Add capability to have a MachineBasicBlock as an operand to a MachineInstr

Add a bunch of methods to MachineOperand is* to reduce usage of MO_foo


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5032 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/MachineInstrBuilder.h

@@ -81,6 +81,11 @@ struct MachineInstrBuilder {
     MI->addZeroExtImmOperand(Val);
     return *this;
   }
+
+  const MachineInstrBuilder &addMBB(MachineBasicBlock *MBB) const {
+    MI->addMachineBasicBlockOperand(MBB);
+    return *this;
+  }
 };
 
 /// BuildMI - Builder interface.  Specify how to create the initial instruction