Define CallSDNode, an SDNode subclass for use with ISD::CALL.
Currently it just holds the calling convention and flags
for isVarArgs and isTailCall.

And it has several utility methods, which eliminate magic
5+2*i and similar index computations in several places.

CallSDNodes are not CSE'd. Teach UpdateNodeOperands to handle
nodes that are not CSE'd gracefully.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56183 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsISelLowering.h b/lib/Target/Mips/MipsISelLowering.h
index 9d8a756..fd595c9 100644
--- a/lib/Target/Mips/MipsISelLowering.h
+++ b/lib/Target/Mips/MipsISelLowering.h
@@ -86,7 +86,7 @@
     const MipsSubtarget *Subtarget;
 
     // Lower Operand helpers
-    SDNode *LowerCallResult(SDValue Chain, SDValue InFlag, SDNode*TheCall,
+    SDNode *LowerCallResult(SDValue Chain, SDValue InFlag, CallSDNode *TheCall,
                             unsigned CallingConv, SelectionDAG &DAG);
     bool IsGlobalInSmallSection(GlobalValue *GV); 
     bool IsInSmallSection(unsigned Size);