CompilerInvocation.cpp revision a5fc472b353b88be3b4981da946fb01f5a5cc0c6 
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 *getAnalysisStoreName(AnalysisStores Kind) {
34  switch (Kind) {
35  default:
36    llvm_unreachable("Unknown analysis store!");
37#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
38  case NAME##Model: return CMDFLAG;
39#include "clang/Frontend/Analyses.def"
40  }
41}
42
43static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
44  switch (Kind) {
45  default:
46    llvm_unreachable("Unknown analysis constraints!");
47#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
48  case NAME##Model: return CMDFLAG;
49#include "clang/Frontend/Analyses.def"
50  }
51}
52
53static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
54  switch (Kind) {
55  default:
56    llvm_unreachable("Unknown analysis client!");
57#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
58  case PD_##NAME: return CMDFLAG;
59#include "clang/Frontend/Analyses.def"
60  }
61}
62
63//===----------------------------------------------------------------------===//
64// Serialization (to args)
65//===----------------------------------------------------------------------===//
66
67static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
68                               std::vector<std::string> &Res) {
69  if (Opts.ShowCheckerHelp)
70    Res.push_back("-analyzer-checker-help");
71  if (Opts.AnalysisStoreOpt != BasicStoreModel) {
72    Res.push_back("-analyzer-store");
73    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
74  }
75  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
76    Res.push_back("-analyzer-constraints");
77    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
78  }
79  if (Opts.AnalysisDiagOpt != PD_HTML) {
80    Res.push_back("-analyzer-output");
81    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
82  }
83  if (!Opts.AnalyzeSpecificFunction.empty()) {
84    Res.push_back("-analyze-function");
85    Res.push_back(Opts.AnalyzeSpecificFunction);
86  }
87  if (Opts.AnalyzeAll)
88    Res.push_back("-analyzer-opt-analyze-headers");
89  if (Opts.AnalyzerDisplayProgress)
90    Res.push_back("-analyzer-display-progress");
91  if (Opts.AnalyzeNestedBlocks)
92    Res.push_back("-analyzer-opt-analyze-nested-blocks");
93  if (Opts.EagerlyAssume)
94    Res.push_back("-analyzer-eagerly-assume");
95  if (!Opts.PurgeDead)
96    Res.push_back("-analyzer-no-purge-dead");
97  if (Opts.TrimGraph)
98    Res.push_back("-trim-egraph");
99  if (Opts.VisualizeEGDot)
100    Res.push_back("-analyzer-viz-egraph-graphviz");
101  if (Opts.VisualizeEGUbi)
102    Res.push_back("-analyzer-viz-egraph-ubigraph");
103
104  for (unsigned i = 0, e = Opts.CheckersControlList.size(); i != e; ++i) {
105    const std::pair<std::string, bool> &opt = Opts.CheckersControlList[i];
106    if (opt.second)
107      Res.push_back("-analyzer-disable-checker");
108    else
109      Res.push_back("-analyzer-checker");
110    Res.push_back(opt.first);
111  }
112}
113
114static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
115                              std::vector<std::string> &Res) {
116  if (Opts.DebugInfo)
117    Res.push_back("-g");
118  if (Opts.DisableLLVMOpts)
119    Res.push_back("-disable-llvm-optzns");
120  if (Opts.DisableRedZone)
121    Res.push_back("-disable-red-zone");
122  if (!Opts.DwarfDebugFlags.empty()) {
123    Res.push_back("-dwarf-debug-flags");
124    Res.push_back(Opts.DwarfDebugFlags);
125  }
126  if (!Opts.MergeAllConstants)
127    Res.push_back("-fno-merge-all-constants");
128  if (Opts.NoCommon)
129    Res.push_back("-fno-common");
130  if (Opts.ForbidGuardVariables)
131    Res.push_back("-fforbid-guard-variables");
132  if (Opts.NoImplicitFloat)
133    Res.push_back("-no-implicit-float");
134  if (Opts.OmitLeafFramePointer)
135    Res.push_back("-momit-leaf-frame-pointer");
136  if (Opts.OptimizeSize) {
137    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
138    Res.push_back("-Os");
139  } else if (Opts.OptimizationLevel != 0)
140    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
141  if (!Opts.MainFileName.empty()) {
142    Res.push_back("-main-file-name");
143    Res.push_back(Opts.MainFileName);
144  }
145  // SimplifyLibCalls is only derived.
146  // TimePasses is only derived.
147  // UnitAtATime is unused.
148  // Inlining is only derived.
149
150  // UnrollLoops is derived, but also accepts an option, no
151  // harm in pushing it back here.
152  if (Opts.UnrollLoops)
153    Res.push_back("-funroll-loops");
154  if (Opts.DataSections)
155    Res.push_back("-fdata-sections");
156  if (Opts.FunctionSections)
157    Res.push_back("-ffunction-sections");
158  if (Opts.AsmVerbose)
159    Res.push_back("-masm-verbose");
160  if (!Opts.CodeModel.empty()) {
161    Res.push_back("-mcode-model");
162    Res.push_back(Opts.CodeModel);
163  }
164  if (!Opts.CXAAtExit)
165    Res.push_back("-fno-use-cxa-atexit");
166  if (Opts.CXXCtorDtorAliases)
167    Res.push_back("-mconstructor-aliases");
168  if (!Opts.DebugPass.empty()) {
169    Res.push_back("-mdebug-pass");
170    Res.push_back(Opts.DebugPass);
171  }
172  if (Opts.DisableFPElim)
173    Res.push_back("-mdisable-fp-elim");
174  if (!Opts.FloatABI.empty()) {
175    Res.push_back("-mfloat-abi");
176    Res.push_back(Opts.FloatABI);
177  }
178  if (!Opts.LimitFloatPrecision.empty()) {
179    Res.push_back("-mlimit-float-precision");
180    Res.push_back(Opts.LimitFloatPrecision);
181  }
182  if (Opts.NoZeroInitializedInBSS)
183    Res.push_back("-mno-zero-initialized-bss");
184  switch (Opts.getObjCDispatchMethod()) {
185  case CodeGenOptions::Legacy:
186    break;
187  case CodeGenOptions::Mixed:
188    Res.push_back("-fobjc-dispatch-method=mixed");
189    break;
190  case CodeGenOptions::NonLegacy:
191    Res.push_back("-fobjc-dispatch-method=non-legacy");
192    break;
193  }
194  if (Opts.NumRegisterParameters) {
195    Res.push_back("-mregparm");
196    Res.push_back(llvm::utostr(Opts.NumRegisterParameters));
197  }
198  if (Opts.RelaxAll)
199    Res.push_back("-mrelax-all");
200  if (Opts.SaveTempLabels)
201    Res.push_back("-msave-temp-labels");
202  if (Opts.SoftFloat)
203    Res.push_back("-msoft-float");
204  if (Opts.UnwindTables)
205    Res.push_back("-munwind-tables");
206  if (Opts.RelocationModel != "pic") {
207    Res.push_back("-mrelocation-model");
208    Res.push_back(Opts.RelocationModel);
209  }
210  if (!Opts.VerifyModule)
211    Res.push_back("-disable-llvm-verifier");
212  for (unsigned i = 0, e = Opts.BackendOptions.size(); i != e; ++i) {
213    Res.push_back("-backend-option");
214    Res.push_back(Opts.BackendOptions[i]);
215  }
216}
217
218static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
219                                       std::vector<std::string> &Res) {
220  if (Opts.IncludeSystemHeaders)
221    Res.push_back("-sys-header-deps");
222  if (Opts.ShowHeaderIncludes)
223    Res.push_back("-H");
224  if (!Opts.HeaderIncludeOutputFile.empty()) {
225    Res.push_back("-header-include-file");
226    Res.push_back(Opts.HeaderIncludeOutputFile);
227  }
228  if (Opts.UsePhonyTargets)
229    Res.push_back("-MP");
230  if (!Opts.OutputFile.empty()) {
231    Res.push_back("-dependency-file");
232    Res.push_back(Opts.OutputFile);
233  }
234  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
235    Res.push_back("-MT");
236    Res.push_back(Opts.Targets[i]);
237  }
238}
239
240static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
241                                 std::vector<std::string> &Res) {
242  if (Opts.IgnoreWarnings)
243    Res.push_back("-w");
244  if (Opts.NoRewriteMacros)
245    Res.push_back("-Wno-rewrite-macros");
246  if (Opts.Pedantic)
247    Res.push_back("-pedantic");
248  if (Opts.PedanticErrors)
249    Res.push_back("-pedantic-errors");
250  if (!Opts.ShowColumn)
251    Res.push_back("-fno-show-column");
252  if (!Opts.ShowLocation)
253    Res.push_back("-fno-show-source-location");
254  if (!Opts.ShowCarets)
255    Res.push_back("-fno-caret-diagnostics");
256  if (!Opts.ShowFixits)
257    Res.push_back("-fno-diagnostics-fixit-info");
258  if (Opts.ShowSourceRanges)
259    Res.push_back("-fdiagnostics-print-source-range-info");
260  if (Opts.ShowParseableFixits)
261    Res.push_back("-fdiagnostics-parseable-fixits");
262  if (Opts.ShowColors)
263    Res.push_back("-fcolor-diagnostics");
264  if (Opts.VerifyDiagnostics)
265    Res.push_back("-verify");
266  if (Opts.ShowOptionNames)
267    Res.push_back("-fdiagnostics-show-option");
268  if (Opts.ShowCategories == 1)
269    Res.push_back("-fdiagnostics-show-category=id");
270  else if (Opts.ShowCategories == 2)
271    Res.push_back("-fdiagnostics-show-category=name");
272  if (Opts.ErrorLimit) {
273    Res.push_back("-ferror-limit");
274    Res.push_back(llvm::utostr(Opts.ErrorLimit));
275  }
276  if (!Opts.DiagnosticLogFile.empty()) {
277    Res.push_back("-diagnostic-log-file");
278    Res.push_back(Opts.DiagnosticLogFile);
279  }
280  if (Opts.MacroBacktraceLimit
281                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
282    Res.push_back("-fmacro-backtrace-limit");
283    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
284  }
285  if (Opts.TemplateBacktraceLimit
286                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
287    Res.push_back("-ftemplate-backtrace-limit");
288    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
289  }
290
291  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
292    Res.push_back("-ftabstop");
293    Res.push_back(llvm::utostr(Opts.TabStop));
294  }
295  if (Opts.MessageLength) {
296    Res.push_back("-fmessage-length");
297    Res.push_back(llvm::utostr(Opts.MessageLength));
298  }
299  if (!Opts.DumpBuildInformation.empty()) {
300    Res.push_back("-dump-build-information");
301    Res.push_back(Opts.DumpBuildInformation);
302  }
303  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
304    Res.push_back("-W" + Opts.Warnings[i]);
305}
306
307static const char *getInputKindName(InputKind Kind) {
308  switch (Kind) {
309  case IK_None:              break;
310  case IK_AST:               return "ast";
311  case IK_Asm:               return "assembler-with-cpp";
312  case IK_C:                 return "c";
313  case IK_CXX:               return "c++";
314  case IK_LLVM_IR:           return "ir";
315  case IK_ObjC:              return "objective-c";
316  case IK_ObjCXX:            return "objective-c++";
317  case IK_OpenCL:            return "cl";
318  case IK_CUDA:              return "cuda";
319  case IK_PreprocessedC:     return "cpp-output";
320  case IK_PreprocessedCXX:   return "c++-cpp-output";
321  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
322  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
323  }
324
325  llvm_unreachable("Unexpected language kind!");
326  return 0;
327}
328
329static const char *getActionName(frontend::ActionKind Kind) {
330  switch (Kind) {
331  case frontend::PluginAction:
332    llvm_unreachable("Invalid kind!");
333
334  case frontend::ASTDump:                return "-ast-dump";
335  case frontend::ASTDumpXML:             return "-ast-dump-xml";
336  case frontend::ASTPrint:               return "-ast-print";
337  case frontend::ASTView:                return "-ast-view";
338  case frontend::BoostCon:               return "-boostcon";
339  case frontend::CreateModule:           return "-create-module";
340  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
341  case frontend::DumpTokens:             return "-dump-tokens";
342  case frontend::EmitAssembly:           return "-S";
343  case frontend::EmitBC:                 return "-emit-llvm-bc";
344  case frontend::EmitHTML:               return "-emit-html";
345  case frontend::EmitLLVM:               return "-emit-llvm";
346  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
347  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
348  case frontend::EmitObj:                return "-emit-obj";
349  case frontend::FixIt:                  return "-fixit";
350  case frontend::GeneratePCH:            return "-emit-pch";
351  case frontend::GeneratePTH:            return "-emit-pth";
352  case frontend::InitOnly:               return "-init-only";
353  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
354  case frontend::PrintDeclContext:       return "-print-decl-contexts";
355  case frontend::PrintPreamble:          return "-print-preamble";
356  case frontend::PrintPreprocessedInput: return "-E";
357  case frontend::RewriteMacros:          return "-rewrite-macros";
358  case frontend::RewriteObjC:            return "-rewrite-objc";
359  case frontend::RewriteTest:            return "-rewrite-test";
360  case frontend::RunAnalysis:            return "-analyze";
361  case frontend::RunPreprocessorOnly:    return "-Eonly";
362  }
363
364  llvm_unreachable("Unexpected language kind!");
365  return 0;
366}
367
368static void FileSystemOptsToArgs(const FileSystemOptions &Opts,
369                                 std::vector<std::string> &Res) {
370  if (!Opts.WorkingDir.empty()) {
371    Res.push_back("-working-directory");
372    Res.push_back(Opts.WorkingDir);
373  }
374}
375
376static void FrontendOptsToArgs(const FrontendOptions &Opts,
377                               std::vector<std::string> &Res) {
378  if (Opts.DisableFree)
379    Res.push_back("-disable-free");
380  if (Opts.RelocatablePCH)
381    Res.push_back("-relocatable-pch");
382  if (Opts.ChainedPCH)
383    Res.push_back("-chained-pch");
384  if (Opts.ShowHelp)
385    Res.push_back("-help");
386  if (Opts.ShowMacrosInCodeCompletion)
387    Res.push_back("-code-completion-macros");
388  if (Opts.ShowCodePatternsInCodeCompletion)
389    Res.push_back("-code-completion-patterns");
390  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
391    Res.push_back("-no-code-completion-globals");
392  if (Opts.ShowStats)
393    Res.push_back("-print-stats");
394  if (Opts.ShowTimers)
395    Res.push_back("-ftime-report");
396  if (Opts.ShowVersion)
397    Res.push_back("-version");
398  if (Opts.FixWhatYouCan)
399    Res.push_back("-fix-what-you-can");
400
401  bool NeedLang = false;
402  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
403    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
404        Opts.Inputs[i].first)
405      NeedLang = true;
406  if (NeedLang) {
407    Res.push_back("-x");
408    Res.push_back(getInputKindName(Opts.Inputs[0].first));
409  }
410  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
411    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
412           "Unable to represent this input vector!");
413    Res.push_back(Opts.Inputs[i].second);
414  }
415
416  if (!Opts.OutputFile.empty()) {
417    Res.push_back("-o");
418    Res.push_back(Opts.OutputFile);
419  }
420  if (!Opts.CodeCompletionAt.FileName.empty()) {
421    Res.push_back("-code-completion-at");
422    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
423                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
424                  llvm::utostr(Opts.CodeCompletionAt.Column));
425  }
426  if (Opts.ProgramAction != frontend::PluginAction)
427    Res.push_back(getActionName(Opts.ProgramAction));
428  if (!Opts.ActionName.empty()) {
429    Res.push_back("-plugin");
430    Res.push_back(Opts.ActionName);
431    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
432      Res.push_back("-plugin-arg-" + Opts.ActionName);
433      Res.push_back(Opts.PluginArgs[i]);
434    }
435  }
436  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
437    Res.push_back("-load");
438    Res.push_back(Opts.Plugins[i]);
439  }
440  for (unsigned i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
441    Res.push_back("-add-plugin");
442    Res.push_back(Opts.AddPluginActions[i]);
443    for(unsigned ai = 0, ae = Opts.AddPluginArgs.size(); ai != ae; ++ai) {
444      Res.push_back("-plugin-arg-" + Opts.AddPluginActions[i]);
445      Res.push_back(Opts.AddPluginArgs[i][ai]);
446    }
447  }
448  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
449    Res.push_back("-ast-merge");
450    Res.push_back(Opts.ASTMergeFiles[i]);
451  }
452  for (unsigned i = 0, e = Opts.Modules.size(); i != e; ++i) {
453    Res.push_back("-import-module");
454    Res.push_back(Opts.Modules[i]);
455  }
456  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
457    Res.push_back("-mllvm");
458    Res.push_back(Opts.LLVMArgs[i]);
459  }
460}
461
462static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
463                                   std::vector<std::string> &Res) {
464  if (Opts.Sysroot != "/") {
465    Res.push_back("-isysroot");
466    Res.push_back(Opts.Sysroot);
467  }
468
469  /// User specified include entries.
470  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
471    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
472    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
473      llvm::report_fatal_error("Invalid option set!");
474    if (E.IsUserSupplied) {
475      if (E.Group == frontend::After) {
476        Res.push_back("-idirafter");
477      } else if (E.Group == frontend::Quoted) {
478        Res.push_back("-iquote");
479      } else if (E.Group == frontend::System) {
480        Res.push_back("-isystem");
481      } else if (E.Group == frontend::CXXSystem) {
482        Res.push_back("-cxx-isystem");
483      } else {
484        assert(E.Group == frontend::Angled && "Invalid group!");
485        Res.push_back(E.IsFramework ? "-F" : "-I");
486      }
487    } else {
488      if (E.Group != frontend::Angled && E.Group != frontend::System)
489        llvm::report_fatal_error("Invalid option set!");
490      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
491                    "-iwithprefix");
492    }
493    Res.push_back(E.Path);
494  }
495
496  if (!Opts.EnvIncPath.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.CEnvIncPath.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.ObjCEnvIncPath.empty()) {
505    // FIXME: Provide an option for this, and move env detection to driver.
506    llvm::report_fatal_error("Not yet implemented!");
507  }
508  if (!Opts.CXXEnvIncPath.empty()) {
509    // FIXME: Provide an option for this, and move env detection to driver.
510    llvm::report_fatal_error("Not yet implemented!");
511  }
512  if (!Opts.ObjCXXEnvIncPath.empty()) {
513    // FIXME: Provide an option for this, and move env detection to driver.
514    llvm::report_fatal_error("Not yet implemented!");
515  }
516  if (!Opts.ResourceDir.empty()) {
517    Res.push_back("-resource-dir");
518    Res.push_back(Opts.ResourceDir);
519  }
520  if (!Opts.UseStandardIncludes)
521    Res.push_back("-nostdinc");
522  if (!Opts.UseStandardCXXIncludes)
523    Res.push_back("-nostdinc++");
524  if (Opts.Verbose)
525    Res.push_back("-v");
526}
527
528static void LangOptsToArgs(const LangOptions &Opts,
529                           std::vector<std::string> &Res) {
530  LangOptions DefaultLangOpts;
531
532  // FIXME: Need to set -std to get all the implicit options.
533
534  // FIXME: We want to only pass options relative to the defaults, which
535  // requires constructing a target. :(
536  //
537  // It would be better to push the all target specific choices into the driver,
538  // so that everything below that was more uniform.
539
540  if (Opts.Trigraphs)
541    Res.push_back("-trigraphs");
542  // Implicit based on the input kind:
543  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
544  // Implicit based on the input language standard:
545  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
546  if (Opts.DollarIdents)
547    Res.push_back("-fdollars-in-identifiers");
548  if (Opts.GNUMode && !Opts.GNUKeywords)
549    Res.push_back("-fno-gnu-keywords");
550  if (!Opts.GNUMode && Opts.GNUKeywords)
551    Res.push_back("-fgnu-keywords");
552  if (Opts.Microsoft)
553    Res.push_back("-fms-extensions");
554  if (Opts.MSCVersion != 0)
555    Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
556  if (Opts.Borland)
557    Res.push_back("-fborland-extensions");
558  if (Opts.ObjCNonFragileABI)
559    Res.push_back("-fobjc-nonfragile-abi");
560  if (Opts.ObjCNonFragileABI2)
561    Res.push_back("-fobjc-nonfragile-abi");
562  if (Opts.ObjCDefaultSynthProperties)
563    Res.push_back("-fobjc-default-synthesize-properties");
564  // NoInline is implicit.
565  if (!Opts.CXXOperatorNames)
566    Res.push_back("-fno-operator-names");
567  if (Opts.PascalStrings)
568    Res.push_back("-fpascal-strings");
569  if (Opts.CatchUndefined)
570    Res.push_back("-fcatch-undefined-behavior");
571  if (Opts.WritableStrings)
572    Res.push_back("-fwritable-strings");
573  if (Opts.ConstStrings)
574    Res.push_back("-Wwrite-strings");
575  if (!Opts.LaxVectorConversions)
576    Res.push_back("-fno-lax-vector-conversions");
577  if (Opts.AltiVec)
578    Res.push_back("-faltivec");
579  if (Opts.Exceptions)
580    Res.push_back("-fexceptions");
581  if (Opts.ObjCExceptions)
582    Res.push_back("-fobjc-exceptions");
583  if (Opts.CXXExceptions)
584    Res.push_back("-fcxx-exceptions");
585  if (Opts.SjLjExceptions)
586    Res.push_back("-fsjlj-exceptions");
587  if (Opts.TraditionalCPP)
588    Res.push_back("-traditional-cpp");
589  if (!Opts.RTTI)
590    Res.push_back("-fno-rtti");
591  if (Opts.MSBitfields)
592    Res.push_back("-mms-bitfields");
593  if (!Opts.NeXTRuntime)
594    Res.push_back("-fgnu-runtime");
595  if (Opts.Freestanding)
596    Res.push_back("-ffreestanding");
597  if (Opts.NoBuiltin)
598    Res.push_back("-fno-builtin");
599  if (!Opts.AssumeSaneOperatorNew)
600    Res.push_back("-fno-assume-sane-operator-new");
601  if (!Opts.ThreadsafeStatics)
602    Res.push_back("-fno-threadsafe-statics");
603  if (Opts.POSIXThreads)
604    Res.push_back("-pthread");
605  if (Opts.Blocks)
606    Res.push_back("-fblocks");
607  if (Opts.EmitAllDecls)
608    Res.push_back("-femit-all-decls");
609  if (Opts.MathErrno)
610    Res.push_back("-fmath-errno");
611  switch (Opts.getSignedOverflowBehavior()) {
612  case LangOptions::SOB_Undefined: break;
613  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
614  case LangOptions::SOB_Trapping:
615    Res.push_back("-ftrapv"); break;
616    if (!Opts.OverflowHandler.empty()) {
617      Res.push_back("-ftrapv-handler");
618      Res.push_back(Opts.OverflowHandler);
619    }
620  }
621  if (Opts.HeinousExtensions)
622    Res.push_back("-fheinous-gnu-extensions");
623  // Optimize is implicit.
624  // OptimizeSize is implicit.
625  if (Opts.Static)
626    Res.push_back("-static-define");
627  if (Opts.DumpRecordLayouts)
628    Res.push_back("-fdump-record-layouts");
629  if (Opts.DumpVTableLayouts)
630    Res.push_back("-fdump-vtable-layouts");
631  if (Opts.NoBitFieldTypeAlign)
632    Res.push_back("-fno-bitfield-type-alignment");
633  if (Opts.PICLevel) {
634    Res.push_back("-pic-level");
635    Res.push_back(llvm::utostr(Opts.PICLevel));
636  }
637  if (Opts.ObjCGCBitmapPrint)
638    Res.push_back("-print-ivar-layout");
639  if (Opts.NoConstantCFStrings)
640    Res.push_back("-fno-constant-cfstrings");
641  if (!Opts.AccessControl)
642    Res.push_back("-fno-access-control");
643  if (!Opts.CharIsSigned)
644    Res.push_back("-fno-signed-char");
645  if (Opts.ShortWChar)
646    Res.push_back("-fshort-wchar");
647  if (!Opts.ElideConstructors)
648    Res.push_back("-fno-elide-constructors");
649  if (Opts.getGCMode() != LangOptions::NonGC) {
650    if (Opts.getGCMode() == LangOptions::HybridGC) {
651      Res.push_back("-fobjc-gc");
652    } else {
653      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
654      Res.push_back("-fobjc-gc-only");
655    }
656  }
657  if (Opts.AppleKext)
658    Res.push_back("-fapple-kext");
659
660  if (Opts.getVisibilityMode() != DefaultVisibility) {
661    Res.push_back("-fvisibility");
662    if (Opts.getVisibilityMode() == HiddenVisibility) {
663      Res.push_back("hidden");
664    } else {
665      assert(Opts.getVisibilityMode() == ProtectedVisibility &&
666             "Invalid visibility!");
667      Res.push_back("protected");
668    }
669  }
670  if (Opts.InlineVisibilityHidden)
671    Res.push_back("-fvisibility-inlines-hidden");
672
673  if (Opts.getStackProtectorMode() != 0) {
674    Res.push_back("-stack-protector");
675    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
676  }
677  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
678    Res.push_back("-ftemplate-depth");
679    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
680  }
681  if (!Opts.ObjCConstantStringClass.empty()) {
682    Res.push_back("-fconstant-string-class");
683    Res.push_back(Opts.ObjCConstantStringClass);
684  }
685  if (Opts.FakeAddressSpaceMap)
686    Res.push_back("-ffake-address-space-map");
687  if (Opts.ParseUnknownAnytype)
688    Res.push_back("-funknown-anytype");
689}
690
691static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
692                                   std::vector<std::string> &Res) {
693  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
694    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
695                  Opts.Macros[i].first);
696  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
697    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
698    Res.push_back("-include");
699    Res.push_back(Opts.Includes[i]);
700  }
701  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
702    Res.push_back("-imacros");
703    Res.push_back(Opts.MacroIncludes[i]);
704  }
705  if (!Opts.UsePredefines)
706    Res.push_back("-undef");
707  if (Opts.DetailedRecord)
708    Res.push_back("-detailed-preprocessing-record");
709  if (!Opts.ImplicitPCHInclude.empty()) {
710    Res.push_back("-include-pch");
711    Res.push_back(Opts.ImplicitPCHInclude);
712  }
713  if (!Opts.ImplicitPTHInclude.empty()) {
714    Res.push_back("-include-pth");
715    Res.push_back(Opts.ImplicitPTHInclude);
716  }
717  if (!Opts.TokenCache.empty()) {
718    if (Opts.ImplicitPTHInclude.empty()) {
719      Res.push_back("-token-cache");
720      Res.push_back(Opts.TokenCache);
721    } else
722      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
723             "Unsupported option combination!");
724  }
725  for (unsigned i = 0, e = Opts.ChainedIncludes.size(); i != e; ++i) {
726    Res.push_back("-chain-include");
727    Res.push_back(Opts.ChainedIncludes[i]);
728  }
729  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
730    Res.push_back("-remap-file");
731    Res.push_back(Opts.RemappedFiles[i].first + ";" +
732                  Opts.RemappedFiles[i].second);
733  }
734}
735
736static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
737                                         std::vector<std::string> &Res) {
738  if (!Opts.ShowCPP && !Opts.ShowMacros)
739    llvm::report_fatal_error("Invalid option combination!");
740
741  if (Opts.ShowCPP && Opts.ShowMacros)
742    Res.push_back("-dD");
743  else if (!Opts.ShowCPP && Opts.ShowMacros)
744    Res.push_back("-dM");
745
746  if (!Opts.ShowLineMarkers)
747    Res.push_back("-P");
748  if (Opts.ShowComments)
749    Res.push_back("-C");
750  if (Opts.ShowMacroComments)
751    Res.push_back("-CC");
752}
753
754static void TargetOptsToArgs(const TargetOptions &Opts,
755                             std::vector<std::string> &Res) {
756  Res.push_back("-triple");
757  Res.push_back(Opts.Triple);
758  if (!Opts.CPU.empty()) {
759    Res.push_back("-target-cpu");
760    Res.push_back(Opts.CPU);
761  }
762  if (!Opts.ABI.empty()) {
763    Res.push_back("-target-abi");
764    Res.push_back(Opts.ABI);
765  }
766  if (!Opts.LinkerVersion.empty()) {
767    Res.push_back("-target-linker-version");
768    Res.push_back(Opts.LinkerVersion);
769  }
770  if (!Opts.CXXABI.empty()) {
771    Res.push_back("-cxx-abi");
772    Res.push_back(Opts.CXXABI);
773  }
774  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
775    Res.push_back("-target-feature");
776    Res.push_back(Opts.Features[i]);
777  }
778}
779
780void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
781  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
782  CodeGenOptsToArgs(getCodeGenOpts(), Res);
783  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
784  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
785  FileSystemOptsToArgs(getFileSystemOpts(), Res);
786  FrontendOptsToArgs(getFrontendOpts(), Res);
787  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
788  LangOptsToArgs(getLangOpts(), Res);
789  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
790  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
791  TargetOptsToArgs(getTargetOpts(), Res);
792}
793
794//===----------------------------------------------------------------------===//
795// Deserialization (to args)
796//===----------------------------------------------------------------------===//
797
798using namespace clang::driver;
799using namespace clang::driver::cc1options;
800
801//
802
803static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
804                                     Diagnostic &Diags) {
805  unsigned DefaultOpt = 0;
806  if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
807    DefaultOpt = 2;
808  // -Os implies -O2
809  return Args.hasArg(OPT_Os) ? 2 :
810    Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
811}
812
813static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
814                              Diagnostic &Diags) {
815  using namespace cc1options;
816
817  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
818    llvm::StringRef Name = A->getValue(Args);
819    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
820#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
821      .Case(CMDFLAG, NAME##Model)
822#include "clang/Frontend/Analyses.def"
823      .Default(NumStores);
824    // FIXME: Error handling.
825    if (Value == NumStores)
826      Diags.Report(diag::err_drv_invalid_value)
827        << A->getAsString(Args) << Name;
828    else
829      Opts.AnalysisStoreOpt = Value;
830  }
831
832  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
833    llvm::StringRef Name = A->getValue(Args);
834    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
835#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
836      .Case(CMDFLAG, NAME##Model)
837#include "clang/Frontend/Analyses.def"
838      .Default(NumConstraints);
839    // FIXME: Error handling.
840    if (Value == NumConstraints)
841      Diags.Report(diag::err_drv_invalid_value)
842        << A->getAsString(Args) << Name;
843    else
844      Opts.AnalysisConstraintsOpt = Value;
845  }
846
847  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
848    llvm::StringRef Name = A->getValue(Args);
849    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
850#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
851      .Case(CMDFLAG, PD_##NAME)
852#include "clang/Frontend/Analyses.def"
853      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
854    // FIXME: Error handling.
855    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
856      Diags.Report(diag::err_drv_invalid_value)
857        << A->getAsString(Args) << Name;
858    else
859      Opts.AnalysisDiagOpt = Value;
860  }
861
862  Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
863  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
864  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
865  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
866  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
867  Opts.AnalyzeNestedBlocks =
868    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
869  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
870  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
871  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
872  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
873  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
874  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
875  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
876  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
877  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
878  Opts.EagerlyTrimEGraph = !Args.hasArg(OPT_analyzer_no_eagerly_trim_egraph);
879  Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
880
881  Opts.CheckersControlList.clear();
882  for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
883                                             OPT_analyzer_disable_checker),
884         ie = Args.filtered_end(); it != ie; ++it) {
885    const Arg *A = *it;
886    A->claim();
887    bool enable = (A->getOption().getID() == OPT_analyzer_checker);
888    // We can have a list of comma separated checker names, e.g:
889    // '-analyzer-checker=cocoa,unix'
890    llvm::StringRef checkerList = A->getValue(Args);
891    llvm::SmallVector<llvm::StringRef, 4> checkers;
892    checkerList.split(checkers, ",");
893    for (unsigned i = 0, e = checkers.size(); i != e; ++i)
894      Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
895  }
896}
897
898static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
899                             Diagnostic &Diags) {
900  using namespace cc1options;
901
902  Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
903  if (Opts.OptimizationLevel > 3) {
904    Diags.Report(diag::err_drv_invalid_value)
905      << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
906    Opts.OptimizationLevel = 3;
907  }
908
909  // We must always run at least the always inlining pass.
910  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
911    : CodeGenOptions::OnlyAlwaysInlining;
912
913  Opts.DebugInfo = Args.hasArg(OPT_g);
914  Opts.LimitDebugInfo = Args.hasArg(OPT_flimit_debug_info);
915  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
916  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
917  Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
918  Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
919  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
920  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
921  Opts.NoCommon = Args.hasArg(OPT_fno_common);
922  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
923  Opts.OptimizeSize = Args.hasArg(OPT_Os);
924  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
925                            Args.hasArg(OPT_ffreestanding));
926  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
927                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
928
929  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
930  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
931  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
932  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
933  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
934  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
935  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
936  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
937  Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
938  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
939  Opts.NoInfsFPMath = Opts.NoNaNsFPMath = Args.hasArg(OPT_cl_finite_math_only)||
940                                          Args.hasArg(OPT_cl_fast_relaxed_math);
941  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
942  Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
943  Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
944  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
945  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
946  Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
947  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
948  Opts.UnsafeFPMath = Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
949                      Args.hasArg(OPT_cl_fast_relaxed_math);
950  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
951  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
952
953  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
954  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
955
956  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
957  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
958
959  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
960  Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
961
962  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
963    llvm::StringRef Name = A->getValue(Args);
964    unsigned Method = llvm::StringSwitch<unsigned>(Name)
965      .Case("legacy", CodeGenOptions::Legacy)
966      .Case("non-legacy", CodeGenOptions::NonLegacy)
967      .Case("mixed", CodeGenOptions::Mixed)
968      .Default(~0U);
969    if (Method == ~0U)
970      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
971    else
972      Opts.ObjCDispatchMethod = Method;
973  }
974}
975
976static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
977                                      ArgList &Args) {
978  using namespace cc1options;
979  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
980  Opts.Targets = Args.getAllArgValues(OPT_MT);
981  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
982  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
983  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
984  Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
985}
986
987static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
988                                Diagnostic &Diags) {
989  using namespace cc1options;
990  Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
991  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
992  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
993  Opts.Pedantic = Args.hasArg(OPT_pedantic);
994  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
995  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
996  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
997  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
998  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
999  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1000  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
1001
1002  // Default behavior is to not to show note include stacks.
1003  Opts.ShowNoteIncludeStack = false;
1004  if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1005                               OPT_fno_diagnostics_show_note_include_stack))
1006    if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1007      Opts.ShowNoteIncludeStack = true;
1008
1009  llvm::StringRef ShowOverloads =
1010    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1011  if (ShowOverloads == "best")
1012    Opts.ShowOverloads = Diagnostic::Ovl_Best;
1013  else if (ShowOverloads == "all")
1014    Opts.ShowOverloads = Diagnostic::Ovl_All;
1015  else
1016    Diags.Report(diag::err_drv_invalid_value)
1017      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1018      << ShowOverloads;
1019
1020  llvm::StringRef ShowCategory =
1021    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1022  if (ShowCategory == "none")
1023    Opts.ShowCategories = 0;
1024  else if (ShowCategory == "id")
1025    Opts.ShowCategories = 1;
1026  else if (ShowCategory == "name")
1027    Opts.ShowCategories = 2;
1028  else
1029    Diags.Report(diag::err_drv_invalid_value)
1030      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1031      << ShowCategory;
1032
1033  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1034  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1035  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1036  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
1037  Opts.MacroBacktraceLimit
1038    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
1039                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1040  Opts.TemplateBacktraceLimit
1041    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
1042                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
1043                         Diags);
1044  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
1045                                    DiagnosticOptions::DefaultTabStop, Diags);
1046  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1047    Diags.Report(diag::warn_ignoring_ftabstop_value)
1048      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1049    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1050  }
1051  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
1052  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
1053  Opts.Warnings = Args.getAllArgValues(OPT_W);
1054}
1055
1056static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1057  Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1058}
1059
1060static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1061                                   Diagnostic &Diags) {
1062  using namespace cc1options;
1063  Opts.ProgramAction = frontend::ParseSyntaxOnly;
1064  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1065    switch (A->getOption().getID()) {
1066    default:
1067      assert(0 && "Invalid option in group!");
1068    case OPT_ast_dump:
1069      Opts.ProgramAction = frontend::ASTDump; break;
1070    case OPT_ast_dump_xml:
1071      Opts.ProgramAction = frontend::ASTDumpXML; break;
1072    case OPT_ast_print:
1073      Opts.ProgramAction = frontend::ASTPrint; break;
1074    case OPT_ast_view:
1075      Opts.ProgramAction = frontend::ASTView; break;
1076    case OPT_boostcon:
1077      Opts.ProgramAction = frontend::BoostCon; break;
1078    case OPT_dump_raw_tokens:
1079      Opts.ProgramAction = frontend::DumpRawTokens; break;
1080    case OPT_dump_tokens:
1081      Opts.ProgramAction = frontend::DumpTokens; break;
1082    case OPT_S:
1083      Opts.ProgramAction = frontend::EmitAssembly; break;
1084    case OPT_emit_llvm_bc:
1085      Opts.ProgramAction = frontend::EmitBC; break;
1086    case OPT_emit_html:
1087      Opts.ProgramAction = frontend::EmitHTML; break;
1088    case OPT_emit_llvm:
1089      Opts.ProgramAction = frontend::EmitLLVM; break;
1090    case OPT_emit_llvm_only:
1091      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1092    case OPT_emit_codegen_only:
1093      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1094    case OPT_emit_obj:
1095      Opts.ProgramAction = frontend::EmitObj; break;
1096    case OPT_fixit_EQ:
1097      Opts.FixItSuffix = A->getValue(Args);
1098      // fall-through!
1099    case OPT_fixit:
1100      Opts.ProgramAction = frontend::FixIt; break;
1101    case OPT_emit_pch:
1102      Opts.ProgramAction = frontend::GeneratePCH; break;
1103    case OPT_emit_pth:
1104      Opts.ProgramAction = frontend::GeneratePTH; break;
1105    case OPT_init_only:
1106      Opts.ProgramAction = frontend::InitOnly; break;
1107    case OPT_fsyntax_only:
1108      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1109    case OPT_print_decl_contexts:
1110      Opts.ProgramAction = frontend::PrintDeclContext; break;
1111    case OPT_print_preamble:
1112      Opts.ProgramAction = frontend::PrintPreamble; break;
1113    case OPT_E:
1114      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1115    case OPT_rewrite_macros:
1116      Opts.ProgramAction = frontend::RewriteMacros; break;
1117    case OPT_rewrite_objc:
1118      Opts.ProgramAction = frontend::RewriteObjC; break;
1119    case OPT_rewrite_test:
1120      Opts.ProgramAction = frontend::RewriteTest; break;
1121    case OPT_analyze:
1122      Opts.ProgramAction = frontend::RunAnalysis; break;
1123    case OPT_Eonly:
1124      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1125    case OPT_create_module:
1126      Opts.ProgramAction = frontend::CreateModule; break;
1127    }
1128  }
1129
1130  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1131    Opts.Plugins.push_back(A->getValue(Args,0));
1132    Opts.ProgramAction = frontend::PluginAction;
1133    Opts.ActionName = A->getValue(Args);
1134
1135    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1136           end = Args.filtered_end(); it != end; ++it) {
1137      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1138        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1139    }
1140  }
1141
1142  Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1143  Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
1144  for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
1145    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1146           end = Args.filtered_end(); it != end; ++it) {
1147      if ((*it)->getValue(Args, 0) == Opts.AddPluginActions[i])
1148        Opts.AddPluginArgs[i].push_back((*it)->getValue(Args, 1));
1149    }
1150  }
1151
1152  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1153    Opts.CodeCompletionAt =
1154      ParsedSourceLocation::FromString(A->getValue(Args));
1155    if (Opts.CodeCompletionAt.FileName.empty())
1156      Diags.Report(diag::err_drv_invalid_value)
1157        << A->getAsString(Args) << A->getValue(Args);
1158  }
1159  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1160
1161  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1162  Opts.Plugins = Args.getAllArgValues(OPT_load);
1163  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1164  Opts.ChainedPCH = Args.hasArg(OPT_chained_pch);
1165  Opts.ShowHelp = Args.hasArg(OPT_help);
1166  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1167  Opts.ShowCodePatternsInCodeCompletion
1168    = Args.hasArg(OPT_code_completion_patterns);
1169  Opts.ShowGlobalSymbolsInCodeCompletion
1170    = !Args.hasArg(OPT_no_code_completion_globals);
1171  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1172  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1173  Opts.ShowVersion = Args.hasArg(OPT_version);
1174  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1175  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1176  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1177  Opts.Modules = Args.getAllArgValues(OPT_import_module);
1178
1179  InputKind DashX = IK_None;
1180  if (const Arg *A = Args.getLastArg(OPT_x)) {
1181    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1182      .Case("c", IK_C)
1183      .Case("cl", IK_OpenCL)
1184      .Case("c", IK_C)
1185      .Case("cl", IK_OpenCL)
1186      .Case("cuda", IK_CUDA)
1187      .Case("c++", IK_CXX)
1188      .Case("objective-c", IK_ObjC)
1189      .Case("objective-c++", IK_ObjCXX)
1190      .Case("cpp-output", IK_PreprocessedC)
1191      .Case("assembler-with-cpp", IK_Asm)
1192      .Case("c++-cpp-output", IK_PreprocessedCXX)
1193      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1194      .Case("objc-cpp-output", IK_PreprocessedObjC)
1195      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1196      .Case("c-header", IK_C)
1197      .Case("objective-c-header", IK_ObjC)
1198      .Case("c++-header", IK_CXX)
1199      .Case("objective-c++-header", IK_ObjCXX)
1200      .Case("ast", IK_AST)
1201      .Case("ir", IK_LLVM_IR)
1202      .Default(IK_None);
1203    if (DashX == IK_None)
1204      Diags.Report(diag::err_drv_invalid_value)
1205        << A->getAsString(Args) << A->getValue(Args);
1206  }
1207
1208  // '-' is the default input if none is given.
1209  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1210  Opts.Inputs.clear();
1211  if (Inputs.empty())
1212    Inputs.push_back("-");
1213  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1214    InputKind IK = DashX;
1215    if (IK == IK_None) {
1216      IK = FrontendOptions::getInputKindForExtension(
1217        llvm::StringRef(Inputs[i]).rsplit('.').second);
1218      // FIXME: Remove this hack.
1219      if (i == 0)
1220        DashX = IK;
1221    }
1222    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1223  }
1224
1225  return DashX;
1226}
1227
1228std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1229                                                 void *MainAddr) {
1230  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1231
1232  if (!P.isEmpty()) {
1233    P.eraseComponent();  // Remove /clang from foo/bin/clang
1234    P.eraseComponent();  // Remove /bin   from foo/bin
1235
1236    // Get foo/lib/clang/<version>/include
1237    P.appendComponent("lib");
1238    P.appendComponent("clang");
1239    P.appendComponent(CLANG_VERSION_STRING);
1240  }
1241
1242  return P.str();
1243}
1244
1245static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1246  using namespace cc1options;
1247  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1248  Opts.Verbose = Args.hasArg(OPT_v);
1249  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1250  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1251  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1252  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1253
1254  // Add -I... and -F... options in order.
1255  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1256         ie = Args.filtered_end(); it != ie; ++it)
1257    Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1258                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1259
1260  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1261  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1262  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1263                                             OPT_iwithprefixbefore),
1264         ie = Args.filtered_end(); it != ie; ++it) {
1265    const Arg *A = *it;
1266    if (A->getOption().matches(OPT_iprefix))
1267      Prefix = A->getValue(Args);
1268    else if (A->getOption().matches(OPT_iwithprefix))
1269      Opts.AddPath(Prefix.str() + A->getValue(Args),
1270                   frontend::System, false, false, true);
1271    else
1272      Opts.AddPath(Prefix.str() + A->getValue(Args),
1273                   frontend::Angled, false, false, true);
1274  }
1275
1276  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1277         ie = Args.filtered_end(); it != ie; ++it)
1278    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, true);
1279  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1280         ie = Args.filtered_end(); it != ie; ++it)
1281    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, true);
1282  for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem, OPT_isystem,
1283         OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1284    Opts.AddPath((*it)->getValue(Args),
1285                 ((*it)->getOption().matches(OPT_cxx_isystem) ?
1286                   frontend::CXXSystem : frontend::System),
1287                 true, false, (*it)->getOption().matches(OPT_iwithsysroot));
1288
1289  // FIXME: Need options for the various environment variables!
1290}
1291
1292void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1293                                         LangStandard::Kind LangStd) {
1294  // Set some properties which depend soley on the input kind; it would be nice
1295  // to move these to the language standard, and have the driver resolve the
1296  // input kind + language standard.
1297  if (IK == IK_Asm) {
1298    Opts.AsmPreprocessor = 1;
1299  } else if (IK == IK_ObjC ||
1300             IK == IK_ObjCXX ||
1301             IK == IK_PreprocessedObjC ||
1302             IK == IK_PreprocessedObjCXX) {
1303    Opts.ObjC1 = Opts.ObjC2 = 1;
1304  }
1305
1306  if (LangStd == LangStandard::lang_unspecified) {
1307    // Based on the base language, pick one.
1308    switch (IK) {
1309    case IK_None:
1310    case IK_AST:
1311    case IK_LLVM_IR:
1312      assert(0 && "Invalid input kind!");
1313    case IK_OpenCL:
1314      LangStd = LangStandard::lang_opencl;
1315      break;
1316    case IK_CUDA:
1317      LangStd = LangStandard::lang_cuda;
1318      break;
1319    case IK_Asm:
1320    case IK_C:
1321    case IK_PreprocessedC:
1322    case IK_ObjC:
1323    case IK_PreprocessedObjC:
1324      LangStd = LangStandard::lang_gnu99;
1325      break;
1326    case IK_CXX:
1327    case IK_PreprocessedCXX:
1328    case IK_ObjCXX:
1329    case IK_PreprocessedObjCXX:
1330      LangStd = LangStandard::lang_gnucxx98;
1331      break;
1332    }
1333  }
1334
1335  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1336  Opts.BCPLComment = Std.hasBCPLComments();
1337  Opts.C99 = Std.isC99();
1338  Opts.CPlusPlus = Std.isCPlusPlus();
1339  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1340  Opts.Digraphs = Std.hasDigraphs();
1341  Opts.GNUMode = Std.isGNUMode();
1342  Opts.GNUInline = !Std.isC99();
1343  Opts.HexFloats = Std.hasHexFloats();
1344  Opts.ImplicitInt = Std.hasImplicitInt();
1345
1346  // OpenCL has some additional defaults.
1347  if (LangStd == LangStandard::lang_opencl) {
1348    Opts.OpenCL = 1;
1349    Opts.AltiVec = 1;
1350    Opts.CXXOperatorNames = 1;
1351    Opts.LaxVectorConversions = 1;
1352    Opts.DefaultFPContract = 1;
1353  }
1354
1355  if (LangStd == LangStandard::lang_cuda)
1356    Opts.CUDA = 1;
1357
1358  // OpenCL and C++ both have bool, true, false keywords.
1359  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1360
1361  Opts.GNUKeywords = Opts.GNUMode;
1362  Opts.CXXOperatorNames = Opts.CPlusPlus;
1363
1364  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1365  // is specified, or -std is set to a conforming mode.
1366  Opts.Trigraphs = !Opts.GNUMode;
1367
1368  Opts.DollarIdents = !Opts.AsmPreprocessor;
1369}
1370
1371static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1372                          Diagnostic &Diags) {
1373  // FIXME: Cleanup per-file based stuff.
1374  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1375  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1376    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1377#define LANGSTANDARD(id, name, desc, features) \
1378      .Case(name, LangStandard::lang_##id)
1379#include "clang/Frontend/LangStandards.def"
1380      .Default(LangStandard::lang_unspecified);
1381    if (LangStd == LangStandard::lang_unspecified)
1382      Diags.Report(diag::err_drv_invalid_value)
1383        << A->getAsString(Args) << A->getValue(Args);
1384  }
1385
1386  if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1387    if (strcmp(A->getValue(Args), "CL1.1") != 0) {
1388      Diags.Report(diag::err_drv_invalid_value)
1389        << A->getAsString(Args) << A->getValue(Args);
1390    }
1391  }
1392
1393  CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1394
1395  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1396  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1397  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1398  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1399  // name, as it doesn't seem a useful distinction.
1400  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1401                                  Opts.GNUKeywords);
1402
1403  if (Args.hasArg(OPT_fno_operator_names))
1404    Opts.CXXOperatorNames = 0;
1405
1406  if (Args.hasArg(OPT_fobjc_gc_only))
1407    Opts.setGCMode(LangOptions::GCOnly);
1408  else if (Args.hasArg(OPT_fobjc_gc))
1409    Opts.setGCMode(LangOptions::HybridGC);
1410
1411  if (Args.hasArg(OPT_fapple_kext)) {
1412    if (!Opts.CPlusPlus)
1413      Diags.Report(diag::warn_c_kext);
1414    else
1415      Opts.AppleKext = 1;
1416  }
1417
1418  if (Args.hasArg(OPT_print_ivar_layout))
1419    Opts.ObjCGCBitmapPrint = 1;
1420  if (Args.hasArg(OPT_fno_constant_cfstrings))
1421    Opts.NoConstantCFStrings = 1;
1422
1423  if (Args.hasArg(OPT_faltivec))
1424    Opts.AltiVec = 1;
1425
1426  if (Args.hasArg(OPT_pthread))
1427    Opts.POSIXThreads = 1;
1428
1429  llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1430  if (Vis == "default")
1431    Opts.setVisibilityMode(DefaultVisibility);
1432  else if (Vis == "hidden")
1433    Opts.setVisibilityMode(HiddenVisibility);
1434  else if (Vis == "protected")
1435    Opts.setVisibilityMode(ProtectedVisibility);
1436  else
1437    Diags.Report(diag::err_drv_invalid_value)
1438      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1439
1440  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1441    Opts.InlineVisibilityHidden = 1;
1442
1443  if (Args.hasArg(OPT_ftrapv)) {
1444    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1445    // Set the handler, if one is specified.
1446    Opts.OverflowHandler =
1447        Args.getLastArgValue(OPT_ftrapv_handler);
1448  }
1449  else if (Args.hasArg(OPT_fwrapv))
1450    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1451
1452  if (Args.hasArg(OPT_trigraphs))
1453    Opts.Trigraphs = 1;
1454
1455  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1456                                   OPT_fno_dollars_in_identifiers,
1457                                   Opts.DollarIdents);
1458  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1459  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1460  Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1461  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1462  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1463  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1464  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1465    Opts.LaxVectorConversions = 0;
1466  if (Args.hasArg(OPT_fno_threadsafe_statics))
1467    Opts.ThreadsafeStatics = 0;
1468  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1469  Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1470  Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1471  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1472  Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1473
1474  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1475  Opts.Blocks = Args.hasArg(OPT_fblocks);
1476  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1477  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1478  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1479  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1480  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1481  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1482  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1483  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1484  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1485  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1486  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1487                                               Diags);
1488  Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy,
1489                                                    0, Diags);
1490  Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1491  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1492  Opts.ObjCConstantStringClass =
1493    Args.getLastArgValue(OPT_fconstant_string_class);
1494  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1495  if (Opts.ObjCNonFragileABI)
1496    Opts.ObjCNonFragileABI2 = true;
1497  Opts.ObjCDefaultSynthProperties =
1498    Args.hasArg(OPT_fobjc_default_synthesize_properties);
1499  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1500  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1501  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1502  Opts.Static = Args.hasArg(OPT_static_define);
1503  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1504  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1505  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1506  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1507  Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1508  Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1509  Opts.OptimizeSize = 0;
1510  Opts.MRTD = Args.hasArg(OPT_mrtd);
1511  Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1512  Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1513
1514  // FIXME: Eliminate this dependency.
1515  unsigned Opt = getOptimizationLevel(Args, IK, Diags);
1516  Opts.Optimize = Opt != 0;
1517
1518  // This is the __NO_INLINE__ define, which just depends on things like the
1519  // optimization level and -fno-inline, not actually whether the backend has
1520  // inlining enabled.
1521  //
1522  // FIXME: This is affected by other options (-fno-inline).
1523  Opts.NoInline = !Opt;
1524
1525  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1526  switch (SSP) {
1527  default:
1528    Diags.Report(diag::err_drv_invalid_value)
1529      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1530    break;
1531  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1532  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1533  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1534  }
1535}
1536
1537static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1538                                  FileManager &FileMgr,
1539                                  Diagnostic &Diags) {
1540  using namespace cc1options;
1541  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1542  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1543  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1544      Opts.TokenCache = A->getValue(Args);
1545  else
1546    Opts.TokenCache = Opts.ImplicitPTHInclude;
1547  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1548  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1549  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1550
1551  Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1552  for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1553         ie = Args.filtered_end(); it != ie; ++it) {
1554    const Arg *A = *it;
1555    Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
1556  }
1557
1558  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1559    llvm::StringRef Value(A->getValue(Args));
1560    size_t Comma = Value.find(',');
1561    unsigned Bytes = 0;
1562    unsigned EndOfLine = 0;
1563
1564    if (Comma == llvm::StringRef::npos ||
1565        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1566        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1567      Diags.Report(diag::err_drv_preamble_format);
1568    else {
1569      Opts.PrecompiledPreambleBytes.first = Bytes;
1570      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1571    }
1572  }
1573
1574  // Add macros from the command line.
1575  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1576         ie = Args.filtered_end(); it != ie; ++it) {
1577    if ((*it)->getOption().matches(OPT_D))
1578      Opts.addMacroDef((*it)->getValue(Args));
1579    else
1580      Opts.addMacroUndef((*it)->getValue(Args));
1581  }
1582
1583  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1584
1585  // Add the ordered list of -includes.
1586  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1587                                             OPT_include_pth),
1588         ie = Args.filtered_end(); it != ie; ++it) {
1589    const Arg *A = *it;
1590    // PCH is handled specially, we need to extra the original include path.
1591    if (A->getOption().matches(OPT_include_pch)) {
1592      std::string OriginalFile =
1593        ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
1594      if (OriginalFile.empty())
1595        continue;
1596
1597      Opts.Includes.push_back(OriginalFile);
1598    } else
1599      Opts.Includes.push_back(A->getValue(Args));
1600  }
1601
1602  for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
1603         ie = Args.filtered_end(); it != ie; ++it) {
1604    const Arg *A = *it;
1605    Opts.ChainedIncludes.push_back(A->getValue(Args));
1606  }
1607
1608  // Include 'altivec.h' if -faltivec option present
1609  if (Args.hasArg(OPT_faltivec))
1610    Opts.Includes.push_back("altivec.h");
1611
1612  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1613         ie = Args.filtered_end(); it != ie; ++it) {
1614    const Arg *A = *it;
1615    std::pair<llvm::StringRef,llvm::StringRef> Split =
1616      llvm::StringRef(A->getValue(Args)).split(';');
1617
1618    if (Split.second.empty()) {
1619      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1620      continue;
1621    }
1622
1623    Opts.addRemappedFile(Split.first, Split.second);
1624  }
1625}
1626
1627static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1628                                        ArgList &Args) {
1629  using namespace cc1options;
1630  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1631  Opts.ShowComments = Args.hasArg(OPT_C);
1632  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1633  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1634  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1635}
1636
1637static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1638  using namespace cc1options;
1639  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1640  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1641  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1642  Opts.Features = Args.getAllArgValues(OPT_target_feature);
1643  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1644  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1645
1646  // Use the host triple if unspecified.
1647  if (Opts.Triple.empty())
1648    Opts.Triple = llvm::sys::getHostTriple();
1649}
1650
1651//
1652
1653void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1654                                        const char *const *ArgBegin,
1655                                        const char *const *ArgEnd,
1656                                        Diagnostic &Diags) {
1657  // Parse the arguments.
1658  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1659  unsigned MissingArgIndex, MissingArgCount;
1660  llvm::OwningPtr<InputArgList> Args(
1661    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1662
1663  // Check for missing argument error.
1664  if (MissingArgCount)
1665    Diags.Report(diag::err_drv_missing_argument)
1666      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1667
1668  // Issue errors on unknown arguments.
1669  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1670         ie = Args->filtered_end(); it != ie; ++it)
1671    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1672
1673  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1674  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1675  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1676  ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1677  // FIXME: We shouldn't have to pass the DashX option around here
1678  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1679  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags);
1680  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1681  if (DashX != IK_AST && DashX != IK_LLVM_IR) {
1682    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1683    if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
1684      Res.getLangOpts().ObjCExceptions = 1;
1685  }
1686  // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1687  // PCH file and find the original header name. Remove the need to do that in
1688  // ParsePreprocessorArgs and remove the FileManager
1689  // parameters from the function and the "FileManager.h" #include.
1690  FileManager FileMgr(Res.getFileSystemOpts());
1691  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1692  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1693  ParseTargetArgs(Res.getTargetOpts(), *Args);
1694}
1695