Eric Christopher 3c58743b2d Remove caching of the target machine and initialization of the
subtarget from ARMISelDAGtoDAG. The former is unnecessary and the
latter is initialized on each runOnMachineFunction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212297 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-03 22:24:49 +00:00
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