CompilerInvocation.cpp revision 212904 
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.EagerlyAssume)
103    Res.push_back("-analyzer-eagerly-assume");
104  if (!Opts.PurgeDead)
105    Res.push_back("-analyzer-no-purge-dead");
106  if (Opts.TrimGraph)
107    Res.push_back("-trim-egraph");
108  if (Opts.VisualizeEGDot)
109    Res.push_back("-analyzer-viz-egraph-graphviz");
110  if (Opts.VisualizeEGDot)
111    Res.push_back("-analyzer-viz-egraph-ubigraph");
112  if (Opts.EnableExperimentalChecks)
113    Res.push_back("-analyzer-experimental-checks");
114  if (Opts.EnableExperimentalInternalChecks)
115    Res.push_back("-analyzer-experimental-internal-checks");
116  if (Opts.IdempotentOps)
117      Res.push_back("-analyzer-check-idempotent-operations");
118}
119
120static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
121                              std::vector<std::string> &Res) {
122  if (Opts.DebugInfo)
123    Res.push_back("-g");
124  if (Opts.DisableLLVMOpts)
125    Res.push_back("-disable-llvm-optzns");
126  if (Opts.DisableRedZone)
127    Res.push_back("-disable-red-zone");
128  if (!Opts.DwarfDebugFlags.empty()) {
129    Res.push_back("-dwarf-debug-flags");
130    Res.push_back(Opts.DwarfDebugFlags);
131  }
132  if (!Opts.MergeAllConstants)
133    Res.push_back("-fno-merge-all-constants");
134  if (Opts.NoCommon)
135    Res.push_back("-fno-common");
136  if (Opts.NoImplicitFloat)
137    Res.push_back("-no-implicit-float");
138  if (Opts.OmitLeafFramePointer)
139    Res.push_back("-momit-leaf-frame-pointer");
140  if (Opts.OptimizeSize) {
141    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
142    Res.push_back("-Os");
143  } else if (Opts.OptimizationLevel != 0)
144    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
145  if (!Opts.MainFileName.empty()) {
146    Res.push_back("-main-file-name");
147    Res.push_back(Opts.MainFileName);
148  }
149  // SimplifyLibCalls is only derived.
150  // TimePasses is only derived.
151  // UnitAtATime is unused.
152  // Inlining is only derived.
153
154  // UnrollLoops is derived, but also accepts an option, no
155  // harm in pushing it back here.
156  if (Opts.UnrollLoops)
157    Res.push_back("-funroll-loops");
158  if (Opts.DataSections)
159    Res.push_back("-fdata-sections");
160  if (Opts.FunctionSections)
161    Res.push_back("-ffunction-sections");
162  if (Opts.AsmVerbose)
163    Res.push_back("-masm-verbose");
164  if (!Opts.CodeModel.empty()) {
165    Res.push_back("-mcode-model");
166    Res.push_back(Opts.CodeModel);
167  }
168  if (!Opts.CXAAtExit)
169    Res.push_back("-fno-use-cxa-atexit");
170  if (Opts.CXXCtorDtorAliases)
171    Res.push_back("-mconstructor-aliases");
172  if (!Opts.DebugPass.empty()) {
173    Res.push_back("-mdebug-pass");
174    Res.push_back(Opts.DebugPass);
175  }
176  if (Opts.DisableFPElim)
177    Res.push_back("-mdisable-fp-elim");
178  if (!Opts.FloatABI.empty()) {
179    Res.push_back("-mfloat-abi");
180    Res.push_back(Opts.FloatABI);
181  }
182  if (!Opts.LimitFloatPrecision.empty()) {
183    Res.push_back("-mlimit-float-precision");
184    Res.push_back(Opts.LimitFloatPrecision);
185  }
186  if (Opts.NoZeroInitializedInBSS)
187    Res.push_back("-mno-zero-initialized-bss");
188  switch (Opts.getObjCDispatchMethod()) {
189  case CodeGenOptions::Legacy:
190    break;
191  case CodeGenOptions::Mixed:
192    Res.push_back("-fobjc-dispatch-method=mixed");
193    break;
194  case CodeGenOptions::NonLegacy:
195    Res.push_back("-fobjc-dispatch-method=non-legacy");
196    break;
197  }
198  if (Opts.RelaxAll)
199    Res.push_back("-mrelax-all");
200  if (Opts.SoftFloat)
201    Res.push_back("-msoft-float");
202  if (Opts.UnwindTables)
203    Res.push_back("-munwind-tables");
204  if (Opts.RelocationModel != "pic") {
205    Res.push_back("-mrelocation-model");
206    Res.push_back(Opts.RelocationModel);
207  }
208  if (!Opts.VerifyModule)
209    Res.push_back("-disable-llvm-verifier");
210}
211
212static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
213                                       std::vector<std::string> &Res) {
214  if (Opts.IncludeSystemHeaders)
215    Res.push_back("-sys-header-deps");
216  if (Opts.UsePhonyTargets)
217    Res.push_back("-MP");
218  if (!Opts.OutputFile.empty()) {
219    Res.push_back("-dependency-file");
220    Res.push_back(Opts.OutputFile);
221  }
222  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
223    Res.push_back("-MT");
224    Res.push_back(Opts.Targets[i]);
225  }
226}
227
228static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
229                                 std::vector<std::string> &Res) {
230  if (Opts.IgnoreWarnings)
231    Res.push_back("-w");
232  if (Opts.NoRewriteMacros)
233    Res.push_back("-Wno-rewrite-macros");
234  if (Opts.Pedantic)
235    Res.push_back("-pedantic");
236  if (Opts.PedanticErrors)
237    Res.push_back("-pedantic-errors");
238  if (!Opts.ShowColumn)
239    Res.push_back("-fno-show-column");
240  if (!Opts.ShowLocation)
241    Res.push_back("-fno-show-source-location");
242  if (!Opts.ShowCarets)
243    Res.push_back("-fno-caret-diagnostics");
244  if (!Opts.ShowFixits)
245    Res.push_back("-fno-diagnostics-fixit-info");
246  if (Opts.ShowSourceRanges)
247    Res.push_back("-fdiagnostics-print-source-range-info");
248  if (Opts.ShowParseableFixits)
249    Res.push_back("-fdiagnostics-parseable-fixits");
250  if (Opts.ShowColors)
251    Res.push_back("-fcolor-diagnostics");
252  if (Opts.VerifyDiagnostics)
253    Res.push_back("-verify");
254  if (Opts.BinaryOutput)
255    Res.push_back("-fdiagnostics-binary");
256  if (Opts.ShowOptionNames)
257    Res.push_back("-fdiagnostics-show-option");
258  if (Opts.ShowCategories == 1)
259    Res.push_back("-fdiagnostics-show-category=id");
260  else if (Opts.ShowCategories == 2)
261    Res.push_back("-fdiagnostics-show-category=name");
262  if (Opts.ErrorLimit) {
263    Res.push_back("-ferror-limit");
264    Res.push_back(llvm::utostr(Opts.ErrorLimit));
265  }
266  if (Opts.MacroBacktraceLimit
267                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
268    Res.push_back("-fmacro-backtrace-limit");
269    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
270  }
271  if (Opts.TemplateBacktraceLimit
272                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
273    Res.push_back("-ftemplate-backtrace-limit");
274    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
275  }
276
277  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
278    Res.push_back("-ftabstop");
279    Res.push_back(llvm::utostr(Opts.TabStop));
280  }
281  if (Opts.MessageLength) {
282    Res.push_back("-fmessage-length");
283    Res.push_back(llvm::utostr(Opts.MessageLength));
284  }
285  if (!Opts.DumpBuildInformation.empty()) {
286    Res.push_back("-dump-build-information");
287    Res.push_back(Opts.DumpBuildInformation);
288  }
289  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
290    Res.push_back("-W" + Opts.Warnings[i]);
291}
292
293static const char *getInputKindName(InputKind Kind) {
294  switch (Kind) {
295  case IK_None:              break;
296  case IK_AST:               return "ast";
297  case IK_Asm:               return "assembler-with-cpp";
298  case IK_C:                 return "c";
299  case IK_CXX:               return "c++";
300  case IK_LLVM_IR:           return "ir";
301  case IK_ObjC:              return "objective-c";
302  case IK_ObjCXX:            return "objective-c++";
303  case IK_OpenCL:            return "cl";
304  case IK_PreprocessedC:     return "cpp-output";
305  case IK_PreprocessedCXX:   return "c++-cpp-output";
306  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
307  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
308  }
309
310  llvm_unreachable("Unexpected language kind!");
311  return 0;
312}
313
314static const char *getActionName(frontend::ActionKind Kind) {
315  switch (Kind) {
316  case frontend::PluginAction:
317  case frontend::InheritanceView:
318    llvm_unreachable("Invalid kind!");
319
320  case frontend::ASTDump:                return "-ast-dump";
321  case frontend::ASTPrint:               return "-ast-print";
322  case frontend::ASTPrintXML:            return "-ast-print-xml";
323  case frontend::ASTView:                return "-ast-view";
324  case frontend::BoostCon:               return "-boostcon";
325  case frontend::CreateModule:           return "-create-module";
326  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
327  case frontend::DumpTokens:             return "-dump-tokens";
328  case frontend::EmitAssembly:           return "-S";
329  case frontend::EmitBC:                 return "-emit-llvm-bc";
330  case frontend::EmitHTML:               return "-emit-html";
331  case frontend::EmitLLVM:               return "-emit-llvm";
332  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
333  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
334  case frontend::EmitObj:                return "-emit-obj";
335  case frontend::FixIt:                  return "-fixit";
336  case frontend::GeneratePCH:            return "-emit-pch";
337  case frontend::GeneratePTH:            return "-emit-pth";
338  case frontend::InitOnly:               return "-init-only";
339  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
340  case frontend::PrintDeclContext:       return "-print-decl-contexts";
341  case frontend::PrintPreamble:          return "-print-preamble";
342  case frontend::PrintPreprocessedInput: return "-E";
343  case frontend::RewriteMacros:          return "-rewrite-macros";
344  case frontend::RewriteObjC:            return "-rewrite-objc";
345  case frontend::RewriteTest:            return "-rewrite-test";
346  case frontend::RunAnalysis:            return "-analyze";
347  case frontend::RunPreprocessorOnly:    return "-Eonly";
348  }
349
350  llvm_unreachable("Unexpected language kind!");
351  return 0;
352}
353
354static void FrontendOptsToArgs(const FrontendOptions &Opts,
355                               std::vector<std::string> &Res) {
356  if (!Opts.DebugCodeCompletionPrinter)
357    Res.push_back("-no-code-completion-debug-printer");
358  if (Opts.DisableFree)
359    Res.push_back("-disable-free");
360  if (Opts.RelocatablePCH)
361    Res.push_back("-relocatable-pch");
362  if (Opts.ChainedPCH)
363    Res.push_back("-chained-pch");
364  if (Opts.ShowHelp)
365    Res.push_back("-help");
366  if (Opts.ShowMacrosInCodeCompletion)
367    Res.push_back("-code-completion-macros");
368  if (Opts.ShowCodePatternsInCodeCompletion)
369    Res.push_back("-code-completion-patterns");
370  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
371    Res.push_back("-no-code-completion-globals");
372  if (Opts.ShowStats)
373    Res.push_back("-print-stats");
374  if (Opts.ShowTimers)
375    Res.push_back("-ftime-report");
376  if (Opts.ShowVersion)
377    Res.push_back("-version");
378  if (Opts.FixWhatYouCan)
379    Res.push_back("-fix-what-you-can");
380
381  bool NeedLang = false;
382  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
383    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
384        Opts.Inputs[i].first)
385      NeedLang = true;
386  if (NeedLang) {
387    Res.push_back("-x");
388    Res.push_back(getInputKindName(Opts.Inputs[0].first));
389  }
390  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
391    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
392           "Unable to represent this input vector!");
393    Res.push_back(Opts.Inputs[i].second);
394  }
395
396  if (!Opts.OutputFile.empty()) {
397    Res.push_back("-o");
398    Res.push_back(Opts.OutputFile);
399  }
400  if (!Opts.ViewClassInheritance.empty()) {
401    Res.push_back("-cxx-inheritance-view");
402    Res.push_back(Opts.ViewClassInheritance);
403  }
404  if (!Opts.CodeCompletionAt.FileName.empty()) {
405    Res.push_back("-code-completion-at");
406    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
407                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
408                  llvm::utostr(Opts.CodeCompletionAt.Column));
409  }
410  if (Opts.ProgramAction != frontend::InheritanceView &&
411      Opts.ProgramAction != frontend::PluginAction)
412    Res.push_back(getActionName(Opts.ProgramAction));
413  if (!Opts.ActionName.empty()) {
414    Res.push_back("-plugin");
415    Res.push_back(Opts.ActionName);
416    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
417      Res.push_back("-plugin-arg-" + Opts.ActionName);
418      Res.push_back(Opts.PluginArgs[i]);
419    }
420  }
421  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
422    Res.push_back("-load");
423    Res.push_back(Opts.Plugins[i]);
424  }
425  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
426    Res.push_back("-ast-merge");
427    Res.push_back(Opts.ASTMergeFiles[i]);
428  }
429  for (unsigned i = 0, e = Opts.Modules.size(); i != e; ++i) {
430    Res.push_back("-import-module");
431    Res.push_back(Opts.Modules[i]);
432  }
433  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
434    Res.push_back("-mllvm");
435    Res.push_back(Opts.LLVMArgs[i]);
436  }
437}
438
439static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
440                                   std::vector<std::string> &Res) {
441  if (Opts.Sysroot != "/") {
442    Res.push_back("-isysroot");
443    Res.push_back(Opts.Sysroot);
444  }
445
446  /// User specified include entries.
447  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
448    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
449    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
450      llvm::report_fatal_error("Invalid option set!");
451    if (E.IsUserSupplied) {
452      if (E.Group == frontend::After) {
453        Res.push_back("-idirafter");
454      } else if (E.Group == frontend::Quoted) {
455        Res.push_back("-iquote");
456      } else if (E.Group == frontend::System) {
457        Res.push_back("-isystem");
458      } else {
459        assert(E.Group == frontend::Angled && "Invalid group!");
460        Res.push_back(E.IsFramework ? "-F" : "-I");
461      }
462    } else {
463      if (E.Group != frontend::Angled && E.Group != frontend::System)
464        llvm::report_fatal_error("Invalid option set!");
465      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
466                    "-iwithprefix");
467    }
468    Res.push_back(E.Path);
469  }
470
471  if (!Opts.EnvIncPath.empty()) {
472    // FIXME: Provide an option for this, and move env detection to driver.
473    llvm::report_fatal_error("Not yet implemented!");
474  }
475  if (!Opts.CEnvIncPath.empty()) {
476    // FIXME: Provide an option for this, and move env detection to driver.
477    llvm::report_fatal_error("Not yet implemented!");
478  }
479  if (!Opts.ObjCEnvIncPath.empty()) {
480    // FIXME: Provide an option for this, and move env detection to driver.
481    llvm::report_fatal_error("Not yet implemented!");
482  }
483  if (!Opts.CXXEnvIncPath.empty()) {
484    // FIXME: Provide an option for this, and move env detection to driver.
485    llvm::report_fatal_error("Not yet implemented!");
486  }
487  if (!Opts.ObjCXXEnvIncPath.empty()) {
488    // FIXME: Provide an option for this, and move env detection to driver.
489    llvm::report_fatal_error("Not yet implemented!");
490  }
491  if (!Opts.ResourceDir.empty()) {
492    Res.push_back("-resource-dir");
493    Res.push_back(Opts.ResourceDir);
494  }
495  if (!Opts.UseStandardIncludes)
496    Res.push_back("-nostdinc");
497  if (!Opts.UseStandardCXXIncludes)
498    Res.push_back("-nostdinc++");
499  if (Opts.Verbose)
500    Res.push_back("-v");
501}
502
503static void LangOptsToArgs(const LangOptions &Opts,
504                           std::vector<std::string> &Res) {
505  LangOptions DefaultLangOpts;
506
507  // FIXME: Need to set -std to get all the implicit options.
508
509  // FIXME: We want to only pass options relative to the defaults, which
510  // requires constructing a target. :(
511  //
512  // It would be better to push the all target specific choices into the driver,
513  // so that everything below that was more uniform.
514
515  if (Opts.Trigraphs)
516    Res.push_back("-trigraphs");
517  // Implicit based on the input kind:
518  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
519  // Implicit based on the input language standard:
520  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
521  if (Opts.DollarIdents)
522    Res.push_back("-fdollars-in-identifiers");
523  if (Opts.GNUMode && !Opts.GNUKeywords)
524    Res.push_back("-fno-gnu-keywords");
525  if (!Opts.GNUMode && Opts.GNUKeywords)
526    Res.push_back("-fgnu-keywords");
527  if (Opts.Microsoft)
528    Res.push_back("-fms-extensions");
529  if (Opts.Borland)
530    Res.push_back("-fborland-extensions");
531  if (Opts.ObjCNonFragileABI)
532    Res.push_back("-fobjc-nonfragile-abi");
533  if (Opts.ObjCNonFragileABI2)
534    Res.push_back("-fobjc-nonfragile-abi2");
535  // NoInline is implicit.
536  if (!Opts.CXXOperatorNames)
537    Res.push_back("-fno-operator-names");
538  if (Opts.PascalStrings)
539    Res.push_back("-fpascal-strings");
540  if (Opts.CatchUndefined)
541    Res.push_back("-fcatch-undefined-behavior");
542  if (Opts.WritableStrings)
543    Res.push_back("-fwritable-strings");
544  if (Opts.ConstStrings)
545    Res.push_back("-Wwrite-strings");
546  if (!Opts.LaxVectorConversions)
547    Res.push_back("-fno-lax-vector-conversions");
548  if (Opts.AltiVec)
549    Res.push_back("-faltivec");
550  if (Opts.Exceptions)
551    Res.push_back("-fexceptions");
552  if (Opts.SjLjExceptions)
553    Res.push_back("-fsjlj-exceptions");
554  if (!Opts.RTTI)
555    Res.push_back("-fno-rtti");
556  if (!Opts.NeXTRuntime)
557    Res.push_back("-fgnu-runtime");
558  if (Opts.Freestanding)
559    Res.push_back("-ffreestanding");
560  if (Opts.FormatExtensions)
561    Res.push_back("-fformat-extensions");
562  if (Opts.NoBuiltin)
563    Res.push_back("-fno-builtin");
564  if (!Opts.AssumeSaneOperatorNew)
565    Res.push_back("-fno-assume-sane-operator-new");
566  if (!Opts.ThreadsafeStatics)
567    Res.push_back("-fno-threadsafe-statics");
568  if (Opts.POSIXThreads)
569    Res.push_back("-pthread");
570  if (Opts.Blocks)
571    Res.push_back("-fblocks");
572  if (Opts.EmitAllDecls)
573    Res.push_back("-femit-all-decls");
574  if (Opts.MathErrno)
575    Res.push_back("-fmath-errno");
576  switch (Opts.getSignedOverflowBehavior()) {
577  case LangOptions::SOB_Undefined: break;
578  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
579  case LangOptions::SOB_Trapping:  Res.push_back("-ftrapv"); break;
580  }
581  if (Opts.HeinousExtensions)
582    Res.push_back("-fheinous-gnu-extensions");
583  // Optimize is implicit.
584  // OptimizeSize is implicit.
585  if (Opts.Static)
586    Res.push_back("-static-define");
587  if (Opts.DumpRecordLayouts)
588    Res.push_back("-fdump-record-layouts");
589  if (Opts.DumpVTableLayouts)
590    Res.push_back("-fdump-vtable-layouts");
591  if (Opts.NoBitFieldTypeAlign)
592    Res.push_back("-fno-bitfield-type-alignment");
593  if (Opts.SjLjExceptions)
594    Res.push_back("-fsjlj-exceptions");
595  if (Opts.PICLevel) {
596    Res.push_back("-pic-level");
597    Res.push_back(llvm::utostr(Opts.PICLevel));
598  }
599  if (Opts.ObjCGCBitmapPrint)
600    Res.push_back("-print-ivar-layout");
601  if (Opts.NoConstantCFStrings)
602    Res.push_back("-fno-constant-cfstrings");
603  if (!Opts.AccessControl)
604    Res.push_back("-fno-access-control");
605  if (!Opts.CharIsSigned)
606    Res.push_back("-fno-signed-char");
607  if (Opts.ShortWChar)
608    Res.push_back("-fshort-wchar");
609  if (!Opts.ElideConstructors)
610    Res.push_back("-fno-elide-constructors");
611  if (Opts.getGCMode() != LangOptions::NonGC) {
612    if (Opts.getGCMode() == LangOptions::HybridGC) {
613      Res.push_back("-fobjc-gc");
614    } else {
615      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
616      Res.push_back("-fobjc-gc-only");
617    }
618  }
619  if (Opts.getVisibilityMode() != LangOptions::Default) {
620    Res.push_back("-fvisibility");
621    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
622      Res.push_back("hidden");
623    } else {
624      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
625             "Invalid visibility!");
626      Res.push_back("protected");
627    }
628  }
629  if (Opts.InlineVisibilityHidden)
630    Res.push_back("-fvisibility-inlines-hidden");
631
632  if (Opts.getStackProtectorMode() != 0) {
633    Res.push_back("-stack-protector");
634    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
635  }
636  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
637    Res.push_back("-ftemplate-depth");
638    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
639  }
640  if (!Opts.ObjCConstantStringClass.empty()) {
641    Res.push_back("-fconstant-string-class");
642    Res.push_back(Opts.ObjCConstantStringClass);
643  }
644}
645
646static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
647                                   std::vector<std::string> &Res) {
648  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
649    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
650                  Opts.Macros[i].first);
651  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
652    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
653    Res.push_back("-include");
654    Res.push_back(Opts.Includes[i]);
655  }
656  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
657    Res.push_back("-imacros");
658    Res.push_back(Opts.MacroIncludes[i]);
659  }
660  if (!Opts.UsePredefines)
661    Res.push_back("-undef");
662  if (Opts.DetailedRecord)
663    Res.push_back("-detailed-preprocessing-record");
664  if (!Opts.ImplicitPCHInclude.empty()) {
665    Res.push_back("-include-pch");
666    Res.push_back(Opts.ImplicitPCHInclude);
667  }
668  if (!Opts.ImplicitPTHInclude.empty()) {
669    Res.push_back("-include-pth");
670    Res.push_back(Opts.ImplicitPTHInclude);
671  }
672  if (!Opts.TokenCache.empty()) {
673    if (Opts.ImplicitPTHInclude.empty()) {
674      Res.push_back("-token-cache");
675      Res.push_back(Opts.TokenCache);
676    } else
677      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
678             "Unsupported option combination!");
679  }
680  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
681    Res.push_back("-remap-file");
682    Res.push_back(Opts.RemappedFiles[i].first + ";" +
683                  Opts.RemappedFiles[i].second);
684  }
685}
686
687static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
688                                         std::vector<std::string> &Res) {
689  if (!Opts.ShowCPP && !Opts.ShowMacros)
690    llvm::report_fatal_error("Invalid option combination!");
691
692  if (Opts.ShowCPP && Opts.ShowMacros)
693    Res.push_back("-dD");
694  else if (!Opts.ShowCPP && Opts.ShowMacros)
695    Res.push_back("-dM");
696
697  if (Opts.ShowHeaderIncludes)
698    Res.push_back("-H");
699  if (!Opts.ShowLineMarkers)
700    Res.push_back("-P");
701  if (Opts.ShowComments)
702    Res.push_back("-C");
703  if (Opts.ShowMacroComments)
704    Res.push_back("-CC");
705}
706
707static void TargetOptsToArgs(const TargetOptions &Opts,
708                             std::vector<std::string> &Res) {
709  Res.push_back("-triple");
710  Res.push_back(Opts.Triple);
711  if (!Opts.CPU.empty()) {
712    Res.push_back("-target-cpu");
713    Res.push_back(Opts.CPU);
714  }
715  if (!Opts.ABI.empty()) {
716    Res.push_back("-target-abi");
717    Res.push_back(Opts.ABI);
718  }
719  if (!Opts.LinkerVersion.empty()) {
720    Res.push_back("-target-linker-version");
721    Res.push_back(Opts.LinkerVersion);
722  }
723  if (!Opts.CXXABI.empty()) {
724    Res.push_back("-cxx-abi");
725    Res.push_back(Opts.CXXABI);
726  }
727  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
728    Res.push_back("-target-feature");
729    Res.push_back(Opts.Features[i]);
730  }
731}
732
733void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
734  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
735  CodeGenOptsToArgs(getCodeGenOpts(), Res);
736  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
737  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
738  FrontendOptsToArgs(getFrontendOpts(), Res);
739  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
740  LangOptsToArgs(getLangOpts(), Res);
741  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
742  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
743  TargetOptsToArgs(getTargetOpts(), Res);
744}
745
746//===----------------------------------------------------------------------===//
747// Deserialization (to args)
748//===----------------------------------------------------------------------===//
749
750using namespace clang::driver;
751using namespace clang::driver::cc1options;
752
753//
754
755static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
756                              Diagnostic &Diags) {
757  using namespace cc1options;
758
759  Opts.AnalysisList.clear();
760#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
761  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
762#include "clang/Frontend/Analyses.def"
763
764  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
765    llvm::StringRef Name = A->getValue(Args);
766    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
767#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
768      .Case(CMDFLAG, NAME##Model)
769#include "clang/Frontend/Analyses.def"
770      .Default(NumStores);
771    // FIXME: Error handling.
772    if (Value == NumStores)
773      Diags.Report(diag::err_drv_invalid_value)
774        << A->getAsString(Args) << Name;
775    else
776      Opts.AnalysisStoreOpt = Value;
777  }
778
779  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
780    llvm::StringRef Name = A->getValue(Args);
781    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
782#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
783      .Case(CMDFLAG, NAME##Model)
784#include "clang/Frontend/Analyses.def"
785      .Default(NumConstraints);
786    // FIXME: Error handling.
787    if (Value == NumConstraints)
788      Diags.Report(diag::err_drv_invalid_value)
789        << A->getAsString(Args) << Name;
790    else
791      Opts.AnalysisConstraintsOpt = Value;
792  }
793
794  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
795    llvm::StringRef Name = A->getValue(Args);
796    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
797#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
798      .Case(CMDFLAG, PD_##NAME)
799#include "clang/Frontend/Analyses.def"
800      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
801    // FIXME: Error handling.
802    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
803      Diags.Report(diag::err_drv_invalid_value)
804        << A->getAsString(Args) << Name;
805    else
806      Opts.AnalysisDiagOpt = Value;
807  }
808
809  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
810  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
811  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
812  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
813  Opts.AnalyzeNestedBlocks =
814    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
815  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
816  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
817  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
818  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
819  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
820  Opts.EnableExperimentalInternalChecks =
821    Args.hasArg(OPT_analyzer_experimental_internal_checks);
822  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
823  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
824  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 3, Diags);
825  Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
826  Opts.IdempotentOps = Args.hasArg(OPT_analysis_WarnIdempotentOps);
827}
828
829static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
830                             Diagnostic &Diags) {
831  using namespace cc1options;
832  // -Os implies -O2
833  if (Args.hasArg(OPT_Os))
834    Opts.OptimizationLevel = 2;
835  else {
836    Opts.OptimizationLevel = Args.getLastArgIntValue(OPT_O, 0, Diags);
837    if (Opts.OptimizationLevel > 3) {
838      Diags.Report(diag::err_drv_invalid_value)
839        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
840      Opts.OptimizationLevel = 3;
841    }
842  }
843
844  // We must always run at least the always inlining pass.
845  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
846    : CodeGenOptions::OnlyAlwaysInlining;
847
848  Opts.DebugInfo = Args.hasArg(OPT_g);
849  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
850  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
851  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
852  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
853  Opts.NoCommon = Args.hasArg(OPT_fno_common);
854  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
855  Opts.OptimizeSize = Args.hasArg(OPT_Os);
856  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
857                            Args.hasArg(OPT_ffreestanding));
858  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
859                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
860
861  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
862  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
863  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
864  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
865  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
866  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
867  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
868  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
869  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
870  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
871  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
872  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
873  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
874  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
875  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
876
877  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
878  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
879
880  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
881  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
882
883  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
884
885  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
886    llvm::StringRef Name = A->getValue(Args);
887    unsigned Method = llvm::StringSwitch<unsigned>(Name)
888      .Case("legacy", CodeGenOptions::Legacy)
889      .Case("non-legacy", CodeGenOptions::NonLegacy)
890      .Case("mixed", CodeGenOptions::Mixed)
891      .Default(~0U);
892    if (Method == ~0U)
893      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
894    else
895      Opts.ObjCDispatchMethod = Method;
896  }
897}
898
899static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
900                                      ArgList &Args) {
901  using namespace cc1options;
902  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
903  Opts.Targets = Args.getAllArgValues(OPT_MT);
904  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
905  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
906}
907
908static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
909                                Diagnostic &Diags) {
910  using namespace cc1options;
911  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
912  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
913  Opts.Pedantic = Args.hasArg(OPT_pedantic);
914  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
915  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
916  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
917  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
918  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
919  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
920  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
921
922  llvm::StringRef ShowOverloads =
923    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
924  if (ShowOverloads == "best")
925    Opts.ShowOverloads = Diagnostic::Ovl_Best;
926  else if (ShowOverloads == "all")
927    Opts.ShowOverloads = Diagnostic::Ovl_All;
928  else
929    Diags.Report(diag::err_drv_invalid_value)
930      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
931      << ShowOverloads;
932
933  llvm::StringRef ShowCategory =
934    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
935  if (ShowCategory == "none")
936    Opts.ShowCategories = 0;
937  else if (ShowCategory == "id")
938    Opts.ShowCategories = 1;
939  else if (ShowCategory == "name")
940    Opts.ShowCategories = 2;
941  else
942    Diags.Report(diag::err_drv_invalid_value)
943      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
944      << ShowCategory;
945
946  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
947  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
948  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
949  Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
950  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
951  Opts.MacroBacktraceLimit
952    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
953                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
954  Opts.TemplateBacktraceLimit
955    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
956                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
957                         Diags);
958  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
959                                    DiagnosticOptions::DefaultTabStop, Diags);
960  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
961    Diags.Report(diag::warn_ignoring_ftabstop_value)
962      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
963    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
964  }
965  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
966  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
967  Opts.Warnings = Args.getAllArgValues(OPT_W);
968}
969
970static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
971                                   Diagnostic &Diags) {
972  using namespace cc1options;
973  Opts.ProgramAction = frontend::ParseSyntaxOnly;
974  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
975    switch (A->getOption().getID()) {
976    default:
977      assert(0 && "Invalid option in group!");
978    case OPT_ast_dump:
979      Opts.ProgramAction = frontend::ASTDump; break;
980    case OPT_ast_print:
981      Opts.ProgramAction = frontend::ASTPrint; break;
982    case OPT_ast_print_xml:
983      Opts.ProgramAction = frontend::ASTPrintXML; break;
984    case OPT_ast_view:
985      Opts.ProgramAction = frontend::ASTView; break;
986    case OPT_boostcon:
987      Opts.ProgramAction = frontend::BoostCon; break;
988    case OPT_dump_raw_tokens:
989      Opts.ProgramAction = frontend::DumpRawTokens; break;
990    case OPT_dump_tokens:
991      Opts.ProgramAction = frontend::DumpTokens; break;
992    case OPT_S:
993      Opts.ProgramAction = frontend::EmitAssembly; break;
994    case OPT_emit_llvm_bc:
995      Opts.ProgramAction = frontend::EmitBC; break;
996    case OPT_emit_html:
997      Opts.ProgramAction = frontend::EmitHTML; break;
998    case OPT_emit_llvm:
999      Opts.ProgramAction = frontend::EmitLLVM; break;
1000    case OPT_emit_llvm_only:
1001      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1002    case OPT_emit_codegen_only:
1003      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1004    case OPT_emit_obj:
1005      Opts.ProgramAction = frontend::EmitObj; break;
1006    case OPT_fixit_EQ:
1007      Opts.FixItSuffix = A->getValue(Args);
1008      // fall-through!
1009    case OPT_fixit:
1010      Opts.ProgramAction = frontend::FixIt; break;
1011    case OPT_emit_pch:
1012      Opts.ProgramAction = frontend::GeneratePCH; break;
1013    case OPT_emit_pth:
1014      Opts.ProgramAction = frontend::GeneratePTH; break;
1015    case OPT_init_only:
1016      Opts.ProgramAction = frontend::InitOnly; break;
1017    case OPT_fsyntax_only:
1018      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1019    case OPT_print_decl_contexts:
1020      Opts.ProgramAction = frontend::PrintDeclContext; break;
1021    case OPT_print_preamble:
1022      Opts.ProgramAction = frontend::PrintPreamble; break;
1023    case OPT_E:
1024      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1025    case OPT_rewrite_macros:
1026      Opts.ProgramAction = frontend::RewriteMacros; break;
1027    case OPT_rewrite_objc:
1028      Opts.ProgramAction = frontend::RewriteObjC; break;
1029    case OPT_rewrite_test:
1030      Opts.ProgramAction = frontend::RewriteTest; break;
1031    case OPT_analyze:
1032      Opts.ProgramAction = frontend::RunAnalysis; break;
1033    case OPT_Eonly:
1034      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1035    case OPT_create_module:
1036      Opts.ProgramAction = frontend::CreateModule; break;
1037    }
1038  }
1039
1040  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1041    Opts.Plugins.push_back(A->getValue(Args,0));
1042    Opts.ProgramAction = frontend::PluginAction;
1043    Opts.ActionName = A->getValue(Args);
1044
1045    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1046           end = Args.filtered_end(); it != end; ++it) {
1047      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1048        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1049    }
1050  }
1051
1052  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1053    Opts.CodeCompletionAt =
1054      ParsedSourceLocation::FromString(A->getValue(Args));
1055    if (Opts.CodeCompletionAt.FileName.empty())
1056      Diags.Report(diag::err_drv_invalid_value)
1057        << A->getAsString(Args) << A->getValue(Args);
1058  }
1059  Opts.DebugCodeCompletionPrinter =
1060    !Args.hasArg(OPT_no_code_completion_debug_printer);
1061  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1062
1063  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1064  Opts.Plugins = Args.getAllArgValues(OPT_load);
1065  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1066  Opts.ChainedPCH = Args.hasArg(OPT_chained_pch);
1067  Opts.ShowHelp = Args.hasArg(OPT_help);
1068  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1069  Opts.ShowCodePatternsInCodeCompletion
1070    = Args.hasArg(OPT_code_completion_patterns);
1071  Opts.ShowGlobalSymbolsInCodeCompletion
1072    = !Args.hasArg(OPT_no_code_completion_globals);
1073  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1074  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1075  Opts.ShowVersion = Args.hasArg(OPT_version);
1076  Opts.ViewClassInheritance = Args.getLastArgValue(OPT_cxx_inheritance_view);
1077  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1078  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1079  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1080  Opts.Modules = Args.getAllArgValues(OPT_import_module);
1081
1082  InputKind DashX = IK_None;
1083  if (const Arg *A = Args.getLastArg(OPT_x)) {
1084    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1085      .Case("c", IK_C)
1086      .Case("cl", IK_OpenCL)
1087      .Case("c", IK_C)
1088      .Case("cl", IK_OpenCL)
1089      .Case("c++", IK_CXX)
1090      .Case("objective-c", IK_ObjC)
1091      .Case("objective-c++", IK_ObjCXX)
1092      .Case("cpp-output", IK_PreprocessedC)
1093      .Case("assembler-with-cpp", IK_Asm)
1094      .Case("c++-cpp-output", IK_PreprocessedCXX)
1095      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1096      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1097      .Case("c-header", IK_C)
1098      .Case("objective-c-header", IK_ObjC)
1099      .Case("c++-header", IK_CXX)
1100      .Case("objective-c++-header", IK_ObjCXX)
1101      .Case("ast", IK_AST)
1102      .Case("ir", IK_LLVM_IR)
1103      .Default(IK_None);
1104    if (DashX == IK_None)
1105      Diags.Report(diag::err_drv_invalid_value)
1106        << A->getAsString(Args) << A->getValue(Args);
1107  }
1108
1109  // '-' is the default input if none is given.
1110  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1111  Opts.Inputs.clear();
1112  if (Inputs.empty())
1113    Inputs.push_back("-");
1114  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1115    InputKind IK = DashX;
1116    if (IK == IK_None) {
1117      IK = FrontendOptions::getInputKindForExtension(
1118        llvm::StringRef(Inputs[i]).rsplit('.').second);
1119      // FIXME: Remove this hack.
1120      if (i == 0)
1121        DashX = IK;
1122    }
1123    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1124  }
1125
1126  return DashX;
1127}
1128
1129std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1130                                                 void *MainAddr) {
1131  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1132
1133  if (!P.isEmpty()) {
1134    P.eraseComponent();  // Remove /clang from foo/bin/clang
1135    P.eraseComponent();  // Remove /bin   from foo/bin
1136
1137    // Get foo/lib/clang/<version>/include
1138    P.appendComponent("lib");
1139    P.appendComponent("clang");
1140    P.appendComponent(CLANG_VERSION_STRING);
1141  }
1142
1143  return P.str();
1144}
1145
1146static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1147  using namespace cc1options;
1148  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1149  Opts.Verbose = Args.hasArg(OPT_v);
1150  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1151  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1152  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1153  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1154
1155  // Add -I... and -F... options in order.
1156  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1157         ie = Args.filtered_end(); it != ie; ++it)
1158    Opts.AddPath((*it)->getValue(Args), frontend::Angled, true,
1159                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), true);
1160
1161  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1162  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1163  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1164                                             OPT_iwithprefixbefore),
1165         ie = Args.filtered_end(); it != ie; ++it) {
1166    const Arg *A = *it;
1167    if (A->getOption().matches(OPT_iprefix))
1168      Prefix = A->getValue(Args);
1169    else if (A->getOption().matches(OPT_iwithprefix))
1170      Opts.AddPath(Prefix.str() + A->getValue(Args),
1171                   frontend::System, false, false, true);
1172    else
1173      Opts.AddPath(Prefix.str() + A->getValue(Args),
1174                   frontend::Angled, false, false, true);
1175  }
1176
1177  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1178         ie = Args.filtered_end(); it != ie; ++it)
1179    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, true);
1180  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1181         ie = Args.filtered_end(); it != ie; ++it)
1182    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, true);
1183  for (arg_iterator it = Args.filtered_begin(OPT_isystem, OPT_iwithsysroot),
1184         ie = Args.filtered_end(); it != ie; ++it)
1185    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1186                 (*it)->getOption().matches(OPT_iwithsysroot));
1187
1188  // FIXME: Need options for the various environment variables!
1189}
1190
1191static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1192                          Diagnostic &Diags) {
1193  // FIXME: Cleanup per-file based stuff.
1194
1195  // Set some properties which depend soley on the input kind; it would be nice
1196  // to move these to the language standard, and have the driver resolve the
1197  // input kind + language standard.
1198  if (IK == IK_Asm) {
1199    Opts.AsmPreprocessor = 1;
1200  } else if (IK == IK_ObjC ||
1201             IK == IK_ObjCXX ||
1202             IK == IK_PreprocessedObjC ||
1203             IK == IK_PreprocessedObjCXX) {
1204    Opts.ObjC1 = Opts.ObjC2 = 1;
1205  }
1206
1207  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1208  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1209    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1210#define LANGSTANDARD(id, name, desc, features) \
1211      .Case(name, LangStandard::lang_##id)
1212#include "clang/Frontend/LangStandards.def"
1213      .Default(LangStandard::lang_unspecified);
1214    if (LangStd == LangStandard::lang_unspecified)
1215      Diags.Report(diag::err_drv_invalid_value)
1216        << A->getAsString(Args) << A->getValue(Args);
1217  }
1218
1219  if (LangStd == LangStandard::lang_unspecified) {
1220    // Based on the base language, pick one.
1221    switch (IK) {
1222    case IK_None:
1223    case IK_AST:
1224    case IK_LLVM_IR:
1225      assert(0 && "Invalid input kind!");
1226    case IK_OpenCL:
1227      LangStd = LangStandard::lang_opencl;
1228      break;
1229    case IK_Asm:
1230    case IK_C:
1231    case IK_PreprocessedC:
1232    case IK_ObjC:
1233    case IK_PreprocessedObjC:
1234      LangStd = LangStandard::lang_gnu99;
1235      break;
1236    case IK_CXX:
1237    case IK_PreprocessedCXX:
1238    case IK_ObjCXX:
1239    case IK_PreprocessedObjCXX:
1240      LangStd = LangStandard::lang_gnucxx98;
1241      break;
1242    }
1243  }
1244
1245  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1246  Opts.BCPLComment = Std.hasBCPLComments();
1247  Opts.C99 = Std.isC99();
1248  Opts.CPlusPlus = Std.isCPlusPlus();
1249  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1250  Opts.Digraphs = Std.hasDigraphs();
1251  Opts.GNUMode = Std.isGNUMode();
1252  Opts.GNUInline = !Std.isC99();
1253  Opts.HexFloats = Std.hasHexFloats();
1254  Opts.ImplicitInt = Std.hasImplicitInt();
1255
1256  // OpenCL has some additional defaults.
1257  if (LangStd == LangStandard::lang_opencl) {
1258    Opts.OpenCL = 1;
1259    Opts.AltiVec = 1;
1260    Opts.CXXOperatorNames = 1;
1261    Opts.LaxVectorConversions = 1;
1262  }
1263
1264  // OpenCL and C++ both have bool, true, false keywords.
1265  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1266
1267  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1268  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1269  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1270  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1271  // name, as it doesn't seem a useful distinction.
1272  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1273                                  Opts.GNUMode);
1274
1275  if (Opts.CPlusPlus)
1276    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1277
1278  if (Args.hasArg(OPT_fobjc_gc_only))
1279    Opts.setGCMode(LangOptions::GCOnly);
1280  else if (Args.hasArg(OPT_fobjc_gc))
1281    Opts.setGCMode(LangOptions::HybridGC);
1282
1283  if (Args.hasArg(OPT_print_ivar_layout))
1284    Opts.ObjCGCBitmapPrint = 1;
1285  if (Args.hasArg(OPT_fno_constant_cfstrings))
1286    Opts.NoConstantCFStrings = 1;
1287
1288  if (Args.hasArg(OPT_faltivec))
1289    Opts.AltiVec = 1;
1290
1291  if (Args.hasArg(OPT_pthread))
1292    Opts.POSIXThreads = 1;
1293
1294  llvm::StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1295  if (Vis == "default")
1296    Opts.setVisibilityMode(LangOptions::Default);
1297  else if (Vis == "hidden")
1298    Opts.setVisibilityMode(LangOptions::Hidden);
1299  else if (Vis == "protected")
1300    Opts.setVisibilityMode(LangOptions::Protected);
1301  else
1302    Diags.Report(diag::err_drv_invalid_value)
1303      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1304
1305  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1306    Opts.InlineVisibilityHidden = 1;
1307
1308  if (Args.hasArg(OPT_ftrapv))
1309    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1310  else if (Args.hasArg(OPT_fwrapv))
1311    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1312
1313  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1314  // is specified, or -std is set to a conforming mode.
1315  Opts.Trigraphs = !Opts.GNUMode;
1316  if (Args.hasArg(OPT_trigraphs))
1317    Opts.Trigraphs = 1;
1318
1319  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1320                                   OPT_fno_dollars_in_identifiers,
1321                                   !Opts.AsmPreprocessor);
1322  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1323  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1324  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1325  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1326  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1327  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1328    Opts.LaxVectorConversions = 0;
1329  if (Args.hasArg(OPT_fno_threadsafe_statics))
1330    Opts.ThreadsafeStatics = 0;
1331  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1332  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1333  Opts.Blocks = Args.hasArg(OPT_fblocks);
1334  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1335  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1336  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1337  Opts.FormatExtensions = Args.hasArg(OPT_fformat_extensions);
1338  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1339  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1340  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1341  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1342  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1343  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1344  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1345                                               Diags);
1346  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1347  Opts.ObjCConstantStringClass =
1348    Args.getLastArgValue(OPT_fconstant_string_class);
1349  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1350  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1351  if (Opts.ObjCNonFragileABI2)
1352    Opts.ObjCNonFragileABI = true;
1353  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1354  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1355  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1356  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1357  Opts.Static = Args.hasArg(OPT_static_define);
1358  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1359  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1360  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1361  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1362  Opts.OptimizeSize = 0;
1363
1364  // FIXME: Eliminate this dependency.
1365  unsigned Opt =
1366    Args.hasArg(OPT_Os) ? 2 : Args.getLastArgIntValue(OPT_O, 0, Diags);
1367  Opts.Optimize = Opt != 0;
1368
1369  // This is the __NO_INLINE__ define, which just depends on things like the
1370  // optimization level and -fno-inline, not actually whether the backend has
1371  // inlining enabled.
1372  //
1373  // FIXME: This is affected by other options (-fno-inline).
1374  Opts.NoInline = !Opt;
1375
1376  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1377  switch (SSP) {
1378  default:
1379    Diags.Report(diag::err_drv_invalid_value)
1380      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1381    break;
1382  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1383  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1384  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1385  }
1386}
1387
1388static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1389                                  Diagnostic &Diags) {
1390  using namespace cc1options;
1391  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1392  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1393  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1394      Opts.TokenCache = A->getValue(Args);
1395  else
1396    Opts.TokenCache = Opts.ImplicitPTHInclude;
1397  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1398  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1399  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1400
1401  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1402    llvm::StringRef Value(A->getValue(Args));
1403    size_t Comma = Value.find(',');
1404    unsigned Bytes = 0;
1405    unsigned EndOfLine = 0;
1406
1407    if (Comma == llvm::StringRef::npos ||
1408        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1409        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1410      Diags.Report(diag::err_drv_preamble_format);
1411    else {
1412      Opts.PrecompiledPreambleBytes.first = Bytes;
1413      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1414    }
1415  }
1416
1417  // Add macros from the command line.
1418  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1419         ie = Args.filtered_end(); it != ie; ++it) {
1420    if ((*it)->getOption().matches(OPT_D))
1421      Opts.addMacroDef((*it)->getValue(Args));
1422    else
1423      Opts.addMacroUndef((*it)->getValue(Args));
1424  }
1425
1426  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1427
1428  // Add the ordered list of -includes.
1429  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1430                                             OPT_include_pth),
1431         ie = Args.filtered_end(); it != ie; ++it) {
1432    const Arg *A = *it;
1433    // PCH is handled specially, we need to extra the original include path.
1434    if (A->getOption().matches(OPT_include_pch)) {
1435      std::string OriginalFile =
1436        ASTReader::getOriginalSourceFile(A->getValue(Args), Diags);
1437      if (OriginalFile.empty())
1438        continue;
1439
1440      Opts.Includes.push_back(OriginalFile);
1441    } else
1442      Opts.Includes.push_back(A->getValue(Args));
1443  }
1444
1445  // Include 'altivec.h' if -faltivec option present
1446  if (Args.hasArg(OPT_faltivec))
1447    Opts.Includes.push_back("altivec.h");
1448
1449  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1450         ie = Args.filtered_end(); it != ie; ++it) {
1451    const Arg *A = *it;
1452    std::pair<llvm::StringRef,llvm::StringRef> Split =
1453      llvm::StringRef(A->getValue(Args)).split(';');
1454
1455    if (Split.second.empty()) {
1456      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
1457      continue;
1458    }
1459
1460    Opts.addRemappedFile(Split.first, Split.second);
1461  }
1462}
1463
1464static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1465                                        ArgList &Args) {
1466  using namespace cc1options;
1467  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1468  Opts.ShowComments = Args.hasArg(OPT_C);
1469  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1470  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1471  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1472  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1473}
1474
1475static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1476  using namespace cc1options;
1477  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
1478  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
1479  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
1480  Opts.Features = Args.getAllArgValues(OPT_target_feature);
1481  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
1482  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
1483
1484  // Use the host triple if unspecified.
1485  if (Opts.Triple.empty())
1486    Opts.Triple = llvm::sys::getHostTriple();
1487}
1488
1489//
1490
1491void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1492                                        const char **ArgBegin,
1493                                        const char **ArgEnd,
1494                                        Diagnostic &Diags) {
1495  // Parse the arguments.
1496  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1497  unsigned MissingArgIndex, MissingArgCount;
1498  llvm::OwningPtr<InputArgList> Args(
1499    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1500
1501  // Check for missing argument error.
1502  if (MissingArgCount)
1503    Diags.Report(diag::err_drv_missing_argument)
1504      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1505
1506  // Issue errors on unknown arguments.
1507  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1508         ie = Args->filtered_end(); it != ie; ++it)
1509    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
1510
1511  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1512  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1513  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1514  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1515  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1516  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1517  if (DashX != IK_AST && DashX != IK_LLVM_IR)
1518    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1519  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1520  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1521  ParseTargetArgs(Res.getTargetOpts(), *Args);
1522}
1523