CompilerInvocation.cpp revision de981f3ff163bc9ec69e4c5e7316e94276412993 
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/Options.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
33//===----------------------------------------------------------------------===//
34// Initialization.
35//===----------------------------------------------------------------------===//
36
37CompilerInvocationBase::CompilerInvocationBase()
38  : LangOpts(new LangOptions()) {}
39
40CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
41  : RefCountedBase<CompilerInvocation>(),
42    LangOpts(new LangOptions(*X.getLangOpts())) {}
43
44//===----------------------------------------------------------------------===//
45// Utility functions.
46//===----------------------------------------------------------------------===//
47
48static const char *getAnalysisStoreName(AnalysisStores Kind) {
49  switch (Kind) {
50  default:
51    llvm_unreachable("Unknown analysis store!");
52#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
53  case NAME##Model: return CMDFLAG;
54#include "clang/Frontend/Analyses.def"
55  }
56}
57
58static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
59  switch (Kind) {
60  default:
61    llvm_unreachable("Unknown analysis constraints!");
62#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
63  case NAME##Model: return CMDFLAG;
64#include "clang/Frontend/Analyses.def"
65  }
66}
67
68static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
69  switch (Kind) {
70  default:
71    llvm_unreachable("Unknown analysis client!");
72#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
73  case PD_##NAME: return CMDFLAG;
74#include "clang/Frontend/Analyses.def"
75  }
76}
77
78static const char *getAnalysisPurgeModeName(AnalysisPurgeMode Kind) {
79  switch (Kind) {
80  default:
81    llvm_unreachable("Unknown analysis purge mode!");
82#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
83  case NAME: return CMDFLAG;
84#include "clang/Frontend/Analyses.def"
85  }
86}
87
88static const char *getAnalysisIPAModeName(AnalysisIPAMode Kind) {
89  switch (Kind) {
90  default:
91    llvm_unreachable("Unknown analysis ipa mode!");
92#define ANALYSIS_IPA(NAME, CMDFLAG, DESC) \
93  case NAME: return CMDFLAG;
94#include "clang/Frontend/Analyses.def"
95  }
96}
97
98static const char *
99  getAnalysisInliningModeName(AnalysisInliningMode Kind) {
100  switch (Kind) {
101  default:
102    llvm_unreachable("Unknown analysis inlining mode!");
103#define ANALYSIS_INLINE_SELECTION(NAME, CMDFLAG, DESC) \
104  case NAME: return CMDFLAG;
105#include "clang/Frontend/Analyses.def"
106  }
107}
108
109//===----------------------------------------------------------------------===//
110// Serialization (to args)
111//===----------------------------------------------------------------------===//
112
113namespace {
114  /// ToArgsList - Helper class to create a list of std::strings.
115  class ToArgsList {
116    std::vector<std::string> &Res;
117  public:
118    explicit ToArgsList(std::vector<std::string> &Res) : Res(Res) {}
119
120    void push_back(StringRef Str) {
121      // Avoid creating a temporary string.
122      Res.push_back(std::string());
123      Res.back().assign(Str.data(), Str.size());
124    }
125
126    void push_back(StringRef Str1, StringRef Str2) {
127      push_back(Str1);
128      push_back(Str2);
129    }
130  };
131}
132
133static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts, ToArgsList &Res) {
134  if (Opts.ShowCheckerHelp)
135    Res.push_back("-analyzer-checker-help");
136  if (Opts.AnalysisStoreOpt != RegionStoreModel)
137    Res.push_back("-analyzer-store",
138                  getAnalysisStoreName(Opts.AnalysisStoreOpt));
139  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel)
140    Res.push_back("-analyzer-constraints",
141                  getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
142  if (Opts.AnalysisDiagOpt != PD_HTML)
143    Res.push_back("-analyzer-output",
144                  getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
145  if (Opts.AnalysisPurgeOpt != PurgeStmt)
146    Res.push_back("-analyzer-purge",
147                  getAnalysisPurgeModeName(Opts.AnalysisPurgeOpt));
148  if (!Opts.AnalyzeSpecificFunction.empty())
149    Res.push_back("-analyze-function", Opts.AnalyzeSpecificFunction);
150  if (Opts.IPAMode != Inlining)
151    Res.push_back("-analyzer-ipa", getAnalysisIPAModeName(Opts.IPAMode));
152  if (Opts.InliningMode != NoRedundancy)
153    Res.push_back("-analyzer-inlining-mode",
154                  getAnalysisInliningModeName(Opts.InliningMode));
155
156  if (Opts.AnalyzeAll)
157    Res.push_back("-analyzer-opt-analyze-headers");
158  if (Opts.AnalyzerDisplayProgress)
159    Res.push_back("-analyzer-display-progress");
160  if (Opts.AnalyzeNestedBlocks)
161    Res.push_back("-analyzer-opt-analyze-nested-blocks");
162  if (Opts.EagerlyAssume)
163    Res.push_back("-analyzer-eagerly-assume");
164  if (Opts.TrimGraph)
165    Res.push_back("-trim-egraph");
166  if (Opts.VisualizeEGDot)
167    Res.push_back("-analyzer-viz-egraph-graphviz");
168  if (Opts.VisualizeEGUbi)
169    Res.push_back("-analyzer-viz-egraph-ubigraph");
170  if (Opts.NoRetryExhausted)
171    Res.push_back("-analyzer-disable-retry-exhausted");
172
173  for (unsigned i = 0, e = Opts.CheckersControlList.size(); i != e; ++i) {
174    const std::pair<std::string, bool> &opt = Opts.CheckersControlList[i];
175    if (opt.second)
176      Res.push_back("-analyzer-disable-checker");
177    else
178      Res.push_back("-analyzer-checker");
179    Res.push_back(opt.first);
180  }
181}
182
183static void CodeGenOptsToArgs(const CodeGenOptions &Opts, ToArgsList &Res) {
184  switch (Opts.DebugInfo) {
185    case CodeGenOptions::NoDebugInfo:
186      break;
187    case CodeGenOptions::DebugLineTablesOnly:
188      Res.push_back("-gline-tables-only");
189      break;
190    case CodeGenOptions::LimitedDebugInfo:
191      Res.push_back("-g");
192      Res.push_back("-flimit-debug-info");
193      break;
194    case CodeGenOptions::FullDebugInfo:
195      Res.push_back("-g");
196      Res.push_back("-fno-limit-debug-info");
197      break;
198  }
199  if (Opts.DisableLLVMOpts)
200    Res.push_back("-disable-llvm-optzns");
201  if (Opts.DisableRedZone)
202    Res.push_back("-disable-red-zone");
203  if (Opts.DisableTailCalls)
204    Res.push_back("-mdisable-tail-calls");
205  if (!Opts.DebugCompilationDir.empty())
206    Res.push_back("-fdebug-compilation-dir", Opts.DebugCompilationDir);
207  if (!Opts.DwarfDebugFlags.empty())
208    Res.push_back("-dwarf-debug-flags", Opts.DwarfDebugFlags);
209  if (Opts.EmitGcovArcs)
210    Res.push_back("-femit-coverage-data");
211  if (Opts.EmitGcovNotes)
212    Res.push_back("-femit-coverage-notes");
213  if (!Opts.MergeAllConstants)
214    Res.push_back("-fno-merge-all-constants");
215  if (Opts.NoCommon)
216    Res.push_back("-fno-common");
217  if (Opts.ForbidGuardVariables)
218    Res.push_back("-fforbid-guard-variables");
219  if (Opts.UseRegisterSizedBitfieldAccess)
220    Res.push_back("-fuse-register-sized-bitfield-access");
221  if (Opts.NoImplicitFloat)
222    Res.push_back("-no-implicit-float");
223  if (Opts.OmitLeafFramePointer)
224    Res.push_back("-momit-leaf-frame-pointer");
225  if (Opts.OptimizeSize) {
226    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
227    Opts.OptimizeSize == 1 ? Res.push_back("-Os") : Res.push_back("-Oz");
228  } else if (Opts.OptimizationLevel != 0)
229    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
230  if (!Opts.MainFileName.empty())
231    Res.push_back("-main-file-name", Opts.MainFileName);
232  if (Opts.NoInfsFPMath)
233    Res.push_back("-menable-no-infinities");
234  if (Opts.NoNaNsFPMath)
235    Res.push_back("-menable-no-nans");
236  // SimplifyLibCalls is only derived.
237  // TimePasses is only derived.
238  // UnitAtATime is unused.
239  // Inlining is only derived.
240
241  // UnrollLoops is derived, but also accepts an option, no
242  // harm in pushing it back here.
243  if (Opts.UnrollLoops)
244    Res.push_back("-funroll-loops");
245  if (Opts.DataSections)
246    Res.push_back("-fdata-sections");
247  if (Opts.FunctionSections)
248    Res.push_back("-ffunction-sections");
249  if (Opts.AsmVerbose)
250    Res.push_back("-masm-verbose");
251  if (!Opts.CodeModel.empty())
252    Res.push_back("-mcode-model", Opts.CodeModel);
253  if (Opts.CUDAIsDevice)
254    Res.push_back("-fcuda-is-device");
255  if (!Opts.CXAAtExit)
256    Res.push_back("-fno-use-cxa-atexit");
257  if (Opts.CXXCtorDtorAliases)
258    Res.push_back("-mconstructor-aliases");
259  if (Opts.ObjCAutoRefCountExceptions)
260    Res.push_back("-fobjc-arc-eh");
261  if (!Opts.DebugPass.empty()) {
262    Res.push_back("-mdebug-pass", Opts.DebugPass);
263  }
264  if (Opts.DisableFPElim)
265    Res.push_back("-mdisable-fp-elim");
266  if (!Opts.FloatABI.empty())
267    Res.push_back("-mfloat-abi", Opts.FloatABI);
268  if (!Opts.LimitFloatPrecision.empty())
269    Res.push_back("-mlimit-float-precision", Opts.LimitFloatPrecision);
270  if (Opts.NoZeroInitializedInBSS)
271    Res.push_back("-mno-zero-initialized-bss");
272  switch (Opts.getObjCDispatchMethod()) {
273  case CodeGenOptions::Legacy:
274    break;
275  case CodeGenOptions::Mixed:
276    Res.push_back("-fobjc-dispatch-method=mixed");
277    break;
278  case CodeGenOptions::NonLegacy:
279    Res.push_back("-fobjc-dispatch-method=non-legacy");
280    break;
281  }
282  if (Opts.BoundsChecking > 0)
283    Res.push_back("-fbounds-checking=" + llvm::utostr(Opts.BoundsChecking));
284  if (Opts.NumRegisterParameters)
285    Res.push_back("-mregparm", llvm::utostr(Opts.NumRegisterParameters));
286  if (Opts.NoGlobalMerge)
287    Res.push_back("-mno-global-merge");
288  if (Opts.NoExecStack)
289    Res.push_back("-mnoexecstack");
290  if (Opts.RelaxAll)
291    Res.push_back("-mrelax-all");
292  if (Opts.SaveTempLabels)
293    Res.push_back("-msave-temp-labels");
294  if (Opts.NoDwarf2CFIAsm)
295    Res.push_back("-fno-dwarf2-cfi-asm");
296  if (Opts.NoDwarfDirectoryAsm)
297    Res.push_back("-fno-dwarf-directory-asm");
298  if (Opts.SoftFloat)
299    Res.push_back("-msoft-float");
300  if (Opts.StrictEnums)
301    Res.push_back("-fstrict-enums");
302  if (Opts.UnwindTables)
303    Res.push_back("-munwind-tables");
304  if (Opts.RelocationModel != "pic")
305    Res.push_back("-mrelocation-model", Opts.RelocationModel);
306  if (!Opts.VerifyModule)
307    Res.push_back("-disable-llvm-verifier");
308  for (unsigned i = 0, e = Opts.BackendOptions.size(); i != e; ++i)
309    Res.push_back("-backend-option", Opts.BackendOptions[i]);
310
311  switch (Opts.DefaultTLSModel) {
312  case CodeGenOptions::GeneralDynamicTLSModel:
313    break;
314  case CodeGenOptions::LocalDynamicTLSModel:
315    Res.push_back("-ftls-model=local-dynamic");
316    break;
317  case CodeGenOptions::InitialExecTLSModel:
318    Res.push_back("-ftls-model=initial-exec");
319    break;
320  case CodeGenOptions::LocalExecTLSModel:
321    Res.push_back("-ftls-model=local-exec");
322    break;
323  }
324}
325
326static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
327                                       ToArgsList &Res) {
328  if (Opts.IncludeSystemHeaders)
329    Res.push_back("-sys-header-deps");
330  if (Opts.ShowHeaderIncludes)
331    Res.push_back("-H");
332  if (!Opts.HeaderIncludeOutputFile.empty())
333    Res.push_back("-header-include-file", Opts.HeaderIncludeOutputFile);
334  if (Opts.UsePhonyTargets)
335    Res.push_back("-MP");
336  if (!Opts.OutputFile.empty())
337    Res.push_back("-dependency-file", Opts.OutputFile);
338  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i)
339    Res.push_back("-MT", Opts.Targets[i]);
340}
341
342static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
343                                 ToArgsList &Res) {
344  if (Opts.IgnoreWarnings)
345    Res.push_back("-w");
346  if (Opts.NoRewriteMacros)
347    Res.push_back("-Wno-rewrite-macros");
348  if (Opts.Pedantic)
349    Res.push_back("-pedantic");
350  if (Opts.PedanticErrors)
351    Res.push_back("-pedantic-errors");
352  if (!Opts.ShowColumn)
353    Res.push_back("-fno-show-column");
354  if (!Opts.ShowLocation)
355    Res.push_back("-fno-show-source-location");
356  if (!Opts.ShowCarets)
357    Res.push_back("-fno-caret-diagnostics");
358  if (!Opts.ShowFixits)
359    Res.push_back("-fno-diagnostics-fixit-info");
360  if (Opts.ShowSourceRanges)
361    Res.push_back("-fdiagnostics-print-source-range-info");
362  if (Opts.ShowParseableFixits)
363    Res.push_back("-fdiagnostics-parseable-fixits");
364  if (Opts.ShowColors)
365    Res.push_back("-fcolor-diagnostics");
366  if (Opts.VerifyDiagnostics)
367    Res.push_back("-verify");
368  if (Opts.ShowOptionNames)
369    Res.push_back("-fdiagnostics-show-option");
370  if (Opts.ShowCategories == 1)
371    Res.push_back("-fdiagnostics-show-category=id");
372  else if (Opts.ShowCategories == 2)
373    Res.push_back("-fdiagnostics-show-category=name");
374  switch (Opts.Format) {
375  case DiagnosticOptions::Clang:
376    Res.push_back("-fdiagnostics-format=clang"); break;
377  case DiagnosticOptions::Msvc:
378    Res.push_back("-fdiagnostics-format=msvc");  break;
379  case DiagnosticOptions::Vi:
380    Res.push_back("-fdiagnostics-format=vi");    break;
381  }
382  if (Opts.ErrorLimit)
383    Res.push_back("-ferror-limit", llvm::utostr(Opts.ErrorLimit));
384  if (!Opts.DiagnosticLogFile.empty())
385    Res.push_back("-diagnostic-log-file", Opts.DiagnosticLogFile);
386  if (Opts.MacroBacktraceLimit
387                        != DiagnosticOptions::DefaultMacroBacktraceLimit)
388    Res.push_back("-fmacro-backtrace-limit",
389                  llvm::utostr(Opts.MacroBacktraceLimit));
390  if (Opts.TemplateBacktraceLimit
391                        != DiagnosticOptions::DefaultTemplateBacktraceLimit)
392    Res.push_back("-ftemplate-backtrace-limit",
393                  llvm::utostr(Opts.TemplateBacktraceLimit));
394  if (Opts.ConstexprBacktraceLimit
395                        != DiagnosticOptions::DefaultConstexprBacktraceLimit)
396    Res.push_back("-fconstexpr-backtrace-limit",
397                  llvm::utostr(Opts.ConstexprBacktraceLimit));
398
399  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop)
400    Res.push_back("-ftabstop", llvm::utostr(Opts.TabStop));
401  if (Opts.MessageLength)
402    Res.push_back("-fmessage-length", llvm::utostr(Opts.MessageLength));
403  if (!Opts.DumpBuildInformation.empty())
404    Res.push_back("-dump-build-information", Opts.DumpBuildInformation);
405  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
406    Res.push_back("-W" + Opts.Warnings[i]);
407}
408
409static const char *getInputKindName(InputKind Kind) {
410  switch (Kind) {
411  case IK_None:              break;
412  case IK_AST:               return "ast";
413  case IK_Asm:               return "assembler-with-cpp";
414  case IK_C:                 return "c";
415  case IK_CXX:               return "c++";
416  case IK_LLVM_IR:           return "ir";
417  case IK_ObjC:              return "objective-c";
418  case IK_ObjCXX:            return "objective-c++";
419  case IK_OpenCL:            return "cl";
420  case IK_CUDA:              return "cuda";
421  case IK_PreprocessedC:     return "cpp-output";
422  case IK_PreprocessedCXX:   return "c++-cpp-output";
423  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
424  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
425  }
426
427  llvm_unreachable("Unexpected language kind!");
428}
429
430static const char *getActionName(frontend::ActionKind Kind) {
431  switch (Kind) {
432  case frontend::PluginAction:
433    llvm_unreachable("Invalid kind!");
434
435  case frontend::ASTDump:                return "-ast-dump";
436  case frontend::ASTDumpXML:             return "-ast-dump-xml";
437  case frontend::ASTPrint:               return "-ast-print";
438  case frontend::ASTView:                return "-ast-view";
439  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
440  case frontend::DumpTokens:             return "-dump-tokens";
441  case frontend::EmitAssembly:           return "-S";
442  case frontend::EmitBC:                 return "-emit-llvm-bc";
443  case frontend::EmitHTML:               return "-emit-html";
444  case frontend::EmitLLVM:               return "-emit-llvm";
445  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
446  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
447  case frontend::EmitObj:                return "-emit-obj";
448  case frontend::FixIt:                  return "-fixit";
449  case frontend::GenerateModule:         return "-emit-module";
450  case frontend::GeneratePCH:            return "-emit-pch";
451  case frontend::GeneratePTH:            return "-emit-pth";
452  case frontend::InitOnly:               return "-init-only";
453  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
454  case frontend::PrintDeclContext:       return "-print-decl-contexts";
455  case frontend::PrintPreamble:          return "-print-preamble";
456  case frontend::PrintPreprocessedInput: return "-E";
457  case frontend::RewriteMacros:          return "-rewrite-macros";
458  case frontend::RewriteObjC:            return "-rewrite-objc";
459  case frontend::RewriteTest:            return "-rewrite-test";
460  case frontend::RunAnalysis:            return "-analyze";
461  case frontend::MigrateSource:          return "-migrate";
462  case frontend::RunPreprocessorOnly:    return "-Eonly";
463  }
464
465  llvm_unreachable("Unexpected language kind!");
466}
467
468static void FileSystemOptsToArgs(const FileSystemOptions &Opts, ToArgsList &Res){
469  if (!Opts.WorkingDir.empty())
470    Res.push_back("-working-directory", Opts.WorkingDir);
471}
472
473static void FrontendOptsToArgs(const FrontendOptions &Opts, ToArgsList &Res) {
474  if (Opts.DisableFree)
475    Res.push_back("-disable-free");
476  if (Opts.RelocatablePCH)
477    Res.push_back("-relocatable-pch");
478  if (Opts.ShowHelp)
479    Res.push_back("-help");
480  if (Opts.ShowMacrosInCodeCompletion)
481    Res.push_back("-code-completion-macros");
482  if (Opts.ShowCodePatternsInCodeCompletion)
483    Res.push_back("-code-completion-patterns");
484  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
485    Res.push_back("-no-code-completion-globals");
486  if (Opts.ShowStats)
487    Res.push_back("-print-stats");
488  if (Opts.ShowTimers)
489    Res.push_back("-ftime-report");
490  if (Opts.ShowVersion)
491    Res.push_back("-version");
492  if (Opts.FixWhatYouCan)
493    Res.push_back("-fix-what-you-can");
494  if (Opts.FixOnlyWarnings)
495    Res.push_back("-fix-only-warnings");
496  if (Opts.FixAndRecompile)
497    Res.push_back("-fixit-recompile");
498  if (Opts.FixToTemporaries)
499    Res.push_back("-fixit-to-temporary");
500  switch (Opts.ARCMTAction) {
501  case FrontendOptions::ARCMT_None:
502    break;
503  case FrontendOptions::ARCMT_Check:
504    Res.push_back("-arcmt-check");
505    break;
506  case FrontendOptions::ARCMT_Modify:
507    Res.push_back("-arcmt-modify");
508    break;
509  case FrontendOptions::ARCMT_Migrate:
510    Res.push_back("-arcmt-migrate");
511    break;
512  }
513  if (!Opts.MTMigrateDir.empty())
514    Res.push_back("-mt-migrate-directory", Opts.MTMigrateDir);
515  if (!Opts.ARCMTMigrateReportOut.empty())
516    Res.push_back("-arcmt-migrate-report-output", Opts.ARCMTMigrateReportOut);
517  if (Opts.ARCMTMigrateEmitARCErrors)
518    Res.push_back("-arcmt-migrate-emit-errors");
519
520  if (Opts.ObjCMTAction & ~FrontendOptions::ObjCMT_Literals)
521    Res.push_back("-objcmt-migrate-literals");
522  if (Opts.ObjCMTAction & ~FrontendOptions::ObjCMT_Subscripting)
523    Res.push_back("-objcmt-migrate-subscripting");
524
525  bool NeedLang = false;
526  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
527    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].File) !=
528        Opts.Inputs[i].Kind)
529      NeedLang = true;
530  if (NeedLang)
531    Res.push_back("-x", getInputKindName(Opts.Inputs[0].Kind));
532  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
533    assert((!NeedLang || Opts.Inputs[i].Kind == Opts.Inputs[0].Kind) &&
534           "Unable to represent this input vector!");
535    Res.push_back(Opts.Inputs[i].File);
536  }
537
538  if (!Opts.OutputFile.empty())
539    Res.push_back("-o", Opts.OutputFile);
540  if (!Opts.CodeCompletionAt.FileName.empty())
541    Res.push_back("-code-completion-at",
542                  Opts.CodeCompletionAt.FileName + ":" +
543                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
544                  llvm::utostr(Opts.CodeCompletionAt.Column));
545  if (Opts.ProgramAction != frontend::PluginAction)
546    Res.push_back(getActionName(Opts.ProgramAction));
547  if (!Opts.ActionName.empty()) {
548    Res.push_back("-plugin", Opts.ActionName);
549    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i)
550      Res.push_back("-plugin-arg-" + Opts.ActionName, Opts.PluginArgs[i]);
551  }
552  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i)
553    Res.push_back("-load", Opts.Plugins[i]);
554  for (unsigned i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
555    Res.push_back("-add-plugin", Opts.AddPluginActions[i]);
556    for(unsigned ai = 0, ae = Opts.AddPluginArgs.size(); ai != ae; ++ai)
557      Res.push_back("-plugin-arg-" + Opts.AddPluginActions[i],
558                    Opts.AddPluginArgs[i][ai]);
559  }
560  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i)
561    Res.push_back("-ast-merge", Opts.ASTMergeFiles[i]);
562  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i)
563    Res.push_back("-mllvm", Opts.LLVMArgs[i]);
564  if (!Opts.OverrideRecordLayoutsFile.empty())
565    Res.push_back("-foverride-record-layout=" + Opts.OverrideRecordLayoutsFile);
566}
567
568static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
569                                   ToArgsList &Res) {
570  if (Opts.Sysroot != "/") {
571    Res.push_back("-isysroot");
572    Res.push_back(Opts.Sysroot);
573  }
574
575  /// User specified include entries.
576  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
577    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
578    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
579      llvm::report_fatal_error("Invalid option set!");
580    if (E.IsUserSupplied) {
581      switch (E.Group) {
582      case frontend::After:
583        Res.push_back("-idirafter");
584        break;
585
586      case frontend::Quoted:
587        Res.push_back("-iquote");
588        break;
589
590      case frontend::System:
591        Res.push_back("-isystem");
592        break;
593
594      case frontend::IndexHeaderMap:
595        Res.push_back("-index-header-map");
596        Res.push_back(E.IsFramework? "-F" : "-I");
597        break;
598
599      case frontend::CSystem:
600        Res.push_back("-c-isystem");
601        break;
602
603      case frontend::CXXSystem:
604        Res.push_back("-cxx-isystem");
605        break;
606
607      case frontend::ObjCSystem:
608        Res.push_back("-objc-isystem");
609        break;
610
611      case frontend::ObjCXXSystem:
612        Res.push_back("-objcxx-isystem");
613        break;
614
615      case frontend::Angled:
616        Res.push_back(E.IsFramework ? "-F" : "-I");
617        break;
618      }
619    } else {
620      if (E.IsInternal) {
621        assert(E.Group == frontend::System && "Unexpected header search group");
622        if (E.ImplicitExternC)
623          Res.push_back("-internal-externc-isystem");
624        else
625          Res.push_back("-internal-isystem");
626      } else {
627        if (E.Group != frontend::Angled && E.Group != frontend::System)
628          llvm::report_fatal_error("Invalid option set!");
629        Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
630                      "-iwithprefix");
631      }
632    }
633    Res.push_back(E.Path);
634  }
635
636  /// User-specified system header prefixes.
637  for (unsigned i = 0, e = Opts.SystemHeaderPrefixes.size(); i != e; ++i) {
638    if (Opts.SystemHeaderPrefixes[i].IsSystemHeader)
639      Res.push_back("-isystem-prefix");
640    else
641      Res.push_back("-ino-system-prefix");
642
643    Res.push_back(Opts.SystemHeaderPrefixes[i].Prefix);
644  }
645
646  if (!Opts.ResourceDir.empty())
647    Res.push_back("-resource-dir", Opts.ResourceDir);
648  if (!Opts.ModuleCachePath.empty())
649    Res.push_back("-fmodule-cache-path", Opts.ModuleCachePath);
650  if (!Opts.UseStandardSystemIncludes)
651    Res.push_back("-nostdsysteminc");
652  if (!Opts.UseStandardCXXIncludes)
653    Res.push_back("-nostdinc++");
654  if (Opts.UseLibcxx)
655    Res.push_back("-stdlib=libc++");
656  if (Opts.Verbose)
657    Res.push_back("-v");
658}
659
660static void LangOptsToArgs(const LangOptions &Opts, ToArgsList &Res) {
661  LangOptions DefaultLangOpts;
662
663  // FIXME: Need to set -std to get all the implicit options.
664
665  // FIXME: We want to only pass options relative to the defaults, which
666  // requires constructing a target. :(
667  //
668  // It would be better to push the all target specific choices into the driver,
669  // so that everything below that was more uniform.
670
671  if (Opts.Trigraphs)
672    Res.push_back("-trigraphs");
673  // Implicit based on the input kind:
674  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
675  // Implicit based on the input language standard:
676  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
677  if (Opts.DollarIdents)
678    Res.push_back("-fdollars-in-identifiers");
679  if (Opts.GNUMode && !Opts.GNUKeywords)
680    Res.push_back("-fno-gnu-keywords");
681  if (!Opts.GNUMode && Opts.GNUKeywords)
682    Res.push_back("-fgnu-keywords");
683  if (Opts.MicrosoftExt)
684    Res.push_back("-fms-extensions");
685  if (Opts.MicrosoftMode)
686    Res.push_back("-fms-compatibility");
687  if (Opts.MSCVersion != 0)
688    Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
689  if (Opts.Borland)
690    Res.push_back("-fborland-extensions");
691  if (Opts.ObjCDefaultSynthProperties)
692    Res.push_back("-fobjc-default-synthesize-properties");
693  // NoInline is implicit.
694  if (!Opts.CXXOperatorNames)
695    Res.push_back("-fno-operator-names");
696  if (Opts.PascalStrings)
697    Res.push_back("-fpascal-strings");
698  if (Opts.CatchUndefined)
699    Res.push_back("-fcatch-undefined-behavior");
700  if (Opts.AddressSanitizer)
701    Res.push_back("-faddress-sanitizer");
702  if (Opts.ThreadSanitizer)
703    Res.push_back("-fthread-sanitizer");
704  if (Opts.WritableStrings)
705    Res.push_back("-fwritable-strings");
706  if (Opts.ConstStrings)
707    Res.push_back("-fconst-strings");
708  if (!Opts.LaxVectorConversions)
709    Res.push_back("-fno-lax-vector-conversions");
710  if (Opts.AltiVec)
711    Res.push_back("-faltivec");
712  if (Opts.Exceptions)
713    Res.push_back("-fexceptions");
714  if (Opts.ObjCExceptions)
715    Res.push_back("-fobjc-exceptions");
716  if (Opts.CXXExceptions)
717    Res.push_back("-fcxx-exceptions");
718  if (Opts.SjLjExceptions)
719    Res.push_back("-fsjlj-exceptions");
720  if (Opts.TraditionalCPP)
721    Res.push_back("-traditional-cpp");
722  if (!Opts.RTTI)
723    Res.push_back("-fno-rtti");
724  if (Opts.MSBitfields)
725    Res.push_back("-mms-bitfields");
726  if (Opts.Freestanding)
727    Res.push_back("-ffreestanding");
728  if (Opts.NoBuiltin)
729    Res.push_back("-fno-builtin");
730  if (!Opts.AssumeSaneOperatorNew)
731    Res.push_back("-fno-assume-sane-operator-new");
732  if (!Opts.ThreadsafeStatics)
733    Res.push_back("-fno-threadsafe-statics");
734  if (Opts.POSIXThreads)
735    Res.push_back("-pthread");
736  if (Opts.Blocks)
737    Res.push_back("-fblocks");
738  if (Opts.BlocksRuntimeOptional)
739    Res.push_back("-fblocks-runtime-optional");
740  if (Opts.Modules)
741    Res.push_back("-fmodules");
742  if (Opts.EmitAllDecls)
743    Res.push_back("-femit-all-decls");
744  if (Opts.MathErrno)
745    Res.push_back("-fmath-errno");
746  switch (Opts.getSignedOverflowBehavior()) {
747  case LangOptions::SOB_Undefined: break;
748  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
749  case LangOptions::SOB_Trapping:
750    Res.push_back("-ftrapv");
751    if (!Opts.OverflowHandler.empty())
752      Res.push_back("-ftrapv-handler", Opts.OverflowHandler);
753    break;
754  }
755  if (Opts.HeinousExtensions)
756    Res.push_back("-fheinous-gnu-extensions");
757  // Optimize is implicit.
758  // OptimizeSize is implicit.
759  if (Opts.FastMath)
760    Res.push_back("-ffast-math");
761  if (Opts.Static)
762    Res.push_back("-static-define");
763  if (Opts.DumpRecordLayoutsSimple)
764    Res.push_back("-fdump-record-layouts-simple");
765  else if (Opts.DumpRecordLayouts)
766    Res.push_back("-fdump-record-layouts");
767  if (Opts.DumpVTableLayouts)
768    Res.push_back("-fdump-vtable-layouts");
769  if (Opts.NoBitFieldTypeAlign)
770    Res.push_back("-fno-bitfield-type-alignment");
771  if (Opts.PICLevel)
772    Res.push_back("-pic-level", llvm::utostr(Opts.PICLevel));
773  if (Opts.PIELevel)
774    Res.push_back("-pie-level", llvm::utostr(Opts.PIELevel));
775  if (Opts.ObjCGCBitmapPrint)
776    Res.push_back("-print-ivar-layout");
777  if (Opts.NoConstantCFStrings)
778    Res.push_back("-fno-constant-cfstrings");
779  if (!Opts.AccessControl)
780    Res.push_back("-fno-access-control");
781  if (!Opts.CharIsSigned)
782    Res.push_back("-fno-signed-char");
783  if (Opts.ShortWChar)
784    Res.push_back("-fshort-wchar");
785  if (!Opts.ElideConstructors)
786    Res.push_back("-fno-elide-constructors");
787  if (Opts.getGC() != LangOptions::NonGC) {
788    if (Opts.getGC() == LangOptions::HybridGC) {
789      Res.push_back("-fobjc-gc");
790    } else {
791      assert(Opts.getGC() == LangOptions::GCOnly && "Invalid GC mode!");
792      Res.push_back("-fobjc-gc-only");
793    }
794  }
795  Res.push_back("-fobjc-runtime=" + Opts.ObjCRuntime.getAsString());
796  if (Opts.ObjCAutoRefCount)
797    Res.push_back("-fobjc-arc");
798  if (Opts.ObjCRuntimeHasWeak)
799    Res.push_back("-fobjc-runtime-has-weak");
800  if (!Opts.ObjCInferRelatedResultType)
801    Res.push_back("-fno-objc-infer-related-result-type");
802
803  if (Opts.AppleKext)
804    Res.push_back("-fapple-kext");
805
806  if (Opts.getVisibilityMode() != DefaultVisibility) {
807    Res.push_back("-fvisibility");
808    if (Opts.getVisibilityMode() == HiddenVisibility) {
809      Res.push_back("hidden");
810    } else {
811      assert(Opts.getVisibilityMode() == ProtectedVisibility &&
812             "Invalid visibility!");
813      Res.push_back("protected");
814    }
815  }
816  if (Opts.InlineVisibilityHidden)
817    Res.push_back("-fvisibility-inlines-hidden");
818
819  if (Opts.getStackProtector() != 0)
820    Res.push_back("-stack-protector", llvm::utostr(Opts.getStackProtector()));
821  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth)
822    Res.push_back("-ftemplate-depth", llvm::utostr(Opts.InstantiationDepth));
823  if (Opts.ConstexprCallDepth != DefaultLangOpts.ConstexprCallDepth)
824    Res.push_back("-fconstexpr-depth", llvm::utostr(Opts.ConstexprCallDepth));
825  if (!Opts.ObjCConstantStringClass.empty())
826    Res.push_back("-fconstant-string-class", Opts.ObjCConstantStringClass);
827  if (Opts.FakeAddressSpaceMap)
828    Res.push_back("-ffake-address-space-map");
829  if (Opts.ParseUnknownAnytype)
830    Res.push_back("-funknown-anytype");
831  if (Opts.DebuggerSupport)
832    Res.push_back("-fdebugger-support");
833  if (Opts.DebuggerCastResultToId)
834    Res.push_back("-fdebugger-cast-result-to-id");
835  if (Opts.DebuggerObjCLiteral)
836    Res.push_back("-fdebugger-objc-literal");
837  if (Opts.DelayedTemplateParsing)
838    Res.push_back("-fdelayed-template-parsing");
839  if (Opts.Deprecated)
840    Res.push_back("-fdeprecated-macro");
841  if (Opts.ApplePragmaPack)
842    Res.push_back("-fapple-pragma-pack");
843  if (!Opts.CurrentModule.empty())
844    Res.push_back("-fmodule-name=" + Opts.CurrentModule);
845}
846
847static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
848                                   ToArgsList &Res) {
849  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
850    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
851                  Opts.Macros[i].first);
852  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
853    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
854    Res.push_back("-include", Opts.Includes[i]);
855  }
856  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i)
857    Res.push_back("-imacros", Opts.MacroIncludes[i]);
858  if (!Opts.UsePredefines)
859    Res.push_back("-undef");
860  if (Opts.DetailedRecord)
861    Res.push_back("-detailed-preprocessing-record");
862  if (!Opts.ImplicitPCHInclude.empty())
863    Res.push_back("-include-pch", Opts.ImplicitPCHInclude);
864  if (!Opts.ImplicitPTHInclude.empty())
865    Res.push_back("-include-pth", Opts.ImplicitPTHInclude);
866  if (!Opts.TokenCache.empty()) {
867    if (Opts.ImplicitPTHInclude.empty())
868      Res.push_back("-token-cache", Opts.TokenCache);
869    else
870      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
871             "Unsupported option combination!");
872  }
873  for (unsigned i = 0, e = Opts.ChainedIncludes.size(); i != e; ++i)
874    Res.push_back("-chain-include", Opts.ChainedIncludes[i]);
875  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
876    Res.push_back("-remap-file", Opts.RemappedFiles[i].first + ";" +
877                                 Opts.RemappedFiles[i].second);
878  }
879}
880
881static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
882                                         ToArgsList &Res) {
883  if (!Opts.ShowCPP && !Opts.ShowMacros)
884    llvm::report_fatal_error("Invalid option combination!");
885
886  if (Opts.ShowCPP && Opts.ShowMacros)
887    Res.push_back("-dD");
888  else if (!Opts.ShowCPP && Opts.ShowMacros)
889    Res.push_back("-dM");
890
891  if (!Opts.ShowLineMarkers)
892    Res.push_back("-P");
893  if (Opts.ShowComments)
894    Res.push_back("-C");
895  if (Opts.ShowMacroComments)
896    Res.push_back("-CC");
897}
898
899static void TargetOptsToArgs(const TargetOptions &Opts,
900                             ToArgsList &Res) {
901  Res.push_back("-triple");
902  Res.push_back(Opts.Triple);
903  if (!Opts.CPU.empty())
904    Res.push_back("-target-cpu", Opts.CPU);
905  if (!Opts.ABI.empty())
906    Res.push_back("-target-abi", Opts.ABI);
907  if (!Opts.LinkerVersion.empty())
908    Res.push_back("-target-linker-version", Opts.LinkerVersion);
909  if (!Opts.CXXABI.empty())
910    Res.push_back("-cxx-abi", Opts.CXXABI);
911  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i)
912    Res.push_back("-target-feature", Opts.Features[i]);
913}
914
915void CompilerInvocation::toArgs(std::vector<std::string> &Res) const {
916  ToArgsList List(Res);
917  AnalyzerOptsToArgs(getAnalyzerOpts(), List);
918  CodeGenOptsToArgs(getCodeGenOpts(), List);
919  DependencyOutputOptsToArgs(getDependencyOutputOpts(), List);
920  DiagnosticOptsToArgs(getDiagnosticOpts(), List);
921  FileSystemOptsToArgs(getFileSystemOpts(), List);
922  FrontendOptsToArgs(getFrontendOpts(), List);
923  HeaderSearchOptsToArgs(getHeaderSearchOpts(), List);
924  LangOptsToArgs(*getLangOpts(), List);
925  PreprocessorOptsToArgs(getPreprocessorOpts(), List);
926  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), List);
927  TargetOptsToArgs(getTargetOpts(), List);
928}
929
930//===----------------------------------------------------------------------===//
931// Deserialization (to args)
932//===----------------------------------------------------------------------===//
933
934using namespace clang::driver;
935using namespace clang::driver::options;
936
937//
938
939static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
940                                     DiagnosticsEngine &Diags) {
941  unsigned DefaultOpt = 0;
942  if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
943    DefaultOpt = 2;
944
945  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
946    if (A->getOption().matches(options::OPT_O0))
947      return 0;
948
949    assert (A->getOption().matches(options::OPT_O));
950
951    llvm::StringRef S(A->getValue(Args));
952    if (S == "s" || S == "z" || S.empty())
953      return 2;
954
955    return Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
956  }
957
958  return DefaultOpt;
959}
960
961static unsigned getOptimizationLevelSize(ArgList &Args, InputKind IK,
962                                         DiagnosticsEngine &Diags) {
963  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
964    if (A->getOption().matches(options::OPT_O)) {
965      switch (A->getValue(Args)[0]) {
966      default:
967        return 0;
968      case 's':
969        return 1;
970      case 'z':
971        return 2;
972      }
973    }
974  }
975  return 0;
976}
977
978static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) {
979  for (arg_iterator I = Args.filtered_begin(OPT_W_Group),
980         E = Args.filtered_end(); I != E; ++I) {
981    Arg *A = *I;
982    // If the argument is a pure flag, add its name (minus the "-W" at the beginning)
983    // to the warning list. Else, add its value (for the OPT_W case).
984    if (A->getOption().getKind() == Option::FlagClass) {
985      Warnings.push_back(A->getOption().getName().substr(2));
986    } else {
987      for (unsigned Idx = 0, End = A->getNumValues();
988           Idx < End; ++Idx) {
989        StringRef V = A->getValue(Args, Idx);
990        // "-Wl," and such are not warning options.
991        // FIXME: Should be handled by putting these in separate flags.
992        if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,"))
993          continue;
994
995        Warnings.push_back(V);
996      }
997    }
998  }
999}
1000
1001static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
1002                              DiagnosticsEngine &Diags) {
1003  using namespace options;
1004  bool Success = true;
1005  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
1006    StringRef Name = A->getValue(Args);
1007    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
1008#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
1009      .Case(CMDFLAG, NAME##Model)
1010#include "clang/Frontend/Analyses.def"
1011      .Default(NumStores);
1012    if (Value == NumStores) {
1013      Diags.Report(diag::err_drv_invalid_value)
1014        << A->getAsString(Args) << Name;
1015      Success = false;
1016    } else {
1017      Opts.AnalysisStoreOpt = Value;
1018    }
1019  }
1020
1021  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
1022    StringRef Name = A->getValue(Args);
1023    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
1024#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
1025      .Case(CMDFLAG, NAME##Model)
1026#include "clang/Frontend/Analyses.def"
1027      .Default(NumConstraints);
1028    if (Value == NumConstraints) {
1029      Diags.Report(diag::err_drv_invalid_value)
1030        << A->getAsString(Args) << Name;
1031      Success = false;
1032    } else {
1033      Opts.AnalysisConstraintsOpt = Value;
1034    }
1035  }
1036
1037  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
1038    StringRef Name = A->getValue(Args);
1039    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
1040#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
1041      .Case(CMDFLAG, PD_##NAME)
1042#include "clang/Frontend/Analyses.def"
1043      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
1044    if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
1045      Diags.Report(diag::err_drv_invalid_value)
1046        << A->getAsString(Args) << Name;
1047      Success = false;
1048    } else {
1049      Opts.AnalysisDiagOpt = Value;
1050    }
1051  }
1052
1053  if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
1054    StringRef Name = A->getValue(Args);
1055    AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
1056#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
1057      .Case(CMDFLAG, NAME)
1058#include "clang/Frontend/Analyses.def"
1059      .Default(NumPurgeModes);
1060    if (Value == NumPurgeModes) {
1061      Diags.Report(diag::err_drv_invalid_value)
1062        << A->getAsString(Args) << Name;
1063      Success = false;
1064    } else {
1065      Opts.AnalysisPurgeOpt = Value;
1066    }
1067  }
1068
1069  if (Arg *A = Args.getLastArg(OPT_analyzer_ipa)) {
1070    StringRef Name = A->getValue(Args);
1071    AnalysisIPAMode Value = llvm::StringSwitch<AnalysisIPAMode>(Name)
1072#define ANALYSIS_IPA(NAME, CMDFLAG, DESC) \
1073      .Case(CMDFLAG, NAME)
1074#include "clang/Frontend/Analyses.def"
1075      .Default(NumIPAModes);
1076    if (Value == NumIPAModes) {
1077      Diags.Report(diag::err_drv_invalid_value)
1078        << A->getAsString(Args) << Name;
1079      Success = false;
1080    } else {
1081      Opts.IPAMode = Value;
1082    }
1083  }
1084
1085  if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
1086    StringRef Name = A->getValue(Args);
1087    AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
1088#define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
1089      .Case(CMDFLAG, NAME)
1090#include "clang/Frontend/Analyses.def"
1091      .Default(NumInliningModes);
1092    if (Value == NumInliningModes) {
1093      Diags.Report(diag::err_drv_invalid_value)
1094        << A->getAsString(Args) << Name;
1095      Success = false;
1096    } else {
1097      Opts.InliningMode = Value;
1098    }
1099  }
1100
1101  Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
1102  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
1103  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
1104  Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
1105  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
1106  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
1107  Opts.AnalyzeNestedBlocks =
1108    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
1109  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
1110  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
1111  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
1112  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
1113  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
1114  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
1115  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
1116  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
1117  Opts.EagerlyTrimEGraph = !Args.hasArg(OPT_analyzer_no_eagerly_trim_egraph);
1118  Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
1119  Opts.InlineMaxStackDepth =
1120    Args.getLastArgIntValue(OPT_analyzer_inline_max_stack_depth,
1121                            Opts.InlineMaxStackDepth, Diags);
1122  Opts.InlineMaxFunctionSize =
1123    Args.getLastArgIntValue(OPT_analyzer_inline_max_function_size,
1124                            Opts.InlineMaxFunctionSize, Diags);
1125
1126  Opts.CheckersControlList.clear();
1127  for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
1128                                             OPT_analyzer_disable_checker),
1129         ie = Args.filtered_end(); it != ie; ++it) {
1130    const Arg *A = *it;
1131    A->claim();
1132    bool enable = (A->getOption().getID() == OPT_analyzer_checker);
1133    // We can have a list of comma separated checker names, e.g:
1134    // '-analyzer-checker=cocoa,unix'
1135    StringRef checkerList = A->getValue(Args);
1136    SmallVector<StringRef, 4> checkers;
1137    checkerList.split(checkers, ",");
1138    for (unsigned i = 0, e = checkers.size(); i != e; ++i)
1139      Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
1140  }
1141
1142  return Success;
1143}
1144
1145static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
1146  Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
1147  Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
1148  return true;
1149}
1150
1151static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
1152                             DiagnosticsEngine &Diags) {
1153  using namespace options;
1154  bool Success = true;
1155
1156  unsigned OptLevel = getOptimizationLevel(Args, IK, Diags);
1157  if (OptLevel > 3) {
1158    Diags.Report(diag::err_drv_invalid_value)
1159      << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel;
1160    OptLevel = 3;
1161    Success = false;
1162  }
1163  Opts.OptimizationLevel = OptLevel;
1164
1165  // We must always run at least the always inlining pass.
1166  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
1167    : CodeGenOptions::OnlyAlwaysInlining;
1168  // -fno-inline-functions overrides OptimizationLevel > 1.
1169  Opts.NoInline = Args.hasArg(OPT_fno_inline);
1170  Opts.Inlining = Args.hasArg(OPT_fno_inline_functions) ?
1171    CodeGenOptions::OnlyAlwaysInlining : Opts.Inlining;
1172
1173  if (Args.hasArg(OPT_gline_tables_only)) {
1174    Opts.DebugInfo = CodeGenOptions::DebugLineTablesOnly;
1175  } else if (Args.hasArg(OPT_g_Flag)) {
1176    if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true))
1177      Opts.DebugInfo = CodeGenOptions::LimitedDebugInfo;
1178    else
1179      Opts.DebugInfo = CodeGenOptions::FullDebugInfo;
1180  }
1181
1182  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
1183  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
1184  Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
1185  Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
1186    OPT_fuse_register_sized_bitfield_access);
1187  Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
1188  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
1189  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
1190  Opts.NoCommon = Args.hasArg(OPT_fno_common);
1191  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
1192  Opts.OptimizeSize = getOptimizationLevelSize(Args, IK, Diags);
1193  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
1194                            Args.hasArg(OPT_ffreestanding));
1195  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
1196                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
1197
1198  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
1199  Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
1200  Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
1201  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
1202  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
1203  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
1204  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
1205  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
1206  Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
1207  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
1208  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
1209  Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
1210  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
1211  Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
1212                       Args.hasArg(OPT_cl_finite_math_only)||
1213                       Args.hasArg(OPT_cl_fast_relaxed_math));
1214  Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
1215                       Args.hasArg(OPT_cl_finite_math_only)||
1216                       Args.hasArg(OPT_cl_fast_relaxed_math));
1217  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
1218  Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
1219  Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
1220  Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
1221  Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
1222  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
1223  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
1224  Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
1225  Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm);
1226  Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
1227  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
1228  Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
1229  Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
1230                      Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
1231                      Args.hasArg(OPT_cl_fast_relaxed_math);
1232  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
1233  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
1234  Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
1235  Opts.BoundsChecking = Args.getLastArgIntValue(OPT_fbounds_checking_EQ, 0,
1236                                                Diags);
1237  Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
1238
1239  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
1240  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
1241
1242  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
1243  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
1244
1245  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
1246  Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
1247  Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
1248  Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
1249  Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
1250  Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
1251  Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
1252  Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
1253  if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
1254    StringRef Val = A->getValue(Args);
1255    Val.getAsInteger(10, Opts.StackAlignment);
1256  }
1257
1258  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
1259    StringRef Name = A->getValue(Args);
1260    unsigned Method = llvm::StringSwitch<unsigned>(Name)
1261      .Case("legacy", CodeGenOptions::Legacy)
1262      .Case("non-legacy", CodeGenOptions::NonLegacy)
1263      .Case("mixed", CodeGenOptions::Mixed)
1264      .Default(~0U);
1265    if (Method == ~0U) {
1266      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1267      Success = false;
1268    } else {
1269      Opts.ObjCDispatchMethod = Method;
1270    }
1271  }
1272
1273  if (Arg *A = Args.getLastArg(OPT_ftlsmodel_EQ)) {
1274    StringRef Name = A->getValue(Args);
1275    unsigned Model = llvm::StringSwitch<unsigned>(Name)
1276        .Case("global-dynamic", CodeGenOptions::GeneralDynamicTLSModel)
1277        .Case("local-dynamic", CodeGenOptions::LocalDynamicTLSModel)
1278        .Case("initial-exec", CodeGenOptions::InitialExecTLSModel)
1279        .Case("local-exec", CodeGenOptions::LocalExecTLSModel)
1280        .Default(~0U);
1281    if (Model == ~0U) {
1282      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1283      Success = false;
1284    } else {
1285      Opts.DefaultTLSModel = static_cast<CodeGenOptions::TLSModel>(Model);
1286    }
1287  }
1288
1289  return Success;
1290}
1291
1292static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
1293                                      ArgList &Args) {
1294  using namespace options;
1295  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
1296  Opts.Targets = Args.getAllArgValues(OPT_MT);
1297  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
1298  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
1299  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1300  Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
1301  Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
1302  Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
1303}
1304
1305bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1306                                DiagnosticsEngine *Diags) {
1307  using namespace options;
1308  bool Success = true;
1309
1310  Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
1311  Opts.DiagnosticSerializationFile =
1312    Args.getLastArgValue(OPT_diagnostic_serialized_file);
1313  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
1314  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
1315  Opts.Pedantic = Args.hasArg(OPT_pedantic);
1316  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
1317  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
1318  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
1319  Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1320                                 OPT_fno_show_column,
1321                                 /*Default=*/true);
1322  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1323  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1324  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
1325
1326  // Default behavior is to not to show note include stacks.
1327  Opts.ShowNoteIncludeStack = false;
1328  if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1329                               OPT_fno_diagnostics_show_note_include_stack))
1330    if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1331      Opts.ShowNoteIncludeStack = true;
1332
1333  StringRef ShowOverloads =
1334    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1335  if (ShowOverloads == "best")
1336    Opts.ShowOverloads = DiagnosticsEngine::Ovl_Best;
1337  else if (ShowOverloads == "all")
1338    Opts.ShowOverloads = DiagnosticsEngine::Ovl_All;
1339  else {
1340    Success = false;
1341    if (Diags)
1342      Diags->Report(diag::err_drv_invalid_value)
1343      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1344      << ShowOverloads;
1345  }
1346
1347  StringRef ShowCategory =
1348    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1349  if (ShowCategory == "none")
1350    Opts.ShowCategories = 0;
1351  else if (ShowCategory == "id")
1352    Opts.ShowCategories = 1;
1353  else if (ShowCategory == "name")
1354    Opts.ShowCategories = 2;
1355  else {
1356    Success = false;
1357    if (Diags)
1358      Diags->Report(diag::err_drv_invalid_value)
1359      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1360      << ShowCategory;
1361  }
1362
1363  StringRef Format =
1364    Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1365  if (Format == "clang")
1366    Opts.Format = DiagnosticOptions::Clang;
1367  else if (Format == "msvc")
1368    Opts.Format = DiagnosticOptions::Msvc;
1369  else if (Format == "vi")
1370    Opts.Format = DiagnosticOptions::Vi;
1371  else {
1372    Success = false;
1373    if (Diags)
1374      Diags->Report(diag::err_drv_invalid_value)
1375      << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1376      << Format;
1377  }
1378
1379  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1380  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1381  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1382  Opts.ElideType = !Args.hasArg(OPT_fno_elide_type);
1383  Opts.ShowTemplateTree = Args.hasArg(OPT_fdiagnostics_show_template_tree);
1384  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
1385  Opts.MacroBacktraceLimit
1386    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
1387                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1388  Opts.TemplateBacktraceLimit
1389    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
1390                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
1391                         Diags);
1392  Opts.ConstexprBacktraceLimit
1393    = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit,
1394                         DiagnosticOptions::DefaultConstexprBacktraceLimit,
1395                         Diags);
1396  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
1397                                    DiagnosticOptions::DefaultTabStop, Diags);
1398  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1399    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1400    if (Diags)
1401      Diags->Report(diag::warn_ignoring_ftabstop_value)
1402      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1403  }
1404  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
1405  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
1406  addWarningArgs(Args, Opts.Warnings);
1407
1408  return Success;
1409}
1410
1411static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1412  Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1413}
1414
1415static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1416                                   DiagnosticsEngine &Diags) {
1417  using namespace options;
1418  Opts.ProgramAction = frontend::ParseSyntaxOnly;
1419  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1420    switch (A->getOption().getID()) {
1421    default:
1422      llvm_unreachable("Invalid option in group!");
1423    case OPT_ast_dump:
1424      Opts.ProgramAction = frontend::ASTDump; break;
1425    case OPT_ast_dump_xml:
1426      Opts.ProgramAction = frontend::ASTDumpXML; break;
1427    case OPT_ast_print:
1428      Opts.ProgramAction = frontend::ASTPrint; break;
1429    case OPT_ast_view:
1430      Opts.ProgramAction = frontend::ASTView; break;
1431    case OPT_dump_raw_tokens:
1432      Opts.ProgramAction = frontend::DumpRawTokens; break;
1433    case OPT_dump_tokens:
1434      Opts.ProgramAction = frontend::DumpTokens; break;
1435    case OPT_S:
1436      Opts.ProgramAction = frontend::EmitAssembly; break;
1437    case OPT_emit_llvm_bc:
1438      Opts.ProgramAction = frontend::EmitBC; break;
1439    case OPT_emit_html:
1440      Opts.ProgramAction = frontend::EmitHTML; break;
1441    case OPT_emit_llvm:
1442      Opts.ProgramAction = frontend::EmitLLVM; break;
1443    case OPT_emit_llvm_only:
1444      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1445    case OPT_emit_codegen_only:
1446      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1447    case OPT_emit_obj:
1448      Opts.ProgramAction = frontend::EmitObj; break;
1449    case OPT_fixit_EQ:
1450      Opts.FixItSuffix = A->getValue(Args);
1451      // fall-through!
1452    case OPT_fixit:
1453      Opts.ProgramAction = frontend::FixIt; break;
1454    case OPT_emit_module:
1455      Opts.ProgramAction = frontend::GenerateModule; break;
1456    case OPT_emit_pch:
1457      Opts.ProgramAction = frontend::GeneratePCH; break;
1458    case OPT_emit_pth:
1459      Opts.ProgramAction = frontend::GeneratePTH; break;
1460    case OPT_init_only:
1461      Opts.ProgramAction = frontend::InitOnly; break;
1462    case OPT_fsyntax_only:
1463      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1464    case OPT_print_decl_contexts:
1465      Opts.ProgramAction = frontend::PrintDeclContext; break;
1466    case OPT_print_preamble:
1467      Opts.ProgramAction = frontend::PrintPreamble; break;
1468    case OPT_E:
1469      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1470    case OPT_rewrite_macros:
1471      Opts.ProgramAction = frontend::RewriteMacros; break;
1472    case OPT_rewrite_objc:
1473      Opts.ProgramAction = frontend::RewriteObjC; break;
1474    case OPT_rewrite_test:
1475      Opts.ProgramAction = frontend::RewriteTest; break;
1476    case OPT_analyze:
1477      Opts.ProgramAction = frontend::RunAnalysis; break;
1478    case OPT_migrate:
1479      Opts.ProgramAction = frontend::MigrateSource; break;
1480    case OPT_Eonly:
1481      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1482    }
1483  }
1484
1485  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1486    Opts.Plugins.push_back(A->getValue(Args,0));
1487    Opts.ProgramAction = frontend::PluginAction;
1488    Opts.ActionName = A->getValue(Args);
1489
1490    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1491           end = Args.filtered_end(); it != end; ++it) {
1492      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1493        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1494    }
1495  }
1496
1497  Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1498  Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
1499  for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
1500    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1501           end = Args.filtered_end(); it != end; ++it) {
1502      if ((*it)->getValue(Args, 0) == Opts.AddPluginActions[i])
1503        Opts.AddPluginArgs[i].push_back((*it)->getValue(Args, 1));
1504    }
1505  }
1506
1507  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1508    Opts.CodeCompletionAt =
1509      ParsedSourceLocation::FromString(A->getValue(Args));
1510    if (Opts.CodeCompletionAt.FileName.empty())
1511      Diags.Report(diag::err_drv_invalid_value)
1512        << A->getAsString(Args) << A->getValue(Args);
1513  }
1514  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1515
1516  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1517  Opts.Plugins = Args.getAllArgValues(OPT_load);
1518  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1519  Opts.ShowHelp = Args.hasArg(OPT_help);
1520  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1521  Opts.ShowCodePatternsInCodeCompletion
1522    = Args.hasArg(OPT_code_completion_patterns);
1523  Opts.ShowGlobalSymbolsInCodeCompletion
1524    = !Args.hasArg(OPT_no_code_completion_globals);
1525  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1526  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1527  Opts.ShowVersion = Args.hasArg(OPT_version);
1528  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1529  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1530  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1531  Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
1532  Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
1533  Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
1534  Opts.OverrideRecordLayoutsFile
1535    = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
1536  if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1537                                     OPT_arcmt_modify,
1538                                     OPT_arcmt_migrate)) {
1539    switch (A->getOption().getID()) {
1540    default:
1541      llvm_unreachable("missed a case");
1542    case OPT_arcmt_check:
1543      Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1544      break;
1545    case OPT_arcmt_modify:
1546      Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1547      break;
1548    case OPT_arcmt_migrate:
1549      Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1550      break;
1551    }
1552  }
1553  Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
1554  Opts.ARCMTMigrateReportOut
1555    = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1556  Opts.ARCMTMigrateEmitARCErrors
1557    = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1558
1559  if (Args.hasArg(OPT_objcmt_migrate_literals))
1560    Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
1561  if (Args.hasArg(OPT_objcmt_migrate_subscripting))
1562    Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
1563
1564  if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
1565      Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
1566    Diags.Report(diag::err_drv_argument_not_allowed_with)
1567      << "ARC migration" << "ObjC migration";
1568  }
1569
1570  InputKind DashX = IK_None;
1571  if (const Arg *A = Args.getLastArg(OPT_x)) {
1572    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1573      .Case("c", IK_C)
1574      .Case("cl", IK_OpenCL)
1575      .Case("cuda", IK_CUDA)
1576      .Case("c++", IK_CXX)
1577      .Case("objective-c", IK_ObjC)
1578      .Case("objective-c++", IK_ObjCXX)
1579      .Case("cpp-output", IK_PreprocessedC)
1580      .Case("assembler-with-cpp", IK_Asm)
1581      .Case("c++-cpp-output", IK_PreprocessedCXX)
1582      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1583      .Case("objc-cpp-output", IK_PreprocessedObjC)
1584      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1585      .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
1586      .Case("c-header", IK_C)
1587      .Case("cl-header", IK_OpenCL)
1588      .Case("objective-c-header", IK_ObjC)
1589      .Case("c++-header", IK_CXX)
1590      .Case("objective-c++-header", IK_ObjCXX)
1591      .Case("ast", IK_AST)
1592      .Case("ir", IK_LLVM_IR)
1593      .Default(IK_None);
1594    if (DashX == IK_None)
1595      Diags.Report(diag::err_drv_invalid_value)
1596        << A->getAsString(Args) << A->getValue(Args);
1597  }
1598
1599  // '-' is the default input if none is given.
1600  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1601  Opts.Inputs.clear();
1602  if (Inputs.empty())
1603    Inputs.push_back("-");
1604  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1605    InputKind IK = DashX;
1606    if (IK == IK_None) {
1607      IK = FrontendOptions::getInputKindForExtension(
1608        StringRef(Inputs[i]).rsplit('.').second);
1609      // FIXME: Remove this hack.
1610      if (i == 0)
1611        DashX = IK;
1612    }
1613    Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
1614  }
1615
1616  return DashX;
1617}
1618
1619std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1620                                                 void *MainAddr) {
1621  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1622
1623  if (!P.isEmpty()) {
1624    P.eraseComponent();  // Remove /clang from foo/bin/clang
1625    P.eraseComponent();  // Remove /bin   from foo/bin
1626
1627    // Get foo/lib/clang/<version>/include
1628    P.appendComponent("lib");
1629    P.appendComponent("clang");
1630    P.appendComponent(CLANG_VERSION_STRING);
1631  }
1632
1633  return P.str();
1634}
1635
1636static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1637  using namespace options;
1638  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1639  Opts.Verbose = Args.hasArg(OPT_v);
1640  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1641  Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1642  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1643  if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1644    Opts.UseLibcxx = (strcmp(A->getValue(Args), "libc++") == 0);
1645  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1646  Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodule_cache_path);
1647  Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1648
1649  // Add -I..., -F..., and -index-header-map options in order.
1650  bool IsIndexHeaderMap = false;
1651  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1652                                             OPT_index_header_map),
1653       ie = Args.filtered_end(); it != ie; ++it) {
1654    if ((*it)->getOption().matches(OPT_index_header_map)) {
1655      // -index-header-map applies to the next -I or -F.
1656      IsIndexHeaderMap = true;
1657      continue;
1658    }
1659
1660    frontend::IncludeDirGroup Group
1661      = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1662
1663    Opts.AddPath((*it)->getValue(Args), Group, true,
1664                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), false);
1665    IsIndexHeaderMap = false;
1666  }
1667
1668  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1669  StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1670  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1671                                             OPT_iwithprefixbefore),
1672         ie = Args.filtered_end(); it != ie; ++it) {
1673    const Arg *A = *it;
1674    if (A->getOption().matches(OPT_iprefix))
1675      Prefix = A->getValue(Args);
1676    else if (A->getOption().matches(OPT_iwithprefix))
1677      Opts.AddPath(Prefix.str() + A->getValue(Args),
1678                   frontend::System, false, false, false);
1679    else
1680      Opts.AddPath(Prefix.str() + A->getValue(Args),
1681                   frontend::Angled, false, false, false);
1682  }
1683
1684  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1685         ie = Args.filtered_end(); it != ie; ++it)
1686    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, false);
1687  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1688         ie = Args.filtered_end(); it != ie; ++it)
1689    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, false);
1690  for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1691         OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1692    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1693                 !(*it)->getOption().matches(OPT_iwithsysroot));
1694  for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1695         ie = Args.filtered_end(); it != ie; ++it)
1696    Opts.AddPath((*it)->getValue(Args), frontend::System, true, true,
1697                 true);
1698
1699  // Add the paths for the various language specific isystem flags.
1700  for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1701       ie = Args.filtered_end(); it != ie; ++it)
1702    Opts.AddPath((*it)->getValue(Args), frontend::CSystem, true, false, true);
1703  for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1704       ie = Args.filtered_end(); it != ie; ++it)
1705    Opts.AddPath((*it)->getValue(Args), frontend::CXXSystem, true, false, true);
1706  for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1707       ie = Args.filtered_end(); it != ie; ++it)
1708    Opts.AddPath((*it)->getValue(Args), frontend::ObjCSystem, true, false,true);
1709  for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1710       ie = Args.filtered_end(); it != ie; ++it)
1711    Opts.AddPath((*it)->getValue(Args), frontend::ObjCXXSystem, true, false,
1712                 true);
1713
1714  // Add the internal paths from a driver that detects standard include paths.
1715  for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1716                                            OPT_internal_externc_isystem),
1717                    E = Args.filtered_end();
1718       I != E; ++I)
1719    Opts.AddPath((*I)->getValue(Args), frontend::System,
1720                 false, false, /*IgnoreSysRoot=*/true, /*IsInternal=*/true,
1721                 (*I)->getOption().matches(OPT_internal_externc_isystem));
1722
1723  // Add the path prefixes which are implicitly treated as being system headers.
1724  for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix,
1725                                            OPT_ino_system_prefix),
1726                    E = Args.filtered_end();
1727       I != E; ++I)
1728    Opts.AddSystemHeaderPrefix((*I)->getValue(Args),
1729                               (*I)->getOption().matches(OPT_isystem_prefix));
1730}
1731
1732void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1733                                         LangStandard::Kind LangStd) {
1734  // Set some properties which depend solely on the input kind; it would be nice
1735  // to move these to the language standard, and have the driver resolve the
1736  // input kind + language standard.
1737  if (IK == IK_Asm) {
1738    Opts.AsmPreprocessor = 1;
1739  } else if (IK == IK_ObjC ||
1740             IK == IK_ObjCXX ||
1741             IK == IK_PreprocessedObjC ||
1742             IK == IK_PreprocessedObjCXX) {
1743    Opts.ObjC1 = Opts.ObjC2 = 1;
1744  }
1745
1746  if (LangStd == LangStandard::lang_unspecified) {
1747    // Based on the base language, pick one.
1748    switch (IK) {
1749    case IK_None:
1750    case IK_AST:
1751    case IK_LLVM_IR:
1752      llvm_unreachable("Invalid input kind!");
1753    case IK_OpenCL:
1754      LangStd = LangStandard::lang_opencl;
1755      break;
1756    case IK_CUDA:
1757      LangStd = LangStandard::lang_cuda;
1758      break;
1759    case IK_Asm:
1760    case IK_C:
1761    case IK_PreprocessedC:
1762    case IK_ObjC:
1763    case IK_PreprocessedObjC:
1764      LangStd = LangStandard::lang_gnu99;
1765      break;
1766    case IK_CXX:
1767    case IK_PreprocessedCXX:
1768    case IK_ObjCXX:
1769    case IK_PreprocessedObjCXX:
1770      LangStd = LangStandard::lang_gnucxx98;
1771      break;
1772    }
1773  }
1774
1775  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1776  Opts.BCPLComment = Std.hasBCPLComments();
1777  Opts.C99 = Std.isC99();
1778  Opts.C11 = Std.isC11();
1779  Opts.CPlusPlus = Std.isCPlusPlus();
1780  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1781  Opts.Digraphs = Std.hasDigraphs();
1782  Opts.GNUMode = Std.isGNUMode();
1783  Opts.GNUInline = !Std.isC99();
1784  Opts.HexFloats = Std.hasHexFloats();
1785  Opts.ImplicitInt = Std.hasImplicitInt();
1786
1787  // Set OpenCL Version.
1788  if (LangStd == LangStandard::lang_opencl) {
1789    Opts.OpenCL = 1;
1790    Opts.OpenCLVersion = 100;
1791  }
1792  else if (LangStd == LangStandard::lang_opencl11) {
1793      Opts.OpenCL = 1;
1794      Opts.OpenCLVersion = 110;
1795  }
1796  else if (LangStd == LangStandard::lang_opencl12) {
1797    Opts.OpenCL = 1;
1798    Opts.OpenCLVersion = 120;
1799  }
1800
1801  // OpenCL has some additional defaults.
1802  if (Opts.OpenCL) {
1803    Opts.AltiVec = 0;
1804    Opts.CXXOperatorNames = 1;
1805    Opts.LaxVectorConversions = 0;
1806    Opts.DefaultFPContract = 1;
1807  }
1808
1809  if (LangStd == LangStandard::lang_cuda)
1810    Opts.CUDA = 1;
1811
1812  // OpenCL and C++ both have bool, true, false keywords.
1813  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1814
1815  Opts.GNUKeywords = Opts.GNUMode;
1816  Opts.CXXOperatorNames = Opts.CPlusPlus;
1817
1818  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1819  // is specified, or -std is set to a conforming mode.
1820  Opts.Trigraphs = !Opts.GNUMode;
1821
1822  Opts.DollarIdents = !Opts.AsmPreprocessor;
1823}
1824
1825static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1826                          DiagnosticsEngine &Diags) {
1827  // FIXME: Cleanup per-file based stuff.
1828  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1829  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1830    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1831#define LANGSTANDARD(id, name, desc, features) \
1832      .Case(name, LangStandard::lang_##id)
1833#include "clang/Frontend/LangStandards.def"
1834      .Default(LangStandard::lang_unspecified);
1835    if (LangStd == LangStandard::lang_unspecified)
1836      Diags.Report(diag::err_drv_invalid_value)
1837        << A->getAsString(Args) << A->getValue(Args);
1838    else {
1839      // Valid standard, check to make sure language and standard are compatable.
1840      const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1841      switch (IK) {
1842      case IK_C:
1843      case IK_ObjC:
1844      case IK_PreprocessedC:
1845      case IK_PreprocessedObjC:
1846        if (!(Std.isC89() || Std.isC99()))
1847          Diags.Report(diag::err_drv_argument_not_allowed_with)
1848            << A->getAsString(Args) << "C/ObjC";
1849        break;
1850      case IK_CXX:
1851      case IK_ObjCXX:
1852      case IK_PreprocessedCXX:
1853      case IK_PreprocessedObjCXX:
1854        if (!Std.isCPlusPlus())
1855          Diags.Report(diag::err_drv_argument_not_allowed_with)
1856            << A->getAsString(Args) << "C++/ObjC++";
1857        break;
1858      case IK_OpenCL:
1859        if (!Std.isC99())
1860          Diags.Report(diag::err_drv_argument_not_allowed_with)
1861            << A->getAsString(Args) << "OpenCL";
1862        break;
1863      case IK_CUDA:
1864        if (!Std.isCPlusPlus())
1865          Diags.Report(diag::err_drv_argument_not_allowed_with)
1866            << A->getAsString(Args) << "CUDA";
1867        break;
1868      default:
1869        break;
1870      }
1871    }
1872  }
1873
1874  // -cl-std only applies for OpenCL language standards.
1875  // Override the -std option in this case.
1876  if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1877    LangStandard::Kind OpenCLLangStd
1878    = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1879    .Case("CL", LangStandard::lang_opencl)
1880    .Case("CL1.1", LangStandard::lang_opencl11)
1881    .Case("CL1.2", LangStandard::lang_opencl12)
1882    .Default(LangStandard::lang_unspecified);
1883
1884    if (OpenCLLangStd == LangStandard::lang_unspecified) {
1885      Diags.Report(diag::err_drv_invalid_value)
1886      << A->getAsString(Args) << A->getValue(Args);
1887    }
1888    else
1889      LangStd = OpenCLLangStd;
1890  }
1891
1892  CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1893
1894  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1895  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1896  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1897  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1898  // name, as it doesn't seem a useful distinction.
1899  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1900                                  Opts.GNUKeywords);
1901
1902  if (Args.hasArg(OPT_fno_operator_names))
1903    Opts.CXXOperatorNames = 0;
1904
1905  if (Opts.ObjC1) {
1906    if (Arg *arg = Args.getLastArg(OPT_fobjc_runtime_EQ)) {
1907      StringRef value = arg->getValue(Args);
1908      if (Opts.ObjCRuntime.tryParse(value))
1909        Diags.Report(diag::err_drv_unknown_objc_runtime) << value;
1910    }
1911
1912    if (Args.hasArg(OPT_fobjc_gc_only))
1913      Opts.setGC(LangOptions::GCOnly);
1914    else if (Args.hasArg(OPT_fobjc_gc))
1915      Opts.setGC(LangOptions::HybridGC);
1916    else if (Args.hasArg(OPT_fobjc_arc)) {
1917      Opts.ObjCAutoRefCount = 1;
1918      if (!Opts.ObjCRuntime.isNonFragile())
1919        Diags.Report(diag::err_arc_nonfragile_abi);
1920    }
1921
1922    Opts.ObjCRuntimeHasWeak = Opts.ObjCRuntime.hasWeak();
1923    if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1924      Opts.ObjCRuntimeHasWeak = 1;
1925
1926    if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1927      Opts.ObjCInferRelatedResultType = 0;
1928  }
1929
1930  if (Args.hasArg(OPT_fgnu89_inline))
1931    Opts.GNUInline = 1;
1932
1933  if (Args.hasArg(OPT_fapple_kext)) {
1934    if (!Opts.CPlusPlus)
1935      Diags.Report(diag::warn_c_kext);
1936    else
1937      Opts.AppleKext = 1;
1938  }
1939
1940  if (Args.hasArg(OPT_print_ivar_layout))
1941    Opts.ObjCGCBitmapPrint = 1;
1942  if (Args.hasArg(OPT_fno_constant_cfstrings))
1943    Opts.NoConstantCFStrings = 1;
1944
1945  if (Args.hasArg(OPT_faltivec))
1946    Opts.AltiVec = 1;
1947
1948  if (Args.hasArg(OPT_pthread))
1949    Opts.POSIXThreads = 1;
1950
1951  if (Args.hasArg(OPT_fdelayed_template_parsing))
1952    Opts.DelayedTemplateParsing = 1;
1953
1954  StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1955  if (Vis == "default")
1956    Opts.setVisibilityMode(DefaultVisibility);
1957  else if (Vis == "hidden")
1958    Opts.setVisibilityMode(HiddenVisibility);
1959  else if (Vis == "protected")
1960    // FIXME: diagnose if target does not support protected visibility
1961    Opts.setVisibilityMode(ProtectedVisibility);
1962  else
1963    Diags.Report(diag::err_drv_invalid_value)
1964      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1965
1966  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1967    Opts.InlineVisibilityHidden = 1;
1968
1969  if (Args.hasArg(OPT_ftrapv)) {
1970    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1971    // Set the handler, if one is specified.
1972    Opts.OverflowHandler =
1973        Args.getLastArgValue(OPT_ftrapv_handler);
1974  }
1975  else if (Args.hasArg(OPT_fwrapv))
1976    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1977
1978  if (Args.hasArg(OPT_trigraphs))
1979    Opts.Trigraphs = 1;
1980
1981  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1982                                   OPT_fno_dollars_in_identifiers,
1983                                   Opts.DollarIdents);
1984  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1985  Opts.MicrosoftExt
1986    = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility);
1987  Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility);
1988  Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1989  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1990  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1991  Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1992                                   Opts.ConstStrings);
1993  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1994    Opts.LaxVectorConversions = 0;
1995  if (Args.hasArg(OPT_fno_threadsafe_statics))
1996    Opts.ThreadsafeStatics = 0;
1997  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1998  Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1999  Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
2000  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
2001  Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
2002
2003  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
2004  Opts.Blocks = Args.hasArg(OPT_fblocks);
2005  Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
2006  Opts.Modules = Args.hasArg(OPT_fmodules);
2007  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
2008  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
2009  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
2010  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
2011  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
2012  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
2013  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
2014  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
2015  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
2016  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
2017  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
2018                                                    Diags);
2019  Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512,
2020                                                    Diags);
2021  Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
2022  Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ,
2023                                                    0, Diags);
2024  Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
2025  Opts.ObjCConstantStringClass =
2026    Args.getLastArgValue(OPT_fconstant_string_class);
2027  Opts.ObjCDefaultSynthProperties =
2028    Args.hasArg(OPT_fobjc_default_synthesize_properties);
2029  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
2030  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
2031  Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags);
2032  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
2033  Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags);
2034  Opts.Static = Args.hasArg(OPT_static_define);
2035  Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
2036  Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
2037                        || Args.hasArg(OPT_fdump_record_layouts);
2038  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
2039  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
2040  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
2041  Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
2042  Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
2043  Opts.MRTD = Args.hasArg(OPT_mrtd);
2044  Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
2045  Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
2046  Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
2047  Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
2048  Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
2049  Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
2050  Opts.AddressSanitizer = Args.hasArg(OPT_faddress_sanitizer);
2051  Opts.ThreadSanitizer = Args.hasArg(OPT_fthread_sanitizer);
2052  Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
2053  Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
2054
2055  // Record whether the __DEPRECATED define was requested.
2056  Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
2057                                 OPT_fno_deprecated_macro,
2058                                 Opts.Deprecated);
2059
2060  // FIXME: Eliminate this dependency.
2061  unsigned Opt = getOptimizationLevel(Args, IK, Diags);
2062  Opts.Optimize = Opt != 0;
2063  Opts.OptimizeSize = getOptimizationLevelSize(Args, IK, Diags);
2064
2065  // This is the __NO_INLINE__ define, which just depends on things like the
2066  // optimization level and -fno-inline, not actually whether the backend has
2067  // inlining enabled.
2068  Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
2069
2070  Opts.FastMath = Args.hasArg(OPT_ffast_math);
2071
2072  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
2073  switch (SSP) {
2074  default:
2075    Diags.Report(diag::err_drv_invalid_value)
2076      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
2077    break;
2078  case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
2079  case 1: Opts.setStackProtector(LangOptions::SSPOn);  break;
2080  case 2: Opts.setStackProtector(LangOptions::SSPReq); break;
2081  }
2082}
2083
2084static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
2085                                  FileManager &FileMgr,
2086                                  DiagnosticsEngine &Diags) {
2087  using namespace options;
2088  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
2089  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
2090  if (const Arg *A = Args.getLastArg(OPT_token_cache))
2091      Opts.TokenCache = A->getValue(Args);
2092  else
2093    Opts.TokenCache = Opts.ImplicitPTHInclude;
2094  Opts.UsePredefines = !Args.hasArg(OPT_undef);
2095  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
2096  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
2097
2098  Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
2099  for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
2100         ie = Args.filtered_end(); it != ie; ++it) {
2101    const Arg *A = *it;
2102    Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
2103  }
2104
2105  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
2106    StringRef Value(A->getValue(Args));
2107    size_t Comma = Value.find(',');
2108    unsigned Bytes = 0;
2109    unsigned EndOfLine = 0;
2110
2111    if (Comma == StringRef::npos ||
2112        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
2113        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
2114      Diags.Report(diag::err_drv_preamble_format);
2115    else {
2116      Opts.PrecompiledPreambleBytes.first = Bytes;
2117      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
2118    }
2119  }
2120
2121  // Add macros from the command line.
2122  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
2123         ie = Args.filtered_end(); it != ie; ++it) {
2124    if ((*it)->getOption().matches(OPT_D))
2125      Opts.addMacroDef((*it)->getValue(Args));
2126    else
2127      Opts.addMacroUndef((*it)->getValue(Args));
2128  }
2129
2130  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
2131
2132  // Add the ordered list of -includes.
2133  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
2134                                             OPT_include_pth),
2135         ie = Args.filtered_end(); it != ie; ++it) {
2136    const Arg *A = *it;
2137    // PCH is handled specially, we need to extra the original include path.
2138    if (A->getOption().matches(OPT_include_pch)) {
2139      std::string OriginalFile =
2140        ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
2141      if (OriginalFile.empty())
2142        continue;
2143
2144      Opts.Includes.push_back(OriginalFile);
2145    } else
2146      Opts.Includes.push_back(A->getValue(Args));
2147  }
2148
2149  for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
2150         ie = Args.filtered_end(); it != ie; ++it) {
2151    const Arg *A = *it;
2152    Opts.ChainedIncludes.push_back(A->getValue(Args));
2153  }
2154
2155  // Include 'altivec.h' if -faltivec option present
2156  if (Args.hasArg(OPT_faltivec))
2157    Opts.Includes.push_back("altivec.h");
2158
2159  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
2160         ie = Args.filtered_end(); it != ie; ++it) {
2161    const Arg *A = *it;
2162    std::pair<StringRef,StringRef> Split =
2163      StringRef(A->getValue(Args)).split(';');
2164
2165    if (Split.second.empty()) {
2166      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
2167      continue;
2168    }
2169
2170    Opts.addRemappedFile(Split.first, Split.second);
2171  }
2172
2173  if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
2174    StringRef Name = A->getValue(Args);
2175    unsigned Library = llvm::StringSwitch<unsigned>(Name)
2176      .Case("libc++", ARCXX_libcxx)
2177      .Case("libstdc++", ARCXX_libstdcxx)
2178      .Case("none", ARCXX_nolib)
2179      .Default(~0U);
2180    if (Library == ~0U)
2181      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
2182    else
2183      Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
2184  }
2185}
2186
2187static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
2188                                        ArgList &Args) {
2189  using namespace options;
2190  Opts.ShowCPP = !Args.hasArg(OPT_dM);
2191  Opts.ShowComments = Args.hasArg(OPT_C);
2192  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
2193  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
2194  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
2195  Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
2196}
2197
2198static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
2199  using namespace options;
2200  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
2201  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
2202  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
2203  Opts.Features = Args.getAllArgValues(OPT_target_feature);
2204  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
2205  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
2206
2207  // Use the default target triple if unspecified.
2208  if (Opts.Triple.empty())
2209    Opts.Triple = llvm::sys::getDefaultTargetTriple();
2210}
2211
2212//
2213
2214bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
2215                                        const char *const *ArgBegin,
2216                                        const char *const *ArgEnd,
2217                                        DiagnosticsEngine &Diags) {
2218  bool Success = true;
2219
2220  // Parse the arguments.
2221  OwningPtr<OptTable> Opts(createDriverOptTable());
2222  unsigned MissingArgIndex, MissingArgCount;
2223  OwningPtr<InputArgList> Args(
2224    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
2225
2226  // Check for missing argument error.
2227  if (MissingArgCount) {
2228    Diags.Report(diag::err_drv_missing_argument)
2229      << Args->getArgString(MissingArgIndex) << MissingArgCount;
2230    Success = false;
2231  }
2232
2233  // Issue errors on unknown arguments.
2234  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
2235         ie = Args->filtered_end(); it != ie; ++it) {
2236    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
2237    Success = false;
2238  }
2239
2240  // Issue errors on arguments that are not valid for CC1.
2241  for (ArgList::iterator I = Args->begin(), E = Args->end();
2242       I != E; ++I) {
2243    if (!(*I)->getOption().isCC1Option()) {
2244      Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args);
2245      Success = false;
2246    }
2247  }
2248
2249  Success = ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags) && Success;
2250  Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
2251  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
2252  Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
2253            && Success;
2254  ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
2255  // FIXME: We shouldn't have to pass the DashX option around here
2256  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
2257  Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags)
2258            && Success;
2259  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
2260  if (DashX != IK_AST && DashX != IK_LLVM_IR) {
2261    ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
2262    if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2263      Res.getLangOpts()->ObjCExceptions = 1;
2264  }
2265  // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
2266  // PCH file and find the original header name. Remove the need to do that in
2267  // ParsePreprocessorArgs and remove the FileManager
2268  // parameters from the function and the "FileManager.h" #include.
2269  FileManager FileMgr(Res.getFileSystemOpts());
2270  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
2271  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
2272  ParseTargetArgs(Res.getTargetOpts(), *Args);
2273
2274  return Success;
2275}
2276
2277namespace {
2278
2279  class ModuleSignature {
2280    llvm::SmallVector<uint64_t, 16> Data;
2281    unsigned CurBit;
2282    uint64_t CurValue;
2283
2284  public:
2285    ModuleSignature() : CurBit(0), CurValue(0) { }
2286
2287    void add(uint64_t Value, unsigned Bits);
2288    void add(StringRef Value);
2289    void flush();
2290
2291    llvm::APInt getAsInteger() const;
2292  };
2293}
2294
2295void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
2296  CurValue |= Value << CurBit;
2297  if (CurBit + NumBits < 64) {
2298    CurBit += NumBits;
2299    return;
2300  }
2301
2302  // Add the current word.
2303  Data.push_back(CurValue);
2304
2305  if (CurBit)
2306    CurValue = Value >> (64-CurBit);
2307  else
2308    CurValue = 0;
2309  CurBit = (CurBit+NumBits) & 63;
2310}
2311
2312void ModuleSignature::flush() {
2313  if (CurBit == 0)
2314    return;
2315
2316  Data.push_back(CurValue);
2317  CurBit = 0;
2318  CurValue = 0;
2319}
2320
2321void ModuleSignature::add(StringRef Value) {
2322  for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
2323    add(*I, 8);
2324}
2325
2326llvm::APInt ModuleSignature::getAsInteger() const {
2327  return llvm::APInt(Data.size() * 64, Data);
2328}
2329
2330std::string CompilerInvocation::getModuleHash() const {
2331  ModuleSignature Signature;
2332
2333  // Start the signature with the compiler version.
2334  // FIXME: The full version string can be quite long.  Omit it from the
2335  // module hash for now to avoid failures where the path name becomes too
2336  // long.  An MD5 or similar checksum would work well here.
2337  // Signature.add(getClangFullRepositoryVersion());
2338
2339  // Extend the signature with the language options
2340#define LANGOPT(Name, Bits, Default, Description) \
2341  Signature.add(LangOpts->Name, Bits);
2342#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2343  Signature.add(static_cast<unsigned>(LangOpts->get##Name()), Bits);
2344#define BENIGN_LANGOPT(Name, Bits, Default, Description)
2345#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
2346#include "clang/Basic/LangOptions.def"
2347
2348  // Extend the signature with the target triple
2349  llvm::Triple T(TargetOpts.Triple);
2350  Signature.add((unsigned)T.getArch(), 5);
2351  Signature.add((unsigned)T.getVendor(), 4);
2352  Signature.add((unsigned)T.getOS(), 5);
2353  Signature.add((unsigned)T.getEnvironment(), 4);
2354
2355  // Extend the signature with preprocessor options.
2356  Signature.add(getPreprocessorOpts().UsePredefines, 1);
2357  Signature.add(getPreprocessorOpts().DetailedRecord, 1);
2358
2359  // Hash the preprocessor defines.
2360  // FIXME: This is terrible. Use an MD5 sum of the preprocessor defines.
2361  std::vector<StringRef> MacroDefs;
2362  for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
2363            I = getPreprocessorOpts().Macros.begin(),
2364         IEnd = getPreprocessorOpts().Macros.end();
2365       I != IEnd; ++I) {
2366    if (!I->second)
2367      MacroDefs.push_back(I->first);
2368  }
2369  llvm::array_pod_sort(MacroDefs.begin(), MacroDefs.end());
2370
2371  unsigned PPHashResult = 0;
2372  for (unsigned I = 0, N = MacroDefs.size(); I != N; ++I)
2373    PPHashResult = llvm::HashString(MacroDefs[I], PPHashResult);
2374  Signature.add(PPHashResult, 32);
2375
2376  // We've generated the signature. Treat it as one large APInt that we'll
2377  // encode in base-36 and return.
2378  Signature.flush();
2379  return Signature.getAsInteger().toString(36, /*Signed=*/false);
2380}
2381