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2011-01-05Add Decl::isParameterPack(), which covers both function and templateDouglas Gregor
parameter packs, along with ParmVarDecl::isParameterPack(), which looks for function parameter packs. Use these routines to fix some obvious FIXMEs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122904 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-05Implement support for template template parameter packs, e.g.,Douglas Gregor
template<template<class> class ...Metafunctions> struct apply_to_each; git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122874 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-23Add an AST representation for non-type template parameterDouglas Gregor
packs, e.g., template<typename T, unsigned ...Dims> struct multi_array; along with semantic analysis support for finding unexpanded non-type template parameter packs in types, expressions, and so on. Template instantiation involving non-type template parameter packs probably doesn't work yet. That'll come soon. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122527 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-06Revert r120808, my previous implementation of caching for the linkageDouglas Gregor
and visibility of declarations, because it was extremely messy and it increased the size of NamedDecl. An improved implementation is forthcoming. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@121012 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-03Implement caching for the linkage and visibility calculations ofDouglas Gregor
declarations. The motivation for this patch is that linkage/visibility computations are linear in the number of redeclarations of an entity, and we've run into a case where a single translation unit has > 6500 redeclarations of the same (unused!) external variable. Since each redeclaration involves a linkage check, the resulting quadratic behavior makes Clang slow to a crawl. With this change, a simple test with 512 redeclarations of a variable syntax-checks ~20x faster than before. That said, I hate this change, and will probably end up reverting it in a few hours. Reasons to hate it: - It makes NamedDecl larger, since we don't have enough free bits in Decl to squeeze in the extra information about caching. - There are way too many places where we need to invalidate this cache, because the visibility of a declaration can change due to redeclarations (!). Despite self-hosting and passing the testsuite, I have no confidence that I've found all of places where this cache needs to be invalidated. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120808 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-02Eliminate two uses of NDEBUG in headers that cause different symbolsDouglas Gregor
to be available in debug vs. release builds. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@120629 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-21Major anonymous union/struct redesign.Francois Pichet
A new AST node is introduced: def IndirectField : DDecl<Value>; IndirectFields are injected into the anonymous's parent scope and chain back to the original field. Name lookup for anonymous entities now result in an IndirectFieldDecl instead of a FieldDecl. There is no functionality change, the code generated should be the same. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@119919 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-28Use the ASTMutationListener to track when a named decl gets added to a ↵Argyrios Kyrtzidis
DeclContext, meaning we need to rewrite its name lookup table in a chained PCH. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117536 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-26A couple of tweaks to the visibility rules: John McCall
- tags with C linkage should ignore visibility=hidden - functions and variables with explicit visibility attributes should ignore the linkage of their types Either of these should be sufficient to fix PR8457. Also, FileCheck-ize a test case. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117351 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-24Put the mechanism in place to track modifications in an AST entity that were ↵Argyrios Kyrtzidis
committed after its initial creation/deserialization and store the changes in a chained PCH. The idea is that the AST entities call methods on the ASTMutationListener to give notifications of changes; the PCHWriter implements the ASTMutationListener interface and stores the incremental changes of the updated entity. WIP git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@117235 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-14Allow deserialization of just the fields of a record, when we want to ↵Argyrios Kyrtzidis
iterate over them, instead of deserializing the complete declaration context of the record. Iterating over the fields of a record is very common (e.g to determine the layout), unfortunately we needlessly deserialize every declaration that the declaration context of the record contains; this can be bad for large C++ classes that contain a lot of methods. Fix this by allow deserialization of just the fields when we want to iterate over them. Progress for rdar://7260160. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116507 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-08Implement C++0x scoped enumerations, from Daniel Wallin! (and tweaked aDouglas Gregor
bit by me). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@116122 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-27Centralize the handling ofDouglas Gregor
CXXRecordDecl::DefinitionData::DeclaredCopyAssignment, for copy-assignment operators. Another step toward <rdar://problem/8459981>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114899 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-27Clean up the handling of the DeclaredDefaultConstructor andDouglas Gregor
DeclaredCopyConstructor bits in CXXRecordDecl's DefinitionData structure. Rather than having Sema call addedConstructor or set the bits directly at semi-random places, move all of the logic for managing these bits into CXXRecordDecl itself and tie the addedConstructor call into DeclContext::addDecl(). This makes it easier for AST-building clients to get the right bits set in DefinitionData, and is one small part of <rdar://problem/8459981>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@114889 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-08Decl::CheckAccessDeclContext() keeps asserting. Access is not set in some cases.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113419 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-08Re-enable CheckAccessDeclContext and make sure it doesn't trigger assertions.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113413 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Make inline namespace not be transparent after all. The concept simply ↵Sebastian Redl
doesn't fit. Instead, special-case the few places where transparent contexts have the desired behavior for inline namespaces. Fixes a redeclaration issue in inline namespaces. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112637 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Enable inline namespaces in the AST.Sebastian Redl
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112564 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Rename DeclContext::getLookupContext to getRedeclContext and change its ↵Sebastian Redl
semantics slightly. No functionality change in the absence of inline namespaces. Also, change a few places where inline namespaces actually make a difference to be prepared for them. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112563 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-31Decl::getEnclosingNamespaceContext has no reason to explicitly skip ↵Sebastian Redl
transparent contexts, and would be wrong to do so with inline namespaces. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@112562 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-20Fix an issue with writing to PCH another included PCH, introduced by the ↵Argyrios Kyrtzidis
"using an AST on-disk hash table for name lookup" commit. When including a PCH and later re-emitting to another PCH, the name lookup tables of DeclContexts may be incomplete, since we now lazily deserialize the visible decls of a particular name. Fix the issue by iterating over the un-deserialized visible decls and completing the lookup tables of DeclContexts before writing them out. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111698 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-20Use the AST on-disk hash table for name lookup inside a DeclContext.Argyrios Kyrtzidis
*Huge* improvement over the amount of deserializing that we do for C++ lookup. e.g, if he have the Carbon header precompiled and include it on a file containing this: int x; these are the before/after stats: BEFORE: *** AST File Statistics: 578 stat cache hits 4 stat cache misses 548/30654 source location entries read (1.787695%) 15907/16501 types read (96.400223%) 53525/59955 declarations read (89.275291%) 33993/43525 identifiers read (78.099945%) 41516/51891 statements read (80.006165%) 77/5317 macros read (1.448185%) 0/6335 lexical declcontexts read (0.000000%) 1/5424 visible declcontexts read (0.018437%) AFTER using the on-disk table: *** AST File Statistics: 578 stat cache hits 4 stat cache misses 548/30654 source location entries read (1.787695%) 10/16501 types read (0.060602%) 9/59955 declarations read (0.015011%) 161/43525 identifiers read (0.369902%) 20/51891 statements read (0.038542%) 6/5317 macros read (0.112846%) 0/6335 lexical declcontexts read (0.000000%) 2/5424 visible declcontexts read (0.036873%) There's only one issue affecting mostly the precompiled preambles which I will address soon. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111636 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-18Generate Attr subclasses with TableGen.Sean Hunt
Now all classes derived from Attr are generated from TableGen. Additionally, Attr* is no longer its own linked list; SmallVectors or Attr* are used. The accompanying LLVM commit contains the updates to TableGen necessary for this. Some other notes about newly-generated attribute classes: - The constructor arguments are a SourceLocation and a Context&, followed by the attributes arguments in the order that they were defined in Attr.td - Every argument in Attr.td has an appropriate accessor named getFoo, and there are sometimes a few extra ones (such as to get the length of a variadic argument). Additionally, specific_attr_iterator has been introduced, which will iterate over an AttrVec, but only over attributes of a certain type. It can be accessed through either Decl::specific_attr_begin/end or the global functions of the same name. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111455 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-30When we are deserializing the lexical decls of a DeclContext from PCH, ↵Argyrios Kyrtzidis
notify the PCHReader to hold off passing Decls to the consumer until the DeclContext is fully prepared. Before, due to recursive loading, we could be in a situation where we would try to deserialize the decls of a DeclContext which was already doing that, and bad things would happen. In the specific case I encountered, the lexical decls would form a cycle and we would enter infinite loop territory. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109857 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-27- Fix recording of offsets of types in dependent PCHs.Sebastian Redl
- Stop reading in (and thus deserializing) every declaration in the TU when creating a dependent PCH. - Switch the storage of a decl context's lexical declarations to a blob containing the IDs instead of a record. This is the only sane way of supporting update records later on. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109474 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-25Remove destructors from declaration nodesDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109380 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-25Remove the vast majority of the Destroy methods from the AST library,Douglas Gregor
since we aren't going to be calling them ever. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109377 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-13Instantiate attributes when first building an instantiatedFariborz Jahanian
VarDecl. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108218 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12Copy over attributes to instantiated variable.Fariborz Jahanian
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108195 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Remove Decl::getCompoundBody().Argyrios Kyrtzidis
This has 2 (slight) advantages: -Make explicit at getBody()'s callsite that we expect/handle only CompoundStmt and not CXXTryStmt. -Better tracking of Decl::getBody()'s callsites. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107771 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Simplify code. CompoundStmt's RBraceLoc can be found using its SourceRange too.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107770 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Introduce Decl::hasBody() and FunctionDecl::hasBody() and use them instead ↵Argyrios Kyrtzidis
of getBody() when we are just checking the existence of a body, to avoid de-serialization of the body from PCH. Makes de-serialization of the function body even more "lazier". git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107768 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-04When adding a visible decl, deserialize the visible decls and add it.Argyrios Kyrtzidis
Before this commit, visible decls added before deserialization were ignored. This was not an issue since name lookup (that usually comes before the addition) forces deserialization but it is an issue for lazily declared class implicit members. We can use a PCH'ed <string> now. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107596 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-03Lazily declare default constructors. We now delay the construction ofDouglas Gregor
declarations for implicit default constructors, copy constructors, copy assignment operators, and destructors. On a "simple" translation unit that includes a bunch of C++ standard library headers, we generate relatively few of these implicit declarations now: 4/159 implicit default constructors created 18/236 implicit copy constructors created 70/241 implicit copy assignment operators created 0/173 implicit destructors created And, on this translation unit, this optimization doesn't really provide any benefit. I'll do some more performance measurements soon, but this completes the implementation work for <rdar://problem/8151045>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107551 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-02Disable Decl::CheckAccessDeclContext() temporarily.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@107478 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-17Given Decl::isUsed() a flag indicating when to consider the "used"Douglas Gregor
attribute as part of the calculation. Sema::MarkDeclReferenced(), and a few other places, want only to consider the "used" bit to determine, e.g, whether to perform template instantiation. Fixes a linkage issue with Boost.Serialization. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@106252 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-11Fix PCH issue. Attributes of a declaration were truncated to just one when ↵Argyrios Kyrtzidis
the decl was read from a PCH file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105852 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-05Added AccessSpecDecl node.Abramo Bagnara
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105525 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-01Alter the ExternalASTSource interface to permit by-name lookups. PCH ↵John McCall
continues to bring in the entire lookup table at once. Also, give ExternalSemaSource's vtable a home. This is important because otherwise any reference to it will cause RTTI to be emitted, and since clang is compiled with -fno-rtti, that RTTI will contain unresolved references (to ExternalASTSource's RTTI). So this change makes it possible to subclass ExternalSemaSource from projects compiled with RTTI, as long as the subclass's home is compiled with -fno-rtti. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105268 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-30Convert DeclNodes to use TableGen.Sean Hunt
The macros required for DeclNodes use have changed to match the use of StmtNodes. The FooFirst enumerator constants have been named firstFoo to match usage elsewhere. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105165 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11Fixes for compilation with Microsoft Visual Studio 2010, from Steven Watanabe!Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103458 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23Recommit my change to how C++ does elaborated type lookups, now withJohn McCall
two bugfixes which fix selfhost and (hopefully) the nightly tests. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102198 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23Revert "C++ doesn't really use "namespaces" for different kinds of names the ↵Daniel Dunbar
same", which seems to break most C++ nightly test apps. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102174 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-23C++ doesn't really use "namespaces" for different kinds of names the sameJohn McCall
way that C does. Among other differences, elaborated type specifiers are defined to skip "non-types", which, as you might imagine, does not include typedefs. Rework our use of IDNS masks to capture the semantics of different kinds of declarations better, and remove most current lookup filters. Removing the last remaining filter is more complicated and will happen in a separate patch. Fixes PR 6885 as well some spectrum of unfiled bugs. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102164 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-22Make TemplateDecl and ObjCContainerDecl abstractDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102145 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-22Kill off IDNS_ObjCImplementation and IDNS_ObjCCategoryName; theyDouglas Gregor
aren't and never were used. There's a gap in the bit pattern for IDNS now, but I'm sure *someone* will fill it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102143 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-31Remove the AST statistics tracking I added yesterday; it didn't pan out.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@100027 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30Introduce new AST statistics that keep track of the number of isa (orDouglas Gregor
dyn_cast) invocations for C++ and Objective-C types, declarations, expressions, and statements. The statistics will be printed when -print-stats is provided to Clang -cc1, with results such as: 277073 clang - Number of checks for C++ declaration nodes 13311 clang - Number of checks for C++ expression nodes 18 clang - Number of checks for C++ statement nodes 174182 clang - Number of checks for C++ type nodes 92300 clang - Number of checks for Objective-C declaration nodes 9800 clang - Number of checks for Objective-C expression nodes 7 clang - Number of checks for Objective-C statement nodes 65733 clang - Number of checks for Objective-C type nodes The statistics are only gathered when NDEBUG is not defined, since they introduce potentially-expensive operations into very low-level routines (isa). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99912 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-29When copying a partial diagnostic into a DependentDiagnostic, allocateDouglas Gregor
storage for that partial diagnostic via the ASTContext's BumpPtrAllocator rather than using up slots in the ASTContext's cache. Now that we do this, we don't have to worry about destroying dependent diagnostics when destroying a DependentStoredDeclsMap. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99854 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-29Optimize PartialDiagnostic's memory-allocation behavior by placing aDouglas Gregor
cache of PartialDiagnostic::Storage objects into an allocator within the ASTContext. This eliminates a significant amount of malloc traffic, for a 10% performance improvement in -fsyntax-only wall-clock time with 403.gcc's combine.c. Also, eliminate the RequireNonAbstractType hack I put in earlier, which was but a symptom of this larger problem. Fixes <rdar://problem/7806091>. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99849 91177308-0d34-0410-b5e6-96231b3b80d8
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