ARM big endian function argument passing

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208316 91177308-0d34-0410-b5e6-96231b3b80d8
[ARM64] Check for proper immediate in shift/extend operands

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208317 91177308-0d34-0410-b5e6-96231b3b80d8
[ARM64] Ensure immediates in extend operands are in a valid range

Also emit a more useful diagnostic when they are not.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208318 91177308-0d34-0410-b5e6-96231b3b80d8