Fix mmintrin.h to use proper definition of functions taking no arguments.  - More important than it looks, this inhibits trivial inlining    otherwise.
Fix mmintrin.h to use proper definition of functions taking no
arguments.
 - More important than it looks, this inhibits trivial inlining
   otherwise.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@58360 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang