Use two-arg addOperand(MF, MO) internally in MachineInstr when possible.

llvm-svn: 170796
diff --git a/llvm/lib/CodeGen/MachineFunction.cpp b/llvm/lib/CodeGen/MachineFunction.cpp
index b0ccdba..0bbacd0 100644
--- a/llvm/lib/CodeGen/MachineFunction.cpp
+++ b/llvm/lib/CodeGen/MachineFunction.cpp
@@ -158,7 +158,7 @@
 MachineFunction::CreateMachineInstr(const MCInstrDesc &MCID,
                                     DebugLoc DL, bool NoImp) {
   return new (InstructionRecycler.Allocate<MachineInstr>(Allocator))
-    MachineInstr(MCID, DL, NoImp);
+    MachineInstr(*this, MCID, DL, NoImp);
 }
 
 /// CloneMachineInstr - Create a new MachineInstr which is a copy of the