CompilerInvocation.cpp revision 8235f9c9c8b3d1737d1c6bd57f7ba3f616b92392 
1//===--- CompilerInvocation.cpp -------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "clang/Frontend/CompilerInvocation.h"
11#include "clang/Basic/Diagnostic.h"
12#include "clang/Basic/Version.h"
13#include "clang/Basic/FileManager.h"
14#include "clang/Driver/Arg.h"
15#include "clang/Driver/ArgList.h"
16#include "clang/Driver/CC1Options.h"
17#include "clang/Driver/DriverDiagnostic.h"
18#include "clang/Driver/OptTable.h"
19#include "clang/Driver/Option.h"
20#include "clang/Frontend/CompilerInvocation.h"
21#include "clang/Frontend/LangStandard.h"
22#include "clang/Serialization/ASTReader.h"
23#include "llvm/ADT/OwningPtr.h"
24#include "llvm/ADT/SmallVector.h"
25#include "llvm/ADT/StringExtras.h"
26#include "llvm/ADT/StringSwitch.h"
27#include "llvm/ADT/Triple.h"
28#include "llvm/Support/ErrorHandling.h"
29#include "llvm/Support/Host.h"
30#include "llvm/Support/Path.h"
31using namespace clang;
32
33//===----------------------------------------------------------------------===//
34// Initialization.
35//===----------------------------------------------------------------------===//
36
37CompilerInvocationBase::CompilerInvocationBase()
38  : LangOpts(new LangOptions()) {}
39
40CompilerInvocationBase::CompilerInvocationBase(const CompilerInvocationBase &X)
41  : RefCountedBase<CompilerInvocation>(),
42    LangOpts(new LangOptions(*X.getLangOpts())) {}
43
44//===----------------------------------------------------------------------===//
45// Utility functions.
46//===----------------------------------------------------------------------===//
47
48static const char *getAnalysisStoreName(AnalysisStores Kind) {
49  switch (Kind) {
50  default:
51    llvm_unreachable("Unknown analysis store!");
52#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
53  case NAME##Model: return CMDFLAG;
54#include "clang/Frontend/Analyses.def"
55  }
56}
57
58static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
59  switch (Kind) {
60  default:
61    llvm_unreachable("Unknown analysis constraints!");
62#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
63  case NAME##Model: return CMDFLAG;
64#include "clang/Frontend/Analyses.def"
65  }
66}
67
68static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
69  switch (Kind) {
70  default:
71    llvm_unreachable("Unknown analysis client!");
72#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
73  case PD_##NAME: return CMDFLAG;
74#include "clang/Frontend/Analyses.def"
75  }
76}
77
78static const char *getAnalysisPurgeModeName(AnalysisPurgeMode Kind) {
79  switch (Kind) {
80  default:
81    llvm_unreachable("Unknown analysis client!");
82#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
83  case NAME: return CMDFLAG;
84#include "clang/Frontend/Analyses.def"
85  }
86}
87
88//===----------------------------------------------------------------------===//
89// Serialization (to args)
90//===----------------------------------------------------------------------===//
91
92static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
93                               std::vector<std::string> &Res) {
94  if (Opts.ShowCheckerHelp)
95    Res.push_back("-analyzer-checker-help");
96  if (Opts.AnalysisStoreOpt != RegionStoreModel) {
97    Res.push_back("-analyzer-store");
98    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
99  }
100  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
101    Res.push_back("-analyzer-constraints");
102    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
103  }
104  if (Opts.AnalysisDiagOpt != PD_HTML) {
105    Res.push_back("-analyzer-output");
106    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
107  }
108  if (Opts.AnalysisPurgeOpt != PurgeStmt) {
109    Res.push_back("-analyzer-purge");
110    Res.push_back(getAnalysisPurgeModeName(Opts.AnalysisPurgeOpt));
111  }
112  if (!Opts.AnalyzeSpecificFunction.empty()) {
113    Res.push_back("-analyze-function");
114    Res.push_back(Opts.AnalyzeSpecificFunction);
115  }
116  if (Opts.AnalyzeAll)
117    Res.push_back("-analyzer-opt-analyze-headers");
118  if (Opts.AnalyzerDisplayProgress)
119    Res.push_back("-analyzer-display-progress");
120  if (Opts.AnalyzeNestedBlocks)
121    Res.push_back("-analyzer-opt-analyze-nested-blocks");
122  if (Opts.EagerlyAssume)
123    Res.push_back("-analyzer-eagerly-assume");
124  if (Opts.TrimGraph)
125    Res.push_back("-trim-egraph");
126  if (Opts.VisualizeEGDot)
127    Res.push_back("-analyzer-viz-egraph-graphviz");
128  if (Opts.VisualizeEGUbi)
129    Res.push_back("-analyzer-viz-egraph-ubigraph");
130
131  for (unsigned i = 0, e = Opts.CheckersControlList.size(); i != e; ++i) {
132    const std::pair<std::string, bool> &opt = Opts.CheckersControlList[i];
133    if (opt.second)
134      Res.push_back("-analyzer-disable-checker");
135    else
136      Res.push_back("-analyzer-checker");
137    Res.push_back(opt.first);
138  }
139}
140
141static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
142                              std::vector<std::string> &Res) {
143  if (Opts.DebugInfo)
144    Res.push_back("-g");
145  if (Opts.DisableLLVMOpts)
146    Res.push_back("-disable-llvm-optzns");
147  if (Opts.DisableRedZone)
148    Res.push_back("-disable-red-zone");
149  if (Opts.DisableTailCalls)
150    Res.push_back("-mdisable-tail-calls");
151  if (!Opts.DebugCompilationDir.empty()) {
152    Res.push_back("-fdebug-compilation-dir");
153    Res.push_back(Opts.DebugCompilationDir);
154  }
155  if (!Opts.DwarfDebugFlags.empty()) {
156    Res.push_back("-dwarf-debug-flags");
157    Res.push_back(Opts.DwarfDebugFlags);
158  }
159  if (Opts.ObjCRuntimeHasARC)
160    Res.push_back("-fobjc-runtime-has-arc");
161  if (Opts.ObjCRuntimeHasTerminate)
162    Res.push_back("-fobjc-runtime-has-terminate");
163  if (Opts.EmitGcovArcs)
164    Res.push_back("-femit-coverage-data");
165  if (Opts.EmitGcovNotes)
166    Res.push_back("-femit-coverage-notes");
167  if (!Opts.MergeAllConstants)
168    Res.push_back("-fno-merge-all-constants");
169  if (Opts.NoCommon)
170    Res.push_back("-fno-common");
171  if (Opts.ForbidGuardVariables)
172    Res.push_back("-fforbid-guard-variables");
173  if (Opts.UseRegisterSizedBitfieldAccess)
174    Res.push_back("-fuse-register-sized-bitfield-access");
175  if (Opts.NoImplicitFloat)
176    Res.push_back("-no-implicit-float");
177  if (Opts.OmitLeafFramePointer)
178    Res.push_back("-momit-leaf-frame-pointer");
179  if (Opts.OptimizeSize) {
180    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
181    Opts.OptimizeSize == 1 ? Res.push_back("-Os") : Res.push_back("-Oz");
182  } else if (Opts.OptimizationLevel != 0)
183    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
184  if (!Opts.MainFileName.empty()) {
185    Res.push_back("-main-file-name");
186    Res.push_back(Opts.MainFileName);
187  }
188  if (Opts.NoInfsFPMath)
189    Res.push_back("-menable-no-infinities");
190  if (Opts.NoNaNsFPMath)
191    Res.push_back("-menable-no-nans");
192  // SimplifyLibCalls is only derived.
193  // TimePasses is only derived.
194  // UnitAtATime is unused.
195  // Inlining is only derived.
196
197  // UnrollLoops is derived, but also accepts an option, no
198  // harm in pushing it back here.
199  if (Opts.UnrollLoops)
200    Res.push_back("-funroll-loops");
201  if (Opts.DataSections)
202    Res.push_back("-fdata-sections");
203  if (Opts.FunctionSections)
204    Res.push_back("-ffunction-sections");
205  if (Opts.AsmVerbose)
206    Res.push_back("-masm-verbose");
207  if (!Opts.CodeModel.empty()) {
208    Res.push_back("-mcode-model");
209    Res.push_back(Opts.CodeModel);
210  }
211  if (Opts.CUDAIsDevice)
212    Res.push_back("-fcuda-is-device");
213  if (!Opts.CXAAtExit)
214    Res.push_back("-fno-use-cxa-atexit");
215  if (Opts.CXXCtorDtorAliases)
216    Res.push_back("-mconstructor-aliases");
217  if (Opts.ObjCAutoRefCountExceptions)
218    Res.push_back("-fobjc-arc-eh");
219  if (!Opts.DebugPass.empty()) {
220    Res.push_back("-mdebug-pass");
221    Res.push_back(Opts.DebugPass);
222  }
223  if (Opts.DisableFPElim)
224    Res.push_back("-mdisable-fp-elim");
225  if (!Opts.FloatABI.empty()) {
226    Res.push_back("-mfloat-abi");
227    Res.push_back(Opts.FloatABI);
228  }
229  if (!Opts.LimitFloatPrecision.empty()) {
230    Res.push_back("-mlimit-float-precision");
231    Res.push_back(Opts.LimitFloatPrecision);
232  }
233  if (Opts.NoZeroInitializedInBSS)
234    Res.push_back("-mno-zero-initialized-bss");
235  switch (Opts.getObjCDispatchMethod()) {
236  case CodeGenOptions::Legacy:
237    break;
238  case CodeGenOptions::Mixed:
239    Res.push_back("-fobjc-dispatch-method=mixed");
240    break;
241  case CodeGenOptions::NonLegacy:
242    Res.push_back("-fobjc-dispatch-method=non-legacy");
243    break;
244  }
245  if (Opts.NumRegisterParameters) {
246    Res.push_back("-mregparm");
247    Res.push_back(llvm::utostr(Opts.NumRegisterParameters));
248  }
249  if (Opts.NoGlobalMerge)
250    Res.push_back("-mno-global-merge");
251  if (Opts.NoExecStack)
252    Res.push_back("-mnoexecstack");
253  if (Opts.RelaxAll)
254    Res.push_back("-mrelax-all");
255  if (Opts.SaveTempLabels)
256    Res.push_back("-msave-temp-labels");
257  if (Opts.NoDwarf2CFIAsm)
258    Res.push_back("-fno-dwarf2-cfi-asm");
259  if (Opts.NoDwarfDirectoryAsm)
260    Res.push_back("-fno-dwarf-directory-asm");
261  if (Opts.SoftFloat)
262    Res.push_back("-msoft-float");
263  if (Opts.UnwindTables)
264    Res.push_back("-munwind-tables");
265  if (Opts.RelocationModel != "pic") {
266    Res.push_back("-mrelocation-model");
267    Res.push_back(Opts.RelocationModel);
268  }
269  if (!Opts.VerifyModule)
270    Res.push_back("-disable-llvm-verifier");
271  for (unsigned i = 0, e = Opts.BackendOptions.size(); i != e; ++i) {
272    Res.push_back("-backend-option");
273    Res.push_back(Opts.BackendOptions[i]);
274  }
275}
276
277static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
278                                       std::vector<std::string> &Res) {
279  if (Opts.IncludeSystemHeaders)
280    Res.push_back("-sys-header-deps");
281  if (Opts.ShowHeaderIncludes)
282    Res.push_back("-H");
283  if (!Opts.HeaderIncludeOutputFile.empty()) {
284    Res.push_back("-header-include-file");
285    Res.push_back(Opts.HeaderIncludeOutputFile);
286  }
287  if (Opts.UsePhonyTargets)
288    Res.push_back("-MP");
289  if (!Opts.OutputFile.empty()) {
290    Res.push_back("-dependency-file");
291    Res.push_back(Opts.OutputFile);
292  }
293  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
294    Res.push_back("-MT");
295    Res.push_back(Opts.Targets[i]);
296  }
297}
298
299static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
300                                 std::vector<std::string> &Res) {
301  if (Opts.IgnoreWarnings)
302    Res.push_back("-w");
303  if (Opts.NoRewriteMacros)
304    Res.push_back("-Wno-rewrite-macros");
305  if (Opts.Pedantic)
306    Res.push_back("-pedantic");
307  if (Opts.PedanticErrors)
308    Res.push_back("-pedantic-errors");
309  if (!Opts.ShowColumn)
310    Res.push_back("-fno-show-column");
311  if (!Opts.ShowLocation)
312    Res.push_back("-fno-show-source-location");
313  if (!Opts.ShowCarets)
314    Res.push_back("-fno-caret-diagnostics");
315  if (!Opts.ShowFixits)
316    Res.push_back("-fno-diagnostics-fixit-info");
317  if (Opts.ShowSourceRanges)
318    Res.push_back("-fdiagnostics-print-source-range-info");
319  if (Opts.ShowParseableFixits)
320    Res.push_back("-fdiagnostics-parseable-fixits");
321  if (Opts.ShowColors)
322    Res.push_back("-fcolor-diagnostics");
323  if (Opts.VerifyDiagnostics)
324    Res.push_back("-verify");
325  if (Opts.ShowOptionNames)
326    Res.push_back("-fdiagnostics-show-option");
327  if (Opts.ShowCategories == 1)
328    Res.push_back("-fdiagnostics-show-category=id");
329  else if (Opts.ShowCategories == 2)
330    Res.push_back("-fdiagnostics-show-category=name");
331  switch (Opts.Format) {
332  case DiagnosticOptions::Clang:
333    Res.push_back("-fdiagnostics-format=clang"); break;
334  case DiagnosticOptions::Msvc:
335    Res.push_back("-fdiagnostics-format=msvc");  break;
336  case DiagnosticOptions::Vi:
337    Res.push_back("-fdiagnostics-format=vi");    break;
338  }
339  if (Opts.ErrorLimit) {
340    Res.push_back("-ferror-limit");
341    Res.push_back(llvm::utostr(Opts.ErrorLimit));
342  }
343  if (!Opts.DiagnosticLogFile.empty()) {
344    Res.push_back("-diagnostic-log-file");
345    Res.push_back(Opts.DiagnosticLogFile);
346  }
347  if (Opts.MacroBacktraceLimit
348                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
349    Res.push_back("-fmacro-backtrace-limit");
350    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
351  }
352  if (Opts.TemplateBacktraceLimit
353                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
354    Res.push_back("-ftemplate-backtrace-limit");
355    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
356  }
357  if (Opts.ConstexprBacktraceLimit
358                        != DiagnosticOptions::DefaultConstexprBacktraceLimit) {
359    Res.push_back("-fconstexpr-backtrace-limit");
360    Res.push_back(llvm::utostr(Opts.ConstexprBacktraceLimit));
361  }
362
363  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
364    Res.push_back("-ftabstop");
365    Res.push_back(llvm::utostr(Opts.TabStop));
366  }
367  if (Opts.MessageLength) {
368    Res.push_back("-fmessage-length");
369    Res.push_back(llvm::utostr(Opts.MessageLength));
370  }
371  if (!Opts.DumpBuildInformation.empty()) {
372    Res.push_back("-dump-build-information");
373    Res.push_back(Opts.DumpBuildInformation);
374  }
375  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
376    Res.push_back("-W" + Opts.Warnings[i]);
377}
378
379static const char *getInputKindName(InputKind Kind) {
380  switch (Kind) {
381  case IK_None:              break;
382  case IK_AST:               return "ast";
383  case IK_Asm:               return "assembler-with-cpp";
384  case IK_C:                 return "c";
385  case IK_CXX:               return "c++";
386  case IK_LLVM_IR:           return "ir";
387  case IK_ObjC:              return "objective-c";
388  case IK_ObjCXX:            return "objective-c++";
389  case IK_OpenCL:            return "cl";
390  case IK_CUDA:              return "cuda";
391  case IK_PreprocessedC:     return "cpp-output";
392  case IK_PreprocessedCXX:   return "c++-cpp-output";
393  case IK_PreprocessedObjC:  return "objective-c-cpp-output";
394  case IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
395  }
396
397  llvm_unreachable("Unexpected language kind!");
398}
399
400static const char *getActionName(frontend::ActionKind Kind) {
401  switch (Kind) {
402  case frontend::PluginAction:
403    llvm_unreachable("Invalid kind!");
404
405  case frontend::ASTDump:                return "-ast-dump";
406  case frontend::ASTDumpXML:             return "-ast-dump-xml";
407  case frontend::ASTPrint:               return "-ast-print";
408  case frontend::ASTView:                return "-ast-view";
409  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
410  case frontend::DumpTokens:             return "-dump-tokens";
411  case frontend::EmitAssembly:           return "-S";
412  case frontend::EmitBC:                 return "-emit-llvm-bc";
413  case frontend::EmitHTML:               return "-emit-html";
414  case frontend::EmitLLVM:               return "-emit-llvm";
415  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
416  case frontend::EmitCodeGenOnly:        return "-emit-codegen-only";
417  case frontend::EmitObj:                return "-emit-obj";
418  case frontend::FixIt:                  return "-fixit";
419  case frontend::GenerateModule:         return "-emit-module";
420  case frontend::GeneratePCH:            return "-emit-pch";
421  case frontend::GeneratePTH:            return "-emit-pth";
422  case frontend::InitOnly:               return "-init-only";
423  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
424  case frontend::PrintDeclContext:       return "-print-decl-contexts";
425  case frontend::PrintPreamble:          return "-print-preamble";
426  case frontend::PrintPreprocessedInput: return "-E";
427  case frontend::RewriteMacros:          return "-rewrite-macros";
428  case frontend::RewriteObjC:            return "-rewrite-objc";
429  case frontend::RewriteTest:            return "-rewrite-test";
430  case frontend::RunAnalysis:            return "-analyze";
431  case frontend::RunPreprocessorOnly:    return "-Eonly";
432  }
433
434  llvm_unreachable("Unexpected language kind!");
435}
436
437static void FileSystemOptsToArgs(const FileSystemOptions &Opts,
438                                 std::vector<std::string> &Res) {
439  if (!Opts.WorkingDir.empty()) {
440    Res.push_back("-working-directory");
441    Res.push_back(Opts.WorkingDir);
442  }
443}
444
445static void FrontendOptsToArgs(const FrontendOptions &Opts,
446                               std::vector<std::string> &Res) {
447  if (Opts.DisableFree)
448    Res.push_back("-disable-free");
449  if (Opts.RelocatablePCH)
450    Res.push_back("-relocatable-pch");
451  if (Opts.ShowHelp)
452    Res.push_back("-help");
453  if (Opts.ShowMacrosInCodeCompletion)
454    Res.push_back("-code-completion-macros");
455  if (Opts.ShowCodePatternsInCodeCompletion)
456    Res.push_back("-code-completion-patterns");
457  if (!Opts.ShowGlobalSymbolsInCodeCompletion)
458    Res.push_back("-no-code-completion-globals");
459  if (Opts.ShowStats)
460    Res.push_back("-print-stats");
461  if (Opts.ShowTimers)
462    Res.push_back("-ftime-report");
463  if (Opts.ShowVersion)
464    Res.push_back("-version");
465  if (Opts.FixWhatYouCan)
466    Res.push_back("-fix-what-you-can");
467  if (Opts.FixOnlyWarnings)
468    Res.push_back("-fix-only-warnings");
469  if (Opts.FixAndRecompile)
470    Res.push_back("-fixit-recompile");
471  if (Opts.FixToTemporaries)
472    Res.push_back("-fixit-to-temporary");
473  switch (Opts.ARCMTAction) {
474  case FrontendOptions::ARCMT_None:
475    break;
476  case FrontendOptions::ARCMT_Check:
477    Res.push_back("-arcmt-check");
478    break;
479  case FrontendOptions::ARCMT_Modify:
480    Res.push_back("-arcmt-modify");
481    break;
482  case FrontendOptions::ARCMT_Migrate:
483    Res.push_back("-arcmt-migrate");
484    break;
485  }
486  if (!Opts.ARCMTMigrateDir.empty()) {
487    Res.push_back("-arcmt-migrate-directory");
488    Res.push_back(Opts.ARCMTMigrateDir);
489  }
490  if (!Opts.ARCMTMigrateReportOut.empty()) {
491    Res.push_back("-arcmt-migrate-report-output");
492    Res.push_back(Opts.ARCMTMigrateReportOut);
493  }
494  if (Opts.ARCMTMigrateEmitARCErrors)
495    Res.push_back("-arcmt-migrate-emit-errors");
496
497  bool NeedLang = false;
498  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
499    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].File) !=
500        Opts.Inputs[i].Kind)
501      NeedLang = true;
502  if (NeedLang) {
503    Res.push_back("-x");
504    Res.push_back(getInputKindName(Opts.Inputs[0].Kind));
505  }
506  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
507    assert((!NeedLang || Opts.Inputs[i].Kind == Opts.Inputs[0].Kind) &&
508           "Unable to represent this input vector!");
509    Res.push_back(Opts.Inputs[i].File);
510  }
511
512  if (!Opts.OutputFile.empty()) {
513    Res.push_back("-o");
514    Res.push_back(Opts.OutputFile);
515  }
516  if (!Opts.CodeCompletionAt.FileName.empty()) {
517    Res.push_back("-code-completion-at");
518    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
519                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
520                  llvm::utostr(Opts.CodeCompletionAt.Column));
521  }
522  if (Opts.ProgramAction != frontend::PluginAction)
523    Res.push_back(getActionName(Opts.ProgramAction));
524  if (!Opts.ActionName.empty()) {
525    Res.push_back("-plugin");
526    Res.push_back(Opts.ActionName);
527    for(unsigned i = 0, e = Opts.PluginArgs.size(); i != e; ++i) {
528      Res.push_back("-plugin-arg-" + Opts.ActionName);
529      Res.push_back(Opts.PluginArgs[i]);
530    }
531  }
532  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
533    Res.push_back("-load");
534    Res.push_back(Opts.Plugins[i]);
535  }
536  for (unsigned i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
537    Res.push_back("-add-plugin");
538    Res.push_back(Opts.AddPluginActions[i]);
539    for(unsigned ai = 0, ae = Opts.AddPluginArgs.size(); ai != ae; ++ai) {
540      Res.push_back("-plugin-arg-" + Opts.AddPluginActions[i]);
541      Res.push_back(Opts.AddPluginArgs[i][ai]);
542    }
543  }
544  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
545    Res.push_back("-ast-merge");
546    Res.push_back(Opts.ASTMergeFiles[i]);
547  }
548  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
549    Res.push_back("-mllvm");
550    Res.push_back(Opts.LLVMArgs[i]);
551  }
552  if (!Opts.OverrideRecordLayoutsFile.empty())
553    Res.push_back("-foverride-record-layout=" + Opts.OverrideRecordLayoutsFile);
554}
555
556static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
557                                   std::vector<std::string> &Res) {
558  if (Opts.Sysroot != "/") {
559    Res.push_back("-isysroot");
560    Res.push_back(Opts.Sysroot);
561  }
562
563  /// User specified include entries.
564  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
565    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
566    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
567      llvm::report_fatal_error("Invalid option set!");
568    if (E.IsUserSupplied) {
569      switch (E.Group) {
570      case frontend::After:
571        Res.push_back("-idirafter");
572        break;
573
574      case frontend::Quoted:
575        Res.push_back("-iquote");
576        break;
577
578      case frontend::System:
579        Res.push_back("-isystem");
580        break;
581
582      case frontend::IndexHeaderMap:
583        Res.push_back("-index-header-map");
584        Res.push_back(E.IsFramework? "-F" : "-I");
585        break;
586
587      case frontend::CSystem:
588        Res.push_back("-c-isystem");
589        break;
590
591      case frontend::CXXSystem:
592        Res.push_back("-cxx-isystem");
593        break;
594
595      case frontend::ObjCSystem:
596        Res.push_back("-objc-isystem");
597        break;
598
599      case frontend::ObjCXXSystem:
600        Res.push_back("-objcxx-isystem");
601        break;
602
603      case frontend::Angled:
604        Res.push_back(E.IsFramework ? "-F" : "-I");
605        break;
606      }
607    } else {
608      if (E.IsInternal) {
609        assert(E.Group == frontend::System && "Unexpected header search group");
610        if (E.ImplicitExternC)
611          Res.push_back("-internal-externc-isystem");
612        else
613          Res.push_back("-internal-isystem");
614      } else {
615        if (E.Group != frontend::Angled && E.Group != frontend::System)
616          llvm::report_fatal_error("Invalid option set!");
617        Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
618                      "-iwithprefix");
619      }
620    }
621    Res.push_back(E.Path);
622  }
623
624  if (!Opts.ResourceDir.empty()) {
625    Res.push_back("-resource-dir");
626    Res.push_back(Opts.ResourceDir);
627  }
628  if (!Opts.ModuleCachePath.empty()) {
629    Res.push_back("-fmodule-cache-path");
630    Res.push_back(Opts.ModuleCachePath);
631  }
632  if (!Opts.UseStandardSystemIncludes)
633    Res.push_back("-nostdsysteminc");
634  if (!Opts.UseStandardCXXIncludes)
635    Res.push_back("-nostdinc++");
636  if (Opts.UseLibcxx)
637    Res.push_back("-stdlib=libc++");
638  if (Opts.Verbose)
639    Res.push_back("-v");
640}
641
642static void LangOptsToArgs(const LangOptions &Opts,
643                           std::vector<std::string> &Res) {
644  LangOptions DefaultLangOpts;
645
646  // FIXME: Need to set -std to get all the implicit options.
647
648  // FIXME: We want to only pass options relative to the defaults, which
649  // requires constructing a target. :(
650  //
651  // It would be better to push the all target specific choices into the driver,
652  // so that everything below that was more uniform.
653
654  if (Opts.Trigraphs)
655    Res.push_back("-trigraphs");
656  // Implicit based on the input kind:
657  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
658  // Implicit based on the input language standard:
659  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
660  if (Opts.DollarIdents)
661    Res.push_back("-fdollars-in-identifiers");
662  if (Opts.GNUMode && !Opts.GNUKeywords)
663    Res.push_back("-fno-gnu-keywords");
664  if (!Opts.GNUMode && Opts.GNUKeywords)
665    Res.push_back("-fgnu-keywords");
666  if (Opts.MicrosoftExt)
667    Res.push_back("-fms-extensions");
668  if (Opts.MicrosoftMode)
669    Res.push_back("-fms-compatibility");
670  if (Opts.MSCVersion != 0)
671    Res.push_back("-fmsc-version=" + llvm::utostr(Opts.MSCVersion));
672  if (Opts.Borland)
673    Res.push_back("-fborland-extensions");
674  if (!Opts.ObjCNonFragileABI)
675    Res.push_back("-fobjc-fragile-abi");
676  if (Opts.ObjCDefaultSynthProperties)
677    Res.push_back("-fobjc-default-synthesize-properties");
678  // NoInline is implicit.
679  if (!Opts.CXXOperatorNames)
680    Res.push_back("-fno-operator-names");
681  if (Opts.PascalStrings)
682    Res.push_back("-fpascal-strings");
683  if (Opts.CatchUndefined)
684    Res.push_back("-fcatch-undefined-behavior");
685  if (Opts.AddressSanitizer)
686    Res.push_back("-faddress-sanitizer");
687  if (Opts.ThreadSanitizer)
688    Res.push_back("-fthread-sanitizer");
689  if (Opts.WritableStrings)
690    Res.push_back("-fwritable-strings");
691  if (Opts.ConstStrings)
692    Res.push_back("-fconst-strings");
693  if (!Opts.LaxVectorConversions)
694    Res.push_back("-fno-lax-vector-conversions");
695  if (Opts.AltiVec)
696    Res.push_back("-faltivec");
697  if (Opts.Exceptions)
698    Res.push_back("-fexceptions");
699  if (Opts.ObjCExceptions)
700    Res.push_back("-fobjc-exceptions");
701  if (Opts.CXXExceptions)
702    Res.push_back("-fcxx-exceptions");
703  if (Opts.SjLjExceptions)
704    Res.push_back("-fsjlj-exceptions");
705  if (Opts.TraditionalCPP)
706    Res.push_back("-traditional-cpp");
707  if (!Opts.RTTI)
708    Res.push_back("-fno-rtti");
709  if (Opts.MSBitfields)
710    Res.push_back("-mms-bitfields");
711  if (!Opts.NeXTRuntime)
712    Res.push_back("-fgnu-runtime");
713  if (Opts.Freestanding)
714    Res.push_back("-ffreestanding");
715  if (Opts.NoBuiltin)
716    Res.push_back("-fno-builtin");
717  if (!Opts.AssumeSaneOperatorNew)
718    Res.push_back("-fno-assume-sane-operator-new");
719  if (!Opts.ThreadsafeStatics)
720    Res.push_back("-fno-threadsafe-statics");
721  if (Opts.POSIXThreads)
722    Res.push_back("-pthread");
723  if (Opts.Blocks)
724    Res.push_back("-fblocks");
725  if (Opts.BlocksRuntimeOptional)
726    Res.push_back("-fblocks-runtime-optional");
727  if (Opts.Modules)
728    Res.push_back("-fmodules");
729  if (Opts.EmitAllDecls)
730    Res.push_back("-femit-all-decls");
731  if (Opts.MathErrno)
732    Res.push_back("-fmath-errno");
733  switch (Opts.getSignedOverflowBehavior()) {
734  case LangOptions::SOB_Undefined: break;
735  case LangOptions::SOB_Defined:   Res.push_back("-fwrapv"); break;
736  case LangOptions::SOB_Trapping:
737    Res.push_back("-ftrapv");
738    if (!Opts.OverflowHandler.empty()) {
739      Res.push_back("-ftrapv-handler");
740      Res.push_back(Opts.OverflowHandler);
741    }
742    break;
743  }
744  if (Opts.HeinousExtensions)
745    Res.push_back("-fheinous-gnu-extensions");
746  // Optimize is implicit.
747  // OptimizeSize is implicit.
748  if (Opts.FastMath)
749    Res.push_back("-ffast-math");
750  if (Opts.Static)
751    Res.push_back("-static-define");
752  if (Opts.DumpRecordLayoutsSimple)
753    Res.push_back("-fdump-record-layouts-simple");
754  else if (Opts.DumpRecordLayouts)
755    Res.push_back("-fdump-record-layouts");
756  if (Opts.DumpVTableLayouts)
757    Res.push_back("-fdump-vtable-layouts");
758  if (Opts.NoBitFieldTypeAlign)
759    Res.push_back("-fno-bitfield-type-alignment");
760  if (Opts.PICLevel) {
761    Res.push_back("-pic-level");
762    Res.push_back(llvm::utostr(Opts.PICLevel));
763  }
764  if (Opts.ObjCGCBitmapPrint)
765    Res.push_back("-print-ivar-layout");
766  if (Opts.NoConstantCFStrings)
767    Res.push_back("-fno-constant-cfstrings");
768  if (!Opts.AccessControl)
769    Res.push_back("-fno-access-control");
770  if (!Opts.CharIsSigned)
771    Res.push_back("-fno-signed-char");
772  if (Opts.ShortWChar)
773    Res.push_back("-fshort-wchar");
774  if (!Opts.ElideConstructors)
775    Res.push_back("-fno-elide-constructors");
776  if (Opts.getGC() != LangOptions::NonGC) {
777    if (Opts.getGC() == LangOptions::HybridGC) {
778      Res.push_back("-fobjc-gc");
779    } else {
780      assert(Opts.getGC() == LangOptions::GCOnly && "Invalid GC mode!");
781      Res.push_back("-fobjc-gc-only");
782    }
783  }
784  if (Opts.ObjCAutoRefCount)
785    Res.push_back("-fobjc-arc");
786  if (Opts.ObjCRuntimeHasWeak)
787    Res.push_back("-fobjc-runtime-has-weak");
788  if (!Opts.ObjCInferRelatedResultType)
789    Res.push_back("-fno-objc-infer-related-result-type");
790
791  if (Opts.AppleKext)
792    Res.push_back("-fapple-kext");
793
794  if (Opts.getVisibilityMode() != DefaultVisibility) {
795    Res.push_back("-fvisibility");
796    if (Opts.getVisibilityMode() == HiddenVisibility) {
797      Res.push_back("hidden");
798    } else {
799      assert(Opts.getVisibilityMode() == ProtectedVisibility &&
800             "Invalid visibility!");
801      Res.push_back("protected");
802    }
803  }
804  if (Opts.InlineVisibilityHidden)
805    Res.push_back("-fvisibility-inlines-hidden");
806
807  if (Opts.getStackProtector() != 0) {
808    Res.push_back("-stack-protector");
809    Res.push_back(llvm::utostr(Opts.getStackProtector()));
810  }
811  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
812    Res.push_back("-ftemplate-depth");
813    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
814  }
815  if (Opts.ConstexprCallDepth != DefaultLangOpts.ConstexprCallDepth) {
816    Res.push_back("-fconstexpr-depth");
817    Res.push_back(llvm::utostr(Opts.ConstexprCallDepth));
818  }
819  if (!Opts.ObjCConstantStringClass.empty()) {
820    Res.push_back("-fconstant-string-class");
821    Res.push_back(Opts.ObjCConstantStringClass);
822  }
823  if (Opts.FakeAddressSpaceMap)
824    Res.push_back("-ffake-address-space-map");
825  if (Opts.ParseUnknownAnytype)
826    Res.push_back("-funknown-anytype");
827  if (Opts.DebuggerSupport)
828    Res.push_back("-fdebugger-support");
829  if (Opts.DebuggerCastResultToId)
830    Res.push_back("-fdebugger-cast-result-to-id");
831  if (Opts.DelayedTemplateParsing)
832    Res.push_back("-fdelayed-template-parsing");
833  if (Opts.Deprecated)
834    Res.push_back("-fdeprecated-macro");
835  if (Opts.ApplePragmaPack)
836    Res.push_back("-fapple-pragma-pack");
837  if (!Opts.CurrentModule.empty())
838    Res.push_back("-fmodule-name=" + Opts.CurrentModule);
839}
840
841static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
842                                   std::vector<std::string> &Res) {
843  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
844    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
845                  Opts.Macros[i].first);
846  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
847    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
848    Res.push_back("-include");
849    Res.push_back(Opts.Includes[i]);
850  }
851  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
852    Res.push_back("-imacros");
853    Res.push_back(Opts.MacroIncludes[i]);
854  }
855  if (!Opts.UsePredefines)
856    Res.push_back("-undef");
857  if (Opts.DetailedRecord)
858    Res.push_back("-detailed-preprocessing-record");
859  if (!Opts.ImplicitPCHInclude.empty()) {
860    Res.push_back("-include-pch");
861    Res.push_back(Opts.ImplicitPCHInclude);
862  }
863  if (!Opts.ImplicitPTHInclude.empty()) {
864    Res.push_back("-include-pth");
865    Res.push_back(Opts.ImplicitPTHInclude);
866  }
867  if (!Opts.TokenCache.empty()) {
868    if (Opts.ImplicitPTHInclude.empty()) {
869      Res.push_back("-token-cache");
870      Res.push_back(Opts.TokenCache);
871    } else
872      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
873             "Unsupported option combination!");
874  }
875  for (unsigned i = 0, e = Opts.ChainedIncludes.size(); i != e; ++i) {
876    Res.push_back("-chain-include");
877    Res.push_back(Opts.ChainedIncludes[i]);
878  }
879  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
880    Res.push_back("-remap-file");
881    Res.push_back(Opts.RemappedFiles[i].first + ";" +
882                  Opts.RemappedFiles[i].second);
883  }
884}
885
886static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
887                                         std::vector<std::string> &Res) {
888  if (!Opts.ShowCPP && !Opts.ShowMacros)
889    llvm::report_fatal_error("Invalid option combination!");
890
891  if (Opts.ShowCPP && Opts.ShowMacros)
892    Res.push_back("-dD");
893  else if (!Opts.ShowCPP && Opts.ShowMacros)
894    Res.push_back("-dM");
895
896  if (!Opts.ShowLineMarkers)
897    Res.push_back("-P");
898  if (Opts.ShowComments)
899    Res.push_back("-C");
900  if (Opts.ShowMacroComments)
901    Res.push_back("-CC");
902}
903
904static void TargetOptsToArgs(const TargetOptions &Opts,
905                             std::vector<std::string> &Res) {
906  Res.push_back("-triple");
907  Res.push_back(Opts.Triple);
908  if (!Opts.CPU.empty()) {
909    Res.push_back("-target-cpu");
910    Res.push_back(Opts.CPU);
911  }
912  if (!Opts.ABI.empty()) {
913    Res.push_back("-target-abi");
914    Res.push_back(Opts.ABI);
915  }
916  if (!Opts.LinkerVersion.empty()) {
917    Res.push_back("-target-linker-version");
918    Res.push_back(Opts.LinkerVersion);
919  }
920  if (!Opts.CXXABI.empty()) {
921    Res.push_back("-cxx-abi");
922    Res.push_back(Opts.CXXABI);
923  }
924  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
925    Res.push_back("-target-feature");
926    Res.push_back(Opts.Features[i]);
927  }
928}
929
930void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
931  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
932  CodeGenOptsToArgs(getCodeGenOpts(), Res);
933  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
934  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
935  FileSystemOptsToArgs(getFileSystemOpts(), Res);
936  FrontendOptsToArgs(getFrontendOpts(), Res);
937  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
938  LangOptsToArgs(*getLangOpts(), Res);
939  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
940  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
941  TargetOptsToArgs(getTargetOpts(), Res);
942}
943
944//===----------------------------------------------------------------------===//
945// Deserialization (to args)
946//===----------------------------------------------------------------------===//
947
948using namespace clang::driver;
949using namespace clang::driver::cc1options;
950
951//
952
953static unsigned getOptimizationLevel(ArgList &Args, InputKind IK,
954                                     DiagnosticsEngine &Diags) {
955  unsigned DefaultOpt = 0;
956  if (IK == IK_OpenCL && !Args.hasArg(OPT_cl_opt_disable))
957    DefaultOpt = 2;
958  // -Os/-Oz implies -O2
959  return (Args.hasArg(OPT_Os) || Args.hasArg (OPT_Oz)) ? 2 :
960    Args.getLastArgIntValue(OPT_O, DefaultOpt, Diags);
961}
962
963static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
964                              DiagnosticsEngine &Diags) {
965  using namespace cc1options;
966  bool Success = true;
967  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
968    StringRef Name = A->getValue(Args);
969    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
970#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
971      .Case(CMDFLAG, NAME##Model)
972#include "clang/Frontend/Analyses.def"
973      .Default(NumStores);
974    if (Value == NumStores) {
975      Diags.Report(diag::err_drv_invalid_value)
976        << A->getAsString(Args) << Name;
977      Success = false;
978    } else {
979      Opts.AnalysisStoreOpt = Value;
980    }
981  }
982
983  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
984    StringRef Name = A->getValue(Args);
985    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
986#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
987      .Case(CMDFLAG, NAME##Model)
988#include "clang/Frontend/Analyses.def"
989      .Default(NumConstraints);
990    if (Value == NumConstraints) {
991      Diags.Report(diag::err_drv_invalid_value)
992        << A->getAsString(Args) << Name;
993      Success = false;
994    } else {
995      Opts.AnalysisConstraintsOpt = Value;
996    }
997  }
998
999  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
1000    StringRef Name = A->getValue(Args);
1001    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
1002#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
1003      .Case(CMDFLAG, PD_##NAME)
1004#include "clang/Frontend/Analyses.def"
1005      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
1006    if (Value == NUM_ANALYSIS_DIAG_CLIENTS) {
1007      Diags.Report(diag::err_drv_invalid_value)
1008        << A->getAsString(Args) << Name;
1009      Success = false;
1010    } else {
1011      Opts.AnalysisDiagOpt = Value;
1012    }
1013  }
1014
1015  if (Arg *A = Args.getLastArg(OPT_analyzer_purge)) {
1016    StringRef Name = A->getValue(Args);
1017    AnalysisPurgeMode Value = llvm::StringSwitch<AnalysisPurgeMode>(Name)
1018#define ANALYSIS_PURGE(NAME, CMDFLAG, DESC) \
1019      .Case(CMDFLAG, NAME)
1020#include "clang/Frontend/Analyses.def"
1021      .Default(NumPurgeModes);
1022    if (Value == NumPurgeModes) {
1023      Diags.Report(diag::err_drv_invalid_value)
1024        << A->getAsString(Args) << Name;
1025      Success = false;
1026    } else {
1027      Opts.AnalysisPurgeOpt = Value;
1028    }
1029  }
1030
1031  Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
1032  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
1033  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
1034  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
1035  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
1036  Opts.AnalyzeNestedBlocks =
1037    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
1038  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
1039  Opts.AnalyzeSpecificFunction = Args.getLastArgValue(OPT_analyze_function);
1040  Opts.UnoptimizedCFG = Args.hasArg(OPT_analysis_UnoptimizedCFG);
1041  Opts.CFGAddImplicitDtors = Args.hasArg(OPT_analysis_CFGAddImplicitDtors);
1042  Opts.CFGAddInitializers = Args.hasArg(OPT_analysis_CFGAddInitializers);
1043  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
1044  Opts.MaxNodes = Args.getLastArgIntValue(OPT_analyzer_max_nodes, 150000,Diags);
1045  Opts.MaxLoop = Args.getLastArgIntValue(OPT_analyzer_max_loop, 4, Diags);
1046  Opts.EagerlyTrimEGraph = !Args.hasArg(OPT_analyzer_no_eagerly_trim_egraph);
1047  if (Args.hasArg(OPT_analyzer_inline_call))
1048    Opts.InlineCall = 1;
1049  Opts.PrintStats = Args.hasArg(OPT_analyzer_stats);
1050  Opts.InlineMaxStackDepth =
1051    Args.getLastArgIntValue(OPT_analyzer_inline_max_stack_depth,
1052                            Opts.InlineMaxStackDepth, Diags);
1053  Opts.InlineMaxFunctionSize =
1054    Args.getLastArgIntValue(OPT_analyzer_inline_max_function_size,
1055                            Opts.InlineMaxFunctionSize, Diags);
1056
1057  Opts.CheckersControlList.clear();
1058  for (arg_iterator it = Args.filtered_begin(OPT_analyzer_checker,
1059                                             OPT_analyzer_disable_checker),
1060         ie = Args.filtered_end(); it != ie; ++it) {
1061    const Arg *A = *it;
1062    A->claim();
1063    bool enable = (A->getOption().getID() == OPT_analyzer_checker);
1064    // We can have a list of comma separated checker names, e.g:
1065    // '-analyzer-checker=cocoa,unix'
1066    StringRef checkerList = A->getValue(Args);
1067    SmallVector<StringRef, 4> checkers;
1068    checkerList.split(checkers, ",");
1069    for (unsigned i = 0, e = checkers.size(); i != e; ++i)
1070      Opts.CheckersControlList.push_back(std::make_pair(checkers[i], enable));
1071  }
1072
1073  return Success;
1074}
1075
1076static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
1077  Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
1078  Opts.NoFinalizeRemoval = Args.hasArg(OPT_migrator_no_finalize_removal);
1079  return true;
1080}
1081
1082static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
1083                             DiagnosticsEngine &Diags) {
1084  using namespace cc1options;
1085  bool Success = true;
1086
1087  unsigned OptLevel = getOptimizationLevel(Args, IK, Diags);
1088  if (OptLevel > 3) {
1089    Diags.Report(diag::err_drv_invalid_value)
1090      << Args.getLastArg(OPT_O)->getAsString(Args) << OptLevel;
1091    OptLevel = 3;
1092    Success = false;
1093  }
1094  Opts.OptimizationLevel = OptLevel;
1095
1096  // We must always run at least the always inlining pass.
1097  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
1098    : CodeGenOptions::OnlyAlwaysInlining;
1099
1100  Opts.DebugInfo = Args.hasArg(OPT_g);
1101  Opts.LimitDebugInfo = !Args.hasArg(OPT_fno_limit_debug_info)
1102    || Args.hasArg(OPT_flimit_debug_info);
1103  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
1104  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
1105  Opts.ForbidGuardVariables = Args.hasArg(OPT_fforbid_guard_variables);
1106  Opts.UseRegisterSizedBitfieldAccess = Args.hasArg(
1107    OPT_fuse_register_sized_bitfield_access);
1108  Opts.RelaxedAliasing = Args.hasArg(OPT_relaxed_aliasing);
1109  Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
1110  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
1111  Opts.NoCommon = Args.hasArg(OPT_fno_common);
1112  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
1113  Opts.OptimizeSize = Args.hasArg(OPT_Os);
1114  Opts.OptimizeSize = Args.hasArg(OPT_Oz) ? 2 : Opts.OptimizeSize;
1115  Opts.SimplifyLibCalls = !(Args.hasArg(OPT_fno_builtin) ||
1116                            Args.hasArg(OPT_ffreestanding));
1117  Opts.UnrollLoops = Args.hasArg(OPT_funroll_loops) ||
1118                     (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
1119
1120  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
1121  Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
1122  Opts.ObjCRuntimeHasARC = Args.hasArg(OPT_fobjc_runtime_has_arc);
1123  Opts.ObjCRuntimeHasTerminate = Args.hasArg(OPT_fobjc_runtime_has_terminate);
1124  Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
1125  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
1126  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
1127  Opts.CodeModel = Args.getLastArgValue(OPT_mcode_model);
1128  Opts.DebugPass = Args.getLastArgValue(OPT_mdebug_pass);
1129  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
1130  Opts.DisableTailCalls = Args.hasArg(OPT_mdisable_tail_calls);
1131  Opts.FloatABI = Args.getLastArgValue(OPT_mfloat_abi);
1132  Opts.HiddenWeakVTables = Args.hasArg(OPT_fhidden_weak_vtables);
1133  Opts.LessPreciseFPMAD = Args.hasArg(OPT_cl_mad_enable);
1134  Opts.LimitFloatPrecision = Args.getLastArgValue(OPT_mlimit_float_precision);
1135  Opts.NoInfsFPMath = (Args.hasArg(OPT_menable_no_infinities) ||
1136                       Args.hasArg(OPT_cl_finite_math_only)||
1137                       Args.hasArg(OPT_cl_fast_relaxed_math));
1138  Opts.NoNaNsFPMath = (Args.hasArg(OPT_menable_no_nans) ||
1139                       Args.hasArg(OPT_cl_finite_math_only)||
1140                       Args.hasArg(OPT_cl_fast_relaxed_math));
1141  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
1142  Opts.BackendOptions = Args.getAllArgValues(OPT_backend_option);
1143  Opts.NumRegisterParameters = Args.getLastArgIntValue(OPT_mregparm, 0, Diags);
1144  Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
1145  Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
1146  Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
1147  Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
1148  Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
1149  Opts.NoDwarf2CFIAsm = Args.hasArg(OPT_fno_dwarf2_cfi_asm);
1150  Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
1151  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
1152  Opts.UnsafeFPMath = Args.hasArg(OPT_menable_unsafe_fp_math) ||
1153                      Args.hasArg(OPT_cl_unsafe_math_optimizations) ||
1154                      Args.hasArg(OPT_cl_fast_relaxed_math);
1155  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
1156  Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
1157  Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
1158
1159  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
1160  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
1161
1162  Opts.MainFileName = Args.getLastArgValue(OPT_main_file_name);
1163  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
1164
1165  Opts.InstrumentFunctions = Args.hasArg(OPT_finstrument_functions);
1166  Opts.InstrumentForProfiling = Args.hasArg(OPT_pg);
1167  Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
1168  Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
1169  Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
1170  Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
1171  Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
1172  Opts.StackRealignment = Args.hasArg(OPT_mstackrealign);
1173  if (Arg *A = Args.getLastArg(OPT_mstack_alignment)) {
1174    StringRef Val = A->getValue(Args);
1175    Val.getAsInteger(10, Opts.StackAlignment);
1176  }
1177
1178  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
1179    StringRef Name = A->getValue(Args);
1180    unsigned Method = llvm::StringSwitch<unsigned>(Name)
1181      .Case("legacy", CodeGenOptions::Legacy)
1182      .Case("non-legacy", CodeGenOptions::NonLegacy)
1183      .Case("mixed", CodeGenOptions::Mixed)
1184      .Default(~0U);
1185    if (Method == ~0U) {
1186      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
1187      Success = false;
1188    } else {
1189      Opts.ObjCDispatchMethod = Method;
1190    }
1191  }
1192
1193  return Success;
1194}
1195
1196static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
1197                                      ArgList &Args) {
1198  using namespace cc1options;
1199  Opts.OutputFile = Args.getLastArgValue(OPT_dependency_file);
1200  Opts.Targets = Args.getAllArgValues(OPT_MT);
1201  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
1202  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
1203  Opts.ShowHeaderIncludes = Args.hasArg(OPT_H);
1204  Opts.HeaderIncludeOutputFile = Args.getLastArgValue(OPT_header_include_file);
1205  Opts.AddMissingHeaderDeps = Args.hasArg(OPT_MG);
1206  Opts.DOTOutputFile = Args.getLastArgValue(OPT_dependency_dot);
1207}
1208
1209static bool ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
1210                                DiagnosticsEngine &Diags) {
1211  using namespace cc1options;
1212  bool Success = true;
1213
1214  Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
1215  Opts.DiagnosticSerializationFile =
1216    Args.getLastArgValue(OPT_diagnostic_serialized_file);
1217  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
1218  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
1219  Opts.Pedantic = Args.hasArg(OPT_pedantic);
1220  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
1221  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
1222  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
1223  Opts.ShowColumn = Args.hasFlag(OPT_fshow_column,
1224                                 OPT_fno_show_column,
1225                                 /*Default=*/true);
1226  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
1227  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
1228  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
1229
1230  // Default behavior is to not to show note include stacks.
1231  Opts.ShowNoteIncludeStack = false;
1232  if (Arg *A = Args.getLastArg(OPT_fdiagnostics_show_note_include_stack,
1233                               OPT_fno_diagnostics_show_note_include_stack))
1234    if (A->getOption().matches(OPT_fdiagnostics_show_note_include_stack))
1235      Opts.ShowNoteIncludeStack = true;
1236
1237  StringRef ShowOverloads =
1238    Args.getLastArgValue(OPT_fshow_overloads_EQ, "all");
1239  if (ShowOverloads == "best")
1240    Opts.ShowOverloads = DiagnosticsEngine::Ovl_Best;
1241  else if (ShowOverloads == "all")
1242    Opts.ShowOverloads = DiagnosticsEngine::Ovl_All;
1243  else {
1244    Diags.Report(diag::err_drv_invalid_value)
1245      << Args.getLastArg(OPT_fshow_overloads_EQ)->getAsString(Args)
1246      << ShowOverloads;
1247    Success = false;
1248  }
1249
1250  StringRef ShowCategory =
1251    Args.getLastArgValue(OPT_fdiagnostics_show_category, "none");
1252  if (ShowCategory == "none")
1253    Opts.ShowCategories = 0;
1254  else if (ShowCategory == "id")
1255    Opts.ShowCategories = 1;
1256  else if (ShowCategory == "name")
1257    Opts.ShowCategories = 2;
1258  else {
1259    Diags.Report(diag::err_drv_invalid_value)
1260      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
1261      << ShowCategory;
1262    Success = false;
1263  }
1264
1265  StringRef Format =
1266    Args.getLastArgValue(OPT_fdiagnostics_format, "clang");
1267  if (Format == "clang")
1268    Opts.Format = DiagnosticOptions::Clang;
1269  else if (Format == "msvc")
1270    Opts.Format = DiagnosticOptions::Msvc;
1271  else if (Format == "vi")
1272    Opts.Format = DiagnosticOptions::Vi;
1273  else {
1274    Diags.Report(diag::err_drv_invalid_value)
1275      << Args.getLastArg(OPT_fdiagnostics_format)->getAsString(Args)
1276      << Format;
1277    Success = false;
1278  }
1279
1280  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
1281  Opts.ShowParseableFixits = Args.hasArg(OPT_fdiagnostics_parseable_fixits);
1282  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
1283  Opts.ErrorLimit = Args.getLastArgIntValue(OPT_ferror_limit, 0, Diags);
1284  Opts.MacroBacktraceLimit
1285    = Args.getLastArgIntValue(OPT_fmacro_backtrace_limit,
1286                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
1287  Opts.TemplateBacktraceLimit
1288    = Args.getLastArgIntValue(OPT_ftemplate_backtrace_limit,
1289                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
1290                         Diags);
1291  Opts.ConstexprBacktraceLimit
1292    = Args.getLastArgIntValue(OPT_fconstexpr_backtrace_limit,
1293                         DiagnosticOptions::DefaultConstexprBacktraceLimit,
1294                         Diags);
1295  Opts.TabStop = Args.getLastArgIntValue(OPT_ftabstop,
1296                                    DiagnosticOptions::DefaultTabStop, Diags);
1297  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
1298    Diags.Report(diag::warn_ignoring_ftabstop_value)
1299      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
1300    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
1301  }
1302  Opts.MessageLength = Args.getLastArgIntValue(OPT_fmessage_length, 0, Diags);
1303  Opts.DumpBuildInformation = Args.getLastArgValue(OPT_dump_build_information);
1304  Opts.Warnings = Args.getAllArgValues(OPT_W);
1305
1306  return Success;
1307}
1308
1309static void ParseFileSystemArgs(FileSystemOptions &Opts, ArgList &Args) {
1310  Opts.WorkingDir = Args.getLastArgValue(OPT_working_directory);
1311}
1312
1313static InputKind ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args,
1314                                   DiagnosticsEngine &Diags) {
1315  using namespace cc1options;
1316  Opts.ProgramAction = frontend::ParseSyntaxOnly;
1317  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
1318    switch (A->getOption().getID()) {
1319    default:
1320      llvm_unreachable("Invalid option in group!");
1321    case OPT_ast_dump:
1322      Opts.ProgramAction = frontend::ASTDump; break;
1323    case OPT_ast_dump_xml:
1324      Opts.ProgramAction = frontend::ASTDumpXML; break;
1325    case OPT_ast_print:
1326      Opts.ProgramAction = frontend::ASTPrint; break;
1327    case OPT_ast_view:
1328      Opts.ProgramAction = frontend::ASTView; break;
1329    case OPT_dump_raw_tokens:
1330      Opts.ProgramAction = frontend::DumpRawTokens; break;
1331    case OPT_dump_tokens:
1332      Opts.ProgramAction = frontend::DumpTokens; break;
1333    case OPT_S:
1334      Opts.ProgramAction = frontend::EmitAssembly; break;
1335    case OPT_emit_llvm_bc:
1336      Opts.ProgramAction = frontend::EmitBC; break;
1337    case OPT_emit_html:
1338      Opts.ProgramAction = frontend::EmitHTML; break;
1339    case OPT_emit_llvm:
1340      Opts.ProgramAction = frontend::EmitLLVM; break;
1341    case OPT_emit_llvm_only:
1342      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
1343    case OPT_emit_codegen_only:
1344      Opts.ProgramAction = frontend::EmitCodeGenOnly; break;
1345    case OPT_emit_obj:
1346      Opts.ProgramAction = frontend::EmitObj; break;
1347    case OPT_fixit_EQ:
1348      Opts.FixItSuffix = A->getValue(Args);
1349      // fall-through!
1350    case OPT_fixit:
1351      Opts.ProgramAction = frontend::FixIt; break;
1352    case OPT_emit_module:
1353      Opts.ProgramAction = frontend::GenerateModule; break;
1354    case OPT_emit_pch:
1355      Opts.ProgramAction = frontend::GeneratePCH; break;
1356    case OPT_emit_pth:
1357      Opts.ProgramAction = frontend::GeneratePTH; break;
1358    case OPT_init_only:
1359      Opts.ProgramAction = frontend::InitOnly; break;
1360    case OPT_fsyntax_only:
1361      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
1362    case OPT_print_decl_contexts:
1363      Opts.ProgramAction = frontend::PrintDeclContext; break;
1364    case OPT_print_preamble:
1365      Opts.ProgramAction = frontend::PrintPreamble; break;
1366    case OPT_E:
1367      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
1368    case OPT_rewrite_macros:
1369      Opts.ProgramAction = frontend::RewriteMacros; break;
1370    case OPT_rewrite_objc:
1371      Opts.ProgramAction = frontend::RewriteObjC; break;
1372    case OPT_rewrite_test:
1373      Opts.ProgramAction = frontend::RewriteTest; break;
1374    case OPT_analyze:
1375      Opts.ProgramAction = frontend::RunAnalysis; break;
1376    case OPT_Eonly:
1377      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
1378    }
1379  }
1380
1381  if (const Arg* A = Args.getLastArg(OPT_plugin)) {
1382    Opts.Plugins.push_back(A->getValue(Args,0));
1383    Opts.ProgramAction = frontend::PluginAction;
1384    Opts.ActionName = A->getValue(Args);
1385
1386    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1387           end = Args.filtered_end(); it != end; ++it) {
1388      if ((*it)->getValue(Args, 0) == Opts.ActionName)
1389        Opts.PluginArgs.push_back((*it)->getValue(Args, 1));
1390    }
1391  }
1392
1393  Opts.AddPluginActions = Args.getAllArgValues(OPT_add_plugin);
1394  Opts.AddPluginArgs.resize(Opts.AddPluginActions.size());
1395  for (int i = 0, e = Opts.AddPluginActions.size(); i != e; ++i) {
1396    for (arg_iterator it = Args.filtered_begin(OPT_plugin_arg),
1397           end = Args.filtered_end(); it != end; ++it) {
1398      if ((*it)->getValue(Args, 0) == Opts.AddPluginActions[i])
1399        Opts.AddPluginArgs[i].push_back((*it)->getValue(Args, 1));
1400    }
1401  }
1402
1403  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
1404    Opts.CodeCompletionAt =
1405      ParsedSourceLocation::FromString(A->getValue(Args));
1406    if (Opts.CodeCompletionAt.FileName.empty())
1407      Diags.Report(diag::err_drv_invalid_value)
1408        << A->getAsString(Args) << A->getValue(Args);
1409  }
1410  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1411
1412  Opts.OutputFile = Args.getLastArgValue(OPT_o);
1413  Opts.Plugins = Args.getAllArgValues(OPT_load);
1414  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1415  Opts.ShowHelp = Args.hasArg(OPT_help);
1416  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1417  Opts.ShowCodePatternsInCodeCompletion
1418    = Args.hasArg(OPT_code_completion_patterns);
1419  Opts.ShowGlobalSymbolsInCodeCompletion
1420    = !Args.hasArg(OPT_no_code_completion_globals);
1421  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1422  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1423  Opts.ShowVersion = Args.hasArg(OPT_version);
1424  Opts.ASTMergeFiles = Args.getAllArgValues(OPT_ast_merge);
1425  Opts.LLVMArgs = Args.getAllArgValues(OPT_mllvm);
1426  Opts.FixWhatYouCan = Args.hasArg(OPT_fix_what_you_can);
1427  Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
1428  Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
1429  Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
1430  Opts.OverrideRecordLayoutsFile
1431    = Args.getLastArgValue(OPT_foverride_record_layout_EQ);
1432  Opts.ARCMTAction = FrontendOptions::ARCMT_None;
1433  if (const Arg *A = Args.getLastArg(OPT_arcmt_check,
1434                                     OPT_arcmt_modify,
1435                                     OPT_arcmt_migrate)) {
1436    switch (A->getOption().getID()) {
1437    default:
1438      llvm_unreachable("missed a case");
1439    case OPT_arcmt_check:
1440      Opts.ARCMTAction = FrontendOptions::ARCMT_Check;
1441      break;
1442    case OPT_arcmt_modify:
1443      Opts.ARCMTAction = FrontendOptions::ARCMT_Modify;
1444      break;
1445    case OPT_arcmt_migrate:
1446      Opts.ARCMTAction = FrontendOptions::ARCMT_Migrate;
1447      break;
1448    }
1449  }
1450  Opts.ARCMTMigrateDir = Args.getLastArgValue(OPT_arcmt_migrate_directory);
1451  Opts.ARCMTMigrateReportOut
1452    = Args.getLastArgValue(OPT_arcmt_migrate_report_output);
1453  Opts.ARCMTMigrateEmitARCErrors
1454    = Args.hasArg(OPT_arcmt_migrate_emit_arc_errors);
1455
1456  InputKind DashX = IK_None;
1457  if (const Arg *A = Args.getLastArg(OPT_x)) {
1458    DashX = llvm::StringSwitch<InputKind>(A->getValue(Args))
1459      .Case("c", IK_C)
1460      .Case("cl", IK_OpenCL)
1461      .Case("cuda", IK_CUDA)
1462      .Case("c++", IK_CXX)
1463      .Case("objective-c", IK_ObjC)
1464      .Case("objective-c++", IK_ObjCXX)
1465      .Case("cpp-output", IK_PreprocessedC)
1466      .Case("assembler-with-cpp", IK_Asm)
1467      .Case("c++-cpp-output", IK_PreprocessedCXX)
1468      .Case("objective-c-cpp-output", IK_PreprocessedObjC)
1469      .Case("objc-cpp-output", IK_PreprocessedObjC)
1470      .Case("objective-c++-cpp-output", IK_PreprocessedObjCXX)
1471      .Case("objc++-cpp-output", IK_PreprocessedObjCXX)
1472      .Case("c-header", IK_C)
1473      .Case("cl-header", IK_OpenCL)
1474      .Case("objective-c-header", IK_ObjC)
1475      .Case("c++-header", IK_CXX)
1476      .Case("objective-c++-header", IK_ObjCXX)
1477      .Case("ast", IK_AST)
1478      .Case("ir", IK_LLVM_IR)
1479      .Default(IK_None);
1480    if (DashX == IK_None)
1481      Diags.Report(diag::err_drv_invalid_value)
1482        << A->getAsString(Args) << A->getValue(Args);
1483  }
1484
1485  // '-' is the default input if none is given.
1486  std::vector<std::string> Inputs = Args.getAllArgValues(OPT_INPUT);
1487  Opts.Inputs.clear();
1488  if (Inputs.empty())
1489    Inputs.push_back("-");
1490  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1491    InputKind IK = DashX;
1492    if (IK == IK_None) {
1493      IK = FrontendOptions::getInputKindForExtension(
1494        StringRef(Inputs[i]).rsplit('.').second);
1495      // FIXME: Remove this hack.
1496      if (i == 0)
1497        DashX = IK;
1498    }
1499    Opts.Inputs.push_back(FrontendInputFile(Inputs[i], IK));
1500  }
1501
1502  return DashX;
1503}
1504
1505std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1506                                                 void *MainAddr) {
1507  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1508
1509  if (!P.isEmpty()) {
1510    P.eraseComponent();  // Remove /clang from foo/bin/clang
1511    P.eraseComponent();  // Remove /bin   from foo/bin
1512
1513    // Get foo/lib/clang/<version>/include
1514    P.appendComponent("lib");
1515    P.appendComponent("clang");
1516    P.appendComponent(CLANG_VERSION_STRING);
1517  }
1518
1519  return P.str();
1520}
1521
1522static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1523  using namespace cc1options;
1524  Opts.Sysroot = Args.getLastArgValue(OPT_isysroot, "/");
1525  Opts.Verbose = Args.hasArg(OPT_v);
1526  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1527  Opts.UseStandardSystemIncludes = !Args.hasArg(OPT_nostdsysteminc);
1528  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1529  if (const Arg *A = Args.getLastArg(OPT_stdlib_EQ))
1530    Opts.UseLibcxx = (strcmp(A->getValue(Args), "libc++") == 0);
1531  Opts.ResourceDir = Args.getLastArgValue(OPT_resource_dir);
1532  Opts.ModuleCachePath = Args.getLastArgValue(OPT_fmodule_cache_path);
1533  Opts.DisableModuleHash = Args.hasArg(OPT_fdisable_module_hash);
1534
1535  // Add -I..., -F..., and -index-header-map options in order.
1536  bool IsIndexHeaderMap = false;
1537  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F,
1538                                             OPT_index_header_map),
1539       ie = Args.filtered_end(); it != ie; ++it) {
1540    if ((*it)->getOption().matches(OPT_index_header_map)) {
1541      // -index-header-map applies to the next -I or -F.
1542      IsIndexHeaderMap = true;
1543      continue;
1544    }
1545
1546    frontend::IncludeDirGroup Group
1547      = IsIndexHeaderMap? frontend::IndexHeaderMap : frontend::Angled;
1548
1549    Opts.AddPath((*it)->getValue(Args), Group, true,
1550                 /*IsFramework=*/ (*it)->getOption().matches(OPT_F), false);
1551    IsIndexHeaderMap = false;
1552  }
1553
1554  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1555  StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1556  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1557                                             OPT_iwithprefixbefore),
1558         ie = Args.filtered_end(); it != ie; ++it) {
1559    const Arg *A = *it;
1560    if (A->getOption().matches(OPT_iprefix))
1561      Prefix = A->getValue(Args);
1562    else if (A->getOption().matches(OPT_iwithprefix))
1563      Opts.AddPath(Prefix.str() + A->getValue(Args),
1564                   frontend::System, false, false, false);
1565    else
1566      Opts.AddPath(Prefix.str() + A->getValue(Args),
1567                   frontend::Angled, false, false, false);
1568  }
1569
1570  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1571         ie = Args.filtered_end(); it != ie; ++it)
1572    Opts.AddPath((*it)->getValue(Args), frontend::After, true, false, false);
1573  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1574         ie = Args.filtered_end(); it != ie; ++it)
1575    Opts.AddPath((*it)->getValue(Args), frontend::Quoted, true, false, false);
1576  for (arg_iterator it = Args.filtered_begin(OPT_isystem,
1577         OPT_iwithsysroot), ie = Args.filtered_end(); it != ie; ++it)
1578    Opts.AddPath((*it)->getValue(Args), frontend::System, true, false,
1579                 !(*it)->getOption().matches(OPT_iwithsysroot));
1580  for (arg_iterator it = Args.filtered_begin(OPT_iframework),
1581         ie = Args.filtered_end(); it != ie; ++it)
1582    Opts.AddPath((*it)->getValue(Args), frontend::System, true, true,
1583                 true);
1584
1585  // Add the paths for the various language specific isystem flags.
1586  for (arg_iterator it = Args.filtered_begin(OPT_c_isystem),
1587       ie = Args.filtered_end(); it != ie; ++it)
1588    Opts.AddPath((*it)->getValue(Args), frontend::CSystem, true, false, true);
1589  for (arg_iterator it = Args.filtered_begin(OPT_cxx_isystem),
1590       ie = Args.filtered_end(); it != ie; ++it)
1591    Opts.AddPath((*it)->getValue(Args), frontend::CXXSystem, true, false, true);
1592  for (arg_iterator it = Args.filtered_begin(OPT_objc_isystem),
1593       ie = Args.filtered_end(); it != ie; ++it)
1594    Opts.AddPath((*it)->getValue(Args), frontend::ObjCSystem, true, false,true);
1595  for (arg_iterator it = Args.filtered_begin(OPT_objcxx_isystem),
1596       ie = Args.filtered_end(); it != ie; ++it)
1597    Opts.AddPath((*it)->getValue(Args), frontend::ObjCXXSystem, true, false,
1598                 true);
1599
1600  // Add the internal paths from a driver that detects standard include paths.
1601  for (arg_iterator I = Args.filtered_begin(OPT_internal_isystem,
1602                                            OPT_internal_externc_isystem),
1603                    E = Args.filtered_end();
1604       I != E; ++I)
1605    Opts.AddPath((*I)->getValue(Args), frontend::System,
1606                 false, false, /*IgnoreSysRoot=*/true, /*IsInternal=*/true,
1607                 (*I)->getOption().matches(OPT_internal_externc_isystem));
1608}
1609
1610void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,
1611                                         LangStandard::Kind LangStd) {
1612  // Set some properties which depend solely on the input kind; it would be nice
1613  // to move these to the language standard, and have the driver resolve the
1614  // input kind + language standard.
1615  if (IK == IK_Asm) {
1616    Opts.AsmPreprocessor = 1;
1617  } else if (IK == IK_ObjC ||
1618             IK == IK_ObjCXX ||
1619             IK == IK_PreprocessedObjC ||
1620             IK == IK_PreprocessedObjCXX) {
1621    Opts.ObjC1 = Opts.ObjC2 = 1;
1622  }
1623
1624  if (LangStd == LangStandard::lang_unspecified) {
1625    // Based on the base language, pick one.
1626    switch (IK) {
1627    case IK_None:
1628    case IK_AST:
1629    case IK_LLVM_IR:
1630      llvm_unreachable("Invalid input kind!");
1631    case IK_OpenCL:
1632      LangStd = LangStandard::lang_opencl;
1633      break;
1634    case IK_CUDA:
1635      LangStd = LangStandard::lang_cuda;
1636      break;
1637    case IK_Asm:
1638    case IK_C:
1639    case IK_PreprocessedC:
1640    case IK_ObjC:
1641    case IK_PreprocessedObjC:
1642      LangStd = LangStandard::lang_gnu99;
1643      break;
1644    case IK_CXX:
1645    case IK_PreprocessedCXX:
1646    case IK_ObjCXX:
1647    case IK_PreprocessedObjCXX:
1648      LangStd = LangStandard::lang_gnucxx98;
1649      break;
1650    }
1651  }
1652
1653  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1654  Opts.BCPLComment = Std.hasBCPLComments();
1655  Opts.C99 = Std.isC99();
1656  Opts.C11 = Std.isC11();
1657  Opts.CPlusPlus = Std.isCPlusPlus();
1658  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1659  Opts.Digraphs = Std.hasDigraphs();
1660  Opts.GNUMode = Std.isGNUMode();
1661  Opts.GNUInline = !Std.isC99();
1662  Opts.HexFloats = Std.hasHexFloats();
1663  Opts.ImplicitInt = Std.hasImplicitInt();
1664
1665  // OpenCL has some additional defaults.
1666  if (LangStd == LangStandard::lang_opencl) {
1667    Opts.OpenCL = 1;
1668    Opts.AltiVec = 0;
1669    Opts.CXXOperatorNames = 1;
1670    Opts.LaxVectorConversions = 0;
1671    Opts.DefaultFPContract = 1;
1672  }
1673
1674  if (LangStd == LangStandard::lang_cuda)
1675    Opts.CUDA = 1;
1676
1677  // OpenCL and C++ both have bool, true, false keywords.
1678  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1679
1680  Opts.GNUKeywords = Opts.GNUMode;
1681  Opts.CXXOperatorNames = Opts.CPlusPlus;
1682
1683  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1684  // is specified, or -std is set to a conforming mode.
1685  Opts.Trigraphs = !Opts.GNUMode;
1686
1687  Opts.DollarIdents = !Opts.AsmPreprocessor;
1688}
1689
1690static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
1691                          DiagnosticsEngine &Diags) {
1692  // FIXME: Cleanup per-file based stuff.
1693  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1694  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1695    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1696#define LANGSTANDARD(id, name, desc, features) \
1697      .Case(name, LangStandard::lang_##id)
1698#include "clang/Frontend/LangStandards.def"
1699      .Default(LangStandard::lang_unspecified);
1700    if (LangStd == LangStandard::lang_unspecified)
1701      Diags.Report(diag::err_drv_invalid_value)
1702        << A->getAsString(Args) << A->getValue(Args);
1703    else {
1704      // Valid standard, check to make sure language and standard are compatable.
1705      const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1706      switch (IK) {
1707      case IK_C:
1708      case IK_ObjC:
1709      case IK_PreprocessedC:
1710      case IK_PreprocessedObjC:
1711        if (!(Std.isC89() || Std.isC99()))
1712          Diags.Report(diag::err_drv_argument_not_allowed_with)
1713            << A->getAsString(Args) << "C/ObjC";
1714        break;
1715      case IK_CXX:
1716      case IK_ObjCXX:
1717      case IK_PreprocessedCXX:
1718      case IK_PreprocessedObjCXX:
1719        if (!Std.isCPlusPlus())
1720          Diags.Report(diag::err_drv_argument_not_allowed_with)
1721            << A->getAsString(Args) << "C++/ObjC++";
1722        break;
1723      case IK_OpenCL:
1724        if (!Std.isC99())
1725          Diags.Report(diag::err_drv_argument_not_allowed_with)
1726            << A->getAsString(Args) << "OpenCL";
1727        break;
1728      case IK_CUDA:
1729        if (!Std.isCPlusPlus())
1730          Diags.Report(diag::err_drv_argument_not_allowed_with)
1731            << A->getAsString(Args) << "CUDA";
1732        break;
1733      default:
1734        break;
1735      }
1736    }
1737  }
1738
1739  if (const Arg *A = Args.getLastArg(OPT_cl_std_EQ)) {
1740    if (strcmp(A->getValue(Args), "CL1.1") != 0) {
1741      Diags.Report(diag::err_drv_invalid_value)
1742        << A->getAsString(Args) << A->getValue(Args);
1743    }
1744  }
1745
1746  CompilerInvocation::setLangDefaults(Opts, IK, LangStd);
1747
1748  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1749  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1750  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1751  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1752  // name, as it doesn't seem a useful distinction.
1753  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1754                                  Opts.GNUKeywords);
1755
1756  if (Args.hasArg(OPT_fno_operator_names))
1757    Opts.CXXOperatorNames = 0;
1758
1759  if (Opts.ObjC1) {
1760    if (Args.hasArg(OPT_fobjc_gc_only))
1761      Opts.setGC(LangOptions::GCOnly);
1762    else if (Args.hasArg(OPT_fobjc_gc))
1763      Opts.setGC(LangOptions::HybridGC);
1764    else if (Args.hasArg(OPT_fobjc_arc)) {
1765      Opts.ObjCAutoRefCount = 1;
1766      if (Args.hasArg(OPT_fobjc_fragile_abi))
1767        Diags.Report(diag::err_arc_nonfragile_abi);
1768    }
1769
1770    if (Args.hasArg(OPT_fobjc_runtime_has_weak))
1771      Opts.ObjCRuntimeHasWeak = 1;
1772
1773    if (Args.hasArg(OPT_fno_objc_infer_related_result_type))
1774      Opts.ObjCInferRelatedResultType = 0;
1775  }
1776
1777  if (Args.hasArg(OPT_fgnu89_inline))
1778    Opts.GNUInline = 1;
1779
1780  if (Args.hasArg(OPT_fapple_kext)) {
1781    if (!Opts.CPlusPlus)
1782      Diags.Report(diag::warn_c_kext);
1783    else
1784      Opts.AppleKext = 1;
1785  }
1786
1787  if (Args.hasArg(OPT_print_ivar_layout))
1788    Opts.ObjCGCBitmapPrint = 1;
1789  if (Args.hasArg(OPT_fno_constant_cfstrings))
1790    Opts.NoConstantCFStrings = 1;
1791
1792  if (Args.hasArg(OPT_faltivec))
1793    Opts.AltiVec = 1;
1794
1795  if (Args.hasArg(OPT_pthread))
1796    Opts.POSIXThreads = 1;
1797
1798  if (Args.hasArg(OPT_fdelayed_template_parsing))
1799    Opts.DelayedTemplateParsing = 1;
1800
1801  StringRef Vis = Args.getLastArgValue(OPT_fvisibility, "default");
1802  if (Vis == "default")
1803    Opts.setVisibilityMode(DefaultVisibility);
1804  else if (Vis == "hidden")
1805    Opts.setVisibilityMode(HiddenVisibility);
1806  else if (Vis == "protected")
1807    // FIXME: diagnose if target does not support protected visibility
1808    Opts.setVisibilityMode(ProtectedVisibility);
1809  else
1810    Diags.Report(diag::err_drv_invalid_value)
1811      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1812
1813  if (Args.hasArg(OPT_fvisibility_inlines_hidden))
1814    Opts.InlineVisibilityHidden = 1;
1815
1816  if (Args.hasArg(OPT_ftrapv)) {
1817    Opts.setSignedOverflowBehavior(LangOptions::SOB_Trapping);
1818    // Set the handler, if one is specified.
1819    Opts.OverflowHandler =
1820        Args.getLastArgValue(OPT_ftrapv_handler);
1821  }
1822  else if (Args.hasArg(OPT_fwrapv))
1823    Opts.setSignedOverflowBehavior(LangOptions::SOB_Defined);
1824
1825  if (Args.hasArg(OPT_trigraphs))
1826    Opts.Trigraphs = 1;
1827
1828  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1829                                   OPT_fno_dollars_in_identifiers,
1830                                   Opts.DollarIdents);
1831  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1832  Opts.MicrosoftExt
1833    = Args.hasArg(OPT_fms_extensions) || Args.hasArg(OPT_fms_compatibility);
1834  Opts.MicrosoftMode = Args.hasArg(OPT_fms_compatibility);
1835  Opts.MSCVersion = Args.getLastArgIntValue(OPT_fmsc_version, 0, Diags);
1836  Opts.Borland = Args.hasArg(OPT_fborland_extensions);
1837  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1838  Opts.ConstStrings = Args.hasFlag(OPT_fconst_strings, OPT_fno_const_strings,
1839                                   Opts.ConstStrings);
1840  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1841    Opts.LaxVectorConversions = 0;
1842  if (Args.hasArg(OPT_fno_threadsafe_statics))
1843    Opts.ThreadsafeStatics = 0;
1844  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1845  Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
1846  Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
1847  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1848  Opts.TraditionalCPP = Args.hasArg(OPT_traditional_cpp);
1849
1850  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1851  Opts.Blocks = Args.hasArg(OPT_fblocks);
1852  Opts.BlocksRuntimeOptional = Args.hasArg(OPT_fblocks_runtime_optional);
1853  Opts.Modules = Args.hasArg(OPT_fmodules);
1854  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1855  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1856  Opts.ShortEnums = Args.hasArg(OPT_fshort_enums);
1857  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1858  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1859  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1860  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1861  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1862  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1863  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1864  Opts.InstantiationDepth = Args.getLastArgIntValue(OPT_ftemplate_depth, 1024,
1865                                                    Diags);
1866  Opts.ConstexprCallDepth = Args.getLastArgIntValue(OPT_fconstexpr_depth, 512,
1867                                                    Diags);
1868  Opts.DelayedTemplateParsing = Args.hasArg(OPT_fdelayed_template_parsing);
1869  Opts.NumLargeByValueCopy = Args.getLastArgIntValue(OPT_Wlarge_by_value_copy,
1870                                                    0, Diags);
1871  Opts.MSBitfields = Args.hasArg(OPT_mms_bitfields);
1872  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1873  Opts.ObjCConstantStringClass =
1874    Args.getLastArgValue(OPT_fconstant_string_class);
1875  Opts.ObjCNonFragileABI = !Args.hasArg(OPT_fobjc_fragile_abi);
1876  if (Opts.ObjCNonFragileABI)
1877    Opts.ObjCNonFragileABI2 = true;
1878  Opts.ObjCDefaultSynthProperties =
1879    Args.hasArg(OPT_fobjc_default_synthesize_properties);
1880  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1881  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1882  Opts.PackStruct = Args.getLastArgIntValue(OPT_fpack_struct, 0, Diags);
1883  Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
1884  Opts.Static = Args.hasArg(OPT_static_define);
1885  Opts.DumpRecordLayoutsSimple = Args.hasArg(OPT_fdump_record_layouts_simple);
1886  Opts.DumpRecordLayouts = Opts.DumpRecordLayoutsSimple
1887                        || Args.hasArg(OPT_fdump_record_layouts);
1888  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1889  Opts.SpellChecking = !Args.hasArg(OPT_fno_spell_checking);
1890  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1891  Opts.SinglePrecisionConstants = Args.hasArg(OPT_cl_single_precision_constant);
1892  Opts.FastRelaxedMath = Args.hasArg(OPT_cl_fast_relaxed_math);
1893  Opts.MRTD = Args.hasArg(OPT_mrtd);
1894  Opts.HexagonQdsp6Compat = Args.hasArg(OPT_mqdsp6_compat);
1895  Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
1896  Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
1897  Opts.DebuggerSupport = Args.hasArg(OPT_fdebugger_support);
1898  Opts.DebuggerCastResultToId = Args.hasArg(OPT_fdebugger_cast_result_to_id);
1899  Opts.AddressSanitizer = Args.hasArg(OPT_faddress_sanitizer);
1900  Opts.ThreadSanitizer = Args.hasArg(OPT_fthread_sanitizer);
1901  Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
1902  Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
1903
1904  // Record whether the __DEPRECATED define was requested.
1905  Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
1906                                 OPT_fno_deprecated_macro,
1907                                 Opts.Deprecated);
1908
1909  // FIXME: Eliminate this dependency.
1910  unsigned Opt = getOptimizationLevel(Args, IK, Diags);
1911  Opts.Optimize = Opt != 0;
1912  Opts.OptimizeSize = Args.hasArg(OPT_Os) || Args.hasArg(OPT_Oz);
1913
1914  // This is the __NO_INLINE__ define, which just depends on things like the
1915  // optimization level and -fno-inline, not actually whether the backend has
1916  // inlining enabled.
1917  //
1918  // FIXME: This is affected by other options (-fno-inline).
1919  Opts.NoInline = !Opt;
1920
1921  Opts.FastMath = Args.hasArg(OPT_ffast_math);
1922
1923  unsigned SSP = Args.getLastArgIntValue(OPT_stack_protector, 0, Diags);
1924  switch (SSP) {
1925  default:
1926    Diags.Report(diag::err_drv_invalid_value)
1927      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1928    break;
1929  case 0: Opts.setStackProtector(LangOptions::SSPOff); break;
1930  case 1: Opts.setStackProtector(LangOptions::SSPOn);  break;
1931  case 2: Opts.setStackProtector(LangOptions::SSPReq); break;
1932  }
1933}
1934
1935static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1936                                  FileManager &FileMgr,
1937                                  DiagnosticsEngine &Diags) {
1938  using namespace cc1options;
1939  Opts.ImplicitPCHInclude = Args.getLastArgValue(OPT_include_pch);
1940  Opts.ImplicitPTHInclude = Args.getLastArgValue(OPT_include_pth);
1941  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1942      Opts.TokenCache = A->getValue(Args);
1943  else
1944    Opts.TokenCache = Opts.ImplicitPTHInclude;
1945  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1946  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1947  Opts.DisablePCHValidation = Args.hasArg(OPT_fno_validate_pch);
1948
1949  Opts.DumpDeserializedPCHDecls = Args.hasArg(OPT_dump_deserialized_pch_decls);
1950  for (arg_iterator it = Args.filtered_begin(OPT_error_on_deserialized_pch_decl),
1951         ie = Args.filtered_end(); it != ie; ++it) {
1952    const Arg *A = *it;
1953    Opts.DeserializedPCHDeclsToErrorOn.insert(A->getValue(Args));
1954  }
1955
1956  if (const Arg *A = Args.getLastArg(OPT_preamble_bytes_EQ)) {
1957    StringRef Value(A->getValue(Args));
1958    size_t Comma = Value.find(',');
1959    unsigned Bytes = 0;
1960    unsigned EndOfLine = 0;
1961
1962    if (Comma == StringRef::npos ||
1963        Value.substr(0, Comma).getAsInteger(10, Bytes) ||
1964        Value.substr(Comma + 1).getAsInteger(10, EndOfLine))
1965      Diags.Report(diag::err_drv_preamble_format);
1966    else {
1967      Opts.PrecompiledPreambleBytes.first = Bytes;
1968      Opts.PrecompiledPreambleBytes.second = (EndOfLine != 0);
1969    }
1970  }
1971
1972  // Add macros from the command line.
1973  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1974         ie = Args.filtered_end(); it != ie; ++it) {
1975    if ((*it)->getOption().matches(OPT_D))
1976      Opts.addMacroDef((*it)->getValue(Args));
1977    else
1978      Opts.addMacroUndef((*it)->getValue(Args));
1979  }
1980
1981  Opts.MacroIncludes = Args.getAllArgValues(OPT_imacros);
1982
1983  // Add the ordered list of -includes.
1984  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1985                                             OPT_include_pth),
1986         ie = Args.filtered_end(); it != ie; ++it) {
1987    const Arg *A = *it;
1988    // PCH is handled specially, we need to extra the original include path.
1989    if (A->getOption().matches(OPT_include_pch)) {
1990      std::string OriginalFile =
1991        ASTReader::getOriginalSourceFile(A->getValue(Args), FileMgr, Diags);
1992      if (OriginalFile.empty())
1993        continue;
1994
1995      Opts.Includes.push_back(OriginalFile);
1996    } else
1997      Opts.Includes.push_back(A->getValue(Args));
1998  }
1999
2000  for (arg_iterator it = Args.filtered_begin(OPT_chain_include),
2001         ie = Args.filtered_end(); it != ie; ++it) {
2002    const Arg *A = *it;
2003    Opts.ChainedIncludes.push_back(A->getValue(Args));
2004  }
2005
2006  // Include 'altivec.h' if -faltivec option present
2007  if (Args.hasArg(OPT_faltivec))
2008    Opts.Includes.push_back("altivec.h");
2009
2010  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
2011         ie = Args.filtered_end(); it != ie; ++it) {
2012    const Arg *A = *it;
2013    std::pair<StringRef,StringRef> Split =
2014      StringRef(A->getValue(Args)).split(';');
2015
2016    if (Split.second.empty()) {
2017      Diags.Report(diag::err_drv_invalid_remap_file) << A->getAsString(Args);
2018      continue;
2019    }
2020
2021    Opts.addRemappedFile(Split.first, Split.second);
2022  }
2023
2024  if (Arg *A = Args.getLastArg(OPT_fobjc_arc_cxxlib_EQ)) {
2025    StringRef Name = A->getValue(Args);
2026    unsigned Library = llvm::StringSwitch<unsigned>(Name)
2027      .Case("libc++", ARCXX_libcxx)
2028      .Case("libstdc++", ARCXX_libstdcxx)
2029      .Case("none", ARCXX_nolib)
2030      .Default(~0U);
2031    if (Library == ~0U)
2032      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
2033    else
2034      Opts.ObjCXXARCStandardLibrary = (ObjCXXARCStandardLibraryKind)Library;
2035  }
2036}
2037
2038static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
2039                                        ArgList &Args) {
2040  using namespace cc1options;
2041  Opts.ShowCPP = !Args.hasArg(OPT_dM);
2042  Opts.ShowComments = Args.hasArg(OPT_C);
2043  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
2044  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
2045  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
2046}
2047
2048static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
2049  using namespace cc1options;
2050  Opts.ABI = Args.getLastArgValue(OPT_target_abi);
2051  Opts.CXXABI = Args.getLastArgValue(OPT_cxx_abi);
2052  Opts.CPU = Args.getLastArgValue(OPT_target_cpu);
2053  Opts.Features = Args.getAllArgValues(OPT_target_feature);
2054  Opts.LinkerVersion = Args.getLastArgValue(OPT_target_linker_version);
2055  Opts.Triple = llvm::Triple::normalize(Args.getLastArgValue(OPT_triple));
2056
2057  // Use the default target triple if unspecified.
2058  if (Opts.Triple.empty())
2059    Opts.Triple = llvm::sys::getDefaultTargetTriple();
2060}
2061
2062//
2063
2064bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
2065                                        const char *const *ArgBegin,
2066                                        const char *const *ArgEnd,
2067                                        DiagnosticsEngine &Diags) {
2068  bool Success = true;
2069
2070  // Parse the arguments.
2071  OwningPtr<OptTable> Opts(createCC1OptTable());
2072  unsigned MissingArgIndex, MissingArgCount;
2073  OwningPtr<InputArgList> Args(
2074    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
2075
2076  // Check for missing argument error.
2077  if (MissingArgCount) {
2078    Diags.Report(diag::err_drv_missing_argument)
2079      << Args->getArgString(MissingArgIndex) << MissingArgCount;
2080    Success = false;
2081  }
2082
2083  // Issue errors on unknown arguments.
2084  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
2085         ie = Args->filtered_end(); it != ie; ++it) {
2086    Diags.Report(diag::err_drv_unknown_argument) << (*it)->getAsString(*Args);
2087    Success = false;
2088  }
2089
2090  Success = ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags) && Success;
2091  Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
2092  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
2093  Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags)
2094            && Success;
2095  ParseFileSystemArgs(Res.getFileSystemOpts(), *Args);
2096  // FIXME: We shouldn't have to pass the DashX option around here
2097  InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
2098  Success = ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, DashX, Diags)
2099            && Success;
2100  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
2101  if (DashX != IK_AST && DashX != IK_LLVM_IR) {
2102    ParseLangArgs(*Res.getLangOpts(), *Args, DashX, Diags);
2103    if (Res.getFrontendOpts().ProgramAction == frontend::RewriteObjC)
2104      Res.getLangOpts()->ObjCExceptions = 1;
2105  }
2106  // FIXME: ParsePreprocessorArgs uses the FileManager to read the contents of
2107  // PCH file and find the original header name. Remove the need to do that in
2108  // ParsePreprocessorArgs and remove the FileManager
2109  // parameters from the function and the "FileManager.h" #include.
2110  FileManager FileMgr(Res.getFileSystemOpts());
2111  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, FileMgr, Diags);
2112  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
2113  ParseTargetArgs(Res.getTargetOpts(), *Args);
2114
2115  return Success;
2116}
2117
2118namespace {
2119
2120  class ModuleSignature {
2121    llvm::SmallVector<uint64_t, 16> Data;
2122    unsigned CurBit;
2123    uint64_t CurValue;
2124
2125  public:
2126    ModuleSignature() : CurBit(0), CurValue(0) { }
2127
2128    void add(uint64_t Value, unsigned Bits);
2129    void add(StringRef Value);
2130    void flush();
2131
2132    llvm::APInt getAsInteger() const;
2133  };
2134}
2135
2136void ModuleSignature::add(uint64_t Value, unsigned int NumBits) {
2137  CurValue |= Value << CurBit;
2138  if (CurBit + NumBits < 64) {
2139    CurBit += NumBits;
2140    return;
2141  }
2142
2143  // Add the current word.
2144  Data.push_back(CurValue);
2145
2146  if (CurBit)
2147    CurValue = Value >> (64-CurBit);
2148  else
2149    CurValue = 0;
2150  CurBit = (CurBit+NumBits) & 63;
2151}
2152
2153void ModuleSignature::flush() {
2154  if (CurBit == 0)
2155    return;
2156
2157  Data.push_back(CurValue);
2158  CurBit = 0;
2159  CurValue = 0;
2160}
2161
2162void ModuleSignature::add(StringRef Value) {
2163  for (StringRef::iterator I = Value.begin(), IEnd = Value.end(); I != IEnd;++I)
2164    add(*I, 8);
2165}
2166
2167llvm::APInt ModuleSignature::getAsInteger() const {
2168  return llvm::APInt(Data.size() * 64, Data);
2169}
2170
2171std::string CompilerInvocation::getModuleHash() const {
2172  ModuleSignature Signature;
2173
2174  // Start the signature with the compiler version.
2175  Signature.add(getClangFullRepositoryVersion());
2176
2177  // Extend the signature with the language options
2178#define LANGOPT(Name, Bits, Default, Description) \
2179  Signature.add(LangOpts->Name, Bits);
2180#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
2181  Signature.add(static_cast<unsigned>(LangOpts->get##Name()), Bits);
2182#define BENIGN_LANGOPT(Name, Bits, Default, Description)
2183#define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
2184#include "clang/Basic/LangOptions.def"
2185
2186  // Extend the signature with the target triple
2187  llvm::Triple T(TargetOpts.Triple);
2188  Signature.add((unsigned)T.getArch(), 5);
2189  Signature.add((unsigned)T.getVendor(), 4);
2190  Signature.add((unsigned)T.getOS(), 5);
2191  Signature.add((unsigned)T.getEnvironment(), 4);
2192
2193  // Extend the signature with preprocessor options.
2194  Signature.add(getPreprocessorOpts().UsePredefines, 1);
2195  Signature.add(getPreprocessorOpts().DetailedRecord, 1);
2196
2197  // Hash the preprocessor defines.
2198  // FIXME: This is terrible. Use an MD5 sum of the preprocessor defines.
2199  std::vector<StringRef> MacroDefs;
2200  for (std::vector<std::pair<std::string, bool/*isUndef*/> >::const_iterator
2201            I = getPreprocessorOpts().Macros.begin(),
2202         IEnd = getPreprocessorOpts().Macros.end();
2203       I != IEnd; ++I) {
2204    if (!I->second)
2205      MacroDefs.push_back(I->first);
2206  }
2207  llvm::array_pod_sort(MacroDefs.begin(), MacroDefs.end());
2208
2209  unsigned PPHashResult = 0;
2210  for (unsigned I = 0, N = MacroDefs.size(); I != N; ++I)
2211    PPHashResult = llvm::HashString(MacroDefs[I], PPHashResult);
2212  Signature.add(PPHashResult, 32);
2213
2214  // We've generated the signature. Treat it as one large APInt that we'll
2215  // encode in base-36 and return.
2216  Signature.flush();
2217  return Signature.getAsInteger().toString(36, /*Signed=*/false);
2218}
2219