[X86] Add some fp to integer conversion intrinsics to Sema::CheckX86BuiltinRoundingOrSAE so their rounding controls will be checked.
[X86] Add some fp to integer conversion intrinsics to Sema::CheckX86BuiltinRoundingOrSAE so their rounding controls will be checked.

If we don't check this in the frontend we'll get an isel error in the backend later. This is far less friendly to users.

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@357924 91177308-0d34-0410-b5e6-96231b3b80d8

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