Remove the TargetMachine from DFAPacketizer since it was only
being used to grab subtarget specific things that we can grab
from the MachineFunction anyhow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219650 91177308-0d34-0410-b5e6-96231b3b80d8
Include map into the A15SDOptimizer rather than pick it up
transitively from the DFAPacketizer via TargetInstrInfo.h.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219652 91177308-0d34-0410-b5e6-96231b3b80d8
Don't include DFAPacketizer in TargetInstrInfo, there's no reason.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219653 91177308-0d34-0410-b5e6-96231b3b80d8