Rename MemOperand to MachineMemOperand. This was suggested by
review feedback from Chris quite a while ago. No functionality
change.

llvm-svn: 49348
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index f307184..ddc8e1a 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -2500,8 +2500,8 @@
                                 Op.getOperand(0));
   
   // STD the extended value into the stack slot.
-  MemOperand MO(PseudoSourceValue::getFixedStack(),
-                MemOperand::MOStore, FrameIdx, 8, 8);
+  MachineMemOperand MO(PseudoSourceValue::getFixedStack(),
+                       MachineMemOperand::MOStore, FrameIdx, 8, 8);
   SDOperand Store = DAG.getNode(PPCISD::STD_32, MVT::Other,
                                 DAG.getEntryNode(), Ext64, FIdx,
                                 DAG.getMemOperand(MO));