CompilerInvocation.cpp revision d93256e55673a17d18543397ec462416acb13792 
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.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.AsmVerbose)
152    Res.push_back("-masm-verbose");
153  if (!Opts.CodeModel.empty()) {
154    Res.push_back("-mcode-model");
155    Res.push_back(Opts.CodeModel);
156  }
157  if (!Opts.DebugPass.empty()) {
158    Res.push_back("-mdebug-pass");
159    Res.push_back(Opts.DebugPass);
160  }
161  if (Opts.DisableFPElim)
162    Res.push_back("-mdisable-fp-elim");
163  if (!Opts.FloatABI.empty()) {
164    Res.push_back("-mfloat-abi");
165    Res.push_back(Opts.FloatABI);
166  }
167  if (!Opts.LimitFloatPrecision.empty()) {
168    Res.push_back("-mlimit-float-precision");
169    Res.push_back(Opts.LimitFloatPrecision);
170  }
171  if (Opts.NoZeroInitializedInBSS)
172    Res.push_back("-mno-zero-initialized-bss");
173  if (Opts.SoftFloat)
174    Res.push_back("-msoft-float");
175  if (Opts.UnwindTables)
176    Res.push_back("-munwind-tables");
177  if (Opts.RelocationModel != "pic") {
178    Res.push_back("-mrelocation-model");
179    Res.push_back(Opts.RelocationModel);
180  }
181}
182
183static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
184                                       std::vector<std::string> &Res) {
185  if (Opts.IncludeSystemHeaders)
186    Res.push_back("-sys-header-deps");
187  if (Opts.UsePhonyTargets)
188    Res.push_back("-MP");
189  if (!Opts.OutputFile.empty()) {
190    Res.push_back("-dependency-file");
191    Res.push_back(Opts.OutputFile);
192  }
193  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
194    Res.push_back("-MT");
195    Res.push_back(Opts.Targets[i]);
196  }
197}
198
199static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
200                                 std::vector<std::string> &Res) {
201  if (Opts.IgnoreWarnings)
202    Res.push_back("-w");
203  if (Opts.NoRewriteMacros)
204    Res.push_back("-Wno-rewrite-macros");
205  if (Opts.Pedantic)
206    Res.push_back("-pedantic");
207  if (Opts.PedanticErrors)
208    Res.push_back("-pedantic-errors");
209  if (!Opts.ShowColumn)
210    Res.push_back("-fno-show-column");
211  if (!Opts.ShowLocation)
212    Res.push_back("-fno-show-source-location");
213  if (!Opts.ShowCarets)
214    Res.push_back("-fno-caret-diagnostics");
215  if (!Opts.ShowFixits)
216    Res.push_back("-fno-diagnostics-fixit-info");
217  if (Opts.ShowSourceRanges)
218    Res.push_back("-fdiagnostics-print-source-range-info");
219  if (Opts.ShowColors)
220    Res.push_back("-fcolor-diagnostics");
221  if (Opts.VerifyDiagnostics)
222    Res.push_back("-verify");
223  if (Opts.BinaryOutput)
224    Res.push_back("-fdiagnostics-binary");
225  if (Opts.ShowOptionNames)
226    Res.push_back("-fdiagnostics-show-option");
227  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
228    Res.push_back("-ftabstop");
229    Res.push_back(llvm::utostr(Opts.TabStop));
230  }
231  if (Opts.MessageLength) {
232    Res.push_back("-fmessage-length");
233    Res.push_back(llvm::utostr(Opts.MessageLength));
234  }
235  if (!Opts.DumpBuildInformation.empty()) {
236    Res.push_back("-dump-build-information");
237    Res.push_back(Opts.DumpBuildInformation);
238  }
239  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
240    Res.push_back("-W" + Opts.Warnings[i]);
241}
242
243static const char *getInputKindName(FrontendOptions::InputKind Kind) {
244  switch (Kind) {
245  case FrontendOptions::IK_None:              break;
246  case FrontendOptions::IK_AST:               return "ast";
247  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
248  case FrontendOptions::IK_C:                 return "c";
249  case FrontendOptions::IK_CXX:               return "c++";
250  case FrontendOptions::IK_ObjC:              return "objective-c";
251  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
252  case FrontendOptions::IK_OpenCL:            return "cl";
253  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
254  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
255  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
256  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
257  }
258
259  llvm_unreachable("Unexpected language kind!");
260  return 0;
261}
262
263static const char *getActionName(frontend::ActionKind Kind) {
264  switch (Kind) {
265  case frontend::PluginAction:
266  case frontend::InheritanceView:
267    llvm_unreachable("Invalid kind!");
268
269  case frontend::ASTDump:                return "-ast-dump";
270  case frontend::ASTPrint:               return "-ast-print";
271  case frontend::ASTPrintXML:            return "-ast-print-xml";
272  case frontend::ASTView:                return "-ast-view";
273  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
274  case frontend::DumpRecordLayouts:      return "-dump-record-layouts";
275  case frontend::DumpTokens:             return "-dump-tokens";
276  case frontend::EmitAssembly:           return "-S";
277  case frontend::EmitBC:                 return "-emit-llvm-bc";
278  case frontend::EmitHTML:               return "-emit-html";
279  case frontend::EmitLLVM:               return "-emit-llvm";
280  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
281  case frontend::FixIt:                  return "-fixit";
282  case frontend::GeneratePCH:            return "-emit-pch";
283  case frontend::GeneratePTH:            return "-emit-pth";
284  case frontend::ParseNoop:              return "-parse-noop";
285  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
286  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
287  case frontend::PrintDeclContext:       return "-print-decl-contexts";
288  case frontend::PrintPreprocessedInput: return "-E";
289  case frontend::RewriteMacros:          return "-rewrite-macros";
290  case frontend::RewriteObjC:            return "-rewrite-objc";
291  case frontend::RewriteTest:            return "-rewrite-test";
292  case frontend::RunAnalysis:            return "-analyze";
293  case frontend::RunPreprocessorOnly:    return "-Eonly";
294  }
295
296  llvm_unreachable("Unexpected language kind!");
297  return 0;
298}
299
300static void FrontendOptsToArgs(const FrontendOptions &Opts,
301                               std::vector<std::string> &Res) {
302  if (!Opts.DebugCodeCompletionPrinter)
303    Res.push_back("-no-code-completion-debug-printer");
304  if (Opts.DisableFree)
305    Res.push_back("-disable-free");
306  if (Opts.EmptyInputOnly)
307    Res.push_back("-empty-input-only");
308  if (Opts.RelocatablePCH)
309    Res.push_back("-relocatable-pch");
310  if (Opts.ShowHelp)
311    Res.push_back("-help");
312  if (Opts.ShowMacrosInCodeCompletion)
313    Res.push_back("-code-completion-macros");
314  if (Opts.ShowStats)
315    Res.push_back("-print-stats");
316  if (Opts.ShowTimers)
317    Res.push_back("-ftime-report");
318  if (Opts.ShowVersion)
319    Res.push_back("-version");
320
321  bool NeedLang = false;
322  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
323    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
324        Opts.Inputs[i].first)
325      NeedLang = true;
326  if (NeedLang) {
327    Res.push_back("-x");
328    Res.push_back(getInputKindName(Opts.Inputs[0].first));
329  }
330  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
331    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
332           "Unable to represent this input vector!");
333    Res.push_back(Opts.Inputs[i].second);
334  }
335
336  if (!Opts.OutputFile.empty()) {
337    Res.push_back("-o");
338    Res.push_back(Opts.OutputFile);
339  }
340  if (!Opts.ViewClassInheritance.empty()) {
341    Res.push_back("-cxx-inheritance-view");
342    Res.push_back(Opts.ViewClassInheritance);
343  }
344  for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
345    Res.push_back("-fixit-at");
346    Res.push_back(Opts.FixItLocations[i].FileName + ":" +
347                  llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
348                  llvm::utostr(Opts.FixItLocations[i].Column));
349  }
350  if (!Opts.CodeCompletionAt.FileName.empty()) {
351    Res.push_back("-code-completion-at");
352    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
353                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
354                  llvm::utostr(Opts.CodeCompletionAt.Column));
355  }
356  if (Opts.ProgramAction != frontend::InheritanceView &&
357      Opts.ProgramAction != frontend::PluginAction)
358    Res.push_back(getActionName(Opts.ProgramAction));
359  if (!Opts.ActionName.empty()) {
360    Res.push_back("-plugin");
361    Res.push_back(Opts.ActionName);
362  }
363  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
364    Res.push_back("-load");
365    Res.push_back(Opts.Plugins[i]);
366  }
367}
368
369static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
370                                   std::vector<std::string> &Res) {
371  if (Opts.Sysroot != "/") {
372    Res.push_back("-isysroot");
373    Res.push_back(Opts.Sysroot);
374  }
375
376  /// User specified include entries.
377  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
378    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
379    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
380      llvm::llvm_report_error("Invalid option set!");
381    if (E.IsUserSupplied) {
382      if (E.Group == frontend::After) {
383        Res.push_back("-idirafter");
384      } else if (E.Group == frontend::Quoted) {
385        Res.push_back("-iquote");
386      } else if (E.Group == frontend::System) {
387        Res.push_back("-isystem");
388      } else {
389        assert(E.Group == frontend::Angled && "Invalid group!");
390        Res.push_back(E.IsFramework ? "-F" : "-I");
391      }
392    } else {
393      if (E.Group != frontend::Angled && E.Group != frontend::System)
394        llvm::llvm_report_error("Invalid option set!");
395      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
396                    "-iwithprefix");
397    }
398    Res.push_back(E.Path);
399  }
400
401  if (!Opts.EnvIncPath.empty()) {
402    // FIXME: Provide an option for this, and move env detection to driver.
403    llvm::llvm_report_error("Not yet implemented!");
404  }
405  if (!Opts.CEnvIncPath.empty()) {
406    // FIXME: Provide an option for this, and move env detection to driver.
407    llvm::llvm_report_error("Not yet implemented!");
408  }
409  if (!Opts.ObjCEnvIncPath.empty()) {
410    // FIXME: Provide an option for this, and move env detection to driver.
411    llvm::llvm_report_error("Not yet implemented!");
412  }
413  if (!Opts.CXXEnvIncPath.empty()) {
414    // FIXME: Provide an option for this, and move env detection to driver.
415    llvm::llvm_report_error("Not yet implemented!");
416  }
417  if (!Opts.ObjCXXEnvIncPath.empty()) {
418    // FIXME: Provide an option for this, and move env detection to driver.
419    llvm::llvm_report_error("Not yet implemented!");
420  }
421  if (!Opts.ResourceDir.empty()) {
422    Res.push_back("-resource-dir");
423    Res.push_back(Opts.ResourceDir);
424  }
425  if (!Opts.UseStandardIncludes)
426    Res.push_back("-nostdinc");
427  if (Opts.Verbose)
428    Res.push_back("-v");
429}
430
431static void LangOptsToArgs(const LangOptions &Opts,
432                           std::vector<std::string> &Res) {
433  LangOptions DefaultLangOpts;
434
435  // FIXME: Need to set -std to get all the implicit options.
436
437  // FIXME: We want to only pass options relative to the defaults, which
438  // requires constructing a target. :(
439  //
440  // It would be better to push the all target specific choices into the driver,
441  // so that everything below that was more uniform.
442
443  if (Opts.Trigraphs)
444    Res.push_back("-trigraphs");
445  // Implicit based on the input kind:
446  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
447  // Implicit based on the input language standard:
448  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
449  if (Opts.DollarIdents)
450    Res.push_back("-fdollars-in-identifiers");
451  if (Opts.Microsoft)
452    Res.push_back("-fms-extensions");
453  if (Opts.ObjCNonFragileABI)
454    Res.push_back("-fobjc-nonfragile-abi");
455  // NoInline is implicit.
456  if (!Opts.CXXOperatorNames)
457    Res.push_back("-fno-operator-names");
458  if (Opts.PascalStrings)
459    Res.push_back("-fpascal-strings");
460  if (Opts.CatchUndefined)
461    Res.push_back("-fcatch-undefined-behavior");
462  if (Opts.WritableStrings)
463    Res.push_back("-fwritable-strings");
464  if (!Opts.LaxVectorConversions)
465    Res.push_back("-fno-lax-vector-conversions");
466  if (Opts.AltiVec)
467    Res.push_back("-faltivec");
468  if (Opts.Exceptions)
469    Res.push_back("-fexceptions");
470  if (!Opts.RTTI)
471    Res.push_back("-fno-rtti");
472  if (!Opts.NeXTRuntime)
473    Res.push_back("-fgnu-runtime");
474  if (Opts.Freestanding)
475    Res.push_back("-ffreestanding");
476  if (Opts.NoBuiltin)
477    Res.push_back("-fno-builtin");
478  if (!Opts.AssumeSaneOperatorNew)
479    Res.push_back("-fno-assume-sane-operator-new");
480  if (Opts.ThreadsafeStatics)
481    llvm::llvm_report_error("FIXME: Not yet implemented!");
482  if (Opts.POSIXThreads)
483    Res.push_back("-pthread");
484  if (Opts.Blocks)
485    Res.push_back("-fblocks");
486  if (Opts.EmitAllDecls)
487    Res.push_back("-femit-all-decls");
488  if (Opts.MathErrno)
489    Res.push_back("-fmath-errno");
490  if (Opts.OverflowChecking)
491    Res.push_back("-ftrapv");
492  if (Opts.HeinousExtensions)
493    Res.push_back("-fheinous-gnu-extensions");
494  // Optimize is implicit.
495  // OptimizeSize is implicit.
496  if (Opts.Static)
497    Res.push_back("-static-define");
498  if (Opts.PICLevel) {
499    Res.push_back("-pic-level");
500    Res.push_back(llvm::utostr(Opts.PICLevel));
501  }
502  if (Opts.ObjCGCBitmapPrint)
503    Res.push_back("-print-ivar-layout");
504  // FIXME: Don't forget to update when the default changes!
505  if (Opts.AccessControl)
506    Res.push_back("-faccess-control");
507  if (!Opts.CharIsSigned)
508    Res.push_back("-fno-signed-char");
509  if (Opts.ShortWChar)
510    Res.push_back("-fshort-wchar");
511  if (!Opts.ElideConstructors)
512    Res.push_back("-fno-elide-constructors");
513  if (Opts.getGCMode() != LangOptions::NonGC) {
514    if (Opts.getGCMode() == LangOptions::HybridGC) {
515      Res.push_back("-fobjc-gc");
516    } else {
517      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
518      Res.push_back("-fobjc-gc-only");
519    }
520  }
521  if (Opts.getVisibilityMode() != LangOptions::Default) {
522    Res.push_back("-fvisibility");
523    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
524      Res.push_back("hidden");
525    } else {
526      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
527             "Invalid visibility!");
528      Res.push_back("protected");
529    }
530  }
531  if (Opts.getStackProtectorMode() != 0) {
532    Res.push_back("-stack-protector");
533    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
534  }
535  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
536    Res.push_back("-ftemplate-depth");
537    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
538  }
539  if (!Opts.ObjCConstantStringClass.empty()) {
540    Res.push_back("-fconstant-string-class");
541    Res.push_back(Opts.ObjCConstantStringClass);
542  }
543}
544
545static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
546                                   std::vector<std::string> &Res) {
547  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
548    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
549                  Opts.Macros[i].first);
550  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
551    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
552    Res.push_back("-include");
553    Res.push_back(Opts.Includes[i]);
554  }
555  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
556    Res.push_back("-imacros");
557    Res.push_back(Opts.MacroIncludes[i]);
558  }
559  if (!Opts.UsePredefines)
560    Res.push_back("-undef");
561  if (!Opts.ImplicitPCHInclude.empty()) {
562    Res.push_back("-include-pch");
563    Res.push_back(Opts.ImplicitPCHInclude);
564  }
565  if (!Opts.ImplicitPTHInclude.empty()) {
566    Res.push_back("-include-pth");
567    Res.push_back(Opts.ImplicitPTHInclude);
568  }
569  if (!Opts.TokenCache.empty()) {
570    if (Opts.ImplicitPTHInclude.empty()) {
571      Res.push_back("-token-cache");
572      Res.push_back(Opts.TokenCache);
573    } else
574      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
575             "Unsupported option combination!");
576  }
577  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
578    Res.push_back("-remap-file");
579    Res.push_back(Opts.RemappedFiles[i].first + ";" +
580                  Opts.RemappedFiles[i].second);
581  }
582}
583
584static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
585                                         std::vector<std::string> &Res) {
586  if (!Opts.ShowCPP && !Opts.ShowMacros)
587    llvm::llvm_report_error("Invalid option combination!");
588
589  if (Opts.ShowCPP && Opts.ShowMacros)
590    Res.push_back("-dD");
591  else if (!Opts.ShowCPP && Opts.ShowMacros)
592    Res.push_back("-dM");
593
594  if (!Opts.ShowLineMarkers)
595    Res.push_back("-P");
596  if (Opts.ShowComments)
597    Res.push_back("-C");
598  if (Opts.ShowMacroComments)
599    Res.push_back("-CC");
600}
601
602static void TargetOptsToArgs(const TargetOptions &Opts,
603                             std::vector<std::string> &Res) {
604  Res.push_back("-triple");
605  Res.push_back(Opts.Triple);
606  if (!Opts.CPU.empty()) {
607    Res.push_back("-target-cpu");
608    Res.push_back(Opts.CPU);
609  }
610  if (!Opts.ABI.empty()) {
611    Res.push_back("-target-abi");
612    Res.push_back(Opts.ABI);
613  }
614  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
615    Res.push_back("-target-feature");
616    Res.push_back(Opts.Features[i]);
617  }
618}
619
620void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
621  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
622  CodeGenOptsToArgs(getCodeGenOpts(), Res);
623  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
624  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
625  FrontendOptsToArgs(getFrontendOpts(), Res);
626  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
627  LangOptsToArgs(getLangOpts(), Res);
628  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
629  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
630  TargetOptsToArgs(getTargetOpts(), Res);
631}
632
633//===----------------------------------------------------------------------===//
634// Deserialization (to args)
635//===----------------------------------------------------------------------===//
636
637using namespace clang::driver;
638using namespace clang::driver::cc1options;
639
640static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
641                                       llvm::StringRef Default = "") {
642  if (Arg *A = Args.getLastArg(ID))
643    return A->getValue(Args);
644  return Default;
645}
646
647static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
648                              int Default, Diagnostic &Diags) {
649  Arg *A = Args.getLastArg(ID);
650  if (!A)
651    return Default;
652
653  int Res = Default;
654  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
655    Diags.Report(diag::err_drv_invalid_int_value)
656        << A->getAsString(Args) << A->getValue(Args);
657
658  return Res;
659}
660
661static std::vector<std::string>
662getAllArgValues(ArgList &Args, cc1options::ID ID) {
663  llvm::SmallVector<const char *, 16> Values;
664  Args.AddAllArgValues(Values, ID);
665  return std::vector<std::string>(Values.begin(), Values.end());
666}
667
668//
669
670static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
671                              Diagnostic &Diags) {
672  using namespace cc1options;
673
674  Opts.AnalysisList.clear();
675#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
676  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
677#include "clang/Frontend/Analyses.def"
678
679  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
680    llvm::StringRef Name = A->getValue(Args);
681    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
682#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
683      .Case(CMDFLAG, NAME##Model)
684#include "clang/Frontend/Analyses.def"
685      .Default(NumStores);
686    // FIXME: Error handling.
687    if (Value == NumStores)
688      Diags.Report(diag::err_drv_invalid_value)
689        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
690    else
691      Opts.AnalysisStoreOpt = Value;
692  }
693
694  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
695    llvm::StringRef Name = A->getValue(Args);
696    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
697#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
698      .Case(CMDFLAG, NAME##Model)
699#include "clang/Frontend/Analyses.def"
700      .Default(NumConstraints);
701    // FIXME: Error handling.
702    if (Value == NumConstraints)
703      Diags.Report(diag::err_drv_invalid_value)
704        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
705    else
706      Opts.AnalysisConstraintsOpt = Value;
707  }
708
709  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
710    llvm::StringRef Name = A->getValue(Args);
711    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
712#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
713      .Case(CMDFLAG, PD_##NAME)
714#include "clang/Frontend/Analyses.def"
715      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
716    // FIXME: Error handling.
717    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
718      Diags.Report(diag::err_drv_invalid_value)
719        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
720    else
721      Opts.AnalysisDiagOpt = Value;
722  }
723
724  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
725  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
726  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
727  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
728  Opts.AnalyzeNestedBlocks =
729    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
730  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
731  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
732  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
733  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
734  Opts.EnableExperimentalInternalChecks =
735    Args.hasArg(OPT_analyzer_experimental_internal_checks);
736  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
737}
738
739static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
740                             Diagnostic &Diags) {
741  using namespace cc1options;
742  // -Os implies -O2
743  if (Args.hasArg(OPT_Os))
744    Opts.OptimizationLevel = 2;
745  else {
746    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
747    if (Opts.OptimizationLevel > 3) {
748      Diags.Report(diag::err_drv_invalid_value)
749        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
750      Opts.OptimizationLevel = 3;
751    }
752  }
753
754  // We must always run at least the always inlining pass.
755  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
756    : CodeGenOptions::OnlyAlwaysInlining;
757
758  Opts.DebugInfo = Args.hasArg(OPT_g);
759  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
760  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
761  Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
762  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
763  Opts.NoCommon = Args.hasArg(OPT_fno_common);
764  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
765  Opts.OptimizeSize = Args.hasArg(OPT_Os);
766  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
767
768  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
769  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
770  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
771  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
772  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
773  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
774  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
775  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
776  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
777  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
778
779  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
780
781  // FIXME: Put elsewhere?
782#ifdef NDEBUG
783  Opts.VerifyModule = 0;
784#else
785  Opts.VerifyModule = 1;
786#endif
787}
788
789static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
790                                      ArgList &Args) {
791  using namespace cc1options;
792  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
793  Opts.Targets = getAllArgValues(Args, OPT_MT);
794  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
795  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
796}
797
798static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
799                                Diagnostic &Diags) {
800  using namespace cc1options;
801  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
802  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
803  Opts.Pedantic = Args.hasArg(OPT_pedantic);
804  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
805  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
806  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
807  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
808  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
809  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
810  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
811  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
812  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
813  Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
814  Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
815                                    DiagnosticOptions::DefaultTabStop, Diags);
816  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
817    Diags.Report(diag::warn_ignoring_ftabstop_value)
818      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
819    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
820  }
821  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
822  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
823  Opts.Warnings = getAllArgValues(Args, OPT_W);
824}
825
826static FrontendOptions::InputKind
827ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
828  using namespace cc1options;
829  Opts.ProgramAction = frontend::ParseSyntaxOnly;
830  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
831    switch (A->getOption().getID()) {
832    default:
833      assert(0 && "Invalid option in group!");
834    case OPT_ast_dump:
835      Opts.ProgramAction = frontend::ASTDump; break;
836    case OPT_ast_print:
837      Opts.ProgramAction = frontend::ASTPrint; break;
838    case OPT_ast_print_xml:
839      Opts.ProgramAction = frontend::ASTPrintXML; break;
840    case OPT_ast_view:
841      Opts.ProgramAction = frontend::ASTView; break;
842    case OPT_dump_raw_tokens:
843      Opts.ProgramAction = frontend::DumpRawTokens; break;
844    case OPT_dump_record_layouts:
845      Opts.ProgramAction = frontend::DumpRecordLayouts; break;
846    case OPT_dump_tokens:
847      Opts.ProgramAction = frontend::DumpTokens; break;
848    case OPT_S:
849      Opts.ProgramAction = frontend::EmitAssembly; break;
850    case OPT_emit_llvm_bc:
851      Opts.ProgramAction = frontend::EmitBC; break;
852    case OPT_emit_html:
853      Opts.ProgramAction = frontend::EmitHTML; break;
854    case OPT_emit_llvm:
855      Opts.ProgramAction = frontend::EmitLLVM; break;
856    case OPT_emit_llvm_only:
857      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
858    case OPT_fixit:
859      Opts.ProgramAction = frontend::FixIt; break;
860    case OPT_emit_pch:
861      Opts.ProgramAction = frontend::GeneratePCH; break;
862    case OPT_emit_pth:
863      Opts.ProgramAction = frontend::GeneratePTH; break;
864    case OPT_parse_noop:
865      Opts.ProgramAction = frontend::ParseNoop; break;
866    case OPT_parse_print_callbacks:
867      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
868    case OPT_fsyntax_only:
869      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
870    case OPT_print_decl_contexts:
871      Opts.ProgramAction = frontend::PrintDeclContext; break;
872    case OPT_E:
873      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
874    case OPT_rewrite_macros:
875      Opts.ProgramAction = frontend::RewriteMacros; break;
876    case OPT_rewrite_objc:
877      Opts.ProgramAction = frontend::RewriteObjC; break;
878    case OPT_rewrite_test:
879      Opts.ProgramAction = frontend::RewriteTest; break;
880    case OPT_analyze:
881      Opts.ProgramAction = frontend::RunAnalysis; break;
882    case OPT_Eonly:
883      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
884    }
885  }
886  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
887    Opts.ProgramAction = frontend::PluginAction;
888    Opts.ActionName = A->getValue(Args);
889  }
890
891  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
892    Opts.CodeCompletionAt =
893      ParsedSourceLocation::FromString(A->getValue(Args));
894    if (Opts.CodeCompletionAt.FileName.empty())
895      Diags.Report(diag::err_drv_invalid_value)
896        << A->getAsString(Args) << A->getValue(Args);
897  }
898  Opts.DebugCodeCompletionPrinter =
899    !Args.hasArg(OPT_no_code_completion_debug_printer);
900  Opts.DisableFree = Args.hasArg(OPT_disable_free);
901  Opts.EmptyInputOnly = Args.hasArg(OPT_empty_input_only);
902
903  Opts.FixItLocations.clear();
904  for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
905         ie = Args.filtered_end(); it != ie; ++it) {
906    const char *Loc = it->getValue(Args);
907    ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
908
909    if (PSL.FileName.empty()) {
910      Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
911      continue;
912    }
913
914    Opts.FixItLocations.push_back(PSL);
915  }
916
917  Opts.OutputFile = getLastArgValue(Args, OPT_o);
918  Opts.Plugins = getAllArgValues(Args, OPT_load);
919  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
920  Opts.ShowHelp = Args.hasArg(OPT_help);
921  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
922  Opts.ShowStats = Args.hasArg(OPT_print_stats);
923  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
924  Opts.ShowVersion = Args.hasArg(OPT_version);
925  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
926
927  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
928  if (const Arg *A = Args.getLastArg(OPT_x)) {
929    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
930      .Case("c", FrontendOptions::IK_C)
931      .Case("cl", FrontendOptions::IK_OpenCL)
932      .Case("c", FrontendOptions::IK_C)
933      .Case("cl", FrontendOptions::IK_OpenCL)
934      .Case("c++", FrontendOptions::IK_CXX)
935      .Case("objective-c", FrontendOptions::IK_ObjC)
936      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
937      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
938      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
939      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
940      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
941      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
942      .Case("c-header", FrontendOptions::IK_C)
943      .Case("objective-c-header", FrontendOptions::IK_ObjC)
944      .Case("c++-header", FrontendOptions::IK_CXX)
945      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
946      .Case("ast", FrontendOptions::IK_AST)
947      .Default(FrontendOptions::IK_None);
948    if (DashX == FrontendOptions::IK_None)
949      Diags.Report(diag::err_drv_invalid_value)
950        << A->getAsString(Args) << A->getValue(Args);
951  }
952
953  // '-' is the default input if none is given.
954  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
955  Opts.Inputs.clear();
956  if (Inputs.empty())
957    Inputs.push_back("-");
958  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
959    FrontendOptions::InputKind IK = DashX;
960    if (IK == FrontendOptions::IK_None) {
961      IK = FrontendOptions::getInputKindForExtension(
962        llvm::StringRef(Inputs[i]).rsplit('.').second);
963      // FIXME: Remove this hack.
964      if (i == 0)
965        DashX = IK;
966    }
967    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
968  }
969
970  return DashX;
971}
972
973std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
974                                                 void *MainAddr) {
975  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
976
977  if (!P.isEmpty()) {
978    P.eraseComponent();  // Remove /clang from foo/bin/clang
979    P.eraseComponent();  // Remove /bin   from foo/bin
980
981    // Get foo/lib/clang/<version>/include
982    P.appendComponent("lib");
983    P.appendComponent("clang");
984    P.appendComponent(CLANG_VERSION_STRING);
985  }
986
987  return P.str();
988}
989
990static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
991  using namespace cc1options;
992  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
993  Opts.Verbose = Args.hasArg(OPT_v);
994  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
995  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
996  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
997
998  // Add -I... and -F... options in order.
999  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1000         ie = Args.filtered_end(); it != ie; ++it)
1001    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1002                 /*IsFramework=*/ it->getOption().matches(OPT_F));
1003
1004  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1005  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1006  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1007                                             OPT_iwithprefixbefore),
1008         ie = Args.filtered_end(); it != ie; ++it) {
1009    if (it->getOption().matches(OPT_iprefix))
1010      Prefix = it->getValue(Args);
1011    else if (it->getOption().matches(OPT_iwithprefix))
1012      Opts.AddPath(Prefix.str() + it->getValue(Args),
1013                   frontend::System, false, false);
1014    else
1015      Opts.AddPath(Prefix.str() + it->getValue(Args),
1016                   frontend::Angled, false, false);
1017  }
1018
1019  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1020         ie = Args.filtered_end(); it != ie; ++it)
1021    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1022  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1023         ie = Args.filtered_end(); it != ie; ++it)
1024    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1025  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1026         ie = Args.filtered_end(); it != ie; ++it)
1027    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1028
1029  // FIXME: Need options for the various environment variables!
1030}
1031
1032static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1033                          FrontendOptions::InputKind IK,
1034                          Diagnostic &Diags) {
1035  // FIXME: Cleanup per-file based stuff.
1036
1037  // Set some properties which depend soley on the input kind; it would be nice
1038  // to move these to the language standard, and have the driver resolve the
1039  // input kind + language standard.
1040  if (IK == FrontendOptions::IK_Asm) {
1041    Opts.AsmPreprocessor = 1;
1042  } else if (IK == FrontendOptions::IK_ObjC ||
1043             IK == FrontendOptions::IK_ObjCXX ||
1044             IK == FrontendOptions::IK_PreprocessedObjC ||
1045             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1046    Opts.ObjC1 = Opts.ObjC2 = 1;
1047  }
1048
1049  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1050  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1051    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1052#define LANGSTANDARD(id, name, desc, features) \
1053      .Case(name, LangStandard::lang_##id)
1054#include "clang/Frontend/LangStandards.def"
1055      .Default(LangStandard::lang_unspecified);
1056    if (LangStd == LangStandard::lang_unspecified)
1057      Diags.Report(diag::err_drv_invalid_value)
1058        << A->getAsString(Args) << A->getValue(Args);
1059  }
1060
1061  if (LangStd == LangStandard::lang_unspecified) {
1062    // Based on the base language, pick one.
1063    switch (IK) {
1064    case FrontendOptions::IK_None:
1065    case FrontendOptions::IK_AST:
1066      assert(0 && "Invalid input kind!");
1067    case FrontendOptions::IK_OpenCL:
1068      LangStd = LangStandard::lang_opencl;
1069      break;
1070    case FrontendOptions::IK_Asm:
1071    case FrontendOptions::IK_C:
1072    case FrontendOptions::IK_PreprocessedC:
1073    case FrontendOptions::IK_ObjC:
1074    case FrontendOptions::IK_PreprocessedObjC:
1075      LangStd = LangStandard::lang_gnu99;
1076      break;
1077    case FrontendOptions::IK_CXX:
1078    case FrontendOptions::IK_PreprocessedCXX:
1079    case FrontendOptions::IK_ObjCXX:
1080    case FrontendOptions::IK_PreprocessedObjCXX:
1081      LangStd = LangStandard::lang_gnucxx98;
1082      break;
1083    }
1084  }
1085
1086  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1087  Opts.BCPLComment = Std.hasBCPLComments();
1088  Opts.C99 = Std.isC99();
1089  Opts.CPlusPlus = Std.isCPlusPlus();
1090  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1091  Opts.Digraphs = Std.hasDigraphs();
1092  Opts.GNUMode = Std.isGNUMode();
1093  Opts.GNUInline = !Std.isC99();
1094  Opts.HexFloats = Std.hasHexFloats();
1095  Opts.ImplicitInt = Std.hasImplicitInt();
1096
1097  // OpenCL has some additional defaults.
1098  if (LangStd == LangStandard::lang_opencl) {
1099    Opts.OpenCL = 1;
1100    Opts.AltiVec = 1;
1101    Opts.CXXOperatorNames = 1;
1102    Opts.LaxVectorConversions = 1;
1103  }
1104
1105  // OpenCL and C++ both have bool, true, false keywords.
1106  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1107
1108  if (Opts.CPlusPlus)
1109    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1110
1111  if (Args.hasArg(OPT_fobjc_gc_only))
1112    Opts.setGCMode(LangOptions::GCOnly);
1113  else if (Args.hasArg(OPT_fobjc_gc))
1114    Opts.setGCMode(LangOptions::HybridGC);
1115
1116  if (Args.hasArg(OPT_print_ivar_layout))
1117    Opts.ObjCGCBitmapPrint = 1;
1118
1119  if (Args.hasArg(OPT_faltivec))
1120    Opts.AltiVec = 1;
1121
1122  if (Args.hasArg(OPT_pthread))
1123    Opts.POSIXThreads = 1;
1124
1125  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1126                                        "default");
1127  if (Vis == "default")
1128    Opts.setVisibilityMode(LangOptions::Default);
1129  else if (Vis == "hidden")
1130    Opts.setVisibilityMode(LangOptions::Hidden);
1131  else if (Vis == "protected")
1132    Opts.setVisibilityMode(LangOptions::Protected);
1133  else
1134    Diags.Report(diag::err_drv_invalid_value)
1135      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1136
1137  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1138
1139  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1140  // is specified, or -std is set to a conforming mode.
1141  Opts.Trigraphs = !Opts.GNUMode;
1142  if (Args.hasArg(OPT_trigraphs))
1143    Opts.Trigraphs = 1;
1144
1145  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1146                                   OPT_fno_dollars_in_identifiers,
1147                                   !Opts.AsmPreprocessor);
1148  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1149  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1150  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1151  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1152      Opts.LaxVectorConversions = 0;
1153  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1154  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1155  Opts.Blocks = Args.hasArg(OPT_fblocks);
1156  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1157  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1158  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1159  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1160  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1161  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1162  Opts.AccessControl = Args.hasArg(OPT_faccess_control);
1163  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1164  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1165  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1166                                               Diags);
1167  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1168  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1169                                                 OPT_fconstant_string_class);
1170  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1171  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1172  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1173  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1174  Opts.Static = Args.hasArg(OPT_static_define);
1175  Opts.OptimizeSize = 0;
1176
1177  // FIXME: Eliminate this dependency.
1178  unsigned Opt =
1179    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1180  Opts.Optimize = Opt != 0;
1181
1182  // This is the __NO_INLINE__ define, which just depends on things like the
1183  // optimization level and -fno-inline, not actually whether the backend has
1184  // inlining enabled.
1185  //
1186  // FIXME: This is affected by other options (-fno-inline).
1187  Opts.NoInline = !Opt;
1188
1189  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1190  switch (SSP) {
1191  default:
1192    Diags.Report(diag::err_drv_invalid_value)
1193      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1194    break;
1195  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1196  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1197  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1198  }
1199}
1200
1201static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1202                                  Diagnostic &Diags) {
1203  using namespace cc1options;
1204  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1205  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1206  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1207      Opts.TokenCache = A->getValue(Args);
1208  else
1209    Opts.TokenCache = Opts.ImplicitPTHInclude;
1210  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1211
1212  // Add macros from the command line.
1213  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1214         ie = Args.filtered_end(); it != ie; ++it) {
1215    if (it->getOption().matches(OPT_D))
1216      Opts.addMacroDef(it->getValue(Args));
1217    else
1218      Opts.addMacroUndef(it->getValue(Args));
1219  }
1220
1221  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1222
1223  // Add the ordered list of -includes.
1224  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1225                                             OPT_include_pth),
1226         ie = Args.filtered_end(); it != ie; ++it) {
1227    // PCH is handled specially, we need to extra the original include path.
1228    if (it->getOption().matches(OPT_include_pch)) {
1229      std::string OriginalFile =
1230        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1231      if (OriginalFile.empty())
1232        continue;
1233
1234      Opts.Includes.push_back(OriginalFile);
1235    } else
1236      Opts.Includes.push_back(it->getValue(Args));
1237  }
1238
1239  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1240         ie = Args.filtered_end(); it != ie; ++it) {
1241    std::pair<llvm::StringRef,llvm::StringRef> Split =
1242      llvm::StringRef(it->getValue(Args)).split(';');
1243
1244    if (Split.second.empty()) {
1245      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1246      continue;
1247    }
1248
1249    Opts.addRemappedFile(Split.first, Split.second);
1250  }
1251}
1252
1253static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1254                                        ArgList &Args) {
1255  using namespace cc1options;
1256  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1257  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1258  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1259  Opts.ShowComments = Args.hasArg(OPT_C);
1260  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1261}
1262
1263static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1264  using namespace cc1options;
1265  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1266  Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1267  Opts.Triple = getLastArgValue(Args, OPT_triple);
1268  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1269
1270  // Use the host triple if unspecified.
1271  if (Opts.Triple.empty())
1272    Opts.Triple = llvm::sys::getHostTriple();
1273}
1274
1275//
1276
1277void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1278                                        const char **ArgBegin,
1279                                        const char **ArgEnd,
1280                                        Diagnostic &Diags) {
1281  // Parse the arguments.
1282  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1283  unsigned MissingArgIndex, MissingArgCount;
1284  llvm::OwningPtr<InputArgList> Args(
1285    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1286
1287  // Check for missing argument error.
1288  if (MissingArgCount)
1289    Diags.Report(diag::err_drv_missing_argument)
1290      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1291
1292  // Issue errors on unknown arguments.
1293  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1294         ie = Args->filtered_end(); it != ie; ++it)
1295    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1296
1297  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1298  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1299  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1300  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1301  FrontendOptions::InputKind DashX =
1302    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1303  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1304  if (DashX != FrontendOptions::IK_AST)
1305    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1306  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1307  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1308  ParseTargetArgs(Res.getTargetOpts(), *Args);
1309}
1310