CompilerInvocation.cpp revision bbea7168326d810eff18dfb8bc43c7790fd55010 
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/Driver/Arg.h"
14#include "clang/Driver/ArgList.h"
15#include "clang/Driver/CC1Options.h"
16#include "clang/Driver/DriverDiagnostic.h"
17#include "clang/Driver/OptTable.h"
18#include "clang/Driver/Option.h"
19#include "clang/Frontend/CompilerInvocation.h"
20#include "clang/Frontend/LangStandard.h"
21#include "clang/Frontend/PCHReader.h"
22#include "llvm/ADT/OwningPtr.h"
23#include "llvm/ADT/SmallVector.h"
24#include "llvm/ADT/StringExtras.h"
25#include "llvm/ADT/StringSwitch.h"
26#include "llvm/Support/ErrorHandling.h"
27#include "llvm/System/Host.h"
28#include "llvm/System/Path.h"
29using namespace clang;
30
31static const char *getAnalysisName(Analyses Kind) {
32  switch (Kind) {
33  default:
34    llvm_unreachable("Unknown analysis kind!");
35#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE)\
36  case NAME: return "-" CMDFLAG;
37#include "clang/Frontend/Analyses.def"
38  }
39}
40
41static const char *getAnalysisStoreName(AnalysisStores Kind) {
42  switch (Kind) {
43  default:
44    llvm_unreachable("Unknown analysis store!");
45#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
46  case NAME##Model: return CMDFLAG;
47#include "clang/Frontend/Analyses.def"
48  }
49}
50
51static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
52  switch (Kind) {
53  default:
54    llvm_unreachable("Unknown analysis constraints!");
55#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
56  case NAME##Model: return CMDFLAG;
57#include "clang/Frontend/Analyses.def"
58  }
59}
60
61static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
62  switch (Kind) {
63  default:
64    llvm_unreachable("Unknown analysis client!");
65#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
66  case PD_##NAME: return CMDFLAG;
67#include "clang/Frontend/Analyses.def"
68  }
69}
70
71//===----------------------------------------------------------------------===//
72// Serialization (to args)
73//===----------------------------------------------------------------------===//
74
75static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
76                               std::vector<std::string> &Res) {
77  for (unsigned i = 0, e = Opts.AnalysisList.size(); i != e; ++i)
78    Res.push_back(getAnalysisName(Opts.AnalysisList[i]));
79  if (Opts.AnalysisStoreOpt != BasicStoreModel) {
80    Res.push_back("-analyzer-store");
81    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
82  }
83  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
84    Res.push_back("-analyzer-constraints");
85    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
86  }
87  if (Opts.AnalysisDiagOpt != PD_HTML) {
88    Res.push_back("-analyzer-output");
89    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
90  }
91  if (!Opts.AnalyzeSpecificFunction.empty()) {
92    Res.push_back("-analyze-function");
93    Res.push_back(Opts.AnalyzeSpecificFunction);
94  }
95  if (Opts.AnalyzeAll)
96    Res.push_back("-analyzer-opt-analyze-headers");
97  if (Opts.AnalyzerDisplayProgress)
98    Res.push_back("-analyzer-display-progress");
99  if (Opts.AnalyzeNestedBlocks)
100    Res.push_back("-analyzer-opt-analyze-nested-blocks");
101  if (Opts.EagerlyAssume)
102    Res.push_back("-analyzer-eagerly-assume");
103  if (!Opts.PurgeDead)
104    Res.push_back("-analyzer-no-purge-dead");
105  if (Opts.TrimGraph)
106    Res.push_back("-trim-egraph");
107  if (Opts.VisualizeEGDot)
108    Res.push_back("-analyzer-viz-egraph-graphviz");
109  if (Opts.VisualizeEGDot)
110    Res.push_back("-analyzer-viz-egraph-ubigraph");
111  if (Opts.EnableExperimentalChecks)
112    Res.push_back("-analyzer-experimental-checks");
113  if (Opts.EnableExperimentalInternalChecks)
114    Res.push_back("-analyzer-experimental-internal-checks");
115}
116
117static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
118                              std::vector<std::string> &Res) {
119  if (Opts.DebugInfo)
120    Res.push_back("-g");
121  if (Opts.DisableLLVMOpts)
122    Res.push_back("-disable-llvm-optzns");
123  if (Opts.DisableRedZone)
124    Res.push_back("-disable-red-zone");
125  if (!Opts.DwarfDebugFlags.empty()) {
126    Res.push_back("-dwarf-debug-flags");
127    Res.push_back(Opts.DwarfDebugFlags);
128  }
129  if (!Opts.MergeAllConstants)
130    Res.push_back("-fno-merge-all-constants");
131  if (Opts.NoCommon)
132    Res.push_back("-fno-common");
133  if (Opts.NoImplicitFloat)
134    Res.push_back("-no-implicit-float");
135  if (Opts.OptimizeSize) {
136    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
137    Res.push_back("-Os");
138  } else if (Opts.OptimizationLevel != 0)
139    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
140  if (!Opts.MainFileName.empty()) {
141    Res.push_back("-main-file-name");
142    Res.push_back(Opts.MainFileName);
143  }
144  // SimplifyLibCalls is only derived.
145  // TimePasses is only derived.
146  // UnitAtATime is unused.
147  // UnrollLoops is only derived.
148  // VerifyModule is only derived.
149  // Inlining is only derived.
150
151  if (Opts.DataSections)
152    Res.push_back("-fdata-sections");
153  if (Opts.FunctionSections)
154    Res.push_back("-ffunction-sections");
155  if (Opts.AsmVerbose)
156    Res.push_back("-masm-verbose");
157  if (!Opts.CodeModel.empty()) {
158    Res.push_back("-mcode-model");
159    Res.push_back(Opts.CodeModel);
160  }
161  if (!Opts.CXAAtExit)
162    Res.push_back("-fno-use-cxa-atexit");
163  if (Opts.CXXCtorDtorAliases)
164    Res.push_back("-mconstructor-aliases");
165  if (!Opts.DebugPass.empty()) {
166    Res.push_back("-mdebug-pass");
167    Res.push_back(Opts.DebugPass);
168  }
169  if (Opts.DisableFPElim)
170    Res.push_back("-mdisable-fp-elim");
171  if (!Opts.FloatABI.empty()) {
172    Res.push_back("-mfloat-abi");
173    Res.push_back(Opts.FloatABI);
174  }
175  if (!Opts.LimitFloatPrecision.empty()) {
176    Res.push_back("-mlimit-float-precision");
177    Res.push_back(Opts.LimitFloatPrecision);
178  }
179  if (Opts.NoZeroInitializedInBSS)
180    Res.push_back("-mno-zero-initialized-bss");
181  if (Opts.ObjCLegacyDispatch)
182    Res.push_back("-fobjc-legacy-dispatch");
183  if (Opts.SoftFloat)
184    Res.push_back("-msoft-float");
185  if (Opts.UnwindTables)
186    Res.push_back("-munwind-tables");
187  if (Opts.RelocationModel != "pic") {
188    Res.push_back("-mrelocation-model");
189    Res.push_back(Opts.RelocationModel);
190  }
191  if (!Opts.VerifyModule)
192    Res.push_back("-disable-llvm-verifier");
193}
194
195static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
196                                       std::vector<std::string> &Res) {
197  if (Opts.IncludeSystemHeaders)
198    Res.push_back("-sys-header-deps");
199  if (Opts.UsePhonyTargets)
200    Res.push_back("-MP");
201  if (!Opts.OutputFile.empty()) {
202    Res.push_back("-dependency-file");
203    Res.push_back(Opts.OutputFile);
204  }
205  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
206    Res.push_back("-MT");
207    Res.push_back(Opts.Targets[i]);
208  }
209}
210
211static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
212                                 std::vector<std::string> &Res) {
213  if (Opts.IgnoreWarnings)
214    Res.push_back("-w");
215  if (Opts.NoRewriteMacros)
216    Res.push_back("-Wno-rewrite-macros");
217  if (Opts.Pedantic)
218    Res.push_back("-pedantic");
219  if (Opts.PedanticErrors)
220    Res.push_back("-pedantic-errors");
221  if (!Opts.ShowColumn)
222    Res.push_back("-fno-show-column");
223  if (!Opts.ShowLocation)
224    Res.push_back("-fno-show-source-location");
225  if (!Opts.ShowCarets)
226    Res.push_back("-fno-caret-diagnostics");
227  if (!Opts.ShowFixits)
228    Res.push_back("-fno-diagnostics-fixit-info");
229  if (Opts.ShowSourceRanges)
230    Res.push_back("-fdiagnostics-print-source-range-info");
231  if (Opts.ShowColors)
232    Res.push_back("-fcolor-diagnostics");
233  if (Opts.VerifyDiagnostics)
234    Res.push_back("-verify");
235  if (Opts.BinaryOutput)
236    Res.push_back("-fdiagnostics-binary");
237  if (Opts.ShowOptionNames)
238    Res.push_back("-fdiagnostics-show-option");
239  if (Opts.ErrorLimit) {
240    Res.push_back("-ferror-limit");
241    Res.push_back(llvm::utostr(Opts.ErrorLimit));
242  }
243  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
244    Res.push_back("-ftabstop");
245    Res.push_back(llvm::utostr(Opts.TabStop));
246  }
247  if (Opts.MessageLength) {
248    Res.push_back("-fmessage-length");
249    Res.push_back(llvm::utostr(Opts.MessageLength));
250  }
251  if (!Opts.DumpBuildInformation.empty()) {
252    Res.push_back("-dump-build-information");
253    Res.push_back(Opts.DumpBuildInformation);
254  }
255  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
256    Res.push_back("-W" + Opts.Warnings[i]);
257}
258
259static const char *getInputKindName(FrontendOptions::InputKind Kind) {
260  switch (Kind) {
261  case FrontendOptions::IK_None:              break;
262  case FrontendOptions::IK_AST:               return "ast";
263  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
264  case FrontendOptions::IK_C:                 return "c";
265  case FrontendOptions::IK_CXX:               return "c++";
266  case FrontendOptions::IK_ObjC:              return "objective-c";
267  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
268  case FrontendOptions::IK_OpenCL:            return "cl";
269  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
270  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
271  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
272  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
273  }
274
275  llvm_unreachable("Unexpected language kind!");
276  return 0;
277}
278
279static const char *getActionName(frontend::ActionKind Kind) {
280  switch (Kind) {
281  case frontend::PluginAction:
282  case frontend::InheritanceView:
283    llvm_unreachable("Invalid kind!");
284
285  case frontend::ASTDump:                return "-ast-dump";
286  case frontend::ASTPrint:               return "-ast-print";
287  case frontend::ASTPrintXML:            return "-ast-print-xml";
288  case frontend::ASTView:                return "-ast-view";
289  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
290  case frontend::DumpTokens:             return "-dump-tokens";
291  case frontend::EmitAssembly:           return "-S";
292  case frontend::EmitBC:                 return "-emit-llvm-bc";
293  case frontend::EmitHTML:               return "-emit-html";
294  case frontend::EmitLLVM:               return "-emit-llvm";
295  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
296  case frontend::EmitObj:                return "-emit-obj";
297  case frontend::FixIt:                  return "-fixit";
298  case frontend::GeneratePCH:            return "-emit-pch";
299  case frontend::GeneratePTH:            return "-emit-pth";
300  case frontend::InitOnly:               return "-init-only";
301  case frontend::ParseNoop:              return "-parse-noop";
302  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
303  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
304  case frontend::PrintDeclContext:       return "-print-decl-contexts";
305  case frontend::PrintPreprocessedInput: return "-E";
306  case frontend::RewriteMacros:          return "-rewrite-macros";
307  case frontend::RewriteObjC:            return "-rewrite-objc";
308  case frontend::RewriteTest:            return "-rewrite-test";
309  case frontend::RunAnalysis:            return "-analyze";
310  case frontend::RunPreprocessorOnly:    return "-Eonly";
311  }
312
313  llvm_unreachable("Unexpected language kind!");
314  return 0;
315}
316
317static void FrontendOptsToArgs(const FrontendOptions &Opts,
318                               std::vector<std::string> &Res) {
319  if (!Opts.DebugCodeCompletionPrinter)
320    Res.push_back("-no-code-completion-debug-printer");
321  if (Opts.DisableFree)
322    Res.push_back("-disable-free");
323  if (Opts.RelocatablePCH)
324    Res.push_back("-relocatable-pch");
325  if (Opts.ShowHelp)
326    Res.push_back("-help");
327  if (Opts.ShowMacrosInCodeCompletion)
328    Res.push_back("-code-completion-macros");
329  if (Opts.ShowStats)
330    Res.push_back("-print-stats");
331  if (Opts.ShowTimers)
332    Res.push_back("-ftime-report");
333  if (Opts.ShowVersion)
334    Res.push_back("-version");
335
336  bool NeedLang = false;
337  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
338    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
339        Opts.Inputs[i].first)
340      NeedLang = true;
341  if (NeedLang) {
342    Res.push_back("-x");
343    Res.push_back(getInputKindName(Opts.Inputs[0].first));
344  }
345  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
346    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
347           "Unable to represent this input vector!");
348    Res.push_back(Opts.Inputs[i].second);
349  }
350
351  if (!Opts.OutputFile.empty()) {
352    Res.push_back("-o");
353    Res.push_back(Opts.OutputFile);
354  }
355  if (!Opts.ViewClassInheritance.empty()) {
356    Res.push_back("-cxx-inheritance-view");
357    Res.push_back(Opts.ViewClassInheritance);
358  }
359  for (unsigned i = 0, e = Opts.FixItLocations.size(); i != e; ++i) {
360    Res.push_back("-fixit-at");
361    Res.push_back(Opts.FixItLocations[i].FileName + ":" +
362                  llvm::utostr(Opts.FixItLocations[i].Line) + ":" +
363                  llvm::utostr(Opts.FixItLocations[i].Column));
364  }
365  if (!Opts.CodeCompletionAt.FileName.empty()) {
366    Res.push_back("-code-completion-at");
367    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
368                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
369                  llvm::utostr(Opts.CodeCompletionAt.Column));
370  }
371  if (Opts.ProgramAction != frontend::InheritanceView &&
372      Opts.ProgramAction != frontend::PluginAction)
373    Res.push_back(getActionName(Opts.ProgramAction));
374  if (!Opts.ActionName.empty()) {
375    Res.push_back("-plugin");
376    Res.push_back(Opts.ActionName);
377  }
378  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
379    Res.push_back("-load");
380    Res.push_back(Opts.Plugins[i]);
381  }
382  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
383    Res.push_back("-ast-merge");
384    Res.push_back(Opts.ASTMergeFiles[i]);
385  }
386}
387
388static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
389                                   std::vector<std::string> &Res) {
390  if (Opts.Sysroot != "/") {
391    Res.push_back("-isysroot");
392    Res.push_back(Opts.Sysroot);
393  }
394
395  /// User specified include entries.
396  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
397    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
398    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
399      llvm::report_fatal_error("Invalid option set!");
400    if (E.IsUserSupplied) {
401      if (E.Group == frontend::After) {
402        Res.push_back("-idirafter");
403      } else if (E.Group == frontend::Quoted) {
404        Res.push_back("-iquote");
405      } else if (E.Group == frontend::System) {
406        Res.push_back("-isystem");
407      } else {
408        assert(E.Group == frontend::Angled && "Invalid group!");
409        Res.push_back(E.IsFramework ? "-F" : "-I");
410      }
411    } else {
412      if (E.Group != frontend::Angled && E.Group != frontend::System)
413        llvm::report_fatal_error("Invalid option set!");
414      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
415                    "-iwithprefix");
416    }
417    Res.push_back(E.Path);
418  }
419
420  if (!Opts.EnvIncPath.empty()) {
421    // FIXME: Provide an option for this, and move env detection to driver.
422    llvm::report_fatal_error("Not yet implemented!");
423  }
424  if (!Opts.CEnvIncPath.empty()) {
425    // FIXME: Provide an option for this, and move env detection to driver.
426    llvm::report_fatal_error("Not yet implemented!");
427  }
428  if (!Opts.ObjCEnvIncPath.empty()) {
429    // FIXME: Provide an option for this, and move env detection to driver.
430    llvm::report_fatal_error("Not yet implemented!");
431  }
432  if (!Opts.CXXEnvIncPath.empty()) {
433    // FIXME: Provide an option for this, and move env detection to driver.
434    llvm::report_fatal_error("Not yet implemented!");
435  }
436  if (!Opts.ObjCXXEnvIncPath.empty()) {
437    // FIXME: Provide an option for this, and move env detection to driver.
438    llvm::report_fatal_error("Not yet implemented!");
439  }
440  if (!Opts.ResourceDir.empty()) {
441    Res.push_back("-resource-dir");
442    Res.push_back(Opts.ResourceDir);
443  }
444  if (!Opts.UseStandardIncludes)
445    Res.push_back("-nostdinc");
446  if (!Opts.UseStandardCXXIncludes)
447    Res.push_back("-nostdinc++");
448  if (Opts.Verbose)
449    Res.push_back("-v");
450}
451
452static void LangOptsToArgs(const LangOptions &Opts,
453                           std::vector<std::string> &Res) {
454  LangOptions DefaultLangOpts;
455
456  // FIXME: Need to set -std to get all the implicit options.
457
458  // FIXME: We want to only pass options relative to the defaults, which
459  // requires constructing a target. :(
460  //
461  // It would be better to push the all target specific choices into the driver,
462  // so that everything below that was more uniform.
463
464  if (Opts.Trigraphs)
465    Res.push_back("-trigraphs");
466  // Implicit based on the input kind:
467  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
468  // Implicit based on the input language standard:
469  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
470  if (Opts.DollarIdents)
471    Res.push_back("-fdollars-in-identifiers");
472  if (Opts.Microsoft)
473    Res.push_back("-fms-extensions");
474  if (Opts.ObjCNonFragileABI)
475    Res.push_back("-fobjc-nonfragile-abi");
476  if (Opts.ObjCNonFragileABI2)
477    Res.push_back("-fobjc-nonfragile-abi2");
478  // NoInline is implicit.
479  if (!Opts.CXXOperatorNames)
480    Res.push_back("-fno-operator-names");
481  if (Opts.PascalStrings)
482    Res.push_back("-fpascal-strings");
483  if (Opts.CatchUndefined)
484    Res.push_back("-fcatch-undefined-behavior");
485  if (Opts.WritableStrings)
486    Res.push_back("-fwritable-strings");
487  if (Opts.ConstStrings)
488    Res.push_back("-Wwrite-strings");
489  if (!Opts.LaxVectorConversions)
490    Res.push_back("-fno-lax-vector-conversions");
491  if (Opts.AltiVec)
492    Res.push_back("-faltivec");
493  if (Opts.Exceptions)
494    Res.push_back("-fexceptions");
495  if (Opts.SjLjExceptions)
496    Res.push_back("-fsjlj-exceptions");
497  if (!Opts.RTTI)
498    Res.push_back("-fno-rtti");
499  if (!Opts.NeXTRuntime)
500    Res.push_back("-fgnu-runtime");
501  if (Opts.Freestanding)
502    Res.push_back("-ffreestanding");
503  if (Opts.NoBuiltin)
504    Res.push_back("-fno-builtin");
505  if (!Opts.AssumeSaneOperatorNew)
506    Res.push_back("-fno-assume-sane-operator-new");
507  if (!Opts.ThreadsafeStatics)
508    Res.push_back("-fno-threadsafe-statics");
509  if (Opts.POSIXThreads)
510    Res.push_back("-pthread");
511  if (Opts.Blocks)
512    Res.push_back("-fblocks");
513  if (Opts.EmitAllDecls)
514    Res.push_back("-femit-all-decls");
515  if (Opts.MathErrno)
516    Res.push_back("-fmath-errno");
517  if (Opts.OverflowChecking)
518    Res.push_back("-ftrapv");
519  if (Opts.HeinousExtensions)
520    Res.push_back("-fheinous-gnu-extensions");
521  // Optimize is implicit.
522  // OptimizeSize is implicit.
523  if (Opts.Static)
524    Res.push_back("-static-define");
525  if (Opts.PICLevel) {
526    Res.push_back("-pic-level");
527    Res.push_back(llvm::utostr(Opts.PICLevel));
528  }
529  if (Opts.ObjCGCBitmapPrint)
530    Res.push_back("-print-ivar-layout");
531  if (!Opts.AccessControl)
532    Res.push_back("-fno-access-control");
533  if (!Opts.CharIsSigned)
534    Res.push_back("-fno-signed-char");
535  if (Opts.ShortWChar)
536    Res.push_back("-fshort-wchar");
537  if (!Opts.ElideConstructors)
538    Res.push_back("-fno-elide-constructors");
539  if (Opts.getGCMode() != LangOptions::NonGC) {
540    if (Opts.getGCMode() == LangOptions::HybridGC) {
541      Res.push_back("-fobjc-gc");
542    } else {
543      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
544      Res.push_back("-fobjc-gc-only");
545    }
546  }
547  if (Opts.getVisibilityMode() != LangOptions::Default) {
548    Res.push_back("-fvisibility");
549    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
550      Res.push_back("hidden");
551    } else {
552      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
553             "Invalid visibility!");
554      Res.push_back("protected");
555    }
556  }
557  if (Opts.getStackProtectorMode() != 0) {
558    Res.push_back("-stack-protector");
559    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
560  }
561  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
562    Res.push_back("-ftemplate-depth");
563    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
564  }
565  if (!Opts.ObjCConstantStringClass.empty()) {
566    Res.push_back("-fconstant-string-class");
567    Res.push_back(Opts.ObjCConstantStringClass);
568  }
569}
570
571static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
572                                   std::vector<std::string> &Res) {
573  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
574    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
575                  Opts.Macros[i].first);
576  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
577    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
578    Res.push_back("-include");
579    Res.push_back(Opts.Includes[i]);
580  }
581  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
582    Res.push_back("-imacros");
583    Res.push_back(Opts.MacroIncludes[i]);
584  }
585  if (!Opts.UsePredefines)
586    Res.push_back("-undef");
587  if (Opts.DetailedRecord)
588    Res.push_back("-detailed-preprocessing-record");
589  if (!Opts.ImplicitPCHInclude.empty()) {
590    Res.push_back("-include-pch");
591    Res.push_back(Opts.ImplicitPCHInclude);
592  }
593  if (!Opts.ImplicitPTHInclude.empty()) {
594    Res.push_back("-include-pth");
595    Res.push_back(Opts.ImplicitPTHInclude);
596  }
597  if (!Opts.TokenCache.empty()) {
598    if (Opts.ImplicitPTHInclude.empty()) {
599      Res.push_back("-token-cache");
600      Res.push_back(Opts.TokenCache);
601    } else
602      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
603             "Unsupported option combination!");
604  }
605  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
606    Res.push_back("-remap-file");
607    Res.push_back(Opts.RemappedFiles[i].first + ";" +
608                  Opts.RemappedFiles[i].second);
609  }
610}
611
612static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
613                                         std::vector<std::string> &Res) {
614  if (!Opts.ShowCPP && !Opts.ShowMacros)
615    llvm::report_fatal_error("Invalid option combination!");
616
617  if (Opts.ShowCPP && Opts.ShowMacros)
618    Res.push_back("-dD");
619  else if (!Opts.ShowCPP && Opts.ShowMacros)
620    Res.push_back("-dM");
621
622  if (!Opts.ShowLineMarkers)
623    Res.push_back("-P");
624  if (Opts.ShowComments)
625    Res.push_back("-C");
626  if (Opts.ShowMacroComments)
627    Res.push_back("-CC");
628}
629
630static void TargetOptsToArgs(const TargetOptions &Opts,
631                             std::vector<std::string> &Res) {
632  Res.push_back("-triple");
633  Res.push_back(Opts.Triple);
634  if (!Opts.CPU.empty()) {
635    Res.push_back("-target-cpu");
636    Res.push_back(Opts.CPU);
637  }
638  if (!Opts.ABI.empty()) {
639    Res.push_back("-target-abi");
640    Res.push_back(Opts.ABI);
641  }
642  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
643    Res.push_back("-target-feature");
644    Res.push_back(Opts.Features[i]);
645  }
646}
647
648void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
649  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
650  CodeGenOptsToArgs(getCodeGenOpts(), Res);
651  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
652  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
653  FrontendOptsToArgs(getFrontendOpts(), Res);
654  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
655  LangOptsToArgs(getLangOpts(), Res);
656  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
657  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
658  TargetOptsToArgs(getTargetOpts(), Res);
659}
660
661//===----------------------------------------------------------------------===//
662// Deserialization (to args)
663//===----------------------------------------------------------------------===//
664
665using namespace clang::driver;
666using namespace clang::driver::cc1options;
667
668static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
669                                       llvm::StringRef Default = "") {
670  if (Arg *A = Args.getLastArg(ID))
671    return A->getValue(Args);
672  return Default;
673}
674
675static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
676                              int Default, Diagnostic &Diags) {
677  Arg *A = Args.getLastArg(ID);
678  if (!A)
679    return Default;
680
681  int Res = Default;
682  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
683    Diags.Report(diag::err_drv_invalid_int_value)
684        << A->getAsString(Args) << A->getValue(Args);
685
686  return Res;
687}
688
689static std::vector<std::string>
690getAllArgValues(ArgList &Args, cc1options::ID ID) {
691  llvm::SmallVector<const char *, 16> Values;
692  Args.AddAllArgValues(Values, ID);
693  return std::vector<std::string>(Values.begin(), Values.end());
694}
695
696//
697
698static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
699                              Diagnostic &Diags) {
700  using namespace cc1options;
701
702  Opts.AnalysisList.clear();
703#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
704  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
705#include "clang/Frontend/Analyses.def"
706
707  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
708    llvm::StringRef Name = A->getValue(Args);
709    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
710#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
711      .Case(CMDFLAG, NAME##Model)
712#include "clang/Frontend/Analyses.def"
713      .Default(NumStores);
714    // FIXME: Error handling.
715    if (Value == NumStores)
716      Diags.Report(diag::err_drv_invalid_value)
717        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
718    else
719      Opts.AnalysisStoreOpt = Value;
720  }
721
722  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
723    llvm::StringRef Name = A->getValue(Args);
724    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
725#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
726      .Case(CMDFLAG, NAME##Model)
727#include "clang/Frontend/Analyses.def"
728      .Default(NumConstraints);
729    // FIXME: Error handling.
730    if (Value == NumConstraints)
731      Diags.Report(diag::err_drv_invalid_value)
732        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
733    else
734      Opts.AnalysisConstraintsOpt = Value;
735  }
736
737  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
738    llvm::StringRef Name = A->getValue(Args);
739    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
740#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
741      .Case(CMDFLAG, PD_##NAME)
742#include "clang/Frontend/Analyses.def"
743      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
744    // FIXME: Error handling.
745    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
746      Diags.Report(diag::err_drv_invalid_value)
747        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
748    else
749      Opts.AnalysisDiagOpt = Value;
750  }
751
752  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
753  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
754  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
755  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
756  Opts.AnalyzeNestedBlocks =
757    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
758  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
759  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
760  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
761  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
762  Opts.EnableExperimentalInternalChecks =
763    Args.hasArg(OPT_analyzer_experimental_internal_checks);
764  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
765}
766
767static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
768                             Diagnostic &Diags) {
769  using namespace cc1options;
770  // -Os implies -O2
771  if (Args.hasArg(OPT_Os))
772    Opts.OptimizationLevel = 2;
773  else {
774    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
775    if (Opts.OptimizationLevel > 3) {
776      Diags.Report(diag::err_drv_invalid_value)
777        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
778      Opts.OptimizationLevel = 3;
779    }
780  }
781
782  // We must always run at least the always inlining pass.
783  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
784    : CodeGenOptions::OnlyAlwaysInlining;
785
786  Opts.DebugInfo = Args.hasArg(OPT_g);
787  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
788  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
789  Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
790  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
791  Opts.NoCommon = Args.hasArg(OPT_fno_common);
792  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
793  Opts.OptimizeSize = Args.hasArg(OPT_Os);
794  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
795
796  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
797  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
798  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
799  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
800  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
801  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
802  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
803  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
804  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
805  Opts.ObjCLegacyDispatch = Args.hasArg(OPT_fobjc_legacy_dispatch);
806  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
807  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
808  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
809
810  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
811  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
812
813  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
814  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
815}
816
817static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
818                                      ArgList &Args) {
819  using namespace cc1options;
820  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
821  Opts.Targets = getAllArgValues(Args, OPT_MT);
822  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
823  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
824}
825
826static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
827                                Diagnostic &Diags) {
828  using namespace cc1options;
829  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
830  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
831  Opts.Pedantic = Args.hasArg(OPT_pedantic);
832  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
833  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
834  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
835  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
836  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
837  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
838  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
839  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
840  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
841  Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
842  Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
843  Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
844                                    DiagnosticOptions::DefaultTabStop, Diags);
845  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
846    Diags.Report(diag::warn_ignoring_ftabstop_value)
847      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
848    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
849  }
850  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
851  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
852  Opts.Warnings = getAllArgValues(Args, OPT_W);
853}
854
855static FrontendOptions::InputKind
856ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
857  using namespace cc1options;
858  Opts.ProgramAction = frontend::ParseSyntaxOnly;
859  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
860    switch (A->getOption().getID()) {
861    default:
862      assert(0 && "Invalid option in group!");
863    case OPT_ast_dump:
864      Opts.ProgramAction = frontend::ASTDump; break;
865    case OPT_ast_print:
866      Opts.ProgramAction = frontend::ASTPrint; break;
867    case OPT_ast_print_xml:
868      Opts.ProgramAction = frontend::ASTPrintXML; break;
869    case OPT_ast_view:
870      Opts.ProgramAction = frontend::ASTView; break;
871    case OPT_dump_raw_tokens:
872      Opts.ProgramAction = frontend::DumpRawTokens; break;
873    case OPT_dump_tokens:
874      Opts.ProgramAction = frontend::DumpTokens; break;
875    case OPT_S:
876      Opts.ProgramAction = frontend::EmitAssembly; break;
877    case OPT_emit_llvm_bc:
878      Opts.ProgramAction = frontend::EmitBC; break;
879    case OPT_emit_html:
880      Opts.ProgramAction = frontend::EmitHTML; break;
881    case OPT_emit_llvm:
882      Opts.ProgramAction = frontend::EmitLLVM; break;
883    case OPT_emit_llvm_only:
884      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
885    case OPT_emit_obj:
886      Opts.ProgramAction = frontend::EmitObj; break;
887    case OPT_fixit:
888      Opts.ProgramAction = frontend::FixIt; break;
889    case OPT_emit_pch:
890      Opts.ProgramAction = frontend::GeneratePCH; break;
891    case OPT_emit_pth:
892      Opts.ProgramAction = frontend::GeneratePTH; break;
893    case OPT_init_only:
894      Opts.ProgramAction = frontend::InitOnly; break;
895    case OPT_parse_noop:
896      Opts.ProgramAction = frontend::ParseNoop; break;
897    case OPT_parse_print_callbacks:
898      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
899    case OPT_fsyntax_only:
900      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
901    case OPT_print_decl_contexts:
902      Opts.ProgramAction = frontend::PrintDeclContext; break;
903    case OPT_E:
904      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
905    case OPT_rewrite_macros:
906      Opts.ProgramAction = frontend::RewriteMacros; break;
907    case OPT_rewrite_objc:
908      Opts.ProgramAction = frontend::RewriteObjC; break;
909    case OPT_rewrite_test:
910      Opts.ProgramAction = frontend::RewriteTest; break;
911    case OPT_analyze:
912      Opts.ProgramAction = frontend::RunAnalysis; break;
913    case OPT_Eonly:
914      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
915    }
916  }
917  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
918    Opts.ProgramAction = frontend::PluginAction;
919    Opts.ActionName = A->getValue(Args);
920  }
921
922  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
923    Opts.CodeCompletionAt =
924      ParsedSourceLocation::FromString(A->getValue(Args));
925    if (Opts.CodeCompletionAt.FileName.empty())
926      Diags.Report(diag::err_drv_invalid_value)
927        << A->getAsString(Args) << A->getValue(Args);
928  }
929  Opts.DebugCodeCompletionPrinter =
930    !Args.hasArg(OPT_no_code_completion_debug_printer);
931  Opts.DisableFree = Args.hasArg(OPT_disable_free);
932
933  Opts.FixItLocations.clear();
934  for (arg_iterator it = Args.filtered_begin(OPT_fixit_at),
935         ie = Args.filtered_end(); it != ie; ++it) {
936    const char *Loc = it->getValue(Args);
937    ParsedSourceLocation PSL = ParsedSourceLocation::FromString(Loc);
938
939    if (PSL.FileName.empty()) {
940      Diags.Report(diag::err_drv_invalid_value) << it->getAsString(Args) << Loc;
941      continue;
942    }
943
944    Opts.FixItLocations.push_back(PSL);
945  }
946
947  Opts.OutputFile = getLastArgValue(Args, OPT_o);
948  Opts.Plugins = getAllArgValues(Args, OPT_load);
949  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
950  Opts.ShowHelp = Args.hasArg(OPT_help);
951  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
952  Opts.ShowStats = Args.hasArg(OPT_print_stats);
953  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
954  Opts.ShowVersion = Args.hasArg(OPT_version);
955  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
956  Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
957
958  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
959  if (const Arg *A = Args.getLastArg(OPT_x)) {
960    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
961      .Case("c", FrontendOptions::IK_C)
962      .Case("cl", FrontendOptions::IK_OpenCL)
963      .Case("c", FrontendOptions::IK_C)
964      .Case("cl", FrontendOptions::IK_OpenCL)
965      .Case("c++", FrontendOptions::IK_CXX)
966      .Case("objective-c", FrontendOptions::IK_ObjC)
967      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
968      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
969      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
970      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
971      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
972      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
973      .Case("c-header", FrontendOptions::IK_C)
974      .Case("objective-c-header", FrontendOptions::IK_ObjC)
975      .Case("c++-header", FrontendOptions::IK_CXX)
976      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
977      .Case("ast", FrontendOptions::IK_AST)
978      .Default(FrontendOptions::IK_None);
979    if (DashX == FrontendOptions::IK_None)
980      Diags.Report(diag::err_drv_invalid_value)
981        << A->getAsString(Args) << A->getValue(Args);
982  }
983
984  // '-' is the default input if none is given.
985  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
986  Opts.Inputs.clear();
987  if (Inputs.empty())
988    Inputs.push_back("-");
989  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
990    FrontendOptions::InputKind IK = DashX;
991    if (IK == FrontendOptions::IK_None) {
992      IK = FrontendOptions::getInputKindForExtension(
993        llvm::StringRef(Inputs[i]).rsplit('.').second);
994      // FIXME: Remove this hack.
995      if (i == 0)
996        DashX = IK;
997    }
998    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
999  }
1000
1001  return DashX;
1002}
1003
1004std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1005                                                 void *MainAddr) {
1006  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1007
1008  if (!P.isEmpty()) {
1009    P.eraseComponent();  // Remove /clang from foo/bin/clang
1010    P.eraseComponent();  // Remove /bin   from foo/bin
1011
1012    // Get foo/lib/clang/<version>/include
1013    P.appendComponent("lib");
1014    P.appendComponent("clang");
1015    P.appendComponent(CLANG_VERSION_STRING);
1016  }
1017
1018  return P.str();
1019}
1020
1021static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1022  using namespace cc1options;
1023  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1024  Opts.Verbose = Args.hasArg(OPT_v);
1025  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1026  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1027  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1028  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1029
1030  // Add -I... and -F... options in order.
1031  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1032         ie = Args.filtered_end(); it != ie; ++it)
1033    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1034                 /*IsFramework=*/ it->getOption().matches(OPT_F));
1035
1036  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1037  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1038  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1039                                             OPT_iwithprefixbefore),
1040         ie = Args.filtered_end(); it != ie; ++it) {
1041    if (it->getOption().matches(OPT_iprefix))
1042      Prefix = it->getValue(Args);
1043    else if (it->getOption().matches(OPT_iwithprefix))
1044      Opts.AddPath(Prefix.str() + it->getValue(Args),
1045                   frontend::System, false, false);
1046    else
1047      Opts.AddPath(Prefix.str() + it->getValue(Args),
1048                   frontend::Angled, false, false);
1049  }
1050
1051  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1052         ie = Args.filtered_end(); it != ie; ++it)
1053    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1054  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1055         ie = Args.filtered_end(); it != ie; ++it)
1056    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1057  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1058         ie = Args.filtered_end(); it != ie; ++it)
1059    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1060
1061  // FIXME: Need options for the various environment variables!
1062}
1063
1064static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1065                          FrontendOptions::InputKind IK,
1066                          Diagnostic &Diags) {
1067  // FIXME: Cleanup per-file based stuff.
1068
1069  // Set some properties which depend soley on the input kind; it would be nice
1070  // to move these to the language standard, and have the driver resolve the
1071  // input kind + language standard.
1072  if (IK == FrontendOptions::IK_Asm) {
1073    Opts.AsmPreprocessor = 1;
1074  } else if (IK == FrontendOptions::IK_ObjC ||
1075             IK == FrontendOptions::IK_ObjCXX ||
1076             IK == FrontendOptions::IK_PreprocessedObjC ||
1077             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1078    Opts.ObjC1 = Opts.ObjC2 = 1;
1079  }
1080
1081  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1082  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1083    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1084#define LANGSTANDARD(id, name, desc, features) \
1085      .Case(name, LangStandard::lang_##id)
1086#include "clang/Frontend/LangStandards.def"
1087      .Default(LangStandard::lang_unspecified);
1088    if (LangStd == LangStandard::lang_unspecified)
1089      Diags.Report(diag::err_drv_invalid_value)
1090        << A->getAsString(Args) << A->getValue(Args);
1091  }
1092
1093  if (LangStd == LangStandard::lang_unspecified) {
1094    // Based on the base language, pick one.
1095    switch (IK) {
1096    case FrontendOptions::IK_None:
1097    case FrontendOptions::IK_AST:
1098      assert(0 && "Invalid input kind!");
1099    case FrontendOptions::IK_OpenCL:
1100      LangStd = LangStandard::lang_opencl;
1101      break;
1102    case FrontendOptions::IK_Asm:
1103    case FrontendOptions::IK_C:
1104    case FrontendOptions::IK_PreprocessedC:
1105    case FrontendOptions::IK_ObjC:
1106    case FrontendOptions::IK_PreprocessedObjC:
1107      LangStd = LangStandard::lang_gnu99;
1108      break;
1109    case FrontendOptions::IK_CXX:
1110    case FrontendOptions::IK_PreprocessedCXX:
1111    case FrontendOptions::IK_ObjCXX:
1112    case FrontendOptions::IK_PreprocessedObjCXX:
1113      LangStd = LangStandard::lang_gnucxx98;
1114      break;
1115    }
1116  }
1117
1118  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1119  Opts.BCPLComment = Std.hasBCPLComments();
1120  Opts.C99 = Std.isC99();
1121  Opts.CPlusPlus = Std.isCPlusPlus();
1122  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1123  Opts.Digraphs = Std.hasDigraphs();
1124  Opts.GNUMode = Std.isGNUMode();
1125  Opts.GNUInline = !Std.isC99();
1126  Opts.HexFloats = Std.hasHexFloats();
1127  Opts.ImplicitInt = Std.hasImplicitInt();
1128
1129  // OpenCL has some additional defaults.
1130  if (LangStd == LangStandard::lang_opencl) {
1131    Opts.OpenCL = 1;
1132    Opts.AltiVec = 1;
1133    Opts.CXXOperatorNames = 1;
1134    Opts.LaxVectorConversions = 1;
1135  }
1136
1137  // OpenCL and C++ both have bool, true, false keywords.
1138  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1139
1140  if (Opts.CPlusPlus)
1141    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1142
1143  if (Args.hasArg(OPT_fobjc_gc_only))
1144    Opts.setGCMode(LangOptions::GCOnly);
1145  else if (Args.hasArg(OPT_fobjc_gc))
1146    Opts.setGCMode(LangOptions::HybridGC);
1147
1148  if (Args.hasArg(OPT_print_ivar_layout))
1149    Opts.ObjCGCBitmapPrint = 1;
1150
1151  if (Args.hasArg(OPT_faltivec))
1152    Opts.AltiVec = 1;
1153
1154  if (Args.hasArg(OPT_pthread))
1155    Opts.POSIXThreads = 1;
1156
1157  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1158                                        "default");
1159  if (Vis == "default")
1160    Opts.setVisibilityMode(LangOptions::Default);
1161  else if (Vis == "hidden")
1162    Opts.setVisibilityMode(LangOptions::Hidden);
1163  else if (Vis == "protected")
1164    Opts.setVisibilityMode(LangOptions::Protected);
1165  else
1166    Diags.Report(diag::err_drv_invalid_value)
1167      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1168
1169  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1170
1171  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1172  // is specified, or -std is set to a conforming mode.
1173  Opts.Trigraphs = !Opts.GNUMode;
1174  if (Args.hasArg(OPT_trigraphs))
1175    Opts.Trigraphs = 1;
1176
1177  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1178                                   OPT_fno_dollars_in_identifiers,
1179                                   !Opts.AsmPreprocessor);
1180  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1181  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1182  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1183  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1184  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1185    Opts.LaxVectorConversions = 0;
1186  if (Args.hasArg(OPT_fno_threadsafe_statics))
1187    Opts.ThreadsafeStatics = 0;
1188  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1189  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1190  Opts.Blocks = Args.hasArg(OPT_fblocks);
1191  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1192  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1193  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1194  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1195  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1196  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1197  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1198  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1199  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1200  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 99,
1201                                               Diags);
1202  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1203  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1204                                                 OPT_fconstant_string_class);
1205  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1206  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1207  if (Opts.ObjCNonFragileABI2)
1208    Opts.ObjCNonFragileABI = true;
1209  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1210  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1211  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1212  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1213  Opts.Static = Args.hasArg(OPT_static_define);
1214  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1215  Opts.DumpVtableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1216  Opts.OptimizeSize = 0;
1217
1218  // FIXME: Eliminate this dependency.
1219  unsigned Opt =
1220    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1221  Opts.Optimize = Opt != 0;
1222
1223  // This is the __NO_INLINE__ define, which just depends on things like the
1224  // optimization level and -fno-inline, not actually whether the backend has
1225  // inlining enabled.
1226  //
1227  // FIXME: This is affected by other options (-fno-inline).
1228  Opts.NoInline = !Opt;
1229
1230  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1231  switch (SSP) {
1232  default:
1233    Diags.Report(diag::err_drv_invalid_value)
1234      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1235    break;
1236  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1237  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1238  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1239  }
1240}
1241
1242static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1243                                  Diagnostic &Diags) {
1244  using namespace cc1options;
1245  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1246  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1247  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1248      Opts.TokenCache = A->getValue(Args);
1249  else
1250    Opts.TokenCache = Opts.ImplicitPTHInclude;
1251  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1252  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1253  // Add macros from the command line.
1254  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1255         ie = Args.filtered_end(); it != ie; ++it) {
1256    if (it->getOption().matches(OPT_D))
1257      Opts.addMacroDef(it->getValue(Args));
1258    else
1259      Opts.addMacroUndef(it->getValue(Args));
1260  }
1261
1262  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1263
1264  // Add the ordered list of -includes.
1265  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1266                                             OPT_include_pth),
1267         ie = Args.filtered_end(); it != ie; ++it) {
1268    // PCH is handled specially, we need to extra the original include path.
1269    if (it->getOption().matches(OPT_include_pch)) {
1270      std::string OriginalFile =
1271        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1272      if (OriginalFile.empty())
1273        continue;
1274
1275      Opts.Includes.push_back(OriginalFile);
1276    } else
1277      Opts.Includes.push_back(it->getValue(Args));
1278  }
1279
1280  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1281         ie = Args.filtered_end(); it != ie; ++it) {
1282    std::pair<llvm::StringRef,llvm::StringRef> Split =
1283      llvm::StringRef(it->getValue(Args)).split(';');
1284
1285    if (Split.second.empty()) {
1286      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1287      continue;
1288    }
1289
1290    Opts.addRemappedFile(Split.first, Split.second);
1291  }
1292}
1293
1294static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1295                                        ArgList &Args) {
1296  using namespace cc1options;
1297  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1298  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1299  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1300  Opts.ShowComments = Args.hasArg(OPT_C);
1301  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1302}
1303
1304static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1305  using namespace cc1options;
1306  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1307  Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1308  Opts.Triple = getLastArgValue(Args, OPT_triple);
1309  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1310
1311  // Use the host triple if unspecified.
1312  if (Opts.Triple.empty())
1313    Opts.Triple = llvm::sys::getHostTriple();
1314}
1315
1316//
1317
1318void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1319                                        const char **ArgBegin,
1320                                        const char **ArgEnd,
1321                                        Diagnostic &Diags) {
1322  // Parse the arguments.
1323  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1324  unsigned MissingArgIndex, MissingArgCount;
1325  llvm::OwningPtr<InputArgList> Args(
1326    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1327
1328  // Check for missing argument error.
1329  if (MissingArgCount)
1330    Diags.Report(diag::err_drv_missing_argument)
1331      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1332
1333  // Issue errors on unknown arguments.
1334  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1335         ie = Args->filtered_end(); it != ie; ++it)
1336    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1337
1338  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1339  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1340  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1341  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1342  FrontendOptions::InputKind DashX =
1343    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1344  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1345  if (DashX != FrontendOptions::IK_AST)
1346    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1347  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1348  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1349  ParseTargetArgs(Res.getTargetOpts(), *Args);
1350}
1351