If all sources of a PHI node are defined by an implicit_def, just emit an implicit_def instead of a copy.

llvm-svn: 50927

 - Comment fixes.
 - Moar whitespace.
 - Made ivars "private" by default.
No functionality change.

llvm-svn: 50926

macros but doesn't expand #includes, remove comments, remove #defines
etc.

For example:

----
#include <stdio.h>

#define bbaa
#define funclike(x) x "a" x "b" x

bbaa  bbaa

#if 1 
funclike("gar")
foo /*blah*/  bar
bar
#endif

#if 0
funclike()
#endif
----


rewrites to:

----
#include <stdio.h>

#define bbaa
#define funclike(x) x "a" x "b" x 

/*bbaa  bbaa*/

#if 1
 "gar" "a" "gar" "b" "gar"/*funclike*//*("gar")*/
foo /*blah*/  bar
bar
#endif

#if 0
/*funclike()*/
#endif
----

llvm-svn: 50925

Rename IsPointerType to LVal::IsLValType, and update CFRefCount::EvalSummary to use IsLValType when conjuring symbols for return values (this fixes a bug with an assertion firing in the analyzer when two qualified objective-c types were compared).

llvm-svn: 50924

-identifierResolver exposes an iterator interface to get all decls through the scope chain.
-The semantic staff (checking IdentifierNamespace and Doug's checking for shadowed tags were moved out of IdentifierResolver and back into Sema. IdentifierResolver just gives an iterator for all reachable decls of an identifier.

llvm-svn: 50923

llvm-svn: 50922

no functional change.

llvm-svn: 50921

llvm-svn: 50920

llvm-svn: 50919

Note, some of the code will be moved into target independent part of DAG combiner in a subsequent patch.

llvm-svn: 50918

llvm-svn: 50917

case where there are multiple blocks with a large
number of common tail instructions more efficiently
(compile time optimization).

llvm-svn: 50916

Fix <rdar://problem/5924225> clang ObjC rewriter: objc_exception_throw declaration in preamble does not match objc/objc-exception.h.

llvm-svn: 50915

DO NOT pre-defined __OBJC2__. The __OBJC2__ macro should only be defined when targeting the new, Apple 2.0 *runtime ABI*. It is not intended to be used to #ifdef ObjC 2.0 langauge features. This is unfortunate (given it's name). In a perfect world, this defined would be named __OBJC2_RUNTIME_ABI__. Oh well.

llvm-svn: 50913

clashes on ::X

llvm-svn: 50912

llvm-svn: 50911

llvm-svn: 50910

llvm-svn: 50909

llvm-svn: 50908

llvm-svn: 50907

llvm-svn: 50906

llvm-svn: 50905

llvm-svn: 50904

llvm-svn: 50903

crash on kimwitu++.

llvm-svn: 50901

llvm-svn: 50900

llvm-svn: 50899

llvm-svn: 50898

llvm-svn: 50897

Fixed the build breakage, sorry for that.

llvm-svn: 50895

vector of the same element type and half the width, with the high, low, even,
and odd elements respectively.

Allow member references to member references, so that .hi.hi gives you the high
quarter of a vector.  This is fairly convenient syntax for some insert/extract
operations.

Remove some unnecessary methods/types in the ExtVectorElementExpr class.

llvm-svn: 50892

llvm-svn: 50891

llvm-svn: 50890

llvm-svn: 50888

llvm-svn: 50887

llvm-svn: 50886

llvm-svn: 50885

crashes because objc types aren't set up right.

llvm-svn: 50884

llvm-svn: 50883

   ~x < ~y --> y < x
   -x == -y --> x == y

llvm-svn: 50882