ObjectiveC 'objc_bridging'. Assorment of improvements 
per Doug/Jordan comments. // rdar://15454846.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@195066 91177308-0d34-0410-b5e6-96231b3b80d8
Clean up predefined macros for AArch64 to follow ACLE 2.0.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@195068 91177308-0d34-0410-b5e6-96231b3b80d8
Add predicate for AArch64 crypto instructions.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@195069 91177308-0d34-0410-b5e6-96231b3b80d8
ObjectiveC objc_bridge. Minor refactoring.
// rdar://15454846


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@195070 91177308-0d34-0410-b5e6-96231b3b80d8
Implement AArch64 SISD intrinsics for vget_high and vget_low.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@195073 91177308-0d34-0410-b5e6-96231b3b80d8