Ted Kremenek [Sat, 13 Dec 2008 21:49:13 +0000 (21:49 +0000)]
MemRegion:
- Overhauled the notion of "types" for TypedRegions. We now distinguish between the "lvalue" of a region (via getLValueRegion()) and the "rvalue" of a region (va getRValueRegion()). Since a region represents a chunk of memory it has both, but we were conflating these concepts in some cases, leading to some insidious bugs.
- Removed AnonPointeeType, partially because it is unused and because it doesn't have a clear notion of lvalue vs rvalue type. We can add it back once there is a need for it and we can resolve its role with these concepts.
StoreManager:
- Overhauled StoreManager::CastRegion. It expects an *lvalue* type for a region. This is actually what motivated the overhaul to the MemRegion type mechanism. It also no longer returns an SVal; we can just return a MemRegion*.
- BasicStoreManager::CastRegion now overlays an "AnonTypedRegion" for pointer-pointer casts. This matches with the MemRegion changes.
- Similar changes to RegionStore, except I've added a bunch of FIXMEs where it wasn't 100% clear where we should use TypedRegion::getRValueRegion() or TypedRegion::getLValueRegion().
AuditCFNumberCreate check:
- Now blasts through AnonTypedRegions that may layer the original memory region, thus checking if the actually memory block is of the appropriate type. This change was needed to work with the changes to StoreManager::CastRegion.
GRExprEngine::VisitCast:
- Conform to the new interface of StoreManager::CastRegion.
Tests:
- None of the analysis tests fail now for using the "basic store".
- Disabled the tests 'array-struct.c' and 'rdar-6442306-1.m' pending further testing and bug fixing.
Ted Kremenek [Sat, 13 Dec 2008 19:24:37 +0000 (19:24 +0000)]
A series of cleanups/fixes motivated by <rdar://problem/6442306>:
GRExprEngine (VisitCast):
- When using StoreManager::CastRegion, always use the state and value it returns to generate the next node. Failure to do so means that region values returned that don't require the state to be modified will get ignored.
MemRegion:
- Tighten the interface for ElementRegion. Now ElementRegion can only be created with a super region that is a 'TypedRegion' instead of any MemRegion. Code in BasicStoreManager/RegionStoreManager already assumed this, but it would result in a dynamic assertion check (and crash) rather than just having the compiler forbid the construction of such regions.
- Added ElementRegion::getArrayRegion() to return the 'typed version' of an ElementRegion's super region.
- Removed bogus assertion in ElementRegion::getType() that assumed that the super region was an AnonTypedRegion. All that matters is that it is a TypedRegion, which is now true all the time by design.
BasicStore:
- Modified getLValueElement() to check if the 'array' region is a TypedRegion before creating an ElementRegion. This conforms to the updated interface for ElementRegion.
RegionStore:
- In ArrayToPointer() gracefully handle things we don't reason about, and only create an ElementRegion if the array region is indeed a TypedRegion.
Ted Kremenek [Fri, 12 Dec 2008 22:05:38 +0000 (22:05 +0000)]
PTH: Added minor 'sibling jumping' optimization for iterating over the side table used for fast preprocessor block skipping. This has a minor performance improvement when preprocessing Cocoa.h, but can have some wins in pathologic cases.
Ted Kremenek [Fri, 12 Dec 2008 18:34:08 +0000 (18:34 +0000)]
Added PTH optimization to not process entire blocks of tokens that appear in skipped preprocessor blocks. This improves PTH speed by 6%. The code for this optimization itself is not very optimized, and will get cleaned up.
Chris Lattner [Fri, 12 Dec 2008 18:00:51 +0000 (18:00 +0000)]
Implement the final (hopefully) wrinkle to i-c-e + builtin_constant_p
processing: it allows arbitrary foldable constants as the operand of ?: when
builtin_constant_p is the condition.
Chris Lattner [Fri, 12 Dec 2008 06:19:11 +0000 (06:19 +0000)]
merge recovery-2.c into recovery-3.c.
Substantially improve error recovery after broken if conditions by
parsing the full if when we have a semantic error instead of using
parser recovery techniques to recover from a semantic error.
This fixes rdar://6094870 - spurious error after invalid 'if' condition
Douglas Gregor [Fri, 12 Dec 2008 02:00:36 +0000 (02:00 +0000)]
In C++, set the type of each of the enumerators in an enumeration to
the type of the enumeration once the enumeration has been defined.
Fix the overloading test-case to properly create enums that promote
the way we want them to.
Implement C++0x promotions from enumeration types to long
long/unsigned long long. We're using these promotions in Carbon.h
(since long long is a common extension).
Ted Kremenek [Thu, 11 Dec 2008 23:36:38 +0000 (23:36 +0000)]
PTH:
- Added a side-table per each token-cached file with the preprocessor conditional stack. This tracks what #if's are matched with what #endifs and where their respective tokens are in the PTH file. This will allow for quick skipping of excluded conditional branches in the Preprocessor.
- Performance testing shows the addition of this information (without actually utilizing it) leads to no performance regressions.
Steve Naroff [Thu, 11 Dec 2008 20:51:38 +0000 (20:51 +0000)]
Fixup generated code for imported block decl refs.
Found while investigating <rdar://problem/6435837> clang ObjC rewriter: use Block_release instead of Block_destroy.
Douglas Gregor [Thu, 11 Dec 2008 16:49:14 +0000 (16:49 +0000)]
Unifies the name-lookup mechanisms used in various parts of the AST
and separates lexical name lookup from qualified name lookup. In
particular:
* Make DeclContext the central data structure for storing and
looking up declarations within existing declarations, e.g., members
of structs/unions/classes, enumerators in C++0x enums, members of
C++ namespaces, and (later) members of Objective-C
interfaces/implementations. DeclContext uses a lazily-constructed
data structure optimized for fast lookup (array for small contexts,
hash table for larger contexts).
* Implement C++ qualified name lookup in terms of lookup into
DeclContext.
* Implement C++ unqualified name lookup in terms of
qualified+unqualified name lookup (since unqualified lookup is not
purely lexical in C++!)
* Limit the use of the chains of declarations stored in
IdentifierInfo to those names declared lexically.
* Eliminate CXXFieldDecl, collapsing its behavior into
FieldDecl. (FieldDecl is now a ScopedDecl).
* Make RecordDecl into a DeclContext and eliminates its
Members/NumMembers fields (since one can just iterate through the
DeclContext to get the fields).
Ted Kremenek [Wed, 10 Dec 2008 23:20:59 +0000 (23:20 +0000)]
PreprocessorLexer (and subclasses):
- Added virtual method 'getSourceLocation()' (no arguments) that gets the location of the next "observable" location (e.g., next character, next token).
PPLexerChange.cpp:
- Implemented FIXME by using PreprocessorLexer::getSourceLocation() to get the location in the file we are returning to after lexing a #included file. This appears to be slightly faster than having the branch (i.e., 'if(CurLexer)'). It's also not a really hot part of the Preprocessor.
Sebastian Redl [Wed, 10 Dec 2008 00:02:53 +0000 (00:02 +0000)]
Modify the move emulation according to the excellent design of Howard Hinnant. Makes for much nicer syntax when smart pointers are used consistently. Also, start converting internal argument passing of Parser to smart pointers.
Support for implementation of property in the case where
the synthesis is in an implementation of s subclass of
a super class where the property has been declared.
Steve Naroff [Tue, 9 Dec 2008 19:36:17 +0000 (19:36 +0000)]
Sema::ActOnMethodDeclaration(): Make sure we perform the default function/array conversion for parameter types.
This fixes <rdar://problem/6424064> checker on xcode: (possible bad AST) can the type of a method parameter really have "isFunctionType() == true"?
and http://llvm.org/bugs/show_bug.cgi?id=2997.
projects / clang / log