Teach Sema::CheckAssignmentConstraints() to allow assignments between id and block pointer types (^{}).

llvm-svn: 56793

llvm-svn: 56775

llvm-svn: 56770

don't need a BlockDeclRefExpr.

llvm-svn: 56766

llvm-svn: 56764

llvm-svn: 56761

This fixes <rdar://problem/6248392> clang: Error when using address of stack variable inside block.

llvm-svn: 56652

Downgrade incompatible block pointer error to a warning (to be consistent with incompatible pointer warnings in general).

llvm-svn: 56595

llvm-svn: 56438

Block literals are now represented by the concrete BlockExpr class.
This is cleanup (removes a FIXME).
No functionality change.

llvm-svn: 56288

 ^(expression) or ^(int arg1, float arg2)(expression)
...is no longer supported. 
All block literals now require a compound statement.

llvm-svn: 56257

Give string literals const element typesin C++, and cope with the deprecated C++ conversion from a string literal to a pointer-to-non-const-character

llvm-svn: 56137

 - Follow C99 behavior of using other operand type when one of
   operands is a null pointer constant.
 - Fix overenthusiastic devolving of any Objective-C types to id:
   o If either operand has an Objective-C object type then:
     - If both operands are interfaces and either operand can be
       assigned to the other, use that type as the composite type.
     - Otherwise, if either type is id, use id as the composite type.
     - Otherwise, warn about incompatible types and use id as the
       composite type.
 - Return handling of qualified idea to separate test following
   general pointer type checking.
   o Upgraded from old code to allow devolving to id (without warning,
     which matches GCC).
 - <rdar://problem/6212771>

Add test case for issues fixed above, XFAIL though because it exposed
a new issue in property handling.

llvm-svn: 56135

llvm-svn: 56094

llvm-svn: 56064

llvm-svn: 56063

llvm-svn: 55862

Added a couple FIXME's wrt PointLikeType. If the author reads this, it would be great to get some background on this class (thanks in advance).

llvm-svn: 55778

llvm-svn: 55767

Highlights...

- 4 new AST nodes, BlockExpr, BlockStmtExpr, BlockExprExpr, BlockDeclRefExpr.
- Sema::ActOnBlockStart(), ActOnBlockError(), ActOnBlockStmtExpr(), ActOnBlockExprExpr(), ActOnBlockReturnStmt().

Next steps...

- hack Sema::ActOnIdentifierExpr() to deal with block decl refs.
- add attribute handler for byref decls.
- add test cases.

llvm-svn: 55710

 - Allow any Objective-C object types to devolve to type id in a ?:
   expression. This matches gcc behavior more closely.

llvm-svn: 55705

 - Now also searches for correct setter method.
 - There are still some issues regarding validation of the setter
   method and access of read-only properties.

llvm-svn: 55686

type-checking pointer subtraction; if the canonical types aren't used,
the qualifiers won't always get stripped off correctly.

llvm-svn: 55620

 - Change Obj-C runtime message API, drop the ObjCMessageExpr arg in
   favor of just result type and selector. Necessary so it can be
   reused in situations where we don't want to cons up an
   ObjCMessageExpr.
 - Update aggregate binary assignment to know about special property
   ref lvalues.
 - Add CodeGenFunction::EmitCallArg overload which takes an already
   emitted rvalue.

Add CodeGenFunction::StoreComplexIntoAddr.

Disabled logic in Sema for parsing Objective-C dot-syntax that
accesses methods. This code does not search in the correct order and
the AST node has no way of properly representing its results.

Updated StmtDumper to print a bit more information about
ObjCPropertyRefExprs.

llvm-svn: 55561

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

testing compatibility.  This is necessary for some constructs, like merging
redeclarations.

Also, there are some ObjC changes to make sure that 
typesAreCompatible(a,b) == typesAreCompatible(b,a).  I don't have any 
ObjC code beyond the testsuite, so please tell me if there are any cases 
where this doesn't behave as expected.

llvm-svn: 55158

"+=".

llvm-svn: 55131

llvm-svn: 55083

 - UsualUnaryConversions takes an Expr *& and may modify its argument,
   this broke when it was refactored into Sema::CheckCastTypes. This
   meant that we were missing implicit casts in some places.
 - Seems pretty sad that this got through our tests.

llvm-svn: 55039

Add ExplicitCastExpr to replace the current CastExpr, and have ImplicitCastExpr and ExplicitCastExpr derive from a common base class (CastExpr):

Expr
  -> CastExpr
     -> ExplicitCastExpr
     -> ImplicitCastExpr 

llvm-svn: 54955

Move the type checking that Sema::ActOnCastExpr does into a new Sema::CheckCastTypes function so that it can be reused.

llvm-svn: 54852

 - Added as private members for each because it is not clear where to
   put the common definition. Perhaps the IdentifierInfos all of these
   "pseudo-keywords" should be collected into one place (this would
   KnownFunctionIDs and Objective-C property IDs, for example).

Remove Token::isNamedIdentifier.
 - There isn't a good reason to use strcmp when we have interned
   strings, and there isn't a good reason to encourage clients to do
   so.

llvm-svn: 54794

and put the caret on the ()'s.  e.g. produces:

t.c:13:9: error: called object is not a function or function pointer
  ((B)a)();
  ~~~~~~^

instead of:

t.c:13:3: error: called object is not a function or function pointer
  ((B)a)();
  ^~~~~~~~

llvm-svn: 54775

 - Kill unnecessary #includes in .cpp files. This is an automatic
   sweep so some things removed are actually used, but happen to be
   included by a previous header. I tried to get rid of the obvious
   examples and this was the easiest way to trim the #includes in one
   fell swoop.
 - We now return to regularly scheduled development.

llvm-svn: 54632

 - Drop {Decl.h,DeclObjC.h,IdentifierTable.h} from Expr.h
 - Moved Sema::getCurMethodDecl() out of line (dependent on
   ObjCMethodDecl via dyn_cast).

llvm-svn: 54629

 - Drop Diagnostic.h from DeclSpec.h, move utility Diag methods into
   implementation .cpp

llvm-svn: 54626

llvm-svn: 54617

llvm-svn: 54605

llvm-svn: 54600

No functionality change.

llvm-svn: 54588