CompilerInvocation.cpp revision 234982 
1//===--- CompilerInvocation.cpp -------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "clang/Frontend/CompilerInvocation.h"
11#include "clang/Basic/Diagnostic.h"
12#include "clang/Basic/Version.h"
13#include "clang/Basic/FileManager.h"
14#include "clang/Driver/Arg.h"
15#include "clang/Driver/ArgList.h"
16#include "clang/Driver/CC1Options.h"
17#include "clang/Driver/DriverDiagnostic.h"
18#include "clang/Driver/OptTable.h"
19#include "clang/Driver/Option.h"
20#include "clang/Frontend/CompilerInvocation.h"
21#include "clang/Frontend/LangStandard.h"
22#include "clang/Serialization/ASTReader.h"
23#include "llvm/ADT/OwningPtr.h"
24#include "llvm/ADT/SmallVector.h"
25#include "llvm/ADT/StringExtras.h"
26#include "llvm/ADT/StringSwitch.h"
27#include "llvm/ADT/Triple.h"
28#include "llvm/Support/ErrorHandling.h"
29#include "llvm/Support/Host.h"
30#include "llvm/Support/Path.h"
31using namespace clang;
32
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  if (Opts.DebugInfo)
185    Res.push_back("-g");
186  if (Opts.DisableLLVMOpts)
187    Res.push_back("-disable-llvm-optzns");
188  if (Opts.DisableRedZone)
189    Res.push_back("-disable-red-zone");
190  if (Opts.DisableTailCalls)
191    Res.push_back("-mdisable-tail-calls");
192  if (!Opts.DebugCompilationDir.empty())
193    Res.push_back("-fdebug-compilation-dir", Opts.DebugCompilationDir);
194  if (!Opts.DwarfDebugFlags.empty())
195    Res.push_back("-dwarf-debug-flags", Opts.DwarfDebugFlags);
196  if (Opts.ObjCRuntimeHasARC)
197    Res.push_back("-fobjc-runtime-has-arc");
198  if (Opts.ObjCRuntimeHasTerminate)
199    Res.push_back("-fobjc-runtime-has-terminate");
200  if (Opts.EmitGcovArcs)
201    Res.push_back("-femit-coverage-data");
202  if (Opts.EmitGcovNotes)
203    Res.push_back("-femit-coverage-notes");
204  if (!Opts.MergeAllConstants)
205    Res.push_back("-fno-merge-all-constants");
206  if (Opts.NoCommon)
207    Res.push_back("-fno-common");
208  if (Opts.ForbidGuardVariables)
209    Res.push_back("-fforbid-guard-variables");
210  if (Opts.UseRegisterSizedBitfieldAccess)
211    Res.push_back("-fuse-register-sized-bitfield-access");
212  if (Opts.NoImplicitFloat)
213    Res.push_back("-no-implicit-float");
214  if (Opts.OmitLeafFramePointer)
215    Res.push_back("-momit-leaf-frame-pointer");
216  if (Opts.OptimizeSize) {
217    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
218    Opts.OptimizeSize == 1 ? Res.push_back("-Os") : Res.push_back("-Oz");
219  } else if (Opts.OptimizationLevel != 0)
220    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
221  if (!Opts.MainFileName.empty())
222    Res.push_back("-main-file-name", Opts.MainFileName);
223  if (Opts.NoInfsFPMath)
224    Res.push_back("-menable-no-infinities");
225  if (Opts.NoNaNsFPMath)
226    Res.push_back("-menable-no-nans");
227  // SimplifyLibCalls is only derived.
228  // TimePasses is only derived.
229  // UnitAtATime is unused.
230  // Inlining is only derived.
231
232  // UnrollLoops is derived, but also accepts an option, no
233  // harm in pushing it back here.
234  if (Opts.UnrollLoops)
235    Res.push_back("-funroll-loops");
236  if (Opts.DataSections)
237    Res.push_back("-fdata-sections");
238  if (Opts.FunctionSections)
239    Res.push_back("-ffunction-sections");
240  if (Opts.AsmVerbose)
241    Res.push_back("-masm-verbose");
242  if (!Opts.CodeModel.empty())
243    Res.push_back("-mcode-model", Opts.CodeModel);
244  if (Opts.CUDAIsDevice)
245    Res.push_back("-fcuda-is-device");
246  if (!Opts.CXAAtExit)
247    Res.push_back("-fno-use-cxa-atexit");
248  if (Opts.CXXCtorDtorAliases)
249    Res.push_back("-mconstructor-aliases");
250  if (Opts.ObjCAutoRefCountExceptions)
251    Res.push_back("-fobjc-arc-eh");
252  if (!Opts.DebugPass.empty()) {
253    Res.push_back("-mdebug-pass", Opts.DebugPass);
254  }
255  if (Opts.DisableFPElim)
256    Res.push_back("-mdisable-fp-elim");
257  if (!Opts.FloatABI.empty())
258    Res.push_back("-mfloat-abi", Opts.FloatABI);
259  if (!Opts.LimitFloatPrecision.empty())
260    Res.push_back("-mlimit-float-precision", Opts.LimitFloatPrecision);
261  if (Opts.NoZeroInitializedInBSS)
262    Res.push_back("-mno-zero-initialized-bss");
263  switch (Opts.getObjCDispatchMethod()) {
264  case CodeGenOptions::Legacy:
265    break;
266  case CodeGenOptions::Mixed:
267    Res.push_back("-fobjc-dispatch-method=mixed");
268    break;
269  case CodeGenOptions::NonLegacy:
270    Res.push_back("-fobjc-dispatch-method=non-legacy");
271    break;
272  }
273  if (Opts.NumRegisterParameters)
274    Res.push_back("-mregparm", llvm::utostr(Opts.NumRegisterParameters));
275  if (Opts.NoGlobalMerge)
276    Res.push_back("-mno-global-merge");
277  if (Opts.NoExecStack)
278    Res.push_back("-mnoexecstack");
279  if (Opts.RelaxAll)
280    Res.push_back("-mrelax-all");
281  if (Opts.SaveTempLabels)
282    Res.push_back("-msave-temp-labels");
283  if (Opts.NoDwarf2CFIAsm)
284    Res.push_back("-fno-dwarf2-cfi-asm");
285  if (Opts.NoDwarfDirectoryAsm)
286    Res.push_back("-fno-dwarf-directory-asm");
287  if (Opts.SoftFloat)
288    Res.push_back("-msoft-float");
289  if (Opts.StrictEnums)
290    Res.push_back("-fstrict-enums");
291  if (Opts.UnwindTables)
292    Res.push_back("-munwind-tables");
293  if (Opts.RelocationModel != "pic")
294    Res.push_back("-mrelocation-model", Opts.RelocationModel);
295  if (!Opts.VerifyModule)
296    Res.push_back("-disable-llvm-verifier");
297  for (unsigned i = 0, e = Opts.BackendOptions.size(); i != e; ++i)
298    Res.push_back("-backend-option", Opts.BackendOptions[i]);
299}
300
301static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
302                                       ToArgsList &Res) {
303  if (Opts.IncludeSystemHeaders)
304    Res.push_back("-sys-header-deps");
305  if (Opts.ShowHeaderIncludes)
306    Res.push_back("-H");
307  if (!Opts.HeaderIncludeOutputFile.empty())
308    Res.push_back("-header-include-file", Opts.HeaderIncludeOutputFile);
309  if (Opts.UsePhonyTargets)
310    Res.push_back("-MP");
311  if (!Opts.OutputFile.empty())
312    Res.push_back("-dependency-file", Opts.OutputFile);
313  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i)
314    Res.push_back("-MT", Opts.Targets[i]);
315}
316
317static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
318                                 ToArgsList &Res) {
319  if (Opts.IgnoreWarnings)
320    Res.push_back("-w");
321  if (Opts.NoRewriteMacros)
322    Res.push_back("-Wno-rewrite-macros");
323  if (Opts.Pedantic)
324    Res.push_back("-pedantic");
325  if (Opts.PedanticErrors)
326    Res.push_back("-pedantic-errors");
327  if (!Opts.ShowColumn)
328    Res.push_back("-fno-show-column");
329  if (!Opts.ShowLocation)
330    Res.push_back("-fno-show-source-location");
331  if (!Opts.ShowCarets)
332    Res.push_back("-fno-caret-diagnostics");
333  if (!Opts.ShowFixits)
334    Res.push_back("-fno-diagnostics-fixit-info");
335  if (Opts.ShowSourceRanges)
336    Res.push_back("-fdiagnostics-print-source-range-info");
337  if (Opts.ShowParseableFixits)
338    Res.push_back("-fdiagnostics-parseable-fixits");
339  if (Opts.ShowColors)
340    Res.push_back("-fcolor-diagnostics");
341  if (Opts.VerifyDiagnostics)
342    Res.push_back("-verify");
343  if (Opts.ShowOptionNames)
344    Res.push_back("-fdiagnostics-show-option");
345  if (Opts.ShowCategories == 1)
346    Res.push_back("-fdiagnostics-show-category=id");
347  else if (Opts.ShowCategories == 2)
348    Res.push_back("-fdiagnostics-show-category=name");
349  switch (Opts.Format) {
350  case DiagnosticOptions::Clang:
351    Res.push_back("-fdiagnostics-format=clang"); break;
352  case DiagnosticOptions::Msvc:
353    Res.push_back("-fdiagnostics-format=msvc");  break;
354  case DiagnosticOptions::Vi:
355    Res.push_back("-fdiagnostics-format=vi");    break;
356  }
357  if (Opts.ErrorLimit)
358    Res.push_back("-ferror-limit", llvm::utostr(Opts.ErrorLimit));
359  if (!Opts.DiagnosticLogFile.empty())
360    Res.push_back("-diagnostic-log-file", Opts.DiagnosticLogFile);
361  if (Opts.MacroBacktraceLimit
362                        != DiagnosticOptions::DefaultMacroBacktraceLimit)
363    Res.push_back("-fmacro-backtrace-limit",
364                  llvm::utostr(Opts.MacroBacktraceLimit));
365  if (Opts.TemplateBacktraceLimit
366                        != DiagnosticOptions::DefaultTemplateBacktraceLimit)
367    Res.push_back("-ftemplate-backtrace-limit",
368                  llvm::utostr(Opts.TemplateBacktraceLimit));
369  if (Opts.ConstexprBacktraceLimit
370                        != DiagnosticOptions::DefaultConstexprBacktraceLimit)
371    Res.push_back("-fconstexpr-backtrace-limit",
372                  llvm::utostr(Opts.ConstexprBacktraceLimit));
373
374  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop)
375    Res.push_back("-ftabstop", llvm::utostr(Opts.TabStop));
376  if (Opts.MessageLength)
377    Res.push_back("-fmessage-length", llvm::utostr(Opts.MessageLength));
378  if (!Opts.DumpBuildInformation.empty())
379    Res.push_back("-dump-build-information", Opts.DumpBuildInformation);
380  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
381    Res.push_back("-W" + Opts.Warnings[i]);
382}
383
384static const char *getInputKindName(InputKind Kind) {
385  switch (Kind) {
386  case IK_None:              break;
387  case IK_AST:               return "ast";
388  case IK_Asm:               return "assembler-with-cpp";
389  case IK_C:                 return "c";
390  case IK_CXX:               return "c++";
391  case IK_LLVM_IR:           return "ir";
392  case IK_ObjC:              return "objective-c";
393  case IK_ObjCXX:            return "objective-c++";
394  case IK_OpenCL:            return "cl";
395  case IK_CUDA:              return "cuda";
396  case IK_PreprocessedC:     return "cpp-output";
397  case IK_PreprocessedCXX:   return "c++-cpp-output";
398  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
399  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
400  }
401
402  llvm_unreachable("Unexpected language kind!");
403}
404
405static const char *getActionName(frontend::ActionKind Kind) {
406  switch (Kind) {
407  case frontend::PluginAction:
408    llvm_unreachable("Invalid kind!");
409
410  case frontend::ASTDump:                return "-ast-dump";
411  case frontend::ASTDumpXML:             return "-ast-dump-xml";
412  case frontend::ASTPrint:               return "-ast-print";
413  case frontend::ASTView:                return "-ast-view";
414  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
415  case frontend::DumpTokens:             return "-dump-tokens";
416  case frontend::EmitAssembly:           return "-S";
417  case frontend::EmitBC:                 return "-emit-llvm-bc";
418  case frontend::EmitHTML:               return "-emit-html";
419  case frontend::EmitLLVM:               return "-emit-llvm";
420  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
421  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
422  case frontend::EmitObj:                return "-emit-obj";
423  case frontend::FixIt:                  return "-fixit";
424  case frontend::GenerateModule:         return "-emit-module";
425  case frontend::GeneratePCH:            return "-emit-pch";
426  case frontend::GeneratePTH:            return "-emit-pth";
427  case frontend::InitOnly:               return "-init-only";
428  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
429  case frontend::PrintDeclContext:       return "-print-decl-contexts";
430  case frontend::PrintPreamble:          return "-print-preamble";
431  case frontend::PrintPreprocessedInput: return "-E";
432  case frontend::RewriteMacros:          return "-rewrite-macros";
433  case frontend::RewriteObjC:            return "-rewrite-objc";
434  case frontend::RewriteTest:            return "-rewrite-test";
435  case frontend::RunAnalysis:            return "-analyze";
436  case frontend::MigrateSource:          return "-migrate";
437  case frontend::RunPreprocessorOnly:    return "-Eonly";
438  }
439
440  llvm_unreachable("Unexpected language kind!");
441}
442
443static void FileSystemOptsToArgs(const FileSystemOptions &Opts, ToArgsList &Res){
444  if (!Opts.WorkingDir.empty())
445    Res.push_back("-working-directory", Opts.WorkingDir);
446}
447
448static void FrontendOptsToArgs(const FrontendOptions &Opts, ToArgsList &Res) {
449  if (Opts.DisableFree)
450    Res.push_back("-disable-free");
451  if (Opts.RelocatablePCH)
452    Res.push_back("-relocatable-pch");
453  if (Opts.ShowHelp)
454    Res.push_back("-help");
455  if (Opts.ShowMacrosInCodeCompletion)
456    Res.push_back("-code-completion-macros");
457  if (Opts.ShowCodePatternsInCodeCompletion)
458    Res.push_back("-code-completion-patterns");
459  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
460    Res.push_back("-no-code-completion-globals");
461  if (Opts.ShowStats)
462    Res.push_back("-print-stats");
463  if (Opts.ShowTimers)
464    Res.push_back("-ftime-report");
465  if (Opts.ShowVersion)
466    Res.push_back("-version");
467  if (Opts.FixWhatYouCan)
468    Res.push_back("-fix-what-you-can");
469  if (Opts.FixOnlyWarnings)
470    Res.push_back("-fix-only-warnings");
471  if (Opts.FixAndRecompile)
472    Res.push_back("-fixit-recompile");
473  if (Opts.FixToTemporaries)
474    Res.push_back("-fixit-to-temporary");
475  switch (Opts.ARCMTAction) {
476  case FrontendOptions::ARCMT_None:
477    break;
478  case FrontendOptions::ARCMT_Check:
479    Res.push_back("-arcmt-check");
480    break;
481  case FrontendOptions::ARCMT_Modify:
482    Res.push_back("-arcmt-modify");
483    break;
484  case FrontendOptions::ARCMT_Migrate:
485    Res.push_back("-arcmt-migrate");
486    break;
487  }
488  if (!Opts.MTMigrateDir.empty())
489    Res.push_back("-mt-migrate-directory", Opts.MTMigrateDir);
490  if (!Opts.ARCMTMigrateReportOut.empty())
491    Res.push_back("-arcmt-migrate-report-output", Opts.ARCMTMigrateReportOut);
492  if (Opts.ARCMTMigrateEmitARCErrors)
493    Res.push_back("-arcmt-migrate-emit-errors");
494
495  if (Opts.ObjCMTAction & ~FrontendOptions::ObjCMT_Literals)
496    Res.push_back("-objcmt-migrate-literals");
497  if (Opts.ObjCMTAction & ~FrontendOptions::ObjCMT_Subscripting)
498    Res.push_back("-objcmt-migrate-subscripting");
499
500  bool NeedLang = false;
501  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
502    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].File) !=
503        Opts.Inputs[i].Kind)
504      NeedLang = true;
505  if (NeedLang)
506    Res.push_back("-x", getInputKindName(Opts.Inputs[0].Kind));
507  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
508    assert((!NeedLang || Opts.Inputs[i].Kind == Opts.Inputs[0].Kind) &&
509           "Unable to represent this input vector!");
510    Res.push_back(Opts.Inputs[i].File);
511  }
512
513  if (!Opts.OutputFile.empty())
514    Res.push_back("-o", Opts.OutputFile);
515  if (!Opts.CodeCompletionAt.FileName.empty())
516    Res.push_back("-code-completion-at",
517                  Opts.CodeCompletionAt.FileName + ":" +
518                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
519                  llvm::utostr(Opts.CodeCompletionAt.Column));
520  if (Opts.ProgramAction != frontend::PluginAction)
521    Res.push_back(getActionName(Opts.ProgramAction));
522  if (!Opts.ActionName.empty()) {
523    Res.push_back("-plugin", Opts.ActionName);
524    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i)
525      Res.push_back("-plugin-arg-" + Opts.ActionName, Opts.PluginArgs[i]);
526  }
527  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i)
528    Res.push_back("-load", Opts.Plugins[i]);
529  for (unsigned i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
530    Res.push_back("-add-plugin", Opts.AddPluginActions[i]);
531    for(unsigned ai = 0, ae = Opts.AddPluginArgs.size(); ai != ae; ++ai)
532      Res.push_back("-plugin-arg-" + Opts.AddPluginActions[i],
533                    Opts.AddPluginArgs[i][ai]);
534  }
535  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i)
536    Res.push_back("-ast-merge", Opts.ASTMergeFiles[i]);
537  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i)
538    Res.push_back("-mllvm", Opts.LLVMArgs[i]);
539  if (!Opts.OverrideRecordLayoutsFile.empty())
540    Res.push_back("-foverride-record-layout=" + Opts.OverrideRecordLayoutsFile);
541}
542
543static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
544                                   ToArgsList &Res) {
545  if (Opts.Sysroot != "/") {
546    Res.push_back("-isysroot");
547    Res.push_back(Opts.Sysroot);
548  }
549
550  /// User specified include entries.
551  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
552    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
553    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
554      llvm::report_fatal_error("Invalid option set!");
555    if (E.IsUserSupplied) {
556      switch (E.Group) {
557      case frontend::After:
558        Res.push_back("-idirafter");
559        break;
560
561      case frontend::Quoted:
562        Res.push_back("-iquote");
563        break;
564
565      case frontend::System:
566        Res.push_back("-isystem");
567        break;
568
569      case frontend::IndexHeaderMap:
570        Res.push_back("-index-header-map");
571        Res.push_back(E.IsFramework? "-F" : "-I");
572        break;
573
574      case frontend::CSystem:
575        Res.push_back("-c-isystem");
576        break;
577
578      case frontend::CXXSystem:
579        Res.push_back("-cxx-isystem");
580        break;
581
582      case frontend::ObjCSystem:
583        Res.push_back("-objc-isystem");
584        break;
585
586      case frontend::ObjCXXSystem:
587        Res.push_back("-objcxx-isystem");
588        break;
589
590      case frontend::Angled:
591        Res.push_back(E.IsFramework ? "-F" : "-I");
592        break;
593      }
594    } else {
595      if (E.IsInternal) {
596        assert(E.Group == frontend::System && "Unexpected header search group");
597        if (E.ImplicitExternC)
598          Res.push_back("-internal-externc-isystem");
599        else
600          Res.push_back("-internal-isystem");
601      } else {
602        if (E.Group != frontend::Angled && E.Group != frontend::System)
603          llvm::report_fatal_error("Invalid option set!");
604        Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
605                      "-iwithprefix");
606      }
607    }
608    Res.push_back(E.Path);
609  }
610
611  if (!Opts.ResourceDir.empty())
612    Res.push_back("-resource-dir", Opts.ResourceDir);
613  if (!Opts.ModuleCachePath.empty())
614    Res.push_back("-fmodule-cache-path", Opts.ModuleCachePath);
615  if (!Opts.UseStandardSystemIncludes)
616    Res.push_back("-nostdsysteminc");
617  if (!Opts.UseStandardCXXIncludes)
618    Res.push_back("-nostdinc++");
619  if (Opts.UseLibcxx)
620    Res.push_back("-stdlib=libc++");
621  if (Opts.Verbose)
622    Res.push_back("-v");
623}
624
625static void LangOptsToArgs(const LangOptions &Opts, ToArgsList &Res) {
626  LangOptions DefaultLangOpts;
627
628  // FIXME: Need to set -std to get all the implicit options.
629
630  // FIXME: We want to only pass options relative to the defaults, which
631  // requires constructing a target. :(
632  //
633  // It would be better to push the all target specific choices into the driver,
634  // so that everything below that was more uniform.
635
636  if (Opts.Trigraphs)
637    Res.push_back("-trigraphs");
638  // Implicit based on the input kind:
639  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
640  // Implicit based on the input language standard:
641  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
642  if (Opts.DollarIdents)
643    Res.push_back("-fdollars-in-identifiers");
644  if (Opts.GNUMode && !Opts.GNUKeywords)
645    Res.push_back("-fno-gnu-keywords");
646  if (!Opts.GNUMode && Opts.GNUKeywords)
647    Res.push_back("-fgnu-keywords");
648  if (Opts.MicrosoftExt)
649    Res.push_back("-fms-extensions");
650  if (Opts.MicrosoftMode)
651    Res.push_back("-fms-compatibility");
652  if (Opts.MSCVersion != 0)
653    Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
654  if (Opts.Borland)
655    Res.push_back("-fborland-extensions");
656  if (!Opts.ObjCNonFragileABI)
657    Res.push_back("-fobjc-fragile-abi");
658  if (Opts.ObjCDefaultSynthProperties)
659    Res.push_back("-fobjc-default-synthesize-properties");
660  // NoInline is implicit.
661  if (!Opts.CXXOperatorNames)
662    Res.push_back("-fno-operator-names");
663  if (Opts.PascalStrings)
664    Res.push_back("-fpascal-strings");
665  if (Opts.CatchUndefined)
666    Res.push_back("-fcatch-undefined-behavior");
667  if (Opts.AddressSanitizer)
668    Res.push_back("-faddress-sanitizer");
669  if (Opts.ThreadSanitizer)
670    Res.push_back("-fthread-sanitizer");
671  if (Opts.WritableStrings)
672    Res.push_back("-fwritable-strings");
673  if (Opts.ConstStrings)
674    Res.push_back("-fconst-strings");
675  if (!Opts.LaxVectorConversions)
676    Res.push_back("-fno-lax-vector-conversions");
677  if (Opts.AltiVec)
678    Res.push_back("-faltivec");
679  if (Opts.Exceptions)
680    Res.push_back("-fexceptions");
681  if (Opts.ObjCExceptions)
682    Res.push_back("-fobjc-exceptions");
683  if (Opts.CXXExceptions)
684    Res.push_back("-fcxx-exceptions");
685  if (Opts.SjLjExceptions)
686    Res.push_back("-fsjlj-exceptions");
687  if (Opts.TraditionalCPP)
688    Res.push_back("-traditional-cpp");
689  if (!Opts.RTTI)
690    Res.push_back("-fno-rtti");
691  if (Opts.MSBitfields)
692    Res.push_back("-mms-bitfields");
693  if (!Opts.NeXTRuntime)
694    Res.push_back("-fgnu-runtime");
695  if (Opts.Freestanding)
696    Res.push_back("-ffreestanding");
697  if (Opts.FormatExtensions)
698    Res.push_back("-fformat-extensions");
699  if (Opts.NoBuiltin)
700    Res.push_back("-fno-builtin");
701  if (!Opts.AssumeSaneOperatorNew)
702    Res.push_back("-fno-assume-sane-operator-new");
703  if (!Opts.ThreadsafeStatics)
704    Res.push_back("-fno-threadsafe-statics");
705  if (Opts.POSIXThreads)
706    Res.push_back("-pthread");
707  if (Opts.Blocks)
708    Res.push_back("-fblocks");
709  if (Opts.BlocksRuntimeOptional)
710    Res.push_back("-fblocks-runtime-optional");
711  if (Opts.Modules)
712    Res.push_back("-fmodules");
713  if (Opts.EmitAllDecls)
714    Res.push_back("-femit-all-decls");
715  if (Opts.MathErrno)
716    Res.push_back("-fmath-errno");
717  switch (Opts.getSignedOverflowBehavior()) {
718  case LangOptions::SOB_Undefined: break;
719  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
720  case LangOptions::SOB_Trapping:
721    Res.push_back("-ftrapv");
722    if (!Opts.OverflowHandler.empty())
723      Res.push_back("-ftrapv-handler", Opts.OverflowHandler);
724    break;
725  }
726  if (Opts.HeinousExtensions)
727    Res.push_back("-fheinous-gnu-extensions");
728  // Optimize is implicit.
729  // OptimizeSize is implicit.
730  if (Opts.FastMath)
731    Res.push_back("-ffast-math");
732  if (Opts.Static)
733    Res.push_back("-static-define");
734  if (Opts.DumpRecordLayoutsSimple)
735    Res.push_back("-fdump-record-layouts-simple");
736  else if (Opts.DumpRecordLayouts)
737    Res.push_back("-fdump-record-layouts");
738  if (Opts.DumpVTableLayouts)
739    Res.push_back("-fdump-vtable-layouts");
740  if (Opts.NoBitFieldTypeAlign)
741    Res.push_back("-fno-bitfield-type-alignment");
742  if (Opts.PICLevel)
743    Res.push_back("-pic-level", llvm::utostr(Opts.PICLevel));
744  if (Opts.PIELevel)
745    Res.push_back("-pie-level", llvm::utostr(Opts.PIELevel));
746  if (Opts.ObjCGCBitmapPrint)
747    Res.push_back("-print-ivar-layout");
748  if (Opts.NoConstantCFStrings)
749    Res.push_back("-fno-constant-cfstrings");
750  if (!Opts.AccessControl)
751    Res.push_back("-fno-access-control");
752  if (!Opts.CharIsSigned)
753    Res.push_back("-fno-signed-char");
754  if (Opts.ShortWChar)
755    Res.push_back("-fshort-wchar");
756  if (!Opts.ElideConstructors)
757    Res.push_back("-fno-elide-constructors");
758  if (Opts.getGC() != LangOptions::NonGC) {
759    if (Opts.getGC() == LangOptions::HybridGC) {
760      Res.push_back("-fobjc-gc");
761    } else {
762      assert(Opts.getGC() == LangOptions::GCOnly && "Invalid GC mode!");
763      Res.push_back("-fobjc-gc-only");
764    }
765  }
766  if (Opts.ObjCAutoRefCount)
767    Res.push_back("-fobjc-arc");
768  if (Opts.ObjCRuntimeHasWeak)
769    Res.push_back("-fobjc-runtime-has-weak");
770  if (!Opts.ObjCInferRelatedResultType)
771    Res.push_back("-fno-objc-infer-related-result-type");
772
773  if (Opts.AppleKext)
774    Res.push_back("-fapple-kext");
775
776  if (Opts.getVisibilityMode() != DefaultVisibility) {
777    Res.push_back("-fvisibility");
778    if (Opts.getVisibilityMode() == HiddenVisibility) {
779      Res.push_back("hidden");
780    } else {
781      assert(Opts.getVisibilityMode() == ProtectedVisibility &&
782             "Invalid visibility!");
783      Res.push_back("protected");
784    }
785  }
786  if (Opts.InlineVisibilityHidden)
787    Res.push_back("-fvisibility-inlines-hidden");
788
789  if (Opts.getStackProtector() != 0)
790    Res.push_back("-stack-protector", llvm::utostr(Opts.getStackProtector()));
791  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth)
792    Res.push_back("-ftemplate-depth", llvm::utostr(Opts.InstantiationDepth));
793  if (Opts.ConstexprCallDepth != DefaultLangOpts.ConstexprCallDepth)
794    Res.push_back("-fconstexpr-depth", llvm::utostr(Opts.ConstexprCallDepth));
795  if (!Opts.ObjCConstantStringClass.empty())
796    Res.push_back("-fconstant-string-class", Opts.ObjCConstantStringClass);
797  if (Opts.FakeAddressSpaceMap)
798    Res.push_back("-ffake-address-space-map");
799  if (Opts.ParseUnknownAnytype)
800    Res.push_back("-funknown-anytype");
801  if (Opts.DebuggerSupport)
802    Res.push_back("-fdebugger-support");
803  if (Opts.DebuggerCastResultToId)
804    Res.push_back("-fdebugger-cast-result-to-id");
805  if (Opts.DebuggerObjCLiteral)
806    Res.push_back("-fdebugger-objc-literal");
807  if (Opts.DelayedTemplateParsing)
808    Res.push_back("-fdelayed-template-parsing");
809  if (Opts.Deprecated)
810    Res.push_back("-fdeprecated-macro");
811  if (Opts.ApplePragmaPack)
812    Res.push_back("-fapple-pragma-pack");
813  if (!Opts.CurrentModule.empty())
814    Res.push_back("-fmodule-name=" + Opts.CurrentModule);
815}
816
817static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
818                                   ToArgsList &Res) {
819  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
820    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
821                  Opts.Macros[i].first);
822  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
823    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
824    Res.push_back("-include", Opts.Includes[i]);
825  }
826  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i)
827    Res.push_back("-imacros", Opts.MacroIncludes[i]);
828  if (!Opts.UsePredefines)
829    Res.push_back("-undef");
830  if (Opts.DetailedRecord)
831    Res.push_back("-detailed-preprocessing-record");
832  if (!Opts.ImplicitPCHInclude.empty())
833    Res.push_back("-include-pch", Opts.ImplicitPCHInclude);
834  if (!Opts.ImplicitPTHInclude.empty())
835    Res.push_back("-include-pth", Opts.ImplicitPTHInclude);
836  if (!Opts.TokenCache.empty()) {
837    if (Opts.ImplicitPTHInclude.empty())
838      Res.push_back("-token-cache", Opts.TokenCache);
839    else
840      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
841             "Unsupported option combination!");
842  }
843  for (unsigned i = 0, e = Opts.ChainedIncludes.size(); i != e; ++i)
844    Res.push_back("-chain-include", Opts.ChainedIncludes[i]);
845  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
846    Res.push_back("-remap-file", Opts.RemappedFiles[i].first + ";" +
847                                 Opts.RemappedFiles[i].second);
848  }
849}
850
851static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
852                                         ToArgsList &Res) {
853  if (!Opts.ShowCPP && !Opts.ShowMacros)
854    llvm::report_fatal_error("Invalid option combination!");
855
856  if (Opts.ShowCPP && Opts.ShowMacros)
857    Res.push_back("-dD");
858  else if (!Opts.ShowCPP && Opts.ShowMacros)
859    Res.push_back("-dM");
860
861  if (!Opts.ShowLineMarkers)
862    Res.push_back("-P");
863  if (Opts.ShowComments)
864    Res.push_back("-C");
865  if (Opts.ShowMacroComments)
866    Res.push_back("-CC");
867}
868
869static void TargetOptsToArgs(const TargetOptions &Opts,
870                             ToArgsList &Res) {
871  Res.push_back("-triple");
872  Res.push_back(Opts.Triple);
873  if (!Opts.CPU.empty())
874    Res.push_back("-target-cpu", Opts.CPU);
875  if (!Opts.ABI.empty())
876    Res.push_back("-target-abi", Opts.ABI);
877  if (!Opts.LinkerVersion.empty())
878    Res.push_back("-target-linker-version", Opts.LinkerVersion);
879  if (!Opts.CXXABI.empty())
880    Res.push_back("-cxx-abi", Opts.CXXABI);
881  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i)
882    Res.push_back("-target-feature", Opts.Features[i]);
883}
884
885void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
886  ToArgsList List(Res);
887  AnalyzerOptsToArgs(getAnalyzerOpts(), List);
888  CodeGenOptsToArgs(getCodeGenOpts(), List);
889  DependencyOutputOptsToArgs(getDependencyOutputOpts(), List);
890  DiagnosticOptsToArgs(getDiagnosticOpts(), List);
891  FileSystemOptsToArgs(getFileSystemOpts(), List);
892  FrontendOptsToArgs(getFrontendOpts(), List);
893  HeaderSearchOptsToArgs(getHeaderSearchOpts(), List);
894  LangOptsToArgs(*getLangOpts(), List);
895  PreprocessorOptsToArgs(getPreprocessorOpts(), List);
896  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), List);
897  TargetOptsToArgs(getTargetOpts(), List);
898}
899
900//===----------------------------------------------------------------------===//
901// Deserialization (to args)
902//===----------------------------------------------------------------------===//
903
904using namespace clang::driver;
905using namespace clang::driver::cc1options;
906
907//
908
909static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
910                                     DiagnosticsEngine &Diags) {
911  unsigned DefaultOpt = 0;
912  if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
913    DefaultOpt = 2;
914  // -Os/-Oz implies -O2
915  return (Args.hasArg(OPT_Os) || Args.hasArg (OPT_Oz)) ? 2 :
916    Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
917}
918
919static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
920                              DiagnosticsEngine &Diags) {
921  using namespace cc1options;
922  bool Success = true;
923  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
924    StringRef Name = A->getValue(Args);
925    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
926#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
927      .Case(CMDFLAG, NAME##Model)
928#include "clang/Frontend/Analyses.def"
929      .Default(NumStores);
930    if (Value == NumStores) {
931      Diags.Report(diag::err_drv_invalid_value)
932        << A->getAsString(Args) << Name;
933      Success = false;
934    } else {
935      Opts.AnalysisStoreOpt = Value;
936    }
937  }
938
939  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
940    StringRef Name = A->getValue(Args);
941    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
942#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
943      .Case(CMDFLAG, NAME##Model)
944#include "clang/Frontend/Analyses.def"
945      .Default(NumConstraints);
946    if (Value == NumConstraints) {
947      Diags.Report(diag::err_drv_invalid_value)
948        << A->getAsString(Args) << Name;
949      Success = false;
950    } else {
951      Opts.AnalysisConstraintsOpt = Value;
952    }
953  }
954
955  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
956    StringRef Name = A->getValue(Args);
957    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
958#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
959      .Case(CMDFLAG, PD_##NAME)
960#include "clang/Frontend/Analyses.def"
961      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
962    if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
963      Diags.Report(diag::err_drv_invalid_value)
964        << A->getAsString(Args) << Name;
965      Success = false;
966    } else {
967      Opts.AnalysisDiagOpt = Value;
968    }
969  }
970
971  if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
972    StringRef Name = A->getValue(Args);
973    AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
974#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
975      .Case(CMDFLAG, NAME)
976#include "clang/Frontend/Analyses.def"
977      .Default(NumPurgeModes);
978    if (Value == NumPurgeModes) {
979      Diags.Report(diag::err_drv_invalid_value)
980        << A->getAsString(Args) << Name;
981      Success = false;
982    } else {
983      Opts.AnalysisPurgeOpt = Value;
984    }
985  }
986
987  if (Arg *A = Args.getLastArg(OPT_analyzer_ipa)) {
988    StringRef Name = A->getValue(Args);
989    AnalysisIPAMode Value = llvm::StringSwitch<AnalysisIPAMode>(Name)
990#define ANALYSIS_IPA(NAME, CMDFLAG, DESC) \
991      .Case(CMDFLAG, NAME)
992#include "clang/Frontend/Analyses.def"
993      .Default(NumIPAModes);
994    if (Value == NumIPAModes) {
995      Diags.Report(diag::err_drv_invalid_value)
996        << A->getAsString(Args) << Name;
997      Success = false;
998    } else {
999      Opts.IPAMode = Value;
1000    }
1001  }
1002
1003  if (Arg *A = Args.getLastArg(OPT_analyzer_inlining_mode)) {
1004    StringRef Name = A->getValue(Args);
1005    AnalysisInliningMode Value = llvm::StringSwitch<AnalysisInliningMode>(Name)
1006#define ANALYSIS_INLINING_MODE(NAME, CMDFLAG, DESC) \
1007      .Case(CMDFLAG, NAME)
1008#include "clang/Frontend/Analyses.def"
1009      .Default(NumInliningModes);
1010    if (Value == NumInliningModes) {
1011      Diags.Report(diag::err_drv_invalid_value)
1012        << A->getAsString(Args) << Name;
1013      Success = false;
1014    } else {
1015      Opts.InliningMode = Value;
1016    }
1017  }
1018
1019  Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
1020  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
1021  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
1022  Opts.NoRetryExhausted = Args.hasArg(OPT_analyzer_disable_retry_exhausted);
1023  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
1024  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
1025  Opts.AnalyzeNestedBlocks =
1026    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
1027  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
1028  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
1029  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
1030  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
1031  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
1032  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
1033  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
1034  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
1035  Opts.EagerlyTrimEGraph = !Args.hasArg(OPT_analyzer_no_eagerly_trim_egraph);
1036  Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
1037  Opts.InlineMaxStackDepth =
1038    Args.getLastArgIntValue(OPT_analyzer_inline_max_stack_depth,
1039                            Opts.InlineMaxStackDepth, Diags);
1040  Opts.InlineMaxFunctionSize =
1041    Args.getLastArgIntValue(OPT_analyzer_inline_max_function_size,
1042                            Opts.InlineMaxFunctionSize, Diags);
1043
1044  Opts.CheckersControlList.clear();
1045  for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
1046                                             OPT_analyzer_disable_checker),
1047         ie = Args.filtered_end(); it != ie; ++it) {
1048    const Arg *A = *it;
1049    A->claim();
1050    bool enable = (A->getOption().getID() == OPT_analyzer_checker);
1051    // We can have a list of comma separated checker names, e.g:
1052    // '-analyzer-checker=cocoa,unix'
1053    StringRef checkerList = A->getValue(Args);
1054    SmallVector<StringRef, 4> checkers;
1055    checkerList.split(checkers, ",");
1056    for (unsigned i = 0, e = checkers.size(); i != e; ++i)
1057      Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
1058  }
1059
1060  return Success;
1061}
1062
1063static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
1064  Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
1065  Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
1066  return true;
1067}
1068
1069static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
1070                             DiagnosticsEngine &Diags) {
1071  using namespace cc1options;
1072  bool Success = true;
1073
1074  unsigned OptLevel = getOptimizationLevel(Args, IK, Diags);
1075  if (OptLevel > 3) {
1076    Diags.Report(diag::err_drv_invalid_value)
1077      << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel;
1078    OptLevel = 3;
1079    Success = false;
1080  }
1081  Opts.OptimizationLevel = OptLevel;
1082
1083  // We must always run at least the always inlining pass.
1084  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
1085    : CodeGenOptions::OnlyAlwaysInlining;
1086  // -fno-inline-functions overrides OptimizationLevel > 1.
1087  Opts.NoInline = Args.hasArg(OPT_fno_inline);
1088  Opts.Inlining = Args.hasArg(OPT_fno_inline_functions) ?
1089    CodeGenOptions::OnlyAlwaysInlining : Opts.Inlining;
1090
1091  Opts.DebugInfo = Args.hasArg(OPT_g);
1092  Opts.LimitDebugInfo = !Args.hasArg(OPT_fno_limit_debug_info)
1093    || Args.hasArg(OPT_flimit_debug_info);
1094  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
1095  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
1096  Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
1097  Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
1098    OPT_fuse_register_sized_bitfield_access);
1099  Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
1100  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
1101  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
1102  Opts.NoCommon = Args.hasArg(OPT_fno_common);
1103  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
1104  Opts.OptimizeSize = Args.hasArg(OPT_Os);
1105  Opts.OptimizeSize = Args.hasArg(OPT_Oz) ? 2 : Opts.OptimizeSize;
1106  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
1107                            Args.hasArg(OPT_ffreestanding));
1108  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
1109                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
1110
1111  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
1112  Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
1113  Opts.ObjCRuntimeHasARC = Args.hasArg(OPT_fobjc_runtime_has_arc);
1114  Opts.ObjCRuntimeHasTerminate = Args.hasArg(OPT_fobjc_runtime_has_terminate);
1115  Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
1116  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
1117  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
1118  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
1119  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
1120  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
1121  Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
1122  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
1123  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
1124  Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
1125  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
1126  Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
1127                       Args.hasArg(OPT_cl_finite_math_only)||
1128                       Args.hasArg(OPT_cl_fast_relaxed_math));
1129  Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
1130                       Args.hasArg(OPT_cl_finite_math_only)||
1131                       Args.hasArg(OPT_cl_fast_relaxed_math));
1132  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
1133  Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
1134  Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
1135  Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
1136  Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
1137  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
1138  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
1139  Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
1140  Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm);
1141  Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
1142  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
1143  Opts.StrictEnums = Args.hasArg(OPT_fstrict_enums);
1144  Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
1145                      Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
1146                      Args.hasArg(OPT_cl_fast_relaxed_math);
1147  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
1148  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
1149  Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
1150
1151  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
1152  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
1153
1154  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
1155  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
1156
1157  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
1158  Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
1159  Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
1160  Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
1161  Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
1162  Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
1163  Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
1164  Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
1165  if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
1166    StringRef Val = A->getValue(Args);
1167    Val.getAsInteger(10, Opts.StackAlignment);
1168  }
1169
1170  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
1171    StringRef Name = A->getValue(Args);
1172    unsigned Method = llvm::StringSwitch<unsigned>(Name)
1173      .Case("legacy", CodeGenOptions::Legacy)
1174      .Case("non-legacy", CodeGenOptions::NonLegacy)
1175      .Case("mixed", CodeGenOptions::Mixed)
1176      .Default(~0U);
1177    if (Method == ~0U) {
1178      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1179      Success = false;
1180    } else {
1181      Opts.ObjCDispatchMethod = Method;
1182    }
1183  }
1184
1185  return Success;
1186}
1187
1188static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
1189                                      ArgList &Args) {
1190  using namespace cc1options;
1191  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
1192  Opts.Targets = Args.getAllArgValues(OPT_MT);
1193  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
1194  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
1195  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1196  Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
1197  Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
1198  Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
1199}
1200
1201bool clang::ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1202                                DiagnosticsEngine *Diags) {
1203  using namespace cc1options;
1204  bool Success = true;
1205
1206  Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
1207  Opts.DiagnosticSerializationFile =
1208    Args.getLastArgValue(OPT_diagnostic_serialized_file);
1209  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
1210  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
1211  Opts.Pedantic = Args.hasArg(OPT_pedantic);
1212  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
1213  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
1214  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
1215  Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1216                                 OPT_fno_show_column,
1217                                 /*Default=*/true);
1218  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1219  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1220  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
1221
1222  // Default behavior is to not to show note include stacks.
1223  Opts.ShowNoteIncludeStack = false;
1224  if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1225                               OPT_fno_diagnostics_show_note_include_stack))
1226    if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1227      Opts.ShowNoteIncludeStack = true;
1228
1229  StringRef ShowOverloads =
1230    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1231  if (ShowOverloads == "best")
1232    Opts.ShowOverloads = DiagnosticsEngine::Ovl_Best;
1233  else if (ShowOverloads == "all")
1234    Opts.ShowOverloads = DiagnosticsEngine::Ovl_All;
1235  else {
1236    Success = false;
1237    if (Diags)
1238      Diags->Report(diag::err_drv_invalid_value)
1239      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1240      << ShowOverloads;
1241  }
1242
1243  StringRef ShowCategory =
1244    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1245  if (ShowCategory == "none")
1246    Opts.ShowCategories = 0;
1247  else if (ShowCategory == "id")
1248    Opts.ShowCategories = 1;
1249  else if (ShowCategory == "name")
1250    Opts.ShowCategories = 2;
1251  else {
1252    Success = false;
1253    if (Diags)
1254      Diags->Report(diag::err_drv_invalid_value)
1255      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1256      << ShowCategory;
1257  }
1258
1259  StringRef Format =
1260    Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1261  if (Format == "clang")
1262    Opts.Format = DiagnosticOptions::Clang;
1263  else if (Format == "msvc")
1264    Opts.Format = DiagnosticOptions::Msvc;
1265  else if (Format == "vi")
1266    Opts.Format = DiagnosticOptions::Vi;
1267  else {
1268    Success = false;
1269    if (Diags)
1270      Diags->Report(diag::err_drv_invalid_value)
1271      << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1272      << Format;
1273  }
1274
1275  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1276  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1277  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1278  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
1279  Opts.MacroBacktraceLimit
1280    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
1281                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1282  Opts.TemplateBacktraceLimit
1283    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
1284                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
1285                         Diags);
1286  Opts.ConstexprBacktraceLimit
1287    = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit,
1288                         DiagnosticOptions::DefaultConstexprBacktraceLimit,
1289                         Diags);
1290  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
1291                                    DiagnosticOptions::DefaultTabStop, Diags);
1292  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1293    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1294    if (Diags)
1295      Diags->Report(diag::warn_ignoring_ftabstop_value)
1296      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1297  }
1298  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
1299  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
1300
1301  for (arg_iterator it = Args.filtered_begin(OPT_W),
1302         ie = Args.filtered_end(); it != ie; ++it) {
1303    StringRef V = (*it)->getValue(Args);
1304    // "-Wl," and such are not warnings options.
1305    if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,"))
1306      continue;
1307
1308    Opts.Warnings.push_back(V);
1309  }
1310
1311  return Success;
1312}
1313
1314static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1315  Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1316}
1317
1318static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1319                                   DiagnosticsEngine &Diags) {
1320  using namespace cc1options;
1321  Opts.ProgramAction = frontend::ParseSyntaxOnly;
1322  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1323    switch (A->getOption().getID()) {
1324    default:
1325      llvm_unreachable("Invalid option in group!");
1326    case OPT_ast_dump:
1327      Opts.ProgramAction = frontend::ASTDump; break;
1328    case OPT_ast_dump_xml:
1329      Opts.ProgramAction = frontend::ASTDumpXML; break;
1330    case OPT_ast_print:
1331      Opts.ProgramAction = frontend::ASTPrint; break;
1332    case OPT_ast_view:
1333      Opts.ProgramAction = frontend::ASTView; break;
1334    case OPT_dump_raw_tokens:
1335      Opts.ProgramAction = frontend::DumpRawTokens; break;
1336    case OPT_dump_tokens:
1337      Opts.ProgramAction = frontend::DumpTokens; break;
1338    case OPT_S:
1339      Opts.ProgramAction = frontend::EmitAssembly; break;
1340    case OPT_emit_llvm_bc:
1341      Opts.ProgramAction = frontend::EmitBC; break;
1342    case OPT_emit_html:
1343      Opts.ProgramAction = frontend::EmitHTML; break;
1344    case OPT_emit_llvm:
1345      Opts.ProgramAction = frontend::EmitLLVM; break;
1346    case OPT_emit_llvm_only:
1347      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1348    case OPT_emit_codegen_only:
1349      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1350    case OPT_emit_obj:
1351      Opts.ProgramAction = frontend::EmitObj; break;
1352    case OPT_fixit_EQ:
1353      Opts.FixItSuffix = A->getValue(Args);
1354      // fall-through!
1355    case OPT_fixit:
1356      Opts.ProgramAction = frontend::FixIt; break;
1357    case OPT_emit_module:
1358      Opts.ProgramAction = frontend::GenerateModule; break;
1359    case OPT_emit_pch:
1360      Opts.ProgramAction = frontend::GeneratePCH; break;
1361    case OPT_emit_pth:
1362      Opts.ProgramAction = frontend::GeneratePTH; break;
1363    case OPT_init_only:
1364      Opts.ProgramAction = frontend::InitOnly; break;
1365    case OPT_fsyntax_only:
1366      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1367    case OPT_print_decl_contexts:
1368      Opts.ProgramAction = frontend::PrintDeclContext; break;
1369    case OPT_print_preamble:
1370      Opts.ProgramAction = frontend::PrintPreamble; break;
1371    case OPT_E:
1372      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1373    case OPT_rewrite_macros:
1374      Opts.ProgramAction = frontend::RewriteMacros; break;
1375    case OPT_rewrite_objc:
1376      Opts.ProgramAction = frontend::RewriteObjC; break;
1377    case OPT_rewrite_test:
1378      Opts.ProgramAction = frontend::RewriteTest; break;
1379    case OPT_analyze:
1380      Opts.ProgramAction = frontend::RunAnalysis; break;
1381    case OPT_migrate:
1382      Opts.ProgramAction = frontend::MigrateSource; break;
1383    case OPT_Eonly:
1384      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1385    }
1386  }
1387
1388  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1389    Opts.Plugins.push_back(A->getValue(Args,0));
1390    Opts.ProgramAction = frontend::PluginAction;
1391    Opts.ActionName = A->getValue(Args);
1392
1393    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1394           end = Args.filtered_end(); it != end; ++it) {
1395      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1396        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1397    }
1398  }
1399
1400  Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1401  Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
1402  for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
1403    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1404           end = Args.filtered_end(); it != end; ++it) {
1405      if ((*it)->getValue(Args, 0) == Opts.AddPluginActions[i])
1406        Opts.AddPluginArgs[i].push_back((*it)->getValue(Args, 1));
1407    }
1408  }
1409
1410  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1411    Opts.CodeCompletionAt =
1412      ParsedSourceLocation::FromString(A->getValue(Args));
1413    if (Opts.CodeCompletionAt.FileName.empty())
1414      Diags.Report(diag::err_drv_invalid_value)
1415        << A->getAsString(Args) << A->getValue(Args);
1416  }
1417  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1418
1419  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1420  Opts.Plugins = Args.getAllArgValues(OPT_load);
1421  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1422  Opts.ShowHelp = Args.hasArg(OPT_help);
1423  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1424  Opts.ShowCodePatternsInCodeCompletion
1425    = Args.hasArg(OPT_code_completion_patterns);
1426  Opts.ShowGlobalSymbolsInCodeCompletion
1427    = !Args.hasArg(OPT_no_code_completion_globals);
1428  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1429  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1430  Opts.ShowVersion = Args.hasArg(OPT_version);
1431  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1432  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1433  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1434  Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
1435  Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
1436  Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
1437  Opts.OverrideRecordLayoutsFile
1438    = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
1439  if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1440                                     OPT_arcmt_modify,
1441                                     OPT_arcmt_migrate)) {
1442    switch (A->getOption().getID()) {
1443    default:
1444      llvm_unreachable("missed a case");
1445    case OPT_arcmt_check:
1446      Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1447      break;
1448    case OPT_arcmt_modify:
1449      Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1450      break;
1451    case OPT_arcmt_migrate:
1452      Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1453      break;
1454    }
1455  }
1456  Opts.MTMigrateDir = Args.getLastArgValue(OPT_mt_migrate_directory);
1457  Opts.ARCMTMigrateReportOut
1458    = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1459  Opts.ARCMTMigrateEmitARCErrors
1460    = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1461
1462  if (Args.hasArg(OPT_objcmt_migrate_literals))
1463    Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
1464  if (Args.hasArg(OPT_objcmt_migrate_subscripting))
1465    Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
1466
1467  if (Opts.ARCMTAction != FrontendOptions::ARCMT_None &&
1468      Opts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
1469    Diags.Report(diag::err_drv_argument_not_allowed_with)
1470      << "ARC migration" << "ObjC migration";
1471  }
1472
1473  InputKind DashX = IK_None;
1474  if (const Arg *A = Args.getLastArg(OPT_x)) {
1475    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1476      .Case("c", IK_C)
1477      .Case("cl", IK_OpenCL)
1478      .Case("cuda", IK_CUDA)
1479      .Case("c++", IK_CXX)
1480      .Case("objective-c", IK_ObjC)
1481      .Case("objective-c++", IK_ObjCXX)
1482      .Case("cpp-output", IK_PreprocessedC)
1483      .Case("assembler-with-cpp", IK_Asm)
1484      .Case("c++-cpp-output", IK_PreprocessedCXX)
1485      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1486      .Case("objc-cpp-output", IK_PreprocessedObjC)
1487      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1488      .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
1489      .Case("c-header", IK_C)
1490      .Case("cl-header", IK_OpenCL)
1491      .Case("objective-c-header", IK_ObjC)
1492      .Case("c++-header", IK_CXX)
1493      .Case("objective-c++-header", IK_ObjCXX)
1494      .Case("ast", IK_AST)
1495      .Case("ir", IK_LLVM_IR)
1496      .Default(IK_None);
1497    if (DashX == IK_None)
1498      Diags.Report(diag::err_drv_invalid_value)
1499        << A->getAsString(Args) << A->getValue(Args);
1500  }
1501
1502  // '-' is the default input if none is given.
1503  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1504  Opts.Inputs.clear();
1505  if (Inputs.empty())
1506    Inputs.push_back("-");
1507  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1508    InputKind IK = DashX;
1509    if (IK == IK_None) {
1510      IK = FrontendOptions::getInputKindForExtension(
1511        StringRef(Inputs[i]).rsplit('.').second);
1512      // FIXME: Remove this hack.
1513      if (i == 0)
1514        DashX = IK;
1515    }
1516    Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
1517  }
1518
1519  return DashX;
1520}
1521
1522std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1523                                                 void *MainAddr) {
1524  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1525
1526  if (!P.isEmpty()) {
1527    P.eraseComponent();  // Remove /clang from foo/bin/clang
1528    P.eraseComponent();  // Remove /bin   from foo/bin
1529
1530    // Get foo/lib/clang/<version>/include
1531    P.appendComponent("lib");
1532    P.appendComponent("clang");
1533    P.appendComponent(CLANG_VERSION_STRING);
1534  }
1535
1536  return P.str();
1537}
1538
1539static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1540  using namespace cc1options;
1541  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1542  Opts.Verbose = Args.hasArg(OPT_v);
1543  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1544  Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1545  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1546  if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1547    Opts.UseLibcxx = (strcmp(A->getValue(Args), "libc++") == 0);
1548  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1549  Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodule_cache_path);
1550  Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1551
1552  // Add -I..., -F..., and -index-header-map options in order.
1553  bool IsIndexHeaderMap = false;
1554  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1555                                             OPT_index_header_map),
1556       ie = Args.filtered_end(); it != ie; ++it) {
1557    if ((*it)->getOption().matches(OPT_index_header_map)) {
1558      // -index-header-map applies to the next -I or -F.
1559      IsIndexHeaderMap = true;
1560      continue;
1561    }
1562
1563    frontend::IncludeDirGroup Group
1564      = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1565
1566    Opts.AddPath((*it)->getValue(Args), Group, true,
1567                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), false);
1568    IsIndexHeaderMap = false;
1569  }
1570
1571  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1572  StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1573  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1574                                             OPT_iwithprefixbefore),
1575         ie = Args.filtered_end(); it != ie; ++it) {
1576    const Arg *A = *it;
1577    if (A->getOption().matches(OPT_iprefix))
1578      Prefix = A->getValue(Args);
1579    else if (A->getOption().matches(OPT_iwithprefix))
1580      Opts.AddPath(Prefix.str() + A->getValue(Args),
1581                   frontend::System, false, false, false);
1582    else
1583      Opts.AddPath(Prefix.str() + A->getValue(Args),
1584                   frontend::Angled, false, false, false);
1585  }
1586
1587  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1588         ie = Args.filtered_end(); it != ie; ++it)
1589    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, false);
1590  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1591         ie = Args.filtered_end(); it != ie; ++it)
1592    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, false);
1593  for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1594         OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1595    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1596                 !(*it)->getOption().matches(OPT_iwithsysroot));
1597  for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1598         ie = Args.filtered_end(); it != ie; ++it)
1599    Opts.AddPath((*it)->getValue(Args), frontend::System, true, true,
1600                 true);
1601
1602  // Add the paths for the various language specific isystem flags.
1603  for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1604       ie = Args.filtered_end(); it != ie; ++it)
1605    Opts.AddPath((*it)->getValue(Args), frontend::CSystem, true, false, true);
1606  for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1607       ie = Args.filtered_end(); it != ie; ++it)
1608    Opts.AddPath((*it)->getValue(Args), frontend::CXXSystem, true, false, true);
1609  for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1610       ie = Args.filtered_end(); it != ie; ++it)
1611    Opts.AddPath((*it)->getValue(Args), frontend::ObjCSystem, true, false,true);
1612  for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1613       ie = Args.filtered_end(); it != ie; ++it)
1614    Opts.AddPath((*it)->getValue(Args), frontend::ObjCXXSystem, true, false,
1615                 true);
1616
1617  // Add the internal paths from a driver that detects standard include paths.
1618  for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1619                                            OPT_internal_externc_isystem),
1620                    E = Args.filtered_end();
1621       I != E; ++I)
1622    Opts.AddPath((*I)->getValue(Args), frontend::System,
1623                 false, false, /*IgnoreSysRoot=*/true, /*IsInternal=*/true,
1624                 (*I)->getOption().matches(OPT_internal_externc_isystem));
1625}
1626
1627void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1628                                         LangStandard::Kind LangStd) {
1629  // Set some properties which depend solely on the input kind; it would be nice
1630  // to move these to the language standard, and have the driver resolve the
1631  // input kind + language standard.
1632  if (IK == IK_Asm) {
1633    Opts.AsmPreprocessor = 1;
1634  } else if (IK == IK_ObjC ||
1635             IK == IK_ObjCXX ||
1636             IK == IK_PreprocessedObjC ||
1637             IK == IK_PreprocessedObjCXX) {
1638    Opts.ObjC1 = Opts.ObjC2 = 1;
1639  }
1640
1641  if (LangStd == LangStandard::lang_unspecified) {
1642    // Based on the base language, pick one.
1643    switch (IK) {
1644    case IK_None:
1645    case IK_AST:
1646    case IK_LLVM_IR:
1647      llvm_unreachable("Invalid input kind!");
1648    case IK_OpenCL:
1649      LangStd = LangStandard::lang_opencl;
1650      break;
1651    case IK_CUDA:
1652      LangStd = LangStandard::lang_cuda;
1653      break;
1654    case IK_Asm:
1655    case IK_C:
1656    case IK_PreprocessedC:
1657    case IK_ObjC:
1658    case IK_PreprocessedObjC:
1659      LangStd = LangStandard::lang_gnu99;
1660      break;
1661    case IK_CXX:
1662    case IK_PreprocessedCXX:
1663    case IK_ObjCXX:
1664    case IK_PreprocessedObjCXX:
1665      LangStd = LangStandard::lang_gnucxx98;
1666      break;
1667    }
1668  }
1669
1670  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1671  Opts.BCPLComment = Std.hasBCPLComments();
1672  Opts.C99 = Std.isC99();
1673  Opts.C11 = Std.isC11();
1674  Opts.CPlusPlus = Std.isCPlusPlus();
1675  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1676  Opts.Digraphs = Std.hasDigraphs();
1677  Opts.GNUMode = Std.isGNUMode();
1678  Opts.GNUInline = !Std.isC99();
1679  Opts.HexFloats = Std.hasHexFloats();
1680  Opts.ImplicitInt = Std.hasImplicitInt();
1681
1682  // OpenCL has some additional defaults.
1683  if (LangStd == LangStandard::lang_opencl) {
1684    Opts.OpenCL = 1;
1685    Opts.AltiVec = 0;
1686    Opts.CXXOperatorNames = 1;
1687    Opts.LaxVectorConversions = 0;
1688    Opts.DefaultFPContract = 1;
1689  }
1690
1691  if (LangStd == LangStandard::lang_cuda)
1692    Opts.CUDA = 1;
1693
1694  // OpenCL and C++ both have bool, true, false keywords.
1695  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1696
1697  Opts.GNUKeywords = Opts.GNUMode;
1698  Opts.CXXOperatorNames = Opts.CPlusPlus;
1699
1700  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1701  // is specified, or -std is set to a conforming mode.
1702  Opts.Trigraphs = !Opts.GNUMode;
1703
1704  Opts.DollarIdents = !Opts.AsmPreprocessor;
1705}
1706
1707static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1708                          DiagnosticsEngine &Diags) {
1709  // FIXME: Cleanup per-file based stuff.
1710  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1711  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1712    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1713#define LANGSTANDARD(id, name, desc, features) \
1714      .Case(name, LangStandard::lang_##id)
1715#include "clang/Frontend/LangStandards.def"
1716      .Default(LangStandard::lang_unspecified);
1717    if (LangStd == LangStandard::lang_unspecified)
1718      Diags.Report(diag::err_drv_invalid_value)
1719        << A->getAsString(Args) << A->getValue(Args);
1720    else {
1721      // Valid standard, check to make sure language and standard are compatable.
1722      const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1723      switch (IK) {
1724      case IK_C:
1725      case IK_ObjC:
1726      case IK_PreprocessedC:
1727      case IK_PreprocessedObjC:
1728        if (!(Std.isC89() || Std.isC99()))
1729          Diags.Report(diag::err_drv_argument_not_allowed_with)
1730            << A->getAsString(Args) << "C/ObjC";
1731        break;
1732      case IK_CXX:
1733      case IK_ObjCXX:
1734      case IK_PreprocessedCXX:
1735      case IK_PreprocessedObjCXX:
1736        if (!Std.isCPlusPlus())
1737          Diags.Report(diag::err_drv_argument_not_allowed_with)
1738            << A->getAsString(Args) << "C++/ObjC++";
1739        break;
1740      case IK_OpenCL:
1741        if (!Std.isC99())
1742          Diags.Report(diag::err_drv_argument_not_allowed_with)
1743            << A->getAsString(Args) << "OpenCL";
1744        break;
1745      case IK_CUDA:
1746        if (!Std.isCPlusPlus())
1747          Diags.Report(diag::err_drv_argument_not_allowed_with)
1748            << A->getAsString(Args) << "CUDA";
1749        break;
1750      default:
1751        break;
1752      }
1753    }
1754  }
1755
1756  if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1757    if (strcmp(A->getValue(Args), "CL1.1") != 0) {
1758      Diags.Report(diag::err_drv_invalid_value)
1759        << A->getAsString(Args) << A->getValue(Args);
1760    }
1761  }
1762
1763  CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1764
1765  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1766  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1767  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1768  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1769  // name, as it doesn't seem a useful distinction.
1770  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1771                                  Opts.GNUKeywords);
1772
1773  if (Args.hasArg(OPT_fno_operator_names))
1774    Opts.CXXOperatorNames = 0;
1775
1776  if (Opts.ObjC1) {
1777    if (Args.hasArg(OPT_fobjc_gc_only))
1778      Opts.setGC(LangOptions::GCOnly);
1779    else if (Args.hasArg(OPT_fobjc_gc))
1780      Opts.setGC(LangOptions::HybridGC);
1781    else if (Args.hasArg(OPT_fobjc_arc)) {
1782      Opts.ObjCAutoRefCount = 1;
1783      if (Args.hasArg(OPT_fobjc_fragile_abi))
1784        Diags.Report(diag::err_arc_nonfragile_abi);
1785    }
1786
1787    if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1788      Opts.ObjCRuntimeHasWeak = 1;
1789
1790    if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1791      Opts.ObjCInferRelatedResultType = 0;
1792  }
1793
1794  if (Args.hasArg(OPT_fgnu89_inline))
1795    Opts.GNUInline = 1;
1796
1797  if (Args.hasArg(OPT_fapple_kext)) {
1798    if (!Opts.CPlusPlus)
1799      Diags.Report(diag::warn_c_kext);
1800    else
1801      Opts.AppleKext = 1;
1802  }
1803
1804  if (Args.hasArg(OPT_print_ivar_layout))
1805    Opts.ObjCGCBitmapPrint = 1;
1806  if (Args.hasArg(OPT_fno_constant_cfstrings))
1807    Opts.NoConstantCFStrings = 1;
1808
1809  if (Args.hasArg(OPT_faltivec))
1810    Opts.AltiVec = 1;
1811
1812  if (Args.hasArg(OPT_pthread))
1813    Opts.POSIXThreads = 1;
1814
1815  if (Args.hasArg(OPT_fdelayed_template_parsing))
1816    Opts.DelayedTemplateParsing = 1;
1817
1818  StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1819  if (Vis == "default")
1820    Opts.setVisibilityMode(DefaultVisibility);
1821  else if (Vis == "hidden")
1822    Opts.setVisibilityMode(HiddenVisibility);
1823  else if (Vis == "protected")
1824    // FIXME: diagnose if target does not support protected visibility
1825    Opts.setVisibilityMode(ProtectedVisibility);
1826  else
1827    Diags.Report(diag::err_drv_invalid_value)
1828      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1829
1830  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1831    Opts.InlineVisibilityHidden = 1;
1832
1833  if (Args.hasArg(OPT_ftrapv)) {
1834    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1835    // Set the handler, if one is specified.
1836    Opts.OverflowHandler =
1837        Args.getLastArgValue(OPT_ftrapv_handler);
1838  }
1839  else if (Args.hasArg(OPT_fwrapv))
1840    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1841
1842  if (Args.hasArg(OPT_trigraphs))
1843    Opts.Trigraphs = 1;
1844
1845  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1846                                   OPT_fno_dollars_in_identifiers,
1847                                   Opts.DollarIdents);
1848  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1849  Opts.MicrosoftExt
1850    = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility);
1851  Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility);
1852  Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1853  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1854  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1855  Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1856                                   Opts.ConstStrings);
1857  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1858    Opts.LaxVectorConversions = 0;
1859  if (Args.hasArg(OPT_fno_threadsafe_statics))
1860    Opts.ThreadsafeStatics = 0;
1861  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1862  Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1863  Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1864  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1865  Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1866
1867  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1868  Opts.Blocks = Args.hasArg(OPT_fblocks);
1869  Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1870  Opts.Modules = Args.hasArg(OPT_fmodules);
1871  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1872  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1873  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1874  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1875  Opts.FormatExtensions = Args.hasArg(OPT_fformat_extensions);
1876  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1877  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1878  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1879  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1880  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1881  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1882  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1883                                                    Diags);
1884  Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512,
1885                                                    Diags);
1886  Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1887  Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy,
1888                                                    0, Diags);
1889  Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1890  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1891  Opts.ObjCConstantStringClass =
1892    Args.getLastArgValue(OPT_fconstant_string_class);
1893  Opts.ObjCNonFragileABI = !Args.hasArg(OPT_fobjc_fragile_abi);
1894  if (Opts.ObjCNonFragileABI)
1895    Opts.ObjCNonFragileABI2 = true;
1896  Opts.ObjCDefaultSynthProperties =
1897    Args.hasArg(OPT_fobjc_default_synthesize_properties);
1898  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1899  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1900  Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct, 0, Diags);
1901  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1902  Opts.PIELevel = Args.getLastArgIntValue(OPT_pie_level, 0, Diags);
1903  Opts.Static = Args.hasArg(OPT_static_define);
1904  Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1905  Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
1906                        || Args.hasArg(OPT_fdump_record_layouts);
1907  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1908  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1909  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1910  Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1911  Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1912  Opts.MRTD = Args.hasArg(OPT_mrtd);
1913  Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1914  Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1915  Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1916  Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1917  Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
1918  Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
1919  Opts.AddressSanitizer = Args.hasArg(OPT_faddress_sanitizer);
1920  Opts.ThreadSanitizer = Args.hasArg(OPT_fthread_sanitizer);
1921  Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1922  Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1923
1924  // Record whether the __DEPRECATED define was requested.
1925  Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1926                                 OPT_fno_deprecated_macro,
1927                                 Opts.Deprecated);
1928
1929  // FIXME: Eliminate this dependency.
1930  unsigned Opt = getOptimizationLevel(Args, IK, Diags);
1931  Opts.Optimize = Opt != 0;
1932  Opts.OptimizeSize = Args.hasArg(OPT_Os) || Args.hasArg(OPT_Oz);
1933
1934  // This is the __NO_INLINE__ define, which just depends on things like the
1935  // optimization level and -fno-inline, not actually whether the backend has
1936  // inlining enabled.
1937  Opts.NoInlineDefine = !Opt || Args.hasArg(OPT_fno_inline);
1938
1939  Opts.FastMath = Args.hasArg(OPT_ffast_math);
1940
1941  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1942  switch (SSP) {
1943  default:
1944    Diags.Report(diag::err_drv_invalid_value)
1945      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1946    break;
1947  case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1948  case 1: Opts.setStackProtector(LangOptions::SSPOn);  break;
1949  case 2: Opts.setStackProtector(LangOptions::SSPReq); break;
1950  }
1951}
1952
1953static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1954                                  FileManager &FileMgr,
1955                                  DiagnosticsEngine &Diags) {
1956  using namespace cc1options;
1957  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1958  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1959  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1960      Opts.TokenCache = A->getValue(Args);
1961  else
1962    Opts.TokenCache = Opts.ImplicitPTHInclude;
1963  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1964  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1965  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1966
1967  Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1968  for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1969         ie = Args.filtered_end(); it != ie; ++it) {
1970    const Arg *A = *it;
1971    Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
1972  }
1973
1974  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1975    StringRef Value(A->getValue(Args));
1976    size_t Comma = Value.find(',');
1977    unsigned Bytes = 0;
1978    unsigned EndOfLine = 0;
1979
1980    if (Comma == StringRef::npos ||
1981        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1982        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1983      Diags.Report(diag::err_drv_preamble_format);
1984    else {
1985      Opts.PrecompiledPreambleBytes.first = Bytes;
1986      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1987    }
1988  }
1989
1990  // Add macros from the command line.
1991  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1992         ie = Args.filtered_end(); it != ie; ++it) {
1993    if ((*it)->getOption().matches(OPT_D))
1994      Opts.addMacroDef((*it)->getValue(Args));
1995    else
1996      Opts.addMacroUndef((*it)->getValue(Args));
1997  }
1998
1999  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
2000
2001  // Add the ordered list of -includes.
2002  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
2003                                             OPT_include_pth),
2004         ie = Args.filtered_end(); it != ie; ++it) {
2005    const Arg *A = *it;
2006    // PCH is handled specially, we need to extra the original include path.
2007    if (A->getOption().matches(OPT_include_pch)) {
2008      std::string OriginalFile =
2009        ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
2010      if (OriginalFile.empty())
2011        continue;
2012
2013      Opts.Includes.push_back(OriginalFile);
2014    } else
2015      Opts.Includes.push_back(A->getValue(Args));
2016  }
2017
2018  for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
2019         ie = Args.filtered_end(); it != ie; ++it) {
2020    const Arg *A = *it;
2021    Opts.ChainedIncludes.push_back(A->getValue(Args));
2022  }
2023
2024  // Include 'altivec.h' if -faltivec option present
2025  if (Args.hasArg(OPT_faltivec))
2026    Opts.Includes.push_back("altivec.h");
2027
2028  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
2029         ie = Args.filtered_end(); it != ie; ++it) {
2030    const Arg *A = *it;
2031    std::pair<StringRef,StringRef> Split =
2032      StringRef(A->getValue(Args)).split(';');
2033
2034    if (Split.second.empty()) {
2035      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
2036      continue;
2037    }
2038
2039    Opts.addRemappedFile(Split.first, Split.second);
2040  }
2041
2042  if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
2043    StringRef Name = A->getValue(Args);
2044    unsigned Library = llvm::StringSwitch<unsigned>(Name)
2045      .Case("libc++", ARCXX_libcxx)
2046      .Case("libstdc++", ARCXX_libstdcxx)
2047      .Case("none", ARCXX_nolib)
2048      .Default(~0U);
2049    if (Library == ~0U)
2050      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
2051    else
2052      Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
2053  }
2054}
2055
2056static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
2057                                        ArgList &Args) {
2058  using namespace cc1options;
2059  Opts.ShowCPP = !Args.hasArg(OPT_dM);
2060  Opts.ShowComments = Args.hasArg(OPT_C);
2061  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
2062  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
2063  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
2064}
2065
2066static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
2067  using namespace cc1options;
2068  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
2069  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
2070  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
2071  Opts.Features = Args.getAllArgValues(OPT_target_feature);
2072  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
2073  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
2074
2075  // Use the default target triple if unspecified.
2076  if (Opts.Triple.empty())
2077    Opts.Triple = llvm::sys::getDefaultTargetTriple();
2078}
2079
2080//
2081
2082bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
2083                                        const char *const *ArgBegin,
2084                                        const char *const *ArgEnd,
2085                                        DiagnosticsEngine &Diags) {
2086  bool Success = true;
2087
2088  // Parse the arguments.
2089  OwningPtr<OptTable> Opts(createCC1OptTable());
2090  unsigned MissingArgIndex, MissingArgCount;
2091  OwningPtr<InputArgList> Args(
2092    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
2093
2094  // Check for missing argument error.
2095  if (MissingArgCount) {
2096    Diags.Report(diag::err_drv_missing_argument)
2097      << Args->getArgString(MissingArgIndex) << MissingArgCount;
2098    Success = false;
2099  }
2100
2101  // Issue errors on unknown arguments.
2102  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
2103         ie = Args->filtered_end(); it != ie; ++it) {
2104    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
2105    Success = false;
2106  }
2107
2108  Success = ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags) && Success;
2109  Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
2110  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
2111  Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, &Diags)
2112            && Success;
2113  ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
2114  // FIXME: We shouldn't have to pass the DashX option around here
2115  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
2116  Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags)
2117            && Success;
2118  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
2119  if (DashX != IK_AST && DashX != IK_LLVM_IR) {
2120    ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
2121    if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2122      Res.getLangOpts()->ObjCExceptions = 1;
2123  }
2124  // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
2125  // PCH file and find the original header name. Remove the need to do that in
2126  // ParsePreprocessorArgs and remove the FileManager
2127  // parameters from the function and the "FileManager.h" #include.
2128  FileManager FileMgr(Res.getFileSystemOpts());
2129  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
2130  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
2131  ParseTargetArgs(Res.getTargetOpts(), *Args);
2132
2133  return Success;
2134}
2135
2136namespace {
2137
2138  class ModuleSignature {
2139    llvm::SmallVector<uint64_t, 16> Data;
2140    unsigned CurBit;
2141    uint64_t CurValue;
2142
2143  public:
2144    ModuleSignature() : CurBit(0), CurValue(0) { }
2145
2146    void add(uint64_t Value, unsigned Bits);
2147    void add(StringRef Value);
2148    void flush();
2149
2150    llvm::APInt getAsInteger() const;
2151  };
2152}
2153
2154void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
2155  CurValue |= Value << CurBit;
2156  if (CurBit + NumBits < 64) {
2157    CurBit += NumBits;
2158    return;
2159  }
2160
2161  // Add the current word.
2162  Data.push_back(CurValue);
2163
2164  if (CurBit)
2165    CurValue = Value >> (64-CurBit);
2166  else
2167    CurValue = 0;
2168  CurBit = (CurBit+NumBits) & 63;
2169}
2170
2171void ModuleSignature::flush() {
2172  if (CurBit == 0)
2173    return;
2174
2175  Data.push_back(CurValue);
2176  CurBit = 0;
2177  CurValue = 0;
2178}
2179
2180void ModuleSignature::add(StringRef Value) {
2181  for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
2182    add(*I, 8);
2183}
2184
2185llvm::APInt ModuleSignature::getAsInteger() const {
2186  return llvm::APInt(Data.size() * 64, Data);
2187}
2188
2189std::string CompilerInvocation::getModuleHash() const {
2190  ModuleSignature Signature;
2191
2192  // Start the signature with the compiler version.
2193  // FIXME: The full version string can be quite long.  Omit it from the
2194  // module hash for now to avoid failures where the path name becomes too
2195  // long.  An MD5 or similar checksum would work well here.
2196  // Signature.add(getClangFullRepositoryVersion());
2197
2198  // Extend the signature with the language options
2199#define LANGOPT(Name, Bits, Default, Description) \
2200  Signature.add(LangOpts->Name, Bits);
2201#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2202  Signature.add(static_cast<unsigned>(LangOpts->get##Name()), Bits);
2203#define BENIGN_LANGOPT(Name, Bits, Default, Description)
2204#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
2205#include "clang/Basic/LangOptions.def"
2206
2207  // Extend the signature with the target triple
2208  llvm::Triple T(TargetOpts.Triple);
2209  Signature.add((unsigned)T.getArch(), 5);
2210  Signature.add((unsigned)T.getVendor(), 4);
2211  Signature.add((unsigned)T.getOS(), 5);
2212  Signature.add((unsigned)T.getEnvironment(), 4);
2213
2214  // Extend the signature with preprocessor options.
2215  Signature.add(getPreprocessorOpts().UsePredefines, 1);
2216  Signature.add(getPreprocessorOpts().DetailedRecord, 1);
2217
2218  // Hash the preprocessor defines.
2219  // FIXME: This is terrible. Use an MD5 sum of the preprocessor defines.
2220  std::vector<StringRef> MacroDefs;
2221  for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
2222            I = getPreprocessorOpts().Macros.begin(),
2223         IEnd = getPreprocessorOpts().Macros.end();
2224       I != IEnd; ++I) {
2225    if (!I->second)
2226      MacroDefs.push_back(I->first);
2227  }
2228  llvm::array_pod_sort(MacroDefs.begin(), MacroDefs.end());
2229
2230  unsigned PPHashResult = 0;
2231  for (unsigned I = 0, N = MacroDefs.size(); I != N; ++I)
2232    PPHashResult = llvm::HashString(MacroDefs[I], PPHashResult);
2233  Signature.add(PPHashResult, 32);
2234
2235  // We've generated the signature. Treat it as one large APInt that we'll
2236  // encode in base-36 and return.
2237  Signature.flush();
2238  return Signature.getAsInteger().toString(36, /*Signed=*/false);
2239}
2240