CompilerInvocation.cpp revision 8af669f2f1d92436fe6dc43144bb084a620e7516 
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.ObjCRuntimeHasARC)
210    Res.push_back("-fobjc-runtime-has-arc");
211  if (Opts.ObjCRuntimeHasTerminate)
212    Res.push_back("-fobjc-runtime-has-terminate");
213  if (Opts.EmitGcovArcs)
214    Res.push_back("-femit-coverage-data");
215  if (Opts.EmitGcovNotes)
216    Res.push_back("-femit-coverage-notes");
217  if (!Opts.MergeAllConstants)
218    Res.push_back("-fno-merge-all-constants");
219  if (Opts.NoCommon)
220    Res.push_back("-fno-common");
221  if (Opts.ForbidGuardVariables)
222    Res.push_back("-fforbid-guard-variables");
223  if (Opts.UseRegisterSizedBitfieldAccess)
224    Res.push_back("-fuse-register-sized-bitfield-access");
225  if (Opts.NoImplicitFloat)
226    Res.push_back("-no-implicit-float");
227  if (Opts.OmitLeafFramePointer)
228    Res.push_back("-momit-leaf-frame-pointer");
229  if (Opts.OptimizeSize) {
230    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
231    Opts.OptimizeSize == 1 ? Res.push_back("-Os") : Res.push_back("-Oz");
232  } else if (Opts.OptimizationLevel != 0)
233    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
234  if (!Opts.MainFileName.empty())
235    Res.push_back("-main-file-name", Opts.MainFileName);
236  if (Opts.NoInfsFPMath)
237    Res.push_back("-menable-no-infinities");
238  if (Opts.NoNaNsFPMath)
239    Res.push_back("-menable-no-nans");
240  // SimplifyLibCalls is only derived.
241  // TimePasses is only derived.
242  // UnitAtATime is unused.
243  // Inlining is only derived.
244
245  // UnrollLoops is derived, but also accepts an option, no
246  // harm in pushing it back here.
247  if (Opts.UnrollLoops)
248    Res.push_back("-funroll-loops");
249  if (Opts.DataSections)
250    Res.push_back("-fdata-sections");
251  if (Opts.FunctionSections)
252    Res.push_back("-ffunction-sections");
253  if (Opts.AsmVerbose)
254    Res.push_back("-masm-verbose");
255  if (!Opts.CodeModel.empty())
256    Res.push_back("-mcode-model", Opts.CodeModel);
257  if (Opts.CUDAIsDevice)
258    Res.push_back("-fcuda-is-device");
259  if (!Opts.CXAAtExit)
260    Res.push_back("-fno-use-cxa-atexit");
261  if (Opts.CXXCtorDtorAliases)
262    Res.push_back("-mconstructor-aliases");
263  if (Opts.ObjCAutoRefCountExceptions)
264    Res.push_back("-fobjc-arc-eh");
265  if (!Opts.DebugPass.empty()) {
266    Res.push_back("-mdebug-pass", Opts.DebugPass);
267  }
268  if (Opts.DisableFPElim)
269    Res.push_back("-mdisable-fp-elim");
270  if (!Opts.FloatABI.empty())
271    Res.push_back("-mfloat-abi", Opts.FloatABI);
272  if (!Opts.LimitFloatPrecision.empty())
273    Res.push_back("-mlimit-float-precision", Opts.LimitFloatPrecision);
274  if (Opts.NoZeroInitializedInBSS)
275    Res.push_back("-mno-zero-initialized-bss");
276  switch (Opts.getObjCDispatchMethod()) {
277  case CodeGenOptions::Legacy:
278    break;
279  case CodeGenOptions::Mixed:
280    Res.push_back("-fobjc-dispatch-method=mixed");
281    break;
282  case CodeGenOptions::NonLegacy:
283    Res.push_back("-fobjc-dispatch-method=non-legacy");
284    break;
285  }
286  if (Opts.BoundsChecking > 0)
287    Res.push_back("-fbounds-checking=" + llvm::utostr(Opts.BoundsChecking));
288  if (Opts.NumRegisterParameters)
289    Res.push_back("-mregparm", llvm::utostr(Opts.NumRegisterParameters));
290  if (Opts.NoGlobalMerge)
291    Res.push_back("-mno-global-merge");
292  if (Opts.NoExecStack)
293    Res.push_back("-mnoexecstack");
294  if (Opts.RelaxAll)
295    Res.push_back("-mrelax-all");
296  if (Opts.SaveTempLabels)
297    Res.push_back("-msave-temp-labels");
298  if (Opts.NoDwarf2CFIAsm)
299    Res.push_back("-fno-dwarf2-cfi-asm");
300  if (Opts.NoDwarfDirectoryAsm)
301    Res.push_back("-fno-dwarf-directory-asm");
302  if (Opts.SoftFloat)
303    Res.push_back("-msoft-float");
304  if (Opts.StrictEnums)
305    Res.push_back("-fstrict-enums");
306  if (Opts.UnwindTables)
307    Res.push_back("-munwind-tables");
308  if (Opts.RelocationModel != "pic")
309    Res.push_back("-mrelocation-model", Opts.RelocationModel);
310  if (!Opts.VerifyModule)
311    Res.push_back("-disable-llvm-verifier");
312  for (unsigned i = 0, e = Opts.BackendOptions.size(); i != e; ++i)
313    Res.push_back("-backend-option", Opts.BackendOptions[i]);
314}
315
316static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
317                                       ToArgsList &Res) {
318  if (Opts.IncludeSystemHeaders)
319    Res.push_back("-sys-header-deps");
320  if (Opts.ShowHeaderIncludes)
321    Res.push_back("-H");
322  if (!Opts.HeaderIncludeOutputFile.empty())
323    Res.push_back("-header-include-file", Opts.HeaderIncludeOutputFile);
324  if (Opts.UsePhonyTargets)
325    Res.push_back("-MP");
326  if (!Opts.OutputFile.empty())
327    Res.push_back("-dependency-file", Opts.OutputFile);
328  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i)
329    Res.push_back("-MT", Opts.Targets[i]);
330}
331
332static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
333                                 ToArgsList &Res) {
334  if (Opts.IgnoreWarnings)
335    Res.push_back("-w");
336  if (Opts.NoRewriteMacros)
337    Res.push_back("-Wno-rewrite-macros");
338  if (Opts.Pedantic)
339    Res.push_back("-pedantic");
340  if (Opts.PedanticErrors)
341    Res.push_back("-pedantic-errors");
342  if (!Opts.ShowColumn)
343    Res.push_back("-fno-show-column");
344  if (!Opts.ShowLocation)
345    Res.push_back("-fno-show-source-location");
346  if (!Opts.ShowCarets)
347    Res.push_back("-fno-caret-diagnostics");
348  if (!Opts.ShowFixits)
349    Res.push_back("-fno-diagnostics-fixit-info");
350  if (Opts.ShowSourceRanges)
351    Res.push_back("-fdiagnostics-print-source-range-info");
352  if (Opts.ShowParseableFixits)
353    Res.push_back("-fdiagnostics-parseable-fixits");
354  if (Opts.ShowColors)
355    Res.push_back("-fcolor-diagnostics");
356  if (Opts.VerifyDiagnostics)
357    Res.push_back("-verify");
358  if (Opts.ShowOptionNames)
359    Res.push_back("-fdiagnostics-show-option");
360  if (Opts.ShowCategories == 1)
361    Res.push_back("-fdiagnostics-show-category=id");
362  else if (Opts.ShowCategories == 2)
363    Res.push_back("-fdiagnostics-show-category=name");
364  switch (Opts.Format) {
365  case DiagnosticOptions::Clang:
366    Res.push_back("-fdiagnostics-format=clang"); break;
367  case DiagnosticOptions::Msvc:
368    Res.push_back("-fdiagnostics-format=msvc");  break;
369  case DiagnosticOptions::Vi:
370    Res.push_back("-fdiagnostics-format=vi");    break;
371  }
372  if (Opts.ErrorLimit)
373    Res.push_back("-ferror-limit", llvm::utostr(Opts.ErrorLimit));
374  if (!Opts.DiagnosticLogFile.empty())
375    Res.push_back("-diagnostic-log-file", Opts.DiagnosticLogFile);
376  if (Opts.MacroBacktraceLimit
377                        != DiagnosticOptions::DefaultMacroBacktraceLimit)
378    Res.push_back("-fmacro-backtrace-limit",
379                  llvm::utostr(Opts.MacroBacktraceLimit));
380  if (Opts.TemplateBacktraceLimit
381                        != DiagnosticOptions::DefaultTemplateBacktraceLimit)
382    Res.push_back("-ftemplate-backtrace-limit",
383                  llvm::utostr(Opts.TemplateBacktraceLimit));
384  if (Opts.ConstexprBacktraceLimit
385                        != DiagnosticOptions::DefaultConstexprBacktraceLimit)
386    Res.push_back("-fconstexpr-backtrace-limit",
387                  llvm::utostr(Opts.ConstexprBacktraceLimit));
388
389  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop)
390    Res.push_back("-ftabstop", llvm::utostr(Opts.TabStop));
391  if (Opts.MessageLength)
392    Res.push_back("-fmessage-length", llvm::utostr(Opts.MessageLength));
393  if (!Opts.DumpBuildInformation.empty())
394    Res.push_back("-dump-build-information", Opts.DumpBuildInformation);
395  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
396    Res.push_back("-W" + Opts.Warnings[i]);
397}
398
399static const char *getInputKindName(InputKind Kind) {
400  switch (Kind) {
401  case IK_None:              break;
402  case IK_AST:               return "ast";
403  case IK_Asm:               return "assembler-with-cpp";
404  case IK_C:                 return "c";
405  case IK_CXX:               return "c++";
406  case IK_LLVM_IR:           return "ir";
407  case IK_ObjC:              return "objective-c";
408  case IK_ObjCXX:            return "objective-c++";
409  case IK_OpenCL:            return "cl";
410  case IK_CUDA:              return "cuda";
411  case IK_PreprocessedC:     return "cpp-output";
412  case IK_PreprocessedCXX:   return "c++-cpp-output";
413  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
414  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
415  }
416
417  llvm_unreachable("Unexpected language kind!");
418}
419
420static const char *getActionName(frontend::ActionKind Kind) {
421  switch (Kind) {
422  case frontend::PluginAction:
423    llvm_unreachable("Invalid kind!");
424
425  case frontend::ASTDump:                return "-ast-dump";
426  case frontend::ASTDumpXML:             return "-ast-dump-xml";
427  case frontend::ASTPrint:               return "-ast-print";
428  case frontend::ASTView:                return "-ast-view";
429  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
430  case frontend::DumpTokens:             return "-dump-tokens";
431  case frontend::EmitAssembly:           return "-S";
432  case frontend::EmitBC:                 return "-emit-llvm-bc";
433  case frontend::EmitHTML:               return "-emit-html";
434  case frontend::EmitLLVM:               return "-emit-llvm";
435  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
436  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
437  case frontend::EmitObj:                return "-emit-obj";
438  case frontend::FixIt:                  return "-fixit";
439  case frontend::GenerateModule:         return "-emit-module";
440  case frontend::GeneratePCH:            return "-emit-pch";
441  case frontend::GeneratePTH:            return "-emit-pth";
442  case frontend::InitOnly:               return "-init-only";
443  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
444  case frontend::PrintDeclContext:       return "-print-decl-contexts";
445  case frontend::PrintPreamble:          return "-print-preamble";
446  case frontend::PrintPreprocessedInput: return "-E";
447  case frontend::RewriteMacros:          return "-rewrite-macros";
448  case frontend::RewriteObjC:            return "-rewrite-objc";
449  case frontend::RewriteTest:            return "-rewrite-test";
450  case frontend::RunAnalysis:            return "-analyze";
451  case frontend::MigrateSource:          return "-migrate";
452  case frontend::RunPreprocessorOnly:    return "-Eonly";
453  }
454
455  llvm_unreachable("Unexpected language kind!");
456}
457
458static void FileSystemOptsToArgs(const FileSystemOptions &Opts, ToArgsList &Res){
459  if (!Opts.WorkingDir.empty())
460    Res.push_back("-working-directory", Opts.WorkingDir);
461}
462
463static void FrontendOptsToArgs(const FrontendOptions &Opts, ToArgsList &Res) {
464  if (Opts.DisableFree)
465    Res.push_back("-disable-free");
466  if (Opts.RelocatablePCH)
467    Res.push_back("-relocatable-pch");
468  if (Opts.ShowHelp)
469    Res.push_back("-help");
470  if (Opts.ShowMacrosInCodeCompletion)
471    Res.push_back("-code-completion-macros");
472  if (Opts.ShowCodePatternsInCodeCompletion)
473    Res.push_back("-code-completion-patterns");
474  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
475    Res.push_back("-no-code-completion-globals");
476  if (Opts.ShowStats)
477    Res.push_back("-print-stats");
478  if (Opts.ShowTimers)
479    Res.push_back("-ftime-report");
480  if (Opts.ShowVersion)
481    Res.push_back("-version");
482  if (Opts.FixWhatYouCan)
483    Res.push_back("-fix-what-you-can");
484  if (Opts.FixOnlyWarnings)
485    Res.push_back("-fix-only-warnings");
486  if (Opts.FixAndRecompile)
487    Res.push_back("-fixit-recompile");
488  if (Opts.FixToTemporaries)
489    Res.push_back("-fixit-to-temporary");
490  switch (Opts.ARCMTAction) {
491  case FrontendOptions::ARCMT_None:
492    break;
493  case FrontendOptions::ARCMT_Check:
494    Res.push_back("-arcmt-check");
495    break;
496  case FrontendOptions::ARCMT_Modify:
497    Res.push_back("-arcmt-modify");
498    break;
499  case FrontendOptions::ARCMT_Migrate:
500    Res.push_back("-arcmt-migrate");
501    break;
502  }
503  if (!Opts.MTMigrateDir.empty())
504    Res.push_back("-mt-migrate-directory", Opts.MTMigrateDir);
505  if (!Opts.ARCMTMigrateReportOut.empty())
506    Res.push_back("-arcmt-migrate-report-output", Opts.ARCMTMigrateReportOut);
507  if (Opts.ARCMTMigrateEmitARCErrors)
508    Res.push_back("-arcmt-migrate-emit-errors");
509
510  if (Opts.ObjCMTAction & ~FrontendOptions::ObjCMT_Literals)
511    Res.push_back("-objcmt-migrate-literals");
512  if (Opts.ObjCMTAction & ~FrontendOptions::ObjCMT_Subscripting)
513    Res.push_back("-objcmt-migrate-subscripting");
514
515  bool NeedLang = false;
516  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
517    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].File) !=
518        Opts.Inputs[i].Kind)
519      NeedLang = true;
520  if (NeedLang)
521    Res.push_back("-x", getInputKindName(Opts.Inputs[0].Kind));
522  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
523    assert((!NeedLang || Opts.Inputs[i].Kind == Opts.Inputs[0].Kind) &&
524           "Unable to represent this input vector!");
525    Res.push_back(Opts.Inputs[i].File);
526  }
527
528  if (!Opts.OutputFile.empty())
529    Res.push_back("-o", Opts.OutputFile);
530  if (!Opts.CodeCompletionAt.FileName.empty())
531    Res.push_back("-code-completion-at",
532                  Opts.CodeCompletionAt.FileName + ":" +
533                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
534                  llvm::utostr(Opts.CodeCompletionAt.Column));
535  if (Opts.ProgramAction != frontend::PluginAction)
536    Res.push_back(getActionName(Opts.ProgramAction));
537  if (!Opts.ActionName.empty()) {
538    Res.push_back("-plugin", Opts.ActionName);
539    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i)
540      Res.push_back("-plugin-arg-" + Opts.ActionName, Opts.PluginArgs[i]);
541  }
542  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i)
543    Res.push_back("-load", Opts.Plugins[i]);
544  for (unsigned i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
545    Res.push_back("-add-plugin", Opts.AddPluginActions[i]);
546    for(unsigned ai = 0, ae = Opts.AddPluginArgs.size(); ai != ae; ++ai)
547      Res.push_back("-plugin-arg-" + Opts.AddPluginActions[i],
548                    Opts.AddPluginArgs[i][ai]);
549  }
550  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i)
551    Res.push_back("-ast-merge", Opts.ASTMergeFiles[i]);
552  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i)
553    Res.push_back("-mllvm", Opts.LLVMArgs[i]);
554  if (!Opts.OverrideRecordLayoutsFile.empty())
555    Res.push_back("-foverride-record-layout=" + Opts.OverrideRecordLayoutsFile);
556}
557
558static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
559                                   ToArgsList &Res) {
560  if (Opts.Sysroot != "/") {
561    Res.push_back("-isysroot");
562    Res.push_back(Opts.Sysroot);
563  }
564
565  /// User specified include entries.
566  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
567    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
568    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
569      llvm::report_fatal_error("Invalid option set!");
570    if (E.IsUserSupplied) {
571      switch (E.Group) {
572      case frontend::After:
573        Res.push_back("-idirafter");
574        break;
575
576      case frontend::Quoted:
577        Res.push_back("-iquote");
578        break;
579
580      case frontend::System:
581        Res.push_back("-isystem");
582        break;
583
584      case frontend::IndexHeaderMap:
585        Res.push_back("-index-header-map");
586        Res.push_back(E.IsFramework? "-F" : "-I");
587        break;
588
589      case frontend::CSystem:
590        Res.push_back("-c-isystem");
591        break;
592
593      case frontend::CXXSystem:
594        Res.push_back("-cxx-isystem");
595        break;
596
597      case frontend::ObjCSystem:
598        Res.push_back("-objc-isystem");
599        break;
600
601      case frontend::ObjCXXSystem:
602        Res.push_back("-objcxx-isystem");
603        break;
604
605      case frontend::Angled:
606        Res.push_back(E.IsFramework ? "-F" : "-I");
607        break;
608      }
609    } else {
610      if (E.IsInternal) {
611        assert(E.Group == frontend::System && "Unexpected header search group");
612        if (E.ImplicitExternC)
613          Res.push_back("-internal-externc-isystem");
614        else
615          Res.push_back("-internal-isystem");
616      } else {
617        if (E.Group != frontend::Angled && E.Group != frontend::System)
618          llvm::report_fatal_error("Invalid option set!");
619        Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
620                      "-iwithprefix");
621      }
622    }
623    Res.push_back(E.Path);
624  }
625
626  /// User-specified system header prefixes.
627  for (unsigned i = 0, e = Opts.SystemHeaderPrefixes.size(); i != e; ++i) {
628    if (Opts.SystemHeaderPrefixes[i].IsSystemHeader)
629      Res.push_back("-isystem-prefix");
630    else
631      Res.push_back("-ino-system-prefix");
632
633    Res.push_back(Opts.SystemHeaderPrefixes[i].Prefix);
634  }
635
636  if (!Opts.ResourceDir.empty())
637    Res.push_back("-resource-dir", Opts.ResourceDir);
638  if (!Opts.ModuleCachePath.empty())
639    Res.push_back("-fmodule-cache-path", Opts.ModuleCachePath);
640  if (!Opts.UseStandardSystemIncludes)
641    Res.push_back("-nostdsysteminc");
642  if (!Opts.UseStandardCXXIncludes)
643    Res.push_back("-nostdinc++");
644  if (Opts.UseLibcxx)
645    Res.push_back("-stdlib=libc++");
646  if (Opts.Verbose)
647    Res.push_back("-v");
648}
649
650static void LangOptsToArgs(const LangOptions &Opts, ToArgsList &Res) {
651  LangOptions DefaultLangOpts;
652
653  // FIXME: Need to set -std to get all the implicit options.
654
655  // FIXME: We want to only pass options relative to the defaults, which
656  // requires constructing a target. :(
657  //
658  // It would be better to push the all target specific choices into the driver,
659  // so that everything below that was more uniform.
660
661  if (Opts.Trigraphs)
662    Res.push_back("-trigraphs");
663  // Implicit based on the input kind:
664  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
665  // Implicit based on the input language standard:
666  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
667  if (Opts.DollarIdents)
668    Res.push_back("-fdollars-in-identifiers");
669  if (Opts.GNUMode && !Opts.GNUKeywords)
670    Res.push_back("-fno-gnu-keywords");
671  if (!Opts.GNUMode && Opts.GNUKeywords)
672    Res.push_back("-fgnu-keywords");
673  if (Opts.MicrosoftExt)
674    Res.push_back("-fms-extensions");
675  if (Opts.MicrosoftMode)
676    Res.push_back("-fms-compatibility");
677  if (Opts.MSCVersion != 0)
678    Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
679  if (Opts.Borland)
680    Res.push_back("-fborland-extensions");
681  if (!Opts.ObjCNonFragileABI)
682    Res.push_back("-fobjc-fragile-abi");
683  if (Opts.ObjCDefaultSynthProperties)
684    Res.push_back("-fobjc-default-synthesize-properties");
685  // NoInline is implicit.
686  if (!Opts.CXXOperatorNames)
687    Res.push_back("-fno-operator-names");
688  if (Opts.PascalStrings)
689    Res.push_back("-fpascal-strings");
690  if (Opts.CatchUndefined)
691    Res.push_back("-fcatch-undefined-behavior");
692  if (Opts.AddressSanitizer)
693    Res.push_back("-faddress-sanitizer");
694  if (Opts.ThreadSanitizer)
695    Res.push_back("-fthread-sanitizer");
696  if (Opts.WritableStrings)
697    Res.push_back("-fwritable-strings");
698  if (Opts.ConstStrings)
699    Res.push_back("-fconst-strings");
700  if (!Opts.LaxVectorConversions)
701    Res.push_back("-fno-lax-vector-conversions");
702  if (Opts.AltiVec)
703    Res.push_back("-faltivec");
704  if (Opts.Exceptions)
705    Res.push_back("-fexceptions");
706  if (Opts.ObjCExceptions)
707    Res.push_back("-fobjc-exceptions");
708  if (Opts.CXXExceptions)
709    Res.push_back("-fcxx-exceptions");
710  if (Opts.SjLjExceptions)
711    Res.push_back("-fsjlj-exceptions");
712  if (Opts.TraditionalCPP)
713    Res.push_back("-traditional-cpp");
714  if (!Opts.RTTI)
715    Res.push_back("-fno-rtti");
716  if (Opts.MSBitfields)
717    Res.push_back("-mms-bitfields");
718  if (!Opts.NeXTRuntime)
719    Res.push_back("-fgnu-runtime");
720  if (Opts.Freestanding)
721    Res.push_back("-ffreestanding");
722  if (Opts.NoBuiltin)
723    Res.push_back("-fno-builtin");
724  if (!Opts.AssumeSaneOperatorNew)
725    Res.push_back("-fno-assume-sane-operator-new");
726  if (!Opts.ThreadsafeStatics)
727    Res.push_back("-fno-threadsafe-statics");
728  if (Opts.POSIXThreads)
729    Res.push_back("-pthread");
730  if (Opts.Blocks)
731    Res.push_back("-fblocks");
732  if (Opts.BlocksRuntimeOptional)
733    Res.push_back("-fblocks-runtime-optional");
734  if (Opts.Modules)
735    Res.push_back("-fmodules");
736  if (Opts.EmitAllDecls)
737    Res.push_back("-femit-all-decls");
738  if (Opts.MathErrno)
739    Res.push_back("-fmath-errno");
740  switch (Opts.getSignedOverflowBehavior()) {
741  case LangOptions::SOB_Undefined: break;
742  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
743  case LangOptions::SOB_Trapping:
744    Res.push_back("-ftrapv");
745    if (!Opts.OverflowHandler.empty())
746      Res.push_back("-ftrapv-handler", Opts.OverflowHandler);
747    break;
748  }
749  if (Opts.HeinousExtensions)
750    Res.push_back("-fheinous-gnu-extensions");
751  // Optimize is implicit.
752  // OptimizeSize is implicit.
753  if (Opts.FastMath)
754    Res.push_back("-ffast-math");
755  if (Opts.Static)
756    Res.push_back("-static-define");
757  if (Opts.DumpRecordLayoutsSimple)
758    Res.push_back("-fdump-record-layouts-simple");
759  else if (Opts.DumpRecordLayouts)
760    Res.push_back("-fdump-record-layouts");
761  if (Opts.DumpVTableLayouts)
762    Res.push_back("-fdump-vtable-layouts");
763  if (Opts.NoBitFieldTypeAlign)
764    Res.push_back("-fno-bitfield-type-alignment");
765  if (Opts.PICLevel)
766    Res.push_back("-pic-level", llvm::utostr(Opts.PICLevel));
767  if (Opts.PIELevel)
768    Res.push_back("-pie-level", llvm::utostr(Opts.PIELevel));
769  if (Opts.ObjCGCBitmapPrint)
770    Res.push_back("-print-ivar-layout");
771  if (Opts.NoConstantCFStrings)
772    Res.push_back("-fno-constant-cfstrings");
773  if (!Opts.AccessControl)
774    Res.push_back("-fno-access-control");
775  if (!Opts.CharIsSigned)
776    Res.push_back("-fno-signed-char");
777  if (Opts.ShortWChar)
778    Res.push_back("-fshort-wchar");
779  if (!Opts.ElideConstructors)
780    Res.push_back("-fno-elide-constructors");
781  if (Opts.getGC() != LangOptions::NonGC) {
782    if (Opts.getGC() == LangOptions::HybridGC) {
783      Res.push_back("-fobjc-gc");
784    } else {
785      assert(Opts.getGC() == LangOptions::GCOnly && "Invalid GC mode!");
786      Res.push_back("-fobjc-gc-only");
787    }
788  }
789  if (Opts.ObjCAutoRefCount)
790    Res.push_back("-fobjc-arc");
791  if (Opts.ObjCRuntimeHasWeak)
792    Res.push_back("-fobjc-runtime-has-weak");
793  if (!Opts.ObjCInferRelatedResultType)
794    Res.push_back("-fno-objc-infer-related-result-type");
795
796  if (Opts.AppleKext)
797    Res.push_back("-fapple-kext");
798
799  if (Opts.getVisibilityMode() != DefaultVisibility) {
800    Res.push_back("-fvisibility");
801    if (Opts.getVisibilityMode() == HiddenVisibility) {
802      Res.push_back("hidden");
803    } else {
804      assert(Opts.getVisibilityMode() == ProtectedVisibility &&
805             "Invalid visibility!");
806      Res.push_back("protected");
807    }
808  }
809  if (Opts.InlineVisibilityHidden)
810    Res.push_back("-fvisibility-inlines-hidden");
811
812  if (Opts.getStackProtector() != 0)
813    Res.push_back("-stack-protector", llvm::utostr(Opts.getStackProtector()));
814  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth)
815    Res.push_back("-ftemplate-depth", llvm::utostr(Opts.InstantiationDepth));
816  if (Opts.ConstexprCallDepth != DefaultLangOpts.ConstexprCallDepth)
817    Res.push_back("-fconstexpr-depth", llvm::utostr(Opts.ConstexprCallDepth));
818  if (!Opts.ObjCConstantStringClass.empty())
819    Res.push_back("-fconstant-string-class", Opts.ObjCConstantStringClass);
820  if (Opts.FakeAddressSpaceMap)
821    Res.push_back("-ffake-address-space-map");
822  if (Opts.ParseUnknownAnytype)
823    Res.push_back("-funknown-anytype");
824  if (Opts.DebuggerSupport)
825    Res.push_back("-fdebugger-support");
826  if (Opts.DebuggerCastResultToId)
827    Res.push_back("-fdebugger-cast-result-to-id");
828  if (Opts.DebuggerObjCLiteral)
829    Res.push_back("-fdebugger-objc-literal");
830  if (Opts.DelayedTemplateParsing)
831    Res.push_back("-fdelayed-template-parsing");
832  if (Opts.Deprecated)
833    Res.push_back("-fdeprecated-macro");
834  if (Opts.ApplePragmaPack)
835    Res.push_back("-fapple-pragma-pack");
836  if (!Opts.CurrentModule.empty())
837    Res.push_back("-fmodule-name=" + Opts.CurrentModule);
838}
839
840static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
841                                   ToArgsList &Res) {
842  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
843    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
844                  Opts.Macros[i].first);
845  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
846    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
847    Res.push_back("-include", Opts.Includes[i]);
848  }
849  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i)
850    Res.push_back("-imacros", Opts.MacroIncludes[i]);
851  if (!Opts.UsePredefines)
852    Res.push_back("-undef");
853  if (Opts.DetailedRecord)
854    Res.push_back("-detailed-preprocessing-record");
855  if (!Opts.ImplicitPCHInclude.empty())
856    Res.push_back("-include-pch", Opts.ImplicitPCHInclude);
857  if (!Opts.ImplicitPTHInclude.empty())
858    Res.push_back("-include-pth", Opts.ImplicitPTHInclude);
859  if (!Opts.TokenCache.empty()) {
860    if (Opts.ImplicitPTHInclude.empty())
861      Res.push_back("-token-cache", Opts.TokenCache);
862    else
863      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
864             "Unsupported option combination!");
865  }
866  for (unsigned i = 0, e = Opts.ChainedIncludes.size(); i != e; ++i)
867    Res.push_back("-chain-include", Opts.ChainedIncludes[i]);
868  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
869    Res.push_back("-remap-file", Opts.RemappedFiles[i].first + ";" +
870                                 Opts.RemappedFiles[i].second);
871  }
872}
873
874static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
875                                         ToArgsList &Res) {
876  if (!Opts.ShowCPP && !Opts.ShowMacros)
877    llvm::report_fatal_error("Invalid option combination!");
878
879  if (Opts.ShowCPP && Opts.ShowMacros)
880    Res.push_back("-dD");
881  else if (!Opts.ShowCPP && Opts.ShowMacros)
882    Res.push_back("-dM");
883
884  if (!Opts.ShowLineMarkers)
885    Res.push_back("-P");
886  if (Opts.ShowComments)
887    Res.push_back("-C");
888  if (Opts.ShowMacroComments)
889    Res.push_back("-CC");
890}
891
892static void TargetOptsToArgs(const TargetOptions &Opts,
893                             ToArgsList &Res) {
894  Res.push_back("-triple");
895  Res.push_back(Opts.Triple);
896  if (!Opts.CPU.empty())
897    Res.push_back("-target-cpu", Opts.CPU);
898  if (!Opts.ABI.empty())
899    Res.push_back("-target-abi", Opts.ABI);
900  if (!Opts.LinkerVersion.empty())
901    Res.push_back("-target-linker-version", Opts.LinkerVersion);
902  if (!Opts.CXXABI.empty())
903    Res.push_back("-cxx-abi", Opts.CXXABI);
904  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i)
905    Res.push_back("-target-feature", Opts.Features[i]);
906}
907
908void CompilerInvocation::toArgs(std::vector<std::string> &Res) const {
909  ToArgsList List(Res);
910  AnalyzerOptsToArgs(getAnalyzerOpts(), List);
911  CodeGenOptsToArgs(getCodeGenOpts(), List);
912  DependencyOutputOptsToArgs(getDependencyOutputOpts(), List);
913  DiagnosticOptsToArgs(getDiagnosticOpts(), List);
914  FileSystemOptsToArgs(getFileSystemOpts(), List);
915  FrontendOptsToArgs(getFrontendOpts(), List);
916  HeaderSearchOptsToArgs(getHeaderSearchOpts(), List);
917  LangOptsToArgs(*getLangOpts(), List);
918  PreprocessorOptsToArgs(getPreprocessorOpts(), List);
919  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), List);
920  TargetOptsToArgs(getTargetOpts(), List);
921}
922
923//===----------------------------------------------------------------------===//
924// Deserialization (to args)
925//===----------------------------------------------------------------------===//
926
927using namespace clang::driver;
928using namespace clang::driver::options;
929
930//
931
932static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
933                                     DiagnosticsEngine &Diags) {
934  unsigned DefaultOpt = 0;
935  if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
936    DefaultOpt = 2;
937
938  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
939    if (A->getOption().matches(options::OPT_O0))
940      return 0;
941
942    assert (A->getOption().matches(options::OPT_O));
943
944    llvm::StringRef S(A->getValue(Args));
945    if (S == "s" || S == "z" || S.empty())
946      return 2;
947
948    return Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
949  }
950
951  return DefaultOpt;
952}
953
954static unsigned getOptimizationLevelSize(ArgList &Args, InputKind IK,
955                                         DiagnosticsEngine &Diags) {
956  if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
957    if (A->getOption().matches(options::OPT_O)) {
958      switch (A->getValue(Args)[0]) {
959      default:
960        return 0;
961      case 's':
962        return 1;
963      case 'z':
964        return 2;
965      }
966    }
967  }
968  return 0;
969}
970
971static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) {
972  for (arg_iterator I = Args.filtered_begin(OPT_W_Group),
973         E = Args.filtered_end(); I != E; ++I) {
974    Arg *A = *I;
975    // If the argument is a pure flag, add its name (minus the "-W" at the beginning)
976    // to the warning list. Else, add its value (for the OPT_W case).
977    if (A->getOption().getKind() == Option::FlagClass) {
978      Warnings.push_back(A->getOption().getName().substr(2));
979    } else {
980      for (unsigned Idx = 0, End = A->getNumValues();
981           Idx < End; ++Idx) {
982        StringRef V = A->getValue(Args, Idx);
983        // "-Wl," and such are not warning options.
984        // FIXME: Should be handled by putting these in separate flags.
985        if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,"))
986          continue;
987
988        Warnings.push_back(V);
989      }
990    }
991  }
992}
993
994static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
995                              DiagnosticsEngine &Diags) {
996  using namespace options;
997  bool Success = true;
998  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
999    StringRef Name = A->getValue(Args);
1000    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
1001#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
1002      .Case(CMDFLAG, NAME##Model)
1003#include "clang/Frontend/Analyses.def"
1004      .Default(NumStores);
1005    if (Value == NumStores) {
1006      Diags.Report(diag::err_drv_invalid_value)
1007        << A->getAsString(Args) << Name;
1008      Success = false;
1009    } else {
1010      Opts.AnalysisStoreOpt = Value;
1011    }
1012  }
1013
1014  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
1015    StringRef Name = A->getValue(Args);
1016    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
1017#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
1018      .Case(CMDFLAG, NAME##Model)
1019#include "clang/Frontend/Analyses.def"
1020      .Default(NumConstraints);
1021    if (Value == NumConstraints) {
1022      Diags.Report(diag::err_drv_invalid_value)
1023        << A->getAsString(Args) << Name;
1024      Success = false;
1025    } else {
1026      Opts.AnalysisConstraintsOpt = Value;
1027    }
1028  }
1029
1030  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
1031    StringRef Name = A->getValue(Args);
1032    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
1033#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
1034      .Case(CMDFLAG, PD_##NAME)
1035#include "clang/Frontend/Analyses.def"
1036      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
1037    if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
1038      Diags.Report(diag::err_drv_invalid_value)
1039        << A->getAsString(Args) << Name;
1040      Success = false;
1041    } else {
1042      Opts.AnalysisDiagOpt = Value;
1043    }
1044  }
1045
1046  if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
1047    StringRef Name = A->getValue(Args);
1048    AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
1049#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
1050      .Case(CMDFLAG, NAME)
1051#include "clang/Frontend/Analyses.def"
1052      .Default(NumPurgeModes);
1053    if (Value == NumPurgeModes) {
1054      Diags.Report(diag::err_drv_invalid_value)
1055        << A->getAsString(Args) << Name;
1056      Success = false;
1057    } else {
1058      Opts.AnalysisPurgeOpt = Value;
1059    }
1060  }
1061
1062  if (Arg *A = Args.getLastArg(OPT_analyzer_ipa)) {
1063    StringRef Name = A->getValue(Args);
1064    AnalysisIPAMode Value = llvm::StringSwitch<AnalysisIPAMode>(Name)
1065#define ANALYSIS_IPA(NAME, CMDFLAG, DESC) \
1066      .Case(CMDFLAG, NAME)
1067#include "clang/Frontend/Analyses.def"
1068      .Default(NumIPAModes);
1069    if (Value == NumIPAModes) {
1070      Diags.Report(diag::err_drv_invalid_value)
1071        << A->getAsString(Args) << Name;
1072      Success = false;
1073    } else {
1074      Opts.IPAMode = Value;
1075    }
1076  }
1077
1078  if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
1079    StringRef Name = A->getValue(Args);
1080    AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
1081#define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
1082      .Case(CMDFLAG, NAME)
1083#include "clang/Frontend/Analyses.def"
1084      .Default(NumInliningModes);
1085    if (Value == NumInliningModes) {
1086      Diags.Report(diag::err_drv_invalid_value)
1087        << A->getAsString(Args) << Name;
1088      Success = false;
1089    } else {
1090      Opts.InliningMode = Value;
1091    }
1092  }
1093
1094  Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
1095  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
1096  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
1097  Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
1098  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
1099  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
1100  Opts.AnalyzeNestedBlocks =
1101    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
1102  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
1103  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
1104  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
1105  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
1106  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
1107  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
1108  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
1109  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
1110  Opts.EagerlyTrimEGraph = !Args.hasArg(OPT_analyzer_no_eagerly_trim_egraph);
1111  Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
1112  Opts.InlineMaxStackDepth =
1113    Args.getLastArgIntValue(OPT_analyzer_inline_max_stack_depth,
1114                            Opts.InlineMaxStackDepth, Diags);
1115  Opts.InlineMaxFunctionSize =
1116    Args.getLastArgIntValue(OPT_analyzer_inline_max_function_size,
1117                            Opts.InlineMaxFunctionSize, Diags);
1118
1119  Opts.CheckersControlList.clear();
1120  for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
1121                                             OPT_analyzer_disable_checker),
1122         ie = Args.filtered_end(); it != ie; ++it) {
1123    const Arg *A = *it;
1124    A->claim();
1125    bool enable = (A->getOption().getID() == OPT_analyzer_checker);
1126    // We can have a list of comma separated checker names, e.g:
1127    // '-analyzer-checker=cocoa,unix'
1128    StringRef checkerList = A->getValue(Args);
1129    SmallVector<StringRef, 4> checkers;
1130    checkerList.split(checkers, ",");
1131    for (unsigned i = 0, e = checkers.size(); i != e; ++i)
1132      Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
1133  }
1134
1135  return Success;
1136}
1137
1138static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
1139  Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
1140  Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
1141  return true;
1142}
1143
1144static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
1145                             DiagnosticsEngine &Diags) {
1146  using namespace options;
1147  bool Success = true;
1148
1149  unsigned OptLevel = getOptimizationLevel(Args, IK, Diags);
1150  if (OptLevel > 3) {
1151    Diags.Report(diag::err_drv_invalid_value)
1152      << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel;
1153    OptLevel = 3;
1154    Success = false;
1155  }
1156  Opts.OptimizationLevel = OptLevel;
1157
1158  // We must always run at least the always inlining pass.
1159  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
1160    : CodeGenOptions::OnlyAlwaysInlining;
1161  // -fno-inline-functions overrides OptimizationLevel > 1.
1162  Opts.NoInline = Args.hasArg(OPT_fno_inline);
1163  Opts.Inlining = Args.hasArg(OPT_fno_inline_functions) ?
1164    CodeGenOptions::OnlyAlwaysInlining : Opts.Inlining;
1165
1166  if (Args.hasArg(OPT_gline_tables_only)) {
1167    Opts.DebugInfo = CodeGenOptions::DebugLineTablesOnly;
1168  } else if (Args.hasArg(OPT_g_Flag)) {
1169    if (Args.hasFlag(OPT_flimit_debug_info, OPT_fno_limit_debug_info, true))
1170      Opts.DebugInfo = CodeGenOptions::LimitedDebugInfo;
1171    else
1172      Opts.DebugInfo = CodeGenOptions::FullDebugInfo;
1173  }
1174
1175  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
1176  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
1177  Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
1178  Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
1179    OPT_fuse_register_sized_bitfield_access);
1180  Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
1181  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
1182  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
1183  Opts.NoCommon = Args.hasArg(OPT_fno_common);
1184  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
1185  Opts.OptimizeSize = getOptimizationLevelSize(Args, IK, Diags);
1186  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
1187                            Args.hasArg(OPT_ffreestanding));
1188  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
1189                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
1190
1191  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
1192  Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
1193  Opts.ObjCRuntimeHasARC = Args.hasArg(OPT_fobjc_runtime_has_arc);
1194  Opts.ObjCRuntimeHasTerminate = Args.hasArg(OPT_fobjc_runtime_has_terminate);
1195  Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
1196  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
1197  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
1198  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
1199  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
1200  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
1201  Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
1202  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
1203  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
1204  Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
1205  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
1206  Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
1207                       Args.hasArg(OPT_cl_finite_math_only)||
1208                       Args.hasArg(OPT_cl_fast_relaxed_math));
1209  Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
1210                       Args.hasArg(OPT_cl_finite_math_only)||
1211                       Args.hasArg(OPT_cl_fast_relaxed_math));
1212  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
1213  Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
1214  Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
1215  Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
1216  Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
1217  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
1218  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
1219  Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
1220  Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm);
1221  Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
1222  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
1223  Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
1224  Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
1225                      Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
1226                      Args.hasArg(OPT_cl_fast_relaxed_math);
1227  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
1228  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
1229  Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
1230  Opts.BoundsChecking = Args.getLastArgIntValue(OPT_fbounds_checking_EQ, 0,
1231                                                Diags);
1232  Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
1233
1234  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
1235  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
1236
1237  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
1238  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
1239
1240  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
1241  Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
1242  Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
1243  Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
1244  Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
1245  Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
1246  Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
1247  Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
1248  if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
1249    StringRef Val = A->getValue(Args);
1250    Val.getAsInteger(10, Opts.StackAlignment);
1251  }
1252
1253  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
1254    StringRef Name = A->getValue(Args);
1255    unsigned Method = llvm::StringSwitch<unsigned>(Name)
1256      .Case("legacy", CodeGenOptions::Legacy)
1257      .Case("non-legacy", CodeGenOptions::NonLegacy)
1258      .Case("mixed", CodeGenOptions::Mixed)
1259      .Default(~0U);
1260    if (Method == ~0U) {
1261      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1262      Success = false;
1263    } else {
1264      Opts.ObjCDispatchMethod = Method;
1265    }
1266  }
1267
1268  return Success;
1269}
1270
1271static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
1272                                      ArgList &Args) {
1273  using namespace options;
1274  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
1275  Opts.Targets = Args.getAllArgValues(OPT_MT);
1276  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
1277  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
1278  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1279  Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
1280  Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
1281  Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
1282}
1283
1284bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1285                                DiagnosticsEngine *Diags) {
1286  using namespace options;
1287  bool Success = true;
1288
1289  Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
1290  Opts.DiagnosticSerializationFile =
1291    Args.getLastArgValue(OPT_diagnostic_serialized_file);
1292  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
1293  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
1294  Opts.Pedantic = Args.hasArg(OPT_pedantic);
1295  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
1296  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
1297  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
1298  Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1299                                 OPT_fno_show_column,
1300                                 /*Default=*/true);
1301  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1302  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1303  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
1304
1305  // Default behavior is to not to show note include stacks.
1306  Opts.ShowNoteIncludeStack = false;
1307  if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1308                               OPT_fno_diagnostics_show_note_include_stack))
1309    if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1310      Opts.ShowNoteIncludeStack = true;
1311
1312  StringRef ShowOverloads =
1313    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1314  if (ShowOverloads == "best")
1315    Opts.ShowOverloads = DiagnosticsEngine::Ovl_Best;
1316  else if (ShowOverloads == "all")
1317    Opts.ShowOverloads = DiagnosticsEngine::Ovl_All;
1318  else {
1319    Success = false;
1320    if (Diags)
1321      Diags->Report(diag::err_drv_invalid_value)
1322      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1323      << ShowOverloads;
1324  }
1325
1326  StringRef ShowCategory =
1327    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1328  if (ShowCategory == "none")
1329    Opts.ShowCategories = 0;
1330  else if (ShowCategory == "id")
1331    Opts.ShowCategories = 1;
1332  else if (ShowCategory == "name")
1333    Opts.ShowCategories = 2;
1334  else {
1335    Success = false;
1336    if (Diags)
1337      Diags->Report(diag::err_drv_invalid_value)
1338      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1339      << ShowCategory;
1340  }
1341
1342  StringRef Format =
1343    Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1344  if (Format == "clang")
1345    Opts.Format = DiagnosticOptions::Clang;
1346  else if (Format == "msvc")
1347    Opts.Format = DiagnosticOptions::Msvc;
1348  else if (Format == "vi")
1349    Opts.Format = DiagnosticOptions::Vi;
1350  else {
1351    Success = false;
1352    if (Diags)
1353      Diags->Report(diag::err_drv_invalid_value)
1354      << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1355      << Format;
1356  }
1357
1358  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1359  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1360  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1361  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
1362  Opts.MacroBacktraceLimit
1363    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
1364                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1365  Opts.TemplateBacktraceLimit
1366    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
1367                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
1368                         Diags);
1369  Opts.ConstexprBacktraceLimit
1370    = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit,
1371                         DiagnosticOptions::DefaultConstexprBacktraceLimit,
1372                         Diags);
1373  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
1374                                    DiagnosticOptions::DefaultTabStop, Diags);
1375  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1376    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1377    if (Diags)
1378      Diags->Report(diag::warn_ignoring_ftabstop_value)
1379      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1380  }
1381  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
1382  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
1383  addWarningArgs(Args, Opts.Warnings);
1384
1385  return Success;
1386}
1387
1388static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1389  Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1390}
1391
1392static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1393                                   DiagnosticsEngine &Diags) {
1394  using namespace options;
1395  Opts.ProgramAction = frontend::ParseSyntaxOnly;
1396  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1397    switch (A->getOption().getID()) {
1398    default:
1399      llvm_unreachable("Invalid option in group!");
1400    case OPT_ast_dump:
1401      Opts.ProgramAction = frontend::ASTDump; break;
1402    case OPT_ast_dump_xml:
1403      Opts.ProgramAction = frontend::ASTDumpXML; break;
1404    case OPT_ast_print:
1405      Opts.ProgramAction = frontend::ASTPrint; break;
1406    case OPT_ast_view:
1407      Opts.ProgramAction = frontend::ASTView; break;
1408    case OPT_dump_raw_tokens:
1409      Opts.ProgramAction = frontend::DumpRawTokens; break;
1410    case OPT_dump_tokens:
1411      Opts.ProgramAction = frontend::DumpTokens; break;
1412    case OPT_S:
1413      Opts.ProgramAction = frontend::EmitAssembly; break;
1414    case OPT_emit_llvm_bc:
1415      Opts.ProgramAction = frontend::EmitBC; break;
1416    case OPT_emit_html:
1417      Opts.ProgramAction = frontend::EmitHTML; break;
1418    case OPT_emit_llvm:
1419      Opts.ProgramAction = frontend::EmitLLVM; break;
1420    case OPT_emit_llvm_only:
1421      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1422    case OPT_emit_codegen_only:
1423      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1424    case OPT_emit_obj:
1425      Opts.ProgramAction = frontend::EmitObj; break;
1426    case OPT_fixit_EQ:
1427      Opts.FixItSuffix = A->getValue(Args);
1428      // fall-through!
1429    case OPT_fixit:
1430      Opts.ProgramAction = frontend::FixIt; break;
1431    case OPT_emit_module:
1432      Opts.ProgramAction = frontend::GenerateModule; break;
1433    case OPT_emit_pch:
1434      Opts.ProgramAction = frontend::GeneratePCH; break;
1435    case OPT_emit_pth:
1436      Opts.ProgramAction = frontend::GeneratePTH; break;
1437    case OPT_init_only:
1438      Opts.ProgramAction = frontend::InitOnly; break;
1439    case OPT_fsyntax_only:
1440      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1441    case OPT_print_decl_contexts:
1442      Opts.ProgramAction = frontend::PrintDeclContext; break;
1443    case OPT_print_preamble:
1444      Opts.ProgramAction = frontend::PrintPreamble; break;
1445    case OPT_E:
1446      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1447    case OPT_rewrite_macros:
1448      Opts.ProgramAction = frontend::RewriteMacros; break;
1449    case OPT_rewrite_objc:
1450      Opts.ProgramAction = frontend::RewriteObjC; break;
1451    case OPT_rewrite_test:
1452      Opts.ProgramAction = frontend::RewriteTest; break;
1453    case OPT_analyze:
1454      Opts.ProgramAction = frontend::RunAnalysis; break;
1455    case OPT_migrate:
1456      Opts.ProgramAction = frontend::MigrateSource; break;
1457    case OPT_Eonly:
1458      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1459    }
1460  }
1461
1462  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1463    Opts.Plugins.push_back(A->getValue(Args,0));
1464    Opts.ProgramAction = frontend::PluginAction;
1465    Opts.ActionName = A->getValue(Args);
1466
1467    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1468           end = Args.filtered_end(); it != end; ++it) {
1469      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1470        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1471    }
1472  }
1473
1474  Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1475  Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
1476  for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
1477    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1478           end = Args.filtered_end(); it != end; ++it) {
1479      if ((*it)->getValue(Args, 0) == Opts.AddPluginActions[i])
1480        Opts.AddPluginArgs[i].push_back((*it)->getValue(Args, 1));
1481    }
1482  }
1483
1484  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1485    Opts.CodeCompletionAt =
1486      ParsedSourceLocation::FromString(A->getValue(Args));
1487    if (Opts.CodeCompletionAt.FileName.empty())
1488      Diags.Report(diag::err_drv_invalid_value)
1489        << A->getAsString(Args) << A->getValue(Args);
1490  }
1491  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1492
1493  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1494  Opts.Plugins = Args.getAllArgValues(OPT_load);
1495  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1496  Opts.ShowHelp = Args.hasArg(OPT_help);
1497  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1498  Opts.ShowCodePatternsInCodeCompletion
1499    = Args.hasArg(OPT_code_completion_patterns);
1500  Opts.ShowGlobalSymbolsInCodeCompletion
1501    = !Args.hasArg(OPT_no_code_completion_globals);
1502  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1503  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1504  Opts.ShowVersion = Args.hasArg(OPT_version);
1505  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1506  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1507  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1508  Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
1509  Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
1510  Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
1511  Opts.OverrideRecordLayoutsFile
1512    = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
1513  if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1514                                     OPT_arcmt_modify,
1515                                     OPT_arcmt_migrate)) {
1516    switch (A->getOption().getID()) {
1517    default:
1518      llvm_unreachable("missed a case");
1519    case OPT_arcmt_check:
1520      Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1521      break;
1522    case OPT_arcmt_modify:
1523      Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1524      break;
1525    case OPT_arcmt_migrate:
1526      Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1527      break;
1528    }
1529  }
1530  Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
1531  Opts.ARCMTMigrateReportOut
1532    = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1533  Opts.ARCMTMigrateEmitARCErrors
1534    = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1535
1536  if (Args.hasArg(OPT_objcmt_migrate_literals))
1537    Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
1538  if (Args.hasArg(OPT_objcmt_migrate_subscripting))
1539    Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
1540
1541  if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
1542      Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
1543    Diags.Report(diag::err_drv_argument_not_allowed_with)
1544      << "ARC migration" << "ObjC migration";
1545  }
1546
1547  InputKind DashX = IK_None;
1548  if (const Arg *A = Args.getLastArg(OPT_x)) {
1549    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1550      .Case("c", IK_C)
1551      .Case("cl", IK_OpenCL)
1552      .Case("cuda", IK_CUDA)
1553      .Case("c++", IK_CXX)
1554      .Case("objective-c", IK_ObjC)
1555      .Case("objective-c++", IK_ObjCXX)
1556      .Case("cpp-output", IK_PreprocessedC)
1557      .Case("assembler-with-cpp", IK_Asm)
1558      .Case("c++-cpp-output", IK_PreprocessedCXX)
1559      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1560      .Case("objc-cpp-output", IK_PreprocessedObjC)
1561      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1562      .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
1563      .Case("c-header", IK_C)
1564      .Case("cl-header", IK_OpenCL)
1565      .Case("objective-c-header", IK_ObjC)
1566      .Case("c++-header", IK_CXX)
1567      .Case("objective-c++-header", IK_ObjCXX)
1568      .Case("ast", IK_AST)
1569      .Case("ir", IK_LLVM_IR)
1570      .Default(IK_None);
1571    if (DashX == IK_None)
1572      Diags.Report(diag::err_drv_invalid_value)
1573        << A->getAsString(Args) << A->getValue(Args);
1574  }
1575
1576  // '-' is the default input if none is given.
1577  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1578  Opts.Inputs.clear();
1579  if (Inputs.empty())
1580    Inputs.push_back("-");
1581  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1582    InputKind IK = DashX;
1583    if (IK == IK_None) {
1584      IK = FrontendOptions::getInputKindForExtension(
1585        StringRef(Inputs[i]).rsplit('.').second);
1586      // FIXME: Remove this hack.
1587      if (i == 0)
1588        DashX = IK;
1589    }
1590    Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
1591  }
1592
1593  return DashX;
1594}
1595
1596std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1597                                                 void *MainAddr) {
1598  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1599
1600  if (!P.isEmpty()) {
1601    P.eraseComponent();  // Remove /clang from foo/bin/clang
1602    P.eraseComponent();  // Remove /bin   from foo/bin
1603
1604    // Get foo/lib/clang/<version>/include
1605    P.appendComponent("lib");
1606    P.appendComponent("clang");
1607    P.appendComponent(CLANG_VERSION_STRING);
1608  }
1609
1610  return P.str();
1611}
1612
1613static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1614  using namespace options;
1615  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1616  Opts.Verbose = Args.hasArg(OPT_v);
1617  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1618  Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1619  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1620  if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1621    Opts.UseLibcxx = (strcmp(A->getValue(Args), "libc++") == 0);
1622  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1623  Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodule_cache_path);
1624  Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1625
1626  // Add -I..., -F..., and -index-header-map options in order.
1627  bool IsIndexHeaderMap = false;
1628  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1629                                             OPT_index_header_map),
1630       ie = Args.filtered_end(); it != ie; ++it) {
1631    if ((*it)->getOption().matches(OPT_index_header_map)) {
1632      // -index-header-map applies to the next -I or -F.
1633      IsIndexHeaderMap = true;
1634      continue;
1635    }
1636
1637    frontend::IncludeDirGroup Group
1638      = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1639
1640    Opts.AddPath((*it)->getValue(Args), Group, true,
1641                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), false);
1642    IsIndexHeaderMap = false;
1643  }
1644
1645  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1646  StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1647  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1648                                             OPT_iwithprefixbefore),
1649         ie = Args.filtered_end(); it != ie; ++it) {
1650    const Arg *A = *it;
1651    if (A->getOption().matches(OPT_iprefix))
1652      Prefix = A->getValue(Args);
1653    else if (A->getOption().matches(OPT_iwithprefix))
1654      Opts.AddPath(Prefix.str() + A->getValue(Args),
1655                   frontend::System, false, false, false);
1656    else
1657      Opts.AddPath(Prefix.str() + A->getValue(Args),
1658                   frontend::Angled, false, false, false);
1659  }
1660
1661  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1662         ie = Args.filtered_end(); it != ie; ++it)
1663    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, false);
1664  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1665         ie = Args.filtered_end(); it != ie; ++it)
1666    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, false);
1667  for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1668         OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1669    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1670                 !(*it)->getOption().matches(OPT_iwithsysroot));
1671  for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1672         ie = Args.filtered_end(); it != ie; ++it)
1673    Opts.AddPath((*it)->getValue(Args), frontend::System, true, true,
1674                 true);
1675
1676  // Add the paths for the various language specific isystem flags.
1677  for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1678       ie = Args.filtered_end(); it != ie; ++it)
1679    Opts.AddPath((*it)->getValue(Args), frontend::CSystem, true, false, true);
1680  for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1681       ie = Args.filtered_end(); it != ie; ++it)
1682    Opts.AddPath((*it)->getValue(Args), frontend::CXXSystem, true, false, true);
1683  for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1684       ie = Args.filtered_end(); it != ie; ++it)
1685    Opts.AddPath((*it)->getValue(Args), frontend::ObjCSystem, true, false,true);
1686  for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1687       ie = Args.filtered_end(); it != ie; ++it)
1688    Opts.AddPath((*it)->getValue(Args), frontend::ObjCXXSystem, true, false,
1689                 true);
1690
1691  // Add the internal paths from a driver that detects standard include paths.
1692  for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1693                                            OPT_internal_externc_isystem),
1694                    E = Args.filtered_end();
1695       I != E; ++I)
1696    Opts.AddPath((*I)->getValue(Args), frontend::System,
1697                 false, false, /*IgnoreSysRoot=*/true, /*IsInternal=*/true,
1698                 (*I)->getOption().matches(OPT_internal_externc_isystem));
1699
1700  // Add the path prefixes which are implicitly treated as being system headers.
1701  for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix,
1702                                            OPT_ino_system_prefix),
1703                    E = Args.filtered_end();
1704       I != E; ++I)
1705    Opts.AddSystemHeaderPrefix((*I)->getValue(Args),
1706                               (*I)->getOption().matches(OPT_isystem_prefix));
1707}
1708
1709void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1710                                         LangStandard::Kind LangStd) {
1711  // Set some properties which depend solely on the input kind; it would be nice
1712  // to move these to the language standard, and have the driver resolve the
1713  // input kind + language standard.
1714  if (IK == IK_Asm) {
1715    Opts.AsmPreprocessor = 1;
1716  } else if (IK == IK_ObjC ||
1717             IK == IK_ObjCXX ||
1718             IK == IK_PreprocessedObjC ||
1719             IK == IK_PreprocessedObjCXX) {
1720    Opts.ObjC1 = Opts.ObjC2 = 1;
1721  }
1722
1723  if (LangStd == LangStandard::lang_unspecified) {
1724    // Based on the base language, pick one.
1725    switch (IK) {
1726    case IK_None:
1727    case IK_AST:
1728    case IK_LLVM_IR:
1729      llvm_unreachable("Invalid input kind!");
1730    case IK_OpenCL:
1731      LangStd = LangStandard::lang_opencl;
1732      break;
1733    case IK_CUDA:
1734      LangStd = LangStandard::lang_cuda;
1735      break;
1736    case IK_Asm:
1737    case IK_C:
1738    case IK_PreprocessedC:
1739    case IK_ObjC:
1740    case IK_PreprocessedObjC:
1741      LangStd = LangStandard::lang_gnu99;
1742      break;
1743    case IK_CXX:
1744    case IK_PreprocessedCXX:
1745    case IK_ObjCXX:
1746    case IK_PreprocessedObjCXX:
1747      LangStd = LangStandard::lang_gnucxx98;
1748      break;
1749    }
1750  }
1751
1752  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1753  Opts.BCPLComment = Std.hasBCPLComments();
1754  Opts.C99 = Std.isC99();
1755  Opts.C11 = Std.isC11();
1756  Opts.CPlusPlus = Std.isCPlusPlus();
1757  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1758  Opts.Digraphs = Std.hasDigraphs();
1759  Opts.GNUMode = Std.isGNUMode();
1760  Opts.GNUInline = !Std.isC99();
1761  Opts.HexFloats = Std.hasHexFloats();
1762  Opts.ImplicitInt = Std.hasImplicitInt();
1763
1764  // Set OpenCL Version.
1765  if (LangStd == LangStandard::lang_opencl) {
1766    Opts.OpenCL = 1;
1767    Opts.OpenCLVersion = 100;
1768  }
1769  else if (LangStd == LangStandard::lang_opencl11) {
1770      Opts.OpenCL = 1;
1771      Opts.OpenCLVersion = 110;
1772  }
1773  else if (LangStd == LangStandard::lang_opencl12) {
1774    Opts.OpenCL = 1;
1775    Opts.OpenCLVersion = 120;
1776  }
1777
1778  // OpenCL has some additional defaults.
1779  if (Opts.OpenCL) {
1780    Opts.AltiVec = 0;
1781    Opts.CXXOperatorNames = 1;
1782    Opts.LaxVectorConversions = 0;
1783    Opts.DefaultFPContract = 1;
1784  }
1785
1786  if (LangStd == LangStandard::lang_cuda)
1787    Opts.CUDA = 1;
1788
1789  // OpenCL and C++ both have bool, true, false keywords.
1790  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1791
1792  Opts.GNUKeywords = Opts.GNUMode;
1793  Opts.CXXOperatorNames = Opts.CPlusPlus;
1794
1795  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1796  // is specified, or -std is set to a conforming mode.
1797  Opts.Trigraphs = !Opts.GNUMode;
1798
1799  Opts.DollarIdents = !Opts.AsmPreprocessor;
1800}
1801
1802static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1803                          DiagnosticsEngine &Diags) {
1804  // FIXME: Cleanup per-file based stuff.
1805  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1806  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1807    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1808#define LANGSTANDARD(id, name, desc, features) \
1809      .Case(name, LangStandard::lang_##id)
1810#include "clang/Frontend/LangStandards.def"
1811      .Default(LangStandard::lang_unspecified);
1812    if (LangStd == LangStandard::lang_unspecified)
1813      Diags.Report(diag::err_drv_invalid_value)
1814        << A->getAsString(Args) << A->getValue(Args);
1815    else {
1816      // Valid standard, check to make sure language and standard are compatable.
1817      const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1818      switch (IK) {
1819      case IK_C:
1820      case IK_ObjC:
1821      case IK_PreprocessedC:
1822      case IK_PreprocessedObjC:
1823        if (!(Std.isC89() || Std.isC99()))
1824          Diags.Report(diag::err_drv_argument_not_allowed_with)
1825            << A->getAsString(Args) << "C/ObjC";
1826        break;
1827      case IK_CXX:
1828      case IK_ObjCXX:
1829      case IK_PreprocessedCXX:
1830      case IK_PreprocessedObjCXX:
1831        if (!Std.isCPlusPlus())
1832          Diags.Report(diag::err_drv_argument_not_allowed_with)
1833            << A->getAsString(Args) << "C++/ObjC++";
1834        break;
1835      case IK_OpenCL:
1836        if (!Std.isC99())
1837          Diags.Report(diag::err_drv_argument_not_allowed_with)
1838            << A->getAsString(Args) << "OpenCL";
1839        break;
1840      case IK_CUDA:
1841        if (!Std.isCPlusPlus())
1842          Diags.Report(diag::err_drv_argument_not_allowed_with)
1843            << A->getAsString(Args) << "CUDA";
1844        break;
1845      default:
1846        break;
1847      }
1848    }
1849  }
1850
1851  if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1852    if (strcmp(A->getValue(Args), "CL1.1") != 0) {
1853      Diags.Report(diag::err_drv_invalid_value)
1854        << A->getAsString(Args) << A->getValue(Args);
1855    }
1856  }
1857
1858  CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1859
1860  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1861  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1862  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1863  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1864  // name, as it doesn't seem a useful distinction.
1865  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1866                                  Opts.GNUKeywords);
1867
1868  if (Args.hasArg(OPT_fno_operator_names))
1869    Opts.CXXOperatorNames = 0;
1870
1871  if (Opts.ObjC1) {
1872    if (Args.hasArg(OPT_fobjc_gc_only))
1873      Opts.setGC(LangOptions::GCOnly);
1874    else if (Args.hasArg(OPT_fobjc_gc))
1875      Opts.setGC(LangOptions::HybridGC);
1876    else if (Args.hasArg(OPT_fobjc_arc)) {
1877      Opts.ObjCAutoRefCount = 1;
1878      if (Args.hasArg(OPT_fobjc_fragile_abi))
1879        Diags.Report(diag::err_arc_nonfragile_abi);
1880    }
1881
1882    if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1883      Opts.ObjCRuntimeHasWeak = 1;
1884
1885    if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1886      Opts.ObjCInferRelatedResultType = 0;
1887  }
1888
1889  if (Args.hasArg(OPT_fgnu89_inline))
1890    Opts.GNUInline = 1;
1891
1892  if (Args.hasArg(OPT_fapple_kext)) {
1893    if (!Opts.CPlusPlus)
1894      Diags.Report(diag::warn_c_kext);
1895    else
1896      Opts.AppleKext = 1;
1897  }
1898
1899  if (Args.hasArg(OPT_print_ivar_layout))
1900    Opts.ObjCGCBitmapPrint = 1;
1901  if (Args.hasArg(OPT_fno_constant_cfstrings))
1902    Opts.NoConstantCFStrings = 1;
1903
1904  if (Args.hasArg(OPT_faltivec))
1905    Opts.AltiVec = 1;
1906
1907  if (Args.hasArg(OPT_pthread))
1908    Opts.POSIXThreads = 1;
1909
1910  if (Args.hasArg(OPT_fdelayed_template_parsing))
1911    Opts.DelayedTemplateParsing = 1;
1912
1913  StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1914  if (Vis == "default")
1915    Opts.setVisibilityMode(DefaultVisibility);
1916  else if (Vis == "hidden")
1917    Opts.setVisibilityMode(HiddenVisibility);
1918  else if (Vis == "protected")
1919    // FIXME: diagnose if target does not support protected visibility
1920    Opts.setVisibilityMode(ProtectedVisibility);
1921  else
1922    Diags.Report(diag::err_drv_invalid_value)
1923      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1924
1925  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1926    Opts.InlineVisibilityHidden = 1;
1927
1928  if (Args.hasArg(OPT_ftrapv)) {
1929    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1930    // Set the handler, if one is specified.
1931    Opts.OverflowHandler =
1932        Args.getLastArgValue(OPT_ftrapv_handler);
1933  }
1934  else if (Args.hasArg(OPT_fwrapv))
1935    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1936
1937  if (Args.hasArg(OPT_trigraphs))
1938    Opts.Trigraphs = 1;
1939
1940  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1941                                   OPT_fno_dollars_in_identifiers,
1942                                   Opts.DollarIdents);
1943  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1944  Opts.MicrosoftExt
1945    = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility);
1946  Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility);
1947  Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1948  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1949  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1950  Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1951                                   Opts.ConstStrings);
1952  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1953    Opts.LaxVectorConversions = 0;
1954  if (Args.hasArg(OPT_fno_threadsafe_statics))
1955    Opts.ThreadsafeStatics = 0;
1956  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1957  Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1958  Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1959  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1960  Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1961
1962  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1963  Opts.Blocks = Args.hasArg(OPT_fblocks);
1964  Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1965  Opts.Modules = Args.hasArg(OPT_fmodules);
1966  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1967  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1968  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1969  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1970  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1971  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1972  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1973  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1974  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1975  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1976  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1977                                                    Diags);
1978  Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512,
1979                                                    Diags);
1980  Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1981  Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy_EQ,
1982                                                    0, Diags);
1983  Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1984  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1985  Opts.ObjCConstantStringClass =
1986    Args.getLastArgValue(OPT_fconstant_string_class);
1987  Opts.ObjCNonFragileABI = !Args.hasArg(OPT_fobjc_fragile_abi);
1988  if (Opts.ObjCNonFragileABI)
1989    Opts.ObjCNonFragileABI2 = true;
1990  Opts.ObjCDefaultSynthProperties =
1991    Args.hasArg(OPT_fobjc_default_synthesize_properties);
1992  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1993  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1994  Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct_EQ, 0, Diags);
1995  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1996  Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags);
1997  Opts.Static = Args.hasArg(OPT_static_define);
1998  Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1999  Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
2000                        || Args.hasArg(OPT_fdump_record_layouts);
2001  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
2002  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
2003  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
2004  Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
2005  Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
2006  Opts.MRTD = Args.hasArg(OPT_mrtd);
2007  Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
2008  Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
2009  Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
2010  Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
2011  Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
2012  Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
2013  Opts.AddressSanitizer = Args.hasArg(OPT_faddress_sanitizer);
2014  Opts.ThreadSanitizer = Args.hasArg(OPT_fthread_sanitizer);
2015  Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
2016  Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
2017
2018  // Record whether the __DEPRECATED define was requested.
2019  Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
2020                                 OPT_fno_deprecated_macro,
2021                                 Opts.Deprecated);
2022
2023  // FIXME: Eliminate this dependency.
2024  unsigned Opt = getOptimizationLevel(Args, IK, Diags);
2025  Opts.Optimize = Opt != 0;
2026  Opts.OptimizeSize = getOptimizationLevelSize(Args, IK, Diags);
2027
2028  // This is the __NO_INLINE__ define, which just depends on things like the
2029  // optimization level and -fno-inline, not actually whether the backend has
2030  // inlining enabled.
2031  Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
2032
2033  Opts.FastMath = Args.hasArg(OPT_ffast_math);
2034
2035  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
2036  switch (SSP) {
2037  default:
2038    Diags.Report(diag::err_drv_invalid_value)
2039      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
2040    break;
2041  case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
2042  case 1: Opts.setStackProtector(LangOptions::SSPOn);  break;
2043  case 2: Opts.setStackProtector(LangOptions::SSPReq); break;
2044  }
2045}
2046
2047static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
2048                                  FileManager &FileMgr,
2049                                  DiagnosticsEngine &Diags) {
2050  using namespace options;
2051  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
2052  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
2053  if (const Arg *A = Args.getLastArg(OPT_token_cache))
2054      Opts.TokenCache = A->getValue(Args);
2055  else
2056    Opts.TokenCache = Opts.ImplicitPTHInclude;
2057  Opts.UsePredefines = !Args.hasArg(OPT_undef);
2058  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
2059  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
2060
2061  Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
2062  for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
2063         ie = Args.filtered_end(); it != ie; ++it) {
2064    const Arg *A = *it;
2065    Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
2066  }
2067
2068  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
2069    StringRef Value(A->getValue(Args));
2070    size_t Comma = Value.find(',');
2071    unsigned Bytes = 0;
2072    unsigned EndOfLine = 0;
2073
2074    if (Comma == StringRef::npos ||
2075        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
2076        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
2077      Diags.Report(diag::err_drv_preamble_format);
2078    else {
2079      Opts.PrecompiledPreambleBytes.first = Bytes;
2080      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
2081    }
2082  }
2083
2084  // Add macros from the command line.
2085  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
2086         ie = Args.filtered_end(); it != ie; ++it) {
2087    if ((*it)->getOption().matches(OPT_D))
2088      Opts.addMacroDef((*it)->getValue(Args));
2089    else
2090      Opts.addMacroUndef((*it)->getValue(Args));
2091  }
2092
2093  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
2094
2095  // Add the ordered list of -includes.
2096  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
2097                                             OPT_include_pth),
2098         ie = Args.filtered_end(); it != ie; ++it) {
2099    const Arg *A = *it;
2100    // PCH is handled specially, we need to extra the original include path.
2101    if (A->getOption().matches(OPT_include_pch)) {
2102      std::string OriginalFile =
2103        ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
2104      if (OriginalFile.empty())
2105        continue;
2106
2107      Opts.Includes.push_back(OriginalFile);
2108    } else
2109      Opts.Includes.push_back(A->getValue(Args));
2110  }
2111
2112  for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
2113         ie = Args.filtered_end(); it != ie; ++it) {
2114    const Arg *A = *it;
2115    Opts.ChainedIncludes.push_back(A->getValue(Args));
2116  }
2117
2118  // Include 'altivec.h' if -faltivec option present
2119  if (Args.hasArg(OPT_faltivec))
2120    Opts.Includes.push_back("altivec.h");
2121
2122  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
2123         ie = Args.filtered_end(); it != ie; ++it) {
2124    const Arg *A = *it;
2125    std::pair<StringRef,StringRef> Split =
2126      StringRef(A->getValue(Args)).split(';');
2127
2128    if (Split.second.empty()) {
2129      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
2130      continue;
2131    }
2132
2133    Opts.addRemappedFile(Split.first, Split.second);
2134  }
2135
2136  if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
2137    StringRef Name = A->getValue(Args);
2138    unsigned Library = llvm::StringSwitch<unsigned>(Name)
2139      .Case("libc++", ARCXX_libcxx)
2140      .Case("libstdc++", ARCXX_libstdcxx)
2141      .Case("none", ARCXX_nolib)
2142      .Default(~0U);
2143    if (Library == ~0U)
2144      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
2145    else
2146      Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
2147  }
2148}
2149
2150static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
2151                                        ArgList &Args) {
2152  using namespace options;
2153  Opts.ShowCPP = !Args.hasArg(OPT_dM);
2154  Opts.ShowComments = Args.hasArg(OPT_C);
2155  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
2156  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
2157  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
2158  Opts.RewriteIncludes = Args.hasArg(OPT_frewrite_includes);
2159}
2160
2161static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
2162  using namespace options;
2163  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
2164  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
2165  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
2166  Opts.Features = Args.getAllArgValues(OPT_target_feature);
2167  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
2168  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
2169
2170  // Use the default target triple if unspecified.
2171  if (Opts.Triple.empty())
2172    Opts.Triple = llvm::sys::getDefaultTargetTriple();
2173}
2174
2175//
2176
2177bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
2178                                        const char *const *ArgBegin,
2179                                        const char *const *ArgEnd,
2180                                        DiagnosticsEngine &Diags) {
2181  bool Success = true;
2182
2183  // Parse the arguments.
2184  OwningPtr<OptTable> Opts(createDriverOptTable());
2185  unsigned MissingArgIndex, MissingArgCount;
2186  OwningPtr<InputArgList> Args(
2187    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
2188
2189  // Check for missing argument error.
2190  if (MissingArgCount) {
2191    Diags.Report(diag::err_drv_missing_argument)
2192      << Args->getArgString(MissingArgIndex) << MissingArgCount;
2193    Success = false;
2194  }
2195
2196  // Issue errors on unknown arguments.
2197  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
2198         ie = Args->filtered_end(); it != ie; ++it) {
2199    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
2200    Success = false;
2201  }
2202
2203  // Issue errors on arguments that are not valid for CC1.
2204  for (ArgList::iterator I = Args->begin(), E = Args->end();
2205       I != E; ++I) {
2206    if (!(*I)->getOption().isCC1Option()) {
2207      Diags.Report(diag::err_drv_unknown_argument) << (*I)->getAsString(*Args);
2208      Success = false;
2209    }
2210  }
2211
2212  Success = ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags) && Success;
2213  Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
2214  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
2215  Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
2216            && Success;
2217  ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
2218  // FIXME: We shouldn't have to pass the DashX option around here
2219  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
2220  Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags)
2221            && Success;
2222  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
2223  if (DashX != IK_AST && DashX != IK_LLVM_IR) {
2224    ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
2225    if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2226      Res.getLangOpts()->ObjCExceptions = 1;
2227  }
2228  // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
2229  // PCH file and find the original header name. Remove the need to do that in
2230  // ParsePreprocessorArgs and remove the FileManager
2231  // parameters from the function and the "FileManager.h" #include.
2232  FileManager FileMgr(Res.getFileSystemOpts());
2233  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
2234  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
2235  ParseTargetArgs(Res.getTargetOpts(), *Args);
2236
2237  return Success;
2238}
2239
2240namespace {
2241
2242  class ModuleSignature {
2243    llvm::SmallVector<uint64_t, 16> Data;
2244    unsigned CurBit;
2245    uint64_t CurValue;
2246
2247  public:
2248    ModuleSignature() : CurBit(0), CurValue(0) { }
2249
2250    void add(uint64_t Value, unsigned Bits);
2251    void add(StringRef Value);
2252    void flush();
2253
2254    llvm::APInt getAsInteger() const;
2255  };
2256}
2257
2258void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
2259  CurValue |= Value << CurBit;
2260  if (CurBit + NumBits < 64) {
2261    CurBit += NumBits;
2262    return;
2263  }
2264
2265  // Add the current word.
2266  Data.push_back(CurValue);
2267
2268  if (CurBit)
2269    CurValue = Value >> (64-CurBit);
2270  else
2271    CurValue = 0;
2272  CurBit = (CurBit+NumBits) & 63;
2273}
2274
2275void ModuleSignature::flush() {
2276  if (CurBit == 0)
2277    return;
2278
2279  Data.push_back(CurValue);
2280  CurBit = 0;
2281  CurValue = 0;
2282}
2283
2284void ModuleSignature::add(StringRef Value) {
2285  for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
2286    add(*I, 8);
2287}
2288
2289llvm::APInt ModuleSignature::getAsInteger() const {
2290  return llvm::APInt(Data.size() * 64, Data);
2291}
2292
2293std::string CompilerInvocation::getModuleHash() const {
2294  ModuleSignature Signature;
2295
2296  // Start the signature with the compiler version.
2297  // FIXME: The full version string can be quite long.  Omit it from the
2298  // module hash for now to avoid failures where the path name becomes too
2299  // long.  An MD5 or similar checksum would work well here.
2300  // Signature.add(getClangFullRepositoryVersion());
2301
2302  // Extend the signature with the language options
2303#define LANGOPT(Name, Bits, Default, Description) \
2304  Signature.add(LangOpts->Name, Bits);
2305#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2306  Signature.add(static_cast<unsigned>(LangOpts->get##Name()), Bits);
2307#define BENIGN_LANGOPT(Name, Bits, Default, Description)
2308#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
2309#include "clang/Basic/LangOptions.def"
2310
2311  // Extend the signature with the target triple
2312  llvm::Triple T(TargetOpts.Triple);
2313  Signature.add((unsigned)T.getArch(), 5);
2314  Signature.add((unsigned)T.getVendor(), 4);
2315  Signature.add((unsigned)T.getOS(), 5);
2316  Signature.add((unsigned)T.getEnvironment(), 4);
2317
2318  // Extend the signature with preprocessor options.
2319  Signature.add(getPreprocessorOpts().UsePredefines, 1);
2320  Signature.add(getPreprocessorOpts().DetailedRecord, 1);
2321
2322  // Hash the preprocessor defines.
2323  // FIXME: This is terrible. Use an MD5 sum of the preprocessor defines.
2324  std::vector<StringRef> MacroDefs;
2325  for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
2326            I = getPreprocessorOpts().Macros.begin(),
2327         IEnd = getPreprocessorOpts().Macros.end();
2328       I != IEnd; ++I) {
2329    if (!I->second)
2330      MacroDefs.push_back(I->first);
2331  }
2332  llvm::array_pod_sort(MacroDefs.begin(), MacroDefs.end());
2333
2334  unsigned PPHashResult = 0;
2335  for (unsigned I = 0, N = MacroDefs.size(); I != N; ++I)
2336    PPHashResult = llvm::HashString(MacroDefs[I], PPHashResult);
2337  Signature.add(PPHashResult, 32);
2338
2339  // We've generated the signature. Treat it as one large APInt that we'll
2340  // encode in base-36 and return.
2341  Signature.flush();
2342  return Signature.getAsInteger().toString(36, /*Signed=*/false);
2343}
2344