CompilerInvocation.cpp revision f35142413974e9dfe2c5f202084db4bd1c2073e9 
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/System/Host.h"
30#include "llvm/System/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}
122
123static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
124                              std::vector<std::string> &Res) {
125  if (Opts.DebugInfo)
126    Res.push_back("-g");
127  if (Opts.DisableLLVMOpts)
128    Res.push_back("-disable-llvm-optzns");
129  if (Opts.DisableRedZone)
130    Res.push_back("-disable-red-zone");
131  if (!Opts.DwarfDebugFlags.empty()) {
132    Res.push_back("-dwarf-debug-flags");
133    Res.push_back(Opts.DwarfDebugFlags);
134  }
135  if (!Opts.MergeAllConstants)
136    Res.push_back("-fno-merge-all-constants");
137  if (Opts.NoCommon)
138    Res.push_back("-fno-common");
139  if (Opts.NoImplicitFloat)
140    Res.push_back("-no-implicit-float");
141  if (Opts.OmitLeafFramePointer)
142    Res.push_back("-momit-leaf-frame-pointer");
143  if (Opts.OptimizeSize) {
144    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
145    Res.push_back("-Os");
146  } else if (Opts.OptimizationLevel != 0)
147    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
148  if (!Opts.MainFileName.empty()) {
149    Res.push_back("-main-file-name");
150    Res.push_back(Opts.MainFileName);
151  }
152  // SimplifyLibCalls is only derived.
153  // TimePasses is only derived.
154  // UnitAtATime is unused.
155  // Inlining is only derived.
156
157  // UnrollLoops is derived, but also accepts an option, no
158  // harm in pushing it back here.
159  if (Opts.UnrollLoops)
160    Res.push_back("-funroll-loops");
161  if (Opts.DataSections)
162    Res.push_back("-fdata-sections");
163  if (Opts.FunctionSections)
164    Res.push_back("-ffunction-sections");
165  if (Opts.AsmVerbose)
166    Res.push_back("-masm-verbose");
167  if (!Opts.CodeModel.empty()) {
168    Res.push_back("-mcode-model");
169    Res.push_back(Opts.CodeModel);
170  }
171  if (!Opts.CXAAtExit)
172    Res.push_back("-fno-use-cxa-atexit");
173  if (Opts.CXXCtorDtorAliases)
174    Res.push_back("-mconstructor-aliases");
175  if (!Opts.DebugPass.empty()) {
176    Res.push_back("-mdebug-pass");
177    Res.push_back(Opts.DebugPass);
178  }
179  if (Opts.DisableFPElim)
180    Res.push_back("-mdisable-fp-elim");
181  if (!Opts.FloatABI.empty()) {
182    Res.push_back("-mfloat-abi");
183    Res.push_back(Opts.FloatABI);
184  }
185  if (!Opts.LimitFloatPrecision.empty()) {
186    Res.push_back("-mlimit-float-precision");
187    Res.push_back(Opts.LimitFloatPrecision);
188  }
189  if (Opts.NoZeroInitializedInBSS)
190    Res.push_back("-mno-zero-initialized-bss");
191  switch (Opts.getObjCDispatchMethod()) {
192  case CodeGenOptions::Legacy:
193    break;
194  case CodeGenOptions::Mixed:
195    Res.push_back("-fobjc-dispatch-method=mixed");
196    break;
197  case CodeGenOptions::NonLegacy:
198    Res.push_back("-fobjc-dispatch-method=non-legacy");
199    break;
200  }
201  if (Opts.RelaxAll)
202    Res.push_back("-mrelax-all");
203  if (Opts.SoftFloat)
204    Res.push_back("-msoft-float");
205  if (Opts.UnwindTables)
206    Res.push_back("-munwind-tables");
207  if (Opts.RelocationModel != "pic") {
208    Res.push_back("-mrelocation-model");
209    Res.push_back(Opts.RelocationModel);
210  }
211  if (!Opts.VerifyModule)
212    Res.push_back("-disable-llvm-verifier");
213}
214
215static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
216                                       std::vector<std::string> &Res) {
217  if (Opts.IncludeSystemHeaders)
218    Res.push_back("-sys-header-deps");
219  if (Opts.UsePhonyTargets)
220    Res.push_back("-MP");
221  if (!Opts.OutputFile.empty()) {
222    Res.push_back("-dependency-file");
223    Res.push_back(Opts.OutputFile);
224  }
225  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
226    Res.push_back("-MT");
227    Res.push_back(Opts.Targets[i]);
228  }
229}
230
231static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
232                                 std::vector<std::string> &Res) {
233  if (Opts.IgnoreWarnings)
234    Res.push_back("-w");
235  if (Opts.NoRewriteMacros)
236    Res.push_back("-Wno-rewrite-macros");
237  if (Opts.Pedantic)
238    Res.push_back("-pedantic");
239  if (Opts.PedanticErrors)
240    Res.push_back("-pedantic-errors");
241  if (!Opts.ShowColumn)
242    Res.push_back("-fno-show-column");
243  if (!Opts.ShowLocation)
244    Res.push_back("-fno-show-source-location");
245  if (!Opts.ShowCarets)
246    Res.push_back("-fno-caret-diagnostics");
247  if (!Opts.ShowFixits)
248    Res.push_back("-fno-diagnostics-fixit-info");
249  if (Opts.ShowSourceRanges)
250    Res.push_back("-fdiagnostics-print-source-range-info");
251  if (Opts.ShowParseableFixits)
252    Res.push_back("-fdiagnostics-parseable-fixits");
253  if (Opts.ShowColors)
254    Res.push_back("-fcolor-diagnostics");
255  if (Opts.VerifyDiagnostics)
256    Res.push_back("-verify");
257  if (Opts.ShowOptionNames)
258    Res.push_back("-fdiagnostics-show-option");
259  if (Opts.ShowCategories == 1)
260    Res.push_back("-fdiagnostics-show-category=id");
261  else if (Opts.ShowCategories == 2)
262    Res.push_back("-fdiagnostics-show-category=name");
263  if (Opts.ErrorLimit) {
264    Res.push_back("-ferror-limit");
265    Res.push_back(llvm::utostr(Opts.ErrorLimit));
266  }
267  if (Opts.MacroBacktraceLimit
268                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
269    Res.push_back("-fmacro-backtrace-limit");
270    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
271  }
272  if (Opts.TemplateBacktraceLimit
273                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
274    Res.push_back("-ftemplate-backtrace-limit");
275    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
276  }
277
278  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
279    Res.push_back("-ftabstop");
280    Res.push_back(llvm::utostr(Opts.TabStop));
281  }
282  if (Opts.MessageLength) {
283    Res.push_back("-fmessage-length");
284    Res.push_back(llvm::utostr(Opts.MessageLength));
285  }
286  if (!Opts.DumpBuildInformation.empty()) {
287    Res.push_back("-dump-build-information");
288    Res.push_back(Opts.DumpBuildInformation);
289  }
290  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
291    Res.push_back("-W" + Opts.Warnings[i]);
292}
293
294static const char *getInputKindName(InputKind Kind) {
295  switch (Kind) {
296  case IK_None:              break;
297  case IK_AST:               return "ast";
298  case IK_Asm:               return "assembler-with-cpp";
299  case IK_C:                 return "c";
300  case IK_CXX:               return "c++";
301  case IK_LLVM_IR:           return "ir";
302  case IK_ObjC:              return "objective-c";
303  case IK_ObjCXX:            return "objective-c++";
304  case IK_OpenCL:            return "cl";
305  case IK_PreprocessedC:     return "cpp-output";
306  case IK_PreprocessedCXX:   return "c++-cpp-output";
307  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
308  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
309  }
310
311  llvm_unreachable("Unexpected language kind!");
312  return 0;
313}
314
315static const char *getActionName(frontend::ActionKind Kind) {
316  switch (Kind) {
317  case frontend::PluginAction:
318  case frontend::InheritanceView:
319    llvm_unreachable("Invalid kind!");
320
321  case frontend::ASTDump:                return "-ast-dump";
322  case frontend::ASTDumpXML:             return "-ast-dump-xml";
323  case frontend::ASTPrint:               return "-ast-print";
324  case frontend::ASTPrintXML:            return "-ast-print-xml";
325  case frontend::ASTView:                return "-ast-view";
326  case frontend::BoostCon:               return "-boostcon";
327  case frontend::CreateModule:           return "-create-module";
328  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
329  case frontend::DumpTokens:             return "-dump-tokens";
330  case frontend::EmitAssembly:           return "-S";
331  case frontend::EmitBC:                 return "-emit-llvm-bc";
332  case frontend::EmitHTML:               return "-emit-html";
333  case frontend::EmitLLVM:               return "-emit-llvm";
334  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
335  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
336  case frontend::EmitObj:                return "-emit-obj";
337  case frontend::FixIt:                  return "-fixit";
338  case frontend::GeneratePCH:            return "-emit-pch";
339  case frontend::GeneratePTH:            return "-emit-pth";
340  case frontend::InitOnly:               return "-init-only";
341  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
342  case frontend::PrintDeclContext:       return "-print-decl-contexts";
343  case frontend::PrintPreamble:          return "-print-preamble";
344  case frontend::PrintPreprocessedInput: return "-E";
345  case frontend::RewriteMacros:          return "-rewrite-macros";
346  case frontend::RewriteObjC:            return "-rewrite-objc";
347  case frontend::RewriteTest:            return "-rewrite-test";
348  case frontend::RunAnalysis:            return "-analyze";
349  case frontend::RunPreprocessorOnly:    return "-Eonly";
350  }
351
352  llvm_unreachable("Unexpected language kind!");
353  return 0;
354}
355
356static void FileSystemOptsToArgs(const FileSystemOptions &Opts,
357                                 std::vector<std::string> &Res) {
358  if (!Opts.WorkingDir.empty()) {
359    Res.push_back("-working-directory");
360    Res.push_back(Opts.WorkingDir);
361  }
362}
363
364static void FrontendOptsToArgs(const FrontendOptions &Opts,
365                               std::vector<std::string> &Res) {
366  if (Opts.DisableFree)
367    Res.push_back("-disable-free");
368  if (Opts.RelocatablePCH)
369    Res.push_back("-relocatable-pch");
370  if (Opts.ChainedPCH)
371    Res.push_back("-chained-pch");
372  if (Opts.ShowHelp)
373    Res.push_back("-help");
374  if (Opts.ShowMacrosInCodeCompletion)
375    Res.push_back("-code-completion-macros");
376  if (Opts.ShowCodePatternsInCodeCompletion)
377    Res.push_back("-code-completion-patterns");
378  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
379    Res.push_back("-no-code-completion-globals");
380  if (Opts.ShowStats)
381    Res.push_back("-print-stats");
382  if (Opts.ShowTimers)
383    Res.push_back("-ftime-report");
384  if (Opts.ShowVersion)
385    Res.push_back("-version");
386  if (Opts.FixWhatYouCan)
387    Res.push_back("-fix-what-you-can");
388
389  bool NeedLang = false;
390  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
391    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
392        Opts.Inputs[i].first)
393      NeedLang = true;
394  if (NeedLang) {
395    Res.push_back("-x");
396    Res.push_back(getInputKindName(Opts.Inputs[0].first));
397  }
398  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
399    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
400           "Unable to represent this input vector!");
401    Res.push_back(Opts.Inputs[i].second);
402  }
403
404  if (!Opts.OutputFile.empty()) {
405    Res.push_back("-o");
406    Res.push_back(Opts.OutputFile);
407  }
408  if (!Opts.ViewClassInheritance.empty()) {
409    Res.push_back("-cxx-inheritance-view");
410    Res.push_back(Opts.ViewClassInheritance);
411  }
412  if (!Opts.CodeCompletionAt.FileName.empty()) {
413    Res.push_back("-code-completion-at");
414    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
415                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
416                  llvm::utostr(Opts.CodeCompletionAt.Column));
417  }
418  if (Opts.ProgramAction != frontend::InheritanceView &&
419      Opts.ProgramAction != frontend::PluginAction)
420    Res.push_back(getActionName(Opts.ProgramAction));
421  if (!Opts.ActionName.empty()) {
422    Res.push_back("-plugin");
423    Res.push_back(Opts.ActionName);
424    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
425      Res.push_back("-plugin-arg-" + Opts.ActionName);
426      Res.push_back(Opts.PluginArgs[i]);
427    }
428  }
429  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
430    Res.push_back("-load");
431    Res.push_back(Opts.Plugins[i]);
432  }
433  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
434    Res.push_back("-ast-merge");
435    Res.push_back(Opts.ASTMergeFiles[i]);
436  }
437  for (unsigned i = 0, e = Opts.Modules.size(); i != e; ++i) {
438    Res.push_back("-import-module");
439    Res.push_back(Opts.Modules[i]);
440  }
441  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
442    Res.push_back("-mllvm");
443    Res.push_back(Opts.LLVMArgs[i]);
444  }
445}
446
447static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
448                                   std::vector<std::string> &Res) {
449  if (Opts.Sysroot != "/") {
450    Res.push_back("-isysroot");
451    Res.push_back(Opts.Sysroot);
452  }
453
454  for (unsigned i = 0, e = Opts.CXXSystemIncludes.size(); i != e; ++i) {
455    Res.push_back("-cxx-system-include");
456    Res.push_back(Opts.CXXSystemIncludes[i]);
457  }
458
459  /// User specified include entries.
460  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
461    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
462    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
463      llvm::report_fatal_error("Invalid option set!");
464    if (E.IsUserSupplied) {
465      if (E.Group == frontend::After) {
466        Res.push_back("-idirafter");
467      } else if (E.Group == frontend::Quoted) {
468        Res.push_back("-iquote");
469      } else if (E.Group == frontend::System) {
470        Res.push_back("-isystem");
471      } else {
472        assert(E.Group == frontend::Angled && "Invalid group!");
473        Res.push_back(E.IsFramework ? "-F" : "-I");
474      }
475    } else {
476      if (E.Group != frontend::Angled && E.Group != frontend::System)
477        llvm::report_fatal_error("Invalid option set!");
478      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
479                    "-iwithprefix");
480    }
481    Res.push_back(E.Path);
482  }
483
484  if (!Opts.EnvIncPath.empty()) {
485    // FIXME: Provide an option for this, and move env detection to driver.
486    llvm::report_fatal_error("Not yet implemented!");
487  }
488  if (!Opts.CEnvIncPath.empty()) {
489    // FIXME: Provide an option for this, and move env detection to driver.
490    llvm::report_fatal_error("Not yet implemented!");
491  }
492  if (!Opts.ObjCEnvIncPath.empty()) {
493    // FIXME: Provide an option for this, and move env detection to driver.
494    llvm::report_fatal_error("Not yet implemented!");
495  }
496  if (!Opts.CXXEnvIncPath.empty()) {
497    // FIXME: Provide an option for this, and move env detection to driver.
498    llvm::report_fatal_error("Not yet implemented!");
499  }
500  if (!Opts.ObjCXXEnvIncPath.empty()) {
501    // FIXME: Provide an option for this, and move env detection to driver.
502    llvm::report_fatal_error("Not yet implemented!");
503  }
504  if (!Opts.ResourceDir.empty()) {
505    Res.push_back("-resource-dir");
506    Res.push_back(Opts.ResourceDir);
507  }
508  if (!Opts.UseStandardIncludes)
509    Res.push_back("-nostdinc");
510  if (!Opts.UseStandardCXXIncludes)
511    Res.push_back("-nostdinc++");
512  if (Opts.Verbose)
513    Res.push_back("-v");
514}
515
516static void LangOptsToArgs(const LangOptions &Opts,
517                           std::vector<std::string> &Res) {
518  LangOptions DefaultLangOpts;
519
520  // FIXME: Need to set -std to get all the implicit options.
521
522  // FIXME: We want to only pass options relative to the defaults, which
523  // requires constructing a target. :(
524  //
525  // It would be better to push the all target specific choices into the driver,
526  // so that everything below that was more uniform.
527
528  if (Opts.Trigraphs)
529    Res.push_back("-trigraphs");
530  // Implicit based on the input kind:
531  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
532  // Implicit based on the input language standard:
533  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
534  if (Opts.DollarIdents)
535    Res.push_back("-fdollars-in-identifiers");
536  if (Opts.GNUMode && !Opts.GNUKeywords)
537    Res.push_back("-fno-gnu-keywords");
538  if (!Opts.GNUMode && Opts.GNUKeywords)
539    Res.push_back("-fgnu-keywords");
540  if (Opts.Microsoft)
541    Res.push_back("-fms-extensions");
542  if (Opts.MSCVersion != 0)
543    Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
544  if (Opts.Borland)
545    Res.push_back("-fborland-extensions");
546  if (Opts.ObjCNonFragileABI)
547    Res.push_back("-fobjc-nonfragile-abi");
548  if (Opts.ObjCNonFragileABI2)
549    Res.push_back("-fobjc-nonfragile-abi2");
550  // NoInline is implicit.
551  if (!Opts.CXXOperatorNames)
552    Res.push_back("-fno-operator-names");
553  if (Opts.PascalStrings)
554    Res.push_back("-fpascal-strings");
555  if (Opts.CatchUndefined)
556    Res.push_back("-fcatch-undefined-behavior");
557  if (Opts.WritableStrings)
558    Res.push_back("-fwritable-strings");
559  if (Opts.ConstStrings)
560    Res.push_back("-Wwrite-strings");
561  if (!Opts.LaxVectorConversions)
562    Res.push_back("-fno-lax-vector-conversions");
563  if (Opts.AltiVec)
564    Res.push_back("-faltivec");
565  if (Opts.Exceptions)
566    Res.push_back("-fexceptions");
567  if (Opts.SjLjExceptions)
568    Res.push_back("-fsjlj-exceptions");
569  if (!Opts.RTTI)
570    Res.push_back("-fno-rtti");
571  if (!Opts.NeXTRuntime)
572    Res.push_back("-fgnu-runtime");
573  if (Opts.Freestanding)
574    Res.push_back("-ffreestanding");
575  if (Opts.NoBuiltin)
576    Res.push_back("-fno-builtin");
577  if (!Opts.AssumeSaneOperatorNew)
578    Res.push_back("-fno-assume-sane-operator-new");
579  if (!Opts.ThreadsafeStatics)
580    Res.push_back("-fno-threadsafe-statics");
581  if (Opts.POSIXThreads)
582    Res.push_back("-pthread");
583  if (Opts.Blocks)
584    Res.push_back("-fblocks");
585  if (Opts.EmitAllDecls)
586    Res.push_back("-femit-all-decls");
587  if (Opts.MathErrno)
588    Res.push_back("-fmath-errno");
589  switch (Opts.getSignedOverflowBehavior()) {
590  case LangOptions::SOB_Undefined: break;
591  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
592  case LangOptions::SOB_Trapping:
593    Res.push_back("-ftrapv"); break;
594    if (!Opts.OverflowHandler.empty()) {
595      Res.push_back("-ftrapv-handler");
596      Res.push_back(Opts.OverflowHandler);
597    }
598  }
599  if (Opts.HeinousExtensions)
600    Res.push_back("-fheinous-gnu-extensions");
601  // Optimize is implicit.
602  // OptimizeSize is implicit.
603  if (Opts.Static)
604    Res.push_back("-static-define");
605  if (Opts.DumpRecordLayouts)
606    Res.push_back("-fdump-record-layouts");
607  if (Opts.DumpVTableLayouts)
608    Res.push_back("-fdump-vtable-layouts");
609  if (Opts.NoBitFieldTypeAlign)
610    Res.push_back("-fno-bitfield-type-alignment");
611  if (Opts.SjLjExceptions)
612    Res.push_back("-fsjlj-exceptions");
613  if (Opts.PICLevel) {
614    Res.push_back("-pic-level");
615    Res.push_back(llvm::utostr(Opts.PICLevel));
616  }
617  if (Opts.ObjCGCBitmapPrint)
618    Res.push_back("-print-ivar-layout");
619  if (Opts.NoConstantCFStrings)
620    Res.push_back("-fno-constant-cfstrings");
621  if (!Opts.AccessControl)
622    Res.push_back("-fno-access-control");
623  if (!Opts.CharIsSigned)
624    Res.push_back("-fno-signed-char");
625  if (Opts.ShortWChar)
626    Res.push_back("-fshort-wchar");
627  if (!Opts.ElideConstructors)
628    Res.push_back("-fno-elide-constructors");
629  if (Opts.getGCMode() != LangOptions::NonGC) {
630    if (Opts.getGCMode() == LangOptions::HybridGC) {
631      Res.push_back("-fobjc-gc");
632    } else {
633      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
634      Res.push_back("-fobjc-gc-only");
635    }
636  }
637  if (Opts.getVisibilityMode() != DefaultVisibility) {
638    Res.push_back("-fvisibility");
639    if (Opts.getVisibilityMode() == HiddenVisibility) {
640      Res.push_back("hidden");
641    } else {
642      assert(Opts.getVisibilityMode() == ProtectedVisibility &&
643             "Invalid visibility!");
644      Res.push_back("protected");
645    }
646  }
647  if (Opts.InlineVisibilityHidden)
648    Res.push_back("-fvisibility-inlines-hidden");
649
650  if (Opts.getStackProtectorMode() != 0) {
651    Res.push_back("-stack-protector");
652    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
653  }
654  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
655    Res.push_back("-ftemplate-depth");
656    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
657  }
658  if (!Opts.ObjCConstantStringClass.empty()) {
659    Res.push_back("-fconstant-string-class");
660    Res.push_back(Opts.ObjCConstantStringClass);
661  }
662}
663
664static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
665                                   std::vector<std::string> &Res) {
666  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
667    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
668                  Opts.Macros[i].first);
669  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
670    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
671    Res.push_back("-include");
672    Res.push_back(Opts.Includes[i]);
673  }
674  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
675    Res.push_back("-imacros");
676    Res.push_back(Opts.MacroIncludes[i]);
677  }
678  if (!Opts.UsePredefines)
679    Res.push_back("-undef");
680  if (Opts.DetailedRecord)
681    Res.push_back("-detailed-preprocessing-record");
682  if (!Opts.ImplicitPCHInclude.empty()) {
683    Res.push_back("-include-pch");
684    Res.push_back(Opts.ImplicitPCHInclude);
685  }
686  if (!Opts.ImplicitPTHInclude.empty()) {
687    Res.push_back("-include-pth");
688    Res.push_back(Opts.ImplicitPTHInclude);
689  }
690  if (!Opts.TokenCache.empty()) {
691    if (Opts.ImplicitPTHInclude.empty()) {
692      Res.push_back("-token-cache");
693      Res.push_back(Opts.TokenCache);
694    } else
695      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
696             "Unsupported option combination!");
697  }
698  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
699    Res.push_back("-remap-file");
700    Res.push_back(Opts.RemappedFiles[i].first + ";" +
701                  Opts.RemappedFiles[i].second);
702  }
703}
704
705static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
706                                         std::vector<std::string> &Res) {
707  if (!Opts.ShowCPP && !Opts.ShowMacros)
708    llvm::report_fatal_error("Invalid option combination!");
709
710  if (Opts.ShowCPP && Opts.ShowMacros)
711    Res.push_back("-dD");
712  else if (!Opts.ShowCPP && Opts.ShowMacros)
713    Res.push_back("-dM");
714
715  if (Opts.ShowHeaderIncludes)
716    Res.push_back("-H");
717  if (!Opts.ShowLineMarkers)
718    Res.push_back("-P");
719  if (Opts.ShowComments)
720    Res.push_back("-C");
721  if (Opts.ShowMacroComments)
722    Res.push_back("-CC");
723}
724
725static void TargetOptsToArgs(const TargetOptions &Opts,
726                             std::vector<std::string> &Res) {
727  Res.push_back("-triple");
728  Res.push_back(Opts.Triple);
729  if (!Opts.CPU.empty()) {
730    Res.push_back("-target-cpu");
731    Res.push_back(Opts.CPU);
732  }
733  if (!Opts.ABI.empty()) {
734    Res.push_back("-target-abi");
735    Res.push_back(Opts.ABI);
736  }
737  if (!Opts.LinkerVersion.empty()) {
738    Res.push_back("-target-linker-version");
739    Res.push_back(Opts.LinkerVersion);
740  }
741  if (!Opts.CXXABI.empty()) {
742    Res.push_back("-cxx-abi");
743    Res.push_back(Opts.CXXABI);
744  }
745  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
746    Res.push_back("-target-feature");
747    Res.push_back(Opts.Features[i]);
748  }
749}
750
751void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
752  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
753  CodeGenOptsToArgs(getCodeGenOpts(), Res);
754  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
755  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
756  FileSystemOptsToArgs(getFileSystemOpts(), Res);
757  FrontendOptsToArgs(getFrontendOpts(), Res);
758  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
759  LangOptsToArgs(getLangOpts(), Res);
760  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
761  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
762  TargetOptsToArgs(getTargetOpts(), Res);
763}
764
765//===----------------------------------------------------------------------===//
766// Deserialization (to args)
767//===----------------------------------------------------------------------===//
768
769using namespace clang::driver;
770using namespace clang::driver::cc1options;
771
772//
773
774static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
775                              Diagnostic &Diags) {
776  using namespace cc1options;
777
778  Opts.AnalysisList.clear();
779#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
780  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
781#include "clang/Frontend/Analyses.def"
782
783  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
784    llvm::StringRef Name = A->getValue(Args);
785    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
786#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
787      .Case(CMDFLAG, NAME##Model)
788#include "clang/Frontend/Analyses.def"
789      .Default(NumStores);
790    // FIXME: Error handling.
791    if (Value == NumStores)
792      Diags.Report(diag::err_drv_invalid_value)
793        << A->getAsString(Args) << Name;
794    else
795      Opts.AnalysisStoreOpt = Value;
796  }
797
798  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
799    llvm::StringRef Name = A->getValue(Args);
800    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
801#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
802      .Case(CMDFLAG, NAME##Model)
803#include "clang/Frontend/Analyses.def"
804      .Default(NumConstraints);
805    // FIXME: Error handling.
806    if (Value == NumConstraints)
807      Diags.Report(diag::err_drv_invalid_value)
808        << A->getAsString(Args) << Name;
809    else
810      Opts.AnalysisConstraintsOpt = Value;
811  }
812
813  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
814    llvm::StringRef Name = A->getValue(Args);
815    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
816#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
817      .Case(CMDFLAG, PD_##NAME)
818#include "clang/Frontend/Analyses.def"
819      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
820    // FIXME: Error handling.
821    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
822      Diags.Report(diag::err_drv_invalid_value)
823        << A->getAsString(Args) << Name;
824    else
825      Opts.AnalysisDiagOpt = Value;
826  }
827
828  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
829  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
830  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
831  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
832  Opts.AnalyzeNestedBlocks =
833    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
834  Opts.AnalyzerStats = Args.hasArg(OPT_analysis_AnalyzerStats);
835  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
836  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
837  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
838  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
839  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
840  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
841  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
842  Opts.EnableExperimentalInternalChecks =
843    Args.hasArg(OPT_analyzer_experimental_internal_checks);
844  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
845  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
846  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
847  Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
848  Opts.IdempotentOps = Args.hasArg(OPT_analysis_WarnIdempotentOps);
849}
850
851static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
852                             Diagnostic &Diags) {
853  using namespace cc1options;
854  // -Os implies -O2
855  if (Args.hasArg(OPT_Os))
856    Opts.OptimizationLevel = 2;
857  else {
858    Opts.OptimizationLevel = Args.getLastArgIntValue(OPT_O, 0, Diags);
859    if (Opts.OptimizationLevel > 3) {
860      Diags.Report(diag::err_drv_invalid_value)
861        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
862      Opts.OptimizationLevel = 3;
863    }
864  }
865
866  // We must always run at least the always inlining pass.
867  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
868    : CodeGenOptions::OnlyAlwaysInlining;
869
870  Opts.DebugInfo = Args.hasArg(OPT_g);
871  Opts.LimitDebugInfo = Args.hasArg(OPT_flimit_debug_info);
872  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
873  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
874  Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
875  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
876  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
877  Opts.NoCommon = Args.hasArg(OPT_fno_common);
878  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
879  Opts.OptimizeSize = Args.hasArg(OPT_Os);
880  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
881                            Args.hasArg(OPT_ffreestanding));
882  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
883                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
884
885  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
886  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
887  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
888  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
889  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
890  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
891  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
892  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
893  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
894  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
895  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
896  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
897  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
898  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
899  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
900
901  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
902  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
903
904  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
905  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
906
907  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
908
909  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
910    llvm::StringRef Name = A->getValue(Args);
911    unsigned Method = llvm::StringSwitch<unsigned>(Name)
912      .Case("legacy", CodeGenOptions::Legacy)
913      .Case("non-legacy", CodeGenOptions::NonLegacy)
914      .Case("mixed", CodeGenOptions::Mixed)
915      .Default(~0U);
916    if (Method == ~0U)
917      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
918    else
919      Opts.ObjCDispatchMethod = Method;
920  }
921}
922
923static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
924                                      ArgList &Args) {
925  using namespace cc1options;
926  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
927  Opts.Targets = Args.getAllArgValues(OPT_MT);
928  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
929  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
930}
931
932static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
933                                Diagnostic &Diags) {
934  using namespace cc1options;
935  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
936  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
937  Opts.Pedantic = Args.hasArg(OPT_pedantic);
938  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
939  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
940  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
941  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
942  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
943  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
944  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
945
946  llvm::StringRef ShowOverloads =
947    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
948  if (ShowOverloads == "best")
949    Opts.ShowOverloads = Diagnostic::Ovl_Best;
950  else if (ShowOverloads == "all")
951    Opts.ShowOverloads = Diagnostic::Ovl_All;
952  else
953    Diags.Report(diag::err_drv_invalid_value)
954      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
955      << ShowOverloads;
956
957  llvm::StringRef ShowCategory =
958    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
959  if (ShowCategory == "none")
960    Opts.ShowCategories = 0;
961  else if (ShowCategory == "id")
962    Opts.ShowCategories = 1;
963  else if (ShowCategory == "name")
964    Opts.ShowCategories = 2;
965  else
966    Diags.Report(diag::err_drv_invalid_value)
967      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
968      << ShowCategory;
969
970  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
971  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
972  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
973  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
974  Opts.MacroBacktraceLimit
975    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
976                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
977  Opts.TemplateBacktraceLimit
978    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
979                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
980                         Diags);
981  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
982                                    DiagnosticOptions::DefaultTabStop, Diags);
983  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
984    Diags.Report(diag::warn_ignoring_ftabstop_value)
985      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
986    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
987  }
988  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
989  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
990  Opts.Warnings = Args.getAllArgValues(OPT_W);
991}
992
993static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
994  Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
995}
996
997static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
998                                   Diagnostic &Diags) {
999  using namespace cc1options;
1000  Opts.ProgramAction = frontend::ParseSyntaxOnly;
1001  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1002    switch (A->getOption().getID()) {
1003    default:
1004      assert(0 && "Invalid option in group!");
1005    case OPT_ast_dump:
1006      Opts.ProgramAction = frontend::ASTDump; break;
1007    case OPT_ast_dump_xml:
1008      Opts.ProgramAction = frontend::ASTDumpXML; break;
1009    case OPT_ast_print:
1010      Opts.ProgramAction = frontend::ASTPrint; break;
1011    case OPT_ast_print_xml:
1012      Opts.ProgramAction = frontend::ASTPrintXML; break;
1013    case OPT_ast_view:
1014      Opts.ProgramAction = frontend::ASTView; break;
1015    case OPT_boostcon:
1016      Opts.ProgramAction = frontend::BoostCon; break;
1017    case OPT_dump_raw_tokens:
1018      Opts.ProgramAction = frontend::DumpRawTokens; break;
1019    case OPT_dump_tokens:
1020      Opts.ProgramAction = frontend::DumpTokens; break;
1021    case OPT_S:
1022      Opts.ProgramAction = frontend::EmitAssembly; break;
1023    case OPT_emit_llvm_bc:
1024      Opts.ProgramAction = frontend::EmitBC; break;
1025    case OPT_emit_html:
1026      Opts.ProgramAction = frontend::EmitHTML; break;
1027    case OPT_emit_llvm:
1028      Opts.ProgramAction = frontend::EmitLLVM; break;
1029    case OPT_emit_llvm_only:
1030      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1031    case OPT_emit_codegen_only:
1032      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1033    case OPT_emit_obj:
1034      Opts.ProgramAction = frontend::EmitObj; break;
1035    case OPT_fixit_EQ:
1036      Opts.FixItSuffix = A->getValue(Args);
1037      // fall-through!
1038    case OPT_fixit:
1039      Opts.ProgramAction = frontend::FixIt; break;
1040    case OPT_emit_pch:
1041      Opts.ProgramAction = frontend::GeneratePCH; break;
1042    case OPT_emit_pth:
1043      Opts.ProgramAction = frontend::GeneratePTH; break;
1044    case OPT_init_only:
1045      Opts.ProgramAction = frontend::InitOnly; break;
1046    case OPT_fsyntax_only:
1047      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1048    case OPT_print_decl_contexts:
1049      Opts.ProgramAction = frontend::PrintDeclContext; break;
1050    case OPT_print_preamble:
1051      Opts.ProgramAction = frontend::PrintPreamble; break;
1052    case OPT_E:
1053      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1054    case OPT_rewrite_macros:
1055      Opts.ProgramAction = frontend::RewriteMacros; break;
1056    case OPT_rewrite_objc:
1057      Opts.ProgramAction = frontend::RewriteObjC; break;
1058    case OPT_rewrite_test:
1059      Opts.ProgramAction = frontend::RewriteTest; break;
1060    case OPT_analyze:
1061      Opts.ProgramAction = frontend::RunAnalysis; break;
1062    case OPT_Eonly:
1063      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1064    case OPT_create_module:
1065      Opts.ProgramAction = frontend::CreateModule; break;
1066    }
1067  }
1068
1069  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1070    Opts.Plugins.push_back(A->getValue(Args,0));
1071    Opts.ProgramAction = frontend::PluginAction;
1072    Opts.ActionName = A->getValue(Args);
1073
1074    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1075           end = Args.filtered_end(); it != end; ++it) {
1076      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1077        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1078    }
1079  }
1080
1081  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1082    Opts.CodeCompletionAt =
1083      ParsedSourceLocation::FromString(A->getValue(Args));
1084    if (Opts.CodeCompletionAt.FileName.empty())
1085      Diags.Report(diag::err_drv_invalid_value)
1086        << A->getAsString(Args) << A->getValue(Args);
1087  }
1088  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1089
1090  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1091  Opts.Plugins = Args.getAllArgValues(OPT_load);
1092  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1093  Opts.ChainedPCH = Args.hasArg(OPT_chained_pch);
1094  Opts.ShowHelp = Args.hasArg(OPT_help);
1095  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1096  Opts.ShowCodePatternsInCodeCompletion
1097    = Args.hasArg(OPT_code_completion_patterns);
1098  Opts.ShowGlobalSymbolsInCodeCompletion
1099    = !Args.hasArg(OPT_no_code_completion_globals);
1100  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1101  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1102  Opts.ShowVersion = Args.hasArg(OPT_version);
1103  Opts.ViewClassInheritance = Args.getLastArgValue(OPT_cxx_inheritance_view);
1104  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1105  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1106  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1107  Opts.Modules = Args.getAllArgValues(OPT_import_module);
1108
1109  InputKind DashX = IK_None;
1110  if (const Arg *A = Args.getLastArg(OPT_x)) {
1111    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1112      .Case("c", IK_C)
1113      .Case("cl", IK_OpenCL)
1114      .Case("c", IK_C)
1115      .Case("cl", IK_OpenCL)
1116      .Case("c++", IK_CXX)
1117      .Case("objective-c", IK_ObjC)
1118      .Case("objective-c++", IK_ObjCXX)
1119      .Case("cpp-output", IK_PreprocessedC)
1120      .Case("assembler-with-cpp", IK_Asm)
1121      .Case("c++-cpp-output", IK_PreprocessedCXX)
1122      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1123      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1124      .Case("c-header", IK_C)
1125      .Case("objective-c-header", IK_ObjC)
1126      .Case("c++-header", IK_CXX)
1127      .Case("objective-c++-header", IK_ObjCXX)
1128      .Case("ast", IK_AST)
1129      .Case("ir", IK_LLVM_IR)
1130      .Default(IK_None);
1131    if (DashX == IK_None)
1132      Diags.Report(diag::err_drv_invalid_value)
1133        << A->getAsString(Args) << A->getValue(Args);
1134  }
1135
1136  // '-' is the default input if none is given.
1137  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1138  Opts.Inputs.clear();
1139  if (Inputs.empty())
1140    Inputs.push_back("-");
1141  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1142    InputKind IK = DashX;
1143    if (IK == IK_None) {
1144      IK = FrontendOptions::getInputKindForExtension(
1145        llvm::StringRef(Inputs[i]).rsplit('.').second);
1146      // FIXME: Remove this hack.
1147      if (i == 0)
1148        DashX = IK;
1149    }
1150    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1151  }
1152
1153  return DashX;
1154}
1155
1156std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1157                                                 void *MainAddr) {
1158  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1159
1160  if (!P.isEmpty()) {
1161    P.eraseComponent();  // Remove /clang from foo/bin/clang
1162    P.eraseComponent();  // Remove /bin   from foo/bin
1163
1164    // Get foo/lib/clang/<version>/include
1165    P.appendComponent("lib");
1166    P.appendComponent("clang");
1167    P.appendComponent(CLANG_VERSION_STRING);
1168  }
1169
1170  return P.str();
1171}
1172
1173static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1174  using namespace cc1options;
1175  Opts.CXXSystemIncludes = Args.getAllArgValues(OPT_cxx_system_include);
1176  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1177  Opts.Verbose = Args.hasArg(OPT_v);
1178  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1179  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1180  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1181  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1182
1183  // Add -I... and -F... options in order.
1184  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1185         ie = Args.filtered_end(); it != ie; ++it)
1186    Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1187                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1188
1189  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1190  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1191  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1192                                             OPT_iwithprefixbefore),
1193         ie = Args.filtered_end(); it != ie; ++it) {
1194    const Arg *A = *it;
1195    if (A->getOption().matches(OPT_iprefix))
1196      Prefix = A->getValue(Args);
1197    else if (A->getOption().matches(OPT_iwithprefix))
1198      Opts.AddPath(Prefix.str() + A->getValue(Args),
1199                   frontend::System, false, false, true);
1200    else
1201      Opts.AddPath(Prefix.str() + A->getValue(Args),
1202                   frontend::Angled, false, false, true);
1203  }
1204
1205  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1206         ie = Args.filtered_end(); it != ie; ++it)
1207    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, true);
1208  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1209         ie = Args.filtered_end(); it != ie; ++it)
1210    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, true);
1211  for (arg_iterator it = Args.filtered_begin(OPT_isystem, OPT_iwithsysroot),
1212         ie = Args.filtered_end(); it != ie; ++it)
1213    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1214                 (*it)->getOption().matches(OPT_iwithsysroot));
1215
1216  // FIXME: Need options for the various environment variables!
1217}
1218
1219static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1220                          Diagnostic &Diags) {
1221  // FIXME: Cleanup per-file based stuff.
1222
1223  // Set some properties which depend soley on the input kind; it would be nice
1224  // to move these to the language standard, and have the driver resolve the
1225  // input kind + language standard.
1226  if (IK == IK_Asm) {
1227    Opts.AsmPreprocessor = 1;
1228  } else if (IK == IK_ObjC ||
1229             IK == IK_ObjCXX ||
1230             IK == IK_PreprocessedObjC ||
1231             IK == IK_PreprocessedObjCXX) {
1232    Opts.ObjC1 = Opts.ObjC2 = 1;
1233  }
1234
1235  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1236  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1237    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1238#define LANGSTANDARD(id, name, desc, features) \
1239      .Case(name, LangStandard::lang_##id)
1240#include "clang/Frontend/LangStandards.def"
1241      .Default(LangStandard::lang_unspecified);
1242    if (LangStd == LangStandard::lang_unspecified)
1243      Diags.Report(diag::err_drv_invalid_value)
1244        << A->getAsString(Args) << A->getValue(Args);
1245  }
1246
1247  if (LangStd == LangStandard::lang_unspecified) {
1248    // Based on the base language, pick one.
1249    switch (IK) {
1250    case IK_None:
1251    case IK_AST:
1252    case IK_LLVM_IR:
1253      assert(0 && "Invalid input kind!");
1254    case IK_OpenCL:
1255      LangStd = LangStandard::lang_opencl;
1256      break;
1257    case IK_Asm:
1258    case IK_C:
1259    case IK_PreprocessedC:
1260    case IK_ObjC:
1261    case IK_PreprocessedObjC:
1262      LangStd = LangStandard::lang_gnu99;
1263      break;
1264    case IK_CXX:
1265    case IK_PreprocessedCXX:
1266    case IK_ObjCXX:
1267    case IK_PreprocessedObjCXX:
1268      LangStd = LangStandard::lang_gnucxx98;
1269      break;
1270    }
1271  }
1272
1273  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1274  Opts.BCPLComment = Std.hasBCPLComments();
1275  Opts.C99 = Std.isC99();
1276  Opts.CPlusPlus = Std.isCPlusPlus();
1277  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1278  Opts.Digraphs = Std.hasDigraphs();
1279  Opts.GNUMode = Std.isGNUMode();
1280  Opts.GNUInline = !Std.isC99();
1281  Opts.HexFloats = Std.hasHexFloats();
1282  Opts.ImplicitInt = Std.hasImplicitInt();
1283
1284  // OpenCL has some additional defaults.
1285  if (LangStd == LangStandard::lang_opencl) {
1286    Opts.OpenCL = 1;
1287    Opts.AltiVec = 1;
1288    Opts.CXXOperatorNames = 1;
1289    Opts.LaxVectorConversions = 1;
1290  }
1291
1292  // OpenCL and C++ both have bool, true, false keywords.
1293  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1294
1295  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1296  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1297  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1298  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1299  // name, as it doesn't seem a useful distinction.
1300  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1301                                  Opts.GNUMode);
1302
1303  if (Opts.CPlusPlus)
1304    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1305
1306  if (Args.hasArg(OPT_fobjc_gc_only))
1307    Opts.setGCMode(LangOptions::GCOnly);
1308  else if (Args.hasArg(OPT_fobjc_gc))
1309    Opts.setGCMode(LangOptions::HybridGC);
1310
1311  if (Args.hasArg(OPT_print_ivar_layout))
1312    Opts.ObjCGCBitmapPrint = 1;
1313  if (Args.hasArg(OPT_fno_constant_cfstrings))
1314    Opts.NoConstantCFStrings = 1;
1315
1316  if (Args.hasArg(OPT_faltivec))
1317    Opts.AltiVec = 1;
1318
1319  if (Args.hasArg(OPT_pthread))
1320    Opts.POSIXThreads = 1;
1321
1322  llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1323  if (Vis == "default")
1324    Opts.setVisibilityMode(DefaultVisibility);
1325  else if (Vis == "hidden")
1326    Opts.setVisibilityMode(HiddenVisibility);
1327  else if (Vis == "protected")
1328    Opts.setVisibilityMode(ProtectedVisibility);
1329  else
1330    Diags.Report(diag::err_drv_invalid_value)
1331      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1332
1333  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1334    Opts.InlineVisibilityHidden = 1;
1335
1336  if (Args.hasArg(OPT_ftrapv)) {
1337    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1338    // Set the handler, if one is specified.
1339    Opts.OverflowHandler =
1340        Args.getLastArgValue(OPT_ftrapv_handler);
1341  }
1342  else if (Args.hasArg(OPT_fwrapv))
1343    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1344
1345  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1346  // is specified, or -std is set to a conforming mode.
1347  Opts.Trigraphs = !Opts.GNUMode;
1348  if (Args.hasArg(OPT_trigraphs))
1349    Opts.Trigraphs = 1;
1350
1351  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1352                                   OPT_fno_dollars_in_identifiers,
1353                                   !Opts.AsmPreprocessor);
1354  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1355  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1356  Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1357  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1358  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1359  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1360  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1361    Opts.LaxVectorConversions = 0;
1362  if (Args.hasArg(OPT_fno_threadsafe_statics))
1363    Opts.ThreadsafeStatics = 0;
1364  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1365  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1366  Opts.Blocks = Args.hasArg(OPT_fblocks);
1367  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1368  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1369  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1370  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1371  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1372  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1373  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1374  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1375  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1376  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1377  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1378                                               Diags);
1379  Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy,
1380                                                    0, Diags);
1381  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1382  Opts.ObjCConstantStringClass =
1383    Args.getLastArgValue(OPT_fconstant_string_class);
1384  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1385  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1386  if (Opts.ObjCNonFragileABI2)
1387    Opts.ObjCNonFragileABI = true;
1388  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1389  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1390  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1391  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1392  Opts.Static = Args.hasArg(OPT_static_define);
1393  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1394  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1395  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1396  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1397  Opts.OptimizeSize = 0;
1398
1399  // FIXME: Eliminate this dependency.
1400  unsigned Opt =
1401    Args.hasArg(OPT_Os) ? 2 : Args.getLastArgIntValue(OPT_O, 0, Diags);
1402  Opts.Optimize = Opt != 0;
1403
1404  // This is the __NO_INLINE__ define, which just depends on things like the
1405  // optimization level and -fno-inline, not actually whether the backend has
1406  // inlining enabled.
1407  //
1408  // FIXME: This is affected by other options (-fno-inline).
1409  Opts.NoInline = !Opt;
1410
1411  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1412  switch (SSP) {
1413  default:
1414    Diags.Report(diag::err_drv_invalid_value)
1415      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1416    break;
1417  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1418  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1419  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1420  }
1421}
1422
1423static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1424                                  FileManager &FileMgr,
1425                                  Diagnostic &Diags) {
1426  using namespace cc1options;
1427  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1428  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1429  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1430      Opts.TokenCache = A->getValue(Args);
1431  else
1432    Opts.TokenCache = Opts.ImplicitPTHInclude;
1433  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1434  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1435  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1436
1437  Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1438  for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1439         ie = Args.filtered_end(); it != ie; ++it) {
1440    const Arg *A = *it;
1441    Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
1442  }
1443
1444  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1445    llvm::StringRef Value(A->getValue(Args));
1446    size_t Comma = Value.find(',');
1447    unsigned Bytes = 0;
1448    unsigned EndOfLine = 0;
1449
1450    if (Comma == llvm::StringRef::npos ||
1451        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1452        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1453      Diags.Report(diag::err_drv_preamble_format);
1454    else {
1455      Opts.PrecompiledPreambleBytes.first = Bytes;
1456      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1457    }
1458  }
1459
1460  // Add macros from the command line.
1461  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1462         ie = Args.filtered_end(); it != ie; ++it) {
1463    if ((*it)->getOption().matches(OPT_D))
1464      Opts.addMacroDef((*it)->getValue(Args));
1465    else
1466      Opts.addMacroUndef((*it)->getValue(Args));
1467  }
1468
1469  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1470
1471  // Add the ordered list of -includes.
1472  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1473                                             OPT_include_pth),
1474         ie = Args.filtered_end(); it != ie; ++it) {
1475    const Arg *A = *it;
1476    // PCH is handled specially, we need to extra the original include path.
1477    if (A->getOption().matches(OPT_include_pch)) {
1478      std::string OriginalFile =
1479        ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
1480      if (OriginalFile.empty())
1481        continue;
1482
1483      Opts.Includes.push_back(OriginalFile);
1484    } else
1485      Opts.Includes.push_back(A->getValue(Args));
1486  }
1487
1488  // Include 'altivec.h' if -faltivec option present
1489  if (Args.hasArg(OPT_faltivec))
1490    Opts.Includes.push_back("altivec.h");
1491
1492  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1493         ie = Args.filtered_end(); it != ie; ++it) {
1494    const Arg *A = *it;
1495    std::pair<llvm::StringRef,llvm::StringRef> Split =
1496      llvm::StringRef(A->getValue(Args)).split(';');
1497
1498    if (Split.second.empty()) {
1499      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1500      continue;
1501    }
1502
1503    Opts.addRemappedFile(Split.first, Split.second);
1504  }
1505}
1506
1507static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1508                                        ArgList &Args) {
1509  using namespace cc1options;
1510  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1511  Opts.ShowComments = Args.hasArg(OPT_C);
1512  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1513  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1514  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1515  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1516}
1517
1518static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1519  using namespace cc1options;
1520  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1521  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1522  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1523  Opts.Features = Args.getAllArgValues(OPT_target_feature);
1524  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1525  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1526
1527  // Use the host triple if unspecified.
1528  if (Opts.Triple.empty())
1529    Opts.Triple = llvm::sys::getHostTriple();
1530}
1531
1532//
1533
1534void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1535                                        const char *const *ArgBegin,
1536                                        const char *const *ArgEnd,
1537                                        Diagnostic &Diags) {
1538  // Parse the arguments.
1539  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1540  unsigned MissingArgIndex, MissingArgCount;
1541  llvm::OwningPtr<InputArgList> Args(
1542    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1543
1544  // Check for missing argument error.
1545  if (MissingArgCount)
1546    Diags.Report(diag::err_drv_missing_argument)
1547      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1548
1549  // Issue errors on unknown arguments.
1550  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1551         ie = Args->filtered_end(); it != ie; ++it)
1552    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1553
1554  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1555  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1556  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1557  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1558  ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1559  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1560  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1561  if (DashX != IK_AST && DashX != IK_LLVM_IR)
1562    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1563  // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1564  // PCH file and find the original header name. Remove the need to do that in
1565  // ParsePreprocessorArgs and remove the FileManager
1566  // parameters from the function and the "FileManager.h" #include.
1567  FileManager FileMgr(Res.getFileSystemOpts());
1568  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1569  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1570  ParseTargetArgs(Res.getTargetOpts(), *Args);
1571}
1572