[MC] AvailableFeatures needs to be a uint64_t to match FeatureBits in MCSubtargetInfo.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189815 91177308-0d34-0410-b5e6-96231b3b80d8
[SystemZ] Add support for TMHH, TMHL, TMLH and TMLL

For now this just handles simple comparisons of an ANDed value with zero.
The CC value provides enough information to do any comparison for a
2-bit mask, and some nonzero comparisons with more populated masks,
but that's all future work.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189819 91177308-0d34-0410-b5e6-96231b3b80d8