Fairly large "cleaup" related to changing ObjCCompatibleAliasDecl superclass (to inherit from NamedDecl, instead of ScopedDecl). 

- Added a DenseMap to associate an IdentifierInfo with the ObjCCompatibleAliasDecl.
- Renamed LookupScopedDecl->LookupDecl and changed it's return type to Decl. Also added lookup for ObjCCompatibleAliasDecl's.
- Removed Sema::LookupInterfaceDecl(). Converted clients to used LookupDecl().
- Some minor indentation changes.

Will deal with ObjCInterfaceDecl and getObjCInterfaceDecl() in a separate commit...

llvm-svn: 49058

llvm-svn: 48924

lib dir and move all the libraries into it.  This follows the main
llvm tree, and allows the libraries to be built in parallel.  The
top level now enforces that all the libs are built before Driver,
but we don't care what order the libs are built in.  This speeds
up parallel builds, particularly incremental ones.

llvm-svn: 48402

llvm-svn: 47560

Fix Sema::ActOnInstanceMessage to correctly do things in terms of canonical 
types, fixing bogus errors like:

NSDistantObject.m:10383:120: error: bad receiver type 'typeof((id<NSMutableCopying>)self)'
    id mess = ({ id __inv__ = ((void *)0); id __mb__ = _NSMessageBuilder((id <NSMutableCopying>)self, &__inv__); (void)[(__typeof__((id <NSMutableCopying>)self))__mb__ mutableCopyWithZone:((void *)0)]; if (!objc_collecting_enabled()) object_dispose(__mb__); __inv__; });

llvm-svn: 46633

here I fix just one.  The loop that rips through pointers should use
getAsPointerType() not static_cast<PointerType*> to get the pointee.  This
fixes a crash on a large testcase.

llvm-svn: 46632

llvm-svn: 46358

some naming inconsistencies in the names of classes pertaining to Objective-C
support in clang.

llvm-svn: 45715

llvm-svn: 45604

llvm-svn: 45597