For AArch64, add missing register cost calculation for big value types like v4i64 and v8i64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196456 91177308-0d34-0410-b5e6-96231b3b80d8
Move llvm/test/MC/ELF/thumb-st_other.s to test/MC/ARM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196457 91177308-0d34-0410-b5e6-96231b3b80d8