of RHSs to id type instead of void* if either has Objective-C object
type.
 - This ensures the result can still be used in normal places an
   object can be used, like a message send.

Add implicit conversions for ?: applied to qualified id types to
ensure that the RHSs are compatible. 
 - This prevents a codegen crash (creating invalid PHI nodes).
 - Again, this relates to the fact that qualified id types have no
   canonical types.
 - Note that the implicit type casted to is incorrect, however this
   doesn't currently cause problems because of the flexibility of the
   id type.

Test cases for above.

llvm-svn: 55346

correctly.  Not a regression, but made more obvious by my recent fix 
which made function type compatibility checking a bit more strict.

llvm-svn: 55339

casting pointers to integers.

Eventually, we should check whether we can evaluate an expression 
using Expr::tryEvaluate, and this codepath should be tightened to only 
handle standard-compliant cases.

llvm-svn: 55331

Add CodeGenFunction::EmitUnsupportedLValue 
 - Gives error and returns undef value.

Swap some asserts() over to using EmitUnsupportedLValue
 - Rumor has it users (and even some developers) prefer carat
   diagnostics to backtraces.
 - Works better in Release-Asserts to boot.

llvm-svn: 55328

Added 'getExtent()' to StoreManager.
Implemented 'getExtent()' for BasicStoreManager.

llvm-svn: 55321

llvm-svn: 55316

llvm-svn: 55312

EmitScalarConversion().
 - Important for allowing Obj-C void * to id<X> casts and so on.
 - Not sure about this fix however, perhaps Type should understand
   that id is effectively a pointer type.

llvm-svn: 55311

 - Sema gives a perfectively nice error message on invalid constraints.

llvm-svn: 55310

 - NeXT loads the super class at runtime; this required changing the
   runtime interface to pass more information down.

llvm-svn: 55307

llvm-svn: 55304

llvm-svn: 55303

 - This ensures that references to undefined classes cause link
   errors.
 - NOTE: This relies on platform specific asm directives currently,
   this should be factored out.

Also, don't emit a SYMBOLS metadata entry if there are no symbols.

llvm-svn: 55302

llvm-svn: 55299

llvm-svn: 55298

llvm-svn: 55297

llvm-svn: 55287

llvm-svn: 55286

llvm-svn: 55284

llvm-svn: 55283

llvm-svn: 55281

llvm-svn: 55274

llvm-svn: 55269

an APInt directly to an ostream now, so add some hacks.  It would
be better to switch all of the bugreport (and friends) stuff over
to raw_ostream.

llvm-svn: 55264

Make sure to create CXX record decls for the implicit Obj-C type declarations. This lets us compile Cocoa.h as Objective-C++

llvm-svn: 55261

llvm-svn: 55255

llvm-svn: 55253

llvm-svn: 55250

llvm-svn: 55249

llvm-svn: 55245

llvm-svn: 55244

 - Use CodeGenModule::GetAddrOfConstantCFString

Some tweaks of CodeGenModule::GetAddrOfConstantCFString

llvm-svn: 55243

llvm-svn: 55242

llvm-svn: 55241

Make sure there's no "dangling" backtrack position when Preprocessor is destroyed.

llvm-svn: 55236

llvm-svn: 55235

Implement Obj-C lvalue message sends (aggregate returns).

Update several places to emit more precise ErrorUnsupported warnings
  for currently unimplemented Obj-C features (main missing chunks are
  property references, Obj-C exception handling, and the for ... in
  syntax).

llvm-svn: 55234

 - Simplify the sending code a bit.

llvm-svn: 55232

 - Used to autoselect runtime when neither -fnext-runtime nor
   -fgnu-runtime is specified.
 - Default impl is false, all darwin targets set it to true.

llvm-svn: 55231

llvm-svn: 55225