Access the subtarget off of the MachineFunction rather than
through the TargetMachine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219661 91177308-0d34-0410-b5e6-96231b3b80d8
Have MachineInstrBundle use the MachineFunction for subtarget
access rather than the TargetMachine.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219662 91177308-0d34-0410-b5e6-96231b3b80d8
Remove the use and member variable of the TargetMachine from
MachineLICM as we can get the same data off of the MachineFunction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219663 91177308-0d34-0410-b5e6-96231b3b80d8