implement a trivial readme entry.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44380 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMISelLowering.h b/lib/Target/ARM/ARMISelLowering.h
index 93971c5..39e2383 100644
--- a/lib/Target/ARM/ARMISelLowering.h
+++ b/lib/Target/ARM/ARMISelLowering.h
@@ -78,6 +78,8 @@
     virtual SDOperand LowerOperation(SDOperand Op, SelectionDAG &DAG);
     virtual SDNode *ExpandOperationResult(SDNode *N, SelectionDAG &DAG);
         
+    SDOperand PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
+    
     virtual const char *getTargetNodeName(unsigned Opcode) const;
 
     virtual MachineBasicBlock *InsertAtEndOfBasicBlock(MachineInstr *MI,