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2013-03-19<rdar://problem/13363214> Eliminate race condition between module rebuild ↵Douglas Gregor
and the global module index. The global module index was querying the file manager for each of the module files it knows about at load time, to prune out any out-of-date information. The file manager would then cache the results of the stat() falls used to find that module file. Later, the same translation unit could end up trying to import one of the module files that had previously been ignored by the module cache, but after some other Clang instance rebuilt the module file to bring it up-to-date. The stale stat() results in the file manager would trigger a second rebuild of the already-up-to-date module, causing failures down the line. The global module index now lazily resolves its module file references to actual AST reader module files only after the module file has been loaded, eliminating the stat-caching race. Moreover, the AST reader can communicate to its caller that a module file is missing (rather than simply being out-of-date), allowing us to simplify the module-loading logic and allowing the compiler to recover if a dependent module file ends up getting deleted. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@177367 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-05[libclang] When logging a CXTranslationUnit that came from an AST file, ↵Argyrios Kyrtzidis
print out the filename. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@176511 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-24[preprocessor] Use MacroDirective in the preprocessor callbacks to make ↵Argyrios Kyrtzidis
available the full information about the macro (e.g if it was imported and where). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175978 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-22Comment parsing: add CommentOptions to allow specifying custom comment block ↵Dmitri Gribenko
commands Add an ability to specify custom documentation block comment commands via a new class CommentOptions. The intention is that this class will hold future customizations for comment parsing, including defining documentation comments with specific numbers of parameters, etc. CommentOptions instance is a member of LangOptions. CommentOptions is controlled by a new command-line parameter -fcomment-block-commands=Foo,Bar,Baz. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@175892 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-23Use 'const Decl *' throughout code completion in SemaDmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173277 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-21[ASTUnit] Unlike LoadFromCommandLine, LoadFromCompilerInvocation causes a ↵Argyrios Kyrtzidis
crash if Precompilepreamble is set to true because there is no FileManager at that point. Patch by Hurcan Solter! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@173071 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-20Nuke SetUpBuildDumpLog.Sean Silva
Also, it was the only reason that `argc` and `argv` were being passed into createDiagnostics, so remove those parameters and clean up callers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172945 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-12Remove useless 'llvm::' qualifier from names like StringRef and others that areDmitri Gribenko
brought into 'clang' namespace by clang/Basic/LLVM.h git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172323 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-11[libclang] In ASTUnit::getMainFileName() Invocation may be null because the ↵Argyrios Kyrtzidis
ASTUnit came from loading a PCH/module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172259 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-02s/CPlusPlus0x/CPlusPlus11/gRichard Smith
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171367 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-22[libclang] Don't try to translate diagnostics from the precompiled preamble ↵Argyrios Kyrtzidis
to the code-completion results, the SourceManager state may be slightly different when code-completing. And we don't even care for diagnostics when code-completing, anyway. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@170979 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-04Sort all of Clang's files under 'lib', and fix up the broken headersChandler Carruth
uncovered. This required manually correcting all of the incorrect main-module headers I could find, and running the new llvm/utils/sort_includes.py script over the files. I also manually added quite a few missing headers that were uncovered by shuffling the order or moving headers up to be main-module-headers. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169237 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-16Since CreateTargetInfo is taking ownership of the target options, passDouglas Gregor
it as a pointer. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168136 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-16[libclang] When caching code-completion results, pass the ↵Argyrios Kyrtzidis
CachedCompletionAllocator to the CodeCompletionTUInfo that is going to be used to get the results. Previously we would use ASTUnit's CodeCompletionTUInfo which has its own allocator that will go away when we reparse. That could result in a use-after-free bug when getting the parent context name from a CodeCompletionString. Addresses rdar://12568377. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168133 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-15[modules] Setup the import location of a module file and use itArgyrios Kyrtzidis
as the include location of the main file of an imported module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168061 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-15Use empty parens for empty function parameter list instead of '(void)'.Dmitri Gribenko
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168041 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-09Turn FrontendInputFile into an immutable class and have it also acceptArgyrios Kyrtzidis
a memory buffer instead of only a filename. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167627 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-02When code-completing don't disable the preprocessing record if modules are ↵Argyrios Kyrtzidis
enabled. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167325 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31[PCH] Remove the stat cache from the PCH file.Argyrios Kyrtzidis
The stat cache became essentially useless ever since we started validating all file entries in the PCH. But the motivating reason for removing it now is that it also affected correctness in this situation: -You have a header without include guards (using "#pragma once" or #import) -When creating the PCH: -The same header is referenced in an #include with different filename cases. -In the PCH, of course, we record only one file entry for the header file -But we cache in the PCH file the stat info for both filename cases -Then the source files are updated and the header file is updated in a way that its size and modification time are the same but its inode changes -When using the PCH: -We validate the headers, we check that header file and we create a file entry with its current inode -There's another #include with a filename with different case than the previously created file entry -In order to get its stat info we go through the cached stat info of the PCH and we receive the old inode -because of the different inodes, we think they are different files so we go ahead and include its contents. Removing the stat cache will potentially break clients that are attempting to use the stat cache as a way of avoiding having the actual input files available. If that use case is important, patches are welcome to bring it back in a way that will actually work correctly (i.e., emit a PCH that is self-contained, coping with literal strings, line/column computations, etc.). This fixes rdar://5502805 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167172 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31Decouple code-completion for the SkipFunctionBodies frontend option andArgyrios Kyrtzidis
add a test to make sure code-completion skips bodies. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@167141 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29Move getOriginalSourceFileName inline. Patch by Laszlo Nagy.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166981 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-25ASTUnit doesn't actually care about the predefines; don't record them.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166650 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-24Teach the preprocessor to hold onto the preprocessor options.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166599 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-24Move HeaderSearchOptions into the Lex library, make it intrusivelyDouglas Gregor
reference-counted, and hold a reference to it in HeaderSearch. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166583 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-23Make DiagnosticOptions intrusively reference-counted, and make sureDouglas Gregor
the various stakeholders bump up the reference count. In particular, the diagnostics engine now keeps the DiagnosticOptions object alive. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166508 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-23If the precompiled header named by "-include" is actually a directory,Douglas Gregor
check each of the files within that directory to determine if any of them is an AST file that matches the language and target options. If so, the first matching AST file is loaded. This fixes a longstanding discrepency with GCC's precompiled header implementation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166469 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-22Allow clients of the AST reader to specify what kinds of AST loadDouglas Gregor
failures they know how to tolerate, e.g., out-of-date input files or configuration/version mismatches. Suppress the corresponding diagnostics if the client can handle it. No clients actually use this functionality, yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166449 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-22Distinguish the various kinds of AST file loading failures:Douglas Gregor
file corruption, compiler version mismatch, target/language configuration mismatch, out-of-date AST file. No functionality change yet. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166446 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-16Serialize TargetOptions into an AST file, and make sure that we keepDouglas Gregor
target options around so they can be accessed at any point (rather than keeping them transient). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@166072 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-15Teach TargetInfo to hold on to the TargetOptions with which it wasDouglas Gregor
created. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165943 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11[libclang] Improve AST serialization done by ASTUnit::Save().Argyrios Kyrtzidis
The ASTUnit needs to initialize an ASTWriter at the beginning of parsing to fully handle serialization of a translation unit that imports modules. Do this by introducing an option to enable it, which corresponds to CXTranslationUnit_ForSerialization on the C API side. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165717 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-10When indexing a module file, for the ppIncludedFile callback giveArgyrios Kyrtzidis
an invalid location if the location points to the synthetic buffer for the module input. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165592 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-03[libclang] When indexing, invoke the importedASTFile for PCH files as well.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165161 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-03Some renames to use the 'visitor' nomenclature, no functionality change.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165083 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-02[libclang] When indexing an AST file, only deserialize the file levelArgyrios Kyrtzidis
declarations of the current primary module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165046 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-02[libclang] When indexing an AST file, only deserialize the preprocessing recordArgyrios Kyrtzidis
entities of the current primary module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@165023 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27[libclang] Always report a CXCursor_MacroDefinition for code-completionArgyrios Kyrtzidis
results for a macro name, not CXCursor_NotImplemented. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164740 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Have ASTUnit::Save() return a bool to indicate save error.Argyrios Kyrtzidis
Removes a dependency of ASTUnit to clang-c/Index.h. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@164704 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-15Allow disabling PCH validation when loading an AST file by checkingArgyrios Kyrtzidis
an environment variable for debugging purposes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163958 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-14[libclang] When loading an AST file, make sure to apply the language optionsArgyrios Kyrtzidis
to the target info. Related to rdar://12069503. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@163931 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-14Fix undefined behavior in code completion, caught byRichard Smith
-fcatch-undefined-behavior. Don't try to fit 34 different flags into 32 bits. Also, don't use 32-bit signed left shifts for this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161830 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-11Introduce a flag in SourceManager to treat non-system source filesArgyrios Kyrtzidis
as "volatile", meaning there's a high enough chance that they may change while we are trying to use them. This flag is only enabled by libclang. Currently "volatile" source files will be stat'ed immediately before opening them, because the file size stat info may not be accurate since when we got it (e.g. from the PCH). This avoids crashes when trying to reference mmap'ed memory from a file whose size is not what we expect. Note that there's still a window for a racing issue to occur but the window for it should be way smaller than before. We can consider later on to avoid mmap completely on such files. rdar://11612916 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@160074 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-03[libclang] Protect against a race condition where a threadArgyrios Kyrtzidis
may be destroying an ASTUnit while cleanupOnDiskMapAtExit is getting called. rdar://11781241 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159664 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-02Add a new libclang completion API to get brief documentation comment that isDmitri Gribenko
attached to a declaration in the completion string. Since extracting comments isn't free, a new code completion option is introduced. A new code completion option that enables including brief comments into CodeCompletionString should be a, err, code completion option. But because ASTUnit caches global declarations during parsing before even completion consumer is created, the option is duplicated as a translation unit option (in both libclang and ASTUnit, like the option to cache code completion results). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159539 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-08[libclang] Don't crash when saving a PCH from a prefix headerArgyrios Kyrtzidis
that does not exist. rdar://11607033 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158193 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-21[driver] When creating the compiler invocation out of command-lineArgyrios Kyrtzidis
arguments, force use of clang frontend for the driver. Fixes rdar://11356765. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@157205 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-14ASTUnit: Don't clone the new DiagnosticConsumer, causing it to get leaked.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154739 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-12Added a flag to the parser to skip method bodies.Erik Verbruggen
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154584 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-11[libclang] If displayDiagnostics is set (when calling clang_createIndex), ↵Argyrios Kyrtzidis
make sure to output the errors that occurred even if we did not get an AST (e.g. because the PCH failed to load). Also honor displayDiagnostics in clang_indexSourceFile(). rdar://11203489 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154472 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-10[code-complete] Introduce CodeCompletionTUInfo which will be used for cachingArgyrios Kyrtzidis
code-completion related strings specific to a translation unit (ASTContext and related data) CodeCompletionAllocator does such limited caching, by caching the name assigned to a DeclContext*, but that is not the appropriate place since that object has a lifetime that can extend beyond that of an ASTContext. Introduce CodeCompletionTUInfo which will be always tied to a translation unit to do this kind of caching and move the caching of CodeCompletionAllocator into this object, and propagate it to all the places where it will be needed. The plan is to extend the caching where appropriate, using CodeCompletionTUInfo, to avoid re-calculating code-completion strings. Part of rdar://10796159. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154408 91177308-0d34-0410-b5e6-96231b3b80d8
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