File: | tools/clang/lib/Frontend/CompilerInstance.cpp |
Warning: | line 300, column 1 Potential leak of memory pointed to by field 'Obj' |
Press '?' to see keyboard shortcuts
Keyboard shortcuts:
1 | //===--- CompilerInstance.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/CompilerInstance.h" | |||
11 | #include "clang/AST/ASTConsumer.h" | |||
12 | #include "clang/AST/ASTContext.h" | |||
13 | #include "clang/AST/Decl.h" | |||
14 | #include "clang/Basic/CharInfo.h" | |||
15 | #include "clang/Basic/Diagnostic.h" | |||
16 | #include "clang/Basic/FileManager.h" | |||
17 | #include "clang/Basic/MemoryBufferCache.h" | |||
18 | #include "clang/Basic/SourceManager.h" | |||
19 | #include "clang/Basic/Stack.h" | |||
20 | #include "clang/Basic/TargetInfo.h" | |||
21 | #include "clang/Basic/Version.h" | |||
22 | #include "clang/Config/config.h" | |||
23 | #include "clang/Frontend/ChainedDiagnosticConsumer.h" | |||
24 | #include "clang/Frontend/FrontendAction.h" | |||
25 | #include "clang/Frontend/FrontendActions.h" | |||
26 | #include "clang/Frontend/FrontendDiagnostic.h" | |||
27 | #include "clang/Frontend/LogDiagnosticPrinter.h" | |||
28 | #include "clang/Frontend/SerializedDiagnosticPrinter.h" | |||
29 | #include "clang/Frontend/TextDiagnosticPrinter.h" | |||
30 | #include "clang/Frontend/Utils.h" | |||
31 | #include "clang/Frontend/VerifyDiagnosticConsumer.h" | |||
32 | #include "clang/Lex/HeaderSearch.h" | |||
33 | #include "clang/Lex/PTHManager.h" | |||
34 | #include "clang/Lex/Preprocessor.h" | |||
35 | #include "clang/Lex/PreprocessorOptions.h" | |||
36 | #include "clang/Sema/CodeCompleteConsumer.h" | |||
37 | #include "clang/Sema/Sema.h" | |||
38 | #include "clang/Serialization/ASTReader.h" | |||
39 | #include "clang/Serialization/GlobalModuleIndex.h" | |||
40 | #include "llvm/ADT/Statistic.h" | |||
41 | #include "llvm/Support/CrashRecoveryContext.h" | |||
42 | #include "llvm/Support/Errc.h" | |||
43 | #include "llvm/Support/FileSystem.h" | |||
44 | #include "llvm/Support/Host.h" | |||
45 | #include "llvm/Support/LockFileManager.h" | |||
46 | #include "llvm/Support/MemoryBuffer.h" | |||
47 | #include "llvm/Support/Path.h" | |||
48 | #include "llvm/Support/Program.h" | |||
49 | #include "llvm/Support/Signals.h" | |||
50 | #include "llvm/Support/Timer.h" | |||
51 | #include "llvm/Support/raw_ostream.h" | |||
52 | #include <sys/stat.h> | |||
53 | #include <system_error> | |||
54 | #include <time.h> | |||
55 | #include <utility> | |||
56 | ||||
57 | using namespace clang; | |||
58 | ||||
59 | CompilerInstance::CompilerInstance( | |||
60 | std::shared_ptr<PCHContainerOperations> PCHContainerOps, | |||
61 | MemoryBufferCache *SharedPCMCache) | |||
62 | : ModuleLoader(/* BuildingModule = */ SharedPCMCache), | |||
63 | Invocation(new CompilerInvocation()), | |||
64 | PCMCache(SharedPCMCache ? SharedPCMCache : new MemoryBufferCache), | |||
65 | ThePCHContainerOperations(std::move(PCHContainerOps)) { | |||
66 | // Don't allow this to invalidate buffers in use by others. | |||
67 | if (SharedPCMCache) | |||
68 | getPCMCache().finalizeCurrentBuffers(); | |||
69 | } | |||
70 | ||||
71 | CompilerInstance::~CompilerInstance() { | |||
72 | assert(OutputFiles.empty() && "Still output files in flight?")(static_cast <bool> (OutputFiles.empty() && "Still output files in flight?" ) ? void (0) : __assert_fail ("OutputFiles.empty() && \"Still output files in flight?\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 72, __extension__ __PRETTY_FUNCTION__)); | |||
73 | } | |||
74 | ||||
75 | void CompilerInstance::setInvocation( | |||
76 | std::shared_ptr<CompilerInvocation> Value) { | |||
77 | Invocation = std::move(Value); | |||
78 | } | |||
79 | ||||
80 | bool CompilerInstance::shouldBuildGlobalModuleIndex() const { | |||
81 | return (BuildGlobalModuleIndex || | |||
82 | (ModuleManager && ModuleManager->isGlobalIndexUnavailable() && | |||
83 | getFrontendOpts().GenerateGlobalModuleIndex)) && | |||
84 | !ModuleBuildFailed; | |||
85 | } | |||
86 | ||||
87 | void CompilerInstance::setDiagnostics(DiagnosticsEngine *Value) { | |||
88 | Diagnostics = Value; | |||
89 | } | |||
90 | ||||
91 | void CompilerInstance::setTarget(TargetInfo *Value) { Target = Value; } | |||
92 | void CompilerInstance::setAuxTarget(TargetInfo *Value) { AuxTarget = Value; } | |||
93 | ||||
94 | void CompilerInstance::setFileManager(FileManager *Value) { | |||
95 | FileMgr = Value; | |||
96 | if (Value) | |||
97 | VirtualFileSystem = Value->getVirtualFileSystem(); | |||
98 | else | |||
99 | VirtualFileSystem.reset(); | |||
100 | } | |||
101 | ||||
102 | void CompilerInstance::setSourceManager(SourceManager *Value) { | |||
103 | SourceMgr = Value; | |||
104 | } | |||
105 | ||||
106 | void CompilerInstance::setPreprocessor(std::shared_ptr<Preprocessor> Value) { | |||
107 | PP = std::move(Value); | |||
108 | } | |||
109 | ||||
110 | void CompilerInstance::setASTContext(ASTContext *Value) { | |||
111 | Context = Value; | |||
112 | ||||
113 | if (Context && Consumer) | |||
114 | getASTConsumer().Initialize(getASTContext()); | |||
115 | } | |||
116 | ||||
117 | void CompilerInstance::setSema(Sema *S) { | |||
118 | TheSema.reset(S); | |||
119 | } | |||
120 | ||||
121 | void CompilerInstance::setASTConsumer(std::unique_ptr<ASTConsumer> Value) { | |||
122 | Consumer = std::move(Value); | |||
123 | ||||
124 | if (Context && Consumer) | |||
125 | getASTConsumer().Initialize(getASTContext()); | |||
126 | } | |||
127 | ||||
128 | void CompilerInstance::setCodeCompletionConsumer(CodeCompleteConsumer *Value) { | |||
129 | CompletionConsumer.reset(Value); | |||
130 | } | |||
131 | ||||
132 | std::unique_ptr<Sema> CompilerInstance::takeSema() { | |||
133 | return std::move(TheSema); | |||
134 | } | |||
135 | ||||
136 | IntrusiveRefCntPtr<ASTReader> CompilerInstance::getModuleManager() const { | |||
137 | return ModuleManager; | |||
138 | } | |||
139 | void CompilerInstance::setModuleManager(IntrusiveRefCntPtr<ASTReader> Reader) { | |||
140 | assert(PCMCache.get() == &Reader->getModuleManager().getPCMCache() &&(static_cast <bool> (PCMCache.get() == &Reader-> getModuleManager().getPCMCache() && "Expected ASTReader to use the same PCM cache" ) ? void (0) : __assert_fail ("PCMCache.get() == &Reader->getModuleManager().getPCMCache() && \"Expected ASTReader to use the same PCM cache\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 141, __extension__ __PRETTY_FUNCTION__)) | |||
141 | "Expected ASTReader to use the same PCM cache")(static_cast <bool> (PCMCache.get() == &Reader-> getModuleManager().getPCMCache() && "Expected ASTReader to use the same PCM cache" ) ? void (0) : __assert_fail ("PCMCache.get() == &Reader->getModuleManager().getPCMCache() && \"Expected ASTReader to use the same PCM cache\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 141, __extension__ __PRETTY_FUNCTION__)); | |||
142 | ModuleManager = std::move(Reader); | |||
143 | } | |||
144 | ||||
145 | std::shared_ptr<ModuleDependencyCollector> | |||
146 | CompilerInstance::getModuleDepCollector() const { | |||
147 | return ModuleDepCollector; | |||
148 | } | |||
149 | ||||
150 | void CompilerInstance::setModuleDepCollector( | |||
151 | std::shared_ptr<ModuleDependencyCollector> Collector) { | |||
152 | ModuleDepCollector = std::move(Collector); | |||
153 | } | |||
154 | ||||
155 | static void collectHeaderMaps(const HeaderSearch &HS, | |||
156 | std::shared_ptr<ModuleDependencyCollector> MDC) { | |||
157 | SmallVector<std::string, 4> HeaderMapFileNames; | |||
158 | HS.getHeaderMapFileNames(HeaderMapFileNames); | |||
159 | for (auto &Name : HeaderMapFileNames) | |||
160 | MDC->addFile(Name); | |||
161 | } | |||
162 | ||||
163 | static void collectIncludePCH(CompilerInstance &CI, | |||
164 | std::shared_ptr<ModuleDependencyCollector> MDC) { | |||
165 | const PreprocessorOptions &PPOpts = CI.getPreprocessorOpts(); | |||
166 | if (PPOpts.ImplicitPCHInclude.empty()) | |||
167 | return; | |||
168 | ||||
169 | StringRef PCHInclude = PPOpts.ImplicitPCHInclude; | |||
170 | FileManager &FileMgr = CI.getFileManager(); | |||
171 | const DirectoryEntry *PCHDir = FileMgr.getDirectory(PCHInclude); | |||
172 | if (!PCHDir) { | |||
173 | MDC->addFile(PCHInclude); | |||
174 | return; | |||
175 | } | |||
176 | ||||
177 | std::error_code EC; | |||
178 | SmallString<128> DirNative; | |||
179 | llvm::sys::path::native(PCHDir->getName(), DirNative); | |||
180 | vfs::FileSystem &FS = *FileMgr.getVirtualFileSystem(); | |||
181 | SimpleASTReaderListener Validator(CI.getPreprocessor()); | |||
182 | for (vfs::directory_iterator Dir = FS.dir_begin(DirNative, EC), DirEnd; | |||
183 | Dir != DirEnd && !EC; Dir.increment(EC)) { | |||
184 | // Check whether this is an AST file. ASTReader::isAcceptableASTFile is not | |||
185 | // used here since we're not interested in validating the PCH at this time, | |||
186 | // but only to check whether this is a file containing an AST. | |||
187 | if (!ASTReader::readASTFileControlBlock( | |||
188 | Dir->getName(), FileMgr, CI.getPCHContainerReader(), | |||
189 | /*FindModuleFileExtensions=*/false, Validator, | |||
190 | /*ValidateDiagnosticOptions=*/false)) | |||
191 | MDC->addFile(Dir->getName()); | |||
192 | } | |||
193 | } | |||
194 | ||||
195 | static void collectVFSEntries(CompilerInstance &CI, | |||
196 | std::shared_ptr<ModuleDependencyCollector> MDC) { | |||
197 | if (CI.getHeaderSearchOpts().VFSOverlayFiles.empty()) | |||
198 | return; | |||
199 | ||||
200 | // Collect all VFS found. | |||
201 | SmallVector<vfs::YAMLVFSEntry, 16> VFSEntries; | |||
202 | for (const std::string &VFSFile : CI.getHeaderSearchOpts().VFSOverlayFiles) { | |||
203 | llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> Buffer = | |||
204 | llvm::MemoryBuffer::getFile(VFSFile); | |||
205 | if (!Buffer) | |||
206 | return; | |||
207 | vfs::collectVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr, | |||
208 | VFSFile, VFSEntries); | |||
209 | } | |||
210 | ||||
211 | for (auto &E : VFSEntries) | |||
212 | MDC->addFile(E.VPath, E.RPath); | |||
213 | } | |||
214 | ||||
215 | // Diagnostics | |||
216 | static void SetUpDiagnosticLog(DiagnosticOptions *DiagOpts, | |||
217 | const CodeGenOptions *CodeGenOpts, | |||
218 | DiagnosticsEngine &Diags) { | |||
219 | std::error_code EC; | |||
220 | std::unique_ptr<raw_ostream> StreamOwner; | |||
221 | raw_ostream *OS = &llvm::errs(); | |||
222 | if (DiagOpts->DiagnosticLogFile != "-") { | |||
223 | // Create the output stream. | |||
224 | auto FileOS = llvm::make_unique<llvm::raw_fd_ostream>( | |||
225 | DiagOpts->DiagnosticLogFile, EC, | |||
226 | llvm::sys::fs::F_Append | llvm::sys::fs::F_Text); | |||
227 | if (EC) { | |||
228 | Diags.Report(diag::warn_fe_cc_log_diagnostics_failure) | |||
229 | << DiagOpts->DiagnosticLogFile << EC.message(); | |||
230 | } else { | |||
231 | FileOS->SetUnbuffered(); | |||
232 | OS = FileOS.get(); | |||
233 | StreamOwner = std::move(FileOS); | |||
234 | } | |||
235 | } | |||
236 | ||||
237 | // Chain in the diagnostic client which will log the diagnostics. | |||
238 | auto Logger = llvm::make_unique<LogDiagnosticPrinter>(*OS, DiagOpts, | |||
239 | std::move(StreamOwner)); | |||
240 | if (CodeGenOpts) | |||
241 | Logger->setDwarfDebugFlags(CodeGenOpts->DwarfDebugFlags); | |||
242 | assert(Diags.ownsClient())(static_cast <bool> (Diags.ownsClient()) ? void (0) : __assert_fail ("Diags.ownsClient()", "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 242, __extension__ __PRETTY_FUNCTION__)); | |||
243 | Diags.setClient( | |||
244 | new ChainedDiagnosticConsumer(Diags.takeClient(), std::move(Logger))); | |||
245 | } | |||
246 | ||||
247 | static void SetupSerializedDiagnostics(DiagnosticOptions *DiagOpts, | |||
248 | DiagnosticsEngine &Diags, | |||
249 | StringRef OutputFile) { | |||
250 | auto SerializedConsumer = | |||
251 | clang::serialized_diags::create(OutputFile, DiagOpts); | |||
252 | ||||
253 | if (Diags.ownsClient()) { | |||
254 | Diags.setClient(new ChainedDiagnosticConsumer( | |||
255 | Diags.takeClient(), std::move(SerializedConsumer))); | |||
256 | } else { | |||
257 | Diags.setClient(new ChainedDiagnosticConsumer( | |||
258 | Diags.getClient(), std::move(SerializedConsumer))); | |||
259 | } | |||
260 | } | |||
261 | ||||
262 | void CompilerInstance::createDiagnostics(DiagnosticConsumer *Client, | |||
263 | bool ShouldOwnClient) { | |||
264 | Diagnostics = createDiagnostics(&getDiagnosticOpts(), Client, | |||
| ||||
265 | ShouldOwnClient, &getCodeGenOpts()); | |||
266 | } | |||
267 | ||||
268 | IntrusiveRefCntPtr<DiagnosticsEngine> | |||
269 | CompilerInstance::createDiagnostics(DiagnosticOptions *Opts, | |||
270 | DiagnosticConsumer *Client, | |||
271 | bool ShouldOwnClient, | |||
272 | const CodeGenOptions *CodeGenOpts) { | |||
273 | IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs()); | |||
274 | IntrusiveRefCntPtr<DiagnosticsEngine> | |||
275 | Diags(new DiagnosticsEngine(DiagID, Opts)); | |||
276 | ||||
277 | // Create the diagnostic client for reporting errors or for | |||
278 | // implementing -verify. | |||
279 | if (Client) { | |||
280 | Diags->setClient(Client, ShouldOwnClient); | |||
281 | } else | |||
282 | Diags->setClient(new TextDiagnosticPrinter(llvm::errs(), Opts)); | |||
283 | ||||
284 | // Chain in -verify checker, if requested. | |||
285 | if (Opts->VerifyDiagnostics) | |||
286 | Diags->setClient(new VerifyDiagnosticConsumer(*Diags)); | |||
287 | ||||
288 | // Chain in -diagnostic-log-file dumper, if requested. | |||
289 | if (!Opts->DiagnosticLogFile.empty()) | |||
290 | SetUpDiagnosticLog(Opts, CodeGenOpts, *Diags); | |||
291 | ||||
292 | if (!Opts->DiagnosticSerializationFile.empty()) | |||
293 | SetupSerializedDiagnostics(Opts, *Diags, | |||
294 | Opts->DiagnosticSerializationFile); | |||
295 | ||||
296 | // Configure our handling of diagnostics. | |||
297 | ProcessWarningOptions(*Diags, *Opts); | |||
298 | ||||
299 | return Diags; | |||
300 | } | |||
| ||||
301 | ||||
302 | // File Manager | |||
303 | ||||
304 | FileManager *CompilerInstance::createFileManager() { | |||
305 | if (!hasVirtualFileSystem()) { | |||
306 | IntrusiveRefCntPtr<vfs::FileSystem> VFS = | |||
307 | createVFSFromCompilerInvocation(getInvocation(), getDiagnostics()); | |||
308 | setVirtualFileSystem(VFS); | |||
309 | } | |||
310 | FileMgr = new FileManager(getFileSystemOpts(), VirtualFileSystem); | |||
311 | return FileMgr.get(); | |||
312 | } | |||
313 | ||||
314 | // Source Manager | |||
315 | ||||
316 | void CompilerInstance::createSourceManager(FileManager &FileMgr) { | |||
317 | SourceMgr = new SourceManager(getDiagnostics(), FileMgr); | |||
318 | } | |||
319 | ||||
320 | // Initialize the remapping of files to alternative contents, e.g., | |||
321 | // those specified through other files. | |||
322 | static void InitializeFileRemapping(DiagnosticsEngine &Diags, | |||
323 | SourceManager &SourceMgr, | |||
324 | FileManager &FileMgr, | |||
325 | const PreprocessorOptions &InitOpts) { | |||
326 | // Remap files in the source manager (with buffers). | |||
327 | for (const auto &RB : InitOpts.RemappedFileBuffers) { | |||
328 | // Create the file entry for the file that we're mapping from. | |||
329 | const FileEntry *FromFile = | |||
330 | FileMgr.getVirtualFile(RB.first, RB.second->getBufferSize(), 0); | |||
331 | if (!FromFile) { | |||
332 | Diags.Report(diag::err_fe_remap_missing_from_file) << RB.first; | |||
333 | if (!InitOpts.RetainRemappedFileBuffers) | |||
334 | delete RB.second; | |||
335 | continue; | |||
336 | } | |||
337 | ||||
338 | // Override the contents of the "from" file with the contents of | |||
339 | // the "to" file. | |||
340 | SourceMgr.overrideFileContents(FromFile, RB.second, | |||
341 | InitOpts.RetainRemappedFileBuffers); | |||
342 | } | |||
343 | ||||
344 | // Remap files in the source manager (with other files). | |||
345 | for (const auto &RF : InitOpts.RemappedFiles) { | |||
346 | // Find the file that we're mapping to. | |||
347 | const FileEntry *ToFile = FileMgr.getFile(RF.second); | |||
348 | if (!ToFile) { | |||
349 | Diags.Report(diag::err_fe_remap_missing_to_file) << RF.first << RF.second; | |||
350 | continue; | |||
351 | } | |||
352 | ||||
353 | // Create the file entry for the file that we're mapping from. | |||
354 | const FileEntry *FromFile = | |||
355 | FileMgr.getVirtualFile(RF.first, ToFile->getSize(), 0); | |||
356 | if (!FromFile) { | |||
357 | Diags.Report(diag::err_fe_remap_missing_from_file) << RF.first; | |||
358 | continue; | |||
359 | } | |||
360 | ||||
361 | // Override the contents of the "from" file with the contents of | |||
362 | // the "to" file. | |||
363 | SourceMgr.overrideFileContents(FromFile, ToFile); | |||
364 | } | |||
365 | ||||
366 | SourceMgr.setOverridenFilesKeepOriginalName( | |||
367 | InitOpts.RemappedFilesKeepOriginalName); | |||
368 | } | |||
369 | ||||
370 | // Preprocessor | |||
371 | ||||
372 | void CompilerInstance::createPreprocessor(TranslationUnitKind TUKind) { | |||
373 | const PreprocessorOptions &PPOpts = getPreprocessorOpts(); | |||
374 | ||||
375 | // Create a PTH manager if we are using some form of a token cache. | |||
376 | PTHManager *PTHMgr = nullptr; | |||
377 | if (!PPOpts.TokenCache.empty()) | |||
378 | PTHMgr = PTHManager::Create(PPOpts.TokenCache, getDiagnostics()); | |||
379 | ||||
380 | // Create the Preprocessor. | |||
381 | HeaderSearch *HeaderInfo = | |||
382 | new HeaderSearch(getHeaderSearchOptsPtr(), getSourceManager(), | |||
383 | getDiagnostics(), getLangOpts(), &getTarget()); | |||
384 | PP = std::make_shared<Preprocessor>( | |||
385 | Invocation->getPreprocessorOptsPtr(), getDiagnostics(), getLangOpts(), | |||
386 | getSourceManager(), getPCMCache(), *HeaderInfo, *this, PTHMgr, | |||
387 | /*OwnsHeaderSearch=*/true, TUKind); | |||
388 | getTarget().adjust(getLangOpts()); | |||
389 | PP->Initialize(getTarget(), getAuxTarget()); | |||
390 | ||||
391 | // Note that this is different then passing PTHMgr to Preprocessor's ctor. | |||
392 | // That argument is used as the IdentifierInfoLookup argument to | |||
393 | // IdentifierTable's ctor. | |||
394 | if (PTHMgr) { | |||
395 | PTHMgr->setPreprocessor(&*PP); | |||
396 | PP->setPTHManager(PTHMgr); | |||
397 | } | |||
398 | ||||
399 | if (PPOpts.DetailedRecord) | |||
400 | PP->createPreprocessingRecord(); | |||
401 | ||||
402 | // Apply remappings to the source manager. | |||
403 | InitializeFileRemapping(PP->getDiagnostics(), PP->getSourceManager(), | |||
404 | PP->getFileManager(), PPOpts); | |||
405 | ||||
406 | // Predefine macros and configure the preprocessor. | |||
407 | InitializePreprocessor(*PP, PPOpts, getPCHContainerReader(), | |||
408 | getFrontendOpts()); | |||
409 | ||||
410 | // Initialize the header search object. In CUDA compilations, we use the aux | |||
411 | // triple (the host triple) to initialize our header search, since we need to | |||
412 | // find the host headers in order to compile the CUDA code. | |||
413 | const llvm::Triple *HeaderSearchTriple = &PP->getTargetInfo().getTriple(); | |||
414 | if (PP->getTargetInfo().getTriple().getOS() == llvm::Triple::CUDA && | |||
415 | PP->getAuxTargetInfo()) | |||
416 | HeaderSearchTriple = &PP->getAuxTargetInfo()->getTriple(); | |||
417 | ||||
418 | ApplyHeaderSearchOptions(PP->getHeaderSearchInfo(), getHeaderSearchOpts(), | |||
419 | PP->getLangOpts(), *HeaderSearchTriple); | |||
420 | ||||
421 | PP->setPreprocessedOutput(getPreprocessorOutputOpts().ShowCPP); | |||
422 | ||||
423 | if (PP->getLangOpts().Modules && PP->getLangOpts().ImplicitModules) | |||
424 | PP->getHeaderSearchInfo().setModuleCachePath(getSpecificModuleCachePath()); | |||
425 | ||||
426 | // Handle generating dependencies, if requested. | |||
427 | const DependencyOutputOptions &DepOpts = getDependencyOutputOpts(); | |||
428 | if (!DepOpts.OutputFile.empty()) | |||
429 | TheDependencyFileGenerator.reset( | |||
430 | DependencyFileGenerator::CreateAndAttachToPreprocessor(*PP, DepOpts)); | |||
431 | if (!DepOpts.DOTOutputFile.empty()) | |||
432 | AttachDependencyGraphGen(*PP, DepOpts.DOTOutputFile, | |||
433 | getHeaderSearchOpts().Sysroot); | |||
434 | ||||
435 | // If we don't have a collector, but we are collecting module dependencies, | |||
436 | // then we're the top level compiler instance and need to create one. | |||
437 | if (!ModuleDepCollector && !DepOpts.ModuleDependencyOutputDir.empty()) { | |||
438 | ModuleDepCollector = std::make_shared<ModuleDependencyCollector>( | |||
439 | DepOpts.ModuleDependencyOutputDir); | |||
440 | } | |||
441 | ||||
442 | // If there is a module dep collector, register with other dep collectors | |||
443 | // and also (a) collect header maps and (b) TODO: input vfs overlay files. | |||
444 | if (ModuleDepCollector) { | |||
445 | addDependencyCollector(ModuleDepCollector); | |||
446 | collectHeaderMaps(PP->getHeaderSearchInfo(), ModuleDepCollector); | |||
447 | collectIncludePCH(*this, ModuleDepCollector); | |||
448 | collectVFSEntries(*this, ModuleDepCollector); | |||
449 | } | |||
450 | ||||
451 | for (auto &Listener : DependencyCollectors) | |||
452 | Listener->attachToPreprocessor(*PP); | |||
453 | ||||
454 | // Handle generating header include information, if requested. | |||
455 | if (DepOpts.ShowHeaderIncludes) | |||
456 | AttachHeaderIncludeGen(*PP, DepOpts); | |||
457 | if (!DepOpts.HeaderIncludeOutputFile.empty()) { | |||
458 | StringRef OutputPath = DepOpts.HeaderIncludeOutputFile; | |||
459 | if (OutputPath == "-") | |||
460 | OutputPath = ""; | |||
461 | AttachHeaderIncludeGen(*PP, DepOpts, | |||
462 | /*ShowAllHeaders=*/true, OutputPath, | |||
463 | /*ShowDepth=*/false); | |||
464 | } | |||
465 | ||||
466 | if (DepOpts.ShowIncludesDest != ShowIncludesDestination::None) { | |||
467 | AttachHeaderIncludeGen(*PP, DepOpts, | |||
468 | /*ShowAllHeaders=*/true, /*OutputPath=*/"", | |||
469 | /*ShowDepth=*/true, /*MSStyle=*/true); | |||
470 | } | |||
471 | } | |||
472 | ||||
473 | std::string CompilerInstance::getSpecificModuleCachePath() { | |||
474 | // Set up the module path, including the hash for the | |||
475 | // module-creation options. | |||
476 | SmallString<256> SpecificModuleCache(getHeaderSearchOpts().ModuleCachePath); | |||
477 | if (!SpecificModuleCache.empty() && !getHeaderSearchOpts().DisableModuleHash) | |||
478 | llvm::sys::path::append(SpecificModuleCache, | |||
479 | getInvocation().getModuleHash()); | |||
480 | return SpecificModuleCache.str(); | |||
481 | } | |||
482 | ||||
483 | // ASTContext | |||
484 | ||||
485 | void CompilerInstance::createASTContext() { | |||
486 | Preprocessor &PP = getPreprocessor(); | |||
487 | auto *Context = new ASTContext(getLangOpts(), PP.getSourceManager(), | |||
488 | PP.getIdentifierTable(), PP.getSelectorTable(), | |||
489 | PP.getBuiltinInfo()); | |||
490 | Context->InitBuiltinTypes(getTarget(), getAuxTarget()); | |||
491 | setASTContext(Context); | |||
492 | } | |||
493 | ||||
494 | // ExternalASTSource | |||
495 | ||||
496 | void CompilerInstance::createPCHExternalASTSource( | |||
497 | StringRef Path, bool DisablePCHValidation, bool AllowPCHWithCompilerErrors, | |||
498 | void *DeserializationListener, bool OwnDeserializationListener) { | |||
499 | bool Preamble = getPreprocessorOpts().PrecompiledPreambleBytes.first != 0; | |||
500 | ModuleManager = createPCHExternalASTSource( | |||
501 | Path, getHeaderSearchOpts().Sysroot, DisablePCHValidation, | |||
502 | AllowPCHWithCompilerErrors, getPreprocessor(), getASTContext(), | |||
503 | getPCHContainerReader(), | |||
504 | getFrontendOpts().ModuleFileExtensions, | |||
505 | TheDependencyFileGenerator.get(), | |||
506 | DependencyCollectors, | |||
507 | DeserializationListener, | |||
508 | OwnDeserializationListener, Preamble, | |||
509 | getFrontendOpts().UseGlobalModuleIndex); | |||
510 | } | |||
511 | ||||
512 | IntrusiveRefCntPtr<ASTReader> CompilerInstance::createPCHExternalASTSource( | |||
513 | StringRef Path, StringRef Sysroot, bool DisablePCHValidation, | |||
514 | bool AllowPCHWithCompilerErrors, Preprocessor &PP, ASTContext &Context, | |||
515 | const PCHContainerReader &PCHContainerRdr, | |||
516 | ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions, | |||
517 | DependencyFileGenerator *DependencyFile, | |||
518 | ArrayRef<std::shared_ptr<DependencyCollector>> DependencyCollectors, | |||
519 | void *DeserializationListener, bool OwnDeserializationListener, | |||
520 | bool Preamble, bool UseGlobalModuleIndex) { | |||
521 | HeaderSearchOptions &HSOpts = PP.getHeaderSearchInfo().getHeaderSearchOpts(); | |||
522 | ||||
523 | IntrusiveRefCntPtr<ASTReader> Reader(new ASTReader( | |||
524 | PP, &Context, PCHContainerRdr, Extensions, | |||
525 | Sysroot.empty() ? "" : Sysroot.data(), DisablePCHValidation, | |||
526 | AllowPCHWithCompilerErrors, /*AllowConfigurationMismatch*/ false, | |||
527 | HSOpts.ModulesValidateSystemHeaders, UseGlobalModuleIndex)); | |||
528 | ||||
529 | // We need the external source to be set up before we read the AST, because | |||
530 | // eagerly-deserialized declarations may use it. | |||
531 | Context.setExternalSource(Reader.get()); | |||
532 | ||||
533 | Reader->setDeserializationListener( | |||
534 | static_cast<ASTDeserializationListener *>(DeserializationListener), | |||
535 | /*TakeOwnership=*/OwnDeserializationListener); | |||
536 | ||||
537 | if (DependencyFile) | |||
538 | DependencyFile->AttachToASTReader(*Reader); | |||
539 | for (auto &Listener : DependencyCollectors) | |||
540 | Listener->attachToASTReader(*Reader); | |||
541 | ||||
542 | switch (Reader->ReadAST(Path, | |||
543 | Preamble ? serialization::MK_Preamble | |||
544 | : serialization::MK_PCH, | |||
545 | SourceLocation(), | |||
546 | ASTReader::ARR_None)) { | |||
547 | case ASTReader::Success: | |||
548 | // Set the predefines buffer as suggested by the PCH reader. Typically, the | |||
549 | // predefines buffer will be empty. | |||
550 | PP.setPredefines(Reader->getSuggestedPredefines()); | |||
551 | return Reader; | |||
552 | ||||
553 | case ASTReader::Failure: | |||
554 | // Unrecoverable failure: don't even try to process the input file. | |||
555 | break; | |||
556 | ||||
557 | case ASTReader::Missing: | |||
558 | case ASTReader::OutOfDate: | |||
559 | case ASTReader::VersionMismatch: | |||
560 | case ASTReader::ConfigurationMismatch: | |||
561 | case ASTReader::HadErrors: | |||
562 | // No suitable PCH file could be found. Return an error. | |||
563 | break; | |||
564 | } | |||
565 | ||||
566 | Context.setExternalSource(nullptr); | |||
567 | return nullptr; | |||
568 | } | |||
569 | ||||
570 | // Code Completion | |||
571 | ||||
572 | static bool EnableCodeCompletion(Preprocessor &PP, | |||
573 | StringRef Filename, | |||
574 | unsigned Line, | |||
575 | unsigned Column) { | |||
576 | // Tell the source manager to chop off the given file at a specific | |||
577 | // line and column. | |||
578 | const FileEntry *Entry = PP.getFileManager().getFile(Filename); | |||
579 | if (!Entry) { | |||
580 | PP.getDiagnostics().Report(diag::err_fe_invalid_code_complete_file) | |||
581 | << Filename; | |||
582 | return true; | |||
583 | } | |||
584 | ||||
585 | // Truncate the named file at the given line/column. | |||
586 | PP.SetCodeCompletionPoint(Entry, Line, Column); | |||
587 | return false; | |||
588 | } | |||
589 | ||||
590 | void CompilerInstance::createCodeCompletionConsumer() { | |||
591 | const ParsedSourceLocation &Loc = getFrontendOpts().CodeCompletionAt; | |||
592 | if (!CompletionConsumer) { | |||
593 | setCodeCompletionConsumer( | |||
594 | createCodeCompletionConsumer(getPreprocessor(), | |||
595 | Loc.FileName, Loc.Line, Loc.Column, | |||
596 | getFrontendOpts().CodeCompleteOpts, | |||
597 | llvm::outs())); | |||
598 | if (!CompletionConsumer) | |||
599 | return; | |||
600 | } else if (EnableCodeCompletion(getPreprocessor(), Loc.FileName, | |||
601 | Loc.Line, Loc.Column)) { | |||
602 | setCodeCompletionConsumer(nullptr); | |||
603 | return; | |||
604 | } | |||
605 | ||||
606 | if (CompletionConsumer->isOutputBinary() && | |||
607 | llvm::sys::ChangeStdoutToBinary()) { | |||
608 | getPreprocessor().getDiagnostics().Report(diag::err_fe_stdout_binary); | |||
609 | setCodeCompletionConsumer(nullptr); | |||
610 | } | |||
611 | } | |||
612 | ||||
613 | void CompilerInstance::createFrontendTimer() { | |||
614 | FrontendTimerGroup.reset( | |||
615 | new llvm::TimerGroup("frontend", "Clang front-end time report")); | |||
616 | FrontendTimer.reset( | |||
617 | new llvm::Timer("frontend", "Clang front-end timer", | |||
618 | *FrontendTimerGroup)); | |||
619 | } | |||
620 | ||||
621 | CodeCompleteConsumer * | |||
622 | CompilerInstance::createCodeCompletionConsumer(Preprocessor &PP, | |||
623 | StringRef Filename, | |||
624 | unsigned Line, | |||
625 | unsigned Column, | |||
626 | const CodeCompleteOptions &Opts, | |||
627 | raw_ostream &OS) { | |||
628 | if (EnableCodeCompletion(PP, Filename, Line, Column)) | |||
629 | return nullptr; | |||
630 | ||||
631 | // Set up the creation routine for code-completion. | |||
632 | return new PrintingCodeCompleteConsumer(Opts, OS); | |||
633 | } | |||
634 | ||||
635 | void CompilerInstance::createSema(TranslationUnitKind TUKind, | |||
636 | CodeCompleteConsumer *CompletionConsumer) { | |||
637 | TheSema.reset(new Sema(getPreprocessor(), getASTContext(), getASTConsumer(), | |||
638 | TUKind, CompletionConsumer)); | |||
639 | // Attach the external sema source if there is any. | |||
640 | if (ExternalSemaSrc) { | |||
641 | TheSema->addExternalSource(ExternalSemaSrc.get()); | |||
642 | ExternalSemaSrc->InitializeSema(*TheSema); | |||
643 | } | |||
644 | } | |||
645 | ||||
646 | // Output Files | |||
647 | ||||
648 | void CompilerInstance::addOutputFile(OutputFile &&OutFile) { | |||
649 | OutputFiles.push_back(std::move(OutFile)); | |||
650 | } | |||
651 | ||||
652 | void CompilerInstance::clearOutputFiles(bool EraseFiles) { | |||
653 | for (OutputFile &OF : OutputFiles) { | |||
654 | if (!OF.TempFilename.empty()) { | |||
655 | if (EraseFiles) { | |||
656 | llvm::sys::fs::remove(OF.TempFilename); | |||
657 | } else { | |||
658 | SmallString<128> NewOutFile(OF.Filename); | |||
659 | ||||
660 | // If '-working-directory' was passed, the output filename should be | |||
661 | // relative to that. | |||
662 | FileMgr->FixupRelativePath(NewOutFile); | |||
663 | if (std::error_code ec = | |||
664 | llvm::sys::fs::rename(OF.TempFilename, NewOutFile)) { | |||
665 | getDiagnostics().Report(diag::err_unable_to_rename_temp) | |||
666 | << OF.TempFilename << OF.Filename << ec.message(); | |||
667 | ||||
668 | llvm::sys::fs::remove(OF.TempFilename); | |||
669 | } | |||
670 | } | |||
671 | } else if (!OF.Filename.empty() && EraseFiles) | |||
672 | llvm::sys::fs::remove(OF.Filename); | |||
673 | } | |||
674 | OutputFiles.clear(); | |||
675 | if (DeleteBuiltModules) { | |||
676 | for (auto &Module : BuiltModules) | |||
677 | llvm::sys::fs::remove(Module.second); | |||
678 | BuiltModules.clear(); | |||
679 | } | |||
680 | NonSeekStream.reset(); | |||
681 | } | |||
682 | ||||
683 | std::unique_ptr<raw_pwrite_stream> | |||
684 | CompilerInstance::createDefaultOutputFile(bool Binary, StringRef InFile, | |||
685 | StringRef Extension) { | |||
686 | return createOutputFile(getFrontendOpts().OutputFile, Binary, | |||
687 | /*RemoveFileOnSignal=*/true, InFile, Extension, | |||
688 | /*UseTemporary=*/true); | |||
689 | } | |||
690 | ||||
691 | std::unique_ptr<raw_pwrite_stream> CompilerInstance::createNullOutputFile() { | |||
692 | return llvm::make_unique<llvm::raw_null_ostream>(); | |||
693 | } | |||
694 | ||||
695 | std::unique_ptr<raw_pwrite_stream> | |||
696 | CompilerInstance::createOutputFile(StringRef OutputPath, bool Binary, | |||
697 | bool RemoveFileOnSignal, StringRef InFile, | |||
698 | StringRef Extension, bool UseTemporary, | |||
699 | bool CreateMissingDirectories) { | |||
700 | std::string OutputPathName, TempPathName; | |||
701 | std::error_code EC; | |||
702 | std::unique_ptr<raw_pwrite_stream> OS = createOutputFile( | |||
703 | OutputPath, EC, Binary, RemoveFileOnSignal, InFile, Extension, | |||
704 | UseTemporary, CreateMissingDirectories, &OutputPathName, &TempPathName); | |||
705 | if (!OS) { | |||
706 | getDiagnostics().Report(diag::err_fe_unable_to_open_output) << OutputPath | |||
707 | << EC.message(); | |||
708 | return nullptr; | |||
709 | } | |||
710 | ||||
711 | // Add the output file -- but don't try to remove "-", since this means we are | |||
712 | // using stdin. | |||
713 | addOutputFile( | |||
714 | OutputFile((OutputPathName != "-") ? OutputPathName : "", TempPathName)); | |||
715 | ||||
716 | return OS; | |||
717 | } | |||
718 | ||||
719 | std::unique_ptr<llvm::raw_pwrite_stream> CompilerInstance::createOutputFile( | |||
720 | StringRef OutputPath, std::error_code &Error, bool Binary, | |||
721 | bool RemoveFileOnSignal, StringRef InFile, StringRef Extension, | |||
722 | bool UseTemporary, bool CreateMissingDirectories, | |||
723 | std::string *ResultPathName, std::string *TempPathName) { | |||
724 | assert((!CreateMissingDirectories || UseTemporary) &&(static_cast <bool> ((!CreateMissingDirectories || UseTemporary ) && "CreateMissingDirectories is only allowed when using temporary files" ) ? void (0) : __assert_fail ("(!CreateMissingDirectories || UseTemporary) && \"CreateMissingDirectories is only allowed when using temporary files\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 725, __extension__ __PRETTY_FUNCTION__)) | |||
725 | "CreateMissingDirectories is only allowed when using temporary files")(static_cast <bool> ((!CreateMissingDirectories || UseTemporary ) && "CreateMissingDirectories is only allowed when using temporary files" ) ? void (0) : __assert_fail ("(!CreateMissingDirectories || UseTemporary) && \"CreateMissingDirectories is only allowed when using temporary files\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 725, __extension__ __PRETTY_FUNCTION__)); | |||
726 | ||||
727 | std::string OutFile, TempFile; | |||
728 | if (!OutputPath.empty()) { | |||
729 | OutFile = OutputPath; | |||
730 | } else if (InFile == "-") { | |||
731 | OutFile = "-"; | |||
732 | } else if (!Extension.empty()) { | |||
733 | SmallString<128> Path(InFile); | |||
734 | llvm::sys::path::replace_extension(Path, Extension); | |||
735 | OutFile = Path.str(); | |||
736 | } else { | |||
737 | OutFile = "-"; | |||
738 | } | |||
739 | ||||
740 | std::unique_ptr<llvm::raw_fd_ostream> OS; | |||
741 | std::string OSFile; | |||
742 | ||||
743 | if (UseTemporary) { | |||
744 | if (OutFile == "-") | |||
745 | UseTemporary = false; | |||
746 | else { | |||
747 | llvm::sys::fs::file_status Status; | |||
748 | llvm::sys::fs::status(OutputPath, Status); | |||
749 | if (llvm::sys::fs::exists(Status)) { | |||
750 | // Fail early if we can't write to the final destination. | |||
751 | if (!llvm::sys::fs::can_write(OutputPath)) { | |||
752 | Error = make_error_code(llvm::errc::operation_not_permitted); | |||
753 | return nullptr; | |||
754 | } | |||
755 | ||||
756 | // Don't use a temporary if the output is a special file. This handles | |||
757 | // things like '-o /dev/null' | |||
758 | if (!llvm::sys::fs::is_regular_file(Status)) | |||
759 | UseTemporary = false; | |||
760 | } | |||
761 | } | |||
762 | } | |||
763 | ||||
764 | if (UseTemporary) { | |||
765 | // Create a temporary file. | |||
766 | // Insert -%%%%%%%% before the extension (if any), and because some tools | |||
767 | // (noticeable, clang's own GlobalModuleIndex.cpp) glob for build | |||
768 | // artifacts, also append .tmp. | |||
769 | StringRef OutputExtension = llvm::sys::path::extension(OutFile); | |||
770 | SmallString<128> TempPath = | |||
771 | StringRef(OutFile).drop_back(OutputExtension.size()); | |||
772 | TempPath += "-%%%%%%%%"; | |||
773 | TempPath += OutputExtension; | |||
774 | TempPath += ".tmp"; | |||
775 | int fd; | |||
776 | std::error_code EC = | |||
777 | llvm::sys::fs::createUniqueFile(TempPath, fd, TempPath); | |||
778 | ||||
779 | if (CreateMissingDirectories && | |||
780 | EC == llvm::errc::no_such_file_or_directory) { | |||
781 | StringRef Parent = llvm::sys::path::parent_path(OutputPath); | |||
782 | EC = llvm::sys::fs::create_directories(Parent); | |||
783 | if (!EC) { | |||
784 | EC = llvm::sys::fs::createUniqueFile(TempPath, fd, TempPath); | |||
785 | } | |||
786 | } | |||
787 | ||||
788 | if (!EC) { | |||
789 | OS.reset(new llvm::raw_fd_ostream(fd, /*shouldClose=*/true)); | |||
790 | OSFile = TempFile = TempPath.str(); | |||
791 | } | |||
792 | // If we failed to create the temporary, fallback to writing to the file | |||
793 | // directly. This handles the corner case where we cannot write to the | |||
794 | // directory, but can write to the file. | |||
795 | } | |||
796 | ||||
797 | if (!OS) { | |||
798 | OSFile = OutFile; | |||
799 | OS.reset(new llvm::raw_fd_ostream( | |||
800 | OSFile, Error, | |||
801 | (Binary ? llvm::sys::fs::F_None : llvm::sys::fs::F_Text))); | |||
802 | if (Error) | |||
803 | return nullptr; | |||
804 | } | |||
805 | ||||
806 | // Make sure the out stream file gets removed if we crash. | |||
807 | if (RemoveFileOnSignal) | |||
808 | llvm::sys::RemoveFileOnSignal(OSFile); | |||
809 | ||||
810 | if (ResultPathName) | |||
811 | *ResultPathName = OutFile; | |||
812 | if (TempPathName) | |||
813 | *TempPathName = TempFile; | |||
814 | ||||
815 | if (!Binary || OS->supportsSeeking()) | |||
816 | return std::move(OS); | |||
817 | ||||
818 | auto B = llvm::make_unique<llvm::buffer_ostream>(*OS); | |||
819 | assert(!NonSeekStream)(static_cast <bool> (!NonSeekStream) ? void (0) : __assert_fail ("!NonSeekStream", "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 819, __extension__ __PRETTY_FUNCTION__)); | |||
820 | NonSeekStream = std::move(OS); | |||
821 | return std::move(B); | |||
822 | } | |||
823 | ||||
824 | // Initialization Utilities | |||
825 | ||||
826 | bool CompilerInstance::InitializeSourceManager(const FrontendInputFile &Input){ | |||
827 | return InitializeSourceManager( | |||
828 | Input, getDiagnostics(), getFileManager(), getSourceManager(), | |||
829 | hasPreprocessor() ? &getPreprocessor().getHeaderSearchInfo() : nullptr, | |||
830 | getDependencyOutputOpts(), getFrontendOpts()); | |||
831 | } | |||
832 | ||||
833 | // static | |||
834 | bool CompilerInstance::InitializeSourceManager( | |||
835 | const FrontendInputFile &Input, DiagnosticsEngine &Diags, | |||
836 | FileManager &FileMgr, SourceManager &SourceMgr, HeaderSearch *HS, | |||
837 | DependencyOutputOptions &DepOpts, const FrontendOptions &Opts) { | |||
838 | SrcMgr::CharacteristicKind Kind = | |||
839 | Input.getKind().getFormat() == InputKind::ModuleMap | |||
840 | ? Input.isSystem() ? SrcMgr::C_System_ModuleMap | |||
841 | : SrcMgr::C_User_ModuleMap | |||
842 | : Input.isSystem() ? SrcMgr::C_System : SrcMgr::C_User; | |||
843 | ||||
844 | if (Input.isBuffer()) { | |||
845 | SourceMgr.setMainFileID(SourceMgr.createFileID(SourceManager::Unowned, | |||
846 | Input.getBuffer(), Kind)); | |||
847 | assert(SourceMgr.getMainFileID().isValid() &&(static_cast <bool> (SourceMgr.getMainFileID().isValid( ) && "Couldn't establish MainFileID!") ? void (0) : __assert_fail ("SourceMgr.getMainFileID().isValid() && \"Couldn't establish MainFileID!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 848, __extension__ __PRETTY_FUNCTION__)) | |||
848 | "Couldn't establish MainFileID!")(static_cast <bool> (SourceMgr.getMainFileID().isValid( ) && "Couldn't establish MainFileID!") ? void (0) : __assert_fail ("SourceMgr.getMainFileID().isValid() && \"Couldn't establish MainFileID!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 848, __extension__ __PRETTY_FUNCTION__)); | |||
849 | return true; | |||
850 | } | |||
851 | ||||
852 | StringRef InputFile = Input.getFile(); | |||
853 | ||||
854 | // Figure out where to get and map in the main file. | |||
855 | if (InputFile != "-") { | |||
856 | const FileEntry *File = FileMgr.getFile(InputFile, /*OpenFile=*/true); | |||
857 | if (!File) { | |||
858 | Diags.Report(diag::err_fe_error_reading) << InputFile; | |||
859 | return false; | |||
860 | } | |||
861 | ||||
862 | // The natural SourceManager infrastructure can't currently handle named | |||
863 | // pipes, but we would at least like to accept them for the main | |||
864 | // file. Detect them here, read them with the volatile flag so FileMgr will | |||
865 | // pick up the correct size, and simply override their contents as we do for | |||
866 | // STDIN. | |||
867 | if (File->isNamedPipe()) { | |||
868 | auto MB = FileMgr.getBufferForFile(File, /*isVolatile=*/true); | |||
869 | if (MB) { | |||
870 | // Create a new virtual file that will have the correct size. | |||
871 | File = FileMgr.getVirtualFile(InputFile, (*MB)->getBufferSize(), 0); | |||
872 | SourceMgr.overrideFileContents(File, std::move(*MB)); | |||
873 | } else { | |||
874 | Diags.Report(diag::err_cannot_open_file) << InputFile | |||
875 | << MB.getError().message(); | |||
876 | return false; | |||
877 | } | |||
878 | } | |||
879 | ||||
880 | SourceMgr.setMainFileID( | |||
881 | SourceMgr.createFileID(File, SourceLocation(), Kind)); | |||
882 | } else { | |||
883 | llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> SBOrErr = | |||
884 | llvm::MemoryBuffer::getSTDIN(); | |||
885 | if (std::error_code EC = SBOrErr.getError()) { | |||
886 | Diags.Report(diag::err_fe_error_reading_stdin) << EC.message(); | |||
887 | return false; | |||
888 | } | |||
889 | std::unique_ptr<llvm::MemoryBuffer> SB = std::move(SBOrErr.get()); | |||
890 | ||||
891 | const FileEntry *File = FileMgr.getVirtualFile(SB->getBufferIdentifier(), | |||
892 | SB->getBufferSize(), 0); | |||
893 | SourceMgr.setMainFileID( | |||
894 | SourceMgr.createFileID(File, SourceLocation(), Kind)); | |||
895 | SourceMgr.overrideFileContents(File, std::move(SB)); | |||
896 | } | |||
897 | ||||
898 | assert(SourceMgr.getMainFileID().isValid() &&(static_cast <bool> (SourceMgr.getMainFileID().isValid( ) && "Couldn't establish MainFileID!") ? void (0) : __assert_fail ("SourceMgr.getMainFileID().isValid() && \"Couldn't establish MainFileID!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 899, __extension__ __PRETTY_FUNCTION__)) | |||
899 | "Couldn't establish MainFileID!")(static_cast <bool> (SourceMgr.getMainFileID().isValid( ) && "Couldn't establish MainFileID!") ? void (0) : __assert_fail ("SourceMgr.getMainFileID().isValid() && \"Couldn't establish MainFileID!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 899, __extension__ __PRETTY_FUNCTION__)); | |||
900 | return true; | |||
901 | } | |||
902 | ||||
903 | // High-Level Operations | |||
904 | ||||
905 | bool CompilerInstance::ExecuteAction(FrontendAction &Act) { | |||
906 | assert(hasDiagnostics() && "Diagnostics engine is not initialized!")(static_cast <bool> (hasDiagnostics() && "Diagnostics engine is not initialized!" ) ? void (0) : __assert_fail ("hasDiagnostics() && \"Diagnostics engine is not initialized!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 906, __extension__ __PRETTY_FUNCTION__)); | |||
907 | assert(!getFrontendOpts().ShowHelp && "Client must handle '-help'!")(static_cast <bool> (!getFrontendOpts().ShowHelp && "Client must handle '-help'!") ? void (0) : __assert_fail ("!getFrontendOpts().ShowHelp && \"Client must handle '-help'!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 907, __extension__ __PRETTY_FUNCTION__)); | |||
908 | assert(!getFrontendOpts().ShowVersion && "Client must handle '-version'!")(static_cast <bool> (!getFrontendOpts().ShowVersion && "Client must handle '-version'!") ? void (0) : __assert_fail ("!getFrontendOpts().ShowVersion && \"Client must handle '-version'!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 908, __extension__ __PRETTY_FUNCTION__)); | |||
909 | ||||
910 | // FIXME: Take this as an argument, once all the APIs we used have moved to | |||
911 | // taking it as an input instead of hard-coding llvm::errs. | |||
912 | raw_ostream &OS = llvm::errs(); | |||
913 | ||||
914 | // Create the target instance. | |||
915 | setTarget(TargetInfo::CreateTargetInfo(getDiagnostics(), | |||
916 | getInvocation().TargetOpts)); | |||
917 | if (!hasTarget()) | |||
918 | return false; | |||
919 | ||||
920 | // Create TargetInfo for the other side of CUDA and OpenMP compilation. | |||
921 | if ((getLangOpts().CUDA || getLangOpts().OpenMPIsDevice) && | |||
922 | !getFrontendOpts().AuxTriple.empty()) { | |||
923 | auto TO = std::make_shared<TargetOptions>(); | |||
924 | TO->Triple = getFrontendOpts().AuxTriple; | |||
925 | TO->HostTriple = getTarget().getTriple().str(); | |||
926 | setAuxTarget(TargetInfo::CreateTargetInfo(getDiagnostics(), TO)); | |||
927 | } | |||
928 | ||||
929 | // Inform the target of the language options. | |||
930 | // | |||
931 | // FIXME: We shouldn't need to do this, the target should be immutable once | |||
932 | // created. This complexity should be lifted elsewhere. | |||
933 | getTarget().adjust(getLangOpts()); | |||
934 | ||||
935 | // Adjust target options based on codegen options. | |||
936 | getTarget().adjustTargetOptions(getCodeGenOpts(), getTargetOpts()); | |||
937 | ||||
938 | // rewriter project will change target built-in bool type from its default. | |||
939 | if (getFrontendOpts().ProgramAction == frontend::RewriteObjC) | |||
940 | getTarget().noSignedCharForObjCBool(); | |||
941 | ||||
942 | // Validate/process some options. | |||
943 | if (getHeaderSearchOpts().Verbose) | |||
944 | OS << "clang -cc1 version " CLANG_VERSION_STRING"7.0.0" | |||
945 | << " based upon " << BACKEND_PACKAGE_STRING"LLVM 7.0.0" | |||
946 | << " default target " << llvm::sys::getDefaultTargetTriple() << "\n"; | |||
947 | ||||
948 | if (getFrontendOpts().ShowTimers) | |||
949 | createFrontendTimer(); | |||
950 | ||||
951 | if (getFrontendOpts().ShowStats || !getFrontendOpts().StatsFile.empty()) | |||
952 | llvm::EnableStatistics(false); | |||
953 | ||||
954 | for (const FrontendInputFile &FIF : getFrontendOpts().Inputs) { | |||
955 | // Reset the ID tables if we are reusing the SourceManager and parsing | |||
956 | // regular files. | |||
957 | if (hasSourceManager() && !Act.isModelParsingAction()) | |||
958 | getSourceManager().clearIDTables(); | |||
959 | ||||
960 | if (Act.BeginSourceFile(*this, FIF)) { | |||
961 | Act.Execute(); | |||
962 | Act.EndSourceFile(); | |||
963 | } | |||
964 | } | |||
965 | ||||
966 | // Notify the diagnostic client that all files were processed. | |||
967 | getDiagnostics().getClient()->finish(); | |||
968 | ||||
969 | if (getDiagnosticOpts().ShowCarets) { | |||
970 | // We can have multiple diagnostics sharing one diagnostic client. | |||
971 | // Get the total number of warnings/errors from the client. | |||
972 | unsigned NumWarnings = getDiagnostics().getClient()->getNumWarnings(); | |||
973 | unsigned NumErrors = getDiagnostics().getClient()->getNumErrors(); | |||
974 | ||||
975 | if (NumWarnings) | |||
976 | OS << NumWarnings << " warning" << (NumWarnings == 1 ? "" : "s"); | |||
977 | if (NumWarnings && NumErrors) | |||
978 | OS << " and "; | |||
979 | if (NumErrors) | |||
980 | OS << NumErrors << " error" << (NumErrors == 1 ? "" : "s"); | |||
981 | if (NumWarnings || NumErrors) { | |||
982 | OS << " generated"; | |||
983 | if (getLangOpts().CUDA) { | |||
984 | if (!getLangOpts().CUDAIsDevice) { | |||
985 | OS << " when compiling for host"; | |||
986 | } else { | |||
987 | OS << " when compiling for " << getTargetOpts().CPU; | |||
988 | } | |||
989 | } | |||
990 | OS << ".\n"; | |||
991 | } | |||
992 | } | |||
993 | ||||
994 | if (getFrontendOpts().ShowStats) { | |||
995 | if (hasFileManager()) { | |||
996 | getFileManager().PrintStats(); | |||
997 | OS << '\n'; | |||
998 | } | |||
999 | llvm::PrintStatistics(OS); | |||
1000 | } | |||
1001 | StringRef StatsFile = getFrontendOpts().StatsFile; | |||
1002 | if (!StatsFile.empty()) { | |||
1003 | std::error_code EC; | |||
1004 | auto StatS = llvm::make_unique<llvm::raw_fd_ostream>(StatsFile, EC, | |||
1005 | llvm::sys::fs::F_Text); | |||
1006 | if (EC) { | |||
1007 | getDiagnostics().Report(diag::warn_fe_unable_to_open_stats_file) | |||
1008 | << StatsFile << EC.message(); | |||
1009 | } else { | |||
1010 | llvm::PrintStatisticsJSON(*StatS); | |||
1011 | } | |||
1012 | } | |||
1013 | ||||
1014 | return !getDiagnostics().getClient()->getNumErrors(); | |||
1015 | } | |||
1016 | ||||
1017 | /// Determine the appropriate source input kind based on language | |||
1018 | /// options. | |||
1019 | static InputKind::Language getLanguageFromOptions(const LangOptions &LangOpts) { | |||
1020 | if (LangOpts.OpenCL) | |||
1021 | return InputKind::OpenCL; | |||
1022 | if (LangOpts.CUDA) | |||
1023 | return InputKind::CUDA; | |||
1024 | if (LangOpts.ObjC1) | |||
1025 | return LangOpts.CPlusPlus ? InputKind::ObjCXX : InputKind::ObjC; | |||
1026 | return LangOpts.CPlusPlus ? InputKind::CXX : InputKind::C; | |||
1027 | } | |||
1028 | ||||
1029 | /// Compile a module file for the given module, using the options | |||
1030 | /// provided by the importing compiler instance. Returns true if the module | |||
1031 | /// was built without errors. | |||
1032 | static bool | |||
1033 | compileModuleImpl(CompilerInstance &ImportingInstance, SourceLocation ImportLoc, | |||
1034 | StringRef ModuleName, FrontendInputFile Input, | |||
1035 | StringRef OriginalModuleMapFile, StringRef ModuleFileName, | |||
1036 | llvm::function_ref<void(CompilerInstance &)> PreBuildStep = | |||
1037 | [](CompilerInstance &) {}, | |||
1038 | llvm::function_ref<void(CompilerInstance &)> PostBuildStep = | |||
1039 | [](CompilerInstance &) {}) { | |||
1040 | // Construct a compiler invocation for creating this module. | |||
1041 | auto Invocation = | |||
1042 | std::make_shared<CompilerInvocation>(ImportingInstance.getInvocation()); | |||
1043 | ||||
1044 | PreprocessorOptions &PPOpts = Invocation->getPreprocessorOpts(); | |||
1045 | ||||
1046 | // For any options that aren't intended to affect how a module is built, | |||
1047 | // reset them to their default values. | |||
1048 | Invocation->getLangOpts()->resetNonModularOptions(); | |||
1049 | PPOpts.resetNonModularOptions(); | |||
1050 | ||||
1051 | // Remove any macro definitions that are explicitly ignored by the module. | |||
1052 | // They aren't supposed to affect how the module is built anyway. | |||
1053 | HeaderSearchOptions &HSOpts = Invocation->getHeaderSearchOpts(); | |||
1054 | PPOpts.Macros.erase( | |||
1055 | std::remove_if(PPOpts.Macros.begin(), PPOpts.Macros.end(), | |||
1056 | [&HSOpts](const std::pair<std::string, bool> &def) { | |||
1057 | StringRef MacroDef = def.first; | |||
1058 | return HSOpts.ModulesIgnoreMacros.count( | |||
1059 | llvm::CachedHashString(MacroDef.split('=').first)) > 0; | |||
1060 | }), | |||
1061 | PPOpts.Macros.end()); | |||
1062 | ||||
1063 | // If the original compiler invocation had -fmodule-name, pass it through. | |||
1064 | Invocation->getLangOpts()->ModuleName = | |||
1065 | ImportingInstance.getInvocation().getLangOpts()->ModuleName; | |||
1066 | ||||
1067 | // Note the name of the module we're building. | |||
1068 | Invocation->getLangOpts()->CurrentModule = ModuleName; | |||
1069 | ||||
1070 | // Make sure that the failed-module structure has been allocated in | |||
1071 | // the importing instance, and propagate the pointer to the newly-created | |||
1072 | // instance. | |||
1073 | PreprocessorOptions &ImportingPPOpts | |||
1074 | = ImportingInstance.getInvocation().getPreprocessorOpts(); | |||
1075 | if (!ImportingPPOpts.FailedModules) | |||
1076 | ImportingPPOpts.FailedModules = | |||
1077 | std::make_shared<PreprocessorOptions::FailedModulesSet>(); | |||
1078 | PPOpts.FailedModules = ImportingPPOpts.FailedModules; | |||
1079 | ||||
1080 | // If there is a module map file, build the module using the module map. | |||
1081 | // Set up the inputs/outputs so that we build the module from its umbrella | |||
1082 | // header. | |||
1083 | FrontendOptions &FrontendOpts = Invocation->getFrontendOpts(); | |||
1084 | FrontendOpts.OutputFile = ModuleFileName.str(); | |||
1085 | FrontendOpts.DisableFree = false; | |||
1086 | FrontendOpts.GenerateGlobalModuleIndex = false; | |||
1087 | FrontendOpts.BuildingImplicitModule = true; | |||
1088 | FrontendOpts.OriginalModuleMap = OriginalModuleMapFile; | |||
1089 | // Force implicitly-built modules to hash the content of the module file. | |||
1090 | HSOpts.ModulesHashContent = true; | |||
1091 | FrontendOpts.Inputs = {Input}; | |||
1092 | ||||
1093 | // Don't free the remapped file buffers; they are owned by our caller. | |||
1094 | PPOpts.RetainRemappedFileBuffers = true; | |||
1095 | ||||
1096 | Invocation->getDiagnosticOpts().VerifyDiagnostics = 0; | |||
1097 | assert(ImportingInstance.getInvocation().getModuleHash() ==(static_cast <bool> (ImportingInstance.getInvocation(). getModuleHash() == Invocation->getModuleHash() && "Module hash mismatch!" ) ? void (0) : __assert_fail ("ImportingInstance.getInvocation().getModuleHash() == Invocation->getModuleHash() && \"Module hash mismatch!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1098, __extension__ __PRETTY_FUNCTION__)) | |||
1098 | Invocation->getModuleHash() && "Module hash mismatch!")(static_cast <bool> (ImportingInstance.getInvocation(). getModuleHash() == Invocation->getModuleHash() && "Module hash mismatch!" ) ? void (0) : __assert_fail ("ImportingInstance.getInvocation().getModuleHash() == Invocation->getModuleHash() && \"Module hash mismatch!\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1098, __extension__ __PRETTY_FUNCTION__)); | |||
1099 | ||||
1100 | // Construct a compiler instance that will be used to actually create the | |||
1101 | // module. Since we're sharing a PCMCache, | |||
1102 | // CompilerInstance::CompilerInstance is responsible for finalizing the | |||
1103 | // buffers to prevent use-after-frees. | |||
1104 | CompilerInstance Instance(ImportingInstance.getPCHContainerOperations(), | |||
1105 | &ImportingInstance.getPreprocessor().getPCMCache()); | |||
1106 | auto &Inv = *Invocation; | |||
1107 | Instance.setInvocation(std::move(Invocation)); | |||
1108 | ||||
1109 | Instance.createDiagnostics(new ForwardingDiagnosticConsumer( | |||
1110 | ImportingInstance.getDiagnosticClient()), | |||
1111 | /*ShouldOwnClient=*/true); | |||
1112 | ||||
1113 | Instance.setVirtualFileSystem(&ImportingInstance.getVirtualFileSystem()); | |||
1114 | ||||
1115 | // Note that this module is part of the module build stack, so that we | |||
1116 | // can detect cycles in the module graph. | |||
1117 | Instance.setFileManager(&ImportingInstance.getFileManager()); | |||
1118 | Instance.createSourceManager(Instance.getFileManager()); | |||
1119 | SourceManager &SourceMgr = Instance.getSourceManager(); | |||
1120 | SourceMgr.setModuleBuildStack( | |||
1121 | ImportingInstance.getSourceManager().getModuleBuildStack()); | |||
1122 | SourceMgr.pushModuleBuildStack(ModuleName, | |||
1123 | FullSourceLoc(ImportLoc, ImportingInstance.getSourceManager())); | |||
1124 | ||||
1125 | // If we're collecting module dependencies, we need to share a collector | |||
1126 | // between all of the module CompilerInstances. Other than that, we don't | |||
1127 | // want to produce any dependency output from the module build. | |||
1128 | Instance.setModuleDepCollector(ImportingInstance.getModuleDepCollector()); | |||
1129 | Inv.getDependencyOutputOpts() = DependencyOutputOptions(); | |||
1130 | ||||
1131 | ImportingInstance.getDiagnostics().Report(ImportLoc, | |||
1132 | diag::remark_module_build) | |||
1133 | << ModuleName << ModuleFileName; | |||
1134 | ||||
1135 | PreBuildStep(Instance); | |||
1136 | ||||
1137 | // Execute the action to actually build the module in-place. Use a separate | |||
1138 | // thread so that we get a stack large enough. | |||
1139 | llvm::CrashRecoveryContext CRC; | |||
1140 | CRC.RunSafelyOnThread( | |||
1141 | [&]() { | |||
1142 | GenerateModuleFromModuleMapAction Action; | |||
1143 | Instance.ExecuteAction(Action); | |||
1144 | }, | |||
1145 | DesiredStackSize); | |||
1146 | ||||
1147 | PostBuildStep(Instance); | |||
1148 | ||||
1149 | ImportingInstance.getDiagnostics().Report(ImportLoc, | |||
1150 | diag::remark_module_build_done) | |||
1151 | << ModuleName; | |||
1152 | ||||
1153 | // Delete the temporary module map file. | |||
1154 | // FIXME: Even though we're executing under crash protection, it would still | |||
1155 | // be nice to do this with RemoveFileOnSignal when we can. However, that | |||
1156 | // doesn't make sense for all clients, so clean this up manually. | |||
1157 | Instance.clearOutputFiles(/*EraseFiles=*/true); | |||
1158 | ||||
1159 | return !Instance.getDiagnostics().hasErrorOccurred(); | |||
1160 | } | |||
1161 | ||||
1162 | static const FileEntry *getPublicModuleMap(const FileEntry *File, | |||
1163 | FileManager &FileMgr) { | |||
1164 | StringRef Filename = llvm::sys::path::filename(File->getName()); | |||
1165 | SmallString<128> PublicFilename(File->getDir()->getName()); | |||
1166 | if (Filename == "module_private.map") | |||
1167 | llvm::sys::path::append(PublicFilename, "module.map"); | |||
1168 | else if (Filename == "module.private.modulemap") | |||
1169 | llvm::sys::path::append(PublicFilename, "module.modulemap"); | |||
1170 | else | |||
1171 | return nullptr; | |||
1172 | return FileMgr.getFile(PublicFilename); | |||
1173 | } | |||
1174 | ||||
1175 | /// Compile a module file for the given module, using the options | |||
1176 | /// provided by the importing compiler instance. Returns true if the module | |||
1177 | /// was built without errors. | |||
1178 | static bool compileModuleImpl(CompilerInstance &ImportingInstance, | |||
1179 | SourceLocation ImportLoc, | |||
1180 | Module *Module, | |||
1181 | StringRef ModuleFileName) { | |||
1182 | InputKind IK(getLanguageFromOptions(ImportingInstance.getLangOpts()), | |||
1183 | InputKind::ModuleMap); | |||
1184 | ||||
1185 | // Get or create the module map that we'll use to build this module. | |||
1186 | ModuleMap &ModMap | |||
1187 | = ImportingInstance.getPreprocessor().getHeaderSearchInfo().getModuleMap(); | |||
1188 | bool Result; | |||
1189 | if (const FileEntry *ModuleMapFile = | |||
1190 | ModMap.getContainingModuleMapFile(Module)) { | |||
1191 | // Canonicalize compilation to start with the public module map. This is | |||
1192 | // vital for submodules declarations in the private module maps to be | |||
1193 | // correctly parsed when depending on a top level module in the public one. | |||
1194 | if (const FileEntry *PublicMMFile = getPublicModuleMap( | |||
1195 | ModuleMapFile, ImportingInstance.getFileManager())) | |||
1196 | ModuleMapFile = PublicMMFile; | |||
1197 | ||||
1198 | // Use the module map where this module resides. | |||
1199 | Result = compileModuleImpl( | |||
1200 | ImportingInstance, ImportLoc, Module->getTopLevelModuleName(), | |||
1201 | FrontendInputFile(ModuleMapFile->getName(), IK, +Module->IsSystem), | |||
1202 | ModMap.getModuleMapFileForUniquing(Module)->getName(), | |||
1203 | ModuleFileName); | |||
1204 | } else { | |||
1205 | // FIXME: We only need to fake up an input file here as a way of | |||
1206 | // transporting the module's directory to the module map parser. We should | |||
1207 | // be able to do that more directly, and parse from a memory buffer without | |||
1208 | // inventing this file. | |||
1209 | SmallString<128> FakeModuleMapFile(Module->Directory->getName()); | |||
1210 | llvm::sys::path::append(FakeModuleMapFile, "__inferred_module.map"); | |||
1211 | ||||
1212 | std::string InferredModuleMapContent; | |||
1213 | llvm::raw_string_ostream OS(InferredModuleMapContent); | |||
1214 | Module->print(OS); | |||
1215 | OS.flush(); | |||
1216 | ||||
1217 | Result = compileModuleImpl( | |||
1218 | ImportingInstance, ImportLoc, Module->getTopLevelModuleName(), | |||
1219 | FrontendInputFile(FakeModuleMapFile, IK, +Module->IsSystem), | |||
1220 | ModMap.getModuleMapFileForUniquing(Module)->getName(), | |||
1221 | ModuleFileName, | |||
1222 | [&](CompilerInstance &Instance) { | |||
1223 | std::unique_ptr<llvm::MemoryBuffer> ModuleMapBuffer = | |||
1224 | llvm::MemoryBuffer::getMemBuffer(InferredModuleMapContent); | |||
1225 | ModuleMapFile = Instance.getFileManager().getVirtualFile( | |||
1226 | FakeModuleMapFile, InferredModuleMapContent.size(), 0); | |||
1227 | Instance.getSourceManager().overrideFileContents( | |||
1228 | ModuleMapFile, std::move(ModuleMapBuffer)); | |||
1229 | }); | |||
1230 | } | |||
1231 | ||||
1232 | // We've rebuilt a module. If we're allowed to generate or update the global | |||
1233 | // module index, record that fact in the importing compiler instance. | |||
1234 | if (ImportingInstance.getFrontendOpts().GenerateGlobalModuleIndex) { | |||
1235 | ImportingInstance.setBuildGlobalModuleIndex(true); | |||
1236 | } | |||
1237 | ||||
1238 | return Result; | |||
1239 | } | |||
1240 | ||||
1241 | static bool compileAndLoadModule(CompilerInstance &ImportingInstance, | |||
1242 | SourceLocation ImportLoc, | |||
1243 | SourceLocation ModuleNameLoc, Module *Module, | |||
1244 | StringRef ModuleFileName) { | |||
1245 | DiagnosticsEngine &Diags = ImportingInstance.getDiagnostics(); | |||
1246 | ||||
1247 | auto diagnoseBuildFailure = [&] { | |||
1248 | Diags.Report(ModuleNameLoc, diag::err_module_not_built) | |||
1249 | << Module->Name << SourceRange(ImportLoc, ModuleNameLoc); | |||
1250 | }; | |||
1251 | ||||
1252 | // FIXME: have LockFileManager return an error_code so that we can | |||
1253 | // avoid the mkdir when the directory already exists. | |||
1254 | StringRef Dir = llvm::sys::path::parent_path(ModuleFileName); | |||
1255 | llvm::sys::fs::create_directories(Dir); | |||
1256 | ||||
1257 | while (1) { | |||
1258 | unsigned ModuleLoadCapabilities = ASTReader::ARR_Missing; | |||
1259 | llvm::LockFileManager Locked(ModuleFileName); | |||
1260 | switch (Locked) { | |||
1261 | case llvm::LockFileManager::LFS_Error: | |||
1262 | // PCMCache takes care of correctness and locks are only necessary for | |||
1263 | // performance. Fallback to building the module in case of any lock | |||
1264 | // related errors. | |||
1265 | Diags.Report(ModuleNameLoc, diag::remark_module_lock_failure) | |||
1266 | << Module->Name << Locked.getErrorMessage(); | |||
1267 | // Clear out any potential leftover. | |||
1268 | Locked.unsafeRemoveLockFile(); | |||
1269 | // FALLTHROUGH | |||
1270 | case llvm::LockFileManager::LFS_Owned: | |||
1271 | // We're responsible for building the module ourselves. | |||
1272 | if (!compileModuleImpl(ImportingInstance, ModuleNameLoc, Module, | |||
1273 | ModuleFileName)) { | |||
1274 | diagnoseBuildFailure(); | |||
1275 | return false; | |||
1276 | } | |||
1277 | break; | |||
1278 | ||||
1279 | case llvm::LockFileManager::LFS_Shared: | |||
1280 | // Someone else is responsible for building the module. Wait for them to | |||
1281 | // finish. | |||
1282 | switch (Locked.waitForUnlock()) { | |||
1283 | case llvm::LockFileManager::Res_Success: | |||
1284 | ModuleLoadCapabilities |= ASTReader::ARR_OutOfDate; | |||
1285 | break; | |||
1286 | case llvm::LockFileManager::Res_OwnerDied: | |||
1287 | continue; // try again to get the lock. | |||
1288 | case llvm::LockFileManager::Res_Timeout: | |||
1289 | // Since PCMCache takes care of correctness, we try waiting for another | |||
1290 | // process to complete the build so clang does not do it done twice. If | |||
1291 | // case of timeout, build it ourselves. | |||
1292 | Diags.Report(ModuleNameLoc, diag::remark_module_lock_timeout) | |||
1293 | << Module->Name; | |||
1294 | // Clear the lock file so that future invocations can make progress. | |||
1295 | Locked.unsafeRemoveLockFile(); | |||
1296 | continue; | |||
1297 | } | |||
1298 | break; | |||
1299 | } | |||
1300 | ||||
1301 | // Try to read the module file, now that we've compiled it. | |||
1302 | ASTReader::ASTReadResult ReadResult = | |||
1303 | ImportingInstance.getModuleManager()->ReadAST( | |||
1304 | ModuleFileName, serialization::MK_ImplicitModule, ImportLoc, | |||
1305 | ModuleLoadCapabilities); | |||
1306 | ||||
1307 | if (ReadResult == ASTReader::OutOfDate && | |||
1308 | Locked == llvm::LockFileManager::LFS_Shared) { | |||
1309 | // The module may be out of date in the presence of file system races, | |||
1310 | // or if one of its imports depends on header search paths that are not | |||
1311 | // consistent with this ImportingInstance. Try again... | |||
1312 | continue; | |||
1313 | } else if (ReadResult == ASTReader::Missing) { | |||
1314 | diagnoseBuildFailure(); | |||
1315 | } else if (ReadResult != ASTReader::Success && | |||
1316 | !Diags.hasErrorOccurred()) { | |||
1317 | // The ASTReader didn't diagnose the error, so conservatively report it. | |||
1318 | diagnoseBuildFailure(); | |||
1319 | } | |||
1320 | return ReadResult == ASTReader::Success; | |||
1321 | } | |||
1322 | } | |||
1323 | ||||
1324 | /// Diagnose differences between the current definition of the given | |||
1325 | /// configuration macro and the definition provided on the command line. | |||
1326 | static void checkConfigMacro(Preprocessor &PP, StringRef ConfigMacro, | |||
1327 | Module *Mod, SourceLocation ImportLoc) { | |||
1328 | IdentifierInfo *Id = PP.getIdentifierInfo(ConfigMacro); | |||
1329 | SourceManager &SourceMgr = PP.getSourceManager(); | |||
1330 | ||||
1331 | // If this identifier has never had a macro definition, then it could | |||
1332 | // not have changed. | |||
1333 | if (!Id->hadMacroDefinition()) | |||
1334 | return; | |||
1335 | auto *LatestLocalMD = PP.getLocalMacroDirectiveHistory(Id); | |||
1336 | ||||
1337 | // Find the macro definition from the command line. | |||
1338 | MacroInfo *CmdLineDefinition = nullptr; | |||
1339 | for (auto *MD = LatestLocalMD; MD; MD = MD->getPrevious()) { | |||
1340 | // We only care about the predefines buffer. | |||
1341 | FileID FID = SourceMgr.getFileID(MD->getLocation()); | |||
1342 | if (FID.isInvalid() || FID != PP.getPredefinesFileID()) | |||
1343 | continue; | |||
1344 | if (auto *DMD = dyn_cast<DefMacroDirective>(MD)) | |||
1345 | CmdLineDefinition = DMD->getMacroInfo(); | |||
1346 | break; | |||
1347 | } | |||
1348 | ||||
1349 | auto *CurrentDefinition = PP.getMacroInfo(Id); | |||
1350 | if (CurrentDefinition == CmdLineDefinition) { | |||
1351 | // Macro matches. Nothing to do. | |||
1352 | } else if (!CurrentDefinition) { | |||
1353 | // This macro was defined on the command line, then #undef'd later. | |||
1354 | // Complain. | |||
1355 | PP.Diag(ImportLoc, diag::warn_module_config_macro_undef) | |||
1356 | << true << ConfigMacro << Mod->getFullModuleName(); | |||
1357 | auto LatestDef = LatestLocalMD->getDefinition(); | |||
1358 | assert(LatestDef.isUndefined() &&(static_cast <bool> (LatestDef.isUndefined() && "predefined macro went away with no #undef?") ? void (0) : __assert_fail ("LatestDef.isUndefined() && \"predefined macro went away with no #undef?\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1359, __extension__ __PRETTY_FUNCTION__)) | |||
1359 | "predefined macro went away with no #undef?")(static_cast <bool> (LatestDef.isUndefined() && "predefined macro went away with no #undef?") ? void (0) : __assert_fail ("LatestDef.isUndefined() && \"predefined macro went away with no #undef?\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1359, __extension__ __PRETTY_FUNCTION__)); | |||
1360 | PP.Diag(LatestDef.getUndefLocation(), diag::note_module_def_undef_here) | |||
1361 | << true; | |||
1362 | return; | |||
1363 | } else if (!CmdLineDefinition) { | |||
1364 | // There was no definition for this macro in the predefines buffer, | |||
1365 | // but there was a local definition. Complain. | |||
1366 | PP.Diag(ImportLoc, diag::warn_module_config_macro_undef) | |||
1367 | << false << ConfigMacro << Mod->getFullModuleName(); | |||
1368 | PP.Diag(CurrentDefinition->getDefinitionLoc(), | |||
1369 | diag::note_module_def_undef_here) | |||
1370 | << false; | |||
1371 | } else if (!CurrentDefinition->isIdenticalTo(*CmdLineDefinition, PP, | |||
1372 | /*Syntactically=*/true)) { | |||
1373 | // The macro definitions differ. | |||
1374 | PP.Diag(ImportLoc, diag::warn_module_config_macro_undef) | |||
1375 | << false << ConfigMacro << Mod->getFullModuleName(); | |||
1376 | PP.Diag(CurrentDefinition->getDefinitionLoc(), | |||
1377 | diag::note_module_def_undef_here) | |||
1378 | << false; | |||
1379 | } | |||
1380 | } | |||
1381 | ||||
1382 | /// Write a new timestamp file with the given path. | |||
1383 | static void writeTimestampFile(StringRef TimestampFile) { | |||
1384 | std::error_code EC; | |||
1385 | llvm::raw_fd_ostream Out(TimestampFile.str(), EC, llvm::sys::fs::F_None); | |||
1386 | } | |||
1387 | ||||
1388 | /// Prune the module cache of modules that haven't been accessed in | |||
1389 | /// a long time. | |||
1390 | static void pruneModuleCache(const HeaderSearchOptions &HSOpts) { | |||
1391 | struct stat StatBuf; | |||
1392 | llvm::SmallString<128> TimestampFile; | |||
1393 | TimestampFile = HSOpts.ModuleCachePath; | |||
1394 | assert(!TimestampFile.empty())(static_cast <bool> (!TimestampFile.empty()) ? void (0) : __assert_fail ("!TimestampFile.empty()", "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1394, __extension__ __PRETTY_FUNCTION__)); | |||
1395 | llvm::sys::path::append(TimestampFile, "modules.timestamp"); | |||
1396 | ||||
1397 | // Try to stat() the timestamp file. | |||
1398 | if (::stat(TimestampFile.c_str(), &StatBuf)) { | |||
1399 | // If the timestamp file wasn't there, create one now. | |||
1400 | if (errno(*__errno_location ()) == ENOENT2) { | |||
1401 | writeTimestampFile(TimestampFile); | |||
1402 | } | |||
1403 | return; | |||
1404 | } | |||
1405 | ||||
1406 | // Check whether the time stamp is older than our pruning interval. | |||
1407 | // If not, do nothing. | |||
1408 | time_t TimeStampModTime = StatBuf.st_mtimest_mtim.tv_sec; | |||
1409 | time_t CurrentTime = time(nullptr); | |||
1410 | if (CurrentTime - TimeStampModTime <= time_t(HSOpts.ModuleCachePruneInterval)) | |||
1411 | return; | |||
1412 | ||||
1413 | // Write a new timestamp file so that nobody else attempts to prune. | |||
1414 | // There is a benign race condition here, if two Clang instances happen to | |||
1415 | // notice at the same time that the timestamp is out-of-date. | |||
1416 | writeTimestampFile(TimestampFile); | |||
1417 | ||||
1418 | // Walk the entire module cache, looking for unused module files and module | |||
1419 | // indices. | |||
1420 | std::error_code EC; | |||
1421 | SmallString<128> ModuleCachePathNative; | |||
1422 | llvm::sys::path::native(HSOpts.ModuleCachePath, ModuleCachePathNative); | |||
1423 | for (llvm::sys::fs::directory_iterator Dir(ModuleCachePathNative, EC), DirEnd; | |||
1424 | Dir != DirEnd && !EC; Dir.increment(EC)) { | |||
1425 | // If we don't have a directory, there's nothing to look into. | |||
1426 | if (!llvm::sys::fs::is_directory(Dir->path())) | |||
1427 | continue; | |||
1428 | ||||
1429 | // Walk all of the files within this directory. | |||
1430 | for (llvm::sys::fs::directory_iterator File(Dir->path(), EC), FileEnd; | |||
1431 | File != FileEnd && !EC; File.increment(EC)) { | |||
1432 | // We only care about module and global module index files. | |||
1433 | StringRef Extension = llvm::sys::path::extension(File->path()); | |||
1434 | if (Extension != ".pcm" && Extension != ".timestamp" && | |||
1435 | llvm::sys::path::filename(File->path()) != "modules.idx") | |||
1436 | continue; | |||
1437 | ||||
1438 | // Look at this file. If we can't stat it, there's nothing interesting | |||
1439 | // there. | |||
1440 | if (::stat(File->path().c_str(), &StatBuf)) | |||
1441 | continue; | |||
1442 | ||||
1443 | // If the file has been used recently enough, leave it there. | |||
1444 | time_t FileAccessTime = StatBuf.st_atimest_atim.tv_sec; | |||
1445 | if (CurrentTime - FileAccessTime <= | |||
1446 | time_t(HSOpts.ModuleCachePruneAfter)) { | |||
1447 | continue; | |||
1448 | } | |||
1449 | ||||
1450 | // Remove the file. | |||
1451 | llvm::sys::fs::remove(File->path()); | |||
1452 | ||||
1453 | // Remove the timestamp file. | |||
1454 | std::string TimpestampFilename = File->path() + ".timestamp"; | |||
1455 | llvm::sys::fs::remove(TimpestampFilename); | |||
1456 | } | |||
1457 | ||||
1458 | // If we removed all of the files in the directory, remove the directory | |||
1459 | // itself. | |||
1460 | if (llvm::sys::fs::directory_iterator(Dir->path(), EC) == | |||
1461 | llvm::sys::fs::directory_iterator() && !EC) | |||
1462 | llvm::sys::fs::remove(Dir->path()); | |||
1463 | } | |||
1464 | } | |||
1465 | ||||
1466 | void CompilerInstance::createModuleManager() { | |||
1467 | if (!ModuleManager) { | |||
1468 | if (!hasASTContext()) | |||
1469 | createASTContext(); | |||
1470 | ||||
1471 | // If we're implicitly building modules but not currently recursively | |||
1472 | // building a module, check whether we need to prune the module cache. | |||
1473 | if (getSourceManager().getModuleBuildStack().empty() && | |||
1474 | !getPreprocessor().getHeaderSearchInfo().getModuleCachePath().empty() && | |||
1475 | getHeaderSearchOpts().ModuleCachePruneInterval > 0 && | |||
1476 | getHeaderSearchOpts().ModuleCachePruneAfter > 0) { | |||
1477 | pruneModuleCache(getHeaderSearchOpts()); | |||
1478 | } | |||
1479 | ||||
1480 | HeaderSearchOptions &HSOpts = getHeaderSearchOpts(); | |||
1481 | std::string Sysroot = HSOpts.Sysroot; | |||
1482 | const PreprocessorOptions &PPOpts = getPreprocessorOpts(); | |||
1483 | std::unique_ptr<llvm::Timer> ReadTimer; | |||
1484 | if (FrontendTimerGroup) | |||
1485 | ReadTimer = llvm::make_unique<llvm::Timer>("reading_modules", | |||
1486 | "Reading modules", | |||
1487 | *FrontendTimerGroup); | |||
1488 | ModuleManager = new ASTReader( | |||
1489 | getPreprocessor(), &getASTContext(), getPCHContainerReader(), | |||
1490 | getFrontendOpts().ModuleFileExtensions, | |||
1491 | Sysroot.empty() ? "" : Sysroot.c_str(), PPOpts.DisablePCHValidation, | |||
1492 | /*AllowASTWithCompilerErrors=*/false, | |||
1493 | /*AllowConfigurationMismatch=*/false, | |||
1494 | HSOpts.ModulesValidateSystemHeaders, | |||
1495 | getFrontendOpts().UseGlobalModuleIndex, | |||
1496 | std::move(ReadTimer)); | |||
1497 | if (hasASTConsumer()) { | |||
1498 | ModuleManager->setDeserializationListener( | |||
1499 | getASTConsumer().GetASTDeserializationListener()); | |||
1500 | getASTContext().setASTMutationListener( | |||
1501 | getASTConsumer().GetASTMutationListener()); | |||
1502 | } | |||
1503 | getASTContext().setExternalSource(ModuleManager); | |||
1504 | if (hasSema()) | |||
1505 | ModuleManager->InitializeSema(getSema()); | |||
1506 | if (hasASTConsumer()) | |||
1507 | ModuleManager->StartTranslationUnit(&getASTConsumer()); | |||
1508 | ||||
1509 | if (TheDependencyFileGenerator) | |||
1510 | TheDependencyFileGenerator->AttachToASTReader(*ModuleManager); | |||
1511 | for (auto &Listener : DependencyCollectors) | |||
1512 | Listener->attachToASTReader(*ModuleManager); | |||
1513 | } | |||
1514 | } | |||
1515 | ||||
1516 | bool CompilerInstance::loadModuleFile(StringRef FileName) { | |||
1517 | llvm::Timer Timer; | |||
1518 | if (FrontendTimerGroup) | |||
1519 | Timer.init("preloading." + FileName.str(), "Preloading " + FileName.str(), | |||
1520 | *FrontendTimerGroup); | |||
1521 | llvm::TimeRegion TimeLoading(FrontendTimerGroup ? &Timer : nullptr); | |||
1522 | ||||
1523 | // Helper to recursively read the module names for all modules we're adding. | |||
1524 | // We mark these as known and redirect any attempt to load that module to | |||
1525 | // the files we were handed. | |||
1526 | struct ReadModuleNames : ASTReaderListener { | |||
1527 | CompilerInstance &CI; | |||
1528 | llvm::SmallVector<IdentifierInfo*, 8> LoadedModules; | |||
1529 | ||||
1530 | ReadModuleNames(CompilerInstance &CI) : CI(CI) {} | |||
1531 | ||||
1532 | void ReadModuleName(StringRef ModuleName) override { | |||
1533 | LoadedModules.push_back( | |||
1534 | CI.getPreprocessor().getIdentifierInfo(ModuleName)); | |||
1535 | } | |||
1536 | ||||
1537 | void registerAll() { | |||
1538 | for (auto *II : LoadedModules) { | |||
1539 | CI.KnownModules[II] = CI.getPreprocessor() | |||
1540 | .getHeaderSearchInfo() | |||
1541 | .getModuleMap() | |||
1542 | .findModule(II->getName()); | |||
1543 | } | |||
1544 | LoadedModules.clear(); | |||
1545 | } | |||
1546 | ||||
1547 | void markAllUnavailable() { | |||
1548 | for (auto *II : LoadedModules) { | |||
1549 | if (Module *M = CI.getPreprocessor() | |||
1550 | .getHeaderSearchInfo() | |||
1551 | .getModuleMap() | |||
1552 | .findModule(II->getName())) { | |||
1553 | M->HasIncompatibleModuleFile = true; | |||
1554 | ||||
1555 | // Mark module as available if the only reason it was unavailable | |||
1556 | // was missing headers. | |||
1557 | SmallVector<Module *, 2> Stack; | |||
1558 | Stack.push_back(M); | |||
1559 | while (!Stack.empty()) { | |||
1560 | Module *Current = Stack.pop_back_val(); | |||
1561 | if (Current->IsMissingRequirement) continue; | |||
1562 | Current->IsAvailable = true; | |||
1563 | Stack.insert(Stack.end(), | |||
1564 | Current->submodule_begin(), Current->submodule_end()); | |||
1565 | } | |||
1566 | } | |||
1567 | } | |||
1568 | LoadedModules.clear(); | |||
1569 | } | |||
1570 | }; | |||
1571 | ||||
1572 | // If we don't already have an ASTReader, create one now. | |||
1573 | if (!ModuleManager) | |||
1574 | createModuleManager(); | |||
1575 | ||||
1576 | // If -Wmodule-file-config-mismatch is mapped as an error or worse, allow the | |||
1577 | // ASTReader to diagnose it, since it can produce better errors that we can. | |||
1578 | bool ConfigMismatchIsRecoverable = | |||
1579 | getDiagnostics().getDiagnosticLevel(diag::warn_module_config_mismatch, | |||
1580 | SourceLocation()) | |||
1581 | <= DiagnosticsEngine::Warning; | |||
1582 | ||||
1583 | auto Listener = llvm::make_unique<ReadModuleNames>(*this); | |||
1584 | auto &ListenerRef = *Listener; | |||
1585 | ASTReader::ListenerScope ReadModuleNamesListener(*ModuleManager, | |||
1586 | std::move(Listener)); | |||
1587 | ||||
1588 | // Try to load the module file. | |||
1589 | switch (ModuleManager->ReadAST( | |||
1590 | FileName, serialization::MK_ExplicitModule, SourceLocation(), | |||
1591 | ConfigMismatchIsRecoverable ? ASTReader::ARR_ConfigurationMismatch : 0)) { | |||
1592 | case ASTReader::Success: | |||
1593 | // We successfully loaded the module file; remember the set of provided | |||
1594 | // modules so that we don't try to load implicit modules for them. | |||
1595 | ListenerRef.registerAll(); | |||
1596 | return true; | |||
1597 | ||||
1598 | case ASTReader::ConfigurationMismatch: | |||
1599 | // Ignore unusable module files. | |||
1600 | getDiagnostics().Report(SourceLocation(), diag::warn_module_config_mismatch) | |||
1601 | << FileName; | |||
1602 | // All modules provided by any files we tried and failed to load are now | |||
1603 | // unavailable; includes of those modules should now be handled textually. | |||
1604 | ListenerRef.markAllUnavailable(); | |||
1605 | return true; | |||
1606 | ||||
1607 | default: | |||
1608 | return false; | |||
1609 | } | |||
1610 | } | |||
1611 | ||||
1612 | ModuleLoadResult | |||
1613 | CompilerInstance::loadModule(SourceLocation ImportLoc, | |||
1614 | ModuleIdPath Path, | |||
1615 | Module::NameVisibilityKind Visibility, | |||
1616 | bool IsInclusionDirective) { | |||
1617 | // Determine what file we're searching from. | |||
1618 | // FIXME: Should we be deciding whether this is a submodule (here and | |||
1619 | // below) based on -fmodules-ts or should we pass a flag and make the | |||
1620 | // caller decide? | |||
1621 | std::string ModuleName; | |||
1622 | if (getLangOpts().ModulesTS) { | |||
1623 | // FIXME: Same code as Sema::ActOnModuleDecl() so there is probably a | |||
1624 | // better place/way to do this. | |||
1625 | for (auto &Piece : Path) { | |||
1626 | if (!ModuleName.empty()) | |||
1627 | ModuleName += "."; | |||
1628 | ModuleName += Piece.first->getName(); | |||
1629 | } | |||
1630 | } | |||
1631 | else | |||
1632 | ModuleName = Path[0].first->getName(); | |||
1633 | ||||
1634 | SourceLocation ModuleNameLoc = Path[0].second; | |||
1635 | ||||
1636 | // If we've already handled this import, just return the cached result. | |||
1637 | // This one-element cache is important to eliminate redundant diagnostics | |||
1638 | // when both the preprocessor and parser see the same import declaration. | |||
1639 | if (ImportLoc.isValid() && LastModuleImportLoc == ImportLoc) { | |||
1640 | // Make the named module visible. | |||
1641 | if (LastModuleImportResult && ModuleName != getLangOpts().CurrentModule) | |||
1642 | ModuleManager->makeModuleVisible(LastModuleImportResult, Visibility, | |||
1643 | ImportLoc); | |||
1644 | return LastModuleImportResult; | |||
1645 | } | |||
1646 | ||||
1647 | clang::Module *Module = nullptr; | |||
1648 | ||||
1649 | // If we don't already have information on this module, load the module now. | |||
1650 | llvm::DenseMap<const IdentifierInfo *, clang::Module *>::iterator Known | |||
1651 | = KnownModules.find(Path[0].first); | |||
1652 | if (Known != KnownModules.end()) { | |||
1653 | // Retrieve the cached top-level module. | |||
1654 | Module = Known->second; | |||
1655 | } else if (ModuleName == getLangOpts().CurrentModule) { | |||
1656 | // This is the module we're building. | |||
1657 | Module = PP->getHeaderSearchInfo().lookupModule( | |||
1658 | ModuleName, /*AllowSearch*/ true, | |||
1659 | /*AllowExtraModuleMapSearch*/ !IsInclusionDirective); | |||
1660 | /// FIXME: perhaps we should (a) look for a module using the module name | |||
1661 | // to file map (PrebuiltModuleFiles) and (b) diagnose if still not found? | |||
1662 | //if (Module == nullptr) { | |||
1663 | // getDiagnostics().Report(ModuleNameLoc, diag::err_module_not_found) | |||
1664 | // << ModuleName; | |||
1665 | // ModuleBuildFailed = true; | |||
1666 | // return ModuleLoadResult(); | |||
1667 | //} | |||
1668 | Known = KnownModules.insert(std::make_pair(Path[0].first, Module)).first; | |||
1669 | } else { | |||
1670 | // Search for a module with the given name. | |||
1671 | Module = PP->getHeaderSearchInfo().lookupModule(ModuleName, true, | |||
1672 | !IsInclusionDirective); | |||
1673 | HeaderSearchOptions &HSOpts = | |||
1674 | PP->getHeaderSearchInfo().getHeaderSearchOpts(); | |||
1675 | ||||
1676 | std::string ModuleFileName; | |||
1677 | enum ModuleSource { | |||
1678 | ModuleNotFound, ModuleCache, PrebuiltModulePath, ModuleBuildPragma | |||
1679 | } Source = ModuleNotFound; | |||
1680 | ||||
1681 | // Check to see if the module has been built as part of this compilation | |||
1682 | // via a module build pragma. | |||
1683 | auto BuiltModuleIt = BuiltModules.find(ModuleName); | |||
1684 | if (BuiltModuleIt != BuiltModules.end()) { | |||
1685 | ModuleFileName = BuiltModuleIt->second; | |||
1686 | Source = ModuleBuildPragma; | |||
1687 | } | |||
1688 | ||||
1689 | // Try to load the module from the prebuilt module path. | |||
1690 | if (Source == ModuleNotFound && (!HSOpts.PrebuiltModuleFiles.empty() || | |||
1691 | !HSOpts.PrebuiltModulePaths.empty())) { | |||
1692 | ModuleFileName = | |||
1693 | PP->getHeaderSearchInfo().getPrebuiltModuleFileName(ModuleName); | |||
1694 | if (!ModuleFileName.empty()) | |||
1695 | Source = PrebuiltModulePath; | |||
1696 | } | |||
1697 | ||||
1698 | // Try to load the module from the module cache. | |||
1699 | if (Source == ModuleNotFound && Module) { | |||
1700 | ModuleFileName = PP->getHeaderSearchInfo().getCachedModuleFileName(Module); | |||
1701 | Source = ModuleCache; | |||
1702 | } | |||
1703 | ||||
1704 | if (Source == ModuleNotFound) { | |||
1705 | // We can't find a module, error out here. | |||
1706 | getDiagnostics().Report(ModuleNameLoc, diag::err_module_not_found) | |||
1707 | << ModuleName << SourceRange(ImportLoc, ModuleNameLoc); | |||
1708 | ModuleBuildFailed = true; | |||
1709 | return ModuleLoadResult(); | |||
1710 | } | |||
1711 | ||||
1712 | if (ModuleFileName.empty()) { | |||
1713 | if (Module && Module->HasIncompatibleModuleFile) { | |||
1714 | // We tried and failed to load a module file for this module. Fall | |||
1715 | // back to textual inclusion for its headers. | |||
1716 | return ModuleLoadResult::ConfigMismatch; | |||
1717 | } | |||
1718 | ||||
1719 | getDiagnostics().Report(ModuleNameLoc, diag::err_module_build_disabled) | |||
1720 | << ModuleName; | |||
1721 | ModuleBuildFailed = true; | |||
1722 | return ModuleLoadResult(); | |||
1723 | } | |||
1724 | ||||
1725 | // If we don't already have an ASTReader, create one now. | |||
1726 | if (!ModuleManager) | |||
1727 | createModuleManager(); | |||
1728 | ||||
1729 | llvm::Timer Timer; | |||
1730 | if (FrontendTimerGroup) | |||
1731 | Timer.init("loading." + ModuleFileName, "Loading " + ModuleFileName, | |||
1732 | *FrontendTimerGroup); | |||
1733 | llvm::TimeRegion TimeLoading(FrontendTimerGroup ? &Timer : nullptr); | |||
1734 | ||||
1735 | // Try to load the module file. If we are not trying to load from the | |||
1736 | // module cache, we don't know how to rebuild modules. | |||
1737 | unsigned ARRFlags = Source == ModuleCache ? | |||
1738 | ASTReader::ARR_OutOfDate | ASTReader::ARR_Missing : | |||
1739 | ASTReader::ARR_ConfigurationMismatch; | |||
1740 | switch (ModuleManager->ReadAST(ModuleFileName, | |||
1741 | Source == PrebuiltModulePath | |||
1742 | ? serialization::MK_PrebuiltModule | |||
1743 | : Source == ModuleBuildPragma | |||
1744 | ? serialization::MK_ExplicitModule | |||
1745 | : serialization::MK_ImplicitModule, | |||
1746 | ImportLoc, ARRFlags)) { | |||
1747 | case ASTReader::Success: { | |||
1748 | if (Source != ModuleCache && !Module) { | |||
1749 | Module = PP->getHeaderSearchInfo().lookupModule(ModuleName, true, | |||
1750 | !IsInclusionDirective); | |||
1751 | if (!Module || !Module->getASTFile() || | |||
1752 | FileMgr->getFile(ModuleFileName) != Module->getASTFile()) { | |||
1753 | // Error out if Module does not refer to the file in the prebuilt | |||
1754 | // module path. | |||
1755 | getDiagnostics().Report(ModuleNameLoc, diag::err_module_prebuilt) | |||
1756 | << ModuleName; | |||
1757 | ModuleBuildFailed = true; | |||
1758 | KnownModules[Path[0].first] = nullptr; | |||
1759 | return ModuleLoadResult(); | |||
1760 | } | |||
1761 | } | |||
1762 | break; | |||
1763 | } | |||
1764 | ||||
1765 | case ASTReader::OutOfDate: | |||
1766 | case ASTReader::Missing: { | |||
1767 | if (Source != ModuleCache) { | |||
1768 | // We don't know the desired configuration for this module and don't | |||
1769 | // necessarily even have a module map. Since ReadAST already produces | |||
1770 | // diagnostics for these two cases, we simply error out here. | |||
1771 | ModuleBuildFailed = true; | |||
1772 | KnownModules[Path[0].first] = nullptr; | |||
1773 | return ModuleLoadResult(); | |||
1774 | } | |||
1775 | ||||
1776 | // The module file is missing or out-of-date. Build it. | |||
1777 | assert(Module && "missing module file")(static_cast <bool> (Module && "missing module file" ) ? void (0) : __assert_fail ("Module && \"missing module file\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1777, __extension__ __PRETTY_FUNCTION__)); | |||
1778 | // Check whether there is a cycle in the module graph. | |||
1779 | ModuleBuildStack ModPath = getSourceManager().getModuleBuildStack(); | |||
1780 | ModuleBuildStack::iterator Pos = ModPath.begin(), PosEnd = ModPath.end(); | |||
1781 | for (; Pos != PosEnd; ++Pos) { | |||
1782 | if (Pos->first == ModuleName) | |||
1783 | break; | |||
1784 | } | |||
1785 | ||||
1786 | if (Pos != PosEnd) { | |||
1787 | SmallString<256> CyclePath; | |||
1788 | for (; Pos != PosEnd; ++Pos) { | |||
1789 | CyclePath += Pos->first; | |||
1790 | CyclePath += " -> "; | |||
1791 | } | |||
1792 | CyclePath += ModuleName; | |||
1793 | ||||
1794 | getDiagnostics().Report(ModuleNameLoc, diag::err_module_cycle) | |||
1795 | << ModuleName << CyclePath; | |||
1796 | return ModuleLoadResult(); | |||
1797 | } | |||
1798 | ||||
1799 | // Check whether we have already attempted to build this module (but | |||
1800 | // failed). | |||
1801 | if (getPreprocessorOpts().FailedModules && | |||
1802 | getPreprocessorOpts().FailedModules->hasAlreadyFailed(ModuleName)) { | |||
1803 | getDiagnostics().Report(ModuleNameLoc, diag::err_module_not_built) | |||
1804 | << ModuleName | |||
1805 | << SourceRange(ImportLoc, ModuleNameLoc); | |||
1806 | ModuleBuildFailed = true; | |||
1807 | return ModuleLoadResult(); | |||
1808 | } | |||
1809 | ||||
1810 | // Try to compile and then load the module. | |||
1811 | if (!compileAndLoadModule(*this, ImportLoc, ModuleNameLoc, Module, | |||
1812 | ModuleFileName)) { | |||
1813 | assert(getDiagnostics().hasErrorOccurred() &&(static_cast <bool> (getDiagnostics().hasErrorOccurred( ) && "undiagnosed error in compileAndLoadModule") ? void (0) : __assert_fail ("getDiagnostics().hasErrorOccurred() && \"undiagnosed error in compileAndLoadModule\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1814, __extension__ __PRETTY_FUNCTION__)) | |||
1814 | "undiagnosed error in compileAndLoadModule")(static_cast <bool> (getDiagnostics().hasErrorOccurred( ) && "undiagnosed error in compileAndLoadModule") ? void (0) : __assert_fail ("getDiagnostics().hasErrorOccurred() && \"undiagnosed error in compileAndLoadModule\"" , "/build/llvm-toolchain-snapshot-7~svn338205/tools/clang/lib/Frontend/CompilerInstance.cpp" , 1814, __extension__ __PRETTY_FUNCTION__)); | |||
1815 | if (getPreprocessorOpts().FailedModules) | |||
1816 | getPreprocessorOpts().FailedModules->addFailed(ModuleName); | |||
1817 | KnownModules[Path[0].first] = nullptr; | |||
1818 | ModuleBuildFailed = true; | |||
1819 | return ModuleLoadResult(); | |||
1820 | } | |||
1821 | ||||
1822 | // Okay, we've rebuilt and now loaded the module. | |||
1823 | break; | |||
1824 | } | |||
1825 | ||||
1826 | case ASTReader::ConfigurationMismatch: | |||
1827 | if (Source == PrebuiltModulePath) | |||
1828 | // FIXME: We shouldn't be setting HadFatalFailure below if we only | |||
1829 | // produce a warning here! | |||
1830 | getDiagnostics().Report(SourceLocation(), | |||
1831 | diag::warn_module_config_mismatch) | |||
1832 | << ModuleFileName; | |||
1833 | // Fall through to error out. | |||
1834 | LLVM_FALLTHROUGH[[clang::fallthrough]]; | |||
1835 | case ASTReader::VersionMismatch: | |||
1836 | case ASTReader::HadErrors: | |||
1837 | ModuleLoader::HadFatalFailure = true; | |||
1838 | // FIXME: The ASTReader will already have complained, but can we shoehorn | |||
1839 | // that diagnostic information into a more useful form? | |||
1840 | KnownModules[Path[0].first] = nullptr; | |||
1841 | return ModuleLoadResult(); | |||
1842 | ||||
1843 | case ASTReader::Failure: | |||
1844 | ModuleLoader::HadFatalFailure = true; | |||
1845 | // Already complained, but note now that we failed. | |||
1846 | KnownModules[Path[0].first] = nullptr; | |||
1847 | ModuleBuildFailed = true; | |||
1848 | return ModuleLoadResult(); | |||
1849 | } | |||
1850 | ||||
1851 | // Cache the result of this top-level module lookup for later. | |||
1852 | Known = KnownModules.insert(std::make_pair(Path[0].first, Module)).first; | |||
1853 | } | |||
1854 | ||||
1855 | // If we never found the module, fail. | |||
1856 | if (!Module) | |||
1857 | return ModuleLoadResult(); | |||
1858 | ||||
1859 | // Verify that the rest of the module path actually corresponds to | |||
1860 | // a submodule. | |||
1861 | bool MapPrivateSubModToTopLevel = false; | |||
1862 | if (!getLangOpts().ModulesTS && Path.size() > 1) { | |||
1863 | for (unsigned I = 1, N = Path.size(); I != N; ++I) { | |||
1864 | StringRef Name = Path[I].first->getName(); | |||
1865 | clang::Module *Sub = Module->findSubmodule(Name); | |||
1866 | ||||
1867 | // If the user is requesting Foo.Private and it doesn't exist, try to | |||
1868 | // match Foo_Private and emit a warning asking for the user to write | |||
1869 | // @import Foo_Private instead. FIXME: remove this when existing clients | |||
1870 | // migrate off of Foo.Private syntax. | |||
1871 | if (!Sub && PP->getLangOpts().ImplicitModules && Name == "Private" && | |||
1872 | Module == Module->getTopLevelModule()) { | |||
1873 | SmallString<128> PrivateModule(Module->Name); | |||
1874 | PrivateModule.append("_Private"); | |||
1875 | ||||
1876 | SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> PrivPath; | |||
1877 | auto &II = PP->getIdentifierTable().get( | |||
1878 | PrivateModule, PP->getIdentifierInfo(Module->Name)->getTokenID()); | |||
1879 | PrivPath.push_back(std::make_pair(&II, Path[0].second)); | |||
1880 | ||||
1881 | if (PP->getHeaderSearchInfo().lookupModule(PrivateModule, true, | |||
1882 | !IsInclusionDirective)) | |||
1883 | Sub = | |||
1884 | loadModule(ImportLoc, PrivPath, Visibility, IsInclusionDirective); | |||
1885 | if (Sub) { | |||
1886 | MapPrivateSubModToTopLevel = true; | |||
1887 | if (!getDiagnostics().isIgnored( | |||
1888 | diag::warn_no_priv_submodule_use_toplevel, ImportLoc)) { | |||
1889 | getDiagnostics().Report(Path[I].second, | |||
1890 | diag::warn_no_priv_submodule_use_toplevel) | |||
1891 | << Path[I].first << Module->getFullModuleName() << PrivateModule | |||
1892 | << SourceRange(Path[0].second, Path[I].second) | |||
1893 | << FixItHint::CreateReplacement(SourceRange(Path[0].second), | |||
1894 | PrivateModule); | |||
1895 | getDiagnostics().Report(Sub->DefinitionLoc, | |||
1896 | diag::note_private_top_level_defined); | |||
1897 | } | |||
1898 | } | |||
1899 | } | |||
1900 | ||||
1901 | if (!Sub) { | |||
1902 | // Attempt to perform typo correction to find a module name that works. | |||
1903 | SmallVector<StringRef, 2> Best; | |||
1904 | unsigned BestEditDistance = (std::numeric_limits<unsigned>::max)(); | |||
1905 | ||||
1906 | for (clang::Module::submodule_iterator J = Module->submodule_begin(), | |||
1907 | JEnd = Module->submodule_end(); | |||
1908 | J != JEnd; ++J) { | |||
1909 | unsigned ED = Name.edit_distance((*J)->Name, | |||
1910 | /*AllowReplacements=*/true, | |||
1911 | BestEditDistance); | |||
1912 | if (ED <= BestEditDistance) { | |||
1913 | if (ED < BestEditDistance) { | |||
1914 | Best.clear(); | |||
1915 | BestEditDistance = ED; | |||
1916 | } | |||
1917 | ||||
1918 | Best.push_back((*J)->Name); | |||
1919 | } | |||
1920 | } | |||
1921 | ||||
1922 | // If there was a clear winner, user it. | |||
1923 | if (Best.size() == 1) { | |||
1924 | getDiagnostics().Report(Path[I].second, | |||
1925 | diag::err_no_submodule_suggest) | |||
1926 | << Path[I].first << Module->getFullModuleName() << Best[0] | |||
1927 | << SourceRange(Path[0].second, Path[I-1].second) | |||
1928 | << FixItHint::CreateReplacement(SourceRange(Path[I].second), | |||
1929 | Best[0]); | |||
1930 | ||||
1931 | Sub = Module->findSubmodule(Best[0]); | |||
1932 | } | |||
1933 | } | |||
1934 | ||||
1935 | if (!Sub) { | |||
1936 | // No submodule by this name. Complain, and don't look for further | |||
1937 | // submodules. | |||
1938 | getDiagnostics().Report(Path[I].second, diag::err_no_submodule) | |||
1939 | << Path[I].first << Module->getFullModuleName() | |||
1940 | << SourceRange(Path[0].second, Path[I-1].second); | |||
1941 | break; | |||
1942 | } | |||
1943 | ||||
1944 | Module = Sub; | |||
1945 | } | |||
1946 | } | |||
1947 | ||||
1948 | // Make the named module visible, if it's not already part of the module | |||
1949 | // we are parsing. | |||
1950 | if (ModuleName != getLangOpts().CurrentModule) { | |||
1951 | if (!Module->IsFromModuleFile && !MapPrivateSubModToTopLevel) { | |||
1952 | // We have an umbrella header or directory that doesn't actually include | |||
1953 | // all of the headers within the directory it covers. Complain about | |||
1954 | // this missing submodule and recover by forgetting that we ever saw | |||
1955 | // this submodule. | |||
1956 | // FIXME: Should we detect this at module load time? It seems fairly | |||
1957 | // expensive (and rare). | |||
1958 | getDiagnostics().Report(ImportLoc, diag::warn_missing_submodule) | |||
1959 | << Module->getFullModuleName() | |||
1960 | << SourceRange(Path.front().second, Path.back().second); | |||
1961 | ||||
1962 | return ModuleLoadResult::MissingExpected; | |||
1963 | } | |||
1964 | ||||
1965 | // Check whether this module is available. | |||
1966 | if (Preprocessor::checkModuleIsAvailable(getLangOpts(), getTarget(), | |||
1967 | getDiagnostics(), Module)) { | |||
1968 | getDiagnostics().Report(ImportLoc, diag::note_module_import_here) | |||
1969 | << SourceRange(Path.front().second, Path.back().second); | |||
1970 | LastModuleImportLoc = ImportLoc; | |||
1971 | LastModuleImportResult = ModuleLoadResult(); | |||
1972 | return ModuleLoadResult(); | |||
1973 | } | |||
1974 | ||||
1975 | ModuleManager->makeModuleVisible(Module, Visibility, ImportLoc); | |||
1976 | } | |||
1977 | ||||
1978 | // Check for any configuration macros that have changed. | |||
1979 | clang::Module *TopModule = Module->getTopLevelModule(); | |||
1980 | for (unsigned I = 0, N = TopModule->ConfigMacros.size(); I != N; ++I) { | |||
1981 | checkConfigMacro(getPreprocessor(), TopModule->ConfigMacros[I], | |||
1982 | Module, ImportLoc); | |||
1983 | } | |||
1984 | ||||
1985 | // Resolve any remaining module using export_as for this one. | |||
1986 | getPreprocessor() | |||
1987 | .getHeaderSearchInfo() | |||
1988 | .getModuleMap() | |||
1989 | .resolveLinkAsDependencies(TopModule); | |||
1990 | ||||
1991 | LastModuleImportLoc = ImportLoc; | |||
1992 | LastModuleImportResult = ModuleLoadResult(Module); | |||
1993 | return LastModuleImportResult; | |||
1994 | } | |||
1995 | ||||
1996 | void CompilerInstance::loadModuleFromSource(SourceLocation ImportLoc, | |||
1997 | StringRef ModuleName, | |||
1998 | StringRef Source) { | |||
1999 | // Avoid creating filenames with special characters. | |||
2000 | SmallString<128> CleanModuleName(ModuleName); | |||
2001 | for (auto &C : CleanModuleName) | |||
2002 | if (!isAlphanumeric(C)) | |||
2003 | C = '_'; | |||
2004 | ||||
2005 | // FIXME: Using a randomized filename here means that our intermediate .pcm | |||
2006 | // output is nondeterministic (as .pcm files refer to each other by name). | |||
2007 | // Can this affect the output in any way? | |||
2008 | SmallString<128> ModuleFileName; | |||
2009 | if (std::error_code EC = llvm::sys::fs::createTemporaryFile( | |||
2010 | CleanModuleName, "pcm", ModuleFileName)) { | |||
2011 | getDiagnostics().Report(ImportLoc, diag::err_fe_unable_to_open_output) | |||
2012 | << ModuleFileName << EC.message(); | |||
2013 | return; | |||
2014 | } | |||
2015 | std::string ModuleMapFileName = (CleanModuleName + ".map").str(); | |||
2016 | ||||
2017 | FrontendInputFile Input( | |||
2018 | ModuleMapFileName, | |||
2019 | InputKind(getLanguageFromOptions(*Invocation->getLangOpts()), | |||
2020 | InputKind::ModuleMap, /*Preprocessed*/true)); | |||
2021 | ||||
2022 | std::string NullTerminatedSource(Source.str()); | |||
2023 | ||||
2024 | auto PreBuildStep = [&](CompilerInstance &Other) { | |||
2025 | // Create a virtual file containing our desired source. | |||
2026 | // FIXME: We shouldn't need to do this. | |||
2027 | const FileEntry *ModuleMapFile = Other.getFileManager().getVirtualFile( | |||
2028 | ModuleMapFileName, NullTerminatedSource.size(), 0); | |||
2029 | Other.getSourceManager().overrideFileContents( | |||
2030 | ModuleMapFile, | |||
2031 | llvm::MemoryBuffer::getMemBuffer(NullTerminatedSource.c_str())); | |||
2032 | ||||
2033 | Other.BuiltModules = std::move(BuiltModules); | |||
2034 | Other.DeleteBuiltModules = false; | |||
2035 | }; | |||
2036 | ||||
2037 | auto PostBuildStep = [this](CompilerInstance &Other) { | |||
2038 | BuiltModules = std::move(Other.BuiltModules); | |||
2039 | }; | |||
2040 | ||||
2041 | // Build the module, inheriting any modules that we've built locally. | |||
2042 | if (compileModuleImpl(*this, ImportLoc, ModuleName, Input, StringRef(), | |||
2043 | ModuleFileName, PreBuildStep, PostBuildStep)) { | |||
2044 | BuiltModules[ModuleName] = ModuleFileName.str(); | |||
2045 | llvm::sys::RemoveFileOnSignal(ModuleFileName); | |||
2046 | } | |||
2047 | } | |||
2048 | ||||
2049 | void CompilerInstance::makeModuleVisible(Module *Mod, | |||
2050 | Module::NameVisibilityKind Visibility, | |||
2051 | SourceLocation ImportLoc) { | |||
2052 | if (!ModuleManager) | |||
2053 | createModuleManager(); | |||
2054 | if (!ModuleManager) | |||
2055 | return; | |||
2056 | ||||
2057 | ModuleManager->makeModuleVisible(Mod, Visibility, ImportLoc); | |||
2058 | } | |||
2059 | ||||
2060 | GlobalModuleIndex *CompilerInstance::loadGlobalModuleIndex( | |||
2061 | SourceLocation TriggerLoc) { | |||
2062 | if (getPreprocessor().getHeaderSearchInfo().getModuleCachePath().empty()) | |||
2063 | return nullptr; | |||
2064 | if (!ModuleManager) | |||
2065 | createModuleManager(); | |||
2066 | // Can't do anything if we don't have the module manager. | |||
2067 | if (!ModuleManager) | |||
2068 | return nullptr; | |||
2069 | // Get an existing global index. This loads it if not already | |||
2070 | // loaded. | |||
2071 | ModuleManager->loadGlobalIndex(); | |||
2072 | GlobalModuleIndex *GlobalIndex = ModuleManager->getGlobalIndex(); | |||
2073 | // If the global index doesn't exist, create it. | |||
2074 | if (!GlobalIndex && shouldBuildGlobalModuleIndex() && hasFileManager() && | |||
2075 | hasPreprocessor()) { | |||
2076 | llvm::sys::fs::create_directories( | |||
2077 | getPreprocessor().getHeaderSearchInfo().getModuleCachePath()); | |||
2078 | GlobalModuleIndex::writeIndex( | |||
2079 | getFileManager(), getPCHContainerReader(), | |||
2080 | getPreprocessor().getHeaderSearchInfo().getModuleCachePath()); | |||
2081 | ModuleManager->resetForReload(); | |||
2082 | ModuleManager->loadGlobalIndex(); | |||
2083 | GlobalIndex = ModuleManager->getGlobalIndex(); | |||
2084 | } | |||
2085 | // For finding modules needing to be imported for fixit messages, | |||
2086 | // we need to make the global index cover all modules, so we do that here. | |||
2087 | if (!HaveFullGlobalModuleIndex && GlobalIndex && !buildingModule()) { | |||
2088 | ModuleMap &MMap = getPreprocessor().getHeaderSearchInfo().getModuleMap(); | |||
2089 | bool RecreateIndex = false; | |||
2090 | for (ModuleMap::module_iterator I = MMap.module_begin(), | |||
2091 | E = MMap.module_end(); I != E; ++I) { | |||
2092 | Module *TheModule = I->second; | |||
2093 | const FileEntry *Entry = TheModule->getASTFile(); | |||
2094 | if (!Entry) { | |||
2095 | SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> Path; | |||
2096 | Path.push_back(std::make_pair( | |||
2097 | getPreprocessor().getIdentifierInfo(TheModule->Name), TriggerLoc)); | |||
2098 | std::reverse(Path.begin(), Path.end()); | |||
2099 | // Load a module as hidden. This also adds it to the global index. | |||
2100 | loadModule(TheModule->DefinitionLoc, Path, Module::Hidden, false); | |||
2101 | RecreateIndex = true; | |||
2102 | } | |||
2103 | } | |||
2104 | if (RecreateIndex) { | |||
2105 | GlobalModuleIndex::writeIndex( | |||
2106 | getFileManager(), getPCHContainerReader(), | |||
2107 | getPreprocessor().getHeaderSearchInfo().getModuleCachePath()); | |||
2108 | ModuleManager->resetForReload(); | |||
2109 | ModuleManager->loadGlobalIndex(); | |||
2110 | GlobalIndex = ModuleManager->getGlobalIndex(); | |||
2111 | } | |||
2112 | HaveFullGlobalModuleIndex = true; | |||
2113 | } | |||
2114 | return GlobalIndex; | |||
2115 | } | |||
2116 | ||||
2117 | // Check global module index for missing imports. | |||
2118 | bool | |||
2119 | CompilerInstance::lookupMissingImports(StringRef Name, | |||
2120 | SourceLocation TriggerLoc) { | |||
2121 | // Look for the symbol in non-imported modules, but only if an error | |||
2122 | // actually occurred. | |||
2123 | if (!buildingModule()) { | |||
2124 | // Load global module index, or retrieve a previously loaded one. | |||
2125 | GlobalModuleIndex *GlobalIndex = loadGlobalModuleIndex( | |||
2126 | TriggerLoc); | |||
2127 | ||||
2128 | // Only if we have a global index. | |||
2129 | if (GlobalIndex) { | |||
2130 | GlobalModuleIndex::HitSet FoundModules; | |||
2131 | ||||
2132 | // Find the modules that reference the identifier. | |||
2133 | // Note that this only finds top-level modules. | |||
2134 | // We'll let diagnoseTypo find the actual declaration module. | |||
2135 | if (GlobalIndex->lookupIdentifier(Name, FoundModules)) | |||
2136 | return true; | |||
2137 | } | |||
2138 | } | |||
2139 | ||||
2140 | return false; | |||
2141 | } | |||
2142 | void CompilerInstance::resetAndLeakSema() { BuryPointer(takeSema()); } | |||
2143 | ||||
2144 | void CompilerInstance::setExternalSemaSource( | |||
2145 | IntrusiveRefCntPtr<ExternalSemaSource> ESS) { | |||
2146 | ExternalSemaSrc = std::move(ESS); | |||
2147 | } |