      assert(0 && "Invalid input kind!");
1051    case FrontendOptions::IK_OpenCL:
1052      LangStd = LangStandard::lang_opencl;
1053      break;
1054    case FrontendOptions::IK_Asm:
1055    case FrontendOptions::IK_C:
1056    case FrontendOptions::IK_PreprocessedC:
1057    case FrontendOptions::IK_ObjC:
1058    case FrontendOptions::IK_PreprocessedObjC:
1059      LangStd = LangStandard::lang_gnu99;
1060      break;
1061    case FrontendOptions::IK_CXX:
1062    case FrontendOptions::IK_PreprocessedCXX:
1063    case FrontendOptions::IK_ObjCXX:
1064    case FrontendOptions::IK_PreprocessedObjCXX:
1065      LangStd = LangStandard::lang_gnucxx98;
1066      break;
1067    }
1068  }
1069
1070  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1071  Opts.BCPLComment = Std.hasBCPLComments();
1072  Opts.C99 = Std.isC99();
1073  Opts.CPlusPlus = Std.isCPlusPlus();
1074  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1075  Opts.Digraphs = Std.hasDigraphs();
1076  Opts.GNUMode = Std.isGNUMode();
1077  Opts.GNUInline = !Std.isC99();
1078  Opts.HexFloats = Std.hasHexFloats();
1079  Opts.ImplicitInt = Std.hasImplicitInt();
1080
1081  // OpenCL has some additional defaults.
1082  if (LangStd == LangStandard::lang_opencl) {
1083    Opts.OpenCL = 1;
1084    Opts.AltiVec = 1;
1085    Opts.CXXOperatorNames = 1;
1086    Opts.LaxVectorConversions = 1;
1087  }
1088
1089  // OpenCL and C++ both have bool, true, false keywords.
1090  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1091
1092  if (Opts.CPlusPlus)
1093    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1094
1095  if (Args.hasArg(OPT_fobjc_gc_only))
1096    Opts.setGCMode(LangOptions::GCOnly);
1097  else if (Args.hasArg(OPT_fobjc_gc))
1098    Opts.setGCMode(LangOptions::HybridGC);
1099
1100  if (Args.hasArg(OPT_print_ivar_layout))
1101    Opts.ObjCGCBitmapPrint = 1;
1102
1103  if (Args.hasArg(OPT_faltivec))
1104    Opts.AltiVec = 1;
1105
1106  if (Args.hasArg(OPT_pthread))
1107    Opts.POSIXThreads = 1;
1108
1109  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1110                                        "default");
1111  if (Vis == "default")
1112    Opts.setVisibilityMode(LangOptions::Default);
1113  else if (Vis == "hidden")
1114    Opts.setVisibilityMode(LangOptions::Hidden);
1115  else if (Vis == "protected")
1116    Opts.setVisibilityMode(LangOptions::Protected);
1117  else
1118    Diags.Report(diag::err_drv_invalid_value)
1119      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1120
1121  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1122
1123  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1124  // is specified, or -std is set to a conforming mode.
1125  Opts.Trigraphs = !Opts.GNUMode;
1126  if (Args.hasArg(OPT_trigraphs))
1127    Opts.Trigraphs = 1;
1128
1129  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1130                                   OPT_fno_dollars_in_identifiers,
1131                                   !Opts.AsmPreprocessor);
1132  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1133  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1134  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1135  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1136      Opts.LaxVectorConversions = 0;
1137  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1138  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1139  Opts.Blocks = Args.hasArg(OPT_fblocks);
1140  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1141  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1142  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1143  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1144  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1145  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1146  Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1147  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1148  Opts.MathErrno = !Args.hasArg(OPT_fno_math_errno);
1149  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1150                                               Diags);
1151  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1152  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1153                                                 OPT_fconstant_string_class);
1154  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1155  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1156  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1157  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1158  Opts.Static = Args.hasArg(OPT_static_define);
1159  Opts.OptimizeSize = 0;
1160
1161  // FIXME: Eliminate this dependency.
1162  unsigned Opt =
1163    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1164  Opts.Optimize = Opt != 0;
1165
1166  // This is the __NO_INLINE__ define, which just depends on things like the
1167  // optimization level and -fno-inline, not actually whether the backend has
1168  // inlining enabled.
1169  //
1170  // FIXME: This is affected by other options (-fno-inline).
1171  Opts.NoInline = !Opt;
1172
1173  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1174  switch (SSP) {
1175  default:
1176    Diags.Report(diag::err_drv_invalid_value)
1177      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1178    break;
1179  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1180  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1181  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1182  }
1183}
1184
1185static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1186                                  Diagnostic &Diags) {
1187  using namespace cc1options;
1188  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1189  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1190  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1191      Opts.TokenCache = A->getValue(Args);
1192  else
1193    Opts.TokenCache = Opts.ImplicitPTHInclude;
1194  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1195
1196  // Add macros from the command line.
1197  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1198         ie = Args.filtered_end(); it != ie; ++it) {
1199    if (it->getOption().matches(OPT_D))
1200      Opts.addMacroDef(it->getValue(Args));
1201    else
1202      Opts.addMacroUndef(it->getValue(Args));
1203  }
1204
1205  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1206
1207  // Add the ordered list of -includes.
1208  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1209                                             OPT_include_pth),
1210         ie = Args.filtered_end(); it != ie; ++it) {
1211    // PCH is handled specially, we need to extra the original include path.
1212    if (it->getOption().matches(OPT_include_pch)) {
1213      std::string OriginalFile =
1214        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1215      if (OriginalFile.empty())
1216        continue;
1217
1218      Opts.Includes.push_back(OriginalFile);
1219    } else
1220      Opts.Includes.push_back(it->getValue(Args));
1221  }
1222
1223  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1224         ie = Args.filtered_end(); it != ie; ++it) {
1225    std::pair<llvm::StringRef,llvm::StringRef> Split =
1226      llvm::StringRef(it->getValue(Args)).split(';');
1227
1228    if (Split.second.empty()) {
1229      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1230      continue;
1231    }
1232
1233    Opts.addRemappedFile(Split.first, Split.second);
1234  }
1235}
1236
1237static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1238                                        ArgList &Args) {
1239  using namespace cc1options;
1240  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1241  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1242  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1243  Opts.ShowComments = Args.hasArg(OPT_C);
1244  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1245}
1246
1247static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1248  using namespace cc1options;
1249  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1250  Opts.CPU = getLastArgValue(Args, OPT_mcpu);
1251  Opts.Triple = getLastArgValue(Args, OPT_triple);
1252  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1253
1254  // Use the host triple if unspecified.
1255  if (Opts.Triple.empty())
1256    Opts.Triple = llvm::sys::getHostTriple();
1257}
1258
1259//
1260
1261void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1262                                        const char **ArgBegin,
1263                                        const char **ArgEnd,
1264                                        Diagnostic &Diags) {
1265  // Parse the arguments.
1266  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1267  unsigned MissingArgIndex, MissingArgCount;
1268  llvm::OwningPtr<InputArgList> Args(
1269    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1270
1271  // Check for missing argument error.
1272  if (MissingArgCount)
1273    Diags.Report(diag::err_drv_missing_argument)
1274      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1275
1276  // Issue errors on unknown arguments.
1277  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1278         ie = Args->filtered_end(); it != ie; ++it)
1279    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1280
1281  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1282  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1283  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1284  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1285  FrontendOptions::InputKind DashX =
1286    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1287  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1288  if (DashX != FrontendOptions::IK_AST)
1289    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1290  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1291  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1292  ParseTargetArgs(Res.getTargetOpts(), *Args);
1293}
1294