CompilerInvocation.cpp revision 6362b893731ccf4480a96527db9e55e04b801503 
1//===--- CompilerInvocation.cpp -------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "clang/Frontend/CompilerInvocation.h"
11#include "clang/Basic/Diagnostic.h"
12#include "clang/Basic/Version.h"
13#include "clang/Driver/Arg.h"
14#include "clang/Driver/ArgList.h"
15#include "clang/Driver/CC1Options.h"
16#include "clang/Driver/DriverDiagnostic.h"
17#include "clang/Driver/OptTable.h"
18#include "clang/Driver/Option.h"
19#include "clang/Frontend/CompilerInvocation.h"
20#include "clang/Frontend/LangStandard.h"
21#include "clang/Frontend/PCHReader.h"
22#include "llvm/ADT/OwningPtr.h"
23#include "llvm/ADT/SmallVector.h"
24#include "llvm/ADT/StringExtras.h"
25#include "llvm/ADT/StringSwitch.h"
26#include "llvm/Support/ErrorHandling.h"
27#include "llvm/System/Host.h"
28#include "llvm/System/Path.h"
29using namespace clang;
30
31static const char *getAnalysisName(Analyses Kind) {
32  switch (Kind) {
33  default:
34    llvm_unreachable("Unknown analysis kind!");
35#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE)\
36  case NAME: return "-" CMDFLAG;
37#include "clang/Frontend/Analyses.def"
38  }
39}
40
41static const char *getAnalysisStoreName(AnalysisStores Kind) {
42  switch (Kind) {
43  default:
44    llvm_unreachable("Unknown analysis store!");
45#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
46  case NAME##Model: return CMDFLAG;
47#include "clang/Frontend/Analyses.def"
48  }
49}
50
51static const char *getAnalysisConstraintName(AnalysisConstraints Kind) {
52  switch (Kind) {
53  default:
54    llvm_unreachable("Unknown analysis constraints!");
55#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
56  case NAME##Model: return CMDFLAG;
57#include "clang/Frontend/Analyses.def"
58  }
59}
60
61static const char *getAnalysisDiagClientName(AnalysisDiagClients Kind) {
62  switch (Kind) {
63  default:
64    llvm_unreachable("Unknown analysis client!");
65#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREATE) \
66  case PD_##NAME: return CMDFLAG;
67#include "clang/Frontend/Analyses.def"
68  }
69}
70
71//===----------------------------------------------------------------------===//
72// Serialization (to args)
73//===----------------------------------------------------------------------===//
74
75static void AnalyzerOptsToArgs(const AnalyzerOptions &Opts,
76                               std::vector<std::string> &Res) {
77  for (unsigned i = 0, e = Opts.AnalysisList.size(); i != e; ++i)
78    Res.push_back(getAnalysisName(Opts.AnalysisList[i]));
79  if (Opts.AnalysisStoreOpt != BasicStoreModel) {
80    Res.push_back("-analyzer-store");
81    Res.push_back(getAnalysisStoreName(Opts.AnalysisStoreOpt));
82  }
83  if (Opts.AnalysisConstraintsOpt != RangeConstraintsModel) {
84    Res.push_back("-analyzer-constraints");
85    Res.push_back(getAnalysisConstraintName(Opts.AnalysisConstraintsOpt));
86  }
87  if (Opts.AnalysisDiagOpt != PD_HTML) {
88    Res.push_back("-analyzer-output");
89    Res.push_back(getAnalysisDiagClientName(Opts.AnalysisDiagOpt));
90  }
91  if (!Opts.AnalyzeSpecificFunction.empty()) {
92    Res.push_back("-analyze-function");
93    Res.push_back(Opts.AnalyzeSpecificFunction);
94  }
95  if (Opts.AnalyzeAll)
96    Res.push_back("-analyzer-opt-analyze-headers");
97  if (Opts.AnalyzerDisplayProgress)
98    Res.push_back("-analyzer-display-progress");
99  if (Opts.AnalyzeNestedBlocks)
100    Res.push_back("-analyzer-opt-analyze-nested-blocks");
101  if (Opts.EagerlyAssume)
102    Res.push_back("-analyzer-eagerly-assume");
103  if (!Opts.PurgeDead)
104    Res.push_back("-analyzer-no-purge-dead");
105  if (Opts.TrimGraph)
106    Res.push_back("-trim-egraph");
107  if (Opts.VisualizeEGDot)
108    Res.push_back("-analyzer-viz-egraph-graphviz");
109  if (Opts.VisualizeEGDot)
110    Res.push_back("-analyzer-viz-egraph-ubigraph");
111  if (Opts.EnableExperimentalChecks)
112    Res.push_back("-analyzer-experimental-checks");
113  if (Opts.EnableExperimentalInternalChecks)
114    Res.push_back("-analyzer-experimental-internal-checks");
115}
116
117static void CodeGenOptsToArgs(const CodeGenOptions &Opts,
118                              std::vector<std::string> &Res) {
119  if (Opts.DebugInfo)
120    Res.push_back("-g");
121  if (Opts.DisableLLVMOpts)
122    Res.push_back("-disable-llvm-optzns");
123  if (Opts.DisableRedZone)
124    Res.push_back("-disable-red-zone");
125  if (!Opts.DwarfDebugFlags.empty()) {
126    Res.push_back("-dwarf-debug-flags");
127    Res.push_back(Opts.DwarfDebugFlags);
128  }
129  if (!Opts.MergeAllConstants)
130    Res.push_back("-fno-merge-all-constants");
131  if (Opts.NoCommon)
132    Res.push_back("-fno-common");
133  if (Opts.NoImplicitFloat)
134    Res.push_back("-no-implicit-float");
135  if (Opts.OptimizeSize) {
136    assert(Opts.OptimizationLevel == 2 && "Invalid options!");
137    Res.push_back("-Os");
138  } else if (Opts.OptimizationLevel != 0)
139    Res.push_back("-O" + llvm::utostr(Opts.OptimizationLevel));
140  if (!Opts.MainFileName.empty()) {
141    Res.push_back("-main-file-name");
142    Res.push_back(Opts.MainFileName);
143  }
144  // SimplifyLibCalls is only derived.
145  // TimePasses is only derived.
146  // UnitAtATime is unused.
147  // UnrollLoops is only derived.
148  // Inlining is only derived.
149
150  if (Opts.DataSections)
151    Res.push_back("-fdata-sections");
152  if (Opts.FunctionSections)
153    Res.push_back("-ffunction-sections");
154  if (Opts.AsmVerbose)
155    Res.push_back("-masm-verbose");
156  if (!Opts.CodeModel.empty()) {
157    Res.push_back("-mcode-model");
158    Res.push_back(Opts.CodeModel);
159  }
160  if (!Opts.CXAAtExit)
161    Res.push_back("-fno-use-cxa-atexit");
162  if (Opts.CXXCtorDtorAliases)
163    Res.push_back("-mconstructor-aliases");
164  if (!Opts.DebugPass.empty()) {
165    Res.push_back("-mdebug-pass");
166    Res.push_back(Opts.DebugPass);
167  }
168  if (Opts.DisableFPElim)
169    Res.push_back("-mdisable-fp-elim");
170  if (!Opts.FloatABI.empty()) {
171    Res.push_back("-mfloat-abi");
172    Res.push_back(Opts.FloatABI);
173  }
174  if (!Opts.LimitFloatPrecision.empty()) {
175    Res.push_back("-mlimit-float-precision");
176    Res.push_back(Opts.LimitFloatPrecision);
177  }
178  if (Opts.NoZeroInitializedInBSS)
179    Res.push_back("-mno-zero-initialized-bss");
180  switch (Opts.getObjCDispatchMethod()) {
181  case CodeGenOptions::Legacy:
182    break;
183  case CodeGenOptions::Mixed:
184    Res.push_back("-fobjc-dispatch-method=mixed");
185    break;
186  case CodeGenOptions::NonLegacy:
187    Res.push_back("-fobjc-dispatch-method=non-legacy");
188    break;
189  }
190  if (Opts.SoftFloat)
191    Res.push_back("-msoft-float");
192  if (Opts.UnwindTables)
193    Res.push_back("-munwind-tables");
194  if (Opts.RelocationModel != "pic") {
195    Res.push_back("-mrelocation-model");
196    Res.push_back(Opts.RelocationModel);
197  }
198  if (!Opts.VerifyModule)
199    Res.push_back("-disable-llvm-verifier");
200}
201
202static void DependencyOutputOptsToArgs(const DependencyOutputOptions &Opts,
203                                       std::vector<std::string> &Res) {
204  if (Opts.IncludeSystemHeaders)
205    Res.push_back("-sys-header-deps");
206  if (Opts.UsePhonyTargets)
207    Res.push_back("-MP");
208  if (!Opts.OutputFile.empty()) {
209    Res.push_back("-dependency-file");
210    Res.push_back(Opts.OutputFile);
211  }
212  for (unsigned i = 0, e = Opts.Targets.size(); i != e; ++i) {
213    Res.push_back("-MT");
214    Res.push_back(Opts.Targets[i]);
215  }
216}
217
218static void DiagnosticOptsToArgs(const DiagnosticOptions &Opts,
219                                 std::vector<std::string> &Res) {
220  if (Opts.IgnoreWarnings)
221    Res.push_back("-w");
222  if (Opts.NoRewriteMacros)
223    Res.push_back("-Wno-rewrite-macros");
224  if (Opts.Pedantic)
225    Res.push_back("-pedantic");
226  if (Opts.PedanticErrors)
227    Res.push_back("-pedantic-errors");
228  if (!Opts.ShowColumn)
229    Res.push_back("-fno-show-column");
230  if (!Opts.ShowLocation)
231    Res.push_back("-fno-show-source-location");
232  if (!Opts.ShowCarets)
233    Res.push_back("-fno-caret-diagnostics");
234  if (!Opts.ShowFixits)
235    Res.push_back("-fno-diagnostics-fixit-info");
236  if (Opts.ShowSourceRanges)
237    Res.push_back("-fdiagnostics-print-source-range-info");
238  if (Opts.ShowColors)
239    Res.push_back("-fcolor-diagnostics");
240  if (Opts.VerifyDiagnostics)
241    Res.push_back("-verify");
242  if (Opts.BinaryOutput)
243    Res.push_back("-fdiagnostics-binary");
244  if (Opts.ShowOptionNames)
245    Res.push_back("-fdiagnostics-show-option");
246  if (Opts.ShowCategories == 1)
247    Res.push_back("-fdiagnostics-show-category=id");
248  else if (Opts.ShowCategories == 2)
249    Res.push_back("-fdiagnostics-show-category=name");
250  if (Opts.ErrorLimit) {
251    Res.push_back("-ferror-limit");
252    Res.push_back(llvm::utostr(Opts.ErrorLimit));
253  }
254  if (Opts.MacroBacktraceLimit
255                        != DiagnosticOptions::DefaultMacroBacktraceLimit) {
256    Res.push_back("-fmacro-backtrace-limit");
257    Res.push_back(llvm::utostr(Opts.MacroBacktraceLimit));
258  }
259  if (Opts.TemplateBacktraceLimit
260                        != DiagnosticOptions::DefaultTemplateBacktraceLimit) {
261    Res.push_back("-ftemplate-backtrace-limit");
262    Res.push_back(llvm::utostr(Opts.TemplateBacktraceLimit));
263  }
264
265  if (Opts.TabStop != DiagnosticOptions::DefaultTabStop) {
266    Res.push_back("-ftabstop");
267    Res.push_back(llvm::utostr(Opts.TabStop));
268  }
269  if (Opts.MessageLength) {
270    Res.push_back("-fmessage-length");
271    Res.push_back(llvm::utostr(Opts.MessageLength));
272  }
273  if (!Opts.DumpBuildInformation.empty()) {
274    Res.push_back("-dump-build-information");
275    Res.push_back(Opts.DumpBuildInformation);
276  }
277  for (unsigned i = 0, e = Opts.Warnings.size(); i != e; ++i)
278    Res.push_back("-W" + Opts.Warnings[i]);
279}
280
281static const char *getInputKindName(FrontendOptions::InputKind Kind) {
282  switch (Kind) {
283  case FrontendOptions::IK_None:              break;
284  case FrontendOptions::IK_AST:               return "ast";
285  case FrontendOptions::IK_Asm:               return "assembler-with-cpp";
286  case FrontendOptions::IK_C:                 return "c";
287  case FrontendOptions::IK_CXX:               return "c++";
288  case FrontendOptions::IK_ObjC:              return "objective-c";
289  case FrontendOptions::IK_ObjCXX:            return "objective-c++";
290  case FrontendOptions::IK_OpenCL:            return "cl";
291  case FrontendOptions::IK_PreprocessedC:     return "cpp-output";
292  case FrontendOptions::IK_PreprocessedCXX:   return "c++-cpp-output";
293  case FrontendOptions::IK_PreprocessedObjC:  return "objective-c-cpp-output";
294  case FrontendOptions::IK_PreprocessedObjCXX:return "objective-c++-cpp-output";
295  }
296
297  llvm_unreachable("Unexpected language kind!");
298  return 0;
299}
300
301static const char *getActionName(frontend::ActionKind Kind) {
302  switch (Kind) {
303  case frontend::PluginAction:
304  case frontend::InheritanceView:
305    llvm_unreachable("Invalid kind!");
306
307  case frontend::ASTDump:                return "-ast-dump";
308  case frontend::ASTPrint:               return "-ast-print";
309  case frontend::ASTPrintXML:            return "-ast-print-xml";
310  case frontend::ASTView:                return "-ast-view";
311  case frontend::BoostCon:               return "-boostcon";
312  case frontend::DumpRawTokens:          return "-dump-raw-tokens";
313  case frontend::DumpTokens:             return "-dump-tokens";
314  case frontend::EmitAssembly:           return "-S";
315  case frontend::EmitBC:                 return "-emit-llvm-bc";
316  case frontend::EmitHTML:               return "-emit-html";
317  case frontend::EmitLLVM:               return "-emit-llvm";
318  case frontend::EmitLLVMOnly:           return "-emit-llvm-only";
319  case frontend::EmitObj:                return "-emit-obj";
320  case frontend::FixIt:                  return "-fixit";
321  case frontend::GeneratePCH:            return "-emit-pch";
322  case frontend::GeneratePTH:            return "-emit-pth";
323  case frontend::InitOnly:               return "-init-only";
324  case frontend::ParseNoop:              return "-parse-noop";
325  case frontend::ParsePrintCallbacks:    return "-parse-print-callbacks";
326  case frontend::ParseSyntaxOnly:        return "-fsyntax-only";
327  case frontend::PrintDeclContext:       return "-print-decl-contexts";
328  case frontend::PrintPreprocessedInput: return "-E";
329  case frontend::RewriteMacros:          return "-rewrite-macros";
330  case frontend::RewriteObjC:            return "-rewrite-objc";
331  case frontend::RewriteTest:            return "-rewrite-test";
332  case frontend::RunAnalysis:            return "-analyze";
333  case frontend::RunPreprocessorOnly:    return "-Eonly";
334  }
335
336  llvm_unreachable("Unexpected language kind!");
337  return 0;
338}
339
340static void FrontendOptsToArgs(const FrontendOptions &Opts,
341                               std::vector<std::string> &Res) {
342  if (!Opts.DebugCodeCompletionPrinter)
343    Res.push_back("-no-code-completion-debug-printer");
344  if (Opts.DisableFree)
345    Res.push_back("-disable-free");
346  if (Opts.RelocatablePCH)
347    Res.push_back("-relocatable-pch");
348  if (Opts.ShowHelp)
349    Res.push_back("-help");
350  if (Opts.ShowMacrosInCodeCompletion)
351    Res.push_back("-code-completion-macros");
352  if (Opts.ShowStats)
353    Res.push_back("-print-stats");
354  if (Opts.ShowTimers)
355    Res.push_back("-ftime-report");
356  if (Opts.ShowVersion)
357    Res.push_back("-version");
358
359  bool NeedLang = false;
360  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i)
361    if (FrontendOptions::getInputKindForExtension(Opts.Inputs[i].second) !=
362        Opts.Inputs[i].first)
363      NeedLang = true;
364  if (NeedLang) {
365    Res.push_back("-x");
366    Res.push_back(getInputKindName(Opts.Inputs[0].first));
367  }
368  for (unsigned i = 0, e = Opts.Inputs.size(); i != e; ++i) {
369    assert((!NeedLang || Opts.Inputs[i].first == Opts.Inputs[0].first) &&
370           "Unable to represent this input vector!");
371    Res.push_back(Opts.Inputs[i].second);
372  }
373
374  if (!Opts.OutputFile.empty()) {
375    Res.push_back("-o");
376    Res.push_back(Opts.OutputFile);
377  }
378  if (!Opts.ViewClassInheritance.empty()) {
379    Res.push_back("-cxx-inheritance-view");
380    Res.push_back(Opts.ViewClassInheritance);
381  }
382  if (!Opts.CodeCompletionAt.FileName.empty()) {
383    Res.push_back("-code-completion-at");
384    Res.push_back(Opts.CodeCompletionAt.FileName + ":" +
385                  llvm::utostr(Opts.CodeCompletionAt.Line) + ":" +
386                  llvm::utostr(Opts.CodeCompletionAt.Column));
387  }
388  if (Opts.ProgramAction != frontend::InheritanceView &&
389      Opts.ProgramAction != frontend::PluginAction)
390    Res.push_back(getActionName(Opts.ProgramAction));
391  if (!Opts.ActionName.empty()) {
392    Res.push_back("-plugin");
393    Res.push_back(Opts.ActionName);
394  }
395  for (unsigned i = 0, e = Opts.Plugins.size(); i != e; ++i) {
396    Res.push_back("-load");
397    Res.push_back(Opts.Plugins[i]);
398  }
399  for (unsigned i = 0, e = Opts.ASTMergeFiles.size(); i != e; ++i) {
400    Res.push_back("-ast-merge");
401    Res.push_back(Opts.ASTMergeFiles[i]);
402  }
403  for (unsigned i = 0, e = Opts.LLVMArgs.size(); i != e; ++i) {
404    Res.push_back("-mllvm");
405    Res.push_back(Opts.LLVMArgs[i]);
406  }
407}
408
409static void HeaderSearchOptsToArgs(const HeaderSearchOptions &Opts,
410                                   std::vector<std::string> &Res) {
411  if (Opts.Sysroot != "/") {
412    Res.push_back("-isysroot");
413    Res.push_back(Opts.Sysroot);
414  }
415
416  /// User specified include entries.
417  for (unsigned i = 0, e = Opts.UserEntries.size(); i != e; ++i) {
418    const HeaderSearchOptions::Entry &E = Opts.UserEntries[i];
419    if (E.IsFramework && (E.Group != frontend::Angled || !E.IsUserSupplied))
420      llvm::report_fatal_error("Invalid option set!");
421    if (E.IsUserSupplied) {
422      if (E.Group == frontend::After) {
423        Res.push_back("-idirafter");
424      } else if (E.Group == frontend::Quoted) {
425        Res.push_back("-iquote");
426      } else if (E.Group == frontend::System) {
427        Res.push_back("-isystem");
428      } else {
429        assert(E.Group == frontend::Angled && "Invalid group!");
430        Res.push_back(E.IsFramework ? "-F" : "-I");
431      }
432    } else {
433      if (E.Group != frontend::Angled && E.Group != frontend::System)
434        llvm::report_fatal_error("Invalid option set!");
435      Res.push_back(E.Group == frontend::Angled ? "-iwithprefixbefore" :
436                    "-iwithprefix");
437    }
438    Res.push_back(E.Path);
439  }
440
441  if (!Opts.EnvIncPath.empty()) {
442    // FIXME: Provide an option for this, and move env detection to driver.
443    llvm::report_fatal_error("Not yet implemented!");
444  }
445  if (!Opts.CEnvIncPath.empty()) {
446    // FIXME: Provide an option for this, and move env detection to driver.
447    llvm::report_fatal_error("Not yet implemented!");
448  }
449  if (!Opts.ObjCEnvIncPath.empty()) {
450    // FIXME: Provide an option for this, and move env detection to driver.
451    llvm::report_fatal_error("Not yet implemented!");
452  }
453  if (!Opts.CXXEnvIncPath.empty()) {
454    // FIXME: Provide an option for this, and move env detection to driver.
455    llvm::report_fatal_error("Not yet implemented!");
456  }
457  if (!Opts.ObjCXXEnvIncPath.empty()) {
458    // FIXME: Provide an option for this, and move env detection to driver.
459    llvm::report_fatal_error("Not yet implemented!");
460  }
461  if (!Opts.ResourceDir.empty()) {
462    Res.push_back("-resource-dir");
463    Res.push_back(Opts.ResourceDir);
464  }
465  if (!Opts.UseStandardIncludes)
466    Res.push_back("-nostdinc");
467  if (!Opts.UseStandardCXXIncludes)
468    Res.push_back("-nostdinc++");
469  if (Opts.Verbose)
470    Res.push_back("-v");
471}
472
473static void LangOptsToArgs(const LangOptions &Opts,
474                           std::vector<std::string> &Res) {
475  LangOptions DefaultLangOpts;
476
477  // FIXME: Need to set -std to get all the implicit options.
478
479  // FIXME: We want to only pass options relative to the defaults, which
480  // requires constructing a target. :(
481  //
482  // It would be better to push the all target specific choices into the driver,
483  // so that everything below that was more uniform.
484
485  if (Opts.Trigraphs)
486    Res.push_back("-trigraphs");
487  // Implicit based on the input kind:
488  //   AsmPreprocessor, CPlusPlus, ObjC1, ObjC2, OpenCL
489  // Implicit based on the input language standard:
490  //   BCPLComment, C99, CPlusPlus0x, Digraphs, GNUInline, ImplicitInt, GNUMode
491  if (Opts.DollarIdents)
492    Res.push_back("-fdollars-in-identifiers");
493  if (Opts.GNUMode && !Opts.GNUKeywords)
494    Res.push_back("-fno-gnu-keywords");
495  if (!Opts.GNUMode && Opts.GNUKeywords)
496    Res.push_back("-fgnu-keywords");
497  if (Opts.Microsoft)
498    Res.push_back("-fms-extensions");
499  if (Opts.ObjCNonFragileABI)
500    Res.push_back("-fobjc-nonfragile-abi");
501  if (Opts.ObjCNonFragileABI2)
502    Res.push_back("-fobjc-nonfragile-abi2");
503  // NoInline is implicit.
504  if (!Opts.CXXOperatorNames)
505    Res.push_back("-fno-operator-names");
506  if (Opts.PascalStrings)
507    Res.push_back("-fpascal-strings");
508  if (Opts.CatchUndefined)
509    Res.push_back("-fcatch-undefined-behavior");
510  if (Opts.WritableStrings)
511    Res.push_back("-fwritable-strings");
512  if (Opts.ConstStrings)
513    Res.push_back("-Wwrite-strings");
514  if (!Opts.LaxVectorConversions)
515    Res.push_back("-fno-lax-vector-conversions");
516  if (Opts.AltiVec)
517    Res.push_back("-faltivec");
518  if (Opts.Exceptions)
519    Res.push_back("-fexceptions");
520  if (Opts.SjLjExceptions)
521    Res.push_back("-fsjlj-exceptions");
522  if (!Opts.RTTI)
523    Res.push_back("-fno-rtti");
524  if (!Opts.NeXTRuntime)
525    Res.push_back("-fgnu-runtime");
526  if (Opts.Freestanding)
527    Res.push_back("-ffreestanding");
528  if (Opts.NoBuiltin)
529    Res.push_back("-fno-builtin");
530  if (!Opts.AssumeSaneOperatorNew)
531    Res.push_back("-fno-assume-sane-operator-new");
532  if (!Opts.ThreadsafeStatics)
533    Res.push_back("-fno-threadsafe-statics");
534  if (Opts.POSIXThreads)
535    Res.push_back("-pthread");
536  if (Opts.Blocks)
537    Res.push_back("-fblocks");
538  if (Opts.EmitAllDecls)
539    Res.push_back("-femit-all-decls");
540  if (Opts.MathErrno)
541    Res.push_back("-fmath-errno");
542  if (Opts.OverflowChecking)
543    Res.push_back("-ftrapv");
544  if (Opts.HeinousExtensions)
545    Res.push_back("-fheinous-gnu-extensions");
546  // Optimize is implicit.
547  // OptimizeSize is implicit.
548  if (Opts.Static)
549    Res.push_back("-static-define");
550  if (Opts.DumpRecordLayouts)
551    Res.push_back("-fdump-record-layouts");
552  if (Opts.DumpVTableLayouts)
553    Res.push_back("-fdump-vtable-layouts");
554  if (Opts.NoBitFieldTypeAlign)
555    Res.push_back("-fno-bitfield-type-alignment");
556  if (Opts.SjLjExceptions)
557    Res.push_back("-fsjlj-exceptions");
558  if (Opts.PICLevel) {
559    Res.push_back("-pic-level");
560    Res.push_back(llvm::utostr(Opts.PICLevel));
561  }
562  if (Opts.ObjCGCBitmapPrint)
563    Res.push_back("-print-ivar-layout");
564  if (Opts.NoConstantCFStrings)
565    Res.push_back("-fno-constant-cfstrings");
566  if (!Opts.AccessControl)
567    Res.push_back("-fno-access-control");
568  if (!Opts.CharIsSigned)
569    Res.push_back("-fno-signed-char");
570  if (Opts.ShortWChar)
571    Res.push_back("-fshort-wchar");
572  if (!Opts.ElideConstructors)
573    Res.push_back("-fno-elide-constructors");
574  if (Opts.getGCMode() != LangOptions::NonGC) {
575    if (Opts.getGCMode() == LangOptions::HybridGC) {
576      Res.push_back("-fobjc-gc");
577    } else {
578      assert(Opts.getGCMode() == LangOptions::GCOnly && "Invalid GC mode!");
579      Res.push_back("-fobjc-gc-only");
580    }
581  }
582  if (Opts.getVisibilityMode() != LangOptions::Default) {
583    Res.push_back("-fvisibility");
584    if (Opts.getVisibilityMode() == LangOptions::Hidden) {
585      Res.push_back("hidden");
586    } else {
587      assert(Opts.getVisibilityMode() == LangOptions::Protected &&
588             "Invalid visibility!");
589      Res.push_back("protected");
590    }
591  }
592  if (Opts.getStackProtectorMode() != 0) {
593    Res.push_back("-stack-protector");
594    Res.push_back(llvm::utostr(Opts.getStackProtectorMode()));
595  }
596  if (Opts.InstantiationDepth != DefaultLangOpts.InstantiationDepth) {
597    Res.push_back("-ftemplate-depth");
598    Res.push_back(llvm::utostr(Opts.InstantiationDepth));
599  }
600  if (!Opts.ObjCConstantStringClass.empty()) {
601    Res.push_back("-fconstant-string-class");
602    Res.push_back(Opts.ObjCConstantStringClass);
603  }
604}
605
606static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
607                                   std::vector<std::string> &Res) {
608  for (unsigned i = 0, e = Opts.Macros.size(); i != e; ++i)
609    Res.push_back(std::string(Opts.Macros[i].second ? "-U" : "-D") +
610                  Opts.Macros[i].first);
611  for (unsigned i = 0, e = Opts.Includes.size(); i != e; ++i) {
612    // FIXME: We need to avoid reincluding the implicit PCH and PTH includes.
613    Res.push_back("-include");
614    Res.push_back(Opts.Includes[i]);
615  }
616  for (unsigned i = 0, e = Opts.MacroIncludes.size(); i != e; ++i) {
617    Res.push_back("-imacros");
618    Res.push_back(Opts.MacroIncludes[i]);
619  }
620  if (!Opts.UsePredefines)
621    Res.push_back("-undef");
622  if (Opts.DetailedRecord)
623    Res.push_back("-detailed-preprocessing-record");
624  if (!Opts.ImplicitPCHInclude.empty()) {
625    Res.push_back("-include-pch");
626    Res.push_back(Opts.ImplicitPCHInclude);
627  }
628  if (!Opts.ImplicitPTHInclude.empty()) {
629    Res.push_back("-include-pth");
630    Res.push_back(Opts.ImplicitPTHInclude);
631  }
632  if (!Opts.TokenCache.empty()) {
633    if (Opts.ImplicitPTHInclude.empty()) {
634      Res.push_back("-token-cache");
635      Res.push_back(Opts.TokenCache);
636    } else
637      assert(Opts.ImplicitPTHInclude == Opts.TokenCache &&
638             "Unsupported option combination!");
639  }
640  for (unsigned i = 0, e = Opts.RemappedFiles.size(); i != e; ++i) {
641    Res.push_back("-remap-file");
642    Res.push_back(Opts.RemappedFiles[i].first + ";" +
643                  Opts.RemappedFiles[i].second);
644  }
645}
646
647static void PreprocessorOutputOptsToArgs(const PreprocessorOutputOptions &Opts,
648                                         std::vector<std::string> &Res) {
649  if (!Opts.ShowCPP && !Opts.ShowMacros)
650    llvm::report_fatal_error("Invalid option combination!");
651
652  if (Opts.ShowCPP && Opts.ShowMacros)
653    Res.push_back("-dD");
654  else if (!Opts.ShowCPP && Opts.ShowMacros)
655    Res.push_back("-dM");
656
657  if (!Opts.ShowLineMarkers)
658    Res.push_back("-P");
659  if (Opts.ShowComments)
660    Res.push_back("-C");
661  if (Opts.ShowMacroComments)
662    Res.push_back("-CC");
663}
664
665static void TargetOptsToArgs(const TargetOptions &Opts,
666                             std::vector<std::string> &Res) {
667  Res.push_back("-triple");
668  Res.push_back(Opts.Triple);
669  if (!Opts.CPU.empty()) {
670    Res.push_back("-target-cpu");
671    Res.push_back(Opts.CPU);
672  }
673  if (!Opts.ABI.empty()) {
674    Res.push_back("-target-abi");
675    Res.push_back(Opts.ABI);
676  }
677  for (unsigned i = 0, e = Opts.Features.size(); i != e; ++i) {
678    Res.push_back("-target-feature");
679    Res.push_back(Opts.Features[i]);
680  }
681}
682
683void CompilerInvocation::toArgs(std::vector<std::string> &Res) {
684  AnalyzerOptsToArgs(getAnalyzerOpts(), Res);
685  CodeGenOptsToArgs(getCodeGenOpts(), Res);
686  DependencyOutputOptsToArgs(getDependencyOutputOpts(), Res);
687  DiagnosticOptsToArgs(getDiagnosticOpts(), Res);
688  FrontendOptsToArgs(getFrontendOpts(), Res);
689  HeaderSearchOptsToArgs(getHeaderSearchOpts(), Res);
690  LangOptsToArgs(getLangOpts(), Res);
691  PreprocessorOptsToArgs(getPreprocessorOpts(), Res);
692  PreprocessorOutputOptsToArgs(getPreprocessorOutputOpts(), Res);
693  TargetOptsToArgs(getTargetOpts(), Res);
694}
695
696//===----------------------------------------------------------------------===//
697// Deserialization (to args)
698//===----------------------------------------------------------------------===//
699
700using namespace clang::driver;
701using namespace clang::driver::cc1options;
702
703static llvm::StringRef getLastArgValue(ArgList &Args, cc1options::ID ID,
704                                       llvm::StringRef Default = "") {
705  if (Arg *A = Args.getLastArg(ID))
706    return A->getValue(Args);
707  return Default;
708}
709
710static int getLastArgIntValue(ArgList &Args, cc1options::ID ID,
711                              int Default, Diagnostic &Diags) {
712  Arg *A = Args.getLastArg(ID);
713  if (!A)
714    return Default;
715
716  int Res = Default;
717  if (llvm::StringRef(A->getValue(Args)).getAsInteger(10, Res))
718    Diags.Report(diag::err_drv_invalid_int_value)
719        << A->getAsString(Args) << A->getValue(Args);
720
721  return Res;
722}
723
724static std::vector<std::string>
725getAllArgValues(ArgList &Args, cc1options::ID ID) {
726  llvm::SmallVector<const char *, 16> Values;
727  Args.AddAllArgValues(Values, ID);
728  return std::vector<std::string>(Values.begin(), Values.end());
729}
730
731//
732
733static void ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
734                              Diagnostic &Diags) {
735  using namespace cc1options;
736
737  Opts.AnalysisList.clear();
738#define ANALYSIS(NAME, CMDFLAG, DESC, SCOPE) \
739  if (Args.hasArg(OPT_analysis_##NAME)) Opts.AnalysisList.push_back(NAME);
740#include "clang/Frontend/Analyses.def"
741
742  if (Arg *A = Args.getLastArg(OPT_analyzer_store)) {
743    llvm::StringRef Name = A->getValue(Args);
744    AnalysisStores Value = llvm::StringSwitch<AnalysisStores>(Name)
745#define ANALYSIS_STORE(NAME, CMDFLAG, DESC, CREATFN) \
746      .Case(CMDFLAG, NAME##Model)
747#include "clang/Frontend/Analyses.def"
748      .Default(NumStores);
749    // FIXME: Error handling.
750    if (Value == NumStores)
751      Diags.Report(diag::err_drv_invalid_value)
752        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
753    else
754      Opts.AnalysisStoreOpt = Value;
755  }
756
757  if (Arg *A = Args.getLastArg(OPT_analyzer_constraints)) {
758    llvm::StringRef Name = A->getValue(Args);
759    AnalysisConstraints Value = llvm::StringSwitch<AnalysisConstraints>(Name)
760#define ANALYSIS_CONSTRAINTS(NAME, CMDFLAG, DESC, CREATFN) \
761      .Case(CMDFLAG, NAME##Model)
762#include "clang/Frontend/Analyses.def"
763      .Default(NumConstraints);
764    // FIXME: Error handling.
765    if (Value == NumConstraints)
766      Diags.Report(diag::err_drv_invalid_value)
767        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
768    else
769      Opts.AnalysisConstraintsOpt = Value;
770  }
771
772  if (Arg *A = Args.getLastArg(OPT_analyzer_output)) {
773    llvm::StringRef Name = A->getValue(Args);
774    AnalysisDiagClients Value = llvm::StringSwitch<AnalysisDiagClients>(Name)
775#define ANALYSIS_DIAGNOSTICS(NAME, CMDFLAG, DESC, CREATFN, AUTOCREAT) \
776      .Case(CMDFLAG, PD_##NAME)
777#include "clang/Frontend/Analyses.def"
778      .Default(NUM_ANALYSIS_DIAG_CLIENTS);
779    // FIXME: Error handling.
780    if (Value == NUM_ANALYSIS_DIAG_CLIENTS)
781      Diags.Report(diag::err_drv_invalid_value)
782        << Args.getLastArg(OPT_O)->getAsString(Args) << Name;
783    else
784      Opts.AnalysisDiagOpt = Value;
785  }
786
787  Opts.VisualizeEGDot = Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
788  Opts.VisualizeEGUbi = Args.hasArg(OPT_analyzer_viz_egraph_ubigraph);
789  Opts.AnalyzeAll = Args.hasArg(OPT_analyzer_opt_analyze_headers);
790  Opts.AnalyzerDisplayProgress = Args.hasArg(OPT_analyzer_display_progress);
791  Opts.AnalyzeNestedBlocks =
792    Args.hasArg(OPT_analyzer_opt_analyze_nested_blocks);
793  Opts.PurgeDead = !Args.hasArg(OPT_analyzer_no_purge_dead);
794  Opts.EagerlyAssume = Args.hasArg(OPT_analyzer_eagerly_assume);
795  Opts.AnalyzeSpecificFunction = getLastArgValue(Args, OPT_analyze_function);
796  Opts.EnableExperimentalChecks = Args.hasArg(OPT_analyzer_experimental_checks);
797  Opts.EnableExperimentalInternalChecks =
798    Args.hasArg(OPT_analyzer_experimental_internal_checks);
799  Opts.TrimGraph = Args.hasArg(OPT_trim_egraph);
800  Opts.MaxNodes = getLastArgIntValue(Args, OPT_analyzer_max_nodes,150000,Diags);
801  Opts.MaxLoop = getLastArgIntValue(Args, OPT_analyzer_max_loop, 3, Diags);
802  Opts.InlineCall = Args.hasArg(OPT_analyzer_inline_call);
803}
804
805static void ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args,
806                             Diagnostic &Diags) {
807  using namespace cc1options;
808  // -Os implies -O2
809  if (Args.hasArg(OPT_Os))
810    Opts.OptimizationLevel = 2;
811  else {
812    Opts.OptimizationLevel = getLastArgIntValue(Args, OPT_O, 0, Diags);
813    if (Opts.OptimizationLevel > 3) {
814      Diags.Report(diag::err_drv_invalid_value)
815        << Args.getLastArg(OPT_O)->getAsString(Args) << Opts.OptimizationLevel;
816      Opts.OptimizationLevel = 3;
817    }
818  }
819
820  // We must always run at least the always inlining pass.
821  Opts.Inlining = (Opts.OptimizationLevel > 1) ? CodeGenOptions::NormalInlining
822    : CodeGenOptions::OnlyAlwaysInlining;
823
824  Opts.DebugInfo = Args.hasArg(OPT_g);
825  Opts.DisableLLVMOpts = Args.hasArg(OPT_disable_llvm_optzns);
826  Opts.DisableRedZone = Args.hasArg(OPT_disable_red_zone);
827  Opts.DwarfDebugFlags = getLastArgValue(Args, OPT_dwarf_debug_flags);
828  Opts.MergeAllConstants = !Args.hasArg(OPT_fno_merge_all_constants);
829  Opts.NoCommon = Args.hasArg(OPT_fno_common);
830  Opts.NoImplicitFloat = Args.hasArg(OPT_no_implicit_float);
831  Opts.OptimizeSize = Args.hasArg(OPT_Os);
832  Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !Opts.OptimizeSize);
833
834  Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
835  Opts.CXAAtExit = !Args.hasArg(OPT_fno_use_cxa_atexit);
836  Opts.CXXCtorDtorAliases = Args.hasArg(OPT_mconstructor_aliases);
837  Opts.CodeModel = getLastArgValue(Args, OPT_mcode_model);
838  Opts.DebugPass = getLastArgValue(Args, OPT_mdebug_pass);
839  Opts.DisableFPElim = Args.hasArg(OPT_mdisable_fp_elim);
840  Opts.FloatABI = getLastArgValue(Args, OPT_mfloat_abi);
841  Opts.LimitFloatPrecision = getLastArgValue(Args, OPT_mlimit_float_precision);
842  Opts.NoZeroInitializedInBSS = Args.hasArg(OPT_mno_zero_initialized_in_bss);
843  Opts.SoftFloat = Args.hasArg(OPT_msoft_float);
844  Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
845  Opts.RelocationModel = getLastArgValue(Args, OPT_mrelocation_model, "pic");
846
847  Opts.FunctionSections = Args.hasArg(OPT_ffunction_sections);
848  Opts.DataSections = Args.hasArg(OPT_fdata_sections);
849
850  Opts.MainFileName = getLastArgValue(Args, OPT_main_file_name);
851  Opts.VerifyModule = !Args.hasArg(OPT_disable_llvm_verifier);
852
853  if (Arg *A = Args.getLastArg(OPT_fobjc_dispatch_method_EQ)) {
854    llvm::StringRef Name = A->getValue(Args);
855    unsigned Method = llvm::StringSwitch<unsigned>(Name)
856      .Case("legacy", CodeGenOptions::Legacy)
857      .Case("non-legacy", CodeGenOptions::NonLegacy)
858      .Case("mixed", CodeGenOptions::Mixed)
859      .Default(~0U);
860    if (Method == ~0U)
861      Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Name;
862    else
863      Opts.ObjCDispatchMethod = Method;
864  }
865}
866
867static void ParseDependencyOutputArgs(DependencyOutputOptions &Opts,
868                                      ArgList &Args) {
869  using namespace cc1options;
870  Opts.OutputFile = getLastArgValue(Args, OPT_dependency_file);
871  Opts.Targets = getAllArgValues(Args, OPT_MT);
872  Opts.IncludeSystemHeaders = Args.hasArg(OPT_sys_header_deps);
873  Opts.UsePhonyTargets = Args.hasArg(OPT_MP);
874}
875
876static void ParseDiagnosticArgs(DiagnosticOptions &Opts, ArgList &Args,
877                                Diagnostic &Diags) {
878  using namespace cc1options;
879  Opts.IgnoreWarnings = Args.hasArg(OPT_w);
880  Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
881  Opts.Pedantic = Args.hasArg(OPT_pedantic);
882  Opts.PedanticErrors = Args.hasArg(OPT_pedantic_errors);
883  Opts.ShowCarets = !Args.hasArg(OPT_fno_caret_diagnostics);
884  Opts.ShowColors = Args.hasArg(OPT_fcolor_diagnostics);
885  Opts.ShowColumn = !Args.hasArg(OPT_fno_show_column);
886  Opts.ShowFixits = !Args.hasArg(OPT_fno_diagnostics_fixit_info);
887  Opts.ShowLocation = !Args.hasArg(OPT_fno_show_source_location);
888  Opts.ShowOptionNames = Args.hasArg(OPT_fdiagnostics_show_option);
889
890  llvm::StringRef ShowCategory =
891    getLastArgValue(Args, OPT_fdiagnostics_show_category, "none");
892  if (ShowCategory == "none")
893    Opts.ShowCategories = 0;
894  else if (ShowCategory == "id")
895    Opts.ShowCategories = 1;
896  else if (ShowCategory == "name")
897    Opts.ShowCategories = 2;
898  else
899    Diags.Report(diag::err_drv_invalid_value)
900      << Args.getLastArg(OPT_fdiagnostics_show_category)->getAsString(Args)
901      << ShowCategory;
902
903  Opts.ShowSourceRanges = Args.hasArg(OPT_fdiagnostics_print_source_range_info);
904  Opts.VerifyDiagnostics = Args.hasArg(OPT_verify);
905  Opts.BinaryOutput = Args.hasArg(OPT_fdiagnostics_binary);
906  Opts.ErrorLimit = getLastArgIntValue(Args, OPT_ferror_limit, 0, Diags);
907  Opts.MacroBacktraceLimit
908    = getLastArgIntValue(Args, OPT_fmacro_backtrace_limit,
909                         DiagnosticOptions::DefaultMacroBacktraceLimit, Diags);
910  Opts.TemplateBacktraceLimit
911    = getLastArgIntValue(Args, OPT_ftemplate_backtrace_limit,
912                         DiagnosticOptions::DefaultTemplateBacktraceLimit,
913                         Diags);
914  Opts.TabStop = getLastArgIntValue(Args, OPT_ftabstop,
915                                    DiagnosticOptions::DefaultTabStop, Diags);
916  if (Opts.TabStop == 0 || Opts.TabStop > DiagnosticOptions::MaxTabStop) {
917    Diags.Report(diag::warn_ignoring_ftabstop_value)
918      << Opts.TabStop << DiagnosticOptions::DefaultTabStop;
919    Opts.TabStop = DiagnosticOptions::DefaultTabStop;
920  }
921  Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
922  Opts.DumpBuildInformation = getLastArgValue(Args, OPT_dump_build_information);
923  Opts.Warnings = getAllArgValues(Args, OPT_W);
924}
925
926static FrontendOptions::InputKind
927ParseFrontendArgs(FrontendOptions &Opts, ArgList &Args, Diagnostic &Diags) {
928  using namespace cc1options;
929  Opts.ProgramAction = frontend::ParseSyntaxOnly;
930  if (const Arg *A = Args.getLastArg(OPT_Action_Group)) {
931    switch (A->getOption().getID()) {
932    default:
933      assert(0 && "Invalid option in group!");
934    case OPT_ast_dump:
935      Opts.ProgramAction = frontend::ASTDump; break;
936    case OPT_ast_print:
937      Opts.ProgramAction = frontend::ASTPrint; break;
938    case OPT_ast_print_xml:
939      Opts.ProgramAction = frontend::ASTPrintXML; break;
940    case OPT_ast_view:
941      Opts.ProgramAction = frontend::ASTView; break;
942    case OPT_boostcon:
943      Opts.ProgramAction = frontend::BoostCon; break;
944    case OPT_dump_raw_tokens:
945      Opts.ProgramAction = frontend::DumpRawTokens; break;
946    case OPT_dump_tokens:
947      Opts.ProgramAction = frontend::DumpTokens; break;
948    case OPT_S:
949      Opts.ProgramAction = frontend::EmitAssembly; break;
950    case OPT_emit_llvm_bc:
951      Opts.ProgramAction = frontend::EmitBC; break;
952    case OPT_emit_html:
953      Opts.ProgramAction = frontend::EmitHTML; break;
954    case OPT_emit_llvm:
955      Opts.ProgramAction = frontend::EmitLLVM; break;
956    case OPT_emit_llvm_only:
957      Opts.ProgramAction = frontend::EmitLLVMOnly; break;
958    case OPT_emit_obj:
959      Opts.ProgramAction = frontend::EmitObj; break;
960    case OPT_fixit_EQ:
961      Opts.FixItSuffix = A->getValue(Args);
962      // fall-through!
963    case OPT_fixit:
964      Opts.ProgramAction = frontend::FixIt; break;
965    case OPT_emit_pch:
966      Opts.ProgramAction = frontend::GeneratePCH; break;
967    case OPT_emit_pth:
968      Opts.ProgramAction = frontend::GeneratePTH; break;
969    case OPT_init_only:
970      Opts.ProgramAction = frontend::InitOnly; break;
971    case OPT_parse_noop:
972      Opts.ProgramAction = frontend::ParseNoop; break;
973    case OPT_parse_print_callbacks:
974      Opts.ProgramAction = frontend::ParsePrintCallbacks; break;
975    case OPT_fsyntax_only:
976      Opts.ProgramAction = frontend::ParseSyntaxOnly; break;
977    case OPT_print_decl_contexts:
978      Opts.ProgramAction = frontend::PrintDeclContext; break;
979    case OPT_E:
980      Opts.ProgramAction = frontend::PrintPreprocessedInput; break;
981    case OPT_rewrite_macros:
982      Opts.ProgramAction = frontend::RewriteMacros; break;
983    case OPT_rewrite_objc:
984      Opts.ProgramAction = frontend::RewriteObjC; break;
985    case OPT_rewrite_test:
986      Opts.ProgramAction = frontend::RewriteTest; break;
987    case OPT_analyze:
988      Opts.ProgramAction = frontend::RunAnalysis; break;
989    case OPT_Eonly:
990      Opts.ProgramAction = frontend::RunPreprocessorOnly; break;
991    }
992  }
993  if (const Arg *A = Args.getLastArg(OPT_plugin)) {
994    Opts.ProgramAction = frontend::PluginAction;
995    Opts.ActionName = A->getValue(Args);
996  }
997
998  if (const Arg *A = Args.getLastArg(OPT_code_completion_at)) {
999    Opts.CodeCompletionAt =
1000      ParsedSourceLocation::FromString(A->getValue(Args));
1001    if (Opts.CodeCompletionAt.FileName.empty())
1002      Diags.Report(diag::err_drv_invalid_value)
1003        << A->getAsString(Args) << A->getValue(Args);
1004  }
1005  Opts.DebugCodeCompletionPrinter =
1006    !Args.hasArg(OPT_no_code_completion_debug_printer);
1007  Opts.DisableFree = Args.hasArg(OPT_disable_free);
1008
1009  Opts.OutputFile = getLastArgValue(Args, OPT_o);
1010  Opts.Plugins = getAllArgValues(Args, OPT_load);
1011  Opts.RelocatablePCH = Args.hasArg(OPT_relocatable_pch);
1012  Opts.ShowHelp = Args.hasArg(OPT_help);
1013  Opts.ShowMacrosInCodeCompletion = Args.hasArg(OPT_code_completion_macros);
1014  Opts.ShowStats = Args.hasArg(OPT_print_stats);
1015  Opts.ShowTimers = Args.hasArg(OPT_ftime_report);
1016  Opts.ShowVersion = Args.hasArg(OPT_version);
1017  Opts.ViewClassInheritance = getLastArgValue(Args, OPT_cxx_inheritance_view);
1018  Opts.ASTMergeFiles = getAllArgValues(Args, OPT_ast_merge);
1019  Opts.LLVMArgs = getAllArgValues(Args, OPT_mllvm);
1020
1021  FrontendOptions::InputKind DashX = FrontendOptions::IK_None;
1022  if (const Arg *A = Args.getLastArg(OPT_x)) {
1023    DashX = llvm::StringSwitch<FrontendOptions::InputKind>(A->getValue(Args))
1024      .Case("c", FrontendOptions::IK_C)
1025      .Case("cl", FrontendOptions::IK_OpenCL)
1026      .Case("c", FrontendOptions::IK_C)
1027      .Case("cl", FrontendOptions::IK_OpenCL)
1028      .Case("c++", FrontendOptions::IK_CXX)
1029      .Case("objective-c", FrontendOptions::IK_ObjC)
1030      .Case("objective-c++", FrontendOptions::IK_ObjCXX)
1031      .Case("cpp-output", FrontendOptions::IK_PreprocessedC)
1032      .Case("assembler-with-cpp", FrontendOptions::IK_Asm)
1033      .Case("c++-cpp-output", FrontendOptions::IK_PreprocessedCXX)
1034      .Case("objective-c-cpp-output", FrontendOptions::IK_PreprocessedObjC)
1035      .Case("objective-c++-cpp-output", FrontendOptions::IK_PreprocessedObjCXX)
1036      .Case("c-header", FrontendOptions::IK_C)
1037      .Case("objective-c-header", FrontendOptions::IK_ObjC)
1038      .Case("c++-header", FrontendOptions::IK_CXX)
1039      .Case("objective-c++-header", FrontendOptions::IK_ObjCXX)
1040      .Case("ast", FrontendOptions::IK_AST)
1041      .Default(FrontendOptions::IK_None);
1042    if (DashX == FrontendOptions::IK_None)
1043      Diags.Report(diag::err_drv_invalid_value)
1044        << A->getAsString(Args) << A->getValue(Args);
1045  }
1046
1047  // '-' is the default input if none is given.
1048  std::vector<std::string> Inputs = getAllArgValues(Args, OPT_INPUT);
1049  Opts.Inputs.clear();
1050  if (Inputs.empty())
1051    Inputs.push_back("-");
1052  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1053    FrontendOptions::InputKind IK = DashX;
1054    if (IK == FrontendOptions::IK_None) {
1055      IK = FrontendOptions::getInputKindForExtension(
1056        llvm::StringRef(Inputs[i]).rsplit('.').second);
1057      // FIXME: Remove this hack.
1058      if (i == 0)
1059        DashX = IK;
1060    }
1061    Opts.Inputs.push_back(std::make_pair(IK, Inputs[i]));
1062  }
1063
1064  return DashX;
1065}
1066
1067std::string CompilerInvocation::GetResourcesPath(const char *Argv0,
1068                                                 void *MainAddr) {
1069  llvm::sys::Path P = llvm::sys::Path::GetMainExecutable(Argv0, MainAddr);
1070
1071  if (!P.isEmpty()) {
1072    P.eraseComponent();  // Remove /clang from foo/bin/clang
1073    P.eraseComponent();  // Remove /bin   from foo/bin
1074
1075    // Get foo/lib/clang/<version>/include
1076    P.appendComponent("lib");
1077    P.appendComponent("clang");
1078    P.appendComponent(CLANG_VERSION_STRING);
1079  }
1080
1081  return P.str();
1082}
1083
1084static void ParseHeaderSearchArgs(HeaderSearchOptions &Opts, ArgList &Args) {
1085  using namespace cc1options;
1086  Opts.Sysroot = getLastArgValue(Args, OPT_isysroot, "/");
1087  Opts.Verbose = Args.hasArg(OPT_v);
1088  Opts.UseBuiltinIncludes = !Args.hasArg(OPT_nobuiltininc);
1089  Opts.UseStandardIncludes = !Args.hasArg(OPT_nostdinc);
1090  Opts.UseStandardCXXIncludes = !Args.hasArg(OPT_nostdincxx);
1091  Opts.ResourceDir = getLastArgValue(Args, OPT_resource_dir);
1092
1093  // Add -I... and -F... options in order.
1094  for (arg_iterator it = Args.filtered_begin(OPT_I, OPT_F),
1095         ie = Args.filtered_end(); it != ie; ++it)
1096    Opts.AddPath(it->getValue(Args), frontend::Angled, true,
1097                 /*IsFramework=*/ it->getOption().matches(OPT_F));
1098
1099  // Add -iprefix/-iwith-prefix/-iwithprefixbefore options.
1100  llvm::StringRef Prefix = ""; // FIXME: This isn't the correct default prefix.
1101  for (arg_iterator it = Args.filtered_begin(OPT_iprefix, OPT_iwithprefix,
1102                                             OPT_iwithprefixbefore),
1103         ie = Args.filtered_end(); it != ie; ++it) {
1104    if (it->getOption().matches(OPT_iprefix))
1105      Prefix = it->getValue(Args);
1106    else if (it->getOption().matches(OPT_iwithprefix))
1107      Opts.AddPath(Prefix.str() + it->getValue(Args),
1108                   frontend::System, false, false);
1109    else
1110      Opts.AddPath(Prefix.str() + it->getValue(Args),
1111                   frontend::Angled, false, false);
1112  }
1113
1114  for (arg_iterator it = Args.filtered_begin(OPT_idirafter),
1115         ie = Args.filtered_end(); it != ie; ++it)
1116    Opts.AddPath(it->getValue(Args), frontend::After, true, false);
1117  for (arg_iterator it = Args.filtered_begin(OPT_iquote),
1118         ie = Args.filtered_end(); it != ie; ++it)
1119    Opts.AddPath(it->getValue(Args), frontend::Quoted, true, false);
1120  for (arg_iterator it = Args.filtered_begin(OPT_isystem),
1121         ie = Args.filtered_end(); it != ie; ++it)
1122    Opts.AddPath(it->getValue(Args), frontend::System, true, false);
1123
1124  // FIXME: Need options for the various environment variables!
1125}
1126
1127static void ParseLangArgs(LangOptions &Opts, ArgList &Args,
1128                          FrontendOptions::InputKind IK,
1129                          Diagnostic &Diags) {
1130  // FIXME: Cleanup per-file based stuff.
1131
1132  // Set some properties which depend soley on the input kind; it would be nice
1133  // to move these to the language standard, and have the driver resolve the
1134  // input kind + language standard.
1135  if (IK == FrontendOptions::IK_Asm) {
1136    Opts.AsmPreprocessor = 1;
1137  } else if (IK == FrontendOptions::IK_ObjC ||
1138             IK == FrontendOptions::IK_ObjCXX ||
1139             IK == FrontendOptions::IK_PreprocessedObjC ||
1140             IK == FrontendOptions::IK_PreprocessedObjCXX) {
1141    Opts.ObjC1 = Opts.ObjC2 = 1;
1142  }
1143
1144  LangStandard::Kind LangStd = LangStandard::lang_unspecified;
1145  if (const Arg *A = Args.getLastArg(OPT_std_EQ)) {
1146    LangStd = llvm::StringSwitch<LangStandard::Kind>(A->getValue(Args))
1147#define LANGSTANDARD(id, name, desc, features) \
1148      .Case(name, LangStandard::lang_##id)
1149#include "clang/Frontend/LangStandards.def"
1150      .Default(LangStandard::lang_unspecified);
1151    if (LangStd == LangStandard::lang_unspecified)
1152      Diags.Report(diag::err_drv_invalid_value)
1153        << A->getAsString(Args) << A->getValue(Args);
1154  }
1155
1156  if (LangStd == LangStandard::lang_unspecified) {
1157    // Based on the base language, pick one.
1158    switch (IK) {
1159    case FrontendOptions::IK_None:
1160    case FrontendOptions::IK_AST:
1161      assert(0 && "Invalid input kind!");
1162    case FrontendOptions::IK_OpenCL:
1163      LangStd = LangStandard::lang_opencl;
1164      break;
1165    case FrontendOptions::IK_Asm:
1166    case FrontendOptions::IK_C:
1167    case FrontendOptions::IK_PreprocessedC:
1168    case FrontendOptions::IK_ObjC:
1169    case FrontendOptions::IK_PreprocessedObjC:
1170      LangStd = LangStandard::lang_gnu99;
1171      break;
1172    case FrontendOptions::IK_CXX:
1173    case FrontendOptions::IK_PreprocessedCXX:
1174    case FrontendOptions::IK_ObjCXX:
1175    case FrontendOptions::IK_PreprocessedObjCXX:
1176      LangStd = LangStandard::lang_gnucxx98;
1177      break;
1178    }
1179  }
1180
1181  const LangStandard &Std = LangStandard::getLangStandardForKind(LangStd);
1182  Opts.BCPLComment = Std.hasBCPLComments();
1183  Opts.C99 = Std.isC99();
1184  Opts.CPlusPlus = Std.isCPlusPlus();
1185  Opts.CPlusPlus0x = Std.isCPlusPlus0x();
1186  Opts.Digraphs = Std.hasDigraphs();
1187  Opts.GNUMode = Std.isGNUMode();
1188  Opts.GNUInline = !Std.isC99();
1189  Opts.HexFloats = Std.hasHexFloats();
1190  Opts.ImplicitInt = Std.hasImplicitInt();
1191
1192  // OpenCL has some additional defaults.
1193  if (LangStd == LangStandard::lang_opencl) {
1194    Opts.OpenCL = 1;
1195    Opts.AltiVec = 1;
1196    Opts.CXXOperatorNames = 1;
1197    Opts.LaxVectorConversions = 1;
1198  }
1199
1200  // OpenCL and C++ both have bool, true, false keywords.
1201  Opts.Bool = Opts.OpenCL || Opts.CPlusPlus;
1202
1203  // We abuse '-f[no-]gnu-keywords' to force overriding all GNU-extension
1204  // keywords. This behavior is provided by GCC's poorly named '-fasm' flag,
1205  // while a subset (the non-C++ GNU keywords) is provided by GCC's
1206  // '-fgnu-keywords'. Clang conflates the two for simplicity under the single
1207  // name, as it doesn't seem a useful distinction.
1208  Opts.GNUKeywords = Args.hasFlag(OPT_fgnu_keywords, OPT_fno_gnu_keywords,
1209                                  Opts.GNUMode);
1210
1211  if (Opts.CPlusPlus)
1212    Opts.CXXOperatorNames = !Args.hasArg(OPT_fno_operator_names);
1213
1214  if (Args.hasArg(OPT_fobjc_gc_only))
1215    Opts.setGCMode(LangOptions::GCOnly);
1216  else if (Args.hasArg(OPT_fobjc_gc))
1217    Opts.setGCMode(LangOptions::HybridGC);
1218
1219  if (Args.hasArg(OPT_print_ivar_layout))
1220    Opts.ObjCGCBitmapPrint = 1;
1221  if (Args.hasArg(OPT_fno_constant_cfstrings))
1222    Opts.NoConstantCFStrings = 1;
1223
1224  if (Args.hasArg(OPT_faltivec))
1225    Opts.AltiVec = 1;
1226
1227  if (Args.hasArg(OPT_pthread))
1228    Opts.POSIXThreads = 1;
1229
1230  llvm::StringRef Vis = getLastArgValue(Args, OPT_fvisibility,
1231                                        "default");
1232  if (Vis == "default")
1233    Opts.setVisibilityMode(LangOptions::Default);
1234  else if (Vis == "hidden")
1235    Opts.setVisibilityMode(LangOptions::Hidden);
1236  else if (Vis == "protected")
1237    Opts.setVisibilityMode(LangOptions::Protected);
1238  else
1239    Diags.Report(diag::err_drv_invalid_value)
1240      << Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
1241
1242  Opts.OverflowChecking = Args.hasArg(OPT_ftrapv);
1243
1244  // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs
1245  // is specified, or -std is set to a conforming mode.
1246  Opts.Trigraphs = !Opts.GNUMode;
1247  if (Args.hasArg(OPT_trigraphs))
1248    Opts.Trigraphs = 1;
1249
1250  Opts.DollarIdents = Args.hasFlag(OPT_fdollars_in_identifiers,
1251                                   OPT_fno_dollars_in_identifiers,
1252                                   !Opts.AsmPreprocessor);
1253  Opts.PascalStrings = Args.hasArg(OPT_fpascal_strings);
1254  Opts.Microsoft = Args.hasArg(OPT_fms_extensions);
1255  Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
1256  Opts.ConstStrings = Args.hasArg(OPT_Wwrite_strings);
1257  if (Args.hasArg(OPT_fno_lax_vector_conversions))
1258    Opts.LaxVectorConversions = 0;
1259  if (Args.hasArg(OPT_fno_threadsafe_statics))
1260    Opts.ThreadsafeStatics = 0;
1261  Opts.Exceptions = Args.hasArg(OPT_fexceptions);
1262  Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
1263  Opts.Blocks = Args.hasArg(OPT_fblocks);
1264  Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
1265  Opts.ShortWChar = Args.hasArg(OPT_fshort_wchar);
1266  Opts.Freestanding = Args.hasArg(OPT_ffreestanding);
1267  Opts.NoBuiltin = Args.hasArg(OPT_fno_builtin) || Opts.Freestanding;
1268  Opts.AssumeSaneOperatorNew = !Args.hasArg(OPT_fno_assume_sane_operator_new);
1269  Opts.HeinousExtensions = Args.hasArg(OPT_fheinous_gnu_extensions);
1270  Opts.AccessControl = !Args.hasArg(OPT_fno_access_control);
1271  Opts.ElideConstructors = !Args.hasArg(OPT_fno_elide_constructors);
1272  Opts.MathErrno = Args.hasArg(OPT_fmath_errno);
1273  Opts.InstantiationDepth = getLastArgIntValue(Args, OPT_ftemplate_depth, 1024,
1274                                               Diags);
1275  Opts.NeXTRuntime = !Args.hasArg(OPT_fgnu_runtime);
1276  Opts.ObjCConstantStringClass = getLastArgValue(Args,
1277                                                 OPT_fconstant_string_class);
1278  Opts.ObjCNonFragileABI = Args.hasArg(OPT_fobjc_nonfragile_abi);
1279  Opts.ObjCNonFragileABI2 = Args.hasArg(OPT_fobjc_nonfragile_abi2);
1280  if (Opts.ObjCNonFragileABI2)
1281    Opts.ObjCNonFragileABI = true;
1282  Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
1283  Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
1284  Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
1285  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
1286  Opts.Static = Args.hasArg(OPT_static_define);
1287  Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
1288  Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);
1289  Opts.NoBitFieldTypeAlign = Args.hasArg(OPT_fno_bitfield_type_align);
1290  Opts.OptimizeSize = 0;
1291
1292  // FIXME: Eliminate this dependency.
1293  unsigned Opt =
1294    Args.hasArg(OPT_Os) ? 2 : getLastArgIntValue(Args, OPT_O, 0, Diags);
1295  Opts.Optimize = Opt != 0;
1296
1297  // This is the __NO_INLINE__ define, which just depends on things like the
1298  // optimization level and -fno-inline, not actually whether the backend has
1299  // inlining enabled.
1300  //
1301  // FIXME: This is affected by other options (-fno-inline).
1302  Opts.NoInline = !Opt;
1303
1304  unsigned SSP = getLastArgIntValue(Args, OPT_stack_protector, 0, Diags);
1305  switch (SSP) {
1306  default:
1307    Diags.Report(diag::err_drv_invalid_value)
1308      << Args.getLastArg(OPT_stack_protector)->getAsString(Args) << SSP;
1309    break;
1310  case 0: Opts.setStackProtectorMode(LangOptions::SSPOff); break;
1311  case 1: Opts.setStackProtectorMode(LangOptions::SSPOn);  break;
1312  case 2: Opts.setStackProtectorMode(LangOptions::SSPReq); break;
1313  }
1314}
1315
1316static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
1317                                  Diagnostic &Diags) {
1318  using namespace cc1options;
1319  Opts.ImplicitPCHInclude = getLastArgValue(Args, OPT_include_pch);
1320  Opts.ImplicitPTHInclude = getLastArgValue(Args, OPT_include_pth);
1321  if (const Arg *A = Args.getLastArg(OPT_token_cache))
1322      Opts.TokenCache = A->getValue(Args);
1323  else
1324    Opts.TokenCache = Opts.ImplicitPTHInclude;
1325  Opts.UsePredefines = !Args.hasArg(OPT_undef);
1326  Opts.DetailedRecord = Args.hasArg(OPT_detailed_preprocessing_record);
1327  // Add macros from the command line.
1328  for (arg_iterator it = Args.filtered_begin(OPT_D, OPT_U),
1329         ie = Args.filtered_end(); it != ie; ++it) {
1330    if (it->getOption().matches(OPT_D))
1331      Opts.addMacroDef(it->getValue(Args));
1332    else
1333      Opts.addMacroUndef(it->getValue(Args));
1334  }
1335
1336  Opts.MacroIncludes = getAllArgValues(Args, OPT_imacros);
1337
1338  // Add the ordered list of -includes.
1339  for (arg_iterator it = Args.filtered_begin(OPT_include, OPT_include_pch,
1340                                             OPT_include_pth),
1341         ie = Args.filtered_end(); it != ie; ++it) {
1342    // PCH is handled specially, we need to extra the original include path.
1343    if (it->getOption().matches(OPT_include_pch)) {
1344      std::string OriginalFile =
1345        PCHReader::getOriginalSourceFile(it->getValue(Args), Diags);
1346      if (OriginalFile.empty())
1347        continue;
1348
1349      Opts.Includes.push_back(OriginalFile);
1350    } else
1351      Opts.Includes.push_back(it->getValue(Args));
1352  }
1353
1354  // Include 'altivec.h' if -faltivec option present
1355  if (Args.hasArg(OPT_faltivec))
1356    Opts.Includes.push_back("altivec.h");
1357
1358  for (arg_iterator it = Args.filtered_begin(OPT_remap_file),
1359         ie = Args.filtered_end(); it != ie; ++it) {
1360    std::pair<llvm::StringRef,llvm::StringRef> Split =
1361      llvm::StringRef(it->getValue(Args)).split(';');
1362
1363    if (Split.second.empty()) {
1364      Diags.Report(diag::err_drv_invalid_remap_file) << it->getAsString(Args);
1365      continue;
1366    }
1367
1368    Opts.addRemappedFile(Split.first, Split.second);
1369  }
1370}
1371
1372static void ParsePreprocessorOutputArgs(PreprocessorOutputOptions &Opts,
1373                                        ArgList &Args) {
1374  using namespace cc1options;
1375  Opts.ShowCPP = !Args.hasArg(OPT_dM);
1376  Opts.ShowMacros = Args.hasArg(OPT_dM) || Args.hasArg(OPT_dD);
1377  Opts.ShowLineMarkers = !Args.hasArg(OPT_P);
1378  Opts.ShowComments = Args.hasArg(OPT_C);
1379  Opts.ShowMacroComments = Args.hasArg(OPT_CC);
1380}
1381
1382static void ParseTargetArgs(TargetOptions &Opts, ArgList &Args) {
1383  using namespace cc1options;
1384  Opts.ABI = getLastArgValue(Args, OPT_target_abi);
1385  Opts.CPU = getLastArgValue(Args, OPT_target_cpu);
1386  Opts.Triple = getLastArgValue(Args, OPT_triple);
1387  Opts.Features = getAllArgValues(Args, OPT_target_feature);
1388
1389  // Use the host triple if unspecified.
1390  if (Opts.Triple.empty())
1391    Opts.Triple = llvm::sys::getHostTriple();
1392}
1393
1394//
1395
1396void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
1397                                        const char **ArgBegin,
1398                                        const char **ArgEnd,
1399                                        Diagnostic &Diags) {
1400  // Parse the arguments.
1401  llvm::OwningPtr<OptTable> Opts(createCC1OptTable());
1402  unsigned MissingArgIndex, MissingArgCount;
1403  llvm::OwningPtr<InputArgList> Args(
1404    Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount));
1405
1406  // Check for missing argument error.
1407  if (MissingArgCount)
1408    Diags.Report(diag::err_drv_missing_argument)
1409      << Args->getArgString(MissingArgIndex) << MissingArgCount;
1410
1411  // Issue errors on unknown arguments.
1412  for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN),
1413         ie = Args->filtered_end(); it != ie; ++it)
1414    Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args);
1415
1416  ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags);
1417  ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags);
1418  ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
1419  ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags);
1420  FrontendOptions::InputKind DashX =
1421    ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags);
1422  ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args);
1423  if (DashX != FrontendOptions::IK_AST)
1424    ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags);
1425  ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags);
1426  ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);
1427  ParseTargetArgs(Res.getTargetOpts(), *Args);
1428}
1429