CompilerInvocation.cpp revision c32647d111e516593b9ba242cad7b8ff4016c155 
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/Basic/FileManager.h"
14#include "clang/Driver/Arg.h"
15#include "clang/Driver/ArgList.h"
16#include "clang/Driver/CC1Options.h"
17#include "clang/Driver/DriverDiagnostic.h"
18#include "clang/Driver/OptTable.h"
19#include "clang/Driver/Option.h"
20#include "clang/Frontend/CompilerInvocation.h"
21#include "clang/Frontend/LangStandard.h"
22#include "clang/Serialization/ASTReader.h"
23#include "llvm/ADT/OwningPtr.h"
24#include "llvm/ADT/SmallVector.h"
25#include "llvm/ADT/StringExtras.h"
26#include "llvm/ADT/StringSwitch.h"
27#include "llvm/ADT/Triple.h"
28#include "llvm/Support/ErrorHandling.h"
29#include "llvm/Support/Host.h"
30#include "llvm/Support/Path.h"
31using namespace clang;
32
33static const char *getAnalysisName(Analyses Kind) {
34  switch (Kind) {
35  default:
36    llvm_unreachable("Unknown analysis kind!");
37#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE)\
38  case NAME: return "-" CMDFLAG;
39#include "clang/Frontend/Analyses.def"
40  }
41}
42
43static const char *getAnalysisStoreName(AnalysisStores Kind) {
44  switch (Kind) {
45  default:
46    llvm_unreachable("Unknown analysis store!");
47#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
48  case NAME##Model: return CMDFLAG;
49#include "clang/Frontend/Analyses.def"
50  }
51}
52
53static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
54  switch (Kind) {
55  default:
56    llvm_unreachable("Unknown analysis constraints!");
57#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
58  case NAME##Model: return CMDFLAG;
59#include "clang/Frontend/Analyses.def"
60  }
61}
62
63static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
64  switch (Kind) {
65  default:
66    llvm_unreachable("Unknown analysis client!");
67#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
68  case PD_##NAME: return CMDFLAG;
69#include "clang/Frontend/Analyses.def"
70  }
71}
72
73//===----------------------------------------------------------------------===//
74// Serialization (to args)
75//===----------------------------------------------------------------------===//
76
77static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
78                               std::vector<std::string> &Res) {
79  for (unsigned i = 0, e = Opts.AnalysisList.size(); i != e; ++i)
80    Res.push_back(getAnalysisName(Opts.AnalysisList[i]));
81  if (Opts.AnalysisStoreOpt != BasicStoreModel) {
82    Res.push_back("-analyzer-store");
83    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
84  }
85  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
86    Res.push_back("-analyzer-constraints");
87    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
88  }
89  if (Opts.AnalysisDiagOpt != PD_HTML) {
90    Res.push_back("-analyzer-output");
91    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
92  }
93  if (!Opts.AnalyzeSpecificFunction.empty()) {
94    Res.push_back("-analyze-function");
95    Res.push_back(Opts.AnalyzeSpecificFunction);
96  }
97  if (Opts.AnalyzeAll)
98    Res.push_back("-analyzer-opt-analyze-headers");
99  if (Opts.AnalyzerDisplayProgress)
100    Res.push_back("-analyzer-display-progress");
101  if (Opts.AnalyzeNestedBlocks)
102    Res.push_back("-analyzer-opt-analyze-nested-blocks");
103  if (Opts.AnalyzerStats)
104    Res.push_back("-analyzer-stats");
105  if (Opts.EagerlyAssume)
106    Res.push_back("-analyzer-eagerly-assume");
107  if (!Opts.PurgeDead)
108    Res.push_back("-analyzer-no-purge-dead");
109  if (Opts.TrimGraph)
110    Res.push_back("-trim-egraph");
111  if (Opts.VisualizeEGDot)
112    Res.push_back("-analyzer-viz-egraph-graphviz");
113  if (Opts.VisualizeEGDot)
114    Res.push_back("-analyzer-viz-egraph-ubigraph");
115  if (Opts.EnableExperimentalChecks)
116    Res.push_back("-analyzer-experimental-checks");
117  if (Opts.EnableExperimentalInternalChecks)
118    Res.push_back("-analyzer-experimental-internal-checks");
119  if (Opts.IdempotentOps)
120    Res.push_back("-analyzer-check-idempotent-operations");
121  if (Opts.BufferOverflows)
122    Res.push_back("-analyzer-check-buffer-overflows");
123}
124
125static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
126                              std::vector<std::string> &Res) {
127  if (Opts.DebugInfo)
128    Res.push_back("-g");
129  if (Opts.DisableLLVMOpts)
130    Res.push_back("-disable-llvm-optzns");
131  if (Opts.DisableRedZone)
132    Res.push_back("-disable-red-zone");
133  if (!Opts.DwarfDebugFlags.empty()) {
134    Res.push_back("-dwarf-debug-flags");
135    Res.push_back(Opts.DwarfDebugFlags);
136  }
137  if (!Opts.MergeAllConstants)
138    Res.push_back("-fno-merge-all-constants");
139  if (Opts.NoCommon)
140    Res.push_back("-fno-common");
141  if (Opts.NoImplicitFloat)
142    Res.push_back("-no-implicit-float");
143  if (Opts.OmitLeafFramePointer)
144    Res.push_back("-momit-leaf-frame-pointer");
145  if (Opts.OptimizeSize) {
146    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
147    Res.push_back("-Os");
148  } else if (Opts.OptimizationLevel != 0)
149    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
150  if (!Opts.MainFileName.empty()) {
151    Res.push_back("-main-file-name");
152    Res.push_back(Opts.MainFileName);
153  }
154  // SimplifyLibCalls is only derived.
155  // TimePasses is only derived.
156  // UnitAtATime is unused.
157  // Inlining is only derived.
158
159  // UnrollLoops is derived, but also accepts an option, no
160  // harm in pushing it back here.
161  if (Opts.UnrollLoops)
162    Res.push_back("-funroll-loops");
163  if (Opts.DataSections)
164    Res.push_back("-fdata-sections");
165  if (Opts.FunctionSections)
166    Res.push_back("-ffunction-sections");
167  if (Opts.AsmVerbose)
168    Res.push_back("-masm-verbose");
169  if (!Opts.CodeModel.empty()) {
170    Res.push_back("-mcode-model");
171    Res.push_back(Opts.CodeModel);
172  }
173  if (!Opts.CXAAtExit)
174    Res.push_back("-fno-use-cxa-atexit");
175  if (Opts.CXXCtorDtorAliases)
176    Res.push_back("-mconstructor-aliases");
177  if (!Opts.DebugPass.empty()) {
178    Res.push_back("-mdebug-pass");
179    Res.push_back(Opts.DebugPass);
180  }
181  if (Opts.DisableFPElim)
182    Res.push_back("-mdisable-fp-elim");
183  if (!Opts.FloatABI.empty()) {
184    Res.push_back("-mfloat-abi");
185    Res.push_back(Opts.FloatABI);
186  }
187  if (!Opts.LimitFloatPrecision.empty()) {
188    Res.push_back("-mlimit-float-precision");
189    Res.push_back(Opts.LimitFloatPrecision);
190  }
191  if (Opts.NoZeroInitializedInBSS)
192    Res.push_back("-mno-zero-initialized-bss");
193  switch (Opts.getObjCDispatchMethod()) {
194  case CodeGenOptions::Legacy:
195    break;
196  case CodeGenOptions::Mixed:
197    Res.push_back("-fobjc-dispatch-method=mixed");
198    break;
199  case CodeGenOptions::NonLegacy:
200    Res.push_back("-fobjc-dispatch-method=non-legacy");
201    break;
202  }
203  if (Opts.RelaxAll)
204    Res.push_back("-mrelax-all");
205  if (Opts.SoftFloat)
206    Res.push_back("-msoft-float");
207  if (Opts.UnwindTables)
208    Res.push_back("-munwind-tables");
209  if (Opts.RelocationModel != "pic") {
210    Res.push_back("-mrelocation-model");
211    Res.push_back(Opts.RelocationModel);
212  }
213  if (!Opts.VerifyModule)
214    Res.push_back("-disable-llvm-verifier");
215}
216
217static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
218                                       std::vector<std::string> &Res) {
219  if (Opts.IncludeSystemHeaders)
220    Res.push_back("-sys-header-deps");
221  if (Opts.UsePhonyTargets)
222    Res.push_back("-MP");
223  if (!Opts.OutputFile.empty()) {
224    Res.push_back("-dependency-file");
225    Res.push_back(Opts.OutputFile);
226  }
227  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
228    Res.push_back("-MT");
229    Res.push_back(Opts.Targets[i]);
230  }
231}
232
233static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
234                                 std::vector<std::string> &Res) {
235  if (Opts.IgnoreWarnings)
236    Res.push_back("-w");
237  if (Opts.NoRewriteMacros)
238    Res.push_back("-Wno-rewrite-macros");
239  if (Opts.Pedantic)
240    Res.push_back("-pedantic");
241  if (Opts.PedanticErrors)
242    Res.push_back("-pedantic-errors");
243  if (!Opts.ShowColumn)
244    Res.push_back("-fno-show-column");
245  if (!Opts.ShowLocation)
246    Res.push_back("-fno-show-source-location");
247  if (!Opts.ShowCarets)
248    Res.push_back("-fno-caret-diagnostics");
249  if (!Opts.ShowFixits)
250    Res.push_back("-fno-diagnostics-fixit-info");
251  if (Opts.ShowSourceRanges)
252    Res.push_back("-fdiagnostics-print-source-range-info");
253  if (Opts.ShowParseableFixits)
254    Res.push_back("-fdiagnostics-parseable-fixits");
255  if (Opts.ShowColors)
256    Res.push_back("-fcolor-diagnostics");
257  if (Opts.VerifyDiagnostics)
258    Res.push_back("-verify");
259  if (Opts.ShowOptionNames)
260    Res.push_back("-fdiagnostics-show-option");
261  if (Opts.ShowCategories == 1)
262    Res.push_back("-fdiagnostics-show-category=id");
263  else if (Opts.ShowCategories == 2)
264    Res.push_back("-fdiagnostics-show-category=name");
265  if (Opts.ErrorLimit) {
266    Res.push_back("-ferror-limit");
267    Res.push_back(llvm::utostr(Opts.ErrorLimit));
268  }
269  if (Opts.MacroBacktraceLimit
270                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
271    Res.push_back("-fmacro-backtrace-limit");
272    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
273  }
274  if (Opts.TemplateBacktraceLimit
275                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
276    Res.push_back("-ftemplate-backtrace-limit");
277    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
278  }
279
280  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
281    Res.push_back("-ftabstop");
282    Res.push_back(llvm::utostr(Opts.TabStop));
283  }
284  if (Opts.MessageLength) {
285    Res.push_back("-fmessage-length");
286    Res.push_back(llvm::utostr(Opts.MessageLength));
287  }
288  if (!Opts.DumpBuildInformation.empty()) {
289    Res.push_back("-dump-build-information");
290    Res.push_back(Opts.DumpBuildInformation);
291  }
292  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
293    Res.push_back("-W" + Opts.Warnings[i]);
294}
295
296static const char *getInputKindName(InputKind Kind) {
297  switch (Kind) {
298  case IK_None:              break;
299  case IK_AST:               return "ast";
300  case IK_Asm:               return "assembler-with-cpp";
301  case IK_C:                 return "c";
302  case IK_CXX:               return "c++";
303  case IK_LLVM_IR:           return "ir";
304  case IK_ObjC:              return "objective-c";
305  case IK_ObjCXX:            return "objective-c++";
306  case IK_OpenCL:            return "cl";
307  case IK_CUDA:              return "cuda";
308  case IK_PreprocessedC:     return "cpp-output";
309  case IK_PreprocessedCXX:   return "c++-cpp-output";
310  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
311  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
312  }
313
314  llvm_unreachable("Unexpected language kind!");
315  return 0;
316}
317
318static const char *getActionName(frontend::ActionKind Kind) {
319  switch (Kind) {
320  case frontend::PluginAction:
321  case frontend::InheritanceView:
322    llvm_unreachable("Invalid kind!");
323
324  case frontend::ASTDump:                return "-ast-dump";
325  case frontend::ASTDumpXML:             return "-ast-dump-xml";
326  case frontend::ASTPrint:               return "-ast-print";
327  case frontend::ASTPrintXML:            return "-ast-print-xml";
328  case frontend::ASTView:                return "-ast-view";
329  case frontend::BoostCon:               return "-boostcon";
330  case frontend::CreateModule:           return "-create-module";
331  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
332  case frontend::DumpTokens:             return "-dump-tokens";
333  case frontend::EmitAssembly:           return "-S";
334  case frontend::EmitBC:                 return "-emit-llvm-bc";
335  case frontend::EmitHTML:               return "-emit-html";
336  case frontend::EmitLLVM:               return "-emit-llvm";
337  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
338  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
339  case frontend::EmitObj:                return "-emit-obj";
340  case frontend::FixIt:                  return "-fixit";
341  case frontend::GeneratePCH:            return "-emit-pch";
342  case frontend::GeneratePTH:            return "-emit-pth";
343  case frontend::InitOnly:               return "-init-only";
344  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
345  case frontend::PrintDeclContext:       return "-print-decl-contexts";
346  case frontend::PrintPreamble:          return "-print-preamble";
347  case frontend::PrintPreprocessedInput: return "-E";
348  case frontend::RewriteMacros:          return "-rewrite-macros";
349  case frontend::RewriteObjC:            return "-rewrite-objc";
350  case frontend::RewriteTest:            return "-rewrite-test";
351  case frontend::RunAnalysis:            return "-analyze";
352  case frontend::RunPreprocessorOnly:    return "-Eonly";
353  }
354
355  llvm_unreachable("Unexpected language kind!");
356  return 0;
357}
358
359static void FileSystemOptsToArgs(const FileSystemOptions &Opts,
360                                 std::vector<std::string> &Res) {
361  if (!Opts.WorkingDir.empty()) {
362    Res.push_back("-working-directory");
363    Res.push_back(Opts.WorkingDir);
364  }
365}
366
367static void FrontendOptsToArgs(const FrontendOptions &Opts,
368                               std::vector<std::string> &Res) {
369  if (Opts.DisableFree)
370    Res.push_back("-disable-free");
371  if (Opts.RelocatablePCH)
372    Res.push_back("-relocatable-pch");
373  if (Opts.ChainedPCH)
374    Res.push_back("-chained-pch");
375  if (Opts.ShowHelp)
376    Res.push_back("-help");
377  if (Opts.ShowMacrosInCodeCompletion)
378    Res.push_back("-code-completion-macros");
379  if (Opts.ShowCodePatternsInCodeCompletion)
380    Res.push_back("-code-completion-patterns");
381  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
382    Res.push_back("-no-code-completion-globals");
383  if (Opts.ShowStats)
384    Res.push_back("-print-stats");
385  if (Opts.ShowTimers)
386    Res.push_back("-ftime-report");
387  if (Opts.ShowVersion)
388    Res.push_back("-version");
389  if (Opts.FixWhatYouCan)
390    Res.push_back("-fix-what-you-can");
391
392  bool NeedLang = false;
393  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
394    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
395        Opts.Inputs[i].first)
396      NeedLang = true;
397  if (NeedLang) {
398    Res.push_back("-x");
399    Res.push_back(getInputKindName(Opts.Inputs[0].first));
400  }
401  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
402    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
403           "Unable to represent this input vector!");
404    Res.push_back(Opts.Inputs[i].second);
405  }
406
407  if (!Opts.OutputFile.empty()) {
408    Res.push_back("-o");
409    Res.push_back(Opts.OutputFile);
410  }
411  if (!Opts.ViewClassInheritance.empty()) {
412    Res.push_back("-cxx-inheritance-view");
413    Res.push_back(Opts.ViewClassInheritance);
414  }
415  if (!Opts.CodeCompletionAt.FileName.empty()) {
416    Res.push_back("-code-completion-at");
417    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
418                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
419                  llvm::utostr(Opts.CodeCompletionAt.Column));
420  }
421  if (Opts.ProgramAction != frontend::InheritanceView &&
422      Opts.ProgramAction != frontend::PluginAction)
423    Res.push_back(getActionName(Opts.ProgramAction));
424  if (!Opts.ActionName.empty()) {
425    Res.push_back("-plugin");
426    Res.push_back(Opts.ActionName);
427    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
428      Res.push_back("-plugin-arg-" + Opts.ActionName);
429      Res.push_back(Opts.PluginArgs[i]);
430    }
431  }
432  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
433    Res.push_back("-load");
434    Res.push_back(Opts.Plugins[i]);
435  }
436  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
437    Res.push_back("-ast-merge");
438    Res.push_back(Opts.ASTMergeFiles[i]);
439  }
440  for (unsigned i = 0, e = Opts.Modules.size(); i != e; ++i) {
441    Res.push_back("-import-module");
442    Res.push_back(Opts.Modules[i]);
443  }
444  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
445    Res.push_back("-mllvm");
446    Res.push_back(Opts.LLVMArgs[i]);
447  }
448}
449
450static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
451                                   std::vector<std::string> &Res) {
452  if (Opts.Sysroot != "/") {
453    Res.push_back("-isysroot");
454    Res.push_back(Opts.Sysroot);
455  }
456
457  for (unsigned i = 0, e = Opts.CXXSystemIncludes.size(); i != e; ++i) {
458    Res.push_back("-cxx-system-include");
459    Res.push_back(Opts.CXXSystemIncludes[i]);
460  }
461
462  /// User specified include entries.
463  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
464    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
465    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
466      llvm::report_fatal_error("Invalid option set!");
467    if (E.IsUserSupplied) {
468      if (E.Group == frontend::After) {
469        Res.push_back("-idirafter");
470      } else if (E.Group == frontend::Quoted) {
471        Res.push_back("-iquote");
472      } else if (E.Group == frontend::System) {
473        Res.push_back("-isystem");
474      } else {
475        assert(E.Group == frontend::Angled && "Invalid group!");
476        Res.push_back(E.IsFramework ? "-F" : "-I");
477      }
478    } else {
479      if (E.Group != frontend::Angled && E.Group != frontend::System)
480        llvm::report_fatal_error("Invalid option set!");
481      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
482                    "-iwithprefix");
483    }
484    Res.push_back(E.Path);
485  }
486
487  if (!Opts.EnvIncPath.empty()) {
488    // FIXME: Provide an option for this, and move env detection to driver.
489    llvm::report_fatal_error("Not yet implemented!");
490  }
491  if (!Opts.CEnvIncPath.empty()) {
492    // FIXME: Provide an option for this, and move env detection to driver.
493    llvm::report_fatal_error("Not yet implemented!");
494  }
495  if (!Opts.ObjCEnvIncPath.empty()) {
496    // FIXME: Provide an option for this, and move env detection to driver.
497    llvm::report_fatal_error("Not yet implemented!");
498  }
499  if (!Opts.CXXEnvIncPath.empty()) {
500    // FIXME: Provide an option for this, and move env detection to driver.
501    llvm::report_fatal_error("Not yet implemented!");
502  }
503  if (!Opts.ObjCXXEnvIncPath.empty()) {
504    // FIXME: Provide an option for this, and move env detection to driver.
505    llvm::report_fatal_error("Not yet implemented!");
506  }
507  if (!Opts.ResourceDir.empty()) {
508    Res.push_back("-resource-dir");
509    Res.push_back(Opts.ResourceDir);
510  }
511  if (!Opts.UseStandardIncludes)
512    Res.push_back("-nostdinc");
513  if (!Opts.UseStandardCXXIncludes)
514    Res.push_back("-nostdinc++");
515  if (Opts.Verbose)
516    Res.push_back("-v");
517}
518
519static void LangOptsToArgs(const LangOptions &Opts,
520                           std::vector<std::string> &Res) {
521  LangOptions DefaultLangOpts;
522
523  // FIXME: Need to set -std to get all the implicit options.
524
525  // FIXME: We want to only pass options relative to the defaults, which
526  // requires constructing a target. :(
527  //
528  // It would be better to push the all target specific choices into the driver,
529  // so that everything below that was more uniform.
530
531  if (Opts.Trigraphs)
532    Res.push_back("-trigraphs");
533  // Implicit based on the input kind:
534  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
535  // Implicit based on the input language standard:
536  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
537  if (Opts.DollarIdents)
538    Res.push_back("-fdollars-in-identifiers");
539  if (Opts.GNUMode && !Opts.GNUKeywords)
540    Res.push_back("-fno-gnu-keywords");
541  if (!Opts.GNUMode && Opts.GNUKeywords)
542    Res.push_back("-fgnu-keywords");
543  if (Opts.Microsoft)
544    Res.push_back("-fms-extensions");
545  if (Opts.MSCVersion != 0)
546    Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
547  if (Opts.Borland)
548    Res.push_back("-fborland-extensions");
549  if (Opts.ObjCNonFragileABI)
550    Res.push_back("-fobjc-nonfragile-abi");
551  if (Opts.ObjCNonFragileABI2)
552    Res.push_back("-fobjc-nonfragile-abi2");
553  if (Opts.ObjCDefaultSynthProperties)
554    Res.push_back("-fobjc-default-synthesize-properties");
555  // NoInline is implicit.
556  if (!Opts.CXXOperatorNames)
557    Res.push_back("-fno-operator-names");
558  if (Opts.PascalStrings)
559    Res.push_back("-fpascal-strings");
560  if (Opts.CatchUndefined)
561    Res.push_back("-fcatch-undefined-behavior");
562  if (Opts.WritableStrings)
563    Res.push_back("-fwritable-strings");
564  if (Opts.ConstStrings)
565    Res.push_back("-Wwrite-strings");
566  if (!Opts.LaxVectorConversions)
567    Res.push_back("-fno-lax-vector-conversions");
568  if (Opts.AltiVec)
569    Res.push_back("-faltivec");
570  if (Opts.Exceptions)
571    Res.push_back("-fexceptions");
572  if (Opts.SjLjExceptions)
573    Res.push_back("-fsjlj-exceptions");
574  if (!Opts.RTTI)
575    Res.push_back("-fno-rtti");
576  if (!Opts.NeXTRuntime)
577    Res.push_back("-fgnu-runtime");
578  if (Opts.Freestanding)
579    Res.push_back("-ffreestanding");
580  if (Opts.NoBuiltin)
581    Res.push_back("-fno-builtin");
582  if (!Opts.AssumeSaneOperatorNew)
583    Res.push_back("-fno-assume-sane-operator-new");
584  if (!Opts.ThreadsafeStatics)
585    Res.push_back("-fno-threadsafe-statics");
586  if (Opts.POSIXThreads)
587    Res.push_back("-pthread");
588  if (Opts.Blocks)
589    Res.push_back("-fblocks");
590  if (Opts.EmitAllDecls)
591    Res.push_back("-femit-all-decls");
592  if (Opts.MathErrno)
593    Res.push_back("-fmath-errno");
594  switch (Opts.getSignedOverflowBehavior()) {
595  case LangOptions::SOB_Undefined: break;
596  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
597  case LangOptions::SOB_Trapping:
598    Res.push_back("-ftrapv"); break;
599    if (!Opts.OverflowHandler.empty()) {
600      Res.push_back("-ftrapv-handler");
601      Res.push_back(Opts.OverflowHandler);
602    }
603  }
604  if (Opts.HeinousExtensions)
605    Res.push_back("-fheinous-gnu-extensions");
606  // Optimize is implicit.
607  // OptimizeSize is implicit.
608  if (Opts.Static)
609    Res.push_back("-static-define");
610  if (Opts.DumpRecordLayouts)
611    Res.push_back("-fdump-record-layouts");
612  if (Opts.DumpVTableLayouts)
613    Res.push_back("-fdump-vtable-layouts");
614  if (Opts.NoBitFieldTypeAlign)
615    Res.push_back("-fno-bitfield-type-alignment");
616  if (Opts.SjLjExceptions)
617    Res.push_back("-fsjlj-exceptions");
618  if (Opts.PICLevel) {
619    Res.push_back("-pic-level");
620    Res.push_back(llvm::utostr(Opts.PICLevel));
621  }
622  if (Opts.ObjCGCBitmapPrint)
623    Res.push_back("-print-ivar-layout");
624  if (Opts.NoConstantCFStrings)
625    Res.push_back("-fno-constant-cfstrings");
626  if (!Opts.AccessControl)
627    Res.push_back("-fno-access-control");
628  if (!Opts.CharIsSigned)
629    Res.push_back("-fno-signed-char");
630  if (Opts.ShortWChar)
631    Res.push_back("-fshort-wchar");
632  if (!Opts.ElideConstructors)
633    Res.push_back("-fno-elide-constructors");
634  if (Opts.getGCMode() != LangOptions::NonGC) {
635    if (Opts.getGCMode() == LangOptions::HybridGC) {
636      Res.push_back("-fobjc-gc");
637    } else {
638      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
639      Res.push_back("-fobjc-gc-only");
640    }
641  }
642  if (Opts.getVisibilityMode() != DefaultVisibility) {
643    Res.push_back("-fvisibility");
644    if (Opts.getVisibilityMode() == HiddenVisibility) {
645      Res.push_back("hidden");
646    } else {
647      assert(Opts.getVisibilityMode() == ProtectedVisibility &&
648             "Invalid visibility!");
649      Res.push_back("protected");
650    }
651  }
652  if (Opts.InlineVisibilityHidden)
653    Res.push_back("-fvisibility-inlines-hidden");
654
655  if (Opts.getStackProtectorMode() != 0) {
656    Res.push_back("-stack-protector");
657    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
658  }
659  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
660    Res.push_back("-ftemplate-depth");
661    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
662  }
663  if (!Opts.ObjCConstantStringClass.empty()) {
664    Res.push_back("-fconstant-string-class");
665    Res.push_back(Opts.ObjCConstantStringClass);
666  }
667}
668
669static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
670                                   std::vector<std::string> &Res) {
671  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
672    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
673                  Opts.Macros[i].first);
674  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
675    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
676    Res.push_back("-include");
677    Res.push_back(Opts.Includes[i]);
678  }
679  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
680    Res.push_back("-imacros");
681    Res.push_back(Opts.MacroIncludes[i]);
682  }
683  if (!Opts.UsePredefines)
684    Res.push_back("-undef");
685  if (Opts.DetailedRecord)
686    Res.push_back("-detailed-preprocessing-record");
687  if (!Opts.ImplicitPCHInclude.empty()) {
688    Res.push_back("-include-pch");
689    Res.push_back(Opts.ImplicitPCHInclude);
690  }
691  if (!Opts.ImplicitPTHInclude.empty()) {
692    Res.push_back("-include-pth");
693    Res.push_back(Opts.ImplicitPTHInclude);
694  }
695  if (!Opts.TokenCache.empty()) {
696    if (Opts.ImplicitPTHInclude.empty()) {
697      Res.push_back("-token-cache");
698      Res.push_back(Opts.TokenCache);
699    } else
700      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
701             "Unsupported option combination!");
702  }
703  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
704    Res.push_back("-remap-file");
705    Res.push_back(Opts.RemappedFiles[i].first + ";" +
706                  Opts.RemappedFiles[i].second);
707  }
708}
709
710static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
711                                         std::vector<std::string> &Res) {
712  if (!Opts.ShowCPP && !Opts.ShowMacros)
713    llvm::report_fatal_error("Invalid option combination!");
714
715  if (Opts.ShowCPP && Opts.ShowMacros)
716    Res.push_back("-dD");
717  else if (!Opts.ShowCPP && Opts.ShowMacros)
718    Res.push_back("-dM");
719
720  if (Opts.ShowHeaderIncludes)
721    Res.push_back("-H");
722  if (!Opts.ShowLineMarkers)
723    Res.push_back("-P");
724  if (Opts.ShowComments)
725    Res.push_back("-C");
726  if (Opts.ShowMacroComments)
727    Res.push_back("-CC");
728}
729
730static void TargetOptsToArgs(const TargetOptions &Opts,
731                             std::vector<std::string> &Res) {
732  Res.push_back("-triple");
733  Res.push_back(Opts.Triple);
734  if (!Opts.CPU.empty()) {
735    Res.push_back("-target-cpu");
736    Res.push_back(Opts.CPU);
737  }
738  if (!Opts.ABI.empty()) {
739    Res.push_back("-target-abi");
740    Res.push_back(Opts.ABI);
741  }
742  if (!Opts.LinkerVersion.empty()) {
743    Res.push_back("-target-linker-version");
744    Res.push_back(Opts.LinkerVersion);
745  }
746  if (!Opts.CXXABI.empty()) {
747    Res.push_back("-cxx-abi");
748    Res.push_back(Opts.CXXABI);
749  }
750  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
751    Res.push_back("-target-feature");
752    Res.push_back(Opts.Features[i]);
753  }
754}
755
756void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
757  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
758  CodeGenOptsToArgs(getCodeGenOpts(), Res);
759  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
760  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
761  FileSystemOptsToArgs(getFileSystemOpts(), Res);
762  FrontendOptsToArgs(getFrontendOpts(), Res);
763  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
764  LangOptsToArgs(getLangOpts(), Res);
765  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
766  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
767  TargetOptsToArgs(getTargetOpts(), Res);
768}
769
770//===----------------------------------------------------------------------===//
771// Deserialization (to args)
772//===----------------------------------------------------------------------===//
773
774using namespace clang::driver;
775using namespace clang::driver::cc1options;
776
777//
778
779static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
780                                     Diagnostic &Diags) {
781  unsigned DefaultOpt = 0;
782  if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
783    DefaultOpt = 2;
784  // -Os implies -O2
785  return Args.hasArg(OPT_Os) ? 2 :
786    Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
787}
788
789static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
790                              Diagnostic &Diags) {
791  using namespace cc1options;
792
793  Opts.AnalysisList.clear();
794#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
795  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
796#include "clang/Frontend/Analyses.def"
797
798  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
799    llvm::StringRef Name = A->getValue(Args);
800    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
801#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
802      .Case(CMDFLAG, NAME##Model)
803#include "clang/Frontend/Analyses.def"
804      .Default(NumStores);
805    // FIXME: Error handling.
806    if (Value == NumStores)
807      Diags.Report(diag::err_drv_invalid_value)
808        << A->getAsString(Args) << Name;
809    else
810      Opts.AnalysisStoreOpt = Value;
811  }
812
813  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
814    llvm::StringRef Name = A->getValue(Args);
815    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
816#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
817      .Case(CMDFLAG, NAME##Model)
818#include "clang/Frontend/Analyses.def"
819      .Default(NumConstraints);
820    // FIXME: Error handling.
821    if (Value == NumConstraints)
822      Diags.Report(diag::err_drv_invalid_value)
823        << A->getAsString(Args) << Name;
824    else
825      Opts.AnalysisConstraintsOpt = Value;
826  }
827
828  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
829    llvm::StringRef Name = A->getValue(Args);
830    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
831#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
832      .Case(CMDFLAG, PD_##NAME)
833#include "clang/Frontend/Analyses.def"
834      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
835    // FIXME: Error handling.
836    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
837      Diags.Report(diag::err_drv_invalid_value)
838        << A->getAsString(Args) << Name;
839    else
840      Opts.AnalysisDiagOpt = Value;
841  }
842
843  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
844  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
845  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
846  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
847  Opts.AnalyzeNestedBlocks =
848    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
849  Opts.AnalyzerStats = Args.hasArg(OPT_analysis_AnalyzerStats);
850  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
851  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
852  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
853  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
854  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
855  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
856  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
857  Opts.EnableExperimentalInternalChecks =
858    Args.hasArg(OPT_analyzer_experimental_internal_checks);
859  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
860  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
861  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
862  Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
863  Opts.IdempotentOps = Args.hasArg(OPT_analysis_WarnIdempotentOps);
864  Opts.BufferOverflows = Args.hasArg(OPT_analysis_WarnBufferOverflows);
865}
866
867static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
868                             Diagnostic &Diags) {
869  using namespace cc1options;
870
871  Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
872  if (Opts.OptimizationLevel > 3) {
873    Diags.Report(diag::err_drv_invalid_value)
874      << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
875    Opts.OptimizationLevel = 3;
876  }
877
878  // We must always run at least the always inlining pass.
879  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
880    : CodeGenOptions::OnlyAlwaysInlining;
881
882  Opts.DebugInfo = Args.hasArg(OPT_g);
883  Opts.LimitDebugInfo = Args.hasArg(OPT_flimit_debug_info);
884  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
885  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
886  Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
887  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
888  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
889  Opts.NoCommon = Args.hasArg(OPT_fno_common);
890  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
891  Opts.OptimizeSize = Args.hasArg(OPT_Os);
892  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
893                            Args.hasArg(OPT_ffreestanding));
894  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
895                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
896
897  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
898  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
899  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
900  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
901  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
902  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
903  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
904  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
905  Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
906  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
907  Opts.NoInfsFPMath = Opts.NoNaNsFPMath = Args.hasArg(OPT_cl_finite_math_only)||
908                                          Args.hasArg(OPT_cl_fast_relaxed_math);
909  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
910  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
911  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
912  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
913  Opts.UnsafeFPMath = Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
914                      Args.hasArg(OPT_cl_fast_relaxed_math);
915  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
916  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
917
918  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
919  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
920
921  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
922  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
923
924  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
925
926  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
927    llvm::StringRef Name = A->getValue(Args);
928    unsigned Method = llvm::StringSwitch<unsigned>(Name)
929      .Case("legacy", CodeGenOptions::Legacy)
930      .Case("non-legacy", CodeGenOptions::NonLegacy)
931      .Case("mixed", CodeGenOptions::Mixed)
932      .Default(~0U);
933    if (Method == ~0U)
934      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
935    else
936      Opts.ObjCDispatchMethod = Method;
937  }
938}
939
940static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
941                                      ArgList &Args) {
942  using namespace cc1options;
943  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
944  Opts.Targets = Args.getAllArgValues(OPT_MT);
945  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
946  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
947}
948
949static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
950                                Diagnostic &Diags) {
951  using namespace cc1options;
952  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
953  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
954  Opts.Pedantic = Args.hasArg(OPT_pedantic);
955  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
956  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
957  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
958  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
959  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
960  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
961  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
962
963  llvm::StringRef ShowOverloads =
964    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
965  if (ShowOverloads == "best")
966    Opts.ShowOverloads = Diagnostic::Ovl_Best;
967  else if (ShowOverloads == "all")
968    Opts.ShowOverloads = Diagnostic::Ovl_All;
969  else
970    Diags.Report(diag::err_drv_invalid_value)
971      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
972      << ShowOverloads;
973
974  llvm::StringRef ShowCategory =
975    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
976  if (ShowCategory == "none")
977    Opts.ShowCategories = 0;
978  else if (ShowCategory == "id")
979    Opts.ShowCategories = 1;
980  else if (ShowCategory == "name")
981    Opts.ShowCategories = 2;
982  else
983    Diags.Report(diag::err_drv_invalid_value)
984      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
985      << ShowCategory;
986
987  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
988  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
989  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
990  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
991  Opts.MacroBacktraceLimit
992    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
993                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
994  Opts.TemplateBacktraceLimit
995    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
996                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
997                         Diags);
998  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
999                                    DiagnosticOptions::DefaultTabStop, Diags);
1000  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1001    Diags.Report(diag::warn_ignoring_ftabstop_value)
1002      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1003    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1004  }
1005  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
1006  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
1007  Opts.Warnings = Args.getAllArgValues(OPT_W);
1008}
1009
1010static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1011  Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1012}
1013
1014static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1015                                   Diagnostic &Diags) {
1016  using namespace cc1options;
1017  Opts.ProgramAction = frontend::ParseSyntaxOnly;
1018  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1019    switch (A->getOption().getID()) {
1020    default:
1021      assert(0 && "Invalid option in group!");
1022    case OPT_ast_dump:
1023      Opts.ProgramAction = frontend::ASTDump; break;
1024    case OPT_ast_dump_xml:
1025      Opts.ProgramAction = frontend::ASTDumpXML; break;
1026    case OPT_ast_print:
1027      Opts.ProgramAction = frontend::ASTPrint; break;
1028    case OPT_ast_print_xml:
1029      Opts.ProgramAction = frontend::ASTPrintXML; break;
1030    case OPT_ast_view:
1031      Opts.ProgramAction = frontend::ASTView; break;
1032    case OPT_boostcon:
1033      Opts.ProgramAction = frontend::BoostCon; break;
1034    case OPT_dump_raw_tokens:
1035      Opts.ProgramAction = frontend::DumpRawTokens; break;
1036    case OPT_dump_tokens:
1037      Opts.ProgramAction = frontend::DumpTokens; break;
1038    case OPT_S:
1039      Opts.ProgramAction = frontend::EmitAssembly; break;
1040    case OPT_emit_llvm_bc:
1041      Opts.ProgramAction = frontend::EmitBC; break;
1042    case OPT_emit_html:
1043      Opts.ProgramAction = frontend::EmitHTML; break;
1044    case OPT_emit_llvm:
1045      Opts.ProgramAction = frontend::EmitLLVM; break;
1046    case OPT_emit_llvm_only:
1047      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1048    case OPT_emit_codegen_only:
1049      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1050    case OPT_emit_obj:
1051      Opts.ProgramAction = frontend::EmitObj; break;
1052    case OPT_fixit_EQ:
1053      Opts.FixItSuffix = A->getValue(Args);
1054      // fall-through!
1055    case OPT_fixit:
1056      Opts.ProgramAction = frontend::FixIt; break;
1057    case OPT_emit_pch:
1058      Opts.ProgramAction = frontend::GeneratePCH; break;
1059    case OPT_emit_pth:
1060      Opts.ProgramAction = frontend::GeneratePTH; break;
1061    case OPT_init_only:
1062      Opts.ProgramAction = frontend::InitOnly; break;
1063    case OPT_fsyntax_only:
1064      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1065    case OPT_print_decl_contexts:
1066      Opts.ProgramAction = frontend::PrintDeclContext; break;
1067    case OPT_print_preamble:
1068      Opts.ProgramAction = frontend::PrintPreamble; break;
1069    case OPT_E:
1070      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1071    case OPT_rewrite_macros:
1072      Opts.ProgramAction = frontend::RewriteMacros; break;
1073    case OPT_rewrite_objc:
1074      Opts.ProgramAction = frontend::RewriteObjC; break;
1075    case OPT_rewrite_test:
1076      Opts.ProgramAction = frontend::RewriteTest; break;
1077    case OPT_analyze:
1078      Opts.ProgramAction = frontend::RunAnalysis; break;
1079    case OPT_Eonly:
1080      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1081    case OPT_create_module:
1082      Opts.ProgramAction = frontend::CreateModule; break;
1083    }
1084  }
1085
1086  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1087    Opts.Plugins.push_back(A->getValue(Args,0));
1088    Opts.ProgramAction = frontend::PluginAction;
1089    Opts.ActionName = A->getValue(Args);
1090
1091    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1092           end = Args.filtered_end(); it != end; ++it) {
1093      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1094        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1095    }
1096  }
1097
1098  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1099    Opts.CodeCompletionAt =
1100      ParsedSourceLocation::FromString(A->getValue(Args));
1101    if (Opts.CodeCompletionAt.FileName.empty())
1102      Diags.Report(diag::err_drv_invalid_value)
1103        << A->getAsString(Args) << A->getValue(Args);
1104  }
1105  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1106
1107  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1108  Opts.Plugins = Args.getAllArgValues(OPT_load);
1109  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1110  Opts.ChainedPCH = Args.hasArg(OPT_chained_pch);
1111  Opts.ShowHelp = Args.hasArg(OPT_help);
1112  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1113  Opts.ShowCodePatternsInCodeCompletion
1114    = Args.hasArg(OPT_code_completion_patterns);
1115  Opts.ShowGlobalSymbolsInCodeCompletion
1116    = !Args.hasArg(OPT_no_code_completion_globals);
1117  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1118  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1119  Opts.ShowVersion = Args.hasArg(OPT_version);
1120  Opts.ViewClassInheritance = Args.getLastArgValue(OPT_cxx_inheritance_view);
1121  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1122  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1123  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1124  Opts.Modules = Args.getAllArgValues(OPT_import_module);
1125
1126  InputKind DashX = IK_None;
1127  if (const Arg *A = Args.getLastArg(OPT_x)) {
1128    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1129      .Case("c", IK_C)
1130      .Case("cl", IK_OpenCL)
1131      .Case("c", IK_C)
1132      .Case("cl", IK_OpenCL)
1133      .Case("cuda", IK_CUDA)
1134      .Case("c++", IK_CXX)
1135      .Case("objective-c", IK_ObjC)
1136      .Case("objective-c++", IK_ObjCXX)
1137      .Case("cpp-output", IK_PreprocessedC)
1138      .Case("assembler-with-cpp", IK_Asm)
1139      .Case("c++-cpp-output", IK_PreprocessedCXX)
1140      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1141      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1142      .Case("c-header", IK_C)
1143      .Case("objective-c-header", IK_ObjC)
1144      .Case("c++-header", IK_CXX)
1145      .Case("objective-c++-header", IK_ObjCXX)
1146      .Case("ast", IK_AST)
1147      .Case("ir", IK_LLVM_IR)
1148      .Default(IK_None);
1149    if (DashX == IK_None)
1150      Diags.Report(diag::err_drv_invalid_value)
1151        << A->getAsString(Args) << A->getValue(Args);
1152  }
1153
1154  // '-' is the default input if none is given.
1155  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1156  Opts.Inputs.clear();
1157  if (Inputs.empty())
1158    Inputs.push_back("-");
1159  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1160    InputKind IK = DashX;
1161    if (IK == IK_None) {
1162      IK = FrontendOptions::getInputKindForExtension(
1163        llvm::StringRef(Inputs[i]).rsplit('.').second);
1164      // FIXME: Remove this hack.
1165      if (i == 0)
1166        DashX = IK;
1167    }
1168    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1169  }
1170
1171  return DashX;
1172}
1173
1174std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1175                                                 void *MainAddr) {
1176  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1177
1178  if (!P.isEmpty()) {
1179    P.eraseComponent();  // Remove /clang from foo/bin/clang
1180    P.eraseComponent();  // Remove /bin   from foo/bin
1181
1182    // Get foo/lib/clang/<version>/include
1183    P.appendComponent("lib");
1184    P.appendComponent("clang");
1185    P.appendComponent(CLANG_VERSION_STRING);
1186  }
1187
1188  return P.str();
1189}
1190
1191static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1192  using namespace cc1options;
1193  Opts.CXXSystemIncludes = Args.getAllArgValues(OPT_cxx_system_include);
1194  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1195  Opts.Verbose = Args.hasArg(OPT_v);
1196  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1197  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1198  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1199  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1200
1201  // Add -I... and -F... options in order.
1202  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1203         ie = Args.filtered_end(); it != ie; ++it)
1204    Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1205                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1206
1207  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1208  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1209  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1210                                             OPT_iwithprefixbefore),
1211         ie = Args.filtered_end(); it != ie; ++it) {
1212    const Arg *A = *it;
1213    if (A->getOption().matches(OPT_iprefix))
1214      Prefix = A->getValue(Args);
1215    else if (A->getOption().matches(OPT_iwithprefix))
1216      Opts.AddPath(Prefix.str() + A->getValue(Args),
1217                   frontend::System, false, false, true);
1218    else
1219      Opts.AddPath(Prefix.str() + A->getValue(Args),
1220                   frontend::Angled, false, false, true);
1221  }
1222
1223  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1224         ie = Args.filtered_end(); it != ie; ++it)
1225    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, true);
1226  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1227         ie = Args.filtered_end(); it != ie; ++it)
1228    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, true);
1229  for (arg_iterator it = Args.filtered_begin(OPT_isystem, OPT_iwithsysroot),
1230         ie = Args.filtered_end(); it != ie; ++it)
1231    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1232                 (*it)->getOption().matches(OPT_iwithsysroot));
1233
1234  // FIXME: Need options for the various environment variables!
1235}
1236
1237void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1238                                         LangStandard::Kind LangStd) {
1239  // Set some properties which depend soley on the input kind; it would be nice
1240  // to move these to the language standard, and have the driver resolve the
1241  // input kind + language standard.
1242  if (IK == IK_Asm) {
1243    Opts.AsmPreprocessor = 1;
1244  } else if (IK == IK_ObjC ||
1245             IK == IK_ObjCXX ||
1246             IK == IK_PreprocessedObjC ||
1247             IK == IK_PreprocessedObjCXX) {
1248    Opts.ObjC1 = Opts.ObjC2 = 1;
1249  }
1250
1251  if (LangStd == LangStandard::lang_unspecified) {
1252    // Based on the base language, pick one.
1253    switch (IK) {
1254    case IK_None:
1255    case IK_AST:
1256    case IK_LLVM_IR:
1257      assert(0 && "Invalid input kind!");
1258    case IK_OpenCL:
1259      LangStd = LangStandard::lang_opencl;
1260      break;
1261    case IK_CUDA:
1262      LangStd = LangStandard::lang_cuda;
1263      break;
1264    case IK_Asm:
1265    case IK_C:
1266    case IK_PreprocessedC:
1267    case IK_ObjC:
1268    case IK_PreprocessedObjC:
1269      LangStd = LangStandard::lang_gnu99;
1270      break;
1271    case IK_CXX:
1272    case IK_PreprocessedCXX:
1273    case IK_ObjCXX:
1274    case IK_PreprocessedObjCXX:
1275      LangStd = LangStandard::lang_gnucxx98;
1276      break;
1277    }
1278  }
1279
1280  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1281  Opts.BCPLComment = Std.hasBCPLComments();
1282  Opts.C99 = Std.isC99();
1283  Opts.CPlusPlus = Std.isCPlusPlus();
1284  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1285  Opts.Digraphs = Std.hasDigraphs();
1286  Opts.GNUMode = Std.isGNUMode();
1287  Opts.GNUInline = !Std.isC99();
1288  Opts.HexFloats = Std.hasHexFloats();
1289  Opts.ImplicitInt = Std.hasImplicitInt();
1290
1291  // OpenCL has some additional defaults.
1292  if (LangStd == LangStandard::lang_opencl) {
1293    Opts.OpenCL = 1;
1294    Opts.AltiVec = 1;
1295    Opts.CXXOperatorNames = 1;
1296    Opts.LaxVectorConversions = 1;
1297  }
1298
1299  if (LangStd == LangStandard::lang_cuda)
1300    Opts.CUDA = 1;
1301
1302  // OpenCL and C++ both have bool, true, false keywords.
1303  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1304
1305  Opts.GNUKeywords = Opts.GNUMode;
1306  Opts.CXXOperatorNames = Opts.CPlusPlus;
1307
1308  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1309  // is specified, or -std is set to a conforming mode.
1310  Opts.Trigraphs = !Opts.GNUMode;
1311
1312  Opts.DollarIdents = !Opts.AsmPreprocessor;
1313}
1314
1315static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1316                          Diagnostic &Diags) {
1317  // FIXME: Cleanup per-file based stuff.
1318  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1319  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1320    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1321#define LANGSTANDARD(id, name, desc, features) \
1322      .Case(name, LangStandard::lang_##id)
1323#include "clang/Frontend/LangStandards.def"
1324      .Default(LangStandard::lang_unspecified);
1325    if (LangStd == LangStandard::lang_unspecified)
1326      Diags.Report(diag::err_drv_invalid_value)
1327        << A->getAsString(Args) << A->getValue(Args);
1328  }
1329
1330  if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1331    if (strcmp(A->getValue(Args), "CL1.1") != 0) {
1332      Diags.Report(diag::err_drv_invalid_value)
1333        << A->getAsString(Args) << A->getValue(Args);
1334    }
1335  }
1336
1337  CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1338
1339  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1340  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1341  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1342  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1343  // name, as it doesn't seem a useful distinction.
1344  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1345                                  Opts.GNUKeywords);
1346
1347  if (Args.hasArg(OPT_fno_operator_names))
1348    Opts.CXXOperatorNames = 0;
1349
1350  if (Args.hasArg(OPT_fobjc_gc_only))
1351    Opts.setGCMode(LangOptions::GCOnly);
1352  else if (Args.hasArg(OPT_fobjc_gc))
1353    Opts.setGCMode(LangOptions::HybridGC);
1354
1355  if (Args.hasArg(OPT_print_ivar_layout))
1356    Opts.ObjCGCBitmapPrint = 1;
1357  if (Args.hasArg(OPT_fno_constant_cfstrings))
1358    Opts.NoConstantCFStrings = 1;
1359
1360  if (Args.hasArg(OPT_faltivec))
1361    Opts.AltiVec = 1;
1362
1363  if (Args.hasArg(OPT_pthread))
1364    Opts.POSIXThreads = 1;
1365
1366  llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1367  if (Vis == "default")
1368    Opts.setVisibilityMode(DefaultVisibility);
1369  else if (Vis == "hidden")
1370    Opts.setVisibilityMode(HiddenVisibility);
1371  else if (Vis == "protected")
1372    Opts.setVisibilityMode(ProtectedVisibility);
1373  else
1374    Diags.Report(diag::err_drv_invalid_value)
1375      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1376
1377  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1378    Opts.InlineVisibilityHidden = 1;
1379
1380  if (Args.hasArg(OPT_ftrapv)) {
1381    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1382    // Set the handler, if one is specified.
1383    Opts.OverflowHandler =
1384        Args.getLastArgValue(OPT_ftrapv_handler);
1385  }
1386  else if (Args.hasArg(OPT_fwrapv))
1387    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1388
1389  if (Args.hasArg(OPT_trigraphs))
1390    Opts.Trigraphs = 1;
1391
1392  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1393                                   OPT_fno_dollars_in_identifiers,
1394                                   Opts.DollarIdents);
1395  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1396  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1397  Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1398  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1399  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1400  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1401  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1402    Opts.LaxVectorConversions = 0;
1403  if (Args.hasArg(OPT_fno_threadsafe_statics))
1404    Opts.ThreadsafeStatics = 0;
1405  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1406  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1407  Opts.Blocks = Args.hasArg(OPT_fblocks);
1408  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1409  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1410  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1411  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1412  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1413  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1414  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1415  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1416  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1417  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1418  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1419                                               Diags);
1420  Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy,
1421                                                    0, Diags);
1422  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1423  Opts.ObjCConstantStringClass =
1424    Args.getLastArgValue(OPT_fconstant_string_class);
1425  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1426  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1427  if (Opts.ObjCNonFragileABI2)
1428    Opts.ObjCNonFragileABI = true;
1429  Opts.ObjCDefaultSynthProperties =
1430    Args.hasArg(OPT_fobjc_default_synthesize_properties);
1431  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1432  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1433  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1434  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1435  Opts.Static = Args.hasArg(OPT_static_define);
1436  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1437  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1438  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1439  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1440  Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1441  Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1442  Opts.OptimizeSize = 0;
1443
1444  // FIXME: Eliminate this dependency.
1445  unsigned Opt = getOptimizationLevel(Args, IK, Diags);
1446  Opts.Optimize = Opt != 0;
1447
1448  // This is the __NO_INLINE__ define, which just depends on things like the
1449  // optimization level and -fno-inline, not actually whether the backend has
1450  // inlining enabled.
1451  //
1452  // FIXME: This is affected by other options (-fno-inline).
1453  Opts.NoInline = !Opt;
1454
1455  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1456  switch (SSP) {
1457  default:
1458    Diags.Report(diag::err_drv_invalid_value)
1459      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1460    break;
1461  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1462  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1463  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1464  }
1465}
1466
1467static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1468                                  FileManager &FileMgr,
1469                                  Diagnostic &Diags) {
1470  using namespace cc1options;
1471  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1472  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1473  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1474      Opts.TokenCache = A->getValue(Args);
1475  else
1476    Opts.TokenCache = Opts.ImplicitPTHInclude;
1477  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1478  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1479  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1480
1481  Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1482  for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1483         ie = Args.filtered_end(); it != ie; ++it) {
1484    const Arg *A = *it;
1485    Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
1486  }
1487
1488  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1489    llvm::StringRef Value(A->getValue(Args));
1490    size_t Comma = Value.find(',');
1491    unsigned Bytes = 0;
1492    unsigned EndOfLine = 0;
1493
1494    if (Comma == llvm::StringRef::npos ||
1495        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1496        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1497      Diags.Report(diag::err_drv_preamble_format);
1498    else {
1499      Opts.PrecompiledPreambleBytes.first = Bytes;
1500      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1501    }
1502  }
1503
1504  // Add macros from the command line.
1505  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1506         ie = Args.filtered_end(); it != ie; ++it) {
1507    if ((*it)->getOption().matches(OPT_D))
1508      Opts.addMacroDef((*it)->getValue(Args));
1509    else
1510      Opts.addMacroUndef((*it)->getValue(Args));
1511  }
1512
1513  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1514
1515  // Add the ordered list of -includes.
1516  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1517                                             OPT_include_pth),
1518         ie = Args.filtered_end(); it != ie; ++it) {
1519    const Arg *A = *it;
1520    // PCH is handled specially, we need to extra the original include path.
1521    if (A->getOption().matches(OPT_include_pch)) {
1522      std::string OriginalFile =
1523        ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
1524      if (OriginalFile.empty())
1525        continue;
1526
1527      Opts.Includes.push_back(OriginalFile);
1528    } else
1529      Opts.Includes.push_back(A->getValue(Args));
1530  }
1531
1532  // Include 'altivec.h' if -faltivec option present
1533  if (Args.hasArg(OPT_faltivec))
1534    Opts.Includes.push_back("altivec.h");
1535
1536  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1537         ie = Args.filtered_end(); it != ie; ++it) {
1538    const Arg *A = *it;
1539    std::pair<llvm::StringRef,llvm::StringRef> Split =
1540      llvm::StringRef(A->getValue(Args)).split(';');
1541
1542    if (Split.second.empty()) {
1543      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1544      continue;
1545    }
1546
1547    Opts.addRemappedFile(Split.first, Split.second);
1548  }
1549}
1550
1551static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1552                                        ArgList &Args) {
1553  using namespace cc1options;
1554  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1555  Opts.ShowComments = Args.hasArg(OPT_C);
1556  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1557  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1558  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1559  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1560}
1561
1562static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1563  using namespace cc1options;
1564  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1565  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1566  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1567  Opts.Features = Args.getAllArgValues(OPT_target_feature);
1568  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1569  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1570
1571  // Use the host triple if unspecified.
1572  if (Opts.Triple.empty())
1573    Opts.Triple = llvm::sys::getHostTriple();
1574}
1575
1576//
1577
1578void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1579                                        const char *const *ArgBegin,
1580                                        const char *const *ArgEnd,
1581                                        Diagnostic &Diags) {
1582  // Parse the arguments.
1583  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1584  unsigned MissingArgIndex, MissingArgCount;
1585  llvm::OwningPtr<InputArgList> Args(
1586    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1587
1588  // Check for missing argument error.
1589  if (MissingArgCount)
1590    Diags.Report(diag::err_drv_missing_argument)
1591      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1592
1593  // Issue errors on unknown arguments.
1594  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1595         ie = Args->filtered_end(); it != ie; ++it)
1596    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1597
1598  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1599  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1600  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1601  ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1602  // FIXME: We shouldn't have to pass the DashX option around here
1603  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1604  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags);
1605  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1606  if (DashX != IK_AST && DashX != IK_LLVM_IR)
1607    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1608  // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1609  // PCH file and find the original header name. Remove the need to do that in
1610  // ParsePreprocessorArgs and remove the FileManager
1611  // parameters from the function and the "FileManager.h" #include.
1612  FileManager FileMgr(Res.getFileSystemOpts());
1613  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1614  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1615  ParseTargetArgs(Res.getTargetOpts(), *Args);
1616}
1617