CompilerInvocation.cpp revision f315fa81eef1977b3457fd7a7d4639e060fe7278 
1//===--- CompilerInvocation.cpp -------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "clang/Frontend/CompilerInvocation.h"
11#include "clang/Basic/Diagnostic.h"
12#include "clang/Basic/Version.h"
13#include "clang/Basic/FileManager.h"
14#include "clang/Driver/Arg.h"
15#include "clang/Driver/ArgList.h"
16#include "clang/Driver/CC1Options.h"
17#include "clang/Driver/DriverDiagnostic.h"
18#include "clang/Driver/OptTable.h"
19#include "clang/Driver/Option.h"
20#include "clang/Frontend/CompilerInvocation.h"
21#include "clang/Frontend/LangStandard.h"
22#include "clang/Serialization/ASTReader.h"
23#include "llvm/ADT/OwningPtr.h"
24#include "llvm/ADT/SmallVector.h"
25#include "llvm/ADT/StringExtras.h"
26#include "llvm/ADT/StringSwitch.h"
27#include "llvm/ADT/Triple.h"
28#include "llvm/Support/ErrorHandling.h"
29#include "llvm/Support/Host.h"
30#include "llvm/Support/Path.h"
31using namespace clang;
32
33static const char *getAnalysisName(Analyses Kind) {
34  switch (Kind) {
35  default:
36    llvm_unreachable("Unknown analysis kind!");
37#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE)\
38  case NAME: return "-" CMDFLAG;
39#include "clang/Frontend/Analyses.def"
40  }
41}
42
43static const char *getAnalysisStoreName(AnalysisStores Kind) {
44  switch (Kind) {
45  default:
46    llvm_unreachable("Unknown analysis store!");
47#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
48  case NAME##Model: return CMDFLAG;
49#include "clang/Frontend/Analyses.def"
50  }
51}
52
53static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
54  switch (Kind) {
55  default:
56    llvm_unreachable("Unknown analysis constraints!");
57#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
58  case NAME##Model: return CMDFLAG;
59#include "clang/Frontend/Analyses.def"
60  }
61}
62
63static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
64  switch (Kind) {
65  default:
66    llvm_unreachable("Unknown analysis client!");
67#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
68  case PD_##NAME: return CMDFLAG;
69#include "clang/Frontend/Analyses.def"
70  }
71}
72
73//===----------------------------------------------------------------------===//
74// Serialization (to args)
75//===----------------------------------------------------------------------===//
76
77static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
78                               std::vector<std::string> &Res) {
79  for (unsigned i = 0, e = Opts.AnalysisList.size(); i != e; ++i)
80    Res.push_back(getAnalysisName(Opts.AnalysisList[i]));
81  if (Opts.AnalysisStoreOpt != BasicStoreModel) {
82    Res.push_back("-analyzer-store");
83    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
84  }
85  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
86    Res.push_back("-analyzer-constraints");
87    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
88  }
89  if (Opts.AnalysisDiagOpt != PD_HTML) {
90    Res.push_back("-analyzer-output");
91    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
92  }
93  if (!Opts.AnalyzeSpecificFunction.empty()) {
94    Res.push_back("-analyze-function");
95    Res.push_back(Opts.AnalyzeSpecificFunction);
96  }
97  if (Opts.AnalyzeAll)
98    Res.push_back("-analyzer-opt-analyze-headers");
99  if (Opts.AnalyzerDisplayProgress)
100    Res.push_back("-analyzer-display-progress");
101  if (Opts.AnalyzeNestedBlocks)
102    Res.push_back("-analyzer-opt-analyze-nested-blocks");
103  if (Opts.AnalyzerStats)
104    Res.push_back("-analyzer-stats");
105  if (Opts.EagerlyAssume)
106    Res.push_back("-analyzer-eagerly-assume");
107  if (!Opts.PurgeDead)
108    Res.push_back("-analyzer-no-purge-dead");
109  if (Opts.TrimGraph)
110    Res.push_back("-trim-egraph");
111  if (Opts.VisualizeEGDot)
112    Res.push_back("-analyzer-viz-egraph-graphviz");
113  if (Opts.VisualizeEGDot)
114    Res.push_back("-analyzer-viz-egraph-ubigraph");
115  if (Opts.EnableExperimentalChecks)
116    Res.push_back("-analyzer-experimental-checks");
117  if (Opts.EnableExperimentalInternalChecks)
118    Res.push_back("-analyzer-experimental-internal-checks");
119  if (Opts.IdempotentOps)
120    Res.push_back("-analyzer-check-idempotent-operations");
121  if (Opts.ObjCSelfInitCheck)
122    Res.push_back("-analyzer-check-objc-self-init");
123  if (Opts.BufferOverflows)
124    Res.push_back("-analyzer-check-buffer-overflows");
125}
126
127static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
128                              std::vector<std::string> &Res) {
129  if (Opts.DebugInfo)
130    Res.push_back("-g");
131  if (Opts.DisableLLVMOpts)
132    Res.push_back("-disable-llvm-optzns");
133  if (Opts.DisableRedZone)
134    Res.push_back("-disable-red-zone");
135  if (!Opts.DwarfDebugFlags.empty()) {
136    Res.push_back("-dwarf-debug-flags");
137    Res.push_back(Opts.DwarfDebugFlags);
138  }
139  if (!Opts.MergeAllConstants)
140    Res.push_back("-fno-merge-all-constants");
141  if (Opts.NoCommon)
142    Res.push_back("-fno-common");
143  if (Opts.NoImplicitFloat)
144    Res.push_back("-no-implicit-float");
145  if (Opts.OmitLeafFramePointer)
146    Res.push_back("-momit-leaf-frame-pointer");
147  if (Opts.OptimizeSize) {
148    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
149    Res.push_back("-Os");
150  } else if (Opts.OptimizationLevel != 0)
151    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
152  if (!Opts.MainFileName.empty()) {
153    Res.push_back("-main-file-name");
154    Res.push_back(Opts.MainFileName);
155  }
156  // SimplifyLibCalls is only derived.
157  // TimePasses is only derived.
158  // UnitAtATime is unused.
159  // Inlining is only derived.
160
161  // UnrollLoops is derived, but also accepts an option, no
162  // harm in pushing it back here.
163  if (Opts.UnrollLoops)
164    Res.push_back("-funroll-loops");
165  if (Opts.DataSections)
166    Res.push_back("-fdata-sections");
167  if (Opts.FunctionSections)
168    Res.push_back("-ffunction-sections");
169  if (Opts.AsmVerbose)
170    Res.push_back("-masm-verbose");
171  if (!Opts.CodeModel.empty()) {
172    Res.push_back("-mcode-model");
173    Res.push_back(Opts.CodeModel);
174  }
175  if (!Opts.CXAAtExit)
176    Res.push_back("-fno-use-cxa-atexit");
177  if (Opts.CXXCtorDtorAliases)
178    Res.push_back("-mconstructor-aliases");
179  if (!Opts.DebugPass.empty()) {
180    Res.push_back("-mdebug-pass");
181    Res.push_back(Opts.DebugPass);
182  }
183  if (Opts.DisableFPElim)
184    Res.push_back("-mdisable-fp-elim");
185  if (!Opts.FloatABI.empty()) {
186    Res.push_back("-mfloat-abi");
187    Res.push_back(Opts.FloatABI);
188  }
189  if (!Opts.LimitFloatPrecision.empty()) {
190    Res.push_back("-mlimit-float-precision");
191    Res.push_back(Opts.LimitFloatPrecision);
192  }
193  if (Opts.NoZeroInitializedInBSS)
194    Res.push_back("-mno-zero-initialized-bss");
195  switch (Opts.getObjCDispatchMethod()) {
196  case CodeGenOptions::Legacy:
197    break;
198  case CodeGenOptions::Mixed:
199    Res.push_back("-fobjc-dispatch-method=mixed");
200    break;
201  case CodeGenOptions::NonLegacy:
202    Res.push_back("-fobjc-dispatch-method=non-legacy");
203    break;
204  }
205  if (Opts.NumRegisterParameters) {
206    Res.push_back("-mregparm");
207    Res.push_back(llvm::utostr(Opts.NumRegisterParameters));
208  }
209  if (Opts.RelaxAll)
210    Res.push_back("-mrelax-all");
211  if (Opts.SoftFloat)
212    Res.push_back("-msoft-float");
213  if (Opts.UnwindTables)
214    Res.push_back("-munwind-tables");
215  if (Opts.RelocationModel != "pic") {
216    Res.push_back("-mrelocation-model");
217    Res.push_back(Opts.RelocationModel);
218  }
219  if (!Opts.VerifyModule)
220    Res.push_back("-disable-llvm-verifier");
221}
222
223static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
224                                       std::vector<std::string> &Res) {
225  if (Opts.IncludeSystemHeaders)
226    Res.push_back("-sys-header-deps");
227  if (Opts.ShowHeaderIncludes)
228    Res.push_back("-H");
229  if (!Opts.HeaderIncludeOutputFile.empty()) {
230    Res.push_back("-header-include-file");
231    Res.push_back(Opts.HeaderIncludeOutputFile);
232  }
233  if (Opts.UsePhonyTargets)
234    Res.push_back("-MP");
235  if (!Opts.OutputFile.empty()) {
236    Res.push_back("-dependency-file");
237    Res.push_back(Opts.OutputFile);
238  }
239  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
240    Res.push_back("-MT");
241    Res.push_back(Opts.Targets[i]);
242  }
243}
244
245static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
246                                 std::vector<std::string> &Res) {
247  if (Opts.IgnoreWarnings)
248    Res.push_back("-w");
249  if (Opts.NoRewriteMacros)
250    Res.push_back("-Wno-rewrite-macros");
251  if (Opts.Pedantic)
252    Res.push_back("-pedantic");
253  if (Opts.PedanticErrors)
254    Res.push_back("-pedantic-errors");
255  if (!Opts.ShowColumn)
256    Res.push_back("-fno-show-column");
257  if (!Opts.ShowLocation)
258    Res.push_back("-fno-show-source-location");
259  if (!Opts.ShowCarets)
260    Res.push_back("-fno-caret-diagnostics");
261  if (!Opts.ShowFixits)
262    Res.push_back("-fno-diagnostics-fixit-info");
263  if (Opts.ShowSourceRanges)
264    Res.push_back("-fdiagnostics-print-source-range-info");
265  if (Opts.ShowParseableFixits)
266    Res.push_back("-fdiagnostics-parseable-fixits");
267  if (Opts.ShowColors)
268    Res.push_back("-fcolor-diagnostics");
269  if (Opts.VerifyDiagnostics)
270    Res.push_back("-verify");
271  if (Opts.ShowOptionNames)
272    Res.push_back("-fdiagnostics-show-option");
273  if (Opts.ShowCategories == 1)
274    Res.push_back("-fdiagnostics-show-category=id");
275  else if (Opts.ShowCategories == 2)
276    Res.push_back("-fdiagnostics-show-category=name");
277  if (Opts.ErrorLimit) {
278    Res.push_back("-ferror-limit");
279    Res.push_back(llvm::utostr(Opts.ErrorLimit));
280  }
281  if (Opts.MacroBacktraceLimit
282                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
283    Res.push_back("-fmacro-backtrace-limit");
284    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
285  }
286  if (Opts.TemplateBacktraceLimit
287                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
288    Res.push_back("-ftemplate-backtrace-limit");
289    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
290  }
291
292  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
293    Res.push_back("-ftabstop");
294    Res.push_back(llvm::utostr(Opts.TabStop));
295  }
296  if (Opts.MessageLength) {
297    Res.push_back("-fmessage-length");
298    Res.push_back(llvm::utostr(Opts.MessageLength));
299  }
300  if (!Opts.DumpBuildInformation.empty()) {
301    Res.push_back("-dump-build-information");
302    Res.push_back(Opts.DumpBuildInformation);
303  }
304  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
305    Res.push_back("-W" + Opts.Warnings[i]);
306}
307
308static const char *getInputKindName(InputKind Kind) {
309  switch (Kind) {
310  case IK_None:              break;
311  case IK_AST:               return "ast";
312  case IK_Asm:               return "assembler-with-cpp";
313  case IK_C:                 return "c";
314  case IK_CXX:               return "c++";
315  case IK_LLVM_IR:           return "ir";
316  case IK_ObjC:              return "objective-c";
317  case IK_ObjCXX:            return "objective-c++";
318  case IK_OpenCL:            return "cl";
319  case IK_CUDA:              return "cuda";
320  case IK_PreprocessedC:     return "cpp-output";
321  case IK_PreprocessedCXX:   return "c++-cpp-output";
322  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
323  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
324  }
325
326  llvm_unreachable("Unexpected language kind!");
327  return 0;
328}
329
330static const char *getActionName(frontend::ActionKind Kind) {
331  switch (Kind) {
332  case frontend::PluginAction:
333  case frontend::InheritanceView:
334    llvm_unreachable("Invalid kind!");
335
336  case frontend::ASTDump:                return "-ast-dump";
337  case frontend::ASTDumpXML:             return "-ast-dump-xml";
338  case frontend::ASTPrint:               return "-ast-print";
339  case frontend::ASTPrintXML:            return "-ast-print-xml";
340  case frontend::ASTView:                return "-ast-view";
341  case frontend::BoostCon:               return "-boostcon";
342  case frontend::CreateModule:           return "-create-module";
343  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
344  case frontend::DumpTokens:             return "-dump-tokens";
345  case frontend::EmitAssembly:           return "-S";
346  case frontend::EmitBC:                 return "-emit-llvm-bc";
347  case frontend::EmitHTML:               return "-emit-html";
348  case frontend::EmitLLVM:               return "-emit-llvm";
349  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
350  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
351  case frontend::EmitObj:                return "-emit-obj";
352  case frontend::FixIt:                  return "-fixit";
353  case frontend::GeneratePCH:            return "-emit-pch";
354  case frontend::GeneratePTH:            return "-emit-pth";
355  case frontend::InitOnly:               return "-init-only";
356  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
357  case frontend::PrintDeclContext:       return "-print-decl-contexts";
358  case frontend::PrintPreamble:          return "-print-preamble";
359  case frontend::PrintPreprocessedInput: return "-E";
360  case frontend::RewriteMacros:          return "-rewrite-macros";
361  case frontend::RewriteObjC:            return "-rewrite-objc";
362  case frontend::RewriteTest:            return "-rewrite-test";
363  case frontend::RunAnalysis:            return "-analyze";
364  case frontend::RunPreprocessorOnly:    return "-Eonly";
365  }
366
367  llvm_unreachable("Unexpected language kind!");
368  return 0;
369}
370
371static void FileSystemOptsToArgs(const FileSystemOptions &Opts,
372                                 std::vector<std::string> &Res) {
373  if (!Opts.WorkingDir.empty()) {
374    Res.push_back("-working-directory");
375    Res.push_back(Opts.WorkingDir);
376  }
377}
378
379static void FrontendOptsToArgs(const FrontendOptions &Opts,
380                               std::vector<std::string> &Res) {
381  if (Opts.DisableFree)
382    Res.push_back("-disable-free");
383  if (Opts.RelocatablePCH)
384    Res.push_back("-relocatable-pch");
385  if (Opts.ChainedPCH)
386    Res.push_back("-chained-pch");
387  if (Opts.ShowHelp)
388    Res.push_back("-help");
389  if (Opts.ShowMacrosInCodeCompletion)
390    Res.push_back("-code-completion-macros");
391  if (Opts.ShowCodePatternsInCodeCompletion)
392    Res.push_back("-code-completion-patterns");
393  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
394    Res.push_back("-no-code-completion-globals");
395  if (Opts.ShowStats)
396    Res.push_back("-print-stats");
397  if (Opts.ShowTimers)
398    Res.push_back("-ftime-report");
399  if (Opts.ShowVersion)
400    Res.push_back("-version");
401  if (Opts.FixWhatYouCan)
402    Res.push_back("-fix-what-you-can");
403
404  bool NeedLang = false;
405  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
406    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
407        Opts.Inputs[i].first)
408      NeedLang = true;
409  if (NeedLang) {
410    Res.push_back("-x");
411    Res.push_back(getInputKindName(Opts.Inputs[0].first));
412  }
413  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
414    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
415           "Unable to represent this input vector!");
416    Res.push_back(Opts.Inputs[i].second);
417  }
418
419  if (!Opts.OutputFile.empty()) {
420    Res.push_back("-o");
421    Res.push_back(Opts.OutputFile);
422  }
423  if (!Opts.ViewClassInheritance.empty()) {
424    Res.push_back("-cxx-inheritance-view");
425    Res.push_back(Opts.ViewClassInheritance);
426  }
427  if (!Opts.CodeCompletionAt.FileName.empty()) {
428    Res.push_back("-code-completion-at");
429    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
430                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
431                  llvm::utostr(Opts.CodeCompletionAt.Column));
432  }
433  if (Opts.ProgramAction != frontend::InheritanceView &&
434      Opts.ProgramAction != frontend::PluginAction)
435    Res.push_back(getActionName(Opts.ProgramAction));
436  if (!Opts.ActionName.empty()) {
437    Res.push_back("-plugin");
438    Res.push_back(Opts.ActionName);
439    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
440      Res.push_back("-plugin-arg-" + Opts.ActionName);
441      Res.push_back(Opts.PluginArgs[i]);
442    }
443  }
444  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
445    Res.push_back("-load");
446    Res.push_back(Opts.Plugins[i]);
447  }
448  for (unsigned i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
449    Res.push_back("-add-plugin");
450    Res.push_back(Opts.AddPluginActions[i]);
451    for(unsigned ai = 0, ae = Opts.AddPluginArgs.size(); ai != ae; ++ai) {
452      Res.push_back("-plugin-arg-" + Opts.AddPluginActions[i]);
453      Res.push_back(Opts.AddPluginArgs[i][ai]);
454    }
455  }
456  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
457    Res.push_back("-ast-merge");
458    Res.push_back(Opts.ASTMergeFiles[i]);
459  }
460  for (unsigned i = 0, e = Opts.Modules.size(); i != e; ++i) {
461    Res.push_back("-import-module");
462    Res.push_back(Opts.Modules[i]);
463  }
464  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
465    Res.push_back("-mllvm");
466    Res.push_back(Opts.LLVMArgs[i]);
467  }
468}
469
470static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
471                                   std::vector<std::string> &Res) {
472  if (Opts.Sysroot != "/") {
473    Res.push_back("-isysroot");
474    Res.push_back(Opts.Sysroot);
475  }
476
477  for (unsigned i = 0, e = Opts.CXXSystemIncludes.size(); i != e; ++i) {
478    Res.push_back("-cxx-system-include");
479    Res.push_back(Opts.CXXSystemIncludes[i]);
480  }
481
482  /// User specified include entries.
483  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
484    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
485    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
486      llvm::report_fatal_error("Invalid option set!");
487    if (E.IsUserSupplied) {
488      if (E.Group == frontend::After) {
489        Res.push_back("-idirafter");
490      } else if (E.Group == frontend::Quoted) {
491        Res.push_back("-iquote");
492      } else if (E.Group == frontend::System) {
493        Res.push_back("-isystem");
494      } else {
495        assert(E.Group == frontend::Angled && "Invalid group!");
496        Res.push_back(E.IsFramework ? "-F" : "-I");
497      }
498    } else {
499      if (E.Group != frontend::Angled && E.Group != frontend::System)
500        llvm::report_fatal_error("Invalid option set!");
501      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
502                    "-iwithprefix");
503    }
504    Res.push_back(E.Path);
505  }
506
507  if (!Opts.EnvIncPath.empty()) {
508    // FIXME: Provide an option for this, and move env detection to driver.
509    llvm::report_fatal_error("Not yet implemented!");
510  }
511  if (!Opts.CEnvIncPath.empty()) {
512    // FIXME: Provide an option for this, and move env detection to driver.
513    llvm::report_fatal_error("Not yet implemented!");
514  }
515  if (!Opts.ObjCEnvIncPath.empty()) {
516    // FIXME: Provide an option for this, and move env detection to driver.
517    llvm::report_fatal_error("Not yet implemented!");
518  }
519  if (!Opts.CXXEnvIncPath.empty()) {
520    // FIXME: Provide an option for this, and move env detection to driver.
521    llvm::report_fatal_error("Not yet implemented!");
522  }
523  if (!Opts.ObjCXXEnvIncPath.empty()) {
524    // FIXME: Provide an option for this, and move env detection to driver.
525    llvm::report_fatal_error("Not yet implemented!");
526  }
527  if (!Opts.ResourceDir.empty()) {
528    Res.push_back("-resource-dir");
529    Res.push_back(Opts.ResourceDir);
530  }
531  if (!Opts.UseStandardIncludes)
532    Res.push_back("-nostdinc");
533  if (!Opts.UseStandardCXXIncludes)
534    Res.push_back("-nostdinc++");
535  if (Opts.Verbose)
536    Res.push_back("-v");
537}
538
539static void LangOptsToArgs(const LangOptions &Opts,
540                           std::vector<std::string> &Res) {
541  LangOptions DefaultLangOpts;
542
543  // FIXME: Need to set -std to get all the implicit options.
544
545  // FIXME: We want to only pass options relative to the defaults, which
546  // requires constructing a target. :(
547  //
548  // It would be better to push the all target specific choices into the driver,
549  // so that everything below that was more uniform.
550
551  if (Opts.Trigraphs)
552    Res.push_back("-trigraphs");
553  // Implicit based on the input kind:
554  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
555  // Implicit based on the input language standard:
556  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
557  if (Opts.DollarIdents)
558    Res.push_back("-fdollars-in-identifiers");
559  if (Opts.GNUMode && !Opts.GNUKeywords)
560    Res.push_back("-fno-gnu-keywords");
561  if (!Opts.GNUMode && Opts.GNUKeywords)
562    Res.push_back("-fgnu-keywords");
563  if (Opts.Microsoft)
564    Res.push_back("-fms-extensions");
565  if (Opts.MSCVersion != 0)
566    Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
567  if (Opts.Borland)
568    Res.push_back("-fborland-extensions");
569  if (Opts.ObjCNonFragileABI)
570    Res.push_back("-fobjc-nonfragile-abi");
571  if (Opts.ObjCNonFragileABI2)
572    Res.push_back("-fobjc-nonfragile-abi");
573  if (Opts.ObjCDefaultSynthProperties)
574    Res.push_back("-fobjc-default-synthesize-properties");
575  // NoInline is implicit.
576  if (!Opts.CXXOperatorNames)
577    Res.push_back("-fno-operator-names");
578  if (Opts.PascalStrings)
579    Res.push_back("-fpascal-strings");
580  if (Opts.CatchUndefined)
581    Res.push_back("-fcatch-undefined-behavior");
582  if (Opts.WritableStrings)
583    Res.push_back("-fwritable-strings");
584  if (Opts.ConstStrings)
585    Res.push_back("-Wwrite-strings");
586  if (!Opts.LaxVectorConversions)
587    Res.push_back("-fno-lax-vector-conversions");
588  if (Opts.AltiVec)
589    Res.push_back("-faltivec");
590  if (Opts.Exceptions)
591    Res.push_back("-fexceptions");
592  if (Opts.SjLjExceptions)
593    Res.push_back("-fsjlj-exceptions");
594  if (!Opts.RTTI)
595    Res.push_back("-fno-rtti");
596  if (Opts.MSBitfields)
597    Res.push_back("-mms-bitfields");
598  if (!Opts.NeXTRuntime)
599    Res.push_back("-fgnu-runtime");
600  if (Opts.Freestanding)
601    Res.push_back("-ffreestanding");
602  if (Opts.NoBuiltin)
603    Res.push_back("-fno-builtin");
604  if (!Opts.AssumeSaneOperatorNew)
605    Res.push_back("-fno-assume-sane-operator-new");
606  if (!Opts.ThreadsafeStatics)
607    Res.push_back("-fno-threadsafe-statics");
608  if (Opts.POSIXThreads)
609    Res.push_back("-pthread");
610  if (Opts.Blocks)
611    Res.push_back("-fblocks");
612  if (Opts.EmitAllDecls)
613    Res.push_back("-femit-all-decls");
614  if (Opts.MathErrno)
615    Res.push_back("-fmath-errno");
616  switch (Opts.getSignedOverflowBehavior()) {
617  case LangOptions::SOB_Undefined: break;
618  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
619  case LangOptions::SOB_Trapping:
620    Res.push_back("-ftrapv"); break;
621    if (!Opts.OverflowHandler.empty()) {
622      Res.push_back("-ftrapv-handler");
623      Res.push_back(Opts.OverflowHandler);
624    }
625  }
626  if (Opts.HeinousExtensions)
627    Res.push_back("-fheinous-gnu-extensions");
628  // Optimize is implicit.
629  // OptimizeSize is implicit.
630  if (Opts.Static)
631    Res.push_back("-static-define");
632  if (Opts.DumpRecordLayouts)
633    Res.push_back("-fdump-record-layouts");
634  if (Opts.DumpVTableLayouts)
635    Res.push_back("-fdump-vtable-layouts");
636  if (Opts.NoBitFieldTypeAlign)
637    Res.push_back("-fno-bitfield-type-alignment");
638  if (Opts.SjLjExceptions)
639    Res.push_back("-fsjlj-exceptions");
640  if (Opts.PICLevel) {
641    Res.push_back("-pic-level");
642    Res.push_back(llvm::utostr(Opts.PICLevel));
643  }
644  if (Opts.ObjCGCBitmapPrint)
645    Res.push_back("-print-ivar-layout");
646  if (Opts.NoConstantCFStrings)
647    Res.push_back("-fno-constant-cfstrings");
648  if (!Opts.AccessControl)
649    Res.push_back("-fno-access-control");
650  if (!Opts.CharIsSigned)
651    Res.push_back("-fno-signed-char");
652  if (Opts.ShortWChar)
653    Res.push_back("-fshort-wchar");
654  if (!Opts.ElideConstructors)
655    Res.push_back("-fno-elide-constructors");
656  if (Opts.getGCMode() != LangOptions::NonGC) {
657    if (Opts.getGCMode() == LangOptions::HybridGC) {
658      Res.push_back("-fobjc-gc");
659    } else {
660      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
661      Res.push_back("-fobjc-gc-only");
662    }
663  }
664  if (Opts.AppleKext)
665    Res.push_back("-fapple-kext");
666
667  if (Opts.getVisibilityMode() != DefaultVisibility) {
668    Res.push_back("-fvisibility");
669    if (Opts.getVisibilityMode() == HiddenVisibility) {
670      Res.push_back("hidden");
671    } else {
672      assert(Opts.getVisibilityMode() == ProtectedVisibility &&
673             "Invalid visibility!");
674      Res.push_back("protected");
675    }
676  }
677  if (Opts.InlineVisibilityHidden)
678    Res.push_back("-fvisibility-inlines-hidden");
679
680  if (Opts.getStackProtectorMode() != 0) {
681    Res.push_back("-stack-protector");
682    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
683  }
684  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
685    Res.push_back("-ftemplate-depth");
686    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
687  }
688  if (!Opts.ObjCConstantStringClass.empty()) {
689    Res.push_back("-fconstant-string-class");
690    Res.push_back(Opts.ObjCConstantStringClass);
691  }
692}
693
694static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
695                                   std::vector<std::string> &Res) {
696  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
697    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
698                  Opts.Macros[i].first);
699  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
700    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
701    Res.push_back("-include");
702    Res.push_back(Opts.Includes[i]);
703  }
704  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
705    Res.push_back("-imacros");
706    Res.push_back(Opts.MacroIncludes[i]);
707  }
708  if (!Opts.UsePredefines)
709    Res.push_back("-undef");
710  if (Opts.DetailedRecord)
711    Res.push_back("-detailed-preprocessing-record");
712  if (!Opts.ImplicitPCHInclude.empty()) {
713    Res.push_back("-include-pch");
714    Res.push_back(Opts.ImplicitPCHInclude);
715  }
716  if (!Opts.ImplicitPTHInclude.empty()) {
717    Res.push_back("-include-pth");
718    Res.push_back(Opts.ImplicitPTHInclude);
719  }
720  if (!Opts.TokenCache.empty()) {
721    if (Opts.ImplicitPTHInclude.empty()) {
722      Res.push_back("-token-cache");
723      Res.push_back(Opts.TokenCache);
724    } else
725      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
726             "Unsupported option combination!");
727  }
728  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
729    Res.push_back("-remap-file");
730    Res.push_back(Opts.RemappedFiles[i].first + ";" +
731                  Opts.RemappedFiles[i].second);
732  }
733}
734
735static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
736                                         std::vector<std::string> &Res) {
737  if (!Opts.ShowCPP && !Opts.ShowMacros)
738    llvm::report_fatal_error("Invalid option combination!");
739
740  if (Opts.ShowCPP && Opts.ShowMacros)
741    Res.push_back("-dD");
742  else if (!Opts.ShowCPP && Opts.ShowMacros)
743    Res.push_back("-dM");
744
745  if (!Opts.ShowLineMarkers)
746    Res.push_back("-P");
747  if (Opts.ShowComments)
748    Res.push_back("-C");
749  if (Opts.ShowMacroComments)
750    Res.push_back("-CC");
751}
752
753static void TargetOptsToArgs(const TargetOptions &Opts,
754                             std::vector<std::string> &Res) {
755  Res.push_back("-triple");
756  Res.push_back(Opts.Triple);
757  if (!Opts.CPU.empty()) {
758    Res.push_back("-target-cpu");
759    Res.push_back(Opts.CPU);
760  }
761  if (!Opts.ABI.empty()) {
762    Res.push_back("-target-abi");
763    Res.push_back(Opts.ABI);
764  }
765  if (!Opts.LinkerVersion.empty()) {
766    Res.push_back("-target-linker-version");
767    Res.push_back(Opts.LinkerVersion);
768  }
769  if (!Opts.CXXABI.empty()) {
770    Res.push_back("-cxx-abi");
771    Res.push_back(Opts.CXXABI);
772  }
773  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
774    Res.push_back("-target-feature");
775    Res.push_back(Opts.Features[i]);
776  }
777}
778
779void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
780  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
781  CodeGenOptsToArgs(getCodeGenOpts(), Res);
782  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
783  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
784  FileSystemOptsToArgs(getFileSystemOpts(), Res);
785  FrontendOptsToArgs(getFrontendOpts(), Res);
786  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
787  LangOptsToArgs(getLangOpts(), Res);
788  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
789  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
790  TargetOptsToArgs(getTargetOpts(), Res);
791}
792
793//===----------------------------------------------------------------------===//
794// Deserialization (to args)
795//===----------------------------------------------------------------------===//
796
797using namespace clang::driver;
798using namespace clang::driver::cc1options;
799
800//
801
802static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
803                                     Diagnostic &Diags) {
804  unsigned DefaultOpt = 0;
805  if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
806    DefaultOpt = 2;
807  // -Os implies -O2
808  return Args.hasArg(OPT_Os) ? 2 :
809    Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
810}
811
812static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
813                              Diagnostic &Diags) {
814  using namespace cc1options;
815
816  Opts.AnalysisList.clear();
817#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
818  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
819#include "clang/Frontend/Analyses.def"
820
821  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
822    llvm::StringRef Name = A->getValue(Args);
823    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
824#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
825      .Case(CMDFLAG, NAME##Model)
826#include "clang/Frontend/Analyses.def"
827      .Default(NumStores);
828    // FIXME: Error handling.
829    if (Value == NumStores)
830      Diags.Report(diag::err_drv_invalid_value)
831        << A->getAsString(Args) << Name;
832    else
833      Opts.AnalysisStoreOpt = Value;
834  }
835
836  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
837    llvm::StringRef Name = A->getValue(Args);
838    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
839#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
840      .Case(CMDFLAG, NAME##Model)
841#include "clang/Frontend/Analyses.def"
842      .Default(NumConstraints);
843    // FIXME: Error handling.
844    if (Value == NumConstraints)
845      Diags.Report(diag::err_drv_invalid_value)
846        << A->getAsString(Args) << Name;
847    else
848      Opts.AnalysisConstraintsOpt = Value;
849  }
850
851  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
852    llvm::StringRef Name = A->getValue(Args);
853    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
854#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
855      .Case(CMDFLAG, PD_##NAME)
856#include "clang/Frontend/Analyses.def"
857      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
858    // FIXME: Error handling.
859    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
860      Diags.Report(diag::err_drv_invalid_value)
861        << A->getAsString(Args) << Name;
862    else
863      Opts.AnalysisDiagOpt = Value;
864  }
865
866  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
867  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
868  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
869  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
870  Opts.AnalyzeNestedBlocks =
871    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
872  Opts.AnalyzerStats = Args.hasArg(OPT_analysis_AnalyzerStats);
873  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
874  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
875  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
876  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
877  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
878  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
879  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
880  Opts.EnableExperimentalInternalChecks =
881    Args.hasArg(OPT_analyzer_experimental_internal_checks);
882  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
883  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
884  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
885  Opts.EagerlyTrimEGraph = !Args.hasArg(OPT_analyzer_no_eagerly_trim_egraph);
886  Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
887  Opts.IdempotentOps = Args.hasArg(OPT_analysis_WarnIdempotentOps);
888  Opts.ObjCSelfInitCheck = Args.hasArg(OPT_analysis_WarnObjCSelfInit);
889  Opts.BufferOverflows = Args.hasArg(OPT_analysis_WarnBufferOverflows);
890}
891
892static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
893                             Diagnostic &Diags) {
894  using namespace cc1options;
895
896  Opts.OptimizationLevel = getOptimizationLevel(Args, IK, Diags);
897  if (Opts.OptimizationLevel > 3) {
898    Diags.Report(diag::err_drv_invalid_value)
899      << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
900    Opts.OptimizationLevel = 3;
901  }
902
903  // We must always run at least the always inlining pass.
904  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
905    : CodeGenOptions::OnlyAlwaysInlining;
906
907  Opts.DebugInfo = Args.hasArg(OPT_g);
908  Opts.LimitDebugInfo = Args.hasArg(OPT_flimit_debug_info);
909  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
910  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
911  Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
912  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
913  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
914  Opts.NoCommon = Args.hasArg(OPT_fno_common);
915  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
916  Opts.OptimizeSize = Args.hasArg(OPT_Os);
917  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
918                            Args.hasArg(OPT_ffreestanding));
919  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
920                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
921
922  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
923  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
924  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
925  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
926  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
927  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
928  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
929  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
930  Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
931  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
932  Opts.NoInfsFPMath = Opts.NoNaNsFPMath = Args.hasArg(OPT_cl_finite_math_only)||
933                                          Args.hasArg(OPT_cl_fast_relaxed_math);
934  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
935  Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
936  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
937  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
938  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
939  Opts.UnsafeFPMath = Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
940                      Args.hasArg(OPT_cl_fast_relaxed_math);
941  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
942  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
943
944  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
945  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
946
947  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
948  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
949
950  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
951  Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
952
953  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
954    llvm::StringRef Name = A->getValue(Args);
955    unsigned Method = llvm::StringSwitch<unsigned>(Name)
956      .Case("legacy", CodeGenOptions::Legacy)
957      .Case("non-legacy", CodeGenOptions::NonLegacy)
958      .Case("mixed", CodeGenOptions::Mixed)
959      .Default(~0U);
960    if (Method == ~0U)
961      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
962    else
963      Opts.ObjCDispatchMethod = Method;
964  }
965}
966
967static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
968                                      ArgList &Args) {
969  using namespace cc1options;
970  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
971  Opts.Targets = Args.getAllArgValues(OPT_MT);
972  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
973  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
974  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
975  Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
976}
977
978static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
979                                Diagnostic &Diags) {
980  using namespace cc1options;
981  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
982  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
983  Opts.Pedantic = Args.hasArg(OPT_pedantic);
984  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
985  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
986  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
987  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
988  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
989  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
990  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
991
992  llvm::StringRef ShowOverloads =
993    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
994  if (ShowOverloads == "best")
995    Opts.ShowOverloads = Diagnostic::Ovl_Best;
996  else if (ShowOverloads == "all")
997    Opts.ShowOverloads = Diagnostic::Ovl_All;
998  else
999    Diags.Report(diag::err_drv_invalid_value)
1000      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1001      << ShowOverloads;
1002
1003  llvm::StringRef ShowCategory =
1004    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1005  if (ShowCategory == "none")
1006    Opts.ShowCategories = 0;
1007  else if (ShowCategory == "id")
1008    Opts.ShowCategories = 1;
1009  else if (ShowCategory == "name")
1010    Opts.ShowCategories = 2;
1011  else
1012    Diags.Report(diag::err_drv_invalid_value)
1013      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1014      << ShowCategory;
1015
1016  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1017  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1018  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1019  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
1020  Opts.MacroBacktraceLimit
1021    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
1022                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1023  Opts.TemplateBacktraceLimit
1024    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
1025                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
1026                         Diags);
1027  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
1028                                    DiagnosticOptions::DefaultTabStop, Diags);
1029  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1030    Diags.Report(diag::warn_ignoring_ftabstop_value)
1031      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1032    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1033  }
1034  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
1035  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
1036  Opts.Warnings = Args.getAllArgValues(OPT_W);
1037}
1038
1039static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1040  Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1041}
1042
1043static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1044                                   Diagnostic &Diags) {
1045  using namespace cc1options;
1046  Opts.ProgramAction = frontend::ParseSyntaxOnly;
1047  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1048    switch (A->getOption().getID()) {
1049    default:
1050      assert(0 && "Invalid option in group!");
1051    case OPT_ast_dump:
1052      Opts.ProgramAction = frontend::ASTDump; break;
1053    case OPT_ast_dump_xml:
1054      Opts.ProgramAction = frontend::ASTDumpXML; break;
1055    case OPT_ast_print:
1056      Opts.ProgramAction = frontend::ASTPrint; break;
1057    case OPT_ast_print_xml:
1058      Opts.ProgramAction = frontend::ASTPrintXML; break;
1059    case OPT_ast_view:
1060      Opts.ProgramAction = frontend::ASTView; break;
1061    case OPT_boostcon:
1062      Opts.ProgramAction = frontend::BoostCon; break;
1063    case OPT_dump_raw_tokens:
1064      Opts.ProgramAction = frontend::DumpRawTokens; break;
1065    case OPT_dump_tokens:
1066      Opts.ProgramAction = frontend::DumpTokens; break;
1067    case OPT_S:
1068      Opts.ProgramAction = frontend::EmitAssembly; break;
1069    case OPT_emit_llvm_bc:
1070      Opts.ProgramAction = frontend::EmitBC; break;
1071    case OPT_emit_html:
1072      Opts.ProgramAction = frontend::EmitHTML; break;
1073    case OPT_emit_llvm:
1074      Opts.ProgramAction = frontend::EmitLLVM; break;
1075    case OPT_emit_llvm_only:
1076      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1077    case OPT_emit_codegen_only:
1078      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1079    case OPT_emit_obj:
1080      Opts.ProgramAction = frontend::EmitObj; break;
1081    case OPT_fixit_EQ:
1082      Opts.FixItSuffix = A->getValue(Args);
1083      // fall-through!
1084    case OPT_fixit:
1085      Opts.ProgramAction = frontend::FixIt; break;
1086    case OPT_emit_pch:
1087      Opts.ProgramAction = frontend::GeneratePCH; break;
1088    case OPT_emit_pth:
1089      Opts.ProgramAction = frontend::GeneratePTH; break;
1090    case OPT_init_only:
1091      Opts.ProgramAction = frontend::InitOnly; break;
1092    case OPT_fsyntax_only:
1093      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1094    case OPT_print_decl_contexts:
1095      Opts.ProgramAction = frontend::PrintDeclContext; break;
1096    case OPT_print_preamble:
1097      Opts.ProgramAction = frontend::PrintPreamble; break;
1098    case OPT_E:
1099      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1100    case OPT_rewrite_macros:
1101      Opts.ProgramAction = frontend::RewriteMacros; break;
1102    case OPT_rewrite_objc:
1103      Opts.ProgramAction = frontend::RewriteObjC; break;
1104    case OPT_rewrite_test:
1105      Opts.ProgramAction = frontend::RewriteTest; break;
1106    case OPT_analyze:
1107      Opts.ProgramAction = frontend::RunAnalysis; break;
1108    case OPT_Eonly:
1109      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1110    case OPT_create_module:
1111      Opts.ProgramAction = frontend::CreateModule; break;
1112    }
1113  }
1114
1115  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1116    Opts.Plugins.push_back(A->getValue(Args,0));
1117    Opts.ProgramAction = frontend::PluginAction;
1118    Opts.ActionName = A->getValue(Args);
1119
1120    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1121           end = Args.filtered_end(); it != end; ++it) {
1122      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1123        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1124    }
1125  }
1126
1127  Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1128  Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
1129  for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
1130    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1131           end = Args.filtered_end(); it != end; ++it) {
1132      if ((*it)->getValue(Args, 0) == Opts.AddPluginActions[i])
1133        Opts.AddPluginArgs[i].push_back((*it)->getValue(Args, 1));
1134    }
1135  }
1136
1137  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1138    Opts.CodeCompletionAt =
1139      ParsedSourceLocation::FromString(A->getValue(Args));
1140    if (Opts.CodeCompletionAt.FileName.empty())
1141      Diags.Report(diag::err_drv_invalid_value)
1142        << A->getAsString(Args) << A->getValue(Args);
1143  }
1144  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1145
1146  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1147  Opts.Plugins = Args.getAllArgValues(OPT_load);
1148  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1149  Opts.ChainedPCH = Args.hasArg(OPT_chained_pch);
1150  Opts.ShowHelp = Args.hasArg(OPT_help);
1151  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1152  Opts.ShowCodePatternsInCodeCompletion
1153    = Args.hasArg(OPT_code_completion_patterns);
1154  Opts.ShowGlobalSymbolsInCodeCompletion
1155    = !Args.hasArg(OPT_no_code_completion_globals);
1156  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1157  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1158  Opts.ShowVersion = Args.hasArg(OPT_version);
1159  Opts.ViewClassInheritance = Args.getLastArgValue(OPT_cxx_inheritance_view);
1160  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1161  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1162  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1163  Opts.Modules = Args.getAllArgValues(OPT_import_module);
1164
1165  InputKind DashX = IK_None;
1166  if (const Arg *A = Args.getLastArg(OPT_x)) {
1167    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1168      .Case("c", IK_C)
1169      .Case("cl", IK_OpenCL)
1170      .Case("c", IK_C)
1171      .Case("cl", IK_OpenCL)
1172      .Case("cuda", IK_CUDA)
1173      .Case("c++", IK_CXX)
1174      .Case("objective-c", IK_ObjC)
1175      .Case("objective-c++", IK_ObjCXX)
1176      .Case("cpp-output", IK_PreprocessedC)
1177      .Case("assembler-with-cpp", IK_Asm)
1178      .Case("c++-cpp-output", IK_PreprocessedCXX)
1179      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1180      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1181      .Case("c-header", IK_C)
1182      .Case("objective-c-header", IK_ObjC)
1183      .Case("c++-header", IK_CXX)
1184      .Case("objective-c++-header", IK_ObjCXX)
1185      .Case("ast", IK_AST)
1186      .Case("ir", IK_LLVM_IR)
1187      .Default(IK_None);
1188    if (DashX == IK_None)
1189      Diags.Report(diag::err_drv_invalid_value)
1190        << A->getAsString(Args) << A->getValue(Args);
1191  }
1192
1193  // '-' is the default input if none is given.
1194  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1195  Opts.Inputs.clear();
1196  if (Inputs.empty())
1197    Inputs.push_back("-");
1198  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1199    InputKind IK = DashX;
1200    if (IK == IK_None) {
1201      IK = FrontendOptions::getInputKindForExtension(
1202        llvm::StringRef(Inputs[i]).rsplit('.').second);
1203      // FIXME: Remove this hack.
1204      if (i == 0)
1205        DashX = IK;
1206    }
1207    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1208  }
1209
1210  return DashX;
1211}
1212
1213std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1214                                                 void *MainAddr) {
1215  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1216
1217  if (!P.isEmpty()) {
1218    P.eraseComponent();  // Remove /clang from foo/bin/clang
1219    P.eraseComponent();  // Remove /bin   from foo/bin
1220
1221    // Get foo/lib/clang/<version>/include
1222    P.appendComponent("lib");
1223    P.appendComponent("clang");
1224    P.appendComponent(CLANG_VERSION_STRING);
1225  }
1226
1227  return P.str();
1228}
1229
1230static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1231  using namespace cc1options;
1232  Opts.CXXSystemIncludes = Args.getAllArgValues(OPT_cxx_system_include);
1233  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1234  Opts.Verbose = Args.hasArg(OPT_v);
1235  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1236  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1237  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1238  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1239
1240  // Add -I... and -F... options in order.
1241  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1242         ie = Args.filtered_end(); it != ie; ++it)
1243    Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1244                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1245
1246  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1247  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1248  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1249                                             OPT_iwithprefixbefore),
1250         ie = Args.filtered_end(); it != ie; ++it) {
1251    const Arg *A = *it;
1252    if (A->getOption().matches(OPT_iprefix))
1253      Prefix = A->getValue(Args);
1254    else if (A->getOption().matches(OPT_iwithprefix))
1255      Opts.AddPath(Prefix.str() + A->getValue(Args),
1256                   frontend::System, false, false, true);
1257    else
1258      Opts.AddPath(Prefix.str() + A->getValue(Args),
1259                   frontend::Angled, false, false, true);
1260  }
1261
1262  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1263         ie = Args.filtered_end(); it != ie; ++it)
1264    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, true);
1265  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1266         ie = Args.filtered_end(); it != ie; ++it)
1267    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, true);
1268  for (arg_iterator it = Args.filtered_begin(OPT_isystem, OPT_iwithsysroot),
1269         ie = Args.filtered_end(); it != ie; ++it)
1270    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1271                 (*it)->getOption().matches(OPT_iwithsysroot));
1272
1273  // FIXME: Need options for the various environment variables!
1274}
1275
1276void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1277                                         LangStandard::Kind LangStd) {
1278  // Set some properties which depend soley on the input kind; it would be nice
1279  // to move these to the language standard, and have the driver resolve the
1280  // input kind + language standard.
1281  if (IK == IK_Asm) {
1282    Opts.AsmPreprocessor = 1;
1283  } else if (IK == IK_ObjC ||
1284             IK == IK_ObjCXX ||
1285             IK == IK_PreprocessedObjC ||
1286             IK == IK_PreprocessedObjCXX) {
1287    Opts.ObjC1 = Opts.ObjC2 = 1;
1288  }
1289
1290  if (LangStd == LangStandard::lang_unspecified) {
1291    // Based on the base language, pick one.
1292    switch (IK) {
1293    case IK_None:
1294    case IK_AST:
1295    case IK_LLVM_IR:
1296      assert(0 && "Invalid input kind!");
1297    case IK_OpenCL:
1298      LangStd = LangStandard::lang_opencl;
1299      break;
1300    case IK_CUDA:
1301      LangStd = LangStandard::lang_cuda;
1302      break;
1303    case IK_Asm:
1304    case IK_C:
1305    case IK_PreprocessedC:
1306    case IK_ObjC:
1307    case IK_PreprocessedObjC:
1308      LangStd = LangStandard::lang_gnu99;
1309      break;
1310    case IK_CXX:
1311    case IK_PreprocessedCXX:
1312    case IK_ObjCXX:
1313    case IK_PreprocessedObjCXX:
1314      LangStd = LangStandard::lang_gnucxx98;
1315      break;
1316    }
1317  }
1318
1319  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1320  Opts.BCPLComment = Std.hasBCPLComments();
1321  Opts.C99 = Std.isC99();
1322  Opts.CPlusPlus = Std.isCPlusPlus();
1323  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1324  Opts.Digraphs = Std.hasDigraphs();
1325  Opts.GNUMode = Std.isGNUMode();
1326  Opts.GNUInline = !Std.isC99();
1327  Opts.HexFloats = Std.hasHexFloats();
1328  Opts.ImplicitInt = Std.hasImplicitInt();
1329
1330  // OpenCL has some additional defaults.
1331  if (LangStd == LangStandard::lang_opencl) {
1332    Opts.OpenCL = 1;
1333    Opts.AltiVec = 1;
1334    Opts.CXXOperatorNames = 1;
1335    Opts.LaxVectorConversions = 1;
1336    Opts.DefaultFPContract = 1;
1337  }
1338
1339  if (LangStd == LangStandard::lang_cuda)
1340    Opts.CUDA = 1;
1341
1342  // OpenCL and C++ both have bool, true, false keywords.
1343  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1344
1345  Opts.GNUKeywords = Opts.GNUMode;
1346  Opts.CXXOperatorNames = Opts.CPlusPlus;
1347
1348  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1349  // is specified, or -std is set to a conforming mode.
1350  Opts.Trigraphs = !Opts.GNUMode;
1351
1352  Opts.DollarIdents = !Opts.AsmPreprocessor;
1353}
1354
1355static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1356                          Diagnostic &Diags) {
1357  // FIXME: Cleanup per-file based stuff.
1358  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1359  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1360    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1361#define LANGSTANDARD(id, name, desc, features) \
1362      .Case(name, LangStandard::lang_##id)
1363#include "clang/Frontend/LangStandards.def"
1364      .Default(LangStandard::lang_unspecified);
1365    if (LangStd == LangStandard::lang_unspecified)
1366      Diags.Report(diag::err_drv_invalid_value)
1367        << A->getAsString(Args) << A->getValue(Args);
1368  }
1369
1370  if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1371    if (strcmp(A->getValue(Args), "CL1.1") != 0) {
1372      Diags.Report(diag::err_drv_invalid_value)
1373        << A->getAsString(Args) << A->getValue(Args);
1374    }
1375  }
1376
1377  CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1378
1379  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1380  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1381  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1382  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1383  // name, as it doesn't seem a useful distinction.
1384  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1385                                  Opts.GNUKeywords);
1386
1387  if (Args.hasArg(OPT_fno_operator_names))
1388    Opts.CXXOperatorNames = 0;
1389
1390  if (Args.hasArg(OPT_fobjc_gc_only))
1391    Opts.setGCMode(LangOptions::GCOnly);
1392  else if (Args.hasArg(OPT_fobjc_gc))
1393    Opts.setGCMode(LangOptions::HybridGC);
1394
1395  if (Args.hasArg(OPT_fapple_kext)) {
1396    if (!Opts.CPlusPlus)
1397      Diags.Report(diag::warn_c_kext);
1398    else
1399      Opts.AppleKext = 1;
1400  }
1401
1402  if (Args.hasArg(OPT_print_ivar_layout))
1403    Opts.ObjCGCBitmapPrint = 1;
1404  if (Args.hasArg(OPT_fno_constant_cfstrings))
1405    Opts.NoConstantCFStrings = 1;
1406
1407  if (Args.hasArg(OPT_faltivec))
1408    Opts.AltiVec = 1;
1409
1410  if (Args.hasArg(OPT_pthread))
1411    Opts.POSIXThreads = 1;
1412
1413  llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1414  if (Vis == "default")
1415    Opts.setVisibilityMode(DefaultVisibility);
1416  else if (Vis == "hidden")
1417    Opts.setVisibilityMode(HiddenVisibility);
1418  else if (Vis == "protected")
1419    Opts.setVisibilityMode(ProtectedVisibility);
1420  else
1421    Diags.Report(diag::err_drv_invalid_value)
1422      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1423
1424  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1425    Opts.InlineVisibilityHidden = 1;
1426
1427  if (Args.hasArg(OPT_ftrapv)) {
1428    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1429    // Set the handler, if one is specified.
1430    Opts.OverflowHandler =
1431        Args.getLastArgValue(OPT_ftrapv_handler);
1432  }
1433  else if (Args.hasArg(OPT_fwrapv))
1434    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1435
1436  if (Args.hasArg(OPT_trigraphs))
1437    Opts.Trigraphs = 1;
1438
1439  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1440                                   OPT_fno_dollars_in_identifiers,
1441                                   Opts.DollarIdents);
1442  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1443  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1444  Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1445  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1446  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1447  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1448  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1449    Opts.LaxVectorConversions = 0;
1450  if (Args.hasArg(OPT_fno_threadsafe_statics))
1451    Opts.ThreadsafeStatics = 0;
1452  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1453  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1454  Opts.Blocks = Args.hasArg(OPT_fblocks);
1455  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1456  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1457  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1458  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1459  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1460  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1461  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1462  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1463  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1464  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1465  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1466                                               Diags);
1467  Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy,
1468                                                    0, Diags);
1469  Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1470  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1471  Opts.ObjCConstantStringClass =
1472    Args.getLastArgValue(OPT_fconstant_string_class);
1473  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1474  if (Opts.ObjCNonFragileABI)
1475    Opts.ObjCNonFragileABI2 = true;
1476  Opts.ObjCDefaultSynthProperties =
1477    Args.hasArg(OPT_fobjc_default_synthesize_properties);
1478  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1479  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1480  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1481  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1482  Opts.Static = Args.hasArg(OPT_static_define);
1483  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1484  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1485  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1486  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1487  Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1488  Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1489  Opts.OptimizeSize = 0;
1490
1491  // FIXME: Eliminate this dependency.
1492  unsigned Opt = getOptimizationLevel(Args, IK, Diags);
1493  Opts.Optimize = Opt != 0;
1494
1495  // This is the __NO_INLINE__ define, which just depends on things like the
1496  // optimization level and -fno-inline, not actually whether the backend has
1497  // inlining enabled.
1498  //
1499  // FIXME: This is affected by other options (-fno-inline).
1500  Opts.NoInline = !Opt;
1501
1502  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1503  switch (SSP) {
1504  default:
1505    Diags.Report(diag::err_drv_invalid_value)
1506      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1507    break;
1508  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1509  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1510  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1511  }
1512}
1513
1514static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1515                                  FileManager &FileMgr,
1516                                  Diagnostic &Diags) {
1517  using namespace cc1options;
1518  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1519  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1520  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1521      Opts.TokenCache = A->getValue(Args);
1522  else
1523    Opts.TokenCache = Opts.ImplicitPTHInclude;
1524  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1525  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1526  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1527
1528  Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1529  for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1530         ie = Args.filtered_end(); it != ie; ++it) {
1531    const Arg *A = *it;
1532    Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
1533  }
1534
1535  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1536    llvm::StringRef Value(A->getValue(Args));
1537    size_t Comma = Value.find(',');
1538    unsigned Bytes = 0;
1539    unsigned EndOfLine = 0;
1540
1541    if (Comma == llvm::StringRef::npos ||
1542        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1543        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1544      Diags.Report(diag::err_drv_preamble_format);
1545    else {
1546      Opts.PrecompiledPreambleBytes.first = Bytes;
1547      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1548    }
1549  }
1550
1551  // Add macros from the command line.
1552  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1553         ie = Args.filtered_end(); it != ie; ++it) {
1554    if ((*it)->getOption().matches(OPT_D))
1555      Opts.addMacroDef((*it)->getValue(Args));
1556    else
1557      Opts.addMacroUndef((*it)->getValue(Args));
1558  }
1559
1560  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1561
1562  // Add the ordered list of -includes.
1563  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1564                                             OPT_include_pth),
1565         ie = Args.filtered_end(); it != ie; ++it) {
1566    const Arg *A = *it;
1567    // PCH is handled specially, we need to extra the original include path.
1568    if (A->getOption().matches(OPT_include_pch)) {
1569      std::string OriginalFile =
1570        ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
1571      if (OriginalFile.empty())
1572        continue;
1573
1574      Opts.Includes.push_back(OriginalFile);
1575    } else
1576      Opts.Includes.push_back(A->getValue(Args));
1577  }
1578
1579  // Include 'altivec.h' if -faltivec option present
1580  if (Args.hasArg(OPT_faltivec))
1581    Opts.Includes.push_back("altivec.h");
1582
1583  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1584         ie = Args.filtered_end(); it != ie; ++it) {
1585    const Arg *A = *it;
1586    std::pair<llvm::StringRef,llvm::StringRef> Split =
1587      llvm::StringRef(A->getValue(Args)).split(';');
1588
1589    if (Split.second.empty()) {
1590      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1591      continue;
1592    }
1593
1594    Opts.addRemappedFile(Split.first, Split.second);
1595  }
1596}
1597
1598static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1599                                        ArgList &Args) {
1600  using namespace cc1options;
1601  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1602  Opts.ShowComments = Args.hasArg(OPT_C);
1603  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1604  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1605  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1606}
1607
1608static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1609  using namespace cc1options;
1610  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1611  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1612  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1613  Opts.Features = Args.getAllArgValues(OPT_target_feature);
1614  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1615  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1616
1617  // Use the host triple if unspecified.
1618  if (Opts.Triple.empty())
1619    Opts.Triple = llvm::sys::getHostTriple();
1620}
1621
1622//
1623
1624void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1625                                        const char *const *ArgBegin,
1626                                        const char *const *ArgEnd,
1627                                        Diagnostic &Diags) {
1628  // Parse the arguments.
1629  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1630  unsigned MissingArgIndex, MissingArgCount;
1631  llvm::OwningPtr<InputArgList> Args(
1632    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1633
1634  // Check for missing argument error.
1635  if (MissingArgCount)
1636    Diags.Report(diag::err_drv_missing_argument)
1637      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1638
1639  // Issue errors on unknown arguments.
1640  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1641         ie = Args->filtered_end(); it != ie; ++it)
1642    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1643
1644  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1645  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1646  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1647  ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
1648  // FIXME: We shouldn't have to pass the DashX option around here
1649  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1650  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags);
1651  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1652  if (DashX != IK_AST && DashX != IK_LLVM_IR)
1653    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1654  // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
1655  // PCH file and find the original header name. Remove the need to do that in
1656  // ParsePreprocessorArgs and remove the FileManager
1657  // parameters from the function and the "FileManager.h" #include.
1658  FileManager FileMgr(Res.getFileSystemOpts());
1659  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
1660  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1661  ParseTargetArgs(Res.getTargetOpts(), *Args);
1662}
1663