The idea is to segregate Objective-C "object" pointers from general C pointers (utilizing the recently added ObjCObjectPointerType). The fun starts in Sema::GetTypeForDeclarator(), where "SomeInterface *" is now represented by a single AST node (rather than a PointerType whose Pointee is an ObjCInterfaceType). Since a significant amount of code assumed ObjC object pointers where based on C pointers/structs, this patch is very tedious. It should also explain why it is hard to accomplish this in smaller, self-contained patches.

This patch does most of the "heavy lifting" related to moving from PointerType->ObjCObjectPointerType. It doesn't include all potential "cleanups". The good news is additional cleanups can be done later (some are noted in the code). This patch is so large that I didn't want to include any changes that are purely aesthetic.

By making the ObjC types truly built-in, they are much easier to work with (and require fewer "hacks"). For example, there is no need for ASTContext::isObjCIdStructType() or ASTContext::isObjCClassStructType()! We believe this change (and the follow-up cleanups) will pay dividends over time. 

Given the amount of code change, I do expect some fallout from this change (though it does pass all of the clang tests). If you notice any problems, please let us know asap! Thanks.

llvm-svn: 75314

over the types of MemRegions. This allows the compiler to warn us which regions
are not handled, and also is a little faster.

llvm-svn: 75304

CodeTextRegions can only be casted to FunctionPointer or BlockPointerTypes. This
simply isn't true. We can handle bogus operations on CodeTextRegions (e.g, an
array access) elsewhere.

llvm-svn: 75285

void**, void***, etc.  Such casts should just pass the region through.

llvm-svn: 75281

Rename potentially ambiguous member template 'getRegion' to 'getSubRegion' to hopefully resolve template lookup ambiguities on some compilers.

llvm-svn: 75253

and replace the 'clang-cc' option '-analyzer-store=basic-new-cast' with
'-analyzer-store=basic-old-cast'. We'll keep the old CastRegion implementation
around for a little while for regression testing.

llvm-svn: 75209

llvm-svn: 75127

llvm-svn: 74890

llvm-svn: 74884

llvm-svn: 74877

region type. This better shows the logic of the method and allows the compiler
to check if we didn't handle a specific region kind.

llvm-svn: 74876

llvm-svn: 74875

llvm-svn: 74874

llvm-svn: 74872

- Refactor logic that creates ElementRegions into a help method 'MakeElementRegion'.
- Fix crash due to not handling StringRegions.  Casts of StringRegions now
  result in a new ElementRegion layered on the original StringRegion.

llvm-svn: 74867

Make 'BasicStoreManager' + 'NewCastRegion' testable from the command line using '-analyzer-store=basic-new-cast'.

llvm-svn: 74865

- Have test for 'CodeTextRegion' dominate other region tests.
- Use 'getAsRecordType' instead of isa<RecordType>

llvm-svn: 74853

llvm-svn: 74852

(its superclass). This will allow us to experiment with using the new CastRegion
with BasicStoreManager, and gradually phase out the old implementation.

llvm-svn: 74851

Fix <rdar://problem/7033733>.  The CF_RETURNS_RETAINED attribute should work if the return type on an Objective-C method is a CF type reference, not just an Objective-C object reference.

llvm-svn: 74841

llvm-svn: 74816

No functionality change. 

llvm-svn: 74812

llvm-svn: 74762

llvm-svn: 74751

BasicStoreManager: Use SymbolManager::canSymbolicate() to determine if a variable can be symbolicated.

llvm-svn: 74750

ValueManager::getRegionValueSymbolVal() with unguarded calls to
ValueManager::getRegionValueSymbolValOrUnknown(). This changes centralizes the
decision of what values to symbolicate in SymbolManager rather than having it
scatter in RegionStoreManager.

llvm-svn: 74730

structures passed-by-value as function arguments.

llvm-svn: 74729

directly consulting if a VarDecl is an implicit or actual parameter, a global,
etc.

llvm-svn: 74716

This will simplify the logic of StoreManagers that want to specially reason
about the values of parameters.

llvm-svn: 74715

llvm-svn: 74709

actual lifetime to their logical lifetime.

llvm-svn: 74665

pass misc-ps.m. Currently RegionStore/BasicStore don't do any special reasoning
about clang-style vectors, so we should return UnknownVal (in all cases) when
accessing their values via an array.

llvm-svn: 74660

llvm-svn: 74581

TypedRegion. While we plan on removing this code at some point, it serves as a
good reference implementation for use with BasicStore until we are sure the new
CastRegion logic (in RegionStore.cpp) is correct.

llvm-svn: 74559

llvm-svn: 74552

Mark the super region of the binding of block level expr in the Environment
as live.

llvm-svn: 74525

unknown for it.

Mark the super region of a live region as live, if the live region is pointed
to by a live pointer variable.

These fixes xfail_regionstore_wine_crash.c.

llvm-svn: 74524

DeclStmt would be dead before the DeclStmt.
For example:
int x = 0;
int y = x;
'x' would be dead before 'int y = x'.

llvm-svn: 74522

llvm-svn: 74521

llvm-svn: 74517