- Add MachineInstrBundle.h and MachineInstrBundle.cpp. This includes a function

to finalize MI bundles (i.e. add BUNDLE instruction and computing register def
  and use lists of the BUNDLE instruction) and a pass to unpack bundles.
- Teach more of MachineBasic and MachineInstr methods to be bundle aware.
- Switch Thumb2 IT block to MI bundles and delete the hazard recognizer hack to
  prevent IT blocks from being broken apart.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146542 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/InitializePasses.h

@@ -231,6 +231,7 @@ void initializeUnreachableMachineBlockElimPass(PassRegistry&);
 void initializeVerifierPass(PassRegistry&);
 void initializeVirtRegMapPass(PassRegistry&);
 void initializeInstSimplifierPass(PassRegistry&);
+void initializeUnpackMachineBundlesPass(PassRegistry&);
 
 }