CompilerInvocation.cpp revision 9a2b9d794bdf349b517ff799170f4409f45d147c 
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/Serialization/ASTReader.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/ADT/Triple.h"
27#include "llvm/Support/ErrorHandling.h"
28#include "llvm/System/Host.h"
29#include "llvm/System/Path.h"
30using namespace clang;
31
32static const char *getAnalysisName(Analyses Kind) {
33  switch (Kind) {
34  default:
35    llvm_unreachable("Unknown analysis kind!");
36#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE)\
37  case NAME: return "-" CMDFLAG;
38#include "clang/Frontend/Analyses.def"
39  }
40}
41
42static const char *getAnalysisStoreName(AnalysisStores Kind) {
43  switch (Kind) {
44  default:
45    llvm_unreachable("Unknown analysis store!");
46#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
47  case NAME##Model: return CMDFLAG;
48#include "clang/Frontend/Analyses.def"
49  }
50}
51
52static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
53  switch (Kind) {
54  default:
55    llvm_unreachable("Unknown analysis constraints!");
56#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
57  case NAME##Model: return CMDFLAG;
58#include "clang/Frontend/Analyses.def"
59  }
60}
61
62static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
63  switch (Kind) {
64  default:
65    llvm_unreachable("Unknown analysis client!");
66#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
67  case PD_##NAME: return CMDFLAG;
68#include "clang/Frontend/Analyses.def"
69  }
70}
71
72//===----------------------------------------------------------------------===//
73// Serialization (to args)
74//===----------------------------------------------------------------------===//
75
76static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
77                               std::vector<std::string> &Res) {
78  for (unsigned i = 0, e = Opts.AnalysisList.size(); i != e; ++i)
79    Res.push_back(getAnalysisName(Opts.AnalysisList[i]));
80  if (Opts.AnalysisStoreOpt != BasicStoreModel) {
81    Res.push_back("-analyzer-store");
82    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
83  }
84  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
85    Res.push_back("-analyzer-constraints");
86    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
87  }
88  if (Opts.AnalysisDiagOpt != PD_HTML) {
89    Res.push_back("-analyzer-output");
90    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
91  }
92  if (!Opts.AnalyzeSpecificFunction.empty()) {
93    Res.push_back("-analyze-function");
94    Res.push_back(Opts.AnalyzeSpecificFunction);
95  }
96  if (Opts.AnalyzeAll)
97    Res.push_back("-analyzer-opt-analyze-headers");
98  if (Opts.AnalyzerDisplayProgress)
99    Res.push_back("-analyzer-display-progress");
100  if (Opts.AnalyzeNestedBlocks)
101    Res.push_back("-analyzer-opt-analyze-nested-blocks");
102  if (Opts.AnalyzerStats)
103    Res.push_back("-analyzer-stats");
104  if (Opts.EagerlyAssume)
105    Res.push_back("-analyzer-eagerly-assume");
106  if (!Opts.PurgeDead)
107    Res.push_back("-analyzer-no-purge-dead");
108  if (Opts.TrimGraph)
109    Res.push_back("-trim-egraph");
110  if (Opts.VisualizeEGDot)
111    Res.push_back("-analyzer-viz-egraph-graphviz");
112  if (Opts.VisualizeEGDot)
113    Res.push_back("-analyzer-viz-egraph-ubigraph");
114  if (Opts.EnableExperimentalChecks)
115    Res.push_back("-analyzer-experimental-checks");
116  if (Opts.EnableExperimentalInternalChecks)
117    Res.push_back("-analyzer-experimental-internal-checks");
118  if (Opts.IdempotentOps)
119      Res.push_back("-analyzer-check-idempotent-operations");
120}
121
122static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
123                              std::vector<std::string> &Res) {
124  if (Opts.DebugInfo)
125    Res.push_back("-g");
126  if (Opts.DisableLLVMOpts)
127    Res.push_back("-disable-llvm-optzns");
128  if (Opts.DisableRedZone)
129    Res.push_back("-disable-red-zone");
130  if (!Opts.DwarfDebugFlags.empty()) {
131    Res.push_back("-dwarf-debug-flags");
132    Res.push_back(Opts.DwarfDebugFlags);
133  }
134  if (!Opts.MergeAllConstants)
135    Res.push_back("-fno-merge-all-constants");
136  if (Opts.NoCommon)
137    Res.push_back("-fno-common");
138  if (Opts.NoImplicitFloat)
139    Res.push_back("-no-implicit-float");
140  if (Opts.OmitLeafFramePointer)
141    Res.push_back("-momit-leaf-frame-pointer");
142  if (Opts.OptimizeSize) {
143    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
144    Res.push_back("-Os");
145  } else if (Opts.OptimizationLevel != 0)
146    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
147  if (!Opts.MainFileName.empty()) {
148    Res.push_back("-main-file-name");
149    Res.push_back(Opts.MainFileName);
150  }
151  // SimplifyLibCalls is only derived.
152  // TimePasses is only derived.
153  // UnitAtATime is unused.
154  // Inlining is only derived.
155
156  // UnrollLoops is derived, but also accepts an option, no
157  // harm in pushing it back here.
158  if (Opts.UnrollLoops)
159    Res.push_back("-funroll-loops");
160  if (Opts.DataSections)
161    Res.push_back("-fdata-sections");
162  if (Opts.FunctionSections)
163    Res.push_back("-ffunction-sections");
164  if (Opts.AsmVerbose)
165    Res.push_back("-masm-verbose");
166  if (!Opts.CodeModel.empty()) {
167    Res.push_back("-mcode-model");
168    Res.push_back(Opts.CodeModel);
169  }
170  if (!Opts.CXAAtExit)
171    Res.push_back("-fno-use-cxa-atexit");
172  if (Opts.CXXCtorDtorAliases)
173    Res.push_back("-mconstructor-aliases");
174  if (!Opts.DebugPass.empty()) {
175    Res.push_back("-mdebug-pass");
176    Res.push_back(Opts.DebugPass);
177  }
178  if (Opts.DisableFPElim)
179    Res.push_back("-mdisable-fp-elim");
180  if (!Opts.FloatABI.empty()) {
181    Res.push_back("-mfloat-abi");
182    Res.push_back(Opts.FloatABI);
183  }
184  if (!Opts.LimitFloatPrecision.empty()) {
185    Res.push_back("-mlimit-float-precision");
186    Res.push_back(Opts.LimitFloatPrecision);
187  }
188  if (Opts.NoZeroInitializedInBSS)
189    Res.push_back("-mno-zero-initialized-bss");
190  switch (Opts.getObjCDispatchMethod()) {
191  case CodeGenOptions::Legacy:
192    break;
193  case CodeGenOptions::Mixed:
194    Res.push_back("-fobjc-dispatch-method=mixed");
195    break;
196  case CodeGenOptions::NonLegacy:
197    Res.push_back("-fobjc-dispatch-method=non-legacy");
198    break;
199  }
200  if (Opts.RelaxAll)
201    Res.push_back("-mrelax-all");
202  if (Opts.SoftFloat)
203    Res.push_back("-msoft-float");
204  if (Opts.UnwindTables)
205    Res.push_back("-munwind-tables");
206  if (Opts.RelocationModel != "pic") {
207    Res.push_back("-mrelocation-model");
208    Res.push_back(Opts.RelocationModel);
209  }
210  if (!Opts.VerifyModule)
211    Res.push_back("-disable-llvm-verifier");
212}
213
214static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
215                                       std::vector<std::string> &Res) {
216  if (Opts.IncludeSystemHeaders)
217    Res.push_back("-sys-header-deps");
218  if (Opts.UsePhonyTargets)
219    Res.push_back("-MP");
220  if (!Opts.OutputFile.empty()) {
221    Res.push_back("-dependency-file");
222    Res.push_back(Opts.OutputFile);
223  }
224  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
225    Res.push_back("-MT");
226    Res.push_back(Opts.Targets[i]);
227  }
228}
229
230static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
231                                 std::vector<std::string> &Res) {
232  if (Opts.IgnoreWarnings)
233    Res.push_back("-w");
234  if (Opts.NoRewriteMacros)
235    Res.push_back("-Wno-rewrite-macros");
236  if (Opts.Pedantic)
237    Res.push_back("-pedantic");
238  if (Opts.PedanticErrors)
239    Res.push_back("-pedantic-errors");
240  if (!Opts.ShowColumn)
241    Res.push_back("-fno-show-column");
242  if (!Opts.ShowLocation)
243    Res.push_back("-fno-show-source-location");
244  if (!Opts.ShowCarets)
245    Res.push_back("-fno-caret-diagnostics");
246  if (!Opts.ShowFixits)
247    Res.push_back("-fno-diagnostics-fixit-info");
248  if (Opts.ShowSourceRanges)
249    Res.push_back("-fdiagnostics-print-source-range-info");
250  if (Opts.ShowParseableFixits)
251    Res.push_back("-fdiagnostics-parseable-fixits");
252  if (Opts.ShowColors)
253    Res.push_back("-fcolor-diagnostics");
254  if (Opts.VerifyDiagnostics)
255    Res.push_back("-verify");
256  if (Opts.BinaryOutput)
257    Res.push_back("-fdiagnostics-binary");
258  if (Opts.ShowOptionNames)
259    Res.push_back("-fdiagnostics-show-option");
260  if (Opts.ShowCategories == 1)
261    Res.push_back("-fdiagnostics-show-category=id");
262  else if (Opts.ShowCategories == 2)
263    Res.push_back("-fdiagnostics-show-category=name");
264  if (Opts.ErrorLimit) {
265    Res.push_back("-ferror-limit");
266    Res.push_back(llvm::utostr(Opts.ErrorLimit));
267  }
268  if (Opts.MacroBacktraceLimit
269                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
270    Res.push_back("-fmacro-backtrace-limit");
271    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
272  }
273  if (Opts.TemplateBacktraceLimit
274                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
275    Res.push_back("-ftemplate-backtrace-limit");
276    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
277  }
278
279  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
280    Res.push_back("-ftabstop");
281    Res.push_back(llvm::utostr(Opts.TabStop));
282  }
283  if (Opts.MessageLength) {
284    Res.push_back("-fmessage-length");
285    Res.push_back(llvm::utostr(Opts.MessageLength));
286  }
287  if (!Opts.DumpBuildInformation.empty()) {
288    Res.push_back("-dump-build-information");
289    Res.push_back(Opts.DumpBuildInformation);
290  }
291  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
292    Res.push_back("-W" + Opts.Warnings[i]);
293}
294
295static const char *getInputKindName(InputKind Kind) {
296  switch (Kind) {
297  case IK_None:              break;
298  case IK_AST:               return "ast";
299  case IK_Asm:               return "assembler-with-cpp";
300  case IK_C:                 return "c";
301  case IK_CXX:               return "c++";
302  case IK_LLVM_IR:           return "ir";
303  case IK_ObjC:              return "objective-c";
304  case IK_ObjCXX:            return "objective-c++";
305  case IK_OpenCL:            return "cl";
306  case IK_PreprocessedC:     return "cpp-output";
307  case IK_PreprocessedCXX:   return "c++-cpp-output";
308  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
309  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
310  }
311
312  llvm_unreachable("Unexpected language kind!");
313  return 0;
314}
315
316static const char *getActionName(frontend::ActionKind Kind) {
317  switch (Kind) {
318  case frontend::PluginAction:
319  case frontend::InheritanceView:
320    llvm_unreachable("Invalid kind!");
321
322  case frontend::ASTDump:                return "-ast-dump";
323  case frontend::ASTPrint:               return "-ast-print";
324  case frontend::ASTPrintXML:            return "-ast-print-xml";
325  case frontend::ASTView:                return "-ast-view";
326  case frontend::BoostCon:               return "-boostcon";
327  case frontend::CreateModule:           return "-create-module";
328  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
329  case frontend::DumpTokens:             return "-dump-tokens";
330  case frontend::EmitAssembly:           return "-S";
331  case frontend::EmitBC:                 return "-emit-llvm-bc";
332  case frontend::EmitHTML:               return "-emit-html";
333  case frontend::EmitLLVM:               return "-emit-llvm";
334  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
335  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
336  case frontend::EmitObj:                return "-emit-obj";
337  case frontend::FixIt:                  return "-fixit";
338  case frontend::GeneratePCH:            return "-emit-pch";
339  case frontend::GeneratePTH:            return "-emit-pth";
340  case frontend::InitOnly:               return "-init-only";
341  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
342  case frontend::PrintDeclContext:       return "-print-decl-contexts";
343  case frontend::PrintPreamble:          return "-print-preamble";
344  case frontend::PrintPreprocessedInput: return "-E";
345  case frontend::RewriteMacros:          return "-rewrite-macros";
346  case frontend::RewriteObjC:            return "-rewrite-objc";
347  case frontend::RewriteTest:            return "-rewrite-test";
348  case frontend::RunAnalysis:            return "-analyze";
349  case frontend::RunPreprocessorOnly:    return "-Eonly";
350  }
351
352  llvm_unreachable("Unexpected language kind!");
353  return 0;
354}
355
356static void FrontendOptsToArgs(const FrontendOptions &Opts,
357                               std::vector<std::string> &Res) {
358  if (!Opts.DebugCodeCompletionPrinter)
359    Res.push_back("-no-code-completion-debug-printer");
360  if (Opts.DisableFree)
361    Res.push_back("-disable-free");
362  if (Opts.RelocatablePCH)
363    Res.push_back("-relocatable-pch");
364  if (Opts.ChainedPCH)
365    Res.push_back("-chained-pch");
366  if (Opts.ShowHelp)
367    Res.push_back("-help");
368  if (Opts.ShowMacrosInCodeCompletion)
369    Res.push_back("-code-completion-macros");
370  if (Opts.ShowCodePatternsInCodeCompletion)
371    Res.push_back("-code-completion-patterns");
372  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
373    Res.push_back("-no-code-completion-globals");
374  if (Opts.ShowStats)
375    Res.push_back("-print-stats");
376  if (Opts.ShowTimers)
377    Res.push_back("-ftime-report");
378  if (Opts.ShowVersion)
379    Res.push_back("-version");
380  if (Opts.FixWhatYouCan)
381    Res.push_back("-fix-what-you-can");
382
383  bool NeedLang = false;
384  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
385    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
386        Opts.Inputs[i].first)
387      NeedLang = true;
388  if (NeedLang) {
389    Res.push_back("-x");
390    Res.push_back(getInputKindName(Opts.Inputs[0].first));
391  }
392  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
393    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
394           "Unable to represent this input vector!");
395    Res.push_back(Opts.Inputs[i].second);
396  }
397
398  if (!Opts.OutputFile.empty()) {
399    Res.push_back("-o");
400    Res.push_back(Opts.OutputFile);
401  }
402  if (!Opts.ViewClassInheritance.empty()) {
403    Res.push_back("-cxx-inheritance-view");
404    Res.push_back(Opts.ViewClassInheritance);
405  }
406  if (!Opts.CodeCompletionAt.FileName.empty()) {
407    Res.push_back("-code-completion-at");
408    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
409                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
410                  llvm::utostr(Opts.CodeCompletionAt.Column));
411  }
412  if (Opts.ProgramAction != frontend::InheritanceView &&
413      Opts.ProgramAction != frontend::PluginAction)
414    Res.push_back(getActionName(Opts.ProgramAction));
415  if (!Opts.ActionName.empty()) {
416    Res.push_back("-plugin");
417    Res.push_back(Opts.ActionName);
418    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
419      Res.push_back("-plugin-arg-" + Opts.ActionName);
420      Res.push_back(Opts.PluginArgs[i]);
421    }
422  }
423  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
424    Res.push_back("-load");
425    Res.push_back(Opts.Plugins[i]);
426  }
427  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
428    Res.push_back("-ast-merge");
429    Res.push_back(Opts.ASTMergeFiles[i]);
430  }
431  for (unsigned i = 0, e = Opts.Modules.size(); i != e; ++i) {
432    Res.push_back("-import-module");
433    Res.push_back(Opts.Modules[i]);
434  }
435  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
436    Res.push_back("-mllvm");
437    Res.push_back(Opts.LLVMArgs[i]);
438  }
439}
440
441static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
442                                   std::vector<std::string> &Res) {
443  if (Opts.Sysroot != "/") {
444    Res.push_back("-isysroot");
445    Res.push_back(Opts.Sysroot);
446  }
447
448  for (unsigned i = 0, e = Opts.CXXSystemIncludes.size(); i != e; ++i) {
449    Res.push_back("-cxx-system-include");
450    Res.push_back(Opts.CXXSystemIncludes[i]);
451  }
452
453  /// User specified include entries.
454  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
455    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
456    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
457      llvm::report_fatal_error("Invalid option set!");
458    if (E.IsUserSupplied) {
459      if (E.Group == frontend::After) {
460        Res.push_back("-idirafter");
461      } else if (E.Group == frontend::Quoted) {
462        Res.push_back("-iquote");
463      } else if (E.Group == frontend::System) {
464        Res.push_back("-isystem");
465      } else {
466        assert(E.Group == frontend::Angled && "Invalid group!");
467        Res.push_back(E.IsFramework ? "-F" : "-I");
468      }
469    } else {
470      if (E.Group != frontend::Angled && E.Group != frontend::System)
471        llvm::report_fatal_error("Invalid option set!");
472      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
473                    "-iwithprefix");
474    }
475    Res.push_back(E.Path);
476  }
477
478  if (!Opts.EnvIncPath.empty()) {
479    // FIXME: Provide an option for this, and move env detection to driver.
480    llvm::report_fatal_error("Not yet implemented!");
481  }
482  if (!Opts.CEnvIncPath.empty()) {
483    // FIXME: Provide an option for this, and move env detection to driver.
484    llvm::report_fatal_error("Not yet implemented!");
485  }
486  if (!Opts.ObjCEnvIncPath.empty()) {
487    // FIXME: Provide an option for this, and move env detection to driver.
488    llvm::report_fatal_error("Not yet implemented!");
489  }
490  if (!Opts.CXXEnvIncPath.empty()) {
491    // FIXME: Provide an option for this, and move env detection to driver.
492    llvm::report_fatal_error("Not yet implemented!");
493  }
494  if (!Opts.ObjCXXEnvIncPath.empty()) {
495    // FIXME: Provide an option for this, and move env detection to driver.
496    llvm::report_fatal_error("Not yet implemented!");
497  }
498  if (!Opts.ResourceDir.empty()) {
499    Res.push_back("-resource-dir");
500    Res.push_back(Opts.ResourceDir);
501  }
502  if (!Opts.UseStandardIncludes)
503    Res.push_back("-nostdinc");
504  if (!Opts.UseStandardCXXIncludes)
505    Res.push_back("-nostdinc++");
506  if (Opts.Verbose)
507    Res.push_back("-v");
508}
509
510static void LangOptsToArgs(const LangOptions &Opts,
511                           std::vector<std::string> &Res) {
512  LangOptions DefaultLangOpts;
513
514  // FIXME: Need to set -std to get all the implicit options.
515
516  // FIXME: We want to only pass options relative to the defaults, which
517  // requires constructing a target. :(
518  //
519  // It would be better to push the all target specific choices into the driver,
520  // so that everything below that was more uniform.
521
522  if (Opts.Trigraphs)
523    Res.push_back("-trigraphs");
524  // Implicit based on the input kind:
525  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
526  // Implicit based on the input language standard:
527  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
528  if (Opts.DollarIdents)
529    Res.push_back("-fdollars-in-identifiers");
530  if (Opts.GNUMode && !Opts.GNUKeywords)
531    Res.push_back("-fno-gnu-keywords");
532  if (!Opts.GNUMode && Opts.GNUKeywords)
533    Res.push_back("-fgnu-keywords");
534  if (Opts.Microsoft)
535    Res.push_back("-fms-extensions");
536  if (Opts.Borland)
537    Res.push_back("-fborland-extensions");
538  if (Opts.ObjCNonFragileABI)
539    Res.push_back("-fobjc-nonfragile-abi");
540  if (Opts.ObjCNonFragileABI2)
541    Res.push_back("-fobjc-nonfragile-abi2");
542  // NoInline is implicit.
543  if (!Opts.CXXOperatorNames)
544    Res.push_back("-fno-operator-names");
545  if (Opts.PascalStrings)
546    Res.push_back("-fpascal-strings");
547  if (Opts.CatchUndefined)
548    Res.push_back("-fcatch-undefined-behavior");
549  if (Opts.WritableStrings)
550    Res.push_back("-fwritable-strings");
551  if (Opts.ConstStrings)
552    Res.push_back("-Wwrite-strings");
553  if (!Opts.LaxVectorConversions)
554    Res.push_back("-fno-lax-vector-conversions");
555  if (Opts.AltiVec)
556    Res.push_back("-faltivec");
557  if (Opts.Exceptions)
558    Res.push_back("-fexceptions");
559  if (Opts.SjLjExceptions)
560    Res.push_back("-fsjlj-exceptions");
561  if (!Opts.RTTI)
562    Res.push_back("-fno-rtti");
563  if (!Opts.NeXTRuntime)
564    Res.push_back("-fgnu-runtime");
565  if (Opts.Freestanding)
566    Res.push_back("-ffreestanding");
567  if (Opts.NoBuiltin)
568    Res.push_back("-fno-builtin");
569  if (!Opts.AssumeSaneOperatorNew)
570    Res.push_back("-fno-assume-sane-operator-new");
571  if (!Opts.ThreadsafeStatics)
572    Res.push_back("-fno-threadsafe-statics");
573  if (Opts.POSIXThreads)
574    Res.push_back("-pthread");
575  if (Opts.Blocks)
576    Res.push_back("-fblocks");
577  if (Opts.EmitAllDecls)
578    Res.push_back("-femit-all-decls");
579  if (Opts.MathErrno)
580    Res.push_back("-fmath-errno");
581  switch (Opts.getSignedOverflowBehavior()) {
582  case LangOptions::SOB_Undefined: break;
583  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
584  case LangOptions::SOB_Trapping:
585    Res.push_back("-ftrapv"); break;
586    if (!Opts.OverflowHandler.empty()) {
587      Res.push_back("-ftrapv-handler");
588      Res.push_back(Opts.OverflowHandler);
589    }
590  }
591  if (Opts.HeinousExtensions)
592    Res.push_back("-fheinous-gnu-extensions");
593  // Optimize is implicit.
594  // OptimizeSize is implicit.
595  if (Opts.Static)
596    Res.push_back("-static-define");
597  if (Opts.DumpRecordLayouts)
598    Res.push_back("-fdump-record-layouts");
599  if (Opts.DumpVTableLayouts)
600    Res.push_back("-fdump-vtable-layouts");
601  if (Opts.NoBitFieldTypeAlign)
602    Res.push_back("-fno-bitfield-type-alignment");
603  if (Opts.SjLjExceptions)
604    Res.push_back("-fsjlj-exceptions");
605  if (Opts.PICLevel) {
606    Res.push_back("-pic-level");
607    Res.push_back(llvm::utostr(Opts.PICLevel));
608  }
609  if (Opts.ObjCGCBitmapPrint)
610    Res.push_back("-print-ivar-layout");
611  if (Opts.NoConstantCFStrings)
612    Res.push_back("-fno-constant-cfstrings");
613  if (!Opts.AccessControl)
614    Res.push_back("-fno-access-control");
615  if (!Opts.CharIsSigned)
616    Res.push_back("-fno-signed-char");
617  if (Opts.ShortWChar)
618    Res.push_back("-fshort-wchar");
619  if (!Opts.ElideConstructors)
620    Res.push_back("-fno-elide-constructors");
621  if (Opts.getGCMode() != LangOptions::NonGC) {
622    if (Opts.getGCMode() == LangOptions::HybridGC) {
623      Res.push_back("-fobjc-gc");
624    } else {
625      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
626      Res.push_back("-fobjc-gc-only");
627    }
628  }
629  if (Opts.getVisibilityMode() != LangOptions::Default) {
630    Res.push_back("-fvisibility");
631    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
632      Res.push_back("hidden");
633    } else {
634      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
635             "Invalid visibility!");
636      Res.push_back("protected");
637    }
638  }
639  if (Opts.InlineVisibilityHidden)
640    Res.push_back("-fvisibility-inlines-hidden");
641
642  if (Opts.getStackProtectorMode() != 0) {
643    Res.push_back("-stack-protector");
644    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
645  }
646  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
647    Res.push_back("-ftemplate-depth");
648    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
649  }
650  if (!Opts.ObjCConstantStringClass.empty()) {
651    Res.push_back("-fconstant-string-class");
652    Res.push_back(Opts.ObjCConstantStringClass);
653  }
654}
655
656static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
657                                   std::vector<std::string> &Res) {
658  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
659    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
660                  Opts.Macros[i].first);
661  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
662    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
663    Res.push_back("-include");
664    Res.push_back(Opts.Includes[i]);
665  }
666  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
667    Res.push_back("-imacros");
668    Res.push_back(Opts.MacroIncludes[i]);
669  }
670  if (!Opts.UsePredefines)
671    Res.push_back("-undef");
672  if (Opts.DetailedRecord)
673    Res.push_back("-detailed-preprocessing-record");
674  if (!Opts.ImplicitPCHInclude.empty()) {
675    Res.push_back("-include-pch");
676    Res.push_back(Opts.ImplicitPCHInclude);
677  }
678  if (!Opts.ImplicitPTHInclude.empty()) {
679    Res.push_back("-include-pth");
680    Res.push_back(Opts.ImplicitPTHInclude);
681  }
682  if (!Opts.TokenCache.empty()) {
683    if (Opts.ImplicitPTHInclude.empty()) {
684      Res.push_back("-token-cache");
685      Res.push_back(Opts.TokenCache);
686    } else
687      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
688             "Unsupported option combination!");
689  }
690  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
691    Res.push_back("-remap-file");
692    Res.push_back(Opts.RemappedFiles[i].first + ";" +
693                  Opts.RemappedFiles[i].second);
694  }
695}
696
697static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
698                                         std::vector<std::string> &Res) {
699  if (!Opts.ShowCPP && !Opts.ShowMacros)
700    llvm::report_fatal_error("Invalid option combination!");
701
702  if (Opts.ShowCPP && Opts.ShowMacros)
703    Res.push_back("-dD");
704  else if (!Opts.ShowCPP && Opts.ShowMacros)
705    Res.push_back("-dM");
706
707  if (Opts.ShowHeaderIncludes)
708    Res.push_back("-H");
709  if (!Opts.ShowLineMarkers)
710    Res.push_back("-P");
711  if (Opts.ShowComments)
712    Res.push_back("-C");
713  if (Opts.ShowMacroComments)
714    Res.push_back("-CC");
715}
716
717static void TargetOptsToArgs(const TargetOptions &Opts,
718                             std::vector<std::string> &Res) {
719  Res.push_back("-triple");
720  Res.push_back(Opts.Triple);
721  if (!Opts.CPU.empty()) {
722    Res.push_back("-target-cpu");
723    Res.push_back(Opts.CPU);
724  }
725  if (!Opts.ABI.empty()) {
726    Res.push_back("-target-abi");
727    Res.push_back(Opts.ABI);
728  }
729  if (!Opts.LinkerVersion.empty()) {
730    Res.push_back("-target-linker-version");
731    Res.push_back(Opts.LinkerVersion);
732  }
733  if (!Opts.CXXABI.empty()) {
734    Res.push_back("-cxx-abi");
735    Res.push_back(Opts.CXXABI);
736  }
737  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
738    Res.push_back("-target-feature");
739    Res.push_back(Opts.Features[i]);
740  }
741}
742
743void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
744  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
745  CodeGenOptsToArgs(getCodeGenOpts(), Res);
746  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
747  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
748  FrontendOptsToArgs(getFrontendOpts(), Res);
749  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
750  LangOptsToArgs(getLangOpts(), Res);
751  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
752  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
753  TargetOptsToArgs(getTargetOpts(), Res);
754}
755
756//===----------------------------------------------------------------------===//
757// Deserialization (to args)
758//===----------------------------------------------------------------------===//
759
760using namespace clang::driver;
761using namespace clang::driver::cc1options;
762
763//
764
765static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
766                              Diagnostic &Diags) {
767  using namespace cc1options;
768
769  Opts.AnalysisList.clear();
770#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
771  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
772#include "clang/Frontend/Analyses.def"
773
774  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
775    llvm::StringRef Name = A->getValue(Args);
776    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
777#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
778      .Case(CMDFLAG, NAME##Model)
779#include "clang/Frontend/Analyses.def"
780      .Default(NumStores);
781    // FIXME: Error handling.
782    if (Value == NumStores)
783      Diags.Report(diag::err_drv_invalid_value)
784        << A->getAsString(Args) << Name;
785    else
786      Opts.AnalysisStoreOpt = Value;
787  }
788
789  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
790    llvm::StringRef Name = A->getValue(Args);
791    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
792#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
793      .Case(CMDFLAG, NAME##Model)
794#include "clang/Frontend/Analyses.def"
795      .Default(NumConstraints);
796    // FIXME: Error handling.
797    if (Value == NumConstraints)
798      Diags.Report(diag::err_drv_invalid_value)
799        << A->getAsString(Args) << Name;
800    else
801      Opts.AnalysisConstraintsOpt = Value;
802  }
803
804  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
805    llvm::StringRef Name = A->getValue(Args);
806    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
807#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
808      .Case(CMDFLAG, PD_##NAME)
809#include "clang/Frontend/Analyses.def"
810      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
811    // FIXME: Error handling.
812    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
813      Diags.Report(diag::err_drv_invalid_value)
814        << A->getAsString(Args) << Name;
815    else
816      Opts.AnalysisDiagOpt = Value;
817  }
818
819  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
820  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
821  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
822  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
823  Opts.AnalyzeNestedBlocks =
824    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
825  Opts.AnalyzerStats = Args.hasArg(OPT_analysis_AnalyzerStats);
826  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
827  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
828  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
829  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
830  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
831  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
832  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
833  Opts.EnableExperimentalInternalChecks =
834    Args.hasArg(OPT_analyzer_experimental_internal_checks);
835  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
836  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
837  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 3, Diags);
838  Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
839  Opts.IdempotentOps = Args.hasArg(OPT_analysis_WarnIdempotentOps);
840}
841
842static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
843                             Diagnostic &Diags) {
844  using namespace cc1options;
845  // -Os implies -O2
846  if (Args.hasArg(OPT_Os))
847    Opts.OptimizationLevel = 2;
848  else {
849    Opts.OptimizationLevel = Args.getLastArgIntValue(OPT_O, 0, Diags);
850    if (Opts.OptimizationLevel > 3) {
851      Diags.Report(diag::err_drv_invalid_value)
852        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
853      Opts.OptimizationLevel = 3;
854    }
855  }
856
857  // We must always run at least the always inlining pass.
858  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
859    : CodeGenOptions::OnlyAlwaysInlining;
860
861  Opts.DebugInfo = Args.hasArg(OPT_g);
862  Opts.LimitDebugInfo = Args.hasArg(OPT_flimit_debug_info);
863  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
864  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
865  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
866  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
867  Opts.NoCommon = Args.hasArg(OPT_fno_common);
868  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
869  Opts.OptimizeSize = Args.hasArg(OPT_Os);
870  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
871                            Args.hasArg(OPT_ffreestanding));
872  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
873                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
874
875  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
876  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
877  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
878  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
879  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
880  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
881  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
882  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
883  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
884  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
885  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
886  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
887  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
888  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
889  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
890
891  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
892  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
893
894  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
895  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
896
897  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
898
899  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
900    llvm::StringRef Name = A->getValue(Args);
901    unsigned Method = llvm::StringSwitch<unsigned>(Name)
902      .Case("legacy", CodeGenOptions::Legacy)
903      .Case("non-legacy", CodeGenOptions::NonLegacy)
904      .Case("mixed", CodeGenOptions::Mixed)
905      .Default(~0U);
906    if (Method == ~0U)
907      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
908    else
909      Opts.ObjCDispatchMethod = Method;
910  }
911}
912
913static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
914                                      ArgList &Args) {
915  using namespace cc1options;
916  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
917  Opts.Targets = Args.getAllArgValues(OPT_MT);
918  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
919  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
920}
921
922static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
923                                Diagnostic &Diags) {
924  using namespace cc1options;
925  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
926  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
927  Opts.Pedantic = Args.hasArg(OPT_pedantic);
928  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
929  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
930  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
931  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
932  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
933  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
934  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
935
936  llvm::StringRef ShowOverloads =
937    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
938  if (ShowOverloads == "best")
939    Opts.ShowOverloads = Diagnostic::Ovl_Best;
940  else if (ShowOverloads == "all")
941    Opts.ShowOverloads = Diagnostic::Ovl_All;
942  else
943    Diags.Report(diag::err_drv_invalid_value)
944      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
945      << ShowOverloads;
946
947  llvm::StringRef ShowCategory =
948    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
949  if (ShowCategory == "none")
950    Opts.ShowCategories = 0;
951  else if (ShowCategory == "id")
952    Opts.ShowCategories = 1;
953  else if (ShowCategory == "name")
954    Opts.ShowCategories = 2;
955  else
956    Diags.Report(diag::err_drv_invalid_value)
957      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
958      << ShowCategory;
959
960  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
961  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
962  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
963  Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
964  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
965  Opts.MacroBacktraceLimit
966    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
967                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
968  Opts.TemplateBacktraceLimit
969    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
970                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
971                         Diags);
972  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
973                                    DiagnosticOptions::DefaultTabStop, Diags);
974  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
975    Diags.Report(diag::warn_ignoring_ftabstop_value)
976      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
977    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
978  }
979  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
980  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
981  Opts.Warnings = Args.getAllArgValues(OPT_W);
982}
983
984static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
985                                   Diagnostic &Diags) {
986  using namespace cc1options;
987  Opts.ProgramAction = frontend::ParseSyntaxOnly;
988  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
989    switch (A->getOption().getID()) {
990    default:
991      assert(0 && "Invalid option in group!");
992    case OPT_ast_dump:
993      Opts.ProgramAction = frontend::ASTDump; break;
994    case OPT_ast_print:
995      Opts.ProgramAction = frontend::ASTPrint; break;
996    case OPT_ast_print_xml:
997      Opts.ProgramAction = frontend::ASTPrintXML; break;
998    case OPT_ast_view:
999      Opts.ProgramAction = frontend::ASTView; break;
1000    case OPT_boostcon:
1001      Opts.ProgramAction = frontend::BoostCon; break;
1002    case OPT_dump_raw_tokens:
1003      Opts.ProgramAction = frontend::DumpRawTokens; break;
1004    case OPT_dump_tokens:
1005      Opts.ProgramAction = frontend::DumpTokens; break;
1006    case OPT_S:
1007      Opts.ProgramAction = frontend::EmitAssembly; break;
1008    case OPT_emit_llvm_bc:
1009      Opts.ProgramAction = frontend::EmitBC; break;
1010    case OPT_emit_html:
1011      Opts.ProgramAction = frontend::EmitHTML; break;
1012    case OPT_emit_llvm:
1013      Opts.ProgramAction = frontend::EmitLLVM; break;
1014    case OPT_emit_llvm_only:
1015      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1016    case OPT_emit_codegen_only:
1017      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1018    case OPT_emit_obj:
1019      Opts.ProgramAction = frontend::EmitObj; break;
1020    case OPT_fixit_EQ:
1021      Opts.FixItSuffix = A->getValue(Args);
1022      // fall-through!
1023    case OPT_fixit:
1024      Opts.ProgramAction = frontend::FixIt; break;
1025    case OPT_emit_pch:
1026      Opts.ProgramAction = frontend::GeneratePCH; break;
1027    case OPT_emit_pth:
1028      Opts.ProgramAction = frontend::GeneratePTH; break;
1029    case OPT_init_only:
1030      Opts.ProgramAction = frontend::InitOnly; break;
1031    case OPT_fsyntax_only:
1032      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1033    case OPT_print_decl_contexts:
1034      Opts.ProgramAction = frontend::PrintDeclContext; break;
1035    case OPT_print_preamble:
1036      Opts.ProgramAction = frontend::PrintPreamble; break;
1037    case OPT_E:
1038      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1039    case OPT_rewrite_macros:
1040      Opts.ProgramAction = frontend::RewriteMacros; break;
1041    case OPT_rewrite_objc:
1042      Opts.ProgramAction = frontend::RewriteObjC; break;
1043    case OPT_rewrite_test:
1044      Opts.ProgramAction = frontend::RewriteTest; break;
1045    case OPT_analyze:
1046      Opts.ProgramAction = frontend::RunAnalysis; break;
1047    case OPT_Eonly:
1048      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1049    case OPT_create_module:
1050      Opts.ProgramAction = frontend::CreateModule; break;
1051    }
1052  }
1053
1054  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1055    Opts.Plugins.push_back(A->getValue(Args,0));
1056    Opts.ProgramAction = frontend::PluginAction;
1057    Opts.ActionName = A->getValue(Args);
1058
1059    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1060           end = Args.filtered_end(); it != end; ++it) {
1061      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1062        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1063    }
1064  }
1065
1066  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1067    Opts.CodeCompletionAt =
1068      ParsedSourceLocation::FromString(A->getValue(Args));
1069    if (Opts.CodeCompletionAt.FileName.empty())
1070      Diags.Report(diag::err_drv_invalid_value)
1071        << A->getAsString(Args) << A->getValue(Args);
1072  }
1073  Opts.DebugCodeCompletionPrinter =
1074    !Args.hasArg(OPT_no_code_completion_debug_printer);
1075  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1076
1077  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1078  Opts.Plugins = Args.getAllArgValues(OPT_load);
1079  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1080  Opts.ChainedPCH = Args.hasArg(OPT_chained_pch);
1081  Opts.ShowHelp = Args.hasArg(OPT_help);
1082  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1083  Opts.ShowCodePatternsInCodeCompletion
1084    = Args.hasArg(OPT_code_completion_patterns);
1085  Opts.ShowGlobalSymbolsInCodeCompletion
1086    = !Args.hasArg(OPT_no_code_completion_globals);
1087  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1088  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1089  Opts.ShowVersion = Args.hasArg(OPT_version);
1090  Opts.ViewClassInheritance = Args.getLastArgValue(OPT_cxx_inheritance_view);
1091  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1092  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1093  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1094  Opts.Modules = Args.getAllArgValues(OPT_import_module);
1095
1096  InputKind DashX = IK_None;
1097  if (const Arg *A = Args.getLastArg(OPT_x)) {
1098    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1099      .Case("c", IK_C)
1100      .Case("cl", IK_OpenCL)
1101      .Case("c", IK_C)
1102      .Case("cl", IK_OpenCL)
1103      .Case("c++", IK_CXX)
1104      .Case("objective-c", IK_ObjC)
1105      .Case("objective-c++", IK_ObjCXX)
1106      .Case("cpp-output", IK_PreprocessedC)
1107      .Case("assembler-with-cpp", IK_Asm)
1108      .Case("c++-cpp-output", IK_PreprocessedCXX)
1109      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1110      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1111      .Case("c-header", IK_C)
1112      .Case("objective-c-header", IK_ObjC)
1113      .Case("c++-header", IK_CXX)
1114      .Case("objective-c++-header", IK_ObjCXX)
1115      .Case("ast", IK_AST)
1116      .Case("ir", IK_LLVM_IR)
1117      .Default(IK_None);
1118    if (DashX == IK_None)
1119      Diags.Report(diag::err_drv_invalid_value)
1120        << A->getAsString(Args) << A->getValue(Args);
1121  }
1122
1123  // '-' is the default input if none is given.
1124  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1125  Opts.Inputs.clear();
1126  if (Inputs.empty())
1127    Inputs.push_back("-");
1128  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1129    InputKind IK = DashX;
1130    if (IK == IK_None) {
1131      IK = FrontendOptions::getInputKindForExtension(
1132        llvm::StringRef(Inputs[i]).rsplit('.').second);
1133      // FIXME: Remove this hack.
1134      if (i == 0)
1135        DashX = IK;
1136    }
1137    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1138  }
1139
1140  return DashX;
1141}
1142
1143std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1144                                                 void *MainAddr) {
1145  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1146
1147  if (!P.isEmpty()) {
1148    P.eraseComponent();  // Remove /clang from foo/bin/clang
1149    P.eraseComponent();  // Remove /bin   from foo/bin
1150
1151    // Get foo/lib/clang/<version>/include
1152    P.appendComponent("lib");
1153    P.appendComponent("clang");
1154    P.appendComponent(CLANG_VERSION_STRING);
1155  }
1156
1157  return P.str();
1158}
1159
1160static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1161  using namespace cc1options;
1162  Opts.CXXSystemIncludes = Args.getAllArgValues(OPT_cxx_system_include);
1163  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1164  Opts.Verbose = Args.hasArg(OPT_v);
1165  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1166  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1167  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1168  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1169
1170  // Add -I... and -F... options in order.
1171  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1172         ie = Args.filtered_end(); it != ie; ++it)
1173    Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1174                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1175
1176  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1177  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1178  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1179                                             OPT_iwithprefixbefore),
1180         ie = Args.filtered_end(); it != ie; ++it) {
1181    const Arg *A = *it;
1182    if (A->getOption().matches(OPT_iprefix))
1183      Prefix = A->getValue(Args);
1184    else if (A->getOption().matches(OPT_iwithprefix))
1185      Opts.AddPath(Prefix.str() + A->getValue(Args),
1186                   frontend::System, false, false, true);
1187    else
1188      Opts.AddPath(Prefix.str() + A->getValue(Args),
1189                   frontend::Angled, false, false, true);
1190  }
1191
1192  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1193         ie = Args.filtered_end(); it != ie; ++it)
1194    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, true);
1195  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1196         ie = Args.filtered_end(); it != ie; ++it)
1197    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, true);
1198  for (arg_iterator it = Args.filtered_begin(OPT_isystem, OPT_iwithsysroot),
1199         ie = Args.filtered_end(); it != ie; ++it)
1200    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1201                 (*it)->getOption().matches(OPT_iwithsysroot));
1202
1203  // FIXME: Need options for the various environment variables!
1204}
1205
1206static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1207                          Diagnostic &Diags) {
1208  // FIXME: Cleanup per-file based stuff.
1209
1210  // Set some properties which depend soley on the input kind; it would be nice
1211  // to move these to the language standard, and have the driver resolve the
1212  // input kind + language standard.
1213  if (IK == IK_Asm) {
1214    Opts.AsmPreprocessor = 1;
1215  } else if (IK == IK_ObjC ||
1216             IK == IK_ObjCXX ||
1217             IK == IK_PreprocessedObjC ||
1218             IK == IK_PreprocessedObjCXX) {
1219    Opts.ObjC1 = Opts.ObjC2 = 1;
1220  }
1221
1222  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1223  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1224    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1225#define LANGSTANDARD(id, name, desc, features) \
1226      .Case(name, LangStandard::lang_##id)
1227#include "clang/Frontend/LangStandards.def"
1228      .Default(LangStandard::lang_unspecified);
1229    if (LangStd == LangStandard::lang_unspecified)
1230      Diags.Report(diag::err_drv_invalid_value)
1231        << A->getAsString(Args) << A->getValue(Args);
1232  }
1233
1234  if (LangStd == LangStandard::lang_unspecified) {
1235    // Based on the base language, pick one.
1236    switch (IK) {
1237    case IK_None:
1238    case IK_AST:
1239    case IK_LLVM_IR:
1240      assert(0 && "Invalid input kind!");
1241    case IK_OpenCL:
1242      LangStd = LangStandard::lang_opencl;
1243      break;
1244    case IK_Asm:
1245    case IK_C:
1246    case IK_PreprocessedC:
1247    case IK_ObjC:
1248    case IK_PreprocessedObjC:
1249      LangStd = LangStandard::lang_gnu99;
1250      break;
1251    case IK_CXX:
1252    case IK_PreprocessedCXX:
1253    case IK_ObjCXX:
1254    case IK_PreprocessedObjCXX:
1255      LangStd = LangStandard::lang_gnucxx98;
1256      break;
1257    }
1258  }
1259
1260  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1261  Opts.BCPLComment = Std.hasBCPLComments();
1262  Opts.C99 = Std.isC99();
1263  Opts.CPlusPlus = Std.isCPlusPlus();
1264  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1265  Opts.Digraphs = Std.hasDigraphs();
1266  Opts.GNUMode = Std.isGNUMode();
1267  Opts.GNUInline = !Std.isC99();
1268  Opts.HexFloats = Std.hasHexFloats();
1269  Opts.ImplicitInt = Std.hasImplicitInt();
1270
1271  // OpenCL has some additional defaults.
1272  if (LangStd == LangStandard::lang_opencl) {
1273    Opts.OpenCL = 1;
1274    Opts.AltiVec = 1;
1275    Opts.CXXOperatorNames = 1;
1276    Opts.LaxVectorConversions = 1;
1277  }
1278
1279  // OpenCL and C++ both have bool, true, false keywords.
1280  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1281
1282  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1283  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1284  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1285  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1286  // name, as it doesn't seem a useful distinction.
1287  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1288                                  Opts.GNUMode);
1289
1290  if (Opts.CPlusPlus)
1291    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1292
1293  if (Args.hasArg(OPT_fobjc_gc_only))
1294    Opts.setGCMode(LangOptions::GCOnly);
1295  else if (Args.hasArg(OPT_fobjc_gc))
1296    Opts.setGCMode(LangOptions::HybridGC);
1297
1298  if (Args.hasArg(OPT_print_ivar_layout))
1299    Opts.ObjCGCBitmapPrint = 1;
1300  if (Args.hasArg(OPT_fno_constant_cfstrings))
1301    Opts.NoConstantCFStrings = 1;
1302
1303  if (Args.hasArg(OPT_faltivec))
1304    Opts.AltiVec = 1;
1305
1306  if (Args.hasArg(OPT_pthread))
1307    Opts.POSIXThreads = 1;
1308
1309  llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1310  if (Vis == "default")
1311    Opts.setVisibilityMode(LangOptions::Default);
1312  else if (Vis == "hidden")
1313    Opts.setVisibilityMode(LangOptions::Hidden);
1314  else if (Vis == "protected")
1315    Opts.setVisibilityMode(LangOptions::Protected);
1316  else
1317    Diags.Report(diag::err_drv_invalid_value)
1318      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1319
1320  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1321    Opts.InlineVisibilityHidden = 1;
1322
1323  if (Args.hasArg(OPT_ftrapv)) {
1324    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1325    // Set the handler, if one is specified.
1326    Opts.OverflowHandler =
1327        Args.getLastArgValue(OPT_ftrapv_handler);
1328  }
1329  else if (Args.hasArg(OPT_fwrapv))
1330    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1331
1332  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1333  // is specified, or -std is set to a conforming mode.
1334  Opts.Trigraphs = !Opts.GNUMode;
1335  if (Args.hasArg(OPT_trigraphs))
1336    Opts.Trigraphs = 1;
1337
1338  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1339                                   OPT_fno_dollars_in_identifiers,
1340                                   !Opts.AsmPreprocessor);
1341  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1342  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1343  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1344  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1345  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1346  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1347    Opts.LaxVectorConversions = 0;
1348  if (Args.hasArg(OPT_fno_threadsafe_statics))
1349    Opts.ThreadsafeStatics = 0;
1350  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1351  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1352  Opts.Blocks = Args.hasArg(OPT_fblocks);
1353  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1354  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1355  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1356  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1357  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1358  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1359  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1360  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1361  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1362  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1363  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1364                                               Diags);
1365  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1366  Opts.ObjCConstantStringClass =
1367    Args.getLastArgValue(OPT_fconstant_string_class);
1368  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1369  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1370  if (Opts.ObjCNonFragileABI2)
1371    Opts.ObjCNonFragileABI = true;
1372  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1373  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1374  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1375  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1376  Opts.Static = Args.hasArg(OPT_static_define);
1377  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1378  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1379  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1380  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1381  Opts.OptimizeSize = 0;
1382
1383  // FIXME: Eliminate this dependency.
1384  unsigned Opt =
1385    Args.hasArg(OPT_Os) ? 2 : Args.getLastArgIntValue(OPT_O, 0, Diags);
1386  Opts.Optimize = Opt != 0;
1387
1388  // This is the __NO_INLINE__ define, which just depends on things like the
1389  // optimization level and -fno-inline, not actually whether the backend has
1390  // inlining enabled.
1391  //
1392  // FIXME: This is affected by other options (-fno-inline).
1393  Opts.NoInline = !Opt;
1394
1395  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1396  switch (SSP) {
1397  default:
1398    Diags.Report(diag::err_drv_invalid_value)
1399      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1400    break;
1401  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1402  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1403  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1404  }
1405}
1406
1407static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1408                                  Diagnostic &Diags) {
1409  using namespace cc1options;
1410  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1411  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1412  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1413      Opts.TokenCache = A->getValue(Args);
1414  else
1415    Opts.TokenCache = Opts.ImplicitPTHInclude;
1416  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1417  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1418  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1419
1420  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1421    llvm::StringRef Value(A->getValue(Args));
1422    size_t Comma = Value.find(',');
1423    unsigned Bytes = 0;
1424    unsigned EndOfLine = 0;
1425
1426    if (Comma == llvm::StringRef::npos ||
1427        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1428        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1429      Diags.Report(diag::err_drv_preamble_format);
1430    else {
1431      Opts.PrecompiledPreambleBytes.first = Bytes;
1432      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1433    }
1434  }
1435
1436  // Add macros from the command line.
1437  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1438         ie = Args.filtered_end(); it != ie; ++it) {
1439    if ((*it)->getOption().matches(OPT_D))
1440      Opts.addMacroDef((*it)->getValue(Args));
1441    else
1442      Opts.addMacroUndef((*it)->getValue(Args));
1443  }
1444
1445  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1446
1447  // Add the ordered list of -includes.
1448  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1449                                             OPT_include_pth),
1450         ie = Args.filtered_end(); it != ie; ++it) {
1451    const Arg *A = *it;
1452    // PCH is handled specially, we need to extra the original include path.
1453    if (A->getOption().matches(OPT_include_pch)) {
1454      std::string OriginalFile =
1455        ASTReader::getOriginalSourceFile(A->getValue(Args), Diags);
1456      if (OriginalFile.empty())
1457        continue;
1458
1459      Opts.Includes.push_back(OriginalFile);
1460    } else
1461      Opts.Includes.push_back(A->getValue(Args));
1462  }
1463
1464  // Include 'altivec.h' if -faltivec option present
1465  if (Args.hasArg(OPT_faltivec))
1466    Opts.Includes.push_back("altivec.h");
1467
1468  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1469         ie = Args.filtered_end(); it != ie; ++it) {
1470    const Arg *A = *it;
1471    std::pair<llvm::StringRef,llvm::StringRef> Split =
1472      llvm::StringRef(A->getValue(Args)).split(';');
1473
1474    if (Split.second.empty()) {
1475      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1476      continue;
1477    }
1478
1479    Opts.addRemappedFile(Split.first, Split.second);
1480  }
1481}
1482
1483static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1484                                        ArgList &Args) {
1485  using namespace cc1options;
1486  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1487  Opts.ShowComments = Args.hasArg(OPT_C);
1488  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1489  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1490  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1491  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1492}
1493
1494static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1495  using namespace cc1options;
1496  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1497  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1498  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1499  Opts.Features = Args.getAllArgValues(OPT_target_feature);
1500  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1501  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1502
1503  // Use the host triple if unspecified.
1504  if (Opts.Triple.empty())
1505    Opts.Triple = llvm::sys::getHostTriple();
1506}
1507
1508//
1509
1510void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1511                                        const char **ArgBegin,
1512                                        const char **ArgEnd,
1513                                        Diagnostic &Diags) {
1514  // Parse the arguments.
1515  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1516  unsigned MissingArgIndex, MissingArgCount;
1517  llvm::OwningPtr<InputArgList> Args(
1518    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1519
1520  // Check for missing argument error.
1521  if (MissingArgCount)
1522    Diags.Report(diag::err_drv_missing_argument)
1523      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1524
1525  // Issue errors on unknown arguments.
1526  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1527         ie = Args->filtered_end(); it != ie; ++it)
1528    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1529
1530  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1531  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1532  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1533  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1534  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1535  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1536  if (DashX != IK_AST && DashX != IK_LLVM_IR)
1537    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1538  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1539  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1540  ParseTargetArgs(Res.getTargetOpts(), *Args);
1541}
1542