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path: root/lib/Serialization/ASTWriter.cpp
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2012-01-01Introduce the core infrastructure needed to model redeclaration chainsDouglas Gregor
for Objective-C protocols, including: - Using the first declaration as the canonical declaration - Using the definition as the primary DeclContext - Making sure that all declarations have a pointer to the definition data, and that we know which declaration is the definition - Serialization support for redeclaration chains and for adding definitions to already-serialized declarations. However, note that we're not taking advantage of much of this code yet, because we're still re-using ObjCProtocolDecls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147410 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-31Implement support for module requirements, which indicate the languageDouglas Gregor
features needed for a particular module to be available. This allows mixed-language modules, where certain headers only work under some language variants (e.g., in C++, std.tuple might only be available in C++11 mode). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147387 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-27Eliminate ObjCClassDecl, which is redundant now that ObjCInterfaceDeclDouglas Gregor
covers both declarations (@class) and definitions (@interface) of an Objective-C class. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147299 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-22Serialize the AST reader's mapping from canonical declarations to theDouglas Gregor
set of (previously-canonical) declaration IDs to the module file, so that future AST reader instances that load the module know which declarations are merged. This is important in the fairly tricky case where a declaration of an entity, e.g., @class X; occurs before the import of a module that also declares that entity. We merge the declarations, and record the fact that the declaration of X loaded from the module was merged into the (now canonical) declaration of X that we parsed. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147181 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-20When we make a previously-deserialized module definition visible,Douglas Gregor
notify the AST deserialization listener so that the AST writer knows that it can write the macro definition. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146994 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-20Detect when mapping a #include/#import over to a submodule ends upDouglas Gregor
hitting a submodule that was never actually created, e.g., because that header wasn't parsed. In such cases, complain (because the module's umbrella headers don't cover everything) and fall back to including the header. Later, we'll add a warning at module-build time to catch all such cases. However, this fallback is important to eliminate assertions in the ASTWriter when this happens. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146933 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-19Eliminate the first->last redeclaration map from the AST fileDouglas Gregor
format. It's no longer being used, now that we have a new implementation of redeclaration chains. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146905 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-19Begin adding AVX2 intrinsics. Necessitated increasing the number of bits ↵Craig Topper
used to store builtinID when serializing identifier table. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146855 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-17Completely re-implement (de-)serialization of declarationDouglas Gregor
chains. The previous implementation relied heavily on the declaration chain being stored as a (circular) linked list on disk, as it is in memory. However, when deserializing from multiple modules, the different chains could get mixed up, leading to broken declaration chains. The new solution keeps track of the first and last declarations in the chain for each module file. When we load a declaration, we search all of the module files for redeclarations of that declaration, then splice together all of the lists into a coherent whole (along with any redeclarations that were actually parsed). As a drive-by fix, (de-)serialize the redeclaration chains of TypedefNameDecls, which had somehow gotten missed previously. Add a test of this serialization. This new scheme creates a redeclaration table that is fairly large in the PCH file (on the order of 400k for Cocoa.h's 12MB PCH file). The table is mmap'd in and searched via a binary search, but it's still quite large. A future tweak will eliminate entries for declarations that have no redeclarations anywhere, and should drastically reduce the size of this table. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146841 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-15Introduce the core infrastructure needed to model a completeDouglas Gregor
redeclaration chain for Objective-C classes, including: - Using the first declaration as the canonical declaration. - Using the definition as the primary DeclContext - Making sure that all declarations have a pointer to the definition data, and the definition knows that it is the definition. - Serialization support for when a definition gets added to a declaration that comes from an AST file. However, note that we're not taking advantage of much of this code yet, because we're still re-using ObjCInterfaceDecls. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146667 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12Tweak submodule ID handling in the AST writerDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146445 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-08Implement umbrella directories for modules, which are similar toDouglas Gregor
umbrella headers in the sense that all of the headers within that directory (and eventually its subdirectories) are considered to be part of the module with that umbrella directory. However, unlike umbrella headers, which are expected to include all of the headers within their subdirectories, Clang will automatically include all of the headers it finds in the named subdirectory. The intent here is to allow a module map to trivially turn a subdirectory into a module, where the module's structure can mimic the directory structure. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146165 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-08Within the module representation, generalize the notion of an umbrellaDouglas Gregor
header to also support umbrella directories. The umbrella directory for an umbrella header is the directory in which the umbrella header resides. No functionality change yet, but it's coming. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@146158 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-06Implement inferred submodules support, which (when requested)Douglas Gregor
implicitly generates submodules corresponding to the headers that fall within a module. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145887 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-05Parse inferred submodules in module maps, track their contents inDouglas Gregor
Module, and (de-)serialize this information. Semantics of inferred submodules to follow. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145864 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-05Implement support for wildcard exports in modules, allowing a moduleDouglas Gregor
to re-export anything that it imports. This opt-in feature makes a module behave more like a header, because it can be used to re-export the transitive closure of a (sub)module's dependencies. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145811 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-05Actually add a useful bit to the comment pre-FIXMEDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145809 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-05When writing a module file, keep track of the set of (sub)modules thatDouglas Gregor
it imports, establishing dependencies at the (sub)module granularity. This is not a user-visible change (yet). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145808 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-03Module files representing actual modules don't need to know the set of ↵Douglas Gregor
modules they import, since that information isn't actually used. Drop it from the AST file git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145738 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-03Implement support for precompiled headers, preambles, and serializedDouglas Gregor
"main" files that import modules. When loading any of these kinds of AST files, we make the modules that were imported visible into the translation unit that loaded the PCH file or preamble. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145737 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-02Implement (de-)serialization of the set of exported modules in aDouglas Gregor
module map. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145695 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-02Notify the AST writer (via ASTDeserializationListener) when aDouglas Gregor
(sub)module is read from an AST file. This makes sure that the AST writer knows how to map all modules to their global IDs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145685 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-02Implement name hiding for macro definitions within modules, such thatDouglas Gregor
only the macro definitions from visible (sub)modules will actually be visible. This provides the same behavior for macros that r145640 provided for declarations. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145683 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-01Implement name hiding for declarations deserialized from a non-visibleDouglas Gregor
module. When that module becomes visible, so do those declarations. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145640 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-01Infer the submodule ID for a given declaration based on the locationDouglas Gregor
of that declaration, and encode the submodule ID in each declaration stored in an AST file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145555 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-01Switch the ID numbers used for submodule IDs in the AST reader over toDouglas Gregor
a standard global/local scheme, so that submodule definitions will eventually be able to refer to submodules in other top-level modules. We'll need this functionality soonish. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145549 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-30Promote ModuleMap::Module to a namespace-scope class in the BasicDouglas Gregor
library, since modules cut across all of the libraries. Rename serialization::Module to serialization::ModuleFile to side-step the annoying naming conflict. Prune a bunch of ModuleMap.h includes that are no longer needed (most files only needed the Module type). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145538 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-30Implement (de-)serialization of the description of a module and itsDouglas Gregor
submodules. This information will eventually be used for name hiding when dealing with submodules. For now, we only use it to ensure that the module "key" returned when loading a module will always be a module (rather than occasionally being a FileEntry). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145497 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-30When writing a module file, pass the module through to the ASTDouglas Gregor
writer. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145479 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-16Implement (de-)serialization of the buffer contents for an overriddenDouglas Gregor
file in the source manager. This allows us to properly create and use modules described by module map files without umbrella headers (or with incompletely umbrella headers). More generally, we can actually build a PCH file that makes use of file -> buffer remappings, which could be useful in libclang in the future. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144830 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-15Add a -cc1-level option -fmodule-name=<name>, which will be used whenDouglas Gregor
building modules. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144680 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14[PCH] Do not crash if a class extension in a chained PCH ↵Argyrios Kyrtzidis
introduces/redeclares a property. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144520 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-14[PCH] In ASTWriter::WriteChainedObjCCategories use getDeclID since the declsArgyrios Kyrtzidis
should have been already emitted. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144519 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-13[PCH] When chaining a PCH and serializing HeaderSearch, make sure the ↵Argyrios Kyrtzidis
HeaderFileInfos from the primary PCH is deserialized, otherwise we lose info that headers were already #imported/#included. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144510 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-13Fix the signature of the getcontext builtin. Patch by Dimitry Andric.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144505 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-12Add a method in ASTMutationListener for the last use of Decl's ↵Argyrios Kyrtzidis
[is/set]ChangedSinceDeserialization and remove them. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144466 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-12[PCH] When completing an objc forward reference, do not serialize the chain ↵Argyrios Kyrtzidis
of its categories because it is going to be rewritten (and the chain will be serialized again), otherwise we may form a cycle in its categories list when deserializing. Also introduce ASTMutationListener::CompletedObjCForwardRef to notify that a forward reference was completed; using Decl's isChangedSinceDeserialization/setChangedSinceDeserialization is bug inducing and kinda gross, we should phase it out. Fixes infinite loop in rdar://10418538. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144465 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-01Rework the AST for the initializer of a delegating constructor, soDouglas Gregor
that it retains source location information for the type. Aside from general goodness (being able to walk the types described in that information), we now have a proper representation for dependent delegating constructors. Fixes PR10457 (for real). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143410 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-31[PCH] Now that we store the location of a decl outside its recordArgyrios Kyrtzidis
make sure that we keep track of locations of replaced decls as well. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143341 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-28[PCH] Sort the file decls by file offset not raw source location.Argyrios Kyrtzidis
Currently sorting by raw source location does work as intended but who knows what may change in the future.. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143256 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-28[PCH] In ASTWriter::associateDeclWithFile don't bother finding the file locArgyrios Kyrtzidis
if we are not interested in the decl. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143255 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-28[PCH] Keep track of file-level declarations that are contained by files.Argyrios Kyrtzidis
Introduce a FILE_SORTED_DECLS [de]serialization record that contains a file sorted array of file-level DeclIDs in a PCH/Module. The rationale is to allow "targeted" deserialization of decls inside a range of a source file. Cocoa PCH increased by 0.8% Difference of creation time for Cocoa PCH is below the noise level. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143238 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-27Make the loading of information attached to an IdentifierInfo from anDouglas Gregor
AST file more lazy, so that we don't eagerly load that information for all known identifiers each time a new AST file is loaded. The eager reloading made some sense in the context of precompiled headers, since very few identifiers were defined before PCH load time. With modules, however, a huge amount of code can get parsed before we see an @import, so laziness becomes important here. The approach taken to make this information lazy is fairly simple: when we load a new AST file, we mark all of the existing identifiers as being out-of-date. Whenever we want to access information that may come from an AST (e.g., whether the identifier has a macro definition, or what top-level declarations have that name), we check the out-of-date bit and, if it's set, ask the AST reader to update the IdentifierInfo from the AST files. The update is a merge, and we now take care to merge declarations before/after imports with declarations from multiple imports. The results of this optimization are fairly dramatic. On a small application that brings in 14 non-trivial modules, this takes modules from being > 3x slower than a "perfect" PCH file down to 30% slower for a full rebuild. A partial rebuild (where the PCH file or modules can be re-used) is down to 7% slower. Making the PCH file just a little imperfect (e.g., adding two smallish modules used by a bunch of .m files that aren't in the PCH file) tips the scales in favor of the modules approach, with 24% faster partial rebuilds. This is just a first step; the lazy scheme could possibly be improved by adding versioning, so we don't search into modules we already searched. Moreover, we'll need similar lazy schemes for all of the other lookup data structures, such as DeclContexts. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143100 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-17For modules, all macros that aren't include guards are implicitlyDouglas Gregor
public. Add a __private_macro__ directive to hide a macro, similar to the __module_private__ declaration specifier. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142188 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-07Rename TagDecl::isDefinition -> isCompleteDefinitionJohn McCall
for better self-documenting code, since the semantics are subtly different from getDefinition(). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141355 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-06Support for C1x _Atomic specifier (see testcase). This is primarily being ↵Eli Friedman
committed at the moment to help support C++0x <atomic>, but it should be a solid base for implementing the full specification of C1x _Atomic. Thanks to Jeffrey Yasskin for the thorough review! git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141330 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-29Basic/Diagnostic: Add a DiagSate::getOrAddMappingInfo method.Daniel Dunbar
- Also, spell const_iterator as const_iterator. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140765 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-29Basic/Diagnostics: Add a DiagnosticMappingInfo helper class, and switch toDaniel Dunbar
storing mappings with that instead of straying some magic constants about the source. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140760 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-25Rename Diagnostic to DiagnosticsEngine as per issue 5397David Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140478 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-23Switch assert(0/false) llvm_unreachable.David Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140367 91177308-0d34-0410-b5e6-96231b3b80d8
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