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2010-08-13Implement caching of code-completion results for macro definitionsDouglas Gregor
when the CXTranslationUnit_CacheCompletionResults option is given to clang_parseTranslationUnit(). Essentially, we compute code-completion results for macro definitions after we have parsed the file, then store an ASTContext-agnostic version of those results (completion string, cursor kind, priority, and active contexts) in the ASTUnit. When performing code completion in that ASTUnit, we splice the macro definition results into the results provided by the actual code-completion (which has had macros turned off) before libclang gets those results. We use completion context information to only splice in those results that make sense for that context. With a completion involving all of the macros from Cocoa.h and a few other system libraries (totally ~8500 macro definitions) living in a precompiled header, we get about a 9% performance improvement from code completion, since we no longer have to deserialize all of the macro definitions from the precompiled header. Note that macro definitions are merely the canary; the cache is designed to also support other top-level declarations, which should be a bigger performance win. That optimization will be next. Note also that there is no mechanism for determining when to throw away the cache and recompute its contents. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111051 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-13Implement clang_saveTranslationUnit(), which saves a translation unitDouglas Gregor
into a PCH/AST file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111006 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-13Teach ASTUnit to hold on to the Sema object and ASTConsumer that areDouglas Gregor
used when parsing (or re-parsing) a file. Also, when loading a precompiled header into ASTUnit, create a Sema object that holds onto semantic-analysis information. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111003 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-11Reintroduce the ASTConsumer/ASTUnit fix from r110610, it has nothing to do ↵Sebastian Redl
with the breakage. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110840 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-11Fix a thinko in the creation of temporary files for the precompiled preambleDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110804 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-11Speculatively revert r110610 " Make ObjCInterfaceDecl redeclarable,Douglas Gregor
and create separate decl nodes for forward declarations and the definition," which appears to be causing significant Objective-C breakage. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110803 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-09- Make ObjCInterfaceDecl redeclarable, and create separate decl nodes for ↵Sebastian Redl
forward declarations and the definition. - Eagerly create ObjCInterfaceTypes for declarations. - The two above changes lead to a 0.5% increase in memory use and no speed regression when parsing Cocoa.h. On the other hand, now chained PCH works when there's a forward declaration in one PCH and the interface definition in another. - Add HandleInterestingDecl to ASTConsumer. PCHReader passes the "interesting" decls it finds to this function instead of HandleTopLevelDecl. The default implementation forwards to HandleTopLevelDecl, but ASTUnit's handler for example ignores them. This fixes a potential crash when lazy loading of PCH data would cause ASTUnit's "top level" declaration collection to change while being iterated. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110610 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-09Use precompiled preambles for in-process code completion.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110596 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-06Add an environment variable that makes libclang use chaining for PCH.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110414 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-05Give clang_codeCompleteAt() an "options" parameter, and add a newDouglas Gregor
flags enumeration + default-generating function that allows code-completion to be customized via the libclang API. Plus, turn on spell-checking when performing code completion. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110319 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04When performing in-process code completion, don't free the remappedDouglas Gregor
file buffers until the code completion results are destroyed; diagnostics may end up referring into the source. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110216 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04Add code-completion support directly to ASTUnit, which performs codeDouglas Gregor
completion within the translation unit using the same command-line arguments for parsing the translation unit. Eventually, we'll reuse the precompiled preamble to improve code-completion performance, and this also gives us a place to cache results. Expose this function via the new libclang function clang_codeCompleteAt(), which performs the code completion within a CXTranslationUnit. The completion occurs in-process (clang_codeCompletion() runs code completion out-of-process). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110210 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-04When we try (but fail) to build a precompiled preamble, wait for aDouglas Gregor
short "cooling off" period (defaulting to 5 reparses) before trying to build a precompiled preamble again. Previously, if we failed to build the precompiled preamble at any time, we just gave up the whole charade any never tried again. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110187 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03When using a precompiled preamble, keep track of the top-levelDouglas Gregor
declarations that we saw when creating the precompiled preamble, and provide those declarations in addition to the declarations parsed in the main source file when traversing top-level declarations. This makes the use of precompiled preambles a pure optimization, rather than changing the semantics of the parsed translation unit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110131 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-03Reshuffle the PCH generator action and consumer, so that we can re-useDouglas Gregor
it while generating precompiled preambles. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110108 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-02When using a precompiled preamble, save the diagnostics produced whenDouglas Gregor
creating the preamble and "replay" them when reusing the preamble. Also, fix a thinko in the copying of the preamble when building the precompiled preamble. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110061 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-31Implement dependency analysis for the precompiled preamble. If any ofDouglas Gregor
the files in the precompiled preamble have changed since it was build, force the preamble to be rebuilt. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109937 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-30Add some timers to ASTUnit that are only enabled when the LIBCLANG_TIMING ↵Douglas Gregor
environment variable is set. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109890 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-28Turn off precompiled preamble support for C++Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109680 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27Fix use-after-free with precompiled preamblesDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109505 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27Implement -fno-validate-pch at the -cc1 level, which suppresses mostDouglas Gregor
of the usual consistency checks used to determine when a precompiled header is incompatible with the translation unit it's being loaded into. Enable this option when loading a precompiled preamble, because the preamble loader will be performing all of this checking itself. Enable the preamble-based test now that it's working. This option is also useful for debugging Clang's PCH (<rdar://problem/7532213>). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109475 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-26Introduce basic support for loading a precompiled preamble whileDouglas Gregor
reparsing an ASTUnit. When saving a preamble, create a buffer larger than the actual file we're working with but fill everything from the end of the preamble to the end of the file with spaces (so the lexer will quickly skip them). When we load the file, create a buffer of the same size, filling it with the file and then spaces. Then, instruct the lexer to start lexing after the preamble, therefore continuing the parse from the spot where the preamble left off. It's now possible to perform a simple preamble build + parse (+ reparse) with ASTUnit. However, one has to disable a bunch of checking in the PCH reader to do so. That part isn't committed; it will likely be handled with some other kind of flag (e.g., -fno-validate-pch). As part of this, fix some issues with null termination of the memory buffers created for the preamble; we were trying to explicitly NULL-terminate them, even though they were also getting implicitly NULL terminated, leading to excess warnings about NULL characters in source files. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109445 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-25Make ASTContext always use the BumpPtrAllocator.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109375 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-24Put a newline at the end of the padded buffers used for theDouglas Gregor
precompiled preamble. This will suppress the -pedantic "no newline at end of file" warning. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109301 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-24Once we've built (or reused) a precompiled preamble, create theDouglas Gregor
appropriately-padded main file buffer (that has spaces in the extra "reserved" space) and thread that buffer through to the parsing function. This still does nothing. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109299 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-23Once we've built a precompiled preamble, keep track of the details ofDouglas Gregor
that preamble (the preamble text, preamble file, reserved main file size). Check these details when we try to rebuild the precompiled preamble, and when nothing has changed, re-use the precompiled preamble. This code is still very much a WIP, and can't even properly be tested because we have no way to use the precompiled preamble yet. "Trust me" git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109294 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-23Fix build on Ubuntu 10.04.Zhongxing Xu
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109208 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-23Basic plumbing for generating a precompiled preamble for anDouglas Gregor
ASTUnit/CXTranslationUnit. We can't actually use this preamble yet, however. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109202 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19Introduce a new libclang API, clang_reparseTranslationUnit(), whichDouglas Gregor
reparses an already-parsed translation unit. At the moment it's just a convenience function, but we hope to use it for performance optimizations. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108756 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19Driver: Change the driver to take the path to the main executable, instead ofDaniel Dunbar
taking it in pieces. - Fixes a problem where the Clang executable path was not initialized properly on Win32, because sys::Path::getBasename() doesn't do what I always think it does. Imagine that, a sys::Path interface that is confusing! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108667 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-14There is another implementation of PCHReaderListener around. Update it to ↵Sebastian Redl
the new interface. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108377 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-11Add an option to specify the target C++ ABI to the frontend. Use it toCharles Davis
select either the default Itanium ABI or the new, experimental Microsoft ABI. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105804 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-07Frontend: Add FrontendAction support for handling LLVM IR inputs.Daniel Dunbar
- These inputs follow an abbreviated execution path, but are still worth handling by FrontendAction so they reuse all the other clang -cc1 features. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105582 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-07Frontend: Move some initialization from CompilerInstance to FrontendAction, ↵Daniel Dunbar
to parallel what is done for AST inputs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105579 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-07Frontend: Change FrontendAction::BeginSourceFile to take the input kind ↵Daniel Dunbar
instead of an IsAST bool. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105578 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-07Frontend: Lift InputKind enumeration to top level.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105577 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03Workaround: Don't add ObjCMethodDecls to the vector of TopLevelDecls since ↵Ted Kremenek
they don't go in the DeclContext for the translation unit. This is to workaround a fundamental issue in how ObjC decls (within an @implementation) are parsed before the ObjCContainerDecl is available. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102944 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-19Fix -Wcast-qual warnings.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101786 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-05Make Diagnostic reference-counted, which is simpler than jugglingDouglas Gregor
maybe-ownership vs. ownership. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100498 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-05Clarify the ownership semantics of the Diagnostic object used byDouglas Gregor
ASTUnit. Previously, we would end up with use-after-free errors because the Diagnostic object would be creating in one place (say, CIndex) and its ownership would not be transferred into the ASTUnit. Fixes <rdar://problem/7818608>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100464 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-05Minor ASTUnit cleanups:Douglas Gregor
- Rename "Diagnostics" and related to "StoredDiagnostics", to better capture what we're actually storing. - Move SourceManager and FileManager to the heap. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100441 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-01Driver: Add support for a CLANGXX_IS_PRODUCTION build variable, which enableDaniel Dunbar
Clang++ support, even in "Production" mode (for testing purposes). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100119 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-19Optionally store a PreprocessingRecord in the preprocessor itself, andDouglas Gregor
tie its creation to a CC1 flag -detailed-preprocessing-record. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98963 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-18Introduce the notion of a "preprocessing record", which keeps track ofDouglas Gregor
the macro definitions and macro instantiations that are found during preprocessing. Preprocessing records are *not* generated by default; rather, we provide a PPCallbacks subclass that hooks into the existing callback mechanism to record this activity. The only client of preprocessing records is CIndex, which keeps track of macro definitions and instantations so that they can be exposed via cursors. At present, only token annotation uses these facilities, and only for macro instantiations; both will change in the near future. However, with this change, token annotation properly annotates macro instantiations that do not produce any tokens and instantiations of macros that are later undef'd, improving our consistency. Preprocessing directives that are not macro definitions are still handled by clang_annotateTokens() via re-lexing, so that we don't have to track every preprocessing directive in the preprocessing record. Performance impact of preprocessing records is still TBD, although it is limited to CIndex and therefore out of the path of the main compiler. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98836 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-17Don't "take" the file manager and source manager whenDouglas Gregor
ASTUnit::LoadFromCompilerInvocation() fails to create target information. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98697 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-16Make sure we actually override ReadHeaderFileInfo when we meant toDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98655 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-16Give SourceManager a Diagnostic object with which to report errors,Douglas Gregor
and start simplifying the interfaces in SourceManager that can fail. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98594 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05The Windows build is just too weird; there's no real cost to doing the ↵Douglas Gregor
concurrency checks for ASTUnit in all builds git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97840 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05Switch from NDEBUG to _DEBUG, since our Windows build is funnyDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97835 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05A little hack to identify unwanted concurrency in CIndexDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@97831 91177308-0d34-0410-b5e6-96231b3b80d8
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