"GCC emits an __objc_class_name_{classname} symbol for every class, and a corresponding reference to this symbol for every compilation unit that references the class.  This causes linker errors when you try linking a program which references some classes but doesn't define them.  The attached patch implements this support in clang, so you can compile a class with clang, reference it in a file compiled with GCC, and have it all work correctly."

Patch by David Chisnall!

llvm-svn: 73364

llvm-svn: 72827

compiled with -fobjc-sender-dependent-dispatch.  This is used in AOP, COP, implementing object 
planes, and a few other things.
Patch by David Chisnall.

llvm-svn: 72275

It currently requires a patches to GNU libobjc (and so is not enabled by default) which are currently 
being tested and reviewed by GNUstep before being pushed upstream.
This patch does not allow support for synthesized ivars, but does provide the infrastructure 
needed for supporting them.
Patch by David Chisnall

llvm-svn: 72175

This patch allows clang to generate code for declared properties on the GNU runtime.  As with @synchronized, this requires some extra functions that are included with other libraries (not with the GNU runtime itself) and so will cause linker errors when these are not present.
Patch by David Chisnall.

llvm-svn: 72079

This patch fixes two bugs in the GNU Objective-C runtime implementation.  One is a case in rethrowing exceptions where the C types don't match correctly (I already sent this patch to Daniel Dunbar, who found the bug, so it may have already been committed).  The other fixes the case properties so that the methods generated as property accessors are added to the class structure correctly.
Patch by David Chisnall.

llvm-svn: 71980

llvm-svn: 71451

llvm-svn: 71227

"This patch fixes message sends to super in categories for the GNU runtime.  This used to work, but I broke it when I modified the code to emit the same thing as GCC for message sends to super in classes."

Patch by David Chisnall!

llvm-svn: 71220

"This patch is a first pass at adding support for exceptions for the GNU runtime.  There are a few limitations at present:

- @synchronized() is not yet supported at all.  gcc currently emits calls to runtime library functions that don't exist for this directive.

- Only id @catch statements are currently working.  This is enough for NS_DURING and friends, but I need to spend more time reading the output from gcc -S to work out how it finds the class pointer to make arbitrary class type catch statements work.

- I've tested it with a few common cases[1] and the clang test suite (which doesn't test exceptions for the GNU runtime, but shows I haven't broken anything else), but there are probably a lot of cases I've missed."

Patch by David Chisnall!

llvm-svn: 71198

Patch by David Chisnall.

llvm-svn: 71023

"The attached diff fixes the //FIXME in message send to super.  This should now be faster, and works in the presence of class posing.  This is now the same approach as used in GCC (the earlier code was a quick hack to get something working)."

Patch by David Chisnall!

llvm-svn: 70877

The attached diff fixes the //FIXME in message send to super.  This
should now be faster, and works in the presence of class posing.  This
is now the same approach as used in GCC (the earlier code was a quick
hack to get something working).

llvm-svn: 70868

not the shadow structure.

llvm-svn: 70691

llvm-svn: 70683

llvm-svn: 70105

"This fixes message sends to super in a way that both works with real code and passes the test in the test suite.  It also fixes a crash when using recent versions of GNU libobjc and compiling modules that do not contain any constant strings but do contain a declaration of the constant string class and possible some other corner cases (thanks to Pete French for providing me with a test case for that one)."

Patch by David Chisnall!

llvm-svn: 70093

methods, class methods, and property implementations) and instead
place all of these entities into the DeclContext.

This eliminates more linear walks when looking for class or instance
methods and should make PCH (de-)serialization of ObjCDecls trivial
(and lazy).

llvm-svn: 69849

underlying llvm::StructType for an interface.

llvm-svn: 69796

llvm-svn: 69789

 - For now, this means we are always doing the address computations by
   hand instead of constructing a proper GEP. Right now, however, this
   is less important than having fewer entry points to dealing with
   Objective-C interface layout.

llvm-svn: 69787

llvm-svn: 69775

when we need them -- which is exactly what some code was already
doing!
 - No intended functionality change.

llvm-svn: 69648

llvm-svn: 69641

w.r.t. ASTContext::[gs]etFieldDecl, and the Field argument to
EmitObjCValueForIvar).

llvm-svn: 69639

llvm-svn: 69563

@class but no implementation.  This was broken in all 3 runtime
impls.

llvm-svn: 69512

llvm-svn: 69501

"This patch fixes message sends to super in class methods for the GNU runtime (currently an instance method lookup is being performed)."

Patch by David Chisnall!

llvm-svn: 69493

No functionality change (really).

llvm-svn: 68726

runtime on 64-bit architectures.
Patch by David Chisnall

llvm-svn: 68238

llvm-svn: 68174

Patch by David Chisnal.

llvm-svn: 68125

Changed GenerateConstantString() to take an ObjCStringLiteral (instead of a std::string). While this isn't strictly necessary, it seems cleaner and allows us to cache to "containsNonAscii" if necessary (to avoid checking in both Sema and CodeGen).

llvm-svn: 68114

Patch by David Chisnall.

llvm-svn: 68043

message to 'super' in a class method declared in
cateogy (darwin specific).

llvm-svn: 65709

in preparation for nonfragile ivar offset work.

llvm-svn: 64225

Patch by David Chisnall

llvm-svn: 63769

Patch by David Chisnall.

llvm-svn: 63666

llvm-svn: 63644