Add test cases for AArch64 NEON instruction set misc.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@194672 91177308-0d34-0410-b5e6-96231b3b80d8
Add test case for AArch64 NEON poly64 intrinsic.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@194674 91177308-0d34-0410-b5e6-96231b3b80d8